Imported reiserfsprogs-3.6.2
This commit is contained in:
Jeff Mahoney committed
1 parent
e7102bdb66
commit
b69459eb80
86 files changed
+23136
-13423
No files matched your search
@@ -0,0 +1,238 @@
|
||||
/*
|
||||
* Copyright 2000-2002 by Hans Reiser, licensing governed by reiserfs/README
|
||||
*/
|
||||
|
||||
#include "debugreiserfs.h"
|
||||
|
||||
|
||||
#if 0
|
||||
|
||||
/* this reads stdin and recover file of given key: */
|
||||
/* the input has to be in the follwong format:
|
||||
K dirid objectid
|
||||
N name
|
||||
B blocknumber
|
||||
..
|
||||
then recover_file will read every block, look there specified file and put it into
|
||||
*/
|
||||
void do_recover (reiserfs_filsys_t fs)
|
||||
{
|
||||
char name [100];
|
||||
char * line = 0;
|
||||
int n = 0;
|
||||
int fd;
|
||||
struct key key = {0, 0, };
|
||||
struct buffer_head * bh;
|
||||
struct item_head * ih;
|
||||
unsigned long block;
|
||||
char code;
|
||||
loff_t recovered = 0;
|
||||
int i, j;
|
||||
reiserfs_bitmap_t bitmap;
|
||||
int used, not_used;
|
||||
|
||||
bitmap = reiserfs_create_bitmap (SB_BLOCK_COUNT (fs));
|
||||
reiserfs_fetch_disk_bitmap (bitmap, fs);
|
||||
/* we check how many blocks recoverd items point to are free or used */
|
||||
used = 0;
|
||||
not_used = 0;
|
||||
|
||||
fd = 0;
|
||||
while (getline (&line, &n, stdin) != -1) {
|
||||
if (line [0] == '#' || line [0] == '\n')
|
||||
continue;
|
||||
switch (line [0]) {
|
||||
case 'K':
|
||||
/* get a key of file which is to be recovered */
|
||||
if (sscanf (line, "%c %u %u\n", &code, &key.k_dir_id, &key.k_objectid) != 3) {
|
||||
die ("recover_file: wrong input K format");
|
||||
}
|
||||
printf ("Recovering file (%u, %u)\n", key.k_dir_id, key.k_objectid);
|
||||
break;
|
||||
|
||||
case 'N':
|
||||
/* get a file name */
|
||||
recovered = 0;
|
||||
if (sscanf (line, "%c %s\n", &code, name) != 2) {
|
||||
die ("recover_file: wrong input N format");
|
||||
}
|
||||
fd = open (name, O_RDWR | O_CREAT | O_EXCL, 0644);
|
||||
if (fd == -1)
|
||||
die ("recover_file: could not create file %s: %s",
|
||||
name,strerror (errno));
|
||||
printf ("Recovering file %s..\n", name);
|
||||
break;
|
||||
|
||||
case 'B':
|
||||
if (!fd)
|
||||
die ("recover_file: file name is not specified");
|
||||
if (sscanf (line, "%c %lu\n", &code, &block) != 2) {
|
||||
die ("recover_file: wrong input B format");
|
||||
}
|
||||
bh = bread (fs->s_dev, block, fs->s_blocksize);
|
||||
if (!bh) {
|
||||
printf ("reading block %lu failed\n", block);
|
||||
continue;
|
||||
}
|
||||
|
||||
printf ("working with block %lu..\n", block);
|
||||
|
||||
ih = B_N_PITEM_HEAD (bh, 0);
|
||||
for (i = 0; i < node_item_number (bh); i ++, ih ++) {
|
||||
__u32 * indirect;
|
||||
struct buffer_head * tmp_bh;
|
||||
|
||||
if (!is_indirect_ih (ih) || key.k_dir_id != ih->ih_key.k_dir_id ||
|
||||
key.k_objectid != ih->ih_key.k_objectid)
|
||||
continue;
|
||||
|
||||
indirect = (__u32 *)B_I_PITEM (bh, ih);
|
||||
for (j = 0; j < I_UNFM_NUM (ih); j ++) {
|
||||
block = le32_to_cpu (indirect [j]);
|
||||
if (!block)
|
||||
continue;
|
||||
tmp_bh = bread (fs->s_dev, block, fs->s_blocksize);
|
||||
if (!tmp_bh) {
|
||||
printf ("reading block %Lu failed\n", (loff_t)block * fs->s_blocksize);
|
||||
continue;
|
||||
}
|
||||
if (lseek64 (fd, get_offset (&ih->ih_key) + j * fs->s_blocksize - 1,
|
||||
SEEK_SET) == (loff_t)-1) {
|
||||
printf ("llseek failed to pos %Ld\n", (loff_t)block * fs->s_blocksize);
|
||||
brelse (tmp_bh);
|
||||
continue;
|
||||
}
|
||||
if (reiserfs_bitmap_test_bit (bitmap, block))
|
||||
used ++;
|
||||
else
|
||||
not_used ++;
|
||||
