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/***
This file is part of systemd .
Copyright 2011 Lennart Poettering
systemd is free software ; you can redistribute it and / or modify it
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under the terms of the GNU Lesser General Public License as published by
the Free Software Foundation ; either version 2.1 of the License , or
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( at your option ) any later version .
systemd is distributed in the hope that it will be useful , but
WITHOUT ANY WARRANTY ; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE . See the GNU
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Lesser General Public License for more details .
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You should have received a copy of the GNU Lesser General Public License
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along with systemd ; If not , see < http : //www.gnu.org/licenses/>.
* * */
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# include <errno.h>
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# include <pwd.h>
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# include <string.h>
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# include <unistd.h>
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# include "sd-messages.h"
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# include "alloc-util.h"
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# include "audit-util.h"
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# include "bus-common-errors.h"
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# include "bus-error.h"
# include "bus-util.h"
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# include "dirent-util.h"
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# include "efivars.h"
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# include "escape.h"
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# include "fd-util.h"
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# include "fileio-label.h"
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# include "format-util.h"
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# include "fs-util.h"
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# include "logind.h"
# include "mkdir.h"
# include "path-util.h"
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# include "process-util.h"
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# include "selinux-util.h"
# include "sleep-config.h"
# include "special.h"
# include "strv.h"
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# include "terminal-util.h"
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# include "udev-util.h"
# include "unit-name.h"
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# include "user-util.h"
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# include "utmp-wtmp.h"
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int manager_get_session_from_creds ( Manager * m , sd_bus_message * message , const char * name , sd_bus_error * error , Session * * ret ) {
tree-wide: expose "p"-suffix unref calls in public APIs to make gcc cleanup easy
GLIB has recently started to officially support the gcc cleanup
attribute in its public API, hence let's do the same for our APIs.
With this patch we'll define an xyz_unrefp() call for each public
xyz_unref() call, to make it easy to use inside a
__attribute__((cleanup())) expression. Then, all code is ported over to
make use of this.
The new calls are also documented in the man pages, with examples how to
use them (well, I only added docs where the _unref() call itself already
had docs, and the examples, only cover sd_bus_unrefp() and
sd_event_unrefp()).
This also renames sd_lldp_free() to sd_lldp_unref(), since that's how we
tend to call our destructors these days.
Note that this defines no public macro that wraps gcc's attribute and
makes it easier to use. While I think it's our duty in the library to
make our stuff easy to use, I figure it's not our duty to make gcc's own
features easy to use on its own. Most likely, client code which wants to
make use of this should define its own:
#define _cleanup_(function) __attribute__((cleanup(function)))
Or similar, to make the gcc feature easier to use.
Making this logic public has the benefit that we can remove three header
files whose only purpose was to define these functions internally.
See #2008.
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_cleanup_ ( sd_bus_creds_unrefp ) sd_bus_creds * creds = NULL ;
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Session * session ;
int r ;
assert ( m ) ;
assert ( message ) ;
assert ( ret ) ;
if ( isempty ( name ) ) {
r = sd_bus_query_sender_creds ( message , SD_BUS_CREDS_SESSION | SD_BUS_CREDS_AUGMENT , & creds ) ;
if ( r < 0 )
return r ;
r = sd_bus_creds_get_session ( creds , & name ) ;
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if ( r = = - ENXIO )
return sd_bus_error_setf ( error , BUS_ERROR_NO_SESSION_FOR_PID ,
" Caller does not belong to any known session " ) ;
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if ( r < 0 )
return r ;
}
session = hashmap_get ( m - > sessions , name ) ;
if ( ! session )
return sd_bus_error_setf ( error , BUS_ERROR_NO_SUCH_SESSION , " No session '%s' known " , name ) ;
* ret = session ;
return 0 ;
}
int manager_get_user_from_creds ( Manager * m , sd_bus_message * message , uid_t uid , sd_bus_error * error , User * * ret ) {
User * user ;
int r ;
assert ( m ) ;
assert ( message ) ;
assert ( ret ) ;
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if ( ! uid_is_valid ( uid ) ) {
tree-wide: expose "p"-suffix unref calls in public APIs to make gcc cleanup easy
GLIB has recently started to officially support the gcc cleanup
attribute in its public API, hence let's do the same for our APIs.
With this patch we'll define an xyz_unrefp() call for each public
xyz_unref() call, to make it easy to use inside a
__attribute__((cleanup())) expression. Then, all code is ported over to
make use of this.
The new calls are also documented in the man pages, with examples how to
use them (well, I only added docs where the _unref() call itself already
had docs, and the examples, only cover sd_bus_unrefp() and
sd_event_unrefp()).
This also renames sd_lldp_free() to sd_lldp_unref(), since that's how we
tend to call our destructors these days.
Note that this defines no public macro that wraps gcc's attribute and
makes it easier to use. While I think it's our duty in the library to
make our stuff easy to use, I figure it's not our duty to make gcc's own
features easy to use on its own. Most likely, client code which wants to
make use of this should define its own:
#define _cleanup_(function) __attribute__((cleanup(function)))
Or similar, to make the gcc feature easier to use.
Making this logic public has the benefit that we can remove three header
files whose only purpose was to define these functions internally.
See #2008.
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_cleanup_ ( sd_bus_creds_unrefp ) sd_bus_creds * creds = NULL ;
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/* Note that we get the owner UID of the session, not the actual client UID here! */
r = sd_bus_query_sender_creds ( message , SD_BUS_CREDS_OWNER_UID | SD_BUS_CREDS_AUGMENT , & creds ) ;
if ( r < 0 )
return r ;
r = sd_bus_creds_get_owner_uid ( creds , & uid ) ;
if ( r < 0 )
return r ;
}
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user = hashmap_get ( m - > users , UID_TO_PTR ( uid ) ) ;
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if ( ! user )
return sd_bus_error_setf ( error , BUS_ERROR_NO_SUCH_USER , " No user " UID_FMT " known or logged in " , uid ) ;
* ret = user ;
return 0 ;
}
int manager_get_seat_from_creds ( Manager * m , sd_bus_message * message , const char * name , sd_bus_error * error , Seat * * ret ) {
Seat * seat ;
int r ;
assert ( m ) ;
assert ( message ) ;
assert ( ret ) ;
if ( isempty ( name ) ) {
Session * session ;
r = manager_get_session_from_creds ( m , message , NULL , error , & session ) ;
if ( r < 0 )
return r ;
seat = session - > seat ;
if ( ! seat )
return sd_bus_error_setf ( error , BUS_ERROR_NO_SUCH_SEAT , " Session has no seat. " ) ;
} else {
seat = hashmap_get ( m - > seats , name ) ;
if ( ! seat )
return sd_bus_error_setf ( error , BUS_ERROR_NO_SUCH_SEAT , " No seat '%s' known " , name ) ;
}
* ret = seat ;
return 0 ;
}
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static int property_get_idle_hint (
sd_bus * bus ,
const char * path ,
const char * interface ,
const char * property ,
sd_bus_message * reply ,
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void * userdata ,
sd_bus_error * error ) {
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Manager * m = userdata ;
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assert ( bus ) ;
assert ( reply ) ;
assert ( m ) ;
return sd_bus_message_append ( reply , " b " , manager_get_idle_hint ( m , NULL ) > 0 ) ;
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}
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static int property_get_idle_since_hint (
sd_bus * bus ,
const char * path ,
const char * interface ,
const char * property ,
sd_bus_message * reply ,
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void * userdata ,
sd_bus_error * error ) {
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Manager * m = userdata ;
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dual_timestamp t = DUAL_TIMESTAMP_NULL ;
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assert ( bus ) ;
assert ( reply ) ;
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assert ( m ) ;
manager_get_idle_hint ( m , & t ) ;
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return sd_bus_message_append ( reply , " t " , streq ( property , " IdleSinceHint " ) ? t . realtime : t . monotonic ) ;
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}
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static int property_get_inhibited (
sd_bus * bus ,
const char * path ,
const char * interface ,
const char * property ,
sd_bus_message * reply ,
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void * userdata ,
sd_bus_error * error ) {
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Manager * m = userdata ;
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InhibitWhat w ;
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assert ( bus ) ;
assert ( reply ) ;
assert ( m ) ;
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w = manager_inhibit_what ( m , streq ( property , " BlockInhibited " ) ? INHIBIT_BLOCK : INHIBIT_DELAY ) ;
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return sd_bus_message_append ( reply , " s " , inhibit_what_to_string ( w ) ) ;
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}
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static int property_get_preparing (
sd_bus * bus ,
const char * path ,
const char * interface ,
const char * property ,
sd_bus_message * reply ,
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void * userdata ,
sd_bus_error * error ) {
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Manager * m = userdata ;
bool b ;
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assert ( bus ) ;
assert ( reply ) ;
assert ( m ) ;
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if ( streq ( property , " PreparingForShutdown " ) )
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b = ! ! ( m - > action_what & INHIBIT_SHUTDOWN ) ;
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else
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b = ! ! ( m - > action_what & INHIBIT_SLEEP ) ;
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return sd_bus_message_append ( reply , " b " , b ) ;
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}
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static int property_get_scheduled_shutdown (
sd_bus * bus ,
const char * path ,
const char * interface ,
const char * property ,
sd_bus_message * reply ,
void * userdata ,
sd_bus_error * error ) {
Manager * m = userdata ;
int r ;
assert ( bus ) ;
assert ( reply ) ;
assert ( m ) ;
r = sd_bus_message_open_container ( reply , ' r ' , " st " ) ;
if ( r < 0 )
return r ;
r = sd_bus_message_append ( reply , " st " , m - > scheduled_shutdown_type , m - > scheduled_shutdown_timeout ) ;
if ( r < 0 )
return r ;
return sd_bus_message_close_container ( reply ) ;
}
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static BUS_DEFINE_PROPERTY_GET_ENUM ( property_get_handle_action , handle_action , HandleAction ) ;
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static int property_get_docked (
sd_bus * bus ,
const char * path ,
const char * interface ,
const char * property ,
sd_bus_message * reply ,
void * userdata ,
sd_bus_error * error ) {
Manager * m = userdata ;
assert ( bus ) ;
assert ( reply ) ;
assert ( m ) ;
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return sd_bus_message_append ( reply , " b " , manager_is_docked_or_external_displays ( m ) ) ;
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}
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static int property_get_current_sessions (
sd_bus * bus ,
const char * path ,
const char * interface ,
const char * property ,
sd_bus_message * reply ,
void * userdata ,
sd_bus_error * error ) {
Manager * m = userdata ;
assert ( bus ) ;
assert ( reply ) ;
assert ( m ) ;
return sd_bus_message_append ( reply , " t " , ( uint64_t ) hashmap_size ( m - > sessions ) ) ;
}
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static int property_get_current_inhibitors (
sd_bus * bus ,
const char * path ,
const char * interface ,
const char * property ,
sd_bus_message * reply ,
void * userdata ,
sd_bus_error * error ) {
Manager * m = userdata ;
assert ( bus ) ;
assert ( reply ) ;
assert ( m ) ;
return sd_bus_message_append ( reply , " t " , ( uint64_t ) hashmap_size ( m - > inhibitors ) ) ;
}
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static int method_get_session ( sd_bus_message * message , void * userdata , sd_bus_error * error ) {
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_cleanup_free_ char * p = NULL ;
Manager * m = userdata ;
const char * name ;
Session * session ;
int r ;
assert ( message ) ;
assert ( m ) ;
r = sd_bus_message_read ( message , " s " , & name ) ;
if ( r < 0 )
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return r ;
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r = manager_get_session_from_creds ( m , message , name , error , & session ) ;
if ( r < 0 )
return r ;
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p = session_bus_path ( session ) ;
if ( ! p )
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return - ENOMEM ;
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return sd_bus_reply_method_return ( message , " o " , p ) ;
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}
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static int method_get_session_by_pid ( sd_bus_message * message , void * userdata , sd_bus_error * error ) {
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_cleanup_free_ char * p = NULL ;
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Session * session = NULL ;
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Manager * m = userdata ;
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pid_t pid ;
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int r ;
assert ( message ) ;
assert ( m ) ;
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assert_cc ( sizeof ( pid_t ) = = sizeof ( uint32_t ) ) ;
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r = sd_bus_message_read ( message , " u " , & pid ) ;
if ( r < 0 )
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return r ;
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if ( pid < 0 )
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return - EINVAL ;
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if ( pid = = 0 ) {
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r = manager_get_session_from_creds ( m , message , NULL , error , & session ) ;
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if ( r < 0 )
return r ;
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} else {
r = manager_get_session_by_pid ( m , pid , & session ) ;
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if ( r < 0 )
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return r ;
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if ( ! session )
return sd_bus_error_setf ( error , BUS_ERROR_NO_SESSION_FOR_PID , " PID " PID_FMT " does not belong to any known session " , pid ) ;
}
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p = session_bus_path ( session ) ;
if ( ! p )
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return - ENOMEM ;
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return sd_bus_reply_method_return ( message , " o " , p ) ;
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}
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static int method_get_user ( sd_bus_message * message , void * userdata , sd_bus_error * error ) {
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_cleanup_free_ char * p = NULL ;
Manager * m = userdata ;
uint32_t uid ;
User * user ;
int r ;
assert ( message ) ;
assert ( m ) ;
r = sd_bus_message_read ( message , " u " , & uid ) ;
if ( r < 0 )
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return r ;
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r = manager_get_user_from_creds ( m , message , uid , error , & user ) ;
if ( r < 0 )
return r ;
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p = user_bus_path ( user ) ;
if ( ! p )
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return - ENOMEM ;
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return sd_bus_reply_method_return ( message , " o " , p ) ;
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}
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static int method_get_user_by_pid ( sd_bus_message * message , void * userdata , sd_bus_error * error ) {
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_cleanup_free_ char * p = NULL ;
Manager * m = userdata ;
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User * user = NULL ;
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pid_t pid ;
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int r ;
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assert ( message ) ;
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assert ( m ) ;
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assert_cc ( sizeof ( pid_t ) = = sizeof ( uint32_t ) ) ;
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r = sd_bus_message_read ( message , " u " , & pid ) ;
if ( r < 0 )
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return r ;
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if ( pid < 0 )
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return - EINVAL ;
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if ( pid = = 0 ) {
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r = manager_get_user_from_creds ( m , message , UID_INVALID , error , & user ) ;
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if ( r < 0 )
return r ;
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} else {
r = manager_get_user_by_pid ( m , pid , & user ) ;
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if ( r < 0 )
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return r ;
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if ( ! user )
return sd_bus_error_setf ( error , BUS_ERROR_NO_USER_FOR_PID , " PID " PID_FMT " does not belong to any known or logged in user " , pid ) ;
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}
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p = user_bus_path ( user ) ;
if ( ! p )
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return - ENOMEM ;
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return sd_bus_reply_method_return ( message , " o " , p ) ;
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}
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static int method_get_seat ( sd_bus_message * message , void * userdata , sd_bus_error * error ) {
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_cleanup_free_ char * p = NULL ;
Manager * m = userdata ;
const char * name ;
Seat * seat ;
int r ;
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assert ( message ) ;
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assert ( m ) ;
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r = sd_bus_message_read ( message , " s " , & name ) ;
if ( r < 0 )
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return r ;
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r = manager_get_seat_from_creds ( m , message , name , error , & seat ) ;
if ( r < 0 )
return r ;
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p = seat_bus_path ( seat ) ;
if ( ! p )
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return - ENOMEM ;
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return sd_bus_reply_method_return ( message , " o " , p ) ;
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}
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static int method_list_sessions ( sd_bus_message * message , void * userdata , sd_bus_error * error ) {
tree-wide: expose "p"-suffix unref calls in public APIs to make gcc cleanup easy
GLIB has recently started to officially support the gcc cleanup
attribute in its public API, hence let's do the same for our APIs.
With this patch we'll define an xyz_unrefp() call for each public
xyz_unref() call, to make it easy to use inside a
__attribute__((cleanup())) expression. Then, all code is ported over to
make use of this.
The new calls are also documented in the man pages, with examples how to
use them (well, I only added docs where the _unref() call itself already
had docs, and the examples, only cover sd_bus_unrefp() and
sd_event_unrefp()).
This also renames sd_lldp_free() to sd_lldp_unref(), since that's how we
tend to call our destructors these days.
Note that this defines no public macro that wraps gcc's attribute and
makes it easier to use. While I think it's our duty in the library to
make our stuff easy to use, I figure it's not our duty to make gcc's own
features easy to use on its own. Most likely, client code which wants to
make use of this should define its own:
#define _cleanup_(function) __attribute__((cleanup(function)))
Or similar, to make the gcc feature easier to use.
Making this logic public has the benefit that we can remove three header
files whose only purpose was to define these functions internally.
See #2008.
2015-11-27 19:13:45 +01:00
_cleanup_ ( sd_bus_message_unrefp ) sd_bus_message * reply = NULL ;
2013-11-05 01:10:21 +01:00
Manager * m = userdata ;
Session * session ;
Iterator i ;
int r ;
assert ( message ) ;
assert ( m ) ;
2011-06-24 18:50:50 +02:00
2013-11-21 01:51:16 +01:00
r = sd_bus_message_new_method_return ( message , & reply ) ;
2013-11-05 01:10:21 +01:00
if ( r < 0 )
2013-11-21 19:34:37 +01:00
return r ;
2011-06-24 18:50:50 +02:00
2013-11-05 01:10:21 +01:00
r = sd_bus_message_open_container ( reply , ' a ' , " (susso) " ) ;
if ( r < 0 )
2013-11-21 19:34:37 +01:00
return r ;
2013-11-05 01:10:21 +01:00
HASHMAP_FOREACH ( session , m - > sessions , i ) {
_cleanup_free_ char * p = NULL ;
p = session_bus_path ( session ) ;
if ( ! p )
2013-11-21 19:34:37 +01:00
return - ENOMEM ;
2013-11-05 01:10:21 +01:00
r = sd_bus_message_append ( reply , " (susso) " ,
session - > id ,
( uint32_t ) session - > user - > uid ,
session - > user - > name ,
session - > seat ? session - > seat - > id : " " ,
p ) ;
if ( r < 0 )
2013-11-21 19:34:37 +01:00
return r ;
2013-11-05 01:10:21 +01:00
}
r = sd_bus_message_close_container ( reply ) ;
if ( r < 0 )
2013-11-21 19:34:37 +01:00
return r ;
2013-11-05 01:10:21 +01:00
2015-04-29 18:58:30 +02:00
return sd_bus_send ( NULL , reply , NULL ) ;
2013-11-05 01:10:21 +01:00
}
2015-04-29 18:35:10 +02:00
static int method_list_users ( sd_bus_message * message , void * userdata , sd_bus_error * error ) {
tree-wide: expose "p"-suffix unref calls in public APIs to make gcc cleanup easy
GLIB has recently started to officially support the gcc cleanup
attribute in its public API, hence let's do the same for our APIs.
With this patch we'll define an xyz_unrefp() call for each public
xyz_unref() call, to make it easy to use inside a
__attribute__((cleanup())) expression. Then, all code is ported over to
make use of this.
The new calls are also documented in the man pages, with examples how to
use them (well, I only added docs where the _unref() call itself already
had docs, and the examples, only cover sd_bus_unrefp() and
sd_event_unrefp()).
This also renames sd_lldp_free() to sd_lldp_unref(), since that's how we
tend to call our destructors these days.
Note that this defines no public macro that wraps gcc's attribute and
makes it easier to use. While I think it's our duty in the library to
make our stuff easy to use, I figure it's not our duty to make gcc's own
features easy to use on its own. Most likely, client code which wants to
make use of this should define its own:
#define _cleanup_(function) __attribute__((cleanup(function)))
Or similar, to make the gcc feature easier to use.
Making this logic public has the benefit that we can remove three header
files whose only purpose was to define these functions internally.
See #2008.
2015-11-27 19:13:45 +01:00
_cleanup_ ( sd_bus_message_unrefp ) sd_bus_message * reply = NULL ;
2013-11-05 01:10:21 +01:00
Manager * m = userdata ;
User * user ;
Iterator i ;
int r ;
assert ( message ) ;
assert ( m ) ;
2013-11-21 01:51:16 +01:00
r = sd_bus_message_new_method_return ( message , & reply ) ;
2013-11-05 01:10:21 +01:00
if ( r < 0 )
2013-11-21 19:34:37 +01:00
return r ;
2013-11-05 01:10:21 +01:00
r = sd_bus_message_open_container ( reply , ' a ' , " (uso) " ) ;
if ( r < 0 )
2013-11-21 19:34:37 +01:00
return r ;
2013-11-05 01:10:21 +01:00
HASHMAP_FOREACH ( user , m - > users , i ) {
_cleanup_free_ char * p = NULL ;
p = user_bus_path ( user ) ;
if ( ! p )
2013-11-21 19:34:37 +01:00
return - ENOMEM ;
2013-11-05 01:10:21 +01:00
r = sd_bus_message_append ( reply , " (uso) " ,
( uint32_t ) user - > uid ,
user - > name ,
p ) ;
if ( r < 0 )
2013-11-21 19:34:37 +01:00
return r ;
2013-11-05 01:10:21 +01:00
}
r = sd_bus_message_close_container ( reply ) ;
if ( r < 0 )
2013-11-21 19:34:37 +01:00
return r ;
2013-11-05 01:10:21 +01:00
2015-04-29 18:58:30 +02:00
return sd_bus_send ( NULL , reply , NULL ) ;
2013-11-05 01:10:21 +01:00
}
2015-04-29 18:35:10 +02:00
static int method_list_seats ( sd_bus_message * message , void * userdata , sd_bus_error * error ) {
tree-wide: expose "p"-suffix unref calls in public APIs to make gcc cleanup easy
GLIB has recently started to officially support the gcc cleanup
attribute in its public API, hence let's do the same for our APIs.
With this patch we'll define an xyz_unrefp() call for each public
xyz_unref() call, to make it easy to use inside a
__attribute__((cleanup())) expression. Then, all code is ported over to
make use of this.
The new calls are also documented in the man pages, with examples how to
use them (well, I only added docs where the _unref() call itself already
had docs, and the examples, only cover sd_bus_unrefp() and
sd_event_unrefp()).
This also renames sd_lldp_free() to sd_lldp_unref(), since that's how we
tend to call our destructors these days.
Note that this defines no public macro that wraps gcc's attribute and
makes it easier to use. While I think it's our duty in the library to
make our stuff easy to use, I figure it's not our duty to make gcc's own
features easy to use on its own. Most likely, client code which wants to
make use of this should define its own:
#define _cleanup_(function) __attribute__((cleanup(function)))
Or similar, to make the gcc feature easier to use.
Making this logic public has the benefit that we can remove three header
files whose only purpose was to define these functions internally.
See #2008.
2015-11-27 19:13:45 +01:00
_cleanup_ ( sd_bus_message_unrefp ) sd_bus_message * reply = NULL ;
2013-11-05 01:10:21 +01:00
Manager * m = userdata ;
Seat * seat ;
Iterator i ;
int r ;
assert ( message ) ;
assert ( m ) ;
2013-11-21 01:51:16 +01:00
r = sd_bus_message_new_method_return ( message , & reply ) ;
2013-11-05 01:10:21 +01:00
if ( r < 0 )
2013-11-21 19:34:37 +01:00
return r ;
2013-11-05 01:10:21 +01:00
r = sd_bus_message_open_container ( reply , ' a ' , " (so) " ) ;
if ( r < 0 )
2013-11-21 19:34:37 +01:00
return r ;
2013-11-05 01:10:21 +01:00
HASHMAP_FOREACH ( seat , m - > seats , i ) {
_cleanup_free_ char * p = NULL ;
p = seat_bus_path ( seat ) ;
if ( ! p )
2013-11-21 19:34:37 +01:00
return - ENOMEM ;
2013-11-05 01:10:21 +01:00
2013-11-05 01:20:52 +01:00
r = sd_bus_message_append ( reply , " (so) " , seat - > id , p ) ;
2013-11-05 01:10:21 +01:00
if ( r < 0 )
2013-11-21 19:34:37 +01:00
return r ;
2013-11-05 01:10:21 +01:00
}
r = sd_bus_message_close_container ( reply ) ;
if ( r < 0 )
2013-11-21 19:34:37 +01:00
return r ;
2013-11-05 01:10:21 +01:00
2015-04-29 18:58:30 +02:00
return sd_bus_send ( NULL , reply , NULL ) ;
2013-11-05 01:10:21 +01:00
}
2015-04-29 18:35:10 +02:00
static int method_list_inhibitors ( sd_bus_message * message , void * userdata , sd_bus_error * error ) {
tree-wide: expose "p"-suffix unref calls in public APIs to make gcc cleanup easy
GLIB has recently started to officially support the gcc cleanup
attribute in its public API, hence let's do the same for our APIs.
With this patch we'll define an xyz_unrefp() call for each public
xyz_unref() call, to make it easy to use inside a
__attribute__((cleanup())) expression. Then, all code is ported over to
make use of this.
The new calls are also documented in the man pages, with examples how to
use them (well, I only added docs where the _unref() call itself already
had docs, and the examples, only cover sd_bus_unrefp() and
sd_event_unrefp()).
This also renames sd_lldp_free() to sd_lldp_unref(), since that's how we
tend to call our destructors these days.
Note that this defines no public macro that wraps gcc's attribute and
makes it easier to use. While I think it's our duty in the library to
make our stuff easy to use, I figure it's not our duty to make gcc's own
features easy to use on its own. Most likely, client code which wants to
make use of this should define its own:
#define _cleanup_(function) __attribute__((cleanup(function)))
Or similar, to make the gcc feature easier to use.
Making this logic public has the benefit that we can remove three header
files whose only purpose was to define these functions internally.
See #2008.
