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service.c
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/* Finit service monitor, task starter and generic API for managing svc_t
*
* Copyright (c) 2008-2010 Claudio Matsuoka <cmatsuoka@gmail.com>
* Copyright (c) 2008-2022 Joachim Wiberg <troglobit@gmail.com>
*
* Permission is hereby granted, free of charge, to any person obtaining a copy
* of this software and associated documentation files (the "Software"), to deal
* in the Software without restriction, including without limitation the rights
* to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
* copies of the Software, and to permit persons to whom the Software is
* furnished to do so, subject to the following conditions:
*
* The above copyright notice and this permission notice shall be included in
* all copies or substantial portions of the Software.
*
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
* AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
* OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
* THE SOFTWARE.
*/
#include "config.h" /* Generated by configure script */
#include <ctype.h> /* isblank() */
#include <sched.h> /* sched_yield() */
#include <string.h>
#include <sys/reboot.h>
#include <sys/prctl.h>
#include <sys/resource.h>
#include <sys/wait.h>
#include <net/if.h>
#ifdef _LIBITE_LITE
# include <libite/lite.h>
#else
# include <lite/lite.h>
#endif
#include <wordexp.h>
#include "cgroup.h"
#include "conf.h"
#include "cond.h"
#include "finit.h"
#include "helpers.h"
#include "pid.h"
#include "private.h"
#include "sig.h"
#include "service.h"
#include "sm.h"
#include "tty.h"
#include "util.h"
#include "utmp-api.h"
#include "schedule.h"
static struct wq work = {
.cb = service_worker,
};
int service_interval = SERVICE_INTERVAL_DEFAULT;
static void svc_set_state(svc_t *svc, svc_state_t new);
/**
* service_timeout_cb - libuev callback wrapper for service timeouts
* @w: Watcher
* @arg: Callback argument, from init
* @events: Error, or ready to read/write (N/A for relative timers)
*
* Run callback registered when calling service_timeout_after().
*/
static void service_timeout_cb(uev_t *w, void *arg, int events)
{
svc_t *svc = arg;
/* Ignore any UEV_ERROR, we're a one-shot cb so just run it. */
if (svc->timer_cb)
svc->timer_cb(svc);
}
/**
* service_timeout_after - Call a function after some time has elapsed
* @svc: Service to use as argument to the callback
* @timeout: Timeout, in milliseconds
* @cb: Callback function
*
* After @timeout milliseconds has elapsed, call @cb() with @svc as the
* argument.
*
* Returns:
* POSIX OK(0) on success, non-zero on error.
*/
int service_timeout_after(svc_t *svc, int timeout, void (*cb)(svc_t *svc))
{
if (svc->timer_cb)
return -EBUSY;
svc->timer_cb = cb;
return uev_timer_init(ctx, &svc->timer, service_timeout_cb, svc, timeout, 0);
}
/**
* service_timeout_cancel - Cancel timeout associated with service
* @svc: Service whose timeout to cancel
*
* If a timeout is associated with @svc, cancel it.
*
* Returns:
* POSIX OK(0) on success, non-zero on error.
*/
int service_timeout_cancel(svc_t *svc)
{
int err;
if (!svc->timer_cb)
return 0;
err = uev_timer_stop(&svc->timer);
svc->timer_cb = NULL;
return err;
}
/*
* Redirect stdin to /dev/null => all reads by process = EOF
* https://www.freedesktop.org/software/systemd/man/systemd.exec.html#Logging%20and%20Standard%20Input/Output
*/
static int stdin_redirect(void)
{
int fd;
fd = open("/dev/null", O_RDONLY | O_APPEND);
if (-1 != fd) {
dup2(fd, STDIN_FILENO);
return close(fd);
}
return -1;
}
/*
* Redirect output to a file, e.g., /dev/null, or /dev/console
*/
static int fredirect(const char *file)
{
int fd;
fd = open(file, O_WRONLY | O_APPEND | O_NOCTTY);
if (-1 != fd) {
dup2(fd, STDOUT_FILENO);
dup2(fd, STDERR_FILENO);
return close(fd);
}
return -1;
}
/*
* Fallback in case we don't even have logger on the system.
