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:

       ·   umask= argument

       ·   umask= entry in the user's GECOS field

       ·   UMASK= entry from /etc/default/login

       ·   UMASK entry from /etc/login.defs

       The GECOS field is split on comma ',' characters. The module also in addition to the
       umask= entry recognizes pri= entry, which sets the nice priority value for the session,
       and ulimit= entry, which sets the maximum size of files the processes in the session can
       create.

OPTIONS
       debug
           Print debug information.

       silent
           Don't print informative messages.

       usergroups
           If the user is not root 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(7)

AUTHOR
       pam_umask was written by Thorsten Kukuk <kukuk AT thkukuk.de>.



Linux-PAM Manual                            09/19/2013                               PAM_UMASK(8)