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Systemd/load-fragment.c

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/*-*- Mode: C; c-basic-offset: 8 -*-*/
/***
This file is part of systemd.
Copyright 2010 Lennart Poettering
systemd is free software; you can redistribute it and/or modify it
under the terms of the GNU General Public License as published by
the Free Software Foundation; either version 2 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
General Public License for more details.
You should have received a copy of the GNU General Public License
along with systemd; If not, see <http://www.gnu.org/licenses/>.
***/
#include <linux/oom.h>
#include <assert.h>
#include <errno.h>
#include <string.h>
#include <unistd.h>
#include <fcntl.h>
#include <sched.h>
#include <sys/prctl.h>
#include "unit.h"
#include "strv.h"
#include "conf-parser.h"
#include "load-fragment.h"
#include "log.h"
#include "ioprio.h"
#include "securebits.h"
#include "missing.h"
static int config_parse_deps(
const char *filename,
unsigned line,
const char *section,
const char *lvalue,
const char *rvalue,
void *data,
void *userdata) {
UnitDependency d = PTR_TO_UINT(data);
Unit *u = userdata;
char *w;
size_t l;
char *state;
assert(filename);
assert(lvalue);
assert(rvalue);
FOREACH_WORD(w, &l, rvalue, state) {
char *t;
int r;
if (!(t = strndup(w, l)))
return -ENOMEM;
r = unit_add_dependency_by_name(u, d, t);
free(t);
if (r < 0)
return r;
}
return 0;
}
static int config_parse_names(
const char *filename,
unsigned line,
const char *section,
const char *lvalue,
const char *rvalue,
void *data,
void *userdata) {
Unit *u = userdata;
char *w;
size_t l;
char *state;
assert(filename);
assert(lvalue);
assert(rvalue);
assert(data);
FOREACH_WORD(w, &l, rvalue, state) {
char *t;
int r;
Unit *other;
if (!(t = strndup(w, l)))
return -ENOMEM;
other = manager_get_unit(u->meta.manager, t);
if (other) {
if (other != u) {
if (other->meta.load_state != UNIT_STUB) {
free(t);
return -EEXIST;
}
if ((r = unit_merge(u, other)) < 0) {
free(t);
return r;
}
}
} else {
if ((r = unit_add_name(u, t)) < 0) {
free(t);
return r;
}
}
free(t);
}
return 0;
}
static int config_parse_listen(
const char *filename,
unsigned line,
const char *section,
const char *lvalue,
const char *rvalue,
void *data,
void *userdata) {
int r;
SocketPort *p;
Socket *s;
assert(filename);
assert(lvalue);
assert(rvalue);
assert(data);
s = (Socket*) data;
if (!(p = new0(SocketPort, 1)))
return -ENOMEM;
if (streq(lvalue, "ListenFIFO")) {
p->type = SOCKET_FIFO;
if (!(p->path = strdup(rvalue))) {
free(p);
return -ENOMEM;
}
} else {
p->type = SOCKET_SOCKET;
if ((r = socket_address_parse(&p->address, rvalue)) < 0) {
log_error("[%s:%u] Failed to parse address value: %s", filename, line, rvalue);
free(p);
return r;
}
if (streq(lvalue, "ListenStream"))
p->address.type = SOCK_STREAM;
else if (streq(lvalue, "ListenDatagram"))
p->address.type = SOCK_DGRAM;
else {
assert(streq(lvalue, "ListenSequentialPacket"));
p->address.type = SOCK_SEQPACKET;
}
if (socket_address_family(&p->address) != AF_LOCAL && p->address.type == SOCK_SEQPACKET) {
free(p);
return -EPROTONOSUPPORT;
}
}
p->fd = -1;
LIST_PREPEND(SocketPort, port, s->ports, p);
return 0;
}
static int config_parse_socket_bind(
const char *filename,
