static void create_lost_and_found(ext2_filsys fs)
{
errcode_t retval;
ext2_ino_t ino;
const char *name = "lost+found";
int i;
int lpf_size = 0;
fs->umask = 077;
retval = ext2fs_mkdir(fs, EXT2_ROOT_INO, 0, name);
if (retval) {
com_err("ext2fs_mkdir", retval,
_("while creating /lost+found"));
exit(1);
}
retval = ext2fs_lookup(fs, EXT2_ROOT_INO, name, strlen(name), 0, &ino);
if (retval) {
com_err("ext2_lookup", retval,
_("while looking up /lost+found"));
exit(1);
}
for (i=1; i < EXT2_NDIR_BLOCKS; i++) {
if ((lpf_size += fs->blocksize) >= 16*1024)
break;
retval = ext2fs_expand_dir(fs, ino);
if (retval) {
com_err("ext2fs_expand_dir", retval,
_("while expanding /lost+found"));
exit(1);
}
}
}
/*
* Returns 0 if not able to find the quota file, otherwise returns its
* inode number.
*/
int quota_file_exists(ext2_filsys fs, int qtype, int fmt)
{
char qf_name[256];
errcode_t ret;
ext2_ino_t ino;
if (qtype >= MAXQUOTAS)
return -EINVAL;
quota_get_qf_name(qtype, QFMT_VFS_V1, qf_name);
ret = ext2fs_lookup(fs, EXT2_ROOT_INO, qf_name, strlen(qf_name), 0,
&ino);
if (ret)
return 0;
return ino;
}
/*
* this function creates a new directory inode (returned in newdir)
* and the link in the upper directory (e2c->curr_e2dir)
* the name is the basename of the current path (e2c->curr_path)
*/
int e2mkdir(e2i_ctx_t *e2c, ext2_ino_t *newdir) {
int ret;
struct stat s;
const char *dname;
ext2_ino_t nd;
ret = lstat(e2c->curr_path, &s);
ERRNO_ERR(ret,"Could not 'stat': ", e2c->curr_path);
/* sanity check */
if (!S_ISDIR(s.st_mode)) {
fprintf(stderr, "File '%s' is not a directory\n", e2c->curr_path);
return -1;
}
/* edit the directoryname and create it */
dname = basename(e2c->curr_path);
ret = ext2fs_mkdir(e2c->fs, e2c->curr_e2dir, 0, dname);
if (ret == EXT2_ET_DIR_NO_SPACE) {
/* resize the directory */
if (ext2fs_expand_dir(e2c->fs, e2c->curr_e2dir) == 0)
ret = ext2fs_mkdir(e2c->fs, e2c->curr_e2dir, 0, dname);
}
E2_ERR(ret, "Could not create dir: ", dname);
/* say what we do and increase the counter */
if (e2c->verbose)
printf ("Creating directory %s\n", dname);
e2c->cnt->dir++;
/* lookup the inode of the new directory if requested */
ret = ext2fs_lookup(e2c->fs, e2c->curr_e2dir, dname, strlen(dname), 0, &nd);
E2_ERR(ret, "Could not Ext2-lookup: ", dname);
modinode(e2c, dname, nd);
if (newdir) {
*newdir = nd;
}
return 0;
}
static errcode_t dir_namei(ext2_filsys fs, ext2_ino_t root, ext2_ino_t dir,
const char *pathname, int pathlen,
int link_count, char *buf,
const char **name, int *namelen,
ext2_ino_t *res_inode)
{
char c;
const char *thisname;
int len;
ext2_ino_t inode;
errcode_t retval;
if ((c = *pathname) == '/') {
dir = root;
pathname++;
pathlen--;
}
while (1) {
thisname = pathname;
for (len=0; --pathlen >= 0;len++) {
c = *(pathname++);
if (c == '/')
break;
}
if (pathlen < 0)
break;
retval = ext2fs_lookup (fs, dir, thisname, len, buf, &inode);
if (retval) return retval;
retval = follow_link (fs, root, dir, inode,
link_count, buf, &dir);
if (retval) return retval;
}
*name = thisname;
*namelen = len;
*res_inode = dir;
return 0;
}
static errcode_t open_namei(ext2_filsys fs, ext2_ino_t root, ext2_ino_t base,
const char *pathname, size_t pathlen, int follow,
int link_count, char *buf, ext2_ino_t *res_inode)
{
const char *base_name;
int namelen;
ext2_ino_t dir, inode;
errcode_t retval;
#ifdef NAMEI_DEBUG
printf("open_namei: root=%lu, dir=%lu, path=%*s, lc=%d\n",
root, base, pathlen, pathname, link_count);
#endif
retval = dir_namei(fs, root, base, pathname, pathlen,
link_count, buf, &base_name, &namelen, &dir);
if (retval) return retval;
if (!namelen) {
*res_inode=dir;
return 0;
}
retval = ext2fs_lookup (fs, dir, base_name, namelen, buf, &inode);
if (retval)
return retval;
if (follow) {
retval = follow_link(fs, root, dir, inode, link_count,
buf, &inode);
if (retval)
return retval;
}
#ifdef NAMEI_DEBUG
printf("open_namei: (link_count=%d) returns %lu\n",
link_count, inode);
#endif
*res_inode = inode;
return 0;
}
void e2fsck_move_ext3_journal(e2fsck_t ctx)
{
struct ext2_super_block *sb = ctx->fs->super;
struct problem_context pctx;
struct ext2_inode inode;
ext2_filsys fs = ctx->fs;
ext2_ino_t ino;
errcode_t retval;
const char * const * cpp;
int group, mount_flags;
clear_problem_context(&pctx);
/*
* If the filesystem is opened read-only, or there is no
* journal, then do nothing.
