1997-04-26 17:21:57 +04:00
|
|
|
/*
|
|
|
|
* get_pathname.c --- do directry/inode -> name translation
|
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|
*
|
1997-04-29 20:17:09 +04:00
|
|
|
* Copyright (C) 1993, 1994, 1995 Theodore Ts'o.
|
|
|
|
*
|
|
|
|
* %Begin-Header%
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|
* This file may be redistributed under the terms of the GNU Public
|
|
|
|
* License.
|
|
|
|
* %End-Header%
|
|
|
|
*
|
|
|
|
* ext2fs_get_pathname(fs, dir, ino, name)
|
|
|
|
*
|
|
|
|
* This function translates takes two inode numbers into a
|
|
|
|
* string, placing the result in <name>. <dir> is the containing
|
|
|
|
* directory inode, and <ino> is the inode number itself. If
|
|
|
|
* <ino> is zero, then ext2fs_get_pathname will return pathname
|
|
|
|
* of the the directory <dir>.
|
|
|
|
*
|
1997-04-26 17:21:57 +04:00
|
|
|
*/
|
|
|
|
|
|
|
|
#include <stdio.h>
|
|
|
|
#include <string.h>
|
1997-08-11 03:07:40 +04:00
|
|
|
#if HAVE_UNISTD_H
|
1997-04-26 17:21:57 +04:00
|
|
|
#include <unistd.h>
|
1997-08-11 03:07:40 +04:00
|
|
|
#endif
|
1997-04-26 17:34:30 +04:00
|
|
|
|
Many files:
inode.c (ext2fs_open_inode_scan): Initialize the group variables
so that we don't need to call get_next_blockgroup() the first
time around. Saves a bit of time, and prevents us from
needing to assign -1 to current_group (which is an unsigned
value).
icount.c (insert_icount_el): Cast the estimated number of inodes
from a float to an ino_t.
alloc.c, alloc_tables.c, badlbocks.c, bb_compat.c, bb_inode.c,
bitmaps.c, bitops.c, block.c, bmap.c, bmove.c, brel_ma.c,
check_desc.c, closefs.c, cmp_bitmaps.c, dblist.c,
dblist_dir.c, dir_iterate.c, dirblock.c, dupfs.c, expanddir.c,
ext2fs.h, fileio.c, freefs.c, get_pathname.c, getsize.c,
icount.c, initialize.c, inline.c, inode.c, irel_ma.c,
ismounted.c, link.c, lookup.c, mkdir.c, namei.c, native.c,
newdir.c, openfs.c, read_bb.c, read_bb_file.c, rs_bitmap.c,
rw_bitmaps.c, swapfs.c, test_io.c, tst_badblocks.c,
tst_getsize.c, tst_iscan.c, unix_io.c, unlink.c, valid_blk.c,
version.c: If EXT2_FLAT_INCLUDES is defined, then assume all
of the ext2-specific header files are in a flat directory.
block.c, bmove.c, dirblock.c, fileio.c: Explicitly cast
all assignments from void * to be compatible with C++.
closefs.c (ext2fs_flush): Add a call to io_channel_flush() to
make sure the contents of the disk are flushed to disk.
dblist.c (ext2fs_add_dir_block): Change new to be new_entry to
avoid C++ namespace clash.
bitmaps.c (ext2fs_copy_bitmap): Change new to be new_map to
avoid C++ namespace clash.
ext2fs.h, bb_inode.c, block.c, bmove.c, brel.h, brel_ma.c,
irel.h, irel_ma.c, dblist.c, dblist_dir.c, dir_iterate.c,
ext2fsP.h, expanddir.c, get_pathname.c, inode.c, link.c,
unlink.c: Change private to be priv_data (to avoid C++
namespace clash)
1998-01-19 17:47:53 +03:00
|
|
|
#include "ext2_fs.h"
|
1997-04-26 17:21:57 +04:00
|
|
|
#include "ext2fs.h"
|
|
|
|
|
|
|
|
struct get_pathname_struct {
|
Many files:
alloc.c, bb_inode.c, bitmaps.c, bitops.h, block.c, bmap.c, bmove.c,
brel.h, cmp_bitmaps.c, dblist.c, dblist_dir.c, dir_iterate.c,
expanddir.c, ext2fs.h, ext2fsP.h, fileio.c, finddev.c, get_pathname.c,
icount.c, inode.c, irel.h, irel_ma.c, ismounted.c, link.c, lookup.c,
mkdir.c, mkjournal.c, namei.c, newdir.c, read_bb_file.c, test_io.c,
tst_iscan.c, unix_io.c, unlink.c: Change use of ino_t to ext2_ino_t,
to protect applications that attempt to compile
-D_FILE_OFFSET_BITS=64, since this inexplicably changes ino_t(!?). So
we use ext2_ino_t to avoid an unexpected ABI change.
