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-rw-r--r--fs/ceph/super.c37
1 files changed, 26 insertions, 11 deletions
diff --git a/fs/ceph/super.c b/fs/ceph/super.c
index b982239f38f9..2f586b0e5e0f 100644
--- a/fs/ceph/super.c
+++ b/fs/ceph/super.c
@@ -307,7 +307,10 @@ static int parse_mount_options(struct ceph_mount_options **pfsopt,
{
struct ceph_mount_options *fsopt;
const char *dev_name_end;
- int err = -ENOMEM;
+ int err;
+
+ if (!dev_name || !*dev_name)
+ return -EINVAL;
fsopt = kzalloc(sizeof(*fsopt), GFP_KERNEL);
if (!fsopt)
@@ -328,21 +331,33 @@ static int parse_mount_options(struct ceph_mount_options **pfsopt,
fsopt->max_readdir_bytes = CEPH_MAX_READDIR_BYTES_DEFAULT;
fsopt->congestion_kb = default_congestion_kb();
- /* ip1[:port1][,ip2[:port2]...]:/subdir/in/fs */
+ /*
+ * Distinguish the server list from the path in "dev_name".
+ * Internally we do not include the leading '/' in the path.
+ *
+ * "dev_name" will look like:
+ * <server_spec>[,<server_spec>...]:[<path>]
+ * where
+ * <server_spec> is <ip>[:<port>]
+ * <path> is optional, but if present must begin with '/'
+ */
+ dev_name_end = strchr(dev_name, '/');
+ if (dev_name_end) {
+ /* skip over leading '/' for path */
+ *path = dev_name_end + 1;
+ } else {
+ /* path is empty */
+ dev_name_end = dev_name + strlen(dev_name);
+ *path = dev_name_end;
+ }
err = -EINVAL;
- if (!dev_name)
- goto out;
- *path = strstr(dev_name, ":/");
- if (*path == NULL) {
- pr_err("device name is missing path (no :/ in %s)\n",
+ dev_name_end--; /* back up to ':' separator */
+ if (*dev_name_end != ':') {
+ pr_err("device name is missing path (no : separator in %s)\n",
dev_name);
goto out;
}
- dev_name_end = *path;
dout("device name '%.*s'\n", (int)(dev_name_end - dev_name), dev_name);
-
- /* path on server */
- *path += 2;
dout("server path '%s'\n", *path);
*popt = ceph_parse_options(options, dev_name, dev_name_end,