*/
if ((ctx->options & E2F_OPT_READONLY) ||
(sb->s_journal_inum == 0) ||
!(sb->s_feature_compat & EXT3_FEATURE_COMPAT_HAS_JOURNAL))
return;
/*
* Read in the journal inode
*/
if (ext2fs_read_inode(fs, sb->s_journal_inum, &inode) != 0)
return;
/*
* If it's necessary to backup the journal inode, do so.
*/
if ((sb->s_jnl_backup_type == 0) ||
((sb->s_jnl_backup_type == EXT3_JNL_BACKUP_BLOCKS) &&
memcmp(inode.i_block, sb->s_jnl_blocks, EXT2_N_BLOCKS*4))) {
if (fix_problem(ctx, PR_0_BACKUP_JNL, &pctx)) {
memcpy(sb->s_jnl_blocks, inode.i_block,
EXT2_N_BLOCKS*4);
sb->s_jnl_blocks[16] = inode.i_size;
sb->s_jnl_backup_type = EXT3_JNL_BACKUP_BLOCKS;
ext2fs_mark_super_dirty(fs);
fs->flags &= ~EXT2_FLAG_MASTER_SB_ONLY;
}
}
/*
* If the journal is already the hidden inode, then do nothing
*/
if (sb->s_journal_inum == EXT2_JOURNAL_INO)
return;
/*
* The journal inode had better have only one link and not be readable.
*/
if (inode.i_links_count != 1)
return;
/*
* If the filesystem is mounted, or we can't tell whether
* or not it's mounted, do nothing.
*/
retval = ext2fs_check_if_mounted(ctx->filesystem_name, &mount_flags);
if (retval || (mount_flags & EXT2_MF_MOUNTED))
return;
/*
* If we can't find the name of the journal inode, then do
* nothing.
*/
for (cpp = journal_names; *cpp; cpp++) {
retval = ext2fs_lookup(fs, EXT2_ROOT_INO, *cpp,
strlen(*cpp), 0, &ino);
if ((retval == 0) && (ino == sb->s_journal_inum))
break;
}
if (*cpp == 0)
return;
/* We need the inode bitmap to be loaded */
retval = ext2fs_read_bitmaps(fs);
if (retval)
return;
pctx.str = *cpp;
if (!fix_problem(ctx, PR_0_MOVE_JOURNAL, &pctx))
return;
/*
* OK, we've done all the checks, let's actually move the
* journal inode. Errors at this point mean we need to force
* an ext2 filesystem check.
*/
if ((retval = ext2fs_unlink(fs, EXT2_ROOT_INO, *cpp, ino, 0)) != 0)
goto err_out;
if ((retval = ext2fs_write_inode(fs, EXT2_JOURNAL_INO, &inode)) != 0)
goto err_out;
sb->s_journal_inum = EXT2_JOURNAL_INO;
ext2fs_mark_super_dirty(fs);
fs->flags &= ~EXT2_FLAG_MASTER_SB_ONLY;
inode.i_links_count = 0;
inode.i_dtime = ctx->now;
if ((retval = ext2fs_write_inode(fs, ino, &inode)) != 0)
goto err_out;
group = ext2fs_group_of_ino(fs, ino);
ext2fs_unmark_inode_bitmap(fs->inode_map, ino);
ext2fs_mark_ib_dirty(fs);
fs->group_desc[group].bg_free_inodes_count++;
fs->super->s_free_inodes_count++;
return;
err_out:
pctx.errcode = retval;
fix_problem(ctx, PR_0_ERR_MOVE_JOURNAL, &pctx);
fs->super->s_state &= ~EXT2_VALID_FS;
ext2fs_mark_super_dirty(fs);
return;
}
errcode_t ext2fs_mkdir(ext2_filsys fs, ext2_ino_t parent, ext2_ino_t inum,
const char *name)
{
errcode_t retval;
struct ext2_inode parent_inode, inode;
ext2_ino_t ino = inum;
ext2_ino_t scratch_ino;
blk_t blk;
char *block = 0;
char *ext2bp_block = 0;
EXT2_CHECK_MAGIC(fs, EXT2_ET_MAGIC_EXT2FS_FILSYS);
/*
* Allocate an inode, if necessary
*/
if (!ino) {
retval = ext2fs_new_inode(fs, parent, LINUX_S_IFDIR | 0755,
0, &ino);
if (retval)
goto cleanup;
}
/*
* Allocate a data block for the directory
*/
retval = ext2fs_new_block(fs, 0, 0, &blk);
printf("Using block %lu for the dir\n", blk);
if (retval)
goto cleanup;
printf("Writing the dir info into the buffer\n");
/*
* Create a scratch template for the directory
*/
/* Vijay: Offset the block address by the backpointer information */
retval = ext2fs_new_dir_block(fs, ino, parent, &block);
//ext2bp_block = block + EXT2BP_HEADER_SIZE;
//retval = ext2fs_new_dir_block(fs, ino, parent, &ext2bp_block);
if (retval)
goto cleanup;
/*
* Get the parent's inode, if necessary
*/
if (parent != ino) {
retval = ext2fs_read_inode(fs, parent, &parent_inode);
if (retval)
goto cleanup;
} else
memset(&parent_inode, 0, sizeof(parent_inode));
/*
* Create the inode structure....
