NAME

     utempter_add_record, utempter_remove_added_record, utempter_remove_record,
     utempter_set_helper — utempter interface

SYNOPSIS

     #include <utempter.h>

     int
     utempter_add_record(int fd, const char *host);

     int
     utempter_remove_added_record(void);

     int
     utempter_remove_record(int fd);

     void
     utempter_set_helper(const char *pathname);

DESCRIPTION

     utempter_add_record() function adds a login record to the database for the TTY belonging to
     the pseudo-terminal master file descriptor fd, using the username corresponding with the
     real user ID of the calling process and the optional hostname host.  This function spawns a
     privileged process to perform the actual logging.

     utempter_remove_record() function marks the login session as being closed for the TTY
     belonging to the pseudo-terminal master file descriptor fd.  This function spawns a
     privileged process to perform the actual logging.

     utempter_remove_added_record() function has the same properties as the previously mentioned
     function, except that it uses an internally cached value of the file descriptor passed to
     the login functions.

     utempter_set_helper() function changes default helper path to the specified value.  The
     pointer passed to this function must remain valid all the time while utempter interface is
     in use.

RETURN VALUES

     On error, zero is returned.  On success, a non-zero value is returned.

NOTES

     During execution of the privileged process spawned by these functions, SIGCHLD signal
     handler will be temporarily set to the default action.

SEE ALSO

     pututline(3), sigaction(3), updwtmp(3).

HISTORY

     These functions appeared in ALT Linux Sisyphus in October 2001.