github.com/afumu/libc@v0.0.6/musl/src/ipc/semget.c (about)

     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  #ifndef SYS_ipc
    15  	return syscall(SYS_semget, key, n, fl);
    16  #else
    17  	return syscall(SYS_ipc, IPCOP_semget, key, n, fl);
    18  #endif
    19  }