*/
memset(&inode, 0, sizeof(struct ext2_inode));
inode.i_mode = LINUX_S_IFDIR | (0777 & ~fs->umask);
inode.i_uid = inode.i_gid = 0;
ext2fs_iblk_set(fs, &inode, 1);
inode.i_block[0] = blk;
inode.i_links_count = 2;
inode.i_size = fs->blocksize;
/* Vijay: Adding backlink to the inode - Modifying position 0
* since this is a new inode - It will not have any other links
* pointing to it. First, we need to reset all the backlinks.
*/
printf("Vijay: Adding the backlink to %s\n", name);
int i;
for(i=0; i < EXT2_N_LINKS; i++)
inode.i_backlinks[i] = 0;
inode.i_backlinks[0] = parent;
printf("Going to write the dir block\n");
/*
* Write out the inode and inode data block
*/
retval = ext2fs_write_dir_block(fs, blk, block);
if (retval)
goto cleanup;
retval = ext2fs_write_new_inode(fs, ino, &inode);
if (retval)
goto cleanup;
printf("Link the directory into the filesystem hierarchy\n");
/*
* Link the directory into the filesystem hierarchy
*/
if (name) {
retval = ext2fs_lookup(fs, parent, name, strlen(name), 0,
&scratch_ino);
if (!retval) {
retval = EXT2_ET_DIR_EXISTS;
name = 0;
goto cleanup;
}
if (retval != EXT2_ET_FILE_NOT_FOUND)
goto cleanup;
retval = ext2fs_link(fs, parent, name, ino, EXT2_FT_DIR);
printf("Linking done: %lu\n", retval);
if (retval)
goto cleanup;
}
/*
* Update parent inode's counts
*/
if (parent != ino) {
parent_inode.i_links_count++;
retval = ext2fs_write_inode(fs, parent, &parent_inode);
if (retval)
goto cleanup;
}
/*
* Update accounting....
*/
ext2fs_block_alloc_stats(fs, blk, +1);
ext2fs_inode_alloc_stats2(fs, ino, +1, 1);
cleanup:
if (block)
ext2fs_free_mem(&block);
return retval;
}
static errcode_t dir_test(ext2_filsys fs)
{
const char *dot_name = ".";
const char *stub_name = "stub";
const char *parent_name = "test";
ext2_ino_t parent, dir, tmp;
errcode_t retval;
char dirname[PATH_MAX];
int i;
retval = ext2fs_mkdir(fs, 11, 11, stub_name);
if (retval) {
com_err("dir_test", retval, "while creating %s dir", stub_name);
return retval;
}
retval = ext2fs_mkdir(fs, 11, 0, parent_name);
if (retval) {
com_err("dir_test", retval,
"while creating %s dir", parent_name);
return retval;
}
retval = ext2fs_lookup(fs, 11, parent_name, strlen(parent_name),
0, &parent);
if (retval) {
com_err("dir_test", retval,
"while looking up %s dir", parent_name);
return retval;
}
retval = ext2fs_lookup(fs, parent, dot_name, strlen(dot_name),
0, &tmp);
if (retval) {
com_err("dir_test", retval,
"while looking up %s dir", parent_name);
return retval;
}
if (parent != tmp) {
fprintf(stderr, "tst_inline_data: parent (%u) != tmp (%u)\n",
parent, tmp);
return 1;
}
for (i = 0, dir = 13; i < 4; i++, dir++) {
tmp = 0;
snprintf(dirname, sizeof(dirname), "%d", i);
retval = ext2fs_mkdir(fs, parent, 0, dirname);
if (retval) {
com_err("dir_test", retval,
"while creating %s dir", dirname);
return retval;
}
retval = ext2fs_lookup(fs, parent, dirname, strlen(dirname),
0, &tmp);
if (retval) {
com_err("dir_test", retval,
"while looking up %s dir", parent_name);
return retval;
}
if (dir != tmp) {
fprintf(stderr,
"tst_inline_data: dir (%u) != tmp (%u)\n",
