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| author | Aitor Esteve Alvarado | 2019-03-07 10:14:48 +0100 |
|---|---|---|
| committer | Denys Vlasenko | 2019-06-09 13:47:49 +0200 |
| commit | 7b6d4f50c97b4f375687e8216313b10598b44b49 (patch) | |
| tree | f456b0c66da297ed134d9cbbdf9dda148ca0fdfd | |
| parent | 894f0a32351fe6c28fe86958e5f4e21422394183 (diff) | |
| download | busybox-7b6d4f50c97b4f375687e8216313b10598b44b49.zip busybox-7b6d4f50c97b4f375687e8216313b10598b44b49.tar.gz | |
start-stop-daemon: change priority before dropping privileges
Currently start-stop-daemon fails when using both the -c option (set uid)
and -N option (set niceness/priority) as it first drops privileges and then
tries to increase the priority. This patch changes the order of execution.
Signed-off-by: Aitor Esteve Alvarado <aesteve@singularaircraft.com>
Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
| -rw-r--r-- | debianutils/start_stop_daemon.c | 18 |
1 files changed, 9 insertions, 9 deletions
diff --git a/debianutils/start_stop_daemon.c b/debianutils/start_stop_daemon.c index 72642ae..6fbf8b6 100644 --- a/debianutils/start_stop_daemon.c +++ b/debianutils/start_stop_daemon.c @@ -537,6 +537,15 @@ int start_stop_daemon_main(int argc UNUSED_PARAM, char **argv) /* User wants _us_ to make the pidfile */ write_pidfile(pidfile); } +#if ENABLE_FEATURE_START_STOP_DAEMON_FANCY + if (opt & OPT_NICELEVEL) { + /* Set process priority (must be before OPT_c) */ + 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 if (opt & OPT_c) { struct bb_uidgid_t ugid; parse_chown_usergroup_or_die(&ugid, chuid); @@ -551,15 +560,6 @@ int start_stop_daemon_main(int argc UNUSED_PARAM, char **argv) setgroups(1, &ugid.gid); } } -#if ENABLE_FEATURE_START_STOP_DAEMON_FANCY - if (opt & OPT_NICELEVEL) { - /* 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 /* Try: * strace -oLOG start-stop-daemon -S -x /bin/usleep -a qwerty 500000 * should exec "/bin/usleep", but argv[0] should be "qwerty": |