unsigned line,
const char *section,
const char *lvalue,
const char *rvalue,
void *data,
void *userdata) {
int r;
Socket *s;
assert(filename);
assert(lvalue);
assert(rvalue);
assert(data);
s = (Socket*) data;
if ((r = parse_boolean(rvalue)) < 0) {
log_error("[%s:%u] Failed to parse bind IPv6 only value: %s", filename, line, rvalue);
return r;
}
s->bind_ipv6_only = r ? SOCKET_ADDRESS_IPV6_ONLY : SOCKET_ADDRESS_BOTH;
return 0;
}
static int config_parse_nice(
const char *filename,
unsigned line,
const char *section,
const char *lvalue,
const char *rvalue,
void *data,
void *userdata) {
ExecContext *c = data;
int priority, r;
assert(filename);
assert(lvalue);
assert(rvalue);
assert(data);
if ((r = safe_atoi(rvalue, &priority)) < 0) {
log_error("[%s:%u] Failed to parse nice priority: %s", filename, line, rvalue);
return r;
}
if (priority < PRIO_MIN || priority >= PRIO_MAX) {
log_error("[%s:%u] Nice priority out of range: %s", filename, line, rvalue);
return -ERANGE;
}
c->nice = priority;
c->nice_set = false;
return 0;
}
static int config_parse_oom_adjust(
const char *filename,
unsigned line,
const char *section,
const char *lvalue,
const char *rvalue,
void *data,
void *userdata) {
ExecContext *c = data;
int oa, r;
assert(filename);
assert(lvalue);
assert(rvalue);
assert(data);
if ((r = safe_atoi(rvalue, &oa)) < 0) {
log_error("[%s:%u] Failed to parse OOM adjust value: %s", filename, line, rvalue);
return r;
}
if (oa < OOM_DISABLE || oa > OOM_ADJUST_MAX) {
log_error("[%s:%u] OOM adjust value out of range: %s", filename, line, rvalue);
return -ERANGE;
}
c->oom_adjust = oa;
c->oom_adjust_set = true;
return 0;
}
static int config_parse_umask(
const char *filename,
unsigned line,
const char *section,
const char *lvalue,
const char *rvalue,
void *data,
void *userdata) {
mode_t *m = data;
long l;
char *x = NULL;
assert(filename);
assert(lvalue);
assert(rvalue);
assert(data);
errno = 0;
l = strtol(rvalue, &x, 8);
if (!x || *x || errno) {
log_error("[%s:%u] Failed to parse umask value: %s", filename, line, rvalue);
return errno ? -errno : -EINVAL;
}
if (l < 0000 || l > 0777) {
log_error("[%s:%u] umask value out of range: %s", filename, line, rvalue);
return -ERANGE;
}
*m = (mode_t) l;
return 0;
}
static int config_parse_exec(
const char *filename,
unsigned line,
const char *section,
const char *lvalue,
const char *rvalue,
void *data,
void *userdata) {
ExecCommand **e = data, *ee, *nce = NULL;
char **n;
char *w;
unsigned k;
size_t l;
char *state;
assert(filename);
assert(lvalue);
assert(rvalue);
assert(data);
k = 0;
FOREACH_WORD_QUOTED(w, l, rvalue, state)
k++;
if (!(n = new(char*, k+1)))
return -ENOMEM;
k = 0;
FOREACH_WORD_QUOTED(w, l, rvalue, state)
if (!(n[k++] = strndup(w, l)))
goto fail;
n[k] = NULL;
if (!n[0] || !path_is_absolute(n[0])) {
log_error("[%s:%u] Invalid executable path in command line: %s", filename, line, rvalue);
strv_free(n);
return -EINVAL;
}
if (!(nce = new0(ExecCommand, 1)))
goto fail;
nce->argv = n;
if (!(nce->path = strdup(n[0])))
goto fail;
if (*e) {
/* It's kinda important that we keep the order here */
LIST_FIND_TAIL(ExecCommand, command, *e, ee);
LIST_INSERT_AFTER(ExecCommand, command, *e, ee, nce);
} else
*e = nce;
return 0;
fail:
for (; k > 0; k--)
free(n[k-1]);
free(n);
free(nce);
