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logind: add infrastructure to keep track of machines, and move to slices 

- This changes all logind cgroup objects to use slice objects rather
  than fixed croup locations.

- logind can now collect minimal information about running
  VMs/containers. As fixed cgroup locations can no longer be used we
  need an entity that keeps track of machine cgroups in whatever slice
  they might be located. Since logind already keeps track of users,
  sessions and seats this is a trivial addition.

- nspawn will now register with logind and pass various bits of metadata
  along. A new option "--slice=" has been added to place the container
  in a specific slice.

- loginctl gained commands to list, introspect and terminate machines.

- user.slice and machine.slice will now be pulled in by logind.service,
  since only logind.service requires this slice.
This commit is contained in:
Lennart Poettering 2013-06-20 03:45:08 +02:00
parent 77f40f165c
commit 9444b1f20e
41 changed files with 2539 additions and 714 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

13
Makefile.am
View File

@ -379,8 +379,6 @@ dist_systemunit_DATA = \
units/swap.target \
units/slices.target \
units/system.slice \
units/user.slice \
units/machine.slice \
units/systemd-initctl.socket \
units/systemd-shutdownd.socket \
units/syslog.socket \
@ -1701,7 +1699,8 @@ systemd_nspawn_LDADD = \
libsystemd-capability.la \
libsystemd-shared.la \
libsystemd-daemon.la \
libsystemd-id128-internal.la
libsystemd-id128-internal.la \
libsystemd-bus.la
# ------------------------------------------------------------------------------
systemd_stdio_bridge_SOURCES = \
@ -3552,6 +3551,8 @@ systemd_logind_SOURCES = \
src/login/logind-seat.h \
src/login/logind-session.c \
src/login/logind-session.h \
src/login/logind-machine.c \
src/login/logind-machine.h \
src/login/logind-user.c \
src/login/logind-user.h \
src/login/logind-inhibit.c \
@ -3559,6 +3560,7 @@ systemd_logind_SOURCES = \
src/login/logind-session-dbus.c \
src/login/logind-seat-dbus.c \
src/login/logind-user-dbus.c \
src/login/logind-machine-dbus.c \
src/login/logind-acl.h
nodist_systemd_logind_SOURCES = \
@ -3574,6 +3576,7 @@ systemd_logind_LDADD = \
libsystemd-shared.la \
libsystemd-daemon.la \
libsystemd-dbus.la \
libsystemd-id128-internal.la \
libudev.la
if HAVE_ACL
@ -3710,6 +3713,8 @@ UNINSTALL_EXEC_HOOKS += libsystemd-login-uninstall-hook
nodist_systemunit_DATA += \
units/systemd-logind.service \
units/systemd-user-sessions.service
units/user.slice \
units/machine.slice
dist_dbussystemservice_DATA += \
src/login/org.freedesktop.login1.service
@ -4186,8 +4191,6 @@ USER_UNIT_ALIASES += \
GENERAL_ALIASES += \
$(systemunitdir)/remote-fs.target $(pkgsysconfdir)/system/multi-user.target.wants/remote-fs.target \
$(systemunitdir)/getty@.service $(pkgsysconfdir)/system/getty.target.wants/getty@tty1.service \
$(systemunitdir)/machine.slice $(pkgsysconfdir)/system/slices.target.wants/machine.slice \
$(systemunitdir)/user.slice $(pkgsysconfdir)/system/slices.target.wants/user.slice \
$(pkgsysconfdir)/user $(sysconfdir)/xdg/systemd/user \
../system-services/org.freedesktop.systemd1.service $(dbussessionservicedir)/org.freedesktop.systemd1.service

19
TODO
View File

@ -28,20 +28,33 @@ Fedora 19:
Features:
* move systemctl dump to systemd-analyze
* libsystemd-logind: sd_session_is_active() and friends: verify
validity of session name before appending it to a path
* logind: when a PAM client calls ReleaseSession() start a timeout and
kill the session entirely after that is reached.
* gparted needs to disable auto-activation of mount units somehow, or
maybe we should stop doing auto-activiation of this after boot
entirely. https://bugzilla.gnome.org/show_bug.cgi?id=701676
* when a service changes state make reflect that in the
RUNNING/LISTENING states of its socket
* slices:
- fix libsystemd-login to handle slices properly
- add option to pam_systemd to move login session into a slice
- add call to logind's dbus intrface to register a machine (also, calls for listing them)
- remove ControlGroup= setting
- in sd_pid_get_owner_uid() fallback to query session file
- add api to determine slice of unit
* when recursively showing the cgroup hierarchy, optionally also show
the hierarchies of child processes
* document logic of auto/noauto and fail/nofail in fstab in systemd.mount or systemd-fstab-generator man page
* we should properly escape hostnames we add into dbus server strings
* we should properly escape ssh hostnames we add into dbus server strings
* something pulls in pcre as so dep into our daemons such as hostnamed.

18
catalog/systemd.catalog
View File

@ -269,3 +269,21 @@ This does not interfere with mounting, but the pre-exisiting files in
this directory become inaccessible. To see those over-mounted files,
please manually mount the underlying file system to a secondary
location.
-- 24d8d4452573402496068381a6312df2
Subject: A virtual machine or container has been started
Defined-By: systemd
Support: http://lists.freedesktop.org/mailman/listinfo/systemd-devel
Documentation: http://www.freedesktop.org/wiki/Software/systemd/catalog/@MESSAGE_ID@
The virtual machine @NAME@ with its leader PID @LEADER@ has been
started is now ready to use.
-- 58432bd3bace477cb514b56381b8a758
Subject: A virtual machine or container has been terminated
Defined-By: systemd
Support: http://lists.freedesktop.org/mailman/listinfo/systemd-devel
Documentation: http://www.freedesktop.org/wiki/Software/systemd/catalog/@MESSAGE_ID@
The virtual machine @NAME@ with its leader PID @LEADER@ has been
shut down.

9
src/cgls/cgls.c
View File

@ -34,6 +34,7 @@
#include "pager.h"
#include "build.h"
#include "output-mode.h"
#include "fileio.h"
static bool arg_no_pager = false;
static bool arg_kernel_threads = false;
@ -184,9 +185,11 @@ int main(int argc, char *argv[]) {
r = show_cgroup_by_path(p, NULL, 0,
arg_kernel_threads, output_flags);
} else {
if (arg_machine)
r = cg_get_machine_path(arg_machine, &root);
else
if (arg_machine) {
char *m;
m = strappenda("/run/systemd/machines/", arg_machine);
r = parse_env_file(m, NEWLINE, "CGROUP", &root, NULL);
} else
r = cg_get_root_path(&root);
if (r < 0) {
log_error("Failed to get %s path: %s",

69
src/core/cgroup.c
View File

@ -32,6 +32,7 @@
#include "log.h"
#include "strv.h"
#include "path-util.h"
#include "special.h"
int cgroup_bonding_realize(CGroupBonding *b) {
int r;
@ -304,7 +305,8 @@ int cgroup_bonding_is_empty_list(CGroupBonding *first) {
LIST_FOREACH(by_unit, b, first) {
int r;
if ((r = cgroup_bonding_is_empty(b)) < 0) {
r = cgroup_bonding_is_empty(b);
if (r < 0) {
/* If this returned -EAGAIN, then we don't know if the
* group is empty, so let's see if another group can
* tell us */
@ -319,10 +321,9 @@ int cgroup_bonding_is_empty_list(CGroupBonding *first) {
}
int manager_setup_cgroup(Manager *m) {
_cleanup_free_ char *current = NULL, *path = NULL;
char suffix_buffer[sizeof("/systemd-") + DECIMAL_STR_MAX(pid_t)];
const char *suffix;
_cleanup_free_ char *path = NULL;
int r;
char *e, *a;
assert(m);
@ -333,37 +334,30 @@ int manager_setup_cgroup(Manager *m) {
}
/* 1. Determine hierarchy */
r = cg_pid_get_path(SYSTEMD_CGROUP_CONTROLLER, 0, &current);
free(m->cgroup_root);
m->cgroup_root = NULL;
r = cg_pid_get_path(SYSTEMD_CGROUP_CONTROLLER, 0, &m->cgroup_root);
if (r < 0) {
log_error("Cannot determine cgroup we are running in: %s", strerror(-r));
return r;
}
if (m->running_as == SYSTEMD_SYSTEM)
suffix = NULL;
else {
sprintf(suffix_buffer, "/systemd-%lu", (unsigned long) getpid());
suffix = suffix_buffer;
/* Already in /system.slice? If so, let's cut this off again */
if (m->running_as == SYSTEMD_SYSTEM) {
e = endswith(m->cgroup_root, "/" SPECIAL_SYSTEM_SLICE);
if (e)
*e = 0;
}
free(m->cgroup_hierarchy);
if (!suffix || endswith(current, suffix)) {
/* We probably got reexecuted and can continue to use our root cgroup */
m->cgroup_hierarchy = current;
current = NULL;
} else {
/* We need a new root cgroup */
if (streq(current, "/"))
m->cgroup_hierarchy = strdup(suffix);
else
m->cgroup_hierarchy = strappend(current, suffix);
if (!m->cgroup_hierarchy)
return log_oom();
}
/* And make sure to store away the root value without trailing
* slash, even for the root dir, so that we can easily prepend
* it everywhere. */
if (streq(m->cgroup_root, "/"))
m->cgroup_root[0] = 0;
/* 2. Show data */
r = cg_get_path(SYSTEMD_CGROUP_CONTROLLER, m->cgroup_hierarchy, NULL, &path);
r = cg_get_path(SYSTEMD_CGROUP_CONTROLLER, m->cgroup_root, NULL, &path);
if (r < 0) {
log_error("Cannot find cgroup mount point: %s", strerror(-r));
return r;
@ -382,8 +376,9 @@ int manager_setup_cgroup(Manager *m) {
log_debug("Release agent already installed.");
}
/* 4. Realize the group */
r = cg_create_and_attach(SYSTEMD_CGROUP_CONTROLLER, m->cgroup_hierarchy, 0);
/* 4. Realize the system slice and put us in there */
a = strappenda(m->cgroup_root, "/" SPECIAL_SYSTEM_SLICE);
r = cg_create_and_attach(SYSTEMD_CGROUP_CONTROLLER, a, 0);
if (r < 0) {
log_error("Failed to create root cgroup hierarchy: %s", strerror(-r));
return r;
@ -402,30 +397,24 @@ int manager_setup_cgroup(Manager *m) {
/* 6. Remove non-existing controllers from the default controllers list */
cg_shorten_controllers(m->default_controllers);
/* 7. Let's create the user and machine hierarchies
* right-away, so that people can inotify on them, if they
* wish, without this being racy. */
if (m->running_as == SYSTEMD_SYSTEM) {
cg_create(SYSTEMD_CGROUP_CONTROLLER, m->cgroup_hierarchy, "../user");
cg_create(SYSTEMD_CGROUP_CONTROLLER, m->cgroup_hierarchy, "../machine");
}
return 0;
}
void manager_shutdown_cgroup(Manager *m, bool delete) {
assert(m);
if (delete && m->cgroup_hierarchy)
cg_delete(SYSTEMD_CGROUP_CONTROLLER, m->cgroup_hierarchy);
/* We can't really delete the group, since we are in it. But
* let's trim it. */
if (delete && m->cgroup_root)
cg_trim(SYSTEMD_CGROUP_CONTROLLER, m->cgroup_root, false);
if (m->pin_cgroupfs_fd >= 0) {
close_nointr_nofail(m->pin_cgroupfs_fd);
m->pin_cgroupfs_fd = -1;
}
free(m->cgroup_hierarchy);
m->cgroup_hierarchy = NULL;
free(m->cgroup_root);
m->cgroup_root = NULL;
}
int cgroup_bonding_get(Manager *m, const char *cgroup, CGroupBonding **bonding) {

2
src/core/dbus-manager.c
View File

@ -301,7 +301,6 @@
" <property name=\"ConfirmSpawn\" type=\"b\" access=\"read\"/>\n" \
" <property name=\"ShowStatus\" type=\"b\" access=\"read\"/>\n" \
" <property name=\"UnitPath\" type=\"as\" access=\"read\"/>\n" \
" <property name=\"ControlGroupHierarchy\" type=\"s\" access=\"read\"/>\n" \
" <property name=\"DefaultControllers\" type=\"as\" access=\"read\"/>\n" \
" <property name=\"DefaultStandardOutput\" type=\"s\" access=\"read\"/>\n" \
" <property name=\"DefaultStandardError\" type=\"s\" access=\"read\"/>\n" \
@ -614,7 +613,6 @@ static const BusProperty bus_manager_properties[] = {
{ "ConfirmSpawn", bus_property_append_bool, "b", offsetof(Manager, confirm_spawn) },
{ "ShowStatus", bus_property_append_bool, "b", offsetof(Manager, show_status) },
{ "UnitPath", bus_property_append_strv, "as", offsetof(Manager, lookup_paths.unit_path), true },
{ "ControlGroupHierarchy", bus_property_append_string, "s", offsetof(Manager, cgroup_hierarchy), true },
{ "DefaultControllers", bus_property_append_strv, "as", offsetof(Manager, default_controllers), true },
{ "DefaultStandardOutput", bus_manager_append_exec_output, "s", offsetof(Manager, default_std_output) },
{ "DefaultStandardError", bus_manager_append_exec_output, "s", offsetof(Manager, default_std_error) },

5
src/core/dbus-unit.c
View File

@ -89,10 +89,7 @@ static int bus_unit_append_slice(DBusMessageIter *i, const char *property, void
assert(property);
assert(u);
if (UNIT_DEREF(u->slice))
d = UNIT_DEREF(u->slice)->id;
else
d = "";
d = strempty(unit_slice_name(u));
if (!dbus_message_iter_append_basic(i, DBUS_TYPE_STRING, &d))
return -ENOMEM;

2
src/core/manager.h
View File

@ -199,7 +199,7 @@ struct Manager {
/* Data specific to the cgroup subsystem */
Hashmap *cgroup_bondings; /* path string => CGroupBonding object 1:n */
char *cgroup_hierarchy;
char *cgroup_root;
usec_t gc_queue_timestamp;
int gc_marker;

2
src/core/service.c
View File

@ -220,7 +220,7 @@ static void service_close_socket_fd(Service *s) {
static void service_connection_unref(Service *s) {
assert(s);
if (!UNIT_DEREF(s->accept_socket))
if (!UNIT_ISSET(s->accept_socket))
return;
socket_connection_unref(SOCKET(UNIT_DEREF(s->accept_socket)));

4
src/core/socket.c
View File

@ -1005,7 +1005,7 @@ static int socket_open_fds(Socket *s) {
if ((r = socket_instantiate_service(s)) < 0)
return r;
if (UNIT_DEREF(s->service) &&
if (UNIT_ISSET(s->service) &&
SERVICE(UNIT_DEREF(s->service))->exec_command[SERVICE_EXEC_START]) {
r = label_get_create_label_from_exe(SERVICE(UNIT_DEREF(s->service))->exec_command[SERVICE_EXEC_START]->path, &label);
@ -1633,7 +1633,7 @@ static int socket_start(Unit *u) {
return 0;
/* Cannot run this without the service being around */
if (UNIT_DEREF(s->service)) {
if (UNIT_ISSET(s->service)) {
Service *service;
service = SERVICE(UNIT_DEREF(s->service));

4
src/core/special.h
View File

@ -114,5 +114,7 @@
#define SPECIAL_RUNLEVEL4_TARGET "runlevel4.target"
#define SPECIAL_RUNLEVEL5_TARGET "runlevel5.target"
/* Where we add all our system units by default */
/* Where we add all our system units, users and machines by default */
#define SPECIAL_SYSTEM_SLICE "system.slice"
#define SPECIAL_USER_SLICE "user.slice"
#define SPECIAL_MACHINE_SLICE "machine.slice"

28
src/core/unit-printf.c
View File

@ -27,6 +27,8 @@
#include "unit-name.h"
#include "unit-printf.h"
#include "macro.h"
#include "cgroup-util.h"
#include "special.h"
static char *specifier_prefix_and_instance(char specifier, void *data, void *userdata) {
Unit *u = userdata;
@ -86,22 +88,22 @@ static char *specifier_cgroup(char specifier, void *data, void *userdata) {
}
static char *specifier_cgroup_root(char specifier, void *data, void *userdata) {
_cleanup_free_ char *p = NULL;
Unit *u = userdata;
char *p;
const char *slice;
int r;
assert(u);
if (specifier == 'r')
return strdup(u->manager->cgroup_hierarchy);
slice = unit_slice_name(u);
if (specifier == 'R' || !slice)
return strdup(u->manager->cgroup_root);
if (path_get_parent(u->manager->cgroup_hierarchy, &p) < 0)
return strdup("");
r = cg_slice_to_path(slice, &p);
if (r < 0)
return NULL;
if (streq(p, "/")) {
free(p);
return strdup("");
}
return p;
return strjoin(u->manager->cgroup_root, "/", p, NULL);
}
static char *specifier_runtime(char specifier, void *data, void *userdata) {
@ -256,8 +258,8 @@ char *unit_full_printf(Unit *u, const char *format) {
*
* %f the the instance if set, otherwise the id
* %c cgroup path of unit
* %r root cgroup path of this systemd instance (e.g. "/user/lennart/shared/systemd-4711")
* %R parent of root cgroup path (e.g. "/usr/lennart/shared")
* %r where units in this slice are place in the cgroup tree
* %R the root of this systemd's instance tree
* %t the runtime directory to place sockets in (e.g. "/run" or $XDG_RUNTIME_DIR)
* %U the UID of the configured user or running user
* %u the username of the configured user or running user

27
src/core/unit.c
View File

@ -672,7 +672,8 @@ void unit_dump(Unit *u, FILE *f, const char *prefix) {
"%s\tActive Exit Timestamp: %s\n"
"%s\tInactive Enter Timestamp: %s\n"
"%s\tGC Check Good: %s\n"
"%s\tNeed Daemon Reload: %s\n",
"%s\tNeed Daemon Reload: %s\n"
"%s\tSlice: %s\n",
prefix, u->id,
prefix, unit_description(u),
prefix, strna(u->instance),
@ -683,7 +684,8 @@ void unit_dump(Unit *u, FILE *f, const char *prefix) {
prefix, strna(format_timestamp(timestamp3, sizeof(timestamp3), u->active_exit_timestamp.realtime)),
prefix, strna(format_timestamp(timestamp4, sizeof(timestamp4), u->inactive_enter_timestamp.realtime)),
prefix, yes_no(unit_check_gc(u)),
prefix, yes_no(unit_need_daemon_reload(u)));
prefix, yes_no(unit_need_daemon_reload(u)),
prefix, strna(unit_slice_name(u)));
SET_FOREACH(t, u->names, i)
fprintf(f, "%s\tName: %s\n", prefix, t);
@ -878,7 +880,7 @@ static int unit_add_default_dependencies(Unit *u) {
return r;
}
if (u->default_dependencies && UNIT_DEREF(u->slice)) {
if (u->default_dependencies && UNIT_ISSET(u->slice)) {
r = unit_add_two_dependencies(u, UNIT_AFTER, UNIT_WANTS, UNIT_DEREF(u->slice), true);
if (r < 0)
return r;
@ -1994,7 +1996,7 @@ char *unit_default_cgroup_path(Unit *u) {
assert(u);
if (UNIT_DEREF(u->slice)) {
if (UNIT_ISSET(u->slice)) {
r = cg_slice_to_path(UNIT_DEREF(u->slice)->id, &slice);
if (r < 0)
return NULL;
@ -2015,11 +2017,11 @@ char *unit_default_cgroup_path(Unit *u) {
if (!escaped_template)
return NULL;
return strjoin(u->manager->cgroup_hierarchy, "/",
return strjoin(u->manager->cgroup_root, "/",
slice ? slice : "", slice ? "/" : "",
escaped_template, "/", escaped_instance, NULL);
} else
return strjoin(u->manager->cgroup_hierarchy, "/",
return strjoin(u->manager->cgroup_root, "/",
slice ? slice : "", slice ? "/" : "",
escaped_instance, NULL);
}
@ -2172,7 +2174,7 @@ int unit_add_default_slice(Unit *u) {
assert(u);
if (UNIT_DEREF(u->slice))
if (UNIT_ISSET(u->slice))
return 0;
if (u->manager->running_as != SYSTEMD_SYSTEM)
@ -2186,6 +2188,15 @@ int unit_add_default_slice(Unit *u) {
return 0;
}
const char *unit_slice_name(Unit *u) {
assert(u);
if (!UNIT_ISSET(u->slice))
return NULL;
return UNIT_DEREF(u->slice)->id;
}
int unit_add_default_cgroups(Unit *u) {
CGroupAttribute *a;
char **c;
@ -2196,7 +2207,7 @@ int unit_add_default_cgroups(Unit *u) {
/* Adds in the default cgroups, if they weren't specified
* otherwise. */
if (!u->manager->cgroup_hierarchy)
if (!u->manager->cgroup_root)
return 0;
r = unit_add_one_default_cgroup(u, NULL);

