CAPABILITY.CONF(5)                       Linux-PAM Manual                      CAPABILITY.CONF(5)



NAME
       capablity.conf - configuration file for the pam_cap module

DESCRIPTION
       Each line of the file consists of two fields; the fields define:

       <capability-list>

           One or more comma-separated capabilities, specified as either the textual capability
           name, or numeric capability value.  Text name(s) and numeric value(s) may be
           intermixed.

           The special capability name all may be used to enable all capabilities known to the
           local system.

           The special capability name none may be used to disable all current inheritable
           capabilities.

           NOTE: No whitespace is pemitted between the values.  The names all and none may not be
           combined with any other capabilities.

       <username>

           One or more whitespace-separated usernames, or the wildcard *.

           NOTE: The first matching entry is used.  Thus, only a single matching username entry,
           and/or a single wildcard entry, may be used.  A matching username entry must precede
           the wildcard entry in order to be effective.

       IMPORTANT: <capability-list> replaces the current process' inherited capabilities; i.e.
       there is no provision for adding/subtracting from the current set.  In most environments,
       the inheritable set of the process performing user authentication is 0 (empty).

       If any capability name or numeric value is invalid/unknown to the local system, the
       capabilities will be rejected, and the inheritable set will not be modified.

EXAMPLES
       These are some example lines which might be specified in /etc/security/capability.conf.

           # Simple
           cap_sys_ptrace               developer
           cap_net_raw                  user1

           # Multiple capablities
           cap_net_admin,cap_net_raw    jrnetadmin
           # Identical, but with numeric values
           12,13                        jrnetadmin

           # Combining names and numerics
           cap_sys_admin,22,25          jrsysadmin

           # Next line has no effect; user1 already matched above
           5,12,13                      user1

           # Insure any potential capailities from calling process are dropped
           none                         luser1 luser2

           # Allow anyone to manipulate capabilities
           # Will NOT apply to users matched above !
           cap_setpcap                  *


SEE ALSO
       pam_cap(8), pam.d(5), pam(7), capabilities(7)

AUTHOR
       pam_cap was initially written by Andrew G. Morgan <morgan AT kernel.org>



Linux-PAM Manual                            09/23/2011                         CAPABILITY.CONF(5)