2015-11-27 19:13:45 +01:00
_cleanup_ ( sd_bus_message_unrefp ) sd_bus_message * reply = NULL ;
2013-11-05 01:10:21 +01:00
Manager * m = userdata ;
Inhibitor * inhibitor ;
Iterator i ;
int r ;
2015-04-29 18:35:10 +02:00
assert ( message ) ;
assert ( m ) ;
2013-11-21 01:51:16 +01:00
r = sd_bus_message_new_method_return ( message , & reply ) ;
2013-11-05 01:10:21 +01:00
if ( r < 0 )
2013-11-21 19:34:37 +01:00
return r ;
2013-11-05 01:10:21 +01:00
r = sd_bus_message_open_container ( reply , ' a ' , " (ssssuu) " ) ;
if ( r < 0 )
2013-11-21 19:34:37 +01:00
return r ;
2013-11-05 01:10:21 +01:00
HASHMAP_FOREACH ( inhibitor , m - > inhibitors , i ) {
2013-11-05 17:47:15 +01:00
r = sd_bus_message_append ( reply , " (ssssuu) " ,
2013-11-05 01:10:21 +01:00
strempty ( inhibit_what_to_string ( inhibitor - > what ) ) ,
strempty ( inhibitor - > who ) ,
strempty ( inhibitor - > why ) ,
strempty ( inhibit_mode_to_string ( inhibitor - > mode ) ) ,
( uint32_t ) inhibitor - > uid ,
( uint32_t ) inhibitor - > pid ) ;
if ( r < 0 )
2013-11-21 19:34:37 +01:00
return r ;
2013-11-05 01:10:21 +01:00
}
r = sd_bus_message_close_container ( reply ) ;
if ( r < 0 )
2013-11-21 19:34:37 +01:00
return r ;
2013-11-05 01:10:21 +01:00
2015-04-29 18:58:30 +02:00
return sd_bus_send ( NULL , reply , NULL ) ;
2013-11-05 01:10:21 +01:00
}
2015-04-29 18:35:10 +02:00
static int method_create_session ( sd_bus_message * message , void * userdata , sd_bus_error * error ) {
2014-02-05 20:34:11 +01:00
const char * service , * type , * class , * cseat , * tty , * display , * remote_user , * remote_host , * desktop ;
2015-11-15 22:00:47 +01:00
uint32_t audit_id = 0 ;
2013-11-05 01:10:21 +01:00
_cleanup_free_ char * id = NULL ;
Session * session = NULL ;
Manager * m = userdata ;
User * user = NULL ;
Seat * seat = NULL ;
2015-11-15 22:00:47 +01:00
pid_t leader ;
uid_t uid ;
2013-11-05 01:10:21 +01:00
int remote ;
uint32_t vtnr = 0 ;
SessionType t ;
SessionClass c ;
int r ;
assert ( message ) ;
assert ( m ) ;
2015-11-15 22:00:47 +01:00
assert_cc ( sizeof ( pid_t ) = = sizeof ( uint32_t ) ) ;
assert_cc ( sizeof ( uid_t ) = = sizeof ( uint32_t ) ) ;
2014-02-05 20:34:11 +01:00
r = sd_bus_message_read ( message , " uusssssussbss " , & uid , & leader , & service , & type , & class , & desktop , & cseat , & vtnr , & tty , & display , & remote , & remote_user , & remote_host ) ;
2013-11-05 01:10:21 +01:00
if ( r < 0 )
2013-11-21 19:34:37 +01:00
return r ;
2013-11-05 01:10:21 +01:00
2015-11-15 22:00:47 +01:00
if ( ! uid_is_valid ( uid ) )
return sd_bus_error_setf ( error , SD_BUS_ERROR_INVALID_ARGS , " Invalid UID " ) ;
if ( leader < 0 | | leader = = 1 )
2013-11-21 19:34:37 +01:00
return sd_bus_error_setf ( error , SD_BUS_ERROR_INVALID_ARGS , " Invalid leader PID " ) ;
2011-06-24 18:50:50 +02:00
2013-04-09 22:18:16 +02:00
if ( isempty ( type ) )
t = _SESSION_TYPE_INVALID ;
else {
t = session_type_from_string ( type ) ;
if ( t < 0 )
2013-11-21 19:34:37 +01:00
return sd_bus_error_setf ( error , SD_BUS_ERROR_INVALID_ARGS , " Invalid session type %s " , type ) ;
2013-04-09 22:18:16 +02:00
}
2011-06-24 18:50:50 +02:00
2012-02-14 21:33:51 +01:00
if ( isempty ( class ) )
2013-04-09 22:18:16 +02:00
c = _SESSION_CLASS_INVALID ;
else {
2012-02-14 21:33:51 +01:00
c = session_class_from_string ( class ) ;
2013-04-09 22:18:16 +02:00
if ( c < 0 )
2013-11-21 19:34:37 +01:00
return sd_bus_error_setf ( error , SD_BUS_ERROR_INVALID_ARGS , " Invalid session class %s " , class ) ;
2013-04-09 22:18:16 +02:00
}
2012-02-14 21:33:51 +01:00
2014-02-05 20:34:11 +01:00
if ( isempty ( desktop ) )
desktop = NULL ;
else {
if ( ! string_is_safe ( desktop ) )
return sd_bus_error_setf ( error , SD_BUS_ERROR_INVALID_ARGS , " Invalid desktop string %s " , desktop ) ;
}
2013-03-05 03:29:54 +01:00
if ( isempty ( cseat ) )
seat = NULL ;
2011-06-24 18:50:50 +02:00
else {
2013-03-05 03:29:54 +01:00
seat = hashmap_get ( m - > seats , cseat ) ;
if ( ! seat )
2013-12-28 15:05:45 +01:00
return sd_bus_error_setf ( error , BUS_ERROR_NO_SUCH_SEAT , " No seat '%s' known " , cseat ) ;
2011-06-24 18:50:50 +02:00
}
if ( tty_is_vc ( tty ) ) {
2011-06-27 22:44:12 +02:00
int v ;
2011-06-24 18:50:50 +02:00
2013-03-05 03:29:54 +01:00
if ( ! seat )
2013-09-17 17:39:59 +02:00
seat = m - > seat0 ;
else if ( seat ! = m - > seat0 )
2013-12-28 15:05:45 +01:00
return sd_bus_error_setf ( error , SD_BUS_ERROR_INVALID_ARGS , " TTY %s is virtual console but seat %s is not seat0 " , tty , seat - > id ) ;
2011-06-24 18:50:50 +02:00
2011-06-27 22:44:12 +02:00
v = vtnr_from_tty ( tty ) ;
if ( v < = 0 )
2013-11-21 19:34:37 +01:00
return sd_bus_error_setf ( error , SD_BUS_ERROR_INVALID_ARGS , " Cannot determine VT number from virtual console TTY %s " , tty ) ;
2011-06-24 18:50:50 +02:00
2013-11-28 17:05:34 +01:00
if ( ! vtnr )
2011-06-27 22:44:12 +02:00
vtnr = ( uint32_t ) v ;
else if ( vtnr ! = ( uint32_t ) v )
2013-11-21 19:34:37 +01:00
return sd_bus_error_setf ( error , SD_BUS_ERROR_INVALID_ARGS , " Specified TTY and VT number do not match " ) ;
2013-11-05 01:10:21 +01:00
2012-04-22 02:30:13 +02:00
} else if ( tty_is_console ( tty ) ) {
2013-03-05 03:29:54 +01:00
if ( ! seat )
2013-09-17 17:39:59 +02:00
seat = m - > seat0 ;
else if ( seat ! = m - > seat0 )
2013-11-21 19:34:37 +01:00
return sd_bus_error_setf ( error , SD_BUS_ERROR_INVALID_ARGS , " Console TTY specified but seat is not seat0 " ) ;
2012-04-22 02:30:13 +02:00
if ( vtnr ! = 0 )
2013-11-21 19:34:37 +01:00
return sd_bus_error_setf ( error , SD_BUS_ERROR_INVALID_ARGS , " Console TTY specified but VT number is not 0 " ) ;
2012-10-28 17:37:16 +01:00
}
2011-06-24 18:50:50 +02:00
2013-03-05 03:29:54 +01:00
if ( seat ) {
2013-09-17 17:40:02 +02:00
if ( seat_has_vts ( seat ) ) {
2013-11-28 17:25:25 +01:00
if ( ! vtnr | | vtnr > 63 )
2013-11-21 19:34:37 +01:00
return sd_bus_error_setf ( error , SD_BUS_ERROR_INVALID_ARGS , " VT number out of range " ) ;
2011-06-27 22:44:12 +02:00
} else {
2012-04-22 02:30:13 +02:00
if ( vtnr ! = 0 )
2013-11-21 19:34:37 +01:00
return sd_bus_error_setf ( error , SD_BUS_ERROR_INVALID_ARGS , " Seat has no VTs but VT number not 0 " ) ;
2011-06-27 22:44:12 +02:00
}
}
2013-11-05 01:10:21 +01:00
r = sd_bus_message_enter_container ( message , ' a ' , " (sv) " ) ;
if ( r < 0 )
2013-11-21 19:34:37 +01:00
return r ;
2011-06-24 18:50:50 +02:00
2013-04-09 22:18:16 +02:00
if ( t = = _SESSION_TYPE_INVALID ) {
if ( ! isempty ( display ) )
t = SESSION_X11 ;
else if ( ! isempty ( tty ) )
t = SESSION_TTY ;
else
t = SESSION_UNSPECIFIED ;
}
if ( c = = _SESSION_CLASS_INVALID ) {
2014-02-05 20:34:11 +01:00
if ( t = = SESSION_UNSPECIFIED )
2013-04-09 22:18:16 +02:00
c = SESSION_BACKGROUND ;
2014-02-05 20:34:11 +01:00
else
c = SESSION_USER ;
2013-04-09 22:18:16 +02:00
}
2015-11-15 22:00:47 +01:00
if ( leader = = 0 ) {
tree-wide: expose "p"-suffix unref calls in public APIs to make gcc cleanup easy
GLIB has recently started to officially support the gcc cleanup
attribute in its public API, hence let's do the same for our APIs.
With this patch we'll define an xyz_unrefp() call for each public
xyz_unref() call, to make it easy to use inside a
__attribute__((cleanup())) expression. Then, all code is ported over to
make use of this.
The new calls are also documented in the man pages, with examples how to
use them (well, I only added docs where the _unref() call itself already
had docs, and the examples, only cover sd_bus_unrefp() and
sd_event_unrefp()).
This also renames sd_lldp_free() to sd_lldp_unref(), since that's how we
tend to call our destructors these days.
Note that this defines no public macro that wraps gcc's attribute and
makes it easier to use. While I think it's our duty in the library to
make our stuff easy to use, I figure it's not our duty to make gcc's own
features easy to use on its own. Most likely, client code which wants to
make use of this should define its own:
#define _cleanup_(function) __attribute__((cleanup(function)))
Or similar, to make the gcc feature easier to use.
Making this logic public has the benefit that we can remove three header
files whose only purpose was to define these functions internally.
See #2008.
2015-11-27 19:13:45 +01:00
_cleanup_ ( sd_bus_creds_unrefp ) sd_bus_creds * creds = NULL ;
2013-11-28 17:50:02 +01:00
r = sd_bus_query_sender_creds ( message , SD_BUS_CREDS_PID , & creds ) ;
if ( r < 0 )
return r ;
r = sd_bus_creds_get_pid ( creds , ( pid_t * ) & leader ) ;
2013-11-05 01:10:21 +01:00
if ( r < 0 )
2013-11-21 19:34:37 +01:00
return r ;
2013-06-20 03:45:08 +02:00
}
2015-07-07 19:38:41 +02:00
r = manager_get_session_by_pid ( m , leader , NULL ) ;
if ( r > 0 )
return sd_bus_error_setf ( error , BUS_ERROR_SESSION_BUSY , " Already running in a session " ) ;
/*
* Old gdm and lightdm start the user - session on the same VT as
* the greeter session . But they destroy the greeter session
* after the user - session and want the user - session to take
* over the VT . We need to support this for
* backwards - compatibility , so make sure we allow new sessions
2015-07-10 14:53:08 +02:00
* on a VT that a greeter is running on . Furthermore , to allow
* re - logins , we have to allow a greeter to take over a used VT for
* the exact same reasons .
2015-07-07 19:38:41 +02:00
*/
2015-07-10 14:53:08 +02:00
if ( c ! = SESSION_GREETER & &
vtnr > 0 & &
2015-07-07 19:38:41 +02:00
vtnr < m - > seat0 - > position_count & &
m - > seat0 - > positions [ vtnr ] & &
m - > seat0 - > positions [ vtnr ] - > class ! = SESSION_GREETER )
return sd_bus_error_setf ( error , BUS_ERROR_SESSION_BUSY , " Already occupied by a session " ) ;
2011-06-24 22:55:39 +02:00
2016-05-04 18:57:15 +02:00
if ( hashmap_size ( m - > sessions ) > = m - > sessions_max )
return sd_bus_error_setf ( error , SD_BUS_ERROR_LIMITS_EXCEEDED , " Maximum number of sessions (% " PRIu64 " ) reached , refusing further sessions . " , m->sessions_max) ;
2017-07-14 18:42:17 +02:00
( void ) audit_session_from_pid ( leader , & audit_id ) ;
if ( audit_session_is_valid ( audit_id ) ) {
2013-03-05 03:29:54 +01:00
/* Keep our session IDs and the audit session IDs in sync */
2011-06-24 22:55:39 +02:00
2014-04-25 13:45:15 +02:00
if ( asprintf ( & id , " % " PRIu32 , audit_id ) < 0 )
2013-11-21 19:34:37 +01:00
return - ENOMEM ;
2011-06-24 22:55:39 +02:00
2013-03-05 03:29:54 +01:00
/* Wut? There's already a session by this name and we
* didn ' t find it above ? Weird , then let ' s not trust
* the audit data and let ' s better register a new
* ID */
if ( hashmap_get ( m - > sessions , id ) ) {
2013-09-16 04:26:56 +02:00
log_warning ( " Existing logind session ID %s used by new audit session, ignoring " , id ) ;
2017-07-14 18:42:17 +02:00
audit_id = AUDIT_SESSION_INVALID ;
2011-09-23 01:43:28 +02:00
2015-07-31 19:56:38 +02:00
id = mfree ( id ) ;
2011-06-24 20:46:22 +02:00
}
2013-03-05 03:29:54 +01:00
}
2011-06-24 20:46:22 +02:00
2013-03-05 03:29:54 +01:00
if ( ! id ) {
2011-06-24 20:46:22 +02:00
do {
2015-07-31 19:56:38 +02:00
id = mfree ( id ) ;
2011-06-24 20:46:22 +02:00
2013-11-05 01:10:21 +01:00
if ( asprintf ( & id , " c%lu " , + + m - > session_counter ) < 0 )
2013-11-21 19:34:37 +01:00
return - ENOMEM ;
2011-06-24 20:46:22 +02:00
} while ( hashmap_get ( m - > sessions , id ) ) ;
2011-06-24 18:50:50 +02:00
}
2013-03-05 03:29:54 +01:00
r = manager_add_user_by_uid ( m , uid , & user ) ;
2013-11-21 19:34:37 +01:00
if ( r < 0 )
2013-03-05 03:29:54 +01:00
goto fail ;
2013-06-20 03:45:08 +02:00
r = manager_add_session ( m , id , & session ) ;
2013-11-21 19:34:37 +01:00
if ( r < 0 )
2011-06-24 18:50:50 +02:00
goto fail ;
2013-06-20 03:45:08 +02:00
session_set_user ( session , user ) ;
2011-06-24 18:50:50 +02:00
session - > leader = leader ;
session - > audit_id = audit_id ;
session - > type = t ;
2012-02-14 21:33:51 +01:00
session - > class = c ;
2011-06-24 18:50:50 +02:00
session - > remote = remote ;
session - > vtnr = vtnr ;
if ( ! isempty ( tty ) ) {
session - > tty = strdup ( tty ) ;
if ( ! session - > tty ) {
2013-11-21 19:34:37 +01:00
r = - ENOMEM ;
2011-06-24 18:50:50 +02:00
goto fail ;
}
}
if ( ! isempty ( display ) ) {
session - > display = strdup ( display ) ;
if ( ! session - > display ) {
2013-11-21 19:34:37 +01:00
r = - ENOMEM ;
2011-06-24 18:50:50 +02:00
goto fail ;
}
}
if ( ! isempty ( remote_user ) ) {
session - > remote_user = strdup ( remote_user ) ;
if ( ! session - > remote_user ) {
2013-11-21 19:34:37 +01:00
r = - ENOMEM ;
2011-06-24 18:50:50 +02:00
goto fail ;
}
}
if ( ! isempty ( remote_host ) ) {
session - > remote_host = strdup ( remote_host ) ;
if ( ! session - > remote_host ) {
2013-11-21 19:34:37 +01:00
r = - ENOMEM ;
2011-06-24 18:50:50 +02:00
goto fail ;
}
}
if ( ! isempty ( service ) ) {
session - > service = strdup ( service ) ;
if ( ! session - > service ) {
2013-11-21 19:34:37 +01:00
r = - ENOMEM ;
2011-06-24 18:50:50 +02:00
goto fail ;
}
}
2014-02-05 20:34:11 +01:00
if ( ! isempty ( desktop ) ) {
session - > desktop = strdup ( desktop ) ;
if ( ! session - > desktop ) {
r = - ENOMEM ;
goto fail ;
}
}
2013-03-05 03:29:54 +01:00
if ( seat ) {
r = seat_attach_session ( seat , session ) ;
2013-11-21 19:34:37 +01:00
if ( r < 0 )
2011-06-24 18:50:50 +02:00
goto fail ;
}
r = session_start ( session ) ;
2013-11-21 19:34:37 +01:00
if ( r < 0 )
2011-06-24 18:50:50 +02:00
goto fail ;
2013-11-05 01:10:21 +01:00
session - > create_message = sd_bus_message_ref ( message ) ;
2011-06-24 18:50:50 +02:00
2013-07-26 17:32:19 +02:00
/* Now, let's wait until the slice unit and stuff got
* created . We send the reply back from
2014-12-10 20:00:09 +01:00
* session_send_create_reply ( ) . */
2013-07-26 17:32:19 +02:00
2013-11-05 01:10:21 +01:00
return 1 ;
2011-06-24 18:50:50 +02:00
fail :
if ( session )
session_add_to_gc_queue ( session ) ;
if ( user )
user_add_to_gc_queue ( user ) ;
return r ;
}
2015-04-29 18:35:10 +02:00
static int method_release_session ( sd_bus_message * message , void * userdata , sd_bus_error * error ) {
2013-11-05 01:10:21 +01:00
Manager * m = userdata ;
Session * session ;
const char * name ;
int r ;
2013-01-25 06:30:23 +01:00
2013-11-05 01:10:21 +01:00
assert ( message ) ;
assert ( m ) ;
r = sd_bus_message_read ( message , " s " , & name ) ;
if ( r < 0 )
2013-11-21 19:34:37 +01:00
return r ;
2013-11-05 01:10:21 +01:00
2015-01-09 16:14:19 +01:00
r = manager_get_session_from_creds ( m , message , name , error , & session ) ;
if ( r < 0 )
return r ;
2013-11-05 01:10:21 +01:00
2015-03-15 21:37:39 +01:00
r = session_release ( session ) ;
if ( r < 0 )
return r ;
2013-11-05 01:10:21 +01:00
2013-11-21 01:51:16 +01:00
return sd_bus_reply_method_return ( message , NULL ) ;
2013-11-05 01:10:21 +01:00
}
2015-04-29 18:35:10 +02:00
static int method_activate_session ( sd_bus_message * message , void * userdata , sd_bus_error * error ) {
2013-11-05 01:10:21 +01:00
Manager * m = userdata ;
Session * session ;
const char * name ;
int r ;
2012-04-16 16:47:33 +02:00
2013-11-05 01:10:21 +01:00
assert ( message ) ;
2012-04-16 16:47:33 +02:00
assert ( m ) ;
2013-11-05 01:10:21 +01:00
r = sd_bus_message_read ( message , " s " , & name ) ;
if ( r < 0 )
2013-11-21 19:34:37 +01:00
return r ;
2013-11-05 01:10:21 +01:00
2015-01-09 16:14:19 +01:00
r = manager_get_session_from_creds ( m , message , name , error , & session ) ;
if ( r < 0 )
return r ;
2013-11-05 01:10:21 +01:00
2015-04-29 18:35:10 +02:00
return bus_session_method_activate ( message , session , error ) ;
2013-11-05 01:10:21 +01:00
}
2015-04-29 18:35:10 +02:00
static int method_activate_session_on_seat ( sd_bus_message * message , void * userdata , sd_bus_error * error ) {
2013-11-05 01:10:21 +01:00
const char * session_name , * seat_name ;
Manager * m = userdata ;
Session * session ;
Seat * seat ;
int r ;
2012-04-16 16:47:33 +02:00
assert ( message ) ;
2013-11-05 01:10:21 +01:00
assert ( m ) ;
2012-04-16 16:47:33 +02:00
2013-11-05 01:10:21 +01:00
/* Same as ActivateSession() but refuses to work if
* the seat doesn ' t match */
2012-04-16 16:47:33 +02:00
2013-11-05 01:10:21 +01:00
r = sd_bus_message_read ( message , " ss " , & session_name , & seat_name ) ;
if ( r < 0 )
2013-11-21 19:34:37 +01:00
return r ;
2012-05-05 00:34:48 +02:00
2015-01-09 16:14:19 +01:00
r = manager_get_session_from_creds ( m , message , session_name , error , & session ) ;
if ( r < 0 )
return r ;
2012-09-19 13:10:10 +02:00
2015-01-09 16:14:19 +01:00
r = manager_get_seat_from_creds ( m , message , seat_name , error , & seat ) ;
if ( r < 0 )
return r ;
2013-01-25 06:30:23 +01:00
2013-11-05 01:10:21 +01:00
if ( session - > seat ! = seat )
2013-11-21 19:34:37 +01:00
return sd_bus_error_setf ( error , BUS_ERROR_SESSION_NOT_ON_SEAT , " Session %s not on seat %s " , session_name , seat_name ) ;
2013-11-05 01:10:21 +01:00
r = session_activate ( session ) ;
2012-04-16 16:47:33 +02:00
if ( r < 0 )
2013-11-21 19:34:37 +01:00
return r ;
2012-04-16 16:47:33 +02:00
2013-11-21 01:51:16 +01:00
return sd_bus_reply_method_return ( message , NULL ) ;
2013-11-05 01:10:21 +01:00
}
2012-04-16 16:47:33 +02:00
2015-04-29 18:35:10 +02:00
static int method_lock_session ( sd_bus_message * message , void * userdata , sd_bus_error * error ) {
2013-11-05 01:10:21 +01:00
Manager * m = userdata ;
Session * session ;
const char * name ;
int r ;
2012-04-16 16:47:33 +02:00
2013-11-05 01:10:21 +01:00
assert ( message ) ;
assert ( m ) ;
2012-04-16 16:47:33 +02:00
2013-11-05 01:10:21 +01:00
r = sd_bus_message_read ( message , " s " , & name ) ;
if ( r < 0 )
2013-11-21 19:34:37 +01:00
return r ;
2012-04-16 16:47:33 +02:00
2015-01-09 16:14:19 +01:00
r = manager_get_session_from_creds ( m , message , name , error , & session ) ;
if ( r < 0 )
return r ;
2012-04-16 16:47:33 +02:00
2015-04-29 18:35:10 +02:00
return bus_session_method_lock ( message , session , error ) ;
2013-11-05 01:10:21 +01:00
}
2012-04-16 16:47:33 +02:00
2015-04-29 18:35:10 +02:00
static int method_lock_sessions ( sd_bus_message * message , void * userdata , sd_bus_error * error ) {
2013-11-05 01:10:21 +01:00
Manager * m = userdata ;
int r ;
2012-04-16 16:47:33 +02:00
2013-11-05 01:10:21 +01:00
assert ( message ) ;
assert ( m ) ;
2012-04-16 16:47:33 +02:00
2015-02-18 12:55:25 +01:00
r = bus_verify_polkit_async (
message ,
CAP_SYS_ADMIN ,
" org.freedesktop.login1.lock-sessions " ,
2015-09-05 16:07:16 +02:00
NULL ,
2015-02-18 12:55:25 +01:00
false ,
UID_INVALID ,
& m - > polkit_registry ,
error ) ;
if ( r < 0 )
return r ;
if ( r = = 0 )
return 1 ; /* Will call us back */
2013-11-05 01:10:21 +01:00
r = session_send_lock_all ( m , streq ( sd_bus_message_get_member ( message ) , " LockSessions " ) ) ;
if ( r < 0 )
2013-11-21 19:34:37 +01:00
return r ;
2012-04-16 16:47:33 +02:00
2013-11-21 01:51:16 +01:00
return sd_bus_reply_method_return ( message , NULL ) ;
2013-11-05 01:10:21 +01:00
}
2015-04-29 18:35:10 +02:00
static int method_kill_session ( sd_bus_message * message , void * userdata , sd_bus_error * error ) {
2015-02-18 12:55:25 +01:00
const char * name ;
2013-11-05 01:10:21 +01:00
Manager * m = userdata ;
Session * session ;
int r ;
assert ( message ) ;
assert ( m ) ;
2015-02-18 12:55:25 +01:00
r = sd_bus_message_read ( message , " s " , & name ) ;
2013-11-05 01:10:21 +01:00
if ( r < 0 )
2013-11-21 19:34:37 +01:00
return r ;
2013-11-05 01:10:21 +01:00
2015-01-09 16:14:19 +01:00
r = manager_get_session_from_creds ( m , message , name , error , & session ) ;
if ( r < 0 )
return r ;
2012-04-16 16:47:33 +02:00
2015-04-29 18:35:10 +02:00
return bus_session_method_kill ( message , session , error ) ;
2013-11-05 01:10:21 +01:00
}
2012-04-16 16:47:33 +02:00
2015-04-29 18:35:10 +02:00
static int method_kill_user ( sd_bus_message * message , void * userdata , sd_bus_error * error ) {
2013-11-05 01:10:21 +01:00
Manager * m = userdata ;
uint32_t uid ;
User * user ;
int r ;
2012-04-16 16:47:33 +02:00
2013-11-05 01:10:21 +01:00
assert ( message ) ;
assert ( m ) ;
2015-02-18 12:55:25 +01:00
r = sd_bus_message_read ( message , " u " , & uid ) ;
2013-11-05 01:10:21 +01:00
if ( r < 0 )
2013-11-21 19:34:37 +01:00
return r ;
2013-11-05 01:10:21 +01:00
2015-01-09 16:14:19 +01:00
r = manager_get_user_from_creds ( m , message , uid , error , & user ) ;
if ( r < 0 )
return r ;
2013-11-05 01:10:21 +01:00
2015-04-29 18:35:10 +02:00
return bus_user_method_kill ( message , user , error ) ;
2013-11-05 01:10:21 +01:00
}
2015-04-29 18:35:10 +02:00
static int method_terminate_session ( sd_bus_message * message , void * userdata , sd_bus_error * error ) {
2013-11-05 01:10:21 +01:00
Manager * m = userdata ;
const char * name ;
Session * session ;
int r ;
assert ( message ) ;
assert ( m ) ;
r = sd_bus_message_read ( message , " s " , & name ) ;
if ( r < 0 )
2013-11-21 19:34:37 +01:00
return r ;
2013-11-05 01:10:21 +01:00
2015-01-09 16:14:19 +01:00
r = manager_get_session_from_creds ( m , message , name , error , & session ) ;
if ( r < 0 )
return r ;
2013-11-05 01:10:21 +01:00
2015-04-29 18:35:10 +02:00
return bus_session_method_terminate ( message , session , error ) ;
2013-11-05 01:10:21 +01:00
}
2015-04-29 18:35:10 +02:00
static int method_terminate_user ( sd_bus_message * message , void * userdata , sd_bus_error * error ) {
2013-11-05 01:10:21 +01:00
Manager * m = userdata ;
uint32_t uid ;
User * user ;
int r ;
assert ( message ) ;
assert ( m ) ;
r = sd_bus_message_read ( message , " u " , & uid ) ;
if ( r < 0 )
2013-11-21 19:34:37 +01:00
return r ;
2013-11-05 01:10:21 +01:00
2015-01-09 16:14:19 +01:00
r = manager_get_user_from_creds ( m , message , uid , error , & user ) ;
if ( r < 0 )
return r ;
2013-11-05 01:10:21 +01:00
2015-04-29 18:35:10 +02:00
return bus_user_method_terminate ( message , user , error ) ;
2013-11-05 01:10:21 +01:00
}
2015-04-29 18:35:10 +02:00
static int method_terminate_seat ( sd_bus_message * message , void * userdata , sd_bus_error * error ) {
2013-11-05 01:10:21 +01:00
Manager * m = userdata ;
const char * name ;
Seat * seat ;
int r ;
assert ( message ) ;
assert ( m ) ;
r = sd_bus_message_read ( message , " s " , & name ) ;
if ( r < 0 )
2013-11-21 19:34:37 +01:00
return r ;
2013-11-05 01:10:21 +01:00
2015-01-09 16:14:19 +01:00
r = manager_get_seat_from_creds ( m , message , name , error , & seat ) ;
if ( r < 0 )
return r ;
2013-11-05 01:10:21 +01:00
2015-04-29 18:35:10 +02:00
return bus_seat_method_terminate ( message , seat , error ) ;
2013-11-05 01:10:21 +01:00
}
2015-04-29 18:35:10 +02:00
static int method_set_user_linger ( sd_bus_message * message , void * userdata , sd_bus_error * error ) {
2013-11-05 01:10:21 +01:00
_cleanup_free_ char * cc = NULL ;
Manager * m = userdata ;
2016-04-13 04:52:28 +02:00
int r , b , interactive ;
2013-11-05 01:10:21 +01:00
struct passwd * pw ;
const char * path ;
uint32_t uid ;
2016-04-13 04:52:28 +02:00
bool self = false ;
2013-11-05 01:10:21 +01:00
assert ( message ) ;
assert ( m ) ;
r = sd_bus_message_read ( message , " ubb " , & uid , & b , & interactive ) ;
if ( r < 0 )
2013-11-21 19:34:37 +01:00
return r ;
2013-11-05 01:10:21 +01:00
2017-07-14 18:57:04 +02:00
if ( ! uid_is_valid ( uid ) ) {
tree-wide: expose "p"-suffix unref calls in public APIs to make gcc cleanup easy
GLIB has recently started to officially support the gcc cleanup
attribute in its public API, hence let's do the same for our APIs.