3
src/core/unit.h
View File

@ -542,6 +542,8 @@ void unit_reset_failed(Unit *u);
Unit *unit_following(Unit *u);
const char *unit_slice_name(Unit *u);
bool unit_stop_pending(Unit *u) _pure_;
bool unit_inactive_or_pending(Unit *u) _pure_;
bool unit_active_or_pending(Unit *u);
@ -563,6 +565,7 @@ Unit* unit_ref_set(UnitRef *ref, Unit *u);
void unit_ref_unset(UnitRef *ref);
#define UNIT_DEREF(ref) ((ref).unit)
#define UNIT_ISSET(ref) (!!(ref).unit)
int unit_add_one_mount_link(Unit *u, Mount *m);
int unit_add_mount_links(Unit *u);

382
src/login/loginctl.c
View File

@ -261,6 +261,69 @@ static int list_seats(DBusConnection *bus, char **args, unsigned n) {
return 0;
}
static int list_machines(DBusConnection *bus, char **args, unsigned n) {
_cleanup_dbus_message_unref_ DBusMessage *reply = NULL;
DBusMessageIter iter, sub, sub2;
unsigned k = 0;
int r;
pager_open_if_enabled();
r = bus_method_call_with_reply (
bus,
"org.freedesktop.login1",
"/org/freedesktop/login1",
"org.freedesktop.login1.Manager",
"ListMachines",
&reply,
NULL,
DBUS_TYPE_INVALID);
if (r)
return r;
if (!dbus_message_iter_init(reply, &iter) ||
dbus_message_iter_get_arg_type(&iter) != DBUS_TYPE_ARRAY ||
dbus_message_iter_get_element_type(&iter) != DBUS_TYPE_STRUCT) {
log_error("Failed to parse reply.");
return -EIO;
}
dbus_message_iter_recurse(&iter, &sub);
if (on_tty())
printf("%-32s %-9s %-16s\n", "MACHINE", "CONTAINER", "SERVICE");
while (dbus_message_iter_get_arg_type(&sub) != DBUS_TYPE_INVALID) {
const char *name, *class, *service, *object;
if (dbus_message_iter_get_arg_type(&sub) != DBUS_TYPE_STRUCT) {
log_error("Failed to parse reply.");
return -EIO;
}
dbus_message_iter_recurse(&sub, &sub2);
if (bus_iter_get_basic_and_next(&sub2, DBUS_TYPE_STRING, &name, true) < 0 ||
bus_iter_get_basic_and_next(&sub2, DBUS_TYPE_STRING, &class, true) < 0 ||
bus_iter_get_basic_and_next(&sub2, DBUS_TYPE_STRING, &service, true) < 0 ||
bus_iter_get_basic_and_next(&sub2, DBUS_TYPE_OBJECT_PATH, &object, false) < 0) {
log_error("Failed to parse reply.");
return -EIO;
}
printf("%-32s %-9s %-16s\n", name, class, service);
k++;
dbus_message_iter_next(&sub);
}
if (on_tty())
printf("\n%u machines listed.\n", k);
return 0;
}
typedef struct SessionStatusInfo {
const char *id;
uid_t uid;
@ -279,6 +342,7 @@ typedef struct SessionStatusInfo {
const char *type;
const char *class;
const char *state;
const char *slice;
} SessionStatusInfo;
typedef struct UserStatusInfo {
@ -289,6 +353,7 @@ typedef struct UserStatusInfo {
const char *state;
char **sessions;
const char *display;
const char *slice;
} UserStatusInfo;
typedef struct SeatStatusInfo {
@ -297,6 +362,18 @@ typedef struct SeatStatusInfo {
char **sessions;
} SeatStatusInfo;
typedef struct MachineStatusInfo {
const char *name;
sd_id128_t id;
const char *default_control_group;
const char *class;
const char *service;
const char *slice;
const char *root_directory;
pid_t leader;
usec_t timestamp;
} MachineStatusInfo;
static void print_session_status_info(SessionStatusInfo *i) {
char since1[FORMAT_TIMESTAMP_RELATIVE_MAX], *s1;
char since2[FORMAT_TIMESTAMP_MAX], *s2;
@ -318,15 +395,13 @@ static void print_session_status_info(SessionStatusInfo *i) {
printf("\t Since: %s\n", s2);
if (i->leader > 0) {
char *t = NULL;
_cleanup_free_ char *t = NULL;
printf("\t Leader: %u", (unsigned) i->leader);
get_process_comm(i->leader, &t);
if (t) {
if (t)
printf(" (%s)", t);
free(t);
}
printf("\n");
}
@ -375,6 +450,9 @@ static void print_session_status_info(SessionStatusInfo *i) {
if (i->state)
printf("\t State: %s\n", i->state);
if (i->slice)
printf("\t Slice: %s\n", i->slice);
if (i->default_control_group) {
unsigned c;
int output_flags =
@ -419,6 +497,9 @@ static void print_user_status_info(UserStatusInfo *i) {
if (!isempty(i->state))
printf("\t State: %s\n", i->state);
if (i->slice)
printf("\t Slice: %s\n", i->slice);
if (!strv_isempty(i->sessions)) {
char **l;
printf("\tSessions:");
@ -488,6 +569,76 @@ static void print_seat_status_info(SeatStatusInfo *i) {
}
}
static void print_machine_status_info(MachineStatusInfo *i) {
char since1[FORMAT_TIMESTAMP_RELATIVE_MAX], *s1;
char since2[FORMAT_TIMESTAMP_MAX], *s2;
assert(i);
fputs(strna(i->name), stdout);
if (!sd_id128_equal(i->id, SD_ID128_NULL))
printf("(" SD_ID128_FORMAT_STR ")\n", SD_ID128_FORMAT_VAL(i->id));
else
putchar('\n');
s1 = format_timestamp_relative(since1, sizeof(since1), i->timestamp);
s2 = format_timestamp(since2, sizeof(since2), i->timestamp);
if (s1)
printf("\t Since: %s; %s\n", s2, s1);
else if (s2)
printf("\t Since: %s\n", s2);
if (i->leader > 0) {
_cleanup_free_ char *t = NULL;
printf("\t Leader: %u", (unsigned) i->leader);
get_process_comm(i->leader, &t);
if (t)
printf(" (%s)", t);
putchar('\n');
}
if (i->service) {
printf("\t Service: %s", i->service);
if (i->class)
printf("; class %s", i->class);
putchar('\n');
} else if (i->class)
printf("\t Class: %s\n", i->class);
if (i->slice)
printf("\t Slice: %s\n", i->slice);
if (i->root_directory)
printf("\t Root: %s\n", i->root_directory);
if (i->default_control_group) {
unsigned c;
int output_flags =
arg_all * OUTPUT_SHOW_ALL |
arg_full * OUTPUT_FULL_WIDTH;
printf("\t CGroup: %s\n", i->default_control_group);
if (arg_transport != TRANSPORT_SSH) {
c = columns();
if (c > 18)
c -= 18;
else
c = 0;
show_cgroup_and_extra_by_spec(i->default_control_group,
"\t\t ", c, false, &i->leader,
i->leader > 0 ? 1 : 0,
output_flags);
}
}
}
static int status_property_session(const char *name, DBusMessageIter *iter, SessionStatusInfo *i) {
assert(name);
assert(iter);
@ -521,6 +672,8 @@ static int status_property_session(const char *name, DBusMessageIter *iter, Sess
i->type = s;
else if (streq(name, "Class"))
i->class = s;
else if (streq(name, "Slice"))
i->slice = s;
else if (streq(name, "State"))
i->state = s;
}
@ -606,6 +759,8 @@ static int status_property_user(const char *name, DBusMessageIter *iter, UserSta
i->name = s;
else if (streq(name, "DefaultControlGroup"))
i->default_control_group = s;
else if (streq(name, "Slice"))
i->slice = s;
else if (streq(name, "State"))
i->state = s;
}
@ -757,6 +912,80 @@ static int status_property_seat(const char *name, DBusMessageIter *iter, SeatSta
return 0;
}
static int status_property_machine(const char *name, DBusMessageIter *iter, MachineStatusInfo *i) {
assert(name);
assert(iter);
assert(i);
switch (dbus_message_iter_get_arg_type(iter)) {
case DBUS_TYPE_STRING: {
const char *s;
dbus_message_iter_get_basic(iter, &s);
if (!isempty(s)) {
if (streq(name, "Name"))
i->name = s;
else if (streq(name, "DefaultControlGroup"))
i->default_control_group = s;
else if (streq(name, "Class"))
i->class = s;
else if (streq(name, "Service"))
i->service = s;
else if (streq(name, "Slice"))
i->slice = s;
else if (streq(name, "RootDirectory"))
i->root_directory = s;
}
break;
}
case DBUS_TYPE_UINT32: {
uint32_t u;
dbus_message_iter_get_basic(iter, &u);
if (streq(name, "Leader"))
i->leader = (pid_t) u;
break;
}
case DBUS_TYPE_UINT64: {
uint64_t u;
dbus_message_iter_get_basic(iter, &u);
if (streq(name, "Timestamp"))
i->timestamp = (usec_t) u;
break;
}
case DBUS_TYPE_ARRAY: {
DBusMessageIter sub;
dbus_message_iter_recurse(iter, &sub);
if (dbus_message_iter_get_arg_type(&sub) == DBUS_TYPE_BYTE && streq(name, "Id")) {
void *v;
int n;
dbus_message_iter_get_fixed_array(&sub, &v, &n);
if (n == 0)
i->id = SD_ID128_NULL;
else if (n == 16)
memcpy(&i->id, v, n);
}
break;
}
}
return 0;
}
static int print_property(const char *name, DBusMessageIter *iter) {
assert(name);
assert(iter);
@ -838,6 +1067,7 @@ static int show_one(const char *verb, DBusConnection *bus, const char *path, boo
SessionStatusInfo session_info = {};
UserStatusInfo user_info = {};
SeatStatusInfo seat_info = {};
MachineStatusInfo machine_info = {};
assert(path);
assert(new_line);
@ -901,8 +1131,10 @@ static int show_one(const char *verb, DBusConnection *bus, const char *path, boo
r = status_property_session(name, &sub3, &session_info);
else if (strstr(verb, "user"))
r = status_property_user(name, &sub3, &user_info);
else
else if (strstr(verb, "seat"))
r = status_property_seat(name, &sub3, &seat_info);
else
r = status_property_machine(name, &sub3, &machine_info);
if (r < 0) {
log_error("Failed to parse reply.");
@ -917,8 +1149,10 @@ static int show_one(const char *verb, DBusConnection *bus, const char *path, boo
print_session_status_info(&session_info);
else if (strstr(verb, "user"))
print_user_status_info(&user_info);
else
else if (strstr(verb, "seat"))
print_seat_status_info(&seat_info);
else
print_machine_status_info(&machine_info);
}
r = 0;
@ -981,7 +1215,7 @@ static int show(DBusConnection *bus, char **args, unsigned n) {
}
u = (uint32_t) uid;
ret = bus_method_call_with_reply (
ret = bus_method_call_with_reply(
bus,
"org.freedesktop.login1",
"/org/freedesktop/login1",
@ -991,9 +1225,10 @@ static int show(DBusConnection *bus, char **args, unsigned n) {
NULL,
DBUS_TYPE_UINT32, &u,
DBUS_TYPE_INVALID);
} else {
ret = bus_method_call_with_reply (
} else if (strstr(args[0], "seat")) {
ret = bus_method_call_with_reply(
bus,
"org.freedesktop.login1",
"/org/freedesktop/login1",
@ -1003,8 +1238,22 @@ static int show(DBusConnection *bus, char **args, unsigned n) {
NULL,
DBUS_TYPE_STRING, &args[i],
DBUS_TYPE_INVALID);
} else {
ret = bus_method_call_with_reply(
bus,
"org.freedesktop.login1",
"/org/freedesktop/login1",
"org.freedesktop.login1.Manager",
"GetMachine",
&reply,
NULL,
DBUS_TYPE_STRING, &args[i],
DBUS_TYPE_INVALID);
}
if (ret)
if (ret < 0)
goto finish;
if (!dbus_message_get_args(reply, &error,
@ -1085,6 +1334,36 @@ static int kill_session(DBusConnection *bus, char **args, unsigned n) {
return 0;
}
static int kill_machine(DBusConnection *bus, char **args, unsigned n) {
unsigned i;
assert(args);
if (!arg_kill_who)
arg_kill_who = "all";
for (i = 1; i < n; i++) {
int r;
r = bus_method_call_with_reply (
bus,
"org.freedesktop.login1",
"/org/freedesktop/login1",
"org.freedesktop.login1.Manager",
"KillMachine",
NULL,
NULL,
DBUS_TYPE_STRING, &args[i],
DBUS_TYPE_STRING, &arg_kill_who,
DBUS_TYPE_INT32, &arg_signal,
DBUS_TYPE_INVALID);
if (r)
return r;
}
return 0;
}
static int enable_linger(DBusConnection *bus, char **args, unsigned n) {
unsigned i;
dbus_bool_t b, interactive = true;
@ -1288,6 +1567,31 @@ static int terminate_seat(DBusConnection *bus, char **args, unsigned n) {
return 0;
}
static int terminate_machine(DBusConnection *bus, char **args, unsigned n) {
unsigned i;
assert(args);
for (i = 1; i < n; i++) {
int r;
r = bus_method_call_with_reply (
bus,
"org.freedesktop.login1",
"/org/freedesktop/login1",
"org.freedesktop.login1.Manager",
"TerminateMachine",
NULL,
NULL,
DBUS_TYPE_STRING, &args[i],
DBUS_TYPE_INVALID);
if (r)
return r;
}
return 0;
}
static int help(void) {
printf("%s [OPTIONS...] {COMMAND} ...\n\n"
@ -1326,7 +1630,12 @@ static int help(void) {
" show-seat [NAME...] Show properties of one or more seats\n"
" attach [NAME] [DEVICE...] Attach one or more devices to a seat\n"
" flush-devices Flush all device associations\n"
" terminate-seat [NAME...] Terminate all sessions on one or more seats\n",
" terminate-seat [NAME...] Terminate all sessions on one or more seats\n"
" list-machines List running VMs and containers\n"
" machine-status [NAME...] Show VM/container status\n"
" show-machine [NAME...] Show properties of one or more VMs/containers\n"
" terminate-machine [NAME...] Terminate one or more VMs/containers\n"
" kill-machine [NAME...] Send signal to processes of a VM/container\n",
program_invocation_short_name);
return 0;
@ -1452,29 +1761,34 @@ static int loginctl_main(DBusConnection *bus, int argc, char *argv[], DBusError
const int argc;
int (* const dispatch)(DBusConnection *bus, char **args, unsigned n);
} verbs[] = {
{ "list-sessions", LESS, 1, list_sessions },
{ "session-status", MORE, 2, show },
{ "show-session", MORE, 1, show },
{ "activate", EQUAL, 2, activate },
{ "lock-session", MORE, 2, activate },
{ "unlock-session", MORE, 2, activate },
{ "lock-sessions", EQUAL, 1, lock_sessions },
{ "unlock-sessions", EQUAL, 1, lock_sessions },
{ "terminate-session", MORE, 2, activate },
{ "kill-session", MORE, 2, kill_session },
{ "list-users", EQUAL, 1, list_users },
{ "user-status", MORE, 2, show },
{ "show-user", MORE, 1, show },
{ "enable-linger", MORE, 2, enable_linger },
{ "disable-linger", MORE, 2, enable_linger },
{ "terminate-user", MORE, 2, terminate_user },
{ "kill-user", MORE, 2, kill_user },
{ "list-seats", EQUAL, 1, list_seats },
{ "seat-status", MORE, 2, show },
{ "show-seat", MORE, 1, show },
{ "attach", MORE, 3, attach },
{ "flush-devices", EQUAL, 1, flush_devices },
{ "terminate-seat", MORE, 2, terminate_seat },
{ "list-sessions", LESS, 1, list_sessions },
{ "session-status", MORE, 2, show },
{ "show-session", MORE, 1, show },
{ "activate", EQUAL, 2, activate },
{ "lock-session", MORE, 2, activate },
{ "unlock-session", MORE, 2, activate },
{ "lock-sessions", EQUAL, 1, lock_sessions },
{ "unlock-sessions", EQUAL, 1, lock_sessions },
{ "terminate-session", MORE, 2, activate },
{ "kill-session", MORE, 2, kill_session },
{ "list-users", EQUAL, 1, list_users },
{ "user-status", MORE, 2, show },
{ "show-user", MORE, 1, show },
{ "enable-linger", MORE, 2, enable_linger },
{ "disable-linger", MORE, 2, enable_linger },
{ "terminate-user", MORE, 2, terminate_user },
{ "kill-user", MORE, 2, kill_user },
{ "list-seats", EQUAL, 1, list_seats },
{ "seat-status", MORE, 2, show },
{ "show-seat", MORE, 1, show },
{ "attach", MORE, 3, attach },
{ "flush-devices", EQUAL, 1, flush_devices },
{ "terminate-seat", MORE, 2, terminate_seat },
{ "list-machines", EQUAL, 1, list_machines },
{ "machine-status", MORE, 2, show },
{ "show-machine", MORE, 1, show },
{ "terminate-machine", MORE, 2, terminate_machine },
{ "kill-machine", MORE, 2, kill_machine },
};
int left;

