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| | #include <sys/shm.h>
#include <endian.h>
#include "syscall.h"
#include "ipc.h"
#if __BYTE_ORDER != __BIG_ENDIAN
#undef SYSCALL_IPC_BROKEN_MODE
#endif
int shmctl(int id, int cmd, struct shmid_ds *buf)
{
#ifdef SYSCALL_IPC_BROKEN_MODE
struct shmid_ds tmp;
if (cmd == IPC_SET) {
tmp = *buf;
tmp.shm_perm.mode *= 0x10000U;
buf = &tmp;
}
#endif
#ifdef SYS_shmctl
int r = __syscall(SYS_shmctl, id, cmd | IPC_64, buf);
#else
int r = __syscall(SYS_ipc, IPCOP_shmctl, id, cmd | IPC_64, 0, buf, 0);
#endif
#ifdef SYSCALL_IPC_BROKEN_MODE
if (r >= 0) switch (cmd) {
case IPC_STAT:
case SHM_STAT:
case SHM_STAT_ANY:
buf->shm_perm.mode >>= 16;
}
#endif
return __syscall_ret(r);
}
|