From f94825c10c1c8f003e80859530cce8ceea1bd314 Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Carlos=20Mart=C3=ADn=20Nieto?= <cmn@dwim.me>
Date: Thu, 24 Dec 2015 17:21:51 +0000
Subject: [PATCH] fileops: save errno and report file existence

We need to save the errno, lest we clobber it in the giterr_set()
call. Also add code for reporting that a path component is missing,
which is a distinct failure mode.
---
 src/fileops.c | 10 +++++++++-
 1 file changed, 9 insertions(+), 1 deletion(-)

diff --git a/src/fileops.c b/src/fileops.c
index fcc0301f9..a82202c98 100644
--- a/src/fileops.c
+++ b/src/fileops.c
@@ -72,8 +72,16 @@ int git_futils_creat_locked(const char *path, const mode_t mode)
 		O_EXCL | O_BINARY | O_CLOEXEC, mode);
 
 	if (fd < 0) {
+		int error = errno;
 		giterr_set(GITERR_OS, "Failed to create locked file '%s'", path);
-		return errno == EEXIST ? GIT_ELOCKED : -1;
+		switch (error) {
+		case EEXIST:
+			return GIT_ELOCKED;
+		case ENOENT:
+			return GIT_ENOTFOUND;
+		default:
+			return -1;
+		}
 	}
 
 	return fd;