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NAME | SYNOPSIS | DESCRIPTION | OPTIONS | MODULE TYPES PROVIDED | RETURN VALUES | EXAMPLES | SEE ALSO | AUTHOR | COLOPHON |
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PAM_UMASK(8) Linux-PAM Manual PAM_UMASK(8)
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:
• 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.
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.
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(8)
pam_umask was written by Thorsten Kukuk <kukuk@thkukuk.de>.
This page is part of the linux-pam (Pluggable Authentication Modules
for Linux) project. Information about the project can be found at
⟨http://www.linux-pam.org/⟩. If you have a bug report for this manual
page, see ⟨//www.linux-pam.org/⟩. This page was obtained from the
tarball Linux-PAM-1.3.0.tar.bz2 fetched from
⟨http://www.linux-pam.org/library/⟩ on 2020-11-01. If you discover
any rendering problems in this HTML version of the page, or you be‐
lieve there is a better or more up-to-date source for the page, or
you have corrections or improvements to the information in this
COLOPHON (which is not part of the original manual page), send a mail
to man-pages@man7.org
Linux-PAM Manual 04/01/2016 PAM_UMASK(8)
Pages that refer to this page: systemd.exec(5)
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