* XXX: we should parse 'prio' here to get facility.level
*/
static void fallback_logger(char *ident, char *prio)
{
int facility = LOG_DAEMON;
int level = LOG_NOTICE;
char buf[256];
prctl(PR_SET_NAME, "finitlog", 0, 0, 0);
openlog(ident, LOG_NOWAIT | LOG_PID, facility);
while ((fgets(buf, sizeof(buf), stdin)))
syslog(level, "%s", buf);
closelog();
}
/*
* Redirect output to syslog using the command line logit tool
*/
static int lredirect(svc_t *svc)
{
pid_t pid;
int fd;
/*
* Open PTY to connect to logger. A pty isn't buffered
* like a pipe, and it eats newlines so they aren't logged
*/
fd = posix_openpt(O_RDWR);
if (fd == -1) {
svc->log.enabled = 0;
return -1;
}
if (grantpt(fd) == -1 || unlockpt(fd) == -1) {
close(fd);
svc->log.enabled = 0;
return -1;
}
pid = fork();
if (pid == 0) {
char *prio = "daemon.info";
char buf[MAX_IDENT_LEN];
char *tag;
int fds;
sched_yield();
fds = open(ptsname(fd), O_RDONLY);
close(fd);
if (fds == -1)
_exit(0);
dup2(fds, STDIN_FILENO);
/* Reset signals */
sig_unblock();
/* Default syslog identity name[:id] */
tag = svc_ident(svc, buf, sizeof(buf));
if (!whichp(_PATH_LOGIT)) {
logit(LOG_INFO, _PATH_LOGIT " missing, using syslog for %s instead", svc->name);
fallback_logger(tag, prio);
_exit(0);
}
if (svc->log.file[0] == '/') {
char sz[20], num[3];
snprintf(sz, sizeof(sz), "%d", logfile_size_max);
snprintf(num, sizeof(num), "%d", logfile_count_max);
execlp(_PATH_LOGIT, "logit", "-f", svc->log.file, "-n", sz, "-r", num, NULL);
_exit(1);
}
if (svc->log.ident[0])
tag = svc->log.ident;
if (svc->log.prio[0])
prio = svc->log.prio;
execlp(_PATH_LOGIT, "logit", "-t", tag, "-p", prio, NULL);
_exit(1);
}
dup2(fd, STDOUT_FILENO);
dup2(fd, STDERR_FILENO);
return close(fd);
}
/*
* Handle redirection of process output, if enabled
*/
static int redirect(svc_t *svc)
{
stdin_redirect();
if (svc->log.enabled) {
if (svc->log.null)
return fredirect("/dev/null");
if (svc->log.console)
return fredirect(console());
return lredirect(svc);
} else if (debug)
return fredirect(console());
#ifdef REDIRECT_OUTPUT
else
return fredirect("/dev/null");
#endif
return 0;
}
/*
* Source environment file, if it exists
* Note: must be called from privsepped child
*/
static void source_env(svc_t *svc)
{
char buf[LINE_SIZE];
char *line;
size_t len;
FILE *fp;
char *fn;
fn = svc_getenv(svc);
if (!fn)
return;
/* Warning in service_start() after svc_checkenv() */
fp = fopen(fn, "r");
if (!fp)
return;
line = buf;
len = sizeof(buf);
while (fgets(line, len, fp)) {
char *key = chomp(line);
char *value, *end;
/* skip any leading whitespace */
while (isspace(*key))
key++;
/* skip comments */
if (*key == '#' || *key == ';')
continue;
/* find end of line */
end = key;
while (*end)
end++;
/* strip trailing whitespace */
if (end > key) {
end--;
while (isspace(*end))
*end-- = 0;
}
value = strchr(key, '=');
if (!value)
continue;
*value++ = 0;
/* strip leading whitespace from value */
while (isspace(*value))
value++;
/* unquote value, if quoted */
if (value[0] == '"' || value[0] == '\'') {
char q = value[0];
if (*end == q) {
value = &value[1];
*end = 0;
}
}
/* find end of key */
end = key;
while (*end)
end++;
/* strip trailing whitespace */
if (end > key) {
end--;
while (isspace(*end))
*end-- = 0;
}
setenv(key, value, 1);
}
fclose(fp);
}
static int is_norespawn(void)
{
return fexist("/mnt/norespawn") ||
fexist("/tmp/norespawn");
}
/* used for process group name, derived from originating filename,
* so to group multiple services, place them in the same .conf
*/
static char *group_name(svc_t *svc, char *buf, size_t len)
{
char *ptr;
if (!svc->file[0])
return svc_ident(svc, buf, len);
ptr = strrchr(svc->file, '/');
if (ptr)
ptr++;
else