449
src/login/logind-dbus.c
View File

@ -36,6 +36,8 @@
#include "systemd/sd-messages.h"
#include "fileio-label.h"
#include "label.h"
#include "utf8.h"
#include "unit-name.h"
#define BUS_MANAGER_INTERFACE \
" <interface name=\"org.freedesktop.login1.Manager\">\n" \
@ -51,10 +53,22 @@
" <arg name=\"uid\" type=\"u\" direction=\"in\"/>\n" \
" <arg name=\"user\" type=\"o\" direction=\"out\"/>\n" \
" </method>\n" \
" <method name=\"GetUserByPID\">\n" \
" <arg name=\"pid\" type=\"u\" direction=\"in\"/>\n" \
" <arg name=\"user\" type=\"o\" direction=\"out\"/>\n" \
" </method>\n" \
" <method name=\"GetSeat\">\n" \
" <arg name=\"id\" type=\"s\" direction=\"in\"/>\n" \
" <arg name=\"seat\" type=\"o\" direction=\"out\"/>\n" \
" </method>\n" \
" <method name=\"GetMachine\">\n" \
" <arg name=\"name\" type=\"s\" direction=\"in\"/>\n" \
" <arg name=\"machine\" type=\"o\" direction=\"out\"/>\n" \
" </method>\n" \
" <method name=\"GetMachineByPID\">\n" \
" <arg name=\"pid\" type=\"u\" direction=\"in\"/>\n" \
" <arg name=\"machine\" type=\"o\" direction=\"out\"/>\n" \
" </method>\n" \
" <method name=\"ListSessions\">\n" \
" <arg name=\"sessions\" type=\"a(susso)\" direction=\"out\"/>\n" \
" </method>\n" \
@ -64,6 +78,9 @@
" <method name=\"ListSeats\">\n" \
" <arg name=\"seats\" type=\"a(so)\" direction=\"out\"/>\n" \
" </method>\n" \
" <method name=\"ListMachines\">\n" \
" <arg name=\"machines\" type=\"a(ssso)\" direction=\"out\"/>\n" \
" </method>\n" \
" <method name=\"CreateSession\">\n" \
" <arg name=\"uid\" type=\"u\" direction=\"in\"/>\n" \
" <arg name=\"leader\" type=\"u\" direction=\"in\"/>\n" \
@ -91,6 +108,16 @@
" <method name=\"ReleaseSession\">\n" \
" <arg name=\"id\" type=\"s\" direction=\"in\"/>\n" \
" </method>\n" \
" <method name=\"CreateMachine\">\n" \
" <arg name=\"name\" type=\"s\" direction=\"in\"/>\n" \
" <arg name=\"id\" type=\"ay\" direction=\"in\"/>\n" \
" <arg name=\"service\" type=\"s\" direction=\"in\"/>\n" \
" <arg name=\"class\" type=\"s\" direction=\"in\"/>\n" \
" <arg name=\"leader\" type=\"u\" direction=\"in\"/>\n" \
" <arg name=\"slice\" type=\"s\" direction=\"in\"/>\n" \
" <arg name=\"root_directory\" type=\"s\" direction=\"in\"/>\n" \
" <arg name=\"path\" type=\"o\" direction=\"out\"/>\n" \
" </method>\n" \
" <method name=\"ActivateSession\">\n" \
" <arg name=\"id\" type=\"s\" direction=\"in\"/>\n" \
" </method>\n" \
@ -124,6 +151,9 @@
" <method name=\"TerminateSeat\">\n" \
" <arg name=\"id\" type=\"s\" direction=\"in\"/>\n" \
" </method>\n" \
" <method name=\"TerminateMachine\">\n" \
" <arg name=\"id\" type=\"s\" direction=\"in\"/>\n" \
" </method>\n" \
" <method name=\"SetUserLinger\">\n" \
" <arg name=\"uid\" type=\"u\" direction=\"in\"/>\n" \
" <arg name=\"b\" type=\"b\" direction=\"in\"/>\n" \
@ -201,13 +231,20 @@
" <arg name=\"id\" type=\"s\"/>\n" \
" <arg name=\"path\" type=\"o\"/>\n" \
" </signal>\n" \
" <signal name=\"MachineNew\">\n" \
" <arg name=\"machine\" type=\"s\"/>\n" \
" <arg name=\"path\" type=\"o\"/>\n" \
" </signal>\n" \
" <signal name=\"MachineRemoved\">\n" \
" <arg name=\"machine\" type=\"s\"/>\n" \
" <arg name=\"path\" type=\"o\"/>\n" \
" </signal>\n" \
" <signal name=\"PrepareForShutdown\">\n" \
" <arg name=\"active\" type=\"b\"/>\n" \
" </signal>\n" \
" <signal name=\"PrepareForSleep\">\n" \
" <arg name=\"active\" type=\"b\"/>\n" \
" </signal>\n" \
" <property name=\"ControlGroupHierarchy\" type=\"s\" access=\"read\"/>\n" \
" <property name=\"Controllers\" type=\"as\" access=\"read\"/>\n" \
" <property name=\"ResetControllers\" type=\"as\" access=\"read\"/>\n" \
" <property name=\"NAutoVTs\" type=\"u\" access=\"read\"/>\n" \
@ -342,8 +379,7 @@ static int bus_manager_create_session(Manager *m, DBusMessage *message, DBusMess
dbus_message_iter_get_basic(&iter, &leader);
if (leader <= 0 ||
!dbus_message_iter_next(&iter) ||
if (!dbus_message_iter_next(&iter) ||
dbus_message_iter_get_arg_type(&iter) != DBUS_TYPE_STRING)
return -EINVAL;
@ -507,6 +543,12 @@ static int bus_manager_create_session(Manager *m, DBusMessage *message, DBusMess
dbus_message_iter_get_basic(&iter, &kill_processes);
if (leader <= 0) {
leader = bus_get_unix_process_id(m->bus, dbus_message_get_sender(message), NULL);
if (leader == 0)
return -EINVAL;
}
r = cg_pid_get_path(SYSTEMD_CGROUP_CONTROLLER, leader, &cgroup);
if (r < 0)
goto fail;
@ -601,10 +643,12 @@ static int bus_manager_create_session(Manager *m, DBusMessage *message, DBusMess
if (r < 0)
goto fail;
r = manager_add_session(m, user, id, &session);
r = manager_add_session(m, id, &session);
if (r < 0)
goto fail;
session_set_user(session, user);
session->leader = leader;
session->audit_id = audit_id;
session->type = t;
@ -718,6 +762,183 @@ fail:
return r;
}
static bool valid_machine_name(const char *p) {
size_t l;
if (!filename_is_safe(p))
return false;
if (!ascii_is_valid(p))
return false;
l = strlen(p);
if (l < 1 || l> 64)
return false;
return true;
}
static int bus_manager_create_machine(
Manager *manager,
DBusMessage *message,
DBusMessage **_reply) {
const char *name, *service, *class, *slice, *root_directory;
_cleanup_dbus_message_unref_ DBusMessage *reply = NULL;
_cleanup_free_ char *p = NULL;
DBusMessageIter iter, sub;
MachineClass c;
uint32_t leader;
sd_id128_t id;
dbus_bool_t b;
Machine *m;
int n, r;
void *v;
assert(manager);
assert(message);
assert(_reply);
if (!dbus_message_iter_init(message, &iter) ||
dbus_message_iter_get_arg_type(&iter) != DBUS_TYPE_STRING)
return -EINVAL;
dbus_message_iter_get_basic(&iter, &name);
if (!valid_machine_name(name) ||
!dbus_message_iter_next(&iter) ||
dbus_message_iter_get_arg_type(&iter) != DBUS_TYPE_ARRAY ||
dbus_message_iter_get_element_type(&iter) != DBUS_TYPE_BYTE)
return -EINVAL;
dbus_message_iter_recurse(&iter, &sub);
dbus_message_iter_get_fixed_array(&sub, &v, &n);
if (n == 0)
id = SD_ID128_NULL;
else if (n == 16)
memcpy(&id, v, n);
else
return -EINVAL;
if (!dbus_message_iter_next(&iter) ||
dbus_message_iter_get_arg_type(&iter) != DBUS_TYPE_STRING)
return -EINVAL;
dbus_message_iter_get_basic(&iter, &service);
if (!dbus_message_iter_next(&iter) ||
dbus_message_iter_get_arg_type(&iter) != DBUS_TYPE_STRING)
return -EINVAL;
dbus_message_iter_get_basic(&iter, &class);
if (isempty(class))
c = _MACHINE_CLASS_INVALID;
else {
c = machine_class_from_string(class);
if (c < 0)
return -EINVAL;
}
if (!dbus_message_iter_next(&iter) ||
dbus_message_iter_get_arg_type(&iter) != DBUS_TYPE_UINT32)
return -EINVAL;
dbus_message_iter_get_basic(&iter, &leader);
if (!dbus_message_iter_next(&iter) ||
dbus_message_iter_get_arg_type(&iter) != DBUS_TYPE_STRING)
return -EINVAL;
dbus_message_iter_get_basic(&iter, &slice);
if (!(isempty(slice) || (unit_name_is_valid(slice, false) && endswith(slice, ".slice"))) ||
!dbus_message_iter_next(&iter) ||
dbus_message_iter_get_arg_type(&iter) != DBUS_TYPE_STRING)
return -EINVAL;
dbus_message_iter_get_basic(&iter, &root_directory);
if (!(isempty(root_directory) || path_is_absolute(root_directory)))
return -EINVAL;
if (hashmap_get(manager->machines, name))
return -EEXIST;
if (leader <= 0) {
leader = bus_get_unix_process_id(manager->bus, dbus_message_get_sender(message), NULL);
if (leader == 0)
return -EINVAL;
}
r = manager_add_machine(manager, name, &m);
if (r < 0)
goto fail;
m->leader = leader;
m->class = c;
m->id = id;
if (!isempty(service)) {
m->service = strdup(service);
if (!m->service) {
r = -ENOMEM;
goto fail;
}
}
if (!isempty(slice)) {
m->slice = strdup(slice);
if (!m->slice) {
r = -ENOMEM;
goto fail;
}
}
if (!isempty(root_directory)) {
m->root_directory = strdup(root_directory);
if (!m->root_directory) {
r = -ENOMEM;
goto fail;
}
}
r = machine_start(m);
if (r < 0)
goto fail;
reply = dbus_message_new_method_return(message);
if (!reply) {
r = -ENOMEM;
goto fail;
}
p = machine_bus_path(m);
if (!p) {
r = -ENOMEM;
goto fail;
}
b = dbus_message_append_args(
reply,
DBUS_TYPE_OBJECT_PATH, &p,
DBUS_TYPE_INVALID);
if (!b) {
r = -ENOMEM;
goto fail;
}
*_reply = reply;
reply = NULL;
return 0;
fail:
if (m)
machine_add_to_gc_queue(m);
return r;
}
static int bus_manager_inhibit(
Manager *m,
DBusConnection *connection,
@ -1387,7 +1608,6 @@ static int bus_manager_do_shutdown_or_sleep(
static DEFINE_BUS_PROPERTY_APPEND_ENUM(bus_manager_append_handle_action, handle_action, HandleAction);
static const BusProperty bus_login_manager_properties[] = {
{ "ControlGroupHierarchy", bus_property_append_string, "s", offsetof(Manager, cgroup_path), true },
{ "Controllers", bus_property_append_strv, "as", offsetof(Manager, controllers), true },
{ "ResetControllers", bus_property_append_strv, "as", offsetof(Manager, reset_controllers), true },
{ "NAutoVTs", bus_property_append_unsigned, "u", offsetof(Manager, n_autovts) },
@ -1530,6 +1750,107 @@ static DBusHandlerResult manager_message_handler(
if (!b)
goto oom;
} else if (dbus_message_is_method_call(message, "org.freedesktop.login1.Manager", "GetUserByPID")) {
uint32_t pid;
char *p;
User *user;
bool b;
if (!dbus_message_get_args(
message,
&error,
DBUS_TYPE_UINT32, &pid,
DBUS_TYPE_INVALID))
return bus_send_error_reply(connection, message, &error, -EINVAL);
r = manager_get_user_by_pid(m, pid, &user);
if (r <= 0)
return bus_send_error_reply(connection, message, NULL, r < 0 ? r : -ENOENT);
reply = dbus_message_new_method_return(message);
if (!reply)
goto oom;
p = user_bus_path(user);
if (!p)
goto oom;
b = dbus_message_append_args(
reply,
DBUS_TYPE_OBJECT_PATH, &p,
DBUS_TYPE_INVALID);
free(p);
if (!b)
goto oom;
} else if (dbus_message_is_method_call(message, "org.freedesktop.login1.Manager", "GetMachine")) {
Machine *machine;
const char *name;
char *p;
bool b;
if (!dbus_message_get_args(
message,
&error,
DBUS_TYPE_STRING, &name,
DBUS_TYPE_INVALID))
return bus_send_error_reply(connection, message, &error, -EINVAL);
machine = hashmap_get(m->machines, name);
if (!machine)
return bus_send_error_reply(connection, message, &error, -ENOENT);
reply = dbus_message_new_method_return(message);
if (!reply)
goto oom;
p = machine_bus_path(machine);
if (!p)
goto oom;
b = dbus_message_append_args(
reply,
DBUS_TYPE_OBJECT_PATH, &p,
DBUS_TYPE_INVALID);
free(p);
if (!b)
goto oom;
} else if (dbus_message_is_method_call(message, "org.freedesktop.login1.Manager", "GetMachineByPID")) {
uint32_t pid;
char *p;
Machine *machine;
bool b;
if (!dbus_message_get_args(
message,
&error,
DBUS_TYPE_UINT32, &pid,
DBUS_TYPE_INVALID))
return bus_send_error_reply(connection, message, &error, -EINVAL);
r = manager_get_machine_by_pid(m, pid, &machine);
if (r <= 0)
return bus_send_error_reply(connection, message, NULL, r < 0 ? r : -ENOENT);
reply = dbus_message_new_method_return(message);
if (!reply)
goto oom;
p = machine_bus_path(machine);
if (!p)
goto oom;
b = dbus_message_append_args(
reply,
DBUS_TYPE_OBJECT_PATH, &p,
DBUS_TYPE_INVALID);
free(p);
if (!b)
goto oom;
} else if (dbus_message_is_method_call(message, "org.freedesktop.login1.Manager", "GetSeat")) {
const char *name;
char *p;
@ -1612,7 +1933,6 @@ static DBusHandlerResult manager_message_handler(
goto oom;
} else if (dbus_message_is_method_call(message, "org.freedesktop.login1.Manager", "ListUsers")) {
char *p;
User *user;
Iterator i;
DBusMessageIter iter, sub;
@ -1627,6 +1947,7 @@ static DBusHandlerResult manager_message_handler(
goto oom;
HASHMAP_FOREACH(user, m->users, i) {
_cleanup_free_ char *p = NULL;
DBusMessageIter sub2;
uint32_t uid;
@ -1646,8 +1967,6 @@ static DBusHandlerResult manager_message_handler(
goto oom;
}
free(p);
if (!dbus_message_iter_close_container(&sub, &sub2))
goto oom;
}
@ -1656,7 +1975,6 @@ static DBusHandlerResult manager_message_handler(
goto oom;
} else if (dbus_message_is_method_call(message, "org.freedesktop.login1.Manager", "ListSeats")) {
char *p;
Seat *seat;
Iterator i;
DBusMessageIter iter, sub;
@ -1671,6 +1989,7 @@ static DBusHandlerResult manager_message_handler(
goto oom;
HASHMAP_FOREACH(seat, m->seats, i) {
_cleanup_free_ char *p = NULL;
DBusMessageIter sub2;
if (!dbus_message_iter_open_container(&sub, DBUS_TYPE_STRUCT, NULL, &sub2))
@ -1686,8 +2005,6 @@ static DBusHandlerResult manager_message_handler(
goto oom;
}
free(p);
if (!dbus_message_iter_close_container(&sub, &sub2))
goto oom;
}
@ -1739,6 +2056,49 @@ static DBusHandlerResult manager_message_handler(
if (!dbus_message_iter_close_container(&iter, &sub))
goto oom;
} else if (dbus_message_is_method_call(message, "org.freedesktop.login1.Manager", "ListMachines")) {
Machine *machine;
Iterator i;
DBusMessageIter iter, sub;
reply = dbus_message_new_method_return(message);
if (!reply)
goto oom;
dbus_message_iter_init_append(reply, &iter);
if (!dbus_message_iter_open_container(&iter, DBUS_TYPE_ARRAY, "(ssso)", &sub))
goto oom;
HASHMAP_FOREACH(machine, m->machines, i) {
_cleanup_free_ char *p = NULL;
DBusMessageIter sub2;
const char *class;
if (!dbus_message_iter_open_container(&sub, DBUS_TYPE_STRUCT, NULL, &sub2))
goto oom;
p = machine_bus_path(machine);
if (!p)
goto oom;
class = strempty(machine_class_to_string(machine->class));
if (!dbus_message_iter_append_basic(&sub2, DBUS_TYPE_STRING, &machine->name) ||
!dbus_message_iter_append_basic(&sub2, DBUS_TYPE_STRING, &class) ||
!dbus_message_iter_append_basic(&sub2, DBUS_TYPE_STRING, &machine->service) ||
!dbus_message_iter_append_basic(&sub2, DBUS_TYPE_OBJECT_PATH, &p)) {
free(p);
goto oom;
}
if (!dbus_message_iter_close_container(&sub, &sub2))
goto oom;
}
if (!dbus_message_iter_close_container(&iter, &sub))
goto oom;
} else if (dbus_message_is_method_call(message, "org.freedesktop.login1.Manager", "Inhibit")) {
r = bus_manager_inhibit(m, connection, message, &error, &reply);
@ -1758,6 +2118,11 @@ static DBusHandlerResult manager_message_handler(
if (r < 0)
return bus_send_error_reply(connection, message, NULL, r);
} else if (dbus_message_is_method_call(message, "org.freedesktop.login1.Manager", "CreateMachine")) {
r = bus_manager_create_machine(m, message, &reply);
if (r < 0)
return bus_send_error_reply(connection, message, NULL, r);
} else if (dbus_message_is_method_call(message, "org.freedesktop.login1.Manager", "ReleaseSession")) {
const char *name;
@ -1945,6 +2310,45 @@ static DBusHandlerResult manager_message_handler(
if (!reply)
goto oom;
} else if (dbus_message_is_method_call(message, "org.freedesktop.login1.Manager", "KillMachine")) {
const char *swho;
int32_t signo;
KillWho who;
const char *name;
Machine *machine;
if (!dbus_message_get_args(
message,
&error,
DBUS_TYPE_STRING, &name,
DBUS_TYPE_STRING, &swho,
DBUS_TYPE_INT32, &signo,
DBUS_TYPE_INVALID))
return bus_send_error_reply(connection, message, &error, -EINVAL);
if (isempty(swho))
who = KILL_ALL;
else {
who = kill_who_from_string(swho);
if (who < 0)
return bus_send_error_reply(connection, message, &error, -EINVAL);
}
if (signo <= 0 || signo >= _NSIG)
return bus_send_error_reply(connection, message, &error, -EINVAL);
machine = hashmap_get(m->machines, name);
if (!machine)
return bus_send_error_reply(connection, message, &error, -ENOENT);
r = machine_kill(machine, who, signo);
if (r < 0)
return bus_send_error_reply(connection, message, NULL, r);
reply = dbus_message_new_method_return(message);
if (!reply)
goto oom;
} else if (dbus_message_is_method_call(message, "org.freedesktop.login1.Manager", "TerminateSession")) {
const char *name;
Session *session;
@ -2014,6 +2418,29 @@ static DBusHandlerResult manager_message_handler(
if (!reply)
goto oom;
} else if (dbus_message_is_method_call(message, "org.freedesktop.login1.Manager", "TerminateMachine")) {
const char *name;
Machine *machine;
if (!dbus_message_get_args(
message,
&error,
DBUS_TYPE_STRING, &name,
DBUS_TYPE_INVALID))
return bus_send_error_reply(connection, message, &error, -EINVAL);
machine = hashmap_get(m->machines, name);
if (!machine)
return bus_send_error_reply(connection, message, &error, -ENOENT);
r = machine_stop(machine);
if (r < 0)
return bus_send_error_reply(connection, message, NULL, r);
reply = dbus_message_new_method_return(message);
if (!reply)
goto oom;
} else if (dbus_message_is_method_call(message, "org.freedesktop.login1.Manager", "SetUserLinger")) {
uint32_t uid;
struct passwd *pw;

