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-rw-r--r--sbin/fsck/fsutil.c363
1 files changed, 363 insertions, 0 deletions
diff --git a/sbin/fsck/fsutil.c b/sbin/fsck/fsutil.c
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+/* $NetBSD: fsutil.c,v 1.7 1998/07/30 17:41:03 thorpej Exp $ */
+
+/*
+ * Copyright (c) 1990, 1993
+ * The Regents of the University of California. All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the above copyright
+ * notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ * notice, this list of conditions and the following disclaimer in the
+ * documentation and/or other materials provided with the distribution.
+ * 3. All advertising materials mentioning features or use of this software
+ * must display the following acknowledgement:
+ * This product includes software developed by the University of
+ * California, Berkeley and its contributors.
+ * 4. Neither the name of the University nor the names of its contributors
+ * may be used to endorse or promote products derived from this software
+ * without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
+ * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
+ * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+ * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+ * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+ * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+ * SUCH DAMAGE.
+ *
+ * $FreeBSD$
+ */
+
+#include <sys/cdefs.h>
+#ifndef lint
+__RCSID("$NetBSD: fsutil.c,v 1.7 1998/07/30 17:41:03 thorpej Exp $");
+#endif /* not lint */
+
+#include <stdio.h>
+#include <string.h>
+#include <stdlib.h>
+#if __STDC__
+#include <stdarg.h>
+#else
+#include <varargs.h>
+#endif
+#include <errno.h>
+#include <fstab.h>
+#include <err.h>
+
+#include <sys/types.h>
+#include <sys/stat.h>
+
+#include "fsutil.h"
+
+static const char *dev = NULL;
+static int hot = 0;
+static int preen = 0;
+
+extern char *__progname;
+
+static void vmsg __P((int, const char *, va_list));
+
+void
+setcdevname(cd, pr)
+ const char *cd;
+ int pr;
+{
+ dev = cd;
+ preen = pr;
+}
+
+const char *
+cdevname()
+{
+ return dev;
+}
+
+int
+hotroot()
+{
+ return hot;
+}
+
+/*VARARGS*/
+void
+#if __STDC__
+errexit(const char *fmt, ...)
+#else
+errexit(va_alist)
+ va_dcl
+#endif
+{
+ va_list ap;
+
+#if __STDC__
+ va_start(ap, fmt);
+#else
+ const char *fmt;
+
+ va_start(ap);
+ fmt = va_arg(ap, const char *);
+#endif
+ (void) vfprintf(stderr, fmt, ap);
+ va_end(ap);
+ exit(8);
+}
+
+static void
+vmsg(fatal, fmt, ap)
+ int fatal;
+ const char *fmt;
+ va_list ap;
+{
+ if (!fatal && preen)
+ (void) printf("%s: ", dev);
+
+ (void) vprintf(fmt, ap);
+
+ if (fatal && preen)
+ (void) printf("\n");
+
+ if (fatal && preen) {
+ (void) printf(
+ "%s: UNEXPECTED INCONSISTENCY; RUN %s MANUALLY.\n",
+ dev, __progname);
+ exit(8);
+ }
+}
+
+/*VARARGS*/
+void
+#if __STDC__
+pfatal(const char *fmt, ...)
+#else
+pfatal(va_alist)
+ va_dcl
+#endif
+{
+ va_list ap;
+
+#if __STDC__
+ va_start(ap, fmt);
+#else
+ const char *fmt;
+
+ va_start(ap);
+ fmt = va_arg(ap, const char *);
+#endif
+ vmsg(1, fmt, ap);
+ va_end(ap);
+}
+
+/*VARARGS*/
+void
+#if __STDC__
+pwarn(const char *fmt, ...)
+#else
+pwarn(va_alist)
+ va_dcl
+#endif
+{
+ va_list ap;
+#if __STDC__
+ va_start(ap, fmt);
+#else
+ const char *fmt;
+
+ va_start(ap);
+ fmt = va_arg(ap, const char *);
+#endif
+ vmsg(0, fmt, ap);
+ va_end(ap);
+}
+
+void
+perror(s)
+ const char *s;
+{
+ pfatal("%s (%s)", s, strerror(errno));
+}
+
+void
+#if __STDC__
+panic(const char *fmt, ...)