dir, tmp);
return 1;
}
}
snprintf(dirname, sizeof(dirname), "%d", i);
retval = ext2fs_mkdir(fs, parent, 0, dirname);
if (retval && retval != EXT2_ET_DIR_NO_SPACE) {
com_err("dir_test", retval, "while creating %s dir", dirname);
return retval;
}
retval = ext2fs_expand_dir(fs, parent);
if (retval) {
com_err("dir_test", retval, "while expanding %s dir", parent_name);
return retval;
}
return 0;
}
/*
* This routine gets the lost_and_found inode, making it a directory
* if necessary
*/
ext2_ino_t e2fsck_get_lost_and_found(e2fsck_t ctx, int fix)
{
ext2_filsys fs = ctx->fs;
ext2_ino_t ino;
blk64_t blk;
errcode_t retval;
struct ext2_inode inode;
char * block;
static const char name[] = "lost+found";
struct problem_context pctx;
if (ctx->lost_and_found)
return ctx->lost_and_found;
clear_problem_context(&pctx);
retval = ext2fs_lookup(fs, EXT2_ROOT_INO, name,
sizeof(name)-1, 0, &ino);
if (retval && !fix)
return 0;
if (!retval) {
if (ext2fs_check_directory(fs, ino) == 0) {
ctx->lost_and_found = ino;
return ino;
}
/* Lost+found isn't a directory! */
if (!fix)
return 0;
pctx.ino = ino;
if (!fix_problem(ctx, PR_3_LPF_NOTDIR, &pctx))
return 0;
/* OK, unlink the old /lost+found file. */
pctx.errcode = ext2fs_unlink(fs, EXT2_ROOT_INO, name, ino, 0);
if (pctx.errcode) {
pctx.str = "ext2fs_unlink";
fix_problem(ctx, PR_3_CREATE_LPF_ERROR, &pctx);
return 0;
}
(void) e2fsck_dir_info_set_parent(ctx, ino, 0);
e2fsck_adjust_inode_count(ctx, ino, -1);
} else if (retval != EXT2_ET_FILE_NOT_FOUND) {
pctx.errcode = retval;
fix_problem(ctx, PR_3_ERR_FIND_LPF, &pctx);
}
if (!fix_problem(ctx, PR_3_NO_LF_DIR, 0))
return 0;
/*
* Read the inode and block bitmaps in; we'll be messing with
* them.
*/
e2fsck_read_bitmaps(ctx);
/*
* First, find a free block
*/
retval = ext2fs_new_block2(fs, 0, ctx->block_found_map, &blk);
if (retval) {
pctx.errcode = retval;
fix_problem(ctx, PR_3_ERR_LPF_NEW_BLOCK, &pctx);
return 0;
}
ext2fs_mark_block_bitmap2(ctx->block_found_map, blk);
ext2fs_block_alloc_stats2(fs, blk, +1);
/*
* Next find a free inode.
*/
retval = ext2fs_new_inode(fs, EXT2_ROOT_INO, 040700,
ctx->inode_used_map, &ino);
if (retval) {
pctx.errcode = retval;
fix_problem(ctx, PR_3_ERR_LPF_NEW_INODE, &pctx);
return 0;
}
ext2fs_mark_inode_bitmap2(ctx->inode_used_map, ino);
ext2fs_mark_inode_bitmap2(ctx->inode_dir_map, ino);
ext2fs_inode_alloc_stats2(fs, ino, +1, 1);
/*
* Now let's create the actual data block for the inode
*/
retval = ext2fs_new_dir_block(fs, ino, EXT2_ROOT_INO, &block);
if (retval) {
pctx.errcode = retval;
fix_problem(ctx, PR_3_ERR_LPF_NEW_DIR_BLOCK, &pctx);
return 0;
}
retval = ext2fs_write_dir_block4(fs, blk, block, 0, ino);
ext2fs_free_mem(&block);
if (retval) {
pctx.errcode = retval;
fix_problem(ctx, PR_3_ERR_LPF_WRITE_BLOCK, &pctx);
return 0;
}
/*
* Set up the inode structure
*/
memset(&inode, 0, sizeof(inode));
inode.i_mode = 040700;
inode.i_size = fs->blocksize;
inode.i_atime = inode.i_ctime = inode.i_mtime = ctx->now;
inode.i_links_count = 2;
ext2fs_iblk_set(fs, &inode, 1);
inode.i_block[0] = blk;
/*
* Next, write out the inode.
