projects / thirdparty / glibc.git / blame
| Commit | Line | Data |
|---|---|---|
| 28f540f4 RM |
1 | /* Copyright (C) 1993, 1994, 1995 Free Software Foundation, Inc. |
| 2 | This file is part of the GNU C Library. | |
| 3 | ||
| 4 | The GNU C Library is free software; you can redistribute it and/or | |
| 5 | modify it under the terms of the GNU Library General Public License as | |
| 6 | published by the Free Software Foundation; either version 2 of the | |
| 7 | License, or (at your option) any later version. | |
| 8 | ||
| 9 | The GNU C Library is distributed in the hope that it will be useful, | |
| 10 | but WITHOUT ANY WARRANTY; without even the implied warranty of | |
| 11 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU | |
| 12 | Library General Public License for more details. | |
| 13 | ||
| 14 | You should have received a copy of the GNU Library General Public | |
| 15 | License along with the GNU C Library; see the file COPYING.LIB. If | |
| 16 | not, write to the Free Software Foundation, Inc., 675 Mass Ave, | |
| 17 | Cambridge, MA 02139, USA. */ | |
| 18 | ||
| 19 | #include <ansidecl.h> | |
| 20 | #include <errno.h> | |
| 21 | #include <unistd.h> | |
| 22 | #include <hurd.h> | |
| 23 | #include <hurd/port.h> | |
| 24 | ||
| 25 | ||
| 26 | /* Create a new session with the calling process as its leader. | |
| 27 | The process group IDs of the session and the calling process | |
| 28 | are set to the process ID of the calling process, which is returned. */ | |
| 29 | int | |
| 30 | DEFUN_VOID(__setsid) | |
| 31 | { | |
| 32 | error_t err; | |
| 33 | unsigned int stamp; | |
| 34 | ||
| 35 | stamp = _hurd_pids_changed_stamp; /* Atomic fetch. */ | |
| 36 | ||
| 37 | /* Tell the proc server we want to start a new session. */ | |
| 38 | if (err = __USEPORT (PROC, __proc_setsid (port))) | |
| 39 | return __hurd_fail (err); | |
| 40 | ||
| 41 | /* Punt our current ctty. */ | |
| 42 | _hurd_setcttyid (MACH_PORT_NULL); | |
| 43 | ||
| 44 | /* Synchronize with the signal thread to make sure we have | |
| 45 | received and processed proc_newids before returning to the user. */ | |
| 46 | while (_hurd_pids_changed_stamp == stamp) | |
| 47 | { | |
| 48 | #ifdef noteven | |
| 49 | /* XXX we have no need for a mutex, but cthreads demands one. */ | |
| 50 | __condition_wait (&_hurd_pids_changed_sync, NULL); | |
| 51 | #else | |
| 52 | __swtch_pri(0); | |
| 53 | #endif | |
| 54 | } | |
| 55 | ||
| 56 | return 0; | |
| 57 | } | |
| 58 | ||
| 59 | weak_alias (__setsid, setsid) |