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[ext2fs] update ext2fs to latest 

* Also drop nt_io_manager() as a function call and just use a direct ref to the manager.
This commit is contained in:
Pete Batard 2021-01-09 16:14:14 +00:00
parent fce645543f
commit 3056d54cc1
No known key found for this signature in database
GPG Key ID: 38E0CF5E69EDD671
31 changed files with 1365 additions and 369 deletions
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1
.vs/ext2fs.vcxproj
View File

@ -53,6 +53,7 @@
<ClCompile Include="..\src\ext2fs\crc32c.c" />
<ClCompile Include="..\src\ext2fs\csum.c" />
<ClCompile Include="..\src\ext2fs\dirblock.c" />
<ClCompile Include="..\src\ext2fs\dirhash.c" />
<ClCompile Include="..\src\ext2fs\dir_iterate.c" />
<ClCompile Include="..\src\ext2fs\extent.c" />
<ClCompile Include="..\src\ext2fs\ext_attr.c" />

3
.vs/ext2fs.vcxproj.filters
View File

@ -162,6 +162,9 @@
<ClCompile Include="..\src\ext2fs\namei.c">
<Filter>Source Files</Filter>
</ClCompile>
<ClCompile Include="..\src\ext2fs\dirhash.c">
<Filter>Source Files</Filter>
</ClCompile>
</ItemGroup>
<ItemGroup>
<ClInclude Include="..\src\ext2fs\ext2_fs.h">

6
src/ext2fs/Makefile.am
View File

@ -1,8 +1,8 @@
noinst_LIBRARIES = libext2fs.a
libext2fs_a_SOURCES = alloc.c alloc_sb.c alloc_stats.c alloc_tables.c badblocks.c bb_inode.c \
bitmaps.c bitops.c blkmap64_ba.c blkmap64_rb.c blknum.c block.c bmap.c closefs.c crc16.c \
crc32c.c csum.c dirblock.c dir_iterate.c extent.c ext_attr.c extent.c fallocate.c fileio.c \
libext2fs_a_SOURCES = alloc.c alloc_sb.c alloc_stats.c alloc_tables.c badblocks.c bb_inode.c bitmaps.c \
bitops.c blkmap64_ba.c blkmap64_rb.c blknum.c block.c bmap.c closefs.c crc16.c crc32c.c \
csum.c dirblock.c dirhash.c dir_iterate.c extent.c ext_attr.c extent.c fallocate.c fileio.c \
freefs.c gen_bitmap.c gen_bitmap64.c get_num_dirs.c hashmap.c i_block.c ind_block.c initialize.c \
inline.c inline_data.c inode.c io_manager.c link.c lookup.c mkdir.c mkjournal.c namei.c mmp.c \
newdir.c nt_io.c openfs.c punch.c rbtree.c read_bb.c rw_bitmaps.c sha512.c symlink.c valid_blk.c

14
src/ext2fs/Makefile.in
View File

@ -104,7 +104,7 @@ am_libext2fs_a_OBJECTS = libext2fs_a-alloc.$(OBJEXT) \
libext2fs_a-block.$(OBJEXT) libext2fs_a-bmap.$(OBJEXT) \
libext2fs_a-closefs.$(OBJEXT) libext2fs_a-crc16.$(OBJEXT) \
libext2fs_a-crc32c.$(OBJEXT) libext2fs_a-csum.$(OBJEXT) \
libext2fs_a-dirblock.$(OBJEXT) \
libext2fs_a-dirblock.$(OBJEXT) libext2fs_a-dirhash.$(OBJEXT) \
libext2fs_a-dir_iterate.$(OBJEXT) libext2fs_a-extent.$(OBJEXT) \
libext2fs_a-ext_attr.$(OBJEXT) libext2fs_a-extent.$(OBJEXT) \
libext2fs_a-fallocate.$(OBJEXT) libext2fs_a-fileio.$(OBJEXT) \
@ -271,9 +271,9 @@ top_build_prefix = @top_build_prefix@
top_builddir = @top_builddir@
top_srcdir = @top_srcdir@
noinst_LIBRARIES = libext2fs.a
libext2fs_a_SOURCES = alloc.c alloc_sb.c alloc_stats.c alloc_tables.c badblocks.c bb_inode.c \
bitmaps.c bitops.c blkmap64_ba.c blkmap64_rb.c blknum.c block.c bmap.c closefs.c crc16.c \
crc32c.c csum.c dirblock.c dir_iterate.c extent.c ext_attr.c extent.c fallocate.c fileio.c \
libext2fs_a_SOURCES = alloc.c alloc_sb.c alloc_stats.c alloc_tables.c badblocks.c bb_inode.c bitmaps.c \
bitops.c blkmap64_ba.c blkmap64_rb.c blknum.c block.c bmap.c closefs.c crc16.c crc32c.c \
csum.c dirblock.c dirhash.c dir_iterate.c extent.c ext_attr.c extent.c fallocate.c fileio.c \
freefs.c gen_bitmap.c gen_bitmap64.c get_num_dirs.c hashmap.c i_block.c ind_block.c initialize.c \
inline.c inline_data.c inode.c io_manager.c link.c lookup.c mkdir.c mkjournal.c namei.c mmp.c \
newdir.c nt_io.c openfs.c punch.c rbtree.c read_bb.c rw_bitmaps.c sha512.c symlink.c valid_blk.c
@ -442,6 +442,12 @@ libext2fs_a-dirblock.o: dirblock.c
libext2fs_a-dirblock.obj: dirblock.c
$(AM_V_CC)$(CC) $(DEFS) $(DEFAULT_INCLUDES) $(INCLUDES) $(AM_CPPFLAGS) $(CPPFLAGS) $(libext2fs_a_CFLAGS) $(CFLAGS) -c -o libext2fs_a-dirblock.obj `if test -f 'dirblock.c'; then $(CYGPATH_W) 'dirblock.c'; else $(CYGPATH_W) '$(srcdir)/dirblock.c'; fi`
libext2fs_a-dirhash.o: dirhash.c
$(AM_V_CC)$(CC) $(DEFS) $(DEFAULT_INCLUDES) $(INCLUDES) $(AM_CPPFLAGS) $(CPPFLAGS) $(libext2fs_a_CFLAGS) $(CFLAGS) -c -o libext2fs_a-dirhash.o `test -f 'dirhash.c' || echo '$(srcdir)/'`dirhash.c
libext2fs_a-dirhash.obj: dirhash.c
$(AM_V_CC)$(CC) $(DEFS) $(DEFAULT_INCLUDES) $(INCLUDES) $(AM_CPPFLAGS) $(CPPFLAGS) $(libext2fs_a_CFLAGS) $(CFLAGS) -c -o libext2fs_a-dirhash.obj `if test -f 'dirhash.c'; then $(CYGPATH_W) 'dirhash.c'; else $(CYGPATH_W) '$(srcdir)/dirhash.c'; fi`
libext2fs_a-dir_iterate.o: dir_iterate.c
$(AM_V_CC)$(CC) $(DEFS) $(DEFAULT_INCLUDES) $(INCLUDES) $(AM_CPPFLAGS) $(CPPFLAGS) $(libext2fs_a_CFLAGS) $(CFLAGS) -c -o libext2fs_a-dir_iterate.o `test -f 'dir_iterate.c' || echo '$(srcdir)/'`dir_iterate.c

53
src/ext2fs/blknum.c
View File

@ -85,6 +85,22 @@ blk64_t ext2fs_inode_i_blocks(ext2_filsys fs,
(__u64)inode->osd2.linux2.l_i_blocks_hi << 32 : 0));
}
/*
* Return the inode i_blocks in stat (512 byte) units
*/
blk64_t ext2fs_get_stat_i_blocks(ext2_filsys fs,
struct ext2_inode *inode)
{
blk64_t ret = inode->i_blocks;
if (ext2fs_has_feature_huge_file(fs->super)) {
ret += ((long long) inode->osd2.linux2.l_i_blocks_hi) << 32;
if (inode->i_flags & EXT4_HUGE_FILE_FL)
ret *= (fs->blocksize / 512);
}
return ret;
}
/*
* Return the fs block count
*/
@ -185,9 +201,42 @@ struct ext2_group_desc *ext2fs_group_desc(ext2_filsys fs,
struct opaque_ext2_group_desc *gdp,
dgrp_t group)
{
int desc_size = EXT2_DESC_SIZE(fs->super) & ~7;
struct ext2_group_desc *ret_gdp;
errcode_t retval;
static char *buf = 0;
static int bufsize = 0;
blk64_t blk;
int desc_size = EXT2_DESC_SIZE(fs->super) & ~7;
int desc_per_blk = EXT2_DESC_PER_BLOCK(fs->super);
return (struct ext2_group_desc *)((char *)gdp + group * desc_size);
if (group > fs->group_desc_count)
return NULL;
if (gdp)
return (struct ext2_group_desc *)((char *)gdp +
group * desc_size);
/*
* If fs->group_desc wasn't read in when the file system was
* opened, then read it on demand here.
*/
if (bufsize < fs->blocksize)
ext2fs_free_mem(&buf);
if (!buf) {
retval = ext2fs_get_mem(fs->blocksize, &buf);
if (retval)
return NULL;
bufsize = fs->blocksize;
}
blk = ext2fs_descriptor_block_loc2(fs, fs->super->s_first_data_block,
group / desc_per_blk);
retval = io_channel_read_blk(fs->io, blk, 1, buf);
if (retval)
return NULL;
ret_gdp = (struct ext2_group_desc *)
(buf + ((group % desc_per_blk) * desc_size));
#ifdef WORDS_BIGENDIAN
ext2fs_swap_group_desc2(fs, ret_gdp);
#endif
return ret_gdp;
}
/* Do the same but as an ext4 group desc for internal use here */

29
src/ext2fs/closefs.c
View File

@ -293,6 +293,11 @@ errcode_t ext2fs_flush2(ext2_filsys fs, int flags)
EXT2_CHECK_MAGIC(fs, EXT2_ET_MAGIC_EXT2FS_FILSYS);
if ((fs->flags & EXT2_FLAG_SUPER_ONLY) == 0 &&
!ext2fs_has_feature_journal_dev(fs->super) &&
fs->group_desc == NULL)
return EXT2_ET_NO_GDESC;
fs_state = fs->super->s_state;
feature_incompat = fs->super->s_feature_incompat;
@ -326,20 +331,24 @@ errcode_t ext2fs_flush2(ext2_filsys fs, int flags)
#ifdef WORDS_BIGENDIAN
retval = EXT2_ET_NO_MEMORY;
retval = ext2fs_get_mem(SUPERBLOCK_SIZE, &super_shadow);
if (retval)
goto errout;
retval = ext2fs_get_array(fs->desc_blocks, fs->blocksize,
&group_shadow);
if (retval)
goto errout;
memcpy(super_shadow, fs->super, sizeof(struct ext2_super_block));
memcpy(group_shadow, fs->group_desc, (size_t) fs->blocksize *
fs->desc_blocks);
ext2fs_swap_super(super_shadow);
for (j = 0; j < fs->group_desc_count; j++) {
gdp = ext2fs_group_desc(fs, group_shadow, j);
ext2fs_swap_group_desc2(fs, gdp);
if (((fs->flags & EXT2_FLAG_SUPER_ONLY) == 0) &&
!ext2fs_has_feature_journal_dev(fs->super)) {
retval = ext2fs_get_array(fs->desc_blocks, fs->blocksize,
&group_shadow);
if (retval)
goto errout;
memcpy(group_shadow, fs->group_desc, (size_t) fs->blocksize *
fs->desc_blocks);
for (j = 0; j < fs->group_desc_count; j++) {
gdp = ext2fs_group_desc(fs, group_shadow, j);
ext2fs_swap_group_desc2(fs, gdp);
}
}
#else
super_shadow = fs->super;

