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import os
import sys
try:
from ._lib import lib, ffi
except ImportError:
from .lib_build import ffi, C_SRC
lib = ffi.verify(C_SRC)
XATTR_NOFOLLOW = lib.XATTR_XATTR_NOFOLLOW
XATTR_CREATE = lib.XATTR_XATTR_CREATE
XATTR_REPLACE = lib.XATTR_XATTR_REPLACE
XATTR_NOSECURITY = lib.XATTR_XATTR_NOSECURITY
XATTR_MAXNAMELEN = lib.XATTR_MAXNAMELEN
XATTR_FINDERINFO_NAME = "com.apple.FinderInfo"
XATTR_RESOURCEFORK_NAME = "com.apple.ResourceFork"
try:
fs_encode = os.fsencode
except AttributeError:
def fs_encode(val):
encoding = sys.getfilesystemencoding()
if encoding == 'mbcs':
errors = 'strict'
else:
errors = 'surrogateescape'
if not isinstance(val, bytes):
return val.encode(encoding, errors)
else:
return val
def _check_bytes(val):
if not isinstance(val, bytes):
raise TypeError(
"Value must be bytes, %s was passed." % type(val).__name__
)
def error(path=None):
errno = ffi.errno
strerror = os.strerror(ffi.errno)
if path:
raise IOError(errno, strerror, path)
else:
raise IOError(errno, strerror)
def _getxattr(path, name, size=0, position=0, options=0):
"""
getxattr(path, name, size=0, position=0, options=0) -> str
"""
path = fs_encode(path)
name = fs_encode(name)
if size == 0:
res = lib.xattr_getxattr(path, name, ffi.NULL, 0, position, options)
if res == -1:
raise error(path)
size = res
buf = ffi.new("char[]", size)
res = lib.xattr_getxattr(path, name, buf, size, position, options)
if res == -1:
raise error(path)
return ffi.buffer(buf)[:res]
def _fgetxattr(fd, name, size=0, position=0, options=0):
"""
fgetxattr(fd, name, size=0, position=0, options=0) -> str
"""
name = fs_encode(name)
if size == 0:
res = lib.xattr_fgetxattr(fd, name, ffi.NULL, 0, position, options)
if res == -1:
raise error()
size = res
buf = ffi.new("char[]", size)
res = lib.xattr_fgetxattr(fd, name, buf, size, position, options)
if res == -1:
raise error()
return ffi.buffer(buf)[:res]
def _setxattr(path, name, value, position=0, options=0):
"""
setxattr(path, name, value, position=0, options=0) -> None
"""
_check_bytes(value)
path = fs_encode(path)
name = fs_encode(name)
res = lib.xattr_setxattr(path, name, value, len(value), position, options)
if res:
raise error(path)
def _fsetxattr(fd, name, value, position=0, options=0):
"""
fsetxattr(fd, name, value, position=0, options=0) -> None
"""
_check_bytes(value)
name = fs_encode(name)
res = lib.xattr_fsetxattr(fd, name, value, len(value), position, options)
if res:
raise error()
def _removexattr(path, name, options=0):
"""
removexattr(path, name, options=0) -> None
"""
path = fs_encode(path)
name = fs_encode(name)
res = lib.xattr_removexattr(path, name, options)
if res:
raise error(path)
def _fremovexattr(fd, name, options=0):
"""
fremovexattr(fd, name, options=0) -> None
"""
name = fs_encode(name)
res = lib.xattr_fremovexattr(fd, name, options)
if res:
raise error()
def _listxattr(path, options=0):
"""
listxattr(path, options=0) -> str
"""
path = fs_encode(path)
res = lib.xattr_listxattr(path, ffi.NULL, 0, options)
if res == -1:
raise error(path)
elif res == 0:
return b""
buf = ffi.new("char[]", res)
res = lib.xattr_listxattr(path, buf, res, options)
if res == -1:
raise error(path)
return ffi.buffer(buf)[:res]
def _flistxattr(fd, options=0):
"""
flistxattr(fd, options=0) -> str
"""
res = lib.xattr_flistxattr(fd, ffi.NULL, 0, options)
if res == -1:
raise error()
buf = ffi.new("char[]", res)
res = lib.xattr_flistxattr(fd, buf, res, options)
if res == -1:
raise error()
return ffi.buffer(buf)[:res]
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