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5979df34a6
as __printflike()/__printf0like(), adding const, or adding missing "%s" format strings, as appropriate. MFC after: 2 weeks
407 lines
7.6 KiB
C
407 lines
7.6 KiB
C
/* $NetBSD: fsutil.c,v 1.7 1998/07/30 17:41:03 thorpej Exp $ */
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/*
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* Copyright (c) 1990, 1993
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* The Regents of the University of California. All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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* 3. All advertising materials mentioning features or use of this software
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* must display the following acknowledgement:
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* This product includes software developed by the University of
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* California, Berkeley and its contributors.
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* 4. Neither the name of the University nor the names of its contributors
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* may be used to endorse or promote products derived from this software
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* without specific prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
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* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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* ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
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* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
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* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
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* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
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* SUCH DAMAGE.
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*
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* $FreeBSD$
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*/
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#include <sys/cdefs.h>
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#ifndef lint
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__RCSID("$NetBSD: fsutil.c,v 1.7 1998/07/30 17:41:03 thorpej Exp $");
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#endif /* not lint */
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#include <stdio.h>
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#include <string.h>
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#include <stdlib.h>
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#if __STDC__
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#include <stdarg.h>
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#else
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#include <varargs.h>
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#endif
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#include <errno.h>
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#include <fstab.h>
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#include <err.h>
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#include <paths.h>
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#include <sys/param.h>
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#include <sys/stat.h>
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#include <sys/mount.h>
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#include "fsutil.h"
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static const char *dev = NULL;
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static int hot = 0;
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static int preen = 0;
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extern char *__progname;
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static void vmsg __P((int, const char *, va_list)) __printflike(2, 0);
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void
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setcdevname(cd, pr)
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const char *cd;
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int pr;
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{
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dev = cd;
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preen = pr;
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}
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const char *
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cdevname()
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{
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return dev;
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}
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int
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hotroot()
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{
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return hot;
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}
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/*VARARGS*/
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void
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#if __STDC__
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errexit(const char *fmt, ...)
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#else
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errexit(va_alist)
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va_dcl
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#endif
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{
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va_list ap;
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#if __STDC__
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va_start(ap, fmt);
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#else
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const char *fmt;
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va_start(ap);
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fmt = va_arg(ap, const char *);
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#endif
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(void) vfprintf(stderr, fmt, ap);
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va_end(ap);
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exit(8);
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}
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static void
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vmsg(fatal, fmt, ap)
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int fatal;
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const char *fmt;
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va_list ap;
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{
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if (!fatal && preen)
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(void) printf("%s: ", dev);
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(void) vprintf(fmt, ap);
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if (fatal && preen)
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(void) printf("\n");
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if (fatal && preen) {
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(void) printf(
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"%s: UNEXPECTED INCONSISTENCY; RUN %s MANUALLY.\n",
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dev, __progname);
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exit(8);
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}
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}
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/*VARARGS*/
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void
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#if __STDC__
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pfatal(const char *fmt, ...)
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#else
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pfatal(va_alist)
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va_dcl
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#endif
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{
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va_list ap;
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#if __STDC__
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va_start(ap, fmt);
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#else
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const char *fmt;
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va_start(ap);
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fmt = va_arg(ap, const char *);
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#endif
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vmsg(1, fmt, ap);
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va_end(ap);
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}
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/*VARARGS*/
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void
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#if __STDC__
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pwarn(const char *fmt, ...)
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#else
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pwarn(va_alist)
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va_dcl
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#endif
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{
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va_list ap;
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#if __STDC__
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va_start(ap, fmt);
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#else
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const char *fmt;
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va_start(ap);
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fmt = va_arg(ap, const char *);
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#endif
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vmsg(0, fmt, ap);
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va_end(ap);
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}
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void
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perror(s)
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const char *s;
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{
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pfatal("%s (%s)", s, strerror(errno));
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}
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void
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#if __STDC__
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panic(const char *fmt, ...)
