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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