diff options
Diffstat (limited to 'libc/sysdeps/mach/hurd/getgid.c')
-rw-r--r-- | libc/sysdeps/mach/hurd/getgid.c | 54 |
1 files changed, 54 insertions, 0 deletions
diff --git a/libc/sysdeps/mach/hurd/getgid.c b/libc/sysdeps/mach/hurd/getgid.c new file mode 100644 index 000000000..b9e24ae4f --- /dev/null +++ b/libc/sysdeps/mach/hurd/getgid.c @@ -0,0 +1,54 @@ +/* Copyright (C) 1993, 1994, 1995, 1997 Free Software Foundation, Inc. + This file is part of the GNU C Library. + + The GNU C Library is free software; you can redistribute it and/or + modify it under the terms of the GNU Lesser General Public + License as published by the Free Software Foundation; either + version 2.1 of the License, or (at your option) any later version. + + The GNU C Library is distributed in the hope that it will be useful, + but WITHOUT ANY WARRANTY; without even the implied warranty of + MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU + Lesser General Public License for more details. + + You should have received a copy of the GNU Lesser General Public + License along with the GNU C Library; if not, write to the Free + Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA + 02111-1307 USA. */ + +#include <errno.h> +#include <unistd.h> +#include <hurd.h> +#include <hurd/id.h> + +/* Get the real group ID of the calling process. */ +gid_t +__getgid () +{ + error_t err; + gid_t gid; + + HURD_CRITICAL_BEGIN; + __mutex_lock (&_hurd_id.lock); + + if (err = _hurd_check_ids ()) + { + errno = err; + gid = -1; + } + else if (_hurd_id.aux.ngids >= 1) + gid = _hurd_id.aux.gids[0]; + else + { + /* We do not even have a real gid. */ + errno = EGRATUITOUS; + gid = -1; + } + + __mutex_unlock (&_hurd_id.lock); + HURD_CRITICAL_END; + + return gid; +} + +weak_alias (__getgid, getgid) |