I'm trying to mount a share and passing credentials through environment variables. This used to work correctly with smbfs

root@dev:~# mount.cifs -V
mount.cifs version: 1.10-3.0.26a
root@vslad-dev:~# uname -a
Linux dev 2.6.22-14-generic #1 SMP Tue Feb 12 07:42:25 UTC 2008 i686 GNU/Linux
root@dev:~# export USER=dummyUser
root@dev:~# export PASSWD=pass1
root@dev:~# mkdir /tmp/mountpoint

mount --verbose shows that user is set to root whereas I set USER to something different.

root@dev:~# mount --verbose -t cifs //10.0.0.2/public /tmp/mountpoint
parsing options: rw

mount.cifs kernel mount options unc=//10.0.0.2\public,ip=10.0.0.2,user=root,pass=pass1,ver=1,rw
mount error 13 = Permission denied
Refer to the mount.cifs(8) manual page (e.g.man mount.cifs)

PASSWD is correctly picked up though

root@dev:~# export PASSWD=pass2
root@dev:~# mount --verbose -t cifs //10.0.0.2/public /tmp/m
parsing options: rw

mount.cifs kernel mount options unc=//10.0.0.2\public,ip=10.0.0.2,user=root,pass=pass2,ver=1,rw
mount error 13 = Permission denied
Refer to the mount.cifs(8) manual page (e.g.man mount.cifs)

-o user= works as well

root@dev:~# mount --verbose -t cifs //10.0.0.2/public /tmp/mountpoint -o user=test
parsing options: rw,user=test

mount.cifs kernel mount options unc=//10.0.0.2\public,ip=10.0.0.2,pass=pass2,ver=1,rw,user=test
mount error 13 = Permission denied
Refer to the mount.cifs(8) manual page (e.g.man mount.cifs)
root@dev:~# mount --verbose -t cifs //10.0.0.2/public /tmp/mountpoint -o user=test,password=pass3
parsing options: rw,user=test,password=pass3

mount.cifs warning - password specified twice

mount.cifs kernel mount options unc=//10.0.0.2\public,ip=10.0.0.2,pass=pass2,ver=1,rw,user=test,password=pass3
mount error 13 = Permission denied
Refer to the mount.cifs(8) manual page (e.g.man mount.cifs)