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#!/usr/bin/python3
import btrfs
import os
import sys
if len(sys.argv) < 2:
print("Usage: {} <file>".format(sys.argv[0]))
sys.exit(1)
filename = sys.argv[1]
if not os.path.isfile(filename):
print("{} is not a regular file!".format(filename))
sys.exit(1)
inum = os.stat(filename).st_ino
fd = os.open(filename, os.O_RDONLY)
tree, _ = btrfs.ioctl.ino_lookup(fd, objectid=inum)
print("filename {} tree {} inum {}".format(filename, tree, inum))
min_key = btrfs.ctree.Key(inum, 0, 0)
max_key = btrfs.ctree.Key(inum + 1, 0, 0) - 1
for header, data in btrfs.ioctl.search_v2(fd, tree, min_key, max_key):
if header.type == btrfs.ctree.INODE_ITEM_KEY:
print(btrfs.ctree.InodeItem(header, data))
elif header.type == btrfs.ctree.INODE_REF_KEY:
inode_ref_list = btrfs.ctree.InodeRefList(header, data)
print(inode_ref_list)
for inode_ref in inode_ref_list:
print(" {}".format(inode_ref))
elif header.type == btrfs.ctree.INODE_EXTREF_KEY:
inode_extref_list = btrfs.ctree.InodeExtrefList(header, data)
print(inode_extref_list)
for inode_extref in inode_extref_list:
print(" {}".format(inode_extref))
elif header.type == btrfs.ctree.XATTR_ITEM_KEY:
xattr_item_list = btrfs.ctree.XAttrItemList(header, data)
print(xattr_item_list)
for xattr_item in xattr_item_list:
print(" {}".format(xattr_item))
elif header.type == btrfs.ctree.EXTENT_DATA_KEY:
print(btrfs.ctree.FileExtentItem(header, data))
else:
raise Exception("Whoa, key {}".format(btrfs.ctree.key_type_str(header.type)))
os.close(fd)
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