X-Git-Url: http://nsz.repo.hu/git/?a=blobdiff_plain;f=src%2Fipc%2Fsemctl.c;h=673a9a8c996b2bd18657b1dff7f6934ec34b2d69;hb=7c82870d4543f0eeb0e3a2638b083ff97b41a0fb;hp=7ada116bf5d90436c01d22eeb3f0ec477c7f0769;hpb=0b44a0315b47dd8eced9f3b7f31580cf14bbfc01;p=musl

diff --git a/src/ipc/semctl.c b/src/ipc/semctl.c
index 7ada116b..673a9a8c 100644
--- a/src/ipc/semctl.c
+++ b/src/ipc/semctl.c
@@ -3,16 +3,26 @@
 #include "syscall.h"
 #include "ipc.h"
 
+union semun {
+	int val;
+	struct semid_ds *buf;
+	unsigned short *array;
+};
+
 int semctl(int id, int num, int cmd, ...)
 {
-	long arg;
+	union semun arg = {0};
 	va_list ap;
-	va_start(ap, cmd);
-	arg = va_arg(ap, long);
-	va_end(ap);
-#ifdef __NR_semctl
-	return syscall4(__NR_semctl, id, num, cmd, arg);
+	switch (cmd) {
+	case SETVAL: case GETALL: case SETALL: case IPC_STAT: case IPC_SET:
+	case IPC_INFO: case SEM_INFO: case SEM_STAT:
+		va_start(ap, cmd);
+		arg = va_arg(ap, union semun);
+		va_end(ap);
+	}
+#ifdef SYS_semctl
+	return syscall(SYS_semctl, id, num, cmd | IPC_64, arg.buf);
 #else
-	return syscall5(__NR_ipc, IPCOP_semctl, id, num, cmd | 0x100, (long)&arg);
+	return syscall(SYS_ipc, IPCOP_semctl, id, num, cmd | IPC_64, &arg.buf);
 #endif
 }