/*
* debugfs.c --- a program which allows you to attach an ext2fs
* filesystem and play with it.
*
* Copyright (C) 1993 Theodore Ts'o. This file may be redistributed
* under the terms of the GNU Public License.
*
* Modifications by Robert Sanders <gt8134b@prism.gatech.edu>
*/
#include <stdio.h>
#include <unistd.h>
#include <stdlib.h>
#include <ctype.h>
#include <string.h>
#include <time.h>
#ifdef HAVE_GETOPT_H
#include <getopt.h>
#else
extern int optind;
extern char *optarg;
#endif
#ifdef HAVE_ERRNO_H
#include <errno.h>
#endif
#include <fcntl.h>
#include <sys/types.h>
#include <sys/stat.h>
#include "et/com_err.h"
#include "ss/ss.h"
#include "debugfs.h"
#include "uuid/uuid.h"
#include "e2p/e2p.h"
#include <ext2fs/ext2_ext_attr.h>
#include "../version.h"
#include "jfs_user.h"
extern ss_request_table debug_cmds;
ss_request_table *extra_cmds;
const char *debug_prog_name;
ext2_filsys current_fs = NULL;
ext2_ino_t root, cwd;
static void open_filesystem(char *device, int open_flags, blk_t superblock,
blk_t blocksize, int catastrophic,
char *data_filename)
{
int retval;
io_channel data_io = 0;
if (superblock != 0 && blocksize == 0) {
com_err(device, 0, "if you specify the superblock, you must also specify the block size");
current_fs = NULL;
return;
}
if (data_filename) {
if ((open_flags & EXT2_FLAG_IMAGE_FILE) == 0) {
com_err(device, 0,
"The -d option is only valid when reading an e2image file");
current_fs = NULL;
return;
}
retval = unix_io_manager->open(data_filename, 0, &data_io);
if (retval) {
com_err(data_filename, 0, "while opening data source");
current_fs = NULL;
return;
}
}
if (catastrophic && (open_flags & EXT2_FLAG_RW)) {
com_err(device, 0,
"opening read-only because of catastrophic mode");
open_flags &= ~EXT2_FLAG_RW;
}
retval = ext2fs_open(device, open_flags, superblock, blocksize,
unix_io_manager, ¤t_fs);
if (retval) {
com_err(device, retval, "while opening filesystem");
current_fs = NULL;
return;
}
if (catastrophic)
com_err(device, 0, "catastrophic mode - not reading inode or group bitmaps");
else {
retval = ext2fs_read_inode_bitmap(current_fs);
if (retval) {
com_err(device, retval, "while reading inode bitmap");
goto errout;
}
retval = ext2fs_read_block_bitmap(current_fs);
if (retval) {
com_err(device, retval, "while reading block bitmap");
goto errout;
}
}
if (data_io) {
retval = ext2fs_set_data_io(current_fs, data_io);
if (retval) {
com_err(device, retval,
"while setting data source");
goto errout;
}
}
root = cwd = EXT2_ROOT_INO;
return;
errout:
retval = ext2fs_close(current_fs);
if (retval)
com_err(device, retval, "while trying to close filesystem");
current_fs = NULL;
}
void do_open_filesys(int argc, char **argv)
{
int c, err;
int catastrophic = 0;
blk_t superblock = 0;
blk_t blocksize = 0;
int open_flags = EXT2_FLAG_SOFTSUPP_FEATURES;
char *data_filename = 0;
reset_getopt();
while ((c = getopt (argc, argv, "iwfecb:s:d:")) != EOF) {
switch (c) {
case 'i':
open_flags |= EXT2_FLAG_IMAGE_FILE;
break;
case 'w':
open_flags |= EXT2_FLAG_RW;
break;
case 'f':
open_flags |= EXT2_FLAG_FORCE;
break;
case 'e':
open_flags |= EXT2_FLAG_EXCLUSIVE;
break;
case 'c':
catastrophic = 1;
break;
case 'd':
data_filename = optarg;
break;
case 'b':
blocksize = parse_ulong(optarg, argv[0],
"block size", &err);
if (err)
return;
break;
case 's':
superblock = parse_ulong(optarg, argv[0],
"superblock number", &err);
if (err)
return;
break;
default:
goto print_usage;
}
}
if (optind != argc-1) {
goto print_usage;
}
if (check_fs_not_open(argv[0]))
return;
open_filesystem(argv[optind], open_flags,
superblock, blocksize, catastrophic,
data_filename);
return;
print_usage:
fprintf(stderr, "%s: Usage: open [-s superblock] [-b blocksize] "
"[-c] [-w] <device>\n", argv[0]);
}
void do_lcd(int argc, char **argv)
{
if (argc != 2) {
com_err(argv[0], 0, "Usage: %s %s", argv[0], "<native dir>");
return;
}
if (chdir(argv[1]) == -1) {
com_err(argv[0], errno,
"while trying to change native directory to %s",
argv[1]);
return;
}
}
static void close_filesystem(NOARGS)
{
int retval;
if (current_fs->flags & EXT2_FLAG_IB_DIRTY) {
retval = ext2fs_write_inode_bitmap(current_fs);
if (retval)
com_err("ext2fs_write_inode_bitmap", retval, 0);
}
if (current_fs->flags & EXT2_FLAG_BB_DIRTY) {
retval = ext2fs_write_block_bitmap(current_fs);
if (retval)
com_err("ext2fs_write_block_bitmap", retval, 0);
}
retval = ext2fs_close(current_fs);
if (retval)
com_err("ext2fs_close", retval, 0);
current_fs = NULL;
return;
}
void do_close_filesys(int argc, char **argv)
{
int c;
if (check_fs_open(argv[0]))
return;
reset_getopt();
while ((c = getopt (argc, argv, "a")) != EOF) {
switch (c) {
case 'a':
current_fs->flags &= ~EXT2_FLAG_MASTER_SB_ONLY;
break;
default:
goto print_usage;
}
}
if (argc > optind) {
print_usage:
com_err(0, 0, "Usage: close_filesys [-a]");
return;
}
close_filesystem();
}
void do_init_filesys(int argc, char **argv)
{
struct ext2_super_block param;
errcode_t retval;
int err;
if (common_args_process(argc, argv, 3, 3, "initialize",
"<device> <blocksize>", CHECK_FS_NOTOPEN))
return;
memset(¶m, 0, sizeof(struct ext2_super_block));
param.s_blocks_count = parse_ulong(argv[2], argv[0],
"blocks count", &err);
if (err)
return;
retval = ext2fs_initialize(argv[1], 0, ¶m,
unix_io_manager, ¤t_fs);
if (retval) {
com_err(argv[1], retval, "while initializing filesystem");
current_fs = NULL;
return;
}
root = cwd = EXT2_ROOT_INO;
return;
}
static void print_features(struct ext2_super_block * s, FILE *f)
{
int i, j, printed=0;
__u32 *mask = &s->s_feature_compat, m;
fputs("Filesystem features:", f);
for (i=0; i <3; i++,mask++) {
for (j=0,m=1; j < 32; j++, m<<=1) {
if (*mask & m) {
fprintf(f, " %s", e2p_feature2string(i, m));
printed++;
}
}
}
if (printed == 0)
fputs("(none)", f);
fputs("\n", f);
}
static void print_bg_opts(struct ext2_group_desc *gdp, int mask,
const char *str, int *first, FILE *f)
{
if (gdp->bg_flags & mask) {
if (*first) {
fputs(" [", f);
*first = 0;
} else
fputs(", ", f);
fputs(str, f);
}
}
void do_show_super_stats(int argc, char *argv[])
{
dgrp_t i;
FILE *out;
struct ext2_group_desc *gdp;
int c, header_only = 0;
int numdirs = 0, first, gdt_csum;
reset_getopt();
while ((c = getopt (argc, argv, "h")) != EOF) {
switch (c) {
case 'h':
header_only++;
break;
default:
goto print_usage;
}
}
if (optind != argc) {
goto print_usage;
}
if (check_fs_open(argv[0]))
return;
out = open_pager();
list_super2(current_fs->super, out);
for (i=0; i < current_fs->group_desc_count; i++)
numdirs += current_fs->group_desc[i].bg_used_dirs_count;
fprintf(out, "Directories: %d\n", numdirs);
if (header_only) {
close_pager(out);
return;
}
gdt_csum = EXT2_HAS_RO_COMPAT_FEATURE(current_fs->super,
EXT4_FEATURE_RO_COMPAT_GDT_CSUM);
gdp = ¤t_fs->group_desc[0];
for (i = 0; i < current_fs->group_desc_count; i++, gdp++) {
fprintf(out, " Group %2d: block bitmap at %u, "
"inode bitmap at %u, "
"inode table at %u\n"
" %d free %s, "
"%d free %s, "
"%d used %s%s",
i, gdp->bg_block_bitmap,
gdp->bg_inode_bitmap, gdp->bg_inode_table,
gdp->bg_free_blocks_count,
gdp->bg_free_blocks_count != 1 ? "blocks" : "block",