76
src/ext2fs/csum.c
View File

@ -266,14 +266,15 @@ static errcode_t __get_dirent_tail(ext2_filsys fs,
d = dirent;
top = EXT2_DIRENT_TAIL(dirent, fs->blocksize);
rec_len = translate(d->rec_len);
while (rec_len && !(rec_len & 0x3)) {
d = (struct ext2_dir_entry *)(((char *)d) + rec_len);
if ((void *)d >= top)
break;
while ((void *) d < top) {
rec_len = translate(d->rec_len);
if ((rec_len < 8) || (rec_len & 0x03))
return EXT2_ET_DIR_CORRUPTED;
d = (struct ext2_dir_entry *)(((char *)d) + rec_len);
}
if ((char *)d > ((char *)dirent + fs->blocksize))
return EXT2_ET_DIR_CORRUPTED;
if (d != top)
return EXT2_ET_DIR_NO_SPACE_FOR_CSUM;
@ -290,7 +291,8 @@ static errcode_t __get_dirent_tail(ext2_filsys fs,
int ext2fs_dirent_has_tail(ext2_filsys fs, struct ext2_dir_entry *dirent)
{
return __get_dirent_tail(fs, dirent, NULL, 0) == 0;
return __get_dirent_tail(fs, dirent, NULL, 0) !=
EXT2_ET_DIR_NO_SPACE_FOR_CSUM;
}
static errcode_t ext2fs_dirent_csum(ext2_filsys fs, ext2_ino_t inum,
@ -358,20 +360,31 @@ static errcode_t ext2fs_dirent_csum_set(ext2_filsys fs, ext2_ino_t inum,
return 0;
}
static errcode_t ext2fs_dx_csum(ext2_filsys fs, ext2_ino_t inum,
struct ext2_dir_entry *dirent,
__u32 *crc, int count_offset, int count,
struct ext2_dx_tail *t)
errcode_t ext2fs_dx_csum(ext2_filsys fs, ext2_ino_t inum,
struct ext2_dir_entry *dirent,
__u32 *crc, struct ext2_dx_tail **ret_t)
{
errcode_t retval;
char *buf = (char *)dirent;
int size;
__u32 old_csum, gen;
__u32 gen, dummy_csum = 0;
struct ext2_inode inode;
struct ext2_dx_tail *t;
struct ext2_dx_countlimit *c;
int count_offset, limit, count;
retval = __get_dx_countlimit(fs, dirent, &c, &count_offset, 1);
if (retval)
return retval;
limit = ext2fs_le16_to_cpu(c->limit);
count = ext2fs_le16_to_cpu(c->count);
if (count_offset + (limit * sizeof(struct ext2_dx_entry)) >
fs->blocksize - sizeof(struct ext2_dx_tail))
return EXT2_ET_DIR_NO_SPACE_FOR_CSUM;
/* htree structs are accessed in LE order */
t = (struct ext2_dx_tail *)(((struct ext2_dx_entry *)c) + limit);
size = count_offset + (count * sizeof(struct ext2_dx_entry));
old_csum = t->dt_checksum;
t->dt_checksum = 0;
retval = ext2fs_read_inode(fs, inum, &inode);
if (retval)
@ -383,10 +396,11 @@ static errcode_t ext2fs_dx_csum(ext2_filsys fs, ext2_ino_t inum,
sizeof(inum));
*crc = ext2fs_crc32c_le(*crc, (unsigned char *)&gen, sizeof(gen));
*crc = ext2fs_crc32c_le(*crc, (unsigned char *)buf, size);
*crc = ext2fs_crc32c_le(*crc, (unsigned char *)t,
sizeof(struct ext2_dx_tail));
t->dt_checksum = old_csum;
*crc = ext2fs_crc32c_le(*crc, (unsigned char *)t, 4);
*crc = ext2fs_crc32c_le(*crc, (unsigned char *)&dummy_csum, 4);
if (ret_t)
*ret_t = t;
return 0;
}
@ -395,22 +409,9 @@ static int ext2fs_dx_csum_verify(ext2_filsys fs, ext2_ino_t inum,
{
__u32 calculated;
errcode_t retval;
struct ext2_dx_countlimit *c;
struct ext2_dx_tail *t;
int count_offset, limit, count;
retval = __get_dx_countlimit(fs, dirent, &c, &count_offset, 1);
if (retval)
return 1;
limit = ext2fs_le16_to_cpu(c->limit);
count = ext2fs_le16_to_cpu(c->count);
if (count_offset + (limit * sizeof(struct ext2_dx_entry)) >
fs->blocksize - sizeof(struct ext2_dx_tail))
return 0;
/* htree structs are accessed in LE order */
t = (struct ext2_dx_tail *)(((struct ext2_dx_entry *)c) + limit);
retval = ext2fs_dx_csum(fs, inum, dirent, &calculated, count_offset,
count, t);
retval = ext2fs_dx_csum(fs, inum, dirent, &calculated, &t);
if (retval)
return 0;
@ -422,22 +423,9 @@ static errcode_t ext2fs_dx_csum_set(ext2_filsys fs, ext2_ino_t inum,
{
__u32 crc;
errcode_t retval = 0;
struct ext2_dx_countlimit *c;
struct ext2_dx_tail *t;
int count_offset, limit, count;
retval = __get_dx_countlimit(fs, dirent, &c, &count_offset, 1);
if (retval)
return retval;
limit = ext2fs_le16_to_cpu(c->limit);
count = ext2fs_le16_to_cpu(c->count);
if (count_offset + (limit * sizeof(struct ext2_dx_entry)) >
fs->blocksize - sizeof(struct ext2_dx_tail))
return EXT2_ET_DIR_NO_SPACE_FOR_CSUM;
t = (struct ext2_dx_tail *)(((struct ext2_dx_entry *)c) + limit);
/* htree structs are accessed in LE order */
retval = ext2fs_dx_csum(fs, inum, dirent, &crc, count_offset, count, t);
retval = ext2fs_dx_csum(fs, inum, dirent, &crc, &t);
if (retval)
return retval;
t->dt_checksum = ext2fs_cpu_to_le32(crc);

307
src/ext2fs/dirhash.c Normal file
View File

@ -0,0 +1,307 @@
/*
* dirhash.c -- Calculate the hash of a directory entry
*
* Copyright (c) 2001 Daniel Phillips
*
* Copyright (c) 2002 Theodore Ts'o.
*
* %Begin-Header%
* This file may be redistributed under the terms of the GNU Library
* General Public License, version 2.
* %End-Header%
*/
#include "config.h"
#include <stdio.h>
#include <string.h>
#include <limits.h>
#include "ext2_fs.h"
#include "ext2fs.h"
#include "ext2fsP.h"
#ifndef PATH_MAX
#define PATH_MAX 4096
#endif
/*
* Keyed 32-bit hash function using TEA in a Davis-Meyer function
* H0 = Key
* Hi = E Mi(Hi-1) + Hi-1
*
* (see Applied Cryptography, 2nd edition, p448).
*
* Jeremy Fitzhardinge <jeremy@zip.com.au> 1998
*
* This code is made available under the terms of the GPL
*/
#define DELTA 0x9E3779B9
static void TEA_transform(__u32 buf[4], __u32 const in[])
{
__u32 sum = 0;
__u32 b0 = buf[0], b1 = buf[1];
__u32 a = in[0], b = in[1], c = in[2], d = in[3];
int n = 16;
do {
sum += DELTA;
b0 += ((b1 << 4)+a) ^ (b1+sum) ^ ((b1 >> 5)+b);
b1 += ((b0 << 4)+c) ^ (b0+sum) ^ ((b0 >> 5)+d);
} while(--n);
buf[0] += b0;
buf[1] += b1;
}
/* F, G and H are basic MD4 functions: selection, majority, parity */
#define F(x, y, z) ((z) ^ ((x) & ((y) ^ (z))))
#define G(x, y, z) (((x) & (y)) + (((x) ^ (y)) & (z)))
#define H(x, y, z) ((x) ^ (y) ^ (z))
/*
* The generic round function. The application is so specific that
* we don't bother protecting all the arguments with parens, as is generally
* good macro practice, in favor of extra legibility.
* Rotation is separate from addition to prevent recomputation
*/
#define ROUND(f, a, b, c, d, x, s) \
(a += f(b, c, d) + x, a = (a << s) | (a >> (32-s)))
#define K1 0
#define K2 013240474631UL
#define K3 015666365641UL
/*
* Basic cut-down MD4 transform. Returns only 32 bits of result.
*/
static void halfMD4Transform (__u32 buf[4], __u32 const in[])
{
__u32 a = buf[0], b = buf[1], c = buf[2], d = buf[3];
/* Round 1 */
ROUND(F, a, b, c, d, in[0] + K1, 3);
ROUND(F, d, a, b, c, in[1] + K1, 7);
ROUND(F, c, d, a, b, in[2] + K1, 11);
ROUND(F, b, c, d, a, in[3] + K1, 19);
ROUND(F, a, b, c, d, in[4] + K1, 3);
ROUND(F, d, a, b, c, in[5] + K1, 7);
ROUND(F, c, d, a, b, in[6] + K1, 11);
ROUND(F, b, c, d, a, in[7] + K1, 19);
/* Round 2 */
ROUND(G, a, b, c, d, in[1] + K2, 3);
ROUND(G, d, a, b, c, in[3] + K2, 5);
ROUND(G, c, d, a, b, in[5] + K2, 9);
ROUND(G, b, c, d, a, in[7] + K2, 13);
ROUND(G, a, b, c, d, in[0] + K2, 3);
ROUND(G, d, a, b, c, in[2] + K2, 5);
ROUND(G, c, d, a, b, in[4] + K2, 9);
ROUND(G, b, c, d, a, in[6] + K2, 13);
/* Round 3 */
ROUND(H, a, b, c, d, in[3] + K3, 3);
ROUND(H, d, a, b, c, in[7] + K3, 9);
ROUND(H, c, d, a, b, in[2] + K3, 11);
ROUND(H, b, c, d, a, in[6] + K3, 15);
ROUND(H, a, b, c, d, in[1] + K3, 3);
ROUND(H, d, a, b, c, in[5] + K3, 9);
ROUND(H, c, d, a, b, in[0] + K3, 11);
ROUND(H, b, c, d, a, in[4] + K3, 15);
buf[0] += a;
buf[1] += b;
buf[2] += c;
buf[3] += d;
}
#undef ROUND
#undef F
#undef G
#undef H
#undef K1
#undef K2
#undef K3
/* The old legacy hash */
static ext2_dirhash_t dx_hack_hash (const char *name, int len,
int unsigned_flag)
{
__u32 hash, hash0 = 0x12a3fe2d, hash1 = 0x37abe8f9;
const unsigned char *ucp = (const unsigned char *) name;
const signed char *scp = (const signed char *) name;
int c;
while (len--) {
if (unsigned_flag)
c = (int) *ucp++;
else
c = (int) *scp++;
hash = hash1 + (hash0 ^ (c * 7152373));
if (hash & 0x80000000) hash -= 0x7fffffff;
hash1 = hash0;
hash0 = hash;
}
return (hash0 << 1);
}
static void str2hashbuf(const char *msg, int len, __u32 *buf, int num,
int unsigned_flag)
{
__u32 pad, val;
int i, c;
const unsigned char *ucp = (const unsigned char *) msg;
const signed char *scp = (const signed char *) msg;
pad = (__u32)len | ((__u32)len << 8);
pad |= pad << 16;
val = pad;
if (len > num*4)
len = num * 4;
for (i=0; i < len; i++) {
if (unsigned_flag)
c = (int) ucp[i];
else
c = (int) scp[i];
val = c + (val << 8);
if ((i % 4) == 3) {
*buf++ = val;
val = pad;
num--;
}
}
if (--num >= 0)
*buf++ = val;
while (--num >= 0)
*buf++ = pad;
}
/*
* Returns the hash of a filename. If len is 0 and name is NULL, then
* this function can be used to test whether or not a hash version is
* supported.
*
* The seed is an 4 longword (32 bits) "secret" which can be used to
* uniquify a hash. If the seed is all zero's, then some default seed
* may be used.
*
* A particular hash version specifies whether or not the seed is
* represented, and whether or not the returned hash is 32 bits or 64
* bits. 32 bit hashes will return 0 for the minor hash.
*
* This function doesn't do any normalization or casefolding of the
* input string. To take charset encoding into account, use
* ext2fs_dirhash2.
*
*/
errcode_t ext2fs_dirhash(int version, const char *name, int len,
const __u32 *seed,
ext2_dirhash_t *ret_hash,
ext2_dirhash_t *ret_minor_hash)
{
__u32 hash;
__u32 minor_hash = 0;
const char *p;
int i;
__u32 in[8], buf[4];
int unsigned_flag = 0;
/* Initialize the default seed for the hash checksum functions */
buf[0] = 0x67452301;
buf[1] = 0xefcdab89;
buf[2] = 0x98badcfe;
buf[3] = 0x10325476;
/* Check to see if the seed is all zero's */
if (seed) {
for (i=0; i < 4; i++) {
if (seed[i])
break;
}
if (i < 4)
memcpy(buf, seed, sizeof(buf));
}
switch (version) {
case EXT2_HASH_LEGACY_UNSIGNED:
unsigned_flag++;
/* fallthrough */
case EXT2_HASH_LEGACY:
hash = dx_hack_hash(name, len, unsigned_flag);
break;
case EXT2_HASH_HALF_MD4_UNSIGNED:
unsigned_flag++;
/* fallthrough */
case EXT2_HASH_HALF_MD4:
p = name;
while (len > 0) {
str2hashbuf(p, len, in, 8, unsigned_flag);
halfMD4Transform(buf, in);
len -= 32;
p += 32;
}
minor_hash = buf[2];
hash = buf[1];
break;
case EXT2_HASH_TEA_UNSIGNED:
unsigned_flag++;
/* fallthrough */
case EXT2_HASH_TEA:
p = name;
while (len > 0) {
str2hashbuf(p, len, in, 4, unsigned_flag);
TEA_transform(buf, in);
len -= 16;
p += 16;
}
hash = buf[0];
minor_hash = buf[1];
break;
default:
*ret_hash = 0;
return EXT2_ET_DIRHASH_UNSUPP;
}
*ret_hash = hash & ~1;
if (ret_minor_hash)
*ret_minor_hash = minor_hash;
return 0;
}
/*
* Returns the hash of a filename considering normalization and
* casefolding. This is a wrapper around ext2fs_dirhash with string
* encoding support based on the nls_table and the flags. Check
* ext2fs_dirhash for documentation on the input and output parameters.
*/
errcode_t ext2fs_dirhash2(int version, const char *name, int len,
const struct ext2fs_nls_table *charset,
int hash_flags, const __u32 *seed,
ext2_dirhash_t *ret_hash,
ext2_dirhash_t *ret_minor_hash)
{
errcode_t r;
int dlen;
if (len && charset && (hash_flags & EXT4_CASEFOLD_FL)) {
char buff[PATH_MAX];
dlen = charset->ops->casefold(charset,
(const unsigned char *) name, len,
(unsigned char *) buff, sizeof(buff));
if (dlen < 0) {
if (dlen == -EINVAL)
goto opaque_seq;
return dlen;
}
r = ext2fs_dirhash(version, buff, dlen, seed, ret_hash,
ret_minor_hash);
return r;
}
opaque_seq:
return ext2fs_dirhash(version, name, len, seed, ret_hash,
ret_minor_hash);
}

1
src/ext2fs/ext2_err.h
View File

@ -184,6 +184,7 @@
#define EXT2_ET_CORRUPT_JOURNAL_SB (2133571504L)
#define EXT2_ET_INODE_CORRUPTED (2133571505L)
#define EXT2_ET_EA_INODE_CORRUPTED (2133571506L)
#define EXT2_ET_NO_GDESC (2133571507L)
extern const struct error_table et_ext2_error_table;
extern void initialize_ext2_error_table(void);

