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Date: Thu, 15 Sep 2011 18:50:52 -0400
From: Theodore Ts'o <tytso@....edu>
To: Ext4 Developers List <linux-ext4@...r.kernel.org>
Cc: Theodore Ts'o <tytso@....edu>
Subject: [PATCH 2/2] debugfs: add 64-bit support to the set_field commands
The set_fields commands (set_super_value, set_inode_field,
set_block_group) now handle fields which store in split fields on
ext4's on-disk format. For example, the superblock fields
s_blocks_count and s_blocks_count_hi.
The user can either set the low or high part of the field via
"blocks_count_lo" or "blocks_count_hi", or both parts can be set via
"blocks_count".
Signed-off-by: "Theodore Ts'o" <tytso@....edu>
---
debugfs/debugfs.h | 2 +
debugfs/set_fields.c | 453 ++++++++++++++++++++++++++++++++------------------
debugfs/util.c | 16 ++
3 files changed, 310 insertions(+), 161 deletions(-)
diff --git a/debugfs/debugfs.h b/debugfs/debugfs.h
index 0ea2474..24c4dce 100644
--- a/debugfs/debugfs.h
+++ b/debugfs/debugfs.h
@@ -50,6 +50,8 @@ extern int debugfs_read_inode_full(ext2_ino_t ino, struct ext2_inode * inode,
const char *cmd, int bufsize);
extern int debugfs_write_inode(ext2_ino_t ino, struct ext2_inode * inode,
const char *cmd);
+extern int debugfs_write_inode_full(ext2_ino_t ino, struct ext2_inode * inode,
+ const char *cmd, int bufsize);
extern int debugfs_write_new_inode(ext2_ino_t ino, struct ext2_inode * inode,
const char *cmd);
diff --git a/debugfs/set_fields.c b/debugfs/set_fields.c
index 1a5ec7f..06d0ad8 100644
--- a/debugfs/set_fields.c
+++ b/debugfs/set_fields.c
@@ -40,8 +40,9 @@
#include "e2p/e2p.h"
static struct ext2_super_block set_sb;
-static struct ext2_inode set_inode;
+static struct ext2_inode_large set_inode;
static struct ext2_group_desc set_gd;
+static struct ext4_group_desc set_gd4;
static dgrp_t set_bg;
static ext2_ino_t set_ino;
static int array_idx;
@@ -51,154 +52,208 @@ static int array_idx;
struct field_set_info {
const char *name;
void *ptr;
+ void *ptr2;
unsigned int size;
- errcode_t (*func)(struct field_set_info *info, char *arg);
+ errcode_t (*func)(struct field_set_info *info, char *field, char *arg);
int flags;
int max_idx;
};
-static errcode_t parse_uint(struct field_set_info *info, char *arg);
-static errcode_t parse_int(struct field_set_info *info, char *arg);
-static errcode_t parse_string(struct field_set_info *info, char *arg);
-static errcode_t parse_uuid(struct field_set_info *info, char *arg);
-static errcode_t parse_hashalg(struct field_set_info *info, char *arg);
-static errcode_t parse_time(struct field_set_info *info, char *arg);
-static errcode_t parse_bmap(struct field_set_info *info, char *arg);
-static errcode_t parse_gd_csum(struct field_set_info *info, char *arg);
+static errcode_t parse_uint(struct field_set_info *info, char *field, char *arg);
+static errcode_t parse_int(struct field_set_info *info, char *field, char *arg);
+static errcode_t parse_string(struct field_set_info *info, char *field, char *arg);
+static errcode_t parse_uuid(struct field_set_info *info, char *field, char *arg);
+static errcode_t parse_hashalg(struct field_set_info *info, char *field, char *arg);
+static errcode_t parse_time(struct field_set_info *info, char *field, char *arg);
+static errcode_t parse_bmap(struct field_set_info *info, char *field, char *arg);
+static errcode_t parse_gd_csum(struct field_set_info *info, char *field, char *arg);
static struct field_set_info super_fields[] = {
- { "inodes_count", &set_sb.s_inodes_count, 4, parse_uint },
