135673Sbostic /*
2*61427Sbostic * Copyright (c) 1988, 1993
3*61427Sbostic * The Regents of the University of California. All rights reserved.
435673Sbostic *
542667Sbostic * %sccs.include.redist.c%
635673Sbostic *
735673Sbostic */
835673Sbostic
935673Sbostic #ifndef lint
10*61427Sbostic static char sccsid[] = "@(#)logwtmp.c 8.1 (Berkeley) 06/04/93";
1135673Sbostic #endif /* not lint */
1235673Sbostic
1335673Sbostic #include <sys/types.h>
1435673Sbostic #include <sys/time.h>
1535673Sbostic #include <sys/stat.h>
1654527Sandrew
1746669Sbostic #include <fcntl.h>
1835673Sbostic #include <utmp.h>
1946669Sbostic #include <unistd.h>
2054527Sandrew #include <stdio.h>
2146669Sbostic #include <string.h>
2254527Sandrew #include "extern.h"
2335673Sbostic
2436304Skarels static int fd = -1;
2535674Sbostic
2636304Skarels /*
2736304Skarels * Modified version of logwtmp that holds wtmp file open
2836304Skarels * after first call, for use with ftp (which may chroot
2936304Skarels * after login, but before logout).
3036304Skarels */
3154527Sandrew void
logwtmp(line,name,host)3235673Sbostic logwtmp(line, name, host)
3335673Sbostic char *line, *name, *host;
3435673Sbostic {
3535673Sbostic struct utmp ut;
3635673Sbostic struct stat buf;
3735673Sbostic
3837274Sbostic if (fd < 0 && (fd = open(_PATH_WTMP, O_WRONLY|O_APPEND, 0)) < 0)
3935673Sbostic return;
4036304Skarels if (fstat(fd, &buf) == 0) {
4135673Sbostic (void)strncpy(ut.ut_line, line, sizeof(ut.ut_line));
4235673Sbostic (void)strncpy(ut.ut_name, name, sizeof(ut.ut_name));
4335673Sbostic (void)strncpy(ut.ut_host, host, sizeof(ut.ut_host));
4435673Sbostic (void)time(&ut.ut_time);
4535673Sbostic if (write(fd, (char *)&ut, sizeof(struct utmp)) !=
4635673Sbostic sizeof(struct utmp))
4735673Sbostic (void)ftruncate(fd, buf.st_size);
4835673Sbostic }
4935673Sbostic }
50