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, 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;
}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;
}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.........
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.........
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.........