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https://github.com/sheumann/hush.git
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203 lines
4.6 KiB
C
203 lines
4.6 KiB
C
/*
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* e2fsck.c - a consistency checker for the new extended file system.
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*
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* Copyright (C) 1993, 1994, 1995, 1996, 1997 Theodore Ts'o.
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*
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* %Begin-Header%
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* This file may be redistributed under the terms of the GNU Public
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* License.
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* %End-Header%
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*/
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#include <errno.h>
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#include "e2fsck.h"
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#include "problem.h"
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/*
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* This function allocates an e2fsck context
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*/
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errcode_t e2fsck_allocate_context(e2fsck_t *ret)
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{
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e2fsck_t context;
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errcode_t retval;
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retval = ext2fs_get_mem(sizeof(struct e2fsck_struct), &context);
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if (retval)
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return retval;
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memset(context, 0, sizeof(struct e2fsck_struct));
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context->process_inode_size = 256;
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context->ext_attr_ver = 2;
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*ret = context;
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return 0;
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}
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/*
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* This function resets an e2fsck context; it is called when e2fsck
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* needs to be restarted.
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*/
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errcode_t e2fsck_reset_context(e2fsck_t ctx)
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{
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ctx->flags = 0;
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ctx->lost_and_found = 0;
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ctx->bad_lost_and_found = 0;
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if (ctx->inode_used_map) {
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ext2fs_free_inode_bitmap(ctx->inode_used_map);
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ctx->inode_used_map = 0;
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}
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if (ctx->inode_dir_map) {
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ext2fs_free_inode_bitmap(ctx->inode_dir_map);
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ctx->inode_dir_map = 0;
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}
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if (ctx->inode_reg_map) {
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ext2fs_free_inode_bitmap(ctx->inode_reg_map);
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ctx->inode_reg_map = 0;
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}
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if (ctx->block_found_map) {
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ext2fs_free_block_bitmap(ctx->block_found_map);
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ctx->block_found_map = 0;
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}
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if (ctx->inode_link_info) {
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ext2fs_free_icount(ctx->inode_link_info);
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ctx->inode_link_info = 0;
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}
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if (ctx->journal_io) {
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if (ctx->fs && ctx->fs->io != ctx->journal_io)
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io_channel_close(ctx->journal_io);
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ctx->journal_io = 0;
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}
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if (ctx->fs && ctx->fs->dblist) {
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ext2fs_free_dblist(ctx->fs->dblist);
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ctx->fs->dblist = 0;
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}
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e2fsck_free_dir_info(ctx);
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#ifdef ENABLE_HTREE
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e2fsck_free_dx_dir_info(ctx);
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#endif
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if (ctx->refcount) {
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ea_refcount_free(ctx->refcount);
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ctx->refcount = 0;
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}
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if (ctx->refcount_extra) {
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ea_refcount_free(ctx->refcount_extra);
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ctx->refcount_extra = 0;
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}
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if (ctx->block_dup_map) {
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ext2fs_free_block_bitmap(ctx->block_dup_map);
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ctx->block_dup_map = 0;
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}
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if (ctx->block_ea_map) {
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ext2fs_free_block_bitmap(ctx->block_ea_map);
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ctx->block_ea_map = 0;
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}
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if (ctx->inode_bb_map) {
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ext2fs_free_inode_bitmap(ctx->inode_bb_map);
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ctx->inode_bb_map = 0;
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}
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if (ctx->inode_bad_map) {
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ext2fs_free_inode_bitmap(ctx->inode_bad_map);
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ctx->inode_bad_map = 0;
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}
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if (ctx->inode_imagic_map) {
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ext2fs_free_inode_bitmap(ctx->inode_imagic_map);
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ctx->inode_imagic_map = 0;
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}
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if (ctx->dirs_to_hash) {
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ext2fs_u32_list_free(ctx->dirs_to_hash);
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ctx->dirs_to_hash = 0;
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}
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/*
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* Clear the array of invalid meta-data flags
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*/
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if (ctx->invalid_inode_bitmap_flag) {
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ext2fs_free_mem(&ctx->invalid_inode_bitmap_flag);
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ctx->invalid_inode_bitmap_flag = 0;
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}
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if (ctx->invalid_block_bitmap_flag) {
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ext2fs_free_mem(&ctx->invalid_block_bitmap_flag);
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ctx->invalid_block_bitmap_flag = 0;
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}
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if (ctx->invalid_inode_table_flag) {
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ext2fs_free_mem(&ctx->invalid_inode_table_flag);
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ctx->invalid_inode_table_flag = 0;
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}
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/* Clear statistic counters */
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ctx->fs_directory_count = 0;
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ctx->fs_regular_count = 0;
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ctx->fs_blockdev_count = 0;
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ctx->fs_chardev_count = 0;
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ctx->fs_links_count = 0;
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ctx->fs_symlinks_count = 0;
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ctx->fs_fast_symlinks_count = 0;
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ctx->fs_fifo_count = 0;
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ctx->fs_total_count = 0;
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ctx->fs_badblocks_count = 0;
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ctx->fs_sockets_count = 0;
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ctx->fs_ind_count = 0;
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ctx->fs_dind_count = 0;
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ctx->fs_tind_count = 0;
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ctx->fs_fragmented = 0;
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ctx->large_files = 0;
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/* Reset the superblock to the user's requested value */
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ctx->superblock = ctx->use_superblock;
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return 0;
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}
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void e2fsck_free_context(e2fsck_t ctx)
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{
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if (!ctx)
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return;
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e2fsck_reset_context(ctx);
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if (ctx->blkid)
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blkid_put_cache(ctx->blkid);
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ext2fs_free_mem(&ctx);
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}
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/*
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* This function runs through the e2fsck passes and calls them all,
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* returning restart, abort, or cancel as necessary...
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*/
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typedef void (*pass_t)(e2fsck_t ctx);
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pass_t e2fsck_passes[] = {
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e2fsck_pass1, e2fsck_pass2, e2fsck_pass3, e2fsck_pass4,
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e2fsck_pass5, 0 };
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#define E2F_FLAG_RUN_RETURN (E2F_FLAG_SIGNAL_MASK|E2F_FLAG_RESTART)
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int e2fsck_run(e2fsck_t ctx)
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{
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int i;
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pass_t e2fsck_pass;
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#ifdef HAVE_SETJMP_H
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if (setjmp(ctx->abort_loc)) {
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ctx->flags &= ~E2F_FLAG_SETJMP_OK;
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return (ctx->flags & E2F_FLAG_RUN_RETURN);
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}
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ctx->flags |= E2F_FLAG_SETJMP_OK;
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#endif
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for (i=0; (e2fsck_pass = e2fsck_passes[i]); i++) {
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if (ctx->flags & E2F_FLAG_RUN_RETURN)
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break;
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e2fsck_pass(ctx);
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if (ctx->progress)
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(void) (ctx->progress)(ctx, 0, 0, 0);
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}
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ctx->flags &= ~E2F_FLAG_SETJMP_OK;
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if (ctx->flags & E2F_FLAG_RUN_RETURN)
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return (ctx->flags & E2F_FLAG_RUN_RETURN);
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return 0;
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}
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