updwtmp, logwtmp − append an entry to the wtmp file
System utilities library (libutil, −lutil)
#include <utmp.h>
void
updwtmp(const char *wtmp_file, const struct
utmp *ut);
void logwtmp(const char *line, const char
*name, const char
*host);
updwtmp() appends the utmp structure ut to the wtmp file.
logwtmp() constructs a utmp structure using line, name, host, current time, and current process ID. Then it calls updwtmp() to append the structure to the wtmp file.
/var/log/wtmp
database of past user logins
For an explanation of the terms used in this section, see attributes(7). |
For consistency with the other "utmpx" functions (see getutxent(3)), glibc provides (since glibc 2.1):
#define
_GNU_SOURCE /* See feature_test_macros(7) */
#include <utmpx.h>
void updwtmpx (const char *wtmpx_file, const
struct utmpx *utx);
This function performs the same task as updwtmp(), but differs in that it takes a utmpx structure as its last argument.
None.
Solaris, NetBSD.
getutxent(3), wtmp(5)