fifolog_writer.c revision 199411 
1/*-
2 * Copyright (c) 2005-2008 Poul-Henning Kamp
3 * All rights reserved.
4 *
5 * Redistribution and use in source and binary forms, with or without
6 * modification, are permitted provided that the following conditions
7 * are met:
8 * 1. Redistributions of source code must retain the above copyright
9 *    notice, this list of conditions and the following disclaimer.
10 * 2. Redistributions in binary form must reproduce the above copyright
11 *    notice, this list of conditions and the following disclaimer in the
12 *    documentation and/or other materials provided with the distribution.
13 *
14 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
15 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
16 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
17 * ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
18 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
19 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
20 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
21 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
22 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
23 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
24 * SUCH DAMAGE.
25 *
26 * $FreeBSD: head/usr.sbin/fifolog/fifolog_writer/fifolog_writer.c 199411 2009-11-17 17:38:41Z jh $
27 */
28
29#include <stdio.h>
30#include <stdlib.h>
31#include <sysexits.h>
32#include <err.h>
33#include <unistd.h>
34#include <ctype.h>
35#include <assert.h>
36#include <poll.h>
37#include <string.h>
38#include <zlib.h>
39
40#include "libfifolog.h"
41
42static void
43usage(void)
44{
45	fprintf(stderr, "Usage: fifolog_writer [-w write-rate] [-s sync-rate] "
46	    "[-z compression] file\n");
47	exit(EX_USAGE);
48}
49
50int
51main(int argc, char * const *argv)
52{
53	struct fifolog_writer *f;
54	const char *es;
55	struct pollfd pfd[1];
56	char buf[BUFSIZ], *p;
57	int i, c;
58	unsigned w_opt = 10;
59	unsigned s_opt = 60;
60	unsigned z_opt = Z_BEST_COMPRESSION;
61
62	while ((c = getopt(argc, argv, "w:s:z:")) != -1) {
63		switch(c) {
64		case 'w':
65			w_opt = strtoul(optarg, NULL, 0);
66			break;
67		case 's':
68			s_opt = strtoul(optarg, NULL, 0);
69			break;
70		case 'z':
71			z_opt = strtoul(optarg, NULL, 0);
72			break;
73		default:
74			usage();
75		}
76	}
77	argc -= optind;
78	argv += optind;
79	if (argc != 1)
80		usage();
81
82	if (z_opt > 9)
83		usage();
84
85	if (w_opt > s_opt)
86		usage();
87
88	f = fifolog_write_new();
89	assert(f != NULL);
90
91	es = fifolog_write_open(f, argv[0], w_opt, s_opt, z_opt);
92	if (es)
93		err(1, "Error: %s", es);
94
95	while (1) {
96		pfd[0].fd = 0;
97		pfd[0].events = POLLIN;
98		i = poll(pfd, 1, 1000);
99		if (i == 1) {
100			if (fgets(buf, sizeof buf, stdin) == NULL)
101				break;
102			p = strchr(buf, '\0');
103			assert(p != NULL);
104			while (p > buf && isspace(p[-1]))
105				p--;
106			*p = '\0';
107			if (*buf != '\0')
108				fifolog_write_bytes_poll(f, 0, 0, buf, 0);
109		} else if (i == 0)
110			(void)fifolog_write_poll(f, 0);
111	}
112	(void)fifolog_write_flush(f);
113	return (0);
114}
115