/* wtmp support rubbish (i.e. complete crap) * * Written by Erik Andersen <andersee@debian.org> * * This library is free software; you can redistribute it and/or * modify it under the terms of the GNU Library General Public License as * published by the Free Software Foundation; either version 2 of the * License, or (at your option) any later version. * * This library is distributed in the hope that it will be useful, * but WITHOUT ANY WARRANTY; without even the implied warranty of * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU * Library General Public License for more details. * * You should have received a copy of the GNU Library General Public * License along with this library; see the file COPYING.LIB. If not, * write to the Free Software Foundation, Inc., 675 Mass Ave, * Cambridge, MA 02139, USA. */ #include <string.h> #include <sys/time.h> #include <time.h> #include <unistd.h> #include <utmp.h> #include <fcntl.h> #include <sys/file.h> void logwtmp (const char *line, const char *name, const char *host) { struct utmp lutmp; memset (&(lutmp), 0, sizeof (struct utmp)); lutmp.ut_type = (name && *name)? USER_PROCESS : DEAD_PROCESS; lutmp.ut_pid = getpid(); strncpy(lutmp.ut_line, line, sizeof(lutmp.ut_line)-1); strncpy(lutmp.ut_name, name, sizeof(lutmp.ut_name)-1); strncpy(lutmp.ut_host, host, sizeof(lutmp.ut_host)-1); gettimeofday(&(lutmp.ut_tv), NULL); updwtmp(_PATH_WTMP, &(lutmp)); } #if 0 /* This is enabled in uClibc/libc/misc/utmp/wtent.c */ extern void updwtmp(const char *wtmp_file, const struct utmp *lutmp) { int fd; fd = open(wtmp_file, O_APPEND | O_WRONLY, 0); if (fd >= 0) { if (lockf(fd, F_LOCK, 0)==0) { write(fd, (const char *) lutmp, sizeof(struct utmp)); lockf(fd, F_ULOCK, 0); close(fd); } } } #endif