2001-10-18 19:33:06 +00:00
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/* vi: set sw=4 ts=4: */
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/*
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* Mini start-stop-daemon implementation(s) for busybox
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*
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* Written by Marek Michalkiewicz <marekm@i17linuxb.ists.pwr.wroc.pl>,
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* Adapted for busybox David Kimdon <dwhedon@gordian.com>
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2006-08-03 15:41:12 +00:00
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*
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2010-08-16 18:14:46 +00:00
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* Licensed under GPLv2 or later, see file LICENSE in this source tree.
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2001-10-18 19:33:06 +00:00
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*/
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2008-05-07 14:52:01 +00:00
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/*
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This is how it is supposed to work:
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start-stop-daemon [OPTIONS] [--start|--stop] [[--] arguments...]
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One (only) of these must be given:
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-S,--start Start
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-K,--stop Stop
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Search for matching processes.
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If --stop is given, stop all matching processes (by sending a signal).
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2008-06-20 18:24:14 +00:00
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If --start is given, start a new process unless a matching process was found.
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2008-05-07 14:52:01 +00:00
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2008-06-20 18:24:14 +00:00
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Options controlling process matching
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(if multiple conditions are specified, all must match):
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2008-05-07 14:52:01 +00:00
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-u,--user USERNAME|UID Only consider this user's processes
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2008-05-18 21:17:52 +00:00
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-n,--name PROCESS_NAME Look for processes by matching PROCESS_NAME
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with comm field in /proc/$PID/stat.
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2008-05-07 14:52:01 +00:00
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Only basename is compared:
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"ntpd" == "./ntpd" == "/path/to/ntpd".
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[TODO: can PROCESS_NAME be a full pathname? Should we require full match then
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with /proc/$PID/exe or argv[0] (comm can't be matched, it never contains path)]
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2008-05-18 21:17:52 +00:00
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-x,--exec EXECUTABLE Look for processes that were started with this
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2012-03-05 15:28:07 +00:00
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command in /proc/$PID/exe and /proc/$PID/cmdline
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(/proc/$PID/cmdline is a bbox extension)
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2008-05-18 21:17:52 +00:00
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Unlike -n, we match against the full path:
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"ntpd" != "./ntpd" != "/path/to/ntpd"
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2008-05-07 14:52:01 +00:00
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-p,--pidfile PID_FILE Look for processes with PID from this file
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Options which are valid for --start only:
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-x,--exec EXECUTABLE Program to run (1st arg of execvp). Mandatory.
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-a,--startas NAME argv[0] (defaults to EXECUTABLE)
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-b,--background Put process into background
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-N,--nicelevel N Add N to process' nice level
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-c,--chuid USER[:[GRP]] Change to specified user [and group]
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-m,--make-pidfile Write PID to the pidfile
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(both -m and -p must be given!)
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2008-05-18 21:17:52 +00:00
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Options which are valid for --stop only:
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2008-05-07 14:52:01 +00:00
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-s,--signal SIG Signal to send (default:TERM)
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2008-05-18 21:17:52 +00:00
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-t,--test Exit with status 0 if process is found
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(we don't actually start or stop daemons)
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Misc options:
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2008-05-07 14:52:01 +00:00
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-o,--oknodo Exit with status 0 if nothing is done
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-q,--quiet Quiet
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-v,--verbose Verbose
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*/
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2015-10-18 22:52:26 +00:00
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//config:config START_STOP_DAEMON
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//config: bool "start-stop-daemon"
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//config: default y
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//config: help
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//config: start-stop-daemon is used to control the creation and
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//config: termination of system-level processes, usually the ones
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//config: started during the startup of the system.
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//config:
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//config:config FEATURE_START_STOP_DAEMON_FANCY
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//config: bool "Support additional arguments"
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//config: default y
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//config: depends on START_STOP_DAEMON
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//config: help
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//config: Support additional arguments.
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//config: -o|--oknodo ignored since we exit with 0 anyway
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//config: -v|--verbose
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//config: -N|--nicelevel N
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//config:
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//config:config FEATURE_START_STOP_DAEMON_LONG_OPTIONS
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//config: bool "Enable long options"
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//config: default y
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//config: depends on START_STOP_DAEMON && LONG_OPTS
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//config: help
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//config: Support long options for the start-stop-daemon applet.
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//applet:IF_START_STOP_DAEMON(APPLET_ODDNAME(start-stop-daemon, start_stop_daemon, BB_DIR_SBIN, BB_SUID_DROP, start_stop_daemon))
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//kbuild:lib-$(CONFIG_START_STOP_DAEMON) += start_stop_daemon.o
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2007-07-31 17:09:44 +00:00
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2011-04-01 20:56:30 +00:00
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//usage:#define start_stop_daemon_trivial_usage
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//usage: "[OPTIONS] [-S|-K] ... [-- ARGS...]"