2001-01-11 07:54:39 +03:00
|
|
|
ext2_ino_t search_ino;
|
|
|
|
ext2_ino_t parent;
|
1997-04-26 17:21:57 +04:00
|
|
|
char *name;
|
|
|
|
errcode_t errcode;
|
|
|
|
};
|
|
|
|
|
1997-08-11 03:07:40 +04:00
|
|
|
#ifdef __TURBOC__
|
Many files:
alloc.c, bb_inode.c, bitmaps.c, bitops.h, block.c, bmap.c, bmove.c,
brel.h, cmp_bitmaps.c, dblist.c, dblist_dir.c, dir_iterate.c,
expanddir.c, ext2fs.h, ext2fsP.h, fileio.c, finddev.c, get_pathname.c,
icount.c, inode.c, irel.h, irel_ma.c, ismounted.c, link.c, lookup.c,
mkdir.c, mkjournal.c, namei.c, newdir.c, read_bb_file.c, test_io.c,
tst_iscan.c, unix_io.c, unlink.c: Change use of ino_t to ext2_ino_t,
to protect applications that attempt to compile
-D_FILE_OFFSET_BITS=64, since this inexplicably changes ino_t(!?). So
we use ext2_ino_t to avoid an unexpected ABI change.
2001-01-11 07:54:39 +03:00
|
|
|
#pragma argsused
|
1997-08-11 03:07:40 +04:00
|
|
|
#endif
|
1997-04-26 17:21:57 +04:00
|
|
|
static int get_pathname_proc(struct ext2_dir_entry *dirent,
|
2003-12-07 09:28:50 +03:00
|
|
|
int offset EXT2FS_ATTR((unused)),
|
|
|
|
int blocksize EXT2FS_ATTR((unused)),
|
|
|
|
char *buf EXT2FS_ATTR((unused)),
|
Many files:
inode.c (ext2fs_open_inode_scan): Initialize the group variables
so that we don't need to call get_next_blockgroup() the first
time around. Saves a bit of time, and prevents us from
needing to assign -1 to current_group (which is an unsigned
value).
icount.c (insert_icount_el): Cast the estimated number of inodes
from a float to an ino_t.
alloc.c, alloc_tables.c, badlbocks.c, bb_compat.c, bb_inode.c,
bitmaps.c, bitops.c, block.c, bmap.c, bmove.c, brel_ma.c,
check_desc.c, closefs.c, cmp_bitmaps.c, dblist.c,
dblist_dir.c, dir_iterate.c, dirblock.c, dupfs.c, expanddir.c,
ext2fs.h, fileio.c, freefs.c, get_pathname.c, getsize.c,
icount.c, initialize.c, inline.c, inode.c, irel_ma.c,
ismounted.c, link.c, lookup.c, mkdir.c, namei.c, native.c,
newdir.c, openfs.c, read_bb.c, read_bb_file.c, rs_bitmap.c,
rw_bitmaps.c, swapfs.c, test_io.c, tst_badblocks.c,
tst_getsize.c, tst_iscan.c, unix_io.c, unlink.c, valid_blk.c,
version.c: If EXT2_FLAT_INCLUDES is defined, then assume all
of the ext2-specific header files are in a flat directory.
block.c, bmove.c, dirblock.c, fileio.c: Explicitly cast
all assignments from void * to be compatible with C++.
closefs.c (ext2fs_flush): Add a call to io_channel_flush() to
make sure the contents of the disk are flushed to disk.