315
src/login/logind-machine-dbus.c Normal file
View File

@ -0,0 +1,315 @@
/*-*- Mode: C; c-basic-offset: 8; indent-tabs-mode: nil -*-*/
/***
This file is part of systemd.
Copyright 2011 Lennart Poettering
systemd is free software; you can redistribute it and/or modify it
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
(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
Lesser General Public License for more details.
You should have received a copy of the GNU Lesser General Public License
along with systemd; If not, see <http://www.gnu.org/licenses/>.
***/
#include <errno.h>
#include <string.h>
#include "logind.h"
#include "logind-machine.h"
#include "dbus-common.h"
#define BUS_MACHINE_INTERFACE \
" <interface name=\"org.freedesktop.login1.Machine\">\n" \
" <method name=\"Terminate\"/>\n" \
" <method name=\"Kill\">\n" \
" <arg name=\"who\" type=\"s\"/>\n" \
" <arg name=\"signal\" type=\"s\"/>\n" \
" </method>\n" \
" <property name=\"Name\" type=\"s\" access=\"read\"/>\n" \
" <property name=\"Id\" type=\"ay\" access=\"read\"/>\n" \
" <property name=\"Timestamp\" type=\"t\" access=\"read\"/>\n" \
" <property name=\"TimestampMonotonic\" type=\"t\" access=\"read\"/>\n" \
" <property name=\"DefaultControlGroup\" type=\"s\" access=\"read\"/>\n" \
" <property name=\"Service\" type=\"s\" access=\"read\"/>\n" \
" <property name=\"Slice\" type=\"s\" access=\"read\"/>\n" \
" <property name=\"Leader\" type=\"u\" access=\"read\"/>\n" \
" <property name=\"Class\" type=\"s\" access=\"read\"/>\n" \
" <property name=\"RootDirectory\" type=\"s\" access=\"read\"/>\n" \
" </interface>\n"
#define INTROSPECTION \
DBUS_INTROSPECT_1_0_XML_DOCTYPE_DECL_NODE \
"<node>\n" \
BUS_MACHINE_INTERFACE \
BUS_PROPERTIES_INTERFACE \
BUS_PEER_INTERFACE \
BUS_INTROSPECTABLE_INTERFACE \
"</node>\n"
#define INTERFACES_LIST \
BUS_GENERIC_INTERFACES_LIST \
"org.freedesktop.login1.Machine\0"
static int bus_machine_append_default_cgroup(DBusMessageIter *i, const char *property, void *data) {
_cleanup_free_ char *t = NULL;
Machine *m = data;
int r;
bool success;
assert(i);
assert(property);
assert(m);
r = cg_join_spec(SYSTEMD_CGROUP_CONTROLLER, m->cgroup_path, &t);
if (r < 0)
return r;
success = dbus_message_iter_append_basic(i, DBUS_TYPE_STRING, &t);
return success ? 0 : -ENOMEM;
}
static int bus_machine_append_id(DBusMessageIter *i, const char *property, void *data) {
DBusMessageIter sub;
Machine *m = data;
dbus_bool_t b;
void *p;
assert(i);
assert(property);
assert(m);
if (!dbus_message_iter_open_container(i, DBUS_TYPE_ARRAY, "y", &sub))
return -ENOMEM;
p = &m->id;
b = dbus_message_iter_append_fixed_array(&sub, DBUS_TYPE_BYTE, &p, 16);
if (!b)
return -ENOMEM;
if (!dbus_message_iter_close_container(i, &sub))
return -ENOMEM;
return 0;
}
static int get_machine_for_path(Manager *m, const char *path, Machine **_machine) {
_cleanup_free_ char *e = NULL;
Machine *machine;
assert(m);
assert(path);
assert(_machine);
if (!startswith(path, "/org/freedesktop/login1/machine/"))
return -EINVAL;
e = bus_path_unescape(path + 32);
if (!e)
return -ENOMEM;
machine = hashmap_get(m->machines, e);
if (!machine)
return -ENOENT;
*_machine = machine;
return 0;
}
static DEFINE_BUS_PROPERTY_APPEND_ENUM(bus_machine_append_class, machine_class, MachineClass);
static const BusProperty bus_login_machine_properties[] = {
{ "Name", bus_property_append_string, "s", offsetof(Machine, name), true },
{ "Id", bus_machine_append_id, "ay", 0 },
{ "Timestamp", bus_property_append_usec, "t", offsetof(Machine, timestamp.realtime) },
{ "TimestampMonotonic", bus_property_append_usec, "t", offsetof(Machine, timestamp.monotonic) },
{ "DefaultControlGroup", bus_machine_append_default_cgroup, "s", 0 },
{ "Service", bus_property_append_string, "s", offsetof(Machine, service), true },
{ "Slice", bus_property_append_string, "s", offsetof(Machine, slice), true },
{ "Leader", bus_property_append_pid, "u", offsetof(Session, leader) },
{ "Class", bus_machine_append_class, "s", offsetof(Machine, class) },
{ "RootDirectory", bus_property_append_string, "s", offsetof(Machine, root_directory), true },
{ NULL, }
};
static DBusHandlerResult machine_message_dispatch(
Machine *m,
DBusConnection *connection,
DBusMessage *message) {
DBusError error;
_cleanup_dbus_message_unref_ DBusMessage *reply = NULL;
int r;
assert(m);
assert(connection);
assert(message);
if (dbus_message_is_method_call(message, "org.freedesktop.login1.Machine", "Terminate")) {
r = machine_stop(m);
if (r < 0)
return bus_send_error_reply(connection, message, NULL, r);
reply = dbus_message_new_method_return(message);
if (!reply)
goto oom;
} else if (dbus_message_is_method_call(message, "org.freedesktop.login1.Machine", "Kill")) {
const char *swho;
int32_t signo;
KillWho who;
if (!dbus_message_get_args(
message,
&error,
DBUS_TYPE_STRING, &swho,
DBUS_TYPE_INT32, &signo,
DBUS_TYPE_INVALID))
return bus_send_error_reply(connection, message, &error, -EINVAL);
if (isempty(swho))
who = KILL_ALL;
else {
who = kill_who_from_string(swho);
if (who < 0)
return bus_send_error_reply(connection, message, &error, -EINVAL);
}
if (signo <= 0 || signo >= _NSIG)
return bus_send_error_reply(connection, message, &error, -EINVAL);
r = machine_kill(m, who, signo);
if (r < 0)
return bus_send_error_reply(connection, message, NULL, r);
reply = dbus_message_new_method_return(message);
if (!reply)
goto oom;
} else {
const BusBoundProperties bps[] = {
{ "org.freedesktop.login1.Machine", bus_login_machine_properties, m },
{ NULL, }
};
return bus_default_message_handler(connection, message, INTROSPECTION, INTERFACES_LIST, bps);
}
if (reply) {
if (!bus_maybe_send_reply(connection, message, reply))
goto oom;
}
return DBUS_HANDLER_RESULT_HANDLED;
oom:
dbus_error_free(&error);
return DBUS_HANDLER_RESULT_NEED_MEMORY;
}
static DBusHandlerResult machine_message_handler(
DBusConnection *connection,
DBusMessage *message,
void *userdata) {
Manager *manager = userdata;
Machine *m;
int r;
r = get_machine_for_path(manager, dbus_message_get_path(message), &m);
if (r < 0) {
if (r == -ENOMEM)
return DBUS_HANDLER_RESULT_NEED_MEMORY;
if (r == -ENOENT) {
DBusError e;
dbus_error_init(&e);
dbus_set_error_const(&e, DBUS_ERROR_UNKNOWN_OBJECT, "Unknown machine");
return bus_send_error_reply(connection, message, &e, r);
}
return bus_send_error_reply(connection, message, NULL, r);
}
return machine_message_dispatch(m, connection, message);
}
const DBusObjectPathVTable bus_machine_vtable = {
.message_function = machine_message_handler
};
char *machine_bus_path(Machine *m) {
_cleanup_free_ char *e = NULL;
assert(m);
e = bus_path_escape(m->name);
if (!e)
return NULL;
return strappend("/org/freedesktop/login1/machine/", e);
}
int machine_send_signal(Machine *m, bool new_machine) {
_cleanup_dbus_message_unref_ DBusMessage *msg = NULL;
_cleanup_free_ char *p = NULL;
assert(m);
msg = dbus_message_new_signal("/org/freedesktop/login1",
"org.freedesktop.login1.Manager",
new_machine ? "MachineNew" : "MachineRemoved");
if (!m)
return -ENOMEM;
p = machine_bus_path(m);
if (!p)
return -ENOMEM;
if (!dbus_message_append_args(
msg,
DBUS_TYPE_STRING, &m->name,
DBUS_TYPE_OBJECT_PATH, &p,
DBUS_TYPE_INVALID))
return -ENOMEM;
if (!dbus_connection_send(m->manager->bus, msg, NULL))
return -ENOMEM;
return 0;
}
int machine_send_changed(Machine *m, const char *properties) {
_cleanup_dbus_message_unref_ DBusMessage *msg = NULL;
_cleanup_free_ char *p = NULL;
assert(m);
if (!m->started)
return 0;
p = machine_bus_path(m);
if (!p)
return -ENOMEM;
msg = bus_properties_changed_new(p, "org.freedesktop.login1.Machine", properties);
if (!msg)
return -ENOMEM;
if (!dbus_connection_send(m->manager->bus, msg, NULL))
return -ENOMEM;
return 0;
}

455
src/login/logind-machine.c Normal file
View File

@ -0,0 +1,455 @@
/*-*- Mode: C; c-basic-offset: 8; indent-tabs-mode: nil -*-*/
/***
This file is part of systemd.
Copyright 2011 Lennart Poettering
systemd is free software; you can redistribute it and/or modify it
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
(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
Lesser General Public License for more details.
You should have received a copy of the GNU Lesser General Public License
along with systemd; If not, see <http://www.gnu.org/licenses/>.
***/
#include <string.h>
#include <unistd.h>
#include <errno.h>
#include "logind-machine.h"
#include "util.h"
#include "mkdir.h"
#include "cgroup-util.h"
#include "hashmap.h"
#include "strv.h"
#include "fileio.h"
#include "special.h"
#include <systemd/sd-messages.h>
Machine* machine_new(Manager *manager, const char *name) {
Machine *m;
assert(manager);
assert(name);
m = new0(Machine, 1);
if (!m)
return NULL;
m->name = strdup(name);
if (!m->name)
goto fail;
m->state_file = strappend("/run/systemd/machines/", m->name);
if (!m->state_file)
goto fail;
if (hashmap_put(manager->machines, m->name, m) < 0)
goto fail;
m->class = _MACHINE_CLASS_INVALID;
m->manager = manager;
return m;
fail:
free(m->state_file);
free(m->name);
free(m);
return NULL;
}
void machine_free(Machine *m) {
assert(m);
if (m->in_gc_queue)
LIST_REMOVE(Machine, gc_queue, m->manager->machine_gc_queue, m);
if (m->cgroup_path) {
hashmap_remove(m->manager->machine_cgroups, m->cgroup_path);
free(m->cgroup_path);
}
hashmap_remove(m->manager->machines, m->name);
free(m->name);
free(m->state_file);
free(m->service);
free(m->slice);
free(m->root_directory);
free(m);
}
int machine_save(Machine *m) {
_cleanup_free_ char *temp_path = NULL;
_cleanup_fclose_ FILE *f = NULL;
int r;
assert(m);
assert(m->state_file);
if (!m->started)
return 0;
r = mkdir_safe_label("/run/systemd/machines", 0755, 0, 0);
if (r < 0)
goto finish;
r = fopen_temporary(m->state_file, &f, &temp_path);
if (r < 0)
goto finish;
fchmod(fileno(f), 0644);
fprintf(f,
"# This is private data. Do not parse.\n"
"NAME=%s\n",
m->name);
if (m->cgroup_path)
fprintf(f, "CGROUP=%s\n", m->cgroup_path);
if (m->service)
fprintf(f, "SERVICE=%s\n", m->service);
if (m->slice)
fprintf(f, "SLICE=%s\n", m->slice);
if (m->root_directory)
fprintf(f, "ROOT=%s\n", m->root_directory);
if (!sd_id128_equal(m->id, SD_ID128_NULL))
fprintf(f, "ID=" SD_ID128_FORMAT_STR "\n", SD_ID128_FORMAT_VAL(m->id));
if (m->leader != 0)
fprintf(f, "LEADER=%lu\n", (unsigned long) m->leader);
if (m->class != _MACHINE_CLASS_INVALID)
fprintf(f, "CLASS=%s\n", machine_class_to_string(m->class));
if (dual_timestamp_is_set(&m->timestamp))
fprintf(f,
"REALTIME=%llu\n"
"MONOTONIC=%llu\n",
(unsigned long long) m->timestamp.realtime,
(unsigned long long) m->timestamp.monotonic);
fflush(f);
if (ferror(f) || rename(temp_path, m->state_file) < 0) {
r = -errno;
unlink(m->state_file);
unlink(temp_path);
}
finish:
if (r < 0)
log_error("Failed to save machine data for %s: %s", m->name, strerror(-r));
return r;
}
int machine_load(Machine *m) {
_cleanup_free_ char *realtime = NULL, *monotonic = NULL, *id = NULL, *leader = NULL, *class = NULL;
int r;
assert(m);
r = parse_env_file(m->state_file, NEWLINE,
"CGROUP", &m->cgroup_path,
"SERVICE", &m->service,
"SLICE", &m->slice,
"ROOT", &m->root_directory,
"ID", &id,
"LEADER", &leader,
"CLASS", &class,
"REALTIME", &realtime,
"MONOTONIC", &monotonic,
NULL);
if (r < 0) {
if (r == -ENOENT)
return 0;
log_error("Failed to read %s: %s", m->state_file, strerror(-r));
return r;
}
if (id)
sd_id128_from_string(id, &m->id);
if (leader)
parse_pid(leader, &m->leader);
if (class) {
MachineClass c;
c = machine_class_from_string(class);
if (c >= 0)
m->class = c;
}
if (realtime) {
unsigned long long l;
if (sscanf(realtime, "%llu", &l) > 0)
m->timestamp.realtime = l;
}
if (monotonic) {
unsigned long long l;
if (sscanf(monotonic, "%llu", &l) > 0)
m->timestamp.monotonic = l;
}
return r;
}
static int machine_create_one_group(Machine *m, const char *controller, const char *path) {
int r;
assert(m);
assert(path);
if (m->leader > 0)
r = cg_create_and_attach(controller, path, m->leader);
else
r = -EINVAL;
if (r < 0) {
r = cg_create(controller, path, NULL);
if (r < 0)
return r;
}
return 0;
}
static int machine_create_cgroup(Machine *m) {
char **k;
int r;
assert(m);
if (!m->slice) {
m->slice = strdup(SPECIAL_MACHINE_SLICE);
if (!m->slice)
return log_oom();
}
if (!m->cgroup_path) {
_cleanup_free_ char *escaped = NULL, *slice = NULL;
char *name;
name = strappenda(m->name, ".machine");
escaped = cg_escape(name);
if (!escaped)
return log_oom();
r = cg_slice_to_path(m->slice, &slice);
if (r < 0)
return r;
m->cgroup_path = strjoin(m->manager->cgroup_root, "/", slice, "/", escaped, NULL);
if (!m->cgroup_path)
return log_oom();
}
r = machine_create_one_group(m, SYSTEMD_CGROUP_CONTROLLER, m->cgroup_path);
if (r < 0) {
log_error("Failed to create cgroup "SYSTEMD_CGROUP_CONTROLLER":%s: %s", m->cgroup_path, strerror(-r));
return r;
}
STRV_FOREACH(k, m->manager->controllers) {
if (strv_contains(m->manager->reset_controllers, *k))
continue;
r = machine_create_one_group(m, *k, m->cgroup_path);
if (r < 0)
log_warning("Failed to create cgroup %s:%s: %s", *k, m->cgroup_path, strerror(-r));
}
if (m->leader > 0) {
STRV_FOREACH(k, m->manager->reset_controllers) {
r = cg_attach(*k, "/", m->leader);
if (r < 0)
log_warning("Failed to reset controller %s: %s", *k, strerror(-r));
}
}
r = hashmap_put(m->manager->machine_cgroups, m->cgroup_path, m);
if (r < 0)
log_warning("Failed to create mapping between cgroup and machine");
return 0;
}
int machine_start(Machine *m) {
int r;
assert(m);
if (m->started)
return 0;
log_struct(LOG_INFO,
MESSAGE_ID(SD_MESSAGE_MACHINE_START),
"NAME=%s", m->name,
"LEADER=%lu", (unsigned long) m->leader,
"MESSAGE=New machine %s.", m->name,
NULL);
/* Create cgroup */
r = machine_create_cgroup(m);
if (r < 0)
return r;
if (!dual_timestamp_is_set(&m->timestamp))
dual_timestamp_get(&m->timestamp);
m->started = true;
/* Save new machine data */
machine_save(m);
machine_send_signal(m, true);
return 0;
}
static int machine_terminate_cgroup(Machine *m) {
int r;
char **k;
assert(m);
if (!m->cgroup_path)
return 0;
cg_trim(SYSTEMD_CGROUP_CONTROLLER, m->cgroup_path, false);
r = cg_kill_recursive_and_wait(SYSTEMD_CGROUP_CONTROLLER, m->cgroup_path, true);
if (r < 0)
log_error("Failed to kill machine cgroup: %s", strerror(-r));
STRV_FOREACH(k, m->manager->controllers)
cg_trim(*k, m->cgroup_path, true);
hashmap_remove(m->manager->machine_cgroups, m->cgroup_path);
free(m->cgroup_path);
m->cgroup_path = NULL;
return r;
}
int machine_stop(Machine *m) {
int r = 0, k;
assert(m);
if (m->started)
log_struct(LOG_INFO,
MESSAGE_ID(SD_MESSAGE_MACHINE_STOP),
"NAME=%s", m->name,
"LEADER=%lu", (unsigned long) m->leader,
"MESSAGE=Machine %s terminated.", m->name,
NULL);
/* Kill cgroup */
k = machine_terminate_cgroup(m);
if (k < 0)
r = k;
unlink(m->state_file);
machine_add_to_gc_queue(m);
if (m->started)
machine_send_signal(m, false);
m->started = false;
return r;
}
int machine_check_gc(Machine *m, bool drop_not_started) {
int r;
assert(m);
if (drop_not_started && !m->started)
return 0;
if (m->cgroup_path) {
r = cg_is_empty_recursive(SYSTEMD_CGROUP_CONTROLLER, m->cgroup_path, false);
if (r < 0)
return r;
if (r <= 0)
return 1;
}
return 0;
}
void machine_add_to_gc_queue(Machine *m) {
assert(m);
if (m->in_gc_queue)
return;
LIST_PREPEND(Machine, gc_queue, m->manager->machine_gc_queue, m);
m->in_gc_queue = true;
}
int machine_kill(Machine *m, KillWho who, int signo) {
_cleanup_set_free_ Set *pid_set = NULL;
int r = 0;
assert(m);
if (!m->cgroup_path)
return -ESRCH;
if (m->leader <= 0 && who == KILL_LEADER)
return -ESRCH;
if (m->leader > 0)
if (kill(m->leader, signo) < 0)
r = -errno;
if (who == KILL_ALL) {
int q;
pid_set = set_new(trivial_hash_func, trivial_compare_func);
if (!pid_set)
return log_oom();
if (m->leader > 0) {
q = set_put(pid_set, LONG_TO_PTR(m->leader));
if (q < 0)
r = q;
}
q = cg_kill_recursive(SYSTEMD_CGROUP_CONTROLLER, m->cgroup_path, signo, false, true, false, pid_set);
if (q < 0 && (q != -EAGAIN && q != -ESRCH && q != -ENOENT))
r = q;
}
return r;
}
static const char* const machine_class_table[_MACHINE_CLASS_MAX] = {
[MACHINE_CONTAINER] = "container",
[MACHINE_VM] = "vm"
};
DEFINE_STRING_TABLE_LOOKUP(machine_class, MachineClass);

