return r;
}
-int ext4_fill_raw_inode(const char *path, uint32_t *ret_ino,
- struct ext4_inode *inode)
-{
- int r;
- ext4_file f;
- struct ext4_inode_ref inode_ref;
- struct ext4_mountpoint *mp = ext4_get_mount(path);
- uint32_t ino;
-
- if (!mp)
- return ENOENT;
-
- EXT4_MP_LOCK(mp);
-
- r = ext4_generic_open2(&f, path, O_RDONLY, EXT4_DE_UNKNOWN, NULL, NULL);
- if (r != EOK) {
- EXT4_MP_UNLOCK(mp);
- return r;
- }
-
- ino = f.inode;
- ext4_fclose(&f);
-
- /*Load parent*/
- r = ext4_fs_get_inode_ref(&mp->fs, ino, &inode_ref);
- if (r != EOK) {
- EXT4_MP_UNLOCK(mp);
- return r;
- }
-
- memcpy(inode, inode_ref.inode, sizeof(struct ext4_inode));
- ext4_fs_put_inode_ref(&inode_ref);
- EXT4_MP_UNLOCK(mp);
-
- if (ret_ino)
- *ret_ino = ino;
-
- return r;
-}
-
-int ext4_fopen(ext4_file *f, const char *path, const char *flags)
+int ext4_fopen(ext4_file *file, const char *path, const char *flags)
{
struct ext4_mountpoint *mp = ext4_get_mount(path);
int r;
EXT4_MP_LOCK(mp);
ext4_block_cache_write_back(mp->fs.bdev, 1);
- r = ext4_generic_open(f, path, flags, true, 0, 0);
+ r = ext4_generic_open(file, path, flags, true, 0, 0);
ext4_block_cache_write_back(mp->fs.bdev, 0);
EXT4_MP_UNLOCK(mp);
return r;
}
-int ext4_fopen2(ext4_file *f, const char *path, int flags)
+int ext4_fopen2(ext4_file *file, const char *path, int flags)
{
struct ext4_mountpoint *mp = ext4_get_mount(path);
int r;
EXT4_MP_LOCK(mp);
ext4_block_cache_write_back(mp->fs.bdev, 1);
- r = ext4_generic_open2(f, path, flags, filetype, NULL, NULL);
+ r = ext4_generic_open2(file, path, flags, filetype, NULL, NULL);
ext4_block_cache_write_back(mp->fs.bdev, 0);
EXT4_MP_UNLOCK(mp);
return r;
}
-int ext4_fclose(ext4_file *f)
+int ext4_fclose(ext4_file *file)
{
- ext4_assert(f && f->mp);
+ ext4_assert(file && file->mp);
- f->mp = 0;
- f->flags = 0;
- f->inode = 0;
- f->fpos = f->fsize = 0;
+ file->mp = 0;
+ file->flags = 0;
+ file->inode = 0;
+ file->fpos = file->fsize = 0;
return EOK;
}
-static int ext4_ftruncate_no_lock(ext4_file *f, uint64_t size)
+static int ext4_ftruncate_no_lock(ext4_file *file, uint64_t size)
{
struct ext4_inode_ref ref;
int r;
- r = ext4_fs_get_inode_ref(&f->mp->fs, f->inode, &ref);
+ r = ext4_fs_get_inode_ref(&file->mp->fs, file->inode, &ref);
if (r != EOK) {
- EXT4_MP_UNLOCK(f->mp);
+ EXT4_MP_UNLOCK(file->mp);
return r;
}
/*Sync file size*/
- f->fsize = ext4_inode_get_size(&f->mp->fs.sb, ref.inode);
- if (f->fsize <= size) {
+ file->fsize = ext4_inode_get_size(&file->mp->fs.sb, ref.inode);
+ if (file->fsize <= size) {
r = EOK;
goto Finish;
}
/*Start write back cache mode.*/
- r = ext4_block_cache_write_back(f->mp->fs.bdev, 1);
+ r = ext4_block_cache_write_back(file->mp->fs.bdev, 1);
if (r != EOK)
goto Finish;
- r = ext4_trunc_inode(f->mp, ref.index, size);
+ r = ext4_trunc_inode(file->mp, ref.index, size);
if (r != EOK)
goto Finish;
- f->fsize = size;