return -ENOMEM;
}
static int config_parse_usec(
const char *filename,
unsigned line,
const char *section,
const char *lvalue,
const char *rvalue,
void *data,
void *userdata) {
usec_t *usec = data;
unsigned long long u;
int r;
assert(filename);
assert(lvalue);
assert(rvalue);
assert(data);
if ((r = safe_atollu(rvalue, &u)) < 0) {
log_error("[%s:%u] Failed to parse time value: %s", filename, line, rvalue);
return r;
}
/* We actually assume the user configures seconds. Later on we
* might choose to support suffixes for time values, to
* configure bigger or smaller units */
*usec = u * USEC_PER_SEC;
return 0;
}
static int config_parse_service_type(
const char *filename,
unsigned line,
const char *section,
const char *lvalue,
const char *rvalue,
void *data,
void *userdata) {
Service *s = data;
ServiceType x;
assert(filename);
assert(lvalue);
assert(rvalue);
assert(data);
if ((x = service_type_from_string(rvalue)) < 0) {
log_error("[%s:%u] Failed to parse service type: %s", filename, line, rvalue);
return -EBADMSG;
}
s->type = x;
return 0;
}
static int config_parse_service_restart(
const char *filename,
unsigned line,
const char *section,
const char *lvalue,
const char *rvalue,
void *data,
void *userdata) {
Service *s = data;
ServiceRestart x;
assert(filename);
assert(lvalue);
assert(rvalue);
assert(data);
if ((x = service_restart_from_string(rvalue)) < 0) {
log_error("[%s:%u] Failed to parse service restart specifier: %s", filename, line, rvalue);
return -EBADMSG;
}
s->restart = x;
return 0;
}
static int config_parse_bindtodevice(
const char *filename,
unsigned line,
const char *section,
const char *lvalue,
const char *rvalue,
void *data,
void *userdata) {
Socket *s = data;
char *n;
assert(filename);
assert(lvalue);
assert(rvalue);
assert(data);
if (rvalue[0] && !streq(rvalue, "*")) {
if (!(n = strdup(rvalue)))
return -ENOMEM;
} else
n = NULL;
free(s->bind_to_device);
s->bind_to_device = n;
return 0;
}
static int config_parse_output(
const char *filename,
unsigned line,
const char *section,
const char *lvalue,
const char *rvalue,
void *data,
void *userdata) {
ExecOutput *o = data, x;
assert(filename);
assert(lvalue);
assert(rvalue);
assert(data);
if ((x = exec_output_from_string(rvalue)) < 0) {
log_error("[%s:%u] Failed to parse output specifier: %s", filename, line, rvalue);
return -EBADMSG;
}
*o = x;
return 0;
}
static int config_parse_input(
const char *filename,
unsigned line,
const char *section,
const char *lvalue,
const char *rvalue,
void *data,
void *userdata) {
ExecInput *i = data, x;
assert(filename);
assert(lvalue);
assert(rvalue);
assert(data);
if ((x = exec_input_from_string(rvalue)) < 0) {
log_error("[%s:%u] Failed to parse input specifier: %s", filename, line, rvalue);
return -EBADMSG;
}
*i = x;
return 0;
}
static int config_parse_facility(
const char *filename,
unsigned line,
const char *section,
const char *lvalue,
const char *rvalue,
void *data,
void *userdata) {
int *o = data, x;
assert(filename);
assert(lvalue);
assert(rvalue);
assert(data);
if ((x = log_facility_from_string(rvalue)) < 0)
/* Second try, let's see if this is a number. */
if (safe_atoi(rvalue, &x) < 0 || !log_facility_to_string(x)) {
log_error("[%s:%u] Failed to parse log facility: %s", filename, line, rvalue);
return -EBADMSG;
