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btrfs-progs: corrupt-block: update help text

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The help text is out of sync with many options, lacking the long
options, required arguments or mistakenly requiring arguments when the
value is read from another one.

Signed-off-by: David Sterba <dsterba@suse.com>
This commit is contained in:
David Sterba 2022-07-27 23:30:24 +02:00
parent b4c8b9054d
commit 468ad6b9b8
1 changed files with 43 additions and 20 deletions
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63
btrfs-corrupt-block.c
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@ -86,26 +86,49 @@ static int debug_corrupt_block(struct extent_buffer *eb,
static void print_usage(int ret)
{
printf("usage: btrfs-corrupt-block [options] device\n");
printf("\t-l Logical extent to be corrupted\n");
printf("\t-c Copy of the extent to be corrupted (usually 1 or 2, default: 0)\n");
printf("\t-b Number of bytes to be corrupted\n");
printf("\t-e Extent to be corrupted\n");
printf("\t-E The whole extent tree to be corrupted\n");
printf("\t-u Given chunk item to be corrupted\n");
printf("\t-U The whole chunk tree to be corrupted\n");
printf("\t-i The inode item to corrupt (must also specify the field to corrupt)\n");
printf("\t-x The file extent item to corrupt (must also specify -i for the inode and -f for the field to corrupt)\n");
printf("\t-m The metadata block to corrupt (must also specify -f for the field to corrupt)\n");
printf("\t-K <u64,u8,u64> Corrupt the given key (must also specify -f for the field and optionally -r for the root)\n");
printf("\t-f The field in the item to corrupt\n");
printf("\t-I <u64,u8,u64> Corrupt an item corresponding to the passed key triplet (must also specify the field, or a (bytes, offset, value) tuple to corrupt and root for the item)\n");
printf("\t-D <u64,u8,u64> Corrupt a dir item corresponding to the passed key triplet, must also specify a field\n");
printf("\t-d <u64,u8,u64> Delete item corresponding to passed key triplet\n");
printf("\t-r Operate on this root\n");
printf("\t-C Delete a csum for the specified bytenr. When used with -b it'll delete that many bytes, otherwise it's just sectorsize\n");
printf("\t--block-group OFFSET corrupt the given block group\n");
printf("\t--value VALUE Value to use for corrupting item data\n");
printf("\t--offset OFFSET Offset to use for corrupting item data\n");
printf("\n");
printf("Corrupt data structures on a btrfs filesystem. For testing only!\n");
printf("\n");
printf(" -l EXTENT\n");
printf(" --logical EXTENT logical extent to be corrupted\n");
printf(" -c COPY\n");
printf(" --copy COPY copy of the extent to be corrupted (usually 1 or 2, default: 0)\n");
printf(" -b COUNT\n");
printf(" --bytes COUNT number of bytes to be corrupted\n");
printf(" -e\n");
printf(" --extent-record corrupt the extent\n");
printf(" -E\n");
printf(" --extent-tree corrupt the whole extent tree\n");
printf(" -u\n");
printf(" --chunk-record corrupt the given chunk\n");
printf(" -U\n");
printf(" --chunk-tree corrupt the whole whole chunk tree\n");
printf(" -i INODE\n");
printf(" --inode INODE inode number to corrupt (must also specify the field to corrupt)\n");
printf(" -x EXTENT\n");
printf(" --file-extent EXTENT file extent item to corrupt (must also specify -i for the inode and -f for the field to corrupt)\n");
printf(" -m BLOCK\n");
printf(" --metadata-block BLOCK\n");
printf(" metadata block to corrupt (must also specify -f for the field to corrupt)\n");
printf(" -k\n");
printf(" --keys corrupt block keys (set by --logical)\n");
printf(" -K <u64,u8,u64>\n");
printf(" --key <u64,u8,u64> corrupt the given key (must also specify -f for the field and optionally -r for the root)\n");
printf(" -f FIELD\n");
printf(" --field FIELD field name in the item to corrupt\n");
printf(" -I\n");
printf(" --item corrupt an item corresponding to the passed key triplet (must also specify the field, or a (bytes, offset, value) tuple to corrupt and root for the item)\n");
printf(" -D\n");
printf(" --dir-item corrupt a dir item corresponding to the passed key triplet, must also specify a field\n");
printf(" -d\n");
printf(" --delete delete item corresponding to passed key triplet\n");
printf(" -r\n");
printf(" --root operate on this root\n");
printf(" -C BYTENR\n");
printf(" --csum BYTENR delete a csum for the specified bytenr. When used with -b it'll delete that many bytes, otherwise it's just sectorsize\n");
printf(" --block-group OFFSET corrupt the given block group\n");
printf(" --value VALUE value to use for corrupting item data\n");
printf(" --offset OFFSET offset to use for corrupting item data\n");
exit(ret);
}