fsutil.c revision 1.27 1 1.27 joerg /* $NetBSD: fsutil.c,v 1.27 2020/04/03 19:36:32 joerg Exp $ */
2 1.1 christos
3 1.1 christos /*
4 1.1 christos * Copyright (c) 1990, 1993
5 1.1 christos * The Regents of the University of California. All rights reserved.
6 1.1 christos *
7 1.1 christos * Redistribution and use in source and binary forms, with or without
8 1.1 christos * modification, are permitted provided that the following conditions
9 1.1 christos * are met:
10 1.1 christos * 1. Redistributions of source code must retain the above copyright
11 1.1 christos * notice, this list of conditions and the following disclaimer.
12 1.1 christos * 2. Redistributions in binary form must reproduce the above copyright
13 1.1 christos * notice, this list of conditions and the following disclaimer in the
14 1.1 christos * documentation and/or other materials provided with the distribution.
15 1.13 agc * 3. Neither the name of the University nor the names of its contributors
16 1.1 christos * may be used to endorse or promote products derived from this software
17 1.1 christos * without specific prior written permission.
18 1.1 christos *
19 1.1 christos * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
20 1.1 christos * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
21 1.1 christos * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
22 1.1 christos * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
23 1.1 christos * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
24 1.1 christos * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
25 1.1 christos * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
26 1.1 christos * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
27 1.1 christos * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
28 1.1 christos * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
29 1.1 christos * SUCH DAMAGE.
30 1.1 christos */
31 1.4 lukem
32 1.4 lukem #include <sys/cdefs.h>
33 1.1 christos #ifndef lint
34 1.27 joerg __RCSID("$NetBSD: fsutil.c,v 1.27 2020/04/03 19:36:32 joerg Exp $");
35 1.1 christos #endif /* not lint */
36 1.1 christos
37 1.26 dholland /*
38 1.26 dholland * used by sbin/fsck
39 1.26 dholland * used by sbin/fsck_ext2fs
40 1.26 dholland * used by sbin/fsck_ffs
41 1.26 dholland * used by sbin/fsck_lfs
42 1.26 dholland * used by sbin/fsck_msdos
43 1.26 dholland * used by sbin/fsck_v7fs
44 1.26 dholland * used by sbin/fsdb
45 1.26 dholland * used by usr.sbin/quotacheck
46 1.26 dholland */
47 1.26 dholland
48 1.11 lukem #include <sys/param.h>
49 1.11 lukem
50 1.1 christos #include <stdio.h>
51 1.1 christos #include <string.h>
52 1.1 christos #include <stdlib.h>
53 1.1 christos #include <stdarg.h>
54 1.1 christos #include <errno.h>
55 1.1 christos #include <fstab.h>
56 1.20 christos #include <fcntl.h>
57 1.20 christos #include <unistd.h>
58 1.1 christos #include <err.h>
59 1.21 christos #include <util.h>
60 1.1 christos
61 1.1 christos #include <sys/types.h>
62 1.1 christos #include <sys/stat.h>
63 1.1 christos
64 1.1 christos #include "fsutil.h"
65 1.17 christos #include "exitvalues.h"
66 1.1 christos
67 1.25 dholland volatile sig_atomic_t returntosingle;
68 1.25 dholland
69 1.27 joerg void (*ckfinish)(int);
70 1.27 joerg
71 1.1 christos static const char *dev = NULL;
72 1.1 christos static int hot = 0;
73 1.1 christos static int preen = 0;
74 1.27 joerg int quiet; /* don't report clean filesystems */
75 1.15 christos #define F_ERROR 0x80000000
76 1.1 christos
77 1.1 christos void
78 1.10 lukem setcdevname(const char *cd, int pr)
79 1.1 christos {
80 1.10 lukem
81 1.1 christos dev = cd;
82 1.1 christos preen = pr;
83 1.1 christos }
84 1.1 christos
85 1.1 christos const char *
86 1.10 lukem cdevname(void)
87 1.1 christos {
88 1.10 lukem
89 1.1 christos return dev;
90 1.1 christos }
91 1.1 christos
92 1.1 christos int
93 1.10 lukem hotroot(void)
94 1.1 christos {
95 1.10 lukem
96 1.1 christos return hot;
97 1.1 christos }
98 1.1 christos
99 1.1 christos /*VARARGS*/
100 1.1 christos void
101 1.1 christos errexit(const char *fmt, ...)
