diff options
Diffstat (limited to 'libutil/logwtmp.c')
| -rw-r--r-- | libutil/logwtmp.c | 102 |
1 files changed, 44 insertions, 58 deletions
diff --git a/libutil/logwtmp.c b/libutil/logwtmp.c index 6a8f6bd14..35d809d96 100644 --- a/libutil/logwtmp.c +++ b/libutil/logwtmp.c @@ -1,73 +1,59 @@ -/* Copyright (C) 1996, 1997 Free Software Foundation, Inc. - This file is part of the GNU C Library. - Contributed by Ulrich Drepper <drepper@cygnus.com>, 1996. - - The GNU C 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. - - The GNU C 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 the GNU C Library; see the file COPYING.LIB. If not, - write to the Free Software Foundation, Inc., 59 Temple Place - Suite 330, - Boston, MA 02111-1307, USA. */ +/* 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 <fcntl.h> #include <utmp.h> +#include <fcntl.h> +#include <sys/file.h> void logwtmp (const char *line, const char *name, const char *host) { - struct utmp ut; - struct flock lock; - int ut_fd; - - - /* Set information in new entry. */ - memset (&ut, 0, sizeof (ut)); -#if _HAVE_UT_PID - 0 - ut.ut_pid = getpid (); -#endif -#if _HAVE_UT_TYPE - 0 - ut.ut_type = name[0] ? USER_PROCESS : DEAD_PROCESS; -#endif - strncpy (ut.ut_line, line, sizeof ut.ut_line); - strncpy (ut.ut_name, name, sizeof ut.ut_name); -#if _HAVE_UT_HOST - 0 - strncpy (ut.ut_host, host, sizeof ut.ut_host); -#endif + struct utmp lutmp; + memset (&(lutmp), 0, sizeof (struct utmp)); -#if _HAVE_UT_TV - 0 - gettimeofday (&ut.ut_tv, NULL); -#else - time (&ut.ut_time); -#endif + 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, &ut); */ -/* from tinylogin */ + updwtmp(_PATH_WTMP, &(lutmp)); +} - if ((ut_fd = open(_PATH_WTMP, O_APPEND | O_WRONLY)) >= 0) { - /* Lock the utmp file before updating */ - lock.l_type = F_WRLCK; - lock.l_whence = SEEK_SET; - lock.l_start = 0; - lock.l_len = 0; - if (fcntl(ut_fd, F_SETLK, &lock) >= 0) { - write(ut_fd, (void *) &ut, sizeof(ut)); - /* Now unlock the utmp file */ - lock.l_type = F_UNLCK; - } - close(ut_fd); +#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 |