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/*
* CDDL HEADER START
*
* The contents of this file are subject to the terms of the
* Common Development and Distribution License (the "License").
* You may not use this file except in compliance with the License.
*
* You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE
* or http://www.opensolaris.org/os/licensing.
* See the License for the specific language governing permissions
* and limitations under the License.
*
* When distributing Covered Code, include this CDDL HEADER in each
* file and include the License file at usr/src/OPENSOLARIS.LICENSE.
* If applicable, add the following below this CDDL HEADER, with the
* fields enclosed by brackets "[]" replaced with your own identifying
* information: Portions Copyright [yyyy] [name of copyright owner]
*
* CDDL HEADER END
*/
/*
* Copyright 2006 Sun Microsystems, Inc. All rights reserved.
* Use is subject to license terms.
*/
/* Copyright (c) 1984 AT&T */
/* All Rights Reserved */
#pragma ident "%Z%%M% %I% %E% SMI"
#include <sys/syscall.h>
#include <stdarg.h>
#include <sys/types.h>
#include <sys/ipc.h>
#include <sys/shm.h>
#include <errno.h>
/* shmsys dispatch argument */
#define SHMAT 0
#define SHMCTL 1
#define SHMDT 2
#define SHMGET 3
struct shmid_sv {
struct ipc_perm shm_perm;
int shm_segsz;
struct anon_map *shm_amp;
unsigned short shm_lkcnt;
char pad[2];
short shm_lpid;
short shm_cpid;
unsigned short shm_nattch;
unsigned short shm_cnattch;
time_t shm_atime;
time_t shm_dtime;
time_t shm_ctime;
};
char *
shmat(int shmid, char *shmaddr, int shmflg)
{
return ((char *)_syscall(SYS_shmsys, SHMAT, shmid, shmaddr, shmflg));
}
int
shmctl(int shmid, int cmd, struct shmid_ds *buf)
{
struct shmid_sv n_buf;
int ret;
if (buf == (struct shmid_ds *)-1) {
errno = EFAULT;
return (-1);
}
if (buf == 0) {
ret = _syscall(SYS_shmsys, SHMCTL, shmid, cmd, 0);
} else {
n_buf.shm_perm = buf->shm_perm;
n_buf.shm_segsz = buf->shm_segsz;
n_buf.shm_amp = buf->shm_amp;
n_buf.shm_lpid = buf->shm_lpid;
n_buf.shm_cpid = buf->shm_cpid;
n_buf.shm_nattch = buf->shm_nattch;
n_buf.shm_atime = buf->shm_atime;
n_buf.shm_dtime = buf->shm_dtime;
n_buf.shm_ctime = buf->shm_ctime;
n_buf.shm_lkcnt = 0;
n_buf.shm_cnattch = 0;
ret = _syscall(SYS_shmsys, SHMCTL, shmid, cmd, &n_buf);
buf->shm_perm = n_buf.shm_perm;
buf->shm_segsz = n_buf.shm_segsz;
buf->shm_amp = n_buf.shm_amp;
buf->shm_lpid = n_buf.shm_lpid;
buf->shm_cpid = n_buf.shm_cpid;
buf->shm_nattch = n_buf.shm_nattch;
buf->shm_atime = n_buf.shm_atime;
buf->shm_dtime = n_buf.shm_dtime;
buf->shm_ctime = n_buf.shm_ctime;
}
return (ret);
}
int
shmdt(char *shmaddr)
{
return (_syscall(SYS_shmsys, SHMDT, shmaddr));
}
int
shmget(key_t key, int size, int shmflg)
{
return (_syscall(SYS_shmsys, SHMGET, key, size, shmflg));
}
int
shmsys(int sysnum, ...)
{
va_list ap;
int shmid, shmflg, cmd, size;
char *shmaddr;
struct shmid_ds *buf;
key_t key;
va_start(ap, sysnum);
switch (sysnum) {
case SHMAT:
shmid = va_arg(ap, int);
shmaddr = va_arg(ap, char *);
shmflg = va_arg(ap, int);
va_end(ap);
return ((int)shmat(shmid, shmaddr, shmflg));
case SHMCTL:
shmid = va_arg(ap, int);
cmd = va_arg(ap, int);
buf = va_arg(ap, struct shmid_ds *);
va_end(ap);
return (shmctl(shmid, cmd, buf));
case SHMDT:
shmaddr = va_arg(ap, char *);
va_end(ap);
return (shmdt(shmaddr));
case SHMGET:
key = va_arg(ap, key_t);
size = va_arg(ap, int);
shmflg = va_arg(ap, int);
va_end(ap);
return (shmget(key, size, shmflg));
}
va_end(ap);
return (-1);
}
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