- { "blocks_count", &set_sb.s_blocks_count, 4, parse_uint },
- { "r_blocks_count", &set_sb.s_r_blocks_count, 4, parse_uint },
- { "free_blocks_count", &set_sb.s_free_blocks_count, 4, parse_uint },
- { "free_inodes_count", &set_sb.s_free_inodes_count, 4, parse_uint },
- { "first_data_block", &set_sb.s_first_data_block, 4, parse_uint },
- { "log_block_size", &set_sb.s_log_block_size, 4, parse_uint },
- { "log_cluster_size", &set_sb.s_log_cluster_size, 4, parse_int },
- { "blocks_per_group", &set_sb.s_blocks_per_group, 4, parse_uint },
- { "clusters_per_group", &set_sb.s_clusters_per_group, 4, parse_uint },
- { "inodes_per_group", &set_sb.s_inodes_per_group, 4, parse_uint },
- { "mtime", &set_sb.s_mtime, 4, parse_time },
- { "wtime", &set_sb.s_wtime, 4, parse_time },
- { "mnt_count", &set_sb.s_mnt_count, 2, parse_uint },
- { "max_mnt_count", &set_sb.s_max_mnt_count, 2, parse_int },
+ { "inodes_count", &set_sb.s_inodes_count, NULL, 4, parse_uint },
+ { "blocks_count", &set_sb.s_blocks_count, &set_sb.s_blocks_count_hi,
+ 4, parse_uint },
+ { "r_blocks_count", &set_sb.s_r_blocks_count,
+ &set_sb.s_r_blocks_count_hi, 4, parse_uint },
+ { "free_blocks_count", &set_sb.s_free_blocks_count,
+ &set_sb.s_free_blocks_hi, 4, parse_uint },
+ { "free_inodes_count", &set_sb.s_free_inodes_count, NULL, 4, parse_uint },
+ { "first_data_block", &set_sb.s_first_data_block, NULL, 4, parse_uint },
+ { "log_block_size", &set_sb.s_log_block_size, NULL, 4, parse_uint },
+ { "log_cluster_size", &set_sb.s_log_cluster_size, NULL, 4, parse_int },
+ { "blocks_per_group", &set_sb.s_blocks_per_group, NULL, 4, parse_uint },
+ { "clusters_per_group", &set_sb.s_clusters_per_group, NULL, 4, parse_uint },
+ { "inodes_per_group", &set_sb.s_inodes_per_group, NULL, 4, parse_uint },
+ { "mtime", &set_sb.s_mtime, NULL, 4, parse_time },
+ { "wtime", &set_sb.s_wtime, NULL, 4, parse_time },
+ { "mnt_count", &set_sb.s_mnt_count, NULL, 2, parse_uint },
+ { "max_mnt_count", &set_sb.s_max_mnt_count, NULL, 2, parse_int },
/* s_magic */
- { "state", &set_sb.s_state, 2, parse_uint },
- { "errors", &set_sb.s_errors, 2, parse_uint },
- { "minor_rev_level", &set_sb.s_minor_rev_level, 2, parse_uint },
- { "lastcheck", &set_sb.s_lastcheck, 4, parse_time },
- { "checkinterval", &set_sb.s_checkinterval, 4, parse_uint },
- { "creator_os", &set_sb.s_creator_os, 4, parse_uint },
- { "rev_level", &set_sb.s_rev_level, 4, parse_uint },
- { "def_resuid", &set_sb.s_def_resuid, 2, parse_uint },
- { "def_resgid", &set_sb.s_def_resgid, 2, parse_uint },
- { "first_ino", &set_sb.s_first_ino, 4, parse_uint },
- { "inode_size", &set_sb.s_inode_size, 2, parse_uint },
- { "block_group_nr", &set_sb.s_block_group_nr, 2, parse_uint },
- { "feature_compat", &set_sb.s_feature_compat, 4, parse_uint },
- { "feature_incompat", &set_sb.s_feature_incompat, 4, parse_uint },
- { "feature_ro_compat", &set_sb.s_feature_ro_compat, 4, parse_uint },
- { "uuid", &set_sb.s_uuid, 16, parse_uuid },
- { "volume_name", &set_sb.s_volume_name, 16, parse_string },
- { "last_mounted", &set_sb.s_last_mounted, 64, parse_string },
- { "lastcheck", &set_sb.s_lastcheck, 4, parse_uint },
- { "algorithm_usage_bitmap", &set_sb.s_algorithm_usage_bitmap,
+ { "state", &set_sb.s_state, NULL, 2, parse_uint },
+ { "errors", &set_sb.s_errors, NULL, 2, parse_uint },
+ { "minor_rev_level", &set_sb.s_minor_rev_level, NULL, 2, parse_uint },
+ { "lastcheck", &set_sb.s_lastcheck, NULL, 4, parse_time },
+ { "checkinterval", &set_sb.s_checkinterval, NULL, 4, parse_uint },
+ { "creator_os", &set_sb.s_creator_os, NULL, 4, parse_uint },
