diff options
author | markm <markm@FreeBSD.org> | 2001-12-20 13:40:48 +0000 |
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committer | markm <markm@FreeBSD.org> | 2001-12-20 13:40:48 +0000 |
commit | 3551cbb12e15475b2d7b2e33119ddd9e4f857531 (patch) | |
tree | 98b977ae16a00e75da37c528c4d43a120b0fe08e /usr.bin/tip | |
parent | 1bca9f318e10aa63a03881da3da814190f2fa072 (diff) | |
download | FreeBSD-src-3551cbb12e15475b2d7b2e33119ddd9e4f857531.zip FreeBSD-src-3551cbb12e15475b2d7b2e33119ddd9e4f857531.tar.gz |
Bring files back from the dead prior to remote commit to fix import
conflicts.
Diffstat (limited to 'usr.bin/tip')
-rw-r--r-- | usr.bin/tip/Makefile.inc | 6 | ||||
-rw-r--r-- | usr.bin/tip/tip/uucplock.c | 148 |
2 files changed, 154 insertions, 0 deletions
diff --git a/usr.bin/tip/Makefile.inc b/usr.bin/tip/Makefile.inc new file mode 100644 index 0000000..3eb8d69 --- /dev/null +++ b/usr.bin/tip/Makefile.inc @@ -0,0 +1,6 @@ +# These are mostly just for tip, but they're more visible up here. +# $FreeBSD$ +BINDIR?= /usr/bin +BINOWN?= uucp +BINGRP?= dialer +BINMODE?= 4510 diff --git a/usr.bin/tip/tip/uucplock.c b/usr.bin/tip/tip/uucplock.c new file mode 100644 index 0000000..858ed01 --- /dev/null +++ b/usr.bin/tip/tip/uucplock.c @@ -0,0 +1,148 @@ +/* + * Copyright (c) 1988, 1993 + * The Regents of the University of California. All rights reserved. + * + * Redistribution and use in source and binary forms, with or without + * modification, are permitted provided that the following conditions + * are met: + * 1. Redistributions of source code must retain the above copyright + * notice, this list of conditions and the following disclaimer. + * 2. Redistributions in binary form must reproduce the above copyright + * notice, this list of conditions and the following disclaimer in the + * documentation and/or other materials provided with the distribution. + * 3. All advertising materials mentioning features or use of this software + * must display the following acknowledgement: + * This product includes software developed by the University of + * California, Berkeley and its contributors. + * 4. Neither the name of the University nor the names of its contributors + * may be used to endorse or promote products derived from this software + * without specific prior written permission. + * + * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND + * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE + * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE + * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE + * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL + * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS + * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) + * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT + * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY + * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF + * SUCH DAMAGE. + * + * $FreeBSD$ + */ + +#ifndef lint +static char sccsid[] = "@(#)uucplock.c 8.1 (Berkeley) 6/6/93"; +#endif /* not lint */ + +#include <sys/types.h> +#include <sys/file.h> +#include <sys/dir.h> +#include <errno.h> + +#include "tipconf.h" +#include "pathnames.h" + +/* Forward declarations */ +static int put_pid (int fd, int pid); +static int get_pid (int fd); + +/* + * uucp style locking routines + * return: 0 - success + * -1 - failure + */ + +uu_lock (char *ttyname) +{ + int fd, pid; + char tbuf[sizeof(_PATH_LOCKDIRNAME) + MAXNAMLEN]; + off_t lseek(); + + (void)sprintf(tbuf, _PATH_LOCKDIRNAME, ttyname); + fd = open(tbuf, O_RDWR|O_CREAT|O_EXCL, 0660); + if (fd < 0) { + /* + * file is already locked + * check to see if the process holding the lock still exists + */ + fd = open(tbuf, O_RDWR, 0); + if (fd < 0) { + perror("lock open"); + return(-1); + } + if ((pid = get_pid (fd)) == -1) { + (void)close(fd); + perror("lock read"); + return(-1); + } + + if (kill(pid, 0) == 0 || errno != ESRCH) { + (void)close(fd); /* process is still running */ + return(-1); + } + /* + * The process that locked the file isn't running, so + * we'll lock it ourselves + */ + if (lseek(fd, 0L, L_SET) < 0) { + (void)close(fd); + perror("lock lseek"); + return(-1); + } + /* fall out and finish the locking process */ + } + pid = getpid(); + if (!put_pid (fd, pid)) { + (void)close(fd); + (void)unlink(tbuf); + perror("lock write"); + return(-1); + } + (void)close(fd); + return(0); +} + +uu_unlock (char *ttyname) +{ + char tbuf[sizeof(_PATH_LOCKDIRNAME) + MAXNAMLEN]; + + (void)sprintf(tbuf, _PATH_LOCKDIRNAME, ttyname); + return(unlink(tbuf)); +} + +static int put_pid (int fd, int pid) +{ +#if HAVE_V2_LOCKFILES + return write (fd, (char *)&pid, sizeof (pid)) == sizeof (pid); +#else + char buf [32]; + int len; + len = sprintf (buf, "%10ld\n", (long) pid); + return write (fd, buf, len) == len; +#endif +} + +static int get_pid (int fd) +{ + int bytes_read, pid; +#if HAVE_V2_LOCKFILES + bytes_read = read (fd, &pid, sizeof (pid)); + if (bytes_read != sizeof (pid)) + pid = -1; +#else + char buf [32]; + bytes_read = read (fd, buf, sizeof (buf) - 1); + if (bytes_read > 0) { + buf [bytes_read] = '\0'; + pid = strtol (buf, (char **) NULL, 10); + } + else + pid = -1; +#endif + return pid; +} + +/* end of uucplock.c */ |