ptr = svc->file;
strlcpy(buf, ptr, len);
ptr = strstr(buf, ".conf");
if (ptr)
*ptr = 0;
return buf;
}
static void compose_cmdline(svc_t *svc, char *buf, size_t len)
{
size_t i;
strlcpy(buf, svc->cmd, len);
for (i = 1; i < MAX_NUM_SVC_ARGS; i++) {
if (!strlen(svc->args[i]))
break;
strlcat(buf, " ", len);
strlcat(buf, svc->args[i], len);
}
}
static pid_t service_fork(svc_t *svc)
{
pid_t pid;
pid = fork();
if (pid == 0) {
char *home = NULL;
#ifdef ENABLE_STATIC
int uid = 0; /* XXX: Fix better warning that dropprivs is disabled. */
int gid = 0;
#else
int uid = getuser(svc->username, &home);
int gid = getgroup(svc->group);
#endif
sched_yield();
/* Set configured limits */
for (int i = 0; i < RLIMIT_NLIMITS; i++) {
if (setrlimit(i, &svc->rlimit[i]) == -1)
logit(LOG_WARNING, "%s: rlimit: failed setting %s",
svc_ident(svc, NULL, 0), rlim2str(i));
}
/* Set desired user+group */
if (gid >= 0) {
if (setgid(gid))
_pe("%s: failed setgid(%d)", svc_ident(svc, NULL, 0), gid);
}
if (uid >= 0) {
if (setuid(uid))
_pe("%s: failed setuid(%d)", svc_ident(svc, NULL, 0), uid);
/* Set default path for regular users */
if (uid > 0)
setenv("PATH", _PATH_DEFPATH, 1);
if (home) {
setenv("HOME", home, 1);
if (chdir(home)) {
if (chdir("/"))
_pe("%s: failed chdir(%s) and chdir(/)", svc_ident(svc, NULL, 0), home);
}
}
}
/* Source any environment from env:/path/to/file */
source_env(svc);
}
return pid;
}
/**
* service_start - Start service
* @svc: Service to start
*
* Returns:
* 0 if the service was successfully started. Non-zero otherwise.
*/
static int service_start(svc_t *svc)
{
int result = 0, do_progress = 1;
char cmdline[CMD_SIZE] = "";
sigset_t nmask, omask;
char grnam[80];
pid_t pid;
size_t i;
if (!svc)
return 1;
/* Ignore if finit is SIGSTOP'ed */
if (is_norespawn())
return 1;
/* Don't try and start service if it doesn't exist. */
if (!whichp(svc->cmd)) {
logit(LOG_WARNING, "%s: missing %s or not in $PATH", svc_ident(svc, NULL, 0), svc->cmd);
svc_missing(svc);
return 1;
}
/* Unlike systemd we do not allow starting service if env is missing, unless - */
if (!svc_checkenv(svc)) {
logit(LOG_WARNING, "%s: missing %s env file %s", svc_ident(svc, NULL, 0), svc->cmd, svc->env);
svc_missing(svc);
return 1;
}
if (svc_is_tty(svc) && !svc->notty) {
char *dev = tty_canonicalize(svc->dev);
if (!dev || !tty_exists(dev)) {
_d("TTY %s missing or invalid, halting service.", svc->dev);
svc_missing(svc);
return 1;
}
}
compose_cmdline(svc, cmdline, sizeof(cmdline));
if (svc_is_sysv(svc))
logit(LOG_CONSOLE | LOG_NOTICE, "Calling '%s start' ...", cmdline);
if (!svc->desc[0])
do_progress = 0;
if (do_progress) {
if (svc_is_daemon(svc) || svc_is_sysv(svc))
print_desc("Starting ", svc->desc);
else
print_desc("", svc->desc);
}
/* Declare we're waiting for svc to create its pidfile */
svc_starting(svc);
/* Increment total restarts, unless first time or non-service */
if (svc_is_daemon(svc) || svc_is_sysv(svc)) {
if (svc->restart_cnt || svc->restart_tot)
svc->restart_tot++;
}
/* Block SIGCHLD while forking. */
sigemptyset(&nmask);
sigaddset(&nmask, SIGCHLD);
sigprocmask(SIG_BLOCK, &nmask, &omask);
pid = service_fork(svc);
if (pid == 0) {
char *args[MAX_NUM_SVC_ARGS + 1];
int status;
if (!svc_is_sysv(svc)) {
wordexp_t we = { 0 };
int rc;
if ((rc = wordexp(svc->cmd, &we, 0))) {
_e("%s: failed wordexp(%s): %d", svc_ident(svc, NULL, 0), svc->cmd, rc);
nomem:
wordfree(&we);
_exit(1);
}
for (i = 0; i < MAX_NUM_SVC_ARGS; i++) {
char *arg = svc->args[i];
size_t len = strlen(arg);
char str[len + 2];
char ch = *arg;
if (len == 0)
break;
/*
* Escape forbidden characters in wordexp()
* but allowed in Finit run/task stanzas,
*
* XXX: escapes only leading characters ...