36
src/ext2fs/ext2_fs.h
View File

@ -351,6 +351,7 @@ struct ext2_dx_tail {
/* EXT4_EOFBLOCKS_FL 0x00400000 was here */
#define FS_NOCOW_FL 0x00800000 /* Do not cow file */
#define EXT4_SNAPFILE_FL 0x01000000 /* Inode is a snapshot */
#define FS_DAX_FL 0x02000000 /* Inode is DAX */
#define EXT4_SNAPFILE_DELETED_FL 0x04000000 /* Snapshot is being deleted */
#define EXT4_SNAPFILE_SHRUNK_FL 0x08000000 /* Snapshot shrink has completed */
#define EXT4_INLINE_DATA_FL 0x10000000 /* Inode has inline data */
@ -698,8 +699,8 @@ struct ext2_super_block {
/*060*/ __u32 s_feature_incompat; /* incompatible feature set */
__u32 s_feature_ro_compat; /* readonly-compatible feature set */
/*068*/ __u8 s_uuid[16]; /* 128-bit uuid for volume */
/*078*/ char s_volume_name[EXT2_LABEL_LEN]; /* volume name */
/*088*/ char s_last_mounted[64]; /* directory where last mounted */
/*078*/ __u8 s_volume_name[EXT2_LABEL_LEN]; /* volume name, no NUL? */
/*088*/ __u8 s_last_mounted[64]; /* directory last mounted on, no NUL? */
/*0c8*/ __u32 s_algorithm_usage_bitmap; /* For compression */
/*
* Performance hints. Directory preallocation should only
@ -747,18 +748,18 @@ struct ext2_super_block {
__u32 s_first_error_time; /* first time an error happened */
__u32 s_first_error_ino; /* inode involved in first error */
/*1a0*/ __u64 s_first_error_block; /* block involved in first error */
__u8 s_first_error_func[32]; /* function where the error happened */
__u8 s_first_error_func[32]; /* function where error hit, no NUL? */
/*1c8*/ __u32 s_first_error_line; /* line number where error happened */
__u32 s_last_error_time; /* most recent time of an error */
/*1d0*/ __u32 s_last_error_ino; /* inode involved in last error */
__u32 s_last_error_line; /* line number where error happened */
__u64 s_last_error_block; /* block involved of last error */
/*1e0*/ __u8 s_last_error_func[32]; /* function where the error happened */
/*1e0*/ __u8 s_last_error_func[32]; /* function where error hit, no NUL? */
#define EXT4_S_ERR_END ext4_offsetof(struct ext2_super_block, s_mount_opts)
/*200*/ __u8 s_mount_opts[64];
/*200*/ __u8 s_mount_opts[64]; /* default mount options, no NUL? */
/*240*/ __u32 s_usr_quota_inum; /* inode number of user quota file */
__u32 s_grp_quota_inum; /* inode number of group quota file */
__u32 s_overhead_blocks; /* overhead blocks/clusters in fs */
__u32 s_overhead_clusters; /* overhead blocks/clusters in fs */
/*24c*/ __u32 s_backup_bgs[2]; /* If sparse_super2 enabled */
/*254*/ __u8 s_encrypt_algos[4]; /* Encryption algorithms in use */
/*258*/ __u8 s_encrypt_pw_salt[16]; /* Salt used for string2key algorithm */
@ -771,7 +772,8 @@ struct ext2_super_block {
__u8 s_lastcheck_hi;
__u8 s_first_error_time_hi;
__u8 s_last_error_time_hi;
__u8 s_pad[2];
__u8 s_first_error_errcode;
__u8 s_last_error_errcode;
/*27c*/ __le16 s_encoding; /* Filename charset encoding */
__le16 s_encoding_flags; /* Filename charset encoding flags */
__le32 s_reserved[95]; /* Padding to the end of the block */
@ -779,6 +781,7 @@ struct ext2_super_block {
};
#define EXT4_S_ERR_LEN (EXT4_S_ERR_END - EXT4_S_ERR_START)
#define EXT2_LEN_STR(buf) (int)sizeof(buf), (char *)buf
/*
* Codes for operating systems
@ -828,6 +831,8 @@ struct ext2_super_block {
/* #define EXT2_FEATURE_COMPAT_EXCLUDE_INODE 0x0080 not used, legacy */
#define EXT2_FEATURE_COMPAT_EXCLUDE_BITMAP 0x0100
#define EXT4_FEATURE_COMPAT_SPARSE_SUPER2 0x0200
#define EXT4_FEATURE_COMPAT_FAST_COMMIT 0x0400
#define EXT4_FEATURE_COMPAT_STABLE_INODES 0x0800
#define EXT2_FEATURE_RO_COMPAT_SPARSE_SUPER 0x0001
@ -867,7 +872,7 @@ struct ext2_super_block {
#define EXT4_FEATURE_INCOMPAT_LARGEDIR 0x4000 /* >2GB or 3-lvl htree */
#define EXT4_FEATURE_INCOMPAT_INLINE_DATA 0x8000 /* data in inode */
#define EXT4_FEATURE_INCOMPAT_ENCRYPT 0x10000
#define EXT4_FEATURE_INCOMPAT_FNAME_ENCODING 0x20000
#define EXT4_FEATURE_INCOMPAT_CASEFOLD 0x20000
#define EXT4_FEATURE_COMPAT_FUNCS(name, ver, flagname) \
static inline int ext2fs_has_feature_##name(struct ext2_super_block *sb) \
@ -929,6 +934,8 @@ EXT4_FEATURE_COMPAT_FUNCS(dir_index, 2, DIR_INDEX)
EXT4_FEATURE_COMPAT_FUNCS(lazy_bg, 2, LAZY_BG)
EXT4_FEATURE_COMPAT_FUNCS(exclude_bitmap, 2, EXCLUDE_BITMAP)
EXT4_FEATURE_COMPAT_FUNCS(sparse_super2, 4, SPARSE_SUPER2)
EXT4_FEATURE_COMPAT_FUNCS(fast_commit, 4, FAST_COMMIT)
EXT4_FEATURE_COMPAT_FUNCS(stable_inodes, 4, STABLE_INODES)
EXT4_FEATURE_RO_COMPAT_FUNCS(sparse_super, 2, SPARSE_SUPER)
EXT4_FEATURE_RO_COMPAT_FUNCS(large_file, 2, LARGE_FILE)
@ -961,7 +968,7 @@ EXT4_FEATURE_INCOMPAT_FUNCS(csum_seed, 4, CSUM_SEED)
EXT4_FEATURE_INCOMPAT_FUNCS(largedir, 4, LARGEDIR)
EXT4_FEATURE_INCOMPAT_FUNCS(inline_data, 4, INLINE_DATA)
EXT4_FEATURE_INCOMPAT_FUNCS(encrypt, 4, ENCRYPT)
EXT4_FEATURE_INCOMPAT_FUNCS(fname_encoding, 4, FNAME_ENCODING)
EXT4_FEATURE_INCOMPAT_FUNCS(casefold, 4, CASEFOLD)
#define EXT2_FEATURE_COMPAT_SUPP 0
#define EXT2_FEATURE_INCOMPAT_SUPP (EXT2_FEATURE_INCOMPAT_FILETYPE| \
@ -1112,9 +1119,9 @@ struct ext2_dir_entry_tail {
struct mmp_struct {
__u32 mmp_magic; /* Magic number for MMP */
__u32 mmp_seq; /* Sequence no. updated periodically */
__u64 mmp_time; /* Time last updated */
char mmp_nodename[64]; /* Node which last updated MMP block */
char mmp_bdevname[32]; /* Bdev which last updated MMP block */
__u64 mmp_time; /* Time last updated (seconds) */
__u8 mmp_nodename[64]; /* Node updating MMP block, no NUL? */
__u8 mmp_bdevname[32]; /* Bdev updating MMP block, no NUL? */
__u16 mmp_check_interval; /* Changed mmp_check_interval */
__u16 mmp_pad1;
__u32 mmp_pad2[226];
@ -1146,11 +1153,8 @@ struct mmp_struct {
*/
#define EXT4_INLINE_DATA_DOTDOT_SIZE (4)
#define EXT4_ENC_ASCII 0
#define EXT4_ENC_UTF8_11_0 1
#define EXT4_ENC_UTF8_12_1 1
#define EXT4_ENC_STRICT_MODE_FL (1 << 0) /* Reject invalid sequences */
#define EXT4_UTF8_NORMALIZATION_TYPE_NFKD (1 << 1)
#define EXT4_UTF8_CASEFOLD_TYPE_NFKDCF (1 << 4)
#endif /* _LINUX_EXT2_FS_H */

67
src/ext2fs/ext2fs.h
View File

@ -198,6 +198,8 @@ typedef struct ext2_file *ext2_file_t;
#define EXT2_FLAG_IGNORE_CSUM_ERRORS 0x200000
#define EXT2_FLAG_SHARE_DUP 0x400000
#define EXT2_FLAG_IGNORE_SB_ERRORS 0x800000
#define EXT2_FLAG_BBITMAP_TAIL_PROBLEM 0x1000000
#define EXT2_FLAG_IBITMAP_TAIL_PROBLEM 0x2000000
/*
* Special flag in the ext2 inode i_flag field that means that this is
@ -302,7 +304,7 @@ struct struct_ext2_filsys {
/* hashmap for SHA of data blocks */
struct ext2fs_hashmap* block_sha_map;
const struct nls_table *encoding;
const struct ext2fs_nls_table *encoding;
};
#if EXT2_FLAT_INCLUDES
@ -603,7 +605,9 @@ typedef struct ext2_icount *ext2_icount_t;
EXT2_FEATURE_COMPAT_RESIZE_INODE|\
EXT2_FEATURE_COMPAT_DIR_INDEX|\
EXT2_FEATURE_COMPAT_EXT_ATTR|\
EXT4_FEATURE_COMPAT_SPARSE_SUPER2)
EXT4_FEATURE_COMPAT_SPARSE_SUPER2|\
EXT4_FEATURE_COMPAT_FAST_COMMIT|\
EXT4_FEATURE_COMPAT_STABLE_INODES)
#ifdef CONFIG_MMP
#define EXT4_LIB_INCOMPAT_MMP EXT4_FEATURE_INCOMPAT_MMP
@ -622,7 +626,7 @@ typedef struct ext2_icount *ext2_icount_t;
EXT4_FEATURE_INCOMPAT_64BIT|\
EXT4_FEATURE_INCOMPAT_INLINE_DATA|\
EXT4_FEATURE_INCOMPAT_ENCRYPT|\
EXT4_FEATURE_INCOMPAT_FNAME_ENCODING|\
EXT4_FEATURE_INCOMPAT_CASEFOLD|\
EXT4_FEATURE_INCOMPAT_CSUM_SEED|\
EXT4_FEATURE_INCOMPAT_LARGEDIR)
@ -900,7 +904,9 @@ extern int ext2fs_group_blocks_count(ext2_filsys fs, dgrp_t group);
extern blk64_t ext2fs_inode_data_blocks2(ext2_filsys fs,
struct ext2_inode *inode);
extern blk64_t ext2fs_inode_i_blocks(ext2_filsys fs,
struct ext2_inode *inode);
struct ext2_inode *inode);
extern blk64_t ext2fs_get_stat_i_blocks(ext2_filsys fs,
struct ext2_inode *inode);
extern blk64_t ext2fs_blocks_count(struct ext2_super_block *super);
extern void ext2fs_blocks_count_set(struct ext2_super_block *super,
blk64_t blk);
@ -1072,6 +1078,9 @@ extern errcode_t ext2fs_get_dx_countlimit(ext2_filsys fs,
struct ext2_dir_entry *dirent,
struct ext2_dx_countlimit **cc,
int *offset);
extern errcode_t ext2fs_dx_csum(ext2_filsys fs, ext2_ino_t inum,
struct ext2_dir_entry *dirent,
__u32 *crc, struct ext2_dx_tail **ret_t);
extern errcode_t ext2fs_extent_block_csum_set(ext2_filsys fs,
ext2_ino_t inum,
struct ext3_extent_header *eh);
@ -1181,7 +1190,7 @@ extern errcode_t ext2fs_dirhash(int version, const char *name, int len,
ext2_dirhash_t *ret_minor_hash);
extern errcode_t ext2fs_dirhash2(int version, const char *name, int len,
const struct nls_table *charset,
const struct ext2fs_nls_table *charset,
int hash_flags,
const __u32 *seed,
ext2_dirhash_t *ret_hash,
@ -1429,6 +1438,8 @@ errcode_t ext2fs_set_generic_bmap_range(ext2fs_generic_bitmap bmap,
void *in);
errcode_t ext2fs_convert_subcluster_bitmap(ext2_filsys fs,
ext2fs_block_bitmap *bitmap);
errcode_t ext2fs_count_used_clusters(ext2_filsys fs, blk64_t start,
blk64_t end, blk64_t *out);
/* get_num_dirs.c */
extern errcode_t ext2fs_get_num_dirs(ext2_filsys fs, ext2_ino_t *ret_num_dirs);
@ -1594,6 +1605,9 @@ extern errcode_t ext2fs_new_dir_block(ext2_filsys fs, ext2_ino_t dir_ino,
extern errcode_t ext2fs_new_dir_inline_data(ext2_filsys fs, ext2_ino_t dir_ino,
ext2_ino_t parent_ino, __u32 *iblock);
/* nls_utf8.c */
extern const struct ext2fs_nls_table *ext2fs_load_nls_table(int encoding);
/* mkdir.c */
extern errcode_t ext2fs_mkdir(ext2_filsys fs, ext2_ino_t parent, ext2_ino_t inum,
const char *name);
@ -1751,6 +1765,8 @@ extern errcode_t ext2fs_get_arrayzero(unsigned long count,
extern errcode_t ext2fs_free_mem(void *ptr);
extern errcode_t ext2fs_resize_mem(unsigned long old_size,
unsigned long size, void *ptr);
extern errcode_t ext2fs_resize_array(unsigned long old_count, unsigned long count,
unsigned long size, void *ptr);
extern void ext2fs_mark_super_dirty(ext2_filsys fs);
extern void ext2fs_mark_changed(ext2_filsys fs);
extern int ext2fs_test_changed(ext2_filsys fs);
@ -1834,7 +1850,8 @@ _INLINE_ errcode_t ext2fs_get_memzero(unsigned long size, void *ptr)
return 0;
}
_INLINE_ errcode_t ext2fs_get_array(unsigned long count, unsigned long size, void *ptr)
_INLINE_ errcode_t ext2fs_get_array(unsigned long count, unsigned long size,
void *ptr)
{
if (count && (~0UL)/count < size)
return EXT2_ET_NO_MEMORY;
@ -1889,6 +1906,36 @@ _INLINE_ errcode_t ext2fs_resize_mem(unsigned long EXT2FS_ATTR((unused)) old_siz
memcpy(ptr, &p, sizeof(p));
return 0;
}
/*
* Resize array. The 'ptr' arg must point to a pointer.
*/
_INLINE_ errcode_t ext2fs_resize_array(unsigned long size,
unsigned long old_count,
unsigned long count, void *ptr)
{
unsigned long old_size;
errcode_t retval;
if (count && (~0UL)/count < size)
return EXT2_ET_NO_MEMORY;
size *= count;
old_size = size * old_count;
retval = ext2fs_resize_mem(old_size, size, ptr);
if (retval)
return retval;
if (size > old_size) {
void *p;
memcpy(&p, ptr, sizeof(p));
memset((char *)p + old_size, 0, size - old_size);
memcpy(ptr, &p, sizeof(p));
}
return 0;
}
#endif /* Custom memory routines */
/*
@ -2010,7 +2057,13 @@ _INLINE_ blk_t ext2fs_inode_data_blocks(ext2_filsys fs,
_INLINE_ int ext2fs_htree_intnode_maxrecs(ext2_filsys fs, int blocks)
{
return blocks * ((fs->blocksize - 8) / sizeof(struct ext2_dx_entry));
int csum_size = 0;
if ((EXT2_SB(fs->super)->s_feature_ro_compat &
EXT4_FEATURE_RO_COMPAT_METADATA_CSUM) != 0)
csum_size = sizeof(struct ext2_dx_tail);
return blocks * ((fs->blocksize - (8 + csum_size)) /
sizeof(struct ext2_dx_entry));
}
/*