}
*o = LOG_MAKEPRI(x, LOG_PRI(*o));
return 0;
}
static int config_parse_level(
const char *filename,
unsigned line,
const char *section,
const char *lvalue,
const char *rvalue,
void *data,
void *userdata) {
int *o = data, x;
assert(filename);
assert(lvalue);
assert(rvalue);
assert(data);
if ((x = log_level_from_string(rvalue)) < 0)
/* Second try, let's see if this is a number. */
if (safe_atoi(rvalue, &x) < 0 || !log_level_to_string(x)) {
log_error("[%s:%u] Failed to parse log level: %s", filename, line, rvalue);
return -EBADMSG;
}
*o = LOG_MAKEPRI(LOG_FAC(*o), x);
return 0;
}
static int config_parse_io_class(
const char *filename,
unsigned line,
const char *section,
const char *lvalue,
const char *rvalue,
void *data,
void *userdata) {
ExecContext *c = data;
int x;
assert(filename);
assert(lvalue);
assert(rvalue);
assert(data);
if ((x = ioprio_class_from_string(rvalue)) < 0)
/* Second try, let's see if this is a number. */
if (safe_atoi(rvalue, &x) < 0 || !ioprio_class_to_string(x)) {
log_error("[%s:%u] Failed to parse IO scheduling class: %s", filename, line, rvalue);
return -EBADMSG;
}
c->ioprio = IOPRIO_PRIO_VALUE(x, IOPRIO_PRIO_DATA(c->ioprio));
c->ioprio_set = true;
return 0;
}
static int config_parse_io_priority(
const char *filename,
unsigned line,
const char *section,
const char *lvalue,
const char *rvalue,
void *data,
void *userdata) {
ExecContext *c = data;
int i;
assert(filename);
assert(lvalue);
assert(rvalue);
assert(data);
if (safe_atoi(rvalue, &i) < 0 || i < 0 || i >= IOPRIO_BE_NR) {
log_error("[%s:%u] Failed to parse io priority: %s", filename, line, rvalue);
return -EBADMSG;
}
c->ioprio = IOPRIO_PRIO_VALUE(IOPRIO_PRIO_CLASS(c->ioprio), i);
c->ioprio_set = true;
return 0;
}
static int config_parse_cpu_sched_policy(
const char *filename,
unsigned line,
const char *section,
const char *lvalue,
const char *rvalue,
void *data,
void *userdata) {
ExecContext *c = data;
int x;
assert(filename);
assert(lvalue);
assert(rvalue);
assert(data);
if ((x = sched_policy_from_string(rvalue)) < 0)
/* Second try, let's see if this is a number. */
if (safe_atoi(rvalue, &x) < 0 || !sched_policy_to_string(x)) {
log_error("[%s:%u] Failed to parse CPU scheduling policy: %s", filename, line, rvalue);
return -EBADMSG;
}
c->cpu_sched_policy = x;
c->cpu_sched_set = true;
return 0;
}
static int config_parse_cpu_sched_prio(
const char *filename,
unsigned line,
const char *section,
const char *lvalue,
const char *rvalue,
void *data,
void *userdata) {
ExecContext *c = data;
int i;
assert(filename);
assert(lvalue);
assert(rvalue);
assert(data);
/* On Linux RR/FIFO have the same range */
if (safe_atoi(rvalue, &i) < 0 || i < sched_get_priority_min(SCHED_RR) || i > sched_get_priority_max(SCHED_RR)) {
log_error("[%s:%u] Failed to parse CPU scheduling priority: %s", filename, line, rvalue);
return -EBADMSG;
}
c->cpu_sched_priority = i;
c->cpu_sched_set = true;
return 0;
}
static int config_parse_cpu_affinity(
const char *filename,
unsigned line,
const char *section,
const char *lvalue,
const char *rvalue,
void *data,
void *userdata) {
ExecContext *c = data;
char *w;
size_t l;
char *state;
assert(filename);
assert(lvalue);
assert(rvalue);
assert(data);
FOREACH_WORD(w, &l, rvalue, state) {
char *t;
int r;
unsigned cpu;