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//usage:#define start_stop_daemon_full_usage "\n\n"
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//usage: "Search for matching processes, and then\n"
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//usage: "-K: stop all matching processes.\n"
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//usage: "-S: start a process unless a matching process is found.\n"
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//usage: IF_FEATURE_START_STOP_DAEMON_LONG_OPTIONS(
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//usage: "\nProcess matching:"
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//usage: "\n -u,--user USERNAME|UID Match only this user's processes"
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//usage: "\n -n,--name NAME Match processes with NAME"
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//usage: "\n in comm field in /proc/PID/stat"
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//usage: "\n -x,--exec EXECUTABLE Match processes with this command"
|
2012-03-05 15:28:07 +00:00
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//usage: "\n in /proc/PID/{exe,cmdline}"
|
2011-04-01 20:56:30 +00:00
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//usage: "\n -p,--pidfile FILE Match a process with PID from the file"
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//usage: "\n All specified conditions must match"
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//usage: "\n-S only:"
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//usage: "\n -x,--exec EXECUTABLE Program to run"
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//usage: "\n -a,--startas NAME Zeroth argument"
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//usage: "\n -b,--background Background"
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//usage: IF_FEATURE_START_STOP_DAEMON_FANCY(
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//usage: "\n -N,--nicelevel N Change nice level"
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//usage: )
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//usage: "\n -c,--chuid USER[:[GRP]] Change to user/group"
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//usage: "\n -m,--make-pidfile Write PID to the pidfile specified by -p"
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//usage: "\n-K only:"
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//usage: "\n -s,--signal SIG Signal to send"
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//usage: "\n -t,--test Match only, exit with 0 if a process is found"
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//usage: "\nOther:"
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//usage: IF_FEATURE_START_STOP_DAEMON_FANCY(
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//usage: "\n -o,--oknodo Exit with status 0 if nothing is done"
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//usage: "\n -v,--verbose Verbose"
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//usage: )
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//usage: "\n -q,--quiet Quiet"
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//usage: )
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//usage: IF_NOT_FEATURE_START_STOP_DAEMON_LONG_OPTIONS(
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//usage: "\nProcess matching:"
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//usage: "\n -u USERNAME|UID Match only this user's processes"
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//usage: "\n -n NAME Match processes with NAME"
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//usage: "\n in comm field in /proc/PID/stat"
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//usage: "\n -x EXECUTABLE Match processes with this command"
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//usage: "\n command in /proc/PID/cmdline"
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//usage: "\n -p FILE Match a process with PID from the file"
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//usage: "\n All specified conditions must match"
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//usage: "\n-S only:"
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//usage: "\n -x EXECUTABLE Program to run"
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//usage: "\n -a NAME Zeroth argument"
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//usage: "\n -b Background"
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//usage: IF_FEATURE_START_STOP_DAEMON_FANCY(
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//usage: "\n -N N Change nice level"
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//usage: )