+ { "rev_level", &set_sb.s_rev_level, NULL, 4, parse_uint },
+ { "def_resuid", &set_sb.s_def_resuid, NULL, 2, parse_uint },
+ { "def_resgid", &set_sb.s_def_resgid, NULL, 2, parse_uint },
+ { "first_ino", &set_sb.s_first_ino, NULL, 4, parse_uint },
+ { "inode_size", &set_sb.s_inode_size, NULL, 2, parse_uint },
+ { "block_group_nr", &set_sb.s_block_group_nr, NULL, 2, parse_uint },
+ { "feature_compat", &set_sb.s_feature_compat, NULL, 4, parse_uint },
+ { "feature_incompat", &set_sb.s_feature_incompat, NULL, 4, parse_uint },
+ { "feature_ro_compat", &set_sb.s_feature_ro_compat, NULL, 4, parse_uint },
+ { "uuid", &set_sb.s_uuid, NULL, 16, parse_uuid },
+ { "volume_name", &set_sb.s_volume_name, NULL, 16, parse_string },
+ { "last_mounted", &set_sb.s_last_mounted, NULL, 64, parse_string },
+ { "lastcheck", &set_sb.s_lastcheck, NULL, 4, parse_uint },
+ { "algorithm_usage_bitmap", &set_sb.s_algorithm_usage_bitmap, NULL,
4, parse_uint },
- { "prealloc_blocks", &set_sb.s_prealloc_blocks, 1, parse_uint },
- { "prealloc_dir_blocks", &set_sb.s_prealloc_dir_blocks, 1,
+ { "prealloc_blocks", &set_sb.s_prealloc_blocks, NULL, 1, parse_uint },
+ { "prealloc_dir_blocks", &set_sb.s_prealloc_dir_blocks, NULL, 1,
parse_uint },
- { "reserved_gdt_blocks", &set_sb.s_reserved_gdt_blocks, 2,
+ { "reserved_gdt_blocks", &set_sb.s_reserved_gdt_blocks, NULL, 2,
parse_uint },
- { "journal_uuid", &set_sb.s_journal_uuid, 16, parse_uuid },
- { "journal_inum", &set_sb.s_journal_inum, 4, parse_uint },
- { "journal_dev", &set_sb.s_journal_dev, 4, parse_uint },
- { "last_orphan", &set_sb.s_last_orphan, 4, parse_uint },
- { "hash_seed", &set_sb.s_hash_seed, 16, parse_uuid },
- { "def_hash_version", &set_sb.s_def_hash_version, 1, parse_hashalg },
- { "jnl_backup_type", &set_sb.s_jnl_backup_type, 1, parse_uint },
- { "desc_size", &set_sb.s_desc_size, 2, parse_uint },
- { "default_mount_opts", &set_sb.s_default_mount_opts, 4, parse_uint },
- { "first_meta_bg", &set_sb.s_first_meta_bg, 4, parse_uint },
- { "mkfs_time", &set_sb.s_mkfs_time, 4, parse_time },
- { "jnl_blocks", &set_sb.s_jnl_blocks[0], 4, parse_uint, FLAG_ARRAY,
+ { "journal_uuid", &set_sb.s_journal_uuid, NULL, 16, parse_uuid },
+ { "journal_inum", &set_sb.s_journal_inum, NULL, 4, parse_uint },
+ { "journal_dev", &set_sb.s_journal_dev, NULL, 4, parse_uint },
+ { "last_orphan", &set_sb.s_last_orphan, NULL, 4, parse_uint },
+ { "hash_seed", &set_sb.s_hash_seed, NULL, 16, parse_uuid },
+ { "def_hash_version", &set_sb.s_def_hash_version, NULL, 1, parse_hashalg },
+ { "jnl_backup_type", &set_sb.s_jnl_backup_type, NULL, 1, parse_uint },
+ { "desc_size", &set_sb.s_desc_size, NULL, 2, parse_uint },
+ { "default_mount_opts", &set_sb.s_default_mount_opts, NULL, 4, parse_uint },
+ { "first_meta_bg", &set_sb.s_first_meta_bg, NULL, 4, parse_uint },
+ { "mkfs_time", &set_sb.s_mkfs_time, NULL, 4, parse_time },
+ { "jnl_blocks", &set_sb.s_jnl_blocks[0], NULL, 4, parse_uint, FLAG_ARRAY,
17 },
- { "blocks_count_hi", &set_sb.s_blocks_count_hi, 4, parse_uint },
- { "r_blocks_count_hi", &set_sb.s_r_blocks_count_hi, 4, parse_uint },
- { "free_blocks_hi", &set_sb.s_free_blocks_hi, 4, parse_uint },
- { "min_extra_isize", &set_sb.s_min_extra_isize, 2, parse_uint },
- { "want_extra_isize", &set_sb.s_want_extra_isize, 2, parse_uint },
- { "flags", &set_sb.s_flags, 4, parse_uint },
- { "raid_stride", &set_sb.s_raid_stride, 2, parse_uint },
- { "min_extra_isize", &set_sb.s_min_extra_isize, 4, parse_uint },
- { "mmp_interval", &set_sb.s_mmp_interval, 2, parse_uint },