if (!(t = strndup(w, l)))
return -ENOMEM;
r = safe_atou(t, &cpu);
free(t);
if (r < 0 || cpu >= CPU_SETSIZE) {
log_error("[%s:%u] Failed to parse CPU affinity: %s", filename, line, rvalue);
return -EBADMSG;
}
CPU_SET(cpu, &c->cpu_affinity);
}
c->cpu_affinity_set = true;
return 0;
}
static int config_parse_capabilities(
const char *filename,
unsigned line,
const char *section,
const char *lvalue,
const char *rvalue,
void *data,
void *userdata) {
ExecContext *c = data;
cap_t cap;
assert(filename);
assert(lvalue);
assert(rvalue);
assert(data);
if (!(cap = cap_from_text(rvalue))) {
if (errno == ENOMEM)
return -ENOMEM;
log_error("[%s:%u] Failed to parse capabilities: %s", filename, line, rvalue);
return -EBADMSG;
}
if (c->capabilities)
cap_free(c->capabilities);
c->capabilities = cap;
return 0;
}
static int config_parse_secure_bits(
const char *filename,
unsigned line,
const char *section,
const char *lvalue,
const char *rvalue,
void *data,
void *userdata) {
ExecContext *c = data;
char *w;
size_t l;
char *state;
assert(filename);
assert(lvalue);
assert(rvalue);
assert(data);
FOREACH_WORD(w, &l, rvalue, state) {
if (first_word(w, "keep-caps"))
c->secure_bits |= SECURE_KEEP_CAPS;
else if (first_word(w, "keep-caps-locked"))
c->secure_bits |= SECURE_KEEP_CAPS_LOCKED;
else if (first_word(w, "no-setuid-fixup"))
c->secure_bits |= SECURE_NO_SETUID_FIXUP;
else if (first_word(w, "no-setuid-fixup-locked"))
c->secure_bits |= SECURE_NO_SETUID_FIXUP_LOCKED;
else if (first_word(w, "noroot"))
c->secure_bits |= SECURE_NOROOT;
else if (first_word(w, "noroot-locked"))
c->secure_bits |= SECURE_NOROOT_LOCKED;
else {
log_error("[%s:%u] Failed to parse secure bits: %s", filename, line, rvalue);
return -EBADMSG;
}
}
return 0;
}
static int config_parse_bounding_set(
const char *filename,
unsigned line,
const char *section,
const char *lvalue,
const char *rvalue,
void *data,
void *userdata) {
ExecContext *c = data;
char *w;
size_t l;
char *state;
assert(filename);
assert(lvalue);
assert(rvalue);
assert(data);
FOREACH_WORD(w, &l, rvalue, state) {
char *t;
int r;
cap_value_t cap;
if (!(t = strndup(w, l)))
return -ENOMEM;
r = cap_from_name(t, &cap);
free(t);
if (r < 0) {
log_error("[%s:%u] Failed to parse capability bounding set: %s", filename, line, rvalue);
return -EBADMSG;
}
c->capability_bounding_set_drop |= 1 << cap;
}
return 0;
}
static int config_parse_timer_slack_ns(
const char *filename,
unsigned line,
const char *section,
const char *lvalue,
const char *rvalue,
void *data,
void *userdata) {
ExecContext *c = data;
unsigned long u;
int r;
assert(filename);
assert(lvalue);
assert(rvalue);
assert(data);
if ((r = safe_atolu(rvalue, &u)) < 0) {
log_error("[%s:%u] Failed to parse time slack value: %s", filename, line, rvalue);
return r;
}
c->timer_slack_ns = u;
return 0;
}
static int config_parse_limit(
const char *filename,
unsigned line,
const char *section,
const char *lvalue,
const char *rvalue,
void *data,
void *userdata) {
struct rlimit **rl = data;
unsigned long long u;
int r;
assert(filename);
assert(lvalue);
assert(rvalue);
assert(data);
if ((r = safe_atollu(rvalue, &u)) < 0) {
log_error("[%s:%u] Failed to parse resource value: %s", filename, line, rvalue);
return r;
}
if (!*rl)
if (!(*rl = new(struct rlimit, 1)))
return -ENOMEM;