dblist.c (ext2fs_add_dir_block): Change new to be new_entry to
avoid C++ namespace clash.
bitmaps.c (ext2fs_copy_bitmap): Change new to be new_map to
avoid C++ namespace clash.
ext2fs.h, bb_inode.c, block.c, bmove.c, brel.h, brel_ma.c,
irel.h, irel_ma.c, dblist.c, dblist_dir.c, dir_iterate.c,
ext2fsP.h, expanddir.c, get_pathname.c, inode.c, link.c,
unlink.c: Change private to be priv_data (to avoid C++
namespace clash)
1998-01-19 17:47:53 +03:00
|
|
|
void *priv_data)
|
1997-04-26 17:21:57 +04:00
|
|
|
{
|
|
|
|
struct get_pathname_struct *gp;
|
1997-10-26 06:41:24 +03:00
|
|
|
errcode_t retval;
|
1997-04-26 17:21:57 +04:00
|
|
|
|
Many files:
inode.c (ext2fs_open_inode_scan): Initialize the group variables
so that we don't need to call get_next_blockgroup() the first
time around. Saves a bit of time, and prevents us from
needing to assign -1 to current_group (which is an unsigned
value).
icount.c (insert_icount_el): Cast the estimated number of inodes
from a float to an ino_t.
alloc.c, alloc_tables.c, badlbocks.c, bb_compat.c, bb_inode.c,
bitmaps.c, bitops.c, block.c, bmap.c, bmove.c, brel_ma.c,
check_desc.c, closefs.c, cmp_bitmaps.c, dblist.c,
dblist_dir.c, dir_iterate.c, dirblock.c, dupfs.c, expanddir.c,
ext2fs.h, fileio.c, freefs.c, get_pathname.c, getsize.c,
icount.c, initialize.c, inline.c, inode.c, irel_ma.c,
ismounted.c, link.c, lookup.c, mkdir.c, namei.c, native.c,
newdir.c, openfs.c, read_bb.c, read_bb_file.c, rs_bitmap.c,
rw_bitmaps.c, swapfs.c, test_io.c, tst_badblocks.c,
tst_getsize.c, tst_iscan.c, unix_io.c, unlink.c, valid_blk.c,
version.c: If EXT2_FLAT_INCLUDES is defined, then assume all
of the ext2-specific header files are in a flat directory.
block.c, bmove.c, dirblock.c, fileio.c: Explicitly cast
all assignments from void * to be compatible with C++.
closefs.c (ext2fs_flush): Add a call to io_channel_flush() to
make sure the contents of the disk are flushed to disk.
dblist.c (ext2fs_add_dir_block): Change new to be new_entry to
avoid C++ namespace clash.
bitmaps.c (ext2fs_copy_bitmap): Change new to be new_map to
avoid C++ namespace clash.
ext2fs.h, bb_inode.c, block.c, bmove.c, brel.h, brel_ma.c,
irel.h, irel_ma.c, dblist.c, dblist_dir.c, dir_iterate.c,
ext2fsP.h, expanddir.c, get_pathname.c, inode.c, link.c,
unlink.c: Change private to be priv_data (to avoid C++
namespace clash)
1998-01-19 17:47:53 +03:00
|
|
|
gp = (struct get_pathname_struct *) priv_data;
|
1997-04-26 17:21:57 +04:00
|
|
|
|
Many files:
ext2fs.h: Add new superblock fields (s_algorithm_usage_bitmap,
s_prealloc_blocks, s_prealloc_dir_blocks). Added conditional defines
of new features COMPAT_DIR_PREALLOC, RO_COMPAT_LARGE_FILE
RO_COMPAT_BTREE_DIR, INCOMPAT_COMPRESSION, INCOMPAT_DIRNAME_SIZE.