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//usage: "\n -c USER[:[GRP]] Change to user/group"
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//usage: "\n -m Write PID to the pidfile specified by -p"
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//usage: "\n-K only:"
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//usage: "\n -s SIG Signal to send"
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//usage: "\n -t Match only, exit with 0 if a process is found"
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//usage: "\nOther:"
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//usage: IF_FEATURE_START_STOP_DAEMON_FANCY(
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//usage: "\n -o Exit with status 0 if nothing is done"
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//usage: "\n -v Verbose"
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//usage: )
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//usage: "\n -q Quiet"
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//usage: )
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2006-10-08 23:36:17 +00:00
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#include <sys/resource.h>
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2001-10-18 19:33:06 +00:00
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2007-08-02 10:14:29 +00:00
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/* Override ENABLE_FEATURE_PIDFILE */
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#define WANT_PIDFILE 1
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2007-05-26 19:00:18 +00:00
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#include "libbb.h"
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2016-04-21 14:26:30 +00:00
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#include "common_bufsiz.h"
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2007-05-26 19:00:18 +00:00
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2004-03-13 08:33:10 +00:00
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struct pid_list {
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2001-10-18 19:33:06 +00:00
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struct pid_list *next;
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2004-03-13 08:33:10 +00:00
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pid_t pid;
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};
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2001-10-18 19:33:06 +00:00
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2008-04-30 13:58:31 +00:00
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enum {
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CTX_STOP = (1 << 0),
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CTX_START = (1 << 1),
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OPT_BACKGROUND = (1 << 2), // -b
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OPT_QUIET = (1 << 3), // -q
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2008-05-18 21:17:52 +00:00
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OPT_TEST = (1 << 4), // -t
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OPT_MAKEPID = (1 << 5), // -m
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OPT_a = (1 << 6), // -a
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OPT_n = (1 << 7), // -n
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OPT_s = (1 << 8), // -s
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OPT_u = (1 << 9), // -u
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OPT_c = (1 << 10), // -c
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OPT_x = (1 << 11), // -x
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OPT_p = (1 << 12), // -p
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OPT_OKNODO = (1 << 13) * ENABLE_FEATURE_START_STOP_DAEMON_FANCY, // -o
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OPT_VERBOSE = (1 << 14) * ENABLE_FEATURE_START_STOP_DAEMON_FANCY, // -v
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OPT_NICELEVEL = (1 << 15) * ENABLE_FEATURE_START_STOP_DAEMON_FANCY, // -N
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2008-04-30 13:58:31 +00:00
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};
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#define QUIET (option_mask32 & OPT_QUIET)
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2008-05-18 21:17:52 +00:00
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#define TEST (option_mask32 & OPT_TEST)
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2008-02-26 16:08:02 +00:00
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struct globals {
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2010-03-26 18:08:53 +00:00
