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| author | Pino Toscano <toscano.pino@tiscali.it> | 2012-07-21 00:06:33 +0200 |
|---|---|---|
| committer | Pino Toscano <toscano.pino@tiscali.it> | 2012-07-21 00:06:33 +0200 |
| commit | 0ced335ac081474e12c89709c81cf2f2094c5351 (patch) | |
| tree | cb1426667fd71bcbf91ed98ed5a2a6e91dce1236 /sysdeps/mach/hurd/getgroups.c | |
| parent | 898c7aaba55cb348d4a94286cbaf7e2920f0cd82 (diff) | |
| download | glibc-0ced335ac081474e12c89709c81cf2f2094c5351.tar.gz glibc-0ced335ac081474e12c89709c81cf2f2094c5351.tar.xz glibc-0ced335ac081474e12c89709c81cf2f2094c5351.zip | |
Hurd: compliance fixes for getgroups
Fail with EINVAL when the requested number of groups is negative, or when it is positive but less than the actual number of groups.
Diffstat (limited to 'sysdeps/mach/hurd/getgroups.c')
| -rw-r--r-- | sysdeps/mach/hurd/getgroups.c | 5 |
1 files changed, 4 insertions, 1 deletions
diff --git a/sysdeps/mach/hurd/getgroups.c b/sysdeps/mach/hurd/getgroups.c index 157a981740..35b219ef66 100644 --- a/sysdeps/mach/hurd/getgroups.c +++ b/sysdeps/mach/hurd/getgroups.c @@ -30,6 +30,9 @@ __getgroups (n, gidset) int ngids; void *crit; + if (n < 0) + return __hurd_fail (EINVAL); + crit = _hurd_critical_section_lock (); __mutex_lock (&_hurd_id.lock); @@ -53,7 +56,7 @@ __getgroups (n, gidset) /* Now that the lock is released, we can safely copy the group set into the user's array, which might fault. */ if (ngids > n) - ngids = n; + return __hurd_fail (EINVAL); memcpy (gidset, gids, ngids * sizeof (gid_t)); } else |