diff options
Diffstat (limited to 'extras/volume_id/vol_id.c')
| -rw-r--r-- | extras/volume_id/vol_id.c | 20 |
1 files changed, 9 insertions, 11 deletions
diff --git a/extras/volume_id/vol_id.c b/extras/volume_id/vol_id.c index e17e7abb0c..38950ee85f 100644 --- a/extras/volume_id/vol_id.c +++ b/extras/volume_id/vol_id.c @@ -154,7 +154,6 @@ int main(int argc, char *argv[]) int skip_raid = 0; int probe_all = 0; const char *node; - struct passwd *pw; int fd; const char *label, *uuid, *type, *type_version, *usage; int retval; @@ -237,16 +236,15 @@ int main(int argc, char *argv[]) dbg("BLKGETSIZE64=%llu", (unsigned long long)size); /* try to drop all privileges before reading disk content */ - pw = getpwnam ("nobody"); - if (pw != NULL && pw->pw_uid > 0 && pw->pw_gid > 0) { - dbg("dropping privileges to %u:%u", - (unsigned int)pw->pw_uid, (unsigned int)pw->pw_gid); - if (setgroups(0, NULL) != 0 || - setgid(pw->pw_gid) != 0 || - setuid(pw->pw_uid) != 0) { - fprintf(stderr, "error dropping privileges: %s\n", strerror(errno)); - rc = 3; - goto exit; + if (getuid() == 0) { + struct passwd *pw; + + pw = getpwnam("nobody"); + if (pw != NULL && pw->pw_uid > 0 && pw->pw_gid > 0) { + if (setgroups(0, NULL) != 0 || + setgid(pw->pw_gid) != 0 || + setuid(pw->pw_uid) != 0) + info("unable to drop privileges: %s\n", strerror(errno)); } } |