With this patch we'll define an xyz_unrefp() call for each public
xyz_unref() call, to make it easy to use inside a
__attribute__((cleanup())) expression. Then, all code is ported over to
make use of this.
The new calls are also documented in the man pages, with examples how to
use them (well, I only added docs where the _unref() call itself already
had docs, and the examples, only cover sd_bus_unrefp() and
sd_event_unrefp()).
This also renames sd_lldp_free() to sd_lldp_unref(), since that's how we
tend to call our destructors these days.
Note that this defines no public macro that wraps gcc's attribute and
makes it easier to use. While I think it's our duty in the library to
make our stuff easy to use, I figure it's not our duty to make gcc's own
features easy to use on its own. Most likely, client code which wants to
make use of this should define its own:
#define _cleanup_(function) __attribute__((cleanup(function)))
Or similar, to make the gcc feature easier to use.
Making this logic public has the benefit that we can remove three header
files whose only purpose was to define these functions internally.
See #2008.
2015-11-27 19:13:45 +01:00
_cleanup_ ( sd_bus_creds_unrefp ) sd_bus_creds * creds = NULL ;
2015-01-09 16:14:19 +01:00
/* Note that we get the owner UID of the session, not the actual client UID here! */
r = sd_bus_query_sender_creds ( message , SD_BUS_CREDS_OWNER_UID | SD_BUS_CREDS_AUGMENT , & creds ) ;
if ( r < 0 )
return r ;
r = sd_bus_creds_get_owner_uid ( creds , & uid ) ;
if ( r < 0 )
return r ;
2015-11-15 22:00:47 +01:00
2016-04-13 04:52:28 +02:00
self = true ;
2015-11-15 22:00:47 +01:00
} else if ( ! uid_is_valid ( uid ) )
return - EINVAL ;
2015-01-09 16:14:19 +01:00
2013-11-05 01:10:21 +01:00
errno = 0 ;
pw = getpwuid ( uid ) ;
if ( ! pw )
2016-01-11 18:47:14 +01:00
return errno > 0 ? - errno : - ENOENT ;
2013-11-05 01:10:21 +01:00
2014-08-18 17:44:17 +02:00
r = bus_verify_polkit_async (
message ,
CAP_SYS_ADMIN ,
2016-04-13 04:52:28 +02:00
self ? " org.freedesktop.login1.set-self-linger " : " org.freedesktop.login1.set-user-linger " ,
2015-09-05 16:07:16 +02:00
NULL ,
2014-08-18 17:44:17 +02:00
interactive ,
2015-02-18 12:55:25 +01:00
UID_INVALID ,
2014-08-18 17:44:17 +02:00
& m - > polkit_registry ,
error ) ;
2013-11-05 01:10:21 +01:00
if ( r < 0 )
2013-11-21 19:34:37 +01:00
return r ;
2013-11-05 01:10:21 +01:00
if ( r = = 0 )
return 1 ; /* No authorization for now, but the async polkit stuff will call us again when it has it */
mkdir_p_label ( " /var/lib/systemd " , 0755 ) ;
2017-10-06 09:03:33 +02:00
r = mkdir_safe_label ( " /var/lib/systemd/linger " , 0755 , 0 , 0 , false ) ;
2013-11-05 01:10:21 +01:00
if ( r < 0 )
2013-11-21 19:34:37 +01:00
return r ;
2013-11-05 01:10:21 +01:00
cc = cescape ( pw - > pw_name ) ;
if ( ! cc )
2013-11-21 19:34:37 +01:00
return - ENOMEM ;
2013-11-05 01:10:21 +01:00
2015-02-03 02:05:59 +01:00
path = strjoina ( " /var/lib/systemd/linger/ " , cc ) ;
2013-11-05 01:10:21 +01:00
if ( b ) {
User * u ;
r = touch ( path ) ;
if ( r < 0 )
2013-11-21 19:34:37 +01:00
return r ;
2013-11-05 01:10:21 +01:00
if ( manager_add_user_by_uid ( m , uid , & u ) > = 0 )
user_start ( u ) ;
} else {
User * u ;
r = unlink ( path ) ;
if ( r < 0 & & errno ! = ENOENT )
2013-11-21 19:34:37 +01:00
return - errno ;
2013-11-05 01:10:21 +01:00
2015-01-09 16:25:47 +01:00
u = hashmap_get ( m - > users , UID_TO_PTR ( uid ) ) ;
2013-11-05 01:10:21 +01:00
if ( u )
user_add_to_gc_queue ( u ) ;
}
2013-11-21 01:51:16 +01:00
return sd_bus_reply_method_return ( message , NULL ) ;
2012-04-16 16:47:33 +02:00
}
2011-07-13 21:49:21 +02:00
static int trigger_device ( Manager * m , struct udev_device * d ) {
2013-12-18 17:13:42 +01:00
_cleanup_udev_enumerate_unref_ struct udev_enumerate * e = NULL ;
2011-06-29 03:12:23 +02:00
struct udev_list_entry * first , * item ;
int r ;
assert ( m ) ;
e = udev_enumerate_new ( m - > udev ) ;
2013-12-18 17:13:42 +01:00
if ( ! e )
return - ENOMEM ;
2011-06-29 03:12:23 +02:00
2011-07-13 21:49:21 +02:00
if ( d ) {
2013-12-18 17:13:42 +01:00
r = udev_enumerate_add_match_parent ( e , d ) ;
if ( r < 0 )
return r ;
2011-07-13 21:49:21 +02:00
}
2013-12-18 17:13:42 +01:00
r = udev_enumerate_scan_devices ( e ) ;
if ( r < 0 )
return r ;
2011-06-29 03:12:23 +02:00
first = udev_enumerate_get_list_entry ( e ) ;
udev_list_entry_foreach ( item , first ) {
2013-11-05 01:10:21 +01:00
_cleanup_free_ char * t = NULL ;
2011-06-29 03:12:23 +02:00
const char * p ;
p = udev_list_entry_get_name ( item ) ;
t = strappend ( p , " /uevent " ) ;
2013-12-18 17:13:42 +01:00
if ( ! t )
return - ENOMEM ;
2011-06-29 03:12:23 +02:00
2015-07-07 01:19:25 +02:00
write_string_file ( t , " change " , WRITE_STRING_FILE_CREATE ) ;
2011-06-29 03:12:23 +02:00
}
2013-12-18 17:13:42 +01:00
return 0 ;
2011-06-29 03:12:23 +02:00
}
2011-06-28 20:50:43 +02:00
static int attach_device ( Manager * m , const char * seat , const char * sysfs ) {
2013-12-18 17:13:42 +01:00
_cleanup_udev_device_unref_ struct udev_device * d = NULL ;
2013-04-18 09:11:22 +02:00
_cleanup_free_ char * rule = NULL , * file = NULL ;
2011-06-28 21:54:52 +02:00
const char * id_for_seat ;
2011-06-28 20:50:43 +02:00
int r ;
assert ( m ) ;
assert ( seat ) ;
assert ( sysfs ) ;
d = udev_device_new_from_syspath ( m - > udev , sysfs ) ;
if ( ! d )
return - ENODEV ;
2013-12-18 17:13:42 +01:00
if ( ! udev_device_has_tag ( d , " seat " ) )
return - ENODEV ;
2011-06-28 20:50:43 +02:00
2011-06-28 21:54:52 +02:00
id_for_seat = udev_device_get_property_value ( d , " ID_FOR_SEAT " ) ;
2013-12-18 17:13:42 +01:00
if ( ! id_for_seat )
return - ENODEV ;
2011-06-28 20:50:43 +02:00
2013-12-18 17:13:42 +01:00
if ( asprintf ( & file , " /etc/udev/rules.d/72-seat-%s.rules " , id_for_seat ) < 0 )
return - ENOMEM ;
2011-06-28 20:50:43 +02:00
2013-12-18 17:13:42 +01:00
if ( asprintf ( & rule , " TAG== \" seat \" , ENV{ID_FOR_SEAT}== \" %s \" , ENV{ID_SEAT}= \" %s \" " , id_for_seat , seat ) < 0 )
return - ENOMEM ;
2011-06-28 20:50:43 +02:00
2012-05-31 12:40:20 +02:00
mkdir_p_label ( " /etc/udev/rules.d " , 0755 ) ;
2013-04-02 20:31:42 +02:00
r = write_string_file_atomic_label ( file , rule ) ;
2011-06-28 23:03:56 +02:00
if ( r < 0 )
2013-12-18 17:13:42 +01:00
return r ;
2011-06-28 20:50:43 +02:00
2013-12-18 17:13:42 +01:00
return trigger_device ( m , d ) ;
2011-06-28 20:50:43 +02:00
}
2011-06-29 03:12:23 +02:00
static int flush_devices ( Manager * m ) {
2013-04-18 09:11:22 +02:00
_cleanup_closedir_ DIR * d ;
2011-06-29 03:12:23 +02:00
assert ( m ) ;
d = opendir ( " /etc/udev/rules.d " ) ;
if ( ! d ) {
if ( errno ! = ENOENT )
2014-11-28 19:29:59 +01:00
log_warning_errno ( errno , " Failed to open /etc/udev/rules.d: %m " ) ;
2011-06-29 03:12:23 +02:00
} else {
struct dirent * de ;
2016-12-09 10:04:30 +01:00
FOREACH_DIRENT_ALL ( de , d , break ) {
2011-06-29 03:12:23 +02:00
if ( ! dirent_is_file ( de ) )
continue ;
if ( ! startswith ( de - > d_name , " 72-seat- " ) )
continue ;
if ( ! endswith ( de - > d_name , " .rules " ) )
continue ;
if ( unlinkat ( dirfd ( d ) , de - > d_name , 0 ) < 0 )
2014-11-28 19:29:59 +01:00
log_warning_errno ( errno , " Failed to unlink %s: %m " , de - > d_name ) ;
2011-06-29 03:12:23 +02:00
}
}
return trigger_device ( m , NULL ) ;
}
2015-04-29 18:35:10 +02:00
static int method_attach_device ( sd_bus_message * message , void * userdata , sd_bus_error * error ) {
2013-11-05 01:10:21 +01:00
const char * sysfs , * seat ;
Manager * m = userdata ;
int interactive , r ;
assert ( message ) ;
assert ( m ) ;
r = sd_bus_message_read ( message , " ssb " , & seat , & sysfs , & interactive ) ;
if ( r < 0 )
2013-11-21 19:34:37 +01:00
return r ;
2013-11-05 01:10:21 +01:00
if ( ! path_startswith ( sysfs , " /sys " ) )
2013-11-21 19:34:37 +01:00
return sd_bus_error_setf ( error , SD_BUS_ERROR_INVALID_ARGS , " Path %s is not in /sys " , sysfs ) ;
2013-11-05 01:10:21 +01:00
if ( ! seat_name_is_valid ( seat ) )
2013-11-21 19:34:37 +01:00
return sd_bus_error_setf ( error , SD_BUS_ERROR_INVALID_ARGS , " Seat %s is not valid " , seat ) ;
2013-11-05 01:10:21 +01:00
2014-08-18 17:44:17 +02:00
r = bus_verify_polkit_async (
message ,
CAP_SYS_ADMIN ,
" org.freedesktop.login1.attach-device " ,
2015-09-05 16:07:16 +02:00
NULL ,
2014-08-18 17:44:17 +02:00
interactive ,
2015-02-18 12:55:25 +01:00
UID_INVALID ,
2014-08-18 17:44:17 +02:00
& m - > polkit_registry ,
error ) ;
2013-11-05 01:10:21 +01:00
if ( r < 0 )
2013-11-21 19:34:37 +01:00
return r ;
2013-11-05 01:10:21 +01:00
if ( r = = 0 )
return 1 ; /* No authorization for now, but the async polkit stuff will call us again when it has it */
r = attach_device ( m , seat , sysfs ) ;
if ( r < 0 )
2013-11-21 19:34:37 +01:00
return r ;
2013-11-05 01:10:21 +01:00
2013-11-21 01:51:16 +01:00
return sd_bus_reply_method_return ( message , NULL ) ;
2013-11-05 01:10:21 +01:00
}
2015-04-29 18:35:10 +02:00
static int method_flush_devices ( sd_bus_message * message , void * userdata , sd_bus_error * error ) {
2013-11-05 01:10:21 +01:00
Manager * m = userdata ;
int interactive , r ;
assert ( message ) ;
assert ( m ) ;
r = sd_bus_message_read ( message , " b " , & interactive ) ;
if ( r < 0 )
2013-11-21 19:34:37 +01:00
return r ;
2013-11-05 01:10:21 +01:00
2014-08-18 17:44:17 +02:00
r = bus_verify_polkit_async (
message ,
CAP_SYS_ADMIN ,
" org.freedesktop.login1.flush-devices " ,
2015-09-05 16:07:16 +02:00
NULL ,
2014-08-18 17:44:17 +02:00
interactive ,
2015-02-18 12:55:25 +01:00
UID_INVALID ,
2014-08-18 17:44:17 +02:00
& m - > polkit_registry ,
error ) ;
2013-11-05 01:10:21 +01:00
if ( r < 0 )
2013-11-21 19:34:37 +01:00
return r ;
2013-11-05 01:10:21 +01:00
if ( r = = 0 )
return 1 ; /* No authorization for now, but the async polkit stuff will call us again when it has it */
r = flush_devices ( m ) ;
if ( r < 0 )
2013-11-21 19:34:37 +01:00
return r ;
2013-11-05 01:10:21 +01:00
2013-11-21 01:51:16 +01:00
return sd_bus_reply_method_return ( message , NULL ) ;
2013-11-05 01:10:21 +01:00
}
2012-02-11 00:13:10 +01:00
static int have_multiple_sessions (
Manager * m ,
2012-09-21 11:57:48 +02:00
uid_t uid ) {
2012-02-11 00:13:10 +01:00
2012-06-12 09:31:43 +02:00
Session * session ;
Iterator i ;
2012-02-11 00:13:10 +01:00
assert ( m ) ;
2013-01-14 21:40:38 +01:00
/* Check for other users' sessions. Greeter sessions do not
* count , and non - login sessions do not count either . */
2012-06-12 09:31:43 +02:00
HASHMAP_FOREACH ( session , m - > sessions , i )
2013-01-14 21:40:38 +01:00
if ( session - > class = = SESSION_USER & &
session - > user - > uid ! = uid )
2012-06-12 09:31:43 +02:00
return true ;
2012-02-11 00:13:10 +01:00
return false ;
}
2013-01-25 06:30:23 +01:00
static int bus_manager_log_shutdown (
Manager * m ,
const char * unit_name ) {
2015-09-04 10:34:47 +02:00
const char * p , * q ;
2013-01-25 06:30:23 +01:00
assert ( m ) ;
assert ( unit_name ) ;
if ( streq ( unit_name , SPECIAL_POWEROFF_TARGET ) ) {
2015-09-28 17:44:28 +02:00
p = " MESSAGE=System is powering down " ;
2013-01-25 06:30:23 +01:00
q = " SHUTDOWN=power-off " ;
} else if ( streq ( unit_name , SPECIAL_REBOOT_TARGET ) ) {
2015-09-28 17:44:28 +02:00
p = " MESSAGE=System is rebooting " ;
2013-01-25 06:30:23 +01:00
q = " SHUTDOWN=reboot " ;
logind: add Halt() and CanHalt() APIs
This adds new method calls Halt() and CanHalt() to the logind bus APIs.
They aren't overly useful (as the whole concept of halting isn't really
too useful), however they clean up one major asymmetry: currently, using
the "shutdown" legacy commands it is possibly to enqueue a "halt"
operation through logind, while logind officially doesn't actually
support this. Moreover, the path through "shutdown" currently ultimately
fails, since the referenced "halt" action isn't actually defined in
PolicyKit.
Finally, the current logic results in an unexpected asymmetry in
systemctl: "systemctl poweroff", "systemctl reboot" are currently
asynchronous (due to the logind involvement) while "systemctl halt"
isnt. Let's clean this up, and make all three APIs implemented by
logind natively, and all three hence asynchronous in "systemctl".
Moreover, let's add the missing PK action.
Fixes: #6957
2017-10-02 16:03:55 +02:00
} else if ( streq ( unit_name , SPECIAL_HALT_TARGET ) ) {
p = " MESSAGE=System is halting " ;
q = " SHUTDOWN=halt " ;
2013-01-25 06:30:23 +01:00
} else if ( streq ( unit_name , SPECIAL_KEXEC_TARGET ) ) {
2015-09-28 17:44:28 +02:00
p = " MESSAGE=System is rebooting with kexec " ;
2013-01-25 06:30:23 +01:00
q = " SHUTDOWN=kexec " ;
} else {
2015-09-28 17:44:28 +02:00
p = " MESSAGE=System is shutting down " ;
2013-01-25 06:30:23 +01:00
q = NULL ;
}
2015-09-28 17:44:28 +02:00
if ( isempty ( m - > wall_message ) )
p = strjoina ( p , " . " ) ;
else
p = strjoina ( p , " ( " , m - > wall_message , " ). " ) ;
2015-08-24 14:54:22 +02:00
2014-11-28 02:05:14 +01:00
return log_struct ( LOG_NOTICE ,
tree-wide: add SD_ID128_MAKE_STR, remove LOG_MESSAGE_ID
Embedding sd_id128_t's in constant strings was rather cumbersome. We had
SD_ID128_CONST_STR which returned a const char[], but it had two problems:
- it wasn't possible to statically concatanate this array with a normal string
- gcc wasn't really able to optimize this, and generated code to perform the
"conversion" at runtime.
Because of this, even our own code in coredumpctl wasn't using
SD_ID128_CONST_STR.
Add a new macro to generate a constant string: SD_ID128_MAKE_STR.
It is not as elegant as SD_ID128_CONST_STR, because it requires a repetition
of the numbers, but in practice it is more convenient to use, and allows gcc
to generate smarter code:
$ size .libs/systemd{,-logind,-journald}{.old,}
text data bss dec hex filename
1265204 149564 4808 1419576 15a938 .libs/systemd.old
1260268 149564 4808 1414640 1595f0 .libs/systemd
246805 13852 209 260866 3fb02 .libs/systemd-logind.old
240973 13852 209 255034 3e43a .libs/systemd-logind
146839 4984 34 151857 25131 .libs/systemd-journald.old
146391 4984 34 151409 24f71 .libs/systemd-journald
It is also much easier to check if a certain binary uses a certain MESSAGE_ID:
$ strings .libs/systemd.old|grep MESSAGE_ID
MESSAGE_ID=%02x%02x%02x%02x%02x%02x%02x%02x%02x%02x%02x%02x%02x%02x%02x%02x
MESSAGE_ID=%02x%02x%02x%02x%02x%02x%02x%02x%02x%02x%02x%02x%02x%02x%02x%02x
MESSAGE_ID=%02x%02x%02x%02x%02x%02x%02x%02x%02x%02x%02x%02x%02x%02x%02x%02x
MESSAGE_ID=%02x%02x%02x%02x%02x%02x%02x%02x%02x%02x%02x%02x%02x%02x%02x%02x
$ strings .libs/systemd|grep MESSAGE_ID
MESSAGE_ID=c7a787079b354eaaa9e77b371893cd27
MESSAGE_ID=b07a249cd024414a82dd00cd181378ff
MESSAGE_ID=641257651c1b4ec9a8624d7a40a9e1e7
MESSAGE_ID=de5b426a63be47a7b6ac3eaac82e2f6f
MESSAGE_ID=d34d037fff1847e6ae669a370e694725
MESSAGE_ID=7d4958e842da4a758f6c1cdc7b36dcc5
MESSAGE_ID=1dee0369c7fc4736b7099b38ecb46ee7
MESSAGE_ID=39f53479d3a045ac8e11786248231fbf
MESSAGE_ID=be02cf6855d2428ba40df7e9d022f03d
MESSAGE_ID=7b05ebc668384222baa8881179cfda54
MESSAGE_ID=9d1aaa27d60140bd96365438aad20286
2016-11-06 18:48:23 +01:00
" MESSAGE_ID= " SD_MESSAGE_SHUTDOWN_STR ,
2013-01-25 06:30:23 +01:00
p ,
2014-11-28 02:05:14 +01:00
q ,
NULL ) ;
2013-01-25 06:30:23 +01:00
}
2014-03-11 22:38:54 +01:00
static int lid_switch_ignore_handler ( sd_event_source * e , uint64_t usec , void * userdata ) {
Manager * m = userdata ;
assert ( e ) ;
assert ( m ) ;
m - > lid_switch_ignore_event_source = sd_event_source_unref ( m - > lid_switch_ignore_event_source ) ;
return 0 ;
}
int manager_set_lid_switch_ignore ( Manager * m , usec_t until ) {
int r ;
assert ( m ) ;
if ( until < = now ( CLOCK_MONOTONIC ) )
return 0 ;
/* We want to ignore the lid switch for a while after each
* suspend , and after boot - up . Hence let ' s install a timer for
* this . As long as the event source exists we ignore the lid
* switch . */
if ( m - > lid_switch_ignore_event_source ) {
usec_t u ;
r = sd_event_source_get_time ( m - > lid_switch_ignore_event_source , & u ) ;
if ( r < 0 )
return r ;
if ( until < = u )
return 0 ;
r = sd_event_source_set_time ( m - > lid_switch_ignore_event_source , until ) ;
} else
2014-03-24 02:49:09 +01:00
r = sd_event_add_time (
m - > event ,
& m - > lid_switch_ignore_event_source ,
CLOCK_MONOTONIC ,
until , 0 ,
lid_switch_ignore_handler , m ) ;
2014-03-11 22:38:54 +01:00
return r ;
}
2017-08-24 11:33:24 +02:00
static int send_prepare_for ( Manager * m , InhibitWhat w , bool _active ) {
static const char * const signal_name [ _INHIBIT_WHAT_MAX ] = {
[ INHIBIT_SHUTDOWN ] = " PrepareForShutdown " ,
[ INHIBIT_SLEEP ] = " PrepareForSleep "
} ;
int active = _active ;
assert ( m ) ;
assert ( w > = 0 ) ;
assert ( w < _INHIBIT_WHAT_MAX ) ;
assert ( signal_name [ w ] ) ;
return sd_bus_emit_signal ( m - > bus ,
" /org/freedesktop/login1 " ,
" org.freedesktop.login1.Manager " ,
signal_name [ w ] ,
" b " ,
active ) ;
}
2013-01-25 06:30:23 +01:00
static int execute_shutdown_or_sleep (
Manager * m ,
InhibitWhat w ,
const char * unit_name ,
2013-11-05 01:10:21 +01:00
sd_bus_error * error ) {
2013-01-25 06:30:23 +01:00
tree-wide: expose "p"-suffix unref calls in public APIs to make gcc cleanup easy
GLIB has recently started to officially support the gcc cleanup
attribute in its public API, hence let's do the same for our APIs.
With this patch we'll define an xyz_unrefp() call for each public
xyz_unref() call, to make it easy to use inside a
__attribute__((cleanup())) expression. Then, all code is ported over to
make use of this.
The new calls are also documented in the man pages, with examples how to
use them (well, I only added docs where the _unref() call itself already
had docs, and the examples, only cover sd_bus_unrefp() and
sd_event_unrefp()).
This also renames sd_lldp_free() to sd_lldp_unref(), since that's how we
tend to call our destructors these days.
Note that this defines no public macro that wraps gcc's attribute and
makes it easier to use. While I think it's our duty in the library to
make our stuff easy to use, I figure it's not our duty to make gcc's own
features easy to use on its own. Most likely, client code which wants to
make use of this should define its own:
#define _cleanup_(function) __attribute__((cleanup(function)))
Or similar, to make the gcc feature easier to use.
Making this logic public has the benefit that we can remove three header
files whose only purpose was to define these functions internally.
See #2008.
2015-11-27 19:13:45 +01:00
_cleanup_ ( sd_bus_message_unrefp ) sd_bus_message * reply = NULL ;
2015-09-09 17:05:03 +02:00
char * c = NULL ;
2013-11-05 01:10:21 +01:00
const char * p ;
int r ;
2012-05-05 00:34:48 +02:00
2013-01-24 04:56:44 +01:00
assert ( m ) ;
2017-08-24 16:21:21 +02:00
assert ( w > 0 ) ;
2013-01-25 06:30:23 +01:00
assert ( w < _INHIBIT_WHAT_MAX ) ;
2012-05-08 19:02:25 +02:00
assert ( unit_name ) ;
2012-05-05 00:34:48 +02:00
logind: respect "delay" inhibitors in scheduled shutdowns
There is no justification not to wait an extra (default) 5 seconds, for
a more graceful shutdown of user programs. Again, you don't get to ignore
delay inhibitors for unscheduled shutdowns, short of
`systemctl poweroff -f`.
It is simplest if we move the test for `m->shutdown_dry_run` into
manager_scheduled_shutdown_handler().