80
src/login/logind-machine.h Normal file
View File

@ -0,0 +1,80 @@
/*-*- Mode: C; c-basic-offset: 8; indent-tabs-mode: nil -*-*/
#pragma once
/***
This file is part of systemd.
Copyright 2013 Lennart Poettering
systemd is free software; you can redistribute it and/or modify it
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
(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
Lesser General Public License for more details.
You should have received a copy of the GNU Lesser General Public License
along with systemd; If not, see <http://www.gnu.org/licenses/>.
***/
typedef struct Machine Machine;
#include "list.h"
#include "util.h"
#include "logind.h"
#include "logind-session.h"
typedef enum MachineClass {
MACHINE_CONTAINER,
MACHINE_VM,
_MACHINE_CLASS_MAX,
_MACHINE_CLASS_INVALID = -1
} MachineClass;
struct Machine {
Manager *manager;
char *name;
sd_id128_t id;
MachineClass class;
char *state_file;
char *service;
char *cgroup_path;
char *slice;
char *root_directory;
pid_t leader;
dual_timestamp timestamp;
bool in_gc_queue:1;
bool started:1;
LIST_FIELDS(Machine, gc_queue);
};
Machine* machine_new(Manager *manager, const char *name);
void machine_free(Machine *m);
int machine_check_gc(Machine *m, bool drop_not_started);
void machine_add_to_gc_queue(Machine *m);
int machine_start(Machine *m);
int machine_stop(Machine *m);
int machine_save(Machine *m);
int machine_load(Machine *m);
int machine_kill(Machine *m, KillWho who, int signo);
char *machine_bus_path(Machine *s);
extern const DBusObjectPathVTable bus_machine_vtable;
int machine_send_signal(Machine *m, bool new_machine);
int machine_send_changed(Machine *m, const char *properties);
const char* machine_class_to_string(MachineClass t) _const_;
MachineClass machine_class_from_string(const char *s) _pure_;

6
src/login/logind-seat-dbus.c
View File

@ -209,8 +209,8 @@ static int bus_seat_append_idle_hint_since(DBusMessageIter *i, const char *prope
}
static int get_seat_for_path(Manager *m, const char *path, Seat **_s) {
_cleanup_free_ char *id = NULL;
Seat *s;
char *id;
assert(m);
assert(path);
@ -224,8 +224,6 @@ static int get_seat_for_path(Manager *m, const char *path, Seat **_s) {
return -ENOMEM;
s = hashmap_get(m->seats, id);
free(id);
if (!s)
return -ENOENT;
@ -348,7 +346,7 @@ const DBusObjectPathVTable bus_seat_vtable = {
};
char *seat_bus_path(Seat *s) {
_cleanup_free_ char *t;
_cleanup_free_ char *t = NULL;
assert(s);

8
src/login/logind-session-dbus.c
View File

@ -56,6 +56,7 @@
" <property name=\"RemoteHost\" type=\"s\" access=\"read\"/>\n" \
" <property name=\"RemoteUser\" type=\"s\" access=\"read\"/>\n" \
" <property name=\"Service\" type=\"s\" access=\"read\"/>\n" \
" <property name=\"Slice\" type=\"s\" access=\"read\"/>\n" \
" <property name=\"Leader\" type=\"u\" access=\"read\"/>\n" \
" <property name=\"Audit\" type=\"u\" access=\"read\"/>\n" \
" <property name=\"Type\" type=\"s\" access=\"read\"/>\n" \
@ -233,8 +234,8 @@ static int bus_session_append_state(DBusMessageIter *i, const char *property, vo
}
static int get_session_for_path(Manager *m, const char *path, Session **_s) {
_cleanup_free_ char *id = NULL;
Session *s;
char *id;
assert(m);
assert(path);
@ -248,8 +249,6 @@ static int get_session_for_path(Manager *m, const char *path, Session **_s) {
return -ENOMEM;
s = hashmap_get(m->sessions, id);
free(id);
if (!s)
return -ENOENT;
@ -270,6 +269,7 @@ static const BusProperty bus_login_session_properties[] = {
{ "RemoteUser", bus_property_append_string, "s", offsetof(Session, remote_user), true },
{ "RemoteHost", bus_property_append_string, "s", offsetof(Session, remote_host), true },
{ "Service", bus_property_append_string, "s", offsetof(Session, service), true },
{ "Slice", bus_property_append_string, "s", offsetof(Session, slice), true },
{ "Leader", bus_property_append_pid, "u", offsetof(Session, leader) },
{ "Audit", bus_property_append_uint32, "u", offsetof(Session, audit_id) },
{ "Type", bus_session_append_type, "s", offsetof(Session, type) },
@ -448,7 +448,7 @@ const DBusObjectPathVTable bus_session_vtable = {
};
char *session_bus_path(Session *s) {
_cleanup_free_ char *t;
_cleanup_free_ char *t = NULL;
assert(s);

169
src/login/logind-session.c
View File

@ -35,7 +35,7 @@
#include "logind-session.h"
#include "fileio.h"
Session* session_new(Manager *m, User *u, const char *id) {
Session* session_new(Manager *m, const char *id) {
Session *s;
assert(m);
@ -61,9 +61,6 @@ Session* session_new(Manager *m, User *u, const char *id) {
s->manager = m;
s->fifo_fd = -1;
s->user = u;
LIST_PREPEND(Session, sessions_by_user, u->sessions, s);
return s;
}
@ -99,6 +96,7 @@ void session_free(Session *s) {
free(s->remote_host);
free(s->remote_user);
free(s->service);
free(s->slice);
hashmap_remove(s->manager->sessions, s->id);
session_remove_fifo(s);
@ -107,6 +105,14 @@ void session_free(Session *s) {
free(s);
}
void session_set_user(Session *s, User *u) {
assert(s);
assert(!s->user);
s->user = u;
LIST_PREPEND(Session, sessions_by_user, u->sessions, s);
}
int session_save(Session *s) {
_cleanup_fclose_ FILE *f = NULL;
_cleanup_free_ char *temp_path = NULL;
@ -114,6 +120,9 @@ int session_save(Session *s) {
assert(s);
if (!s->user)
return -ESTALE;
if (!s->started)
return 0;
@ -174,6 +183,9 @@ int session_save(Session *s) {
if (s->service)
fprintf(f, "SERVICE=%s\n", s->service);
if (s->seat)
fprintf(f, "SLICE=%s\n", s->slice);
if (s->seat && seat_can_multi_session(s->seat))
fprintf(f, "VTNR=%i\n", s->vtnr);
@ -183,6 +195,13 @@ int session_save(Session *s) {
if (s->audit_id > 0)
fprintf(f, "AUDIT=%"PRIu32"\n", s->audit_id);
if (dual_timestamp_is_set(&s->timestamp))
fprintf(f,
"REALTIME=%llu\n"
"MONOTONIC=%llu\n",
(unsigned long long) s->timestamp.realtime,
(unsigned long long) s->timestamp.monotonic);
fflush(f);
if (ferror(f) || rename(temp_path, s->state_file) < 0) {
@ -199,14 +218,17 @@ finish:
}
int session_load(Session *s) {
char *remote = NULL,
_cleanup_free_ char *remote = NULL,
*kill_processes = NULL,
*seat = NULL,
*vtnr = NULL,
*leader = NULL,
*audit_id = NULL,
*type = NULL,
*class = NULL;
*class = NULL,
*uid = NULL,
*realtime = NULL,
*monotonic = NULL;
int k, r;
@ -223,14 +245,44 @@ int session_load(Session *s) {
"REMOTE_HOST", &s->remote_host,
"REMOTE_USER", &s->remote_user,
"SERVICE", &s->service,
"SLICE", &s->slice,
"VTNR", &vtnr,
"LEADER", &leader,
"TYPE", &type,
"CLASS", &class,
"UID", &uid,
"REALTIME", &realtime,
"MONOTONIC", &monotonic,
NULL);
if (r < 0)
goto finish;
if (r < 0) {
log_error("Failed to read %s: %s", s->state_file, strerror(-r));
return r;
}
if (!s->user) {
uid_t u;
User *user;
if (!uid) {
log_error("UID not specified for session %s", s->id);
return -ENOENT;
}
r = parse_uid(uid, &u);
if (r < 0) {
log_error("Failed to parse UID value %s for session %s.", uid, s->id);
return r;
}
user = hashmap_get(s->manager->users, ULONG_TO_PTR((unsigned long) u));
if (!user) {
log_error("User of session %s not known.", s->id);
return -ENOENT;
}
session_set_user(s, user);
}
if (remote) {
k = parse_boolean(remote);
@ -295,14 +347,17 @@ int session_load(Session *s) {
close_nointr_nofail(fd);
}
finish:
free(remote);
free(kill_processes);
free(seat);
free(vtnr);
free(leader);
free(audit_id);
free(class);
if (realtime) {
unsigned long long l;
if (sscanf(realtime, "%llu", &l) > 0)
s->timestamp.realtime = l;
}
if (monotonic) {
unsigned long long l;
if (sscanf(monotonic, "%llu", &l) > 0)
s->timestamp.monotonic = l;
}
return r;
}
@ -311,6 +366,7 @@ int session_activate(Session *s) {
int r;
assert(s);
assert(s->user);
if (s->vtnr < 0)
return -ENOTSUP;
@ -407,17 +463,19 @@ static int session_create_one_group(Session *s, const char *controller, const ch
int r;
assert(s);
assert(s->user);
assert(path);
if (s->leader > 0) {
if (s->leader > 0)
r = cg_create_and_attach(controller, path, s->leader);
if (r < 0)
r = cg_create(controller, path, NULL);
} else
r = cg_create(controller, path, NULL);
else
r = -EINVAL;
if (r < 0)
return r;
if (r < 0) {
r = cg_create(controller, path, NULL);
if (r < 0)
return r;
}
r = cg_set_task_access(controller, path, 0644, s->user->uid, s->user->gid, -1);
if (r >= 0)
@ -428,7 +486,6 @@ static int session_create_one_group(Session *s, const char *controller, const ch
static int session_create_cgroup(Session *s) {
char **k;
char *p;
int r;
assert(s);
@ -446,30 +503,41 @@ static int session_create_cgroup(Session *s) {
if (!escaped)
return log_oom();
p = strjoin(s->user->cgroup_path, "/", escaped, NULL);
if (!p)
return log_oom();
} else
p = s->cgroup_path;
if (s->slice) {
_cleanup_free_ char *slice = NULL;
r = session_create_one_group(s, SYSTEMD_CGROUP_CONTROLLER, p);
if (r < 0) {
log_error("Failed to create "SYSTEMD_CGROUP_CONTROLLER":%s: %s", p, strerror(-r));
free(p);
s->cgroup_path = NULL;
return r;
r = cg_slice_to_path(s->slice, &slice);
if (r < 0)
return r;
s->cgroup_path = strjoin(s->manager->cgroup_root, "/", slice, "/", escaped, NULL);
} else
s->cgroup_path = strjoin(s->user->cgroup_path, "/", escaped, NULL);
if (!s->cgroup_path)
return log_oom();
}
s->cgroup_path = p;
if (!s->slice) {
s->slice = strdup(s->user->slice);
if (!s->slice)
return log_oom();
}
r = session_create_one_group(s, SYSTEMD_CGROUP_CONTROLLER, s->cgroup_path);
if (r < 0) {
log_error("Failed to create "SYSTEMD_CGROUP_CONTROLLER":%s: %s", s->cgroup_path, strerror(-r));
return r;
}
STRV_FOREACH(k, s->controllers) {
if (strv_contains(s->reset_controllers, *k))
continue;
r = session_create_one_group(s, *k, p);
r = session_create_one_group(s, *k, s->cgroup_path);
if (r < 0)
log_warning("Failed to create %s:%s: %s", *k, p, strerror(-r));
log_warning("Failed to create %s:%s: %s", *k, s->cgroup_path, strerror(-r));
}
STRV_FOREACH(k, s->manager->controllers) {
@ -479,9 +547,9 @@ static int session_create_cgroup(Session *s) {
strv_contains(s->controllers, *k))
continue;
r = session_create_one_group(s, *k, p);
r = session_create_one_group(s, *k, s->cgroup_path);
if (r < 0)
log_warning("Failed to create %s:%s: %s", *k, p, strerror(-r));
log_warning("Failed to create %s:%s: %s", *k, s->cgroup_path, strerror(-r));
}
if (s->leader > 0) {
@ -502,7 +570,6 @@ static int session_create_cgroup(Session *s) {
r = cg_attach(*k, "/", s->leader);
if (r < 0)
log_warning("Failed to reset controller %s: %s", *k, strerror(-r));
}
}
@ -517,7 +584,9 @@ int session_start(Session *s) {
int r;
assert(s);
assert(s->user);
if (!s->user)
return -ESTALE;
if (s->started)
return 0;
@ -542,7 +611,8 @@ int session_start(Session *s) {
/* Create X11 symlink */
session_link_x11_socket(s);
dual_timestamp_get(&s->timestamp);
if (!dual_timestamp_is_set(&s->timestamp))
dual_timestamp_get(&s->timestamp);
if (s->seat)
seat_read_active_vt(s->seat);
@ -667,6 +737,9 @@ int session_stop(Session *s) {
assert(s);
if (!s->user)
return -ESTALE;
if (s->started)
log_struct(s->type == SESSION_TTY || s->type == SESSION_X11 ? LOG_INFO : LOG_DEBUG,
MESSAGE_ID(SD_MESSAGE_SESSION_STOP),
@ -932,6 +1005,9 @@ int session_check_gc(Session *s, bool drop_not_started) {
if (drop_not_started && !s->started)
return 0;
if (!s->user)
return 0;
if (s->fifo_fd >= 0) {
r = pipe_eof(s->fifo_fd);
@ -978,8 +1054,8 @@ SessionState session_get_state(Session *s) {
}
int session_kill(Session *s, KillWho who, int signo) {
_cleanup_set_free_ Set *pid_set = NULL;
int r = 0;
Set *pid_set = NULL;
assert(s);
@ -998,7 +1074,7 @@ int session_kill(Session *s, KillWho who, int signo) {
pid_set = set_new(trivial_hash_func, trivial_compare_func);
if (!pid_set)
return -ENOMEM;
return log_oom();
if (s->leader > 0) {
q = set_put(pid_set, LONG_TO_PTR(s->leader));
@ -1012,9 +1088,6 @@ int session_kill(Session *s, KillWho who, int signo) {
r = q;
}
if (pid_set)
set_free(pid_set);
return r;
}

9
src/login/logind-session.h
View File

@ -22,6 +22,7 @@
***/
typedef struct Session Session;
typedef enum KillWho KillWho;
#include "list.h"
#include "util.h"
@ -54,12 +55,12 @@ typedef enum SessionType {
_SESSION_TYPE_INVALID = -1
} SessionType;
typedef enum KillWho {
enum KillWho {
KILL_LEADER,
KILL_ALL,
_KILL_WHO_MAX,
_KILL_WHO_INVALID = -1
} KillWho;
};
struct Session {
Manager *manager;
@ -82,6 +83,7 @@ struct Session {
char *remote_host;
char *service;
char *slice;
int vtnr;
Seat *seat;
@ -108,8 +110,9 @@ struct Session {
LIST_FIELDS(Session, gc_queue);
};
Session *session_new(Manager *m, User *u, const char *id);
Session *session_new(Manager *m, const char *id);
void session_free(Session *s);
void session_set_user(Session *s, User *u);
int session_check_gc(Session *s, bool drop_not_started);
void session_add_to_gc_queue(Session *s);
int session_activate(Session *s);

10
src/login/logind-user-dbus.c
View File

@ -40,13 +40,14 @@
" <property name=\"RuntimePath\" type=\"s\" access=\"read\"/>\n" \
" <property name=\"DefaultControlGroup\" type=\"s\" access=\"read\"/>\n" \
" <property name=\"Service\" type=\"s\" access=\"read\"/>\n" \
" <property name=\"Slice\" type=\"s\" access=\"read\"/>\n" \
" <property name=\"Display\" type=\"(so)\" access=\"read\"/>\n" \
" <property name=\"State\" type=\"s\" access=\"read\"/>\n" \
" <property name=\"Sessions\" type=\"a(so)\" access=\"read\"/>\n" \
" <property name=\"IdleHint\" type=\"b\" access=\"read\"/>\n" \
" <property name=\"IdleSinceHint\" type=\"t\" access=\"read\"/>\n" \
" <property name=\"IdleSinceHintMonotonic\" type=\"t\" access=\"read\"/>\n" \
" </interface>\n" \
" </interface>\n"
#define INTROSPECTION \
DBUS_INTROSPECT_1_0_XML_DOCTYPE_DECL_NODE \
@ -212,10 +213,10 @@ static int get_user_for_path(Manager *m, const char *path, User **_u) {
assert(path);
assert(_u);
if (!startswith(path, "/org/freedesktop/login1/user/"))
if (!startswith(path, "/org/freedesktop/login1/user/_"))
return -EINVAL;
r = safe_atolu(path + 29, &lu);
r = safe_atolu(path + 30, &lu);
if (r < 0)
return r;
@ -236,6 +237,7 @@ static const BusProperty bus_login_user_properties[] = {
{ "RuntimePath", bus_property_append_string, "s", offsetof(User, runtime_path), true },
{ "DefaultControlGroup", bus_user_append_default_cgroup, "s", 0 },
{ "Service", bus_property_append_string, "s", offsetof(User, service), true },
{ "Slice", bus_property_append_string, "s", offsetof(User, slice), true },
{ "Display", bus_user_append_display, "(so)", 0 },
{ "State", bus_user_append_state, "s", 0 },
{ "Sessions", bus_user_append_sessions, "a(so)", 0 },
@ -348,7 +350,7 @@ char *user_bus_path(User *u) {
assert(u);
if (asprintf(&s, "/org/freedesktop/login1/user/%llu", (unsigned long long) u->uid) < 0)
if (asprintf(&s, "/org/freedesktop/login1/user/_%llu", (unsigned long long) u->uid) < 0)
return NULL;
return s;

