christos
parent
5a6c78298f
commit
c897d730b5
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@ -1,9 +1,11 @@
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# $NetBSD: Makefile,v 1.3 1994/11/17 07:17:53 jtc Exp $
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# $NetBSD: Makefile,v 1.4 1997/06/29 18:28:18 christos Exp $
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# @(#)Makefile 8.1 (Berkeley) 6/6/93
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CFLAGS+=-Wall -Wstrict-prototypes -Wmissing-prototypes
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PROG= wall
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SRCS= ttymsg.c wall.c
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BINGRP= tty
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BINMODE=2555
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DPADD+=${LIBUTIL}
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LDADD+=-lutil
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.include <bsd.prog.mk>
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@ -1,169 +0,0 @@
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/* $NetBSD: ttymsg.c,v 1.4 1997/02/11 08:42:03 mrg Exp $ */
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/*
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* Copyright (c) 1989, 1993
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* The Regents of the University of California. All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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* 3. All advertising materials mentioning features or use of this software
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* must display the following acknowledgement:
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* This product includes software developed by the University of
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* California, Berkeley and its contributors.
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* 4. Neither the name of the University nor the names of its contributors
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* may be used to endorse or promote products derived from this software
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* without specific prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
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* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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* ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
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* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
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* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
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* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
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* SUCH DAMAGE.
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*/
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#ifndef lint
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#if 0
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static char sccsid[] = "@(#)ttymsg.c 8.2 (Berkeley) 11/16/93";
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#endif
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static char rcsid[] = "$NetBSD: ttymsg.c,v 1.4 1997/02/11 08:42:03 mrg Exp $";
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#endif /* not lint */
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#include <sys/types.h>
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#include <sys/uio.h>
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#include <signal.h>
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#include <fcntl.h>
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#include <dirent.h>
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#include <errno.h>
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#include <paths.h>
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#include <unistd.h>
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#include <stdio.h>
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#include <string.h>
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#include <stdlib.h>
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/*
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* Display the contents of a uio structure on a terminal. Used by wall(1),
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* syslogd(8), and talkd(8). Forks and finishes in child if write would block,
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* waiting up to tmout seconds. Returns pointer to error string on unexpected
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* error; string is not newline-terminated. Various "normal" errors are
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* ignored (exclusive-use, lack of permission, etc.).
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*/
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char *
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ttymsg(iov, iovcnt, line, tmout)
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struct iovec *iov;
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int iovcnt;
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char *line;
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int tmout;
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{
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static char device[MAXNAMLEN] = _PATH_DEV;
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static char errbuf[1024];
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register int cnt, fd, left, wret;
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struct iovec localiov[6];
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int forked = 0;
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if (iovcnt > sizeof(localiov) / sizeof(localiov[0]))
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return ("too many iov's (change code in wall/ttymsg.c)");
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(void)strncpy(device + sizeof(_PATH_DEV) - 1, line,
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sizeof(device) - sizeof(_PATH_DEV));
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if (strchr(device + sizeof(_PATH_DEV) - 1, '/')) {
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/* A slash is an attempt to break security... */
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(void) snprintf(errbuf, sizeof(errbuf), "'/' in \"%s\"",
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device);
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return (errbuf);
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}
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/*
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* open will fail on slip lines or exclusive-use lines
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* if not running as root; not an error.
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*/
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if ((fd = open(device, O_WRONLY|O_NONBLOCK, 0)) < 0) {
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if (errno == EBUSY || errno == EACCES)
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return (NULL);
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(void) snprintf(errbuf, sizeof(errbuf),
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"%s: %s", device, strerror(errno));
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return (errbuf);
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}
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for (cnt = left = 0; cnt < iovcnt; ++cnt)
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left += iov[cnt].iov_len;
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for (;;) {
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wret = writev(fd, iov, iovcnt);
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if (wret >= left)
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break;
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if (wret >= 0) {
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left -= wret;
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if (iov != localiov) {
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bcopy(iov, localiov,
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iovcnt * sizeof(struct iovec));
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iov = localiov;
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}
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for (cnt = 0; wret >= iov->iov_len; ++cnt) {
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wret -= iov->iov_len;
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++iov;
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--iovcnt;
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}
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if (wret) {
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iov->iov_base += wret;
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iov->iov_len -= wret;
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}
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continue;
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}
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if (errno == EWOULDBLOCK) {
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int cpid, off = 0;
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if (forked) {
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(void) close(fd);
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_exit(1);
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}
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cpid = fork();
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if (cpid < 0) {
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(void) snprintf(errbuf, sizeof(errbuf),
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"fork: %s", strerror(errno));
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(void) close(fd);
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return (errbuf);
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}
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if (cpid) { /* parent */
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(void) close(fd);
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return (NULL);
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}
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forked++;
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/* wait at most tmout seconds */
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(void) signal(SIGALRM, SIG_DFL);
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(void) signal(SIGTERM, SIG_DFL); /* XXX */
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(void) sigsetmask(0);
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(void) alarm((u_int)tmout);
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(void) fcntl(fd, O_NONBLOCK, &off);
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continue;
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}
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/*
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* We get ENODEV on a slip line if we're running as root,
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* and EIO if the line just went away.
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*/
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if (errno == ENODEV || errno == EIO)
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break;
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(void) close(fd);
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if (forked)
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_exit(1);
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(void) snprintf(errbuf, sizeof(errbuf),
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"%s: %s", device, strerror(errno));
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return (errbuf);
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}
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(void) close(fd);
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if (forked)
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_exit(0);
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return (NULL);
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}
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@ -1,4 +1,4 @@
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/* $NetBSD: wall.c,v 1.7 1997/02/11 08:42:04 mrg Exp $ */
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/* $NetBSD: wall.c,v 1.8 1997/06/29 18:28:20 christos Exp $ */
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/*
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* Copyright (c) 1988, 1990, 1993
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@ -33,17 +33,17 @@
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* SUCH DAMAGE.
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*/
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#include <sys/cdefs.h>
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#ifndef lint
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static char copyright[] =
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"@(#) Copyright (c) 1988, 1990, 1993\n\
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The Regents of the University of California. All rights reserved.\n";
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__COPYRIGHT("@(#) Copyright (c) 1988, 1990, 1993\n\
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The Regents of the University of California. All rights reserved.\n");
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#endif /* not lint */
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#ifndef lint
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#if 0
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static char sccsid[] = "@(#)wall.c 8.2 (Berkeley) 11/16/93";
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#endif
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static char rcsid[] = "$NetBSD: wall.c,v 1.7 1997/02/11 08:42:04 mrg Exp $";
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__RCSID("$NetBSD: wall.c,v 1.8 1997/06/29 18:28:20 christos Exp $");
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#endif /* not lint */
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/*
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#include <string.h>
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#include <unistd.h>
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#include <utmp.h>
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#include <util.h>
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void makemsg __P((char *));
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int main __P((int, char *[]));
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#define IGNOREUSER "sleeper"
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@ -83,7 +85,7 @@ main(argc, argv)
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struct iovec iov;
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struct utmp utmp;
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FILE *fp;
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char *p, *ttymsg();
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char *p;
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struct passwd *pep = getpwnam("nobody");
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char line[sizeof(utmp.ut_line) + 1];
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struct tm *lt;
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struct passwd *pw;
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struct stat sbuf;
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time_t now, time();
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time_t now;
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FILE *fp;
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int fd;
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char *p, *whom, hostname[MAXHOSTNAMELEN], lbuf[100], tmpname[15];
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Reference in New Issue