However we need to not add such delays during a "dry run". Otherwise, we
would still have to be considered "in progress" for some seconds after our
admin has seen the final wall message. If they go to `poweroff`, we would
have blocked them with a misleading error message. Note this `poweroff`
will still process delay inhibitors as needed. If the admin planned to
use a more forceful method... eh. It's their responsibility to assess
whether that's safe.
There is an argument that the alternative behaviour could be used (racily!)
to kludge around them not being able to shutdown to "single user mode". If
we cared about that case, we would have easily preserved non-racy support
for it in `shutdown`.
Additionally, though I think this code does read more easily by reducing
inconsistencies, we didn't come up with any use case for delay inhibitors
v.s. shutdown.[1] The SIGTERM v.s. SIGKILL delay is more general, and we
allow a whole 90 seconds for it, not just 5. So I don't think keeping this
approach bears a risk of significant damage.
[1] https://www.freedesktop.org/wiki/Software/systemd/inhibit/
2017-08-21 18:28:35 +02:00
if ( w = = INHIBIT_SHUTDOWN )
bus_manager_log_shutdown ( m , unit_name ) ;
2013-01-25 06:30:23 +01:00
logind: respect "delay" inhibitors in scheduled shutdowns
There is no justification not to wait an extra (default) 5 seconds, for
a more graceful shutdown of user programs. Again, you don't get to ignore
delay inhibitors for unscheduled shutdowns, short of
`systemctl poweroff -f`.
It is simplest if we move the test for `m->shutdown_dry_run` into
manager_scheduled_shutdown_handler().
However we need to not add such delays during a "dry run". Otherwise, we
would still have to be considered "in progress" for some seconds after our
admin has seen the final wall message. If they go to `poweroff`, we would
have blocked them with a misleading error message. Note this `poweroff`
will still process delay inhibitors as needed. If the admin planned to
use a more forceful method... eh. It's their responsibility to assess
whether that's safe.
There is an argument that the alternative behaviour could be used (racily!)
to kludge around them not being able to shutdown to "single user mode". If
we cared about that case, we would have easily preserved non-racy support
for it in `shutdown`.
Additionally, though I think this code does read more easily by reducing
inconsistencies, we didn't come up with any use case for delay inhibitors
v.s. shutdown.[1] The SIGTERM v.s. SIGKILL delay is more general, and we
allow a whole 90 seconds for it, not just 5. So I don't think keeping this
approach bears a risk of significant damage.
[1] https://www.freedesktop.org/wiki/Software/systemd/inhibit/
2017-08-21 18:28:35 +02:00
r = sd_bus_call_method (
m - > bus ,
" org.freedesktop.systemd1 " ,
" /org/freedesktop/systemd1 " ,
" org.freedesktop.systemd1.Manager " ,
" StartUnit " ,
error ,
& reply ,
" ss " , unit_name , " replace-irreversibly " ) ;
if ( r < 0 )
2017-08-24 11:33:24 +02:00
goto error ;
2013-01-24 04:56:44 +01:00
logind: respect "delay" inhibitors in scheduled shutdowns
There is no justification not to wait an extra (default) 5 seconds, for
a more graceful shutdown of user programs. Again, you don't get to ignore
delay inhibitors for unscheduled shutdowns, short of
`systemctl poweroff -f`.
It is simplest if we move the test for `m->shutdown_dry_run` into
manager_scheduled_shutdown_handler().
However we need to not add such delays during a "dry run". Otherwise, we
would still have to be considered "in progress" for some seconds after our
admin has seen the final wall message. If they go to `poweroff`, we would
have blocked them with a misleading error message. Note this `poweroff`
will still process delay inhibitors as needed. If the admin planned to
use a more forceful method... eh. It's their responsibility to assess
whether that's safe.
There is an argument that the alternative behaviour could be used (racily!)
to kludge around them not being able to shutdown to "single user mode". If
we cared about that case, we would have easily preserved non-racy support
for it in `shutdown`.
Additionally, though I think this code does read more easily by reducing
inconsistencies, we didn't come up with any use case for delay inhibitors
v.s. shutdown.[1] The SIGTERM v.s. SIGKILL delay is more general, and we
allow a whole 90 seconds for it, not just 5. So I don't think keeping this
approach bears a risk of significant damage.
[1] https://www.freedesktop.org/wiki/Software/systemd/inhibit/
2017-08-21 18:28:35 +02:00
r = sd_bus_message_read ( reply , " o " , & p ) ;
if ( r < 0 )
2017-08-24 11:33:24 +02:00
goto error ;
2013-01-24 04:56:44 +01:00
logind: respect "delay" inhibitors in scheduled shutdowns
There is no justification not to wait an extra (default) 5 seconds, for
a more graceful shutdown of user programs. Again, you don't get to ignore
delay inhibitors for unscheduled shutdowns, short of
`systemctl poweroff -f`.
It is simplest if we move the test for `m->shutdown_dry_run` into
manager_scheduled_shutdown_handler().
However we need to not add such delays during a "dry run". Otherwise, we
would still have to be considered "in progress" for some seconds after our
admin has seen the final wall message. If they go to `poweroff`, we would
have blocked them with a misleading error message. Note this `poweroff`
will still process delay inhibitors as needed. If the admin planned to
use a more forceful method... eh. It's their responsibility to assess
whether that's safe.
There is an argument that the alternative behaviour could be used (racily!)
to kludge around them not being able to shutdown to "single user mode". If
we cared about that case, we would have easily preserved non-racy support
for it in `shutdown`.
Additionally, though I think this code does read more easily by reducing
inconsistencies, we didn't come up with any use case for delay inhibitors
v.s. shutdown.[1] The SIGTERM v.s. SIGKILL delay is more general, and we
allow a whole 90 seconds for it, not just 5. So I don't think keeping this
approach bears a risk of significant damage.
[1] https://www.freedesktop.org/wiki/Software/systemd/inhibit/
2017-08-21 18:28:35 +02:00
c = strdup ( p ) ;
2017-08-24 11:33:24 +02:00
if ( ! c ) {
r = - ENOMEM ;
goto error ;
}
2013-01-24 04:56:44 +01:00
2013-01-25 06:30:23 +01:00
m - > action_unit = unit_name ;
2013-01-24 04:56:44 +01:00
free ( m - > action_job ) ;
m - > action_job = c ;
2013-01-25 06:30:23 +01:00
m - > action_what = w ;
2013-01-24 04:56:44 +01:00
2014-03-03 20:49:33 +01:00
/* Make sure the lid switch is ignored for a while */
2015-03-06 14:37:09 +01:00
manager_set_lid_switch_ignore ( m , now ( CLOCK_MONOTONIC ) + m - > holdoff_timeout_usec ) ;
2014-03-03 20:49:33 +01:00
2013-01-24 04:56:44 +01:00
return 0 ;
2017-08-24 11:33:24 +02:00
error :
/* Tell people that they now may take a lock again */
send_prepare_for ( m , m - > action_what , false ) ;
return r ;
2012-05-05 00:34:48 +02:00
}
2015-06-08 22:58:50 +02:00
int manager_dispatch_delayed ( Manager * manager , bool timeout ) {
2015-04-11 18:44:51 +02:00
tree-wide: expose "p"-suffix unref calls in public APIs to make gcc cleanup easy
GLIB has recently started to officially support the gcc cleanup
attribute in its public API, hence let's do the same for our APIs.
With this patch we'll define an xyz_unrefp() call for each public
xyz_unref() call, to make it easy to use inside a
__attribute__((cleanup())) expression. Then, all code is ported over to
make use of this.
The new calls are also documented in the man pages, with examples how to
use them (well, I only added docs where the _unref() call itself already
had docs, and the examples, only cover sd_bus_unrefp() and
sd_event_unrefp()).
This also renames sd_lldp_free() to sd_lldp_unref(), since that's how we
tend to call our destructors these days.
Note that this defines no public macro that wraps gcc's attribute and
makes it easier to use. While I think it's our duty in the library to
make our stuff easy to use, I figure it's not our duty to make gcc's own
features easy to use on its own. Most likely, client code which wants to
make use of this should define its own:
#define _cleanup_(function) __attribute__((cleanup(function)))
Or similar, to make the gcc feature easier to use.
Making this logic public has the benefit that we can remove three header
files whose only purpose was to define these functions internally.
See #2008.
2015-11-27 19:13:45 +01:00
_cleanup_ ( sd_bus_error_free ) sd_bus_error error = SD_BUS_ERROR_NULL ;
2015-04-11 18:44:51 +02:00
Inhibitor * offending = NULL ;
int r ;
assert ( manager ) ;
if ( manager - > action_what = = 0 | | manager - > action_job )
return 0 ;
if ( manager_is_inhibited ( manager , manager - > action_what , INHIBIT_DELAY , NULL , false , false , 0 , & offending ) ) {
_cleanup_free_ char * comm = NULL , * u = NULL ;
2015-06-08 22:58:50 +02:00
if ( ! timeout )
return 0 ;
2015-04-11 18:44:51 +02:00
( void ) get_process_comm ( offending - > pid , & comm ) ;
u = uid_to_name ( offending - > uid ) ;
log_notice ( " Delay lock is active (UID " UID_FMT " /%s, PID " PID_FMT " /%s) but inhibitor timeout is reached. " ,
offending - > uid , strna ( u ) ,
offending - > pid , strna ( comm ) ) ;
}
/* Actually do the operation */
r = execute_shutdown_or_sleep ( manager , manager - > action_what , manager - > action_unit , & error ) ;
if ( r < 0 ) {
2017-08-24 11:33:24 +02:00
log_warning ( " Error during inhibitor-delayed operation (already returned success to client): %s " ,
bus_error_message ( & error , r ) ) ;
2015-04-11 18:44:51 +02:00
manager - > action_unit = NULL ;
manager - > action_what = 0 ;
2015-06-08 22:58:50 +02:00
return r ;
2015-04-11 18:44:51 +02:00
}
2015-06-08 22:58:50 +02:00
return 1 ;
}
static int manager_inhibit_timeout_handler (
sd_event_source * s ,
uint64_t usec ,
void * userdata ) {
Manager * manager = userdata ;
int r ;
assert ( manager ) ;
assert ( manager - > inhibit_timeout_source = = s ) ;
r = manager_dispatch_delayed ( manager , true ) ;
return ( r < 0 ) ? r : 0 ;
2015-04-11 18:44:51 +02:00
}
2013-01-25 06:30:23 +01:00
static int delay_shutdown_or_sleep (
Manager * m ,
InhibitWhat w ,
const char * unit_name ) {
2012-05-05 00:34:48 +02:00
2015-04-11 18:44:51 +02:00
int r ;
usec_t timeout_val ;
2012-05-05 00:34:48 +02:00
assert ( m ) ;
2012-05-08 19:02:25 +02:00
assert ( w > = 0 ) ;
assert ( w < _INHIBIT_WHAT_MAX ) ;
2013-01-25 06:30:23 +01:00
assert ( unit_name ) ;
2012-05-05 00:34:48 +02:00
2015-04-11 18:44:51 +02:00
timeout_val = now ( CLOCK_MONOTONIC ) + m - > inhibit_delay_max ;
if ( m - > inhibit_timeout_source ) {
r = sd_event_source_set_time ( m - > inhibit_timeout_source , timeout_val ) ;
if ( r < 0 )
2015-04-24 21:44:51 +02:00
return log_error_errno ( r , " sd_event_source_set_time() failed : % m " ) ;
2015-04-11 18:44:51 +02:00
r = sd_event_source_set_enabled ( m - > inhibit_timeout_source , SD_EVENT_ONESHOT ) ;
if ( r < 0 )
2015-04-24 21:44:51 +02:00
return log_error_errno ( r , " sd_event_source_set_enabled() failed : % m " ) ;
2015-04-11 18:44:51 +02:00
} else {
r = sd_event_add_time ( m - > event , & m - > inhibit_timeout_source , CLOCK_MONOTONIC ,
timeout_val , 0 , manager_inhibit_timeout_handler , m ) ;
if ( r < 0 )
return r ;
}
2013-01-25 06:30:23 +01:00
m - > action_unit = unit_name ;
m - > action_what = w ;
2012-05-08 19:02:25 +02:00
return 0 ;
}
2012-05-30 15:01:51 +02:00
int bus_manager_shutdown_or_sleep_now_or_later (
Manager * m ,
const char * unit_name ,
InhibitWhat w ,
2013-11-05 01:10:21 +01:00
sd_bus_error * error ) {
2012-05-30 15:01:51 +02:00
bool delayed ;
int r ;
assert ( m ) ;
assert ( unit_name ) ;
2017-08-24 16:21:21 +02:00
assert ( w > 0 ) ;
2012-05-30 15:01:51 +02:00
assert ( w < = _INHIBIT_WHAT_MAX ) ;
2013-01-24 04:56:44 +01:00
assert ( ! m - > action_job ) ;
2012-05-30 15:01:51 +02:00
2013-01-25 06:30:23 +01:00
/* Tell everybody to prepare for shutdown/sleep */
send_prepare_for ( m , w , true ) ;
2012-05-30 15:01:51 +02:00
delayed =
m - > inhibit_delay_max > 0 & &
2013-11-27 02:38:06 +01:00
manager_is_inhibited ( m , w , INHIBIT_DELAY , NULL , false , false , 0 , NULL ) ;
2012-05-30 15:01:51 +02:00
if ( delayed )
/* Shutdown is delayed, keep in mind what we
* want to do , and start a timeout */
r = delay_shutdown_or_sleep ( m , w , unit_name ) ;
2013-01-25 06:30:23 +01:00
else
2012-05-30 15:01:51 +02:00
/* Shutdown is not delayed, execute it
* immediately */
2013-01-25 06:30:23 +01:00
r = execute_shutdown_or_sleep ( m , w , unit_name , error ) ;
2012-05-30 15:01:51 +02:00
return r ;
}
2015-04-20 15:19:26 +02:00
static int verify_shutdown_creds (
2012-05-08 19:02:25 +02:00
Manager * m ,
2013-11-05 01:10:21 +01:00
sd_bus_message * message ,
2012-05-08 19:02:25 +02:00
InhibitWhat w ,
2015-04-20 15:19:26 +02:00
bool interactive ,
2012-05-08 19:02:25 +02:00
const char * action ,
const char * action_multiple_sessions ,
const char * action_ignore_inhibit ,
2013-11-21 19:34:37 +01:00
sd_bus_error * error ) {
2012-05-08 19:02:25 +02:00
tree-wide: expose "p"-suffix unref calls in public APIs to make gcc cleanup easy
GLIB has recently started to officially support the gcc cleanup
attribute in its public API, hence let's do the same for our APIs.
With this patch we'll define an xyz_unrefp() call for each public
xyz_unref() call, to make it easy to use inside a
__attribute__((cleanup())) expression. Then, all code is ported over to
make use of this.
The new calls are also documented in the man pages, with examples how to
use them (well, I only added docs where the _unref() call itself already
had docs, and the examples, only cover sd_bus_unrefp() and
sd_event_unrefp()).
This also renames sd_lldp_free() to sd_lldp_unref(), since that's how we
tend to call our destructors these days.
Note that this defines no public macro that wraps gcc's attribute and
makes it easier to use. While I think it's our duty in the library to
make our stuff easy to use, I figure it's not our duty to make gcc's own
features easy to use on its own. Most likely, client code which wants to
make use of this should define its own:
#define _cleanup_(function) __attribute__((cleanup(function)))
Or similar, to make the gcc feature easier to use.
Making this logic public has the benefit that we can remove three header
files whose only purpose was to define these functions internally.
See #2008.
2015-11-27 19:13:45 +01:00
_cleanup_ ( sd_bus_creds_unrefp ) sd_bus_creds * creds = NULL ;
2012-05-30 15:01:51 +02:00
bool multiple_sessions , blocked ;
2013-11-05 01:10:21 +01:00
uid_t uid ;
2015-04-20 15:19:26 +02:00
int r ;
2012-05-08 19:02:25 +02:00
assert ( m ) ;
assert ( message ) ;
assert ( w > = 0 ) ;
assert ( w < = _INHIBIT_WHAT_MAX ) ;
2012-10-28 00:49:04 +02:00
bus: use EUID over UID and fix unix-creds
Whenever a process performs an action on an object, the kernel uses the
EUID of the process to do permission checks and to apply on any newly
created objects. The UID of a process is only used if someone *ELSE* acts
on the process. That is, the UID of a process defines who owns the
process, the EUID defines what privileges are used by this process when
performing an action.
Process limits, on the other hand, are always applied to the real UID, not
the effective UID. This is, because a process has a user object linked,
which always corresponds to its UID. A process never has a user object
linked for its EUID. Thus, accounting (and limits) is always done on the
real UID.
This commit fixes all sd-bus users to use the EUID when performing
privilege checks and alike. Furthermore, it fixes unix-creds to be parsed
as EUID, not UID (as the kernel always takes the EUID on UDS). Anyone
using UID (eg., to do user-accounting) has to fall back to the EUID as UDS
does not transmit the UID.
2015-01-18 13:55:55 +01:00
r = sd_bus_query_sender_creds ( message , SD_BUS_CREDS_EUID , & creds ) ;
2013-11-28 17:50:02 +01:00
if ( r < 0 )
return r ;
bus: use EUID over UID and fix unix-creds
Whenever a process performs an action on an object, the kernel uses the
EUID of the process to do permission checks and to apply on any newly
created objects. The UID of a process is only used if someone *ELSE* acts
on the process. That is, the UID of a process defines who owns the
process, the EUID defines what privileges are used by this process when
performing an action.
Process limits, on the other hand, are always applied to the real UID, not
the effective UID. This is, because a process has a user object linked,
which always corresponds to its UID. A process never has a user object
linked for its EUID. Thus, accounting (and limits) is always done on the
real UID.
This commit fixes all sd-bus users to use the EUID when performing
privilege checks and alike. Furthermore, it fixes unix-creds to be parsed
as EUID, not UID (as the kernel always takes the EUID on UDS). Anyone
using UID (eg., to do user-accounting) has to fall back to the EUID as UDS
does not transmit the UID.
2015-01-18 13:55:55 +01:00
r = sd_bus_creds_get_euid ( creds , & uid ) ;
2013-11-05 01:10:21 +01:00
if ( r < 0 )
2013-11-21 19:34:37 +01:00
return r ;
2012-09-21 11:57:48 +02:00
2013-11-05 01:10:21 +01:00
r = have_multiple_sessions ( m , uid ) ;
2012-05-08 19:02:25 +02:00
if ( r < 0 )
2013-11-21 19:34:37 +01:00
return r ;
2012-05-08 19:02:25 +02:00
multiple_sessions = r > 0 ;
2013-11-27 02:38:06 +01:00
blocked = manager_is_inhibited ( m , w , INHIBIT_BLOCK , NULL , false , true , uid , NULL ) ;
2012-05-08 19:02:25 +02:00
2015-04-20 15:19:26 +02:00
if ( multiple_sessions & & action_multiple_sessions ) {
2015-09-05 16:07:16 +02:00
r = bus_verify_polkit_async ( message , CAP_SYS_BOOT , action_multiple_sessions , NULL , interactive , UID_INVALID , & m - > polkit_registry , error ) ;
2012-05-08 19:02:25 +02:00
if ( r < 0 )
2013-11-21 19:34:37 +01:00
return r ;
2014-03-10 13:25:15 +01:00
if ( r = = 0 )
return 1 ; /* No authorization for now, but the async polkit stuff will call us again when it has it */
2012-05-08 19:02:25 +02:00
}
2015-04-20 15:19:26 +02:00
if ( blocked & & action_ignore_inhibit ) {
2015-09-05 16:07:16 +02:00
r = bus_verify_polkit_async ( message , CAP_SYS_BOOT , action_ignore_inhibit , NULL , interactive , UID_INVALID , & m - > polkit_registry , error ) ;
2012-05-08 19:02:25 +02:00
if ( r < 0 )
2013-11-21 19:34:37 +01:00
return r ;
2014-03-10 13:25:15 +01:00
if ( r = = 0 )
return 1 ; /* No authorization for now, but the async polkit stuff will call us again when it has it */
2012-05-08 19:02:25 +02:00
}
2015-04-20 15:19:26 +02:00
if ( ! multiple_sessions & & ! blocked & & action ) {
2015-09-05 16:07:16 +02:00
r = bus_verify_polkit_async ( message , CAP_SYS_BOOT , action , NULL , interactive , UID_INVALID , & m - > polkit_registry , error ) ;
2012-05-08 19:02:25 +02:00
if ( r < 0 )
2013-11-21 19:34:37 +01:00
return r ;
2014-03-10 13:25:15 +01:00
if ( r = = 0 )
return 1 ; /* No authorization for now, but the async polkit stuff will call us again when it has it */
2012-05-08 19:02:25 +02:00
}
2015-04-20 15:19:26 +02:00
return 0 ;
}
static int method_do_shutdown_or_sleep (
Manager * m ,
sd_bus_message * message ,
const char * unit_name ,
InhibitWhat w ,
const char * action ,
const char * action_multiple_sessions ,
const char * action_ignore_inhibit ,
const char * sleep_verb ,
sd_bus_error * error ) {
int interactive , r ;
assert ( m ) ;
assert ( message ) ;
assert ( unit_name ) ;
assert ( w > = 0 ) ;
assert ( w < = _INHIBIT_WHAT_MAX ) ;
r = sd_bus_message_read ( message , " b " , & interactive ) ;
if ( r < 0 )
return r ;
/* Don't allow multiple jobs being executed at the same time */
if ( m - > action_what )
return sd_bus_error_setf ( error , BUS_ERROR_OPERATION_IN_PROGRESS , " There's already a shutdown or sleep operation in progress " ) ;
if ( sleep_verb ) {
r = can_sleep ( sleep_verb ) ;
if ( r < 0 )
return r ;
if ( r = = 0 )
return sd_bus_error_setf ( error , BUS_ERROR_SLEEP_VERB_NOT_SUPPORTED , " Sleep verb not supported " ) ;
}
r = verify_shutdown_creds ( m , message , w , interactive , action , action_multiple_sessions ,
action_ignore_inhibit , error ) ;
if ( r ! = 0 )
return r ;
2013-11-21 19:34:37 +01:00
r = bus_manager_shutdown_or_sleep_now_or_later ( m , unit_name , w , error ) ;
2012-05-08 19:02:25 +02:00
if ( r < 0 )
2013-11-21 19:34:37 +01:00
return r ;
2012-05-08 19:02:25 +02:00
2013-11-21 01:51:16 +01:00
return sd_bus_reply_method_return ( message , NULL ) ;
2012-05-05 00:34:48 +02:00
}
2015-04-29 18:35:10 +02:00
static int method_poweroff ( sd_bus_message * message , void * userdata , sd_bus_error * error ) {
2011-05-26 02:21:16 +02:00
Manager * m = userdata ;
2013-11-05 01:10:21 +01:00
return method_do_shutdown_or_sleep (
m , message ,
SPECIAL_POWEROFF_TARGET ,
INHIBIT_SHUTDOWN ,
" org.freedesktop.login1.power-off " ,
" org.freedesktop.login1.power-off-multiple-sessions " ,
" org.freedesktop.login1.power-off-ignore-inhibit " ,
NULL ,
2013-11-21 19:34:37 +01:00
error ) ;
2013-11-05 01:10:21 +01:00
}
2011-07-09 02:58:05 +02:00
2015-04-29 18:35:10 +02:00
static int method_reboot ( sd_bus_message * message , void * userdata , sd_bus_error * error ) {
2013-11-05 01:10:21 +01:00
Manager * m = userdata ;
2011-07-09 02:58:05 +02:00
2013-11-05 01:10:21 +01:00
return method_do_shutdown_or_sleep (
m , message ,
SPECIAL_REBOOT_TARGET ,
INHIBIT_SHUTDOWN ,
" org.freedesktop.login1.reboot " ,
" org.freedesktop.login1.reboot-multiple-sessions " ,
" org.freedesktop.login1.reboot-ignore-inhibit " ,
NULL ,
2013-11-21 19:34:37 +01:00
error ) ;
2013-11-05 01:10:21 +01:00
}
2011-07-09 02:58:05 +02:00
logind: add Halt() and CanHalt() APIs
This adds new method calls Halt() and CanHalt() to the logind bus APIs.
They aren't overly useful (as the whole concept of halting isn't really
too useful), however they clean up one major asymmetry: currently, using
the "shutdown" legacy commands it is possibly to enqueue a "halt"
operation through logind, while logind officially doesn't actually
support this. Moreover, the path through "shutdown" currently ultimately
fails, since the referenced "halt" action isn't actually defined in
PolicyKit.
Finally, the current logic results in an unexpected asymmetry in
systemctl: "systemctl poweroff", "systemctl reboot" are currently
asynchronous (due to the logind involvement) while "systemctl halt"
isnt. Let's clean this up, and make all three APIs implemented by
logind natively, and all three hence asynchronous in "systemctl".
Moreover, let's add the missing PK action.