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#else
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panic(va_alist)
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va_dcl
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#endif
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{
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va_list ap;
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#if __STDC__
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va_start(ap, fmt);
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#else
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const char *fmt;
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va_start(ap);
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fmt = va_arg(ap, const char *);
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#endif
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vmsg(1, fmt, ap);
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va_end(ap);
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exit(8);
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}
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const char *
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unrawname(name)
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const char *name;
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{
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static char unrawbuf[32];
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const char *dp;
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struct stat stb;
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if ((dp = strrchr(name, '/')) == 0)
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return (name);
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if (stat(name, &stb) < 0)
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return (name);
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if (!S_ISCHR(stb.st_mode))
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return (name);
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if (dp[1] != 'r')
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return (name);
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(void)snprintf(unrawbuf, 32, "%.*s/%s", (int)(dp - name), name, dp + 2);
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return (unrawbuf);
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}
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const char *
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rawname(name)
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const char *name;
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{
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static char rawbuf[32];
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const char *dp;
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if ((dp = strrchr(name, '/')) == 0)
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return (0);
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(void)snprintf(rawbuf, 32, "%.*s/r%s", (int)(dp - name), name, dp + 1);
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return (rawbuf);
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}
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const char *
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devcheck(origname)
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const char *origname;
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{
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struct stat stslash, stchar;
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if (stat("/", &stslash) < 0) {
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perror("/");
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printf("Can't stat root\n");
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return (origname);
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}
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if (stat(origname, &stchar) < 0) {
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perror(origname);
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printf("Can't stat %s\n", origname);
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return (origname);
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}
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if (!S_ISCHR(stchar.st_mode)) {
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perror(origname);
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printf("%s is not a char device\n", origname);
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}
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return (origname);
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}
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/*
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* Get the mount point information for name.
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*/
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struct statfs *
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getmntpt(name)
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const char *name;
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{
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struct stat devstat, mntdevstat;
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char device[sizeof(_PATH_DEV) - 1 + MNAMELEN];
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char *devname;
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struct statfs *mntbuf, *statfsp;
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int i, mntsize, isdev;
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if (stat(name, &devstat) != 0)
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return (NULL);
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if (S_ISCHR(devstat.st_mode) || S_ISBLK(devstat.st_mode))
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isdev = 1;
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else
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isdev = 0;
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mntsize = getmntinfo(&mntbuf, MNT_NOWAIT);
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for (i = 0; i < mntsize; i++) {
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statfsp = &mntbuf[i];
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devname = statfsp->f_mntfromname;
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if (*devname != '/') {
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strcpy(device, _PATH_DEV);
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strcat(device, devname);
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strcpy(statfsp->f_mntfromname, device);
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}
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if (isdev == 0) {
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if (strcmp(name, statfsp->f_mntonname))
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continue;
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return (statfsp);
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}
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if (stat(devname, &mntdevstat) == 0 &&
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mntdevstat.st_rdev == devstat.st_rdev)
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return (statfsp);
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}
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statfsp = NULL;
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return (statfsp);
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}
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#if 0
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/*
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* XXX this code is from NetBSD, but fails in FreeBSD because we
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* don't have blockdevs. I don't think its needed.
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*/
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const char *
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blockcheck(origname)
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const char *origname;
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{
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struct stat stslash, stblock, stchar;
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const char *newname, *raw;
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struct fstab *fsp;
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int retried = 0;
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hot = 0;
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if (stat("/", &stslash) < 0) {
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perror("/");
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printf("Can't stat root\n");
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return (origname);
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}
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newname = origname;
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retry:
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if (stat(newname, &stblock) < 0) {
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perror(newname);
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printf("Can't stat %s\n", newname);
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return (origname);
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}
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if (S_ISBLK(stblock.st_mode)) {
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if (stslash.st_dev == stblock.st_rdev)
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hot++;
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raw = rawname(newname);
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if (stat(raw, &stchar) < 0) {
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perror(raw);
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printf("Can't stat %s\n", raw);
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return (origname);
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}
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if (S_ISCHR(stchar.st_mode)) {
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return (raw);
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} else {
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printf("%s is not a character device\n", raw);
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return (origname);
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}
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} else if (S_ISCHR(stblock.st_mode) && !retried) {
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newname = unrawname(newname);
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retried++;
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goto retry;
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} else if ((fsp = getfsfile(newname)) != 0 && !retried) {
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newname = fsp->fs_spec;
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retried++;
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goto retry;
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}
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/*
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* Not a block or character device, just return name and
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* let the user decide whether to use it.
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*/
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return (origname);
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}
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#endif
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void *
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emalloc(s)
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size_t s;
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{
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void *p;
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p = malloc(s);
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if (p == NULL)
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err(1, "malloc failed");
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return (p);
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}
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void *
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erealloc(p, s)
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void *p;
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size_t s;
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{
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void *q;
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q = realloc(p, s);
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if (q == NULL)
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err(1, "realloc failed");
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return (q);
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}
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char *
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estrdup(s)
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const char *s;
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{
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char *p;
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p = strdup(s);
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if (p == NULL)
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err(1, "strdup failed");
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return (p);
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}
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