diff options
Diffstat (limited to 'REORG.TODO/sysdeps/mach/hurd/setgroups.c')
-rw-r--r-- | REORG.TODO/sysdeps/mach/hurd/setgroups.c | 62 |
1 files changed, 62 insertions, 0 deletions
diff --git a/REORG.TODO/sysdeps/mach/hurd/setgroups.c b/REORG.TODO/sysdeps/mach/hurd/setgroups.c new file mode 100644 index 0000000000..7742534b60 --- /dev/null +++ b/REORG.TODO/sysdeps/mach/hurd/setgroups.c @@ -0,0 +1,62 @@ +/* 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 <sys/types.h> +#include <grp.h> +#include <hurd.h> +#include <hurd/id.h> + +/* Set the group set for the current user to GROUPS (N of them). */ +int +setgroups (size_t n, const gid_t *groups) +{ + error_t err; + auth_t newauth; + size_t i; + gid_t new[n]; + + /* Fault before taking locks. */ + for (i = 0; i < n; ++i) + new[i] = groups[i]; + + HURD_CRITICAL_BEGIN; + __mutex_lock (&_hurd_id.lock); + err = _hurd_check_ids (); + if (! err) + { + /* Get a new auth port using those IDs. */ + 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, + new, n, + _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 auth port and reauthenticate everything. */ + err = __setauth (newauth); + __mach_port_deallocate (__mach_task_self (), newauth); + return err; +} +libc_hidden_def (setgroups) |