- if (f->fpos > size)
- f->fpos = size;
+ file->fsize = size;
+ if (file->fpos > size)
+ file->fpos = size;
/*Stop write back cache mode*/
- ext4_block_cache_write_back(f->mp->fs.bdev, 0);
+ ext4_block_cache_write_back(file->mp->fs.bdev, 0);
if (r != EOK)
goto Finish;
return r;
}
-int ext4_fread(ext4_file *f, void *buf, size_t size, size_t *rcnt)
+int ext4_fread(ext4_file *file, void *buf, size_t size, size_t *rcnt)
{
uint32_t unalg;
uint32_t iblock_idx;
int r;
struct ext4_inode_ref ref;
- ext4_assert(f && f->mp);
+ ext4_assert(file && file->mp);
- if (f->flags & O_WRONLY)
+ if (file->flags & O_WRONLY)
return EPERM;
if (!size)
return EOK;
- EXT4_MP_LOCK(f->mp);
+ EXT4_MP_LOCK(file->mp);
- struct ext4_fs *const fs = &f->mp->fs;
- struct ext4_sblock *const sb = &f->mp->fs.sb;
+ struct ext4_fs *const fs = &file->mp->fs;
+ struct ext4_sblock *const sb = &file->mp->fs.sb;
if (rcnt)
*rcnt = 0;
- r = ext4_fs_get_inode_ref(fs, f->inode, &ref);
+ r = ext4_fs_get_inode_ref(fs, file->inode, &ref);
if (r != EOK) {
- EXT4_MP_UNLOCK(f->mp);
+ EXT4_MP_UNLOCK(file->mp);
return r;
}
/*Sync file size*/
- f->fsize = ext4_inode_get_size(sb, ref.inode);
+ file->fsize = ext4_inode_get_size(sb, ref.inode);
block_size = ext4_sb_get_block_size(sb);
- size = ((uint64_t)size > (f->fsize - f->fpos))
- ? ((size_t)(f->fsize - f->fpos)) : size;
+ size = ((uint64_t)size > (file->fsize - file->fpos))
+ ? ((size_t)(file->fsize - file->fpos)) : size;
- iblock_idx = (uint32_t)((f->fpos) / block_size);
- iblock_last = (uint32_t)((f->fpos + size) / block_size);
- unalg = (f->fpos) % block_size;
+ iblock_idx = (uint32_t)((file->fpos) / block_size);
+ iblock_last = (uint32_t)((file->fpos + size) / block_size);
+ unalg = (file->fpos) % block_size;
/*If the size of symlink is smaller than 60 bytes*/
bool softlink;
softlink = ext4_inode_is_type(sb, ref.inode, EXT4_INODE_MODE_SOFTLINK);
- if (softlink && f->fsize < sizeof(ref.inode->blocks)
+ if (softlink && file->fsize < sizeof(ref.inode->blocks)
&& !ext4_inode_get_blocks_count(sb, ref.inode)) {
char *content = (char *)ref.inode->blocks;
- if (f->fpos < f->fsize) {
+ if (file->fpos < file->fsize) {
size_t len = size;
- if (unalg + size > (uint32_t)f->fsize)
- len = (uint32_t)f->fsize - unalg;
+ if (unalg + size > (uint32_t)file->fsize)
+ len = (uint32_t)file->fsize - unalg;
memcpy(buf, content + unalg, len);
if (rcnt)
*rcnt = len;
/* Do we get an unwritten range? */
if (fblock != 0) {
uint64_t off = fblock * block_size + unalg;
- r = ext4_block_readbytes(f->mp->fs.bdev, off, u8_buf, len);
+ r = ext4_block_readbytes(file->mp->fs.bdev, off, u8_buf, len);
if (r != EOK)
goto Finish;
u8_buf += len;
size -= len;
- f->fpos += len;
+ file->fpos += len;
if (rcnt)
*rcnt += len;
fblock_count++;
}
- r = ext4_blocks_get_direct(f->mp->fs.bdev, u8_buf, fblock_start,
+ r = ext4_blocks_get_direct(file->mp->fs.bdev, u8_buf, fblock_start,