gdp->bg_free_inodes_count,
gdp->bg_free_inodes_count != 1 ? "inodes" : "inode",
gdp->bg_used_dirs_count,
gdp->bg_used_dirs_count != 1 ? "directories"
: "directory", gdt_csum ? ", " : "\n");
if (gdt_csum)
fprintf(out, "%d unused %s\n",
gdp->bg_itable_unused,
gdp->bg_itable_unused != 1 ? "inodes":"inode");
first = 1;
print_bg_opts(gdp, EXT2_BG_INODE_UNINIT, "Inode not init",
&first, out);
print_bg_opts(gdp, EXT2_BG_BLOCK_UNINIT, "Block not init",
&first, out);
if (gdt_csum) {
fprintf(out, "%sChecksum 0x%04x",
first ? " [":", ", gdp->bg_checksum);
first = 0;
}
if (!first)
fputs("]\n", out);
}
close_pager(out);
return;
print_usage:
fprintf(stderr, "%s: Usage: show_super [-h]\n", argv[0]);
}
void do_dirty_filesys(int argc EXT2FS_ATTR((unused)),
char **argv EXT2FS_ATTR((unused)))
{
if (check_fs_open(argv[0]))
return;
if (check_fs_read_write(argv[0]))
return;
if (argv[1] && !strcmp(argv[1], "-clean"))
current_fs->super->s_state |= EXT2_VALID_FS;
else
current_fs->super->s_state &= ~EXT2_VALID_FS;
ext2fs_mark_super_dirty(current_fs);
}
struct list_blocks_struct {
FILE *f;
e2_blkcnt_t total;
blk_t first_block, last_block;
e2_blkcnt_t first_bcnt, last_bcnt;
e2_blkcnt_t first;
};
static void finish_range(struct list_blocks_struct *lb)
{
if (lb->first_block == 0)
return;
if (lb->first)
lb->first = 0;
else
fprintf(lb->f, ", ");
if (lb->first_block == lb->last_block)
fprintf(lb->f, "(%lld):%u",
(long long)lb->first_bcnt, lb->first_block);
else
fprintf(lb->f, "(%lld-%lld):%u-%u",
(long long)lb->first_bcnt, (long long)lb->last_bcnt,
lb->first_block, lb->last_block);
lb->first_block = 0;
}
static int list_blocks_proc(ext2_filsys fs EXT2FS_ATTR((unused)),
blk_t *blocknr, e2_blkcnt_t blockcnt,
blk_t ref_block EXT2FS_ATTR((unused)),
int ref_offset EXT2FS_ATTR((unused)),
void *private)
{
struct list_blocks_struct *lb = (struct list_blocks_struct *) private;
lb->total++;
if (blockcnt >= 0) {
/*
* See if we can add on to the existing range (if it exists)
*/
if (lb->first_block &&
(lb->last_block+1 == *blocknr) &&
(lb->last_bcnt+1 == blockcnt)) {
lb->last_block = *blocknr;
lb->last_bcnt = blockcnt;
return 0;
}
/*
* Start a new range.
*/
finish_range(lb);
lb->first_block = lb->last_block = *blocknr;
lb->first_bcnt = lb->last_bcnt = blockcnt;
return 0;
}
/*
* Not a normal block. Always force a new range.
*/
finish_range(lb);
if (lb->first)
lb->first = 0;
else
fprintf(lb->f, ", ");
if (blockcnt == -1)
fprintf(lb->f, "(IND):%u", *blocknr);
else if (blockcnt == -2)
fprintf(lb->f, "(DIND):%u", *blocknr);
else if (blockcnt == -3)
fprintf(lb->f, "(TIND):%u", *blocknr);
return 0;
}
static void dump_xattr_string(FILE *out, const char *str, int len)
{
int printable = 0;
int i;
/* check: is string "printable enough?" */
for (i = 0; i < len; i++)
if (isprint(str[i]))
printable++;
if (printable <= len*7/8)
printable = 0;
for (i = 0; i < len; i++)
if (printable)
fprintf(out, isprint(str[i]) ? "%c" : "\\%03o",
(unsigned char)str[i]);
else
fprintf(out, "%02x ", (unsigned char)str[i]);
}
static void internal_dump_inode_extra(FILE *out,
const char *prefix EXT2FS_ATTR((unused)),
ext2_ino_t inode_num EXT2FS_ATTR((unused)),
struct ext2_inode_large *inode)
{
struct ext2_ext_attr_entry *entry;
__u32 *magic;
char *start, *end;
unsigned int storage_size;
fprintf(out, "Size of extra inode fields: %u\n", inode->i_extra_isize);
if (inode->i_extra_isize > EXT2_INODE_SIZE(current_fs->super) -
EXT2_GOOD_OLD_INODE_SIZE) {
fprintf(stderr, "invalid inode->i_extra_isize (%u)\n",
inode->i_extra_isize);
return;
}
storage_size = EXT2_INODE_SIZE(current_fs->super) -
EXT2_GOOD_OLD_INODE_SIZE -
inode->i_extra_isize;
magic = (__u32 *)((char *)inode + EXT2_GOOD_OLD_INODE_SIZE +
inode->i_extra_isize);
if (*magic == EXT2_EXT_ATTR_MAGIC) {
fprintf(out, "Extended attributes stored in inode body: \n");
end = (char *) inode + EXT2_INODE_SIZE(current_fs->super);
start = (char *) magic + sizeof(__u32);
entry = (struct ext2_ext_attr_entry *) start;
while (!EXT2_EXT_IS_LAST_ENTRY(entry)) {
struct ext2_ext_attr_entry *next =
EXT2_EXT_ATTR_NEXT(entry);
if (entry->e_value_size > storage_size ||
(char *) next >= end) {
fprintf(out, "invalid EA entry in inode\n");
return;
}
fprintf(out, " ");
dump_xattr_string(out, EXT2_EXT_ATTR_NAME(entry),
entry->e_name_len);
fprintf(out, " = \"");
dump_xattr_string(out, start + entry->e_value_offs,
entry->e_value_size);
fprintf(out, "\" (%u)\n", entry->e_value_size);
entry = next;
}
}
}
static void dump_blocks(FILE *f, const char *prefix, ext2_ino_t inode)
{
struct list_blocks_struct lb;
fprintf(f, "%sBLOCKS:\n%s", prefix, prefix);
lb.total = 0;
lb.first_block = 0;
lb.f = f;
lb.first = 1;
ext2fs_block_iterate2(current_fs, inode, BLOCK_FLAG_READ_ONLY, NULL,
list_blocks_proc, (void *)&lb);
finish_range(&lb);
if (lb.total)
fprintf(f, "\n%sTOTAL: %lld\n", prefix, (long long)lb.total);
fprintf(f,"\n");
}
static int int_log10(unsigned long long arg)
{
int l = 0;
arg = arg / 10;
while (arg) {
l++;
arg = arg / 10;
}
return l;
}
#define DUMP_LEAF_EXTENTS 0x01
#define DUMP_NODE_EXTENTS 0x02
#define DUMP_EXTENT_TABLE 0x04
static void dump_extents(FILE *f, const char *prefix, ext2_ino_t ino,
int flags, int logical_width, int physical_width)
{
ext2_extent_handle_t handle;
struct ext2fs_extent extent;
struct ext2_extent_info info;
int op = EXT2_EXTENT_ROOT;
unsigned int printed = 0;
errcode_t errcode;
errcode = ext2fs_extent_open(current_fs, ino, &handle);
if (errcode)
return;
if (flags & DUMP_EXTENT_TABLE)
fprintf(f, "Level Entries %*s %*s Length Flags\n",
(logical_width*2)+3, "Logical",
(physical_width*2)+3, "Physical");
else
fprintf(f, "%sEXTENTS:\n%s", prefix, prefix);
while (1) {
errcode = ext2fs_extent_get(handle, op, &extent);
if (errcode)
break;
op = EXT2_EXTENT_NEXT;
if (extent.e_flags & EXT2_EXTENT_FLAGS_SECOND_VISIT)
continue;
if (extent.e_flags & EXT2_EXTENT_FLAGS_LEAF) {
if ((flags & DUMP_LEAF_EXTENTS) == 0)
continue;
} else {
if ((flags & DUMP_NODE_EXTENTS) == 0)
continue;
}
errcode = ext2fs_extent_get_info(handle, &info);
if (errcode)
continue;
if (!(extent.e_flags & EXT2_EXTENT_FLAGS_LEAF)) {
if (extent.e_flags & EXT2_EXTENT_FLAGS_SECOND_VISIT)
continue;
if (flags & DUMP_EXTENT_TABLE) {
fprintf(f, "%2d/%2d %3d/%3d %*llu - %*llu "
"%*llu%*s %6u\n",
info.curr_level, info.max_depth,
info.curr_entry, info.num_entries,
logical_width,
extent.e_lblk,
logical_width,
extent.e_lblk + (extent.e_len - 1),
physical_width,
extent.e_pblk,
physical_width+3, "", extent.e_len);
continue;
}
fprintf(f, "%s(NODE #%d, %lld-%lld, blk %lld)",
printed ? ", " : "",
info.curr_entry,
extent.e_lblk,
extent.e_lblk + (extent.e_len - 1),
extent.e_pblk);
printed = 1;
continue;
}
if (flags & DUMP_EXTENT_TABLE) {
fprintf(f, "%2d/%2d %3d/%3d %*llu - %*llu "
"%*llu - %*llu %6u %s\n",
info.curr_level, info.max_depth,
info.curr_entry, info.num_entries,
logical_width,
extent.e_lblk,
logical_width,
extent.e_lblk + (extent.e_len - 1),
physical_width,
extent.e_pblk,
physical_width,
extent.e_pblk + (extent.e_len - 1),
extent.e_len,
extent.e_flags & EXT2_EXTENT_FLAGS_UNINIT ?
