errcode_t ext2fs_expand_dir(ext2_filsys fs, ext2_ino_t dir)
{
errcode_t retval;
struct expand_dir_struct es;
struct ext2_inode inode;
EXT2_CHECK_MAGIC(fs, EXT2_ET_MAGIC_EXT2FS_FILSYS);
if (!(fs->flags & EXT2_FLAG_RW))
return EXT2_ET_RO_FILSYS;
if (!fs->block_map)
return EXT2_ET_NO_BLOCK_BITMAP;
retval = ext2fs_check_directory(fs, dir);
if (retval)
return retval;
es.done = 0;
es.err = 0;
es.goal = 0;
es.newblocks = 0;
es.dir = dir;
retval = ext2fs_block_iterate3(fs, dir, BLOCK_FLAG_APPEND,
0, expand_dir_proc, &es);
if (es.err)
return es.err;
if (!es.done)
return EXT2_ET_EXPAND_DIR_ERR;
/*
* Update the size and block count fields in the inode.
*/
retval = ext2fs_read_inode(fs, dir, &inode);
if (retval)
return retval;
inode.i_size += fs->blocksize;
ext2fs_iblk_add_blocks(fs, &inode, es.newblocks);
retval = ext2fs_write_inode(fs, dir, &inode);
if (retval)
return retval;
return 0;
}
errcode_t ext2fs_dir_iterate2(ext2_filsys fs,
ext2_ino_t dir,
int flags,
char *block_buf,
int (*func)(ext2_ino_t dir,
int entry,
struct ext2_dir_entry *dirent,
int offset,
int blocksize,
char *buf,
void *priv_data),
void *priv_data)
{
struct dir_context ctx;
errcode_t retval;
EXT2_CHECK_MAGIC(fs, EXT2_ET_MAGIC_EXT2FS_FILSYS);
retval = ext2fs_check_directory(fs, dir);
if (retval)
return retval;
ctx.dir = dir;
ctx.flags = flags;
if (block_buf)
ctx.buf = block_buf;
else {
retval = ext2fs_get_mem(fs->blocksize, (void **) &ctx.buf);
if (retval)
return retval;
}
ctx.func = func;
ctx.priv_data = priv_data;
ctx.errcode = 0;
retval = ext2fs_block_iterate2(fs, dir, 0, 0,
ext2fs_process_dir_block, &ctx);
if (!block_buf)
ext2fs_free_mem((void **) &ctx.buf);
if (retval)
return retval;
return ctx.errcode;
}
/*
* 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;
}
/* Name: create_hard_link()
*
* Description:
*
* This function creates a hard link to an existing file
*
* Algorithm:
*
* Check input parameters
* Check to see if the new file name already exists
* Make sure the new file is not an existing directory
* If the file exists, remove it if the del_current flag is set
* Add the new file name and it's inode to the current directory.
* Get the inode structure for the current inode number
* update the number of links
* Write the inode structure back out to the file system.
*
* Global Variables:
*
* None.
*
* Arguments:
*
* ext2_filsys fs; The current file system
* ext2_ino_t cwd; The current working directory
* ext2_ino_t new_file_ino; The inode number of the new file
* char *newfile; The name of the new file
* int ln_flags; Flags affecting hard_link action
*
* Return Values:
*
* 0 - the new file link was created successfully
* any other value indicates an error
*
* Author: Keith W. Sheffield
* Date: 03/05/2002
*
* Modification History:
*
* MM/DD/YY Name Description
* 06/30/02 K.Sheffield Directory link flag is now based on the
* type of file being linked. This was
* causing problems if a directory was
* renamed.
