src/ipc/semget.c

   1 #include <sys/sem.h>
   2 #include <limits.h>
   3 #include <errno.h>
   4 #include "syscall.h"
   5 #include "ipc.h"
   6
   7 int semget(key_t key, int n, int fl)
   8 {
   9         /* The kernel uses the wrong type for the sem_nsems member
  10          * of struct semid_ds, and thus might not check that the
  11          * n fits in the correct (per POSIX) userspace type, so
  12          * we have to check here. */
  13         if (n > USHRT_MAX) return __syscall_ret(-EINVAL);
  14 #ifdef SYS_semget
  15         return syscall(SYS_semget, key, n, fl);
  16 #else
  17         return syscall(SYS_ipc, IPCOP_semget, key, n, fl);
  18 #endif
  19 }