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.