blob: 93160c9a4dec1997058caccfa187d5d98cfab823 [file] [log] [blame]
/*
* tune2fs.c - Change the file system parameters on an ext2 file system
*
* Copyright (C) 1992, 1993, 1994 Remy Card <card@masi.ibp.fr>
* Laboratoire MASI, Institut Blaise Pascal
* Universite Pierre et Marie Curie (Paris VI)
*
* Copyright 1995, 1996, 1997, 1998, 1999, 2000 by Theodore Ts'o.
*
* %Begin-Header%
* This file may be redistributed under the terms of the GNU Public
* License.
* %End-Header%
*/
/*
* History:
* 93/06/01 - Creation
* 93/10/31 - Added the -c option to change the maximal mount counts
* 93/12/14 - Added -l flag to list contents of superblock
* M.J.E. Mol (marcel@duteca.et.tudelft.nl)
* F.W. ten Wolde (franky@duteca.et.tudelft.nl)
* 93/12/29 - Added the -e option to change errors behavior
* 94/02/27 - Ported to use the ext2fs library
* 94/03/06 - Added the checks interval from Uwe Ohse (uwe@tirka.gun.de)
*/
#define _XOPEN_SOURCE 600 /* for inclusion of strptime() */
#include "config.h"
#include <fcntl.h>
#include <grp.h>
#ifdef HAVE_GETOPT_H
#include <getopt.h>
#else
extern char *optarg;
extern int optind;
#endif
#include <pwd.h>
#include <stdio.h>
#ifdef HAVE_STDLIB_H
#include <stdlib.h>
#endif
#ifdef HAVE_STRINGS_H
#include <strings.h> /* for strcasecmp() */
#else
#define _BSD_SOURCE /* for inclusion of strcasecmp() via <string.h> */
#define _DEFAULT_SOURCE /* since glibc 2.20 _BSD_SOURCE is deprecated */
#endif
#include <string.h>
#include <time.h>
#include <unistd.h>
#include <sys/types.h>
#include <libgen.h>
#include <limits.h>
#include "ext2fs/ext2_fs.h"
#include "ext2fs/ext2fs.h"
#include "ext2fs/kernel-jbd.h"
#include "et/com_err.h"
#include "support/plausible.h"
#include "support/quotaio.h"
#include "uuid/uuid.h"
#include "e2p/e2p.h"
#include "util.h"
#include "blkid/blkid.h"
#include "../version.h"
#include "support/nls-enable.h"
#define QOPT_ENABLE (1)
#define QOPT_DISABLE (-1)
extern int ask_yn(const char *string, int def);
const char *program_name = "tune2fs";
char *device_name;
char *new_label, *new_last_mounted, *new_UUID;
char *io_options;
static int c_flag, C_flag, e_flag, f_flag, g_flag, i_flag, l_flag, L_flag;
static int m_flag, M_flag, Q_flag, r_flag, s_flag = -1, u_flag, U_flag, T_flag;
static int I_flag;
static int clear_mmp;
static time_t last_check_time;
static int print_label;
static int max_mount_count, mount_count, mount_flags;
static unsigned long interval;
static blk64_t reserved_blocks;
static double reserved_ratio;
static unsigned long resgid, resuid;
static unsigned short errors;
static int open_flag;
static char *features_cmd;
static char *mntopts_cmd;
static int stride, stripe_width;
static int stride_set, stripe_width_set;
static char *extended_cmd;
static unsigned long new_inode_size;
static char *ext_mount_opts;
static int quota_enable[MAXQUOTAS];
static int rewrite_checksums;
static int feature_64bit;
static int fsck_requested;
static char *undo_file;
int journal_size, journal_flags;
char *journal_device;
static blk64_t journal_location = ~0LL;
static struct list_head blk_move_list;
struct blk_move {
struct list_head list;
blk64_t old_loc;
blk64_t new_loc;
};
errcode_t ext2fs_run_ext3_journal(ext2_filsys *fs);
static const char *fsck_explain = N_("\nThis operation requires a freshly checked filesystem.\n");
static const char *please_fsck = N_("Please run e2fsck -f on the filesystem.\n");
static const char *please_dir_fsck =
N_("Please run e2fsck -fD on the filesystem.\n");
#ifdef CONFIG_BUILD_FINDFS
void do_findfs(int argc, char **argv);
#endif
#ifdef CONFIG_JBD_DEBUG /* Enabled by configure --enable-jbd-debug */
int journal_enable_debug = -1;
#endif
static void usage(void)
{
fprintf(stderr,
_("Usage: %s [-c max_mounts_count] [-e errors_behavior] [-f] "
"[-g group]\n"
"\t[-i interval[d|m|w]] [-j] [-J journal_options] [-l]\n"
"\t[-m reserved_blocks_percent] [-o [^]mount_options[,...]]\n"
"\t[-r reserved_blocks_count] [-u user] [-C mount_count]\n"
"\t[-L volume_label] [-M last_mounted_dir]\n"
"\t[-O [^]feature[,...]] [-Q quota_options]\n"
"\t[-E extended-option[,...]] [-T last_check_time] "
"[-U UUID]\n\t[-I new_inode_size] [-z undo_file] device\n"),
program_name);
exit(1);
}
static __u32 ok_features[3] = {
/* Compat */
EXT3_FEATURE_COMPAT_HAS_JOURNAL |
EXT2_FEATURE_COMPAT_DIR_INDEX,
/* Incompat */
EXT2_FEATURE_INCOMPAT_FILETYPE |
EXT3_FEATURE_INCOMPAT_EXTENTS |
EXT4_FEATURE_INCOMPAT_FLEX_BG |
EXT4_FEATURE_INCOMPAT_EA_INODE|
EXT4_FEATURE_INCOMPAT_MMP |
EXT4_FEATURE_INCOMPAT_64BIT |
EXT4_FEATURE_INCOMPAT_ENCRYPT |
EXT4_FEATURE_INCOMPAT_CSUM_SEED |
EXT4_FEATURE_INCOMPAT_LARGEDIR,
/* R/O compat */
EXT2_FEATURE_RO_COMPAT_LARGE_FILE |
EXT4_FEATURE_RO_COMPAT_HUGE_FILE|
EXT4_FEATURE_RO_COMPAT_DIR_NLINK|
EXT4_FEATURE_RO_COMPAT_EXTRA_ISIZE|
EXT4_FEATURE_RO_COMPAT_GDT_CSUM |
EXT2_FEATURE_RO_COMPAT_SPARSE_SUPER |
EXT4_FEATURE_RO_COMPAT_QUOTA |
EXT4_FEATURE_RO_COMPAT_METADATA_CSUM |
EXT4_FEATURE_RO_COMPAT_READONLY |
EXT4_FEATURE_RO_COMPAT_PROJECT
};
static __u32 clear_ok_features[3] = {
/* Compat */
EXT3_FEATURE_COMPAT_HAS_JOURNAL |
EXT2_FEATURE_COMPAT_RESIZE_INODE |
EXT2_FEATURE_COMPAT_DIR_INDEX,
/* Incompat */
EXT2_FEATURE_INCOMPAT_FILETYPE |
EXT4_FEATURE_INCOMPAT_FLEX_BG |
EXT4_FEATURE_INCOMPAT_MMP |
EXT4_FEATURE_INCOMPAT_64BIT |
EXT4_FEATURE_INCOMPAT_CSUM_SEED,
/* R/O compat */
EXT2_FEATURE_RO_COMPAT_LARGE_FILE |
EXT4_FEATURE_RO_COMPAT_HUGE_FILE|
EXT4_FEATURE_RO_COMPAT_DIR_NLINK|
EXT4_FEATURE_RO_COMPAT_EXTRA_ISIZE|
EXT4_FEATURE_RO_COMPAT_GDT_CSUM |
EXT4_FEATURE_RO_COMPAT_QUOTA |
EXT4_FEATURE_RO_COMPAT_PROJECT |
EXT4_FEATURE_RO_COMPAT_METADATA_CSUM |
EXT4_FEATURE_RO_COMPAT_READONLY
};
/**
* Try to get journal super block if any
*/
static int get_journal_sb(ext2_filsys jfs, char buf[SUPERBLOCK_SIZE])
{
int retval;
journal_superblock_t *jsb;
if (!ext2fs_has_feature_journal_dev(jfs->super)) {
return EXT2_ET_UNSUPP_FEATURE;
}
/* Get the journal superblock */
if ((retval = io_channel_read_blk64(jfs->io,
ext2fs_journal_sb_start(jfs->blocksize), -SUPERBLOCK_SIZE, buf))) {
com_err(program_name, retval, "%s",
_("while reading journal superblock"));
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))) {
fputs(_("Journal superblock not found!\n"), stderr);
return EXT2_ET_BAD_MAGIC;
}
return 0;
}
static __u8 *journal_user(__u8 uuid[UUID_SIZE], __u8 s_users[JFS_USERS_SIZE],
int nr_users)
{
int i;
for (i = 0; i < nr_users; i++) {
if (memcmp(uuid, &s_users[i * UUID_SIZE], UUID_SIZE) == 0)
return &s_users[i * UUID_SIZE];
}
return NULL;
}
/*
* Remove an external journal from the filesystem
*/
static int remove_journal_device(ext2_filsys fs)
{
char *journal_path;
ext2_filsys jfs;
char buf[SUPERBLOCK_SIZE] __attribute__ ((aligned(8)));
journal_superblock_t *jsb;
int i, nr_users;
errcode_t retval;
int commit_remove_journal = 0;
io_manager io_ptr;
if (f_flag)
commit_remove_journal = 1; /* force removal even if error */
uuid_unparse(fs->super->s_journal_uuid, buf);
journal_path = blkid_get_devname(NULL, "UUID", buf);
if (!journal_path) {
journal_path =
ext2fs_find_block_device(fs->super->s_journal_dev);
if (!journal_path)
goto no_valid_journal;
}
#ifdef CONFIG_TESTIO_DEBUG
if (getenv("TEST_IO_FLAGS") || getenv("TEST_IO_BLOCK")) {
io_ptr = test_io_manager;
test_io_backing_manager = unix_io_manager;
} else
#endif
io_ptr = unix_io_manager;
retval = ext2fs_open(journal_path, EXT2_FLAG_RW|
EXT2_FLAG_JOURNAL_DEV_OK, 0,
fs->blocksize, io_ptr, &jfs);
if (retval) {
com_err(program_name, retval, "%s",
_("while trying to open external journal"));
goto no_valid_journal;
}
if ((retval = get_journal_sb(jfs, buf))) {
if (retval == EXT2_ET_UNSUPP_FEATURE)
fprintf(stderr, _("%s is not a journal device.\n"),
journal_path);
goto no_valid_journal;
}
jsb = (journal_superblock_t *) buf;
/* Find the filesystem UUID */
nr_users = ntohl(jsb->s_nr_users);
if (!journal_user(fs->super->s_uuid, jsb->s_users, nr_users)) {
fputs(_("Filesystem's UUID not found on journal device.\n"),
stderr);
commit_remove_journal = 1;
goto no_valid_journal;
}
nr_users--;
for (i = 0; i < nr_users; i++)
memcpy(&jsb->s_users[i * 16], &jsb->s_users[(i + 1) * 16], 16);
jsb->s_nr_users = htonl(nr_users);
/* Write back the journal superblock */
retval = io_channel_write_blk64(jfs->io,
ext2fs_journal_sb_start(fs->blocksize),
-SUPERBLOCK_SIZE, buf);
if (retval) {
