PAM_UMASK(8)                                            Linux-PAM Manual                                            PAM_UMASK(8)



NAME
       pam_umask - PAM module to set the file mode creation mask

SYNOPSIS
       pam_umask.so [debug] [silent] [usergroups] [umask=mask]

DESCRIPTION
       pam_umask is a PAM module to set the file mode creation mask of the current environment. The umask affects the default
       permissions assigned to newly created files.

       The PAM module tries to get the umask value from the following places in the following order:

       o   umask= argument

       o   umask= entry of the users GECOS field

       o   pri= entry of the users GECOS field

       o   ulimit= entry of the users GECOS field

       o   UMASK= entry from /etc/default/login

       o   UMASK entry from /etc/login.defs


OPTIONS
       debug
           Print debug information.

       silent
           Don't print informative messages.

       usergroups
           If the user is not root, and the user ID is equal to the group ID, and the username is the same as primary group
           name, the umask group bits are set to be the same as owner bits (examples: 022 -> 002, 077 -> 007).

       umask=mask
           Sets the calling process's file mode creation mask (umask) to mask & 0777. The value is interpreted as Octal.

MODULE TYPES PROVIDED
       Only the session type is provided.

RETURN VALUES
       PAM_SUCCESS
           The new umask was set successfully.

       PAM_SERVICE_ERR
           No username was given.

       PAM_USER_UNKNOWN
           User not known.

EXAMPLES
       Add the following line to /etc/pam.d/login to set the user specific umask at login:

                   session optional pam_umask.so umask=0022



SEE ALSO
       pam.conf(5), pam.d(5), pam(8)

AUTHOR
       pam_umask was written by Thorsten Kukuk <kukukATthkukuk.de>.



Linux-PAM Manual                                           06/16/2009                                               PAM_UMASK(8)