Patch from Paul Mundt (lethal) adding an initial librt implementation.

I then reworked the syscall handling and made minor cleanups.  With luck
I've not completely broken his patch...

1 files changed, 38 insertions, 0 deletions

diff --git a/librt/mq_unlink.c b/librt/mq_unlink.c
new file mode 100644
index 000000000..aee3478e7
--- /dev/null
+++ b/librt/mq_unlink.c
@@ -0,0 +1,38 @@
+/*
+ * mq_unlink.c - remove a message queue.
+ */
+
+#include <errno.h>
+#include <sys/syscall.h>
+
+#include <mqueue.h>
+
+#ifdef __NR_mq_unlink
+
+#define __NR___syscall_mq_unlink __NR_mq_unlink
+static inline _syscall1(int, __syscall_mq_unlink, const char *, name);
+
+/* Remove message queue */
+int mq_unlink(const char *name)
+{
+    int ret;
+    if (name[0] != '/') {
+	__set_errno(EINVAL);
+	return -1;
+    }
+
+    ret = __syscall_mq_unlink(name + 1);
+
+    /* While unlink can return either EPERM or EACCES, mq_unlink should return just EACCES.  */
+    if (ret < 0) {
+	ret = errno;
+	if (ret == EPERM)
+	    ret = EACCES;
+	__set_errno(ret);
+	ret = -1;
+    }
+
+    return ret;
+}
+
+#endif