*/
pctx.errcode = ext2fs_write_new_inode(fs, ino, &inode);
if (pctx.errcode) {
pctx.str = "ext2fs_write_inode";
fix_problem(ctx, PR_3_CREATE_LPF_ERROR, &pctx);
return 0;
}
/*
* Finally, create the directory link
*/
pctx.errcode = ext2fs_link(fs, EXT2_ROOT_INO, name, ino, EXT2_FT_DIR);
if (pctx.errcode) {
pctx.str = "ext2fs_link";
fix_problem(ctx, PR_3_CREATE_LPF_ERROR, &pctx);
return 0;
}
/*
* Miscellaneous bookkeeping that needs to be kept straight.
*/
e2fsck_add_dir_info(ctx, ino, EXT2_ROOT_INO);
e2fsck_adjust_inode_count(ctx, EXT2_ROOT_INO, 1);
ext2fs_icount_store(ctx->inode_count, ino, 2);
ext2fs_icount_store(ctx->inode_link_info, ino, 2);
ctx->lost_and_found = ino;
quota_data_add(ctx->qctx, &inode, ino, fs->blocksize);
quota_data_inodes(ctx->qctx, &inode, ino, +1);
#if 0
printf("/lost+found created; inode #%lu\n", ino);
#endif
return ino;
}
errcode_t ext2fs_symlink(ext2_filsys fs, ext2_ino_t parent, ext2_ino_t ino,
const char *name, char *target)
{
ext2_extent_handle_t handle;
errcode_t retval;
struct ext2_inode inode;
ext2_ino_t scratch_ino;
blk64_t blk;
int fastlink;
unsigned int target_len;
char *block_buf = 0;
EXT2_CHECK_MAGIC(fs, EXT2_ET_MAGIC_EXT2FS_FILSYS);
/* The Linux kernel doesn't allow for links longer than a block */
target_len = strlen(target);
if (target_len > fs->blocksize) {
retval = EXT2_ET_INVALID_ARGUMENT;
goto cleanup;
}
/*
* Allocate a data block for slow links
*/
fastlink = (target_len < sizeof(inode.i_block));
if (!fastlink) {
retval = ext2fs_new_block2(fs, 0, 0, &blk);
if (retval)
goto cleanup;
retval = ext2fs_get_mem(fs->blocksize, &block_buf);
if (retval)
goto cleanup;
}
/*
* Allocate an inode, if necessary
*/
if (!ino) {
retval = ext2fs_new_inode(fs, parent, LINUX_S_IFLNK | 0755,
0, &ino);
if (retval)
goto cleanup;
}
/*
* Create the inode structure....
*/
memset(&inode, 0, sizeof(struct ext2_inode));
inode.i_mode = LINUX_S_IFLNK | 0777;
inode.i_uid = inode.i_gid = 0;
ext2fs_iblk_set(fs, &inode, fastlink ? 0 : 1);
inode.i_links_count = 1;
inode.i_size = target_len;
/* The time fields are set by ext2fs_write_new_inode() */
if (fastlink) {
/* Fast symlinks, target stored in inode */
strcpy((char *)&inode.i_block, target);
} else {
/* Slow symlinks, target stored in the first block */
memset(block_buf, 0, fs->blocksize);
strcpy(block_buf, target);
if (fs->super->s_feature_incompat &
EXT3_FEATURE_INCOMPAT_EXTENTS) {
/*
* The extent bmap is setup after the inode and block
* have been written out below.
*/
inode.i_flags |= EXT4_EXTENTS_FL;
}
}
/*
* Write out the inode and inode data block. The inode generation
* number is assigned by write_new_inode, which means that the
* operations using ino must come after it.
*/
retval = ext2fs_write_new_inode(fs, ino, &inode);
if (retval)
goto cleanup;
if (!fastlink) {
retval = ext2fs_bmap2(fs, ino, &inode, NULL, BMAP_SET, 0, NULL,
&blk);
if (retval)
goto cleanup;
retval = io_channel_write_blk64(fs->io, blk, 1, block_buf);
if (retval)
goto cleanup;
}
/*
* Link the symlink into the filesystem hierarchy
*/
if (name) {
retval = ext2fs_lookup(fs, parent, name, strlen(name), 0,
&scratch_ino);
if (!retval) {
retval = EXT2_ET_FILE_EXISTS;
goto cleanup;
}
if (retval != EXT2_ET_FILE_NOT_FOUND)
goto cleanup;
retval = ext2fs_link(fs, parent, name, ino, EXT2_FT_SYMLINK);
if (retval)
goto cleanup;
}
/*
* Update accounting....
