implement semtimedop

this is a Linux-specific extension to the sysv semaphore api.

2 files changed, 14 insertions, 0 deletions

diff --git a/src/ipc/ipc.h b/src/ipc/ipc.h
index 5487582..30ab939 100644
--- a/src/ipc/ipc.h
+++ b/src/ipc/ipc.h
@@ -1,6 +1,7 @@
 #define IPCOP_semop      1
 #define IPCOP_semget     2
 #define IPCOP_semctl     3
+#define IPCOP_semtimedop 4
 #define IPCOP_msgsnd    11
 #define IPCOP_msgrcv    12
 #define IPCOP_msgget    13
diff --git a/src/ipc/semtimedop.c b/src/ipc/semtimedop.c
new file mode 100644
index 0000000..a3b511b
--- /dev/null
+++ b/src/ipc/semtimedop.c
@@ -0,0 +1,13 @@
+#define _GNU_SOURCE
+#include <sys/sem.h>
+#include "syscall.h"
+#include "ipc.h"
+
+int semtimedop(int id, struct sembuf *buf, size_t n, const struct timespec *ts)
+{
+#ifdef SYS_semop
+	return syscall(SYS_semtimedop, id, buf, n, ts);
+#else
+	return syscall(SYS_ipc, IPCOP_semtimedop, id, n, 0, buf, ts);
+#endif
+}