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struct pid_list *found_procs;
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2008-02-26 16:08:02 +00:00
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char *userspec;
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char *cmdname;
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char *execname;
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char *pidfile;
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2010-03-26 18:08:53 +00:00
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char *execname_cmpbuf;
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unsigned execname_sizeof;
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2008-02-26 16:08:02 +00:00
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int user_id;
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smallint signal_nr;
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2010-02-04 14:00:15 +00:00
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} FIX_ALIASING;
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2016-04-21 14:26:30 +00:00
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#define G (*(struct globals*)bb_common_bufsiz1)
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2008-02-26 16:08:02 +00:00
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#define userspec (G.userspec )
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#define cmdname (G.cmdname )
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#define execname (G.execname )
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#define pidfile (G.pidfile )
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#define user_id (G.user_id )
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#define signal_nr (G.signal_nr )
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2008-06-25 09:53:17 +00:00
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#define INIT_G() do { \
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2016-04-21 16:18:48 +00:00
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setup_common_bufsiz(); \
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2008-06-25 09:53:17 +00:00
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user_id = -1; \
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signal_nr = 15; \
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} while (0)
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2008-02-26 16:08:02 +00:00
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2008-05-18 21:17:52 +00:00
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#ifdef OLDER_VERSION_OF_X
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/* -x,--exec EXECUTABLE
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* Look for processes with matching /proc/$PID/exe.
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* Match is performed using device+inode.
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*/
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2008-04-19 19:06:23 +00:00
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static int pid_is_exec(pid_t pid)
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2001-10-18 19:33:06 +00:00
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{
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2008-04-20 14:25:26 +00:00
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struct stat st;
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2010-03-26 18:08:53 +00:00
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char buf[sizeof("/proc/%u/exe") + sizeof(int)*3];
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2004-03-13 08:33:10 +00:00
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2008-05-18 21:17:52 +00:00
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sprintf(buf, "/proc/%u/exe", (unsigned)pid);
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2008-04-19 19:06:23 +00:00
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if (stat(buf, &st) < 0)
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return 0;
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if (st.st_dev == execstat.st_dev
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&& st.st_ino == execstat.st_ino)
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return 1;
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return 0;
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2004-03-13 08:33:10 +00:00
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}
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2008-05-18 21:17:52 +00:00
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#endif
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2001-10-18 19:33:06 +00:00
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2008-05-18 21:17:52 +00:00