*/
if (strchr("|<>&:", ch))
sprintf(str, "\\");
else
str[0] = 0;
strlcat(str, arg, sizeof(str));
if ((rc = wordexp(str, &we, WRDE_APPEND))) {
_e("%s: failed wordexp(%s): %d", svc_ident(svc, NULL, 0), str, rc);
goto nomem;
}
}
if (we.we_wordc > MAX_NUM_SVC_ARGS) {
logit(LOG_ERR, "%s: too many args to %s after expansion.", svc_ident(svc, NULL, 0), svc->cmd);
goto nomem;
}
for (i = 0; i < we.we_wordc; i++) {
if (strlen(we.we_wordv[i]) >= sizeof(svc->args[i])) {
logit(LOG_ERR, "%s: expanded %s arg. '%s' too long", svc_ident(svc, NULL, 0), svc->cmd, we.we_wordv[i]);
rc = WRDE_NOSPACE;
goto nomem;
}
/* overwrite the child's svc with expanded args */
strlcpy(svc->args[i], we.we_wordv[i], sizeof(svc->args[i]));
args[i] = svc->args[i];
}
wordfree(&we);
} else {
size_t j;
i = 0;
args[i++] = svc->cmd;
/* this handles, e.g., bridge-stop br0 start */
for (j = 0; j < MAX_NUM_SVC_ARGS; j++) {
if (!strlen(svc->args[j]))
break;
args[i++] = svc->args[j];
}
args[i++] = "start";
}
args[i] = NULL;
/*
* The setsid() call takes care to detach the process
* from its controlling terminal, preventing daemons
* from leaking to the console, and allowing us to run
* such programs like `lxc-start -F` in the foreground
* to properly monitor them.
*
* If you find yourself here wanting to fix the output
* to the console at boot, for debugging or similar,
* have a look at redirect() and log.console instead.
*/
pid = setsid();
if (pid < 1)
logit(LOG_ERR, "failed setsid(), pid %d: %s", pid, strerror(errno));
if (!svc_is_tty(svc))
redirect(svc);
sig_unblock();
if (svc_is_runtask(svc))
status = exec_runtask(args[0], &args[1]);
else if (svc_is_tty(svc))
status = tty_exec(svc);
else
status = execvp(args[0], &args[1]);
_exit(status);
} else if (debug) {
_d("Starting %s", cmdline);
}
if (svc_is_tty(svc))
cgroup_user("getty", pid);
else
cgroup_service(group_name(svc, grnam, sizeof(grnam)), pid, &svc->cgroup);
if (!svc_is_sysv(svc))
logit(LOG_CONSOLE | LOG_NOTICE, "Starting %s[%d]", svc_ident(svc, NULL, 0), pid);
svc->pid = pid;
svc->start_time = jiffies();
switch (svc->type) {
case SVC_TYPE_RUN:
svc->status = complete(svc->cmd, pid);
if (WIFEXITED(svc->status) && !WEXITSTATUS(svc->status)) {
svc->started = 1;
result = 0;
} else {
svc->started = 0;
result = 1;
}
svc->start_time = svc->pid = 0;
svc->once++;
svc_set_state(svc, SVC_STOPPING_STATE);
break;
case SVC_TYPE_SERVICE:
pid_file_create(svc);
break;
default:
break;
}
sigprocmask(SIG_SETMASK, &omask, NULL);
if (do_progress)
print_result(result);
return result;
}
/**
* service_kill - Forcefully terminate a service
* @param svc Service to kill
*
* Called when a service refuses to terminate gracefully.
