2 * Copyright (c) 2009 The DragonFly Project. All rights reserved.
4 * This code is derived from software contributed to The DragonFly Project
5 * by Matthew Dillon <dillon@backplane.com>
7 * Redistribution and use in source and binary forms, with or without
8 * modification, are permitted provided that the following conditions
11 * 1. Redistributions of source code must retain the above copyright
12 * notice, this list of conditions and the following disclaimer.
13 * 2. Redistributions in binary form must reproduce the above copyright
14 * notice, this list of conditions and the following disclaimer in
15 * the documentation and/or other materials provided with the
17 * 3. Neither the name of The DragonFly Project nor the names of its
18 * contributors may be used to endorse or promote products derived
19 * from this software without specific, prior written permission.
21 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
22 * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
23 * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
24 * FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
25 * COPYRIGHT HOLDERS OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
26 * INCIDENTAL, SPECIAL, EXEMPLARY OR CONSEQUENTIAL DAMAGES (INCLUDING,
27 * BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
28 * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED
29 * AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
30 * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT
31 * OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
36 #include <sys/param.h>
37 #include <sys/mount.h>
38 #include <sys/types.h>
44 static void config_get(const char *dirpath, struct hammer_ioc_config *config);
45 static void config_set(const char *dirpath, struct hammer_ioc_config *config);
46 static void config_remove_path(void);
51 * hammer config [<fs> [configfile]]
53 * Prints out the hammer cleanup configuration for the specified HAMMER
54 * filesystem(s) or the current filesystem.
57 hammer_cmd_config(char **av, int ac)
59 struct hammer_ioc_config config;
64 bzero(&config, sizeof(config));
66 config_get(".", &config);
67 if (config.head.error == 0) {
68 printf("%s", config.config.text);
70 errx(2, "hammer config: no configuration found");
77 config_get(dirpath, &config);
78 if (config.head.error == 0) {
79 printf("%s", config.config.text);
81 errx(2, "hammer config: no configuration found");
86 config_get(dirpath, &config); /* ignore errors */
87 config.head.error = 0;
89 fd = open(av[1], O_RDONLY);
91 err(2, "hammer config: %s", av[1]);
94 n = read(fd, config.config.text, sizeof(config.config.text) - 1);
95 if (n == sizeof(config.config.text) - 1) {
96 err(2, "hammer config: config file too big, limit %zu bytes",
97 sizeof(config.config.text) - 1);
100 bzero(config.config.text + n, sizeof(config.config.text) - n);
101 config_set(dirpath, &config);
106 * hammer viconfig [<fs>]
109 hammer_cmd_viconfig(char **av, int ac)
111 struct hammer_ioc_config config;
112 struct timeval times[2];
115 char *runcmd, *editor, *tmp;
121 errx(1, "hammer viconfig: 0 or 1 argument (<fs>) only");
128 config_get(dirpath, &config);
129 if (config.head.error == ENOENT) {
130 snprintf(config.config.text, sizeof(config.config.text),
132 "# No configuration present, here are some defaults\n"
133 "# you can uncomment. Also remove these instructions\n"
135 "#snapshots 1d 60d\n"
140 "#recopy 30d 10m\n");
141 config.head.error = 0;
143 if (config.head.error) {
144 errx(2, "hammer viconfig: read config failed error: %s",
145 strerror(config.head.error));
150 * Edit a temporary file and write back if it was modified.
151 * Adjust the mtime back one second so a quick edit is not
152 * improperly detected as not having been modified.
154 snprintf(path, sizeof(path), "/tmp/configXXXXXXXXXX");
157 atexit(config_remove_path);
159 fd = open(path, O_RDWR|O_CREAT|O_TRUNC, 0600);
161 err(2, "hammer viconfig: creating temporary file %s", path);
162 write(fd, config.config.text, strlen(config.config.text));
163 if (fstat(fd, &st) < 0)
164 err(2, "hammer viconfig");
165 times[0].tv_sec = st.st_mtime - 1;
166 times[0].tv_usec = 0;
171 if ((tmp = getenv("EDITOR")) != NULL ||
172 (tmp = getenv("VISUAL")) != NULL)
173 editor = strdup(tmp);
175 editor = strdup("vi");
177 asprintf(&runcmd, "%s %s", editor, path);
180 if (stat(path, &st) < 0)
181 err(2, "hammer viconfig: unable to stat file after vi");
182 if (times[0].tv_sec == st.st_mtime) {
183 printf("hammer viconfig: no changes were made\n");
187 fd = open(path, O_RDONLY);
189 err(2, "hammer viconfig: unable to read %s", path);
191 n = read(fd, config.config.text, sizeof(config.config.text) - 1);
193 err(2, "hammer viconfig: unable to read %s", path);
194 if (n == sizeof(config.config.text) - 1) {
195 err(2, "hammer config: config file too big, limit %zu bytes",
196 sizeof(config.config.text) - 1);
199 bzero(config.config.text + n, sizeof(config.config.text) - n);
200 config_set(dirpath, &config);
206 config_get(const char *dirpath, struct hammer_ioc_config *config)
208 struct hammer_ioc_version version;
211 bzero(&version, sizeof(version));
212 if ((fd = open(dirpath, O_RDONLY)) < 0)
213 err(2, "hammer config: unable to open directory %s", dirpath);
214 if (ioctl(fd, HAMMERIOC_GET_VERSION, &version) < 0)
215 errx(2, "hammer config: not a HAMMER filesystem!");
217 if (ioctl(fd, HAMMERIOC_GET_CONFIG, config) < 0)
218 errx(2, "hammer config: config_get");
223 config_set(const char *dirpath, struct hammer_ioc_config *config)
225 struct hammer_ioc_version version;
228 bzero(&version, sizeof(version));
229 if ((fd = open(dirpath, O_RDONLY)) < 0)
230 errx(2, "hammer config: unable to open directory %s", dirpath);
231 if (ioctl(fd, HAMMERIOC_GET_VERSION, &version) < 0)
232 errx(2, "hammer config: not a HAMMER filesystem!");
233 if (ioctl(fd, HAMMERIOC_SET_CONFIG, config) < 0)
234 err(2, "hammer config");
239 config_remove_path(void)