fblock_count);
if (r != EOK)
goto Finish;
size -= block_size * fblock_count;
u8_buf += block_size * fblock_count;
- f->fpos += block_size * fblock_count;
+ file->fpos += block_size * fblock_count;
if (rcnt)
*rcnt += block_size * fblock_count;
goto Finish;
off = fblock * block_size;
- r = ext4_block_readbytes(f->mp->fs.bdev, off, u8_buf, size);
+ r = ext4_block_readbytes(file->mp->fs.bdev, off, u8_buf, size);
if (r != EOK)
goto Finish;
- f->fpos += size;
+ file->fpos += size;
if (rcnt)
*rcnt += size;
Finish:
ext4_fs_put_inode_ref(&ref);
- EXT4_MP_UNLOCK(f->mp);
+ EXT4_MP_UNLOCK(file->mp);
return r;
}
-int ext4_fwrite(ext4_file *f, const void *buf, size_t size, size_t *wcnt)
+int ext4_fwrite(ext4_file *file, const void *buf, size_t size, size_t *wcnt)
{
uint32_t unalg;
uint32_t iblk_idx;
const uint8_t *u8_buf = buf;
int r, rr = EOK;
- ext4_assert(f && f->mp);
+ ext4_assert(file && file->mp);
- if (f->mp->fs.read_only)
+ if (file->mp->fs.read_only)
return EROFS;
- if (f->flags & O_RDONLY)
+ if (file->flags & O_RDONLY)
return EPERM;
if (!size)
return EOK;
- EXT4_MP_LOCK(f->mp);
- ext4_trans_start(f->mp);
+ EXT4_MP_LOCK(file->mp);
+ ext4_trans_start(file->mp);
- struct ext4_fs *const fs = &f->mp->fs;
- struct ext4_sblock *const sb = &f->mp->fs.sb;
+ struct ext4_fs *const fs = &file->mp->fs;
+ struct ext4_sblock *const sb = &file->mp->fs.sb;
if (wcnt)
*wcnt = 0;
- r = ext4_fs_get_inode_ref(fs, f->inode, &ref);
+ r = ext4_fs_get_inode_ref(fs, file->inode, &ref);
if (r != EOK) {
- ext4_trans_abort(f->mp);
- EXT4_MP_UNLOCK(f->mp);
+ ext4_trans_abort(file->mp);
+ EXT4_MP_UNLOCK(file->mp);
return r;
}
/*Sync file size*/
- f->fsize = ext4_inode_get_size(sb, ref.inode);
+ file->fsize = ext4_inode_get_size(sb, ref.inode);
block_size = ext4_sb_get_block_size(sb);
- iblock_last = (uint32_t)((f->fpos + size) / block_size);
- iblk_idx = (uint32_t)(f->fpos / block_size);
- ifile_blocks = (uint32_t)((f->fsize + block_size - 1) / block_size);
+ iblock_last = (uint32_t)((file->fpos + size) / block_size);
+ iblk_idx = (uint32_t)(file->fpos / block_size);
+ ifile_blocks = (uint32_t)((file->fsize + block_size - 1) / block_size);
- unalg = (f->fpos) % block_size;
+ unalg = (file->fpos) % block_size;
if (unalg) {
size_t len = size;
goto Finish;
off = fblk * block_size + unalg;
- r = ext4_block_writebytes(f->mp->fs.bdev, off, u8_buf, len);
+ r = ext4_block_writebytes(file->mp->fs.bdev, off, u8_buf, len);
if (r != EOK)
goto Finish;
u8_buf += len;
size -= len;
- f->fpos += len;
+ file->fpos += len;
if (wcnt)
*wcnt += len;
}
/*Start write back cache mode.*/
- r = ext4_block_cache_write_back(f->mp->fs.bdev, 1);
+ r = ext4_block_cache_write_back(file->mp->fs.bdev, 1);
if (r != EOK)
goto Finish;
fblock_count++;
}
- r = ext4_blocks_set_direct(f->mp->fs.bdev, u8_buf, fblock_start,
+ r = ext4_blocks_set_direct(file->mp->fs.bdev, u8_buf, fblock_start,
fblock_count);