com_err(program_name, retval,
"while writing journal superblock.");
goto no_valid_journal;
}
commit_remove_journal = 1;
no_valid_journal:
if (commit_remove_journal == 0) {
fputs(_("Cannot locate journal device. It was NOT removed\n"
"Use -f option to remove missing journal device.\n"),
stderr);
return 1;
}
fs->super->s_journal_dev = 0;
memset(fs->super->s_jnl_blocks, 0, sizeof(fs->super->s_jnl_blocks));
uuid_clear(fs->super->s_journal_uuid);
ext2fs_mark_super_dirty(fs);
fputs(_("Journal removed\n"), stdout);
free(journal_path);
return 0;
}
/* Helper function for remove_journal_inode */
static int release_blocks_proc(ext2_filsys fs, blk64_t *blocknr,
e2_blkcnt_t blockcnt EXT2FS_ATTR((unused)),
blk64_t ref_block EXT2FS_ATTR((unused)),
int ref_offset EXT2FS_ATTR((unused)),
void *private EXT2FS_ATTR((unused)))
{
blk64_t block;
int group;
block = *blocknr;
ext2fs_unmark_block_bitmap2(fs->block_map, block);
group = ext2fs_group_of_blk2(fs, block);
ext2fs_bg_free_blocks_count_set(fs, group, ext2fs_bg_free_blocks_count(fs, group) + 1);
ext2fs_group_desc_csum_set(fs, group);
ext2fs_free_blocks_count_add(fs->super, EXT2FS_CLUSTER_RATIO(fs));
return 0;
}
/*
* Remove the journal inode from the filesystem
*/
static errcode_t remove_journal_inode(ext2_filsys fs)
{
struct ext2_inode inode;
errcode_t retval;
ino_t ino = fs->super->s_journal_inum;
retval = ext2fs_read_inode(fs, ino, &inode);
if (retval) {
com_err(program_name, retval, "%s",
_("while reading journal inode"));
return retval;
}
if (ino == EXT2_JOURNAL_INO) {
retval = ext2fs_read_bitmaps(fs);
if (retval) {
com_err(program_name, retval, "%s",
_("while reading bitmaps"));
return retval;
}
retval = ext2fs_block_iterate3(fs, ino,
BLOCK_FLAG_READ_ONLY, NULL,
release_blocks_proc, NULL);
if (retval) {
com_err(program_name, retval, "%s",
_("while clearing journal inode"));
return retval;
}
memset(&inode, 0, sizeof(inode));
ext2fs_mark_bb_dirty(fs);
fs->flags &= ~EXT2_FLAG_SUPER_ONLY;
} else
inode.i_flags &= ~EXT2_IMMUTABLE_FL;
retval = ext2fs_write_inode(fs, ino, &inode);
if (retval) {
com_err(program_name, retval, "%s",
_("while writing journal inode"));
return retval;
}
fs->super->s_journal_inum = 0;
memset(fs->super->s_jnl_blocks, 0, sizeof(fs->super->s_jnl_blocks));
ext2fs_mark_super_dirty(fs);
return 0;
}
/*
* Update the default mount options
*/
static int update_mntopts(ext2_filsys fs, char *mntopts)
{
struct ext2_super_block *sb = fs->super;
if (e2p_edit_mntopts(mntopts, &sb->s_default_mount_opts, ~0)) {
fprintf(stderr, _("Invalid mount option set: %s\n"),
mntopts);
return 1;
}
ext2fs_mark_super_dirty(fs);
return 0;
}
static void check_fsck_needed(ext2_filsys fs, const char *prompt)
{
/* Refuse to modify anything but a freshly checked valid filesystem. */
if (!(fs->super->s_state & EXT2_VALID_FS) ||
(fs->super->s_state & EXT2_ERROR_FS) ||
(fs->super->s_lastcheck < fs->super->s_mtime)) {
puts(_(fsck_explain));
puts(_(please_fsck));
if (mount_flags & EXT2_MF_READONLY)
printf("%s", _("(and reboot afterwards!)\n"));
exit(1);
}
/* Give the admin a few seconds to bail out of a dangerous op. */
if (!getenv("TUNE2FS_FORCE_PROMPT") && (!isatty(0) || !isatty(1)))
return;
puts(prompt);
proceed_question(5);
}
static void request_dir_fsck_afterwards(ext2_filsys fs)
{
static int requested;
if (requested++)
return;
fsck_requested++;
fs->super->s_state &= ~EXT2_VALID_FS;
puts(_(fsck_explain));
puts(_(please_dir_fsck));
if (mount_flags & EXT2_MF_READONLY)
printf("%s", _("(and reboot afterwards!)\n"));
}
static void request_fsck_afterwards(ext2_filsys fs)
{
static int requested = 0;
if (requested++)
return;
fsck_requested++;
fs->super->s_state &= ~EXT2_VALID_FS;
printf("\n%s\n", _(please_fsck));
if (mount_flags & EXT2_MF_READONLY)
printf("%s", _("(and reboot afterwards!)\n"));
}
static void convert_64bit(ext2_filsys fs, int direction)
{
/*
* Is resize2fs going to demand a fsck run? Might as well tell the
* user now.
*/
if (!fsck_requested &&
((fs->super->s_state & EXT2_ERROR_FS) ||
!(fs->super->s_state & EXT2_VALID_FS) ||
fs->super->s_lastcheck < fs->super->s_mtime))
request_fsck_afterwards(fs);
if (fsck_requested)
fprintf(stderr, _("After running e2fsck, please run `resize2fs %s %s"),
direction > 0 ? "-b" : "-s", fs->device_name);
else
fprintf(stderr, _("Please run `resize2fs %s %s"),
direction > 0 ? "-b" : "-s", fs->device_name);
if (undo_file)
fprintf(stderr, _(" -z \"%s\""), undo_file);
if (direction > 0)
fprintf(stderr, _("' to enable 64-bit mode.\n"));
else
fprintf(stderr, _("' to disable 64-bit mode.\n"));
}
/* Rewrite extents */
static errcode_t rewrite_extents(ext2_filsys fs, ext2_ino_t ino,
struct ext2_inode *inode)
{
ext2_extent_handle_t handle;
struct ext2fs_extent extent;
errcode_t errcode;
struct ext2_extent_info info;
if (!(inode->i_flags & EXT4_EXTENTS_FL) ||
!ext2fs_has_feature_metadata_csum(fs->super))
return 0;
errcode = ext2fs_extent_open(fs, ino, &handle);
if (errcode)
return errcode;
errcode = ext2fs_extent_get(handle, EXT2_EXTENT_ROOT, &extent);
if (errcode)
goto out;
do {
errcode = ext2fs_extent_get_info(handle, &info);
if (errcode)
break;
/*
* If this is the first extent in an extent block that we
* haven't visited, rewrite the extent to force the ETB
* checksum to be rewritten.
*/
if (info.curr_entry == 1 && info.curr_level != 0 &&
!(extent.e_flags & EXT2_EXTENT_FLAGS_SECOND_VISIT)) {
errcode = ext2fs_extent_replace(handle, 0, &extent);
if (errcode)
break;
}
/* Skip to the end of a block of leaf nodes */
if (extent.e_flags & EXT2_EXTENT_FLAGS_LEAF) {
errcode = ext2fs_extent_get(handle,
EXT2_EXTENT_LAST_SIB,
&extent);
if (errcode)
break;
}
errcode = ext2fs_extent_get(handle, EXT2_EXTENT_NEXT, &extent);
} while (errcode == 0);
out:
/* Ok if we run off the end */
if (errcode == EXT2_ET_EXTENT_NO_NEXT)
errcode = 0;
ext2fs_extent_free(handle);
return errcode;
}
/*
* Rewrite directory blocks with checksums
*/
struct rewrite_dir_context {
char *buf;
errcode_t errcode;
ext2_ino_t dir;
int is_htree;
};
static int rewrite_dir_block(ext2_filsys fs,
blk64_t *blocknr,
e2_blkcnt_t blockcnt EXT2FS_ATTR((unused)),
blk64_t ref_block EXT2FS_ATTR((unused)),
int ref_offset EXT2FS_ATTR((unused)),
void *priv_data)
{
struct ext2_dx_countlimit *dcl = NULL;
struct rewrite_dir_context *ctx = priv_data;
int dcl_offset, changed = 0;
ctx->errcode = ext2fs_read_dir_block4(fs, *blocknr, ctx->buf, 0,
ctx->dir);
if (ctx->errcode)
return BLOCK_ABORT;
/* if htree node... */
if (ctx->is_htree)
ext2fs_get_dx_countlimit(fs, (struct ext2_dir_entry *)ctx->buf,
&dcl, &dcl_offset);
if (dcl) {
if (!ext2fs_has_feature_metadata_csum(fs->super)) {
/* Ensure limit is the max size */
int max_entries = (fs->blocksize - dcl_offset) /
sizeof(struct ext2_dx_entry);
if (ext2fs_le16_to_cpu(dcl->limit) != max_entries) {
changed = 1;
dcl->limit = ext2fs_cpu_to_le16(max_entries);
}
} else {
/* If htree block is full then rebuild the dir */
if (ext2fs_le16_to_cpu(dcl->count) ==
ext2fs_le16_to_cpu(dcl->limit)) {
request_dir_fsck_afterwards(fs);
return 0;
}
/*
* Ensure dcl->limit is small enough to leave room for
* the checksum tail.
*/
int max_entries = (fs->blocksize - (dcl_offset +
sizeof(struct ext2_dx_tail))) /
sizeof(struct ext2_dx_entry);
if (ext2fs_le16_to_cpu(dcl->limit) != max_entries)
dcl->limit = ext2fs_cpu_to_le16(max_entries);
/* Always rewrite checksum */
changed = 1;
}
} else {
unsigned int rec_len, name_size;
char *top = ctx->buf + fs->blocksize;
struct ext2_dir_entry *de = (struct ext2_dir_entry *)ctx->buf;
struct ext2_dir_entry *last_de = NULL, *penultimate_de = NULL;
/* Find last and penultimate dirent */
while ((char *)de < top) {
penultimate_de = last_de;
last_de = de;
ctx->errcode = ext2fs_get_rec_len(fs, de, &rec_len);
if (!ctx->errcode && !rec_len)
ctx->errcode = EXT2_ET_DIR_CORRUPTED;
if (ctx->errcode)
return BLOCK_ABORT;
de = (struct ext2_dir_entry *)(((char *)de) + rec_len);
}
ctx->errcode = ext2fs_get_rec_len(fs, last_de, &rec_len);
if (ctx->errcode)
return BLOCK_ABORT;
name_size = ext2fs_dirent_name_len(last_de);
if (!ext2fs_has_feature_metadata_csum(fs->super)) {
if (!penultimate_de)
return 0;
if (last_de->inode ||
name_size ||
rec_len != sizeof(struct ext2_dir_entry_tail))
return 0;
/*
* The last dirent is unused and the right length to
* have stored a checksum. Erase it.
