diff options
Diffstat (limited to 'shell_cmds/tee/tee.c')
| -rw-r--r-- | shell_cmds/tee/tee.c | 156 |
1 files changed, 156 insertions, 0 deletions
diff --git a/shell_cmds/tee/tee.c b/shell_cmds/tee/tee.c new file mode 100644 index 0000000..e916d90 --- /dev/null +++ b/shell_cmds/tee/tee.c @@ -0,0 +1,156 @@ +/* $NetBSD: tee.c,v 1.6 1997/10/20 00:37:11 lukem Exp $ */ + +/* + * 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. + */ + +#include <sys/cdefs.h> +#ifndef lint +__COPYRIGHT("@(#) Copyright (c) 1988, 1993\n\ + The Regents of the University of California. All rights reserved.\n"); +#endif /* not lint */ + +#ifndef lint +#if 0 +static char sccsid[] = "@(#)tee.c 8.1 (Berkeley) 6/6/93"; +#endif +__RCSID("$NetBSD: tee.c,v 1.6 1997/10/20 00:37:11 lukem Exp $"); +#endif + +#include <sys/types.h> +#include <sys/stat.h> +#include <signal.h> +#include <errno.h> +#include <fcntl.h> +#include <unistd.h> +#include <stdio.h> +#include <stdlib.h> +#include <string.h> +#include <locale.h> +#include <err.h> + +typedef struct _list { + struct _list *next; + int fd; + char *name; +} LIST; +LIST *head; + +void add __P((int, char *)); +int main __P((int, char **)); + +int +main(argc, argv) + int argc; + char *argv[]; +{ + LIST *p; + int n, fd, rval, wval; + char *bp; + int append, ch, exitval; + char *buf; +#define BSIZE (8 * 1024) + + setlocale(LC_ALL, ""); + + append = 0; + while ((ch = getopt(argc, argv, "ai")) != -1) + switch((char)ch) { + case 'a': + append = 1; + break; + case 'i': + (void)signal(SIGINT, SIG_IGN); + break; + case '?': + default: + (void)fprintf(stderr, "usage: tee [-ai] [file ...]\n"); + exit(1); + } + argv += optind; + argc -= optind; + + if ((buf = malloc((size_t)BSIZE)) == NULL) + err(1, "malloc"); + + add(STDOUT_FILENO, "stdout"); + + for (exitval = 0; *argv; ++argv) + if ((fd = open(*argv, append ? O_WRONLY|O_CREAT|O_APPEND : + O_WRONLY|O_CREAT|O_TRUNC, DEFFILEMODE)) < 0) { + warn("%s", *argv); + exitval = 1; + } else + add(fd, *argv); + + while ((rval = read(STDIN_FILENO, buf, BSIZE)) > 0) + for (p = head; p; p = p->next) { + n = rval; + bp = buf; + do { + if ((wval = write(p->fd, bp, n)) == -1) { + warn("%s", p->name); + exitval = 1; + break; + } + bp += wval; + } while (n -= wval); + } + if (rval < 0) { + warn("read"); + exitval = 1; + } + + for (p = head; p; p = p->next) { + if (close(p->fd) == -1) { + warn("%s", p->name); + exitval = 1; + } + } + + exit(exitval); +} + +void +add(fd, name) + int fd; + char *name; +{ + LIST *p; + + if ((p = malloc((size_t)sizeof(LIST))) == NULL) + err(1, "malloc"); + p->fd = fd; + p->name = name; + p->next = head; + head = p; +} |