Added check for SGI IRIX brokenness with semaphores when using gcc.

Code from Don Badrak <dbadrak@census.gov>
Jeremy.
(This used to be commit 773d6e504b1ac97f0d8136002ace2c0c0771a163)

1 files changed, 46 insertions, 0 deletions

diff --git a/source3/tests/sgi_sysv_hack.c b/source3/tests/sgi_sysv_hack.c
new file mode 100644
index 0000000000..0fb16f11f8
--- /dev/null
+++ b/source3/tests/sgi_sysv_hack.c
@@ -0,0 +1,46 @@
+/* this tests if we need to define SGI_SEMUN_HACK
+   if we're using gcc on IRIX 6.5.x. */
+
+#if defined(HAVE_UNISTD_H)
+#include <unistd.h>
+#endif
+#include <sys/types.h>
+#include <sys/stat.h>
+#include <sys/ipc.h>
+#include <sys/shm.h>
+#include <sys/sem.h>
+
+#ifndef HAVE_UNION_SEMUN
+union semun {
+	int val;
+	struct semid_ds *buf;
+	unsigned short *array;
+};
+#endif
+
+union semun_hack {
+ int val;
+ struct semid_ds *buf;
+ unsigned short *array;
+ char __dummy[5];
+};
+
+main() {
+  struct semid_ds sem_ds;
+  union semun_hack suh;
+  union semun su;
+  int sem_id, ret;
+
+  ret = 1;
+  sem_id = semget(0xdead6666,1,IPC_CREAT|IPC_EXCL|0777);
+  su.buf = &sem_ds;
+  suh.buf = &sem_ds;
+  if (sem_id != -1) {
+    if ((semctl(sem_id, 0, IPC_STAT, su) == -1) &&
+        (semctl(sem_id, 0, IPC_STAT, suh) != -1)) {
+      ret = 0;
+    }
+  }
+  semctl(sem_id, 0, IPC_RMID, 0);
+  return ret;
+}