if (r != EOK)
break;
size -= block_size * fblock_count;
u8_buf += block_size * fblock_count;
- f->fpos += block_size * fblock_count;
+ file->fpos += block_size * fblock_count;
if (wcnt)
*wcnt += block_size * fblock_count;
}
/*Stop write back cache mode*/
- ext4_block_cache_write_back(f->mp->fs.bdev, 0);
+ ext4_block_cache_write_back(file->mp->fs.bdev, 0);
if (r != EOK)
goto Finish;
}
off = fblk * block_size;
- r = ext4_block_writebytes(f->mp->fs.bdev, off, u8_buf, size);
+ r = ext4_block_writebytes(file->mp->fs.bdev, off, u8_buf, size);
if (r != EOK)
goto Finish;
- f->fpos += size;
+ file->fpos += size;
if (wcnt)
*wcnt += size;
}
out_fsize:
- if (f->fpos > f->fsize) {
- f->fsize = f->fpos;
- ext4_inode_set_size(ref.inode, f->fsize);
+ if (file->fpos > file->fsize) {
+ file->fsize = file->fpos;
+ ext4_inode_set_size(ref.inode, file->fsize);
ref.dirty = true;
}
r = ext4_fs_put_inode_ref(&ref);
if (r != EOK)
- ext4_trans_abort(f->mp);
+ ext4_trans_abort(file->mp);
else
- ext4_trans_stop(f->mp);
+ ext4_trans_stop(file->mp);
- EXT4_MP_UNLOCK(f->mp);
+ EXT4_MP_UNLOCK(file->mp);
return r;
}
-int ext4_fseek(ext4_file *f, uint64_t offset, uint32_t origin)
+int ext4_fseek(ext4_file *file, uint64_t offset, uint32_t origin)
{
switch (origin) {
case SEEK_SET:
- if (offset > f->fsize)
+ if (offset > file->fsize)
return EINVAL;
- f->fpos = offset;
+ file->fpos = offset;
return EOK;
case SEEK_CUR:
- if ((offset + f->fpos) > f->fsize)
+ if ((offset + file->fpos) > file->fsize)
return EINVAL;
- f->fpos += offset;
+ file->fpos += offset;
return EOK;
case SEEK_END:
- if (offset > f->fsize)
+ if (offset > file->fsize)
return EINVAL;
- f->fpos = f->fsize - offset;
+ file->fpos = file->fsize - offset;
return EOK;
}
return EINVAL;
}
-uint64_t ext4_ftell(ext4_file *f)
+uint64_t ext4_ftell(ext4_file *file)
{
- return f->fpos;
+ return file->fpos;
}
-uint64_t ext4_fsize(ext4_file *f)
+uint64_t ext4_fsize(ext4_file *file)
{
- return f->fsize;
+ return file->fsize;
}
return r;
}
+
+int ext4_raw_inode_fill(const char *path, uint32_t *ret_ino,
+ struct ext4_inode *inode)
+{
+ int r;
+ ext4_file f;
+ struct ext4_inode_ref inode_ref;
+ struct ext4_mountpoint *mp = ext4_get_mount(path);
+
+ if (!mp)
+ return ENOENT;
+
+ EXT4_MP_LOCK(mp);
+
+ r = ext4_generic_open2(&f, path, O_RDONLY, EXT4_DE_UNKNOWN, NULL, NULL);
+ if (r != EOK) {
+ EXT4_MP_UNLOCK(mp);
+ return r;
+ }
+
+ /*Load parent*/
+ r = ext4_fs_get_inode_ref(&mp->fs, f.inode, &inode_ref);
+ if (r != EOK) {
+ EXT4_MP_UNLOCK(mp);
+ return r;
+ }
+
+ if (ret_ino)
+ *ret_ino = f.inode;
+
+ memcpy(inode, inode_ref.inode, sizeof(struct ext4_inode));
+ ext4_fs_put_inode_ref(&inode_ref);
+ EXT4_MP_UNLOCK(mp);
+
+ return r;
+}
+
int ext4_mode_set(const char *path, uint32_t mode)
{
int r;
}
int ext4_setxattr(const char *path, const char *name, size_t name_len,
- const void *data, size_t data_size, bool replace __unused)
