Annotation of src/sbin/fsck/fsutil.c, Revision 1.8
1.8 ! is 1: /* $NetBSD: fsutil.c,v 1.7 1998/07/30 17:41:03 thorpej Exp $ */
1.1 christos 2:
3: /*
4: * Copyright (c) 1990, 1993
5: * The Regents of the University of California. All rights reserved.
6: *
7: * Redistribution and use in source and binary forms, with or without
8: * modification, are permitted provided that the following conditions
9: * are met:
10: * 1. Redistributions of source code must retain the above copyright
11: * notice, this list of conditions and the following disclaimer.
12: * 2. Redistributions in binary form must reproduce the above copyright
13: * notice, this list of conditions and the following disclaimer in the
14: * documentation and/or other materials provided with the distribution.
15: * 3. All advertising materials mentioning features or use of this software
16: * must display the following acknowledgement:
17: * This product includes software developed by the University of
18: * California, Berkeley and its contributors.
19: * 4. Neither the name of the University nor the names of its contributors
20: * may be used to endorse or promote products derived from this software
21: * without specific prior written permission.
22: *
23: * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
24: * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
25: * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
26: * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
27: * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
28: * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
29: * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
30: * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
31: * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
32: * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
33: * SUCH DAMAGE.
34: */
1.4 lukem 35:
36: #include <sys/cdefs.h>
1.1 christos 37: #ifndef lint
1.8 ! is 38: __RCSID("$NetBSD: fsutil.c,v 1.7 1998/07/30 17:41:03 thorpej Exp $");
1.1 christos 39: #endif /* not lint */
40:
41: #include <stdio.h>
42: #include <string.h>
43: #include <stdlib.h>
44: #if __STDC__
45: #include <stdarg.h>
46: #else
47: #include <varargs.h>
48: #endif
49: #include <errno.h>
50: #include <fstab.h>
51: #include <err.h>
52:
53: #include <sys/types.h>
54: #include <sys/stat.h>
55:
56: #include "fsutil.h"
57:
58: static const char *dev = NULL;
59: static int hot = 0;
60: static int preen = 0;
61:
62: extern char *__progname;
63:
1.8 ! is 64: static void vmsg __P((int, const char *, va_list))
! 65: __attribute((__format__(__printf__,2,0)));
1.1 christos 66:
67: void
68: setcdevname(cd, pr)
69: const char *cd;
70: int pr;
71: {
72: dev = cd;
73: preen = pr;
74: }
75:
76: const char *
77: cdevname()
78: {
79: return dev;
80: }
81:
82: int
83: hotroot()
84: {
85: return hot;
86: }
87:
88: /*VARARGS*/
89: void
90: #if __STDC__
91: errexit(const char *fmt, ...)
92: #else
1.3 christos 93: errexit(va_alist)
1.1 christos 94: va_dcl
95: #endif
96: {
97: va_list ap;
1.3 christos 98:
1.1 christos 99: #if __STDC__
100: va_start(ap, fmt);
101: #else
1.3 christos 102: const char *fmt;
103:
1.1 christos 104: va_start(ap);
1.3 christos 105: fmt = va_arg(ap, const char *);
1.1 christos 106: #endif
107: (void) vfprintf(stderr, fmt, ap);
108: va_end(ap);
109: exit(8);
110: }
111:
112: static void
113: vmsg(fatal, fmt, ap)
114: int fatal;
115: const char *fmt;
116: va_list ap;
117: {
118: if (!fatal && preen)
119: (void) printf("%s: ", dev);
120:
121: (void) vprintf(fmt, ap);
122:
123: if (fatal && preen)
124: (void) printf("\n");
125:
126: if (fatal && preen) {
127: (void) printf(
128: "%s: UNEXPECTED INCONSISTENCY; RUN %s MANUALLY.\n",
129: dev, __progname);
130: exit(8);
131: }
132: }
133:
134: /*VARARGS*/
135: void
136: #if __STDC__
137: pfatal(const char *fmt, ...)
138: #else
1.3 christos 139: pfatal(va_alist)
1.1 christos 140: va_dcl
141: #endif
142: {
143: va_list ap;
1.3 christos 144:
1.1 christos 145: #if __STDC__
146: va_start(ap, fmt);
147: #else
1.3 christos 148: const char *fmt;
149:
1.1 christos 150: va_start(ap);
1.3 christos 151: fmt = va_arg(ap, const char *);
1.1 christos 152: #endif
153: vmsg(1, fmt, ap);
154: va_end(ap);
155: }
156:
157: /*VARARGS*/
158: void
159: #if __STDC__
160: pwarn(const char *fmt, ...)