*/
static void service_kill(svc_t *svc)
{
service_timeout_cancel(svc);
if (svc->pid <= 1) {
/* Avoid killing ourselves or all processes ... */
_d("%s: Aborting SIGKILL, already terminated.", svc_ident(svc, NULL, 0));
return;
}
_d("%s: Sending SIGKILL to pid:%d", pid_get_name(svc->pid, NULL, 0), svc->pid);
logit(LOG_CONSOLE | LOG_NOTICE, "Stopping %s[%d], sending SIGKILL ...",
svc_ident(svc, NULL, 0), svc->pid);
if (runlevel != 1)
print_desc("Killing ", svc->desc);
kill(-svc->pid, SIGKILL);
/* Let SIGKILLs stand out, show result as [WARN] */
if (runlevel != 1)
print(2, NULL);
}
/*
* Clean up any lingering state from dead/killed services
*/
static void service_cleanup(svc_t *svc)
{
char *fn;
/* PID collected, cancel any pending SIGKILL */
service_timeout_cancel(svc);
fn = pid_file(svc);
if (fn && remove(fn) && errno != ENOENT)
logit(LOG_CRIT, "Failed removing service %s pidfile %s",
svc_ident(svc, NULL, 0), fn);
/* No longer running, update books. */
if (svc_is_tty(svc) && svc->pid > 1)
utmp_set_dead(svc->pid); /* Set DEAD_PROCESS UTMP entry */
svc->oldpid = svc->pid;
svc->starting = svc->start_time = svc->pid = 0;
}
/**
* service_stop - Stop service
* @svc: Service to stop
*
* Returns:
* 0 if the service was successfully stopped. Non-zero otherwise.
*/
static int service_stop(svc_t *svc)
{
char cmdline[CMD_SIZE] = "";
int do_progress = 1;
int rc = 0;
if (!svc)
return 1;
if (svc->state <= SVC_STOPPING_STATE)
return 0;
service_timeout_cancel(svc);
compose_cmdline(svc, cmdline, sizeof(cmdline));
if (!svc_is_sysv(svc)) {
if (svc->pid <= 1)
return 1;
_d("Sending %s to pid:%d name:%s", sig_name(svc->sighalt),
svc->pid, pid_get_name(svc->pid, NULL, 0));
logit(LOG_CONSOLE | LOG_NOTICE, "Stopping %s[%d], sending %s ...",
svc_ident(svc, NULL, 0), svc->pid, sig_name(svc->sighalt));
} else {
logit(LOG_CONSOLE | LOG_NOTICE, "Calling '%s stop' ...", cmdline);
}
/*
* Make sure we are no longer considering the service to be starting (if
* that was the case). service_monitor() might get confused otherwise, and
* leave the service in a lingering, "stopping", state.
*/
svc_started(svc);
/*
* Verify there's still something there before we send the reaper.
*/
if (svc->pid > 1 && !pid_alive(svc->pid)) {
svc->pid = 0;
return 0;
}
if (!svc->desc[0])
do_progress = 0;
if (runlevel != 1 && do_progress)
print_desc("Stopping ", svc->desc);
if (!svc_is_sysv(svc)) {
if (svc->pid > 1) {
/* Kill all children in the same proess group, e.g. logit */
rc = kill(-svc->pid, svc->sighalt);
_d("kill(-%d, %d) => rc %d, errno %d", svc->pid, svc->sighalt, rc, errno);
/* PID lost or forking process never really started */
if (rc == -1 && (errno == ESRCH || errno == ENOENT)) {
service_cleanup(svc);
svc_set_state(svc, SVC_HALTED_STATE);
} else
svc_set_state(svc, SVC_STOPPING_STATE);
} else {
service_cleanup(svc);
svc_set_state(svc, SVC_HALTED_STATE);
}
} else {
char *args[MAX_NUM_SVC_ARGS + 1];
size_t i = 0, j;
pid_t pid;
args[i++] = svc->cmd;
/* this handles, e.g., bridge-stop br0 stop */
for (j = 0; j < MAX_NUM_SVC_ARGS; j++) {
if (!strlen(svc->args[j]))
break;
args[i++] = svc->args[j];
}
args[i++] = "stop";
args[i] = NULL;
pid = fork();
switch (pid) {
case 0:
setsid();
redirect(svc);
exec_runtask(args[0], &args[1]);
_exit(0);
break;
case -1:
_pe("Failed fork() to call sysv script '%s stop'", cmdline);
rc = 1;
break;
default:
svc_set_state(svc, SVC_STOPPING_STATE);
break;
}
}
if (runlevel != 1)
print_result(rc);
return rc;
}
/**
* service_restart - Restart a service by sending %SIGHUP
* @svc: Service to reload
*
* This function does some basic checks of the runtime state of Finit
* and a sanity check of the @svc before sending %SIGHUP.
*
* Returns:
* POSIX OK(0) or non-zero on error.
