#include <time.h>
#include <unistd.h>
#include <sys/types.h>
+#include <libgen.h>
#include "ext2fs/ext2_fs.h"
#include "ext2fs/ext2fs.h"
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, r_flag, s_flag = -1, u_flag, U_flag, T_flag;
+static int I_flag;
static time_t last_check_time;
static int print_label;
static int max_mount_count, mount_count, mount_flags;
static int stride, stripe_width;
static int stride_set, stripe_width_set;
static char *extended_cmd;
+static unsigned long int new_inode_size;
int journal_size, journal_flags;
char *journal_device;
+static struct list_head blk_move_list;
+
+struct blk_move {
+ struct list_head list;
+ blk_t old_loc;
+ blk_t new_loc;
+};
+
+
static const char *please_fsck = N_("Please run e2fsck on the filesystem.\n");
void do_findfs(int argc, char **argv);
"[-L volume_label]\n"
"\t[-M last_mounted_dir] [-O [^]feature[,...]]\n"
"\t[-E extended-option[,...]] [-T last_check_time] "
- "[-U UUID] device\n"), program_name);
+ "[-U UUID]\n\t[ -I new_inode_size ] device\n"), program_name);
exit (1);
}
open_flag = EXT2_FLAG_SOFTSUPP_FEATURES;
printf("tune2fs %s (%s)\n", E2FSPROGS_VERSION, E2FSPROGS_DATE);
- while ((c = getopt(argc, argv, "c:e:fg:i:jlm:o:r:s:u:C:E:J:L:M:O:T:U:")) != EOF)
+ while ((c = getopt(argc, argv, "c:e:fg:i:jlm:o:r:s:u:C:E:I:J:L:M:O:T:U:")) != EOF)
switch (c)
{
case 'c':
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;
default:
usage();
}
free(buf);
}
+static int get_move_bitmap(ext2_filsys fs, int new_ino_blks_per_grp,
+ ext2fs_block_bitmap bmap)
+{
+ dgrp_t i;
+ blk_t j, needed_blocks = 0;
+ blk_t start_blk, end_blk;
+
+ for (i = 0; i < fs->group_desc_count; i++) {
+
+ start_blk = fs->group_desc[i].bg_inode_table +
+ fs->inode_blocks_per_group;
+
+ end_blk = fs->group_desc[i].bg_inode_table +
+ new_ino_blks_per_grp;
+
+ for (j = start_blk; j < end_blk; j++) {
+
+ if (ext2fs_test_block_bitmap(fs->block_map, j)) {
+ /* FIXME!!
+ * What happens if the block is marked
+ * as a bad block
+ */
+ ext2fs_mark_block_bitmap(bmap, j);
+ needed_blocks++;
+ } else {
+ /*
+ * We are going to use this block for
+ * inode table. So mark them used.
+ */
+ ext2fs_mark_block_bitmap(fs->block_map, j);
+ }
+ }
+ }
+
+ if (needed_blocks > fs->super->s_free_blocks_count ) {
+ return ENOSPC;
+ }
+
+ return 0;
+}
+
+static int move_block(ext2_filsys fs, ext2fs_block_bitmap bmap)
+{
+ char *buf;
+ errcode_t retval;
+ blk_t blk, new_blk;
+ struct blk_move *bmv;
+
+
+ retval = ext2fs_get_mem(fs->blocksize, &buf);
+ if (retval)
+ return retval;
+
+ for (blk = fs->super->s_first_data_block;
+ blk < fs->super->s_blocks_count; blk++) {
+
+ if (!ext2fs_test_block_bitmap(bmap, blk))
+ continue;
+
+ retval = ext2fs_new_block(fs, blk, NULL, &new_blk);
+ if (retval)
+ goto err_out;
+
+ /* Mark this block as allocated */
+ ext2fs_mark_block_bitmap(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_blk(fs->io, blk, 1, buf);
+ if (retval)
+ goto err_out;
+
+ retval = io_channel_write_blk(fs->io, new_blk, 1, buf);
+ if (retval)
+ goto err_out;
+ }
+
+err_out:
+ ext2fs_free_mem(&buf);
+ return retval;
+}
+
+static blk_t transalate_block(blk_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, blk_t *block_nr,
+ e2_blkcnt_t blockcnt,
+ blk_t ref_block EXT2FS_ATTR((unused)),
+ int ref_offset EXT2FS_ATTR((unused)),
+ void *priv_data EXT2FS_ATTR((unused)))
+{
+ int ret = 0;
+ blk_t new_blk;
+
+
+ new_blk = transalate_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)
+{
+ errcode_t retval = 0;
+ ext2_ino_t ino;
+ blk_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 (inode.i_file_acl) {
+
+ blk = transalate_block(inode.i_file_acl);
+ if (!blk)
+ continue;
+
+ inode.i_file_acl = 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_blocks(&inode))
+ continue;
+
+ retval = ext2fs_block_iterate2(fs, ino, 0,
+ block_buf, process_block,
+ 0);
+ if (retval)
+ goto err_out;
+
+ }
+
+err_out:
+ ext2fs_free_mem(&block_buf);
+
+ return retval;
+
+}
+
+static int expand_inode_table(ext2_filsys fs, unsigned long int new_inode_size)
+{
+ dgrp_t i;
+ blk_t blk;
+ errcode_t retval;
+ int new_ino_blks_per_grp, j;
+ char *old_itable = NULL, *new_itable = NULL;
+ char *tmp_old_itable = NULL, *tmp_new_itable = NULL;
+ unsigned long int old_inode_size;
+ int old_itable_size, new_itable_size;
+
+ old_itable_size = fs->inode_blocks_per_group * fs->blocksize;
+ old_inode_size = EXT2_INODE_SIZE(fs->super);
+
+ new_ino_blks_per_grp = ext2fs_div_ceil(
