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authorRich Felker <dalias@aerifal.cx>2012-09-22 08:02:42 -0400
committerRich Felker <dalias@aerifal.cx>2012-09-22 08:02:42 -0400
commitfce46bf980a82bad9e6c083066cae4813649ebf5 (patch)
tree076e0e1317bda0fd4b29d43183b3c2465bb7d903 /src/ipc
parent0b3e2257fa9f4c4773f8aec1bdbccbc46a4d9477 (diff)
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fix broken semctl on systems that don't use IPC_64 flag
not tested on mips and arm; they may still be broken. x86_64 should be
ok now.
Diffstat (limited to 'src/ipc')
-rw-r--r--src/ipc/semctl.c8
1 files changed, 6 insertions, 2 deletions
diff --git a/src/ipc/semctl.c b/src/ipc/semctl.c
index a210e20b..9de5b1d7 100644
--- a/src/ipc/semctl.c
+++ b/src/ipc/semctl.c
@@ -3,6 +3,10 @@
 #include "syscall.h"
 #include "ipc.h"
 
+#ifndef IPC_64
+#define IPC_64 0
+#endif
+
 int semctl(int id, int num, int cmd, ...)
 {
 	long arg;
@@ -11,8 +15,8 @@ int semctl(int id, int num, int cmd, ...)
 	arg = va_arg(ap, long);
 	va_end(ap);
 #ifdef SYS_semctl
-	return syscall(SYS_semctl, id, num, cmd | 0x100, arg);
+	return syscall(SYS_semctl, id, num, cmd | IPC_64, arg);
 #else
-	return syscall(SYS_ipc, IPCOP_semctl, id, num, cmd | 0x100, &arg);
+	return syscall(SYS_ipc, IPCOP_semctl, id, num, cmd | IPC_64, &arg);
 #endif
 }