LOGWTMP(3) BSD Library Functions Manual LOGWTMP(3)NAMElogwtmp — append a new record to the wtmp file
System Utilities Library (libutil, -lutil)
logwtmp(const char *line, const char *name, const char *host);
The function logwtmp() tries to append a new record to the wtmp(5) file,
using the provided arguments line, name, and host, and the current time.
If the length of the hostname string host is longer than what would fit
into the hostname field of the wtmp(5) file, it will first be attempted
to convert it into a numerical IP address using gethostbyname(3). Fail‐
ing this, the hostname will be recorded as "invalid hostname".
The calling process must have permission to write to the wtmp(5) file.
SEE ALSOgethostbyname(3), login(3), wtmp(5)BSD December 29, 1996 BSD