From: Timo Sirainen <tss@iki.fi>
Date: Fri, 13 Sep 2013 21:26:45 +0000 (+0300)
Subject: lib-fs: If backend doesn't implement exists(), emulate it with stat().
X-Git-Tag: 2.2.6~96
X-Git-Url: http://git.ipfire.org/?a=commitdiff_plain;h=b6ecc96ac80d70e25a5e83d14383e2b8e17d29dd;p=thirdparty%2Fdovecot%2Fcore.git

lib-fs: If backend doesn't implement exists(), emulate it with stat().
---

diff --git a/src/lib-fs/fs-api.c b/src/lib-fs/fs-api.c
index 5fb99584dd..899d1ed172 100644
--- a/src/lib-fs/fs-api.c
+++ b/src/lib-fs/fs-api.c
@@ -536,8 +536,16 @@ void fs_unlock(struct fs_lock **_lock)
 
 int fs_exists(struct fs_file *file)
 {
+	struct stat st;
 	int ret;
 
+	if (file->fs->v.exists == NULL) {
+		/* fallback to stat() */
+		if (fs_stat(file, &st) == 0)
+			return 1;
+		else
+			return errno == ENOENT ? 0 : -1;
+	}
 	T_BEGIN {
 		ret = file->fs->v.exists(file);
 	} T_END;