*/
long
create_hard_link(ext2_filsys fs, ext2_ino_t cwd, ext2_ino_t new_file_ino,
char *newfile, int ln_flags)
{
ext2_ino_t curr_ino;
struct ext2_inode inode;
long retval;
int dir_flag;
if (fs == NULL || newfile == NULL)
{
fputs("Invalid input parameter. Exiting create_hard_link() with -1\n",
stderr);
return (-1);
}
/* check to see if the file name already exists in the current directory */
if ((retval = ext2fs_namei(fs, cwd, cwd, newfile, &curr_ino)))
{
if (retval != EXT2_ET_FILE_NOT_FOUND)
{
fprintf(stderr, "%s\n",error_message(retval));
return(retval);
}
}
/* file name exists, let's see if is a directory */
else if ((retval = ext2fs_check_directory(fs, curr_ino)))
{
if (retval != EXT2_ET_NO_DIRECTORY)
{
fprintf(stderr, "%s\n",error_message(retval));
return(retval);
}
/* delete the existing file if needed */
if ((ln_flags & E2T_FORCE) &&
(curr_ino != new_file_ino))
{
if ((retval = rm_file(fs, cwd, newfile, curr_ino)))
{
fprintf(stderr, "%s\n",error_message(retval));
return(retval);
}
}
else
{
fprintf(stderr, "ln: %s: File exists\n", newfile);
return(1);
}
}
else
{
/* if we get here, then it's an existing directory */
fprintf(stderr, "%s is a directory!\n", newfile);
return(1);
}
/* read the inode associated with the file */
if ((retval = read_inode(fs, new_file_ino, &inode)))
{
fprintf(stderr, "%s\n", error_message(retval));
return (retval);
}
/* determine how to link into the directory based on the type of file */
switch(inode.i_mode & LINUX_S_IFMT)
{
case LINUX_S_IFREG:
dir_flag = EXT2_FT_REG_FILE;
break;
case LINUX_S_IFLNK:
dir_flag = EXT2_FT_SYMLINK;
break;
case LINUX_S_IFDIR:
dir_flag = EXT2_FT_DIR;
break;
case LINUX_S_IFSOCK:
dir_flag = EXT2_FT_SOCK;
break;
case LINUX_S_IFBLK:
dir_flag = EXT2_FT_BLKDEV;
break;
case LINUX_S_IFCHR:
dir_flag = EXT2_FT_CHRDEV;
break;
case LINUX_S_IFIFO:
dir_flag = EXT2_FT_FIFO;
break;
default:
dir_flag = EXT2_FT_UNKNOWN;
break;
}
if ((retval = ext2fs_link(fs, cwd, newfile, new_file_ino, dir_flag)))
{
/* check to see if we ran out of space in the directory */
if (retval == EXT2_ET_DIR_NO_SPACE)
{
/* try resizing the directory and try again */
if (0 == (retval = ext2fs_expand_dir(fs, cwd)))
retval = ext2fs_link(fs, cwd, newfile, new_file_ino, dir_flag);
}
if (retval)
{
fprintf(stderr, "%s\n", error_message(retval));
return retval;
}
}
/* update the inode stat information */
if ((ln_flags & E2T_DO_MV) == 0)
{
inode.i_links_count++;
if ((retval = write_inode(fs, new_file_ino, &inode)))
{
fprintf(stderr, "%s\n", error_message(retval));
return (retval);
}
}
return(0);
} /* end of create_hard_link */
/* Name: do_mv()
*
* Description:
*
* This function reads the command line arguments and moves or renames files
* in an ext2fs file system
*
* Algorithm:
*
* Read any command line switches
* Get the first source file specification
* If we are performing a file swap, call do_swap()
* Open the file system
* Get the destination and determine if it is a directory
* If not, then get the destination's directory and basename
* Also check that the number of source files are no more than one
* For each source file
* Get the directory and basename of the source file
* Determine the inode number for the source file
* Create the link
* Unlink the original source file.
*
* Global Variables:
*
* None
*
* Arguments:
*
* int argc; The number of arguments
* char *argv[]; The command line arguments
*
* Return Values:
*
* 0 - the file was move successfully
* an error occurred.
