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C++ ext2_filsys类代码示例

原作者: [db:作者] 来自: [db:来源] 收藏 邀请

本文整理汇总了C++中ext2_filsys类的典型用法代码示例。如果您正苦于以下问题：C++ ext2_filsys类的具体用法？C++ ext2_filsys怎么用？C++ ext2_filsys使用的例子？那么恭喜您, 这里精选的类代码示例或许可以为您提供帮助。



在下文中一共展示了ext2_filsys类的5个代码示例，这些例子默认根据受欢迎程度排序。您可以为喜欢或者感觉有用的代码点赞，您的评价将有助于我们的系统推荐出更棒的C++代码示例。

示例1: ext2fs_close2

errcode_t ext2fs_close2(ext2_filsys fs, int flags)
{
	errcode_t	retval;
	int		meta_blks;
	io_stats stats = 0;

	EXT2_CHECK_MAGIC(fs, EXT2_ET_MAGIC_EXT2FS_FILSYS);

	if (fs->write_bitmaps) {
		retval = fs->write_bitmaps(fs);
		if (retval)
			return retval;
	}
	if (fs->super->s_kbytes_written &&
	    fs->io->manager->get_stats)
		fs->io->manager->get_stats(fs->io, &stats);
	if (stats && stats->bytes_written && (fs->flags & EXT2_FLAG_RW)) {
		fs->super->s_kbytes_written += stats->bytes_written >> 10;
		meta_blks = fs->desc_blocks + 1;
		if (!(fs->flags & EXT2_FLAG_SUPER_ONLY))
			fs->super->s_kbytes_written += meta_blks /
				(fs->blocksize / 1024);
		if ((fs->flags & EXT2_FLAG_DIRTY) == 0)
			fs->flags |= EXT2_FLAG_SUPER_ONLY | EXT2_FLAG_DIRTY;
	}
开发者ID:MIPS，项目名称:external-e2fsprogs，代码行数:25，代码来源:closefs.c


示例2: ext2fs_close

errcode_t ext2fs_close(ext2_filsys fs)
{
    errcode_t	retval;

    EXT2_CHECK_MAGIC(fs, EXT2_ET_MAGIC_EXT2FS_FILSYS);

    if (fs->flags & EXT2_FLAG_DIRTY) {
        retval = ext2fs_flush(fs);
        if (retval)
            return retval;
    }
    if (fs->write_bitmaps) {
        retval = fs->write_bitmaps(fs);
        if (retval)
            return retval;
    }
    ext2fs_free(fs);
    return 0;
}
开发者ID:rocklee104，项目名称:e2fsprogs-1.41.0，代码行数:19，代码来源:closefs.c


示例3: ext2fs_flush2

errcode_t ext2fs_flush2(ext2_filsys fs, int flags)
{
	dgrp_t		i;
	errcode_t	retval;
	unsigned long	fs_state;
	__u32		feature_incompat;
	struct ext2_super_block *super_shadow = 0;
	struct ext2_group_desc *group_shadow = 0;
#ifdef WORDS_BIGENDIAN
	struct ext2_group_desc *gdp;
	dgrp_t		j;
#endif
	char	*group_ptr;
	blk64_t	old_desc_blocks;
	struct ext2fs_numeric_progress_struct progress;

	EXT2_CHECK_MAGIC(fs, EXT2_ET_MAGIC_EXT2FS_FILSYS);

	fs_state = fs->super->s_state;
	feature_incompat = fs->super->s_feature_incompat;

	fs->super->s_wtime = fs->now ? fs->now : time(NULL);
	fs->super->s_block_group_nr = 0;

	/*
	 * If the write_bitmaps() function is present, call it to
	 * flush the bitmaps.  This is done this way so that a simple
	 * program that doesn't mess with the bitmaps doesn't need to
	 * drag in the bitmaps.c code.
	 *
	 * Bitmap checksums live in the group descriptor, so the
	 * bitmaps need to be written before the descriptors.
	 */
	if (fs->write_bitmaps) {
		retval = fs->write_bitmaps(fs);
		if (retval)
			goto errout;
	}

	/* Prepare the group descriptors for writing */
#ifdef WORDS_BIGENDIAN
	retval = EXT2_ET_NO_MEMORY;
	retval = ext2fs_get_mem(SUPERBLOCK_SIZE, &super_shadow);
	if (retval)
		goto errout;
	retval = ext2fs_get_array(fs->desc_blocks, fs->blocksize,
				  &group_shadow);
	if (retval)
		goto errout;
	memcpy(super_shadow, fs->super, sizeof(struct ext2_super_block));
	memcpy(group_shadow, fs->group_desc, (size_t) fs->blocksize *
	       fs->desc_blocks);

	/* swap the group descriptors */
	for (j = 0; j < fs->group_desc_count; j++) {
		gdp = ext2fs_group_desc(fs, group_shadow, j);
		ext2fs_swap_group_desc2(fs, gdp);
	}
#else
	super_shadow = fs->super;
	group_shadow = ext2fs_group_desc(fs, fs->group_desc, 0);
#endif

