From 37d4f99b55d46d9f71f4769faf74c95adb2c1daf Mon Sep 17 00:00:00 2001 From: Jeff Layton Date: Fri, 24 May 2013 07:40:05 -0400 Subject: cifs: fix error handling when calling cifs_parse_devname When we allowed separate unc= and prefixpath= mount options, we could ignore EINVAL errors from cifs_parse_devname. Now that they are deprecated, we need to check for that as well and fail the mount if it's malformed. Also fix a later error message that refers to the unc= option. Signed-off-by: Jeff Layton Signed-off-by: Steve French --- fs/cifs/connect.c | 22 +++++++++++++--------- 1 file changed, 13 insertions(+), 9 deletions(-) (limited to 'fs/cifs/connect.c') diff --git a/fs/cifs/connect.c b/fs/cifs/connect.c index 0a7fdc31f253..5b97e56ddbca 100644 --- a/fs/cifs/connect.c +++ b/fs/cifs/connect.c @@ -1258,14 +1258,18 @@ cifs_parse_mount_options(const char *mountdata, const char *devname, vol->backupuid_specified = false; /* no backup intent for a user */ vol->backupgid_specified = false; /* no backup intent for a group */ - /* - * For now, we ignore -EINVAL errors under the assumption that the - * unc= and prefixpath= options will be usable. - */ - if (cifs_parse_devname(devname, vol) == -ENOMEM) { - printk(KERN_ERR "CIFS: Unable to allocate memory to parse " - "device string.\n"); - goto out_nomem; + switch (cifs_parse_devname(devname, vol)) { + case 0: + break; + case -ENOMEM: + cifs_dbg(VFS, "Unable to allocate memory for devname.\n"); + goto cifs_parse_mount_err; + case -EINVAL: + cifs_dbg(VFS, "Malformed UNC in devname.\n"); + goto cifs_parse_mount_err; + default: + cifs_dbg(VFS, "Unknown error parsing devname.\n"); + goto cifs_parse_mount_err; } while ((data = strsep(&options, separator)) != NULL) { @@ -1827,7 +1831,7 @@ cifs_parse_mount_options(const char *mountdata, const char *devname, } #endif if (!vol->UNC) { - cifs_dbg(VFS, "CIFS mount error: No usable UNC path provided in device string or in unc= option!\n"); + cifs_dbg(VFS, "CIFS mount error: No usable UNC path provided in device string!\n"); goto cifs_parse_mount_err; } -- cgit v1.2.3-55-g7522