Fixes: #6957
2017-10-02 16:03:55 +02:00
static int method_halt ( sd_bus_message * message , void * userdata , sd_bus_error * error ) {
Manager * m = userdata ;
return method_do_shutdown_or_sleep (
m , message ,
SPECIAL_HALT_TARGET ,
INHIBIT_SHUTDOWN ,
" org.freedesktop.login1.halt " ,
" org.freedesktop.login1.halt-multiple-sessions " ,
" org.freedesktop.login1.halt-ignore-inhibit " ,
NULL ,
error ) ;
}
2015-04-29 18:35:10 +02:00
static int method_suspend ( sd_bus_message * message , void * userdata , sd_bus_error * error ) {
2013-11-05 01:10:21 +01:00
Manager * m = userdata ;
2011-07-09 02:58:05 +02:00
2013-11-05 01:10:21 +01:00
return method_do_shutdown_or_sleep (
m , message ,
SPECIAL_SUSPEND_TARGET ,
INHIBIT_SLEEP ,
" org.freedesktop.login1.suspend " ,
" org.freedesktop.login1.suspend-multiple-sessions " ,
" org.freedesktop.login1.suspend-ignore-inhibit " ,
" suspend " ,
2013-11-21 19:34:37 +01:00
error ) ;
2013-11-05 01:10:21 +01:00
}
2011-07-09 02:58:05 +02:00
2017-10-02 16:08:49 +02:00
static int method_hibernate ( sd_bus_message * message , void * userdata , sd_bus_error * error ) {
Manager * m = userdata ;
return method_do_shutdown_or_sleep (
m , message ,
SPECIAL_HIBERNATE_TARGET ,
INHIBIT_SLEEP ,
" org.freedesktop.login1.hibernate " ,
" org.freedesktop.login1.hibernate-multiple-sessions " ,
" org.freedesktop.login1.hibernate-ignore-inhibit " ,
" hibernate " ,
error ) ;
}
static int method_hybrid_sleep ( sd_bus_message * message , void * userdata , sd_bus_error * error ) {
Manager * m = userdata ;
return method_do_shutdown_or_sleep (
m , message ,
SPECIAL_HYBRID_SLEEP_TARGET ,
INHIBIT_SLEEP ,
" org.freedesktop.login1.hibernate " ,
" org.freedesktop.login1.hibernate-multiple-sessions " ,
" org.freedesktop.login1.hibernate-ignore-inhibit " ,
" hybrid-sleep " ,
error ) ;
}
2015-04-23 17:11:28 +02:00
static int nologin_timeout_handler (
sd_event_source * s ,
uint64_t usec ,
void * userdata ) {
Manager * m = userdata ;
int r ;
log_info ( " Creating /run/nologin, blocking further logins... " ) ;
2015-12-04 22:29:38 +01:00
r = write_string_file_atomic_label ( " /run/nologin " , " System is going down. " ) ;
2015-04-23 17:11:28 +02:00
if ( r < 0 )
log_error_errno ( r , " Failed to create /run/nologin: %m " ) ;
else
m - > unlink_nologin = true ;
return 0 ;
}
static int update_schedule_file ( Manager * m ) {
2015-09-05 20:24:08 +02:00
_cleanup_free_ char * temp_path = NULL ;
2015-04-23 17:11:28 +02:00
_cleanup_fclose_ FILE * f = NULL ;
2015-09-05 20:24:08 +02:00
int r ;
2015-04-23 17:11:28 +02:00
assert ( m ) ;
2017-10-06 09:03:33 +02:00
r = mkdir_safe_label ( " /run/systemd/shutdown " , 0755 , 0 , 0 , false ) ;
2015-04-23 17:11:28 +02:00
if ( r < 0 )
return log_error_errno ( r , " Failed to create shutdown subdirectory: %m " ) ;
r = fopen_temporary ( " /run/systemd/shutdown/scheduled " , & f , & temp_path ) ;
if ( r < 0 )
return log_error_errno ( r , " Failed to save information about scheduled shutdowns: %m " ) ;
( void ) fchmod ( fileno ( f ) , 0644 ) ;
fprintf ( f ,
" USEC= " USEC_FMT " \n "
" WARN_WALL=%i \n "
" MODE=%s \n " ,
m - > scheduled_shutdown_timeout ,
m - > enable_wall_messages ,
m - > scheduled_shutdown_type ) ;
2015-09-05 20:24:08 +02:00
if ( ! isempty ( m - > wall_message ) ) {
_cleanup_free_ char * t ;
t = cescape ( m - > wall_message ) ;
if ( ! t ) {
r = - ENOMEM ;
goto fail ;
}
2015-04-23 17:11:28 +02:00
fprintf ( f , " WALL_MESSAGE=%s \n " , t ) ;
2015-09-05 20:24:08 +02:00
}
2015-04-23 17:11:28 +02:00
2015-07-29 20:31:07 +02:00
r = fflush_and_check ( f ) ;
if ( r < 0 )
goto fail ;
2015-04-23 17:11:28 +02:00
2015-07-29 20:31:07 +02:00
if ( rename ( temp_path , " /run/systemd/shutdown/scheduled " ) < 0 ) {
2015-04-23 17:11:28 +02:00
r = - errno ;
2015-07-29 20:31:07 +02:00
goto fail ;
2015-04-23 17:11:28 +02:00
}
2015-07-29 20:31:07 +02:00
return 0 ;
fail :
( void ) unlink ( temp_path ) ;
( void ) unlink ( " /run/systemd/shutdown/scheduled " ) ;
return log_error_errno ( r , " Failed to write information about scheduled shutdowns: %m " ) ;
2015-04-23 17:11:28 +02:00
}
logind: respect "delay" inhibitors in scheduled shutdowns
There is no justification not to wait an extra (default) 5 seconds, for
a more graceful shutdown of user programs. Again, you don't get to ignore
delay inhibitors for unscheduled shutdowns, short of
`systemctl poweroff -f`.
It is simplest if we move the test for `m->shutdown_dry_run` into
manager_scheduled_shutdown_handler().
However we need to not add such delays during a "dry run". Otherwise, we
would still have to be considered "in progress" for some seconds after our
admin has seen the final wall message. If they go to `poweroff`, we would
have blocked them with a misleading error message. Note this `poweroff`
will still process delay inhibitors as needed. If the admin planned to
use a more forceful method... eh. It's their responsibility to assess
whether that's safe.
There is an argument that the alternative behaviour could be used (racily!)
to kludge around them not being able to shutdown to "single user mode". If
we cared about that case, we would have easily preserved non-racy support
for it in `shutdown`.
Additionally, though I think this code does read more easily by reducing
inconsistencies, we didn't come up with any use case for delay inhibitors
v.s. shutdown.[1] The SIGTERM v.s. SIGKILL delay is more general, and we
allow a whole 90 seconds for it, not just 5. So I don't think keeping this
approach bears a risk of significant damage.
[1] https://www.freedesktop.org/wiki/Software/systemd/inhibit/
2017-08-21 18:28:35 +02:00
static void reset_scheduled_shutdown ( Manager * m ) {
logind: add Halt() and CanHalt() APIs
This adds new method calls Halt() and CanHalt() to the logind bus APIs.
They aren't overly useful (as the whole concept of halting isn't really
too useful), however they clean up one major asymmetry: currently, using
the "shutdown" legacy commands it is possibly to enqueue a "halt"
operation through logind, while logind officially doesn't actually
support this. Moreover, the path through "shutdown" currently ultimately
fails, since the referenced "halt" action isn't actually defined in
PolicyKit.
Finally, the current logic results in an unexpected asymmetry in
systemctl: "systemctl poweroff", "systemctl reboot" are currently
asynchronous (due to the logind involvement) while "systemctl halt"
isnt. Let's clean this up, and make all three APIs implemented by
logind natively, and all three hence asynchronous in "systemctl".
Moreover, let's add the missing PK action.
Fixes: #6957
2017-10-02 16:03:55 +02:00
assert ( m ) ;
logind: respect "delay" inhibitors in scheduled shutdowns
There is no justification not to wait an extra (default) 5 seconds, for
a more graceful shutdown of user programs. Again, you don't get to ignore
delay inhibitors for unscheduled shutdowns, short of
`systemctl poweroff -f`.
It is simplest if we move the test for `m->shutdown_dry_run` into
manager_scheduled_shutdown_handler().
However we need to not add such delays during a "dry run". Otherwise, we
would still have to be considered "in progress" for some seconds after our
admin has seen the final wall message. If they go to `poweroff`, we would
have blocked them with a misleading error message. Note this `poweroff`
will still process delay inhibitors as needed. If the admin planned to
use a more forceful method... eh. It's their responsibility to assess
whether that's safe.
There is an argument that the alternative behaviour could be used (racily!)
to kludge around them not being able to shutdown to "single user mode". If
we cared about that case, we would have easily preserved non-racy support
for it in `shutdown`.
Additionally, though I think this code does read more easily by reducing
inconsistencies, we didn't come up with any use case for delay inhibitors
v.s. shutdown.[1] The SIGTERM v.s. SIGKILL delay is more general, and we
allow a whole 90 seconds for it, not just 5. So I don't think keeping this
approach bears a risk of significant damage.
[1] https://www.freedesktop.org/wiki/Software/systemd/inhibit/
2017-08-21 18:28:35 +02:00
m - > scheduled_shutdown_timeout_source = sd_event_source_unref ( m - > scheduled_shutdown_timeout_source ) ;
m - > wall_message_timeout_source = sd_event_source_unref ( m - > wall_message_timeout_source ) ;
m - > nologin_timeout_source = sd_event_source_unref ( m - > nologin_timeout_source ) ;
logind: add Halt() and CanHalt() APIs
This adds new method calls Halt() and CanHalt() to the logind bus APIs.
They aren't overly useful (as the whole concept of halting isn't really
too useful), however they clean up one major asymmetry: currently, using
the "shutdown" legacy commands it is possibly to enqueue a "halt"
operation through logind, while logind officially doesn't actually
support this. Moreover, the path through "shutdown" currently ultimately
fails, since the referenced "halt" action isn't actually defined in
PolicyKit.
Finally, the current logic results in an unexpected asymmetry in
systemctl: "systemctl poweroff", "systemctl reboot" are currently
asynchronous (due to the logind involvement) while "systemctl halt"
isnt. Let's clean this up, and make all three APIs implemented by
logind natively, and all three hence asynchronous in "systemctl".
Moreover, let's add the missing PK action.
Fixes: #6957
2017-10-02 16:03:55 +02:00
logind: respect "delay" inhibitors in scheduled shutdowns
There is no justification not to wait an extra (default) 5 seconds, for
a more graceful shutdown of user programs. Again, you don't get to ignore
delay inhibitors for unscheduled shutdowns, short of
`systemctl poweroff -f`.
It is simplest if we move the test for `m->shutdown_dry_run` into
manager_scheduled_shutdown_handler().
However we need to not add such delays during a "dry run". Otherwise, we
would still have to be considered "in progress" for some seconds after our
admin has seen the final wall message. If they go to `poweroff`, we would
have blocked them with a misleading error message. Note this `poweroff`
will still process delay inhibitors as needed. If the admin planned to
use a more forceful method... eh. It's their responsibility to assess
whether that's safe.
There is an argument that the alternative behaviour could be used (racily!)
to kludge around them not being able to shutdown to "single user mode". If
we cared about that case, we would have easily preserved non-racy support
for it in `shutdown`.
Additionally, though I think this code does read more easily by reducing
inconsistencies, we didn't come up with any use case for delay inhibitors
v.s. shutdown.[1] The SIGTERM v.s. SIGKILL delay is more general, and we
allow a whole 90 seconds for it, not just 5. So I don't think keeping this
approach bears a risk of significant damage.
[1] https://www.freedesktop.org/wiki/Software/systemd/inhibit/
2017-08-21 18:28:35 +02:00
m - > scheduled_shutdown_type = mfree ( m - > scheduled_shutdown_type ) ;
m - > scheduled_shutdown_timeout = 0 ;
m - > shutdown_dry_run = false ;
if ( m - > unlink_nologin ) {
( void ) unlink ( " /run/nologin " ) ;
m - > unlink_nologin = false ;
}
logind: add Halt() and CanHalt() APIs
This adds new method calls Halt() and CanHalt() to the logind bus APIs.
They aren't overly useful (as the whole concept of halting isn't really
too useful), however they clean up one major asymmetry: currently, using
the "shutdown" legacy commands it is possibly to enqueue a "halt"
operation through logind, while logind officially doesn't actually
support this. Moreover, the path through "shutdown" currently ultimately
fails, since the referenced "halt" action isn't actually defined in
PolicyKit.
Finally, the current logic results in an unexpected asymmetry in
systemctl: "systemctl poweroff", "systemctl reboot" are currently
asynchronous (due to the logind involvement) while "systemctl halt"
isnt. Let's clean this up, and make all three APIs implemented by
logind natively, and all three hence asynchronous in "systemctl".
Moreover, let's add the missing PK action.
Fixes: #6957
2017-10-02 16:03:55 +02:00
logind: respect "delay" inhibitors in scheduled shutdowns
There is no justification not to wait an extra (default) 5 seconds, for
a more graceful shutdown of user programs. Again, you don't get to ignore
delay inhibitors for unscheduled shutdowns, short of
`systemctl poweroff -f`.
It is simplest if we move the test for `m->shutdown_dry_run` into
manager_scheduled_shutdown_handler().
However we need to not add such delays during a "dry run". Otherwise, we
would still have to be considered "in progress" for some seconds after our
admin has seen the final wall message. If they go to `poweroff`, we would
have blocked them with a misleading error message. Note this `poweroff`
will still process delay inhibitors as needed. If the admin planned to
use a more forceful method... eh. It's their responsibility to assess
whether that's safe.
There is an argument that the alternative behaviour could be used (racily!)
to kludge around them not being able to shutdown to "single user mode". If
we cared about that case, we would have easily preserved non-racy support
for it in `shutdown`.
Additionally, though I think this code does read more easily by reducing
inconsistencies, we didn't come up with any use case for delay inhibitors
v.s. shutdown.[1] The SIGTERM v.s. SIGKILL delay is more general, and we
allow a whole 90 seconds for it, not just 5. So I don't think keeping this
approach bears a risk of significant damage.
[1] https://www.freedesktop.org/wiki/Software/systemd/inhibit/
2017-08-21 18:28:35 +02:00
( void ) unlink ( " /run/systemd/shutdown/scheduled " ) ;
}
2015-04-20 15:27:15 +02:00
static int manager_scheduled_shutdown_handler (
sd_event_source * s ,
uint64_t usec ,
void * userdata ) {
tree-wide: expose "p"-suffix unref calls in public APIs to make gcc cleanup easy
GLIB has recently started to officially support the gcc cleanup
attribute in its public API, hence let's do the same for our APIs.
With this patch we'll define an xyz_unrefp() call for each public
xyz_unref() call, to make it easy to use inside a
__attribute__((cleanup())) expression. Then, all code is ported over to
make use of this.
The new calls are also documented in the man pages, with examples how to
use them (well, I only added docs where the _unref() call itself already
had docs, and the examples, only cover sd_bus_unrefp() and
sd_event_unrefp()).
This also renames sd_lldp_free() to sd_lldp_unref(), since that's how we
tend to call our destructors these days.
Note that this defines no public macro that wraps gcc's attribute and
makes it easier to use. While I think it's our duty in the library to
make our stuff easy to use, I figure it's not our duty to make gcc's own
features easy to use on its own. Most likely, client code which wants to
make use of this should define its own:
#define _cleanup_(function) __attribute__((cleanup(function)))
Or similar, to make the gcc feature easier to use.
Making this logic public has the benefit that we can remove three header
files whose only purpose was to define these functions internally.
See #2008.
2015-11-27 19:13:45 +01:00
_cleanup_ ( sd_bus_error_free ) sd_bus_error error = SD_BUS_ERROR_NULL ;
2015-04-20 15:27:15 +02:00
Manager * m = userdata ;
const char * target ;
int r ;
assert ( m ) ;
if ( isempty ( m - > scheduled_shutdown_type ) )
return 0 ;
logind: add Halt() and CanHalt() APIs
This adds new method calls Halt() and CanHalt() to the logind bus APIs.
They aren't overly useful (as the whole concept of halting isn't really
too useful), however they clean up one major asymmetry: currently, using
the "shutdown" legacy commands it is possibly to enqueue a "halt"
operation through logind, while logind officially doesn't actually
support this. Moreover, the path through "shutdown" currently ultimately
fails, since the referenced "halt" action isn't actually defined in
PolicyKit.
Finally, the current logic results in an unexpected asymmetry in
systemctl: "systemctl poweroff", "systemctl reboot" are currently
asynchronous (due to the logind involvement) while "systemctl halt"
isnt. Let's clean this up, and make all three APIs implemented by
logind natively, and all three hence asynchronous in "systemctl".
Moreover, let's add the missing PK action.
Fixes: #6957
2017-10-02 16:03:55 +02:00
if ( streq ( m - > scheduled_shutdown_type , " poweroff " ) )
2015-04-20 15:27:15 +02:00
target = SPECIAL_POWEROFF_TARGET ;
logind: add Halt() and CanHalt() APIs
This adds new method calls Halt() and CanHalt() to the logind bus APIs.
They aren't overly useful (as the whole concept of halting isn't really
too useful), however they clean up one major asymmetry: currently, using
the "shutdown" legacy commands it is possibly to enqueue a "halt"
operation through logind, while logind officially doesn't actually
support this. Moreover, the path through "shutdown" currently ultimately
fails, since the referenced "halt" action isn't actually defined in
PolicyKit.
Finally, the current logic results in an unexpected asymmetry in
systemctl: "systemctl poweroff", "systemctl reboot" are currently
asynchronous (due to the logind involvement) while "systemctl halt"
isnt. Let's clean this up, and make all three APIs implemented by
logind natively, and all three hence asynchronous in "systemctl".
Moreover, let's add the missing PK action.
Fixes: #6957
2017-10-02 16:03:55 +02:00
else if ( streq ( m - > scheduled_shutdown_type , " reboot " ) )
2015-04-20 15:27:15 +02:00
target = SPECIAL_REBOOT_TARGET ;
logind: add Halt() and CanHalt() APIs
This adds new method calls Halt() and CanHalt() to the logind bus APIs.
They aren't overly useful (as the whole concept of halting isn't really
too useful), however they clean up one major asymmetry: currently, using
the "shutdown" legacy commands it is possibly to enqueue a "halt"
operation through logind, while logind officially doesn't actually
support this. Moreover, the path through "shutdown" currently ultimately
fails, since the referenced "halt" action isn't actually defined in
PolicyKit.
Finally, the current logic results in an unexpected asymmetry in
systemctl: "systemctl poweroff", "systemctl reboot" are currently
asynchronous (due to the logind involvement) while "systemctl halt"
isnt. Let's clean this up, and make all three APIs implemented by
logind natively, and all three hence asynchronous in "systemctl".
Moreover, let's add the missing PK action.
Fixes: #6957
2017-10-02 16:03:55 +02:00
else if ( streq ( m - > scheduled_shutdown_type , " halt " ) )
target = SPECIAL_HALT_TARGET ;
else
assert_not_reached ( " unexpected shutdown type " ) ;
2015-04-20 15:27:15 +02:00
2017-08-21 12:49:25 +02:00
/* Don't allow multiple jobs being executed at the same time */
if ( m - > action_what ) {
2017-08-24 11:33:24 +02:00
r = - EALREADY ;
2017-08-21 12:49:25 +02:00
log_error ( " Scheduled shutdown to %s failed: shutdown or sleep operation already in progress " , target ) ;
2017-08-24 11:33:24 +02:00
goto error ;
2017-08-21 12:49:25 +02:00
}
logind: respect "delay" inhibitors in scheduled shutdowns
There is no justification not to wait an extra (default) 5 seconds, for
a more graceful shutdown of user programs. Again, you don't get to ignore
delay inhibitors for unscheduled shutdowns, short of
`systemctl poweroff -f`.
It is simplest if we move the test for `m->shutdown_dry_run` into
manager_scheduled_shutdown_handler().
However we need to not add such delays during a "dry run". Otherwise, we
would still have to be considered "in progress" for some seconds after our
admin has seen the final wall message. If they go to `poweroff`, we would
have blocked them with a misleading error message. Note this `poweroff`
will still process delay inhibitors as needed. If the admin planned to
use a more forceful method... eh. It's their responsibility to assess
whether that's safe.
There is an argument that the alternative behaviour could be used (racily!)
to kludge around them not being able to shutdown to "single user mode". If
we cared about that case, we would have easily preserved non-racy support
for it in `shutdown`.
Additionally, though I think this code does read more easily by reducing
inconsistencies, we didn't come up with any use case for delay inhibitors
v.s. shutdown.[1] The SIGTERM v.s. SIGKILL delay is more general, and we
allow a whole 90 seconds for it, not just 5. So I don't think keeping this
approach bears a risk of significant damage.
[1] https://www.freedesktop.org/wiki/Software/systemd/inhibit/
2017-08-21 18:28:35 +02:00
if ( m - > shutdown_dry_run ) {
/* We do not process delay inhibitors here. Otherwise, we
* would have to be considered " in progress " ( like the check
* above ) for some seconds after our admin has seen the final
* wall message . */
bus_manager_log_shutdown ( m , target ) ;
log_info ( " Running in dry run, suppressing action. " ) ;
reset_scheduled_shutdown ( m ) ;
return 0 ;
}
r = bus_manager_shutdown_or_sleep_now_or_later ( m , target , INHIBIT_SHUTDOWN , & error ) ;
2017-08-24 11:33:24 +02:00
if ( r < 0 ) {
log_error_errno ( r , " Scheduled shutdown to %s failed: %m " , target ) ;
goto error ;
}
2015-04-20 15:27:15 +02:00
return 0 ;
2017-08-24 11:33:24 +02:00
error :
reset_scheduled_shutdown ( m ) ;
return r ;
2015-04-20 15:27:15 +02:00
}
2015-04-29 18:35:10 +02:00
static int method_schedule_shutdown ( sd_bus_message * message , void * userdata , sd_bus_error * error ) {
2015-04-20 15:27:15 +02:00
Manager * m = userdata ;
tree-wide: expose "p"-suffix unref calls in public APIs to make gcc cleanup easy
GLIB has recently started to officially support the gcc cleanup
attribute in its public API, hence let's do the same for our APIs.
With this patch we'll define an xyz_unrefp() call for each public
xyz_unref() call, to make it easy to use inside a
__attribute__((cleanup())) expression. Then, all code is ported over to
make use of this.
The new calls are also documented in the man pages, with examples how to
use them (well, I only added docs where the _unref() call itself already
had docs, and the examples, only cover sd_bus_unrefp() and
sd_event_unrefp()).
This also renames sd_lldp_free() to sd_lldp_unref(), since that's how we
tend to call our destructors these days.
Note that this defines no public macro that wraps gcc's attribute and
makes it easier to use. While I think it's our duty in the library to
make our stuff easy to use, I figure it's not our duty to make gcc's own
features easy to use on its own. Most likely, client code which wants to
make use of this should define its own:
#define _cleanup_(function) __attribute__((cleanup(function)))
Or similar, to make the gcc feature easier to use.
Making this logic public has the benefit that we can remove three header
files whose only purpose was to define these functions internally.
See #2008.
2015-11-27 19:13:45 +01:00
_cleanup_ ( sd_bus_creds_unrefp ) sd_bus_creds * creds = NULL ;
2015-04-20 15:27:15 +02:00
const char * action_multiple_sessions = NULL ;
const char * action_ignore_inhibit = NULL ;
const char * action = NULL ;
uint64_t elapse ;
char * type ;
int r ;
2017-10-02 16:09:24 +02:00
bool dry_run = false ;
2015-04-20 15:27:15 +02:00
assert ( m ) ;
assert ( message ) ;
r = sd_bus_message_read ( message , " st " , & type , & elapse ) ;
if ( r < 0 )
return r ;
2015-09-09 17:05:03 +02:00
if ( startswith ( type , " dry- " ) ) {
type + = 4 ;
2017-10-02 16:09:24 +02:00
dry_run = true ;
2015-09-09 17:05:03 +02:00
}
logind: add Halt() and CanHalt() APIs
This adds new method calls Halt() and CanHalt() to the logind bus APIs.
They aren't overly useful (as the whole concept of halting isn't really
too useful), however they clean up one major asymmetry: currently, using
the "shutdown" legacy commands it is possibly to enqueue a "halt"
operation through logind, while logind officially doesn't actually
support this. Moreover, the path through "shutdown" currently ultimately
fails, since the referenced "halt" action isn't actually defined in
PolicyKit.
Finally, the current logic results in an unexpected asymmetry in
systemctl: "systemctl poweroff", "systemctl reboot" are currently
asynchronous (due to the logind involvement) while "systemctl halt"
isnt. Let's clean this up, and make all three APIs implemented by
logind natively, and all three hence asynchronous in "systemctl".
Moreover, let's add the missing PK action.
Fixes: #6957
2017-10-02 16:03:55 +02:00
if ( streq ( type , " poweroff " ) ) {
action = " org.freedesktop.login1.power-off " ;
action_multiple_sessions = " org.freedesktop.login1.power-off-multiple-sessions " ;
action_ignore_inhibit = " org.freedesktop.login1.power-off-ignore-inhibit " ;
} else if ( streq ( type , " reboot " ) ) {
2015-04-20 15:27:15 +02:00
action = " org.freedesktop.login1.reboot " ;
action_multiple_sessions = " org.freedesktop.login1.reboot-multiple-sessions " ;
action_ignore_inhibit = " org.freedesktop.login1.reboot-ignore-inhibit " ;
} else if ( streq ( type , " halt " ) ) {
action = " org.freedesktop.login1.halt " ;
action_multiple_sessions = " org.freedesktop.login1.halt-multiple-sessions " ;
action_ignore_inhibit = " org.freedesktop.login1.halt-ignore-inhibit " ;
} else
return sd_bus_error_setf ( error , SD_BUS_ERROR_INVALID_ARGS , " Unsupported shutdown type " ) ;
r = verify_shutdown_creds ( m , message , INHIBIT_SHUTDOWN , false ,
action , action_multiple_sessions , action_ignore_inhibit , error ) ;
if ( r ! = 0 )
return r ;
if ( m - > scheduled_shutdown_timeout_source ) {
r = sd_event_source_set_time ( m - > scheduled_shutdown_timeout_source , elapse ) ;
if ( r < 0 )
2015-04-24 21:44:51 +02:00
return log_error_errno ( r , " sd_event_source_set_time() failed : % m " ) ;
2015-04-20 15:27:15 +02:00
r = sd_event_source_set_enabled ( m - > scheduled_shutdown_timeout_source , SD_EVENT_ONESHOT ) ;
if ( r < 0 )
2015-04-24 21:44:51 +02:00
return log_error_errno ( r , " sd_event_source_set_enabled() failed : % m " ) ;
2015-04-20 15:27:15 +02:00
} else {
r = sd_event_add_time ( m - > event , & m - > scheduled_shutdown_timeout_source ,
CLOCK_REALTIME , elapse , 0 , manager_scheduled_shutdown_handler , m ) ;
if ( r < 0 )
2015-04-24 21:44:51 +02:00
return log_error_errno ( r , " sd_event_add_time() failed : % m " ) ;
2015-04-20 15:27:15 +02:00
}
r = free_and_strdup ( & m - > scheduled_shutdown_type , type ) ;
if ( r < 0 ) {
m - > scheduled_shutdown_timeout_source = sd_event_source_unref ( m - > scheduled_shutdown_timeout_source ) ;
return log_oom ( ) ;
}
2017-10-02 16:09:24 +02:00
m - > shutdown_dry_run = dry_run ;
2015-04-23 17:11:28 +02:00
if ( m - > nologin_timeout_source ) {
r = sd_event_source_set_time ( m - > nologin_timeout_source , elapse ) ;
if ( r < 0 )
2015-04-24 21:44:51 +02:00
return log_error_errno ( r , " sd_event_source_set_time() failed : % m " ) ;
2015-04-23 17:11:28 +02:00
r = sd_event_source_set_enabled ( m - > nologin_timeout_source , SD_EVENT_ONESHOT ) ;
if ( r < 0 )
2015-04-24 21:44:51 +02:00
return log_error_errno ( r , " sd_event_source_set_enabled() failed : % m " ) ;
2015-04-23 17:11:28 +02:00
} else {
r = sd_event_add_time ( m - > event , & m - > nologin_timeout_source ,
CLOCK_REALTIME , elapse - 5 * USEC_PER_MINUTE , 0 , nologin_timeout_handler , m ) ;
if ( r < 0 )
2015-04-24 21:44:51 +02:00
return log_error_errno ( r , " sd_event_add_time() failed : % m " ) ;
2015-04-23 17:11:28 +02:00
}
2015-04-20 15:27:15 +02:00
m - > scheduled_shutdown_timeout = elapse ;
2015-04-22 17:20:42 +02:00
r = sd_bus_query_sender_creds ( message , SD_BUS_CREDS_AUGMENT | SD_BUS_CREDS_TTY | SD_BUS_CREDS_UID , & creds ) ;
if ( r > = 0 ) {
2016-01-12 23:27:33 +01:00
const char * tty = NULL ;
2015-04-22 17:20:42 +02:00
( void ) sd_bus_creds_get_uid ( creds , & m - > scheduled_shutdown_uid ) ;
( void ) sd_bus_creds_get_tty ( creds , & tty ) ;
r = free_and_strdup ( & m - > scheduled_shutdown_tty , tty ) ;
if ( r < 0 ) {
m - > scheduled_shutdown_timeout_source = sd_event_source_unref ( m - > scheduled_shutdown_timeout_source ) ;
return log_oom ( ) ;
}
}
r = manager_setup_wall_message_timer ( m ) ;
if ( r < 0 )
return r ;
2017-08-22 14:54:21 +02:00
r = update_schedule_file ( m ) ;
if ( r < 0 )
return r ;
2015-04-23 17:11:28 +02:00
2015-04-20 15:27:15 +02:00
return sd_bus_reply_method_return ( message , NULL ) ;
}
2015-04-29 18:35:10 +02:00
static int method_cancel_scheduled_shutdown ( sd_bus_message * message , void * userdata , sd_bus_error * error ) {
2015-04-20 15:27:15 +02:00
Manager * m = userdata ;
bool cancelled ;
assert ( m ) ;
assert ( message ) ;
cancelled = m - > scheduled_shutdown_type ! = NULL ;
2015-09-09 17:05:03 +02:00
reset_scheduled_shutdown ( m ) ;
2015-05-26 18:56:40 +02:00
2015-04-22 17:20:42 +02:00
if ( cancelled ) {
tree-wide: expose "p"-suffix unref calls in public APIs to make gcc cleanup easy
GLIB has recently started to officially support the gcc cleanup
attribute in its public API, hence let's do the same for our APIs.
