int fuse_to_ext4_acl(const acl_ea_header *facl, size_t facl_sz,
ext4_acl_header **eacl, size_t *eacl_sz)
{
int i, facl_count;
ext4_acl_header *h;
size_t h_sz;
ext4_acl_entry *e;
acl_ea_entry *a;
unsigned char *hptr;
int err = 0;
facl_count = acl_ea_count(facl_sz);
h_sz = ext4_acl_size(facl_count);
if (facl_count < 0 || facl->a_version != ACL_EA_VERSION)
return -EINVAL;
h = malloc(h_sz);
if (!h)
return -ENOMEM;
h->a_version = ext2fs_cpu_to_le32(EXT4_ACL_VERSION);
hptr = (unsigned char *) (h + 1);
for (i = 0, a = facl->a_entries; i < facl_count; i++, a++) {
e = (ext4_acl_entry *) hptr;
e->e_tag = ext2fs_cpu_to_le16(a->e_tag);
e->e_perm = ext2fs_cpu_to_le16(a->e_perm);
switch (a->e_tag) {
case ACL_USER:
case ACL_GROUP:
e->e_id = ext2fs_cpu_to_le32(a->e_id);
hptr += sizeof(ext4_acl_entry);
break;
case ACL_USER_OBJ:
case ACL_GROUP_OBJ:
case ACL_MASK:
case ACL_OTHER:
hptr += sizeof(ext4_acl_entry_short);
break;
default:
err = -EINVAL;
goto out;
}
}
*eacl = h;
*eacl_sz = h_sz;
return err;
out:
free(h);
return err;
}
errcode_t ext2fs_extent_replace(ext2_extent_handle_t handle,
int flags EXT2FS_ATTR((unused)),
struct ext2fs_extent *extent)
{
struct extent_path *path;
struct ext3_extent_idx *ix;
struct ext3_extent *ex;
EXT2_CHECK_MAGIC(handle, EXT2_ET_MAGIC_EXTENT_HANDLE);
if (!(handle->fs->flags & EXT2_FLAG_RW))
return EXT2_ET_RO_FILSYS;
if (!handle->path)
return EXT2_ET_NO_CURRENT_NODE;
path = handle->path + handle->level;
if (!path->curr)
return EXT2_ET_NO_CURRENT_NODE;
#ifdef DEBUG
printf("extent replace: %u ", handle->ino);
dbg_print_extent(0, extent);
#endif
if (handle->level == handle->max_depth) {
ex = path->curr;
ex->ee_block = ext2fs_cpu_to_le32(extent->e_lblk);
ex->ee_start = ext2fs_cpu_to_le32(extent->e_pblk & 0xFFFFFFFF);
ex->ee_start_hi = ext2fs_cpu_to_le16(extent->e_pblk >> 32);
if (extent->e_flags & EXT2_EXTENT_FLAGS_UNINIT) {
if (extent->e_len > EXT_UNINIT_MAX_LEN)
return EXT2_ET_EXTENT_INVALID_LENGTH;
ex->ee_len = ext2fs_cpu_to_le16(extent->e_len +
EXT_INIT_MAX_LEN);
} else {
if (extent->e_len > EXT_INIT_MAX_LEN)
return EXT2_ET_EXTENT_INVALID_LENGTH;
ex->ee_len = ext2fs_cpu_to_le16(extent->e_len);
}
} else {
static errcode_t
ext2fs_inline_data_file_expand(ext2_filsys fs, ext2_ino_t ino,
struct ext2_inode *inode, char *buf, size_t size)
{
ext2_file_t e2_file;
errcode_t retval;
/* Update inode */
if (EXT2_HAS_INCOMPAT_FEATURE(fs->super,
EXT3_FEATURE_INCOMPAT_EXTENTS)) {
int i;
struct ext3_extent_header *eh;
eh = (struct ext3_extent_header *) &inode->i_block[0];
eh->eh_depth = 0;
eh->eh_entries = 0;
eh->eh_magic = ext2fs_cpu_to_le16(EXT3_EXT_MAGIC);
i = (sizeof(inode->i_block) - sizeof(*eh)) /
sizeof(struct ext3_extent);
eh->eh_max = ext2fs_cpu_to_le16(i);
inode->i_flags |= EXT4_EXTENTS_FL;
}
inode->i_flags &= ~EXT4_INLINE_DATA_FL;
inode->i_size = 0;
retval = ext2fs_write_inode(fs, ino, inode);
if (retval)
return retval;
/* Write out the block buffer */
retval = ext2fs_file_open(fs, ino, EXT2_FILE_WRITE, &e2_file);
if (retval)
return retval;
retval = ext2fs_file_write(e2_file, buf, size, 0);
ext2fs_file_close(e2_file);
return retval;
}
/*
* This function takes the leaf nodes which have been written in
* outdir, and populates the root node and any necessary interior nodes.
