diff options
Diffstat (limited to 'lib/libc/gen/semctl.c')
-rw-r--r-- | lib/libc/gen/semctl.c | 27 |
1 files changed, 27 insertions, 0 deletions
diff --git a/lib/libc/gen/semctl.c b/lib/libc/gen/semctl.c new file mode 100644 index 0000000..a449cac --- /dev/null +++ b/lib/libc/gen/semctl.c @@ -0,0 +1,27 @@ +#include <sys/cdefs.h> +__FBSDID("$FreeBSD$"); + +#include <sys/types.h> +#include <sys/ipc.h> +#include <sys/sem.h> +#include <stdarg.h> +#include <stdlib.h> + +int semctl(int semid, int semnum, int cmd, ...) +{ + va_list ap; + union semun semun; + union semun *semun_ptr; + + va_start(ap, cmd); + if (cmd == IPC_SET || cmd == IPC_STAT || cmd == GETALL + || cmd == SETVAL || cmd == SETALL) { + semun = va_arg(ap, union semun); + semun_ptr = &semun; + } else { + semun_ptr = NULL; + } + va_end(ap); + + return (__semctl(semid, semnum, cmd, semun_ptr)); +} |