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fstypes.c revision 1.4 
      1 /*	$NetBSD: fstypes.c,v 1.4 2002/05/15 02:17:06 lukem Exp $	*/
      2 
      3 /*-
      4  * Copyright (c) 2002 The NetBSD Foundation, Inc.
      5  * All rights reserved.
      6  *
      7  * This code is derived from software contributed to The NetBSD Foundation
      8  * by Matt Fredette and Luke Mewburn.
      9  *
     10  * Redistribution and use in source and binary forms, with or without
     11  * modification, are permitted provided that the following conditions
     12  * are met:
     13  * 1. Redistributions of source code must retain the above copyright
     14  *    notice, this list of conditions and the following disclaimer.
     15  * 2. Redistributions in binary form must reproduce the above copyright
     16  *    notice, this list of conditions and the following disclaimer in the
     17  *    documentation and/or other materials provided with the distribution.
     18  * 3. All advertising materials mentioning features or use of this software
     19  *    must display the following acknowledgement:
     20  *	This product includes software developed by the NetBSD
     21  *	Foundation, Inc. and its contributors.
     22  * 4. Neither the name of The NetBSD Foundation nor the names of its
     23  *    contributors may be used to endorse or promote products derived
     24  *    from this software without specific prior written permission.
     25  *
     26  * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS
     27  * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
     28  * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
     29  * PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS
     30  * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
     31  * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
     32  * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
     33  * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
     34  * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
     35  * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
     36  * POSSIBILITY OF SUCH DAMAGE.
     37  */
     38 
     39 #include <sys/types.h>
     40 
     41 #include <assert.h>
     42 #include <err.h>
     43 #include <stdio.h>
     44 
     45 #include "installboot.h"
     46 
     47 struct ib_fs fstypes[] = {
     48 	{ "ffs",	ffs_match,	ffs_findstage2	},
     49 	{ "raw",	raw_match,	raw_findstage2	},
     50 	{ 0, 0, 0 }
     51 };
     52 
     53 int
     54 hardcode_stage2(ib_params *params, uint32_t *maxblk, ib_block *blocks)
     55 {
     56 	struct stat	s2sb;
     57 	uint32_t	nblk, i;
     58 
     59 	assert(params != NULL);
     60 	assert(params->stage2 != NULL);
     61 	assert(maxblk != NULL);
     62 	assert(blocks != NULL);
     63 	assert((params->flags & IB_STAGE2START) != 0);
     64 	assert(params->fstype != NULL);
     65 	assert(params->fstype->blocksize != 0);
     66 
     67 	if (stat(params->stage2, &s2sb) == -1) {
     68 		warn("Examining `%s'", params->stage2);
     69 		return (0);
     70 	}
     71 	if (!S_ISREG(s2sb.st_mode)) {
     72 		warnx("`%s' must be a regular file", params->stage2);
     73 		return (0);
     74 	}
     75 
     76 	nblk = s2sb.st_size / params->fstype->blocksize;
     77 	if (s2sb.st_size % params->fstype->blocksize != 0)
     78 		nblk++;
     79 #if 0
     80 	fprintf(stderr, "for %s got size %lld blksize %u blocks %u\n",
     81 	    params->stage2, s2sb.st_size, params->fstype->blocksize, nblk);
     82 #endif
     83 	if (nblk > *maxblk) {
     84                 warnx("Secondary bootstrap `%s' has too many blocks "
     85                     "(calculated %u, maximum %u)\n",
     86 		    params->stage2, nblk, *maxblk);
     87                 return (0);
     88         }
     89 
     90 	for (i = 0; i < nblk; i++) {
     91 		blocks[i].block = params->s2start +
     92 		    i * (params->fstype->blocksize / 512);
     93 		blocks[i].blocksize = params->fstype->blocksize;
     94 	}
     95 	*maxblk = nblk;
     96 
     97 	return (1);
     98 }
     99 
    100 
    101 int
    102 raw_match(ib_params *params)
    103 {
    104 
    105 	assert(params != NULL);
    106 	assert(params->fstype != NULL);
    107 
    108 	params->fstype->blocksize = 8192;		// XXX: hardcode
    109 	return (1);		/* can always write to a "raw" file system */
    110 }
    111 
    112 int
    113 raw_findstage2(ib_params *params, uint32_t *maxblk, ib_block *blocks)
    114 {
    115 
    116 	assert(params != NULL);
    117 	assert(params->stage2 != NULL);
    118 	assert(maxblk != NULL);
    119 	assert(blocks != NULL);
    120 
    121 	if ((params->flags & IB_STAGE2START) == 0) {
    122 		warnx("Need `-B bno' for raw file systems");
    123 		return (0);
    124 	}
    125 	return (hardcode_stage2(params, maxblk, blocks));
    126 }
    127