updwtmp

UPDWTMP(3)		  Linux Programmer’s Manual		   UPDWTMP(3)



NAME
       updwtmp, logwtmp - append an entry to the wtmp file

SYNOPSIS
       #include <utmp.h>

       void updwtmp(const char *wtmp_file, const struct utmp *ut);
       void logwtmp(const char *line, const char *name, const char *host);

DESCRIPTION
       updwtmp() appends the utmp structure ut to the wtmp file.

       logwtmp() constructs an utmp structure using line, name, host, current
       time and current process id.  Then it calls updwtmp()  to  append  the
       structure to the utmp file.

AVAILABILITY
       Both  functions are available under glibc2, but not under libc5.	 How-
       ever, logwtmp used to occur in the old libbsd. These days, the logwtmp
       function	 is  included in libutil. (Hence you’ll need to add -lutil to
       your compiler commandline to get it.)

FILES
       /var/log/wtmp
	      database of past user logins

SEE ALSO
       wtmp(5)



GNU				  2003-07-18			   UPDWTMP(3)