PAM_EXEC(8) Linux-PAM Manual PAM_EXEC(8)NAMEpam_exec - PAM module which calls an external command
SYNOPSIS
pam_exec.so [debug] [expose_authtok] [seteuid] [quiet] [log=file]
command [...]
DESCRIPTIONpam_exec is a PAM module that can be used to run an external command.
The child's environment is set to the current PAM environment list, as
returned by pam_getenvlist(3) In addition, the following PAM items are
exported as environment variables: PAM_RHOST, PAM_RUSER, PAM_SERVICE,
PAM_TTY, PAM_USER and PAM_TYPE, which contains one of the module types:
account, auth, password, open_session and close_session.
Commands called by pam_exec need to be aware of that the user can have
controll over the environment.
OPTIONS
debug Print debug information.
expose_authtok
During authentication the calling command can read the password
from stdin(3).
log=file
The output of the command is appended to file
quiet Per default pam_exec.so will echo the exit status of the
external command if it fails. Specifying this option will
suppress the message.
seteuid
Per default pam_exec.so will execute the external command with
the real user ID of the calling process. Specifying this option
means the command is run with the effective user ID.
MODULE SERVICES PROVIDED
The services auth, account, password and session are supported.
RETURN VALUES
PAM_SUCCESS
The external command runs successfull.
PAM_SERVICE_ERR
No argument or a wrong number of arguments were given.
PAM_SYSTEM_ERR
A system error occurred or the command to execute failed.
PAM_IGNORE
pam_setcred was called, which does not execute the command.
EXAMPLES
Add the following line to /etc/pam.d/passwd to rebuild the NIS database
after each local password change:
password optional pam_exec.so seteuid /usr/bin/make -C /var/yp
This will execute the command
make -C /var/yp
with effective user ID.
SEE ALSOpam.conf(5), pam.d(5), pam(8)AUTHORpam_exec was written by Thorsten Kukuk <kukuk@thkukuk.de>.
Linux-PAM Manual 01/09/2013 PAM_EXEC(8)