"Uninit" : "");
continue;
}
if (extent.e_len == 0)
continue;
else if (extent.e_len == 1)
fprintf(f,
"%s(%lld%s): %lld",
printed ? ", " : "",
extent.e_lblk,
extent.e_flags & EXT2_EXTENT_FLAGS_UNINIT ?
" [uninit]" : "",
extent.e_pblk);
else
fprintf(f,
"%s(%lld-%lld%s): %lld-%lld",
printed ? ", " : "",
extent.e_lblk,
extent.e_lblk + (extent.e_len - 1),
extent.e_flags & EXT2_EXTENT_FLAGS_UNINIT ?
" [uninit]" : "",
extent.e_pblk,
extent.e_pblk + (extent.e_len - 1));
printed = 1;
}
if (printed)
fprintf(f, "\n");
}
void internal_dump_inode(FILE *out, const char *prefix,
ext2_ino_t inode_num, struct ext2_inode *inode,
int do_dump_blocks)
{
const char *i_type;
char frag, fsize;
int os = current_fs->super->s_creator_os;
struct ext2_inode_large *large_inode;
int is_large_inode = 0;
if (EXT2_INODE_SIZE(current_fs->super) > EXT2_GOOD_OLD_INODE_SIZE)
is_large_inode = 1;
large_inode = (struct ext2_inode_large *) inode;
if (LINUX_S_ISDIR(inode->i_mode)) i_type = "directory";
else if (LINUX_S_ISREG(inode->i_mode)) i_type = "regular";
else if (LINUX_S_ISLNK(inode->i_mode)) i_type = "symlink";
else if (LINUX_S_ISBLK(inode->i_mode)) i_type = "block special";
else if (LINUX_S_ISCHR(inode->i_mode)) i_type = "character special";
else if (LINUX_S_ISFIFO(inode->i_mode)) i_type = "FIFO";
else if (LINUX_S_ISSOCK(inode->i_mode)) i_type = "socket";
else i_type = "bad type";
fprintf(out, "%sInode: %u Type: %s ", prefix, inode_num, i_type);
fprintf(out, "%sMode: %04o Flags: 0x%x\n",
prefix, inode->i_mode & 0777, inode->i_flags);
if (is_large_inode && large_inode->i_extra_isize >= 24) {
fprintf(out, "%sGeneration: %u Version: 0x%08x:%08x\n",
prefix, inode->i_generation, large_inode->i_version_hi,
inode->osd1.linux1.l_i_version);
} else {
fprintf(out, "%sGeneration: %u Version: 0x%08x\n", prefix,
inode->i_generation, inode->osd1.linux1.l_i_version);
}
fprintf(out, "%sUser: %5d Group: %5d Size: ",
prefix, inode_uid(*inode), inode_gid(*inode));
if (LINUX_S_ISREG(inode->i_mode)) {
unsigned long long i_size = (inode->i_size |
((unsigned long long)inode->i_size_high << 32));
fprintf(out, "%llu\n", i_size);
} else
fprintf(out, "%d\n", inode->i_size);
if (os == EXT2_OS_HURD)
fprintf(out,
"%sFile ACL: %d Directory ACL: %d Translator: %d\n",
prefix,
inode->i_file_acl, LINUX_S_ISDIR(inode->i_mode) ? inode->i_dir_acl : 0,
inode->osd1.hurd1.h_i_translator);
else
fprintf(out, "%sFile ACL: %llu Directory ACL: %d\n",
prefix,
inode->i_file_acl | ((long long)
(inode->osd2.linux2.l_i_file_acl_high) << 32),
LINUX_S_ISDIR(inode->i_mode) ? inode->i_dir_acl : 0);
if (os == EXT2_OS_LINUX)
fprintf(out, "%sLinks: %d Blockcount: %llu\n",
prefix, inode->i_links_count,
(((unsigned long long)
inode->osd2.linux2.l_i_blocks_hi << 32)) +
inode->i_blocks);
else
fprintf(out, "%sLinks: %d Blockcount: %u\n",
prefix, inode->i_links_count, inode->i_blocks);
switch (os) {
case EXT2_OS_HURD:
frag = inode->osd2.hurd2.h_i_frag;
fsize = inode->osd2.hurd2.h_i_fsize;
break;
default:
frag = fsize = 0;
}
fprintf(out, "%sFragment: Address: %d Number: %d Size: %d\n",
prefix, inode->i_faddr, frag, fsize);
if (is_large_inode && large_inode->i_extra_isize >= 24) {
fprintf(out, "%s ctime: 0x%08x:%08x -- %s", prefix,
inode->i_ctime, large_inode->i_ctime_extra,
time_to_string(inode->i_ctime));
fprintf(out, "%s atime: 0x%08x:%08x -- %s", prefix,
inode->i_atime, large_inode->i_atime_extra,
time_to_string(inode->i_atime));
fprintf(out, "%s mtime: 0x%08x:%08x -- %s", prefix,
inode->i_mtime, large_inode->i_mtime_extra,
time_to_string(inode->i_mtime));
fprintf(out, "%scrtime: 0x%08x:%08x -- %s", prefix,
large_inode->i_crtime, large_inode->i_crtime_extra,
time_to_string(large_inode->i_crtime));
} else {
fprintf(out, "%sctime: 0x%08x -- %s", prefix, inode->i_ctime,
time_to_string(inode->i_ctime));
fprintf(out, "%satime: 0x%08x -- %s", prefix, inode->i_atime,
time_to_string(inode->i_atime));
fprintf(out, "%smtime: 0x%08x -- %s", prefix, inode->i_mtime,
time_to_string(inode->i_mtime));
}
if (inode->i_dtime)
fprintf(out, "%sdtime: 0x%08x -- %s", prefix, inode->i_dtime,
time_to_string(inode->i_dtime));
if (EXT2_INODE_SIZE(current_fs->super) > EXT2_GOOD_OLD_INODE_SIZE)
internal_dump_inode_extra(out, prefix, inode_num,
(struct ext2_inode_large *) inode);
if (LINUX_S_ISLNK(inode->i_mode) && ext2fs_inode_data_blocks(current_fs,inode) == 0)
fprintf(out, "%sFast_link_dest: %.*s\n", prefix,
(int) inode->i_size, (char *)inode->i_block);
else if (LINUX_S_ISBLK(inode->i_mode) || LINUX_S_ISCHR(inode->i_mode)) {
int major, minor;
const char *devnote;
if (inode->i_block[0]) {
major = (inode->i_block[0] >> 8) & 255;
minor = inode->i_block[0] & 255;
devnote = "";
} else {
major = (inode->i_block[1] & 0xfff00) >> 8;
minor = ((inode->i_block[1] & 0xff) |
((inode->i_block[1] >> 12) & 0xfff00));
devnote = "(New-style) ";
}
fprintf(out, "%sDevice major/minor number: %02d:%02d (hex %02x:%02x)\n",
devnote, major, minor, major, minor);
} else if (do_dump_blocks) {
if (inode->i_flags & EXT4_EXTENTS_FL)
dump_extents(out, prefix, inode_num,
DUMP_LEAF_EXTENTS, 0, 0);
else
dump_blocks(out, prefix, inode_num);
}
}
static void dump_inode(ext2_ino_t inode_num, struct ext2_inode *inode)
{
FILE *out;
out = open_pager();
internal_dump_inode(out, "", inode_num, inode, 1);
close_pager(out);
}
void do_stat(int argc, char *argv[])
{
ext2_ino_t inode;
struct ext2_inode * inode_buf;
if (check_fs_open(argv[0]))
return;
inode_buf = (struct ext2_inode *)
malloc(EXT2_INODE_SIZE(current_fs->super));
if (!inode_buf) {
fprintf(stderr, "do_stat: can't allocate buffer\n");
return;
}
if (common_inode_args_process(argc, argv, &inode, 0)) {
free(inode_buf);
return;
}
if (debugfs_read_inode_full(inode, inode_buf, argv[0],
