From a3e03be058a9b9a2caf36c5b18f66c0fc3df3bf0 Mon Sep 17 00:00:00 2001 From: Eric Andersen Date: Tue, 8 May 2001 19:58:20 +0000 Subject: Add in libutil, based on Cory Visi's variant of Michael Shmulevich's libutil port. I have reworked the code quite a bit so that the stuff that is supposed to be in libc is in libc, and I added a bunch of missing stuff so the libutil interface matches that of glibc's libutil. The only caveat is that libutil/login.c is currently a stub. -Erik --- libutil/logwtmp.c | 73 +++++++++++++++++++++++++++++++++++++++++++++++++++++++ 1 file changed, 73 insertions(+) create mode 100644 libutil/logwtmp.c (limited to 'libutil/logwtmp.c') diff --git a/libutil/logwtmp.c b/libutil/logwtmp.c new file mode 100644 index 000000000..d8ee3da05 --- /dev/null +++ b/libutil/logwtmp.c @@ -0,0 +1,73 @@ +/* Copyright (C) 1996, 1997 Free Software Foundation, Inc. + This file is part of the GNU C Library. + Contributed by Ulrich Drepper , 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. */ + +#include +#include +#include +#include +#include +#include + + +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 + +#if _HAVE_UT_TV - 0 + __gettimeofday (&ut.ut_tv, NULL); +#else + time (&ut.ut_time); +#endif + +/* updwtmp (_PATH_WTMP, &ut); */ +/* from tinylogin */ + + 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); + } + + +} -- cgit v1.2.3