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static int pid_is_exec(pid_t pid)
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2001-10-18 19:33:06 +00:00
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{
|
2008-05-18 21:17:52 +00:00
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ssize_t bytes;
|
2010-03-26 18:08:53 +00:00
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char buf[sizeof("/proc/%u/cmdline") + sizeof(int)*3];
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2012-03-05 15:28:07 +00:00
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char *procname, *exelink;
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int match;
|
2008-05-18 21:17:52 +00:00
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2012-03-05 15:28:07 +00:00
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procname = buf + sprintf(buf, "/proc/%u/exe", (unsigned)pid) - 3;
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exelink = xmalloc_readlink(buf);
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match = (exelink && strcmp(execname, exelink) == 0);
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free(exelink);
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if (match)
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return match;
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strcpy(procname, "cmdline");
|
2010-03-26 18:08:53 +00:00
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bytes = open_read_close(buf, G.execname_cmpbuf, G.execname_sizeof);
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2008-05-18 21:17:52 +00:00
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if (bytes > 0) {
|
2010-03-26 18:08:53 +00:00
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G.execname_cmpbuf[bytes] = '\0';
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return strcmp(execname, G.execname_cmpbuf) == 0;
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2008-05-18 21:17:52 +00:00
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}
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return 0;
|
2001-10-18 19:33:06 +00:00
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}
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2008-05-18 21:17:52 +00:00
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static int pid_is_name(pid_t pid)
|
2001-10-18 19:33:06 +00:00
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{
|
2008-05-18 21:17:52 +00:00
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|
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/* /proc/PID/stat is "PID (comm_15_bytes_max) ..." */
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char buf[32]; /* should be enough */
|
2008-04-20 01:27:59 +00:00
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char *p, *pe;
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|
2008-05-18 21:17:52 +00:00
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sprintf(buf, "/proc/%u/stat", (unsigned)pid);
|
2008-04-20 01:27:59 +00:00
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if (open_read_close(buf, buf, sizeof(buf) - 1) < 0)
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return 0;
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buf[sizeof(buf) - 1] = '\0'; /* paranoia */
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p = strchr(buf, '(');
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if (!p)
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return 0;
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pe = strrchr(++p, ')');
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if (!pe)
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return 0;
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*pe = '\0';
|
2008-05-18 21:17:52 +00:00
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|
|
/* we require comm to match and to not be truncated */
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/* in Linux, if comm is 15 chars, it may be a truncated
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* name, so we don't allow that to match */
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if (strlen(p) >= COMM_LEN - 1) /* COMM_LEN is 16 */
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return 0;
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return strcmp(p, cmdname) == 0;
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}
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static int pid_is_user(int pid)
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{
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|
|
struct stat sb;
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char buf[sizeof("/proc/") + sizeof(int)*3];