*/
ctx->errcode = ext2fs_get_rec_len(fs, penultimate_de,
&rec_len);
if (!rec_len)
ctx->errcode = EXT2_ET_DIR_CORRUPTED;
if (ctx->errcode)
return BLOCK_ABORT;
ext2fs_set_rec_len(fs, rec_len +
sizeof(struct ext2_dir_entry_tail),
penultimate_de);
changed = 1;
} else {
unsigned csum_size = sizeof(struct ext2_dir_entry_tail);
struct ext2_dir_entry_tail *t;
/*
* If the last dirent looks like the tail, just update
* the checksum.
*/
if (!last_de->inode &&
rec_len == csum_size) {
t = (struct ext2_dir_entry_tail *)last_de;
t->det_reserved_name_len =
EXT2_DIR_NAME_LEN_CSUM;
changed = 1;
goto out;
}
if (name_size & 3)
name_size = (name_size & ~3) + 4;
/* If there's not enough space for the tail, e2fsck */
if (rec_len <= (8 + name_size + csum_size)) {
request_dir_fsck_afterwards(fs);
return 0;
}
/* Shorten that last de and insert the tail */
ext2fs_set_rec_len(fs, rec_len - csum_size, last_de);
t = EXT2_DIRENT_TAIL(ctx->buf, fs->blocksize);
ext2fs_initialize_dirent_tail(fs, t);
/* Always update checksum */
changed = 1;
}
}
out:
if (!changed)
return 0;
ctx->errcode = ext2fs_write_dir_block4(fs, *blocknr, ctx->buf,
0, ctx->dir);
if (ctx->errcode)
return BLOCK_ABORT;
return 0;
}
static errcode_t rewrite_directory(ext2_filsys fs, ext2_ino_t dir,
struct ext2_inode *inode)
{
errcode_t retval;
struct rewrite_dir_context ctx;
retval = ext2fs_get_mem(fs->blocksize, &ctx.buf);
if (retval)
return retval;
ctx.is_htree = (inode->i_flags & EXT2_INDEX_FL);
ctx.dir = dir;
ctx.errcode = 0;
retval = ext2fs_block_iterate3(fs, dir, BLOCK_FLAG_READ_ONLY |
BLOCK_FLAG_DATA_ONLY,
0, rewrite_dir_block, &ctx);
ext2fs_free_mem(&ctx.buf);
if (retval)
return retval;
return ctx.errcode;
}
/*
* Context information that does not change across rewrite_one_inode()
* invocations.
*/
struct rewrite_context {
ext2_filsys fs;
struct ext2_inode *zero_inode;
char *ea_buf;
int inode_size;
};
#define fatal_err(code, args...) \
do { \
com_err(__func__, code, args); \
exit(1); \
} while (0);
static void update_ea_inode_hash(struct rewrite_context *ctx, ext2_ino_t ino,
struct ext2_inode *inode)
{
errcode_t retval;
ext2_file_t file;
__u32 hash;
retval = ext2fs_file_open(ctx->fs, ino, 0, &file);
if (retval)
fatal_err(retval, "open ea_inode");
retval = ext2fs_file_read(file, ctx->ea_buf, inode->i_size,
NULL);
if (retval)
fatal_err(retval, "read ea_inode");
retval = ext2fs_file_close(file);
if (retval)
fatal_err(retval, "close ea_inode");
hash = ext2fs_crc32c_le(ctx->fs->csum_seed, ctx->ea_buf, inode->i_size);
ext2fs_set_ea_inode_hash(inode, hash);
}
static int update_xattr_entry_hashes(ext2_filsys fs,
struct ext2_ext_attr_entry *entry,
struct ext2_ext_attr_entry *end)
{
int modified = 0;
errcode_t retval;
while (entry < end && !EXT2_EXT_IS_LAST_ENTRY(entry)) {
if (entry->e_value_inum) {
retval = ext2fs_ext_attr_hash_entry2(fs, entry, NULL,
&entry->e_hash);
if (retval)
fatal_err(retval, "hash ea_inode entry");
modified = 1;
}
entry = EXT2_EXT_ATTR_NEXT(entry);
}
return modified;
}
static void update_inline_xattr_hashes(struct rewrite_context *ctx,
struct ext2_inode_large *inode)
{
struct ext2_ext_attr_entry *start, *end;
__u32 *ea_magic;
if (inode->i_extra_isize == 0)
return;
if (inode->i_extra_isize & 3 ||
inode->i_extra_isize > ctx->inode_size - EXT2_GOOD_OLD_INODE_SIZE)
fatal_err(EXT2_ET_INODE_CORRUPTED, "bad i_extra_isize")
ea_magic = (__u32 *)((char *)inode + EXT2_GOOD_OLD_INODE_SIZE +
inode->i_extra_isize);
if (*ea_magic != EXT2_EXT_ATTR_MAGIC)
return;
start = (struct ext2_ext_attr_entry *)(ea_magic + 1);
end = (struct ext2_ext_attr_entry *)((char *)inode + ctx->inode_size);
update_xattr_entry_hashes(ctx->fs, start, end);
}
static void update_block_xattr_hashes(struct rewrite_context *ctx,
void *block_buf)
{
struct ext2_ext_attr_header *header;
struct ext2_ext_attr_entry *start, *end;
header = (struct ext2_ext_attr_header *)block_buf;
if (header->h_magic != EXT2_EXT_ATTR_MAGIC)
return;
start = (struct ext2_ext_attr_entry *)(header+1);
end = (struct ext2_ext_attr_entry *)(block_buf + ctx->fs->blocksize);
if (update_xattr_entry_hashes(ctx->fs, start, end))
ext2fs_ext_attr_block_rehash(header, end);
}
static void rewrite_one_inode(struct rewrite_context *ctx, ext2_ino_t ino,
struct ext2_inode *inode)
{
blk64_t file_acl_block;
errcode_t retval;
if (!ext2fs_test_inode_bitmap2(ctx->fs->inode_map, ino)) {
if (!memcmp(inode, ctx->zero_inode, ctx->inode_size))
return;
memset(inode, 0, ctx->inode_size);
}
if (inode->i_flags & EXT4_EA_INODE_FL)
update_ea_inode_hash(ctx, ino, inode);
if (ctx->inode_size != EXT2_GOOD_OLD_INODE_SIZE)
update_inline_xattr_hashes(ctx,
(struct ext2_inode_large *)inode);
retval = ext2fs_write_inode_full(ctx->fs, ino, inode, ctx->inode_size);
if (retval)
fatal_err(retval, "while writing inode");
retval = rewrite_extents(ctx->fs, ino, inode);
if (retval)
fatal_err(retval, "while rewriting extents");
if (LINUX_S_ISDIR(inode->i_mode) &&
ext2fs_inode_has_valid_blocks2(ctx->fs, inode)) {
retval = rewrite_directory(ctx->fs, ino, inode);
if (retval)
fatal_err(retval, "while rewriting directories");
}
file_acl_block = ext2fs_file_acl_block(ctx->fs, inode);
if (!file_acl_block)
return;
retval = ext2fs_read_ext_attr3(ctx->fs, file_acl_block, ctx->ea_buf,
ino);
if (retval)
fatal_err(retval, "while rewriting extended attribute");
update_block_xattr_hashes(ctx, ctx->ea_buf);
retval = ext2fs_write_ext_attr3(ctx->fs, file_acl_block, ctx->ea_buf,
ino);
if (retval)
fatal_err(retval, "while rewriting extended attribute");
}
/*
* Forcibly set checksums in all inodes.
*/
static void rewrite_inodes(ext2_filsys fs)
{
ext2_inode_scan scan;
errcode_t retval;
ext2_ino_t ino;
struct ext2_inode *inode;
int pass;
struct rewrite_context ctx = {
.fs = fs,
.inode_size = EXT2_INODE_SIZE(fs->super),
};
if (fs->super->s_creator_os == EXT2_OS_HURD)
return;
retval = ext2fs_get_mem(ctx.inode_size, &inode);
if (retval)
fatal_err(retval, "while allocating memory");
retval = ext2fs_get_memzero(ctx.inode_size, &ctx.zero_inode);
if (retval)
fatal_err(retval, "while allocating memory");
retval = ext2fs_get_mem(64 * 1024, &ctx.ea_buf);
if (retval)
fatal_err(retval, "while allocating memory");
/*
* Extended attribute inodes have a lookup hash that needs to be
* recalculated with the new csum_seed. Other inodes referencing xattr
* inodes need this value to be up to date. That's why we do two passes:
*
* pass 1: update xattr inodes to update their lookup hash as well as
* other checksums.
*
* pass 2: go over other inodes to update their checksums.
