freebsd man page for ulog_logout

ULOG_LOGIN(3)						   BSD Library Functions Manual 					     ULOG_LOGIN(3)

NAME
     ulog_login, ulog_login_pseudo, ulog_logout, ulog_logout_pseudo -- manage user login records

LIBRARY
     User Login Record Library (libulog, -lulog)

SYNOPSIS
     #include <ulog.h>

     void
     ulog_login(const char *line, const char *user, const char *host);

     void
     ulog_login_pseudo(int fd, const char *host);

     void
     ulog_logout(const char *line);

     void
     ulog_logout_pseudo(int fd);

DESCRIPTION
     The ulog_login() and ulog_login_pseudo() functions register a login session on a TTY.  The ulog_login() function adds an entry for TTY line
     and username user.  The ulog_login_pseudo() function uses file descriptor to a pseudo-terminal master device fd to determine the TTY name,
     while using the username belonging to the real user ID of the calling process.  The optional host argument denotes a remote hostname, in case
     the login session is provided by a network service.

     The ulog_logout() and ulog_logout_pseudo() functions mark the previously registered login session as being terminated.

     Because the line and user arguments of ulog_login() and ulog_logout() cannot be trusted, these functions require administrative privileges.
     The ulog_login_pseudo() and ulog_logout_pseudo() functions spawn a privileged process to perform the actual logging.

SEE ALSO
     getuid(2), posix_openpt(2), ptsname(3), pututxline(3)

HISTORY
     These functions appeared in FreeBSD 9.0.

BSD
								 October 11, 2010							       BSD