14
src/ext2fs/ext2fsP.h
View File

@ -92,6 +92,20 @@ struct ext2_inode_cache_ent {
struct ext2_inode *inode;
};
/*
* NLS defintions
*/
struct ext2fs_nls_table {
int version;
const struct ext2fs_nls_ops *ops;
};
struct ext2fs_nls_ops {
int (*casefold)(const struct ext2fs_nls_table *charset,
const unsigned char *str, size_t len,
unsigned char *dest, size_t dlen);
};
/* Function prototypes */
extern int ext2fs_process_dir_block(ext2_filsys fs,

5
src/ext2fs/ext_attr.c
View File

@ -1550,14 +1550,15 @@ errcode_t ext2fs_xattr_set(struct ext2_xattr_handle *h,
new_value, &value_len);
if (ret)
goto out;
} else
} else if (value_len)
memcpy(new_value, value, value_len);
/* Imitate kernel behavior by skipping update if value is the same. */
for (x = h->attrs; x < h->attrs + h->count; x++) {
if (!strcmp(x->name, name)) {
if (!x->ea_ino && x->value_len == value_len &&
!memcmp(x->value, new_value, value_len)) {
(!value_len ||
!memcmp(x->value, new_value, value_len))) {
ret = 0;
goto out;
}

28
src/ext2fs/fallocate.c
View File

@ -808,7 +808,8 @@ errcode_t ext2fs_fallocate(ext2_filsys fs, int flags, ext2_ino_t ino,
blk64_t start, blk64_t len)
{
struct ext2_inode inode_buf;
blk64_t blk, x;
blk64_t blk, x, zero_blk = 0, last = 0;
int zero_len = 0;
errcode_t err = 0;
if (((flags & EXT2_FALLOCATE_FORCE_INIT) &&
@ -848,15 +849,32 @@ errcode_t ext2fs_fallocate(ext2_filsys fs, int flags, ext2_ino_t ino,
if (x)
continue;
err = ext2fs_bmap2(fs, ino, inode, NULL,
BMAP_ALLOC | BMAP_UNINIT | BMAP_ZERO, blk,
0, &x);
err = ext2fs_bmap2(fs, ino, inode, NULL, BMAP_ALLOC,
blk, 0, &x);
if (err)
return err;
goto errout;
if ((zero_len && (x != last+1)) ||
(zero_len >= 65536)) {
err = ext2fs_zero_blocks2(fs, zero_blk, zero_len,
NULL, NULL);
zero_len = 0;
if (err)
goto errout;
}
if (zero_len == 0) {
zero_blk = x;
zero_len = 1;
} else {
zero_len++;
}
last = x;
}
out:
if (inode == &inode_buf)
ext2fs_write_inode(fs, ino, inode);
errout:
if (zero_len)
ext2fs_zero_blocks2(fs, zero_blk, zero_len, NULL, NULL);
return err;
}

54
src/ext2fs/gen_bitmap64.c
View File

@ -799,7 +799,7 @@ errcode_t ext2fs_convert_subcluster_bitmap(ext2_filsys fs,
ext2fs_generic_bitmap_64 bmap, cmap;
ext2fs_block_bitmap gen_bmap = *bitmap, gen_cmap;
errcode_t retval;
blk64_t i, b_end, c_end, n, ratio;
blk64_t i, next, b_end, c_end;
bmap = (ext2fs_generic_bitmap_64) gen_bmap;
if (fs->cluster_ratio_bits == ext2fs_get_bitmap_granularity(gen_bmap))
@ -816,18 +816,13 @@ errcode_t ext2fs_convert_subcluster_bitmap(ext2_filsys fs,
bmap->end = bmap->real_end;
c_end = cmap->end;
cmap->end = cmap->real_end;
n = 0;
ratio = 1ULL << fs->cluster_ratio_bits;
while (i < bmap->real_end) {
if (ext2fs_test_block_bitmap2(gen_bmap, i)) {
ext2fs_mark_block_bitmap2(gen_cmap, i);
i += ratio - n;
n = 0;
continue;
}
i++; n++;
if (n >= ratio)
n = 0;
retval = ext2fs_find_first_set_block_bitmap2(gen_bmap,
i, bmap->real_end, &next);
if (retval)
break;
ext2fs_mark_block_bitmap2(gen_cmap, next);
i = EXT2FS_C2B(fs, EXT2FS_B2C(fs, next) + 1);
}
bmap->end = b_end;
cmap->end = c_end;
@ -945,3 +940,38 @@ errcode_t ext2fs_find_first_set_generic_bmap(ext2fs_generic_bitmap bitmap,
return ENOENT;
}
errcode_t ext2fs_count_used_clusters(ext2_filsys fs, blk64_t start,
blk64_t end, blk64_t *out)
{
blk64_t next;
blk64_t tot_set = 0;
errcode_t retval;
while (start < end) {
retval = ext2fs_find_first_set_block_bitmap2(fs->block_map,
start, end, &next);
if (retval) {
if (retval == ENOENT)
retval = 0;
break;
}
start = next;
retval = ext2fs_find_first_zero_block_bitmap2(fs->block_map,
start, end, &next);
if (retval == 0) {
tot_set += next - start;
start = next + 1;
} else if (retval == ENOENT) {
retval = 0;
tot_set += end - start + 1;
break;
} else
break;
}
if (!retval)
*out = EXT2FS_NUM_B2C(fs, tot_set);
return retval;
}

16
src/ext2fs/hashmap.c
View File

@ -1,6 +1,22 @@
#include "hashmap.h"
#include <string.h>
struct ext2fs_hashmap {
uint32_t size;
uint32_t(*hash)(const void *key, size_t len);
void(*free)(void*);
struct ext2fs_hashmap_entry *first;
struct ext2fs_hashmap_entry *last;
#if __GNUC_PREREQ (4, 8)
#pragma GCC diagnostic push
#pragma GCC diagnostic ignored "-Wpedantic"
#endif
struct ext2fs_hashmap_entry *entries[0];
#if __GNUC_PREREQ (4, 8)
#pragma GCC diagnostic pop
#endif
};
uint32_t ext2fs_djb2_hash(const void *str, size_t size)
{
int c;

30
src/ext2fs/hashmap.h
View File

@ -13,27 +13,15 @@
#endif
#endif
struct ext2fs_hashmap {
uint32_t size;
uint32_t(*hash)(const void *key, size_t len);
void(*free)(void*);
struct ext2fs_hashmap_entry *first;
struct ext2fs_hashmap_entry *last;
struct ext2fs_hashmap_entry {
void *data;
const void *key;
size_t key_len;
struct ext2fs_hashmap_entry *next;
struct ext2fs_hashmap_entry *list_next;
struct ext2fs_hashmap_entry *list_prev;
#if __GNUC_PREREQ (4, 8)
#pragma GCC diagnostic push
#pragma GCC diagnostic ignored "-Wpedantic"
#endif
} *entries[0];
#if __GNUC_PREREQ (4, 8)
#pragma GCC diagnostic pop
#endif
struct ext2fs_hashmap;
struct ext2fs_hashmap_entry {
void *data;
const void *key;
size_t key_len;
struct ext2fs_hashmap_entry *next;
struct ext2fs_hashmap_entry *list_next;
struct ext2fs_hashmap_entry *list_prev;
};
struct ext2fs_hashmap *ext2fs_hashmap_create(

3
src/ext2fs/initialize.c
View File

@ -190,6 +190,9 @@ errcode_t ext2fs_initialize(const char *name, int flags,
assign_field(s_encoding);
assign_field(s_encoding_flags);
// if (ext2fs_has_feature_casefold(param))
// fs->encoding = ext2fs_load_nls_table(param->s_encoding);
if (super->s_feature_incompat & ~EXT2_LIB_FEATURE_INCOMPAT_SUPP) {
retval = EXT2_ET_UNSUPP_FEATURE;
goto cleanup;

11
src/ext2fs/inode.c
View File

@ -309,6 +309,7 @@ errcode_t ext2fs_inode_scan_goto_blockgroup(ext2_inode_scan scan,
{
scan->current_group = group - 1;
scan->groups_left = scan->fs->group_desc_count - group;
scan->bad_block_ptr = 0;
return get_next_blockgroup(scan);
}
@ -332,6 +333,12 @@ static errcode_t check_for_inode_bad_blocks(ext2_inode_scan scan,
if (blk == 0)
return 0;
/* Make sure bad_block_ptr is still valid */
if (scan->bad_block_ptr >= bb->num) {
scan->scan_flags &= ~EXT2_SF_CHK_BADBLOCKS;
return 0;
}
/*
* If the current block is greater than the bad block listed
* in the bad block list, then advance the pointer until this
@ -967,10 +974,6 @@ errcode_t ext2fs_write_inode2(ext2_filsys fs, ext2_ino_t ino,
if ((offset + length) > fs->blocksize)
clen = fs->blocksize - offset;
if (!fs->icache) {
retval = EXT2_ET_GDESC_READ;
goto errout;
}
if (fs->icache->buffer_blk != block_nr) {
retval = io_channel_read_blk64(fs->io, block_nr, 1,
fs->icache->buffer);

16
src/ext2fs/jfs_compat.h
View File

@ -22,8 +22,8 @@
#define KERN_ERR ""
#define KERN_DEBUG ""
#define READ 0
#define WRITE 1
#define REQ_OP_READ 0
#define REQ_OP_WRITE 1
#define cpu_to_be32(n) htonl(n)
#define be32_to_cpu(n) ntohl(n)
@ -37,14 +37,14 @@ typedef struct kdev_s *kdev_t;
struct buffer_head;
struct inode;
typedef unsigned int gfp_t;
#define GFP_KERNEL 0
#define JFS_TAG_SIZE32 JBD_TAG_SIZE32
#define JFS_BARRIER 0
#define GFP_NOFS 0
#define __GFP_NOFAIL 0
#define JBD2_TAG_SIZE32 JBD_TAG_SIZE32
#define JBD2_BARRIER 0
typedef __u64 u64;
#define JFS_CRC32_CHKSUM JBD2_CRC32_CHKSUM
#define JFS_CRC32_CHKSUM_SIZE JBD2_CRC32_CHKSUM_SIZE
#define put_bh(x) brelse(x)
#define be64_to_cpu(x) ext2fs_be64_to_cpu(x)
static inline __u32 jbd2_chksum(journal_t *j EXT2FS_ATTR((unused)),
__u32 crc, const void *address,
@ -56,7 +56,6 @@ static inline __u32 jbd2_chksum(journal_t *j EXT2FS_ATTR((unused)),
#define spin_lock_init(x)
#define spin_lock(x)
#define spin_unlock(x)
#define yield()
#define SLAB_HWCACHE_ALIGN 0
#define SLAB_TEMPORARY 0
#define KMEM_CACHE(__struct, __flags) kmem_cache_create(#__struct,\
@ -65,6 +64,7 @@ static inline __u32 jbd2_chksum(journal_t *j EXT2FS_ATTR((unused)),
#define blkdev_issue_flush(kdev, a, b) sync_blockdev(kdev)
#define is_power_of_2(x) ((x) != 0 && (((x) & ((x) - 1)) == 0))
#define pr_emerg(fmt)
struct journal_s
{