154
src/login/logind-user.c
View File

@ -30,6 +30,7 @@
#include "hashmap.h"
#include "strv.h"
#include "fileio.h"
#include "special.h"
User* user_new(Manager *m, uid_t uid, gid_t gid, const char *name) {
User *u;
@ -42,29 +43,27 @@ User* user_new(Manager *m, uid_t uid, gid_t gid, const char *name) {
return NULL;
u->name = strdup(name);
if (!u->name) {
free(u);
return NULL;
}
if (!u->name)
goto fail;
if (asprintf(&u->state_file, "/run/systemd/users/%lu", (unsigned long) uid) < 0) {
free(u->name);
free(u);
return NULL;
}
if (asprintf(&u->state_file, "/run/systemd/users/%lu", (unsigned long) uid) < 0)
goto fail;
if (hashmap_put(m->users, ULONG_TO_PTR((unsigned long) uid), u) < 0) {
free(u->state_file);
free(u->name);
free(u);
return NULL;
}
if (hashmap_put(m->users, ULONG_TO_PTR((unsigned long) uid), u) < 0)
goto fail;
u->manager = m;
u->uid = uid;
u->gid = gid;
return u;
fail:
free(u->state_file);
free(u->name);
free(u);
return NULL;
}
void user_free(User *u) {
@ -76,9 +75,10 @@ void user_free(User *u) {
while (u->sessions)
session_free(u->sessions);
if (u->cgroup_path)
if (u->cgroup_path) {
hashmap_remove(u->manager->user_cgroups, u->cgroup_path);
free(u->cgroup_path);
free(u->cgroup_path);
}
free(u->service);
free(u->runtime_path);
@ -87,13 +87,14 @@ void user_free(User *u) {
free(u->name);
free(u->state_file);
free(u->slice);
free(u);
}
int user_save(User *u) {
FILE *f;
_cleanup_free_ char *temp_path = NULL;
_cleanup_fclose_ FILE *f = NULL;
int r;
char *temp_path;
assert(u);
assert(u->state_file);
@ -119,24 +120,26 @@ int user_save(User *u) {
user_state_to_string(user_get_state(u)));
if (u->cgroup_path)
fprintf(f,
"CGROUP=%s\n",
u->cgroup_path);
fprintf(f, "CGROUP=%s\n", u->cgroup_path);
if (u->runtime_path)
fprintf(f,
"RUNTIME=%s\n",
u->runtime_path);
fprintf(f, "RUNTIME=%s\n", u->runtime_path);
if (u->service)
fprintf(f,
"SERVICE=%s\n",
u->service);
fprintf(f, "SERVICE=%s\n", u->service);
if (u->slice)
fprintf(f, "SLICE=%s\n", u->slice);
if (u->display)
fprintf(f, "DISPLAY=%s\n", u->display->id);
if (dual_timestamp_is_set(&u->timestamp))
fprintf(f,
"DISPLAY=%s\n",
u->display->id);
"REALTIME=%llu\n"
"MONOTONIC=%llu\n",
(unsigned long long) u->timestamp.realtime,
(unsigned long long) u->timestamp.monotonic);
if (u->sessions) {
Session *i;
@ -233,9 +236,6 @@ int user_save(User *u) {
unlink(temp_path);
}
fclose(f);
free(temp_path);
finish:
if (r < 0)
log_error("Failed to save user data for %s: %s", u->name, strerror(-r));
@ -244,21 +244,22 @@ finish:
}
int user_load(User *u) {
int r;
char *display = NULL;
_cleanup_free_ char *display = NULL, *realtime = NULL, *monotonic = NULL;
Session *s = NULL;
int r;
assert(u);
r = parse_env_file(u->state_file, NEWLINE,
"CGROUP", &u->cgroup_path,
"RUNTIME", &u->runtime_path,
"SERVICE", &u->service,
"DISPLAY", &display,
"CGROUP", &u->cgroup_path,
"RUNTIME", &u->runtime_path,
"SERVICE", &u->service,
"DISPLAY", &display,
"SLICE", &u->slice,
"REALTIME", &realtime,
"MONOTONIC", &monotonic,
NULL);
if (r < 0) {
free(display);
if (r == -ENOENT)
return 0;
@ -266,14 +267,24 @@ int user_load(User *u) {
return r;
}
if (display) {
if (display)
s = hashmap_get(u->manager->sessions, display);
free(display);
}
if (s && s->display && display_is_local(s->display))
u->display = s;
if (realtime) {
unsigned long long l;
if (sscanf(realtime, "%llu", &l) > 0)
u->timestamp.realtime = l;
}
if (monotonic) {
unsigned long long l;
if (sscanf(monotonic, "%llu", &l) > 0)
u->timestamp.monotonic = l;
}
return r;
}
@ -309,13 +320,18 @@ static int user_mkdir_runtime_path(User *u) {
static int user_create_cgroup(User *u) {
char **k;
char *p;
int r;
assert(u);
if (!u->slice) {
u->slice = strdup(SPECIAL_USER_SLICE);
if (!u->slice)
return log_oom();
}
if (!u->cgroup_path) {
_cleanup_free_ char *name = NULL, *escaped = NULL;
_cleanup_free_ char *name = NULL, *escaped = NULL, *slice = NULL;
if (asprintf(&name, "%lu.user", (unsigned long) u->uid) < 0)
return log_oom();
@ -324,30 +340,29 @@ static int user_create_cgroup(User *u) {
if (!escaped)
return log_oom();
p = strjoin(u->manager->cgroup_path, "/", escaped, NULL);
if (!p)
return log_oom();
} else
p = u->cgroup_path;
r = cg_slice_to_path(u->slice, &slice);
if (r < 0)
return r;
r = cg_create(SYSTEMD_CGROUP_CONTROLLER, p, NULL);
if (r < 0) {
log_error("Failed to create cgroup "SYSTEMD_CGROUP_CONTROLLER":%s: %s", p, strerror(-r));
free(p);
u->cgroup_path = NULL;
return r;
u->cgroup_path = strjoin(u->manager->cgroup_root, "/", slice, "/", escaped, NULL);
if (!u->cgroup_path)
return log_oom();
}
u->cgroup_path = p;
r = cg_create(SYSTEMD_CGROUP_CONTROLLER, u->cgroup_path, NULL);
if (r < 0) {
log_error("Failed to create cgroup "SYSTEMD_CGROUP_CONTROLLER":%s: %s", u->cgroup_path, strerror(-r));
return r;
}
STRV_FOREACH(k, u->manager->controllers) {
if (strv_contains(u->manager->reset_controllers, *k))
continue;
r = cg_create(*k, p, NULL);
r = cg_create(*k, u->cgroup_path, NULL);
if (r < 0)
log_warning("Failed to create cgroup %s:%s: %s", *k, p, strerror(-r));
log_warning("Failed to create cgroup %s:%s: %s", *k, u->cgroup_path, strerror(-r));
}
r = hashmap_put(u->manager->user_cgroups, u->cgroup_path, u);
@ -390,7 +405,8 @@ int user_start(User *u) {
if (r < 0)
return r;
dual_timestamp_get(&u->timestamp);
if (!dual_timestamp_is_set(&u->timestamp))
dual_timestamp_get(&u->timestamp);
u->started = true;
@ -633,8 +649,8 @@ UserState user_get_state(User *u) {
}
int user_kill(User *u, int signo) {
int r = 0, q;
Set *pid_set = NULL;
_cleanup_set_free_ Set *pid_set = NULL;
int r;
assert(u);
@ -645,15 +661,11 @@ int user_kill(User *u, int signo) {
if (!pid_set)
return -ENOMEM;
q = cg_kill_recursive(SYSTEMD_CGROUP_CONTROLLER, u->cgroup_path, signo, false, true, false, pid_set);
if (q < 0)
if (q != -EAGAIN && q != -ESRCH && q != -ENOENT)
r = q;
r = cg_kill_recursive(SYSTEMD_CGROUP_CONTROLLER, u->cgroup_path, signo, false, true, false, pid_set);
if (r < 0 && (r != -EAGAIN && r != -ESRCH && r != -ENOENT))
return r;
if (pid_set)
set_free(pid_set);
return r;
return 0;
}
static const char* const user_state_table[_USER_STATE_MAX] = {

1
src/login/logind-user.h
View File

@ -49,6 +49,7 @@ struct User {
char *runtime_path;
char *service;
char *cgroup_path;
char *slice;
Session *display;

354
src/login/logind.c
View File

@ -74,16 +74,18 @@ Manager *manager_new(void) {
m->users = hashmap_new(trivial_hash_func, trivial_compare_func);
m->inhibitors = hashmap_new(string_hash_func, string_compare_func);
m->buttons = hashmap_new(string_hash_func, string_compare_func);
m->machines = hashmap_new(string_hash_func, string_compare_func);
m->user_cgroups = hashmap_new(string_hash_func, string_compare_func);
m->session_cgroups = hashmap_new(string_hash_func, string_compare_func);
m->machine_cgroups = hashmap_new(string_hash_func, string_compare_func);
m->session_fds = hashmap_new(trivial_hash_func, trivial_compare_func);
m->inhibitor_fds = hashmap_new(trivial_hash_func, trivial_compare_func);
m->button_fds = hashmap_new(trivial_hash_func, trivial_compare_func);
if (!m->devices || !m->seats || !m->sessions || !m->users || !m->inhibitors || !m->buttons ||
!m->user_cgroups || !m->session_cgroups ||
if (!m->devices || !m->seats || !m->sessions || !m->users || !m->inhibitors || !m->buttons || !m->machines ||
!m->user_cgroups || !m->session_cgroups || !m->machine_cgroups ||
!m->session_fds || !m->inhibitor_fds || !m->button_fds) {
manager_free(m);
return NULL;
@ -102,11 +104,14 @@ Manager *manager_new(void) {
return NULL;
}
if (cg_get_user_path(&m->cgroup_path) < 0) {
if (cg_get_root_path(&m->cgroup_root) < 0) {
manager_free(m);
return NULL;
}
if (streq(m->cgroup_root, "/"))
m->cgroup_root[0] = 0;
return m;
}
@ -117,6 +122,7 @@ void manager_free(Manager *m) {
Seat *s;
Inhibitor *i;
Button *b;
Machine *machine;
assert(m);
@ -138,15 +144,20 @@ void manager_free(Manager *m) {
while ((b = hashmap_first(m->buttons)))
button_free(b);
while ((machine = hashmap_first(m->machines)))
machine_free(machine);
hashmap_free(m->devices);
hashmap_free(m->seats);
hashmap_free(m->sessions);
hashmap_free(m->users);
hashmap_free(m->inhibitors);
hashmap_free(m->buttons);
hashmap_free(m->machines);
hashmap_free(m->user_cgroups);
hashmap_free(m->session_cgroups);
hashmap_free(m->machine_cgroups);
hashmap_free(m->session_fds);
hashmap_free(m->inhibitor_fds);
@ -190,7 +201,7 @@ void manager_free(Manager *m) {
free(m->action_job);
free(m->cgroup_path);
free(m->cgroup_root);
free(m);
}
@ -242,7 +253,7 @@ int manager_add_seat(Manager *m, const char *id, Seat **_seat) {
return 0;
}
int manager_add_session(Manager *m, User *u, const char *id, Session **_session) {
int manager_add_session(Manager *m, const char *id, Session **_session) {
Session *s;
assert(m);
@ -256,7 +267,7 @@ int manager_add_session(Manager *m, User *u, const char *id, Session **_session)
return 0;
}
s = session_new(m, u, id);
s = session_new(m, id);
if (!s)
return -ENOMEM;
@ -366,6 +377,30 @@ int manager_add_button(Manager *m, const char *name, Button **_button) {
return 0;
}
int manager_add_machine(Manager *m, const char *name, Machine **_machine) {
Machine *machine;
assert(m);
assert(name);
machine = hashmap_get(m->machines, name);
if (machine) {
if (_machine)
*_machine = machine;
return 0;
}
machine = machine_new(m, name);
if (!m)
return -ENOMEM;
if (_machine)
*_machine = machine;
return 0;
}
int manager_process_seat_device(Manager *m, struct udev_device *d) {
Device *device;
int r;
@ -554,7 +589,7 @@ finish:
}
int manager_enumerate_seats(Manager *m) {
DIR *d;
_cleanup_closedir_ DIR *d = NULL;
struct dirent *de;
int r = 0;
@ -573,7 +608,7 @@ int manager_enumerate_seats(Manager *m) {
return -errno;
}
while ((de = readdir(d))) {
FOREACH_DIRENT(de, d, return -errno) {
Seat *s;
int k;
@ -591,66 +626,16 @@ int manager_enumerate_seats(Manager *m) {
r = k;
}
closedir(d);
return r;
}
static int manager_enumerate_users_from_cgroup(Manager *m) {
_cleanup_closedir_ DIR *d = NULL;
int r = 0, k;
char *name;
r = cg_enumerate_subgroups(SYSTEMD_CGROUP_CONTROLLER, m->cgroup_path, &d);
if (r < 0) {
if (r == -ENOENT)
return 0;
log_error("Failed to open %s: %s", m->cgroup_path, strerror(-r));
return r;
}
while ((k = cg_read_subgroup(d, &name)) > 0) {
User *user;
char *e;
e = endswith(name, ".user");
if (e) {
*e = 0;
k = manager_add_user_by_name(m, name, &user);
if (k < 0) {
free(name);
r = k;
continue;
}
user_add_to_gc_queue(user);
if (!user->cgroup_path) {
user->cgroup_path = strjoin(m->cgroup_path, "/", name, NULL);
if (!user->cgroup_path) {
k = log_oom();
free(name);
break;
}
}
}
free(name);
}
if (k < 0)
r = k;
return r;
}
static int manager_enumerate_linger_users(Manager *m) {
DIR *d;
_cleanup_closedir_ DIR *d = NULL;
struct dirent *de;
int r = 0;
assert(m);
d = opendir("/var/lib/systemd/linger");
if (!d) {
if (errno == ENOENT)
@ -660,7 +645,7 @@ static int manager_enumerate_linger_users(Manager *m) {
return -errno;
}
while ((de = readdir(d))) {
FOREACH_DIRENT(de, d, return -errno) {
int k;
if (!dirent_is_file(de))
@ -673,27 +658,22 @@ static int manager_enumerate_linger_users(Manager *m) {
}
}
closedir(d);
return r;
}
int manager_enumerate_users(Manager *m) {
DIR *d;
_cleanup_closedir_ DIR *d = NULL;
struct dirent *de;
int r, k;
assert(m);
/* First, enumerate user cgroups */
r = manager_enumerate_users_from_cgroup(m);
/* Second, add lingering users on top */
/* Add lingering users */
k = manager_enumerate_linger_users(m);
if (k < 0)
r = k;
/* Third, read in user data stored on disk */
/* Read in user data stored on disk */
d = opendir("/run/systemd/users");
if (!d) {
if (errno == ENOENT)
@ -703,106 +683,38 @@ int manager_enumerate_users(Manager *m) {
return -errno;
}
while ((de = readdir(d))) {
uid_t uid;
FOREACH_DIRENT(de, d, return -errno) {
User *u;
if (!dirent_is_file(de))
continue;
k = parse_uid(de->d_name, &uid);
k = manager_add_user_by_name(m, de->d_name, &u);
if (k < 0) {
log_error("Failed to parse file name %s: %s", de->d_name, strerror(-k));
log_error("Failed to add user by file name %s: %s", de->d_name, strerror(-k));
r = k;
continue;
}
u = hashmap_get(m->users, ULONG_TO_PTR(uid));
if (!u) {
unlinkat(dirfd(d), de->d_name, 0);
continue;
}
user_add_to_gc_queue(u);
k = user_load(u);
if (k < 0)
r = k;
}
closedir(d);
return r;
}
static int manager_enumerate_sessions_from_cgroup(Manager *m) {
User *u;
Iterator i;
int r = 0;
HASHMAP_FOREACH(u, m->users, i) {
_cleanup_closedir_ DIR *d = NULL;
char *name;
int k;
if (!u->cgroup_path)
continue;
k = cg_enumerate_subgroups(SYSTEMD_CGROUP_CONTROLLER, u->cgroup_path, &d);
if (k < 0) {
if (k == -ENOENT)
continue;
log_error("Failed to open %s: %s", u->cgroup_path, strerror(-k));
r = k;
continue;
}
while ((k = cg_read_subgroup(d, &name)) > 0) {
Session *session;
char *e;
e = endswith(name, ".session");
if (e) {
*e = 0;
k = manager_add_session(m, u, name, &session);
if (k < 0) {
free(name);
r = k;
continue;
}
session_add_to_gc_queue(session);
if (!session->cgroup_path) {
session->cgroup_path = strjoin(m->cgroup_path, "/", name, NULL);
if (!session->cgroup_path) {
k = log_oom();
free(name);
break;
}
}
}
free(name);
}
if (k < 0)
r = k;
}
return r;
}
int manager_enumerate_sessions(Manager *m) {
DIR *d;
_cleanup_closedir_ DIR *d = NULL;
struct dirent *de;
int r = 0;
assert(m);
/* First enumerate session cgroups */
r = manager_enumerate_sessions_from_cgroup(m);
/* Second, read in session data stored on disk */
/* Read in session data stored on disk */
d = opendir("/run/systemd/sessions");
if (!d) {
if (errno == ENOENT)
@ -812,31 +724,33 @@ int manager_enumerate_sessions(Manager *m) {
return -errno;
}
while ((de = readdir(d))) {
FOREACH_DIRENT(de, d, return -errno) {
struct Session *s;
int k;
if (!dirent_is_file(de))
continue;
s = hashmap_get(m->sessions, de->d_name);
if (!s) {
unlinkat(dirfd(d), de->d_name, 0);
k = manager_add_session(m, de->d_name, &s);
if (k < 0) {
log_error("Failed to add session by file name %s: %s", de->d_name, strerror(-k));
r = k;
continue;
}
session_add_to_gc_queue(s);
k = session_load(s);
if (k < 0)
r = k;
}
closedir(d);
return r;
}
int manager_enumerate_inhibitors(Manager *m) {
DIR *d;
_cleanup_closedir_ DIR *d = NULL;
struct dirent *de;
int r = 0;
@ -851,7 +765,7 @@ int manager_enumerate_inhibitors(Manager *m) {
return -errno;
}
while ((de = readdir(d))) {
FOREACH_DIRENT(de, d, return -errno) {
int k;
Inhibitor *i;
@ -870,7 +784,47 @@ int manager_enumerate_inhibitors(Manager *m) {
r = k;
}
closedir(d);
return r;
}
int manager_enumerate_machines(Manager *m) {
_cleanup_closedir_ DIR *d = NULL;
struct dirent *de;
int r = 0;
assert(m);
/* Read in machine data stored on disk */
d = opendir("/run/systemd/machines");
if (!d) {
if (errno == ENOENT)
return 0;
log_error("Failed to open /run/systemd/machines: %m");
return -errno;
}
FOREACH_DIRENT(de, d, return -errno) {
struct Machine *machine;
int k;
if (!dirent_is_file(de))
continue;
k = manager_add_machine(m, de->d_name, &machine);
if (k < 0) {
log_error("Failed to add machine by file name %s: %s", de->d_name, strerror(-k));
r = k;
continue;
}
machine_add_to_gc_queue(machine);
k = machine_load(machine);
if (k < 0)
r = k;
}
return r;
}
@ -1109,6 +1063,43 @@ int manager_get_user_by_cgroup(Manager *m, const char *cgroup, User **user) {
}
}
int manager_get_machine_by_cgroup(Manager *m, const char *cgroup, Machine **machine) {
Machine *u;
char *p;
assert(m);
assert(cgroup);
assert(machine);
u = hashmap_get(m->machine_cgroups, cgroup);
if (u) {
*machine = u;
return 1;
}
p = strdupa(cgroup);
if (!p)
return log_oom();
for (;;) {
char *e;
e = strrchr(p, '/');
if (!e || e == p) {
*machine = NULL;
return 0;
}
*e = 0;
u = hashmap_get(m->machine_cgroups, p);
if (u) {
*machine = u;
return 1;
}
}
}
int manager_get_session_by_pid(Manager *m, pid_t pid, Session **session) {
_cleanup_free_ char *p = NULL;
int r;
@ -1124,7 +1115,38 @@ int manager_get_session_by_pid(Manager *m, pid_t pid, Session **session) {
return manager_get_session_by_cgroup(m, p, session);
}
int manager_get_user_by_pid(Manager *m, pid_t pid, User **user) {
_cleanup_free_ char *p = NULL;
int r;
assert(m);
assert(pid >= 1);
assert(user);
r = cg_pid_get_path(SYSTEMD_CGROUP_CONTROLLER, pid, &p);
if (r < 0)
return r;
return manager_get_user_by_cgroup(m, p, user);
}
int manager_get_machine_by_pid(Manager *m, pid_t pid, Machine **machine) {
_cleanup_free_ char *p = NULL;
int r;
assert(m);
assert(pid >= 1);
assert(machine);
r = cg_pid_get_path(SYSTEMD_CGROUP_CONTROLLER, pid, &p);
if (r < 0)
return r;
return manager_get_machine_by_cgroup(m, p, machine);
}
void manager_cgroup_notify_empty(Manager *m, const char *cgroup) {
Machine *machine;
Session *s;
User *u;
int r;
@ -1136,6 +1158,10 @@ void manager_cgroup_notify_empty(Manager *m, const char *cgroup) {
r = manager_get_user_by_cgroup(m, cgroup, &u);
if (r > 0)
user_add_to_gc_queue(u);
r = manager_get_machine_by_cgroup(m, cgroup, &machine);
if (r > 0)
machine_add_to_gc_queue(machine);
}
static void manager_dispatch_other(Manager *m, int fd) {
@ -1197,6 +1223,7 @@ static int manager_connect_bus(Manager *m) {
!dbus_connection_register_fallback(m->bus, "/org/freedesktop/login1/seat", &bus_seat_vtable, m) ||
!dbus_connection_register_fallback(m->bus, "/org/freedesktop/login1/session", &bus_session_vtable, m) ||
!dbus_connection_register_fallback(m->bus, "/org/freedesktop/login1/user", &bus_user_vtable, m) ||
!dbus_connection_register_fallback(m->bus, "/org/freedesktop/login1/machine", &bus_machine_vtable, m) ||
!dbus_connection_add_filter(m->bus, bus_message_filter, m, NULL)) {
r = log_oom();
goto fail;
@ -1371,6 +1398,7 @@ void manager_gc(Manager *m, bool drop_not_started) {
Seat *seat;
Session *session;
User *user;
Machine *machine;
assert(m);
@ -1403,6 +1431,16 @@ void manager_gc(Manager *m, bool drop_not_started) {
user_free(user);
}
}
while ((machine = m->machine_gc_queue)) {
LIST_REMOVE(Machine, gc_queue, m->machine_gc_queue, machine);
machine->in_gc_queue = false;
if (machine_check_gc(machine, drop_not_started) == 0) {
machine_stop(machine);
machine_free(machine);
}
}
}
int manager_get_idle_hint(Manager *m, dual_timestamp *t) {
@ -1521,6 +1559,7 @@ int manager_startup(Manager *m) {
Session *session;
User *user;
Inhibitor *inhibitor;
Machine *machine;
Iterator i;
assert(m);
@ -1560,6 +1599,7 @@ int manager_startup(Manager *m) {
manager_enumerate_sessions(m);
manager_enumerate_inhibitors(m);
manager_enumerate_buttons(m);
manager_enumerate_machines(m);
/* Remove stale objects before we start them */
manager_gc(m, false);
@ -1580,6 +1620,9 @@ int manager_startup(Manager *m) {
HASHMAP_FOREACH(inhibitor, m->inhibitors, i)
inhibitor_start(inhibitor);
HASHMAP_FOREACH(machine, m->machines, i)
machine_start(machine);
manager_dispatch_idle_action(m);
return 0;
@ -1731,6 +1774,7 @@ int main(int argc, char *argv[]) {
mkdir_label("/run/systemd/seats", 0755);
mkdir_label("/run/systemd/users", 0755);
mkdir_label("/run/systemd/sessions", 0755);
mkdir_label("/run/systemd/machines", 0755);
m = manager_new();
if (!m) {

