From bef1a6439db2e0d85b827d4afa65f72557450bb6 Mon Sep 17 00:00:00 2001
From: David Symonds <dsymonds@golang.org>
Date: Sat, 23 May 2009 19:39:25 -0700
Subject: [PATCH] If Make.deps is not writable (e.g. in Perforce client and not
 opened for editing), bail out immediately.

R=rsc,r
APPROVED=r
DELTA=7  (5 added, 1 deleted, 1 changed)
OCL=29319
CL=29319
---
 src/lib/Makefile  | 2 +-
 src/lib/deps.bash | 6 +++++-
 2 files changed, 6 insertions(+), 2 deletions(-)

diff --git a/src/lib/Makefile b/src/lib/Makefile
index 6539002366..8aa70cd476 100644
--- a/src/lib/Makefile
+++ b/src/lib/Makefile
@@ -5,7 +5,7 @@
 # After editing the DIRS= list or adding imports to any Go files
 # in any of those directories, run:
 #
-#	p4 edit Make.deps; ./deps.bash
+#	./deps.bash
 #
 # to rebuild the dependency information in Make.deps.
 
diff --git a/src/lib/deps.bash b/src/lib/deps.bash
index d6796c9406..db05f2a1d9 100755
--- a/src/lib/deps.bash
+++ b/src/lib/deps.bash
@@ -6,6 +6,11 @@
 OUT="Make.deps"
 TMP="Make.deps.tmp"
 
+if [ -f $OUT ] && ! [ -w $OUT ]; then
+	echo "$0: $OUT is read-only; aborting." 1>&2
+	exit 1
+fi
+
 # Get list of directories from Makefile
 dirs=$(sed '1,/^DIRS=/d; /^$/,$d; s/\\//g' Makefile)
 dirpat=$(echo $dirs | sed 's/ /|/g; s/.*/^(&)$/')
@@ -28,5 +33,4 @@ for dir in $dirs; do (
 	echo $dir.install: $deps
 ) done > $TMP
 
-p4 open $OUT
 mv $TMP $OUT
-- 
2.48.1