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-rw-r--r--lib/libc/gen/semctl.c27
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));
+}
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