*/
if (!fastlink)
ext2fs_block_alloc_stats2(fs, blk, +1);
ext2fs_inode_alloc_stats2(fs, ino, +1, 0);
cleanup:
if (block_buf)
ext2fs_free_mem(&block_buf);
return retval;
}
errcode_t ext2fs_mkdir(ext2_filsys fs, ext2_ino_t parent, ext2_ino_t inum,
const char *name)
{
errcode_t retval;
struct ext2_inode parent_inode, inode;
ext2_ino_t ino = inum;
ext2_ino_t scratch_ino;
blk_t blk;
char *block = 0;
EXT2_CHECK_MAGIC(fs, EXT2_ET_MAGIC_EXT2FS_FILSYS);
/*
* Allocate an inode, if necessary
*/
if (!ino) {
retval = ext2fs_new_inode(fs, parent, LINUX_S_IFDIR | 0755,
0, &ino);
if (retval)
goto cleanup;
}
/*
* Allocate a data block for the directory
*/
retval = ext2fs_new_block(fs, 0, 0, &blk);
if (retval)
goto cleanup;
/*
* Create a scratch template for the directory
*/
retval = ext2fs_new_dir_block(fs, ino, parent, &block);
if (retval)
goto cleanup;
/*
* Get the parent's inode, if necessary
*/
if (parent != ino) {
retval = ext2fs_read_inode(fs, parent, &parent_inode);
if (retval)
goto cleanup;
} else
memset(&parent_inode, 0, sizeof(parent_inode));
/*
* Create the inode structure....
*/
memset(&inode, 0, sizeof(struct ext2_inode));
inode.i_mode = LINUX_S_IFDIR | (0777 & ~fs->umask);
inode.i_uid = inode.i_gid = 0;
inode.i_blocks = fs->blocksize / 512;
inode.i_block[0] = blk;
inode.i_links_count = 2;
inode.i_ctime = inode.i_atime = inode.i_mtime = fs->now ? fs->now : time(NULL);
inode.i_size = fs->blocksize;
/*
* Write out the inode and inode data block
*/
retval = ext2fs_write_dir_block(fs, blk, block);
if (retval)
goto cleanup;
retval = ext2fs_write_new_inode(fs, ino, &inode);
if (retval)
goto cleanup;
/*
* Link the directory into the filesystem hierarchy
*/
if (name) {
retval = ext2fs_lookup(fs, parent, name, strlen(name), 0,
&scratch_ino);
if (!retval) {
retval = EXT2_ET_DIR_EXISTS;
name = 0;
goto cleanup;
}
if (retval != EXT2_ET_FILE_NOT_FOUND)
goto cleanup;
retval = ext2fs_link(fs, parent, name, ino, EXT2_FT_DIR);
if (retval)
goto cleanup;
}
/*
* Update parent inode's counts
*/
if (parent != ino) {
parent_inode.i_links_count++;
retval = ext2fs_write_inode(fs, parent, &parent_inode);
if (retval)
goto cleanup;
}
/*
* Update accounting....
*/
ext2fs_block_alloc_stats(fs, blk, +1);
ext2fs_inode_alloc_stats2(fs, ino, +1, 1);
cleanup:
if (block)
ext2fs_free_mem(&block);
return retval;
}
errcode_t ext2fs_mkdir(ext2_filsys fs, ext2_ino_t parent, ext2_ino_t inum,
const char *name)
{
ext2_extent_handle_t handle;
errcode_t retval;
struct ext2_inode parent_inode, inode;
ext2_ino_t ino = inum;
ext2_ino_t scratch_ino;
blk64_t blk;
char *block = 0;
EXT2_CHECK_MAGIC(fs, EXT2_ET_MAGIC_EXT2FS_FILSYS);
/*
* Allocate an inode, if necessary
*/
if (!ino) {
retval = ext2fs_new_inode(fs, parent, LINUX_S_IFDIR | 0755,
0, &ino);
if (retval)
goto cleanup;
}
/*
* Allocate a data block for the directory
*/
retval = ext2fs_new_block2(fs, 0, 0, &blk);
if (retval)
goto cleanup;
/*
* Create a scratch template for the directory
*/
retval = ext2fs_new_dir_block(fs, ino, parent, &block);
if (retval)
goto cleanup;
/*
* Get the parent's inode, if necessary
*/
if (parent != ino) {
retval = ext2fs_read_inode(fs, parent, &parent_inode);
if (retval)
goto cleanup;
} else
memset(&parent_inode, 0, sizeof(parent_inode));
/*
* Create the inode structure....