+ const void *data, size_t data_size)
{
bool found;
int r = EOK;
return r;
}
-int ext4_dir_open(ext4_dir *d, const char *path)
+int ext4_dir_open(ext4_dir *dir, const char *path)
{
struct ext4_mountpoint *mp = ext4_get_mount(path);
int r;
return ENOENT;
EXT4_MP_LOCK(mp);
- r = ext4_generic_open(&d->f, path, "r", false, 0, 0);
- d->next_off = 0;
+ r = ext4_generic_open(&dir->f, path, "r", false, 0, 0);
+ dir->next_off = 0;
EXT4_MP_UNLOCK(mp);
return r;
}
-int ext4_dir_close(ext4_dir *d)
+int ext4_dir_close(ext4_dir *dir)
{
- return ext4_fclose(&d->f);
+ return ext4_fclose(&dir->f);
}
-const ext4_direntry *ext4_dir_entry_next(ext4_dir *d)
+const ext4_direntry *ext4_dir_entry_next(ext4_dir *dir)
{
#define EXT4_DIR_ENTRY_OFFSET_TERM (uint64_t)(-1)
int r;
uint16_t name_length;
ext4_direntry *de = 0;
- struct ext4_inode_ref dir;
+ struct ext4_inode_ref dir_inode;
struct ext4_dir_iter it;
- EXT4_MP_LOCK(d->f.mp);
+ EXT4_MP_LOCK(dir->f.mp);
- if (d->next_off == EXT4_DIR_ENTRY_OFFSET_TERM) {
- EXT4_MP_UNLOCK(d->f.mp);
+ if (dir->next_off == EXT4_DIR_ENTRY_OFFSET_TERM) {
+ EXT4_MP_UNLOCK(dir->f.mp);
return 0;
}
- r = ext4_fs_get_inode_ref(&d->f.mp->fs, d->f.inode, &dir);
+ r = ext4_fs_get_inode_ref(&dir->f.mp->fs, dir->f.inode, &dir_inode);
if (r != EOK) {
goto Finish;
}
- r = ext4_dir_iterator_init(&it, &dir, d->next_off);
+ r = ext4_dir_iterator_init(&it, &dir_inode, dir->next_off);
if (r != EOK) {
- ext4_fs_put_inode_ref(&dir);
+ ext4_fs_put_inode_ref(&dir_inode);
goto Finish;
}
- memset(&d->de.name, 0, sizeof(d->de.name));
- name_length = ext4_dir_en_get_name_len(&d->f.mp->fs.sb,
+ memset(&dir->de.name, 0, sizeof(dir->de.name));
+ name_length = ext4_dir_en_get_name_len(&dir->f.mp->fs.sb,
it.curr);
- memcpy(&d->de.name, it.curr->name, name_length);
+ memcpy(&dir->de.name, it.curr->name, name_length);
/* Directly copying the content isn't safe for Big-endian targets*/
- d->de.inode = ext4_dir_en_get_inode(it.curr);
- d->de.entry_length = ext4_dir_en_get_entry_len(it.curr);
- d->de.name_length = name_length;
- d->de.inode_type = ext4_dir_en_get_inode_type(&d->f.mp->fs.sb,
+ dir->de.inode = ext4_dir_en_get_inode(it.curr);
+ dir->de.entry_length = ext4_dir_en_get_entry_len(it.curr);
+ dir->de.name_length = name_length;
+ dir->de.inode_type = ext4_dir_en_get_inode_type(&dir->f.mp->fs.sb,
it.curr);
- de = &d->de;
+ de = &dir->de;
ext4_dir_iterator_next(&it);
- d->next_off = it.curr ? it.curr_off : EXT4_DIR_ENTRY_OFFSET_TERM;
+ dir->next_off = it.curr ? it.curr_off : EXT4_DIR_ENTRY_OFFSET_TERM;
ext4_dir_iterator_fini(&it);
- ext4_fs_put_inode_ref(&dir);
+ ext4_fs_put_inode_ref(&dir_inode);
Finish:
- EXT4_MP_UNLOCK(d->f.mp);
+ EXT4_MP_UNLOCK(dir->f.mp);
return de;
}
-void ext4_dir_entry_rewind(ext4_dir *d)
+void ext4_dir_entry_rewind(ext4_dir *dir)
{
- d->next_off = 0;
+ dir->next_off = 0;
}
/**
projects / lwext4.git / blobdiff