- { "mmp_block", &set_sb.s_mmp_block, 8, parse_uint },
- { "raid_stripe_width", &set_sb.s_raid_stripe_width, 4, parse_uint },
- { "log_groups_per_flex", &set_sb.s_log_groups_per_flex, 1, parse_uint },
- { "kbytes_written", &set_sb.s_kbytes_written, 8, parse_uint },
- { "snapshot_inum", &set_sb.s_snapshot_inum, 4, parse_uint },
- { "snapshot_id", &set_sb.s_snapshot_id, 4, parse_uint },
- { "snapshot_r_blocks_count", &set_sb.s_snapshot_r_blocks_count, 8,
- parse_uint },
- { "snapshot_list", &set_sb.s_snapshot_list, 4, parse_uint },
- { "mount_opts", &set_sb.s_mount_opts, 64, parse_string },
- { "usr_quota_inum", &set_sb.s_usr_quota_inum, 4, parse_uint },
- { "grp_quota_inum", &set_sb.s_grp_quota_inum, 4, parse_uint },
- { "overhead_blocks", &set_sb.s_overhead_blocks, 4, parse_uint },
- { "checksum", &set_sb.s_checksum, 4, parse_uint },
+ { "min_extra_isize", &set_sb.s_min_extra_isize, NULL, 2, parse_uint },
+ { "want_extra_isize", &set_sb.s_want_extra_isize, NULL, 2, parse_uint },
+ { "flags", &set_sb.s_flags, NULL, 4, parse_uint },
+ { "raid_stride", &set_sb.s_raid_stride, NULL, 2, parse_uint },
+ { "min_extra_isize", &set_sb.s_min_extra_isize, NULL, 4, parse_uint },
+ { "mmp_interval", &set_sb.s_mmp_interval, NULL, 2, parse_uint },
+ { "mmp_block", &set_sb.s_mmp_block, NULL, 8, parse_uint },
+ { "raid_stripe_width", &set_sb.s_raid_stripe_width, NULL, 4, parse_uint },
+ { "log_groups_per_flex", &set_sb.s_log_groups_per_flex, NULL, 1, parse_uint },
+ { "kbytes_written", &set_sb.s_kbytes_written, NULL, 8, parse_uint },
+ { "snapshot_inum", &set_sb.s_snapshot_inum, NULL, 4, parse_uint },
+ { "snapshot_id", &set_sb.s_snapshot_id, NULL, 4, parse_uint },
+ { "snapshot_r_blocks_count", &set_sb.s_snapshot_r_blocks_count,
+ NULL, 8, parse_uint },
+ { "snapshot_list", &set_sb.s_snapshot_list, NULL, 4, parse_uint },
+ { "mount_opts", &set_sb.s_mount_opts, NULL, 64, parse_string },
+ { "usr_quota_inum", &set_sb.s_usr_quota_inum, NULL, 4, parse_uint },
+ { "grp_quota_inum", &set_sb.s_grp_quota_inum, NULL, 4, parse_uint },
+ { "overhead_blocks", &set_sb.s_overhead_blocks, NULL, 4, parse_uint },
+ { "checksum", &set_sb.s_checksum, NULL, 4, parse_uint },
{ 0, 0, 0, 0 }
};
static struct field_set_info inode_fields[] = {
- { "inodes_count", &set_sb.s_inodes_count, 4, parse_uint },
- { "mode", &set_inode.i_mode, 2, parse_uint },
- { "uid", &set_inode.i_uid, 2, parse_uint },
- { "size", &set_inode.i_size, 4, parse_uint },
- { "atime", &set_inode.i_atime, 4, parse_time },
- { "ctime", &set_inode.i_ctime, 4, parse_time },
- { "mtime", &set_inode.i_mtime, 4, parse_time },
- { "dtime", &set_inode.i_dtime, 4, parse_time },
- { "gid", &set_inode.i_gid, 2, parse_uint },
- { "links_count", &set_inode.i_links_count, 2, parse_uint },
- { "blocks", &set_inode.i_blocks, 4, parse_uint },
- { "flags", &set_inode.i_flags, 4, parse_uint },
- { "version", &set_inode.osd1.linux1.l_i_version, 4, parse_uint },
- { "translator", &set_inode.osd1.hurd1.h_i_translator, 4, parse_uint },
- { "block", &set_inode.i_block[0], 4, parse_uint, FLAG_ARRAY,
+ { "inodes_count", &set_sb.s_inodes_count, NULL, 4, parse_uint },
+ { "mode", &set_inode.i_mode, NULL, 2, parse_uint },
+ { "uid", &set_inode.i_uid, &set_inode.osd2.linux2.l_i_uid_high,
+ 2, parse_uint },
+ { "size", &set_inode.i_size, &set_inode.i_size_high, 4, parse_uint },
+ { "atime", &set_inode.i_atime, NULL, 4, parse_time },
+ { "ctime", &set_inode.i_ctime, NULL, 4, parse_time },
+ { "mtime", &set_inode.i_mtime, NULL, 4, parse_time },
+ { "dtime", &set_inode.i_dtime, NULL, 4, parse_time },