*/
memset(&inode, 0, sizeof(struct ext2_inode));
inode.i_mode = LINUX_S_IFDIR | (0777 & ~fs->umask);
inode.i_uid = inode.i_gid = 0;
ext2fs_iblk_set(fs, &inode, 1);
if (fs->super->s_feature_incompat & EXT3_FEATURE_INCOMPAT_EXTENTS)
inode.i_flags |= EXT4_EXTENTS_FL;
else
inode.i_block[0] = blk;
inode.i_links_count = 2;
inode.i_size = fs->blocksize;
/*
* Write out the inode and inode data block
*/
retval = ext2fs_write_dir_block(fs, blk, block);
if (retval)
goto cleanup;
retval = ext2fs_write_new_inode(fs, ino, &inode);
if (retval)
goto cleanup;
if (fs->super->s_feature_incompat & EXT3_FEATURE_INCOMPAT_EXTENTS) {
retval = ext2fs_extent_open2(fs, ino, &inode, &handle);
if (retval)
goto cleanup;
retval = ext2fs_extent_set_bmap(handle, 0, blk, 0);
ext2fs_extent_free(handle);
if (retval)
goto cleanup;
}
/*
* Link the directory into the filesystem hierarchy
*/
if (name) {
retval = ext2fs_lookup(fs, parent, name, strlen(name), 0,
&scratch_ino);
if (!retval) {
retval = EXT2_ET_DIR_EXISTS;
name = 0;
goto cleanup;
}
if (retval != EXT2_ET_FILE_NOT_FOUND)
goto cleanup;
retval = ext2fs_link(fs, parent, name, ino, EXT2_FT_DIR);
if (retval)
goto cleanup;
}
/*
* Update parent inode's counts
*/
if (parent != ino) {
parent_inode.i_links_count++;
retval = ext2fs_write_inode(fs, parent, &parent_inode);
if (retval)
goto cleanup;
}
/*
* Update accounting....
*/
ext2fs_block_alloc_stats2(fs, blk, +1);
ext2fs_inode_alloc_stats2(fs, ino, +1, 1);
cleanup:
if (block)
ext2fs_free_mem(&block);
return retval;
}
/*
* This routine gets the lost_and_found inode, making it a directory
* if necessary
*/
ext2_ino_t e2fsck_get_lost_and_found(e2fsck_t ctx, int fix)
{
ext2_filsys fs = ctx->fs;
ext2_ino_t ino;
blk64_t blk;
errcode_t retval;
struct ext2_inode inode;
char * block;
static const char name[] = "lost+found";
struct problem_context pctx;
int will_rehash, flags;
if (ctx->lost_and_found)
return ctx->lost_and_found;
clear_problem_context(&pctx);
will_rehash = e2fsck_dir_will_be_rehashed(ctx, EXT2_ROOT_INO);
if (will_rehash) {
flags = ctx->fs->flags;
ctx->fs->flags |= EXT2_FLAG_IGNORE_CSUM_ERRORS;
}
retval = ext2fs_lookup(fs, EXT2_ROOT_INO, name,
sizeof(name)-1, 0, &ino);
if (will_rehash)
ctx->fs->flags = (flags & EXT2_FLAG_IGNORE_CSUM_ERRORS) |
(ctx->fs->flags & ~EXT2_FLAG_IGNORE_CSUM_ERRORS);
if (retval && !fix)
return 0;
if (!retval) {
/* Lost+found shouldn't have inline data */
retval = ext2fs_read_inode(fs, ino, &inode);
if (fix && retval)
return 0;
if (fix && (inode.i_flags & EXT4_INLINE_DATA_FL)) {
if (!fix_problem(ctx, PR_3_LPF_INLINE_DATA, &pctx))
return 0;
goto unlink;
}
if (fix && (inode.i_flags & EXT4_ENCRYPT_FL)) {
if (!fix_problem(ctx, PR_3_LPF_ENCRYPTED, &pctx))
return 0;
goto unlink;
}
if (ext2fs_check_directory(fs, ino) == 0) {
ctx->lost_and_found = ino;
return ino;
}
/* Lost+found isn't a directory! */
if (!fix)
return 0;
pctx.ino = ino;
if (!fix_problem(ctx, PR_3_LPF_NOTDIR, &pctx))
return 0;
unlink:
/* OK, unlink the old /lost+found file. */
pctx.errcode = ext2fs_unlink(fs, EXT2_ROOT_INO, name, ino, 0);
if (pctx.errcode) {
pctx.str = "ext2fs_unlink";
fix_problem(ctx, PR_3_CREATE_LPF_ERROR, &pctx);
return 0;
}
(void) e2fsck_dir_info_set_parent(ctx, ino, 0);
e2fsck_adjust_inode_count(ctx, ino, -1);
/*
* If the old lost+found was a directory, we've just
* disconnected it from the directory tree, which
* means we need to restart the directory tree scan.
* The simplest way to do this is restart the whole
* e2fsck operation.
*/
if (LINUX_S_ISDIR(inode.i_mode))
ctx->flags |= E2F_FLAG_RESTART;
} else if (retval != EXT2_ET_FILE_NOT_FOUND) {
pctx.errcode = retval;
fix_problem(ctx, PR_3_ERR_FIND_LPF, &pctx);
}
if (!fix_problem(ctx, PR_3_NO_LF_DIR, 0))
return 0;
/*
* Read the inode and block bitmaps in; we'll be messing with
* them.