*/
if (ext2fs_has_feature_ea_inode(fs->super))
pass = 1;
else
pass = 2;
for (;pass <= 2; pass++) {
retval = ext2fs_open_inode_scan(fs, 0, &scan);
if (retval)
fatal_err(retval, "while opening inode scan");
do {
retval = ext2fs_get_next_inode_full(scan, &ino, inode,
ctx.inode_size);
if (retval)
fatal_err(retval, "while getting next inode");
if (!ino)
break;
if (((pass == 1) &&
(inode->i_flags & EXT4_EA_INODE_FL)) ||
((pass == 2) &&
!(inode->i_flags & EXT4_EA_INODE_FL)))
rewrite_one_inode(&ctx, ino, inode);
} while (ino);
ext2fs_close_inode_scan(scan);
}
ext2fs_free_mem(&ctx.zero_inode);
ext2fs_free_mem(&ctx.ea_buf);
ext2fs_free_mem(&inode);
}
static void rewrite_metadata_checksums(ext2_filsys fs)
{
errcode_t retval;
dgrp_t i;
fs->flags |= EXT2_FLAG_IGNORE_CSUM_ERRORS;
ext2fs_init_csum_seed(fs);
for (i = 0; i < fs->group_desc_count; i++)
ext2fs_group_desc_csum_set(fs, i);
retval = ext2fs_read_bitmaps(fs);
if (retval)
fatal_err(retval, "while reading bitmaps");
rewrite_inodes(fs);
ext2fs_mark_ib_dirty(fs);
ext2fs_mark_bb_dirty(fs);
ext2fs_mmp_update2(fs, 1);
fs->flags &= ~EXT2_FLAG_SUPER_ONLY;
fs->flags &= ~EXT2_FLAG_IGNORE_CSUM_ERRORS;
if (ext2fs_has_feature_metadata_csum(fs->super))
fs->super->s_checksum_type = EXT2_CRC32C_CHKSUM;
else
fs->super->s_checksum_type = 0;
ext2fs_mark_super_dirty(fs);
}
static void enable_uninit_bg(ext2_filsys fs)
{
struct ext2_group_desc *gd;
dgrp_t i;
for (i = 0; i < fs->group_desc_count; i++) {
gd = ext2fs_group_desc(fs, fs->group_desc, i);
gd->bg_itable_unused = 0;
gd->bg_flags = EXT2_BG_INODE_ZEROED;
ext2fs_group_desc_csum_set(fs, i);
}
fs->flags &= ~EXT2_FLAG_SUPER_ONLY;
}
static errcode_t zero_empty_inodes(ext2_filsys fs)
{
int length = EXT2_INODE_SIZE(fs->super);
struct ext2_inode *inode = NULL;
ext2_inode_scan scan;
errcode_t retval;
ext2_ino_t ino;
retval = ext2fs_open_inode_scan(fs, 0, &scan);
if (retval)
goto out;
retval = ext2fs_get_mem(length, &inode);
if (retval)
goto out;
do {
retval = ext2fs_get_next_inode_full(scan, &ino, inode, length);
if (retval)
goto out;
if (!ino)
break;
if (!ext2fs_test_inode_bitmap2(fs->inode_map, ino)) {
memset(inode, 0, length);
retval = ext2fs_write_inode_full(fs, ino, inode,
length);
if (retval)
goto out;
}
} while (1);
out:
ext2fs_free_mem(&inode);
ext2fs_close_inode_scan(scan);
return retval;
}
static errcode_t disable_uninit_bg(ext2_filsys fs, __u32 csum_feature_flag)
{
struct ext2_group_desc *gd;
dgrp_t i;
errcode_t retval;
blk64_t b, c, d;
/* Load bitmaps to ensure that the uninit ones get written out */
fs->super->s_feature_ro_compat |= csum_feature_flag;
retval = ext2fs_read_bitmaps(fs);
fs->super->s_feature_ro_compat &= ~csum_feature_flag;
if (retval) {
com_err("disable_uninit_bg", retval,
"while reading bitmaps");
request_fsck_afterwards(fs);
return retval;
}
ext2fs_mark_ib_dirty(fs);
ext2fs_mark_bb_dirty(fs);
/* If we're only turning off uninit_bg, zero the inodes */
if (csum_feature_flag == EXT4_FEATURE_RO_COMPAT_GDT_CSUM) {
retval = zero_empty_inodes(fs);
if (retval) {
com_err("disable_uninit_bg", retval,
"while zeroing unused inodes");
request_fsck_afterwards(fs);
return retval;
}
}
/* The bbitmap is zeroed; we must mark group metadata blocks in use */
for (i = 0; i < fs->group_desc_count; i++) {
b = ext2fs_block_bitmap_loc(fs, i);
ext2fs_mark_block_bitmap2(fs->block_map, b);
b = ext2fs_inode_bitmap_loc(fs, i);
ext2fs_mark_block_bitmap2(fs->block_map, b);
retval = ext2fs_super_and_bgd_loc2(fs, i, &b, &c, &d, NULL);
if (retval == 0 && b)
ext2fs_mark_block_bitmap2(fs->block_map, b);
if (retval == 0 && c)
ext2fs_mark_block_bitmap2(fs->block_map, c);
if (retval == 0 && d)
ext2fs_mark_block_bitmap2(fs->block_map, d);
if (retval) {
com_err("disable_uninit_bg", retval,
"while initializing block bitmaps");
request_fsck_afterwards(fs);
}
gd = ext2fs_group_desc(fs, fs->group_desc, i);
gd->bg_itable_unused = 0;
gd->bg_flags = 0;
ext2fs_group_desc_csum_set(fs, i);
}
fs->flags &= ~EXT2_FLAG_SUPER_ONLY;
ext2fs_mark_super_dirty(fs);
return 0;
}
static void
try_confirm_csum_seed_support(void)
{
if (access("/sys/fs/ext4/features/metadata_csum_seed", R_OK))
fputs(_("WARNING: Could not confirm kernel support for "
"metadata_csum_seed.\n This requires Linux >= "
"v4.4.\n"), stderr);
}
/*
* Update the feature set as provided by the user.
*/
static int update_feature_set(ext2_filsys fs, char *features)
{
struct ext2_super_block *sb = fs->super;
__u32 old_features[3];
int type_err;
unsigned int mask_err;
errcode_t err;
enum quota_type qtype;
#define FEATURE_ON(type, mask) (!(old_features[(type)] & (mask)) && \
((&sb->s_feature_compat)[(type)] & (mask)))
#define FEATURE_OFF(type, mask) ((old_features[(type)] & (mask)) && \
!((&sb->s_feature_compat)[(type)] & (mask)))
#define FEATURE_CHANGED(type, mask) ((mask) & \
(old_features[(type)] ^ (&sb->s_feature_compat)[(type)]))
old_features[E2P_FEATURE_COMPAT] = sb->s_feature_compat;
old_features[E2P_FEATURE_INCOMPAT] = sb->s_feature_incompat;
old_features[E2P_FEATURE_RO_INCOMPAT] = sb->s_feature_ro_compat;
if (e2p_edit_feature2(features, &sb->s_feature_compat,
ok_features, clear_ok_features,
&type_err, &mask_err)) {
if (!mask_err)
fprintf(stderr,
_("Invalid filesystem option set: %s\n"),
features);
else if (type_err & E2P_FEATURE_NEGATE_FLAG)
fprintf(stderr, _("Clearing filesystem feature '%s' "
"not supported.\n"),
e2p_feature2string(type_err &
E2P_FEATURE_TYPE_MASK,
mask_err));
else
fprintf(stderr, _("Setting filesystem feature '%s' "
"not supported.\n"),
e2p_feature2string(type_err, mask_err));
return 1;
}
if (FEATURE_OFF(E2P_FEATURE_COMPAT, EXT3_FEATURE_COMPAT_HAS_JOURNAL)) {
if ((mount_flags & EXT2_MF_MOUNTED) &&
!(mount_flags & EXT2_MF_READONLY)) {
fputs(_("The has_journal feature may only be "
"cleared when the filesystem is\n"
"unmounted or mounted "
"read-only.\n"), stderr);
return 1;
}
if (ext2fs_has_feature_journal_needs_recovery(sb) &&
f_flag < 2) {
fputs(_("The needs_recovery flag is set. "
"Please run e2fsck before clearing\n"
"the has_journal flag.\n"), stderr);
return 1;
}
if (sb->s_journal_inum) {
if (remove_journal_inode(fs))
return 1;
}
if (sb->s_journal_dev) {
if (remove_journal_device(fs))
return 1;
}
}
if (FEATURE_ON(E2P_FEATURE_RO_INCOMPAT,
EXT2_FEATURE_RO_COMPAT_SPARSE_SUPER)) {
if (ext2fs_has_feature_meta_bg(sb)) {
fputs(_("Setting filesystem feature 'sparse_super' "
"not supported\nfor filesystems with "
"the meta_bg feature enabled.\n"),
stderr);
return 1;
}
}
if (FEATURE_ON(E2P_FEATURE_INCOMPAT, EXT4_FEATURE_INCOMPAT_MMP)) {
int error;
if ((mount_flags & EXT2_MF_MOUNTED) ||
(mount_flags & EXT2_MF_READONLY)) {
fputs(_("The multiple mount protection feature can't\n"
"be set if the filesystem is mounted or\n"
"read-only.\n"), stderr);
return 1;
}
error = ext2fs_mmp_init(fs);
if (error) {
fputs(_("\nError while enabling multiple mount "
"protection feature."), stderr);
return 1;
}
/*
* We want to update group desc with the new free blocks count
*/
fs->flags &= ~EXT2_FLAG_SUPER_ONLY;
printf(_("Multiple mount protection has been enabled "
"with update interval %ds.\n"),
sb->s_mmp_update_interval);
}
if (FEATURE_OFF(E2P_FEATURE_INCOMPAT, EXT4_FEATURE_INCOMPAT_MMP)) {
int error;
if (mount_flags & EXT2_MF_READONLY) {
fputs(_("The multiple mount protection feature cannot\n"
"be disabled if the filesystem is readonly.\n"),
stderr);
return 1;
}
error = ext2fs_read_bitmaps(fs);
if (error) {
fputs(_("Error while reading bitmaps\n"), stderr);
return 1;
}
error = ext2fs_mmp_read(fs, sb->s_mmp_block, NULL);
if (error) {
struct mmp_struct *mmp_cmp = fs->mmp_cmp;
if (error == EXT2_ET_MMP_MAGIC_INVALID)
printf(_("Magic number in MMP block does not "
"match. expected: %x, actual: %x\n"),
EXT4_MMP_MAGIC, mmp_cmp->mmp_magic);
else
com_err(program_name, error, "%s",
_("while reading MMP block."));
goto mmp_error;
}
/* We need to force out the group descriptors as well */
fs->flags &= ~EXT2_FLAG_SUPER_ONLY;
ext2fs_block_alloc_stats2(fs, sb->s_mmp_block, -1);
mmp_error:
sb->s_mmp_block = 0;
sb->s_mmp_update_interval = 0;
}
if (FEATURE_ON(E2P_FEATURE_COMPAT, EXT3_FEATURE_COMPAT_HAS_JOURNAL)) {
/*
* If adding a journal flag, let the create journal
* code below handle setting the flag and creating the
* journal. We supply a default size if necessary.
*/
if (!journal_size)
journal_size = -1;
ext2fs_clear_feature_journal(sb);
}
if (FEATURE_ON(E2P_FEATURE_COMPAT, EXT2_FEATURE_COMPAT_DIR_INDEX)) {
if (!sb->s_def_hash_version)
sb->s_def_hash_version = EXT2_HASH_HALF_MD4;
if (uuid_is_null((unsigned char *) sb->s_hash_seed))
uuid_generate((unsigned char *) sb->s_hash_seed);
}
if (FEATURE_OFF(E2P_FEATURE_INCOMPAT, EXT4_FEATURE_INCOMPAT_FLEX_BG)) {
if (ext2fs_check_desc(fs)) {
fputs(_("Clearing the flex_bg flag would "
"cause the the filesystem to be\n"
"inconsistent.\n"), stderr);
return 1;
}
}
if (FEATURE_OFF(E2P_FEATURE_RO_INCOMPAT,
EXT4_FEATURE_RO_COMPAT_HUGE_FILE)) {
if ((mount_flags & EXT2_MF_MOUNTED) &&
!(mount_flags & EXT2_MF_READONLY)) {
fputs(_("The huge_file feature may only be "
"cleared when the filesystem is\n"
"unmounted or mounted "
"read-only.\n"), stderr);
return 1;
}
}
if (FEATURE_ON(E2P_FEATURE_RO_INCOMPAT,
EXT4_FEATURE_RO_COMPAT_METADATA_CSUM)) {
check_fsck_needed(fs,
_("Enabling checksums could take some time."));
if (mount_flags & EXT2_MF_MOUNTED) {
fputs(_("Cannot enable metadata_csum on a mounted "
"filesystem!\n"), stderr);
exit(1);
}
if (!ext2fs_has_feature_extents(fs->super))
printf("%s",
_("Extents are not enabled. The file extent "
"tree can be checksummed, whereas block maps "
"cannot. Not enabling extents reduces the "
"coverage of metadata checksumming. "
"Re-run with -O extent to rectify.\n"));
if (!ext2fs_has_feature_64bit(fs->super))
printf("%s",
_("64-bit filesystem support is not enabled. "
"The larger fields afforded by this feature "
"enable full-strength checksumming. "
"Run resize2fs -b to rectify.\n"));
rewrite_checksums = 1;
/* metadata_csum supersedes uninit_bg */
ext2fs_clear_feature_gdt_csum(fs->super);
/* if uninit_bg was previously off, rewrite group desc */
if (!(old_features[E2P_FEATURE_RO_INCOMPAT] &
EXT4_FEATURE_RO_COMPAT_GDT_CSUM))
enable_uninit_bg(fs);
/*
* Since metadata_csum supersedes uninit_bg, pretend like
* uninit_bg has been off all along.
