45 lines
723 B
C
45 lines
723 B
C
|
#define _SYSTEM 1
|
||
|
|
#define _MINIX 1
|
||
|
|
#include <sys/cdefs.h>
|
||
|
|
#include <lib.h>
|
||
|
|
#include "namespace.h"
|
||
|
|
|
||
|
|
#include <minix/rs.h>
|
||
|
|
#include <sys/types.h>
|
||
|
|
#include <sys/ipc.h>
|
||
|
|
#include <sys/shm.h>
|
||
|
|
#include <stdlib.h>
|
||
|
|
#include <errno.h>
|
||
|
|
|
||
|
|
|
||
|
|
#ifdef __weak_alias
|
||
|
|
__weak_alias(shmget, _shmget)
|
||
|
|
#endif
|
||
|
|
|
||
|
|
static int get_ipc_endpt(endpoint_t *pt)
|
||
|
|
{
|
||
|
|
return minix_rs_lookup("ipc", pt);
|
||
|
|
}
|
||
|
|
|
||
|
|
/* Get shared memory segment. */
|
||
|
|
int shmget(key_t key, size_t size, int shmflg)
|
||
|
|
{
|
||
|
|
message m;
|
||
|
|
endpoint_t ipc_pt;
|
||
|
|
int r;
|
||
|
|
|
||
|
|
if (get_ipc_endpt(&ipc_pt) != OK) {
|
||
|
|
errno = ENOSYS;
|
||
|
|
return -1;
|
||
|
|
}
|
||
|
|
|
||
|
|
m.SHMGET_KEY = key;
|
||
|
|
m.SHMGET_SIZE = size;
|
||
|
|
m.SHMGET_FLAG = shmflg;
|
||
|
|
|
||
|
|
r = _syscall(ipc_pt, IPC_SHMGET, &m);
|
||
|
|
if (r != OK)
|
||
|
|
return r;
|
||
|
|
return m.SHMGET_RETID;
|
||
|
|
}
|