/* vi: set sw=4 ts=4: */ /* * wtmp support rubbish (i.e. complete crap) * Copyright (C) 2000-2006 by Erik Andersen <andersen@uclibc.org> * Licensed under the LGPL v2.1, see the file COPYING.LIB in this tarball. */ #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(lutmp)); 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); #if !defined __WORDSIZE_COMPAT32 || __WORDSIZE_COMPAT32 == 0 gettimeofday(&lutmp.ut_tv, NULL); #else { struct timeval tv; gettimeofday(&tv, NULL); lutmp.ut_tv.tv_sec = tv.tv_sec; lutmp.ut_tv.tv_usec = tv.tv_usec; } #endif updwtmp(_PATH_WTMP, &lutmp); } #if 0 /* This is enabled in uClibc/libc/misc/utmp/wtent.c */ void updwtmp(const char *wtmp_file, const struct utmp *lutmp) { int fd; fd = open(wtmp_file, O_APPEND | O_WRONLY); if (fd >= 0) { if (lockf(fd, F_LOCK, 0) == 0) { write(fd, lutmp, sizeof(*lutmp)); lockf(fd, F_ULOCK, 0); close(fd); } } } #endif