	/*
	 * Set the state of the FS to be non-valid.  (The state has
	 * already been backed up earlier, and will be restored after
	 * we write out the backup superblocks.)
	 */
	fs->super->s_state &= ~EXT2_VALID_FS;
	ext2fs_clear_feature_journal_needs_recovery(fs->super);

	/*
	 * If this is an external journal device, don't write out the
	 * block group descriptors or any of the backup superblocks
	 */
	if (ext2fs_has_feature_journal_dev(fs->super))
		goto write_primary_superblock_only;

	/*
	 * Write out the master group descriptors, and the backup
	 * superblocks and group descriptors.
	 */
	group_ptr = (char *) group_shadow;
	if (ext2fs_has_feature_meta_bg(fs->super)) {
		old_desc_blocks = fs->super->s_first_meta_bg;
		if (old_desc_blocks > fs->desc_blocks)
			old_desc_blocks = fs->desc_blocks;
	} else
		old_desc_blocks = fs->desc_blocks;

	if (fs->progress_ops && fs->progress_ops->init)
		(fs->progress_ops->init)(fs, &progress, NULL,
					 fs->group_desc_count);


	for (i = 0; i < fs->group_desc_count; i++) {
		blk64_t	super_blk, old_desc_blk, new_desc_blk;

		if (fs->progress_ops && fs->progress_ops->update)
			(fs->progress_ops->update)(fs, &progress, i);
//.........这里部分代码省略.........
开发者ID:MIPS，项目名称:external-e2fsprogs，代码行数:101，代码来源:closefs.c


示例4: ext2fs_flush

errcode_t ext2fs_flush(ext2_filsys fs)
{
	dgrp_t		i;
	errcode_t	retval;
	unsigned long	fs_state;
	__u32		feature_incompat;
	struct ext2_super_block *super_shadow = 0;
	struct ext2_group_desc *group_shadow = 0;
#if defined(WORDS_BIGENDIAN) || (BYTE_ORDER == BIG_ENDIAN)
	struct ext2_group_desc *s, *t;
	dgrp_t		j;
#endif
	char	*group_ptr;
	int	old_desc_blocks;

	EXT2_CHECK_MAGIC(fs, EXT2_ET_MAGIC_EXT2FS_FILSYS);

	fs_state = fs->super->s_state;
	feature_incompat = fs->super->s_feature_incompat;

	fs->super->s_wtime = fs->now ? fs->now : time(NULL);
	fs->super->s_block_group_nr = 0;
#if defined(WORDS_BIGENDIAN) || (BYTE_ORDER == BIG_ENDIAN)
	retval = EXT2_ET_NO_MEMORY;
	retval = ext2fs_get_mem(SUPERBLOCK_SIZE, &super_shadow);
	if (retval)
		goto errout;
	retval = ext2fs_get_array(fs->desc_blocks, fs->blocksize,
				  &group_shadow);
	if (retval)
		goto errout;
	memset(group_shadow, 0, (size_t) fs->blocksize *
	       fs->desc_blocks);

	/* swap the group descriptors */
	for (j=0, s=fs->group_desc, t=group_shadow;
	     j < fs->group_desc_count; j++, t++, s++) {
		*t = *s;
		ext2fs_swap_group_desc(t);
	}
#else
	super_shadow = fs->super;
	group_shadow = fs->group_desc;
#endif

	/*
	 * Set the state of the FS to be non-valid.  (The state has
	 * already been backed up earlier, and will be restored after
	 * we write out the backup superblocks.)
	 */
	fs->super->s_state &= ~EXT2_VALID_FS;
	fs->super->s_feature_incompat &= ~EXT3_FEATURE_INCOMPAT_RECOVER;
#if defined(WORDS_BIGENDIAN) || (BYTE_ORDER == BIG_ENDIAN)
	*super_shadow = *fs->super;
	ext2fs_swap_super(super_shadow);
#endif

	/*
	 * If this is an external journal device, don't write out the
	 * block group descriptors or any of the backup superblocks
	 */
	if (fs->super->s_feature_incompat &
	    EXT3_FEATURE_INCOMPAT_JOURNAL_DEV)
		goto write_primary_superblock_only;

	/*
	 * Write out the master group descriptors, and the backup
	 * superblocks and group descriptors.
	 */
	group_ptr = (char *) group_shadow;
	if (fs->super->s_feature_incompat & EXT2_FEATURE_INCOMPAT_META_BG)
		old_desc_blocks = fs->super->s_first_meta_bg;
	else
		old_desc_blocks = fs->desc_blocks;

	for (i = 0; i < fs->group_desc_count; i++) {
		blk_t	super_blk, old_desc_blk, new_desc_blk;
		int	meta_bg;

		ext2fs_super_and_bgd_loc(fs, i, &super_blk, &old_desc_blk,
					 &new_desc_blk, &meta_bg);