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|
sprintf(buf, "/proc/%u", (unsigned)pid);
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if (stat(buf, &sb) != 0)
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return 0;
|
|
|
|
return (sb.st_uid == (uid_t)user_id);
|
2001-10-18 19:33:06 +00:00
|
|
|
}
|
|
|
|
|
2006-06-11 17:24:01 +00:00
|
|
|
static void check(int pid)
|
2001-10-18 19:33:06 +00:00
|
|
|
{
|
2007-07-31 17:09:44 +00:00
|
|
|
struct pid_list *p;
|
|
|
|
|
2008-04-19 19:06:23 +00:00
|
|
|
if (execname && !pid_is_exec(pid)) {
|
2001-10-18 19:33:06 +00:00
|
|
|
return;
|
|
|
|
}
|
2008-05-18 21:17:52 +00:00
|
|
|
if (cmdname && !pid_is_name(pid)) {
|
2001-10-18 19:33:06 +00:00
|
|
|
return;
|
|
|
|
}
|
2008-05-18 21:17:52 +00:00
|
|
|
if (userspec && !pid_is_user(pid)) {
|
2001-10-18 19:33:06 +00:00
|
|
|
return;
|
|
|
|
}
|
2007-07-31 17:09:44 +00:00
|
|
|
p = xmalloc(sizeof(*p));
|
2010-03-26 18:08:53 +00:00
|
|
|
p->next = G.found_procs;
|
2007-07-31 17:09:44 +00:00
|
|
|
p->pid = pid;
|
2010-03-26 18:08:53 +00:00
|
|
|
G.found_procs = p;
|
2001-10-18 19:33:06 +00:00
|
|
|
}
|
|
|
|
|
2006-06-11 17:24:01 +00:00
|
|
|
static void do_pidfile(void)
|
2004-03-13 08:33:10 +00:00
|
|
|
{
|
|
|
|
FILE *f;
|
2007-07-31 17:09:44 +00:00
|
|
|
unsigned pid;
|
2004-03-13 08:33:10 +00:00
|
|
|
|
2008-07-21 23:05:26 +00:00
|
|
|
f = fopen_for_read(pidfile);
|
2004-03-13 08:33:10 +00:00
|
|
|
if (f) {
|
2006-12-17 17:30:01 +00:00
|
|
|
if (fscanf(f, "%u", &pid) == 1)
|
2004-03-13 08:33:10 +00:00
|
|
|
check(pid);
|
|
|
|
fclose(f);
|
|
|
|
} else if (errno != ENOENT)
|
2004-04-13 18:28:46 +00:00
|
|
|
bb_perror_msg_and_die("open pidfile %s", pidfile);
|
2004-03-13 08:33:10 +00:00
|
|
|
}
|
2001-10-18 19:33:06 +00:00
|
|
|
|
2006-06-11 17:24:01 +00:00
|
|
|
static void do_procinit(void)
|
2001-10-18 19:33:06 +00:00
|
|
|
{
|
|
|
|
DIR *procdir;
|
|
|
|
struct dirent *entry;
|
2008-02-26 16:08:02 +00:00
|
|
|
int pid;
|
2001-10-18 19:33:06 +00:00
|
|
|
|
2004-04-13 18:28:46 +00:00
|
|
|
if (pidfile) {
|
|
|
|
do_pidfile();
|
|
|
|
return;
|
|
|
|
}
|
|
|
|
|
2006-08-03 15:41:12 +00:00
|
|
|
procdir = xopendir("/proc");
|
2001-10-18 19:33:06 +00:00
|
|
|
|
2008-02-26 16:08:02 +00:00
|
|
|
pid = 0;
|
2008-05-18 21:17:52 +00:00
|
|
|
while (1) {
|
2008-04-22 00:16:29 +00:00
|
|
|
errno = 0; /* clear any previous error */
|
|
|
|
entry = readdir(procdir);
|
2008-05-18 21:17:52 +00:00
|
|
|
// TODO: this check is too generic, it's better
|
|
|
|
// to check for exact errno(s) which mean that we got stale entry
|
2008-04-22 00:16:29 +00:00
|
|
|
if (errno) /* Stale entry, process has died after opendir */
|
|
|
|
continue;
|
|
|
|
if (!entry) /* EOF, no more entries */
|
|
|
|
break;
|
|
|
|
pid = bb_strtou(entry->d_name, NULL, 10);
|
|
|
|
if (errno) /* NaN */
|
|
|
|
continue;
|
|
|
|
check(pid);
|
2001-10-18 19:33:06 +00:00
|
|
|
}
|
|
|
|
closedir(procdir);
|
2008-02-26 16:08:02 +00:00
|
|
|
if (!pid)
|
2007-07-31 17:09:44 +00:00
|
|
|
bb_error_msg_and_die("nothing in /proc - not mounted?");
|
2001-10-18 19:33:06 +00:00
|
|
|
}
|
|
|
|
|
2006-06-11 17:24:01 +00:00
|
|
|
static int do_stop(void)
|
2001-10-18 19:33:06 +00:00
|
|
|
{
|
2006-11-18 22:03:26 +00:00
|
|
|
char *what;
|
2004-03-13 08:33:10 +00:00
|
|
|
struct pid_list *p;
|
2001-10-31 09:55:39 +00:00
|
|
|
int killed = 0;
|
2001-10-18 19:33:06 +00:00
|
|
|
|
2007-07-31 17:09:44 +00:00
|
|
|
if (cmdname) {
|
|
|
|
if (ENABLE_FEATURE_CLEAN_UP) what = xstrdup(cmdname);
|
|
|
|
if (!ENABLE_FEATURE_CLEAN_UP) what = cmdname;
|
|
|
|
} else if (execname) {
|
|
|
|
if (ENABLE_FEATURE_CLEAN_UP) what = xstrdup(execname);
|
|
|
|
if (!ENABLE_FEATURE_CLEAN_UP) what = execname;
|
2008-05-18 21:17:52 +00:00
|
|
|
} else if (pidfile) {
|
2006-11-18 22:03:26 +00:00
|
|
|
what = xasprintf("process in pidfile '%s'", pidfile);
|
2008-05-18 21:17:52 +00:00
|
|
|
} else if (userspec) {
|
2006-11-18 22:03:26 +00:00
|
|
|
what = xasprintf("process(es) owned by '%s'", userspec);
|
2008-05-18 21:17:52 +00:00
|
|
|
} else {
|
2006-11-18 22:03:26 +00:00
|
|
|
bb_error_msg_and_die("internal error, please report");
|
2008-05-18 21:17:52 +00:00
|
|
|
}
|
2001-10-18 19:33:06 +00:00
|
|
|
|
2010-03-26 18:08:53 +00:00
|
|
|
if (!G.found_procs) {
|
2008-04-30 13:58:31 +00:00
|
|
|
if (!QUIET)
|
2006-11-18 22:03:26 +00:00
|
|
|
printf("no %s found; none killed\n", what);
|
2007-07-31 17:09:44 +00:00
|
|
|
killed = -1;
|
|
|
|
goto ret;
|
2001-10-18 19:33:06 +00:00
|
|
|
}
|
2010-03-26 18:08:53 +00:00
|
|
|
for (p = G.found_procs; p; p = p->next) {
|
2011-04-04 00:03:35 +00:00
|
|
|
if (kill(p->pid, TEST ? 0 : signal_nr) == 0) {
|
2001-10-31 09:55:39 +00:00
|
|
|
killed++;
|
|
|
|
} else {
|
2008-05-18 21:17:52 +00:00
|
|
|