*
* Author: Keith W. Sheffield
* Date: 03/20/2002
*
* Modification History:
*
* MM/DD/YY Name Description
*/
long
do_mv(int argc, char *argv[])
{
int verbose=0;
int force=0;
int swap_files=0;
int errcnt=0;
char *cur_filesys = NULL;
ext2_filsys fs = NULL;
ext2_ino_t root;
ext2_ino_t srcd;
ext2_ino_t destd;
ext2_ino_t source_file;
char *src_dir;
char *dest_dir;
char *src_name;
char *dest_name;
char *result_name;
long retval;
int c;
int curidx;
#ifdef HAVE_OPTRESET
optreset = 1; /* Makes BSD getopt happy */
#endif
while ((c = getopt(argc, argv, "vfs")) != EOF)
{
switch (c)
{
case 'v':
verbose = 1;
break;
case 'f':
force = E2T_FORCE;
break;
case 's':
swap_files = 1;
break;
default:
errcnt++;
break;
}
}
curidx = optind;
force |= E2T_DO_MV;
if (errcnt || argc < curidx+2)
{
fputs(USAGE, stderr);
return(1);
}
if (swap_files)
return(do_swap(force, verbose, curidx, argc, argv));
cur_filesys = argv[curidx++];
if (NULL == (src_dir = strchr(cur_filesys, ':')))
{
fprintf(stderr, "Invalid file specification: %s\n", cur_filesys);
return(1);
}
*src_dir++ = '\0';
if ((retval = open_filesystem(cur_filesys, &fs, &root, 1)))
{
return retval;
}
/* get the destination directory */
dest_name = NULL;
if (strcmp(dest_dir = argv[argc-1], ".") != 0)
{
/* check to see if the file name already exists in the current
* directory and also see if it is a directory.
*/
if ((retval = ext2fs_namei(fs, root, root, dest_dir, &destd)) ||
(retval = ext2fs_check_directory(fs, destd)))
{
if (retval != EXT2_ET_FILE_NOT_FOUND &&
retval != EXT2_ET_NO_DIRECTORY)
{
fprintf(stderr, "%s\n",error_message(retval));
ext2fs_close(fs);
return(retval);
}
/* ok, so it's either not there or it's not a directory, so
* get the real destination directory and file name.
*/
if (curidx+1 < argc)
{
fprintf(stderr, "%s must be a directory!\n", dest_dir);
ext2fs_close(fs);
return(1);
}
if (get_file_parts(fs, root, dest_dir, &destd, &dest_dir,
&dest_name))
{
ext2fs_close(fs);
return(-1);
}
}
else /* we have a directory!!! */
dest_name = NULL;
}
else
{
destd = root;
dest_name = NULL;
}
do
{
/* move to the source directory */
if (get_file_parts(fs, root, src_dir, &srcd, &src_dir, &src_name))
{
ext2fs_close(fs);
return(-1);
}
/* get the inode number for the source file */
if ((retval = ext2fs_namei(fs, srcd, srcd, src_name, &source_file)))
{
fprintf(stderr, "%s: source file %s\n",error_message(retval),
src_name);
ext2fs_close(fs);
return(retval);
}
result_name = (dest_name) ? dest_name : src_name;
/* now create the link */
if ((retval = create_hard_link(fs, destd, source_file, result_name,
force)))
{
fprintf(stderr, "Error renaming %s/%s as %s/%s\n",
((src_dir == NULL) ? "." : src_dir), src_name,
((dest_dir == NULL) ? "." : dest_dir), result_name);
ext2fs_close(fs);
return(1);
}
if ((retval = ext2fs_unlink(fs, srcd, src_name, 0, 0)))
{
fprintf(stderr, "%s - %s\n", src_name, error_message(retval));
ext2fs_close(fs);
return(retval);
}
if (verbose)
fprintf(stderr, "moved %s/%s as %s/%s\n",
((src_dir == NULL) ? "." : src_dir), src_name,
((dest_dir == NULL) ? "." : dest_dir), result_name);
src_dir = argv[curidx++];
}
while (curidx < argc);
ext2fs_close(fs);
return(0);
} /* end of do_mv */
/*
* 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;
}