+ { "gid", &set_inode.i_gid, &set_inode.osd2.linux2.l_i_gid_high,
+ 2, parse_uint },
+ { "links_count", &set_inode.i_links_count, NULL, 2, parse_uint },
+ /* Special case: i_blocks is 4 bytes, i_blocks_high is 2 bytes */
+ { "blocks", &set_inode.i_blocks, &set_inode.osd2.linux2.l_i_blocks_hi,
+ 6, parse_uint },
+ { "flags", &set_inode.i_flags, NULL, 4, parse_uint },
+ { "version", &set_inode.osd1.linux1.l_i_version,
+ &set_inode.i_version_hi, 4, parse_uint },
+ { "translator", &set_inode.osd1.hurd1.h_i_translator, NULL, 4, parse_uint },
+ { "block", &set_inode.i_block[0], NULL, 4, parse_uint, FLAG_ARRAY,
EXT2_NDIR_BLOCKS },
- { "block[IND]", &set_inode.i_block[EXT2_IND_BLOCK], 4, parse_uint },
- { "block[DIND]", &set_inode.i_block[EXT2_DIND_BLOCK], 4, parse_uint },
- { "block[TIND]", &set_inode.i_block[EXT2_TIND_BLOCK], 4, parse_uint },
- { "generation", &set_inode.i_generation, 4, parse_uint },
- { "file_acl", &set_inode.i_file_acl, 4, parse_uint },
- { "file_acl_high", &set_inode.osd2.linux2.l_i_file_acl_high, 2,
- parse_uint },
- { "dir_acl", &set_inode.i_dir_acl, 4, parse_uint },
- { "size_high", &set_inode.i_size_high, 4, parse_uint },
- { "faddr", &set_inode.i_faddr, 4, parse_uint },
- { "blocks_hi", &set_inode.osd2.linux2.l_i_blocks_hi, 2, parse_uint },
- { "frag", &set_inode.osd2.hurd2.h_i_frag, 1, parse_uint },
- { "fsize", &set_inode.osd2.hurd2.h_i_fsize, 1, parse_uint },
- { "uid_high", &set_inode.osd2.linux2.l_i_uid_high, 2, parse_uint },
- { "gid_high", &set_inode.osd2.linux2.l_i_gid_high, 2, parse_uint },
- { "checksum", &set_inode.osd2.linux2.l_i_checksum_lo, 2, parse_uint },
- { "author", &set_inode.osd2.hurd2.h_i_author, 4, parse_uint },
- { "bmap", NULL, 4, parse_bmap, FLAG_ARRAY },
+ { "block[IND]", &set_inode.i_block[EXT2_IND_BLOCK], NULL, 4, parse_uint },
+ { "block[DIND]", &set_inode.i_block[EXT2_DIND_BLOCK], NULL, 4, parse_uint },
+ { "block[TIND]", &set_inode.i_block[EXT2_TIND_BLOCK], NULL, 4, parse_uint },
+ { "generation", &set_inode.i_generation, NULL, 4, parse_uint },
+ /* Special case: i_file_acl_high is 2 bytes */
+ { "file_acl", &set_inode.i_file_acl,
+ &set_inode.osd2.linux2.l_i_file_acl_high, 6, parse_uint },
+ { "dir_acl", &set_inode.i_dir_acl, NULL, 4, parse_uint },
+ { "faddr", &set_inode.i_faddr, NULL, 4, parse_uint },
+ { "frag", &set_inode.osd2.hurd2.h_i_frag, NULL, 1, parse_uint },
+ { "fsize", &set_inode.osd2.hurd2.h_i_fsize, NULL, 1, parse_uint },
+ { "checksum", &set_inode.osd2.linux2.l_i_checksum_lo,
+ &set_inode.i_checksum_hi, 2, parse_uint },
+ { "author", &set_inode.osd2.hurd2.h_i_author, NULL,
+ 4, parse_uint },
+ { "extra_isize", &set_inode.i_extra_isize, NULL,
+ 2, parse_uint },
+ { "ctime_extra", &set_inode.i_ctime_extra, NULL,
+ 4, parse_uint },
+ { "mtime_extra", &set_inode.i_mtime_extra, NULL,
+ 4, parse_uint },
+ { "atime_extra", &set_inode.i_atime_extra, NULL,
+ 4, parse_uint },
+ { "crtime", &set_inode.i_crtime, NULL, 4, parse_uint },
+ { "crtime_extra", &set_inode.i_crtime_extra, NULL,
+ 4, parse_uint },
+ { "bmap", NULL, NULL, 4, parse_bmap, FLAG_ARRAY },
{ 0, 0, 0, 0 }
};
static struct field_set_info ext2_bg_fields[] = {
- { "block_bitmap", &set_gd.bg_block_bitmap, 4, parse_uint },
- { "inode_bitmap", &set_gd.bg_inode_bitmap, 4, parse_uint },
- { "inode_table", &set_gd.bg_inode_table, 4, parse_uint },
- { "free_blocks_count", &set_gd.bg_free_blocks_count, 2, parse_uint },
- { "free_inodes_count", &set_gd.bg_free_inodes_count, 2, parse_uint },
- { "used_dirs_count", &set_gd.bg_used_dirs_count, 2, parse_uint },