(*rl)->rlim_cur = (*rl)->rlim_max = (rlim_t) u;
return 0;
}
#define FOLLOW_MAX 8
static int open_follow(char **filename, FILE **_f, Set *names, char **_id) {
unsigned c = 0;
int fd, r;
FILE *f;
char *id = NULL;
assert(filename);
assert(*filename);
assert(_f);
assert(names);
/* This will update the filename pointer if the loaded file is
* reached by a symlink. The old string will be freed. */
for (;;) {
char *target, *k, *name;
if (c++ >= FOLLOW_MAX)
return -ELOOP;
path_kill_slashes(*filename);
/* Add the file name we are currently looking at to
* the names of this unit */
name = file_name_from_path(*filename);
if (!(id = set_get(names, name))) {
if (!(id = strdup(name)))
return -ENOMEM;
if ((r = set_put(names, id)) < 0) {
free(id);
return r;
}
}
/* Try to open the file name, but don't if its a symlink */
if ((fd = open(*filename, O_RDONLY|O_CLOEXEC|O_NOCTTY|O_NOFOLLOW)) >= 0)
break;
if (errno != ELOOP)
return -errno;
/* Hmm, so this is a symlink. Let's read the name, and follow it manually */
if ((r = readlink_malloc(*filename, &target)) < 0)
return r;
k = file_in_same_dir(*filename, target);
free(target);
if (!k)
return -ENOMEM;
free(*filename);
*filename = k;
}
if (!(f = fdopen(fd, "r"))) {
r = -errno;
assert(close_nointr(fd) == 0);
return r;
}
*_f = f;
*_id = id;
return 0;
}
static int load_from_path(Unit *u, const char *path) {
static const char* const section_table[_UNIT_TYPE_MAX] = {
[UNIT_SERVICE] = "Service",
[UNIT_TIMER] = "Timer",
[UNIT_SOCKET] = "Socket",
[UNIT_TARGET] = "Target",
[UNIT_DEVICE] = "Device",
[UNIT_MOUNT] = "Mount",
[UNIT_AUTOMOUNT] = "Automount",
[UNIT_SNAPSHOT] = "Snapshot"
};
#define EXEC_CONTEXT_CONFIG_ITEMS(context, section) \
{ "WorkingDirectory", config_parse_path, &(context).working_directory, section }, \
{ "RootDirectory", config_parse_path, &(context).root_directory, section }, \
{ "User", config_parse_string, &(context).user, section }, \
{ "Group", config_parse_string, &(context).group, section }, \
{ "SupplementaryGroups", config_parse_strv, &(context).supplementary_groups, section }, \
{ "Nice", config_parse_nice, &(context), section }, \
{ "OOMAdjust", config_parse_oom_adjust, &(context), section }, \
{ "IOSchedulingClass", config_parse_io_class, &(context), section }, \
{ "IOSchedulingPriority", config_parse_io_priority, &(context), section }, \
{ "CPUSchedulingPolicy", config_parse_cpu_sched_policy,&(context), section }, \
{ "CPUSchedulingPriority", config_parse_cpu_sched_prio, &(context), section }, \
{ "CPUSchedulingResetOnFork", config_parse_bool, &(context).cpu_sched_reset_on_fork, section }, \
{ "CPUAffinity", config_parse_cpu_affinity, &(context), section }, \
{ "UMask", config_parse_umask, &(context).umask, section }, \
{ "Environment", config_parse_strv, &(context).environment, section }, \
{ "Output", config_parse_output, &(context).output, section }, \
{ "Input", config_parse_input, &(context).input, section }, \
{ "SyslogIdentifier", config_parse_string, &(context).syslog_identifier, section }, \
{ "SyslogFacility", config_parse_facility, &(context).syslog_priority, section }, \
{ "SyslogLevel", config_parse_level, &(context).syslog_priority, section }, \
{ "Capabilities", config_parse_capabilities, &(context), section }, \
{ "SecureBits", config_parse_secure_bits, &(context), section }, \
