uint8_t setup_File_System() //sets up the basic Tables like FAT,MAT
{
//unsigned int i;
uint8_t status=0x00;
/*root=&root_fat;
setup_FAT();
for(i=0;i<files;i++)
mat[i]= root_mat+i;
setup_MAT();
*/
if(!fs_mount_chip())
if(check_filesystem())
status=0xff;
return_set=setup_fat_mat();
return status; //return 0xff on successfully setting up file system
}
/* Find out if 'device' contains a filesystem. If it does, add
* another entry in g->fses.
*/
int
guestfs_int_check_for_filesystem_on (guestfs_h *g, const char *mountable)
{
CLEANUP_FREE char *vfs_type = NULL;
int is_swap, r;
struct inspect_fs *fs;
CLEANUP_FREE_INTERNAL_MOUNTABLE struct guestfs_internal_mountable *m = NULL;
int whole_device = 0;
/* Get vfs-type in order to check if it's a Linux(?) swap device.
* If there's an error we should ignore it, so to do that we have to
* temporarily replace the error handler with a null one.
*/
guestfs_push_error_handler (g, NULL, NULL);
vfs_type = guestfs_vfs_type (g, mountable);
guestfs_pop_error_handler (g);
is_swap = vfs_type && STREQ (vfs_type, "swap");
debug (g, "check_for_filesystem_on: %s (%s)",
mountable, vfs_type ? vfs_type : "failed to get vfs type");
if (is_swap) {
extend_fses (g);
fs = &g->fses[g->nr_fses-1];
fs->mountable = safe_strdup (g, mountable);
return 0;
}
m = guestfs_internal_parse_mountable (g, mountable);
if (m == NULL)
return -1;
/* If it's a whole device, see if it is an install ISO. */
if (m->im_type == MOUNTABLE_DEVICE) {
whole_device = guestfs_is_whole_device (g, m->im_device);
if (whole_device == -1) {
return -1;
}
}
if (whole_device) {
extend_fses (g);
fs = &g->fses[g->nr_fses-1];
r = guestfs_int_check_installer_iso (g, fs, m->im_device);
if (r == -1) { /* Fatal error. */
g->nr_fses--;
return -1;
}
if (r > 0) /* Found something. */
return 0;
/* Didn't find anything. Fall through ... */
g->nr_fses--;
}
/* Try mounting the device. As above, ignore errors. */
guestfs_push_error_handler (g, NULL, NULL);
if (vfs_type && STREQ (vfs_type, "ufs")) { /* Hack for the *BSDs. */
/* FreeBSD fs is a variant of ufs called ufs2 ... */
r = guestfs_mount_vfs (g, "ro,ufstype=ufs2", "ufs", mountable, "/");
if (r == -1)
/* while NetBSD and OpenBSD use another variant labeled 44bsd */
r = guestfs_mount_vfs (g, "ro,ufstype=44bsd", "ufs", mountable, "/");
} else {
r = guestfs_mount_ro (g, mountable, "/");
}
guestfs_pop_error_handler (g);
if (r == -1)
return 0;
/* Do the rest of the checks. */
r = check_filesystem (g, mountable, m, whole_device);
/* Unmount the filesystem. */
if (guestfs_umount_all (g) == -1)
return -1;
return r;
}
int main(int argc, char *argv[])
{
int c,force = 0;
TDB_CONTEXT *tdb;
TDB_DATA key, data;
io_channel channel;
errcode_t retval;
int mount_flags;
blk64_t blk_num;
char *device_name, *tdb_file;
io_manager manager = unix_io_manager;
#ifdef ENABLE_NLS
setlocale(LC_MESSAGES, "");
setlocale(LC_CTYPE, "");
bindtextdomain(NLS_CAT_NAME, LOCALEDIR);
textdomain(NLS_CAT_NAME);
#endif
add_error_table(&et_ext2_error_table);
prg_name = argv[0];
while((c = getopt(argc, argv, "f")) != EOF) {
switch (c) {
case 'f':
force = 1;
break;
default:
usage(prg_name);
}
}
if (argc != optind+2)
usage(prg_name);
tdb_file = argv[optind];
device_name = argv[optind+1];
tdb = tdb_open(tdb_file, 0, 0, O_RDONLY, 0600);
if (!tdb) {
com_err(prg_name, errno,