bb_perror_msg("warning: killing process %u", (unsigned)p->pid);
|
2011-04-04 00:03:35 +00:00
|
|
|
p->pid = 0;
|
|
|
|
if (TEST) {
|
|
|
|
/* Example: -K --test --pidfile PIDFILE detected
|
|
|
|
* that PIDFILE's pid doesn't exist */
|
|
|
|
killed = -1;
|
|
|
|
goto ret;
|
|
|
|
}
|
2001-10-31 09:55:39 +00:00
|
|
|
}
|
2001-10-18 19:33:06 +00:00
|
|
|
}
|
2008-04-30 13:58:31 +00:00
|
|
|
if (!QUIET && killed) {
|
2001-10-18 19:33:06 +00:00
|
|
|
printf("stopped %s (pid", what);
|
2010-03-26 18:08:53 +00:00
|
|
|
for (p = G.found_procs; p; p = p->next)
|
2008-05-18 21:17:52 +00:00
|
|
|
if (p->pid)
|
|
|
|
printf(" %u", (unsigned)p->pid);
|
2006-11-18 22:03:26 +00:00
|
|
|
puts(")");
|
2001-10-18 19:33:06 +00:00
|
|
|
}
|
2007-07-31 17:09:44 +00:00
|
|
|
ret:
|
2006-06-11 17:24:01 +00:00
|
|
|
if (ENABLE_FEATURE_CLEAN_UP)
|
2006-11-18 22:03:26 +00:00
|
|
|
free(what);
|
2006-06-11 17:24:01 +00:00
|
|
|
return killed;
|
2001-10-18 19:33:06 +00:00
|
|
|
}
|
|
|
|
|
2006-05-26 20:19:22 +00:00
|
|
|
#if ENABLE_FEATURE_START_STOP_DAEMON_LONG_OPTIONS
|
2007-08-12 20:58:27 +00:00
|
|
|
static const char start_stop_daemon_longopts[] ALIGN1 =
|
2007-07-23 17:14:14 +00:00
|
|
|
"stop\0" No_argument "K"
|
|
|
|
"start\0" No_argument "S"
|
|
|
|
"background\0" No_argument "b"
|
|
|
|
"quiet\0" No_argument "q"
|
2008-05-18 21:17:52 +00:00
|
|
|
"test\0" No_argument "t"
|
2007-07-23 17:14:14 +00:00
|
|
|
"make-pidfile\0" No_argument "m"
|
2006-06-11 17:24:01 +00:00
|
|
|
#if ENABLE_FEATURE_START_STOP_DAEMON_FANCY
|
2007-07-23 17:14:14 +00:00
|
|
|
"oknodo\0" No_argument "o"
|
|
|
|
"verbose\0" No_argument "v"
|
|
|
|
"nicelevel\0" Required_argument "N"
|
2006-06-11 17:24:01 +00:00
|
|
|
#endif
|
2007-07-23 17:14:14 +00:00
|
|
|
"startas\0" Required_argument "a"
|
|
|
|
"name\0" Required_argument "n"
|
|
|
|
"signal\0" Required_argument "s"
|
|
|
|
"user\0" Required_argument "u"
|
|
|
|
"chuid\0" Required_argument "c"
|
|
|
|
"exec\0" Required_argument "x"
|
|
|
|
"pidfile\0" Required_argument "p"
|
2006-06-11 17:24:01 +00:00
|
|
|
#if ENABLE_FEATURE_START_STOP_DAEMON_FANCY
|
2007-07-23 17:14:14 +00:00
|
|
|
"retry\0" Required_argument "R"
|
2006-06-11 17:24:01 +00:00
|
|
|
#endif
|
2007-07-24 15:54:42 +00:00
|
|
|
;
|
2006-05-26 20:19:22 +00:00
|
|
|
#endif
|
2003-07-26 09:10:35 +00:00
|
|
|
|
2007-10-11 10:05:36 +00:00
|
|
|
int start_stop_daemon_main(int argc, char **argv) MAIN_EXTERNALLY_VISIBLE;
|
2008-07-05 09:18:54 +00:00
|
|
|
int start_stop_daemon_main(int argc UNUSED_PARAM, char **argv)
|
2001-10-18 19:33:06 +00:00
|
|
|
{
|
2006-10-03 21:00:06 +00:00
|
|
|
unsigned opt;
|
2007-02-26 22:47:42 +00:00
|
|
|
char *signame;
|
|
|
|
char *startas;
|
|
|
|
char *chuid;
|
2008-07-01 10:00:46 +00:00
|
|
|
#ifdef OLDER_VERSION_OF_X
|
2008-05-18 21:17:52 +00:00
|
|
|
struct stat execstat;
|
2008-07-01 10:00:46 +00:00
|
|
|
#endif
|
2006-06-11 17:24:01 +00:00
|
|
|
#if ENABLE_FEATURE_START_STOP_DAEMON_FANCY
|
|
|
|
// char *retry_arg = NULL;
|
|
|
|
// int retries = -1;
|
2006-10-08 23:36:17 +00:00
|
|
|
char *opt_N;
|
2006-06-11 17:24:01 +00:00
|
|
|
#endif
|
2008-02-26 16:08:02 +00:00
|
|
|
|
|
|
|
INIT_G();
|
|
|
|
|
2006-05-26 20:19:22 +00:00
|
|
|
#if ENABLE_FEATURE_START_STOP_DAEMON_LONG_OPTIONS
|
2007-07-23 17:14:14 +00:00
|
|
|
applet_long_options = start_stop_daemon_longopts;
|
2006-05-26 20:19:22 +00:00
|
|
|
#endif
|
2003-07-26 09:10:35 +00:00
|
|
|
|
2008-04-30 13:58:31 +00:00
|
|
|
/* -K or -S is required; they are mutually exclusive */
|
|
|
|
/* -p is required if -m is given */
|
|
|
|
/* -xpun (at least one) is required if -K is given */
|
|
|
|
/* -xa (at least one) is required if -S is given */
|
|
|
|
/* -q turns off -v */
|
|
|
|
opt_complementary = "K:S:K--S:S--K:m?p:K?xpun:S?xa"
|
2009-04-21 11:09:40 +00:00
|
|
|
IF_FEATURE_START_STOP_DAEMON_FANCY("q-v");
|
2008-05-18 21:17:52 +00:00
|
|
|
opt = getopt32(argv, "KSbqtma:n:s:u:c:x:p:"
|
2009-04-21 11:09:40 +00:00
|
|
|
IF_FEATURE_START_STOP_DAEMON_FANCY("ovN:R:"),
|
2007-02-26 22:47:42 +00:00
|
|
|
&startas, &cmdname, &signame, &userspec, &chuid, &execname, &pidfile
|
2009-04-21 11:09:40 +00:00
|
|
|
IF_FEATURE_START_STOP_DAEMON_FANCY(,&opt_N)
|
2008-09-27 01:05:13 +00:00
|
|
|
/* We accept and ignore -R <param> / --retry <param> */
|
2009-04-21 11:09:40 +00:00
|
|
|
IF_FEATURE_START_STOP_DAEMON_FANCY(,NULL)
|
2007-02-26 22:47:42 +00:00
|
|
|
);
|
2006-01-25 00:08:53 +00:00
|
|
|
|
2007-02-26 22:47:42 +00:00
|
|
|
if (opt & OPT_s) {
|
2006-08-28 20:30:27 +00:00
|
|
|
signal_nr = get_signum(signame);
|
|
|
|
if (signal_nr < 0) bb_show_usage();
|
2003-07-30 08:29:56 +00:00
|
|
|
}
|
2003-07-26 09:10:35 +00:00
|
|
|
|
2007-02-26 22:47:42 +00:00
|
|
|
if (!(opt & OPT_a))
|
2003-07-26 09:10:35 +00:00
|
|
|
startas = execname;
|
2008-07-01 10:00:46 +00:00
