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LOGIN(3) Library Functions Manual LOGIN(3)

login, logout, logwtmplogin utility functions

#include <utmp.h>
#include <util.h>

login(struct utmp *ut);

logout(const char *line);

logwtmp(const char *line, const char *name, const char *host);

The (), logout(), and logwtmp() functions operate on the database of current users in /var/run/utmp and on the logfile /var/log/wtmp of logins and logouts.

The () function updates the /var/run/utmp and /var/log/wtmp files with user information contained in ut.

The () function removes the entry from /var/run/utmp corresponding to the device line.

The () function adds an entry to /var/log/wtmp. Since login() will add the appropriate entry for /var/log/wtmp during a login, logwtmp() is usually used for logouts.

logout() returns non-zero if it was able to find and delete an entry for line, and zero if there is no entry for line in /var/run/utmp.



June 5, 2013 OpenBSD-6.3