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Edit: /usr/share/doc/pam/html/sag-pam_umask.html (6318B)

<html><head><meta http-equiv="Content-Type" content="text/html; charset=UTF-8"><title>6.36. pam_umask - set the file mode creation mask</title><meta name="generator" content="DocBook XSL Stylesheets Vsnapshot"><link rel="home" href="Linux-PAM_SAG.html" title="The Linux-PAM System Administrators' Guide"><link rel="up" href="sag-module-reference.html" title="Chapter 6. A reference guide for available modules"><link rel="prev" href="sag-pam_timestamp.html" title="6.35. pam_timestamp - authenticate using cached successful authentication attempts"><link rel="next" href="sag-pam_unix.html" title="6.37. pam_unix - traditional password authentication"></head><body bgcolor="white" text="black" link="#0000FF" vlink="#840084" alink="#0000FF"><div class="navheader"><table width="100%" summary="Navigation header"><tr><th colspan="3" align="center">6.36. pam_umask - set the file mode creation mask</th></tr><tr><td width="20%" align="left"><a accesskey="p" href="sag-pam_timestamp.html">Prev</a> </td><th width="60%" align="center">Chapter 6. A reference guide for available modules</th><td width="20%" align="right"> <a accesskey="n" href="sag-pam_unix.html">Next</a></td></tr></table><hr></div><div class="section"><div class="titlepage"><div><div><h2 class="title" style="clear: both"><a name="sag-pam_umask"></a>6.36. pam_umask - set the file mode creation mask</h2></div></div></div><div class="cmdsynopsis"><p><code class="command">pam_umask.so</code>  [
	debug
      ] [
        silent
      ] [
        usergroups
      ] [
        umask=<em class="replaceable"><code>mask</code></em>
      ]</p></div><div class="section"><div class="titlepage"><div><div><h3 class="title"><a name="sag-pam_umask-description"></a>6.36.1. DESCRIPTION</h3></div></div></div><p>
      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.
    </p><p>
      The PAM module tries to get the umask value from the
      following places in the following order:
      </p><div class="itemizedlist"><ul class="itemizedlist" style="list-style-type: disc; "><li class="listitem"><p>
            umask= entry in the user's GECOS field
          </p></li><li class="listitem"><p>
            umask= argument
          </p></li><li class="listitem"><p>
            UMASK entry from /etc/login.defs
          </p></li><li class="listitem"><p>
            UMASK= entry from /etc/default/login
          </p></li></ul></div><p>
    </p><p>
      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.
    </p></div><div class="section"><div class="titlepage"><div><div><h3 class="title"><a name="sag-pam_umask-options"></a>6.36.2. OPTIONS</h3></div></div></div><p>
      </p><div class="variablelist"><dl class="variablelist"><dt><span class="term">
            <code class="option">debug</code>
          </span></dt><dd><p>
	      Print debug information.
            </p></dd><dt><span class="term">
            <code class="option">silent</code>
          </span></dt><dd><p>
              Don't print informative messages.
            </p></dd><dt><span class="term">
            <code class="option">usergroups</code>
          </span></dt><dd><p>
              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 -&gt; 002, 077 -&gt; 007).
            </p></dd><dt><span class="term">
            <code class="option">umask=<em class="replaceable"><code>mask</code></em></code>
          </span></dt><dd><p>
               Sets the calling process's file mode creation mask (umask)
               to <code class="option">mask</code> &amp; 0777. The value is interpreted
               as Octal.
            </p></dd></dl></div><p>

</p></div><div class="section"><div class="titlepage"><div><div><h3 class="title"><a name="sag-pam_umask-types"></a>6.36.3. MODULE TYPES PROVIDED</h3></div></div></div><p>
      Only the <code class="option">session</code> type is provided.
    </p></div><div class="section"><div class="titlepage"><div><div><h3 class="title"><a name="sag-pam_umask-return_values"></a>6.36.4. RETURN VALUES</h3></div></div></div><p>
      </p><div class="variablelist"><dl class="variablelist"><dt><span class="term">PAM_SUCCESS</span></dt><dd><p>
              The new umask was set successfully.
            </p></dd><dt><span class="term">PAM_SERVICE_ERR</span></dt><dd><p>
	      No username was given.
            </p></dd><dt><span class="term">PAM_USER_UNKNOWN</span></dt><dd><p>
	      User not known.
            </p></dd></dl></div><p>
    </p></div><div class="section"><div class="titlepage"><div><div><h3 class="title"><a name="sag-pam_umask-examples"></a>6.36.5. EXAMPLES</h3></div></div></div><p>
      Add the following line to <code class="filename">/etc/pam.d/login</code> to
      set the user specific umask at login:
      </p><pre class="programlisting">
        session optional pam_umask.so umask=0022
      </pre><p>
    </p></div><div class="section"><div class="titlepage"><div><div><h3 class="title"><a name="sag-pam_umask-author"></a>6.36.6. AUTHOR</h3></div></div></div><p>
        pam_umask was written by Thorsten Kukuk &lt;kukuk@thkukuk.de&gt;.
      </p></div></div><div class="navfooter"><hr><table width="100%" summary="Navigation footer"><tr><td width="40%" align="left"><a accesskey="p" href="sag-pam_timestamp.html">Prev</a> </td><td width="20%" align="center"><a accesskey="u" href="sag-module-reference.html">Up</a></td><td width="40%" align="right"> <a accesskey="n" href="sag-pam_unix.html">Next</a></td></tr><tr><td width="40%" align="left" valign="top">6.35. pam_timestamp - authenticate using cached successful authentication attempts </td><td width="20%" align="center"><a accesskey="h" href="Linux-PAM_SAG.html">Home</a></td><td width="40%" align="right" valign="top"> 6.37. pam_unix - traditional password authentication</td></tr></table></div></body></html>

6.36. pam_umask - set the file mode creation mask

6.36. pam_umask - set the file mode creation mask
Prev	Chapter 6. A reference guide for available modules	Next

6.36. pam_umask - set the file mode creation mask

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

6.36.1. 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= entry in the user's GECOS field
umask= argument
UMASK entry from /etc/login.defs
UMASK= entry from /etc/default/login

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.

6.36.2. 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.

6.36.3. MODULE TYPES PROVIDED

Only the session type is provided.

6.36.4. RETURN VALUES

PAM_SUCCESS: The new umask was set successfully.
PAM_SERVICE_ERR: No username was given.
PAM_USER_UNKNOWN: User not known.

6.36.5. 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

6.36.6. AUTHOR

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

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