EXT2_INODE_SIZE(current_fs->super))) {
free(inode_buf);
return;
}
dump_inode(inode, inode_buf);
free(inode_buf);
return;
}
void do_dump_extents(int argc, char *argv[])
{
struct ext2_inode inode;
ext2_ino_t ino;
FILE *out;
int c, flags = 0;
int logical_width;
int physical_width;
reset_getopt();
while ((c = getopt(argc, argv, "nl")) != EOF) {
switch (c) {
case 'n':
flags |= DUMP_NODE_EXTENTS;
break;
case 'l':
flags |= DUMP_LEAF_EXTENTS;
break;
}
}
if (argc != optind+1) {
print_usage:
com_err(0, 0, "Usage: dump_extents [-n] [-l] file");
return;
}
if (flags == 0)
flags = DUMP_NODE_EXTENTS | DUMP_LEAF_EXTENTS;
flags |= DUMP_EXTENT_TABLE;
if (check_fs_open(argv[0]))
return;
ino = string_to_inode(argv[optind]);
if (ino == 0)
return;
if (debugfs_read_inode(ino, &inode, argv[0]))
return;
if ((inode.i_flags & EXT4_EXTENTS_FL) == 0) {
fprintf(stderr, "%s: does not uses extent block maps\n",
argv[optind]);
return;
}
logical_width = int_log10(((inode.i_size |
(__u64) inode.i_size_high << 32) +
current_fs->blocksize - 1) /
current_fs->blocksize) + 1;
if (logical_width < 5)
logical_width = 5;
physical_width = int_log10(current_fs->super->s_blocks_count) + 1;
if (physical_width < 5)
physical_width = 5;
out = open_pager();
dump_extents(out, "", ino, flags, logical_width, physical_width);
close_pager(out);
return;
}
void do_chroot(int argc, char *argv[])
{
ext2_ino_t inode;
int retval;
if (common_inode_args_process(argc, argv, &inode, 0))
return;
retval = ext2fs_check_directory(current_fs, inode);
if (retval) {
com_err(argv[1], retval, 0);
return;
}
root = inode;
}
void do_clri(int argc, char *argv[])
{
ext2_ino_t inode;
struct ext2_inode inode_buf;
if (common_inode_args_process(argc, argv, &inode, CHECK_FS_RW))
return;
if (debugfs_read_inode(inode, &inode_buf, argv[0]))
return;
memset(&inode_buf, 0, sizeof(inode_buf));
if (debugfs_write_inode(inode, &inode_buf, argv[0]))
return;
}
void do_freei(int argc, char *argv[])
{
ext2_ino_t inode;
if (common_inode_args_process(argc, argv, &inode,
CHECK_FS_RW | CHECK_FS_BITMAPS))
return;
if (!ext2fs_test_inode_bitmap(current_fs->inode_map,inode))
com_err(argv[0], 0, "Warning: inode already clear");
ext2fs_unmark_inode_bitmap(current_fs->inode_map,inode);
ext2fs_mark_ib_dirty(current_fs);
}
void do_seti(int argc, char *argv[])
{
ext2_ino_t inode;
if (common_inode_args_process(argc, argv, &inode,
CHECK_FS_RW | CHECK_FS_BITMAPS))
return;
if (ext2fs_test_inode_bitmap(current_fs->inode_map,inode))
com_err(argv[0], 0, "Warning: inode already set");
ext2fs_mark_inode_bitmap(current_fs->inode_map,inode);
ext2fs_mark_ib_dirty(current_fs);
}
void do_testi(int argc, char *argv[])
{
ext2_ino_t inode;
if (common_inode_args_process(argc, argv, &inode, CHECK_FS_BITMAPS))
return;
if (ext2fs_test_inode_bitmap(current_fs->inode_map,inode))
printf("Inode %u is marked in use\n", inode);
else
printf("Inode %u is not in use\n", inode);
}
void do_freeb(int argc, char *argv[])
{
blk_t block;
blk_t count = 1;
if (common_block_args_process(argc, argv, &block, &count))
return;
if (check_fs_read_write(argv[0]))
return;
while (count-- > 0) {
if (!ext2fs_test_block_bitmap(current_fs->block_map,block))
com_err(argv[0], 0, "Warning: block %u already clear",
block);
ext2fs_unmark_block_bitmap(current_fs->block_map,block);
block++;
}
ext2fs_mark_bb_dirty(current_fs);
}
void do_setb(int argc, char *argv[])
{
blk_t block;
blk_t count = 1;
if (common_block_args_process(argc, argv, &block, &count))
return;
if (check_fs_read_write(argv[0]))
return;
while (count-- > 0) {
if (ext2fs_test_block_bitmap(current_fs->block_map,block))
com_err(argv[0], 0, "Warning: block %u already set",
block);
ext2fs_mark_block_bitmap(current_fs->block_map,block);
block++;
}
ext2fs_mark_bb_dirty(current_fs);
}
void do_testb(int argc, char *argv[])
{
blk_t block;
blk_t count = 1;
if (common_block_args_process(argc, argv, &block, &count))
return;
while (count-- > 0) {
if (ext2fs_test_block_bitmap(current_fs->block_map,block))
printf("Block %u marked in use\n", block);
else
printf("Block %u not in use\n", block);
block++;
}
}
static void modify_u8(char *com, const char *prompt,
const char *format, __u8 *val)
{
char buf[200];
unsigned long v;
char *tmp;
sprintf(buf, format, *val);
printf("%30s [%s] ", prompt, buf);
if (!fgets(buf, sizeof(buf), stdin))
return;
if (buf[strlen (buf) - 1] == '\n')
buf[strlen (buf) - 1] = '\0';
if (!buf[0])
return;
v = strtoul(buf, &tmp, 0);
if (*tmp)
com_err(com, 0, "Bad value - %s", buf);
else
*val = v;
}
static void modify_u16(char *com, const char *prompt,
const char *format, __u16 *val)
{
char buf[200];
unsigned long v;
char *tmp;
sprintf(buf, format, *val);
printf("%30s [%s] ", prompt, buf);
if (!fgets(buf, sizeof(buf), stdin))
return;
if (buf[strlen (buf) - 1] == '\n')
buf[strlen (buf) - 1] = '\0';
if (!buf[0])
return;
v = strtoul(buf, &tmp, 0);
if (*tmp)
com_err(com, 0, "Bad value - %s", buf);
else
*val = v;
}
static void modify_u32(char *com, const char *prompt,
const char *format, __u32 *val)
{
char buf[200];
unsigned long v;
char *tmp;
sprintf(buf, format, *val);
printf("%30s [%s] ", prompt, buf);
if (!fgets(buf, sizeof(buf), stdin))
return;
if (buf[strlen (buf) - 1] == '\n')
buf[strlen (buf) - 1] = '\0';
if (!buf[0])
return;
v = strtoul(buf, &tmp, 0);
if (*tmp)
com_err(com, 0, "Bad value - %s", buf);
else
*val = v;
}
void do_modify_inode(int argc, char *argv[])
{
struct ext2_inode inode;
ext2_ino_t inode_num;
int i;
unsigned char *frag, *fsize;
char buf[80];
int os;
const char *hex_format = "0x%x";
const char *octal_format = "0%o";
const char *decimal_format = "%d";
const char *unsignedlong_format = "%lu";
if (common_inode_args_process(argc, argv, &inode_num, CHECK_FS_RW))