		if (!(fs->flags & EXT2_FLAG_MASTER_SB_ONLY) &&i && super_blk) {
			retval = write_backup_super(fs, i, super_blk,
						    super_shadow);
			if (retval)
				goto errout;
		}
		if (fs->flags & EXT2_FLAG_SUPER_ONLY)
			continue;
		if ((old_desc_blk) &&
		    (!(fs->flags & EXT2_FLAG_MASTER_SB_ONLY) || (i == 0))) {
			retval = io_channel_write_blk(fs->io,
			      old_desc_blk, old_desc_blocks, group_ptr);
			if (retval)
				goto errout;
		}
		if (new_desc_blk) {
			retval = io_channel_write_blk(fs->io, new_desc_blk,
				1, group_ptr + (meta_bg*fs->blocksize));
//.........这里部分代码省略.........
开发者ID:huangwenhua，项目名称:fuse-ext2-fakeFS，代码行数:101，代码来源:closefs.c


示例5: ext2fs_flush

errcode_t ext2fs_flush(ext2_filsys fs)
{
	dgrp_t		i;
	errcode_t	retval;
	unsigned long	fs_state;
	__u32		feature_incompat;
	struct ext2_super_block *super_shadow = 0;
	struct ext2_group_desc *group_shadow = 0;
#ifdef WORDS_BIGENDIAN
	struct ext2_group_desc *s, *t;
	dgrp_t		j;
#endif
	char	*group_ptr;
	int	old_desc_blocks;

	EXT2_CHECK_MAGIC(fs, EXT2_ET_MAGIC_EXT2FS_FILSYS);

	fs_state = fs->super->s_state;
	feature_incompat = fs->super->s_feature_incompat;

	fs->super->s_wtime = fs->now ? fs->now : time(NULL);
	fs->super->s_block_group_nr = 0;
#ifdef WORDS_BIGENDIAN
	retval = EXT2_ET_NO_MEMORY;
	retval = ext2fs_get_mem(SUPERBLOCK_SIZE, &super_shadow);
	if (retval)
		goto errout;
	retval = ext2fs_get_array(fs->desc_blocks, fs->blocksize,
				  &group_shadow);
	if (retval)
		goto errout;
	memset(group_shadow, 0, (size_t) fs->blocksize *
	       fs->desc_blocks);

	
	for (j=0, s=fs->group_desc, t=group_shadow;
	     j < fs->group_desc_count; j++, t++, s++) {
		*t = *s;
		ext2fs_swap_group_desc(t);
	}
#else
	super_shadow = fs->super;
	group_shadow = fs->group_desc;
#endif

	fs->super->s_state &= ~EXT2_VALID_FS;
	fs->super->s_feature_incompat &= ~EXT3_FEATURE_INCOMPAT_RECOVER;
#ifdef WORDS_BIGENDIAN
	*super_shadow = *fs->super;
	ext2fs_swap_super(super_shadow);
#endif

	if (fs->super->s_feature_incompat &
	    EXT3_FEATURE_INCOMPAT_JOURNAL_DEV)
		goto write_primary_superblock_only;

	group_ptr = (char *) group_shadow;
	if (fs->super->s_feature_incompat & EXT2_FEATURE_INCOMPAT_META_BG)
		old_desc_blocks = fs->super->s_first_meta_bg;
	else
		old_desc_blocks = fs->desc_blocks;

	for (i = 0; i < fs->group_desc_count; i++) {
		blk_t	super_blk, old_desc_blk, new_desc_blk;
		int	meta_bg;

		ext2fs_super_and_bgd_loc(fs, i, &super_blk, &old_desc_blk,
					 &new_desc_blk, &meta_bg);

		if (!(fs->flags & EXT2_FLAG_MASTER_SB_ONLY) &&i && super_blk) {
			retval = write_backup_super(fs, i, super_blk,
						    super_shadow);
			if (retval)
				goto errout;
		}
		if (fs->flags & EXT2_FLAG_SUPER_ONLY)
			continue;
		if ((old_desc_blk) &&
		    (!(fs->flags & EXT2_FLAG_MASTER_SB_ONLY) || (i == 0))) {
			retval = io_channel_write_blk(fs->io,
			      old_desc_blk, old_desc_blocks, group_ptr);
			if (retval)
				goto errout;
		}
		if (new_desc_blk) {
			retval = io_channel_write_blk(fs->io, new_desc_blk,
				1, group_ptr + (meta_bg*fs->blocksize));
			if (retval)
				goto errout;
		}
	}

	if (fs->write_bitmaps) {
		retval = fs->write_bitmaps(fs);
		if (retval)
			goto errout;
	}

write_primary_superblock_only:

//.........这里部分代码省略.........
开发者ID:qtekfun，项目名称:htcDesire820Kernel，代码行数:101，代码来源:closefs.c



注：本文中的ext2_filsys类示例由纯净天空整理自Github/MSDocs等源码及文档管理平台，相关代码片段筛选自各路编程大神贡献的开源项目，源码版权归原作者所有，传播和使用请参考对应项目的License；未经允许，请勿转载。

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