diff options
Diffstat (limited to 'REORG.TODO/sysdeps/mach/hurd/setegid.c')
| -rw-r--r-- | REORG.TODO/sysdeps/mach/hurd/setegid.c | 67 |
1 files changed, 67 insertions, 0 deletions
diff --git a/REORG.TODO/sysdeps/mach/hurd/setegid.c b/REORG.TODO/sysdeps/mach/hurd/setegid.c new file mode 100644 index 0000000000..ee0dacf0eb --- /dev/null +++ b/REORG.TODO/sysdeps/mach/hurd/setegid.c @@ -0,0 +1,67 @@ +/* Copyright (C) 1993-2017 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, see + <http://www.gnu.org/licenses/>. */ + +#include <errno.h> +#include <unistd.h> +#include <hurd.h> +#include <sys/types.h> +#include <hurd/id.h> +#include <string.h> + +/* Set the effective user ID of the calling process to GID. */ +int +setegid (gid_t gid) +{ + auth_t newauth; + error_t err; + + HURD_CRITICAL_BEGIN; + __mutex_lock (&_hurd_id.lock); + err = _hurd_check_ids (); + + if (!err) + { + /* Make a new auth handle which has EGID as the first element in the + list of effective gids. */ + + if (_hurd_id.gen.ngids > 0) + { + _hurd_id.gen.gids[0] = gid; + _hurd_id.valid = 0; + } + + err = __USEPORT (AUTH, __auth_makeauth + (port, NULL, MACH_MSG_TYPE_COPY_SEND, 0, + _hurd_id.gen.uids, _hurd_id.gen.nuids, + _hurd_id.aux.uids, _hurd_id.aux.nuids, + _hurd_id.gen.ngids ? _hurd_id.gen.gids : &gid, + _hurd_id.gen.ngids ?: 1, + _hurd_id.aux.gids, _hurd_id.aux.ngids, + &newauth)); + } + __mutex_unlock (&_hurd_id.lock); + HURD_CRITICAL_END; + + if (err) + return __hurd_fail (err); + + /* Install the new handle and reauthenticate everything. */ + err = __setauth (newauth); + __mach_port_deallocate (__mach_task_self (), newauth); + return err; +} +libc_hidden_def (setegid) |