Changed the library to declare that we support COMPAT_DIR_PREALLOC,
INCOMPAT_DIRNAME_SIZE, RO_COMPAT_LARGE_FILE.
fileio.c: Rename function ext2fs_file_llseek to be ext2fs_file_lseek,
which is more accurate.
block.c: Add new function ext2fs_block_iterate3 which calls the
iterator function with the blockcount argument of type blkcnt_t. This
version of the function is allowed to handle large files; the other
fucntions are not.
ext2fs.h: Add new type blkcnt_t
ext2_err.et.in: Add error code EXT2_ET_FILE_TOO_BIG
block.c (ext2fs_block_iterate2): Fix bug where the block count field
wasn't getting correctly incremented for sparse files when the
indirect or doubly-indirect block specified in the inode was zero.
unlink.c (unlink_proc):
lookup.c (lookup_proc):
link.c (link_proc):
get_pathname.c (get_pathname_proc):
dir_iterate.c (ext2fs_process_dir_block): Mask off high 8 bits from
dirent->name_len, so it can be used for other purposes.
ext2fs.h: Add definition of EXT2_FEATURE_INCOMPAT_DIRNAME_SIZE, and
indicate that we have support for this incompatible option.
1998-03-23 05:06:52 +03:00
|
|
|
if (((dirent->name_len & 0xFF) == 2) &&
|
1997-04-26 17:21:57 +04:00
|
|
|
!strncmp(dirent->name, "..", 2))
|
|
|
|
gp->parent = dirent->inode;
|
|
|
|
if (dirent->inode == gp->search_ino) {
|
Many files:
ext2fs.h: Add new superblock fields (s_algorithm_usage_bitmap,
s_prealloc_blocks, s_prealloc_dir_blocks). Added conditional defines
of new features COMPAT_DIR_PREALLOC, RO_COMPAT_LARGE_FILE
RO_COMPAT_BTREE_DIR, INCOMPAT_COMPRESSION, INCOMPAT_DIRNAME_SIZE.
Changed the library to declare that we support COMPAT_DIR_PREALLOC,
INCOMPAT_DIRNAME_SIZE, RO_COMPAT_LARGE_FILE.
fileio.c: Rename function ext2fs_file_llseek to be ext2fs_file_lseek,
which is more accurate.
block.c: Add new function ext2fs_block_iterate3 which calls the
iterator function with the blockcount argument of type blkcnt_t. This
version of the function is allowed to handle large files; the other
fucntions are not.
ext2fs.h: Add new type blkcnt_t
ext2_err.et.in: Add error code EXT2_ET_FILE_TOO_BIG
block.c (ext2fs_block_iterate2): Fix bug where the block count field
wasn't getting correctly incremented for sparse files when the
indirect or doubly-indirect block specified in the inode was zero.
unlink.c (unlink_proc):
lookup.c (lookup_proc):
link.c (link_proc):
get_pathname.c (get_pathname_proc):
dir_iterate.c (ext2fs_process_dir_block): Mask off high 8 bits from
dirent->name_len, so it can be used for other purposes.
ext2fs.h: Add definition of EXT2_FEATURE_INCOMPAT_DIRNAME_SIZE, and
indicate that we have support for this incompatible option.
1998-03-23 05:06:52 +03:00
|
|
|
retval = ext2fs_get_mem((dirent->name_len & 0xFF) + 1,
|
2003-08-01 17:41:07 +04:00
|
|
|
&gp->name);
|
1998-09-03 05:22:57 +04:00
|
|
|
if (retval) {
|
|
|
|
gp->errcode = retval;
|
1997-04-26 17:21:57 +04:00
|
|
|
return DIRENT_ABORT;
|
|
|
|
}
|
Many files:
ext2fs.h: Add new superblock fields (s_algorithm_usage_bitmap,
s_prealloc_blocks, s_prealloc_dir_blocks). Added conditional defines
of new features COMPAT_DIR_PREALLOC, RO_COMPAT_LARGE_FILE
RO_COMPAT_BTREE_DIR, INCOMPAT_COMPRESSION, INCOMPAT_DIRNAME_SIZE.