With this patch we'll define an xyz_unrefp() call for each public
xyz_unref() call, to make it easy to use inside a
__attribute__((cleanup())) expression. Then, all code is ported over to
make use of this.
The new calls are also documented in the man pages, with examples how to
use them (well, I only added docs where the _unref() call itself already
had docs, and the examples, only cover sd_bus_unrefp() and
sd_event_unrefp()).
This also renames sd_lldp_free() to sd_lldp_unref(), since that's how we
tend to call our destructors these days.
Note that this defines no public macro that wraps gcc's attribute and
makes it easier to use. While I think it's our duty in the library to
make our stuff easy to use, I figure it's not our duty to make gcc's own
features easy to use on its own. Most likely, client code which wants to
make use of this should define its own:
#define _cleanup_(function) __attribute__((cleanup(function)))
Or similar, to make the gcc feature easier to use.
Making this logic public has the benefit that we can remove three header
files whose only purpose was to define these functions internally.
See #2008.
2015-11-27 19:13:45 +01:00
_cleanup_ ( sd_bus_creds_unrefp ) sd_bus_creds * creds = NULL ;
2015-04-22 17:20:42 +02:00
const char * tty = NULL ;
uid_t uid = 0 ;
int r ;
r = sd_bus_query_sender_creds ( message , SD_BUS_CREDS_AUGMENT | SD_BUS_CREDS_TTY | SD_BUS_CREDS_UID , & creds ) ;
if ( r > = 0 ) {
( void ) sd_bus_creds_get_uid ( creds , & uid ) ;
( void ) sd_bus_creds_get_tty ( creds , & tty ) ;
}
utmp_wall ( " The system shutdown has been cancelled " ,
2015-10-25 23:20:05 +01:00
uid_to_name ( uid ) , tty , logind_wall_tty_filter , m ) ;
2015-04-22 17:20:42 +02:00
}
2015-04-20 15:27:15 +02:00
return sd_bus_reply_method_return ( message , " b " , cancelled ) ;
}
2013-11-05 01:10:21 +01:00
static int method_can_shutdown_or_sleep (
Manager * m ,
sd_bus_message * message ,
InhibitWhat w ,
const char * action ,
const char * action_multiple_sessions ,
const char * action_ignore_inhibit ,
2013-11-21 19:34:37 +01:00
const char * sleep_verb ,
sd_bus_error * error ) {
2011-07-13 19:58:35 +02:00
tree-wide: expose "p"-suffix unref calls in public APIs to make gcc cleanup easy
GLIB has recently started to officially support the gcc cleanup
attribute in its public API, hence let's do the same for our APIs.
With this patch we'll define an xyz_unrefp() call for each public
xyz_unref() call, to make it easy to use inside a
__attribute__((cleanup())) expression. Then, all code is ported over to
make use of this.
The new calls are also documented in the man pages, with examples how to
use them (well, I only added docs where the _unref() call itself already
had docs, and the examples, only cover sd_bus_unrefp() and
sd_event_unrefp()).
This also renames sd_lldp_free() to sd_lldp_unref(), since that's how we
tend to call our destructors these days.
Note that this defines no public macro that wraps gcc's attribute and
makes it easier to use. While I think it's our duty in the library to
make our stuff easy to use, I figure it's not our duty to make gcc's own
features easy to use on its own. Most likely, client code which wants to
make use of this should define its own:
#define _cleanup_(function) __attribute__((cleanup(function)))
Or similar, to make the gcc feature easier to use.
Making this logic public has the benefit that we can remove three header
files whose only purpose was to define these functions internally.
See #2008.
2015-11-27 19:13:45 +01:00
_cleanup_ ( sd_bus_creds_unrefp ) sd_bus_creds * creds = NULL ;
2013-11-05 01:10:21 +01:00
bool multiple_sessions , challenge , blocked ;
const char * result = NULL ;
uid_t uid ;
int r ;
2011-07-13 19:58:35 +02:00
2013-11-05 01:10:21 +01:00
assert ( m ) ;
assert ( message ) ;
assert ( w > = 0 ) ;
assert ( w < = _INHIBIT_WHAT_MAX ) ;
assert ( action ) ;
assert ( action_multiple_sessions ) ;
assert ( action_ignore_inhibit ) ;
2011-07-13 19:58:35 +02:00
2013-11-05 01:10:21 +01:00
if ( sleep_verb ) {
r = can_sleep ( sleep_verb ) ;
2011-07-13 19:58:35 +02:00
if ( r < 0 )
2013-11-21 19:34:37 +01:00
return r ;
2013-11-05 01:10:21 +01:00
if ( r = = 0 )
2013-11-21 01:51:16 +01:00
return sd_bus_reply_method_return ( message , " s " , " na " ) ;
2013-11-05 01:10:21 +01:00
}
2011-07-13 19:58:35 +02:00
bus: use EUID over UID and fix unix-creds
Whenever a process performs an action on an object, the kernel uses the
EUID of the process to do permission checks and to apply on any newly
created objects. The UID of a process is only used if someone *ELSE* acts
on the process. That is, the UID of a process defines who owns the
process, the EUID defines what privileges are used by this process when
performing an action.
Process limits, on the other hand, are always applied to the real UID, not
the effective UID. This is, because a process has a user object linked,
which always corresponds to its UID. A process never has a user object
linked for its EUID. Thus, accounting (and limits) is always done on the
real UID.
This commit fixes all sd-bus users to use the EUID when performing
privilege checks and alike. Furthermore, it fixes unix-creds to be parsed
as EUID, not UID (as the kernel always takes the EUID on UDS). Anyone
using UID (eg., to do user-accounting) has to fall back to the EUID as UDS
does not transmit the UID.
2015-01-18 13:55:55 +01:00
r = sd_bus_query_sender_creds ( message , SD_BUS_CREDS_EUID , & creds ) ;
2013-11-28 17:50:02 +01:00
if ( r < 0 )
return r ;
bus: use EUID over UID and fix unix-creds
Whenever a process performs an action on an object, the kernel uses the
EUID of the process to do permission checks and to apply on any newly
created objects. The UID of a process is only used if someone *ELSE* acts
on the process. That is, the UID of a process defines who owns the
process, the EUID defines what privileges are used by this process when
performing an action.
Process limits, on the other hand, are always applied to the real UID, not
the effective UID. This is, because a process has a user object linked,
which always corresponds to its UID. A process never has a user object
linked for its EUID. Thus, accounting (and limits) is always done on the
real UID.
This commit fixes all sd-bus users to use the EUID when performing
privilege checks and alike. Furthermore, it fixes unix-creds to be parsed
as EUID, not UID (as the kernel always takes the EUID on UDS). Anyone
using UID (eg., to do user-accounting) has to fall back to the EUID as UDS
does not transmit the UID.
2015-01-18 13:55:55 +01:00
r = sd_bus_creds_get_euid ( creds , & uid ) ;
2013-11-05 01:10:21 +01:00
if ( r < 0 )
2013-11-21 19:34:37 +01:00
return r ;
2011-07-13 19:58:35 +02:00
2013-11-05 01:10:21 +01:00
r = have_multiple_sessions ( m , uid ) ;
if ( r < 0 )
2013-11-21 19:34:37 +01:00
return r ;
2011-07-13 19:58:35 +02:00
2013-11-05 01:10:21 +01:00
multiple_sessions = r > 0 ;
2013-11-27 02:38:06 +01:00
blocked = manager_is_inhibited ( m , w , INHIBIT_BLOCK , NULL , false , true , uid , NULL ) ;
2011-07-13 19:58:35 +02:00
2013-11-05 01:10:21 +01:00
if ( multiple_sessions ) {
2015-09-05 16:07:16 +02:00
r = bus_test_polkit ( message , CAP_SYS_BOOT , action_multiple_sessions , NULL , UID_INVALID , & challenge , error ) ;
2011-07-13 19:58:35 +02:00
if ( r < 0 )
2013-11-21 19:34:37 +01:00
return r ;
2011-06-21 19:20:05 +02:00
2013-11-05 01:10:21 +01:00
if ( r > 0 )
result = " yes " ;
else if ( challenge )
result = " challenge " ;
else
result = " no " ;
}
2011-06-21 19:20:05 +02:00
2013-11-05 01:10:21 +01:00
if ( blocked ) {
2015-09-05 16:07:16 +02:00
r = bus_test_polkit ( message , CAP_SYS_BOOT , action_ignore_inhibit , NULL , UID_INVALID , & challenge , error ) ;
2011-06-21 19:20:05 +02:00
if ( r < 0 )
2013-11-21 19:34:37 +01:00
return r ;
2011-06-21 19:20:05 +02:00
2013-11-05 01:10:21 +01:00
if ( r > 0 & & ! result )
result = " yes " ;
else if ( challenge & & ( ! result | | streq ( result , " yes " ) ) )
result = " challenge " ;
else
result = " no " ;
}
2011-06-21 19:20:05 +02:00
2013-11-05 01:10:21 +01:00
if ( ! multiple_sessions & & ! blocked ) {
/* If neither inhibit nor multiple sessions
* apply then just check the normal policy */
2011-06-21 19:20:05 +02:00
2015-09-05 16:07:16 +02:00
r = bus_test_polkit ( message , CAP_SYS_BOOT , action , NULL , UID_INVALID , & challenge , error ) ;
2011-06-21 19:20:05 +02:00
if ( r < 0 )
2013-11-21 19:34:37 +01:00
return r ;
2011-06-21 19:20:05 +02:00
2013-11-05 01:10:21 +01:00
if ( r > 0 )
result = " yes " ;
else if ( challenge )
result = " challenge " ;
else
result = " no " ;
}
2011-06-21 19:20:05 +02:00
2013-11-21 01:51:16 +01:00
return sd_bus_reply_method_return ( message , " s " , result ) ;
2013-11-05 01:10:21 +01:00
}
2011-06-21 19:20:05 +02:00
2015-04-29 18:35:10 +02:00
static int method_can_poweroff ( sd_bus_message * message , void * userdata , sd_bus_error * error ) {
2013-11-05 01:10:21 +01:00
Manager * m = userdata ;
2011-06-21 19:20:05 +02:00
2013-11-05 01:10:21 +01:00
return method_can_shutdown_or_sleep (
m , message ,
INHIBIT_SHUTDOWN ,
" org.freedesktop.login1.power-off " ,
" org.freedesktop.login1.power-off-multiple-sessions " ,
" org.freedesktop.login1.power-off-ignore-inhibit " ,
2013-11-21 19:34:37 +01:00
NULL ,
error ) ;
2013-11-05 01:10:21 +01:00
}
2011-06-21 19:20:05 +02:00
2015-04-29 18:35:10 +02:00
static int method_can_reboot ( sd_bus_message * message , void * userdata , sd_bus_error * error ) {
2013-11-05 01:10:21 +01:00
Manager * m = userdata ;
2011-06-21 19:20:05 +02:00
2013-11-05 01:10:21 +01:00
return method_can_shutdown_or_sleep (
m , message ,
INHIBIT_SHUTDOWN ,
" org.freedesktop.login1.reboot " ,
" org.freedesktop.login1.reboot-multiple-sessions " ,
" org.freedesktop.login1.reboot-ignore-inhibit " ,
2013-11-21 19:34:37 +01:00
NULL ,
error ) ;
2013-11-05 01:10:21 +01:00
}
2011-06-21 19:20:05 +02:00
logind: add Halt() and CanHalt() APIs
This adds new method calls Halt() and CanHalt() to the logind bus APIs.
They aren't overly useful (as the whole concept of halting isn't really
too useful), however they clean up one major asymmetry: currently, using
the "shutdown" legacy commands it is possibly to enqueue a "halt"
operation through logind, while logind officially doesn't actually
support this. Moreover, the path through "shutdown" currently ultimately
fails, since the referenced "halt" action isn't actually defined in
PolicyKit.
Finally, the current logic results in an unexpected asymmetry in
systemctl: "systemctl poweroff", "systemctl reboot" are currently
asynchronous (due to the logind involvement) while "systemctl halt"
isnt. Let's clean this up, and make all three APIs implemented by
logind natively, and all three hence asynchronous in "systemctl".
Moreover, let's add the missing PK action.
Fixes: #6957
2017-10-02 16:03:55 +02:00
static int method_can_halt ( sd_bus_message * message , void * userdata , sd_bus_error * error ) {
Manager * m = userdata ;
return method_can_shutdown_or_sleep (
m , message ,
INHIBIT_SHUTDOWN ,
" org.freedesktop.login1.halt " ,
" org.freedesktop.login1.halt-multiple-sessions " ,
" org.freedesktop.login1.halt-ignore-inhibit " ,
NULL ,
error ) ;
}
2015-04-29 18:35:10 +02:00
static int method_can_suspend ( sd_bus_message * message , void * userdata , sd_bus_error * error ) {
2013-11-05 01:10:21 +01:00
Manager * m = userdata ;
2011-06-28 03:52:22 +02:00
2013-11-05 01:10:21 +01:00
return method_can_shutdown_or_sleep (
m , message ,
INHIBIT_SLEEP ,
" org.freedesktop.login1.suspend " ,
" org.freedesktop.login1.suspend-multiple-sessions " ,
" org.freedesktop.login1.suspend-ignore-inhibit " ,
2013-11-21 19:34:37 +01:00
" suspend " ,
error ) ;
2013-11-05 01:10:21 +01:00
}
2011-06-28 03:52:22 +02:00
2015-04-29 18:35:10 +02:00
static int method_can_hibernate ( sd_bus_message * message , void * userdata , sd_bus_error * error ) {
2013-11-05 01:10:21 +01:00
Manager * m = userdata ;
2012-01-27 20:48:28 +01:00
2013-11-05 01:10:21 +01:00
return method_can_shutdown_or_sleep (
m , message ,
INHIBIT_SLEEP ,
" org.freedesktop.login1.hibernate " ,
" org.freedesktop.login1.hibernate-multiple-sessions " ,
" org.freedesktop.login1.hibernate-ignore-inhibit " ,
2013-11-21 19:34:37 +01:00
" hibernate " ,
error ) ;
2013-11-05 01:10:21 +01:00
}
2011-06-28 03:52:22 +02:00
2015-04-29 18:35:10 +02:00
static int method_can_hybrid_sleep ( sd_bus_message * message , void * userdata , sd_bus_error * error ) {
2013-11-05 01:10:21 +01:00
Manager * m = userdata ;
2011-06-28 03:52:22 +02:00
2013-11-05 01:10:21 +01:00
return method_can_shutdown_or_sleep (
m , message ,
INHIBIT_SLEEP ,
" org.freedesktop.login1.hibernate " ,
" org.freedesktop.login1.hibernate-multiple-sessions " ,
" org.freedesktop.login1.hibernate-ignore-inhibit " ,
2013-11-21 19:34:37 +01:00
" hybrid-sleep " ,
error ) ;
2013-11-05 01:10:21 +01:00
}
2011-06-28 18:16:32 +02:00
2015-04-03 18:03:06 +02:00
static int property_get_reboot_to_firmware_setup (
sd_bus * bus ,
const char * path ,
const char * interface ,
const char * property ,
sd_bus_message * reply ,
void * userdata ,
sd_bus_error * error ) {
int r ;
assert ( bus ) ;
assert ( reply ) ;
assert ( userdata ) ;
r = efi_get_reboot_to_firmware ( ) ;
if ( r < 0 & & r ! = - EOPNOTSUPP )
return r ;
return sd_bus_message_append ( reply , " b " , r > 0 ) ;
}
static int method_set_reboot_to_firmware_setup (
sd_bus_message * message ,
void * userdata ,
sd_bus_error * error ) {
int b , r ;
Manager * m = userdata ;
assert ( message ) ;
assert ( m ) ;
2015-04-07 21:08:07 +02:00
r = sd_bus_message_read ( message , " b " , & b ) ;
2015-04-03 18:03:06 +02:00
if ( r < 0 )
return r ;
r = bus_verify_polkit_async ( message ,
CAP_SYS_ADMIN ,
" org.freedesktop.login1.set-reboot-to-firmware-setup " ,
2015-09-05 16:07:16 +02:00
NULL ,
2015-04-07 21:08:07 +02:00
false ,
2015-04-03 18:03:06 +02:00
UID_INVALID ,
& m - > polkit_registry ,
error ) ;
if ( r < 0 )
return r ;
if ( r = = 0 )
return 1 ; /* No authorization for now, but the async polkit stuff will call us again when it has it */
r = efi_set_reboot_to_firmware ( b ) ;
if ( r < 0 )
return r ;
return sd_bus_reply_method_return ( message , NULL ) ;
}
static int method_can_reboot_to_firmware_setup (
sd_bus_message * message ,
void * userdata ,
sd_bus_error * error ) {
int r ;
bool challenge ;
const char * result ;
Manager * m = userdata ;
assert ( message ) ;
assert ( m ) ;
r = efi_reboot_to_firmware_supported ( ) ;
if ( r = = - EOPNOTSUPP )
return sd_bus_reply_method_return ( message , " s " , " na " ) ;
else if ( r < 0 )
return r ;
r = bus_test_polkit ( message ,
CAP_SYS_ADMIN ,
" org.freedesktop.login1.set-reboot-to-firmware-setup " ,
2015-09-05 16:07:16 +02:00
NULL ,
2015-04-03 18:03:06 +02:00
UID_INVALID ,
& challenge ,
error ) ;
if ( r < 0 )
return r ;
if ( r > 0 )
result = " yes " ;
else if ( challenge )
result = " challenge " ;
else
result = " no " ;
return sd_bus_reply_method_return ( message , " s " , result ) ;
}
2015-08-24 14:54:22 +02:00
static int method_set_wall_message (
sd_bus_message * message ,
void * userdata ,
sd_bus_error * error ) {
int r ;
Manager * m = userdata ;
char * wall_message ;
2015-09-04 10:35:46 +02:00
int enable_wall_messages ;
2015-08-24 14:54:22 +02:00
assert ( message ) ;
assert ( m ) ;
r = sd_bus_message_read ( message , " sb " , & wall_message , & enable_wall_messages ) ;
if ( r < 0 )
return r ;
r = bus_verify_polkit_async ( message ,
CAP_SYS_ADMIN ,
" org.freedesktop.login1.set-wall-message " ,
2015-09-05 16:07:16 +02:00
NULL ,
2015-08-24 14:54:22 +02:00
false ,
UID_INVALID ,
& m - > polkit_registry ,
error ) ;
if ( r < 0 )
return r ;
if ( r = = 0 )
return 1 ; /* Will call us back */
2017-01-28 03:50:06 +01:00
r = free_and_strdup ( & m - > wall_message , empty_to_null ( wall_message ) ) ;
if ( r < 0 )
return log_oom ( ) ;
2015-09-04 10:34:47 +02:00
2015-08-24 14:54:22 +02:00
m - > enable_wall_messages = enable_wall_messages ;
return sd_bus_reply_method_return ( message , NULL ) ;
}
2015-04-29 18:35:10 +02:00
static int method_inhibit ( sd_bus_message * message , void * userdata , sd_bus_error * error ) {
tree-wide: expose "p"-suffix unref calls in public APIs to make gcc cleanup easy
GLIB has recently started to officially support the gcc cleanup
attribute in its public API, hence let's do the same for our APIs.
With this patch we'll define an xyz_unrefp() call for each public
xyz_unref() call, to make it easy to use inside a
__attribute__((cleanup())) expression. Then, all code is ported over to
make use of this.
The new calls are also documented in the man pages, with examples how to
use them (well, I only added docs where the _unref() call itself already
had docs, and the examples, only cover sd_bus_unrefp() and
sd_event_unrefp()).
This also renames sd_lldp_free() to sd_lldp_unref(), since that's how we
tend to call our destructors these days.
Note that this defines no public macro that wraps gcc's attribute and
makes it easier to use. While I think it's our duty in the library to
make our stuff easy to use, I figure it's not our duty to make gcc's own
features easy to use on its own. Most likely, client code which wants to
make use of this should define its own:
#define _cleanup_(function) __attribute__((cleanup(function)))
Or similar, to make the gcc feature easier to use.
Making this logic public has the benefit that we can remove three header
files whose only purpose was to define these functions internally.
See #2008.
2015-11-27 19:13:45 +01:00
_cleanup_ ( sd_bus_creds_unrefp ) sd_bus_creds * creds = NULL ;
2013-11-05 01:10:21 +01:00
const char * who , * why , * what , * mode ;
_cleanup_free_ char * id = NULL ;
_cleanup_close_ int fifo_fd = - 1 ;
Manager * m = userdata ;
Inhibitor * i = NULL ;
InhibitMode mm ;
InhibitWhat w ;
pid_t pid ;
uid_t uid ;
int r ;
2011-06-28 03:52:22 +02:00
2013-11-05 01:10:21 +01:00
assert ( message ) ;
assert ( m ) ;
2011-06-28 18:16:32 +02:00
2013-11-05 01:10:21 +01:00
r = sd_bus_message_read ( message , " ssss " , & what , & who , & why , & mode ) ;
if ( r < 0 )
2013-11-21 19:34:37 +01:00
return r ;
2011-06-28 18:16:32 +02:00
2013-11-05 01:10:21 +01:00
w = inhibit_what_from_string ( what ) ;
if ( w < = 0 )
2013-11-21 19:34:37 +01:00
return sd_bus_error_setf ( error , SD_BUS_ERROR_INVALID_ARGS , " Invalid what specification %s " , what ) ;
2011-06-28 18:16:32 +02:00
2013-11-05 01:10:21 +01:00
mm = inhibit_mode_from_string ( mode ) ;
if ( mm < 0 )
2013-11-21 19:34:37 +01:00
return sd_bus_error_setf ( error , SD_BUS_ERROR_INVALID_ARGS , " Invalid mode specification %s " , mode ) ;
2011-06-28 03:52:22 +02:00
2013-11-05 01:10:21 +01:00
/* Delay is only supported for shutdown/sleep */
if ( mm = = INHIBIT_DELAY & & ( w & ~ ( INHIBIT_SHUTDOWN | INHIBIT_SLEEP ) ) )
2013-11-21 19:34:37 +01:00
return sd_bus_error_setf ( error , SD_BUS_ERROR_INVALID_ARGS , " Delay inhibitors only supported for shutdown and sleep " ) ;
2011-06-28 18:16:32 +02:00
2013-11-05 01:10:21 +01:00
/* Don't allow taking delay locks while we are already
* executing the operation . We shouldn ' t create the impression
* that the lock was successful if the machine is about to go
* down / suspend any moment . */
if ( m - > action_what & w )
2013-11-21 19:34:37 +01:00
return sd_bus_error_setf ( error , BUS_ERROR_OPERATION_IN_PROGRESS , " The operation inhibition has been requested for is already running " ) ;
2013-11-05 01:10:21 +01:00
2015-02-18 12:55:25 +01:00
r = bus_verify_polkit_async (
message ,
CAP_SYS_BOOT ,
w = = INHIBIT_SHUTDOWN ? ( mm = = INHIBIT_BLOCK ? " org.freedesktop.login1.inhibit-block-shutdown " : " org.freedesktop.login1.inhibit-delay-shutdown " ) :
w = = INHIBIT_SLEEP ? ( mm = = INHIBIT_BLOCK ? " org.freedesktop.login1.inhibit-block-sleep " : " org.freedesktop.login1.inhibit-delay-sleep " ) :
w = = INHIBIT_IDLE ? " org.freedesktop.login1.inhibit-block-idle " :
w = = INHIBIT_HANDLE_POWER_KEY ? " org.freedesktop.login1.inhibit-handle-power-key " :
w = = INHIBIT_HANDLE_SUSPEND_KEY ? " org.freedesktop.login1.inhibit-handle-suspend-key " :
w = = INHIBIT_HANDLE_HIBERNATE_KEY ? " org.freedesktop.login1.inhibit-handle-hibernate-key " :
" org.freedesktop.login1.inhibit-handle-lid-switch " ,
2015-09-05 16:07:16 +02:00
NULL ,
2015-02-18 12:55:25 +01:00
false ,
UID_INVALID ,
& m - > polkit_registry ,
error ) ;
2013-11-05 01:10:21 +01:00
if ( r < 0 )
2013-11-21 19:34:37 +01:00
return r ;
2013-11-05 01:10:21 +01:00
if ( r = = 0 )
return 1 ; /* No authorization for now, but the async polkit stuff will call us again when it has it */
2011-06-28 03:52:22 +02:00
bus: use EUID over UID and fix unix-creds
Whenever a process performs an action on an object, the kernel uses the
EUID of the process to do permission checks and to apply on any newly
created objects. The UID of a process is only used if someone *ELSE* acts
on the process. That is, the UID of a process defines who owns the
process, the EUID defines what privileges are used by this process when
performing an action.
Process limits, on the other hand, are always applied to the real UID, not
the effective UID. This is, because a process has a user object linked,
which always corresponds to its UID. A process never has a user object
linked for its EUID. Thus, accounting (and limits) is always done on the
real UID.
This commit fixes all sd-bus users to use the EUID when performing
privilege checks and alike. Furthermore, it fixes unix-creds to be parsed
as EUID, not UID (as the kernel always takes the EUID on UDS). Anyone
using UID (eg., to do user-accounting) has to fall back to the EUID as UDS
does not transmit the UID.