*/
e2fsck_read_bitmaps(ctx);
/*
* First, find a free block
*/
if (ctx->lnf_repair_block) {
blk = ctx->lnf_repair_block;
ctx->lnf_repair_block = 0;
goto skip_new_block;
}
retval = ext2fs_new_block2(fs, 0, ctx->block_found_map, &blk);
if (retval == EXT2_ET_BLOCK_ALLOC_FAIL &&
fix_problem(ctx, PR_3_LPF_NO_SPACE, &pctx)) {
fix_problem(ctx, PR_3_NO_SPACE_TO_RECOVER, &pctx);
ctx->lost_and_found = EXT2_ROOT_INO;
return 0;
}
if (retval) {
pctx.errcode = retval;
fix_problem(ctx, PR_3_ERR_LPF_NEW_BLOCK, &pctx);
return 0;
}
ext2fs_mark_block_bitmap2(ctx->block_found_map, blk);
skip_new_block:
ext2fs_block_alloc_stats2(fs, blk, +1);
/*
* Next find a free inode.
*/
retval = ext2fs_new_inode(fs, EXT2_ROOT_INO, 040700,
ctx->inode_used_map, &ino);
if (retval == EXT2_ET_INODE_ALLOC_FAIL &&
fix_problem(ctx, PR_3_LPF_NO_SPACE, &pctx)) {
fix_problem(ctx, PR_3_NO_SPACE_TO_RECOVER, &pctx);
ctx->lost_and_found = EXT2_ROOT_INO;
return 0;
}
if (retval) {
pctx.errcode = retval;
fix_problem(ctx, PR_3_ERR_LPF_NEW_INODE, &pctx);
return 0;
}
ext2fs_mark_inode_bitmap2(ctx->inode_used_map, ino);
ext2fs_mark_inode_bitmap2(ctx->inode_dir_map, ino);
ext2fs_inode_alloc_stats2(fs, ino, +1, 1);
/*
* Set up the inode structure
*/
memset(&inode, 0, sizeof(inode));
inode.i_mode = 040700;
inode.i_size = fs->blocksize;
inode.i_atime = inode.i_ctime = inode.i_mtime = ctx->now;
inode.i_links_count = 2;
ext2fs_iblk_set(fs, &inode, 1);
inode.i_block[0] = blk;
/*
* Next, write out the inode.
*/
pctx.errcode = ext2fs_write_new_inode(fs, ino, &inode);
if (pctx.errcode) {
pctx.str = "ext2fs_write_inode";
fix_problem(ctx, PR_3_CREATE_LPF_ERROR, &pctx);
return 0;
}
/*
* Now let's create the actual data block for the inode.
* Due to metadata_csum, the directory block MUST be written
* after the inode is written to disk!
*/
retval = ext2fs_new_dir_block(fs, ino, EXT2_ROOT_INO, &block);
if (retval) {
pctx.errcode = retval;
fix_problem(ctx, PR_3_ERR_LPF_NEW_DIR_BLOCK, &pctx);
return 0;
}
retval = ext2fs_write_dir_block4(fs, blk, block, 0, ino);
ext2fs_free_mem(&block);
if (retval) {
pctx.errcode = retval;
fix_problem(ctx, PR_3_ERR_LPF_WRITE_BLOCK, &pctx);
return 0;
}
/*
* Finally, create the directory link
*/
pctx.errcode = ext2fs_link(fs, EXT2_ROOT_INO, name, ino, EXT2_FT_DIR);
if (pctx.errcode == EXT2_ET_DIR_NO_SPACE) {
pctx.errcode = ext2fs_expand_dir(fs, EXT2_ROOT_INO);
if (pctx.errcode)
goto link_error;
pctx.errcode = ext2fs_link(fs, EXT2_ROOT_INO, name, ino,
EXT2_FT_DIR);
}
if (pctx.errcode) {
link_error:
pctx.str = "ext2fs_link";
fix_problem(ctx, PR_3_CREATE_LPF_ERROR, &pctx);
return 0;
}
/*
* Miscellaneous bookkeeping that needs to be kept straight.
*/
e2fsck_add_dir_info(ctx, ino, EXT2_ROOT_INO);
e2fsck_adjust_inode_count(ctx, EXT2_ROOT_INO, 1);
ext2fs_icount_store(ctx->inode_count, ino, 2);
ext2fs_icount_store(ctx->inode_link_info, ino, 2);
ctx->lost_and_found = ino;
quota_data_add(ctx->qctx, &inode, ino, fs->blocksize);
quota_data_inodes(ctx->qctx, &inode, ino, +1);
#if 0
printf("/lost+found created; inode #%lu\n", ino);
#endif
return ino;
}
