[T106][ZXW-22]7520V3SCV2.01.01.02P42U09_VEC_V0.8_AP_VEC origin source commit
Change-Id: Ic6e05d89ecd62fc34f82b23dcf306c93764aec4b
diff --git a/ap/app/e2fsprogs/e2fsprogs-1.42.9/debugfs/set_fields.c b/ap/app/e2fsprogs/e2fsprogs-1.42.9/debugfs/set_fields.c
new file mode 100644
index 0000000..9c3b000
--- /dev/null
+++ b/ap/app/e2fsprogs/e2fsprogs-1.42.9/debugfs/set_fields.c
@@ -0,0 +1,827 @@
+/*
+ * set_fields.c --- set a superblock value
+ *
+ * Copyright (C) 2000, 2001, 2002, 2003, 2004 by Theodore Ts'o.
+ *
+ * %Begin-Header%
+ * This file may be redistributed under the terms of the GNU Public
+ * License.
+ * %End-Header%
+ */
+
+#define _XOPEN_SOURCE 600 /* for inclusion of strptime() and strtoull */
+
+#ifdef HAVE_STRTOULL
+#define STRTOULL strtoull
+#else
+#define STRTOULL strtoul
+#endif
+
+#include "config.h"
+#include <stdio.h>
+#include <unistd.h>
+#include <stdlib.h>
+#include <ctype.h>
+#include <string.h>
+#include <strings.h>
+#include <time.h>
+#include <sys/types.h>
+#include <sys/stat.h>
+#ifdef HAVE_ERRNO_H
+#include <errno.h>
+#endif
+#if HAVE_STRINGS_H
+#include <strings.h>
+#endif
+#include <fcntl.h>
+#include <utime.h>
+
+#include "debugfs.h"
+#include "uuid/uuid.h"
+#include "e2p/e2p.h"
+
+static struct ext2_super_block set_sb;
+static struct ext2_inode_large set_inode;
+static struct ext2_group_desc set_gd;
+static struct ext4_group_desc set_gd4;
+static struct mmp_struct set_mmp;
+static dgrp_t set_bg;
+static ext2_ino_t set_ino;
+static int array_idx;
+
+#define FLAG_ARRAY 0x0001
+
+struct field_set_info {
+ const char *name;
+ void *ptr;
+ void *ptr2;
+ unsigned int size;
+ 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 *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 errcode_t parse_mmp_clear(struct field_set_info *info, char *field,
+ char *arg);
+
+static struct field_set_info super_fields[] = {
+ { "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, 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, 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, NULL, 2,
+ parse_uint },
+ { "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 },
+ { "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_update_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, 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], 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, 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 struct field_set_info mmp_fields[] = {
+ { "clear", &set_mmp.mmp_magic, NULL, sizeof(set_mmp), parse_mmp_clear },
+ { "magic", &set_mmp.mmp_magic, NULL, 4, parse_uint },
+ { "seq", &set_mmp.mmp_seq, NULL, 4, parse_uint },
+ { "time", &set_mmp.mmp_time, NULL, 8, parse_uint },
+ { "nodename", &set_mmp.mmp_nodename, NULL, sizeof(set_mmp.mmp_nodename),
+ parse_string },
+ { "bdevname", &set_mmp.mmp_bdevname, NULL, sizeof(set_mmp.mmp_bdevname),
+ parse_string },
+ { "check_interval", &set_mmp.mmp_check_interval, NULL, 2, parse_uint },
+};
+
+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)
+{
+ struct field_set_info *ss;
+ const char *prefix;
+ char *arg, *delim, *idx, *tmp;
+ int suffix, prefix_len;
+
+ if (fields == super_fields)
+ prefix = "s_";
+ else if (fields == inode_fields)
+ prefix = "i_";
+ else
+ prefix = "bg_";
+ prefix_len = strlen(prefix);
+ if (strncmp(field, prefix, prefix_len) == 0)
+ field += prefix_len;
+
+ arg = malloc(strlen(field)+1);
+ if (!arg)
+ return NULL;
+ strcpy(arg, field);
+
+ idx = strchr(arg, '[');
+ if (idx) {
+ *idx++ = 0;
+ delim = idx + strlen(idx) - 1;
+ if (!*idx || *delim != ']')
+ idx = 0;
+ else
+ *delim = 0;
+ }
+ /*
+ * Can we parse the number?