_("Failed tdb_open %s\n"), tdb_file);
exit(1);
}
retval = ext2fs_check_if_mounted(device_name, &mount_flags);
if (retval) {
com_err(prg_name, retval, _("Error while determining whether "
"%s is mounted.\n"), device_name);
exit(1);
}
if (mount_flags & EXT2_MF_MOUNTED) {
com_err(prg_name, retval, _("e2undo should only be run on "
"unmounted file system\n"));
exit(1);
}
retval = manager->open(device_name,
IO_FLAG_EXCLUSIVE | IO_FLAG_RW, &channel);
if (retval) {
com_err(prg_name, retval,
_("Failed to open %s\n"), device_name);
exit(1);
}
if (!force && check_filesystem(tdb, channel)) {
exit(1);
}
if (set_blk_size(tdb, channel)) {
exit(1);
}
for (key = tdb_firstkey(tdb); key.dptr; key = tdb_nextkey(tdb, key)) {
if (!strcmp((char *) key.dptr, (char *) mtime_key) ||
!strcmp((char *) key.dptr, (char *) uuid_key) ||
!strcmp((char *) key.dptr, (char *) blksize_key)) {
continue;
}
data = tdb_fetch(tdb, key);
if (!data.dptr) {
com_err(prg_name, 0,
_("Failed tdb_fetch %s\n"), tdb_errorstr(tdb));
exit(1);
}
blk_num = *(unsigned long *)key.dptr;
printf(_("Replayed transaction of size %zd at location %llu\n"),
data.dsize, blk_num);
retval = io_channel_write_blk64(channel, blk_num,
-data.dsize, data.dptr);
if (retval == -1) {
com_err(prg_name, retval,
_("Failed write %s\n"),
strerror(errno));
exit(1);
}
}
io_channel_close(channel);
tdb_close(tdb);
return 0;
}
int main(int argc, char *argv[])
{
int c, force = 0, dry_run = 0, verbose = 0, dump = 0;
io_channel channel;
errcode_t retval;
int mount_flags, csum_error = 0, io_error = 0;
size_t i, keys_per_block;
char *device_name, *tdb_file;
io_manager manager = unix_io_manager;
struct undo_context undo_ctx;
char *buf;
struct undo_key_block *keyb;
struct undo_key *dkey;
struct undo_key_info *ikey;
__u32 key_crc, blk_crc, hdr_crc;
blk64_t lblk;
ext2_filsys fs;
__u64 offset = 0;
char opt_offset_string[40] = { 0 };
#ifdef ENABLE_NLS
setlocale(LC_MESSAGES, "");
setlocale(LC_CTYPE, "");
bindtextdomain(NLS_CAT_NAME, LOCALEDIR);
textdomain(NLS_CAT_NAME);
set_com_err_gettext(gettext);
#endif
add_error_table(&et_ext2_error_table);
prg_name = argv[0];
while ((c = getopt(argc, argv, "fhno:vz:")) != EOF) {
switch (c) {
case 'f':
force = 1;
break;
case 'h':
dump = 1;
break;
case 'n':
dry_run = 1;
break;
case 'o':
offset = strtoull(optarg, &buf, 0);
if (*buf) {
com_err(prg_name, 0,
_("illegal offset - %s"), optarg);
exit(1);
}
/* used to indicate that an offset was specified */
opt_offset_string[0] = 1;
break;
case 'v':
verbose = 1;
break;
case 'z':
undo_file = optarg;
break;
default:
usage();
}
}
if (argc != optind + 2)
usage();
tdb_file = argv[optind];
device_name = argv[optind+1];
if (undo_file && strcmp(tdb_file, undo_file) == 0) {
printf(_("Will not write to an undo file while replaying it.\n"));
exit(1);
}
/* Interpret the undo file */
retval = manager->open(tdb_file, IO_FLAG_EXCLUSIVE,
&undo_ctx.undo_file);
if (retval) {
com_err(prg_name, errno,
_("while opening undo file `%s'\n"), tdb_file);
exit(1);
}
retval = io_channel_read_blk64(undo_ctx.undo_file, 0,
-(int)sizeof(undo_ctx.hdr),
&undo_ctx.hdr);
if (retval) {
com_err(prg_name, retval, _("while reading undo file"));
exit(1);
}
if (memcmp(undo_ctx.hdr.magic, E2UNDO_MAGIC,
sizeof(undo_ctx.hdr.magic))) {
fprintf(stderr, _("%s: Not an undo file.\n"), tdb_file);
exit(1);
}
if (dump) {
dump_header(&undo_ctx.hdr);
