1#include <sys/shm.h>
2#include <endian.h>
3#include "syscall.h"
4#include "ipc.h"
5
6#if __BYTE_ORDER != __BIG_ENDIAN
7#undef SYSCALL_IPC_BROKEN_MODE
8#endif
9
10int shmctl(int id, int cmd, struct shmid_ds *buf)
11{
12#if IPC_TIME64
13 struct shmid_ds out, *orig;
14 if (cmd&IPC_TIME64) {
15 out = (struct shmid_ds){0};
16 orig = buf;
17 buf = &out;
18 }
19#endif
20#ifdef SYSCALL_IPC_BROKEN_MODE
21 struct shmid_ds tmp;
22 if (cmd == IPC_SET) {
23 tmp = *buf;
24 tmp.shm_perm.mode *= 0x10000U;
25 buf = &tmp;
26 }
27#endif
28#ifndef SYS_ipc
29 int r = __syscall(SYS_shmctl, id, IPC_CMD(cmd), buf);
30#else
31 int r = __syscall(SYS_ipc, IPCOP_shmctl, id, IPC_CMD(cmd), 0, buf, 0);
32#endif
33#ifdef SYSCALL_IPC_BROKEN_MODE
34 if (r >= 0) switch (cmd | IPC_TIME64) {
35 case IPC_STAT:
36 case SHM_STAT:
37 case SHM_STAT_ANY:
38 buf->shm_perm.mode >>= 16;
39 }
40#endif
41#if IPC_TIME64
42 if (r >= 0 && (cmd&IPC_TIME64)) {
43 buf = orig;
44 *buf = out;
45 IPC_HILO(buf, shm_atime);
46 IPC_HILO(buf, shm_dtime);
47 IPC_HILO(buf, shm_ctime);
48 }
49#endif
50 return __syscall_ret(r);
51}