mirror of
git://git.yoctoproject.org/poky.git
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871a4ac6e7
Adds Python wrappers around the xattr API from libc and the ACL API from libacl. (Bitbake rev: 538011256964d0253f8e3ab7ff1d6fd62c7c2f89) Signed-off-by: Joshua Watt <JPEWhacker@gmail.com> Signed-off-by: Richard Purdie <richard.purdie@linuxfoundation.org>
127 lines
2.7 KiB
Python
Executable File
127 lines
2.7 KiB
Python
Executable File
#! /usr/bin/env python3
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#
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# Copyright 2023 by Garmin Ltd. or its subsidiaries
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#
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# SPDX-License-Identifier: MIT
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import sys
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import ctypes
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import os
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import errno
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libc = ctypes.CDLL("libc.so.6", use_errno=True)
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fsencoding = sys.getfilesystemencoding()
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libc.listxattr.argtypes = [ctypes.c_char_p, ctypes.c_char_p, ctypes.c_size_t]
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libc.llistxattr.argtypes = [ctypes.c_char_p, ctypes.c_char_p, ctypes.c_size_t]
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def listxattr(path, follow=True):
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func = libc.listxattr if follow else libc.llistxattr
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os_path = os.fsencode(path)
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while True:
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length = func(os_path, None, 0)
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if length < 0:
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err = ctypes.get_errno()
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raise OSError(err, os.strerror(err), str(path))
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if length == 0:
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return []
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arr = ctypes.create_string_buffer(length)
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read_length = func(os_path, arr, length)
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if read_length != length:
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# Race!
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continue
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return [a.decode(fsencoding) for a in arr.raw.split(b"\x00") if a]
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libc.getxattr.argtypes = [
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ctypes.c_char_p,
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ctypes.c_char_p,
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ctypes.c_char_p,
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ctypes.c_size_t,
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]
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libc.lgetxattr.argtypes = [
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ctypes.c_char_p,
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ctypes.c_char_p,
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ctypes.c_char_p,
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ctypes.c_size_t,
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]
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def getxattr(path, name, follow=True):
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func = libc.getxattr if follow else libc.lgetxattr
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os_path = os.fsencode(path)
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os_name = os.fsencode(name)
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while True:
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length = func(os_path, os_name, None, 0)
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if length < 0:
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err = ctypes.get_errno()
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if err == errno.ENODATA:
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return None
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raise OSError(err, os.strerror(err), str(path))
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if length == 0:
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return ""
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arr = ctypes.create_string_buffer(length)
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read_length = func(os_path, os_name, arr, length)
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if read_length != length:
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# Race!
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continue
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return arr.raw
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def get_all_xattr(path, follow=True):
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attrs = {}
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names = listxattr(path, follow)
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for name in names:
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value = getxattr(path, name, follow)
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if value is None:
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# This can happen if a value is erased after listxattr is called,
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# so ignore it
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continue
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attrs[name] = value
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return attrs
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def main():
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import argparse
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from pathlib import Path
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parser = argparse.ArgumentParser()
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parser.add_argument("path", help="File Path", type=Path)
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args = parser.parse_args()
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attrs = get_all_xattr(args.path)
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for name, value in attrs.items():
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try:
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value = value.decode(fsencoding)
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except UnicodeDecodeError:
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pass
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print(f"{name} = {value}")
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return 0
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if __name__ == "__main__":
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sys.exit(main())
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