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#!/usr/bin/python3
import btrfs
import os
import sys
if len(sys.argv) < 6 or len(sys.argv[4:]) % 2 != 0:
print("Usage: {} <src> <src_offset> <src_length> <dest> <dest_offset> "
"[<dest> <dest_offset> ...]".format(sys.argv[0]))
sys.exit(1)
src = sys.argv[1]
src_offset = int(sys.argv[2])
src_length = int(sys.argv[3])
if not os.path.isfile(src):
print("{} is not a regular file!".format(src))
sys.exit(1)
dest_names = []
range_infos = []
for n in range(4, len(sys.argv), 2):
dest = sys.argv[n]
if not os.path.isfile(dest):
print("{} is not a regular file!".format(dest))
sys.exit(1)
dest_fd = os.open(dest, os.O_RDONLY)
dest_offset = int(sys.argv[n+1])
info = btrfs.ioctl.FileDedupeRangeInfo(dest_fd, dest_offset)
dest_names.append(dest)
range_infos.append(info)
fd = os.open(src, os.O_RDONLY)
try:
btrfs.ioctl.fideduperange(fd, src_offset, src_length, range_infos)
for dest, info in zip(dest_names, range_infos):
print("dest {} {}".format(dest, info))
finally:
os.close(fd)
for info in range_infos:
os.close(info.dest_fd)
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