13
src/login/logind.h
View File

@ -41,6 +41,7 @@ typedef struct Manager Manager;
#include "logind-inhibit.h"
#include "logind-button.h"
#include "logind-action.h"
#include "logind-machine.h"
struct Manager {
DBusConnection *bus;
@ -51,10 +52,12 @@ struct Manager {
Hashmap *users;
Hashmap *inhibitors;
Hashmap *buttons;
Hashmap *machines;
LIST_HEAD(Seat, seat_gc_queue);
LIST_HEAD(Session, session_gc_queue);
LIST_HEAD(User, user_gc_queue);
LIST_HEAD(Machine, machine_gc_queue);
struct udev *udev;
struct udev_monitor *udev_seat_monitor, *udev_vcsa_monitor, *udev_button_monitor;
@ -74,7 +77,7 @@ struct Manager {
Seat *vtconsole;
char *cgroup_path;
char *cgroup_root;
char **controllers, **reset_controllers;
char **kill_only_users, **kill_exclude_users;
@ -86,6 +89,7 @@ struct Manager {
Hashmap *session_cgroups;
Hashmap *user_cgroups;
Hashmap *machine_cgroups;
Hashmap *session_fds;
Hashmap *inhibitor_fds;
@ -139,11 +143,12 @@ void manager_free(Manager *m);
int manager_add_device(Manager *m, const char *sysfs, Device **_device);
int manager_add_button(Manager *m, const char *name, Button **_button);
int manager_add_seat(Manager *m, const char *id, Seat **_seat);
int manager_add_session(Manager *m, User *u, const char *id, Session **_session);
int manager_add_session(Manager *m, const char *id, Session **_session);
int manager_add_user(Manager *m, uid_t uid, gid_t gid, const char *name, User **_user);
int manager_add_user_by_name(Manager *m, const char *name, User **_user);
int manager_add_user_by_uid(Manager *m, uid_t uid, User **_user);
int manager_add_inhibitor(Manager *m, const char* id, Inhibitor **_inhibitor);
int manager_add_machine(Manager *m, const char *name, Machine **_machine);
int manager_process_seat_device(Manager *m, struct udev_device *d);
int manager_process_button_device(Manager *m, struct udev_device *d);
@ -160,6 +165,7 @@ int manager_enumerate_seats(Manager *m);
int manager_enumerate_sessions(Manager *m);
int manager_enumerate_users(Manager *m);
int manager_enumerate_inhibitors(Manager *m);
int manager_enumerate_machines(Manager *m);
int manager_startup(Manager *m);
int manager_run(Manager *m);
@ -172,8 +178,11 @@ void manager_gc(Manager *m, bool drop_not_started);
int manager_get_idle_hint(Manager *m, dual_timestamp *t);
int manager_get_user_by_cgroup(Manager *m, const char *cgroup, User **user);
int manager_get_user_by_pid(Manager *m, pid_t pid, User **user);
int manager_get_session_by_cgroup(Manager *m, const char *cgroup, Session **session);
int manager_get_session_by_pid(Manager *m, pid_t pid, Session **session);
int manager_get_machine_by_cgroup(Manager *m, const char *cgroup, Machine **machine);
int manager_get_machine_by_pid(Manager *m, pid_t pid, Machine **machine);
extern const DBusObjectPathVTable bus_manager_vtable;

4
src/login/sd-login.c
View File

@ -598,7 +598,7 @@ _public_ int sd_get_machine_names(char ***machines) {
char *n;
int c = 0, r;
r = cg_get_machine_path(NULL, &md);
r = cg_get_root_path(&md);
if (r < 0)
return r;
@ -681,7 +681,7 @@ _public_ int sd_login_monitor_new(const char *category, sd_login_monitor **m) {
_cleanup_free_ char *md = NULL, *p = NULL;
int r;
r = cg_get_machine_path(NULL, &md);
r = cg_get_root_path(&md);
if (r < 0)
return r;

121
src/login/user-sessions.c
View File

@ -28,6 +28,106 @@
#include "cgroup-util.h"
#include "fileio.h"
static int kill_all_users(void) {
_cleanup_closedir_ DIR *d = NULL;
struct dirent *de;
int r = 0;
d = opendir("/run/systemd/users");
if (!d) {
if (errno == ENOENT)
return 0;
log_error("Failed to open /run/systemd/users: %m");
return -errno;
}
FOREACH_DIRENT(de, d, return -errno) {
_cleanup_free_ char *cgroup = NULL;
char *a;
int k;
if (!dirent_is_file(de))
continue;
a = strappenda("/run/systemd/users/", de->d_name);
k = parse_env_file(a, NEWLINE, "CGROUP", &cgroup, NULL);
if (k < 0) {
if (k != -ENOENT) {
log_error("Failed to read user data: %s", strerror(-k));
r = k;
}
continue;
}
if (!cgroup) {
log_error("User data did not contain cgroup field.");
r = -ENOENT;
continue;
}
k = cg_kill_recursive_and_wait(SYSTEMD_CGROUP_CONTROLLER, cgroup, true);
if (k < 0) {
log_error("Failed to kill cgroup %s: %s", cgroup, strerror(-k));
r = k;
}
}
return r;
}
static int kill_all_sessions(void) {
_cleanup_closedir_ DIR *d = NULL;
struct dirent *de;
int r = 0;
d = opendir("/run/systemd/sessions");
if (!d) {
if (errno == ENOENT)
return 0;
log_error("Failed to open /run/systemd/sessions: %m");
return -errno;
}
FOREACH_DIRENT(de, d, return -errno) {
_cleanup_free_ char *cgroup = NULL;
char *a;
int k;
if (!dirent_is_file(de))
continue;
a = strappenda("/run/systemd/sessions/", de->d_name);
k = parse_env_file(a, NEWLINE, "CGROUP", &cgroup, NULL);
if (k < 0) {
if (k != -ENOENT) {
log_error("Failed to read session data: %s", strerror(-k));
r = k;
}
continue;
}
if (!cgroup) {
log_error("Session data did not contain cgroup field.");
r = -ENOENT;
continue;
}
k = cg_kill_recursive_and_wait(SYSTEMD_CGROUP_CONTROLLER, cgroup, true);
if (k < 0) {
log_error("Failed to kill cgroup %s: %s", cgroup, strerror(-k));
r = k;
}
}
return r;
}
int main(int argc, char*argv[]) {
int ret = EXIT_FAILURE;
@ -68,27 +168,18 @@ int main(int argc, char*argv[]) {
} else if (streq(argv[1], "stop")) {
int r, q;
char *cgroup_user_tree = NULL;
r = write_string_file_atomic("/run/nologin", "System is going down.");
if (r < 0)
log_error("Failed to create /run/nologin: %s", strerror(-r));
q = cg_get_user_path(&cgroup_user_tree);
if (q < 0) {
log_error("Failed to determine use path: %s", strerror(-q));
goto finish;
}
q = kill_all_users();
if (q < 0 && r >= 0)
r = q;
q = cg_kill_recursive_and_wait(SYSTEMD_CGROUP_CONTROLLER, cgroup_user_tree, true);
free(cgroup_user_tree);
if (q < 0) {
log_error("Failed to kill sessions: %s", strerror(-q));
goto finish;
}
if (r < 0)
goto finish;
q = kill_all_sessions();
if (q < 0 && r >= 0)
r = q;
} else {
log_error("Unknown verb %s.", argv[1]);

171
src/nspawn/nspawn.c
View File

@ -43,11 +43,8 @@
#include <sys/un.h>
#include <sys/socket.h>
#ifdef HAVE_XATTR
#include <attr/xattr.h>
#endif
#include <systemd/sd-daemon.h>
#include <systemd/sd-bus.h>
#include "log.h"
#include "util.h"
@ -64,6 +61,8 @@
#include "fdset.h"
#include "build.h"
#include "fileio.h"
#include "bus-internal.h"
#include "bus-message.h"
#ifndef TTY_GID
#define TTY_GID 5
@ -78,9 +77,9 @@ typedef enum LinkJournal {
static char *arg_directory = NULL;
static char *arg_user = NULL;
static char **arg_controllers = NULL;
static char *arg_uuid = NULL;
static sd_id128_t arg_uuid = {};
static char *arg_machine = NULL;
static const char *arg_slice = NULL;
static bool arg_private_network = false;
static bool arg_read_only = false;
static bool arg_boot = false;
@ -123,10 +122,9 @@ static int help(void) {
" -D --directory=NAME Root directory for the container\n"
" -b --boot Boot up full system (i.e. invoke init)\n"
" -u --user=USER Run the command under specified user or uid\n"
" -C --controllers=LIST Put the container in specified comma-separated\n"
" cgroup hierarchies\n"
" --uuid=UUID Set a specific machine UUID for the container\n"
" -M --machine=NAME Set the machine name for the container\n"
" -S --slice=SLICE Place the container in the specified slice\n"
" --private-network Disable network in container\n"
" --read-only Mount the root directory read-only\n"
" --capability=CAP In addition to the default, retain specified\n"
@ -159,7 +157,6 @@ static int parse_argv(int argc, char *argv[]) {
{ "version", no_argument, NULL, ARG_VERSION },
{ "directory", required_argument, NULL, 'D' },
{ "user", required_argument, NULL, 'u' },
{ "controllers", required_argument, NULL, 'C' },
{ "private-network", no_argument, NULL, ARG_PRIVATE_NETWORK },
{ "boot", no_argument, NULL, 'b' },
{ "uuid", required_argument, NULL, ARG_UUID },
@ -169,15 +166,16 @@ static int parse_argv(int argc, char *argv[]) {
{ "bind", required_argument, NULL, ARG_BIND },
{ "bind-ro", required_argument, NULL, ARG_BIND_RO },
{ "machine", required_argument, NULL, 'M' },
{ "slice", required_argument, NULL, 'S' },
{ NULL, 0, NULL, 0 }
};
int c;
int c, r;
assert(argc >= 0);
assert(argv);
while ((c = getopt_long(argc, argv, "+hD:u:C:bM:j", options, NULL)) >= 0) {
while ((c = getopt_long(argc, argv, "+hD:u:C:bM:jS:", options, NULL)) >= 0) {
switch (c) {
@ -208,15 +206,6 @@ static int parse_argv(int argc, char *argv[]) {
break;
case 'C':
strv_free(arg_controllers);
arg_controllers = strv_split(optarg, ",");
if (!arg_controllers)
return log_oom();
cg_shorten_controllers(arg_controllers);
break;
case ARG_PRIVATE_NETWORK:
arg_private_network = true;
break;
@ -226,12 +215,15 @@ static int parse_argv(int argc, char *argv[]) {
break;
case ARG_UUID:
if (!id128_is_valid(optarg)) {
r = sd_id128_from_string(optarg, &arg_uuid);
if (r < 0) {
log_error("Invalid UUID: %s", optarg);
return -EINVAL;
return r;
}
break;
arg_uuid = optarg;
case 'S':
arg_slice = strdup(optarg);
break;
case 'M':
@ -301,7 +293,6 @@ static int parse_argv(int argc, char *argv[]) {
_cleanup_free_ char *a = NULL, *b = NULL;
char *e;
char ***x;
int r;
x = c == ARG_BIND ? &arg_bind : &arg_bind_ro;
@ -912,68 +903,6 @@ static int setup_journal(const char *directory) {
return 0;
}
static int setup_cgroup(const char *path) {
char **c;
int r;
r = cg_create_and_attach(SYSTEMD_CGROUP_CONTROLLER, path, 1);
if (r < 0) {
log_error("Failed to create cgroup: %s", strerror(-r));
return r;
}
STRV_FOREACH(c, arg_controllers) {
r = cg_create_and_attach(*c, path, 1);
if (r < 0)
log_warning("Failed to create cgroup in controller %s: %s", *c, strerror(-r));
}
return 0;
}
static int save_attributes(const char *cgroup, pid_t pid, const char *uuid, const char *directory) {
#ifdef HAVE_XATTR
_cleanup_free_ char *path = NULL;
char buf[DECIMAL_STR_MAX(pid_t)];
int r = 0, k;
assert(cgroup);
assert(pid >= 0);
assert(arg_directory);
assert_se(snprintf(buf, sizeof(buf), "%lu", (unsigned long) pid) < (int) sizeof(buf));
r = cg_get_path(SYSTEMD_CGROUP_CONTROLLER, cgroup, NULL, &path);
if (r < 0) {
log_error("Failed to get path: %s", strerror(-r));
return r;
}
r = setxattr(path, "trusted.init_pid", buf, strlen(buf), XATTR_CREATE);
if (r < 0)
log_warning("Failed to set %s attribute on %s: %m", "trusted.init_pid", path);
if (uuid) {
k = setxattr(path, "trusted.machine_id", uuid, strlen(uuid), XATTR_CREATE);
if (k < 0) {
log_warning("Failed to set %s attribute on %s: %m", "trusted.machine_id", path);
if (r == 0)
r = k;
}
}
k = setxattr(path, "trusted.root_directory", directory, strlen(directory), XATTR_CREATE);
if (k < 0) {
log_warning("Failed to set %s attribute on %s: %m", "trusted.root_directory", path);
if (r == 0)
r = k;
}
return r;
#else
return 0;
#endif
}
static int drop_capabilities(void) {
return capability_bounding_set_drop(~arg_retain, false);
}
@ -1220,6 +1149,41 @@ finish:
return r;
}
static int register_machine(void) {
_cleanup_bus_error_free_ sd_bus_error error = SD_BUS_ERROR_NULL;
_cleanup_bus_unref_ sd_bus *bus = NULL;
int r;
r = sd_bus_open_system(&bus);
if (r < 0) {
log_error("Failed to open system bus: %s", strerror(-r));
return r;
}
r = sd_bus_call_method(
bus,
"org.freedesktop.login1",
"/org/freedesktop/login1",
"org.freedesktop.login1.Manager",
"CreateMachine",
&error,
NULL,
"sayssuss",
arg_machine,
SD_BUS_APPEND_ID128(arg_uuid),
"nspawn",
"container",
(uint32_t) 0,
strempty(arg_slice),
strempty(arg_directory));
if (r < 0) {
log_error("Failed to register machine: %s", error.message);
return r;
}
return 0;
}
static bool audit_enabled(void) {
int fd;
@ -1234,7 +1198,6 @@ static bool audit_enabled(void) {
int main(int argc, char *argv[]) {
pid_t pid = 0;
int r = EXIT_FAILURE, k;
_cleanup_free_ char *newcg = NULL;
_cleanup_close_ int master = -1;
int n_fd_passed;
const char *console = NULL;
@ -1325,22 +1288,6 @@ int main(int argc, char *argv[]) {
fdset_close_others(fds);
log_open();
k = cg_get_machine_path(arg_machine, &newcg);
if (k < 0) {
log_error("Failed to determine machine cgroup path: %s", strerror(-k));
goto finish;
}
k = cg_is_empty_recursive(SYSTEMD_CGROUP_CONTROLLER, newcg, true);
if (k <= 0 && k != -ENOENT) {
log_error("Container already running.");
free(newcg);
newcg = NULL;
goto finish;
}
master = posix_openpt(O_RDWR|O_NOCTTY|O_CLOEXEC|O_NDELAY);
if (master < 0) {
log_error("Failed to acquire pseudo tty: %m");
@ -1484,11 +1431,12 @@ int main(int argc, char *argv[]) {
goto child_fail;
}
if (setup_cgroup(newcg) < 0)
goto child_fail;
close_pipe(pipefd2);
r = register_machine();
if (r < 0)
goto finish;
/* Mark everything as slave, so that we still
* receive mounts from the real root, but don't
* propagate mounts to the real root. */
@ -1639,8 +1587,8 @@ int main(int argc, char *argv[]) {
goto child_fail;
}
if (arg_uuid) {
if (asprintf((char**)(envp + n_env++), "container_uuid=%s", arg_uuid) < 0) {
if (!sd_id128_equal(arg_uuid, SD_ID128_NULL)) {
if (asprintf((char**)(envp + n_env++), "container_uuid=" SD_ID128_FORMAT_STR, SD_ID128_FORMAT_VAL(arg_uuid)) < 0) {
log_oom();
goto child_fail;
}
@ -1702,8 +1650,6 @@ int main(int argc, char *argv[]) {
fd_wait_for_event(pipefd2[0], POLLHUP, -1);
close_nointr_nofail(pipefd2[0]);
save_attributes(newcg, pid, arg_uuid, arg_directory);
fdset_free(fds);
fds = NULL;
@ -1756,12 +1702,11 @@ finish:
close_pipe(kmsg_socket_pair);
if (newcg)
cg_kill_recursive_and_wait(SYSTEMD_CGROUP_CONTROLLER, newcg, true);
if (pid > 0)
kill(pid, SIGKILL);
free(arg_directory);
free(arg_machine);
strv_free(arg_controllers);
fdset_free(fds);