161: #else
1.3 christos 162: pwarn(va_alist)
1.1 christos 163: va_dcl
164: #endif
165: {
166: va_list ap;
167: #if __STDC__
168: va_start(ap, fmt);
169: #else
1.3 christos 170: const char *fmt;
171:
1.1 christos 172: va_start(ap);
1.3 christos 173: fmt = va_arg(ap, const char *);
1.1 christos 174: #endif
175: vmsg(0, fmt, ap);
176: va_end(ap);
177: }
178:
179: void
180: perror(s)
181: const char *s;
182: {
183: pfatal("%s (%s)", s, strerror(errno));
184: }
185:
186: void
187: #if __STDC__
188: panic(const char *fmt, ...)
189: #else
1.3 christos 190: panic(va_alist)
1.1 christos 191: va_dcl
192: #endif
193: {
194: va_list ap;
1.3 christos 195:
1.1 christos 196: #if __STDC__
197: va_start(ap, fmt);
198: #else
1.3 christos 199: const char *fmt;
200:
1.1 christos 201: va_start(ap);
1.3 christos 202: fmt = va_arg(ap, const char *);
1.1 christos 203: #endif
204: vmsg(1, fmt, ap);
205: va_end(ap);
206: exit(8);
207: }
208:
1.6 mycroft 209: const char *
1.1 christos 210: unrawname(name)
1.6 mycroft 211: const char *name;
1.1 christos 212: {
1.6 mycroft 213: static char unrawbuf[32];
214: const char *dp;
1.1 christos 215: struct stat stb;
216:
217: if ((dp = strrchr(name, '/')) == 0)
218: return (name);
219: if (stat(name, &stb) < 0)
220: return (name);
221: if (!S_ISCHR(stb.st_mode))
222: return (name);
223: if (dp[1] != 'r')
224: return (name);
1.7 thorpej 225: (void)snprintf(unrawbuf, 32, "%.*s/%s", (int)(dp - name), name, dp + 2);
1.6 mycroft 226: return (unrawbuf);
1.1 christos 227: }
228:
1.6 mycroft 229: const char *
1.1 christos 230: rawname(name)
1.6 mycroft 231: const char *name;
1.1 christos 232: {
233: static char rawbuf[32];
1.6 mycroft 234: const char *dp;
1.1 christos 235:
236: if ((dp = strrchr(name, '/')) == 0)
237: return (0);
1.7 thorpej 238: (void)snprintf(rawbuf, 32, "%.*s/r%s", (int)(dp - name), name, dp + 1);
1.1 christos 239: return (rawbuf);
240: }
241:
1.6 mycroft 242: const char *
1.1 christos 243: blockcheck(origname)
1.6 mycroft 244: const char *origname;
1.1 christos 245: {
246: struct stat stslash, stblock, stchar;
1.6 mycroft 247: const char *newname, *raw;
1.1 christos 248: struct fstab *fsp;
249: int retried = 0;
250:
251: hot = 0;
252: if (stat("/", &stslash) < 0) {
253: perror("/");
254: printf("Can't stat root\n");
255: return (origname);
256: }
257: newname = origname;
258: retry:
259: if (stat(newname, &stblock) < 0) {
260: perror(newname);
261: printf("Can't stat %s\n", newname);
262: return (origname);
263: }
264: if (S_ISBLK(stblock.st_mode)) {
265: if (stslash.st_dev == stblock.st_rdev)
266: hot++;
267: raw = rawname(newname);
268: if (stat(raw, &stchar) < 0) {
269: perror(raw);
270: printf("Can't stat %s\n", raw);
271: return (origname);
272: }
273: if (S_ISCHR(stchar.st_mode)) {
274: return (raw);
275: } else {
276: printf("%s is not a character device\n", raw);
277: return (origname);
278: }
279: } else if (S_ISCHR(stblock.st_mode) && !retried) {
280: newname = unrawname(newname);
281: retried++;
282: goto retry;
283: } else if ((fsp = getfsfile(newname)) != 0 && !retried) {
284: newname = fsp->fs_spec;
285: retried++;
286: goto retry;
287: }
288: /*
289: * Not a block or character device, just return name and
290: * let the user decide whether to use it.
291: */
292: return (origname);
293: }
294:
295:
296: void *
297: emalloc(s)
298: size_t s;
299: {
1.5 mycroft 300: void *p;
301:
302: p = malloc(s);
1.1 christos 303: if (p == NULL)
304: err(1, "malloc failed");
1.5 mycroft 305: return (p);
1.2 christos 306: }
307:
308:
309: void *
310: erealloc(p, s)
311: void *p;
312: size_t s;
313: {
1.5 mycroft 314: void *q;
315:
316: q = realloc(p, s);
317: if (q == NULL)
1.2 christos 318: err(1, "realloc failed");
1.5 mycroft 319: return (q);
1.1 christos 320: }
321:
322:
323: char *
324: estrdup(s)
325: const char *s;
326: {
1.5 mycroft 327: char *p;
328:
329: p = strdup(s);
1.1 christos 330: if (p == NULL)
331: err(1, "strdup failed");
1.5 mycroft 332: return (p);
1.1 christos 333: }
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