mirror of
git://sourceware.org/git/glibc.git
synced 2024-12-27 04:41:02 +08:00
41bdb6e20c
2001-07-06 Paul Eggert <eggert@twinsun.com> * manual/argp.texi: Remove ignored LGPL copyright notice; it's not appropriate for documentation anyway. * manual/libc-texinfo.sh: "Library General Public License" -> "Lesser General Public License". 2001-07-06 Andreas Jaeger <aj@suse.de> * All files under GPL/LGPL version 2: Place under LGPL version 2.1.
58 lines
1.9 KiB
C
58 lines
1.9 KiB
C
/* Copyright (C) 1995, 1997, 1998, 1999, 2000 Free Software Foundation, Inc.
|
|
This file is part of the GNU C Library.
|
|
Contributed by Ulrich Drepper <drepper@gnu.ai.mit.edu>, August 1995.
|
|
|
|
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 <errno.h>
|
|
#include <sys/shm.h>
|
|
#include <ipc_priv.h>
|
|
|
|
#include <sysdep.h>
|
|
#include <sys/syscall.h>
|
|
#include <bp-checks.h>
|
|
|
|
/* Attach the shared memory segment associated with SHMID to the data
|
|
segment of the calling process. SHMADDR and SHMFLG determine how
|
|
and where the segment is attached. */
|
|
|
|
void *
|
|
shmat (shmid, shmaddr, shmflg)
|
|
int shmid;
|
|
const void *shmaddr;
|
|
int shmflg;
|
|
{
|
|
void *__unbounded result;
|
|
void *__unbounded raddr;
|
|
|
|
#if __BOUNDED_POINTERS__
|
|
size_t length = ~0;
|
|
struct shmid_ds shmds;
|
|
/* It's unfortunate that we need to make another system call to get
|
|
the shared memory segment length... */
|
|
if (shmctl (shmid, IPC_STAT, &shmds) == 0)
|
|
length = shmds.shm_segsz;
|
|
#endif
|
|
|
|
result = (void *__unbounded) INLINE_SYSCALL (ipc, 5, IPCOP_shmat, shmid, shmflg,
|
|
(long int) __ptrvalue (&raddr),
|
|
__ptrvalue (shmaddr));
|
|
if ((unsigned long) result <= -(unsigned long) SHMLBA)
|
|
result = raddr;
|
|
|
|
return BOUNDED_N (result, length);
|
|
}
|