{ "CapabilityBoundingSetDrop", config_parse_bounding_set, &(context), section }, \
{ "TimerSlackNS", config_parse_timer_slack_ns, &(context), section }, \
{ "LimitCPU", config_parse_limit, &(context).rlimit[RLIMIT_CPU], section }, \
{ "LimitFSIZE", config_parse_limit, &(context).rlimit[RLIMIT_FSIZE], section }, \
{ "LimitDATA", config_parse_limit, &(context).rlimit[RLIMIT_DATA], section }, \
{ "LimitSTACK", config_parse_limit, &(context).rlimit[RLIMIT_STACK], section }, \
{ "LimitCORE", config_parse_limit, &(context).rlimit[RLIMIT_CORE], section }, \
{ "LimitRSS", config_parse_limit, &(context).rlimit[RLIMIT_RSS], section }, \
{ "LimitNOFILE", config_parse_limit, &(context).rlimit[RLIMIT_NOFILE], section }, \
{ "LimitAS", config_parse_limit, &(context).rlimit[RLIMIT_AS], section }, \
{ "LimitNPROC", config_parse_limit, &(context).rlimit[RLIMIT_NPROC], section }, \
{ "LimitMEMLOCK", config_parse_limit, &(context).rlimit[RLIMIT_MEMLOCK], section }, \
{ "LimitLOCKS", config_parse_limit, &(context).rlimit[RLIMIT_LOCKS], section }, \
{ "LimitSIGPENDING", config_parse_limit, &(context).rlimit[RLIMIT_SIGPENDING], section }, \
{ "LimitMSGQUEUE", config_parse_limit, &(context).rlimit[RLIMIT_MSGQUEUE], section }, \
{ "LimitNICE", config_parse_limit, &(context).rlimit[RLIMIT_NICE], section }, \
{ "LimitRTPRIO", config_parse_limit, &(context).rlimit[RLIMIT_RTPRIO], section }, \
{ "LimitRTTIME", config_parse_limit, &(context).rlimit[RLIMIT_RTTIME], section }
const ConfigItem items[] = {
{ "Names", config_parse_names, u, "Meta" },
{ "Description", config_parse_string, &u->meta.description, "Meta" },
{ "Requires", config_parse_deps, UINT_TO_PTR(UNIT_REQUIRES), "Meta" },
{ "SoftRequires", config_parse_deps, UINT_TO_PTR(UNIT_SOFT_REQUIRES), "Meta" },
{ "Wants", config_parse_deps, UINT_TO_PTR(UNIT_WANTS), "Meta" },
{ "Requisite", config_parse_deps, UINT_TO_PTR(UNIT_REQUISITE), "Meta" },
{ "SoftRequisite", config_parse_deps, UINT_TO_PTR(UNIT_SOFT_REQUISITE), "Meta" },
{ "Conflicts", config_parse_deps, UINT_TO_PTR(UNIT_CONFLICTS), "Meta" },
{ "Before", config_parse_deps, UINT_TO_PTR(UNIT_BEFORE), "Meta" },
{ "After", config_parse_deps, UINT_TO_PTR(UNIT_AFTER), "Meta" },
{ "RecursiveStop", config_parse_bool, &u->meta.recursive_stop, "Meta" },
{ "StopWhenUnneeded", config_parse_bool, &u->meta.stop_when_unneeded, "Meta" },
{ "PIDFile", config_parse_path, &u->service.pid_file, "Service" },
{ "ExecStartPre", config_parse_exec, u->service.exec_command+SERVICE_EXEC_START_PRE, "Service" },
{ "ExecStart", config_parse_exec, u->service.exec_command+SERVICE_EXEC_START, "Service" },
{ "ExecStartPost", config_parse_exec, u->service.exec_command+SERVICE_EXEC_START_POST, "Service" },
{ "ExecReload", config_parse_exec, u->service.exec_command+SERVICE_EXEC_RELOAD, "Service" },
{ "ExecStop", config_parse_exec, u->service.exec_command+SERVICE_EXEC_STOP, "Service" },
{ "ExecStopPost", config_parse_exec, u->service.exec_command+SERVICE_EXEC_STOP_POST, "Service" },
{ "RestartSec", config_parse_usec, &u->service.restart_usec, "Service" },
{ "TimeoutSec", config_parse_usec, &u->service.timeout_usec, "Service" },
{ "Type", config_parse_service_type, &u->service, "Service" },
{ "Restart", config_parse_service_restart, &u->service, "Service" },
