Distro: Fc20, CIfS version: 2.2, Samba server: SL linux 6.1 running samba version 3.6 Attempting to mount share on server results in request for password even though credentials file is provided on the command line as per following: $ /usr/local/sbin/mount.cifs //sambaserv/k-rdat ~/k-rdat/ -v -o credentials=/home/jbk/.samba/.jbk Password for jbk@//sambaserv/k-rdat: *********** mount.cifs kernel mount options: ip=10.251.227.4,unc=\\sambaserv\k-rdat,uid=501,gid=501,user=jbk,pass=******** I have created the requisite entry in fstab: //sambaserv/k-rdat /home/jbk/k-rdat cifs user 0 0 Using the client utility I am able to access the share without a password challenge. $ smbclient //sambaserv/k-rdat -d 3 -A ~/.samba/.jbk lp_load_ex: refreshing parameters Initialising global parameters rlimit_max: increasing rlimit_max (1024) to minimum Windows limit (16384) params.c:pm_process() - Processing configuration file "/etc/samba/smb.conf" Processing section "[global]" added interface enp0s25 ip=10.251.227.9 bcast=10.255.255.255 netmask=255.0.0.0 Client started (version 4.1.3). tdb(/var/lib/samba/gencache.tdb): tdb_open_ex: could not open file /var/lib/samba/gencache.tdb: Permission denied tdb(/var/lib/samba/gencache.tdb): tdb_open_ex: could not open file /var/lib/samba/gencache.tdb: No such file or directory tdb(/var/lib/samba/gencache.tdb): tdb_open_ex: could not open file /var/lib/samba/gencache.tdb: Permission denied tdb(/var/lib/samba/gencache.tdb): tdb_open_ex: could not open file /var/lib/samba/gencache.tdb: No such file or directory resolve_lmhosts: Attempting lmhosts lookup for name sambaserv<0x20> resolve_lmhosts: Attempting lmhosts lookup for name sambaserv<0x20> resolve_wins: WINS server resolution selected and no WINS servers listed. resolve_hosts: Attempting host lookup for name sambaserv<0x20> tdb(/var/lib/samba/gencache.tdb): tdb_open_ex: could not open file /var/lib/samba/gencache.tdb: Permission denied tdb(/var/lib/samba/gencache.tdb): tdb_open_ex: could not open file /var/lib/samba/gencache.tdb: No such file or directory Connecting to 10.251.227.4 at port 445 Doing spnego session setup (blob length=42) got OID=1.3.6.1.4.1.311.2.2.10 got principal=NONE Got challenge flags: Got NTLMSSP neg_flags=0x608a8215 NTLMSSP: Set final flags: Got NTLMSSP neg_flags=0x60088215 NTLMSSP Sign/Seal - Initialising with flags: Got NTLMSSP neg_flags=0x60088215 Domain=[KR] OS=[Unix] Server=[Samba 3.6.9-167.el6_5] smb: \> exit
This is expected behavior. mount.cifs ignores options passed in from the command line via "-o" when run by an unprivileged user. If you add the "credentials=" option to the options string in /etc/fstab then it should be respected. FWIW, running mount.cifs directly as a setuid program is not recommended at all. There are likely security issues in doing so.