Man page 8 : pam_umask

pam_umask - PAM module to set the file mode creation mask

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

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:


    .ie n \ \h'-04'\h'+03'\c .

2.3 . umask= argument


    .ie n \ \h'-04'\h'+03'\c .

2.3 . umask= entry of the users GECOS field


    .ie n \ \h'-04'\h'+03'\c .

2.3 . pri= entry of the users GECOS field


    .ie n \ \h'-04'\h'+03'\c .

2.3 . ulimit= entry of the users GECOS field


    .ie n \ \h'-04'\h'+03'\c .

2.3 . UMASK= entry from /etc/default/login


    .ie n \ \h'-04'\h'+03'\c .

2.3 . UMASK entry from /etc/login.defs

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

Only the session type is provided.

PAM_SUCCESS
    The new umask was set successfully.

PAM_SERVICE_ERR
    No username was given.

PAM_USER_UNKNOWN
    User not known.

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


    .

       session optional pam_umask.so umask=0022

.

pam.conf(5), pam.d(5), pam(7)

pam_umask was written by Thorsten Kukuk <>.