2015-01-18 13:55:55 +01:00
r = sd_bus_query_sender_creds ( message , SD_BUS_CREDS_EUID | SD_BUS_CREDS_PID , & creds ) ;
2013-11-28 17:50:02 +01:00
if ( r < 0 )
return r ;
bus: use EUID over UID and fix unix-creds
Whenever a process performs an action on an object, the kernel uses the
EUID of the process to do permission checks and to apply on any newly
created objects. The UID of a process is only used if someone *ELSE* acts
on the process. That is, the UID of a process defines who owns the
process, the EUID defines what privileges are used by this process when
performing an action.
Process limits, on the other hand, are always applied to the real UID, not
the effective UID. This is, because a process has a user object linked,
which always corresponds to its UID. A process never has a user object
linked for its EUID. Thus, accounting (and limits) is always done on the
real UID.
This commit fixes all sd-bus users to use the EUID when performing
privilege checks and alike. Furthermore, it fixes unix-creds to be parsed
as EUID, not UID (as the kernel always takes the EUID on UDS). Anyone
using UID (eg., to do user-accounting) has to fall back to the EUID as UDS
does not transmit the UID.
2015-01-18 13:55:55 +01:00
r = sd_bus_creds_get_euid ( creds , & uid ) ;
2013-11-05 01:10:21 +01:00
if ( r < 0 )
2013-11-21 19:34:37 +01:00
return r ;
2011-06-28 03:52:22 +02:00
2013-11-28 17:50:02 +01:00
r = sd_bus_creds_get_pid ( creds , & pid ) ;
2013-11-05 01:10:21 +01:00
if ( r < 0 )
2013-11-21 19:34:37 +01:00
return r ;
2011-06-28 20:50:43 +02:00
2016-05-04 19:40:05 +02:00
if ( hashmap_size ( m - > inhibitors ) > = m - > inhibitors_max )
return sd_bus_error_setf ( error , SD_BUS_ERROR_LIMITS_EXCEEDED , " Maximum number of inhibitors (% " PRIu64 " ) reached , refusing further inhibitors . " , m->inhibitors_max) ;
2013-11-05 01:10:21 +01:00
do {
2015-07-31 19:56:38 +02:00
id = mfree ( id ) ;
2011-06-28 20:50:43 +02:00
2013-11-05 01:10:21 +01:00
if ( asprintf ( & id , " %lu " , + + m - > inhibit_counter ) < 0 )
2013-11-21 19:34:37 +01:00
return - ENOMEM ;
2011-06-28 20:50:43 +02:00
2013-11-05 01:10:21 +01:00
} while ( hashmap_get ( m - > inhibitors , id ) ) ;
2011-06-28 20:50:43 +02:00
2013-11-05 01:10:21 +01:00
r = manager_add_inhibitor ( m , id , & i ) ;
if ( r < 0 )
2013-11-21 19:34:37 +01:00
return r ;
2011-06-28 20:50:43 +02:00
2013-11-05 01:10:21 +01:00
i - > what = w ;
i - > mode = mm ;
i - > pid = pid ;
i - > uid = uid ;
i - > why = strdup ( why ) ;
i - > who = strdup ( who ) ;
2011-06-28 03:52:22 +02:00
2013-11-05 01:10:21 +01:00
if ( ! i - > why | | ! i - > who ) {
2013-11-21 19:34:37 +01:00
r = - ENOMEM ;
2013-11-05 01:10:21 +01:00
goto fail ;
}
2011-06-29 03:12:23 +02:00
2013-11-05 01:10:21 +01:00
fifo_fd = inhibitor_create_fifo ( i ) ;
if ( fifo_fd < 0 ) {
2013-11-21 19:34:37 +01:00
r = fifo_fd ;
2013-11-05 01:10:21 +01:00
goto fail ;
}
2011-06-29 03:12:23 +02:00
2013-11-05 01:10:21 +01:00
inhibitor_start ( i ) ;
2011-06-29 03:12:23 +02:00
2013-11-21 01:51:16 +01:00
return sd_bus_reply_method_return ( message , " h " , fifo_fd ) ;
2011-06-29 03:12:23 +02:00
2013-11-05 01:10:21 +01:00
fail :
if ( i )
inhibitor_free ( i ) ;
2012-02-11 00:13:10 +01:00
2013-11-05 01:10:21 +01:00
return r ;
}
2011-05-26 02:21:16 +02:00
2013-11-05 01:10:21 +01:00
const sd_bus_vtable manager_vtable [ ] = {
SD_BUS_VTABLE_START ( 0 ) ,
2015-04-22 17:20:42 +02:00
SD_BUS_WRITABLE_PROPERTY ( " EnableWallMessages " , " b " , NULL , NULL , offsetof ( Manager , enable_wall_messages ) , 0 ) ,
SD_BUS_WRITABLE_PROPERTY ( " WallMessage " , " s " , NULL , NULL , offsetof ( Manager , wall_message ) , 0 ) ,
2013-12-22 02:24:05 +01:00
SD_BUS_PROPERTY ( " NAutoVTs " , " u " , NULL , offsetof ( Manager , n_autovts ) , SD_BUS_VTABLE_PROPERTY_CONST ) ,
SD_BUS_PROPERTY ( " KillOnlyUsers " , " as " , NULL , offsetof ( Manager , kill_only_users ) , SD_BUS_VTABLE_PROPERTY_CONST ) ,
SD_BUS_PROPERTY ( " KillExcludeUsers " , " as " , NULL , offsetof ( Manager , kill_exclude_users ) , SD_BUS_VTABLE_PROPERTY_CONST ) ,
SD_BUS_PROPERTY ( " KillUserProcesses " , " b " , NULL , offsetof ( Manager , kill_user_processes ) , SD_BUS_VTABLE_PROPERTY_CONST ) ,
2015-04-03 18:03:06 +02:00
SD_BUS_PROPERTY ( " RebootToFirmwareSetup " , " b " , property_get_reboot_to_firmware_setup , 0 , SD_BUS_VTABLE_PROPERTY_CONST ) ,
2013-11-05 01:10:21 +01:00
SD_BUS_PROPERTY ( " IdleHint " , " b " , property_get_idle_hint , 0 , SD_BUS_VTABLE_PROPERTY_EMITS_CHANGE ) ,
SD_BUS_PROPERTY ( " IdleSinceHint " , " t " , property_get_idle_since_hint , 0 , SD_BUS_VTABLE_PROPERTY_EMITS_CHANGE ) ,
SD_BUS_PROPERTY ( " IdleSinceHintMonotonic " , " t " , property_get_idle_since_hint , 0 , SD_BUS_VTABLE_PROPERTY_EMITS_CHANGE ) ,
SD_BUS_PROPERTY ( " BlockInhibited " , " s " , property_get_inhibited , 0 , SD_BUS_VTABLE_PROPERTY_EMITS_CHANGE ) ,
SD_BUS_PROPERTY ( " DelayInhibited " , " s " , property_get_inhibited , 0 , SD_BUS_VTABLE_PROPERTY_EMITS_CHANGE ) ,
2013-12-22 02:24:05 +01:00
SD_BUS_PROPERTY ( " InhibitDelayMaxUSec " , " t " , NULL , offsetof ( Manager , inhibit_delay_max ) , SD_BUS_VTABLE_PROPERTY_CONST ) ,
SD_BUS_PROPERTY ( " HandlePowerKey " , " s " , property_get_handle_action , offsetof ( Manager , handle_power_key ) , SD_BUS_VTABLE_PROPERTY_CONST ) ,
SD_BUS_PROPERTY ( " HandleSuspendKey " , " s " , property_get_handle_action , offsetof ( Manager , handle_suspend_key ) , SD_BUS_VTABLE_PROPERTY_CONST ) ,
SD_BUS_PROPERTY ( " HandleHibernateKey " , " s " , property_get_handle_action , offsetof ( Manager , handle_hibernate_key ) , SD_BUS_VTABLE_PROPERTY_CONST ) ,
SD_BUS_PROPERTY ( " HandleLidSwitch " , " s " , property_get_handle_action , offsetof ( Manager , handle_lid_switch ) , SD_BUS_VTABLE_PROPERTY_CONST ) ,
2014-08-26 22:08:02 +02:00
SD_BUS_PROPERTY ( " HandleLidSwitchDocked " , " s " , property_get_handle_action , offsetof ( Manager , handle_lid_switch_docked ) , SD_BUS_VTABLE_PROPERTY_CONST ) ,
2015-03-06 14:37:09 +01:00
SD_BUS_PROPERTY ( " HoldoffTimeoutUSec " , " t " , NULL , offsetof ( Manager , holdoff_timeout_usec ) , SD_BUS_VTABLE_PROPERTY_CONST ) ,
2013-12-22 02:24:05 +01:00
SD_BUS_PROPERTY ( " IdleAction " , " s " , property_get_handle_action , offsetof ( Manager , idle_action ) , SD_BUS_VTABLE_PROPERTY_CONST ) ,
SD_BUS_PROPERTY ( " IdleActionUSec " , " t " , NULL , offsetof ( Manager , idle_action_usec ) , SD_BUS_VTABLE_PROPERTY_CONST ) ,
2013-11-05 01:10:21 +01:00
SD_BUS_PROPERTY ( " PreparingForShutdown " , " b " , property_get_preparing , 0 , 0 ) ,
SD_BUS_PROPERTY ( " PreparingForSleep " , " b " , property_get_preparing , 0 , 0 ) ,
2015-04-20 15:27:15 +02:00
SD_BUS_PROPERTY ( " ScheduledShutdown " , " (st) " , property_get_scheduled_shutdown , 0 , 0 ) ,
2015-06-16 01:02:02 +02:00
SD_BUS_PROPERTY ( " Docked " , " b " , property_get_docked , 0 , 0 ) ,
2016-05-04 19:22:30 +02:00
SD_BUS_PROPERTY ( " RemoveIPC " , " b " , bus_property_get_bool , offsetof ( Manager , remove_ipc ) , SD_BUS_VTABLE_PROPERTY_CONST ) ,
SD_BUS_PROPERTY ( " RuntimeDirectorySize " , " t " , bus_property_get_size , offsetof ( Manager , runtime_dir_size ) , SD_BUS_VTABLE_PROPERTY_CONST ) ,
2016-05-04 19:40:05 +02:00
SD_BUS_PROPERTY ( " InhibitorsMax " , " t " , NULL , offsetof ( Manager , inhibitors_max ) , SD_BUS_VTABLE_PROPERTY_CONST ) ,
SD_BUS_PROPERTY ( " NCurrentInhibitors " , " t " , property_get_current_inhibitors , 0 , 0 ) ,
2016-05-04 18:57:15 +02:00
SD_BUS_PROPERTY ( " SessionsMax " , " t " , NULL , offsetof ( Manager , sessions_max ) , SD_BUS_VTABLE_PROPERTY_CONST ) ,
SD_BUS_PROPERTY ( " NCurrentSessions " , " t " , property_get_current_sessions , 0 , 0 ) ,
2016-05-04 19:22:30 +02:00
SD_BUS_PROPERTY ( " UserTasksMax " , " t " , NULL , offsetof ( Manager , user_tasks_max ) , SD_BUS_VTABLE_PROPERTY_CONST ) ,
2013-11-05 01:10:21 +01:00
2013-12-10 17:41:39 +01:00
SD_BUS_METHOD ( " GetSession " , " s " , " o " , method_get_session , SD_BUS_VTABLE_UNPRIVILEGED ) ,
SD_BUS_METHOD ( " GetSessionByPID " , " u " , " o " , method_get_session_by_pid , SD_BUS_VTABLE_UNPRIVILEGED ) ,
SD_BUS_METHOD ( " GetUser " , " u " , " o " , method_get_user , SD_BUS_VTABLE_UNPRIVILEGED ) ,
SD_BUS_METHOD ( " GetUserByPID " , " u " , " o " , method_get_user_by_pid , SD_BUS_VTABLE_UNPRIVILEGED ) ,
SD_BUS_METHOD ( " GetSeat " , " s " , " o " , method_get_seat , SD_BUS_VTABLE_UNPRIVILEGED ) ,
SD_BUS_METHOD ( " ListSessions " , NULL , " a(susso) " , method_list_sessions , SD_BUS_VTABLE_UNPRIVILEGED ) ,
SD_BUS_METHOD ( " ListUsers " , NULL , " a(uso) " , method_list_users , SD_BUS_VTABLE_UNPRIVILEGED ) ,
SD_BUS_METHOD ( " ListSeats " , NULL , " a(so) " , method_list_seats , SD_BUS_VTABLE_UNPRIVILEGED ) ,
SD_BUS_METHOD ( " ListInhibitors " , NULL , " a(ssssuu) " , method_list_inhibitors , SD_BUS_VTABLE_UNPRIVILEGED ) ,
2014-02-05 20:34:11 +01:00
SD_BUS_METHOD ( " CreateSession " , " uusssssussbssa(sv) " , " soshusub " , method_create_session , 0 ) ,
2013-11-05 01:10:21 +01:00
SD_BUS_METHOD ( " ReleaseSession " , " s " , NULL , method_release_session , 0 ) ,
2013-12-10 17:41:39 +01:00
SD_BUS_METHOD ( " ActivateSession " , " s " , NULL , method_activate_session , SD_BUS_VTABLE_UNPRIVILEGED ) ,
SD_BUS_METHOD ( " ActivateSessionOnSeat " , " ss " , NULL , method_activate_session_on_seat , SD_BUS_VTABLE_UNPRIVILEGED ) ,
2015-02-18 12:55:25 +01:00
SD_BUS_METHOD ( " LockSession " , " s " , NULL , method_lock_session , SD_BUS_VTABLE_UNPRIVILEGED ) ,
SD_BUS_METHOD ( " UnlockSession " , " s " , NULL , method_lock_session , SD_BUS_VTABLE_UNPRIVILEGED ) ,
SD_BUS_METHOD ( " LockSessions " , NULL , NULL , method_lock_sessions , SD_BUS_VTABLE_UNPRIVILEGED ) ,
SD_BUS_METHOD ( " UnlockSessions " , NULL , NULL , method_lock_sessions , SD_BUS_VTABLE_UNPRIVILEGED ) ,
SD_BUS_METHOD ( " KillSession " , " ssi " , NULL , method_kill_session , SD_BUS_VTABLE_UNPRIVILEGED ) ,
SD_BUS_METHOD ( " KillUser " , " ui " , NULL , method_kill_user , SD_BUS_VTABLE_UNPRIVILEGED ) ,
SD_BUS_METHOD ( " TerminateSession " , " s " , NULL , method_terminate_session , SD_BUS_VTABLE_UNPRIVILEGED ) ,
SD_BUS_METHOD ( " TerminateUser " , " u " , NULL , method_terminate_user , SD_BUS_VTABLE_UNPRIVILEGED ) ,
SD_BUS_METHOD ( " TerminateSeat " , " s " , NULL , method_terminate_seat , SD_BUS_VTABLE_UNPRIVILEGED ) ,
2013-12-10 17:41:39 +01:00
SD_BUS_METHOD ( " SetUserLinger " , " ubb " , NULL , method_set_user_linger , SD_BUS_VTABLE_UNPRIVILEGED ) ,
SD_BUS_METHOD ( " AttachDevice " , " ssb " , NULL , method_attach_device , SD_BUS_VTABLE_UNPRIVILEGED ) ,
SD_BUS_METHOD ( " FlushDevices " , " b " , NULL , method_flush_devices , SD_BUS_VTABLE_UNPRIVILEGED ) ,
SD_BUS_METHOD ( " PowerOff " , " b " , NULL , method_poweroff , SD_BUS_VTABLE_UNPRIVILEGED ) ,
SD_BUS_METHOD ( " Reboot " , " b " , NULL , method_reboot , SD_BUS_VTABLE_UNPRIVILEGED ) ,
logind: add Halt() and CanHalt() APIs
This adds new method calls Halt() and CanHalt() to the logind bus APIs.
They aren't overly useful (as the whole concept of halting isn't really
too useful), however they clean up one major asymmetry: currently, using
the "shutdown" legacy commands it is possibly to enqueue a "halt"
operation through logind, while logind officially doesn't actually
support this. Moreover, the path through "shutdown" currently ultimately
fails, since the referenced "halt" action isn't actually defined in
PolicyKit.
Finally, the current logic results in an unexpected asymmetry in
systemctl: "systemctl poweroff", "systemctl reboot" are currently
asynchronous (due to the logind involvement) while "systemctl halt"
isnt. Let's clean this up, and make all three APIs implemented by
logind natively, and all three hence asynchronous in "systemctl".
Moreover, let's add the missing PK action.
Fixes: #6957
2017-10-02 16:03:55 +02:00
SD_BUS_METHOD ( " Halt " , " b " , NULL , method_halt , SD_BUS_VTABLE_UNPRIVILEGED ) ,
2013-12-10 17:41:39 +01:00
SD_BUS_METHOD ( " Suspend " , " b " , NULL , method_suspend , SD_BUS_VTABLE_UNPRIVILEGED ) ,
SD_BUS_METHOD ( " Hibernate " , " b " , NULL , method_hibernate , SD_BUS_VTABLE_UNPRIVILEGED ) ,
SD_BUS_METHOD ( " HybridSleep " , " b " , NULL , method_hybrid_sleep , SD_BUS_VTABLE_UNPRIVILEGED ) ,
SD_BUS_METHOD ( " CanPowerOff " , NULL , " s " , method_can_poweroff , SD_BUS_VTABLE_UNPRIVILEGED ) ,
SD_BUS_METHOD ( " CanReboot " , NULL , " s " , method_can_reboot , SD_BUS_VTABLE_UNPRIVILEGED ) ,
logind: add Halt() and CanHalt() APIs
This adds new method calls Halt() and CanHalt() to the logind bus APIs.
They aren't overly useful (as the whole concept of halting isn't really
too useful), however they clean up one major asymmetry: currently, using
the "shutdown" legacy commands it is possibly to enqueue a "halt"
operation through logind, while logind officially doesn't actually
support this. Moreover, the path through "shutdown" currently ultimately
fails, since the referenced "halt" action isn't actually defined in
PolicyKit.
Finally, the current logic results in an unexpected asymmetry in
systemctl: "systemctl poweroff", "systemctl reboot" are currently
asynchronous (due to the logind involvement) while "systemctl halt"
isnt. Let's clean this up, and make all three APIs implemented by
logind natively, and all three hence asynchronous in "systemctl".
Moreover, let's add the missing PK action.
Fixes: #6957
2017-10-02 16:03:55 +02:00
SD_BUS_METHOD ( " CanHalt " , NULL , " s " , method_can_halt , SD_BUS_VTABLE_UNPRIVILEGED ) ,
2013-12-10 17:41:39 +01:00
SD_BUS_METHOD ( " CanSuspend " , NULL , " s " , method_can_suspend , SD_BUS_VTABLE_UNPRIVILEGED ) ,
SD_BUS_METHOD ( " CanHibernate " , NULL , " s " , method_can_hibernate , SD_BUS_VTABLE_UNPRIVILEGED ) ,
SD_BUS_METHOD ( " CanHybridSleep " , NULL , " s " , method_can_hybrid_sleep , SD_BUS_VTABLE_UNPRIVILEGED ) ,
2015-07-11 22:00:26 +02:00
SD_BUS_METHOD ( " ScheduleShutdown " , " st " , NULL , method_schedule_shutdown , SD_BUS_VTABLE_UNPRIVILEGED ) ,
SD_BUS_METHOD ( " CancelScheduledShutdown " , NULL , " b " , method_cancel_scheduled_shutdown , SD_BUS_VTABLE_UNPRIVILEGED ) ,
2013-12-10 17:41:39 +01:00
SD_BUS_METHOD ( " Inhibit " , " ssss " , " h " , method_inhibit , SD_BUS_VTABLE_UNPRIVILEGED ) ,
2015-04-03 18:03:06 +02:00
SD_BUS_METHOD ( " CanRebootToFirmwareSetup " , NULL , " s " , method_can_reboot_to_firmware_setup , SD_BUS_VTABLE_UNPRIVILEGED ) ,
2015-04-07 21:08:07 +02:00
SD_BUS_METHOD ( " SetRebootToFirmwareSetup " , " b " , NULL , method_set_reboot_to_firmware_setup , SD_BUS_VTABLE_UNPRIVILEGED ) ,
2015-08-24 14:54:22 +02:00
SD_BUS_METHOD ( " SetWallMessage " , " sb " , NULL , method_set_wall_message , SD_BUS_VTABLE_UNPRIVILEGED ) ,
2013-11-05 01:10:21 +01:00
SD_BUS_SIGNAL ( " SessionNew " , " so " , 0 ) ,
SD_BUS_SIGNAL ( " SessionRemoved " , " so " , 0 ) ,
SD_BUS_SIGNAL ( " UserNew " , " uo " , 0 ) ,
SD_BUS_SIGNAL ( " UserRemoved " , " uo " , 0 ) ,
SD_BUS_SIGNAL ( " SeatNew " , " so " , 0 ) ,
SD_BUS_SIGNAL ( " SeatRemoved " , " so " , 0 ) ,
SD_BUS_SIGNAL ( " PrepareForShutdown " , " b " , 0 ) ,
SD_BUS_SIGNAL ( " PrepareForSleep " , " b " , 0 ) ,
SD_BUS_VTABLE_END
} ;
2011-05-26 02:21:16 +02:00
2014-02-06 21:37:14 +01:00
static int session_jobs_reply ( Session * s , const char * unit , const char * result ) {
int r = 0 ;
assert ( s ) ;
assert ( unit ) ;
if ( ! s - > started )
return r ;
if ( streq ( result , " done " ) )
r = session_send_create_reply ( s , NULL ) ;
else {
tree-wide: expose "p"-suffix unref calls in public APIs to make gcc cleanup easy
GLIB has recently started to officially support the gcc cleanup
attribute in its public API, hence let's do the same for our APIs.
With this patch we'll define an xyz_unrefp() call for each public
xyz_unref() call, to make it easy to use inside a
__attribute__((cleanup())) expression. Then, all code is ported over to
make use of this.
The new calls are also documented in the man pages, with examples how to
use them (well, I only added docs where the _unref() call itself already
had docs, and the examples, only cover sd_bus_unrefp() and
sd_event_unrefp()).
This also renames sd_lldp_free() to sd_lldp_unref(), since that's how we
tend to call our destructors these days.
Note that this defines no public macro that wraps gcc's attribute and
makes it easier to use. While I think it's our duty in the library to
make our stuff easy to use, I figure it's not our duty to make gcc's own
features easy to use on its own. Most likely, client code which wants to
make use of this should define its own:
#define _cleanup_(function) __attribute__((cleanup(function)))
Or similar, to make the gcc feature easier to use.
Making this logic public has the benefit that we can remove three header
files whose only purpose was to define these functions internally.
See #2008.
