Darwin support for automatic-rename, from joshe.

CHANGES

@@ -1,5 +1,8 @@
 20 January 2009
 
+* Darwin support for automatic-rename from joshe; Darwin doesn't seem to have
+  a sane method of getting argv[0] and searching for the precise insane way
+  is too frustrating, so this just uses the executable name.
 * Try to change the window title to match the command running it in. This is
   done by reading argv[0] from the process group leader of the group that owns
   the tty (tcgetpgrp()). This can't be done portably so some OS-dependent code
@@ -983,7 +986,7 @@
   (including mutt, emacs). No status bar yet and no key remapping or other
   customisation.
 
-$Id: CHANGES,v 1.225 2009-01-20 19:35:03 nicm Exp $
+$Id: CHANGES,v 1.226 2009-01-20 22:17:53 nicm Exp $
 
  LocalWords:  showw utf UTF fulvio ciriaco joshe OSC APC gettime abc DEF OA clr
  LocalWords:  rivo nurges lscm Erdely eol smysession mysession ek dstname RB ms

GNUmakefile

@@ -1,4 +1,4 @@
-# $Id: GNUmakefile,v 1.64 2009-01-20 20:00:39 nicm Exp $
+# $Id: GNUmakefile,v 1.65 2009-01-20 22:17:53 nicm Exp $
 
 .PHONY: clean
 
@@ -41,7 +41,8 @@ SRCS= tmux.c server.c server-msg.c server-fn.c buffer.c buffer-poll.c status.c \
       window-choose.c \
       options.c options-cmd.c paste.c colour.c utf8.c clock.c \
       tty.c tty-term.c tty-keys.c tty-write.c util.c names.c \
-      osdep-unknown.c osdep-openbsd.c osdep-freebsd.c osdep-linux.c
+      osdep-unknown.c osdep-openbsd.c osdep-freebsd.c osdep-linux.c \
+      osdep-darwin.c
 
 CC?= gcc
 INCDIRS+= -I. -I-

Makefile

@@ -1,4 +1,4 @@
-# $Id: Makefile,v 1.103 2009-01-20 19:35:03 nicm Exp $
+# $Id: Makefile,v 1.104 2009-01-20 22:17:53 nicm Exp $
 
 .SUFFIXES: .c .o .y .h
 .PHONY: clean update-index.html upload-index.html
@@ -45,7 +45,8 @@ SRCS= tmux.c server.c server-msg.c server-fn.c buffer.c buffer-poll.c status.c \
       window-choose.c \
       options.c options-cmd.c paste.c colour.c utf8.c clock.c \
       tty.c tty-term.c tty-keys.c tty-write.c util.c names.c \
-      osdep-unknown.c osdep-openbsd.c osdep-freebsd.c osdep-linux.c
+      osdep-unknown.c osdep-openbsd.c osdep-freebsd.c osdep-linux.c \
+      osdep-darwin.c
 
 CC?= cc
 INCDIRS+= -I. -I- -I/usr/local/include

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

osdep-freebsd.c

@@ -1,4 +1,4 @@
-/* $Id: osdep-freebsd.c,v 1.1 2009-01-20 19:35:03 nicm Exp $ */
+/* $Id: osdep-freebsd.c,v 1.2 2009-01-20 22:17:53 nicm Exp $ */
 
 /*
  * Copyright (c) 2009 Nicholas Marriott <nicm@users.sourceforge.net>
@@ -45,7 +45,7 @@ get_argv0(pid_t pgrp)
 	size = 128;
 	while (size < SIZE_MAX / 2) {
 		size *= 2;
-		if ((args2 = realloc(args, 2 * size)) == NULL)
+		if ((args2 = realloc(args, size)) == NULL)
 			break;
 		args = args2;
 		if (sysctl(mib, 4, args, &size, NULL, 0) == -1) {

osdep-openbsd.c

@@ -1,4 +1,4 @@
-/* $Id: osdep-openbsd.c,v 1.1 2009-01-20 19:35:03 nicm Exp $ */
+/* $Id: osdep-openbsd.c,v 1.2 2009-01-20 22:17:53 nicm Exp $ */
 
 /*
  * Copyright (c) 2009 Nicholas Marriott <nicm@users.sourceforge.net>
@@ -44,7 +44,7 @@ get_argv0(pid_t pgrp)
 	size = 128;
 	while (size < SIZE_MAX / 2) {
 		size *= 2;
-		if ((args2 = realloc(args, 2 * size)) == NULL)
+		if ((args2 = realloc(args, size)) == NULL)
 			break;
 		args = args2;
 		if (sysctl(mib, 4, args, &size, NULL, 0) == -1) {

osdep-unknown.c

@@ -1,4 +1,4 @@
-/* $Id: osdep-unknown.c,v 1.1 2009-01-20 19:35:03 nicm Exp $ */
+/* $Id: osdep-unknown.c,v 1.2 2009-01-20 22:17:53 nicm Exp $ */
 
 /*
  * Copyright (c) 2009 Nicholas Marriott <nicm@users.sourceforge.net>
@@ -16,7 +16,8 @@
  * OUT OF OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
  */
 
-#if !defined(__OpenBSD__) && !defined(__FreeBSD__) && !defined(__linux__)
+#if !defined(__OpenBSD__) && !defined(__FreeBSD__) && !defined(__linux__) && \
+	!defined(__APPLE__)
 
 #include <sys/types.h>