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NAME | SYNOPSIS | DESCRIPTION | OPTIONS | MODULE TYPES PROVIDED | RETURN VALUES | EXAMPLES | SEE ALSO | AUTHOR | NOTES | COLOPHON |
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PAM_KEYINIT(8) Linux-PAM Manual PAM_KEYINIT(8)
pam_keyinit - Kernel session keyring initialiser module
pam_keyinit.so [debug] [force] [revoke]
The pam_keyinit PAM module ensures that the invoking process has
a session keyring other than the user default session keyring.
The session component of the module checks to see if the
process's session keyring is the user default, and, if it is,
creates a new anonymous session keyring with which to replace it.
If a new session keyring is created, it will install a link to
the user common keyring in the session keyring so that keys
common to the user will be automatically accessible through it.
The session keyring of the invoking process will thenceforth be
inherited by all its children unless they override it.
This module is intended primarily for use by login processes. Be
aware that after the session keyring has been replaced, the old
session keyring and the keys it contains will no longer be
accessible.
This module should not, generally, be invoked by programs like
su, since it is usually desirable for the key set to percolate
through to the alternate context. The keys have their own
permissions system to manage this.
This module should be included as early as possible in a PAM
configuration, so that other PAM modules can attach tokens to the
keyring.
The keyutils package is used to manipulate keys more directly.
This can be obtained from:
Keyutils[1]
debug
Log debug information with syslog(3).
force
Causes the session keyring of the invoking process to be
replaced unconditionally.
revoke
Causes the session keyring of the invoking process to be
revoked when the invoking process exits if the session
keyring was created for this process in the first place.
Only the session module type is provided.
PAM_SUCCESS
This module will usually return this value
PAM_AUTH_ERR
Authentication failure.
PAM_BUF_ERR
Memory buffer error.
PAM_IGNORE
The return value should be ignored by PAM dispatch.
PAM_SERVICE_ERR
Cannot determine the user name.
PAM_SESSION_ERR
This module will return this value if its arguments are
invalid or if a system error such as ENOMEM occurs.
PAM_USER_UNKNOWN
User not known.
Add this line to your login entries to start each login session
with its own session keyring:
session required pam_keyinit.so
This will prevent keys from one session leaking into another
session for the same user.
pam.conf(5), pam.d(5), pam(8)keyctl(1)
pam_keyinit was written by David Howells, <dhowells@redhat.com>.
1. Keyutils
http://people.redhat.com/~dhowells/keyutils/
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 2020-12-18. If you
discover any rendering problems in this HTML version of the page,
or you believe 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_KEYINIT(8)
Pages that refer to this page: keyrings(7), keyutils(7), session-keyring(7), user-keyring(7), user-session-keyring(7)
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