xref: /freebsd/lib/libc/gen/semctl.c (revision a82bbc730e20fe9dec4abeb1d949b2d02869032a)
1333fc21eSDavid E. O'Brien #include <sys/cdefs.h>
2333fc21eSDavid E. O'Brien __FBSDID("$FreeBSD$");
3333fc21eSDavid E. O'Brien 
45b65bca2SDoug Rabson #include <sys/types.h>
55b65bca2SDoug Rabson #include <sys/ipc.h>
65b65bca2SDoug Rabson #include <sys/sem.h>
73f58cad6SSteve Price #include <stdarg.h>
83f58cad6SSteve Price #include <stdlib.h>
95b65bca2SDoug Rabson 
103f58cad6SSteve Price int semctl(int semid, int semnum, int cmd, ...)
115b65bca2SDoug Rabson {
123f58cad6SSteve Price 	va_list ap;
133f58cad6SSteve Price 	union semun semun;
143f58cad6SSteve Price 	union semun *semun_ptr;
15a82bbc73SAlfred Perlstein 
163f58cad6SSteve Price 	va_start(ap, cmd);
173f58cad6SSteve Price 	if (cmd == IPC_SET || cmd == IPC_STAT || cmd == GETALL
183f58cad6SSteve Price 	    || cmd == SETVAL || cmd == SETALL) {
193f58cad6SSteve Price 		semun = va_arg(ap, union semun);
203f58cad6SSteve Price 		semun_ptr = &semun;
213f58cad6SSteve Price 	} else {
223f58cad6SSteve Price 		semun_ptr = NULL;
233f58cad6SSteve Price 	}
243f58cad6SSteve Price 	va_end(ap);
253f58cad6SSteve Price 
263f58cad6SSteve Price 	return (__semctl(semid, semnum, cmd, semun_ptr));
275b65bca2SDoug Rabson }
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