245
src/ext2fs/kernel-jbd.h
View File

@ -24,7 +24,7 @@
#define __FUNCTION__ ""
#endif
#define journal_oom_retry 1
#define journal_oom_retry 0
#ifdef __STDC__
#ifdef CONFIG_JBD_DEBUG
@ -73,13 +73,13 @@ extern void * __jbd_kmalloc (char *where, size_t size, int flags, int retry);
#define jbd_rep_kmalloc(size, flags) \
__jbd_kmalloc(__FUNCTION__, (size), (flags), 1)
#define JFS_MIN_JOURNAL_BLOCKS 1024
#define JBD2_MIN_JOURNAL_BLOCKS 1024
/*
* Internal structures used by the logging mechanism:
*/
#define JFS_MAGIC_NUMBER 0xc03b3998U /* The first 4 bytes of /dev/random! */
#define JBD2_MAGIC_NUMBER 0xc03b3998U /* The first 4 bytes of /dev/random! */
/*
* On-disk structures
@ -89,20 +89,20 @@ extern void * __jbd_kmalloc (char *where, size_t size, int flags, int retry);
* Descriptor block types:
*/
#define JFS_DESCRIPTOR_BLOCK 1
#define JFS_COMMIT_BLOCK 2
#define JFS_SUPERBLOCK_V1 3
#define JFS_SUPERBLOCK_V2 4
#define JFS_REVOKE_BLOCK 5
#define JBD2_DESCRIPTOR_BLOCK 1
#define JBD2_COMMIT_BLOCK 2
#define JBD2_SUPERBLOCK_V1 3
#define JBD2_SUPERBLOCK_V2 4
#define JBD2_REVOKE_BLOCK 5
/*
* Standard header for all descriptor blocks:
*/
typedef struct journal_header_s
{
__u32 h_magic;
__u32 h_blocktype;
__u32 h_sequence;
__be32 h_magic;
__be32 h_blocktype;
__be32 h_sequence;
} journal_header_t;
/*
@ -135,15 +135,15 @@ typedef struct journal_header_s
* Checksum v1, v2, and v3 are mutually exclusive features.
*/
struct commit_header {
__u32 h_magic;
__u32 h_blocktype;
__u32 h_sequence;
__be32 h_magic;
__be32 h_blocktype;
__be32 h_sequence;
unsigned char h_chksum_type;
unsigned char h_chksum_size;
unsigned char h_padding[2];
__u32 h_chksum[JBD2_CHECKSUM_BYTES];
__u64 h_commit_sec;
__u32 h_commit_nsec;
__be32 h_chksum[JBD2_CHECKSUM_BYTES];
__be64 h_commit_sec;
__be32 h_commit_nsec;
};
/*
@ -151,22 +151,22 @@ struct commit_header {
*/
typedef struct journal_block_tag3_s
{
__u32 t_blocknr; /* The on-disk block number */
__u32 t_flags; /* See below */
__u32 t_blocknr_high; /* most-significant high 32bits. */
__u32 t_checksum; /* crc32c(uuid+seq+block) */
__be32 t_blocknr; /* The on-disk block number */
__be32 t_flags; /* See below */
__be32 t_blocknr_high; /* most-significant high 32bits. */
__be32 t_checksum; /* crc32c(uuid+seq+block) */
} journal_block_tag3_t;
typedef struct journal_block_tag_s
{
__u32 t_blocknr; /* The on-disk block number */
__u16 t_checksum; /* truncated crc32c(uuid+seq+block) */
__u16 t_flags; /* See below */
__u32 t_blocknr_high; /* most-significant high 32bits. */
__be32 t_blocknr; /* The on-disk block number */
__be16 t_checksum; /* truncated crc32c(uuid+seq+block) */
__be16 t_flags; /* See below */
__be32 t_blocknr_high; /* most-significant high 32bits. */
} journal_block_tag_t;
/* Tail of descriptor block, for checksumming */
struct journal_block_tail {
/* Tail of descriptor or revoke block, for checksumming */
struct jbd2_journal_block_tail {
__be32 t_checksum;
};
@ -177,24 +177,19 @@ struct journal_block_tail {
typedef struct journal_revoke_header_s
{
journal_header_t r_header;
int r_count; /* Count of bytes used in the block */
} journal_revoke_header_t;
/* Tail of revoke block, for checksumming */
struct journal_revoke_tail {
__be32 r_checksum;
};
__be32 r_count; /* Count of bytes used in the block */
} jbd2_journal_revoke_header_t;
/* Definitions for the journal tag flags word: */
#define JFS_FLAG_ESCAPE 1 /* on-disk block is escaped */
#define JFS_FLAG_SAME_UUID 2 /* block has same uuid as previous */
#define JFS_FLAG_DELETED 4 /* block deleted by this transaction */
#define JFS_FLAG_LAST_TAG 8 /* last tag in this descriptor block */
#define JBD2_FLAG_ESCAPE 1 /* on-disk block is escaped */
#define JBD2_FLAG_SAME_UUID 2 /* block has same uuid as previous */
#define JBD2_FLAG_DELETED 4 /* block deleted by this transaction */
#define JBD2_FLAG_LAST_TAG 8 /* last tag in this descriptor block */
#define UUID_SIZE 16
#define JFS_USERS_MAX 48
#define JFS_USERS_SIZE (UUID_SIZE * JFS_USERS_MAX)
#define JBD2_USERS_MAX 48
#define JBD2_USERS_SIZE (UUID_SIZE * JBD2_USERS_MAX)
/*
* The journal superblock. All fields are in big-endian byte order.
*/
@ -205,14 +200,14 @@ typedef struct journal_superblock_s
/* 0x000C */
/* Static information describing the journal */
__u32 s_blocksize; /* journal device blocksize */
__u32 s_maxlen; /* total blocks in journal file */
__u32 s_first; /* first block of log information */
__be32 s_blocksize; /* journal device blocksize */
__be32 s_maxlen; /* total blocks in journal file */
__be32 s_first; /* first block of log information */
/* 0x0018 */
/* Dynamic information describing the current state of the log */
__u32 s_sequence; /* first commit ID expected in log */
__u32 s_start; /* blocknr of start of log */
__be32 s_sequence; /* first commit ID expected in log */
__be32 s_start; /* blocknr of start of log */
/* 0x0020 */
/* Error value, as set by journal_abort(). */
@ -220,63 +215,63 @@ typedef struct journal_superblock_s
/* 0x0024 */
/* Remaining fields are only valid in a version-2 superblock */
__u32 s_feature_compat; /* compatible feature set */
__u32 s_feature_incompat; /* incompatible feature set */
__u32 s_feature_ro_compat; /* readonly-compatible feature set */
__be32 s_feature_compat; /* compatible feature set */
__be32 s_feature_incompat; /* incompatible feature set */
__be32 s_feature_ro_compat; /* readonly-compatible feature set */
/* 0x0030 */
__u8 s_uuid[16]; /* 128-bit uuid for journal */
/* 0x0040 */
__u32 s_nr_users; /* Nr of filesystems sharing log */
__be32 s_nr_users; /* Nr of filesystems sharing log */
__u32 s_dynsuper; /* Blocknr of dynamic superblock copy*/
__be32 s_dynsuper; /* Blocknr of dynamic superblock copy*/
/* 0x0048 */
__u32 s_max_transaction; /* Limit of journal blocks per trans.*/
__u32 s_max_trans_data; /* Limit of data blocks per trans. */
__be32 s_max_transaction; /* Limit of journal blocks per trans.*/
__be32 s_max_trans_data; /* Limit of data blocks per trans. */
/* 0x0050 */
__u8 s_checksum_type; /* checksum type */
__u8 s_padding2[3];
__u32 s_padding[42];
__u32 s_checksum; /* crc32c(superblock) */
__be32 s_padding[42];
__be32 s_checksum; /* crc32c(superblock) */
/* 0x0100 */
__u8 s_users[JFS_USERS_SIZE]; /* ids of all fs'es sharing the log */
__u8 s_users[JBD2_USERS_SIZE]; /* ids of all fs'es sharing the log */
/* 0x0400 */
} journal_superblock_t;
#define JFS_HAS_COMPAT_FEATURE(j,mask) \
#define JBD2_HAS_COMPAT_FEATURE(j,mask) \
((j)->j_format_version >= 2 && \
((j)->j_superblock->s_feature_compat & ext2fs_cpu_to_be32((mask))))
#define JFS_HAS_RO_COMPAT_FEATURE(j,mask) \
#define JBD2_HAS_RO_COMPAT_FEATURE(j,mask) \
((j)->j_format_version >= 2 && \
((j)->j_superblock->s_feature_ro_compat & ext2fs_cpu_to_be32((mask))))
#define JFS_HAS_INCOMPAT_FEATURE(j,mask) \
#define JBD2_HAS_INCOMPAT_FEATURE(j,mask) \
((j)->j_format_version >= 2 && \
((j)->j_superblock->s_feature_incompat & ext2fs_cpu_to_be32((mask))))
#define JFS_FEATURE_COMPAT_CHECKSUM 0x00000001
#define JBD2_FEATURE_COMPAT_CHECKSUM 0x00000001
#define JFS_FEATURE_INCOMPAT_REVOKE 0x00000001
#define JFS_FEATURE_INCOMPAT_64BIT 0x00000002
#define JFS_FEATURE_INCOMPAT_ASYNC_COMMIT 0x00000004
#define JFS_FEATURE_INCOMPAT_CSUM_V2 0x00000008
#define JFS_FEATURE_INCOMPAT_CSUM_V3 0x00000010
#define JBD2_FEATURE_INCOMPAT_REVOKE 0x00000001
#define JBD2_FEATURE_INCOMPAT_64BIT 0x00000002
#define JBD2_FEATURE_INCOMPAT_ASYNC_COMMIT 0x00000004
#define JBD2_FEATURE_INCOMPAT_CSUM_V2 0x00000008
#define JBD2_FEATURE_INCOMPAT_CSUM_V3 0x00000010
/* Features known to this kernel version: */
#define JFS_KNOWN_COMPAT_FEATURES 0
#define JFS_KNOWN_ROCOMPAT_FEATURES 0
#define JFS_KNOWN_INCOMPAT_FEATURES (JFS_FEATURE_INCOMPAT_REVOKE|\
JFS_FEATURE_INCOMPAT_ASYNC_COMMIT|\
JFS_FEATURE_INCOMPAT_64BIT|\
JFS_FEATURE_INCOMPAT_CSUM_V2|\
JFS_FEATURE_INCOMPAT_CSUM_V3)
#define JBD2_KNOWN_COMPAT_FEATURES 0
#define JBD2_KNOWN_ROCOMPAT_FEATURES 0
#define JBD2_KNOWN_INCOMPAT_FEATURES (JBD2_FEATURE_INCOMPAT_REVOKE|\
JBD2_FEATURE_INCOMPAT_ASYNC_COMMIT| \
JBD2_FEATURE_INCOMPAT_64BIT|\
JBD2_FEATURE_INCOMPAT_CSUM_V2| \
JBD2_FEATURE_INCOMPAT_CSUM_V3)
#ifdef NO_INLINE_FUNCS
extern size_t journal_tag_bytes(journal_t *journal);
extern int journal_has_csum_v2or3(journal_t *journal);
extern int jbd2_journal_has_csum_v2or3(journal_t *journal);
extern int tid_gt(tid_t x, tid_t y) EXT2FS_ATTR((unused));
extern int tid_geq(tid_t x, tid_t y) EXT2FS_ATTR((unused));
#endif
@ -301,94 +296,94 @@ extern int tid_geq(tid_t x, tid_t y) EXT2FS_ATTR((unused));
#endif /* INCLUDE_INLINE_FUNCS */
/* journal feature predicate functions */
#define JFS_FEATURE_COMPAT_FUNCS(name, flagname) \
_INLINE_ int jfs_has_feature_##name(journal_t *j); \
_INLINE_ int jfs_has_feature_##name(journal_t *j) \
#define JBD2_FEATURE_COMPAT_FUNCS(name, flagname) \
_INLINE_ int jbd2_has_feature_##name(journal_t *j); \
_INLINE_ int jbd2_has_feature_##name(journal_t *j) \
{ \
return ((j)->j_format_version >= 2 && \
((j)->j_superblock->s_feature_compat & \
ext2fs_cpu_to_be32(JFS_FEATURE_COMPAT_##flagname)) != 0); \
ext2fs_cpu_to_be32(JBD2_FEATURE_COMPAT_##flagname)) != 0); \
} \
_INLINE_ void jfs_set_feature_##name(journal_t *j); \
_INLINE_ void jfs_set_feature_##name(journal_t *j) \
_INLINE_ void jbd2_set_feature_##name(journal_t *j); \
_INLINE_ void jbd2_set_feature_##name(journal_t *j) \
{ \
(j)->j_superblock->s_feature_compat |= \
ext2fs_cpu_to_be32(JFS_FEATURE_COMPAT_##flagname); \
ext2fs_cpu_to_be32(JBD2_FEATURE_COMPAT_##flagname); \
} \
_INLINE_ void jfs_clear_feature_##name(journal_t *j); \
_INLINE_ void jfs_clear_feature_##name(journal_t *j) \
_INLINE_ void jbd2_clear_feature_##name(journal_t *j); \
_INLINE_ void jbd2_clear_feature_##name(journal_t *j) \
{ \
(j)->j_superblock->s_feature_compat &= \
~ext2fs_cpu_to_be32(JFS_FEATURE_COMPAT_##flagname); \
~ext2fs_cpu_to_be32(JBD2_FEATURE_COMPAT_##flagname); \
}
#define JFS_FEATURE_RO_COMPAT_FUNCS(name, flagname) \
_INLINE_ int jfs_has_feature_##name(journal_t *j); \
_INLINE_ int jfs_has_feature_##name(journal_t *j) \
#define JBD2_FEATURE_RO_COMPAT_FUNCS(name, flagname) \
_INLINE_ int jbd2_has_feature_##name(journal_t *j); \
_INLINE_ int jbd2_has_feature_##name(journal_t *j) \
{ \
return ((j)->j_format_version >= 2 && \
((j)->j_superblock->s_feature_ro_compat & \
ext2fs_cpu_to_be32(JFS_FEATURE_RO_COMPAT_##flagname)) != 0); \
ext2fs_cpu_to_be32(JBD2_FEATURE_RO_COMPAT_##flagname)) != 0); \
} \
_INLINE_ void jfs_set_feature_##name(journal_t *j); \
_INLINE_ void jfs_set_feature_##name(journal_t *j) \
_INLINE_ void jbd2_set_feature_##name(journal_t *j); \
_INLINE_ void jbd2_set_feature_##name(journal_t *j) \
{ \
(j)->j_superblock->s_feature_ro_compat |= \
ext2fs_cpu_to_be32(JFS_FEATURE_RO_COMPAT_##flagname); \
ext2fs_cpu_to_be32(JBD2_FEATURE_RO_COMPAT_##flagname); \
} \
_INLINE_ void jfs_clear_feature_##name(journal_t *j); \
_INLINE_ void jfs_clear_feature_##name(journal_t *j) \
_INLINE_ void jbd2_clear_feature_##name(journal_t *j); \
_INLINE_ void jbd2_clear_feature_##name(journal_t *j) \
{ \
(j)->j_superblock->s_feature_ro_compat &= \
~ext2fs_cpu_to_be32(JFS_FEATURE_RO_COMPAT_##flagname); \
~ext2fs_cpu_to_be32(JBD2_FEATURE_RO_COMPAT_##flagname); \
}
#define JFS_FEATURE_INCOMPAT_FUNCS(name, flagname) \
_INLINE_ int jfs_has_feature_##name(journal_t *j); \
_INLINE_ int jfs_has_feature_##name(journal_t *j) \
#define JBD2_FEATURE_INCOMPAT_FUNCS(name, flagname) \
_INLINE_ int jbd2_has_feature_##name(journal_t *j); \
_INLINE_ int jbd2_has_feature_##name(journal_t *j) \
{ \
return ((j)->j_format_version >= 2 && \
((j)->j_superblock->s_feature_incompat & \
ext2fs_cpu_to_be32(JFS_FEATURE_INCOMPAT_##flagname)) != 0); \
ext2fs_cpu_to_be32(JBD2_FEATURE_INCOMPAT_##flagname)) != 0); \
} \
_INLINE_ void jfs_set_feature_##name(journal_t *j); \
_INLINE_ void jfs_set_feature_##name(journal_t *j) \
_INLINE_ void jbd2_set_feature_##name(journal_t *j); \
_INLINE_ void jbd2_set_feature_##name(journal_t *j) \
{ \
(j)->j_superblock->s_feature_incompat |= \
ext2fs_cpu_to_be32(JFS_FEATURE_INCOMPAT_##flagname); \
ext2fs_cpu_to_be32(JBD2_FEATURE_INCOMPAT_##flagname); \
} \
_INLINE_ void jfs_clear_feature_##name(journal_t *j); \
_INLINE_ void jfs_clear_feature_##name(journal_t *j) \
_INLINE_ void jbd2_clear_feature_##name(journal_t *j); \
_INLINE_ void jbd2_clear_feature_##name(journal_t *j) \
{ \
(j)->j_superblock->s_feature_incompat &= \
~ext2fs_cpu_to_be32(JFS_FEATURE_INCOMPAT_##flagname); \
~ext2fs_cpu_to_be32(JBD2_FEATURE_INCOMPAT_##flagname); \
}
#else
#define JFS_FEATURE_COMPAT_FUNCS(name, flagname) \
extern int jfs_has_feature_##name(journal_t *j); \
extern void jfs_set_feature_##name(journal_t *j); \
extern void jfs_clear_feature_##name(journal_t *j);
#define JBD2_FEATURE_COMPAT_FUNCS(name, flagname) \
extern int jbd2_has_feature_##name(journal_t *j); \
extern void jbd2_set_feature_##name(journal_t *j); \
extern void jbd2_clear_feature_##name(journal_t *j);
#define JFS_FEATURE_RO_COMPAT_FUNCS(name, flagname) \
extern int jfs_has_feature_##name(journal_t *j); \
extern void jfs_set_feature_##name(journal_t *j); \
extern void jfs_clear_feature_##name(journal_t *j);
#define JBD2_FEATURE_RO_COMPAT_FUNCS(name, flagname) \
extern int jbd2_has_feature_##name(journal_t *j); \
extern void jbd2_set_feature_##name(journal_t *j); \
extern void jbd2_clear_feature_##name(journal_t *j);
#define JFS_FEATURE_INCOMPAT_FUNCS(name, flagname) \
extern int jfs_has_feature_##name(journal_t *j); \
extern void jfs_set_feature_##name(journal_t *j); \
extern void jfs_clear_feature_##name(journal_t *j);
#define JBD2_FEATURE_INCOMPAT_FUNCS(name, flagname) \
extern int jbd2_has_feature_##name(journal_t *j); \
extern void jbd2_set_feature_##name(journal_t *j); \
extern void jbd2_clear_feature_##name(journal_t *j);
#endif /* (defined(E2FSCK_INCLUDE_INLINE_FUNCS) || !defined(NO_INLINE_FUNCS)) */
JFS_FEATURE_COMPAT_FUNCS(checksum, CHECKSUM)
JBD2_FEATURE_COMPAT_FUNCS(checksum, CHECKSUM)
JFS_FEATURE_INCOMPAT_FUNCS(revoke, REVOKE)
JFS_FEATURE_INCOMPAT_FUNCS(64bit, 64BIT)
JFS_FEATURE_INCOMPAT_FUNCS(async_commit, ASYNC_COMMIT)
JFS_FEATURE_INCOMPAT_FUNCS(csum2, CSUM_V2)
JFS_FEATURE_INCOMPAT_FUNCS(csum3, CSUM_V3)
JBD2_FEATURE_INCOMPAT_FUNCS(revoke, REVOKE)
JBD2_FEATURE_INCOMPAT_FUNCS(64bit, 64BIT)
JBD2_FEATURE_INCOMPAT_FUNCS(async_commit, ASYNC_COMMIT)
JBD2_FEATURE_INCOMPAT_FUNCS(csum2, CSUM_V2)
JBD2_FEATURE_INCOMPAT_FUNCS(csum3, CSUM_V3)
#if (defined(E2FSCK_INCLUDE_INLINE_FUNCS) || !defined(NO_INLINE_FUNCS))
/*
@ -398,23 +393,23 @@ _INLINE_ size_t journal_tag_bytes(journal_t *journal)
{
size_t sz;
if (jfs_has_feature_csum3(journal))
if (jbd2_has_feature_csum3(journal))
return sizeof(journal_block_tag3_t);
sz = sizeof(journal_block_tag_t);
if (jfs_has_feature_csum2(journal))
if (jbd2_has_feature_csum2(journal))
sz += sizeof(__u16);
if (jfs_has_feature_64bit(journal))
if (jbd2_has_feature_64bit(journal))
return sz;
return sz - sizeof(__u32);
}
_INLINE_ int journal_has_csum_v2or3(journal_t *journal)
_INLINE_ int jbd2_journal_has_csum_v2or3(journal_t *journal)
{
if (jfs_has_feature_csum2(journal) || jfs_has_feature_csum3(journal))
if (jbd2_has_feature_csum2(journal) || jbd2_has_feature_csum3(journal))
return 1;
return 0;