+ */
+ if (idx) {
+ array_idx = strtol(idx, &tmp, 0);
+ if (*tmp)
+ 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, arg) != 0)
+ continue;
+ }
+ free(arg);
+ return ss;
+ }
+ free(arg);
+ return NULL;
+}
+
+/*
+ * 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 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;
+ __u16 *ptr16;
+ __u8 *ptr8;
+ } u;
+
+ 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;
+
+ errno = 0;
+ num = STRTOULL(arg, &tmp, 0);
+ if (*tmp || errno) {
+ fprintf(stderr, "Couldn't parse '%s' for field %s.\n",
+ 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;
+ }
+ n = num & mask;
+ switch (size) {
+ case 8:
+ /* Should never get here */
+ fprintf(stderr, "64-bit field %s has a second 64-bit field\n"
+ "defined; BUG?!?\n", info->name);
+ *u.ptr64 = 0;
+ break;
+ case 4:
+ *u.ptr32 = n;
+ break;
+ case 2:
+ *u.ptr16 = n;
+ break;
+ case 1:
+ *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 *field EXT2FS_ATTR((unused)), char *arg)
+{
+ long num;
+ char *tmp;
+ __s32 *ptr32;
+ __s16 *ptr16;
+ __s8 *ptr8;
+
+ num = strtol(arg, &tmp, 0);
+ if (*tmp) {
+ fprintf(stderr, "Couldn't parse '%s' for field %s.\n",
+ arg, info->name);
+ return EINVAL;
+ }
+ switch (info->size) {
+ case 4:
+ ptr32 = (__s32 *) info->ptr;
+ *ptr32 = num;
+ break;
+ case 2:
+ ptr16 = (__s16 *) info->ptr;
+ *ptr16 = num;
+ break;
+ case 1:
+ ptr8 = (__s8 *) info->ptr;
+ *ptr8 = num;
+ break;
+ }
+ return 0;
+}
+
+static errcode_t parse_string(struct field_set_info *info,
+ char *field EXT2FS_ATTR((unused)), char *arg)
+{
+ char *cp = (char *) info->ptr;
+
+ if (strlen(arg) >= info->size) {
+ fprintf(stderr, "Error maximum size for %s is %d.\n",
+ info->name, info->size);
+ return EINVAL;
+ }
+ strcpy(cp, arg);
+ return 0;
+}
+
+static errcode_t parse_time(struct field_set_info *info,
+ char *field EXT2FS_ATTR((unused)), char *arg)
+{
+ time_t t;
+ __u32 *ptr32;
+
+ ptr32 = (__u32 *) info->ptr;
+
+ t = string_to_time(arg);
+
+ if (t == ((time_t) -1)) {
+ fprintf(stderr, "Couldn't parse '%s' for field %s.\n",
+ arg, info->name);
+ return EINVAL;
+ }
+ *ptr32 = t;
+ return 0;
+}
+
+static errcode_t parse_uuid(struct field_set_info *info,
+ char *field EXT2FS_ATTR((unused)), char *arg)
+{
+ unsigned char * p = (unsigned char *) info->ptr;
+
+ if ((strcasecmp(arg, "null") == 0) ||
+ (strcasecmp(arg, "clear") == 0)) {
+ uuid_clear(p);
+ } else if (strcasecmp(arg, "time") == 0) {
+ uuid_generate_time(p);
+ } else if (strcasecmp(arg, "random") == 0) {
+ uuid_generate(p);
+ } else if (uuid_parse(arg, p)) {
+ fprintf(stderr, "Invalid UUID format: %s\n", arg);
+ return EINVAL;
+ }
+ return 0;
+}
+
+static errcode_t parse_hashalg(struct field_set_info *info,
+ char *field EXT2FS_ATTR((unused)), char *arg)
+{
+ int hashv;
+ unsigned char *p = (unsigned char *) info->ptr;
+
+ hashv = e2p_string2hash(arg);
+ if (hashv < 0) {
+ fprintf(stderr, "Invalid hash algorithm: %s\n", arg);
+ return EINVAL;
+ }
+ *p = hashv;
+ return 0;
+}
+
+static errcode_t parse_bmap(struct field_set_info *info,
+ char *field EXT2FS_ATTR((unused)), char *arg)
+{
+ blk64_t blk;
+ errcode_t retval;
+ char *tmp;
+
+ blk = strtoull(arg, &tmp, 0);
+ if (*tmp) {
+ fprintf(stderr, "Couldn't parse '%s' for field %s.\n",
+ arg, info->name);
+ return EINVAL;
+ }
+
+ retval = ext2fs_bmap2(current_fs, set_ino,
+ (struct ext2_inode *) &set_inode,
+ NULL, BMAP_SET, array_idx, NULL, &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 *field,
