3f38115c7b
. define _MINIX_SYSTEM for all system code from minix.service.mk . hide some system-level declarations and definitions behind _MINIX_SYSTEM to cleanly fix host tool build problems on Minix (such as: NONE being defined and paddr_t being used but not declared) . the similar definition _SYSTEM is unsuitable as it changes the values of errno definitions Change-Id: I407de79e2575115243a074b16e79546a279cfa3e
63 lines
1 KiB
C
63 lines
1 KiB
C
#define _SYSTEM 1
|
|
#define _MINIX_SYSTEM 1
|
|
|
|
#include <sys/cdefs.h>
|
|
#include <lib.h>
|
|
#include "namespace.h"
|
|
|
|
#include <minix/rs.h>
|
|
|
|
#include <lib.h>
|
|
#include <sys/types.h>
|
|
#include <sys/ipc.h>
|
|
#include <sys/shm.h>
|
|
#include <stdlib.h>
|
|
#include <errno.h>
|
|
#include <string.h>
|
|
|
|
static int get_ipc_endpt(endpoint_t *pt)
|
|
{
|
|
return minix_rs_lookup("ipc", pt);
|
|
}
|
|
|
|
/* Attach shared memory segment. */
|
|
void *shmat(int shmid, const void *shmaddr, int shmflg)
|
|
{
|
|
message m;
|
|
endpoint_t ipc_pt;
|
|
int r;
|
|
|
|
if (get_ipc_endpt(&ipc_pt) != OK) {
|
|
errno = ENOSYS;
|
|
return NULL;
|
|
}
|
|
|
|
memset(&m, 0, sizeof(m));
|
|
m.SHMAT_ID = shmid;
|
|
m.SHMAT_ADDR = (long) shmaddr;
|
|
m.SHMAT_FLAG = shmflg;
|
|
|
|
r = _syscall(ipc_pt, IPC_SHMAT, &m);
|
|
if (r != OK)
|
|
return (void *) -1;
|
|
return (void *) m.SHMAT_RETADDR;
|
|
}
|
|
|
|
/* Deattach shared memory segment. */
|
|
int shmdt(const void *shmaddr)
|
|
{
|
|
message m;
|
|
endpoint_t ipc_pt;
|
|
|
|
if (get_ipc_endpt(&ipc_pt) != OK) {
|
|
errno = ENOSYS;
|
|
return -1;
|
|
}
|
|
|
|
memset(&m, 0, sizeof(m));
|
|
m.SHMDT_ADDR = (long) shmaddr;
|
|
|
|
return _syscall(ipc_pt, IPC_SHMDT, &m);
|
|
}
|
|
|