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
);
90 n
= read(fd
, config
.config
.text
, sizeof(config
.config
.text
) - 1);
91 if (n
== sizeof(config
.config
.text
) - 1) {
92 err(2, "hammer config: config file too big, limit %zu bytes",
93 sizeof(config
.config
.text
) - 1);
96 bzero(config
.config
.text
+ n
, sizeof(config
.config
.text
) - n
);
97 config_set(dirpath
, &config
);
102 * hammer viconfig [<fs>]
105 hammer_cmd_viconfig(char **av
, int ac
)
107 struct hammer_ioc_config config
;
108 struct timeval times
[2];
111 char *runcmd
, *editor
, *tmp
;
117 errx(1, "hammer viconfig: 0 or 1 argument (<fs>) only");
124 config_get(dirpath
, &config
);
125 if (config
.head
.error
== ENOENT
) {
126 snprintf(config
.config
.text
, sizeof(config
.config
.text
),
128 "# No configuration present, here are some defaults\n"
129 "# you can uncomment. Also remove these instructions\n"
131 "#snapshots 1d 60d\n"
136 "#recopy 30d 10m\n");
137 config
.head
.error
= 0;
139 if (config
.head
.error
) {
140 errx(2, "hammer viconfig: read config failed error: %s",
141 strerror(config
.head
.error
));
146 * Edit a temporary file and write back if it was modified.
147 * Adjust the mtime back one second so a quick edit is not
148 * improperly detected as not having been modified.
150 snprintf(path
, sizeof(path
), "/tmp/configXXXXXXXXXX");
153 atexit(config_remove_path
);
155 fd
= open(path
, O_RDWR
|O_CREAT
|O_TRUNC
, 0600);
157 err(2, "hammer viconfig: creating temporary file %s", path
);
158 write(fd
, config
.config
.text
, strlen(config
.config
.text
));
159 if (fstat(fd
, &st
) < 0)
160 err(2, "hammer viconfig");
161 times
[0].tv_sec
= st
.st_mtime
- 1;
162 times
[0].tv_usec
= 0;
167 if ((tmp
= getenv("EDITOR")) != NULL
||
168 (tmp
= getenv("VISUAL")) != NULL
)
169 editor
= strdup(tmp
);
171 editor
= strdup("vi");
173 asprintf(&runcmd
, "%s %s", editor
, path
);
176 if (stat(path
, &st
) < 0)
177 err(2, "hammer viconfig: unable to stat file after vi");
178 if (times
[0].tv_sec
== st
.st_mtime
) {
179 printf("hammer viconfig: no changes were made\n");
183 fd
= open(path
, O_RDONLY
);
185 err(2, "hammer viconfig: unable to read %s", path
);
187 n
= read(fd
, config
.config
.text
, sizeof(config
.config
.text
) - 1);
189 err(2, "hammer viconfig: unable to read %s", path
);
190 if (n
== sizeof(config
.config
.text
) - 1) {
191 err(2, "hammer config: config file too big, limit %zu bytes",
192 sizeof(config
.config
.text
) - 1);
195 bzero(config
.config
.text
+ n
, sizeof(config
.config
.text
) - n
);
196 config_set(dirpath
, &config
);
202 config_get(const char *dirpath
, struct hammer_ioc_config
*config
)
204 struct hammer_ioc_version version
;
207 bzero(&version
, sizeof(version
));
208 if ((fd
= open(dirpath
, O_RDONLY
)) < 0)
209 err(2, "hammer config: unable to open directory %s", dirpath
);
210 if (ioctl(fd
, HAMMERIOC_GET_VERSION
, &version
) < 0)
211 errx(2, "hammer config: not a HAMMER filesystem!");
213 if (ioctl(fd
, HAMMERIOC_GET_CONFIG
, config
) < 0)
214 errx(2, "hammer config: config_get");
219 config_set(const char *dirpath
, struct hammer_ioc_config
*config
)
221 struct hammer_ioc_version version
;
224 bzero(&version
, sizeof(version
));
225 if ((fd
= open(dirpath
, O_RDONLY
)) < 0)
226 errx(2, "hammer config: unable to open directory %s", dirpath
);
227 if (ioctl(fd
, HAMMERIOC_GET_VERSION
, &version
) < 0)
228 errx(2, "hammer config: not a HAMMER filesystem!");
229 if (ioctl(fd
, HAMMERIOC_SET_CONFIG
, config
) < 0)
230 err(2, "hammer config");
235 config_remove_path(void)