1PAM_UMASK(8) Linux-PAM Manual PAM_UMASK(8)
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6 pam_umask - PAM module to set the file mode creation mask
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9 pam_umask.so [debug] [silent] [usergroups] [umask=mask]
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12 pam_umask is a PAM module to set the file mode creation mask of the
13 current environment. The umask affects the default permissions assigned
14 to newly created files.
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16 The PAM module tries to get the umask value from the following places
17 in the following order:
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19 · umask= entry in the user's GECOS field
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21 · umask= argument
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23 · UMASK entry from /etc/login.defs
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25 · UMASK= entry from /etc/default/login
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27 The GECOS field is split on comma ',' characters. The module also in
28 addition to the umask= entry recognizes pri= entry, which sets the nice
29 priority value for the session, and ulimit= entry, which sets the
30 maximum size of files the processes in the session can create.
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33 debug
34 Print debug information.
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36 silent
37 Don't print informative messages.
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39 usergroups
40 If the user is not root and the username is the same as primary
41 group name, the umask group bits are set to be the same as owner
42 bits (examples: 022 -> 002, 077 -> 007).
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44 umask=mask
45 Sets the calling process's file mode creation mask (umask) to mask
46 & 0777. The value is interpreted as Octal.
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49 Only the session type is provided.
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52 PAM_SUCCESS
53 The new umask was set successfully.
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55 PAM_SERVICE_ERR
56 No username was given.
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58 PAM_USER_UNKNOWN
59 User not known.
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62 Add the following line to /etc/pam.d/login to set the user specific
63 umask at login:
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65 session optional pam_umask.so umask=0022
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70 pam.conf(5), pam.d(5), pam(8)
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73 pam_umask was written by Thorsten Kukuk <kukuk@thkukuk.de>.
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77Linux-PAM Manual 05/18/2018 PAM_UMASK(8)