*/
static errcode_t calculate_tree(ext2_filsys fs,
struct out_dir *outdir,
ext2_ino_t ino,
ext2_ino_t parent)
{
struct ext2_dx_root_info *root_info;
struct ext2_dx_entry *root, *dx_ent = 0;
struct ext2_dx_countlimit *root_limit, *limit;
errcode_t retval;
char * block_start;
int i, c1, c2, nblks;
int limit_offset, root_offset;
root_info = set_root_node(fs, outdir->buf, ino, parent);
root_offset = limit_offset = ((char *) root_info - outdir->buf) +
root_info->info_length;
root_limit = (struct ext2_dx_countlimit *) (outdir->buf + limit_offset);
c1 = root_limit->limit;
nblks = outdir->num;
/* Write out the pointer blocks */
if (nblks-1 <= c1) {
/* Just write out the root block, and we're done */
root = (struct ext2_dx_entry *) (outdir->buf + root_offset);
for (i=1; i < nblks; i++) {
root->block = ext2fs_cpu_to_le32(i);
if (i != 1)
root->hash =
ext2fs_cpu_to_le32(outdir->hashes[i]);
root++;
c1--;
}
} else {
c2 = 0;
limit = 0;
root_info->indirect_levels = 1;
for (i=1; i < nblks; i++) {
if (c1 == 0)
return ENOSPC;
if (c2 == 0) {
if (limit)
limit->limit = limit->count =
ext2fs_cpu_to_le16(limit->limit);
root = (struct ext2_dx_entry *)
(outdir->buf + root_offset);
root->block = ext2fs_cpu_to_le32(outdir->num);
if (i != 1)
root->hash =
ext2fs_cpu_to_le32(outdir->hashes[i]);
if ((retval = get_next_block(fs, outdir,
&block_start)))
return retval;
dx_ent = set_int_node(fs, block_start);
limit = (struct ext2_dx_countlimit *) dx_ent;
c2 = limit->limit;
root_offset += sizeof(struct ext2_dx_entry);
c1--;
}
dx_ent->block = ext2fs_cpu_to_le32(i);
if (c2 != limit->limit)
dx_ent->hash =
ext2fs_cpu_to_le32(outdir->hashes[i]);
dx_ent++;
c2--;
}
limit->count = ext2fs_cpu_to_le16(limit->limit - c2);
limit->limit = ext2fs_cpu_to_le16(limit->limit);
}
root_limit = (struct ext2_dx_countlimit *) (outdir->buf + limit_offset);
root_limit->count = ext2fs_cpu_to_le16(root_limit->limit - c1);
root_limit->limit = ext2fs_cpu_to_le16(root_limit->limit);
return 0;
}
extern errcode_t ext2fs_extent_open(ext2_filsys fs, ext2_ino_t ino,
ext2_extent_handle_t *ret_handle)
{
struct ext2_extent_handle *handle;
errcode_t retval;
int isize = EXT2_INODE_SIZE(fs->super);
int i;
struct ext3_extent_header *eh;
EXT2_CHECK_MAGIC(fs, EXT2_ET_MAGIC_EXT2FS_FILSYS);
if ((ino == 0) || (ino > fs->super->s_inodes_count))
return EXT2_ET_BAD_INODE_NUM;
retval = ext2fs_get_mem(sizeof(struct ext2_extent_handle), &handle);
if (retval)
return retval;
memset(handle, 0, sizeof(struct ext2_extent_handle));
retval = ext2fs_get_mem(isize, &handle->inode);
if (retval)
goto errout;
handle->ino = ino;
handle->fs = fs;
retval = ext2fs_read_inode_full(fs, ino, handle->inode, isize);
if (retval)
goto errout;
eh = (struct ext3_extent_header *) &handle->inode->i_block[0];
for (i=0; i < EXT2_N_BLOCKS; i++)
if (handle->inode->i_block[i])
break;
if (i >= EXT2_N_BLOCKS) {
eh->eh_magic = ext2fs_cpu_to_le16(EXT3_EXT_MAGIC);
eh->eh_depth = 0;
eh->eh_entries = 0;
i = (sizeof(handle->inode->i_block) - sizeof(*eh)) /
sizeof(struct ext3_extent);
eh->eh_max = ext2fs_cpu_to_le16(i);
handle->inode->i_flags |= EXT4_EXTENTS_FL;
}
if (!(handle->inode->i_flags & EXT4_EXTENTS_FL)) {
retval = EXT2_ET_INODE_NOT_EXTENT;
goto errout;
}
retval = ext2fs_extent_header_verify(eh, sizeof(handle->inode->i_block));
if (retval)
goto errout;
handle->max_depth = ext2fs_le16_to_cpu(eh->eh_depth);
handle->type = ext2fs_le16_to_cpu(eh->eh_magic);
retval = ext2fs_get_mem(((handle->max_depth+1) *
sizeof(struct extent_path)),