+#else
+panic(va_alist)
+ va_dcl
+#endif
+{
+ va_list ap;
+
+#if __STDC__
+ va_start(ap, fmt);
+#else
+ const char *fmt;
+
+ va_start(ap);
+ fmt = va_arg(ap, const char *);
+#endif
+ vmsg(1, fmt, ap);
+ va_end(ap);
+ exit(8);
+}
+
+const char *
+unrawname(name)
+ const char *name;
+{
+ static char unrawbuf[32];
+ const char *dp;
+ struct stat stb;
+
+ if ((dp = strrchr(name, '/')) == 0)
+ return (name);
+ if (stat(name, &stb) < 0)
+ return (name);
+ if (!S_ISCHR(stb.st_mode))
+ return (name);
+ if (dp[1] != 'r')
+ return (name);
+ (void)snprintf(unrawbuf, 32, "%.*s/%s", (int)(dp - name), name, dp + 2);
+ return (unrawbuf);
+}
+
+const char *
+rawname(name)
+ const char *name;
+{
+ static char rawbuf[32];
+ const char *dp;
+
+ if ((dp = strrchr(name, '/')) == 0)
+ return (0);
+ (void)snprintf(rawbuf, 32, "%.*s/r%s", (int)(dp - name), name, dp + 1);
+ return (rawbuf);
+}
+
+const char *
+devcheck(origname)
+ const char *origname;
+{
+ struct stat stslash, stchar;
+
+ if (stat("/", &stslash) < 0) {
+ perror("/");
+ printf("Can't stat root\n");
+ return (origname);
+ }
+ if (stat(origname, &stchar) < 0) {
+ perror(origname);
+ printf("Can't stat %s\n", origname);
+ return (origname);
+ }
+ if (!S_ISCHR(stchar.st_mode)) {
+ perror(origname);
+ printf("%s is not a char device\n", origname);
+ }
+ return (origname);
+}
+
+#if 0
+/*
+ * XXX this code is from NetBSD, but fails in FreeBSD because we
+ * don't have blockdevs. I don't think its needed.
+ */
+const char *
+blockcheck(origname)
+ const char *origname;
+{
+ struct stat stslash, stblock, stchar;
+ const char *newname, *raw;
+ struct fstab *fsp;
+ int retried = 0;
+
+ hot = 0;
+ if (stat("/", &stslash) < 0) {
+ perror("/");
+ printf("Can't stat root\n");
+ return (origname);
+ }
+ newname = origname;
+retry:
+ if (stat(newname, &stblock) < 0) {
+ perror(newname);
+ printf("Can't stat %s\n", newname);
+ return (origname);
+ }
+ if (S_ISBLK(stblock.st_mode)) {
+ if (stslash.st_dev == stblock.st_rdev)
+ hot++;
+ raw = rawname(newname);
+ if (stat(raw, &stchar) < 0) {
+ perror(raw);
+ printf("Can't stat %s\n", raw);
+ return (origname);
+ }
+ if (S_ISCHR(stchar.st_mode)) {
+ return (raw);
+ } else {
+ printf("%s is not a character device\n", raw);
+ return (origname);
+ }
+ } else if (S_ISCHR(stblock.st_mode) && !retried) {
+ newname = unrawname(newname);
+ retried++;
+ goto retry;
+ } else if ((fsp = getfsfile(newname)) != 0 && !retried) {
+ newname = fsp->fs_spec;
+ retried++;
+ goto retry;
+ }
+ /*
+ * Not a block or character device, just return name and
+ * let the user decide whether to use it.
+ */
+ return (origname);
+}
+#endif
+
+
+void *
+emalloc(s)
+ size_t s;
+{
+ void *p;
+
+ p = malloc(s);
+ if (p == NULL)
+ err(1, "malloc failed");
+ return (p);
+}
+
+
+void *
+erealloc(p, s)
+ void *p;
+ size_t s;
+{
+ void *q;
+
+ q = realloc(p, s);
+ if (q == NULL)
+ err(1, "realloc failed");
+ return (q);
+}
+
+
+char *
+estrdup(s)
+ const char *s;
+{
+ char *p;
+
+ p = strdup(s);
+ if (p == NULL)
+ err(1, "strdup failed");
+ return (p);
+}
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