*/
old_features[E2P_FEATURE_RO_INCOMPAT] &=
~EXT4_FEATURE_RO_COMPAT_GDT_CSUM;
}
if (FEATURE_OFF(E2P_FEATURE_RO_INCOMPAT,
EXT4_FEATURE_RO_COMPAT_METADATA_CSUM)) {
__u32 test_features[3];
check_fsck_needed(fs,
_("Disabling checksums could take some time."));
if (mount_flags & EXT2_MF_MOUNTED) {
fputs(_("Cannot disable metadata_csum on a mounted "
"filesystem!\n"), stderr);
exit(1);
}
rewrite_checksums = 1;
/* Enable uninit_bg unless the user expressly turned it off */
memcpy(test_features, old_features, sizeof(test_features));
test_features[E2P_FEATURE_RO_INCOMPAT] |=
EXT4_FEATURE_RO_COMPAT_GDT_CSUM;
e2p_edit_feature2(features, test_features, ok_features,
clear_ok_features, NULL, NULL);
if (test_features[E2P_FEATURE_RO_INCOMPAT] &
EXT4_FEATURE_RO_COMPAT_GDT_CSUM)
ext2fs_set_feature_gdt_csum(fs->super);
/*
* If we're turning off metadata_csum and not turning on
* uninit_bg, rewrite group desc.
*/
if (!ext2fs_has_feature_gdt_csum(fs->super)) {
err = disable_uninit_bg(fs,
EXT4_FEATURE_RO_COMPAT_METADATA_CSUM);
if (err)
return 1;
} else
/*
* metadata_csum previously provided uninit_bg, so if
* we're also setting the uninit_bg feature bit,
* pretend like it was previously enabled. Checksums
* will be rewritten with crc16 later.
*/
old_features[E2P_FEATURE_RO_INCOMPAT] |=
EXT4_FEATURE_RO_COMPAT_GDT_CSUM;
fs->super->s_checksum_seed = 0;
ext2fs_clear_feature_csum_seed(fs->super);
}
if (FEATURE_ON(E2P_FEATURE_RO_INCOMPAT,
EXT4_FEATURE_RO_COMPAT_GDT_CSUM)) {
/* Do not enable uninit_bg when metadata_csum enabled */
if (ext2fs_has_feature_metadata_csum(fs->super))
ext2fs_clear_feature_gdt_csum(fs->super);
else
enable_uninit_bg(fs);
}
if (FEATURE_OFF(E2P_FEATURE_RO_INCOMPAT,
EXT4_FEATURE_RO_COMPAT_GDT_CSUM)) {
err = disable_uninit_bg(fs,
EXT4_FEATURE_RO_COMPAT_GDT_CSUM);
if (err)
return 1;
}
/*
* We don't actually toggle 64bit; resize2fs does that. But this
* must come after the metadata_csum feature_on so that it won't
* complain about the lack of 64bit.
*/
if (FEATURE_ON(E2P_FEATURE_INCOMPAT,
EXT4_FEATURE_INCOMPAT_64BIT)) {
if (mount_flags & EXT2_MF_MOUNTED) {
fprintf(stderr, _("Cannot enable 64-bit mode "
"while mounted!\n"));
exit(1);
}
ext2fs_clear_feature_64bit(sb);
feature_64bit = 1;
}
if (FEATURE_OFF(E2P_FEATURE_INCOMPAT,
EXT4_FEATURE_INCOMPAT_64BIT)) {
if (mount_flags & EXT2_MF_MOUNTED) {
fprintf(stderr, _("Cannot disable 64-bit mode "
"while mounted!\n"));
exit(1);
}
ext2fs_set_feature_64bit(sb);
feature_64bit = -1;
}
if (FEATURE_ON(E2P_FEATURE_RO_INCOMPAT,
EXT4_FEATURE_RO_COMPAT_QUOTA)) {
/*
* Set the Q_flag here and handle the quota options in the code
* below.
*/
if (!Q_flag) {
Q_flag = 1;
/* Enable usr/grp quota by default */
for (qtype = 0; qtype < MAXQUOTAS; qtype++) {
if (qtype != PRJQUOTA)
quota_enable[qtype] = QOPT_ENABLE;
else
quota_enable[qtype] = QOPT_DISABLE;
}
}
ext2fs_clear_feature_quota(sb);
}
if (FEATURE_ON(E2P_FEATURE_RO_INCOMPAT,
EXT4_FEATURE_RO_COMPAT_PROJECT)) {
if (fs->super->s_inode_size == EXT2_GOOD_OLD_INODE_SIZE) {
fprintf(stderr, _("Cannot enable project feature; "
"inode size too small.\n"));
exit(1);
}
Q_flag = 1;
quota_enable[PRJQUOTA] = QOPT_ENABLE;
}
if (FEATURE_OFF(E2P_FEATURE_RO_INCOMPAT,
EXT4_FEATURE_RO_COMPAT_PROJECT)) {
Q_flag = 1;
quota_enable[PRJQUOTA] = QOPT_DISABLE;
}
if (FEATURE_OFF(E2P_FEATURE_RO_INCOMPAT,
EXT4_FEATURE_RO_COMPAT_QUOTA)) {
/*
* Set the Q_flag here and handle the quota options in the code
* below.
*/
if (Q_flag)
fputs(_("\nWarning: '^quota' option overrides '-Q'"
"arguments.\n"), stderr);
Q_flag = 1;
/* Disable all quota by default */
for (qtype = 0; qtype < MAXQUOTAS; qtype++)
quota_enable[qtype] = QOPT_DISABLE;
}
if (FEATURE_ON(E2P_FEATURE_INCOMPAT, EXT4_FEATURE_INCOMPAT_ENCRYPT)) {
fs->super->s_encrypt_algos[0] =
EXT4_ENCRYPTION_MODE_AES_256_XTS;
fs->super->s_encrypt_algos[1] =
EXT4_ENCRYPTION_MODE_AES_256_CTS;
}
if (FEATURE_ON(E2P_FEATURE_INCOMPAT,
EXT4_FEATURE_INCOMPAT_CSUM_SEED)) {
if (!ext2fs_has_feature_metadata_csum(sb)) {
fputs(_("Setting feature 'metadata_csum_seed' "
"is only supported\non filesystems with "
"the metadata_csum feature enabled.\n"),
stderr);
return 1;
}
try_confirm_csum_seed_support();
fs->super->s_checksum_seed = fs->csum_seed;
}
if (FEATURE_OFF(E2P_FEATURE_INCOMPAT,
EXT4_FEATURE_INCOMPAT_CSUM_SEED)) {
__le32 uuid_seed;
uuid_seed = ext2fs_crc32c_le(~0, fs->super->s_uuid,
sizeof(fs->super->s_uuid));
if (fs->super->s_checksum_seed != uuid_seed) {
if (mount_flags & (EXT2_MF_BUSY|EXT2_MF_MOUNTED)) {
fputs(_("UUID has changed since enabling "
"metadata_csum. Filesystem must be unmounted "
"\nto safely rewrite all metadata to match the new UUID.\n"),
stderr);
return 1;
}
check_fsck_needed(fs, _("Recalculating checksums "
"could take some time."));
rewrite_checksums = 1;
}
}
if (sb->s_rev_level == EXT2_GOOD_OLD_REV &&
(sb->s_feature_compat || sb->s_feature_ro_compat ||
sb->s_feature_incompat))
ext2fs_update_dynamic_rev(fs);
if (FEATURE_CHANGED(E2P_FEATURE_RO_INCOMPAT,
EXT2_FEATURE_RO_COMPAT_SPARSE_SUPER) ||
FEATURE_OFF(E2P_FEATURE_RO_INCOMPAT,
EXT4_FEATURE_RO_COMPAT_HUGE_FILE) ||
FEATURE_CHANGED(E2P_FEATURE_INCOMPAT,
EXT2_FEATURE_INCOMPAT_FILETYPE) ||
FEATURE_CHANGED(E2P_FEATURE_COMPAT,
EXT2_FEATURE_COMPAT_RESIZE_INODE) ||
FEATURE_OFF(E2P_FEATURE_RO_INCOMPAT,
EXT2_FEATURE_RO_COMPAT_LARGE_FILE))
request_fsck_afterwards(fs);
if ((old_features[E2P_FEATURE_COMPAT] != sb->s_feature_compat) ||
(old_features[E2P_FEATURE_INCOMPAT] != sb->s_feature_incompat) ||
(old_features[E2P_FEATURE_RO_INCOMPAT] != sb->s_feature_ro_compat))
ext2fs_mark_super_dirty(fs);
return 0;
}
/*
* Add a journal to the filesystem.
*/
static int add_journal(ext2_filsys fs)
{
unsigned long journal_blocks;
errcode_t retval;
ext2_filsys jfs;
io_manager io_ptr;
if (ext2fs_has_feature_journal(fs->super)) {
fputs(_("The filesystem already has a journal.\n"), stderr);
goto err;
}
if (journal_device) {
if (!check_plausibility(journal_device, CHECK_BLOCK_DEV,
NULL))
proceed_question(-1);
check_mount(journal_device, 0, _("journal"));
#ifdef CONFIG_TESTIO_DEBUG
if (getenv("TEST_IO_FLAGS") || getenv("TEST_IO_BLOCK")) {
io_ptr = test_io_manager;
test_io_backing_manager = unix_io_manager;
} else
#endif
io_ptr = unix_io_manager;
retval = ext2fs_open(journal_device, EXT2_FLAG_RW|
EXT2_FLAG_JOURNAL_DEV_OK, 0,
fs->blocksize, io_ptr, &jfs);
if (retval) {
com_err(program_name, retval,
_("\n\twhile trying to open journal on %s\n"),
journal_device);
goto err;
}
printf(_("Creating journal on device %s: "),
journal_device);
fflush(stdout);
retval = ext2fs_add_journal_device(fs, jfs);
ext2fs_close_free(&jfs);
if (retval) {
com_err(program_name, retval,
_("while adding filesystem to journal on %s"),
journal_device);
goto err;
}
fputs(_("done\n"), stdout);
} else if (journal_size) {
fputs(_("Creating journal inode: "), stdout);
fflush(stdout);
journal_blocks = figure_journal_size(journal_size, fs);
if (journal_location_string)
journal_location =
parse_num_blocks2(journal_location_string,
fs->super->s_log_block_size);
retval = ext2fs_add_journal_inode2(fs, journal_blocks,
journal_location,
journal_flags);
if (retval) {
fprintf(stderr, "\n");
com_err(program_name, retval, "%s",
_("\n\twhile trying to create journal file"));
return retval;
} else
fputs(_("done\n"), stdout);
/*
* If the filesystem wasn't mounted, we need to force
* the block group descriptors out.
