locking is done differently now

1 files changed, 0 insertions, 198 deletions

diff --git a/usr.bin/mail/dotlock.c b/usr.bin/mail/dotlock.c
deleted file mode 100644
index ee6284c6c36..00000000000
--- a/usr.bin/mail/dotlock.c
+++ /dev/null
@@ -1,198 +0,0 @@
-/*	$OpenBSD: dotlock.c,v 1.3 1997/07/13 23:53:59 millert Exp $	*/
-/*	$NetBSD: dotlock.c,v 1.1 1996/06/08 19:48:19 christos Exp $	*/
-
-/*
- * Copyright (c) 1996 Christos Zoulas.  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 Christos Zoulas.
- * 4. The name of the author may not be used to endorse or promote products
- *    derived from this software without specific prior written permission.
- *
- * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``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 AUTHOR 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.
- */
-
-#ifndef lint
-static char rcsid[] = "$OpenBSD: dotlock.c,v 1.3 1997/07/13 23:53:59 millert Exp $";
-#endif
-
-#include <sys/types.h>
-#include <sys/param.h>
-#include <sys/stat.h>
-#include <sys/time.h>
-
-#include <stdio.h>
-#include <string.h>
-#include <fcntl.h>
-#include <stdlib.h>
-#include <unistd.h>
-#include <errno.h>
-#include <signal.h>
-
-#include "extern.h"
-
-#ifndef O_SYNC
-#define O_SYNC	0
-#endif
-
-static int create_exclusive __P((const char *));
-/*
- * Create a unique file. O_EXCL does not really work over NFS so we follow
- * the following trick: [Inspired by  S.R. van den Berg]
- *
- * - make a mostly unique filename and try to create it.
- * - link the unique filename to our target
- * - get the link count of the target
- * - unlink the mostly unique filename
- * - if the link count was 2, then we are ok; else we've failed.
- */
-static int
-create_exclusive(fname)
-	const char *fname;
-{
-	char path[MAXPATHLEN], hostname[MAXHOSTNAMELEN];
-	const char *ptr;
-	struct timeval tv;
-	pid_t pid;
-	size_t ntries, cookie;
-	int fd, serrno;
-	struct stat st;
-
-	(void)gettimeofday(&tv, NULL);
-	(void)gethostname(hostname, MAXHOSTNAMELEN);
-	pid = getpid();
-
-	cookie = pid ^ tv.tv_usec;
-
-	/*
-	 * We generate a semi-unique filename, from hostname.(pid ^ usec)
-	 */
-	if ((ptr = strrchr(fname, '/')) == NULL)
-		ptr = fname;
-	else
-		ptr++;
-
-	(void)snprintf(path, sizeof(path), "%.*s.%s.%x",
-	    ptr - fname, fname, hostname, cookie);
-
-	/*
-	 * We try to create the unique filename.
-	 */
-	for (ntries = 0; ntries < 5; ntries++) {
-		fd = open(path, O_WRONLY|O_CREAT|O_TRUNC|O_EXCL|O_SYNC, 0);
-		if (fd != -1) {
-			(void)close(fd);
-			break;
-		}
-		else if (errno == EEXIST)
-			continue;
-		else
-			return(-1);
-	}
-
-	/*
-	 * We link the path to the name
-	 */
-	if (link(path, fname) == -1)
-		goto bad;
-
-	/*
-	 * Note that we stat our own exclusively created name, not the
-	 * destination, since the destination can be affected by others.
-	 */
-	if (stat(path, &st) == -1)
-		goto bad;
-
-	(void)unlink(path);
-
-	/*
-	 * If the number of links was two (one for the unique file and one
-	 * for the lock), we've won the race
-	 */
-	if (st.st_nlink != 2) {
-		errno = EEXIST;
-		return(-1);
-	}
-	return(0);
-
-bad:
-	serrno = errno;
-	(void)unlink(path);
-	errno = serrno;
-	return(-1);
-}
-
-int
-dot_lock(fname, pollinterval, fp, msg)
-	const char *fname;	/* Pathname to lock */
-	int pollinterval;	/* Interval to check for lock, -1 return */
-	FILE *fp;		/* File to print message */
-	const char *msg;	/* Message to print */
-{
-	char path[MAXPATHLEN];
-	sigset_t nset, oset;
-
-	sigemptyset(&nset);
-	sigaddset(&nset, SIGHUP);
-	sigaddset(&nset, SIGINT);
-	sigaddset(&nset, SIGQUIT);
-	sigaddset(&nset, SIGTERM);
-	sigaddset(&nset, SIGTTIN);
-	sigaddset(&nset, SIGTTOU);
-	sigaddset(&nset, SIGTSTP);
-	sigaddset(&nset, SIGCHLD);
-
-	(void)snprintf(path, sizeof(path), "%s.lock", fname);
-
-	for (;;) {
-		(void)sigprocmask(SIG_BLOCK, &nset, &oset);
-		if (create_exclusive(path) != -1) {
-			(void)sigprocmask(SIG_SETMASK, &oset, NULL);
-			return(0);
-		}
-		else
-			(void)sigprocmask(SIG_SETMASK, &oset, NULL);
-
-		if (errno != EEXIST)
-			return(-1);
-
-		if (fp && msg)
-		    (void)fputs(msg, fp);
-
-		if (pollinterval) {
-			if (pollinterval == -1) {
-				errno = EEXIST;
-				return(-1);
-			}
-			sleep(pollinterval);
-		}
-	}
-}
-
-void
-dot_unlock(fname)
-	const char *fname;
-{
-	char path[MAXPATHLEN];
-
-	(void)snprintf(path, sizeof(path), "%s.lock", fname);
-	(void)unlink(path);
-}