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#! /usr/bin/env python3
#
# Copyright 2023 by Garmin Ltd. or its subsidiaries
#
# SPDX-License-Identifier: MIT
import sys
import ctypes
import os
import errno
libc = ctypes.CDLL("libc.so.6", use_errno=True)
fsencoding = sys.getfilesystemencoding()
libc.listxattr.argtypes = [ctypes.c_char_p, ctypes.c_char_p, ctypes.c_size_t]
libc.llistxattr.argtypes = [ctypes.c_char_p, ctypes.c_char_p, ctypes.c_size_t]
def listxattr(path, follow=True):
func = libc.listxattr if follow else libc.llistxattr
os_path = os.fsencode(path)
while True:
length = func(os_path, None, 0)
if length < 0:
err = ctypes.get_errno()
raise OSError(err, os.strerror(err), str(path))
if length == 0:
return []
arr = ctypes.create_string_buffer(length)
read_length = func(os_path, arr, length)
if read_length != length:
# Race!
continue
return [a.decode(fsencoding) for a in arr.raw.split(b"\x00") if a]
libc.getxattr.argtypes = [
ctypes.c_char_p,
ctypes.c_char_p,
ctypes.c_char_p,
ctypes.c_size_t,
]
libc.lgetxattr.argtypes = [
ctypes.c_char_p,
ctypes.c_char_p,
ctypes.c_char_p,
ctypes.c_size_t,
]
def getxattr(path, name, follow=True):
func = libc.getxattr if follow else libc.lgetxattr
os_path = os.fsencode(path)
os_name = os.fsencode(name)
while True:
length = func(os_path, os_name, None, 0)
if length < 0:
err = ctypes.get_errno()
if err == errno.ENODATA:
return None
raise OSError(err, os.strerror(err), str(path))
if length == 0:
return ""
arr = ctypes.create_string_buffer(length)
read_length = func(os_path, os_name, arr, length)
if read_length != length:
# Race!
continue
return arr.raw
def get_all_xattr(path, follow=True):
attrs = {}
names = listxattr(path, follow)
for name in names:
value = getxattr(path, name, follow)
if value is None:
# This can happen if a value is erased after listxattr is called,
# so ignore it
continue
attrs[name] = value
return attrs
def main():
import argparse
from pathlib import Path
parser = argparse.ArgumentParser()
parser.add_argument("path", help="File Path", type=Path)
args = parser.parse_args()
attrs = get_all_xattr(args.path)
for name, value in attrs.items():
try:
value = value.decode(fsencoding)
except UnicodeDecodeError:
pass
print(f"{name} = {value}")
return 0
if __name__ == "__main__":
sys.exit(main())
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