Changed the library to declare that we support COMPAT_DIR_PREALLOC,
INCOMPAT_DIRNAME_SIZE, RO_COMPAT_LARGE_FILE.
fileio.c: Rename function ext2fs_file_llseek to be ext2fs_file_lseek,
which is more accurate.
block.c: Add new function ext2fs_block_iterate3 which calls the
iterator function with the blockcount argument of type blkcnt_t. This
version of the function is allowed to handle large files; the other
fucntions are not.
ext2fs.h: Add new type blkcnt_t
ext2_err.et.in: Add error code EXT2_ET_FILE_TOO_BIG
block.c (ext2fs_block_iterate2): Fix bug where the block count field
wasn't getting correctly incremented for sparse files when the
indirect or doubly-indirect block specified in the inode was zero.
unlink.c (unlink_proc):
lookup.c (lookup_proc):
link.c (link_proc):
get_pathname.c (get_pathname_proc):
dir_iterate.c (ext2fs_process_dir_block): Mask off high 8 bits from
dirent->name_len, so it can be used for other purposes.
ext2fs.h: Add definition of EXT2_FEATURE_INCOMPAT_DIRNAME_SIZE, and
indicate that we have support for this incompatible option.
1998-03-23 05:06:52 +03:00
|
|
|
strncpy(gp->name, dirent->name, (dirent->name_len & 0xFF));
|
|
|
|
gp->name[dirent->name_len & 0xFF] = '\0';
|
1997-04-26 17:21:57 +04:00
|
|
|
return DIRENT_ABORT;
|
|
|
|
}
|
|
|
|
return 0;
|
|
|
|
}
|
|
|
|
|
Many files:
alloc.c, bb_inode.c, bitmaps.c, bitops.h, block.c, bmap.c, bmove.c,
brel.h, cmp_bitmaps.c, dblist.c, dblist_dir.c, dir_iterate.c,
expanddir.c, ext2fs.h, ext2fsP.h, fileio.c, finddev.c, get_pathname.c,
icount.c, inode.c, irel.h, irel_ma.c, ismounted.c, link.c, lookup.c,
mkdir.c, mkjournal.c, namei.c, newdir.c, read_bb_file.c, test_io.c,
tst_iscan.c, unix_io.c, unlink.c: Change use of ino_t to ext2_ino_t,
to protect applications that attempt to compile
-D_FILE_OFFSET_BITS=64, since this inexplicably changes ino_t(!?). So
we use ext2_ino_t to avoid an unexpected ABI change.
2001-01-11 07:54:39 +03:00
|
|
|
static errcode_t ext2fs_get_pathname_int(ext2_filsys fs, ext2_ino_t dir,
|
|
|
|
ext2_ino_t ino, int maxdepth,
|
|
|
|
char *buf, char **name)
|
1997-04-26 17:21:57 +04:00
|
|
|
{
|
|
|
|
struct get_pathname_struct gp;
|
|
|
|
char *parent_name, *ret;
|
|
|
|
errcode_t retval;
|
|
|
|
|
|
|
|
if (dir == ino) {
|
2003-08-01 17:41:07 +04:00
|
|
|
retval = ext2fs_get_mem(2, name);
|
1997-10-26 06:41:24 +03:00
|
|
|
if (retval)
|
|
|
|
return retval;
|
1997-04-26 17:21:57 +04:00
|
|
|
strcpy(*name, (dir == EXT2_ROOT_INO) ? "/" : ".");
|
|
|
|
return 0;
|
|
|
|
}
|
|
|
|
|
|
|
|
if (!dir || (maxdepth < 0)) {
|
2003-08-01 17:41:07 +04:00
|
|
|
retval = ext2fs_get_mem(4, name);
|
1997-10-26 06:41:24 +03:00
|
|
|
if (retval)
|
|
|
|
return retval;
|
1997-04-26 17:21:57 +04:00
|
|
|
strcpy(*name, "...");
|
|
|
|
return 0;
|
|
|
|
}
|
|
|
|
|
|
|
|
gp.search_ino = ino;
|
|
|
|
gp.parent = 0;
|
|
|
|
gp.name = 0;
|
|
|
|
gp.errcode = 0;
|
|
|
|
|
|
|
|
retval = ext2fs_dir_iterate(fs, dir, 0, buf, get_pathname_proc, &gp);
|
|
|
|
if (retval)
|
|
|
|
goto cleanup;
|
|
|
|
if (gp.errcode) {
|
|
|
|
retval = gp.errcode;
|
|
|
|
goto cleanup;
|
|
|
|
}
|
|
|
|
|
|
|
|
retval = ext2fs_get_pathname_int(fs, gp.parent, dir, maxdepth-1,
|
|
|
|
buf, &parent_name);
|
|
|
|
if (retval)
|
|
|
|
goto cleanup;
|
|
|
|
if (!ino) {
|
|
|
|
*name = parent_name;
|
|
|
|
return 0;
|
|
|
|
}
|
|
|
|
|
1997-04-26 17:34:30 +04:00
