LOGIN(3) | Library Functions Manual | LOGIN(3) |
login
, logout
,
logwtmp
— login utility
functions (DEPRECATED)
#include
<util.h>
void
login
(struct
utmp *ut);
int
logout
(const
char *line);
void
logwtmp
(const
char *line, const char
*name, const char
*host);
The
login
(),
logout
(), and logwtmp
()
functions are
DEPRECATED;
use pututxline(3) instead.
These functions operate on the database of current users in /var/run/utmpx and the system log file. Superuser permission is required.
The
login
()
function updates the /var/run/utmpx files with user
information contained in ut (after converting to a
struct utmpx, as described in pututxline(3)).
The
logout
()
function removes the entry from /var/run/utmpx
corresponding to the device line.
The
logwtmp
()
function adds an entry to the system log file. Since
login
() will add the appropriate entry 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/utmpx. However, there is no error
indication due to lack of permissions.
December 14, 1995 | Mac OS X 12 |