diff options
Diffstat (limited to 'REORG.TODO/sysdeps/mach/hurd/setpgid.c')
-rw-r--r-- | REORG.TODO/sysdeps/mach/hurd/setpgid.c | 54 |
1 files changed, 54 insertions, 0 deletions
diff --git a/REORG.TODO/sysdeps/mach/hurd/setpgid.c b/REORG.TODO/sysdeps/mach/hurd/setpgid.c new file mode 100644 index 0000000000..1de4c574d5 --- /dev/null +++ b/REORG.TODO/sysdeps/mach/hurd/setpgid.c @@ -0,0 +1,54 @@ +/* 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 <hurd/port.h> + +/* Set the process group ID of the process matching PID to PGID. + If PID is zero, the current process's process group ID is set. + If PGID is zero, the process ID of the process is used. */ +int +__setpgid (pid_t pid, pid_t pgid) +{ + error_t err; + unsigned int stamp; + + stamp = _hurd_pids_changed_stamp; /* Atomic fetch. */ + + if (err = __USEPORT (PROC, __proc_setpgrp (port, pid, pgid))) + return __hurd_fail (err); + + if (pid == 0 || pid == _hurd_pid) + /* Synchronize with the signal thread to make sure we have + received and processed proc_newids before returning to the user. */ + while (_hurd_pids_changed_stamp == stamp) + { +#ifdef noteven + /* XXX we have no need for a mutex, but cthreads demands one. */ + __condition_wait (&_hurd_pids_changed_sync, NULL); +#else + __swtch_pri(0); +#endif + } + + return 0; + +} +libc_hidden_def (__setpgid) +weak_alias (__setpgid, setpgid) |