[PATCH] mount.cifs: strip leading delimiter off of prefixpath option

...the kernel doesn't expect to see it and it causes a regression
when mounting some UNCs.

Reported-by: Ales Zelinka <[email protected]>
Signed-off-by: Jeff Layton <[email protected]>
---
 mount.cifs.c |    4 +++-
 1 files changed, 3 insertions(+), 1 deletions(-)

diff --git a/mount.cifs.c b/mount.cifs.c
index 1040e8b..6e5afe3 100644
--- a/mount.cifs.c
+++ b/mount.cifs.c
@@ -1168,7 +1168,7 @@ static int parse_unc(const char *unc_name, struct parsed_mount_info *parsed_info
 		return EX_USAGE;
 	}
 
-	prepath = share + sharelen;
+	prepath = share + sharelen + 1;
 	prepathlen = strlen(prepath);
 
 	if (prepathlen + 1 > sizeof(parsed_info->prefix)) {
@@ -1669,6 +1669,7 @@ int main(int argc, char **argv)
 		goto mount_exit;
 	}
 
+	/* lengths of different strings + slashes + trailing \0 */
 	dev_len = strnlen(parsed_info->host, sizeof(parsed_info->host)) +
 	    strnlen(parsed_info->share, sizeof(parsed_info->share)) +
 	    strnlen(parsed_info->prefix, sizeof(parsed_info->prefix)) +
@@ -1684,6 +1685,7 @@ int main(int argc, char **argv)
 	strlcat(dev_name, parsed_info->host, dev_len);
 	strlcat(dev_name, "/", dev_len);
 	strlcat(dev_name, parsed_info->share, dev_len);
+	strlcat(dev_name, "/", dev_len);
 	strlcat(dev_name, parsed_info->prefix, dev_len);
 
 	currentaddress = parsed_info->addrlist;
-- 
1.6.6.1