+ char *arg)
+{
+
+ if (strcmp(arg, "calc") == 0) {
+ ext2fs_group_desc_csum_set(current_fs, set_bg);
+ memcpy(&set_gd, ext2fs_group_desc(current_fs,
+ current_fs->group_desc,
+ set_bg),
+ sizeof(set_gd));
+ printf("Checksum set to 0x%04x\n",
+ ext2fs_bg_checksum(current_fs, set_bg));
+ return 0;
+ }
+
+ return parse_uint(info, field, arg);
+}
+
+static void print_possible_fields(struct field_set_info *fields)
+{
+ struct field_set_info *ss;
+ const char *type, *cmd;
+ FILE *f;
+ char name[40], idx[40];
+
+ if (fields == super_fields) {
+ type = "Superblock";
+ cmd = "set_super_value";
+ } else if (fields == inode_fields) {
+ type = "Inode";
+ cmd = "set_inode";
+ } else if (fields == mmp_fields) {
+ type = "MMP";
+ cmd = "set_mmp_value";
+ } else {
+ type = "Block group descriptor";
+ cmd = "set_block_group";
+ }
+ f = open_pager();
+
+ fprintf(f, "%s fields supported by the %s command:\n", type, cmd);
+
+ for (ss = fields ; ss->name ; ss++) {
+ type = "unknown";
+ if (ss->func == parse_string)
+ type = "string";
+ else if (ss->func == parse_int)
+ type = "integer";
+ else if (ss->func == parse_uint)
+ type = "unsigned integer";
+ else if (ss->func == parse_uuid)
+ type = "UUID";
+ else if (ss->func == parse_hashalg)
+ type = "hash algorithm";
+ else if (ss->func == parse_time)
+ 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)
+ sprintf(idx, "[%d]", ss->max_idx);
+ else
+ strcpy(idx, "[]");
+ strcat(name, idx);
+ }
+ if (ss->ptr2)
+ strcat(name, "[_hi|_lo]");
+ fprintf(f, "\t%-25s\t%s\n", name, type);
+ }
+ close_pager(f);
+}
+
+
+void do_set_super(int argc, char *argv[])
+{
+ const char *usage = "<field> <value>\n"
+ "\t\"set_super_value -l\" will list the names of "
+ "superblock fields\n\twhich can be set.";
+ static struct field_set_info *ss;
+
+ if ((argc == 2) && !strcmp(argv[1], "-l")) {
+ print_possible_fields(super_fields);
+ return;
+ }
+
+ if (common_args_process(argc, argv, 3, 3, "set_super_value",
+ usage, CHECK_FS_RW))
+ return;
+
+ if ((ss = find_field(super_fields, argv[1])) == 0) {
+ com_err(argv[0], 0, "invalid field specifier: %s", argv[1]);
+ return;
+ }
+ set_sb = *current_fs->super;
+ if (ss->func(ss, argv[1], argv[2]) == 0) {
+ *current_fs->super = set_sb;
+ ext2fs_mark_super_dirty(current_fs);
+ }
+}
+
+void do_set_inode(int argc, char *argv[])
+{
+ const char *usage = "<inode> <field> <value>\n"
+ "\t\"set_inode_field -l\" will list the names of "
+ "the fields in an ext2 inode\n\twhich can be set.";
+ static struct field_set_info *ss;
+
+ if ((argc == 2) && !strcmp(argv[1], "-l")) {
+ print_possible_fields(inode_fields);
+ return;
+ }
+
+ if (common_args_process(argc, argv, 4, 4, "set_inode",
+ usage, CHECK_FS_RW))
+ return;
+
+ if ((ss = find_field(inode_fields, argv[2])) == 0) {
+ com_err(argv[0], 0, "invalid field specifier: %s", argv[2]);
+ return;
+ }
+
+ set_ino = string_to_inode(argv[1]);
+ if (!set_ino)
+ return;
+
+ if (debugfs_read_inode_full(set_ino,
+ (struct ext2_inode *) &set_inode, argv[1],
+ sizeof(set_inode)))
+ return;
+
+ 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;
+ }
+}
+
+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. Descriptors larger than ext4_group_desc cannot
+ * have their fields edited yet, because they do not have any
+ * names assigned. When that happens, this function needs to
+ * be updated for the new descriptor struct and fields.