*/
if ((mount_flags & EXT2_MF_MOUNTED) == 0)
fs->flags &= ~EXT2_FLAG_SUPER_ONLY;
}
print_check_message(fs->super->s_max_mnt_count,
fs->super->s_checkinterval);
return 0;
err:
free(journal_device);
return 1;
}
static void handle_quota_options(ext2_filsys fs)
{
errcode_t retval;
quota_ctx_t qctx;
ext2_ino_t qf_ino;
enum quota_type qtype;
unsigned int qtype_bits = 0;
int need_dirty = 0;
for (qtype = 0 ; qtype < MAXQUOTAS; qtype++)
if (quota_enable[qtype] != 0)
break;
if (qtype == MAXQUOTAS)
/* Nothing to do. */
return;
if (quota_enable[PRJQUOTA] == QOPT_ENABLE &&
fs->super->s_inode_size == EXT2_GOOD_OLD_INODE_SIZE) {
fprintf(stderr, _("Cannot enable project quota; "
"inode size too small.\n"));
exit(1);
}
for (qtype = 0; qtype < MAXQUOTAS; qtype++) {
if (quota_enable[qtype] == QOPT_ENABLE)
qtype_bits |= 1 << qtype;
}
retval = quota_init_context(&qctx, fs, qtype_bits);
if (retval) {
com_err(program_name, retval,
_("while initializing quota context in support library"));
exit(1);
}
if (qtype_bits)
quota_compute_usage(qctx);
for (qtype = 0 ; qtype < MAXQUOTAS; qtype++) {
if (quota_enable[qtype] == QOPT_ENABLE &&
*quota_sb_inump(fs->super, qtype) == 0) {
if ((qf_ino = quota_file_exists(fs, qtype)) > 0) {
retval = quota_update_limits(qctx, qf_ino,
qtype);
if (retval) {
com_err(program_name, retval,
_("while updating quota limits (%d)"),
qtype);
exit(1);
}
}
retval = quota_write_inode(qctx, 1 << qtype);
if (retval) {
com_err(program_name, retval,
_("while writing quota file (%d)"),
qtype);
exit(1);
}
/* Enable Quota feature if one of quota enabled */
if (!ext2fs_has_feature_quota(fs->super)) {
ext2fs_set_feature_quota(fs->super);
need_dirty = 1;
}
if (qtype == PRJQUOTA &&
!ext2fs_has_feature_project(fs->super)) {
ext2fs_set_feature_project(fs->super);
need_dirty = 1;
}
} else if (quota_enable[qtype] == QOPT_DISABLE) {
retval = quota_remove_inode(fs, qtype);
if (retval) {
com_err(program_name, retval,
_("while removing quota file (%d)"),
qtype);
exit(1);
}
if (qtype == PRJQUOTA) {
ext2fs_clear_feature_project(fs->super);
need_dirty = 1;
}
}
}
quota_release_context(&qctx);
/* Clear Quota feature if all quota types disabled. */
if (!qtype_bits) {
for (qtype = 0 ; qtype < MAXQUOTAS; qtype++)
if (*quota_sb_inump(fs->super, qtype))
break;
if (qtype == MAXQUOTAS) {
ext2fs_clear_feature_quota(fs->super);
need_dirty = 1;
}
}
if (need_dirty)
ext2fs_mark_super_dirty(fs);
return;
}
static int option_handle_function(char *token)
{
if (strncmp(token, "usr", 3) == 0) {
quota_enable[USRQUOTA] = QOPT_ENABLE;
} else if (strncmp(token, "^usr", 4) == 0) {
quota_enable[USRQUOTA] = QOPT_DISABLE;
} else if (strncmp(token, "grp", 3) == 0) {
quota_enable[GRPQUOTA] = QOPT_ENABLE;
} else if (strncmp(token, "^grp", 4) == 0) {
quota_enable[GRPQUOTA] = QOPT_DISABLE;
} else if (strncmp(token, "prj", 3) == 0) {
quota_enable[PRJQUOTA] = QOPT_ENABLE;
} else if (strncmp(token, "^prj", 4) == 0) {
quota_enable[PRJQUOTA] = QOPT_DISABLE;
} else {
fputs(_("\nBad quota options specified.\n\n"
"Following valid quota options are available "
"(pass by separating with comma):\n"
"\t[^]usr[quota]\n"
"\t[^]grp[quota]\n"
"\t[^]prj[quota]\n"
"\n\n"), stderr);
return 1;
}
return 0;
}
static void parse_e2label_options(int argc, char ** argv)
{
if ((argc < 2) || (argc > 3)) {
fputs(_("Usage: e2label device [newlabel]\n"), stderr);
exit(1);
}
io_options = strchr(argv[1], '?');
if (io_options)
*io_options++ = 0;
device_name = blkid_get_devname(NULL, argv[1], NULL);
if (!device_name) {
com_err("e2label", 0, _("Unable to resolve '%s'"),
argv[1]);
exit(1);
}
open_flag = EXT2_FLAG_JOURNAL_DEV_OK;
if (argc == 3) {
open_flag |= EXT2_FLAG_RW;
L_flag = 1;
new_label = argv[2];
} else
print_label++;
}
static time_t parse_time(char *str)
{
struct tm ts;
if (strcmp(str, "now") == 0) {
return (time(0));
}
memset(&ts, 0, sizeof(ts));
#ifdef HAVE_STRPTIME
strptime(str, "%Y%m%d%H%M%S", &ts);
#else
sscanf(str, "%4d%2d%2d%2d%2d%2d", &ts.tm_year, &ts.tm_mon,
&ts.tm_mday, &ts.tm_hour, &ts.tm_min, &ts.tm_sec);
ts.tm_year -= 1900;
ts.tm_mon -= 1;
if (ts.tm_year < 0 || ts.tm_mon < 0 || ts.tm_mon > 11 ||
ts.tm_mday < 0 || ts.tm_mday > 31 || ts.tm_hour > 23 ||
ts.tm_min > 59 || ts.tm_sec > 61)
ts.tm_mday = 0;
#endif
if (ts.tm_mday == 0) {
com_err(program_name, 0,
_("Couldn't parse date/time specifier: %s"),
str);
usage();
}
ts.tm_isdst = -1;
return (mktime(&ts));
}
static void parse_tune2fs_options(int argc, char **argv)
{
int c;
char *tmp;
struct group *gr;
struct passwd *pw;
int ret;
char optstring[100] = "c:e:fg:i:jlm:o:r:s:u:C:E:I:J:L:M:O:T:U:z:Q:";
open_flag = 0;
printf("tune2fs %s (%s)\n", E2FSPROGS_VERSION, E2FSPROGS_DATE);
while ((c = getopt(argc, argv, optstring)) != EOF)
switch (c) {
case 'c':
max_mount_count = strtol(optarg, &tmp, 0);
if (*tmp || max_mount_count > 16000) {
com_err(program_name, 0,
_("bad mounts count - %s"),
optarg);
usage();
}
if (max_mount_count == 0)
max_mount_count = -1;
c_flag = 1;
open_flag = EXT2_FLAG_RW;
break;
case 'C':
mount_count = strtoul(optarg, &tmp, 0);
if (*tmp || mount_count > 16000) {
com_err(program_name, 0,
_("bad mounts count - %s"),
optarg);
usage();
}
C_flag = 1;
open_flag = EXT2_FLAG_RW;
break;
case 'e':
if (strcmp(optarg, "continue") == 0)
errors = EXT2_ERRORS_CONTINUE;
else if (strcmp(optarg, "remount-ro") == 0)
errors = EXT2_ERRORS_RO;
else if (strcmp(optarg, "panic") == 0)
errors = EXT2_ERRORS_PANIC;
else {
com_err(program_name, 0,
_("bad error behavior - %s"),
optarg);
usage();
}
e_flag = 1;
open_flag = EXT2_FLAG_RW;
break;
case 'E':
extended_cmd = optarg;
open_flag |= EXT2_FLAG_RW;
break;
case 'f': /* Force */
f_flag++;
break;
case 'g':
resgid = strtoul(optarg, &tmp, 0);
if (*tmp) {
gr = getgrnam(optarg);
if (gr == NULL)
tmp = optarg;
else {
resgid = gr->gr_gid;
*tmp = 0;
}
}
if (*tmp) {
com_err(program_name, 0,
_("bad gid/group name - %s"),
optarg);
usage();
}
g_flag = 1;
open_flag = EXT2_FLAG_RW;
break;
case 'i':
interval = strtoul(optarg, &tmp, 0);
switch (*tmp) {
case 's':
tmp++;
break;
case '\0':
case 'd':
case 'D': /* days */
interval *= 86400;
if (*tmp != '\0')
tmp++;
break;
case 'm':
case 'M': /* months! */
interval *= 86400 * 30;
tmp++;
break;
case 'w':
case 'W': /* weeks */
interval *= 86400 * 7;
tmp++;
break;
}
if (*tmp) {
com_err(program_name, 0,
_("bad interval - %s"), optarg);
usage();
}
i_flag = 1;
open_flag = EXT2_FLAG_RW;
break;
case 'j':
if (!journal_size)
journal_size = -1;
open_flag = EXT2_FLAG_RW;
break;
case 'J':
parse_journal_opts(optarg);
open_flag = EXT2_FLAG_RW;
break;
case 'l':
l_flag = 1;
break;
case 'L':
new_label = optarg;
L_flag = 1;
open_flag |= EXT2_FLAG_RW |
EXT2_FLAG_JOURNAL_DEV_OK;
break;
case 'm':
reserved_ratio = strtod(optarg, &tmp);
if (*tmp || reserved_ratio > 50 ||
reserved_ratio < 0) {
com_err(program_name, 0,
_("bad reserved block ratio - %s"),
optarg);
usage();
}
m_flag = 1;
open_flag = EXT2_FLAG_RW;
break;
case 'M':
new_last_mounted = optarg;
M_flag = 1;
open_flag = EXT2_FLAG_RW;
break;
case 'o':
if (mntopts_cmd) {
com_err(program_name, 0, "%s",
_("-o may only be specified once"));
usage();
}
mntopts_cmd = optarg;
open_flag = EXT2_FLAG_RW;
break;
case 'O':
if (features_cmd) {
com_err(program_name, 0, "%s",
_("-O may only be specified once"));
usage();
}
features_cmd = optarg;
open_flag = EXT2_FLAG_RW;
break;
case 'Q':
Q_flag = 1;
ret = parse_quota_opts(optarg, option_handle_function);
if (ret)
exit(1);
open_flag = EXT2_FLAG_RW;
break;
case 'r':
reserved_blocks = strtoul(optarg, &tmp, 0);
if (*tmp) {
com_err(program_name, 0,
_("bad reserved blocks count - %s"),
optarg);
usage();
}
r_flag = 1;
open_flag = EXT2_FLAG_RW;
break;
case 's': /* Deprecated */
s_flag = atoi(optarg);
open_flag = EXT2_FLAG_RW;
break;
case 'T':
T_flag = 1;
last_check_time = parse_time(optarg);
open_flag = EXT2_FLAG_RW;
break;
case 'u':
resuid = strtoul(optarg, &tmp, 0);
if (*tmp) {
pw = getpwnam(optarg);
if (pw == NULL)
tmp = optarg;
else {
resuid = pw->pw_uid;
*tmp = 0;
}
}
if (*tmp) {
com_err(program_name, 0,
_("bad uid/user name - %s"),
optarg);
usage();
}
u_flag = 1;
open_flag = EXT2_FLAG_RW;
break;
case 'U':
new_UUID = optarg;
U_flag = 1;
open_flag = EXT2_FLAG_RW |
EXT2_FLAG_JOURNAL_DEV_OK;
break;
case 'I':
new_inode_size = strtoul(optarg, &tmp, 0);
if (*tmp) {
com_err(program_name, 0,
_("bad inode size - %s"),
optarg);
usage();
}
if (!((new_inode_size &
(new_inode_size - 1)) == 0)) {
com_err(program_name, 0,
_("Inode size must be a "
"power of two- %s"),
optarg);
usage();
}
open_flag = EXT2_FLAG_RW;
I_flag = 1;
break;
case 'z':
undo_file = optarg;
break;
default:
usage();
}
if (optind < argc - 1 || optind == argc)
