diff options
| -rw-r--r-- | fs/ceph/super.c | 37 |
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, |