102 1.1 christos {
103 1.1 christos va_list ap;
104 1.3 christos
105 1.1 christos va_start(ap, fmt);
106 1.1 christos (void) vfprintf(stderr, fmt, ap);
107 1.1 christos va_end(ap);
108 1.18 lukem (void)fprintf(stderr, "\n");
109 1.17 christos exit(FSCK_EXIT_CHECK_FAILED);
110 1.1 christos }
111 1.1 christos
112 1.12 perseant void
113 1.10 lukem vmsg(int fatal, const char *fmt, va_list ap)
114 1.1 christos {
115 1.15 christos int serr = fatal & F_ERROR;
116 1.15 christos int serrno = errno;
117 1.15 christos fatal &= ~F_ERROR;
118 1.10 lukem
119 1.1 christos if (!fatal && preen)
120 1.14 dsl (void)printf("%s: ", dev);
121 1.14 dsl if (quiet && !preen) {
122 1.14 dsl (void)printf("** %s (vmsg)\n", dev);
123 1.14 dsl quiet = 0;
124 1.14 dsl }
125 1.1 christos
126 1.1 christos (void) vprintf(fmt, ap);
127 1.15 christos if (serr)
128 1.15 christos printf(" (%s)", strerror(serrno));
129 1.1 christos
130 1.1 christos if (fatal && preen)
131 1.1 christos (void) printf("\n");
132 1.1 christos
133 1.1 christos if (fatal && preen) {
134 1.1 christos (void) printf(
135 1.1 christos "%s: UNEXPECTED INCONSISTENCY; RUN %s MANUALLY.\n",
136 1.9 cgd dev, getprogname());
137 1.17 christos exit(FSCK_EXIT_CHECK_FAILED);
138 1.1 christos }
139 1.1 christos }
140 1.1 christos
141 1.1 christos /*VARARGS*/
142 1.1 christos void
143 1.1 christos pfatal(const char *fmt, ...)
144 1.1 christos {
145 1.1 christos va_list ap;
146 1.3 christos
147 1.1 christos va_start(ap, fmt);
148 1.1 christos vmsg(1, fmt, ap);
149 1.1 christos va_end(ap);
150 1.1 christos }
151 1.1 christos
152 1.1 christos /*VARARGS*/
153 1.1 christos void
154 1.1 christos pwarn(const char *fmt, ...)
155 1.1 christos {
156 1.1 christos va_list ap;
157 1.10 lukem
158 1.1 christos va_start(ap, fmt);
159 1.1 christos vmsg(0, fmt, ap);
160 1.1 christos va_end(ap);
161 1.1 christos }
162 1.1 christos
163 1.1 christos void
164 1.15 christos perr(const char *fmt, ...)
165 1.1 christos {
166 1.15 christos va_list ap;
167 1.10 lukem
168 1.15 christos va_start(ap, fmt);
169 1.15 christos vmsg(1 | F_ERROR, fmt, ap);
170 1.15 christos va_end(ap);
171 1.1 christos }
172 1.1 christos
173 1.1 christos void
174 1.1 christos panic(const char *fmt, ...)
175 1.1 christos {
176 1.1 christos va_list ap;
177 1.3 christos
178 1.1 christos va_start(ap, fmt);
179 1.1 christos vmsg(1, fmt, ap);
180 1.1 christos va_end(ap);
181 1.17 christos exit(FSCK_EXIT_CHECK_FAILED);
182 1.1 christos }
183 1.1 christos
184 1.6 mycroft const char *
185 1.10 lukem blockcheck(const char *origname)
186 1.1 christos {
187 1.1 christos struct stat stslash, stblock, stchar;
188 1.23 christos const char *newname, *raw, *cooked;
189 1.1 christos struct fstab *fsp;
190 1.1 christos int retried = 0;
191 1.24 mlelstv ssize_t len;
192 1.23 christos char cbuf[MAXPATHLEN];
193 1.22 christos static char buf[MAXPATHLEN];
194 1.1 christos
195 1.1 christos hot = 0;
196 1.1 christos if (stat("/", &stslash) < 0) {
197 1.15 christos perr("Can't stat `/'");
198 1.1 christos return (origname);
199 1.1 christos }
200 1.24 mlelstv len = readlink(origname, cbuf, sizeof(cbuf)-1);
201 1.24 mlelstv if (len == -1) {
202 1.24 mlelstv newname = origname;
203 1.24 mlelstv } else {
204 1.24 mlelstv cbuf[len] = '\0';
205 1.24 mlelstv newname = cbuf;
206 1.24 mlelstv }
207 1.1 christos retry:
208 1.1 christos if (stat(newname, &stblock) < 0) {
209 1.15 christos perr("Can't stat `%s'", newname);
210 1.23 christos return origname;
211 1.1 christos }
212 1.1 christos if (S_ISBLK(stblock.st_mode)) {