- { "flags", &set_gd.bg_flags, 2, parse_uint },
- { "itable_unused", &set_gd.bg_itable_unused, 2, parse_uint },
- { "checksum", &set_gd.bg_checksum, 2, parse_gd_csum },
+ { "block_bitmap", &set_gd.bg_block_bitmap, NULL, 4, parse_uint },
+ { "inode_bitmap", &set_gd.bg_inode_bitmap, NULL, 4, parse_uint },
+ { "inode_table", &set_gd.bg_inode_table, NULL, 4, parse_uint },
+ { "free_blocks_count", &set_gd.bg_free_blocks_count, NULL, 2, parse_uint },
+ { "free_inodes_count", &set_gd.bg_free_inodes_count, NULL, 2, parse_uint },
+ { "used_dirs_count", &set_gd.bg_used_dirs_count, NULL, 2, parse_uint },
+ { "flags", &set_gd.bg_flags, NULL, 2, parse_uint },
+ { "itable_unused", &set_gd.bg_itable_unused, NULL, 2, parse_uint },
+ { "checksum", &set_gd.bg_checksum, NULL, 2, parse_gd_csum },
{ 0, 0, 0, 0 }
};
+static struct field_set_info ext4_bg_fields[] = {
+ { "block_bitmap", &set_gd4.bg_block_bitmap,
+ &set_gd4.bg_block_bitmap_hi, 4, parse_uint },
+ { "inode_bitmap", &set_gd4.bg_inode_bitmap,
+ &set_gd4.bg_inode_bitmap_hi, 4, parse_uint },
+ { "inode_table", &set_gd4.bg_inode_table,
+ &set_gd4.bg_inode_table_hi, 4, parse_uint },
+ { "free_blocks_count", &set_gd4.bg_free_blocks_count,
+ &set_gd4.bg_free_blocks_count_hi, 2, parse_uint },
+ { "free_inodes_count", &set_gd4.bg_free_inodes_count,
+ &set_gd4.bg_free_inodes_count_hi, 2, parse_uint },
+ { "used_dirs_count", &set_gd4.bg_used_dirs_count,
+ &set_gd4.bg_used_dirs_count_hi, 2, parse_uint },
+ { "flags", &set_gd4.bg_flags, NULL, 2, parse_uint },
+ { "exclude_bitmap", &set_gd4.bg_exclude_bitmap_lo,
+ &set_gd4.bg_exclude_bitmap_hi, 4, parse_uint },
+ { "block_bitmap_csum", &set_gd4.bg_block_bitmap_csum_lo,
+ &set_gd4.bg_block_bitmap_csum_hi, 2, parse_uint },
+ { "inode_bitmap_csum", &set_gd4.bg_inode_bitmap_csum_lo,
+ &set_gd4.bg_inode_bitmap_csum_hi, 2, parse_uint },
+ { "itable_unused", &set_gd4.bg_itable_unused,
+ &set_gd4.bg_itable_unused_hi, 2, parse_uint },
+ { "checksum", &set_gd4.bg_checksum, NULL, 2, parse_gd_csum },
+ { 0, 0, 0, 0 }
+};
+
+static int check_suffix(const char *field)
+{
+ int len = strlen(field);
+
+ if (len <= 3)
+ return 0;
+ field += len-3;
+ if (!strcmp(field, "_lo"))
+ return 1;
+ if (!strcmp(field, "_hi"))
+ return 2;
+ return 0;
+}
static struct field_set_info *find_field(struct field_set_info *fields,
char *field)
@@ -206,7 +261,7 @@ static struct field_set_info *find_field(struct field_set_info *fields,
struct field_set_info *ss;
const char *prefix;
char *arg, *delim, *idx, *tmp;
- int prefix_len;
+ int suffix, prefix_len;
if (fields == super_fields)
prefix = "s_";
@@ -241,14 +296,23 @@ static struct field_set_info *find_field(struct field_set_info *fields,
idx = 0;
}
+ /*
+ * If there is a valid _hi or a _lo suffix, strip it off
+ */
+ suffix = check_suffix(arg);
+ if (suffix > 0)
+ arg[strlen(arg)-3] = 0;
+
for (ss = fields ; ss->name ; ss++) {
+ if (suffix && ss->ptr2 == 0)
+ continue;
if (ss->flags & FLAG_ARRAY) {
if (!idx || (strcmp(ss->name, arg) != 0))
continue;
if (ss->max_idx > 0 && array_idx >= ss->max_idx)
continue;
} else {
- if (strcmp(ss->name, field) != 0)
+ if (strcmp(ss->name, arg) != 0)
continue;
}
free(arg);
@@ -258,10 +322,19 @@ static struct field_set_info *find_field(struct field_set_info *fields,
return NULL;
}
-static errcode_t parse_uint(struct field_set_info *info, char *arg)
+/*
+ * Note: info->size == 6 is special; this means a base size 4 bytes,
+ * and secondiory (high) size of 2 bytes. This is needed for the
+ * special case of i_blocks_high and i_file_acl_high.