+ */
+ if (current_fs &&
+ EXT2_DESC_SIZE(current_fs->super) >= EXT2_MIN_DESC_SIZE_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(table);
+ return;
+ }
+
+ if (common_args_process(argc, argv, 4, 4, "set_block_group_descriptor",
+ usage, CHECK_FS_RW))
+ return;
+
+ set_bg = strtoul(argv[1], &end, 0);
+ if (*end) {
+ com_err(argv[0], 0, "invalid block group number: %s", argv[1]);
+ return;
+ }
+
+ if (set_bg >= current_fs->group_desc_count) {
+ com_err(argv[0], 0, "block group number too big: %d", set_bg);
+ return;
+ }
+
+ if ((ss = find_field(table, argv[2])) == 0) {
+ com_err(argv[0], 0, "invalid field specifier: %s", argv[2]);
+ return;
+ }
+
+ 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);
+ }
+}
+
+static errcode_t parse_mmp_clear(struct field_set_info *info,
+ char *field EXT2FS_ATTR((unused)),
+ char *arg EXT2FS_ATTR((unused)))
+{
+ errcode_t retval;
+
+ retval = ext2fs_mmp_clear(current_fs);
+ if (retval != 0)
+ com_err("set_mmp_value", retval, "while clearing MMP block\n");
+ else
+ memcpy(info->ptr, current_fs->mmp_buf, info->size);
+
+ return 1; /* we don't need the MMP block written again */
+}
+
+void do_set_mmp_value(int argc, char *argv[])
+{
+ const char *usage = "<field> <value>\n"
+ "\t\"set_mmp_value -l\" will list the names of "
+ "MMP fields\n\twhich can be set.";
+ static struct field_set_info *smmp;
+ struct mmp_struct *mmp_s;
+ errcode_t retval;
+
+ if (argc == 2 && strcmp(argv[1], "-l") == 0) {
+ print_possible_fields(mmp_fields);
+ return;
+ }
+
+ if (check_fs_open(argv[0]))
+ return;
+
+ if (current_fs->super->s_mmp_block == 0) {
+ com_err(argv[0], 0, "no MMP block allocated\n");
+ return;
+ }
+
+ if (common_args_process(argc, argv, 2, 3, "set_mmp_value",
+ usage, CHECK_FS_RW))
+ return;
+
+ mmp_s = current_fs->mmp_buf;
+ if (mmp_s == NULL) {
+ retval = ext2fs_get_mem(current_fs->blocksize, &mmp_s);
+ if (retval) {
+ com_err(argv[0], retval, "allocating MMP buffer\n");
+ return;
+ }
+ retval = ext2fs_mmp_read(current_fs,
+ current_fs->super->s_mmp_block, mmp_s);
+ if (retval) {
+ com_err(argv[0], retval, "reading MMP block %llu.\n",
+ (long long)current_fs->super->s_mmp_block);
+ ext2fs_free_mem(&mmp_s);
+ return;
+ }
+ current_fs->mmp_buf = mmp_s;
+ }
+
+ smmp = find_field(mmp_fields, argv[1]);
+ if (smmp == 0) {
+ com_err(argv[0], 0, "invalid field specifier: %s", argv[1]);
+ return;
+ }
+
+ set_mmp = *mmp_s;
+ if (smmp->func(smmp, argv[1], argv[2]) == 0) {
+ ext2fs_mmp_write(current_fs, current_fs->super->s_mmp_block,
+ &set_mmp);
+ *mmp_s = set_mmp;
+ }
+}
+