550
src/ext2fs/link.c
View File

@ -18,6 +18,155 @@
#include "ext2_fs.h"
#include "ext2fs.h"
#include "ext2fsP.h"
#define EXT2_DX_ROOT_OFF 24
struct dx_frame {
__u8 *buf;
blk64_t pblock;
struct ext2_dx_countlimit *head;
struct ext2_dx_entry *entries;
struct ext2_dx_entry *at;
};
struct dx_lookup_info {
const char *name;
int namelen;
int hash_alg;
__u32 hash;
int levels;
struct dx_frame frames[EXT4_HTREE_LEVEL];
};
static errcode_t alloc_dx_frame(ext2_filsys fs, struct dx_frame *frame)
{
return ext2fs_get_mem(fs->blocksize, &frame->buf);
}
static void dx_release(struct dx_lookup_info *info)
{
// struct ext2_dx_root_info *root;
int level;
for (level = 0; level < info->levels; level++) {
if (info->frames[level].buf == NULL)
break;
ext2fs_free_mem(&(info->frames[level].buf));
}
info->levels = 0;
}
static void dx_search_entry(struct dx_frame *frame, int count, __u32 hash)
{
struct ext2_dx_entry *p, *q, *m;
p = frame->entries + 1;
q = frame->entries + count - 1;
while (p <= q) {
m = p + (q - p) / 2;
if (ext2fs_le32_to_cpu(m->hash) > hash)
q = m - 1;
else
p = m + 1;
}
frame->at = p - 1;
}
static errcode_t load_logical_dir_block(ext2_filsys fs, ext2_ino_t dir,
struct ext2_inode *diri, blk64_t block,
blk64_t *pblk, void *buf)
{
errcode_t errcode;
int ret_flags;
errcode = ext2fs_bmap2(fs, dir, diri, NULL, 0, block, &ret_flags,
pblk);
if (errcode)
return errcode;
if (ret_flags & BMAP_RET_UNINIT)
return EXT2_ET_DIR_CORRUPTED;
return ext2fs_read_dir_block4(fs, *pblk, buf, 0, dir);
}
static errcode_t dx_lookup(ext2_filsys fs, ext2_ino_t dir,
struct ext2_inode *diri, struct dx_lookup_info *info)
{
struct ext2_dx_root_info *root;
errcode_t errcode;
int level = 0;
int count, limit;
int hash_alg;
int hash_flags = diri->i_flags & EXT4_CASEFOLD_FL;
__u32 minor_hash;
struct dx_frame *frame;
errcode = alloc_dx_frame(fs, &(info->frames[0]));
if (errcode)
return errcode;
info->levels = 1;
errcode = load_logical_dir_block(fs, dir, diri, 0,
&(info->frames[0].pblock),
info->frames[0].buf);
if (errcode)
goto out_err;
root = (struct ext2_dx_root_info*)(info->frames[0].buf + EXT2_DX_ROOT_OFF);
hash_alg = root->hash_version;
if (hash_alg != EXT2_HASH_TEA && hash_alg != EXT2_HASH_HALF_MD4 &&
hash_alg != EXT2_HASH_LEGACY) {
errcode = EXT2_ET_DIRHASH_UNSUPP;
goto out_err;
}
if (hash_alg <= EXT2_HASH_TEA &&
fs->super->s_flags & EXT2_FLAGS_UNSIGNED_HASH)
hash_alg += 3;
if (root->indirect_levels >= ext2_dir_htree_level(fs)) {
errcode = EXT2_ET_DIR_CORRUPTED;
goto out_err;
}
info->hash_alg = hash_alg;
errcode = ext2fs_dirhash2(hash_alg, info->name, info->namelen,
fs->encoding, hash_flags,
fs->super->s_hash_seed, &info->hash,
&minor_hash);
if (errcode)
goto out_err;
for (level = 0; level <= root->indirect_levels; level++) {
frame = &(info->frames[level]);
if (level > 0) {
errcode = alloc_dx_frame(fs, frame);
if (errcode)
goto out_err;
info->levels++;
errcode = load_logical_dir_block(fs, dir, diri,
ext2fs_le32_to_cpu(info->frames[level-1].at->block) & 0x0fffffff,
&(frame->pblock), frame->buf);
if (errcode)
goto out_err;
}
errcode = ext2fs_get_dx_countlimit(fs, (struct ext2_dir_entry*)frame->buf,
&(frame->head), NULL);
if (errcode)
goto out_err;
count = ext2fs_le16_to_cpu(frame->head->count);
limit = ext2fs_le16_to_cpu(frame->head->limit);
frame->entries = (struct ext2_dx_entry *)(frame->head);
if (!count || count > limit) {
errcode = EXT2_ET_DIR_CORRUPTED;
goto out_err;
}
dx_search_entry(frame, count, info->hash);
}
return 0;
out_err:
dx_release(info);
return errcode;
}
struct link_struct {
ext2_filsys fs;
@ -31,7 +180,9 @@ struct link_struct {
struct ext2_super_block *sb;
};
static int link_proc(struct ext2_dir_entry *dirent,
static int link_proc(ext2_ino_t dir EXT2FS_ATTR((unused)),
int entru EXT2FS_ATTR((unused)),
struct ext2_dir_entry *dirent,
int offset,
int blocksize,
char *buf,
@ -42,7 +193,6 @@ static int link_proc(struct ext2_dir_entry *dirent,
unsigned int rec_len, min_rec_len, curr_rec_len;
int ret = 0;
int csum_size = 0;
struct ext2_dir_entry_tail *t;
if (ls->done)
return DIRENT_ABORT;
@ -70,40 +220,6 @@ static int link_proc(struct ext2_dir_entry *dirent,
ret = DIRENT_CHANGED;
}
/*
* Since ext2fs_link blows away htree data, we need to be
* careful -- if metadata_csum is enabled and we're passed in
* a dirent that contains htree data, we need to create the
* fake entry at the end of the block that hides the checksum.
*/
/* De-convert a dx_node block */
if (csum_size &&
curr_rec_len == ls->fs->blocksize &&
!dirent->inode) {
curr_rec_len -= csum_size;
ls->err = ext2fs_set_rec_len(ls->fs, curr_rec_len, dirent);
if (ls->err)
return DIRENT_ABORT;
t = EXT2_DIRENT_TAIL(buf, ls->fs->blocksize);
ext2fs_initialize_dirent_tail(ls->fs, t);
ret = DIRENT_CHANGED;
}
/* De-convert a dx_root block */
if (csum_size &&
curr_rec_len == ls->fs->blocksize - EXT2_DIR_REC_LEN(1) &&
offset == EXT2_DIR_REC_LEN(1) &&
dirent->name[0] == '.' && dirent->name[1] == '.') {
curr_rec_len -= csum_size;
ls->err = ext2fs_set_rec_len(ls->fs, curr_rec_len, dirent);
if (ls->err)
return DIRENT_ABORT;
t = EXT2_DIRENT_TAIL(buf, ls->fs->blocksize);
ext2fs_initialize_dirent_tail(ls->fs, t);
ret = DIRENT_CHANGED;
}
/*
* If the directory entry is used, see if we can split the
* directory entry to make room for the new name. If so,
@ -144,6 +260,343 @@ static int link_proc(struct ext2_dir_entry *dirent,
return DIRENT_ABORT|DIRENT_CHANGED;
}
static errcode_t add_dirent_to_buf(ext2_filsys fs, e2_blkcnt_t blockcnt,
char *buf, ext2_ino_t dir,
struct ext2_inode *diri, const char *name,
ext2_ino_t ino, int flags, blk64_t *pblkp)
{
struct dir_context ctx;
struct link_struct ls;
errcode_t retval;
retval = load_logical_dir_block(fs, dir, diri, blockcnt, pblkp, buf);
if (retval)
return retval;
ctx.errcode = 0;
ctx.func = link_proc;
ctx.dir = dir;
ctx.flags = DIRENT_FLAG_INCLUDE_EMPTY;
ctx.buf = buf;
ctx.priv_data = &ls;
ls.fs = fs;
ls.name = name;
ls.namelen = strlen(name);
ls.inode = ino;
ls.flags = flags;
ls.done = 0;
ls.sb = fs->super;
ls.blocksize = fs->blocksize;
ls.err = 0;
ext2fs_process_dir_block(fs, pblkp, blockcnt, 0, 0, &ctx);
if (ctx.errcode)
return ctx.errcode;
if (ls.err)
return ls.err;
if (!ls.done)
return EXT2_ET_DIR_NO_SPACE;
return 0;
}
struct dx_hash_map {
__u32 hash;
int size;
int off;
};
static EXT2_QSORT_TYPE dx_hash_map_cmp(const void *ap, const void *bp)
{
const struct dx_hash_map *a = ap, *b = bp;
if (a->hash < b->hash)
return -1;
if (a->hash > b->hash)
return 1;
return 0;
}
static errcode_t dx_move_dirents(ext2_filsys fs, struct dx_hash_map *map,
int count, __u8 *from, __u8 *to)
{
struct ext2_dir_entry *de;
int i;
int rec_len = 0;
errcode_t retval;
int csum_size = 0;
__u8 *base = to;
if (ext2fs_has_feature_metadata_csum(fs->super))
csum_size = sizeof(struct ext2_dir_entry_tail);
for (i = 0; i < count; i++) {
de = (struct ext2_dir_entry*)(from + map[i].off);
rec_len = EXT2_DIR_REC_LEN(ext2fs_dirent_name_len(de));
memcpy(to, de, rec_len);
retval = ext2fs_set_rec_len(fs, rec_len, (struct ext2_dir_entry*)to);
if (retval)
return retval;
to += rec_len;
}
/*
* Update rec_len of the last dir entry to stretch to the end of block
*/
to -= rec_len;
rec_len = fs->blocksize - (to - base) - csum_size;
retval = ext2fs_set_rec_len(fs, rec_len, (struct ext2_dir_entry*)to);
if (retval)
return retval;
if (csum_size)
ext2fs_initialize_dirent_tail(fs,
EXT2_DIRENT_TAIL(base, fs->blocksize));
return 0;
}
static errcode_t dx_insert_entry(ext2_filsys fs, ext2_ino_t dir,
struct dx_lookup_info *info, int level,
__u32 hash, blk64_t lblk)
{
int pcount;
struct ext2_dx_entry *top, *new;
pcount = ext2fs_le16_to_cpu(info->frames[level].head->count);
top = info->frames[level].entries + pcount;
new = info->frames[level].at + 1;
memmove(new + 1, new, (char *)top - (char *)new);
new->hash = ext2fs_cpu_to_le32(hash);
new->block = ext2fs_cpu_to_le32(lblk);
info->frames[level].head->count = ext2fs_cpu_to_le16(pcount + 1);
return ext2fs_write_dir_block4(fs, info->frames[level].pblock,
info->frames[level].buf, 0, dir);
}
static errcode_t dx_split_leaf(ext2_filsys fs, ext2_ino_t dir,
struct ext2_inode *diri,
struct dx_lookup_info *info, __u8 *buf,
blk64_t leaf_pblk, blk64_t new_lblk,
blk64_t new_pblk)
{
int hash_flags = diri->i_flags & EXT4_CASEFOLD_FL;
struct ext2_dir_entry *de;
void *buf2;
errcode_t retval = 0;
int rec_len;
int offset, move_size;
int i, count = 0;
struct dx_hash_map *map;
int continued;
__u32 minor_hash;
retval = ext2fs_get_mem(fs->blocksize, &buf2);
if (retval)
return retval;
retval = ext2fs_get_array(fs->blocksize / 12,
sizeof(struct dx_hash_map), &map);
if (retval) {
ext2fs_free_mem(&buf2);
return retval;
}
for (offset = 0; offset < fs->blocksize; offset += rec_len) {
de = (struct ext2_dir_entry*)(buf + offset);
retval = ext2fs_get_rec_len(fs, de, &rec_len);
if (retval)
goto out;
if (ext2fs_dirent_name_len(de) > 0 && de->inode) {
map[count].off = offset;
map[count].size = rec_len;
retval = ext2fs_dirhash2(info->hash_alg, de->name,
ext2fs_dirent_name_len(de),
fs->encoding, hash_flags,
fs->super->s_hash_seed,
&(map[count].hash),
&minor_hash);
if (retval)
goto out;
count++;
}
}
qsort(map, count, sizeof(struct dx_hash_map), dx_hash_map_cmp);
move_size = 0;
/* Find place to split block */
for (i = count - 1; i >= 0; i--) {
if (move_size + map[i].size / 2 > fs->blocksize / 2)
break;
move_size += map[i].size;
}
/* Let i be the first entry to move */
i++;
/* Move selected directory entries to new block */
retval = dx_move_dirents(fs, map + i, count - i, buf, buf2);
if (retval)
goto out;
retval = ext2fs_write_dir_block4(fs, new_pblk, buf2, 0, dir);
if (retval)
goto out;
/* Repack remaining entries in the old block */
retval = dx_move_dirents(fs, map, i, buf, buf2);
if (retval)
goto out;
retval = ext2fs_write_dir_block4(fs, leaf_pblk, buf2, 0, dir);
if (retval)
goto out;
/* Update parent node */
continued = map[i].hash == map[i-1].hash;
retval = dx_insert_entry(fs, dir, info, info->levels - 1,
map[i].hash + continued, new_lblk);
out:
ext2fs_free_mem(&buf2);
ext2fs_free_mem(&map);
return retval;
}
static errcode_t dx_grow_tree(ext2_filsys fs, ext2_ino_t dir,
struct ext2_inode *diri,
struct dx_lookup_info *info, __u8 *buf,
blk64_t leaf_pblk)
{
int i;
errcode_t retval;
ext2_off64_t size = EXT2_I_SIZE(diri);
blk64_t lblk, pblk;
struct ext2_dir_entry *de;
struct ext2_dx_countlimit *head;
int csum_size = 0;
int count;
if (ext2fs_has_feature_metadata_csum(fs->super))
csum_size = sizeof(struct ext2_dx_tail);
/* Find level which can accommodate new child */
for (i = info->levels - 1; i >= 0; i--)
if (ext2fs_le16_to_cpu(info->frames[i].head->count) <
ext2fs_le16_to_cpu(info->frames[i].head->limit))
break;
/* Need to grow tree depth? */
if (i < 0 && info->levels >= ext2_dir_htree_level(fs))
return EXT2_ET_DIR_NO_SPACE;
lblk = size / fs->blocksize;
size += fs->blocksize;
retval = ext2fs_inode_size_set(fs, diri, size);
if (retval)
return retval;
retval = ext2fs_fallocate(fs,
EXT2_FALLOCATE_FORCE_INIT | EXT2_FALLOCATE_ZERO_BLOCKS,
dir, diri, 0, lblk, 1);
if (retval)
return retval;
retval = ext2fs_write_inode(fs, dir, diri);
if (retval)
return retval;
retval = ext2fs_bmap2(fs, dir, diri, NULL, 0, lblk, NULL, &pblk);
if (retval)
return retval;
/* Only leaf addition needed? */
if (i == info->levels - 1)
return dx_split_leaf(fs, dir, diri, info, buf, leaf_pblk,
lblk, pblk);
de = (struct ext2_dir_entry*)buf;
de->inode = 0;
ext2fs_dirent_set_name_len(de, 0);
ext2fs_dirent_set_file_type(de, 0);
retval = ext2fs_set_rec_len(fs, fs->blocksize, de);
if (retval)
return retval;
head = (struct ext2_dx_countlimit*)(buf + 8);
count = ext2fs_le16_to_cpu(info->frames[i+1].head->count);
/* Growing tree depth? */
if (i < 0) {
struct ext2_dx_root_info *root;
memcpy(head, info->frames[0].entries,
count * sizeof(struct ext2_dx_entry));
head->limit = ext2fs_cpu_to_le16(
(fs->blocksize - (8 + csum_size)) /
sizeof(struct ext2_dx_entry));
/* head->count gets set by memcpy above to correct value */
/* Now update tree root */
info->frames[0].head->count = ext2fs_cpu_to_le16(1);
info->frames[0].entries[0].block = ext2fs_cpu_to_le32(lblk);
root = (struct ext2_dx_root_info*)(info->frames[0].buf + EXT2_DX_ROOT_OFF);
root->indirect_levels++;
} else {
/* Splitting internal node in two */
int count1 = count / 2;
int count2 = count - count1;
__u32 split_hash = ext2fs_le32_to_cpu(info->frames[i+1].entries[count1].hash);
memcpy(head, info->frames[i+1].entries + count1,
count2 * sizeof(struct ext2_dx_entry));
head->count = ext2fs_cpu_to_le16(count2);
head->limit = ext2fs_cpu_to_le16(
(fs->blocksize - (8ULL + csum_size)) /
sizeof(struct ext2_dx_entry));
info->frames[i+1].head->count = ext2fs_cpu_to_le16(count1);
/* Update parent node */
retval = dx_insert_entry(fs, dir, info, i, split_hash, lblk);
if (retval)
return retval;
}
/* Writeout split block / updated root */
retval = ext2fs_write_dir_block4(fs, info->frames[i+1].pblock,
info->frames[i+1].buf, 0, dir);
if (retval)
return retval;
/* Writeout new tree block */
retval = ext2fs_write_dir_block4(fs, pblk, buf, 0, dir);
if (retval)
return retval;
return 0;
}
static errcode_t dx_link(ext2_filsys fs, ext2_ino_t dir,
struct ext2_inode *diri, const char *name,
ext2_ino_t ino, int flags)
{
struct dx_lookup_info dx_info;
errcode_t retval;
void *blockbuf;
int restart = 0;
blk64_t leaf_pblk;
retval = ext2fs_get_mem(fs->blocksize, &blockbuf);
if (retval)
return retval;
dx_info.name = name;
dx_info.namelen = strlen(name);
again:
retval = dx_lookup(fs, dir, diri, &dx_info);
if (retval)
goto free_buf;
retval = add_dirent_to_buf(fs,
ext2fs_le32_to_cpu(dx_info.frames[dx_info.levels-1].at->block) & 0x0fffffff,
blockbuf, dir, diri, name, ino, flags, &leaf_pblk);
/*
* Success or error other than ENOSPC...? We are done. We may need upto
* two tries to add entry. One to split htree node and another to add
* new leaf block.
*/
if (restart >= dx_info.levels || retval != EXT2_ET_DIR_NO_SPACE)
goto free_frames;
retval = dx_grow_tree(fs, dir, diri, &dx_info, blockbuf, leaf_pblk);
if (retval)
goto free_frames;
/* Restart everything now that the tree is larger */
restart++;
dx_release(&dx_info);
goto again;
free_frames:
dx_release(&dx_info);
free_buf:
ext2fs_free_mem(&blockbuf);
return retval;
}
/*
* Note: the low 3 bits of the flags field are used as the directory
* entry filetype.
@ -163,6 +616,12 @@ errcode_t ext2fs_link(ext2_filsys fs, ext2_ino_t dir, const char *name,
if (!(fs->flags & EXT2_FLAG_RW))
return EXT2_ET_RO_FILSYS;
if ((retval = ext2fs_read_inode(fs, dir, &inode)) != 0)
return retval;
if (inode.i_flags & EXT2_INDEX_FL)
return dx_link(fs, dir, &inode, name, ino, flags);
ls.fs = fs;
ls.name = name;
ls.namelen = name ? strlen(name) : 0;
@ -173,8 +632,8 @@ errcode_t ext2fs_link(ext2_filsys fs, ext2_ino_t dir, const char *name,
ls.blocksize = fs->blocksize;
ls.err = 0;
retval = ext2fs_dir_iterate(fs, dir, DIRENT_FLAG_INCLUDE_EMPTY,
0, link_proc, &ls);
retval = ext2fs_dir_iterate2(fs, dir, DIRENT_FLAG_INCLUDE_EMPTY,
NULL, link_proc, &ls);
if (retval)
return retval;
if (ls.err)
@ -182,20 +641,5 @@ errcode_t ext2fs_link(ext2_filsys fs, ext2_ino_t dir, const char *name,
if (!ls.done)
return EXT2_ET_DIR_NO_SPACE;
if ((retval = ext2fs_read_inode(fs, dir, &inode)) != 0)
return retval;
/*
* If this function changes to preserve the htree, remove the
* two hunks in link_proc that shove checksum tails into the
* former dx_root/dx_node blocks.
*/
if (inode.i_flags & EXT2_INDEX_FL) {
inode.i_flags &= ~EXT2_INDEX_FL;
if ((retval = ext2fs_write_inode(fs, dir, &inode)) != 0)
return retval;
}
return 0;
}