2015-11-27 19:13:45 +01:00
_cleanup_ ( sd_bus_error_free ) sd_bus_error e = SD_BUS_ERROR_NULL ;
2014-02-06 21:37:14 +01:00
sd_bus_error_setf ( & e , BUS_ERROR_JOB_FAILED , " Start job for unit %s failed with '%s' " , unit , result ) ;
r = session_send_create_reply ( s , & e ) ;
}
return r ;
}
2015-04-29 18:35:10 +02:00
int match_job_removed ( sd_bus_message * message , void * userdata , sd_bus_error * error ) {
2013-11-05 01:10:21 +01:00
const char * path , * result , * unit ;
Manager * m = userdata ;
Session * session ;
uint32_t id ;
User * user ;
int r ;
2011-05-26 02:21:16 +02:00
2013-11-05 01:10:21 +01:00
assert ( message ) ;
assert ( m ) ;
2011-05-26 02:21:16 +02:00
2013-11-05 01:10:21 +01:00
r = sd_bus_message_read ( message , " uoss " , & id , & path , & unit , & result ) ;
if ( r < 0 ) {
2013-11-21 19:34:37 +01:00
bus_log_parse_error ( r ) ;
2015-08-06 15:46:16 +02:00
return 0 ;
2013-11-05 01:10:21 +01:00
}
2011-05-26 02:21:16 +02:00
2013-11-05 01:10:21 +01:00
if ( m - > action_job & & streq ( m - > action_job , path ) ) {
2015-10-14 22:22:17 +02:00
log_info ( " Operation '%s' finished. " , inhibit_what_to_string ( m - > action_what ) ) ;
2011-05-26 02:21:16 +02:00
2013-11-05 01:10:21 +01:00
/* Tell people that they now may take a lock again */
send_prepare_for ( m , m - > action_what , false ) ;
2011-05-26 02:21:16 +02:00
2015-08-06 15:48:17 +02:00
m - > action_job = mfree ( m - > action_job ) ;
2013-11-05 01:10:21 +01:00
m - > action_unit = NULL ;
m - > action_what = 0 ;
return 0 ;
}
2011-05-26 02:21:16 +02:00
2013-11-05 01:10:21 +01:00
session = hashmap_get ( m - > session_units , unit ) ;
2015-11-16 15:45:02 +01:00
if ( session & & streq_ptr ( path , session - > scope_job ) ) {
session - > scope_job = mfree ( session - > scope_job ) ;
2014-02-06 21:37:14 +01:00
session_jobs_reply ( session , unit , result ) ;
2011-05-26 02:21:16 +02:00
2014-02-06 21:37:14 +01:00
session_save ( session ) ;
2015-06-02 15:17:10 +02:00
user_save ( session - > user ) ;
2013-11-05 01:10:21 +01:00
session_add_to_gc_queue ( session ) ;
}
2011-05-26 02:21:16 +02:00
2013-11-05 01:10:21 +01:00
user = hashmap_get ( m - > user_units , unit ) ;
2015-11-16 15:45:02 +01:00
if ( user & &
( streq_ptr ( path , user - > service_job ) | |
streq_ptr ( path , user - > slice_job ) ) ) {
2011-05-26 02:21:16 +02:00
2015-08-06 15:48:17 +02:00
if ( streq_ptr ( path , user - > service_job ) )
user - > service_job = mfree ( user - > service_job ) ;
2011-05-26 02:21:16 +02:00
2015-08-06 15:48:17 +02:00
if ( streq_ptr ( path , user - > slice_job ) )
user - > slice_job = mfree ( user - > slice_job ) ;
2011-05-26 02:21:16 +02:00
2015-08-06 15:48:17 +02:00
LIST_FOREACH ( sessions_by_user , session , user - > sessions )
2014-02-06 21:37:14 +01:00
session_jobs_reply ( session , unit , result ) ;
2014-01-08 23:45:38 +01:00
2013-11-05 01:10:21 +01:00
user_save ( user ) ;
user_add_to_gc_queue ( user ) ;
2011-05-26 02:21:16 +02:00
}
2013-11-05 01:10:21 +01:00
return 0 ;
2011-05-26 02:21:16 +02:00
}
2015-04-29 18:35:10 +02:00
int match_unit_removed ( sd_bus_message * message , void * userdata , sd_bus_error * error ) {
2013-11-05 01:10:21 +01:00
const char * path , * unit ;
2011-06-24 20:41:56 +02:00
Manager * m = userdata ;
2013-11-05 01:10:21 +01:00
Session * session ;
User * user ;
int r ;
2011-06-24 20:41:56 +02:00
assert ( message ) ;
2013-11-05 01:10:21 +01:00
assert ( m ) ;
2011-06-24 20:41:56 +02:00
2013-11-05 01:10:21 +01:00
r = sd_bus_message_read ( message , " so " , & unit , & path ) ;
if ( r < 0 ) {
2013-11-21 19:34:37 +01:00
bus_log_parse_error ( r ) ;
2015-08-06 15:46:16 +02:00
return 0 ;
2013-11-05 01:10:21 +01:00
}
2013-07-02 01:46:30 +02:00
2013-11-05 01:10:21 +01:00
session = hashmap_get ( m - > session_units , unit ) ;
if ( session )
session_add_to_gc_queue ( session ) ;
2013-07-02 01:46:30 +02:00
2013-11-05 01:10:21 +01:00
user = hashmap_get ( m - > user_units , unit ) ;
if ( user )
user_add_to_gc_queue ( user ) ;
2013-07-02 01:46:30 +02:00
2013-11-05 01:10:21 +01:00
return 0 ;
}
2013-07-02 01:46:30 +02:00
2015-04-29 18:35:10 +02:00
int match_properties_changed ( sd_bus_message * message , void * userdata , sd_bus_error * error ) {
2013-11-05 01:10:21 +01:00
_cleanup_free_ char * unit = NULL ;
Manager * m = userdata ;
const char * path ;
Session * session ;
User * user ;
2013-11-21 19:34:37 +01:00
int r ;
2013-07-02 01:46:30 +02:00
2013-11-05 01:10:21 +01:00
assert ( message ) ;
assert ( m ) ;
2013-07-02 01:46:30 +02:00
2013-11-05 01:10:21 +01:00
path = sd_bus_message_get_path ( message ) ;
if ( ! path )
return 0 ;
2013-07-02 01:46:30 +02:00
2013-11-21 19:34:37 +01:00
r = unit_name_from_dbus_path ( path , & unit ) ;
2014-12-29 19:08:50 +01:00
if ( r = = - EINVAL ) /* not a unit */
return 0 ;
2015-08-06 15:46:16 +02:00
if ( r < 0 ) {
log_oom ( ) ;
return 0 ;
}
2013-07-02 01:46:30 +02:00
2013-11-05 01:10:21 +01:00
session = hashmap_get ( m - > session_units , unit ) ;
if ( session )
session_add_to_gc_queue ( session ) ;
2013-07-02 01:46:30 +02:00
2013-11-05 01:10:21 +01:00
user = hashmap_get ( m - > user_units , unit ) ;
if ( user )
user_add_to_gc_queue ( user ) ;
2013-07-02 01:46:30 +02:00
2013-11-05 01:10:21 +01:00
return 0 ;
}
2013-07-10 19:24:03 +02:00
2015-04-29 18:35:10 +02:00
int match_reloading ( sd_bus_message * message , void * userdata , sd_bus_error * error ) {
2013-11-05 01:10:21 +01:00
Manager * m = userdata ;
Session * session ;
Iterator i ;
int b , r ;
2013-07-03 15:12:58 +02:00
2015-04-29 18:35:10 +02:00
assert ( message ) ;
assert ( m ) ;
2013-07-03 15:12:58 +02:00
2013-11-05 01:10:21 +01:00
r = sd_bus_message_read ( message , " b " , & b ) ;
if ( r < 0 ) {
2013-11-21 19:34:37 +01:00
bus_log_parse_error ( r ) ;
2015-08-06 15:46:16 +02:00
return 0 ;
2013-11-05 01:10:21 +01:00
}
2013-07-03 15:12:58 +02:00
2013-11-05 01:10:21 +01:00
if ( b )
return 0 ;
2013-07-03 15:12:58 +02:00
2013-11-05 01:10:21 +01:00
/* systemd finished reloading, let's recheck all our sessions */
log_debug ( " System manager has been reloaded, rechecking sessions... " ) ;
2013-07-10 23:31:40 +02:00
2013-11-05 01:10:21 +01:00
HASHMAP_FOREACH ( session , m - > sessions , i )
session_add_to_gc_queue ( session ) ;
2013-07-10 23:31:40 +02:00
2013-11-05 01:10:21 +01:00
return 0 ;
}
2013-07-03 15:12:58 +02:00
2013-11-05 01:10:21 +01:00
int manager_send_changed ( Manager * manager , const char * property , . . . ) {
char * * l ;
2011-06-21 21:46:13 +02:00
assert ( manager ) ;
2013-11-05 01:10:21 +01:00
l = strv_from_stdarg_alloca ( property ) ;
2011-06-21 21:46:13 +02:00
2013-11-05 01:10:21 +01:00
return sd_bus_emit_properties_changed_strv (
manager - > bus ,
" /org/freedesktop/login1 " ,
" org.freedesktop.login1.Manager " ,
l ) ;
2011-06-21 21:46:13 +02:00
}
2012-05-05 00:34:48 +02:00
2016-01-13 04:02:18 +01:00
static int strdup_job ( sd_bus_message * reply , char * * job ) {
const char * j ;
char * copy ;
int r ;
r = sd_bus_message_read ( reply , " o " , & j ) ;
if ( r < 0 )
return r ;
copy = strdup ( j ) ;
if ( ! copy )
return - ENOMEM ;
* job = copy ;
return 1 ;
}
2015-11-13 18:25:02 +01:00
int manager_start_slice (
Manager * manager ,
const char * slice ,
const char * description ,
const char * after ,
const char * after2 ,
uint64_t tasks_max ,
sd_bus_error * error ,
char * * job ) {
tree-wide: expose "p"-suffix unref calls in public APIs to make gcc cleanup easy
GLIB has recently started to officially support the gcc cleanup
attribute in its public API, hence let's do the same for our APIs.
With this patch we'll define an xyz_unrefp() call for each public
xyz_unref() call, to make it easy to use inside a
__attribute__((cleanup())) expression. Then, all code is ported over to
make use of this.
The new calls are also documented in the man pages, with examples how to
use them (well, I only added docs where the _unref() call itself already
had docs, and the examples, only cover sd_bus_unrefp() and
sd_event_unrefp()).
This also renames sd_lldp_free() to sd_lldp_unref(), since that's how we
tend to call our destructors these days.
Note that this defines no public macro that wraps gcc's attribute and
makes it easier to use. While I think it's our duty in the library to
make our stuff easy to use, I figure it's not our duty to make gcc's own
features easy to use on its own. Most likely, client code which wants to
make use of this should define its own:
#define _cleanup_(function) __attribute__((cleanup(function)))
Or similar, to make the gcc feature easier to use.
Making this logic public has the benefit that we can remove three header
files whose only purpose was to define these functions internally.
See #2008.
2015-11-27 19:13:45 +01:00
_cleanup_ ( sd_bus_message_unrefp ) sd_bus_message * m = NULL , * reply = NULL ;
2015-11-13 18:25:02 +01:00
int r ;
assert ( manager ) ;
assert ( slice ) ;
2016-01-13 04:02:18 +01:00
assert ( job ) ;
2015-11-13 18:25:02 +01:00
r = sd_bus_message_new_method_call (
manager - > bus ,
& m ,
" org.freedesktop.systemd1 " ,
" /org/freedesktop/systemd1 " ,
" org.freedesktop.systemd1.Manager " ,
" StartTransientUnit " ) ;
if ( r < 0 )
return r ;
r = sd_bus_message_append ( m , " ss " , strempty ( slice ) , " fail " ) ;
if ( r < 0 )
return r ;
r = sd_bus_message_open_container ( m , ' a ' , " (sv) " ) ;
if ( r < 0 )
return r ;
if ( ! isempty ( description ) ) {
r = sd_bus_message_append ( m , " (sv) " , " Description " , " s " , description ) ;
if ( r < 0 )
return r ;
}
if ( ! isempty ( after ) ) {
r = sd_bus_message_append ( m , " (sv) " , " After " , " as " , 1 , after ) ;
if ( r < 0 )
return r ;
}
if ( ! isempty ( after2 ) ) {
r = sd_bus_message_append ( m , " (sv) " , " After " , " as " , 1 , after2 ) ;
if ( r < 0 )
return r ;
}
r = sd_bus_message_append ( m , " (sv) " , " TasksMax " , " t " , tasks_max ) ;
if ( r < 0 )
return r ;
r = sd_bus_message_close_container ( m ) ;
if ( r < 0 )
return r ;
r = sd_bus_message_append ( m , " a(sa(sv)) " , 0 ) ;
if ( r < 0 )
return r ;
r = sd_bus_call ( manager - > bus , m , 0 , error , & reply ) ;
if ( r < 0 )
return r ;
2016-01-13 04:02:18 +01:00
return strdup_job ( reply , job ) ;
2015-11-13 18:25:02 +01:00
}
2013-07-02 01:46:30 +02:00
int manager_start_scope (
Manager * manager ,
const char * scope ,
pid_t pid ,
const char * slice ,
const char * description ,
2015-11-13 18:25:02 +01:00
const char * after ,
const char * after2 ,
uint64_t tasks_max ,
2013-11-05 01:10:21 +01:00
sd_bus_error * error ,
2013-07-02 01:46:30 +02:00
char * * job ) {
tree-wide: expose "p"-suffix unref calls in public APIs to make gcc cleanup easy
GLIB has recently started to officially support the gcc cleanup
attribute in its public API, hence let's do the same for our APIs.
With this patch we'll define an xyz_unrefp() call for each public
xyz_unref() call, to make it easy to use inside a
__attribute__((cleanup())) expression. Then, all code is ported over to
make use of this.
The new calls are also documented in the man pages, with examples how to
use them (well, I only added docs where the _unref() call itself already
had docs, and the examples, only cover sd_bus_unrefp() and
sd_event_unrefp()).
This also renames sd_lldp_free() to sd_lldp_unref(), since that's how we
tend to call our destructors these days.
Note that this defines no public macro that wraps gcc's attribute and
makes it easier to use. While I think it's our duty in the library to
make our stuff easy to use, I figure it's not our duty to make gcc's own
features easy to use on its own. Most likely, client code which wants to
make use of this should define its own:
#define _cleanup_(function) __attribute__((cleanup(function)))
Or similar, to make the gcc feature easier to use.
Making this logic public has the benefit that we can remove three header
files whose only purpose was to define these functions internally.
See #2008.
2015-11-27 19:13:45 +01:00
_cleanup_ ( sd_bus_message_unrefp ) sd_bus_message * m = NULL , * reply = NULL ;
2013-11-05 01:10:21 +01:00
int r ;
2013-07-02 01:46:30 +02:00
assert ( manager ) ;
assert ( scope ) ;
assert ( pid > 1 ) ;
2016-01-13 04:02:18 +01:00
assert ( job ) ;
2013-07-02 01:46:30 +02:00
2013-11-05 01:10:21 +01:00
r = sd_bus_message_new_method_call (
manager - > bus ,
2014-02-19 23:54:58 +01:00
& m ,
2013-07-02 01:46:30 +02:00
" org.freedesktop.systemd1 " ,
" /org/freedesktop/systemd1 " ,
" org.freedesktop.systemd1.Manager " ,
2014-02-19 23:54:58 +01:00
" StartTransientUnit " ) ;
2013-11-05 01:10:21 +01:00
if ( r < 0 )
return r ;
2013-07-02 01:46:30 +02:00
2013-11-05 01:10:21 +01:00
r = sd_bus_message_append ( m , " ss " , strempty ( scope ) , " fail " ) ;
if ( r < 0 )
return r ;
2013-07-02 01:46:30 +02:00
2013-11-05 01:10:21 +01:00
r = sd_bus_message_open_container ( m , ' a ' , " (sv) " ) ;
if ( r < 0 )
return r ;
2013-07-02 01:46:30 +02:00
if ( ! isempty ( slice ) ) {
2013-11-05 01:10:21 +01:00
r = sd_bus_message_append ( m , " (sv) " , " Slice " , " s " , slice ) ;
if ( r < 0 )
return r ;
2013-07-02 01:46:30 +02:00
}
if ( ! isempty ( description ) ) {
2013-11-05 01:10:21 +01:00
r = sd_bus_message_append ( m , " (sv) " , " Description " , " s " , description ) ;
if ( r < 0 )
return r ;
2013-07-02 01:46:30 +02:00
}
2014-02-07 16:42:03 +01:00
if ( ! isempty ( after ) ) {
2013-11-05 01:10:21 +01:00
r = sd_bus_message_append ( m , " (sv) " , " After " , " as " , 1 , after ) ;
if ( r < 0 )
return r ;
2013-07-10 23:39:46 +02:00
}
2014-02-07 16:42:03 +01:00
if ( ! isempty ( after2 ) ) {
r = sd_bus_message_append ( m , " (sv) " , " After " , " as " , 1 , after2 ) ;
if ( r < 0 )
return r ;
}
2013-07-02 01:46:30 +02:00
/* cgroup empty notification is not available in containers
* currently . To make this less problematic , let ' s shorten the
* stop timeout for sessions , so that we don ' t wait
* forever . */
2013-07-30 02:51:12 +02:00
/* Make sure that the session shells are terminated with
* SIGHUP since bash and friends tend to ignore SIGTERM */
2013-11-05 01:10:21 +01:00
r = sd_bus_message_append ( m , " (sv) " , " SendSIGHUP " , " b " , true ) ;
if ( r < 0 )
return r ;
r = sd_bus_message_append ( m , " (sv) " , " PIDs " , " au " , 1 , pid ) ;
if ( r < 0 )
return r ;
2015-11-13 18:25:02 +01:00
r = sd_bus_message_append ( m , " (sv) " , " TasksMax " , " t " , tasks_max ) ;
if ( r < 0 )
return r ;
2013-11-05 01:10:21 +01:00
r = sd_bus_message_close_container ( m ) ;
if ( r < 0 )
return r ;
2013-11-21 20:05:49 +01:00
r = sd_bus_message_append ( m , " a(sa(sv)) " , 0 ) ;
if ( r < 0 )
return r ;
2013-11-05 01:10:21 +01:00
2013-11-11 18:55:34 +01:00
r = sd_bus_call ( manager - > bus , m , 0 , error , & reply ) ;
2013-11-05 01:10:21 +01:00
if ( r < 0 )
return r ;
2013-07-02 01:46:30 +02:00
2016-01-13 04:02:18 +01:00
return strdup_job ( reply , job ) ;
2013-07-02 01:46:30 +02:00
}
2013-11-05 01:10:21 +01:00
int manager_start_unit ( Manager * manager , const char * unit , sd_bus_error * error , char * * job ) {
tree-wide: expose "p"-suffix unref calls in public APIs to make gcc cleanup easy
GLIB has recently started to officially support the gcc cleanup
attribute in its public API, hence let's do the same for our APIs.
With this patch we'll define an xyz_unrefp() call for each public
xyz_unref() call, to make it easy to use inside a
__attribute__((cleanup())) expression. Then, all code is ported over to
make use of this.
The new calls are also documented in the man pages, with examples how to
use them (well, I only added docs where the _unref() call itself already
had docs, and the examples, only cover sd_bus_unrefp() and
sd_event_unrefp()).
This also renames sd_lldp_free() to sd_lldp_unref(), since that's how we
tend to call our destructors these days.
Note that this defines no public macro that wraps gcc's attribute and
makes it easier to use. While I think it's our duty in the library to
make our stuff easy to use, I figure it's not our duty to make gcc's own
features easy to use on its own. Most likely, client code which wants to
make use of this should define its own:
#define _cleanup_(function) __attribute__((cleanup(function)))
Or similar, to make the gcc feature easier to use.
Making this logic public has the benefit that we can remove three header
files whose only purpose was to define these functions internally.
See #2008.
2015-11-27 19:13:45 +01:00
_cleanup_ ( sd_bus_message_unrefp ) sd_bus_message * reply = NULL ;
2013-07-02 01:46:30 +02:00
int r ;
assert ( manager ) ;
assert ( unit ) ;
2016-01-13 04:02:18 +01:00
assert ( job ) ;
2013-07-02 01:46:30 +02:00
2013-11-05 01:10:21 +01:00
r = sd_bus_call_method (
2013-07-02 01:46:30 +02:00
manager - > bus ,
" org.freedesktop.systemd1 " ,
" /org/freedesktop/systemd1 " ,
" org.freedesktop.systemd1.Manager " ,
" StartUnit " ,
error ,
2013-11-05 01:10:21 +01:00
& reply ,
2015-11-16 15:43:18 +01:00
" ss " , unit , " replace " ) ;
2013-11-05 01:10:21 +01:00
if ( r < 0 )
2013-07-02 01:46:30 +02:00
return r ;
2016-01-13 04:02:18 +01:00
return strdup_job ( reply , job ) ;
2013-07-02 01:46:30 +02:00
}
2013-11-05 01:10:21 +01:00
int manager_stop_unit ( Manager * manager , const char * unit , sd_bus_error * error , char * * job ) {
tree-wide: expose "p"-suffix unref calls in public APIs to make gcc cleanup easy
GLIB has recently started to officially support the gcc cleanup
attribute in its public API, hence let's do the same for our APIs.
With this patch we'll define an xyz_unrefp() call for each public
xyz_unref() call, to make it easy to use inside a
__attribute__((cleanup())) expression. Then, all code is ported over to
make use of this.
The new calls are also documented in the man pages, with examples how to
use them (well, I only added docs where the _unref() call itself already
had docs, and the examples, only cover sd_bus_unrefp() and
sd_event_unrefp()).
This also renames sd_lldp_free() to sd_lldp_unref(), since that's how we
tend to call our destructors these days.
Note that this defines no public macro that wraps gcc's attribute and
makes it easier to use. While I think it's our duty in the library to
make our stuff easy to use, I figure it's not our duty to make gcc's own
features easy to use on its own. Most likely, client code which wants to
make use of this should define its own:
#define _cleanup_(function) __attribute__((cleanup(function)))
Or similar, to make the gcc feature easier to use.
Making this logic public has the benefit that we can remove three header
files whose only purpose was to define these functions internally.
See #2008.
2015-11-27 19:13:45 +01:00
_cleanup_ ( sd_bus_message_unrefp ) sd_bus_message * reply = NULL ;
2013-07-02 01:46:30 +02:00
int r ;
assert ( manager ) ;
assert ( unit ) ;
2016-01-13 04:02:18 +01:00
assert ( job ) ;
2013-07-02 01:46:30 +02:00
2013-11-05 01:10:21 +01:00
r = sd_bus_call_method (
2013-07-02 01:46:30 +02:00
manager - > bus ,
" org.freedesktop.systemd1 " ,
" /org/freedesktop/systemd1 " ,
" org.freedesktop.systemd1.Manager " ,
" StopUnit " ,
error ,
2013-11-05 01:10:21 +01:00
& reply ,
" ss " , unit , " fail " ) ;
2013-07-02 01:46:30 +02:00
if ( r < 0 ) {
2013-11-05 01:10:21 +01:00
if ( sd_bus_error_has_name ( error , BUS_ERROR_NO_SUCH_UNIT ) | |
sd_bus_error_has_name ( error , BUS_ERROR_LOAD_FAILED ) ) {
2013-07-10 23:31:40 +02:00
2016-01-13 04:02:18 +01:00
* job = NULL ;
2013-11-05 01:10:21 +01:00
sd_bus_error_free ( error ) ;
2013-07-10 23:31:40 +02:00
return 0 ;
}
2013-07-02 01:46:30 +02:00
return r ;
}
2016-01-13 04:02:18 +01:00
return strdup_job ( reply , job ) ;
2013-07-02 01:46:30 +02:00
}
2014-02-06 18:32:14 +01:00
int manager_abandon_scope ( Manager * manager , const char * scope , sd_bus_error * error ) {
_cleanup_free_ char * path = NULL ;
int r ;
assert ( manager ) ;
assert ( scope ) ;
path = unit_dbus_path_from_name ( scope ) ;
if ( ! path )
return - ENOMEM ;
r = sd_bus_call_method (
manager - > bus ,
" org.freedesktop.systemd1 " ,
path ,
" org.freedesktop.systemd1.Scope " ,
" Abandon " ,
error ,
NULL ,
NULL ) ;
if ( r < 0 ) {
if ( sd_bus_error_has_name ( error , BUS_ERROR_NO_SUCH_UNIT ) | |
2014-02-07 17:59:27 +01:00
sd_bus_error_has_name ( error , BUS_ERROR_LOAD_FAILED ) | |
sd_bus_error_has_name ( error , BUS_ERROR_SCOPE_NOT_RUNNING ) ) {
2014-02-06 18:32:14 +01:00
sd_bus_error_free ( error ) ;
return 0 ;
}
return r ;
}
return 1 ;
}
2013-11-05 01:10:21 +01:00
int manager_kill_unit ( Manager * manager , const char * unit , KillWho who , int signo , sd_bus_error * error ) {
2013-07-02 01:46:30 +02:00
assert ( manager ) ;
assert ( unit ) ;
2013-11-05 01:10:21 +01:00
return sd_bus_call_method (
2013-07-02 01:46:30 +02:00
manager - > bus ,
" org.freedesktop.systemd1 " ,
" /org/freedesktop/systemd1 " ,
" org.freedesktop.systemd1.Manager " ,
" KillUnit " ,
error ,
2013-11-05 01:10:21 +01:00
NULL ,
" ssi " , unit , who = = KILL_LEADER ? " main " : " all " , signo ) ;
2013-07-02 01:46:30 +02:00
}
int manager_unit_is_active ( Manager * manager , const char * unit ) {
tree-wide: expose "p"-suffix unref calls in public APIs to make gcc cleanup easy
GLIB has recently started to officially support the gcc cleanup
attribute in its public API, hence let's do the same for our APIs.
With this patch we'll define an xyz_unrefp() call for each public
xyz_unref() call, to make it easy to use inside a
__attribute__((cleanup())) expression. Then, all code is ported over to
make use of this.
The new calls are also documented in the man pages, with examples how to
use them (well, I only added docs where the _unref() call itself already
had docs, and the examples, only cover sd_bus_unrefp() and
sd_event_unrefp()).
This also renames sd_lldp_free() to sd_lldp_unref(), since that's how we
tend to call our destructors these days.
Note that this defines no public macro that wraps gcc's attribute and
makes it easier to use. While I think it's our duty in the library to
make our stuff easy to use, I figure it's not our duty to make gcc's own
features easy to use on its own. Most likely, client code which wants to
make use of this should define its own:
#define _cleanup_(function) __attribute__((cleanup(function)))
Or similar, to make the gcc feature easier to use.
Making this logic public has the benefit that we can remove three header
files whose only purpose was to define these functions internally.
See #2008.
2015-11-27 19:13:45 +01:00
_cleanup_ ( sd_bus_error_free ) sd_bus_error error = SD_BUS_ERROR_NULL ;
_cleanup_ ( sd_bus_message_unrefp ) sd_bus_message * reply = NULL ;
2013-07-02 01:46:30 +02:00
_cleanup_free_ char * path = NULL ;
const char * state ;
int r ;
assert ( manager ) ;
assert ( unit ) ;
path = unit_dbus_path_from_name ( unit ) ;
if ( ! path )
return - ENOMEM ;
2013-11-05 01:10:21 +01:00
r = sd_bus_get_property (
2013-07-02 01:46:30 +02:00
manager - > bus ,
" org.freedesktop.systemd1 " ,
path ,
2013-11-05 01:10:21 +01:00
" org.freedesktop.systemd1.Unit " ,
" ActiveState " ,
2013-07-02 01:46:30 +02:00
& error ,
2013-11-05 01:10:21 +01:00
& reply ,
" s " ) ;
2013-07-02 01:46:30 +02:00
if ( r < 0 ) {
2013-11-05 01:10:21 +01:00
/* systemd might have droppped off momentarily, let's
* not make this an error */
if ( sd_bus_error_has_name ( & error , SD_BUS_ERROR_NO_REPLY ) | |
sd_bus_error_has_name ( & error , SD_BUS_ERROR_DISCONNECTED ) )
2013-07-10 23:31:40 +02:00
return true ;
2013-11-05 01:10:21 +01:00
/* If the unit is already unloaded then it's not
* active */
if ( sd_bus_error_has_name ( & error , BUS_ERROR_NO_SUCH_UNIT ) | |
sd_bus_error_has_name ( & error , BUS_ERROR_LOAD_FAILED ) )
2013-07-10 23:31:40 +02:00
return false ;
2013-07-02 01:46:30 +02:00
return r ;
}
2013-11-05 01:10:21 +01:00
r = sd_bus_message_read ( reply , " s " , & state ) ;
if ( r < 0 )
2013-07-02 01:46:30 +02:00
return - EINVAL ;
2013-11-05 01:10:21 +01:00
return ! streq ( state , " inactive " ) & & ! streq ( state , " failed " ) ;
}
int manager_job_is_active ( Manager * manager , const char * path ) {
tree-wide: expose "p"-suffix unref calls in public APIs to make gcc cleanup easy
GLIB has recently started to officially support the gcc cleanup
attribute in its public API, hence let's do the same for our APIs.
With this patch we'll define an xyz_unrefp() call for each public
xyz_unref() call, to make it easy to use inside a
__attribute__((cleanup())) expression. Then, all code is ported over to
make use of this.
The new calls are also documented in the man pages, with examples how to
use them (well, I only added docs where the _unref() call itself already
had docs, and the examples, only cover sd_bus_unrefp() and
sd_event_unrefp()).
This also renames sd_lldp_free() to sd_lldp_unref(), since that's how we
tend to call our destructors these days.
Note that this defines no public macro that wraps gcc's attribute and
makes it easier to use. While I think it's our duty in the library to
make our stuff easy to use, I figure it's not our duty to make gcc's own
features easy to use on its own. Most likely, client code which wants to
make use of this should define its own:
#define _cleanup_(function) __attribute__((cleanup(function)))
Or similar, to make the gcc feature easier to use.
Making this logic public has the benefit that we can remove three header
files whose only purpose was to define these functions internally.
See #2008.
2015-11-27 19:13:45 +01:00
_cleanup_ ( sd_bus_error_free ) sd_bus_error error = SD_BUS_ERROR_NULL ;
_cleanup_ ( sd_bus_message_unrefp ) sd_bus_message * reply = NULL ;
2013-11-05 01:10:21 +01:00
int r ;
assert ( manager ) ;
assert ( path ) ;
r = sd_bus_get_property (
manager - > bus ,
" org.freedesktop.systemd1 " ,
path ,
" org.freedesktop.systemd1.Job " ,
" State " ,
& error ,
& reply ,
" s " ) ;
if ( r < 0 ) {
if ( sd_bus_error_has_name ( & error , SD_BUS_ERROR_NO_REPLY ) | |
sd_bus_error_has_name ( & error , SD_BUS_ERROR_DISCONNECTED ) )
return true ;
if ( sd_bus_error_has_name ( & error , SD_BUS_ERROR_UNKNOWN_OBJECT ) )
return false ;
return r ;
2013-07-02 01:46:30 +02:00
}
2013-11-05 01:10:21 +01:00
/* We don't actually care about the state really. The fact
* that we could read the job state is enough for us */
2013-07-02 01:46:30 +02:00
2013-11-05 01:10:21 +01:00
return true ;
2013-07-02 01:46:30 +02:00
}