+ */
+static errcode_t parse_uint(struct field_set_info *info, char *field,
+ char *arg)
{
- unsigned long long num, limit;
+ unsigned long long n, num, mask, limit;
+ int suffix = check_suffix(field);
char *tmp;
+ void *field1 = info->ptr, *field2 = info->ptr2;
+ int size = (info->size == 6) ? 4 : info->size;
union {
__u64 *ptr64;
__u32 *ptr32;
@@ -269,7 +342,14 @@ static errcode_t parse_uint(struct field_set_info *info, char *arg)
__u8 *ptr8;
} u;
- u.ptr8 = (__u8 *) info->ptr;
+ if (suffix == 1)
+ field2 = 0;
+ if (suffix == 2) {
+ field1 = field2;
+ field2 = 0;
+ }
+
+ u.ptr8 = (__u8 *) field1;
if (info->flags & FLAG_ARRAY)
u.ptr8 += array_idx * info->size;
@@ -280,30 +360,55 @@ static errcode_t parse_uint(struct field_set_info *info, char *arg)
arg, info->name);
return EINVAL;
}
+ mask = ~0ULL >> ((8 - size) * 8);
limit = ~0ULL >> ((8 - info->size) * 8);
+ if (field2 && info->size != 6)
+ limit = ~0ULL >> ((8 - info->size*2) * 8);
+
if (num > limit) {
fprintf(stderr, "Value '%s' exceeds field %s maximum %llu.\n",
arg, info->name, limit);
return EINVAL;
}
- switch (info->size) {
+ n = num & mask;
+ switch (size) {
case 8:
- *u.ptr64 = num;
+ *u.ptr64 = n;
break;
case 4:
- *u.ptr32 = num;
+ *u.ptr32 = n;
break;
case 2:
- *u.ptr16 = num;
+ *u.ptr16 = n;
break;
case 1:
- *u.ptr8 = num;
+ *u.ptr8 = n;
+ break;
+ }
+ if (!field2)
+ return 0;
+ n = num >> (size*8);
+ u.ptr8 = (__u8 *) field2;
+ if (info->size == 6)
+ size = 2;
+ switch (size) {
+ case 8:
+ *u.ptr64 = n;
+ break;
+ case 4:
+ *u.ptr32 = n;
+ break;
+ case 2:
+ *u.ptr16 = n;
+ break;
+ case 1:
+ *u.ptr8 = n;
break;
}
return 0;
}
-static errcode_t parse_int(struct field_set_info *info, char *arg)
+static errcode_t parse_int(struct field_set_info *info, char *field, char *arg)
{
long num;
char *tmp;
@@ -334,7 +439,8 @@ static errcode_t parse_int(struct field_set_info *info, char *arg)
return 0;
}
-static errcode_t parse_string(struct field_set_info *info, char *arg)
+static errcode_t parse_string(struct field_set_info *info, char *field,
+ char *arg)
{
char *cp = (char *) info->ptr;
@@ -347,7 +453,7 @@ static errcode_t parse_string(struct field_set_info *info, char *arg)
return 0;
}
-static errcode_t parse_time(struct field_set_info *info, char *arg)
+static errcode_t parse_time(struct field_set_info *info, char *field, char *arg)
{
time_t t;
__u32 *ptr32;
@@ -365,7 +471,7 @@ static errcode_t parse_time(struct field_set_info *info, char *arg)
return 0;
}
-static errcode_t parse_uuid(struct field_set_info *info, char *arg)
+static errcode_t parse_uuid(struct field_set_info *info, char *field, char *arg)
{
unsigned char * p = (unsigned char *) info->ptr;
@@ -383,7 +489,8 @@ static errcode_t parse_uuid(struct field_set_info *info, char *arg)
return 0;
}
-static errcode_t parse_hashalg(struct field_set_info *info, char *arg)
+static errcode_t parse_hashalg(struct field_set_info *info, char *field,
+ char *arg)
{
int hashv;
unsigned char *p = (unsigned char *) info->ptr;
@@ -397,7 +504,8 @@ static errcode_t parse_hashalg(struct field_set_info *info, char *arg)
return 0;
}
-static errcode_t parse_bmap(struct field_set_info *info, char *arg)
+static errcode_t parse_bmap(struct field_set_info *info, char *field,
+ char *arg)
{
unsigned long num;
blk_t blk;
@@ -412,15 +520,17 @@ static errcode_t parse_bmap(struct field_set_info *info, char *arg)
}
blk = num;
- retval = ext2fs_bmap(current_fs, set_ino, &set_inode, 0, BMAP_SET,
- array_idx, &blk);
+ retval = ext2fs_bmap(current_fs, set_ino,
+ (struct ext2_inode *) &set_inode,
+ 0, BMAP_SET, array_idx, &blk);
if (retval) {
com_err("set_inode", retval, "while setting block map");
}
return retval;
}
-static errcode_t parse_gd_csum(struct field_set_info *info, char *arg)
+static errcode_t parse_gd_csum(struct field_set_info *info, char *field,
+ char *arg)
{
if (strcmp(arg, "calc") == 0) {