22
src/ext2fs/mkdir.c
View File

@ -43,6 +43,7 @@ errcode_t ext2fs_mkdir(ext2_filsys fs, ext2_ino_t parent, ext2_ino_t inum,
blk64_t blk;
char *block = 0;
int inline_data = 0;
int drop_refcount = 0;
EXT2_CHECK_MAGIC(fs, EXT2_ET_MAGIC_EXT2FS_FILSYS);
@ -143,6 +144,14 @@ errcode_t ext2fs_mkdir(ext2_filsys fs, ext2_ino_t parent, ext2_ino_t inum,
}
}
/*
* Update accounting....
*/
if (!inline_data)
ext2fs_block_alloc_stats2(fs, blk, +1);
ext2fs_inode_alloc_stats2(fs, ino, +1, 1);
drop_refcount = 1;
/*
* Link the directory into the filesystem hierarchy
*/
@ -174,17 +183,16 @@ errcode_t ext2fs_mkdir(ext2_filsys fs, ext2_ino_t parent, ext2_ino_t inum,
if (retval)
goto cleanup;
}
/*
* Update accounting....
*/
if (!inline_data)
ext2fs_block_alloc_stats2(fs, blk, +1);
ext2fs_inode_alloc_stats2(fs, ino, +1, 1);
drop_refcount = 0;
cleanup:
if (block)
ext2fs_free_mem(&block);
if (drop_refcount) {
if (!inline_data)
ext2fs_block_alloc_stats2(fs, blk, -1);
ext2fs_inode_alloc_stats2(fs, ino, -1, 1);
}
return retval;
}

16
src/ext2fs/mkjournal.c
View File

@ -52,7 +52,7 @@ errcode_t ext2fs_create_journal_superblock(ext2_filsys fs,
errcode_t retval;
journal_superblock_t *jsb;
if (num_blocks < JFS_MIN_JOURNAL_BLOCKS)
if (num_blocks < JBD2_MIN_JOURNAL_BLOCKS)
return EXT2_ET_JOURNAL_TOO_SMALL;
if ((retval = ext2fs_get_mem(fs->blocksize, &jsb)))
@ -60,11 +60,11 @@ errcode_t ext2fs_create_journal_superblock(ext2_filsys fs,
memset (jsb, 0, fs->blocksize);
jsb->s_header.h_magic = htonl(JFS_MAGIC_NUMBER);
jsb->s_header.h_magic = htonl(JBD2_MAGIC_NUMBER);
if (flags & EXT2_MKJOURNAL_V1_SUPER)
jsb->s_header.h_blocktype = htonl(JFS_SUPERBLOCK_V1);
jsb->s_header.h_blocktype = htonl(JBD2_SUPERBLOCK_V1);
else
jsb->s_header.h_blocktype = htonl(JFS_SUPERBLOCK_V2);
jsb->s_header.h_blocktype = htonl(JBD2_SUPERBLOCK_V2);
jsb->s_blocksize = htonl(fs->blocksize);
jsb->s_maxlen = htonl(num_blocks);
jsb->s_nr_users = htonl(1);
@ -394,8 +394,8 @@ errcode_t ext2fs_add_journal_device(ext2_filsys fs, ext2_filsys journal_dev)
return retval;
jsb = (journal_superblock_t *) buf;
if ((jsb->s_header.h_magic != (unsigned) ntohl(JFS_MAGIC_NUMBER)) ||
(jsb->s_header.h_blocktype != (unsigned) ntohl(JFS_SUPERBLOCK_V2)))
if ((jsb->s_header.h_magic != (unsigned) ntohl(JBD2_MAGIC_NUMBER)) ||
(jsb->s_header.h_blocktype != (unsigned) ntohl(JBD2_SUPERBLOCK_V2)))
return EXT2_ET_NO_JOURNAL_SB;
if (ntohl(jsb->s_blocksize) != (unsigned long) fs->blocksize)
@ -403,7 +403,7 @@ errcode_t ext2fs_add_journal_device(ext2_filsys fs, ext2_filsys journal_dev)
/* Check and see if this filesystem has already been added */
nr_users = ntohl(jsb->s_nr_users);
if (nr_users > JFS_USERS_MAX)
if (nr_users > JBD2_USERS_MAX)
return EXT2_ET_CORRUPT_JOURNAL_SB;
for (i=0; i < nr_users; i++) {
if (memcmp(fs->super->s_uuid,
@ -575,7 +575,7 @@ main(int argc, char **argv)
exit(1);
}
retval = ext2fs_add_journal_inode(fs, JFS_MIN_JOURNAL_BLOCKS, 0);
retval = ext2fs_add_journal_inode(fs, JBD2_MIN_JOURNAL_BLOCKS, 0);
if (retval) {
com_err(argv[0], retval, "while adding journal to %s",
device_name);

15
src/ext2fs/mmp.c
View File

@ -59,8 +59,21 @@ errcode_t ext2fs_mmp_read(ext2_filsys fs, blk64_t mmp_blk, void *buf)
* regardless of how the io_manager is doing reads, to avoid caching of
* the MMP block by the io_manager or the VM. It needs to be fresh. */
if (fs->mmp_fd <= 0) {
fs->mmp_fd = open(fs->device_name, O_RDWR | O_DIRECT);
int flags = O_RDWR | O_DIRECT;
retry:
fs->mmp_fd = open(fs->device_name, flags);
if (fs->mmp_fd < 0) {
struct stat st;
/* Avoid O_DIRECT for filesystem image files if open
* fails, since it breaks when running on tmpfs. */
if (errno == EINVAL && (flags & O_DIRECT) &&
stat(fs->device_name, &st) == 0 &&
S_ISREG(st.st_mode)) {
flags &= ~O_DIRECT;
goto retry;
}
retval = EXT2_ET_MMP_OPEN_DIRECT;
goto out;
}