+ EXT2_INODES_PER_GROUP(fs->super) *
+ new_inode_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 = fs->group_desc[i].bg_inode_table;
+ retval = io_channel_read_blk(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_inode_size);
+
+ memset(new_itable+old_inode_size, 0,
+ new_inode_size - old_inode_size);
+
+ new_itable += new_inode_size;
+ old_itable += old_inode_size;
+ }
+
+ /* reset the pointer */
+ old_itable = tmp_old_itable;
+ new_itable = tmp_new_itable;
+
+ retval = io_channel_write_blk(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;
+ fs->super->s_inode_size = new_inode_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)
+{
+ blk_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 < fs->super->s_blocks_count; blk++) {
+ if (!ext2fs_fast_test_block_bitmap(fs->block_map, blk)) {
+ group_free++;
+ total_free++;
+ }
+ count++;
+ if ((count == fs->super->s_blocks_per_group) ||
+ (blk == fs->super->s_blocks_count-1)) {
+ fs->group_desc[group++].bg_free_blocks_count =
+ group_free;
+ count = 0;
+ group_free = 0;
+ }
+ }
+ fs->super->s_free_blocks_count = 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_bitmap(fs->inode_map, ino)) {
+ group_free++;
+ total_free++;
+ }
+ count++;
+ if ((count == fs->super->s_inodes_per_group) ||
+ (ino == fs->super->s_inodes_count)) {
+ fs->group_desc[group++].bg_free_inodes_count =
+ 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()
+{
+ 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 int new_inode_size)
+{
+ errcode_t retval;
+ int new_ino_blks_per_grp;
+ ext2fs_block_bitmap bmap;
+
+ if (new_inode_size <= EXT2_INODE_SIZE(fs->super)) {
+ fprintf(stderr, _("New inode size too small\n"));
+ return EXT2_ET_INVALID_ARGUMENT;
+ }
+
+ ext2fs_read_inode_bitmap(fs);
+ ext2fs_read_block_bitmap(fs);
+ INIT_LIST_HEAD(&blk_move_list);
+
+
+ new_ino_blks_per_grp = ext2fs_div_ceil(
+ EXT2_INODES_PER_GROUP(fs->super)*
+ new_inode_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)
+ return retval;
+
+ retval = get_move_bitmap(fs, new_ino_blks_per_grp, bmap);
+ if (retval)
+ goto err_out;
+
+ retval = move_block(fs, bmap);
+ if (retval)
+ goto err_out;
+
+ retval = inode_scan_and_fix(fs);
+ if (retval)
+ goto err_out;
+
+ retval = expand_inode_table(fs, new_inode_size);
+ if (retval)
+ goto err_out;
+
+ 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;
+}
+
+static int tune2fs_setup_tdb(const char *name, io_manager *io_ptr)
+{
+ errcode_t retval = 0;
+ char *tdb_dir, tdb_file[PATH_MAX];
+ char *device_name, *tmp_name;
+
+#if 0 /* FIXME!! */
+ /*
+ * Configuration via a conf file would be
+ * nice
+ */
+ profile_get_string(profile, "scratch_files",
+ "directory", 0, 0,
+ &tdb_dir);
+#endif
+ tmp_name = strdup(name);
+ device_name = basename(tmp_name);
+
+ tdb_dir = getenv("E2FSPROGS_UNDO_DIR");
+ if (!tdb_dir)
+ tdb_dir="/var/lib/e2fsprogs";
+
+ if (!strcmp(tdb_dir, "none") || (tdb_dir[0] == 0) ||
+ access(tdb_dir, W_OK))
+ return 0;
+
+ sprintf(tdb_file, "%s/tune2fs-%s.e2undo", tdb_dir, device_name);
+
+ if (!access(tdb_file, F_OK)) {
+ if (unlink(tdb_file) < 0) {
+ retval = errno;
+ com_err(program_name, retval,
+ _("while trying to delete %s"),
+ tdb_file);
+ return retval;
+ }
+ }
+
+ set_undo_io_backing_manager(*io_ptr);
+ *io_ptr = undo_io_manager;
+ set_undo_io_backup_file(tdb_file);
+ printf(_("To undo the tune2fs operations please run "
+ "the command\n undoe2fs %s %s\n\n"),
+ tdb_file, name);
+err_out:
+ free(tmp_name);
+ return retval;
+}
int main (int argc, char ** argv)
{
#else
io_ptr = unix_io_manager;
#endif
+
+ if (I_flag) {
+ /*
+ * If inode resize is requested use the
+ * Undo I/O manager
+ */
+ retval = tune2fs_setup_tdb(device_name, &io_ptr);
+ if (retval)
+ exit(1);
+ }
+
retval = ext2fs_open2(device_name, io_options, open_flag,
0, 0, io_ptr, &fs);
if (retval) {
}
ext2fs_mark_super_dirty(fs);
}
+ if (I_flag) {
+ if (mount_flags & EXT2_MF_MOUNTED) {
+ fputs(_("The inode size may only be "
+ "changed when the filesystem is "
+ "unmounted.\n"), stderr);
+ exit(1);
+ }
+ /*
+ * We want to update group descriptor also
+ * with the new free inode count
+ */
+ fs->flags &= ~EXT2_FLAG_SUPER_ONLY;
+ if (resize_inode(fs, new_inode_size)) {
+ fputs(_("Error in resizing the inode size.\n"
+ "Run undoe2fs to undo the "
+ "file system changes. \n"), stderr);
+ } else {
+ printf (_("Setting inode size %d\n"),
+ new_inode_size);
+ }
+ }
if (l_flag)
list_super (sb);
git://git.whamcloud.com / tools / e2fsprogs.git / commitdiff