[PATCH 01/15] vcs-svn: Check for errors from open()

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test-svn-fe segfaults when passed a bogus path.  Simplify debugging by
exiting with a meaningful error message instead.

Signed-off-by: Jonathan Nieder <jrnieder@xxxxxxxxx>
---
Doesn't belong in this series, just something I noticed while
debugging.

 contrib/svn-fe/svn-fe.c |    3 ++-
 test-svn-fe.c           |    3 ++-
 vcs-svn/svndump.c       |    6 ++++--
 vcs-svn/svndump.h       |    2 +-
 4 files changed, 9 insertions(+), 5 deletions(-)

diff --git a/contrib/svn-fe/svn-fe.c b/contrib/svn-fe/svn-fe.c
index a2677b0..35db24f 100644
--- a/contrib/svn-fe/svn-fe.c
+++ b/contrib/svn-fe/svn-fe.c
@@ -8,7 +8,8 @@
 
 int main(int argc, char **argv)
 {
-	svndump_init(NULL);
+	if (svndump_init(NULL))
+		return 1;
 	svndump_read((argc > 1) ? argv[1] : NULL);
 	svndump_deinit();
 	svndump_reset();
diff --git a/test-svn-fe.c b/test-svn-fe.c
index 77cf78a..b42ba78 100644
--- a/test-svn-fe.c
+++ b/test-svn-fe.c
@@ -9,7 +9,8 @@ int main(int argc, char *argv[])
 {
 	if (argc != 2)
 		usage("test-svn-fe <file>");
-	svndump_init(argv[1]);
+	if (svndump_init(argv[1]))
+		return 1;
 	svndump_read(NULL);
 	svndump_deinit();
 	svndump_reset();
diff --git a/vcs-svn/svndump.c b/vcs-svn/svndump.c
index 6b64c1b..db11851 100644
--- a/vcs-svn/svndump.c
+++ b/vcs-svn/svndump.c
@@ -290,14 +290,16 @@ void svndump_read(const char *url)
 		handle_revision();
 }
 
-void svndump_init(const char *filename)
+int svndump_init(const char *filename)
 {
-	buffer_init(filename);
+	if (buffer_init(filename))
+		return error("cannot open %s: %s", filename, strerror(errno));
 	repo_init();
 	reset_dump_ctx(~0);
 	reset_rev_ctx(0);
 	reset_node_ctx(NULL);
 	init_keys();
+	return 0;
 }
 
 void svndump_deinit(void)
diff --git a/vcs-svn/svndump.h b/vcs-svn/svndump.h
index 93c412f..df9ceb0 100644
--- a/vcs-svn/svndump.h
+++ b/vcs-svn/svndump.h
@@ -1,7 +1,7 @@
 #ifndef SVNDUMP_H_
 #define SVNDUMP_H_
 
-void svndump_init(const char *filename);
+int svndump_init(const char *filename);
 void svndump_read(const char *url);
 void svndump_deinit(void);
 void svndump_reset(void);
-- 
1.7.2.3

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