diff options
Diffstat (limited to 'miscutils/setsid.c')
| -rw-r--r-- | miscutils/setsid.c | 10 |
1 files changed, 6 insertions, 4 deletions
diff --git a/miscutils/setsid.c b/miscutils/setsid.c index 110bb6bb6..014de51e5 100644 --- a/miscutils/setsid.c +++ b/miscutils/setsid.c @@ -4,7 +4,7 @@ * Rick Sladkey <jrs@world.std.com> * In the public domain. * - * 1999-02-22 Arkadiusz Mi¶kiewicz <misiek@pld.ORG.PL> + * 1999-02-22 Arkadiusz Mickiewicz <misiek@pld.ORG.PL> * - added Native Language Support * * 2001-01-18 John Fremlin <vii@penguinpowered.com> @@ -17,12 +17,14 @@ #include "libbb.h" int setsid_main(int argc, char **argv) MAIN_EXTERNALLY_VISIBLE; -int setsid_main(int argc, char **argv) +int setsid_main(int argc ATTRIBUTE_UNUSED, char **argv) { - if (argc < 2) + if (!argv[1]) bb_show_usage(); - /* Comment why is this necessary? */ + /* setsid() is allowed only when we are not a process group leader. + * Otherwise our PID serves as PGID of some existing process group + * and cannot be used as PGID of a new process group. */ if (getpgrp() == getpid()) forkexit_or_rexec(argv); |