/*printf ("block of file %Ld gets block %lu\n",
|
||||
(get_offset (&ih->ih_key) - 1) / fs->s_blocksize + j, block);*/
|
||||
if (write (fd, tmp_bh->b_data, tmp_bh->b_size) != tmp_bh->b_size) {
|
||||
printf ("write failed to pos %Ld\n", (loff_t)block * fs->s_blocksize);
|
||||
brelse (tmp_bh);
|
||||
continue;
|
||||
}
|
||||
recovered += fs->s_blocksize;
|
||||
brelse (tmp_bh);
|
||||
}
|
||||
}
|
||||
brelse (bh);
|
||||
break;
|
||||
}
|
||||
}
|
||||
printf ("recover_file: %Ld bytes recovered of file %s, key %u %u, %d blocks are free and %d are used\n",
|
||||
recovered, name, key.k_dir_id, key.k_objectid, not_used, used);
|
||||
}
|
||||
#endif
|
||||
|
||||
|
||||
|
||||
/* read a file containing map of one or more files and either recover
|
||||
them or just print info */
|
||||
static void read_map (FILE * fp)
|
||||
{
|
||||
int i;
|
||||
__u32 v32;
|
||||
char * buf;
|
||||
__u32 ids [4];
|
||||
int do_recover = 0;
|
||||
|
||||
|
||||
buf = 0;
|
||||
while (1) {
|
||||
if (fread (&v32, sizeof (v32), 1, fp) != 1)
|
||||
break;
|
||||
if (v32 != MAP_MAGIC)
|
||||
reiserfs_panic ("read_map: no magic found");
|
||||
|
||||
/* device name length and name itself */
|
||||
fread (&v32, sizeof (v32), 1, fp);
|
||||
buf = realloc (buf, v32);
|
||||
if (!buf)
|
||||
reiserfs_panic ("realloc failed");
|
||||
fread (buf, v32, 1, fp);
|
||||
reiserfs_warning (stdout, "\"%s\": ", buf);
|
||||
|
||||
/* file name length and name itself*/
|
||||
fread (&v32, sizeof (v32), 1, fp);
|
||||
buf = realloc (buf, v32);
|
||||
if (!buf)
|
||||
reiserfs_panic ("realloc failed");
|
||||
fread (buf, v32, 1, fp);
|
||||
|
||||
/* read directory key and poined object key */
|
||||
fread (ids, sizeof (ids), 1, fp);
|
||||
reiserfs_warning (stdout, "[%K]:\"%s\"-->[%K]\n",
|
||||
&ids[0], buf, &ids[2]);
|
||||
|
||||
/*
|
||||
do_recover = user_confirmed (stdout, "recover? (Y):", "Y\n");
|
||||
if (do_recover)
|
||||
reiserfs_warning (stderr, "recovering not ready\n");
|
||||
*/
|
||||
|
||||
/* how many data blocks are there */
|
||||
fread (&v32, sizeof (v32), 1, fp);
|
||||
if (v32) {
|
||||
buf = realloc (buf, v32 * 4);
|
||||
if (!buf)
|
||||
reiserfs_panic ("realloc failed (%u)", v32);
|
||||
|
||||
/* read list of data block numbers */
|
||||
fread (buf, 4, v32, fp);
|
||||
|
||||
if (!do_recover) {
|
||||
for (i = 0; i < v32; i ++)
|
||||
reiserfs_warning (stdout, "%d ", ((__u32 *)buf)[i]);
|
||||
reiserfs_warning (stdout, "\n");
|
||||
}
|
||||
}
|
||||
|
||||
/* main tail length */
|
||||
fread (&v32, sizeof (v32), 1, fp);
|
||||
if (v32) {
|
||||
/* there is tail */
|
||||
buf = realloc (buf, v32);
|
||||
if (!buf)
|
||||
reiserfs_panic ("realloc failed");
|
||||
fread (buf, v32, 1, fp);
|
||||
if (!do_recover)
|
||||
reiserfs_warning (stdout, "%d bytes long tail\n", v32);
|
||||
} else {
|
||||
if (!do_recover)
|
||||
reiserfs_warning (stdout, "No tail\n");
|
||||
}
|
||||
|
||||
if (fread (&v32, sizeof (v32), 1, fp) != 1)
|
||||
break;
|
||||
if (v32 != MAP_END_MAGIC)
|
||||
reiserfs_panic ("read_map: no magic found");
|
||||
}
|
||||
|
||||
free (buf);
|
||||
}
|
||||
|
||||
|
||||
void do_recover (reiserfs_filsys_t * fs)
|
||||
{
|
||||
FILE * fp;
|
||||
|
||||
if (map_file (fs)) {
|
||||
fp = fopen (map_file (fs), "r");
|
||||
if (fp == 0) {
|
||||
reiserfs_warning (stderr, "do_recover: fopen failed: %m");
|
||||
return;
|
||||
}
|
||||
} else {
|
||||
reiserfs_warning (stderr, "Reading file map from stdin..\n");
|
||||
fflush (stderr);
|
||||
fp = stdin;
|
||||
}
|
||||
|
||||
read_map (fp);
|
||||
|
||||
if (fp != stdin)
|
||||
fclose (fp);
|
||||
|
||||
}
|
||||
Reference in new issue
Block a user