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
37 static void config_get(const char *dirpath, struct hammer_ioc_config *config);
38 static void config_set(const char *dirpath, struct hammer_ioc_config *config);
39 static void config_remove_path(void);
41 static char *ConfigPath;
44 * hammer config [<fs> [configfile]]
46 * Prints out the hammer cleanup configuration for the specified HAMMER
47 * filesystem(s) or the current filesystem.
50 hammer_cmd_config(char **av, int ac)
52 struct hammer_ioc_config config;
57 bzero(&config, sizeof(config));
59 config_get(".", &config);
60 if (config.head.error == 0)
61 printf("%s", config.config.text);
63 errx(2, "hammer config: no configuration found");
68 config_get(dirpath, &config);
69 if (config.head.error == 0)
70 printf("%s", config.config.text);
72 errx(2, "hammer config: no configuration found");
75 config_get(dirpath, &config); /* ignore errors */
76 config.head.error = 0;
78 fd = open(av[1], O_RDONLY);
80 err(2, "hammer config: %s", av[1]);
82 n = read(fd, config.config.text, sizeof(config.config.text) - 1);
83 if (n == sizeof(config.config.text) - 1)
84 err(2, "hammer config: config file too big, limit %zu bytes",
85 sizeof(config.config.text) - 1);
87 bzero(config.config.text + n, sizeof(config.config.text) - n);
88 config_set(dirpath, &config);
93 * hammer viconfig [<fs>]
96 hammer_cmd_viconfig(char **av, int ac)
98 struct hammer_ioc_config config;
99 struct timeval times[2];
102 char *runcmd, *editor, *tmp;
108 errx(1, "hammer viconfig: 0 or 1 argument (<fs>) only");
113 config_get(dirpath, &config);
114 if (config.head.error == ENOENT) {
115 snprintf(config.config.text, sizeof(config.config.text),
117 "# No configuration present, here are some defaults\n"
118 "# you can uncomment. Also remove these instructions\n"
120 "#snapshots 1d 60d\n"
125 "#recopy 30d 10m\n");
126 config.head.error = 0;
128 if (config.head.error)
129 errx(2, "hammer viconfig: read config failed error: %s",
130 strerror(config.head.error));
133 * Edit a temporary file and write back if it was modified.
134 * Adjust the mtime back one second so a quick edit is not
135 * improperly detected as not having been modified.
137 snprintf(path, sizeof(path), "/tmp/configXXXXXXXXXX");
140 atexit(config_remove_path);
142 fd = open(path, O_RDWR|O_CREAT|O_TRUNC, 0600);
144 err(2, "hammer viconfig: creating temporary file %s", path);
145 write(fd, config.config.text, strlen(config.config.text));
146 if (fstat(fd, &st) < 0)
147 err(2, "hammer viconfig");
148 times[0].tv_sec = st.st_mtime - 1;
149 times[0].tv_usec = 0;
154 if ((tmp = getenv("EDITOR")) != NULL ||
155 (tmp = getenv("VISUAL")) != NULL)
156 editor = strdup(tmp);
158 editor = strdup("vi");
160 asprintf(&runcmd, "%s %s", editor, path);
163 if (stat(path, &st) < 0)
164 err(2, "hammer viconfig: unable to stat file after vi");
165 if (times[0].tv_sec == st.st_mtime) {
166 printf("hammer viconfig: no changes were made\n");
170 fd = open(path, O_RDONLY);
172 err(2, "hammer viconfig: unable to read %s", path);
174 n = read(fd, config.config.text, sizeof(config.config.text) - 1);
176 err(2, "hammer viconfig: unable to read %s", path);
177 if (n == sizeof(config.config.text) - 1)
178 err(2, "hammer config: config file too big, limit %zu bytes",
179 sizeof(config.config.text) - 1);
181 bzero(config.config.text + n, sizeof(config.config.text) - n);
182 config_set(dirpath, &config);
188 config_get(const char *dirpath, struct hammer_ioc_config *config)
190 struct hammer_ioc_version version;
193 bzero(&version, sizeof(version));
194 if ((fd = open(dirpath, O_RDONLY)) < 0)
195 err(2, "hammer config: unable to open directory %s", dirpath);
196 if (ioctl(fd, HAMMERIOC_GET_VERSION, &version) < 0)
197 errx(2, "hammer config: not a HAMMER filesystem!");
198 HammerVersion = version.cur_version;
199 if (ioctl(fd, HAMMERIOC_GET_CONFIG, config) < 0)
200 errx(2, "hammer config: config_get");
205 config_set(const char *dirpath, struct hammer_ioc_config *config)
207 struct hammer_ioc_version version;
210 bzero(&version, sizeof(version));
211 if ((fd = open(dirpath, O_RDONLY)) < 0)
212 errx(2, "hammer config: unable to open directory %s", dirpath);
213 if (ioctl(fd, HAMMERIOC_GET_VERSION, &version) < 0)
214 errx(2, "hammer config: not a HAMMER filesystem!");
215 HammerVersion = version.cur_version;
216 if (ioctl(fd, HAMMERIOC_SET_CONFIG, config) < 0)
217 err(2, "hammer config");
222 config_remove_path(void)