|
|
|
if (!execname) /* in case -a is given and -x is not */
|
|
|
|
execname = startas;
|
2010-03-26 18:08:53 +00:00
|
|
|
if (execname) {
|
|
|
|
G.execname_sizeof = strlen(execname) + 1;
|
|
|
|
G.execname_cmpbuf = xmalloc(G.execname_sizeof + 1);
|
|
|
|
}
|
2003-07-26 09:10:35 +00:00
|
|
|
|
2009-04-21 11:09:40 +00:00
|
|
|
// IF_FEATURE_START_STOP_DAEMON_FANCY(
|
2006-06-11 17:24:01 +00:00
|
|
|
// if (retry_arg)
|
2010-08-12 12:14:45 +00:00
|
|
|
// retries = xatoi_positive(retry_arg);
|
2006-06-11 17:24:01 +00:00
|
|
|
// )
|
2008-04-19 17:40:29 +00:00
|
|
|
//argc -= optind;
|
2001-10-18 19:33:06 +00:00
|
|
|
argv += optind;
|
|
|
|
|
2006-12-17 17:30:01 +00:00
|
|
|
if (userspec) {
|
|
|
|
user_id = bb_strtou(userspec, NULL, 10);
|
|
|
|
if (errno)
|
2006-12-28 05:44:47 +00:00
|
|
|
user_id = xuname2uid(userspec);
|
2006-12-17 17:30:01 +00:00
|
|
|
}
|
2008-07-01 10:00:46 +00:00
|
|
|
/* Both start and stop need to know current processes */
|
|
|
|
do_procinit();
|
2008-04-19 21:30:52 +00:00
|
|
|
|
2006-12-17 19:43:10 +00:00
|
|
|
if (opt & CTX_STOP) {
|
2006-06-11 17:24:01 +00:00
|
|
|
int i = do_stop();
|
2007-07-31 17:09:44 +00:00
|
|
|
return (opt & OPT_OKNODO) ? 0 : (i <= 0);
|
2001-10-18 19:33:06 +00:00
|
|
|
}
|
|
|
|
|
2010-03-26 18:08:53 +00:00
|
|
|
if (G.found_procs) {
|
2008-04-30 13:58:31 +00:00
|
|
|
if (!QUIET)
|
2010-03-26 18:08:53 +00:00
|
|
|
printf("%s is already running\n%u\n", execname, (unsigned)G.found_procs->pid);
|
2006-12-17 19:43:10 +00:00
|
|
|
return !(opt & OPT_OKNODO);
|
2001-10-18 19:33:06 +00:00
|
|
|
}
|
2008-05-18 21:17:52 +00:00
|
|
|
|
2008-07-01 10:00:46 +00:00
|
|
|
#ifdef OLDER_VERSION_OF_X
|
2008-05-18 21:17:52 +00:00
|
|
|
if (execname)
|
|
|
|
xstat(execname, &execstat);
|
2008-07-01 10:00:46 +00:00
|
|
|
#endif
|
2008-05-18 21:17:52 +00:00
|
|
|
|
2001-10-18 19:33:06 +00:00
|
|
|
*--argv = startas;
|
2006-12-17 19:43:10 +00:00
|
|
|
if (opt & OPT_BACKGROUND) {
|
2007-07-31 17:09:44 +00:00
|
|
|
#if BB_MMU
|
2011-11-09 18:44:37 +00:00
|
|
|
bb_daemonize(DAEMON_DEVNULL_STDIO + DAEMON_CLOSE_EXTRA_FDS + DAEMON_DOUBLE_FORK);
|
2008-07-01 10:00:46 +00:00
|
|
|
/* DAEMON_DEVNULL_STDIO is superfluous -
|
|
|
|
* it's always done by bb_daemonize() */
|
2007-07-31 17:09:44 +00:00
|
|
|
#else
|
2010-07-04 13:32:38 +00:00
|
|
|
pid_t pid = xvfork();
|
2007-08-02 10:14:29 +00:00
|
|
|
if (pid != 0) {
|
|
|
|
/* parent */
|
|
|
|
/* why _exit? the child may have changed the stack,
|
|
|
|
* so "return 0" may do bad things */
|
2008-05-19 09:29:47 +00:00
|
|
|
_exit(EXIT_SUCCESS);
|
2007-07-31 17:09:44 +00:00
|
|
|
}
|
2008-07-01 10:00:46 +00:00
|
|
|
/* Child */
|
2007-08-02 10:14:29 +00:00
|
|
|
setsid(); /* detach from controlling tty */
|
2007-07-31 17:09:44 +00:00
|
|
|
/* Redirect stdio to /dev/null, close extra FDs.
|
|
|
|
* We do not actually daemonize because of DAEMON_ONLY_SANITIZE */
|
2008-07-01 10:00:46 +00:00
|
|
|
bb_daemonize_or_rexec(DAEMON_DEVNULL_STDIO
|
2008-07-01 10:05:12 +00:00
|
|
|
+ DAEMON_CLOSE_EXTRA_FDS
|
2007-07-31 17:09:44 +00:00
|
|
|
+ DAEMON_ONLY_SANITIZE,
|
|
|
|
NULL /* argv, unused */ );
|
|
|
|
#endif
|
2004-04-13 18:28:46 +00:00
|
|
|
}
|
2006-12-17 19:43:10 +00:00
|
|
|
if (opt & OPT_MAKEPID) {
|
2008-07-01 10:00:46 +00:00
|
|
|
/* User wants _us_ to make the pidfile */
|
2007-08-02 10:14:29 +00:00
|
|
|
write_pidfile(pidfile);
|
2002-01-26 09:04:45 +00:00
|
|
|
}
|
2007-02-26 22:47:42 +00:00
|
|
|
if (opt & OPT_c) {
|
2015-10-19 02:37:19 +00:00
|
|
|
struct bb_uidgid_t ugid;
|
2007-02-26 22:47:42 +00:00
|
|
|
parse_chown_usergroup_or_die(&ugid, chuid);
|
2015-10-19 02:37:19 +00:00
|
|
|
if (ugid.uid != (uid_t) -1L) {
|
2011-09-15 16:27:05 +00:00
|
|
|
struct passwd *pw = xgetpwuid(ugid.uid);
|
2015-10-19 02:37:19 +00:00
|
|
|
if (ugid.gid != (gid_t) -1L)
|
2011-09-15 16:27:05 +00:00
|
|
|
pw->pw_gid = ugid.gid;
|
|
|
|
/* initgroups, setgid, setuid: */
|
|
|
|
change_identity(pw);
|
2015-10-19 02:37:19 +00:00
|
|
|
} else if (ugid.gid != (gid_t) -1L) {
|
2011-09-15 16:27:05 +00:00
|
|
|
xsetgid(ugid.gid);
|
|
|
|
setgroups(1, &ugid.gid);
|
|
|
|
}
|
2006-07-17 00:35:07 +00:00
|
|
|
}
|
2006-10-08 23:36:17 +00:00
|
|
|
#if ENABLE_FEATURE_START_STOP_DAEMON_FANCY
|
2006-12-17 19:43:10 +00:00
|
|
|
if (opt & OPT_NICELEVEL) {
|
2006-10-08 23:36:17 +00:00
|
|
|
/* Set process priority */
|
|
|
|
int prio = getpriority(PRIO_PROCESS, 0) + xatoi_range(opt_N, INT_MIN/2, INT_MAX/2);
|
|
|
|
if (setpriority(PRIO_PROCESS, 0, prio) < 0) {
|
|
|
|
bb_perror_msg_and_die("setpriority(%d)", prio);
|
|
|
|
}
|
|
|
|
}
|
|
|
|
#endif
|
2008-07-01 10:00:46 +00:00
|
|
|
execvp(startas, argv);
|
2010-06-24 23:46:53 +00:00
|
|
|
bb_perror_msg_and_die("can't execute '%s'", startas);
|
2001-10-18 19:33:06 +00:00
|
|
|
}
|