usage();
if (!open_flag && !l_flag)
usage();
io_options = strchr(argv[optind], '?');
if (io_options)
*io_options++ = 0;
device_name = blkid_get_devname(NULL, argv[optind], NULL);
if (!device_name) {
com_err(program_name, 0, _("Unable to resolve '%s'"),
argv[optind]);
exit(1);
}
}
#ifdef CONFIG_BUILD_FINDFS
void do_findfs(int argc, char **argv)
{
char *dev;
if ((argc != 2) ||
(strncmp(argv[1], "LABEL=", 6) && strncmp(argv[1], "UUID=", 5))) {
fprintf(stderr, "Usage: findfs LABEL=<label>|UUID=<uuid>\n");
exit(2);
}
dev = blkid_get_devname(NULL, argv[1], NULL);
if (!dev) {
com_err("findfs", 0, _("Unable to resolve '%s'"),
argv[1]);
exit(1);
}
puts(dev);
exit(0);
}
#endif
static int parse_extended_opts(ext2_filsys fs, const char *opts)
{
char *buf, *token, *next, *p, *arg;
int len, hash_alg;
int r_usage = 0;
len = strlen(opts);
buf = malloc(len+1);
if (!buf) {
fprintf(stderr, "%s",
_("Couldn't allocate memory to parse options!\n"));
return 1;
}
strcpy(buf, opts);
for (token = buf; token && *token; token = next) {
p = strchr(token, ',');
next = 0;
if (p) {
*p = 0;
next = p+1;
}
arg = strchr(token, '=');
if (arg) {
*arg = 0;
arg++;
}
if (strcmp(token, "clear-mmp") == 0 ||
strcmp(token, "clear_mmp") == 0) {
clear_mmp = 1;
} else if (strcmp(token, "mmp_update_interval") == 0) {
unsigned long intv;
if (!arg) {
r_usage++;
continue;
}
intv = strtoul(arg, &p, 0);
if (*p) {
fprintf(stderr,
_("Invalid mmp_update_interval: %s\n"),
arg);
r_usage++;
continue;
}
if (intv == 0) {
intv = EXT4_MMP_UPDATE_INTERVAL;
} else if (intv > EXT4_MMP_MAX_UPDATE_INTERVAL) {
fprintf(stderr,
_("mmp_update_interval too big: %lu\n"),
intv);
r_usage++;
continue;
}
printf(P_("Setting multiple mount protection update "
"interval to %lu second\n",
"Setting multiple mount protection update "
"interval to %lu seconds\n", intv),
intv);
fs->super->s_mmp_update_interval = intv;
ext2fs_mark_super_dirty(fs);
} else if (!strcmp(token, "test_fs")) {
fs->super->s_flags |= EXT2_FLAGS_TEST_FILESYS;
printf("Setting test filesystem flag\n");
ext2fs_mark_super_dirty(fs);
} else if (!strcmp(token, "^test_fs")) {
fs->super->s_flags &= ~EXT2_FLAGS_TEST_FILESYS;
printf("Clearing test filesystem flag\n");
ext2fs_mark_super_dirty(fs);
} else if (strcmp(token, "stride") == 0) {
if (!arg) {
r_usage++;
continue;
}
stride = strtoul(arg, &p, 0);
if (*p) {
fprintf(stderr,
_("Invalid RAID stride: %s\n"),
arg);
r_usage++;
continue;
}
stride_set = 1;
} else if (strcmp(token, "stripe-width") == 0 ||
strcmp(token, "stripe_width") == 0) {
if (!arg) {
r_usage++;
continue;
}
stripe_width = strtoul(arg, &p, 0);
if (*p) {
fprintf(stderr,
_("Invalid RAID stripe-width: %s\n"),
arg);
r_usage++;
continue;
}
stripe_width_set = 1;
} else if (strcmp(token, "hash_alg") == 0 ||
strcmp(token, "hash-alg") == 0) {
if (!arg) {
r_usage++;
continue;
}
hash_alg = e2p_string2hash(arg);
if (hash_alg < 0) {
fprintf(stderr,
_("Invalid hash algorithm: %s\n"),
arg);
r_usage++;
continue;
}
fs->super->s_def_hash_version = hash_alg;
printf(_("Setting default hash algorithm "
"to %s (%d)\n"),
arg, hash_alg);
ext2fs_mark_super_dirty(fs);
} else if (!strcmp(token, "mount_opts")) {
if (!arg) {
r_usage++;
continue;
}
if (strlen(arg) >= sizeof(fs->super->s_mount_opts)) {
fprintf(stderr,
"Extended mount options too long\n");
continue;
}
ext_mount_opts = strdup(arg);
} else
r_usage++;
}
if (r_usage) {
fprintf(stderr, "%s", _("\nBad options specified.\n\n"
"Extended options are separated by commas, "
"and may take an argument which\n"
"\tis set off by an equals ('=') sign.\n\n"
"Valid extended options are:\n"
"\tclear_mmp\n"
"\thash_alg=<hash algorithm>\n"
"\tmount_opts=<extended default mount options>\n"
"\tmmp_update_interval=<mmp update interval in seconds>\n"
"\tstride=<RAID per-disk chunk size in blocks>\n"
"\tstripe_width=<RAID stride*data disks in blocks>\n"
"\ttest_fs\n"
"\t^test_fs\n"));
free(buf);
return 1;
}
free(buf);
return 0;
}
/*
* Fill in the block bitmap bmap with the information regarding the
* blocks to be moved
*/
static int get_move_bitmaps(ext2_filsys fs, int new_ino_blks_per_grp,
ext2fs_block_bitmap bmap)
{
dgrp_t i;
int retval;
ext2_badblocks_list bb_list = 0;
blk64_t j, needed_blocks = 0;
blk64_t start_blk, end_blk;
retval = ext2fs_read_bb_inode(fs, &bb_list);
if (retval)
return retval;
for (i = 0; i < fs->group_desc_count; i++) {
start_blk = ext2fs_inode_table_loc(fs, i) +
fs->inode_blocks_per_group;
end_blk = ext2fs_inode_table_loc(fs, i) +
new_ino_blks_per_grp;
for (j = start_blk; j < end_blk; j++) {
if (ext2fs_test_block_bitmap2(fs->block_map, j)) {
/*
* IF the block is a bad block we fail
*/
if (ext2fs_badblocks_list_test(bb_list, j)) {
ext2fs_badblocks_list_free(bb_list);
return ENOSPC;
}
ext2fs_mark_block_bitmap2(bmap, j);
} else {
/*
* We are going to use this block for
* inode table. So mark them used.
*/
ext2fs_mark_block_bitmap2(fs->block_map, j);
}
}
needed_blocks += end_blk - start_blk;
}
ext2fs_badblocks_list_free(bb_list);
if (needed_blocks > ext2fs_free_blocks_count(fs->super))
return ENOSPC;
return 0;
}
static int ext2fs_is_meta_block(ext2_filsys fs, blk64_t blk)
{
dgrp_t group;
group = ext2fs_group_of_blk2(fs, blk);
if (ext2fs_block_bitmap_loc(fs, group) == blk)
return 1;
if (ext2fs_inode_bitmap_loc(fs, group) == blk)
return 1;
return 0;
}
static int ext2fs_is_block_in_group(ext2_filsys fs, dgrp_t group, blk64_t blk)
{
blk64_t start_blk, end_blk;
start_blk = fs->super->s_first_data_block +
EXT2_GROUPS_TO_BLOCKS(fs->super, group);
/*
* We cannot get new block beyond end_blk for for the last block group
* so we can check with EXT2_BLOCKS_PER_GROUP even for last block group
*/
end_blk = start_blk + EXT2_BLOCKS_PER_GROUP(fs->super);
if (blk >= start_blk && blk <= end_blk)
return 1;
return 0;
}
static int move_block(ext2_filsys fs, ext2fs_block_bitmap bmap)
{
char *buf;
dgrp_t group = 0;
errcode_t retval;
int meta_data = 0;
blk64_t blk, new_blk, goal;
struct blk_move *bmv;
retval = ext2fs_get_mem(fs->blocksize, &buf);
if (retval)
return retval;
for (new_blk = blk = fs->super->s_first_data_block;
blk < ext2fs_blocks_count(fs->super); blk++) {
if (!ext2fs_test_block_bitmap2(bmap, blk))
continue;
if (ext2fs_is_meta_block(fs, blk)) {
/*
* If the block is mapping a fs meta data block
* like group desc/block bitmap/inode bitmap. We
* should find a block in the same group and fix
* the respective fs metadata pointers. Otherwise
* fail
*/
group = ext2fs_group_of_blk2(fs, blk);
goal = ext2fs_group_first_block2(fs, group);
meta_data = 1;
} else {
goal = new_blk;
}
retval = ext2fs_new_block2(fs, goal, NULL, &new_blk);
if (retval)
goto err_out;
/* new fs meta data block should be in the same group */
if (meta_data && !ext2fs_is_block_in_group(fs, group, new_blk)) {
retval = ENOSPC;
goto err_out;
}
/* Mark this block as allocated */
ext2fs_mark_block_bitmap2(fs->block_map, new_blk);
/* Add it to block move list */
retval = ext2fs_get_mem(sizeof(struct blk_move), &bmv);
if (retval)
goto err_out;
bmv->old_loc = blk;
bmv->new_loc = new_blk;
list_add(&(bmv->list), &blk_move_list);
retval = io_channel_read_blk64(fs->io, blk, 1, buf);
if (retval)
goto err_out;
retval = io_channel_write_blk64(fs->io, new_blk, 1, buf);
if (retval)
goto err_out;
}
err_out:
ext2fs_free_mem(&buf);
return retval;
}
static blk64_t translate_block(blk64_t blk)
{
struct list_head *entry;
struct blk_move *bmv;
list_for_each(entry, &blk_move_list) {
bmv = list_entry(entry, struct blk_move, list);
if (bmv->old_loc == blk)
return bmv->new_loc;
}
return 0;
}
static int process_block(ext2_filsys fs EXT2FS_ATTR((unused)),
blk64_t *block_nr,
e2_blkcnt_t blockcnt EXT2FS_ATTR((unused)),
blk64_t ref_block EXT2FS_ATTR((unused)),
int ref_offset EXT2FS_ATTR((unused)),
void *priv_data)
{
int ret = 0;
blk64_t new_blk;
ext2fs_block_bitmap bmap = (ext2fs_block_bitmap) priv_data;
if (!ext2fs_test_block_bitmap2(bmap, *block_nr))
return 0;
new_blk = translate_block(*block_nr);
if (new_blk) {
*block_nr = new_blk;
/*
* This will force the ext2fs_write_inode in the iterator
*/
ret |= BLOCK_CHANGED;
}
return ret;
}
static int inode_scan_and_fix(ext2_filsys fs, ext2fs_block_bitmap bmap)
{
errcode_t retval = 0;
ext2_ino_t ino;
blk64_t blk;
char *block_buf = 0;
struct ext2_inode inode;
ext2_inode_scan scan = NULL;
retval = ext2fs_get_mem(fs->blocksize * 3, &block_buf);
if (retval)
return retval;
retval = ext2fs_open_inode_scan(fs, 0, &scan);
if (retval)
goto err_out;
while (1) {
retval = ext2fs_get_next_inode(scan, &ino, &inode);
if (retval)
goto err_out;
if (!ino)
break;
if (inode.i_links_count == 0)
continue; /* inode not in use */
/* FIXME!!