return;
os = current_fs->super->s_creator_os;
if (debugfs_read_inode(inode_num, &inode, argv[1]))
return;
modify_u16(argv[0], "Mode", octal_format, &inode.i_mode);
modify_u16(argv[0], "User ID", decimal_format, &inode.i_uid);
modify_u16(argv[0], "Group ID", decimal_format, &inode.i_gid);
modify_u32(argv[0], "Size", unsignedlong_format, &inode.i_size);
modify_u32(argv[0], "Creation time", decimal_format, &inode.i_ctime);
modify_u32(argv[0], "Modification time", decimal_format, &inode.i_mtime);
modify_u32(argv[0], "Access time", decimal_format, &inode.i_atime);
modify_u32(argv[0], "Deletion time", decimal_format, &inode.i_dtime);
modify_u16(argv[0], "Link count", decimal_format, &inode.i_links_count);
if (os == EXT2_OS_LINUX)
modify_u16(argv[0], "Block count high", unsignedlong_format,
&inode.osd2.linux2.l_i_blocks_hi);
modify_u32(argv[0], "Block count", unsignedlong_format, &inode.i_blocks);
modify_u32(argv[0], "File flags", hex_format, &inode.i_flags);
modify_u32(argv[0], "Generation", hex_format, &inode.i_generation);
#if 0
modify_u32(argv[0], "Reserved1", decimal_format, &inode.i_reserved1);
#endif
modify_u32(argv[0], "File acl", decimal_format, &inode.i_file_acl);
if (LINUX_S_ISDIR(inode.i_mode))
modify_u32(argv[0], "Directory acl", decimal_format, &inode.i_dir_acl);
else
modify_u32(argv[0], "High 32bits of size", decimal_format, &inode.i_size_high);
if (os == EXT2_OS_HURD)
modify_u32(argv[0], "Translator Block",
decimal_format, &inode.osd1.hurd1.h_i_translator);
modify_u32(argv[0], "Fragment address", decimal_format, &inode.i_faddr);
switch (os) {
case EXT2_OS_HURD:
frag = &inode.osd2.hurd2.h_i_frag;
fsize = &inode.osd2.hurd2.h_i_fsize;
break;
default:
frag = fsize = 0;
}
if (frag)
modify_u8(argv[0], "Fragment number", decimal_format, frag);
if (fsize)
modify_u8(argv[0], "Fragment size", decimal_format, fsize);
for (i=0; i < EXT2_NDIR_BLOCKS; i++) {
sprintf(buf, "Direct Block #%d", i);
modify_u32(argv[0], buf, decimal_format, &inode.i_block[i]);
}
modify_u32(argv[0], "Indirect Block", decimal_format,
&inode.i_block[EXT2_IND_BLOCK]);
modify_u32(argv[0], "Double Indirect Block", decimal_format,
&inode.i_block[EXT2_DIND_BLOCK]);
modify_u32(argv[0], "Triple Indirect Block", decimal_format,
&inode.i_block[EXT2_TIND_BLOCK]);
if (debugfs_write_inode(inode_num, &inode, argv[1]))
return;
}
void do_change_working_dir(int argc, char *argv[])
{
ext2_ino_t inode;
int retval;
if (common_inode_args_process(argc, argv, &inode, 0))
return;
retval = ext2fs_check_directory(current_fs, inode);
if (retval) {
com_err(argv[1], retval, 0);
return;
}
cwd = inode;
return;
}
void do_print_working_directory(int argc, char *argv[])
{
int retval;
char *pathname = NULL;
if (common_args_process(argc, argv, 1, 1,
"print_working_directory", "", 0))
return;
retval = ext2fs_get_pathname(current_fs, cwd, 0, &pathname);
if (retval) {
com_err(argv[0], retval,
"while trying to get pathname of cwd");
}
printf("[pwd] INODE: %6u PATH: %s\n",
cwd, pathname ? pathname : "NULL");
if (pathname) {
free(pathname);
pathname = NULL;
}
retval = ext2fs_get_pathname(current_fs, root, 0, &pathname);
if (retval) {
com_err(argv[0], retval,
"while trying to get pathname of root");
}
printf("[root] INODE: %6u PATH: %s\n",
root, pathname ? pathname : "NULL");
if (pathname) {
free(pathname);
pathname = NULL;
}
return;
}
/*
* Given a mode, return the ext2 file type
*/
static int ext2_file_type(unsigned int mode)
{
if (LINUX_S_ISREG(mode))
return EXT2_FT_REG_FILE;
if (LINUX_S_ISDIR(mode))
return EXT2_FT_DIR;
if (LINUX_S_ISCHR(mode))
return EXT2_FT_CHRDEV;
if (LINUX_S_ISBLK(mode))
return EXT2_FT_BLKDEV;
if (LINUX_S_ISLNK(mode))
return EXT2_FT_SYMLINK;
if (LINUX_S_ISFIFO(mode))
return EXT2_FT_FIFO;
if (LINUX_S_ISSOCK(mode))
return EXT2_FT_SOCK;
return 0;
}
static void make_link(char *sourcename, char *destname)
{
ext2_ino_t ino;
struct ext2_inode inode;
int retval;
ext2_ino_t dir;
char *dest, *cp, *base_name;
/*
* Get the source inode
*/
ino = string_to_inode(sourcename);
if (!ino)
return;
base_name = strrchr(sourcename, '/');
if (base_name)
base_name++;
else
base_name = sourcename;
/*
* Figure out the destination. First see if it exists and is
* a directory.
*/
if (! (retval=ext2fs_namei(current_fs, root, cwd, destname, &dir)))
dest = base_name;
else {
/*
* OK, it doesn't exist. See if it is
* '<dir>/basename' or 'basename'
*/
cp = strrchr(destname, '/');
if (cp) {
*cp = 0;
dir = string_to_inode(destname);
if (!dir)
return;
dest = cp+1;
} else {
dir = cwd;
dest = destname;
}
}
if (debugfs_read_inode(ino, &inode, sourcename))
return;
retval = ext2fs_link(current_fs, dir, dest, ino,
ext2_file_type(inode.i_mode));
if (retval)
com_err("make_link", retval, 0);
return;
}
void do_link(int argc, char *argv[])
{
if (common_args_process(argc, argv, 3, 3, "link",
"<source file> <dest_name>", CHECK_FS_RW))
return;
make_link(argv[1], argv[2]);
}
static int mark_blocks_proc(ext2_filsys fs, blk_t *blocknr,
int blockcnt EXT2FS_ATTR((unused)),
void *private EXT2FS_ATTR((unused)))
{
blk_t block;
block = *blocknr;
ext2fs_block_alloc_stats(fs, block, +1);
return 0;
}
void do_undel(int argc, char *argv[])
{
ext2_ino_t ino;
struct ext2_inode inode;
if (common_args_process(argc, argv, 2, 3, "undelete",
"<inode_num> [dest_name]",
CHECK_FS_RW | CHECK_FS_BITMAPS))
return;
ino = string_to_inode(argv[1]);
if (!ino)
return;
if (debugfs_read_inode(ino, &inode, argv[1]))
return;
if (ext2fs_test_inode_bitmap(current_fs->inode_map, ino)) {
com_err(argv[1], 0, "Inode is not marked as deleted");
return;
}
/*
* XXX this function doesn't handle changing the links count on the
* parent directory when undeleting a directory.
