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PAM_SHELLS(8) Linux-PAM Manual PAM_SHELLS(8)

NAME

pam_shells - PAM module to check for valid login shell

SYNOPSIS

pam_shells.so

DESCRIPTION

pam_shells is a PAM module that only allows access to the system if the user's shell is listed in /etc/shells.

If this file does not exist, entries are taken from files /usr/etc/shells, /usr/etc/shells.d/* and /etc/shells.d/* in that order.

It also checks if needed files (e.g. /etc/shells) are plain files and not world writable.

OPTIONS

This module does not recognise any options.

MODULE TYPES PROVIDED

The auth and account module types are provided.

RETURN VALUES

PAM_AUTH_ERR

Access to the system was denied.

PAM_SUCCESS

The user's login shell was listed as valid shell in /etc/shells.

PAM_USER_UNKNOWN

The user does not exist or the user's login shell could not be determined.

PAM_SERVICE_ERR

The module was not able to get the name of the user.

EXAMPLES

auth  required  pam_shells.so

SEE ALSO

shells(5), pam.conf(5), pam.d(5), pam(8)

AUTHOR

pam_shells was written by Erik Troan <ewt@redhat.com>.

10/24/2024 Linux-PAM