* If we end up modifying the journal inode
* the sb->s_jnl_blocks will differ. But a
* subsequent e2fsck fixes that.
* Do we need to fix this ??
*/
if (ext2fs_file_acl_block(fs, &inode) &&
ext2fs_test_block_bitmap2(bmap,
ext2fs_file_acl_block(fs, &inode))) {
blk = translate_block(ext2fs_file_acl_block(fs,
&inode));
if (!blk)
continue;
ext2fs_file_acl_block_set(fs, &inode, blk);
/*
* Write the inode to disk so that inode table
* resizing can work
*/
retval = ext2fs_write_inode(fs, ino, &inode);
if (retval)
goto err_out;
}
if (!ext2fs_inode_has_valid_blocks2(fs, &inode))
continue;
retval = ext2fs_block_iterate3(fs, ino, 0, block_buf,
process_block, bmap);
if (retval)
goto err_out;
}
err_out:
ext2fs_free_mem(&block_buf);
ext2fs_close_inode_scan(scan);
return retval;
}
/*
* We need to scan for inode and block bitmaps that may need to be
* moved. This can take place if the filesystem was formatted for
* RAID arrays using the mke2fs's extended option "stride".
*/
static int group_desc_scan_and_fix(ext2_filsys fs, ext2fs_block_bitmap bmap)
{
dgrp_t i;
blk64_t blk, new_blk;
for (i = 0; i < fs->group_desc_count; i++) {
blk = ext2fs_block_bitmap_loc(fs, i);
if (ext2fs_test_block_bitmap2(bmap, blk)) {
new_blk = translate_block(blk);
if (!new_blk)
continue;
ext2fs_block_bitmap_loc_set(fs, i, new_blk);
}
blk = ext2fs_inode_bitmap_loc(fs, i);
if (ext2fs_test_block_bitmap2(bmap, blk)) {
new_blk = translate_block(blk);
if (!new_blk)
continue;
ext2fs_inode_bitmap_loc_set(fs, i, new_blk);
}
}
return 0;
}
static int expand_inode_table(ext2_filsys fs, unsigned long new_ino_size)
{
dgrp_t i;
blk64_t blk;
errcode_t retval;
int new_ino_blks_per_grp;
unsigned int j;
char *old_itable = NULL, *new_itable = NULL;
char *tmp_old_itable = NULL, *tmp_new_itable = NULL;
unsigned long old_ino_size;
int old_itable_size, new_itable_size;
old_itable_size = fs->inode_blocks_per_group * fs->blocksize;
old_ino_size = EXT2_INODE_SIZE(fs->super);
new_ino_blks_per_grp = ext2fs_div_ceil(
EXT2_INODES_PER_GROUP(fs->super) *
new_ino_size,
fs->blocksize);
new_itable_size = new_ino_blks_per_grp * fs->blocksize;
retval = ext2fs_get_mem(old_itable_size, &old_itable);
if (retval)
return retval;
retval = ext2fs_get_mem(new_itable_size, &new_itable);
if (retval)
goto err_out;
tmp_old_itable = old_itable;
tmp_new_itable = new_itable;
for (i = 0; i < fs->group_desc_count; i++) {
blk = ext2fs_inode_table_loc(fs, i);
retval = io_channel_read_blk64(fs->io, blk,
fs->inode_blocks_per_group, old_itable);
if (retval)
goto err_out;
for (j = 0; j < EXT2_INODES_PER_GROUP(fs->super); j++) {
memcpy(new_itable, old_itable, old_ino_size);
memset(new_itable+old_ino_size, 0,
new_ino_size - old_ino_size);
new_itable += new_ino_size;
old_itable += old_ino_size;
}
/* reset the pointer */
old_itable = tmp_old_itable;
new_itable = tmp_new_itable;
retval = io_channel_write_blk64(fs->io, blk,
new_ino_blks_per_grp, new_itable);
if (retval)
goto err_out;
}
/* Update the meta data */
fs->inode_blocks_per_group = new_ino_blks_per_grp;
ext2fs_free_inode_cache(fs->icache);
fs->icache = 0;
fs->super->s_inode_size = new_ino_size;
err_out:
if (old_itable)
ext2fs_free_mem(&old_itable);
if (new_itable)
ext2fs_free_mem(&new_itable);
return retval;
}
static errcode_t ext2fs_calculate_summary_stats(ext2_filsys fs)
{
blk64_t blk;
ext2_ino_t ino;
unsigned int group = 0;
unsigned int count = 0;
int total_free = 0;
int group_free = 0;
/*
* First calculate the block statistics
*/
for (blk = fs->super->s_first_data_block;
blk < ext2fs_blocks_count(fs->super); blk++) {
if (!ext2fs_fast_test_block_bitmap2(fs->block_map, blk)) {
group_free++;
total_free++;
}
count++;
if ((count == fs->super->s_blocks_per_group) ||
(blk == ext2fs_blocks_count(fs->super)-1)) {
ext2fs_bg_free_blocks_count_set(fs, group++,
group_free);
count = 0;
group_free = 0;
}
}
total_free = EXT2FS_C2B(fs, total_free);
ext2fs_free_blocks_count_set(fs->super, total_free);
/*
* Next, calculate the inode statistics
*/
group_free = 0;
total_free = 0;
count = 0;
group = 0;
/* Protect loop from wrap-around if s_inodes_count maxed */
for (ino = 1; ino <= fs->super->s_inodes_count && ino > 0; ino++) {
if (!ext2fs_fast_test_inode_bitmap2(fs->inode_map, ino)) {
group_free++;
total_free++;
}
count++;
if ((count == fs->super->s_inodes_per_group) ||
(ino == fs->super->s_inodes_count)) {
ext2fs_bg_free_inodes_count_set(fs, group++,
group_free);
count = 0;
group_free = 0;
}
}
fs->super->s_free_inodes_count = total_free;
ext2fs_mark_super_dirty(fs);
return 0;
}
#define list_for_each_safe(pos, pnext, head) \
for (pos = (head)->next, pnext = pos->next; pos != (head); \
pos = pnext, pnext = pos->next)
static void free_blk_move_list(void)
{
struct list_head *entry, *tmp;
struct blk_move *bmv;
list_for_each_safe(entry, tmp, &blk_move_list) {
bmv = list_entry(entry, struct blk_move, list);
list_del(entry);
ext2fs_free_mem(&bmv);
}
return;
}
static int resize_inode(ext2_filsys fs, unsigned long new_size)
{
errcode_t retval;
int new_ino_blks_per_grp;
ext2fs_block_bitmap bmap;
retval = ext2fs_read_inode_bitmap(fs);
if (retval) {
fputs(_("Failed to read inode bitmap\n"), stderr);
return retval;
}
retval = ext2fs_read_block_bitmap(fs);
if (retval) {
fputs(_("Failed to read block bitmap\n"), stderr);
return retval;
}
INIT_LIST_HEAD(&blk_move_list);
new_ino_blks_per_grp = ext2fs_div_ceil(
EXT2_INODES_PER_GROUP(fs->super)*
new_size,
fs->blocksize);
/* We may change the file system.
* Mark the file system as invalid so that
* the user is prompted to run fsck.
*/
fs->super->s_state &= ~EXT2_VALID_FS;
retval = ext2fs_allocate_block_bitmap(fs, _("blocks to be moved"),
&bmap);
if (retval) {
fputs(_("Failed to allocate block bitmap when "
"increasing inode size\n"), stderr);
return retval;
}
retval = get_move_bitmaps(fs, new_ino_blks_per_grp, bmap);
if (retval) {
fputs(_("Not enough space to increase inode size \n"), stderr);
goto err_out;
}
retval = move_block(fs, bmap);
if (retval) {
fputs(_("Failed to relocate blocks during inode resize \n"),
stderr);
goto err_out;
}
retval = inode_scan_and_fix(fs, bmap);
if (retval)
goto err_out_undo;
retval = group_desc_scan_and_fix(fs, bmap);
if (retval)
goto err_out_undo;
retval = expand_inode_table(fs, new_size);
if (retval)
goto err_out_undo;
ext2fs_calculate_summary_stats(fs);
fs->super->s_state |= EXT2_VALID_FS;
/* mark super block and block bitmap as dirty */
ext2fs_mark_super_dirty(fs);
ext2fs_mark_bb_dirty(fs);
err_out:
free_blk_move_list();
ext2fs_free_block_bitmap(bmap);
return retval;
err_out_undo:
free_blk_move_list();
ext2fs_free_block_bitmap(bmap);
fputs(_("Error in resizing the inode size.\n"
"Run e2undo to undo the "
"file system changes. \n"), stderr);
return retval;
}
static int tune2fs_setup_tdb(const char *name, io_manager *io_ptr)
{
errcode_t retval = 0;
const char *tdb_dir;
char *tdb_file = NULL;
char *dev_name, *tmp_name;
/* (re)open a specific undo file */
if (undo_file && undo_file[0] != 0) {
retval = set_undo_io_backing_manager(*io_ptr);
if (retval)
goto err;
*io_ptr = undo_io_manager;
retval = set_undo_io_backup_file(undo_file);
if (retval)
goto err;
printf(_("Overwriting existing filesystem; this can be undone "