*/
inode.i_links_count = LINUX_S_ISDIR(inode.i_mode) ? 2 : 1;
inode.i_dtime = 0;
if (debugfs_write_inode(ino, &inode, argv[0]))
return;
ext2fs_block_iterate(current_fs, ino, BLOCK_FLAG_READ_ONLY, NULL,
mark_blocks_proc, NULL);
ext2fs_inode_alloc_stats2(current_fs, ino, +1, 0);
if (argc > 2)
make_link(argv[1], argv[2]);
}
static void unlink_file_by_name(char *filename)
{
int retval;
ext2_ino_t dir;
char *base_name;
base_name = strrchr(filename, '/');
if (base_name) {
*base_name++ = '\0';
dir = string_to_inode(filename);
if (!dir)
return;
} else {
dir = cwd;
base_name = filename;
}
retval = ext2fs_unlink(current_fs, dir, base_name, 0, 0);
if (retval)
com_err("unlink_file_by_name", retval, 0);
return;
}
void do_unlink(int argc, char *argv[])
{
if (common_args_process(argc, argv, 2, 2, "link",
"<pathname>", CHECK_FS_RW))
return;
unlink_file_by_name(argv[1]);
}
void do_find_free_block(int argc, char *argv[])
{
blk_t free_blk, goal, first_free = 0;
int count;
errcode_t retval;
char *tmp;
if ((argc > 3) || (argc==2 && *argv[1] == '?')) {
com_err(argv[0], 0, "Usage: find_free_block [count [goal]]");
return;
}
if (check_fs_open(argv[0]))
return;
if (argc > 1) {
count = strtol(argv[1],&tmp,0);
if (*tmp) {
com_err(argv[0], 0, "Bad count - %s", argv[1]);
return;
}
} else
count = 1;
if (argc > 2) {
goal = strtol(argv[2], &tmp, 0);
if (*tmp) {
com_err(argv[0], 0, "Bad goal - %s", argv[1]);
return;
}
}
else
goal = current_fs->super->s_first_data_block;
printf("Free blocks found: ");
free_blk = goal - 1;
while (count-- > 0) {
retval = ext2fs_new_block(current_fs, free_blk + 1, 0,
&free_blk);
if (first_free) {
if (first_free == free_blk)
break;
} else
first_free = free_blk;
if (retval) {
com_err("ext2fs_new_block", retval, 0);
return;
} else
printf("%u ", free_blk);
}
printf("\n");
}
void do_find_free_inode(int argc, char *argv[])
{
ext2_ino_t free_inode, dir;
int mode;
int retval;
char *tmp;
if (argc > 3 || (argc>1 && *argv[1] == '?')) {
com_err(argv[0], 0, "Usage: find_free_inode [dir] [mode]");
return;
}
if (check_fs_open(argv[0]))
return;
if (argc > 1) {
dir = strtol(argv[1], &tmp, 0);
if (*tmp) {
com_err(argv[0], 0, "Bad dir - %s", argv[1]);
return;
}
}
else
dir = root;
if (argc > 2) {
mode = strtol(argv[2], &tmp, 0);
if (*tmp) {
com_err(argv[0], 0, "Bad mode - %s", argv[2]);
return;
}
} else
mode = 010755;
retval = ext2fs_new_inode(current_fs, dir, mode, 0, &free_inode);
if (retval)
com_err("ext2fs_new_inode", retval, 0);
else
printf("Free inode found: %u\n", free_inode);
}
static errcode_t copy_file(int fd, ext2_ino_t newfile)
{
ext2_file_t e2_file;
errcode_t retval;
int got;
unsigned int written;
char buf[8192];
char *ptr;
retval = ext2fs_file_open(current_fs, newfile,
EXT2_FILE_WRITE, &e2_file);
if (retval)
return retval;
while (1) {
got = read(fd, buf, sizeof(buf));
if (got == 0)
break;
if (got < 0) {
retval = errno;
goto fail;
}
ptr = buf;
while (got > 0) {
retval = ext2fs_file_write(e2_file, ptr,
got, &written);
if (retval)
goto fail;
got -= written;
ptr += written;
}
}
retval = ext2fs_file_close(e2_file);
return retval;
fail:
(void) ext2fs_file_close(e2_file);
return retval;
}
void do_write(int argc, char *argv[])
{
int fd;
struct stat statbuf;
ext2_ino_t newfile;
errcode_t retval;
struct ext2_inode inode;
if (common_args_process(argc, argv, 3, 3, "write",
"<native file> <new file>", CHECK_FS_RW))
return;
fd = open(argv[1], O_RDONLY);
if (fd < 0) {
com_err(argv[1], errno, 0);
return;
}
if (fstat(fd, &statbuf) < 0) {
com_err(argv[1], errno, 0);
close(fd);
return;
}
retval = ext2fs_namei(current_fs, root, cwd, argv[2], &newfile);
if (retval == 0) {
com_err(argv[0], 0, "The file '%s' already exists\n", argv[2]);
close(fd);
return;
}
retval = ext2fs_new_inode(current_fs, cwd, 010755, 0, &newfile);
if (retval) {
com_err(argv[0], retval, 0);
close(fd);
return;
}
printf("Allocated inode: %u\n", newfile);
retval = ext2fs_link(current_fs, cwd, argv[2], newfile,
EXT2_FT_REG_FILE);
if (retval == EXT2_ET_DIR_NO_SPACE) {
retval = ext2fs_expand_dir(current_fs, cwd);
if (retval) {
com_err(argv[0], retval, "while expanding directory");
close(fd);
return;
}
retval = ext2fs_link(current_fs, cwd, argv[2], newfile,
EXT2_FT_REG_FILE);
}
if (retval) {
com_err(argv[2], retval, 0);
close(fd);
return;
}
if (ext2fs_test_inode_bitmap(current_fs->inode_map,newfile))
com_err(argv[0], 0, "Warning: inode already set");
ext2fs_inode_alloc_stats2(current_fs, newfile, +1, 0);
memset(&inode, 0, sizeof(inode));
inode.i_mode = (statbuf.st_mode & ~LINUX_S_IFMT) | LINUX_S_IFREG;
inode.i_atime = inode.i_ctime = inode.i_mtime =
current_fs->now ? current_fs->now : time(0);
inode.i_links_count = 1;
inode.i_size = statbuf.st_size;
if (current_fs->super->s_feature_incompat &
EXT3_FEATURE_INCOMPAT_EXTENTS)
inode.i_flags |= EXT4_EXTENTS_FL;
if (debugfs_write_new_inode(newfile, &inode, argv[0])) {
close(fd);
return;
}
if (LINUX_S_ISREG(inode.i_mode)) {
retval = copy_file(fd, newfile);
if (retval)
com_err("copy_file", retval, 0);
}
close(fd);
}
void do_mknod(int argc, char *argv[])
{
unsigned long mode, major, minor;
ext2_ino_t newfile;
errcode_t retval;
struct ext2_inode inode;
int filetype, nr;
if (check_fs_open(argv[0]))
return;
if (argc < 3 || argv[2][1]) {
usage:
com_err(argv[0], 0, "Usage: mknod <name> [p| [c|b] <major> <minor>]");
return;
}
mode = minor = major = 0;
switch (argv[2][0]) {
case 'p':
mode = LINUX_S_IFIFO;
filetype = EXT2_FT_FIFO;
nr = 3;
break;
case 'c':
mode = LINUX_S_IFCHR;
filetype = EXT2_FT_CHRDEV;
nr = 5;
break;
case 'b':
mode = LINUX_S_IFBLK;
filetype = EXT2_FT_BLKDEV;
nr = 5;
break;
default:
filetype = 0;
nr = 0;
}
if (nr == 5) {
major = strtoul(argv[3], argv+3, 0);
minor = strtoul(argv[4], argv+4, 0);
if (major > 65535 || minor > 65535 || argv[3][0] || argv[4][0])
nr = 0;
}
if (argc != nr)
goto usage;
if (check_fs_read_write(argv[0]))
return;
retval = ext2fs_new_inode(current_fs, cwd, 010755, 0, &newfile);
if (retval) {
com_err(argv[0], retval, 0);
return;
}
printf("Allocated inode: %u\n", newfile);
