By default, no messages are printed when mounting a CIFS filesystem. This information is valuable when troubleshooting and/or forensic analyzing a system and finding out if was a CIFS endpoint mount attempted. Other filesystems such as XFS, EXT* does issue a printk() when mounting their filesystems. Sample output: [root@ll-rhel7 ~]# mount -o user=administrator //172.25.250.18/c$ /mnt (non-existent system) [root@ll-rhel7 ~]# mount -o user=administrator //172.25.250.19/c$ /mnt (Valid system) Kernel message log: [ 450.464543] CIFS VFS: Attempting to mount //172.25.250.18/c$ [ 456.478186] CIFS VFS: Error connecting to socket. Aborting operation. [ 456.478381] CIFS VFS: cifs_mount failed w/return code = -113 [ 467.688866] CIFS VFS: Attempting to mount //172.25.250.19/c$ Signed-off-by: Rodrigo Freire <rfreire@xxxxxxxxxx> --- fs/cifs/cifsfs.c | 1 + 1 file changed, 1 insertion(+) diff --git a/fs/cifs/cifsfs.c b/fs/cifs/cifsfs.c index 7065426..3f5a31e 100644 --- a/fs/cifs/cifsfs.c +++ b/fs/cifs/cifsfs.c @@ -707,6 +707,7 @@ static int cifs_set_super(struct super_block *sb, void *data) struct cifs_mnt_data mnt_data; struct dentry *root; + cifs_dbg(VFS, "Attempting to mount %s\n", dev_name); cifs_dbg(FYI, "Devname: %s flags: %d\n", dev_name, flags); volume_info = cifs_get_volume_info((char *)data, dev_name, is_smb3); -- 1.8.3.1