EXEC_CONTEXT_CONFIG_ITEMS(u->service.exec_context, "Service"),
{ "ListenStream", config_parse_listen, &u->socket, "Socket" },
{ "ListenDatagram", config_parse_listen, &u->socket, "Socket" },
{ "ListenSequentialPacket", config_parse_listen, &u->socket, "Socket" },
{ "ListenFIFO", config_parse_listen, &u->socket, "Socket" },
{ "BindIPv6Only", config_parse_socket_bind, &u->socket, "Socket" },
{ "Backlog", config_parse_unsigned, &u->socket.backlog, "Socket" },
{ "BindToDevice", config_parse_bindtodevice, &u->socket, "Socket" },
{ "ExecStartPre", config_parse_exec, u->socket.exec_command+SOCKET_EXEC_START_PRE, "Socket" },
{ "ExecStartPost", config_parse_exec, u->socket.exec_command+SOCKET_EXEC_START_POST, "Socket" },
{ "ExecStopPre", config_parse_exec, u->socket.exec_command+SOCKET_EXEC_STOP_PRE, "Socket" },
{ "ExecStopPost", config_parse_exec, u->socket.exec_command+SOCKET_EXEC_STOP_POST, "Socket" },
EXEC_CONTEXT_CONFIG_ITEMS(u->socket.exec_context, "Socket"),
EXEC_CONTEXT_CONFIG_ITEMS(u->automount.exec_context, "Automount"),
{ NULL, NULL, NULL, NULL }
};
#undef EXEC_CONTEXT_CONFIG_ITEMS
const char *sections[3];
char *k;
int r;
Set *symlink_names;
FILE *f;
char *filename, *id;
sections[0] = "Meta";
sections[1] = section_table[u->meta.type];
sections[2] = NULL;
if (!(symlink_names = set_new(string_hash_func, string_compare_func)))
return -ENOMEM;
/* Instead of opening the path right away, we manually
* follow all symlinks and add their name to our unit
* name set while doing so */
if (!(filename = path_make_absolute(path, unit_path()))) {
r = -ENOMEM;
goto finish;
}
if ((r = open_follow(&filename, &f, symlink_names, &id)) < 0) {
if (r == -ENOENT)
r = 0; /* returning 0 means: no suitable config file found */
goto finish;
}
/* Now, parse the file contents */
r = config_parse(filename, f, sections, items, u);
if (r < 0)
goto finish;
/* Let's try to add in all symlink names we found */
while ((k = set_steal_first(symlink_names))) {
if ((r = unit_add_name(u, k)) < 0)
goto finish;
if (id == k)
unit_choose_id(u, id);
free(k);
}
free(u->meta.load_path);
u->meta.load_path = filename;
filename = NULL;
r = 1; /* returning 1 means: suitable config file found and loaded */
finish:
while ((k = set_steal_first(symlink_names)))
free(k);
set_free(symlink_names);
free(filename);
return r;
}
int unit_load_fragment(Unit *u) {
int r = 0;
ExecContext *c;
assert(u);
assert(u->meta.load_state == UNIT_STUB);
if (u->meta.load_path)
r = load_from_path(u, u->meta.load_path);
else {
Iterator i;
char *t;
/* Try to find a name we can load this with */
SET_FOREACH(t, u->meta.names, i)
if ((r = load_from_path(u, t)) != 0)
return r;
}
if (u->meta.type == UNIT_SOCKET)
c = &u->socket.exec_context;
else if (u->meta.type == UNIT_SERVICE)
c = &u->service.exec_context;
else
c = NULL;
if (r >= 0 && c &&
(c->output == EXEC_OUTPUT_KERNEL || c->output == EXEC_OUTPUT_SYSLOG)) {
int k;
/* If syslog or kernel logging is requested, make sure
* our own logging daemon is run first. */
if ((k = unit_add_dependency_by_name(u, UNIT_AFTER, SPECIAL_LOGGER_SOCKET)) < 0)
return k;
if ((k = unit_add_dependency_by_name(u, UNIT_REQUIRES, SPECIAL_LOGGER_SOCKET)) < 0)
return k;
}
return r;
}
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