retval = ext2fs_link(current_fs, cwd, argv[1], newfile, filetype);
if (retval == EXT2_ET_DIR_NO_SPACE) {
retval = ext2fs_expand_dir(current_fs, cwd);
if (retval) {
com_err(argv[0], retval, "while expanding directory");
return;
}
retval = ext2fs_link(current_fs, cwd, argv[1], newfile,
filetype);
}
if (retval) {
com_err(argv[1], retval, 0);
return;
}
if (ext2fs_test_inode_bitmap(current_fs->inode_map,newfile))
com_err(argv[0], 0, "Warning: inode already set");
ext2fs_mark_inode_bitmap(current_fs->inode_map, newfile);
ext2fs_mark_ib_dirty(current_fs);
memset(&inode, 0, sizeof(inode));
inode.i_mode = mode;
inode.i_atime = inode.i_ctime = inode.i_mtime =
current_fs->now ? current_fs->now : time(0);
if ((major < 256) && (minor < 256)) {
inode.i_block[0] = major*256+minor;
inode.i_block[1] = 0;
} else {
inode.i_block[0] = 0;
inode.i_block[1] = (minor & 0xff) | (major << 8) | ((minor & ~0xff) << 12);
}
inode.i_links_count = 1;
if (debugfs_write_new_inode(newfile, &inode, argv[0]))
return;
}
void do_mkdir(int argc, char *argv[])
{
char *cp;
ext2_ino_t parent;
char *name;
errcode_t retval;
if (common_args_process(argc, argv, 2, 2, "mkdir",
"<filename>", CHECK_FS_RW))
return;
cp = strrchr(argv[1], '/');
if (cp) {
*cp = 0;
parent = string_to_inode(argv[1]);
if (!parent) {
com_err(argv[1], ENOENT, 0);
return;
}
name = cp+1;
} else {
parent = cwd;
name = argv[1];
}
try_again:
retval = ext2fs_mkdir(current_fs, parent, 0, name);
if (retval == EXT2_ET_DIR_NO_SPACE) {
retval = ext2fs_expand_dir(current_fs, parent);
if (retval) {
com_err(argv[0], retval, "while expanding directory");
return;
}
goto try_again;
}
if (retval) {
com_err("ext2fs_mkdir", retval, 0);
return;
}
}
static int release_blocks_proc(ext2_filsys fs, blk_t *blocknr,
int blockcnt EXT2FS_ATTR((unused)),
void *private EXT2FS_ATTR((unused)))
{
blk_t block;
block = *blocknr;
ext2fs_block_alloc_stats(fs, block, -1);
return 0;
}
static void kill_file_by_inode(ext2_ino_t inode)
{
struct ext2_inode inode_buf;
if (debugfs_read_inode(inode, &inode_buf, 0))
return;
inode_buf.i_dtime = current_fs->now ? current_fs->now : time(0);
if (debugfs_write_inode(inode, &inode_buf, 0))
return;
if (!ext2fs_inode_has_valid_blocks(&inode_buf))
return;
ext2fs_block_iterate(current_fs, inode, BLOCK_FLAG_READ_ONLY, NULL,
release_blocks_proc, NULL);
printf("\n");
ext2fs_inode_alloc_stats2(current_fs, inode, -1,
LINUX_S_ISDIR(inode_buf.i_mode));
}
void do_kill_file(int argc, char *argv[])
{
ext2_ino_t inode_num;
if (common_inode_args_process(argc, argv, &inode_num, CHECK_FS_RW))
return;
kill_file_by_inode(inode_num);
}
void do_rm(int argc, char *argv[])
{
int retval;
ext2_ino_t inode_num;
struct ext2_inode inode;
if (common_args_process(argc, argv, 2, 2, "rm",
"<filename>", CHECK_FS_RW))
return;
retval = ext2fs_namei(current_fs, root, cwd, argv[1], &inode_num);
if (retval) {
com_err(argv[0], retval, "while trying to resolve filename");
return;
}
if (debugfs_read_inode(inode_num, &inode, argv[0]))
return;
if (LINUX_S_ISDIR(inode.i_mode)) {
com_err(argv[0], 0, "file is a directory");
return;
}
--inode.i_links_count;
if (debugfs_write_inode(inode_num, &inode, argv[0]))
return;
unlink_file_by_name(argv[1]);
if (inode.i_links_count == 0)
kill_file_by_inode(inode_num);
}
struct rd_struct {
ext2_ino_t parent;
int empty;
};
static int rmdir_proc(ext2_ino_t dir EXT2FS_ATTR((unused)),
int entry EXT2FS_ATTR((unused)),
struct ext2_dir_entry *dirent,
int offset EXT2FS_ATTR((unused)),
int blocksize EXT2FS_ATTR((unused)),
char *buf EXT2FS_ATTR((unused)),
void *private)
{
struct rd_struct *rds = (struct rd_struct *) private;
if (dirent->inode == 0)
return 0;
if (((dirent->name_len&0xFF) == 1) && (dirent->name[0] == '.'))
return 0;
if (((dirent->name_len&0xFF) == 2) && (dirent->name[0] == '.') &&
(dirent->name[1] == '.')) {
rds->parent = dirent->inode;
return 0;
}
rds->empty = 0;
return 0;
}
void do_rmdir(int argc, char *argv[])
{
int retval;
ext2_ino_t inode_num;
struct ext2_inode inode;
struct rd_struct rds;
if (common_args_process(argc, argv, 2, 2, "rmdir",
"<filename>", CHECK_FS_RW))
return;
retval = ext2fs_namei(current_fs, root, cwd, argv[1], &inode_num);
if (retval) {
com_err(argv[0], retval, "while trying to resolve filename");
return;
}
if (debugfs_read_inode(inode_num, &inode, argv[0]))
return;
if (!LINUX_S_ISDIR(inode.i_mode)) {
com_err(argv[0], 0, "file is not a directory");
return;
}
rds.parent = 0;
rds.empty = 1;
retval = ext2fs_dir_iterate2(current_fs, inode_num, 0,
0, rmdir_proc, &rds);
if (retval) {
com_err(argv[0], retval, "while iterating over directory");
return;
}
if (rds.empty == 0) {
com_err(argv[0], 0, "directory not empty");
return;
}
inode.i_links_count = 0;
if (debugfs_write_inode(inode_num, &inode, argv[0]))
return;
unlink_file_by_name(argv[1]);
kill_file_by_inode(inode_num);
if (rds.parent) {
if (debugfs_read_inode(rds.parent, &inode, argv[0]))
return;
if (inode.i_links_count > 1)
inode.i_links_count--;
if (debugfs_write_inode(rds.parent, &inode, argv[0]))
return;
}
}
void do_show_debugfs_params(int argc EXT2FS_ATTR((unused)),
char *argv[] EXT2FS_ATTR((unused)))
{
FILE *out = stdout;
if (current_fs)
fprintf(out, "Open mode: read-%s\n",
current_fs->flags & EXT2_FLAG_RW ? "write" : "only");
fprintf(out, "Filesystem in use: %s\n",
current_fs ? current_fs->device_name : "--none--");
}
void do_expand_dir(int argc, char *argv[])
{
ext2_ino_t inode;
int retval;
if (common_inode_args_process(argc, argv, &inode, CHECK_FS_RW))
return;
retval = ext2fs_expand_dir(current_fs, inode);
if (retval)
com_err("ext2fs_expand_dir", retval, 0);
return;
}
void do_features(int argc, char *argv[])
{
int i;
if (check_fs_open(argv[0]))
return;
if ((argc != 1) && check_fs_read_write(argv[0]))
return;
for (i=1; i < argc; i++) {
if (e2p_edit_feature(argv[i],
¤t_fs->super->s_feature_compat, 0))
com_err(argv[0], 0, "Unknown feature: %s\n",
argv[i]);
else
ext2fs_mark_super_dirty(current_fs);
}
print_features(current_fs->super, stdout);
}
void do_bmap(int argc, char *argv[])
