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} 52