exit(1);
}
hdr_crc = ext2fs_crc32c_le(~0, (unsigned char *)&undo_ctx.hdr,
sizeof(struct undo_header) -
sizeof(__u32));
if (!force && ext2fs_le32_to_cpu(undo_ctx.hdr.header_crc) != hdr_crc) {
fprintf(stderr, _("%s: Header checksum doesn't match.\n"),
tdb_file);
exit(1);
}
undo_ctx.blocksize = ext2fs_le32_to_cpu(undo_ctx.hdr.block_size);
undo_ctx.fs_blocksize = ext2fs_le32_to_cpu(undo_ctx.hdr.fs_block_size);
if (undo_ctx.blocksize == 0 || undo_ctx.fs_blocksize == 0) {
fprintf(stderr, _("%s: Corrupt undo file header.\n"), tdb_file);
exit(1);
}
if (!force && undo_ctx.blocksize > E2UNDO_MAX_BLOCK_SIZE) {
fprintf(stderr, _("%s: Undo block size too large.\n"),
tdb_file);
exit(1);
}
if (!force && undo_ctx.blocksize < E2UNDO_MIN_BLOCK_SIZE) {
fprintf(stderr, _("%s: Undo block size too small.\n"),
tdb_file);
exit(1);
}
undo_ctx.super_block = ext2fs_le64_to_cpu(undo_ctx.hdr.super_offset);
undo_ctx.num_keys = ext2fs_le64_to_cpu(undo_ctx.hdr.num_keys);
io_channel_set_blksize(undo_ctx.undo_file, undo_ctx.blocksize);
/*
* Do not compare undo_ctx.hdr.f_compat with the available compatible
* features set, because a "missing" compatible feature should
* not cause any problems.
*/
if (!force && (undo_ctx.hdr.f_incompat || undo_ctx.hdr.f_rocompat)) {
fprintf(stderr, _("%s: Unknown undo file feature set.\n"),
tdb_file);
exit(1);
}
/* open the fs */
retval = ext2fs_check_if_mounted(device_name, &mount_flags);
if (retval) {
com_err(prg_name, retval, _("Error while determining whether "
"%s is mounted."), device_name);
exit(1);
}
if (mount_flags & EXT2_MF_MOUNTED) {
com_err(prg_name, retval, "%s", _("e2undo should only be run "
"on unmounted filesystems"));
exit(1);
}
if (undo_file) {
retval = e2undo_setup_tdb(device_name, &manager);
if (retval)
exit(1);
}
retval = manager->open(device_name,
IO_FLAG_EXCLUSIVE | (dry_run ? 0 : IO_FLAG_RW),
&channel);
if (retval) {
com_err(prg_name, retval,
_("while opening `%s'"), device_name);
exit(1);
}
if (*opt_offset_string || e2undo_has_feature_fs_offset(&undo_ctx.hdr)) {
if (!*opt_offset_string)
offset = ext2fs_le64_to_cpu(undo_ctx.hdr.fs_offset);
retval = snprintf(opt_offset_string, sizeof(opt_offset_string),
"offset=%llu", offset);
if ((size_t) retval >= sizeof(opt_offset_string)) {
/* should not happen... */
com_err(prg_name, 0, _("specified offset is too large"));
exit(1);
}
io_channel_set_options(channel, opt_offset_string);
}
if (!force && check_filesystem(&undo_ctx, channel))
exit(1);
/* prepare to read keys */
retval = ext2fs_get_mem(sizeof(struct undo_key_info) * undo_ctx.num_keys,
&undo_ctx.keys);
if (retval) {
com_err(prg_name, retval, "%s", _("while allocating memory"));
exit(1);
}
ikey = undo_ctx.keys;
retval = ext2fs_get_mem(undo_ctx.blocksize, &keyb);
if (retval) {
com_err(prg_name, retval, "%s", _("while allocating memory"));
exit(1);
}
retval = ext2fs_get_mem(E2UNDO_MAX_EXTENT_BLOCKS * undo_ctx.blocksize,
&buf);
if (retval) {
com_err(prg_name, retval, "%s", _("while allocating memory"));
exit(1);
}
/* load keys */
keys_per_block = KEYS_PER_BLOCK(&undo_ctx);
lblk = ext2fs_le64_to_cpu(undo_ctx.hdr.key_offset);
dbg_printf("nr_keys=%lu, kpb=%zu, blksz=%u\n",
undo_ctx.num_keys, keys_per_block, undo_ctx.blocksize);
for (i = 0; i < undo_ctx.num_keys; i += keys_per_block) {
size_t j, max_j;
__le32 crc;
retval = io_channel_read_blk64(undo_ctx.undo_file,
