49b2a6863b
DEBUG and d_error initialisation into an ERROR macro, which can both trace and set the d_error field. Much a more meaningful thing, I should say.
131 lines
2.9 KiB
C
131 lines
2.9 KiB
C
/*
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* Copyright (c) 2002 Juli Mallett. All rights reserved.
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*
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* This software was written by Juli Mallett <jmallett@FreeBSD.org> for the
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* FreeBSD project. Redistribution and use in source and binary forms, with
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* or without modification, are permitted provided that the following
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* conditions are met:
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*
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* 1. Redistribution of source code must retain the above copyright notice,
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* this list of conditions and the following disclaimer.
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* 2. Redistribution 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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*
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* THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
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* IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
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* WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
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* DISCLAIMED. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT,
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* INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
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* (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
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* 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,
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* STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING
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* IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
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* POSSIBILITY OF SUCH DAMAGE.
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*/
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#include <sys/cdefs.h>
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__FBSDID("$FreeBSD$");
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#include <sys/param.h>
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#include <sys/mount.h>
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#include <sys/disklabel.h>
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#include <sys/stat.h>
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#include <ufs/ufs/ufsmount.h>
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#include <ufs/ufs/dinode.h>
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#include <ufs/ffs/fs.h>
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#include <errno.h>
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#include <fcntl.h>
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#include <stdio.h>
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#include <stdlib.h>
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#include <string.h>
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#include <unistd.h>
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#include <libufs.h>
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struct uufsd *
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ufs_disk_ctor(const char *name)
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{
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struct uufsd *new;
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new = NULL;
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ERROR(new, NULL);
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new = malloc(sizeof(*new));
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if (new == NULL) {
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ERROR(new, "unable to allocate memory for disk");
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return NULL;
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}
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if (ufs_disk_fillout(new, name) == -1) {
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ERROR(new, "could not fill out disk");
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free(new);
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return NULL;
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}
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return new;
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}
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void
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ufs_disk_dtor(struct uufsd **diskp)
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{
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struct uufsd *disk;
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if (diskp != NULL)
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disk = *diskp;
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else
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return;
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ERROR(disk, NULL);
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ufs_disk_close(disk);
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free(disk);
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*diskp = NULL;
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}
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int
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ufs_disk_close(struct uufsd *disk)
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{
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ERROR(disk, NULL);
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close(disk->d_fd);
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if (disk->d_inoblock != NULL) {
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free(disk->d_inoblock);
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disk->d_inoblock = NULL;
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}
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return 0;
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}
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int
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ufs_disk_fillout(struct uufsd *disk, const char *name)
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{
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int fd;
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ERROR(disk, NULL);
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fd = open(name, O_RDONLY);
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if (fd == -1) {
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ERROR(disk, "failed to open disk for reading");
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return -1;
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}
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disk->d_bsize = 1;
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disk->d_fd = fd;
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disk->d_inoblock = NULL;
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disk->d_inomin = 0;
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disk->d_inomax = 0;
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disk->d_name = name;
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disk->d_ufs = 0;
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disk->d_error = NULL;
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if (sbread(disk) == -1) {
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ERROR(disk, "could not read superblock to fill out disk");
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return -1;
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}
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return 0;
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}
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