@@ -434,7 +544,7 @@ static errcode_t parse_gd_csum(struct field_set_info *info, char *arg)
return 0;
}
- return parse_uint(info, arg);
+ return parse_uint(info, field, arg);
}
static void print_possible_fields(struct field_set_info *fields)
@@ -474,6 +584,8 @@ static void print_possible_fields(struct field_set_info *fields)
type = "date/time";
else if (ss->func == parse_bmap)
type = "set physical->logical block map";
+ else if (ss->func == parse_gd_csum)
+ type = "unsigned integer OR \"calc\"";
strcpy(name, ss->name);
if (ss->flags & FLAG_ARRAY) {
if (ss->max_idx > 0)
@@ -482,7 +594,9 @@ static void print_possible_fields(struct field_set_info *fields)
strcpy(idx, "[]");
strcat(name, idx);
}
- fprintf(f, "\t%-20s\t%s\n", name, type);
+ if (ss->ptr2)
+ strcat(name, "[_hi|_lo]");
+ fprintf(f, "\t%-25s\t%s\n", name, type);
}
close_pager(f);
}
@@ -509,7 +623,7 @@ void do_set_super(int argc, char *argv[])
return;
}
set_sb = *current_fs->super;
- if (ss->func(ss, argv[2]) == 0) {
+ if (ss->func(ss, argv[1], argv[2]) == 0) {
*current_fs->super = set_sb;
ext2fs_mark_super_dirty(current_fs);
}
@@ -540,11 +654,15 @@ void do_set_inode(int argc, char *argv[])
if (!set_ino)
return;
- if (debugfs_read_inode(set_ino, &set_inode, argv[1]))
+ if (debugfs_read_inode_full(set_ino,
+ (struct ext2_inode *) &set_inode, argv[1],
+ sizeof(set_inode)))
return;
- if (ss->func(ss, argv[3]) == 0) {
- if (debugfs_write_inode(set_ino, &set_inode, argv[1]))
+ if (ss->func(ss, argv[2], argv[3]) == 0) {
+ if (debugfs_write_inode_full(set_ino,
+ (struct ext2_inode *) &set_inode,
+ argv[1], sizeof(set_inode)))
return;
}
}
@@ -554,11 +672,29 @@ void do_set_block_group_descriptor(int argc, char *argv[])
const char *usage = "<bg number> <field> <value>\n"
"\t\"set_block_group_descriptor -l\" will list the names of "
"the fields in a block group descriptor\n\twhich can be set.";
+ struct field_set_info *table;
struct field_set_info *ss;
char *end;
+ void *edit, *target;
+ int size;
+
+ /*
+ *Determine whether we are editing an ext2 or ext4 block
+ * group descriptor
+ */
+ if (current_fs && current_fs->super->s_feature_incompat &
+ EXT4_FEATURE_INCOMPAT_64BIT) {
+ table = ext4_bg_fields;
+ edit = &set_gd4;
+ size = sizeof(set_gd4);
+ } else {
+ table = ext2_bg_fields;
+ edit = &set_gd;
+ size = sizeof(set_gd);
+ }
if ((argc == 2) && !strcmp(argv[1], "-l")) {
- print_possible_fields(ext2_bg_fields);
+ print_possible_fields(table);
return;
}
@@ -577,20 +713,15 @@ void do_set_block_group_descriptor(int argc, char *argv[])
return;
}
-
- if ((ss = find_field(ext2_bg_fields, argv[2])) == 0) {
+ if ((ss = find_field(table, argv[2])) == 0) {
com_err(argv[0], 0, "invalid field specifier: %s", argv[2]);
return;
}
- memcpy(&set_gd, ext2fs_group_desc(current_fs,
- current_fs->group_desc, set_bg),
- sizeof(set_gd));
-
- if (ss->func(ss, argv[3]) == 0) {
- memcpy(ext2fs_group_desc(current_fs,
- current_fs->group_desc, set_bg),
- &set_gd, sizeof(set_gd));
+ target = ext2fs_group_desc(current_fs, current_fs->group_desc, set_bg);
+ memcpy(edit, target, size);
+ if (ss->func(ss, argv[2], argv[3]) == 0) {
+ memcpy(target, edit, size);
ext2fs_mark_super_dirty(current_fs);
}
}
diff --git a/debugfs/util.c b/debugfs/util.c
index c3ac6f8..34fc179 100644
--- a/debugfs/util.c
+++ b/debugfs/util.c
@@ -401,6 +401,22 @@ int debugfs_read_inode(ext2_ino_t ino, struct ext2_inode * inode,
return 0;
}
+int debugfs_write_inode_full(ext2_ino_t ino,
+ struct ext2_inode *inode,
+ const char *cmd,
+ int bufsize)
+{
+ int retval;
+
+ retval = ext2fs_write_inode_full(current_fs, ino,
+ inode, bufsize);
+ if (retval) {
+ com_err(cmd, retval, "while writing inode %u", ino);
+ return 1;
+ }
+ return 0;
+}
+
int debugfs_write_inode(ext2_ino_t ino, struct ext2_inode * inode,
const char *cmd)
{
--
1.7.4.1.22.gec8e1.dirty
--
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