*/
static int service_restart(svc_t *svc)
{
int do_progress = 1;
pid_t lost = 0;
int rc;
/* Ignore if finit is SIGSTOP'ed */
if (is_norespawn())
return 1;
if (!svc || !svc->sighup)
return 1;
if (svc->pid <= 1) {
_d("%s: bad PID %d for %s, SIGHUP", svc_ident(svc, NULL, 0), svc->pid, svc->cmd);
svc->start_time = svc->pid = 0;
return 1;
}
/* Skip progress if desc disabled or bootstrap task */
if (!svc->desc[0] || svc_in_runlevel(svc, 0))
do_progress = 0;
if (do_progress)
print_desc("Restarting ", svc->desc);
_d("Sending SIGHUP to PID %d", svc->pid);
logit(LOG_CONSOLE | LOG_NOTICE, "Restarting %s[%d], sending SIGHUP ...",
svc_ident(svc, NULL, 0), svc->pid);
rc = kill(svc->pid, SIGHUP);
if (rc == -1 && (errno == ESRCH || errno == ENOENT)) {
/* nobody home, reset internal state machine */
lost = svc->pid;
} else {
/* Declare we're waiting for svc to re-assert/touch its pidfile */
svc_starting(svc);
/* Service does not maintain a PID file on its own */
if (svc_has_pidfile(svc)) {
sched_yield();
touch(pid_file(svc));
}
}
if (do_progress)
print_result(rc);
if (lost)
service_monitor(lost, 0);
return rc;
}
/**
* service_reload_dynamic - Called on SIGHUP, 'init q' or 'initctl reload'
*
* This function is called when Finit has received SIGHUP to reload
* .conf files in /etc/finit.d. It is responsible for starting,
* stopping and reloading (forwarding SIGHUP) to processes affected.
*/
void service_reload_dynamic(void)
{
sm_set_reload(&sm);
sm_step(&sm);
}
/**
* service_runlevel - Change to a new runlevel
* @newlevel: New runlevel to activate
*
* Stops all services not in @newlevel and starts, or lets continue to run,
* those in @newlevel. Also updates @prevlevel and active @runlevel.
*/
void service_runlevel(int newlevel)
{
if (!rescue && runlevel <= 1 && newlevel > 1)
networking(1);
sm_set_runlevel(&sm, newlevel);
sm_step(&sm);
if (!rescue && (runlevel <= 1 || runlevel == 6))
networking(0);
}
/*
* log:/path/to/logfile,priority:facility.level,tag:ident
*/
static void parse_log(svc_t *svc, char *arg)
{
char *tok;
tok = strtok(arg, ":, ");
while (tok) {
if (!strcmp(tok, "log"))
svc->log.enabled = 1;
else if (!strcmp(tok, "null") || !strcmp(tok, "/dev/null"))
svc->log.null = 1;
else if (!strcmp(tok, "console") || !strcmp(tok, "/dev/console"))
svc->log.console = 1;
else if (tok[0] == '/')
strlcpy(svc->log.file, tok, sizeof(svc->log.file));
else if (!strcmp(tok, "priority") || !strcmp(tok, "prio"))
strlcpy(svc->log.prio, strtok(NULL, ","), sizeof(svc->log.prio));
else if (!strcmp(tok, "tag") || !strcmp(tok, "identity") || !strcmp(tok, "ident"))
strlcpy(svc->log.ident, strtok(NULL, ","), sizeof(svc->log.ident));
tok = strtok(NULL, ":=, ");
}
}
static void parse_env(svc_t *svc, char *env)
{
if (!env)
return;
if (strlen(env) >= sizeof(svc->env)) {
_e("%s: env file is too long (>%zu chars)", svc_ident(svc, NULL, 0), sizeof(svc->env));
return;
}
strlcpy(svc->env, env, sizeof(svc->env));
}
static void parse_cgroup(svc_t *svc, char *cgroup)
{
char *ptr = cgroup;
if (!cgroup)
return;
if (cgroup[0] == '.') {
ptr = strchr(cgroup, ':');
if (ptr)
*ptr++ = 0;
strlcpy(svc->cgroup.name, &cgroup[1], sizeof(svc->cgroup.name));
if (!ptr)
return;
}
if (strlen(ptr) >= sizeof(svc->cgroup)) {
_e("%s: cgroup settings too long (>%zu chars)", svc_ident(svc, NULL, 0), sizeof(svc->cgroup));
return;
}
strlcpy(svc->cgroup.cfg, ptr, sizeof(svc->cgroup.cfg));
}
static void parse_sighalt(svc_t *svc, char *arg)
{
int signo;