From 91a034c61a32ebd6601fb8b894127d43b817f5fc Mon Sep 17 00:00:00 2001 From: Eric Andersen Date: Mon, 19 Mar 2001 21:51:29 +0000 Subject: Add in the sysvipc patch from Michael Shmulevich --- libc/misc/sysvipc/shm.c | 82 +++++++++++++++++++++++++++++++++++++++++++++++++ 1 file changed, 82 insertions(+) create mode 100644 libc/misc/sysvipc/shm.c (limited to 'libc/misc/sysvipc/shm.c') diff --git a/libc/misc/sysvipc/shm.c b/libc/misc/sysvipc/shm.c new file mode 100644 index 000000000..5fdfe6ca7 --- /dev/null +++ b/libc/misc/sysvipc/shm.c @@ -0,0 +1,82 @@ +/* Copyright (C) 1995, 1997, 1998 Free Software Foundation, Inc. + This file is part of the GNU C Library. + Contributed by Ulrich Drepper , August 1995. + + The GNU C Library is free software; you can redistribute it and/or + modify it under the terms of the GNU Library General Public License as + published by the Free Software Foundation; either version 2 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 + Library General Public License for more details. + + You should have received a copy of the GNU Library General Public + License along with the GNU C Library; see the file COPYING.LIB. If not, + write to the Free Software Foundation, Inc., 59 Temple Place - Suite 330, + Boston, MA 02111-1307, USA. */ + +#include +#include +#include "ipc.h" + +#ifdef L_shmat +/* 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; +{ + int retval; + unsigned long raddr; + + retval = __ipc(IPCOP_shmat, shmid, shmflg, (int) &raddr, (void *) shmaddr); + return ((unsigned long int) retval > -(unsigned long int) SHMLBA + ? (void *) retval : (void *) raddr); +} +#endif + +#ifdef L_shmctl +/* Provide operations to control over shared memory segments. */ + +int +shmctl (shmid, cmd, buf) + int shmid; + int cmd; + struct shmid_ds *buf; +{ + return __ipc(IPCOP_shmctl, shmid, cmd, 0, buf); +} +#endif + + +#ifdef L_shmdt +/* Detach shared memory segment starting at address specified by SHMADDR + from the caller's data segment. */ + +int +shmdt (shmaddr) + const void *shmaddr; +{ + return __ipc(IPCOP_shmdt, 0, 0, 0, (void *) shmaddr); +} +#endif + +#ifdef L_shmget +/* Return an identifier for an shared memory segment of at least size SIZE + which is associated with KEY. */ + +int +shmget (key, size, shmflg) + key_t key; + size_t size; + int shmflg; +{ + return __ipc(IPCOP_shmget, key, size, shmflg, NULL); +} +#endif -- cgit v1.2.3