UTEMPTER(3) BSD Library Functions Manual UTEMPTER(3)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);
DESCRIPTIONutempter_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 speci‐
fied 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 ALSOpututline(3), sigaction(3), updwtmp(3).
HISTORY
These functions appeared in ALT Linux Sisyphus in October 2001.
ALT Linux November 4, 2010 ALT Linux