lblk, 1, keyb);
if (retval) {
com_err(prg_name, retval, "%s", _("while reading keys"));
if (force) {
io_error = 1;
undo_ctx.num_keys = i - 1;
break;
}
exit(1);
}
/* check keys */
if (!force &&
ext2fs_le32_to_cpu(keyb->magic) != KEYBLOCK_MAGIC) {
fprintf(stderr, _("%s: wrong key magic at %llu\n"),
tdb_file, lblk);
exit(1);
}
crc = keyb->crc;
keyb->crc = 0;
key_crc = ext2fs_crc32c_le(~0, (unsigned char *)keyb,
undo_ctx.blocksize);
if (!force && ext2fs_le32_to_cpu(crc) != key_crc) {
fprintf(stderr,
_("%s: key block checksum error at %llu.\n"),
tdb_file, lblk);
exit(1);
}
/* load keys from key block */
lblk++;
max_j = undo_ctx.num_keys - i;
if (max_j > keys_per_block)
max_j = keys_per_block;
for (j = 0, dkey = keyb->keys;
j < max_j;
j++, ikey++, dkey++) {
ikey->fsblk = ext2fs_le64_to_cpu(dkey->fsblk);
ikey->fileblk = lblk;
ikey->blk_crc = ext2fs_le32_to_cpu(dkey->blk_crc);
ikey->size = ext2fs_le32_to_cpu(dkey->size);
lblk += (ikey->size + undo_ctx.blocksize - 1) /
undo_ctx.blocksize;
if (E2UNDO_MAX_EXTENT_BLOCKS * undo_ctx.blocksize <
ikey->size) {
com_err(prg_name, retval,
_("%s: block %llu is too long."),
tdb_file, ikey->fsblk);
exit(1);
}
/* check each block's crc */
retval = io_channel_read_blk64(undo_ctx.undo_file,
ikey->fileblk,
-(int)ikey->size,
buf);
if (retval) {
com_err(prg_name, retval,
_("while fetching block %llu."),
ikey->fileblk);
if (!force)
exit(1);
io_error = 1;
continue;
}
blk_crc = ext2fs_crc32c_le(~0, (unsigned char *)buf,
ikey->size);
if (blk_crc != ikey->blk_crc) {
fprintf(stderr,
_("checksum error in filesystem block "
"%llu (undo blk %llu)\n"),
ikey->fsblk, ikey->fileblk);
if (!force)
exit(1);
csum_error = 1;
}
}
}
ext2fs_free_mem(&keyb);
/* sort keys in fs block order */
qsort(undo_ctx.keys, undo_ctx.num_keys, sizeof(struct undo_key_info),
key_compare);
/* replay */
io_channel_set_blksize(channel, undo_ctx.fs_blocksize);
for (i = 0, ikey = undo_ctx.keys; i < undo_ctx.num_keys; i++, ikey++) {
retval = io_channel_read_blk64(undo_ctx.undo_file,
ikey->fileblk,
-(int)ikey->size,
buf);
if (retval) {
com_err(prg_name, retval,
_("while fetching block %llu."),
ikey->fileblk);
io_error = 1;
continue;
}
if (verbose)
printf("Replayed block of size %u from %llu to %llu\n",
ikey->size, ikey->fileblk, ikey->fsblk);
if (dry_run)
continue;
retval = io_channel_write_blk64(channel, ikey->fsblk,
-(int)ikey->size, buf);
if (retval) {
com_err(prg_name, retval,
_("while writing block %llu."), ikey->fsblk);
io_error = 1;
}
}
if (csum_error)
fprintf(stderr, _("Undo file corruption; run e2fsck NOW!\n"));
if (io_error)
fprintf(stderr, _("IO error during replay; run e2fsck NOW!\n"));
if (!(ext2fs_le32_to_cpu(undo_ctx.hdr.state) & E2UNDO_STATE_FINISHED)) {
force = 1;
fprintf(stderr, _("Incomplete undo record; run e2fsck.\n"));
}
ext2fs_free_mem(&buf);
ext2fs_free_mem(&undo_ctx.keys);
io_channel_close(channel);
/* If there were problems, try to force a fsck */
if (!dry_run && (force || csum_error || io_error)) {
retval = ext2fs_open2(device_name, NULL,
EXT2_FLAG_RW | EXT2_FLAG_64BITS, 0, 0,
manager, &fs);
if (retval)
goto out;
fs->super->s_state &= ~EXT2_VALID_FS;
if (csum_error || io_error)
fs->super->s_state |= EXT2_ERROR_FS;
ext2fs_mark_super_dirty(fs);
ext2fs_close_free(&fs);
}
out:
io_channel_close(undo_ctx.undo_file);
return csum_error;
}