224
src/shared/cgroup-util.c
View File

@ -38,6 +38,7 @@
#include "strv.h"
#include "unit-name.h"
#include "fileio.h"
#include "special.h"
int cg_enumerate_processes(const char *controller, const char *path, FILE **_f) {
_cleanup_free_ char *fs = NULL;
@ -470,19 +471,19 @@ static const char *normalize_controller(const char *controller) {
static int join_path(const char *controller, const char *path, const char *suffix, char **fs) {
char *t = NULL;
if (controller) {
if (path && suffix)
if (!isempty(controller)) {
if (!isempty(path) && !isempty(suffix))
t = strjoin("/sys/fs/cgroup/", controller, "/", path, "/", suffix, NULL);
else if (path)
else if (!isempty(path))
t = strjoin("/sys/fs/cgroup/", controller, "/", path, NULL);
else if (suffix)
else if (!isempty(suffix))
t = strjoin("/sys/fs/cgroup/", controller, "/", suffix, NULL);
else
t = strappend("/sys/fs/cgroup/", controller);
} else {
if (path && suffix)
if (!isempty(path) && !isempty(suffix))
t = strjoin(path, "/", suffix, NULL);
else if (path)
else if (!isempty(path))
t = strdup(path);
else
return -EINVAL;
@ -1091,96 +1092,20 @@ int cg_mangle_path(const char *path, char **result) {
return cg_get_path(c ? c : SYSTEMD_CGROUP_CONTROLLER, p ? p : "/", NULL, result);
}
int cg_get_system_path(char **path) {
char *p;
int cg_get_root_path(char **path) {
char *p, *e;
int r;
assert(path);
r = cg_pid_get_path(SYSTEMD_CGROUP_CONTROLLER, 1, &p);
if (r < 0) {
p = strdup("/system");
if (!p)
return -ENOMEM;
}
if (endswith(p, "/system"))
*path = p;
else {
char *q;
q = strappend(p, "/system");
free(p);
if (!q)
return -ENOMEM;
*path = q;
}
return 0;
}
int cg_get_root_path(char **path) {
char *root, *e;
int r;
assert(path);
r = cg_pid_get_path(SYSTEMD_CGROUP_CONTROLLER, 1, &root);
if (r < 0)
return r;
e = endswith(root, "/system");
if (e == root)
e[1] = 0;
else if (e)
e = endswith(p, "/" SPECIAL_SYSTEM_SLICE);
if (e)
*e = 0;
*path = root;
return 0;
}
int cg_get_user_path(char **path) {
_cleanup_free_ char *root = NULL;
char *p;
assert(path);
/* Figure out the place to put user cgroups below. We use the
* same as PID 1 has but with the "/system" suffix replaced by
* "/user" */
if (cg_get_root_path(&root) < 0 || streq(root, "/"))
p = strdup("/user");
else
p = strappend(root, "/user");
if (!p)
return -ENOMEM;
*path = p;
return 0;
}
int cg_get_machine_path(const char *machine, char **path) {
_cleanup_free_ char *root = NULL, *escaped = NULL;
char *p;
assert(path);
if (machine) {
const char *name = strappenda(machine, ".nspawn");
escaped = cg_escape(name);
if (!escaped)
return -ENOMEM;
}
p = strjoin(cg_get_root_path(&root) >= 0 && !streq(root, "/") ? root : "",
"/machine", machine ? "/" : "", machine ? escaped : "", NULL);
if (!p)
return -ENOMEM;
*path = p;
return 0;
}
@ -1301,15 +1226,29 @@ int cg_path_decode_unit(const char *cgroup, char **unit){
return 0;
}
static const char *skip_slices(const char *p) {
size_t n;
/* Skips over all slice assignments */
for (;;) {
p += strspn(p, "/");
n = strcspn(p, "/");
if (n <= 6 || memcmp(p + n - 6, ".slice", 6) != 0)
return p;
p += n;
}
}
int cg_path_get_unit(const char *path, char **unit) {
const char *e;
assert(path);
assert(unit);
e = path_startswith(path, "/system/");
if (!e)
return -ENOENT;
e = skip_slices(path);
return cg_path_decode_unit(e, unit);
}
@ -1327,15 +1266,55 @@ int cg_pid_get_unit(pid_t pid, char **unit) {
return cg_path_get_unit(cgroup, unit);
}
_pure_ static const char *skip_label(const char *e) {
assert(e);
static const char *skip_user(const char *p) {
size_t n;
e = strchr(e, '/');
if (!e)
assert(p);
p += strspn(p, "/");
n = strcspn(p, "/");
if (n <= 5 || memcmp(p + n - 5, ".user", 5) != 0)
return p;
p += n;
p += strspn(p, "/");
return p;
}
static const char *skip_session(const char *p) {
size_t n;
assert(p);
p += strspn(p, "/");
n = strcspn(p, "/");
if (n <= 8 || memcmp(p + n - 8, ".session", 8) != 0)
return NULL;
e += strspn(e, "/");
return e;
p += n;
p += strspn(p, "/");
return p;
}
static const char *skip_systemd_label(const char *p) {
size_t n;
assert(p);
p += strspn(p, "/");
n = strcspn(p, "/");
if (n < 8 || memcmp(p, "systemd-", 8) != 0)
return p;
p += n;
p += strspn(p, "/");
return p;
}
int cg_path_get_user_unit(const char *path, char **unit) {
@ -1348,24 +1327,19 @@ int cg_path_get_user_unit(const char *path, char **unit) {
* cgroups might have arbitrary child cgroups and we shouldn't get
* confused by those */
e = path_startswith(path, "/user/");
/* Skip slices, if there are any */
e = skip_slices(path);
/* Skip the user name, if there is one */
e = skip_user(e);
/* Skip the session ID, require that there is one */
e = skip_session(e);
if (!e)
return -ENOENT;
/* Skip the user name */
e = skip_label(e);
if (!e)
return -ENOENT;
/* Skip the session ID */
e = skip_label(e);
if (!e)
return -ENOENT;
/* Skip the systemd cgroup */
e = skip_label(e);
if (!e)
return -ENOENT;
/* Skip the systemd cgroup, if there is one */
e = skip_systemd_label(e);
return cg_path_decode_unit(e, unit);
}
@ -1384,23 +1358,27 @@ int cg_pid_get_user_unit(pid_t pid, char **unit) {
}
int cg_path_get_machine_name(const char *path, char **machine) {
const char *e, *n;
const char *e, *n, *x;
char *s, *r;
assert(path);
assert(machine);
e = path_startswith(path, "/machine/");
if (!e)
return -ENOENT;
/* Skip slices, if there are any */
e = skip_slices(path);
n = strchrnul(e, '/');
if (e == n)
return -ENOENT;
s = strndupa(e, n - e);
s = cg_unescape(s);
r = strdup(cg_unescape(s));
x = endswith(s, ".machine");
if (!x)
return -ENOENT;
r = strndup(s, x - s);
if (!r)
return -ENOMEM;
@ -1428,14 +1406,11 @@ int cg_path_get_session(const char *path, char **session) {
assert(path);
assert(session);
e = path_startswith(path, "/user/");
if (!e)
return -ENOENT;
/* Skip slices, if there are any */
e = skip_slices(path);
/* Skip the user name */
e = skip_label(e);
if (!e)
return -ENOENT;
/* Skip the user name, if there is one */
e = skip_user(e);
n = strchrnul(e, '/');
if (n - e < 8)
@ -1471,9 +1446,8 @@ int cg_path_get_owner_uid(const char *path, uid_t *uid) {
assert(path);
assert(uid);
e = path_startswith(path, "/user/");
if (!e)
return -ENOENT;
/* Skip slices, if there are any */
e = skip_slices(path);
n = strchrnul(e, '/');
if (n - e < 5)

3
src/shared/cgroup-util.h
View File

@ -84,9 +84,6 @@ int cg_is_empty_by_spec(const char *spec, bool ignore_self);
int cg_is_empty_recursive(const char *controller, const char *path, bool ignore_self);
int cg_get_root_path(char **path);
int cg_get_system_path(char **path);
int cg_get_user_path(char **path);
int cg_get_machine_path(const char *machine, char **path);
int cg_path_get_session(const char *path, char **session);
int cg_path_get_owner_uid(const char *path, uid_t *uid);

7
src/shared/unit-name.c
View File

@ -455,7 +455,7 @@ char *unit_name_to_path(const char *name) {
}
char *unit_dbus_path_from_name(const char *name) {
char *e, *p;
_cleanup_free_ char *e = NULL;
assert(name);
@ -463,10 +463,7 @@ char *unit_dbus_path_from_name(const char *name) {
if (!e)
return NULL;
p = strappend("/org/freedesktop/systemd1/unit/", e);
free(e);
return p;
return strappend("/org/freedesktop/systemd1/unit/", e);
}
char *unit_name_mangle(const char *name) {

6
src/systemd/sd-bus.h
View File

@ -205,6 +205,12 @@ int sd_bus_error_copy(sd_bus_error *dest, const sd_bus_error *e);
int sd_bus_error_is_set(const sd_bus_error *e);
int sd_bus_error_has_name(const sd_bus_error *e, const char *name);
#define SD_BUS_APPEND_ID128(x) 16, \
(x).bytes[0], (x).bytes[1], (x).bytes[2], (x).bytes[3], \
(x).bytes[4], (x).bytes[5], (x).bytes[6], (x).bytes[7], \
(x).bytes[8], (x).bytes[9], (x).bytes[10], (x).bytes[11], \
(x).bytes[12], (x).bytes[13], (x).bytes[14], (x).bytes[15]
#ifdef __cplusplus
}
#endif

6
src/systemd/sd-messages.h
View File

@ -31,6 +31,10 @@ extern "C" {
/* Hey! If you add a new message here, you *must* also update the
* message catalog with an appropriate explanation */
/* And if you add a new ID here, make sure to generate a random one
* with journalctl --new-id128. Do not use any other IDs, and do not
* count them up manually. */
#define SD_MESSAGE_JOURNAL_START SD_ID128_MAKE(f7,73,79,a8,49,0b,40,8b,be,5f,69,40,50,5a,77,7b)
#define SD_MESSAGE_JOURNAL_STOP SD_ID128_MAKE(d9,3f,b3,c9,c2,4d,45,1a,97,ce,a6,15,ce,59,c0,0b)
#define SD_MESSAGE_JOURNAL_DROPPED SD_ID128_MAKE(a5,96,d6,fe,7b,fa,49,94,82,8e,72,30,9e,95,d6,1e)
@ -42,6 +46,8 @@ extern "C" {
#define SD_MESSAGE_SESSION_STOP SD_ID128_MAKE(33,54,93,94,24,b4,45,6d,98,02,ca,83,33,ed,42,4a)
#define SD_MESSAGE_SEAT_START SD_ID128_MAKE(fc,be,fc,5d,a2,3d,42,80,93,f9,7c,82,a9,29,0f,7b)
#define SD_MESSAGE_SEAT_STOP SD_ID128_MAKE(e7,85,2b,fe,46,78,4e,d0,ac,cd,e0,4b,c8,64,c2,d5)
#define SD_MESSAGE_MACHINE_START SD_ID128_MAKE(24,d8,d4,45,25,73,40,24,96,06,83,81,a6,31,2d,f2)
#define SD_MESSAGE_MACHINE_STOP SD_ID128_MAKE(58,43,2b,d3,ba,ce,47,7c,b5,14,b5,63,81,b8,a7,58)
#define SD_MESSAGE_TIME_CHANGE SD_ID128_MAKE(c7,a7,87,07,9b,35,4e,aa,a9,e7,7b,37,18,93,cd,27)
#define SD_MESSAGE_TIMEZONE_CHANGE SD_ID128_MAKE(45,f8,2f,4a,ef,7a,4b,bf,94,2c,e8,61,d1,f2,09,90)

89
src/test/test-cgroup-util.c
View File

@ -47,6 +47,17 @@ static void check_p_g_u(const char *path, int code, const char *result) {
assert_se(streq_ptr(unit, result));
}
static void test_path_get_unit(void) {
check_p_g_u("/system.slice/foobar.service/sdfdsaf", 0, "foobar.service");
check_p_g_u("/system.slice/getty@.service/getty@tty5.service", 0, "getty@tty5.service");
check_p_g_u("/system.slice/getty@.service/getty@tty5.service/aaa/bbb", 0, "getty@tty5.service");
check_p_g_u("/system.slice/getty@.service/getty@tty5.service/", 0, "getty@tty5.service");
check_p_g_u("/system.slice/getty@tty6.service/tty5", 0, "getty@tty6.service");
check_p_g_u("sadfdsafsda", -EINVAL, NULL);
check_p_g_u("/system.slice/getty####@tty6.service/tty5", -EINVAL, NULL);
check_p_g_u("/system.slice/system-waldo.slice/foobar.service/sdfdsaf", 0, "foobar.service");
}
static void check_p_g_u_u(const char *path, int code, const char *result) {
_cleanup_free_ char *unit = NULL;
@ -54,39 +65,64 @@ static void check_p_g_u_u(const char *path, int code, const char *result) {
assert_se(streq_ptr(unit, result));
}
static void test_path_get_unit(void) {
check_p_g_u("/system/foobar.service/sdfdsaf", 0, "foobar.service");
check_p_g_u("/system/getty@.service/getty@tty5.service", 0, "getty@tty5.service");
check_p_g_u("/system/getty@.service/getty@tty5.service/aaa/bbb", 0, "getty@tty5.service");
check_p_g_u("/system/getty@.service/getty@tty5.service/", 0, "getty@tty5.service");
check_p_g_u("/system/getty@tty6.service/tty5", 0, "getty@tty6.service");
check_p_g_u("sadfdsafsda", -ENOENT, NULL);
check_p_g_u("/system/getty####@tty6.service/tty5", -EINVAL, NULL);
static void test_path_get_user_unit(void) {
check_p_g_u_u("/user.slice/1000.user/2.session/systemd-21548/foobar.service", 0, "foobar.service");
check_p_g_u_u("/user.slice/1002.user/2.session/systemd-21548/foobar.service/waldo", 0, "foobar.service");
check_p_g_u_u("/user.slice/1000.user/2.session/systemd-21548/foobar.service/waldo/uuuux", 0, "foobar.service");
check_p_g_u_u("/user.slice/1000.user/2.session/systemd-21548/waldo/waldo/uuuux", -EINVAL, NULL);
check_p_g_u_u("/user.slice/1000.user/2.session/foobar.service", 0, "foobar.service");
check_p_g_u_u("/user.slice/1000.user/2.session/systemd-21548/foobar@.service/foobar@pie.service/pa/po", 0, "foobar@pie.service");
check_p_g_u_u("/2.session/systemd-21548/foobar@.service/foobar@pie.service/pa/po", 0, "foobar@pie.service");
check_p_g_u_u("/xyz.slice/xyz-waldo.slice/77.session/systemd-21548/foobar@.service/foobar@pie.service/pa/po", 0, "foobar@pie.service");
check_p_g_u_u("/meh.service", -ENOENT, NULL);
}
static void test_path_get_user_unit(void) {
check_p_g_u_u("/user/lennart/2/systemd-21548/foobar.service", 0, "foobar.service");
check_p_g_u_u("/user/lennart/2/systemd-21548/foobar.service/waldo", 0, "foobar.service");
check_p_g_u_u("/user/lennart/2/systemd-21548/foobar.service/waldo/uuuux", 0, "foobar.service");
check_p_g_u_u("/user/lennart/2/systemd-21548/waldo/waldo/uuuux", -EINVAL, NULL);
check_p_g_u_u("/user/lennart/2/foobar.service", -ENOENT, NULL);
check_p_g_u_u("/user/lennart/2/systemd-21548/foobar@.service/foobar@pie.service/pa/po", 0, "foobar@pie.service");
static void check_p_g_s(const char *path, int code, const char *result) {
_cleanup_free_ char *s = NULL;
assert_se(cg_path_get_session(path, &s) == code);
assert_se(streq_ptr(s, result));
}
static void test_path_get_session(void) {
check_p_g_s("/user.slice/1000.user/2.session/systemd-21548/foobar.service", 0, "2");
check_p_g_s("/3.session", 0, "3");
check_p_g_s("", -ENOENT, 0);
}
static void check_p_g_o_u(const char *path, int code, uid_t result) {
uid_t uid = 0;
assert_se(cg_path_get_owner_uid(path, &uid) == code);
assert_se(uid == result);
}
static void test_path_get_owner_uid(void) {
check_p_g_o_u("/user.slice/1000.user/2.session/systemd-21548/foobar.service", 0, 1000);
check_p_g_o_u("/1006.user", 0, 1006);
check_p_g_o_u("", -ENOENT, 0);
}
static void check_p_g_m_n(const char *path, int code, const char *result) {
_cleanup_free_ char *m = NULL;
assert_se(cg_path_get_machine_name(path, &m) == code);
assert_se(streq_ptr(m, result));
}
static void test_path_get_machine_name(void) {
check_p_g_m_n("/user.slice/foobar.machine", 0, "foobar");
check_p_g_m_n("/foobar.machine", 0, "foobar");
check_p_g_m_n("/user.slice/user-kuux.slice/foobar.machine", 0, "foobar");
check_p_g_m_n("/user.slice/user-kuux.slice/foobar.machine/asjhdkj", 0, "foobar");
check_p_g_m_n("", -ENOENT, NULL);
}
static void test_get_paths(void) {
_cleanup_free_ char *a = NULL, *b = NULL, *c = NULL, *d = NULL;
_cleanup_free_ char *a = NULL;
assert_se(cg_get_root_path(&a) >= 0);
log_info("Root = %s", a);
assert_se(cg_get_system_path(&b) >= 0);
log_info("System = %s", b);
assert_se(cg_get_user_path(&c) >= 0);
log_info("User = %s", c);
assert_se(cg_get_machine_path("harley", &d) >= 0);
log_info("Machine = %s", d);
}
static void test_proc(void) {
@ -193,6 +229,9 @@ int main(void) {
test_path_decode_unit();
test_path_get_unit();
test_path_get_user_unit();
test_path_get_session();
test_path_get_owner_uid();
test_path_get_machine_name();
test_get_paths();
test_proc();
test_escape();

4
units/machine.slice
View File

@ -8,6 +8,4 @@
[Unit]
Description=Virtual Machine and Container Slice
Documentation=man:systemd.special(7)
[Install]
WantedBy=slices.target
Before=slices.target

1
units/system.slice
View File

@ -9,3 +9,4 @@
Description=System Slice
Documentation=man:systemd.special(7)
DefaultDependencies=no
Before=slices.target

3
units/systemd-logind.service.in
View File

@ -9,7 +9,8 @@
Description=Login Service
Documentation=man:systemd-logind.service(8) man:logind.conf(5)
Documentation=http://www.freedesktop.org/wiki/Software/systemd/multiseat
After=nss-user-lookup.target
Wants=user.slice machine.slice
After=nss-user-lookup.target user.slice machine.slice
[Service]
ExecStart=@rootlibexecdir@/systemd-logind

4
units/user.slice
View File

@ -8,6 +8,4 @@
[Unit]
Description=User and Session Slice
Documentation=man:systemd.special(7)
[Install]
WantedBy=slices.target
Before=slices.target