diff options
Diffstat (limited to 'syslogd/ttymsg.c')
| -rw-r--r-- | syslogd/ttymsg.c | 154 |
1 files changed, 0 insertions, 154 deletions
diff --git a/syslogd/ttymsg.c b/syslogd/ttymsg.c deleted file mode 100644 index 71a3ca15d..000000000 --- a/syslogd/ttymsg.c +++ /dev/null @@ -1,154 +0,0 @@ -/* - * Copyright (c) 1989 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. - */ - -#ifndef lint -static char sccsid[] = "@(#)ttymsg.c 5.8 (Berkeley) 7/1/91"; -#endif /* not lint */ - -#include <sys/types.h> -#include <sys/uio.h> -#include <signal.h> -#include <fcntl.h> -#include <dirent.h> -#include <errno.h> -#include <paths.h> -#include <unistd.h> -#include <stdio.h> -#include <string.h> -#include <stdlib.h> - -/* - * Display the contents of a uio structure on a terminal. Used by wall(1) - * and syslogd(8). Forks and finishes in child if write would block, waiting - * at most five minutes. Returns pointer to error string on unexpected error; - * string is not newline-terminated. Various "normal" errors are ignored - * (exclusive-use, lack of permission, etc.). - */ -char * -ttymsg(iov, iovcnt, line) - struct iovec *iov; - int iovcnt; - char *line; -{ - static char device[MAXNAMLEN] = _PATH_DEV; - static char errbuf[1024]; - register int cnt, fd, left, wret; - struct iovec localiov[6]; - int forked = 0; - - if (iovcnt > 6) - return ("too many iov's (change code in wall/ttymsg.c)"); - /* - * open will fail on slip lines or exclusive-use lines - * if not running as root; not an error. - */ - (void) strcpy(device + sizeof(_PATH_DEV) - 1, line); - if ((fd = open(device, O_WRONLY|O_NONBLOCK, 0)) < 0) { - if (errno == EBUSY || errno == EACCES) - return (NULL); - (void) snprintf(errbuf, sizeof(errbuf), - "%s: %s", device, strerror(errno)); - return (errbuf); - } - - for (cnt = left = 0; cnt < iovcnt; ++cnt) - left += iov[cnt].iov_len; - - for (;;) { - wret = writev(fd, iov, iovcnt); - if (wret >= left) - break; - if (wret >= 0) { - left -= wret; - if (iov != localiov) { - bcopy(iov, localiov, - iovcnt * sizeof(struct iovec)); - iov = localiov; - } - for (cnt = 0; wret >= iov->iov_len; ++cnt) { - wret -= iov->iov_len; - ++iov; - --iovcnt; - } - if (wret) { - iov->iov_base += wret; - iov->iov_len -= wret; - } - continue; - } - if (errno == EWOULDBLOCK) { - int cpid, off = 0; - - if (forked) { - (void) close(fd); - _exit(1); - } - cpid = fork(); - if (cpid < 0) { - (void) snprintf(errbuf, sizeof(errbuf), - "fork: %s", strerror(errno)); - (void) close(fd); - return (errbuf); - } - if (cpid) { /* parent */ - (void) close(fd); - return (NULL); - } - forked++; - /* wait at most 5 minutes */ - (void) signal(SIGALRM, SIG_DFL); - (void) signal(SIGTERM, SIG_DFL); /* XXX */ - (void) sigsetmask(0); - (void) alarm((u_int)(60 * 5)); - (void) fcntl(fd, O_NONBLOCK, &off); - continue; - } - /* - * We get ENODEV on a slip line if we're running as root, - * and EIO if the line just went away. - */ - if (errno == ENODEV || errno == EIO) - break; - (void) close(fd); - if (forked) - _exit(1); - (void) snprintf(errbuf, sizeof(errbuf), - "%s: %s", device, strerror(errno)); - return (errbuf); - } - - (void) close(fd); - if (forked) - _exit(0); - return (NULL); -} |