|
|
|
if (gp.name)
|
1997-10-26 06:41:24 +03:00
|
|
|
retval = ext2fs_get_mem(strlen(parent_name)+strlen(gp.name)+2,
|
2003-08-01 17:41:07 +04:00
|
|
|
&ret);
|
1997-04-26 17:34:30 +04:00
|
|
|
else
|
2003-08-01 17:41:07 +04:00
|
|
|
retval = ext2fs_get_mem(strlen(parent_name)+5, &ret);
|
1997-10-26 06:41:24 +03:00
|
|
|
if (retval)
|
1997-04-26 17:21:57 +04:00
|
|
|
goto cleanup;
|
1997-10-26 06:41:24 +03:00
|
|
|
|
1997-04-26 17:21:57 +04:00
|
|
|
ret[0] = 0;
|
|
|
|
if (parent_name[1])
|
|
|
|
strcat(ret, parent_name);
|
|
|
|
strcat(ret, "/");
|
|
|
|
if (gp.name)
|
|
|
|
strcat(ret, gp.name);
|
|
|
|
else
|
|
|
|
strcat(ret, "???");
|
|
|
|
*name = ret;
|
2003-08-01 17:41:07 +04:00
|
|
|
ext2fs_free_mem(&parent_name);
|
1997-04-26 17:21:57 +04:00
|
|
|
retval = 0;
|
|
|
|
|
|
|
|
cleanup:
|
|
|
|
if (gp.name)
|
2003-08-01 17:41:07 +04:00
|
|
|
ext2fs_free_mem(&gp.name);
|
1997-04-26 17:21:57 +04:00
|
|
|
return retval;
|
|
|
|
}
|
|
|
|
|
Many files:
alloc.c, bb_inode.c, bitmaps.c, bitops.h, block.c, bmap.c, bmove.c,
brel.h, cmp_bitmaps.c, dblist.c, dblist_dir.c, dir_iterate.c,
expanddir.c, ext2fs.h, ext2fsP.h, fileio.c, finddev.c, get_pathname.c,
icount.c, inode.c, irel.h, irel_ma.c, ismounted.c, link.c, lookup.c,
mkdir.c, mkjournal.c, namei.c, newdir.c, read_bb_file.c, test_io.c,
tst_iscan.c, unix_io.c, unlink.c: Change use of ino_t to ext2_ino_t,
to protect applications that attempt to compile
-D_FILE_OFFSET_BITS=64, since this inexplicably changes ino_t(!?). So
we use ext2_ino_t to avoid an unexpected ABI change.
2001-01-11 07:54:39 +03:00
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errcode_t ext2fs_get_pathname(ext2_filsys fs, ext2_ino_t dir, ext2_ino_t ino,
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1997-04-26 17:21:57 +04:00
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char **name)
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{
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char *buf;
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errcode_t retval;
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1997-04-26 17:34:30 +04:00
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EXT2_CHECK_MAGIC(fs, EXT2_ET_MAGIC_EXT2FS_FILSYS);
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2003-08-01 17:41:07 +04:00
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retval = ext2fs_get_mem(fs->blocksize, &buf);
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1997-10-26 06:41:24 +03:00
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if (retval)
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return retval;
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1997-04-26 17:21:57 +04:00
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if (dir == ino)
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ino = 0;
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retval = ext2fs_get_pathname_int(fs, dir, ino, 32, buf, name);
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2003-08-01 17:41:07 +04:00
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ext2fs_free_mem(&buf);
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1997-04-26 17:21:57 +04:00
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return retval;
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}
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