&handle->path);
memset(handle->path, 0,
(handle->max_depth+1) * sizeof(struct extent_path));
handle->path[0].buf = (char *) handle->inode->i_block;
handle->path[0].left = handle->path[0].entries =
ext2fs_le16_to_cpu(eh->eh_entries);
handle->path[0].max_entries = ext2fs_le16_to_cpu(eh->eh_max);
handle->path[0].curr = 0;
handle->path[0].end_blk =
((((__u64) handle->inode->i_size_high << 32) +
handle->inode->i_size + (fs->blocksize - 1))
>> EXT2_BLOCK_SIZE_BITS(fs->super));
handle->path[0].visit_num = 1;
handle->level = 0;
handle->magic = EXT2_ET_MAGIC_EXTENT_HANDLE;
*ret_handle = handle;
return 0;
errout:
ext2fs_extent_free(handle);
return retval;
}
/* Copy the native file to the fs */
errcode_t do_write_internal(ext2_filsys fs, ext2_ino_t cwd, const char *src,
const char *dest, ext2_ino_t root)
{
int fd;
struct stat statbuf;
ext2_ino_t newfile;
errcode_t retval;
struct ext2_inode inode;
int bufsize = IO_BUFSIZE;
int make_holes = 0;
fd = ext2fs_open_file(src, O_RDONLY, 0);
if (fd < 0) {
com_err(src, errno, 0);
return errno;
}
if (fstat(fd, &statbuf) < 0) {
com_err(src, errno, 0);
close(fd);
return errno;
}
retval = ext2fs_namei(fs, root, cwd, dest, &newfile);
if (retval == 0) {
close(fd);
return EXT2_ET_FILE_EXISTS;
}
retval = ext2fs_new_inode(fs, cwd, 010755, 0, &newfile);
if (retval) {
com_err(__func__, retval, 0);
close(fd);
return retval;
}
#ifdef DEBUGFS
printf("Allocated inode: %u\n", newfile);
#endif
retval = ext2fs_link(fs, cwd, dest, newfile,
EXT2_FT_REG_FILE);
if (retval == EXT2_ET_DIR_NO_SPACE) {
retval = ext2fs_expand_dir(fs, cwd);
if (retval) {
com_err(__func__, retval, "while expanding directory");
close(fd);
return retval;
}
retval = ext2fs_link(fs, cwd, dest, newfile,
EXT2_FT_REG_FILE);
}
if (retval) {
com_err(dest, retval, 0);
close(fd);
return errno;
}
if (ext2fs_test_inode_bitmap2(fs->inode_map, newfile))
com_err(__func__, 0, "Warning: inode already set");
ext2fs_inode_alloc_stats2(fs, newfile, +1, 0);
memset(&inode, 0, sizeof(inode));
inode.i_mode = (statbuf.st_mode & ~LINUX_S_IFMT) | LINUX_S_IFREG;
inode.i_atime = inode.i_ctime = inode.i_mtime =
fs->now ? fs->now : time(0);
inode.i_links_count = 1;
retval = ext2fs_inode_size_set(fs, &inode, statbuf.st_size);
if (retval) {
com_err(dest, retval, 0);
close(fd);
return retval;
}
if (EXT2_HAS_INCOMPAT_FEATURE(fs->super,
EXT4_FEATURE_INCOMPAT_INLINE_DATA)) {
inode.i_flags |= EXT4_INLINE_DATA_FL;
} else if (fs->super->s_feature_incompat &
EXT3_FEATURE_INCOMPAT_EXTENTS) {
int i;
struct ext3_extent_header *eh;
eh = (struct ext3_extent_header *) &inode.i_block[0];
eh->eh_depth = 0;
eh->eh_entries = 0;
eh->eh_magic = ext2fs_cpu_to_le16(EXT3_EXT_MAGIC);
i = (sizeof(inode.i_block) - sizeof(*eh)) /
sizeof(struct ext3_extent);
eh->eh_max = ext2fs_cpu_to_le16(i);
inode.i_flags |= EXT4_EXTENTS_FL;
}
retval = ext2fs_write_new_inode(fs, newfile, &inode);
if (retval) {
com_err(__func__, retval, "while creating inode %u", newfile);
close(fd);
return retval;
}
if (inode.i_flags & EXT4_INLINE_DATA_FL) {
retval = ext2fs_inline_data_init(fs, newfile);
if (retval) {
com_err("copy_file", retval, 0);
close(fd);
return retval;
}
}
if (LINUX_S_ISREG(inode.i_mode)) {
if (statbuf.st_blocks < statbuf.st_size / S_BLKSIZE) {
make_holes = 1;
/*
* Use I/O blocksize as buffer size when
* copying sparse files.
*/
bufsize = statbuf.st_blksize;
}
retval = copy_file(fs, fd, newfile, bufsize, make_holes);
if (retval)
com_err("copy_file", retval, 0);
}
close(fd);
return retval;
}