9
src/ext2fs/nt_io.c
View File

@ -81,7 +81,7 @@ static errcode_t nt_write_blk(io_channel channel, unsigned long block, int count
static errcode_t nt_write_blk64(io_channel channel, unsigned long long block, int count, const void* data);
static errcode_t nt_flush(io_channel channel);
static struct struct_io_manager struct_nt_manager = {
struct struct_io_manager struct_nt_manager = {
.magic = EXT2_ET_MAGIC_IO_MANAGER,
.name = "NT I/O Manager",
.open = nt_open,
@ -94,10 +94,7 @@ static struct struct_io_manager struct_nt_manager = {
.flush = nt_flush
};
io_manager nt_io_manager(void)
{
return &struct_nt_manager;
}
io_manager nt_io_manager = &struct_nt_manager;
// Convert Win32 errors to unix errno
typedef struct {
@ -530,7 +527,7 @@ static errcode_t nt_open(const char *name, int flags, io_channel *channel)
// Initialize data
io->magic = EXT2_ET_MAGIC_IO_CHANNEL;
io->manager = nt_io_manager();
io->manager = nt_io_manager;
strcpy(io->name, name);
io->block_size = EXT2_MIN_BLOCK_SIZE;
io->refcount = 1;

21
src/ext2fs/openfs.c
View File

@ -29,7 +29,6 @@
#include "ext2_fs.h"
#include "ext2fs.h"
#include "e2image.h"
@ -135,6 +134,7 @@ errcode_t ext2fs_open2(const char *name, const char *io_options,
int j;
#endif
char *time_env;
int csum_retries = 0;
EXT2_CHECK_MAGIC(manager, EXT2_ET_MAGIC_IO_MANAGER);
@ -223,6 +223,7 @@ errcode_t ext2fs_open2(const char *name, const char *io_options,
if (retval)
goto cleanup;
}
retry:
retval = io_channel_read_blk(fs->io, superblock, -SUPERBLOCK_SIZE,
fs->super);
if (retval)
@ -234,8 +235,11 @@ errcode_t ext2fs_open2(const char *name, const char *io_options,
retval = 0;
if (!ext2fs_verify_csum_type(fs, fs->super))
retval = EXT2_ET_UNKNOWN_CSUM;
if (!ext2fs_superblock_csum_verify(fs, fs->super))
if (!ext2fs_superblock_csum_verify(fs, fs->super)) {
if (csum_retries++ < 3)
goto retry;
retval = EXT2_ET_SB_CSUM_INVALID;
}
}
#ifdef WORDS_BIGENDIAN
@ -395,6 +399,8 @@ errcode_t ext2fs_open2(const char *name, const char *io_options,
}
fs->desc_blocks = ext2fs_div_ceil(fs->group_desc_count,
EXT2_DESC_PER_BLOCK(fs->super));
if (flags & EXT2_FLAG_SUPER_ONLY)
goto skip_read_bg;
retval = ext2fs_get_array(fs->desc_blocks, fs->blocksize,
&fs->group_desc);
if (retval)
@ -435,7 +441,8 @@ errcode_t ext2fs_open2(const char *name, const char *io_options,
gdp = (struct ext2_group_desc *) dest;
for (j=0; j < groups_per_block*first_meta_bg; j++) {
gdp = ext2fs_group_desc(fs, fs->group_desc, j);
ext2fs_swap_group_desc2(fs, gdp);
if (gdp)
ext2fs_swap_group_desc2(fs, gdp);
}
#endif
dest += fs->blocksize*first_meta_bg;
@ -455,7 +462,8 @@ errcode_t ext2fs_open2(const char *name, const char *io_options,
for (j=0; j < groups_per_block; j++) {
gdp = ext2fs_group_desc(fs, fs->group_desc,
i * groups_per_block + j);
ext2fs_swap_group_desc2(fs, gdp);
if (gdp)
ext2fs_swap_group_desc2(fs, gdp);
}
#endif
dest += fs->blocksize;
@ -481,7 +489,7 @@ errcode_t ext2fs_open2(const char *name, const char *io_options,
if (fs->flags & EXT2_FLAG_RW)
ext2fs_mark_super_dirty(fs);
}
skip_read_bg:
if (ext2fs_has_feature_mmp(fs->super) &&
!(flags & EXT2_FLAG_SKIP_MMP) &&
(flags & (EXT2_FLAG_RW | EXT2_FLAG_EXCLUSIVE))) {
@ -503,6 +511,9 @@ errcode_t ext2fs_open2(const char *name, const char *io_options,
ext2fs_set_feature_shared_blocks(fs->super);
}
// if (ext2fs_has_feature_casefold(fs->super))
// fs->encoding = ext2fs_load_nls_table(fs->super->s_encoding);
fs->flags &= ~EXT2_FLAG_NOFREE_ON_ERROR;
*ret_fs = fs;

46
src/ext2fs/rw_bitmaps.c
View File

@ -195,6 +195,16 @@ static errcode_t mark_uninit_bg_group_blocks(ext2_filsys fs)
return 0;
}
static int bitmap_tail_verify(unsigned char *bitmap, int first, int last)
{
int i;
for (i = first; i <= last; i++)
if (bitmap[i] != 0xff)
return 0;
return 1;
}
static errcode_t read_bitmaps(ext2_filsys fs, int do_inode, int do_block)
{
dgrp_t i;
@ -203,6 +213,7 @@ static errcode_t read_bitmaps(ext2_filsys fs, int do_inode, int do_block)
errcode_t retval;
int block_nbytes = EXT2_CLUSTERS_PER_GROUP(fs->super) / 8;
int inode_nbytes = EXT2_INODES_PER_GROUP(fs->super) / 8;
int tail_flags = 0;
int csum_flag;
unsigned int cnt;
blk64_t blk;
@ -295,9 +306,10 @@ static errcode_t read_bitmaps(ext2_filsys fs, int do_inode, int do_block)
for (i = 0; i < fs->group_desc_count; i++) {
if (block_bitmap) {
blk = ext2fs_block_bitmap_loc(fs, i);
if (csum_flag &&
ext2fs_bg_flags_test(fs, i, EXT2_BG_BLOCK_UNINIT) &&
ext2fs_group_desc_csum_verify(fs, i))
if ((csum_flag &&
ext2fs_bg_flags_test(fs, i, EXT2_BG_BLOCK_UNINIT) &&
ext2fs_group_desc_csum_verify(fs, i)) ||
(blk >= ext2fs_blocks_count(fs->super)))
blk = 0;
if (blk) {
retval = io_channel_read_blk64(fs->io, blk,
@ -315,6 +327,9 @@ static errcode_t read_bitmaps(ext2_filsys fs, int do_inode, int do_block)
EXT2_ET_BLOCK_BITMAP_CSUM_INVALID;
goto cleanup;
}
if (!bitmap_tail_verify((unsigned char *) block_bitmap,
block_nbytes, fs->blocksize - 1))
tail_flags |= EXT2_FLAG_BBITMAP_TAIL_PROBLEM;
} else
memset(block_bitmap, 0, block_nbytes);
cnt = block_nbytes << 3;
@ -322,13 +337,14 @@ static errcode_t read_bitmaps(ext2_filsys fs, int do_inode, int do_block)
blk_itr, cnt, block_bitmap);
if (retval)
goto cleanup;
blk_itr += (blk64_t)block_nbytes << 3;
blk_itr += block_nbytes << 3;
}
if (inode_bitmap) {
blk = ext2fs_inode_bitmap_loc(fs, i);
if (csum_flag &&
ext2fs_bg_flags_test(fs, i, EXT2_BG_INODE_UNINIT) &&
ext2fs_group_desc_csum_verify(fs, i))
if ((csum_flag &&
ext2fs_bg_flags_test(fs, i, EXT2_BG_INODE_UNINIT) &&
ext2fs_group_desc_csum_verify(fs, i)) ||
(blk >= ext2fs_blocks_count(fs->super)))
blk = 0;
if (blk) {
retval = io_channel_read_blk64(fs->io, blk,
@ -347,6 +363,9 @@ static errcode_t read_bitmaps(ext2_filsys fs, int do_inode, int do_block)
EXT2_ET_INODE_BITMAP_CSUM_INVALID;
goto cleanup;
}
if (!bitmap_tail_verify((unsigned char *) inode_bitmap,
inode_nbytes, fs->blocksize - 1))
tail_flags |= EXT2_FLAG_IBITMAP_TAIL_PROBLEM;
} else
memset(inode_bitmap, 0, inode_nbytes);
cnt = inode_nbytes << 3;
@ -366,19 +385,24 @@ static errcode_t read_bitmaps(ext2_filsys fs, int do_inode, int do_block)
}
success_cleanup:
if (inode_bitmap)
if (inode_bitmap) {
ext2fs_free_mem(&inode_bitmap);
if (block_bitmap)
fs->flags &= ~EXT2_FLAG_IBITMAP_TAIL_PROBLEM;
}
if (block_bitmap) {
ext2fs_free_mem(&block_bitmap);
fs->flags &= ~EXT2_FLAG_BBITMAP_TAIL_PROBLEM;
}
fs->flags |= tail_flags;
return 0;
cleanup:
if (do_block) {
ext2fs_free_mem(&fs->block_map);
ext2fs_free_block_bitmap(fs->block_map);
fs->block_map = 0;
}
if (do_inode) {
ext2fs_free_mem(&fs->inode_map);
ext2fs_free_inode_bitmap(fs->inode_map);
fs->inode_map = 0;
}
if (inode_bitmap)

22
src/ext2fs/symlink.c
View File

@ -54,6 +54,7 @@ errcode_t ext2fs_symlink(ext2_filsys fs, ext2_ino_t parent, ext2_ino_t ino,
int fastlink, inlinelink;
unsigned int target_len;
char *block_buf = 0;
int drop_refcount = 0;
EXT2_CHECK_MAGIC(fs, EXT2_ET_MAGIC_EXT2FS_FILSYS);
@ -162,6 +163,14 @@ need_block:
goto cleanup;
}
/*
* Update accounting....
*/
if (!fastlink && !inlinelink)
ext2fs_block_alloc_stats2(fs, blk, +1);
ext2fs_inode_alloc_stats2(fs, ino, +1, 0);
drop_refcount = 1;
/*
* Link the symlink into the filesystem hierarchy
*/
@ -178,17 +187,16 @@ need_block:
if (retval)
goto cleanup;
}
/*
* Update accounting....
*/
if (!fastlink && !inlinelink)
ext2fs_block_alloc_stats2(fs, blk, +1);
ext2fs_inode_alloc_stats2(fs, ino, +1, 0);
drop_refcount = 0;
cleanup:
if (block_buf)
ext2fs_free_mem(&block_buf);
if (drop_refcount) {
if (!fastlink && !inlinelink)
ext2fs_block_alloc_stats2(fs, blk, -1);
ext2fs_inode_alloc_stats2(fs, ino, -1, 0);
}
return retval;
}

8
src/format_ext.c
View File

@ -39,7 +39,7 @@
#include "ext2fs/ext2fs.h"
extern const char* FileSystemLabel[FS_MAX];
extern io_manager nt_io_manager(void);
extern io_manager nt_io_manager;
extern DWORD ext2_last_winerror(DWORD default_error);
static float ext2_percent_start = 0.0f, ext2_percent_share = 0.5f;
const float ext2_max_marker = 80.0f;
@ -172,6 +172,8 @@ const char* error_message(errcode_t error_code)
case EXT2_ET_INODE_CORRUPTED:
case EXT2_ET_EA_INODE_CORRUPTED:
return "Inode is corrupted";
case EXT2_ET_NO_GDESC:
return "Group descriptors not loaded";
default:
if ((error_code > EXT2_ET_BASE) && error_code < (EXT2_ET_BASE + 1000)) {
static_sprintf(error_string, "Unknown ext2fs error %ld (EXT2_ET_BASE + %ld)", error_code, error_code - EXT2_ET_BASE);
@ -202,7 +204,7 @@ const char* GetExtFsLabel(DWORD DriveIndex, uint64_t PartitionOffset)
static char label[EXT2_LABEL_LEN + 1];
errcode_t r;
ext2_filsys ext2fs = NULL;
io_manager manager = nt_io_manager();
io_manager manager = nt_io_manager;
char* volume_name = GetExtPartitionName(DriveIndex, PartitionOffset);
if (volume_name == NULL)
@ -238,7 +240,7 @@ BOOL FormatExtFs(DWORD DriveIndex, uint64_t PartitionOffset, DWORD BlockSize, LP
char* volume_name = NULL;
int i, count;
struct ext2_super_block features = { 0 };
io_manager manager = nt_io_manager();
io_manager manager = nt_io_manager;
blk_t journal_size;
blk64_t size = 0, cur;
ext2_filsys ext2fs = NULL;

10
src/rufus.rc
View File

@ -35,7 +35,7 @@ LANGUAGE LANG_NEUTRAL, SUBLANG_NEUTRAL
IDD_DIALOG DIALOGEX 12, 12, 232, 326
STYLE DS_SETFONT | DS_MODALFRAME | DS_CENTER | WS_MINIMIZEBOX | WS_POPUP | WS_CAPTION | WS_SYSMENU
EXSTYLE WS_EX_ACCEPTFILES
CAPTION "Rufus 3.14.1732"
CAPTION "Rufus 3.14.1733"
FONT 9, "Segoe UI Symbol", 400, 0, 0x0
BEGIN
LTEXT "Drive Properties",IDS_DRIVE_PROPERTIES_TXT,8,6,53,12,NOT WS_GROUP
@ -397,8 +397,8 @@ END
//
VS_VERSION_INFO VERSIONINFO
FILEVERSION 3,14,1732,0
PRODUCTVERSION 3,14,1732,0
FILEVERSION 3,14,1733,0
PRODUCTVERSION 3,14,1733,0
FILEFLAGSMASK 0x3fL
#ifdef _DEBUG
FILEFLAGS 0x1L
@ -416,13 +416,13 @@ BEGIN
VALUE "Comments", "https://rufus.ie"
VALUE "CompanyName", "Akeo Consulting"
VALUE "FileDescription", "Rufus"
VALUE "FileVersion", "3.14.1732"
VALUE "FileVersion", "3.14.1733"
VALUE "InternalName", "Rufus"
VALUE "LegalCopyright", "© 2011-2021 Pete Batard (GPL v3)"
VALUE "LegalTrademarks", "https://www.gnu.org/licenses/gpl-3.0.html"
VALUE "OriginalFilename", "rufus-3.14.exe"
VALUE "ProductName", "Rufus"
VALUE "ProductVersion", "3.14.1732"
VALUE "ProductVersion", "3.14.1733"
END
END
BLOCK "VarFileInfo"