213 1.1 christos if (stslash.st_dev == stblock.st_rdev)
214 1.1 christos hot++;
215 1.22 christos raw = getdiskrawname(buf, sizeof(buf), newname);
216 1.22 christos if (raw == NULL) {
217 1.22 christos perr("Can't convert to raw `%s'", newname);
218 1.22 christos return origname;
219 1.22 christos }
220 1.1 christos if (stat(raw, &stchar) < 0) {
221 1.15 christos perr("Can't stat `%s'", raw);
222 1.23 christos return origname;
223 1.1 christos }
224 1.1 christos if (S_ISCHR(stchar.st_mode)) {
225 1.23 christos return raw;
226 1.1 christos } else {
227 1.23 christos perr("%s is not a character device\n", raw);
228 1.23 christos return origname;
229 1.1 christos }
230 1.1 christos } else if (S_ISCHR(stblock.st_mode) && !retried) {
231 1.23 christos cooked = getdiskcookedname(cbuf, sizeof(cbuf), newname);
232 1.23 christos if (cooked == NULL) {
233 1.22 christos perr("Can't convert to cooked `%s'", newname);
234 1.22 christos return origname;
235 1.22 christos } else
236 1.23 christos newname = cooked;
237 1.1 christos retried++;
238 1.1 christos goto retry;
239 1.1 christos } else if ((fsp = getfsfile(newname)) != 0 && !retried) {
240 1.23 christos newname = getfsspecname(cbuf, sizeof(cbuf), fsp->fs_spec);
241 1.21 christos if (newname == NULL)
242 1.21 christos perr("%s", buf);
243 1.1 christos retried++;
244 1.1 christos goto retry;
245 1.1 christos }
246 1.1 christos /*
247 1.1 christos * Not a block or character device, just return name and
248 1.1 christos * let the user decide whether to use it.
249 1.1 christos */
250 1.23 christos return origname;
251 1.1 christos }
252 1.19 christos
253 1.19 christos const char *
254 1.19 christos print_mtime(time_t t)
255 1.19 christos {
256 1.19 christos static char b[128];
257 1.19 christos char *p = ctime(&t);
258 1.19 christos if (p != NULL)
259 1.19 christos (void)snprintf(b, sizeof(b), "%12.12s %4.4s ", &p[4], &p[20]);
260 1.19 christos else
261 1.19 christos (void)snprintf(b, sizeof(b), "%lld ", (long long)t);
262 1.19 christos return b;
263 1.19 christos }
264 1.20 christos
265 1.20 christos
266 1.20 christos void
267 1.20 christos catch(int n)
268 1.20 christos {
269 1.20 christos if (ckfinish) (*ckfinish)(0);
270 1.20 christos _exit(FSCK_EXIT_SIGNALLED);
271 1.20 christos }
272 1.20 christos
273 1.20 christos /*
274 1.20 christos * When preening, allow a single quit to signal
275 1.20 christos * a special exit after filesystem checks complete
276 1.20 christos * so that reboot sequence may be interrupted.
277 1.20 christos */
278 1.20 christos void
279 1.20 christos catchquit(int n)
280 1.20 christos {
281 1.20 christos static const char msg[] =
282 1.20 christos "returning to single-user after filesystem check\n";
283 1.20 christos int serrno = errno;
284 1.20 christos
285 1.20 christos (void)write(STDOUT_FILENO, msg, sizeof(msg) - 1);
286 1.20 christos returntosingle = 1;
287 1.20 christos (void)signal(SIGQUIT, SIG_DFL);
288 1.20 christos errno = serrno;
289 1.20 christos }
290 1.20 christos
291 1.20 christos /*
292 1.20 christos * Ignore a single quit signal; wait and flush just in case.
293 1.20 christos * Used by child processes in preen.
294 1.20 christos */
295 1.20 christos void
296 1.20 christos voidquit(int n)
297 1.20 christos {
298 1.20 christos int serrno = errno;
299 1.20 christos
300 1.20 christos sleep(1);
301 1.20 christos (void)signal(SIGQUIT, SIG_IGN);
302 1.20 christos (void)signal(SIGQUIT, SIG_DFL);
303 1.20 christos errno = serrno;
304 1.20 christos }
305