wrapper.c: add and use fopen_or_warn()

When fopen() returns NULL, it could be because the given path does not
exist, but it could also be some other errors and the caller has to
check. Add a wrapper so we don't have to repeat the same error check
everywhere.

Signed-off-by: Nguyễn Thái Ngọc Duy <pclouds@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>

1 files changed, 2 insertions, 5 deletions

diff --git a/attr.c b/attr.c
index 7e2134471..821203e2a 100644
--- a/attr.c
+++ b/attr.c
@@ -720,16 +720,13 @@ void git_attr_set_direction(enum git_attr_direction new_direction,
 
 static struct attr_stack *read_attr_from_file(const char *path, int macro_ok)
 {
-	FILE *fp = fopen(path, "r");
+	FILE *fp = fopen_or_warn(path, "r");
 	struct attr_stack *res;
 	char buf[2048];
 	int lineno = 0;
 
-	if (!fp) {
-		if (errno != ENOENT && errno != ENOTDIR)
-			warn_on_inaccessible(path);
+	if (!fp)
 		return NULL;
-	}
 	res = xcalloc(1, sizeof(*res));
 	while (fgets(buf, sizeof(buf), fp)) {
 		char *bufp = buf;