{
ext2_ino_t ino;
blk_t blk, pblk;
int err;
errcode_t errcode;
if (common_args_process(argc, argv, 3, 3, argv[0],
"<file> logical_blk", 0))
return;
ino = string_to_inode(argv[1]);
if (!ino)
return;
blk = parse_ulong(argv[2], argv[0], "logical_block", &err);
errcode = ext2fs_bmap(current_fs, ino, 0, 0, 0, blk, &pblk);
if (errcode) {
com_err("argv[0]", errcode,
"while mapping logical block %u\n", blk);
return;
}
printf("%u\n", pblk);
}
void do_imap(int argc, char *argv[])
{
ext2_ino_t ino;
unsigned long group, block, block_nr, offset;
if (common_args_process(argc, argv, 2, 2, argv[0],
"<file>", 0))
return;
ino = string_to_inode(argv[1]);
if (!ino)
return;
group = (ino - 1) / EXT2_INODES_PER_GROUP(current_fs->super);
offset = ((ino - 1) % EXT2_INODES_PER_GROUP(current_fs->super)) *
EXT2_INODE_SIZE(current_fs->super);
block = offset >> EXT2_BLOCK_SIZE_BITS(current_fs->super);
if (!current_fs->group_desc[(unsigned)group].bg_inode_table) {
com_err(argv[0], 0, "Inode table for group %lu is missing\n",
group);
return;
}
block_nr = current_fs->group_desc[(unsigned)group].bg_inode_table +
block;
offset &= (EXT2_BLOCK_SIZE(current_fs->super) - 1);
printf("Inode %d is part of block group %lu\n"
"\tlocated at block %lu, offset 0x%04lx\n", ino, group,
block_nr, offset);
}
void do_set_current_time(int argc, char *argv[])
{
time_t now;
if (common_args_process(argc, argv, 2, 2, argv[0],
"<time>", 0))
return;
now = string_to_time(argv[1]);
if (now == ((time_t) -1)) {
com_err(argv[0], 0, "Couldn't parse argument as a time: %s\n",
argv[1]);
return;
} else {
printf("Setting current time to %s\n", time_to_string(now));
current_fs->now = now;
}
}
static int find_supp_feature(__u32 *supp, int feature_type, char *name)
{
int compat, bit, ret;
unsigned int feature_mask;
if (name) {
if (feature_type == E2P_FS_FEATURE)
ret = e2p_string2feature(name, &compat, &feature_mask);
else
ret = e2p_jrnl_string2feature(name, &compat,
&feature_mask);
if (ret)
return ret;
if (!(supp[compat] & feature_mask))
return 1;
} else {
for (compat = 0; compat < 3; compat++) {
for (bit = 0, feature_mask = 1; bit < 32;
bit++, feature_mask <<= 1) {
if (supp[compat] & feature_mask) {
if (feature_type == E2P_FS_FEATURE)
fprintf(stdout, " %s",
e2p_feature2string(compat,
feature_mask));
else
fprintf(stdout, " %s",
e2p_jrnl_feature2string(compat,
feature_mask));
}
}
}
fprintf(stdout, "\n");
}
return 0;
}
void do_supported_features(int argc, char *argv[])
{
int ret;
__u32 supp[3] = { EXT2_LIB_FEATURE_COMPAT_SUPP,
EXT2_LIB_FEATURE_INCOMPAT_SUPP,
EXT2_LIB_FEATURE_RO_COMPAT_SUPP };
__u32 jrnl_supp[3] = { JFS_KNOWN_COMPAT_FEATURES,
JFS_KNOWN_INCOMPAT_FEATURES,
JFS_KNOWN_ROCOMPAT_FEATURES };
if (argc > 1) {
ret = find_supp_feature(supp, E2P_FS_FEATURE, argv[1]);
if (ret) {
ret = find_supp_feature(jrnl_supp, E2P_JOURNAL_FEATURE,
argv[1]);
}
if (ret)
com_err(argv[0], 0, "Unknown feature: %s\n", argv[1]);
else
fprintf(stdout, "Supported feature: %s\n", argv[1]);
} else {
fprintf(stdout, "Supported features:");
ret = find_supp_feature(supp, E2P_FS_FEATURE, NULL);
ret = find_supp_feature(jrnl_supp, E2P_JOURNAL_FEATURE, NULL);
}
}
static int source_file(const char *cmd_file, int sci_idx)
{
FILE *f;
char buf[256];
char *cp;
int exit_status = 0;
int retval;
if (strcmp(cmd_file, "-") == 0)
f = stdin;
else {
f = fopen(cmd_file, "r");
if (!f) {
perror(cmd_file);
exit(1);
}
}
fflush(stdout);
fflush(stderr);
setbuf(stdout, NULL);
setbuf(stderr, NULL);
while (!feof(f)) {
if (fgets(buf, sizeof(buf), f) == NULL)
break;
cp = strchr(buf, '\n');
if (cp)
*cp = 0;
cp = strchr(buf, '\r');
if (cp)
*cp = 0;
printf("debugfs: %s\n", buf);
retval = ss_execute_line(sci_idx, buf);
if (retval) {
ss_perror(sci_idx, retval, buf);
exit_status++;
}
}
if (f != stdin)
fclose(f);
return exit_status;
}
int main(int argc, char **argv)
{
int retval;
int sci_idx;
const char *usage = "Usage: %s [-b blocksize] [-s superblock] [-f cmd_file] [-R request] [-V] [[-w] [-c] device]";
int c;
int open_flags = EXT2_FLAG_SOFTSUPP_FEATURES;
char *request = 0;
int exit_status = 0;
char *cmd_file = 0;
blk_t superblock = 0;
blk_t blocksize = 0;
int catastrophic = 0;
char *data_filename = 0;
if (debug_prog_name == 0)
debug_prog_name = "debugfs";
add_error_table(&et_ext2_error_table);
fprintf (stderr, "%s %s (%s)\n", debug_prog_name,
E2FSPROGS_VERSION, E2FSPROGS_DATE);
while ((c = getopt (argc, argv, "iwcR:f:b:s:Vd:")) != EOF) {
switch (c) {
case 'R':
request = optarg;
break;
case 'f':
cmd_file = optarg;
break;
case 'd':
data_filename = optarg;
break;
case 'i':
open_flags |= EXT2_FLAG_IMAGE_FILE;
break;
case 'w':
open_flags |= EXT2_FLAG_RW;
break;
case 'b':
blocksize = parse_ulong(optarg, argv[0],
"block size", 0);
break;
case 's':
superblock = parse_ulong(optarg, argv[0],
"superblock number", 0);
break;
case 'c':
catastrophic = 1;
break;
case 'V':
/* Print version number and exit */
fprintf(stderr, "\tUsing %s\n",
error_message(EXT2_ET_BASE));
exit(0);
default:
com_err(argv[0], 0, usage, debug_prog_name);
return 1;
}
}
if (optind < argc)
open_filesystem(argv[optind], open_flags,
superblock, blocksize, catastrophic,
data_filename);
sci_idx = ss_create_invocation(debug_prog_name, "0.0", (char *) NULL,
&debug_cmds, &retval);
if (retval) {
ss_perror(sci_idx, retval, "creating invocation");
exit(1);
}
ss_get_readline(sci_idx);
(void) ss_add_request_table (sci_idx, &ss_std_requests, 1, &retval);
if (retval) {
ss_perror(sci_idx, retval, "adding standard requests");
exit (1);
}
if (extra_cmds)
ss_add_request_table (sci_idx, extra_cmds, 1, &retval);
if (retval) {
ss_perror(sci_idx, retval, "adding extra requests");
exit (1);
}
if (request) {
retval = 0;
retval = ss_execute_line(sci_idx, request);
if (retval) {
ss_perror(sci_idx, retval, request);
exit_status++;
}
} else if (cmd_file) {
exit_status = source_file(cmd_file, sci_idx);
} else {
ss_listen(sci_idx);
}
ss_delete_invocation(sci_idx);
if (current_fs)
close_filesystem();
remove_error_table(&et_ext2_error_table);
return exit_status;
}