From e5e69abd058b3fcfd484dbe1c632347332cda9b6 Mon Sep 17 00:00:00 2001 From: Jeff Layton Date: Sun, 25 Nov 2012 08:00:42 -0500 Subject: [PATCH] cifs: make error on lack of a unc= option more explicit Error out with a clear error message if there is no unc= option. The existing code doesn't handle this in a clear fashion, and the check for a UNCip option with no UNC string is just plain wrong. Later, we'll fix the code to not require a unc= option, but for now we need this to at least clarify why people are getting errors about DFS parsing. With this change we can also get rid of some later NULL pointer checks since we know the UNC and UNCip will never be NULL there. Signed-off-by: Jeff Layton Signed-off-by: Steve French --- fs/cifs/connect.c | 19 +++++-------------- 1 file changed, 5 insertions(+), 14 deletions(-) diff --git a/fs/cifs/connect.c b/fs/cifs/connect.c index 32fb50e7932b..a48387265cd4 100644 --- a/fs/cifs/connect.c +++ b/fs/cifs/connect.c @@ -1799,6 +1799,11 @@ cifs_parse_mount_options(const char *mountdata, const char *devname, goto cifs_parse_mount_err; } #endif + if (!vol->UNC) { + cERROR(1, "CIFS mount error: No UNC path (e.g. -o " + "unc=\\\\192.168.1.100\\public) specified"); + goto cifs_parse_mount_err; + } if (vol->UNCip == NULL) vol->UNCip = &vol->UNC[2]; @@ -2070,17 +2075,6 @@ cifs_get_tcp_session(struct smb_vol *volume_info) rc = -EINVAL; goto out_err; } - } else if (volume_info->UNCip) { - /* BB using ip addr as tcp_ses name to connect to the - DFS root below */ - cERROR(1, "Connecting to DFS root not implemented yet"); - rc = -EINVAL; - goto out_err; - } else /* which tcp_sess DFS root would we conect to */ { - cERROR(1, "CIFS mount error: No UNC path (e.g. -o " - "unc=//192.168.1.100/public) specified"); - rc = -EINVAL; - goto out_err; } /* see if we already have a matching tcp_ses */ @@ -2726,9 +2720,6 @@ cifs_match_super(struct super_block *sb, void *data) volume_info = mnt_data->vol; - if (!volume_info->UNCip || !volume_info->UNC) - goto out; - rc = cifs_fill_sockaddr((struct sockaddr *)&addr, volume_info->UNCip, strlen(volume_info->UNCip), -- GitLab