use xgetcwd() to get the current directory or die

Convert several calls of getcwd() and die() to use xgetcwd() instead.
This way we get rid of fixed-size buffers (which can be too small
depending on the used file system) and gain consistent error messages.

Signed-off-by: Rene Scharfe <l.s.r@web.de>
Signed-off-by: Junio C Hamano <gitster@pobox.com>

1 files changed, 8 insertions, 4 deletions

diff --git a/dir.c b/dir.c
index 797805d6a1..2c50ccfb49 100644
--- a/dir.c
+++ b/dir.c
@@ -1500,12 +1500,16 @@ int dir_inside_of(const char *subdir, const char *dir)
 
 int is_inside_dir(const char *dir)
 {
-	char cwd[PATH_MAX];
+	char *cwd;
+	int rc;
+
 	if (!dir)
 		return 0;
-	if (!getcwd(cwd, sizeof(cwd)))
-		die_errno("can't find the current directory");
-	return dir_inside_of(cwd, dir) >= 0;
+
+	cwd = xgetcwd();
+	rc = (dir_inside_of(cwd, dir) >= 0);
+	free(cwd);
+	return rc;
 }
 
 int is_empty_dir(const char *path)