Darwin support for automatic-rename, from joshe.

osdep-darwin.c

@@ -0,0 +1,50 @@
+/* $Id: osdep-darwin.c,v 1.1 2009-01-20 22:17:53 nicm Exp $ */
+
+/*
+ * Copyright (c) 2009 Joshua Elsasser <josh@elsasser.org>
+ *
+ * Permission to use, copy, modify, and distribute this software for any
+ * purpose with or without fee is hereby granted, provided that the above
+ * copyright notice and this permission notice appear in all copies.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
+ * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
+ * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
+ * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
+ * WHATSOEVER RESULTING FROM LOSS OF MIND, USE, DATA OR PROFITS, WHETHER
+ * IN AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING
+ * OUT OF OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
+ */
+
+#ifdef __APPLE__
+
+#include <sys/types.h>
+#include <sys/sysctl.h>
+
+#include <stdlib.h>
+
+char	*get_argv0(pid_t);
+
+/*
+ * XXX This actually returns the executable path, not the process's argv[0].
+ * Anyone who wishes to complain about this is welcome to grab a copy of
+ * Apple's 'ps' source and start digging.
+ */
+
+char *
+get_argv0(pid_t pgrp)
+{
+	int	mib[4] = { CTL_KERN, KERN_PROC, KERN_PROC_PID, 0 };
+        size_t	size;
+	struct kinfo_proc kp;
+	
+	mib[3] = pgrp;
+	size = sizeof kp;
+	if (sysctl(mib, 4, &kp, &size, NULL, 0) == -1 ||
+	    kp.kp_proc.p_comm[0] == '\0')
+		return (NULL);
+
+	return (strdup(kp.kp_proc.p_comm));
+}
+
+#endif