1 #include <sys/msg.h>
2 #include <endian.h>
3 #include <unsupported_api.h>
4 #include "syscall.h"
5 #include "ipc.h"
6
7 #if __BYTE_ORDER != __BIG_ENDIAN
8 #undef SYSCALL_IPC_BROKEN_MODE
9 #endif
10
msgctl(int q,int cmd,struct msqid_ds * buf)11 int msgctl(int q, int cmd, struct msqid_ds *buf)
12 {
13 #if IPC_TIME64
14 struct msqid_ds out, *orig;
15 if (cmd&IPC_TIME64) {
16 out = (struct msqid_ds){0};
17 orig = buf;
18 buf = &out;
19 }
20 #endif
21 UNSUPPORTED_API_VOID(LITEOS_A);
22 #ifdef SYSCALL_IPC_BROKEN_MODE
23 struct msqid_ds tmp;
24 if (cmd == IPC_SET) {
25 tmp = *buf;
26 tmp.msg_perm.mode *= 0x10000U;
27 buf = &tmp;
28 }
29 #endif
30 #ifndef SYS_ipc
31 int r = __syscall(SYS_msgctl, q, IPC_CMD(cmd), buf);
32 #else
33 int r = __syscall(SYS_ipc, IPCOP_msgctl, q, IPC_CMD(cmd), 0, buf, 0);
34 #endif
35 #ifdef SYSCALL_IPC_BROKEN_MODE
36 if (r >= 0) switch (cmd | IPC_TIME64) {
37 case IPC_STAT:
38 case MSG_STAT:
39 case MSG_STAT_ANY:
40 buf->msg_perm.mode >>= 16;
41 }
42 #endif
43 #if IPC_TIME64
44 if (r >= 0 && (cmd&IPC_TIME64)) {
45 buf = orig;
46 *buf = out;
47 IPC_HILO(buf, msg_stime);
48 IPC_HILO(buf, msg_rtime);
49 IPC_HILO(buf, msg_ctime);
50 }
51 #endif
52 return __syscall_ret(r);
53 }
54