diff options
author | Samuel Thibault <samuel.thibault@ens-lyon.org> | 2012-02-20 04:08:11 +0100 |
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committer | Samuel Thibault <samuel.thibault@ens-lyon.org> | 2012-02-20 04:08:11 +0100 |
commit | 4583896ebb051a796430098aab431a47e4920358 (patch) | |
tree | 93f231db8d5e978b61b60bd3198bb024e6a4348b /sysdeps/mach/hurd/shmdt.c | |
parent | 0234227d25807a330c27d549b9c17956a2f3fe35 (diff) |
Implement SysV shared memory for GNU/Hurd.
2005-07-11 Marcus Brinkmann <marcus@gnu.org>
* hurd/Makefile (routines): Add sysvshm.
(distribute): Add sysvshm.h.
* hurd/sysvshm.h: New file.
* hurd/sysvshm.c: New file.
* sysdeps/mach/hurd/bits/stat.h (S_IMMAP0): New macro.
(S_ISPARE): Unset the S_IMMAP0 flag.
* sysdeps/mach/hurd/ftok.c: New file.
* sysdeps/mach/hurd/shmat.c: New file.
* sysdeps/mach/hurd/shmctl.c: New file.
* sysdeps/mach/hurd/shmdt.c: New file.
* sysdeps/mach/hurd/bits/posix_opt.h: Define _XOPEN_SHM to 1.
Diffstat (limited to 'sysdeps/mach/hurd/shmdt.c')
-rw-r--r-- | sysdeps/mach/hurd/shmdt.c | 51 |
1 files changed, 51 insertions, 0 deletions
diff --git a/sysdeps/mach/hurd/shmdt.c b/sysdeps/mach/hurd/shmdt.c new file mode 100644 index 0000000000..cdafef0200 --- /dev/null +++ b/sysdeps/mach/hurd/shmdt.c @@ -0,0 +1,51 @@ +/* Copyright (C) 2005 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 <stdio.h> +#include <errno.h> +#include <fcntl.h> +#include <unistd.h> +#include <assert.h> +#include <sys/mman.h> +#include <sys/ipc.h> +#include <sys/shm.h> +#include <sys/time.h> +#include <sys/stat.h> + +#include "sysvshm.h" + +/* Detach shared memory segment starting at address specified by + SHMADDR from the caller's data segment. */ +int +__shmdt (const void *shmaddr) +{ + error_t err; + size_t size; + + err = __sysvshm_remove ((void *) shmaddr, &size); + if (err) + { + errno = err; + return -1; + } + + __munmap ((void *) shmaddr, size); + return 0; +} + +weak_alias(__shmdt, shmdt) |