|
|
# osutil.py - CFFI version of osutil.c
|
|
|
#
|
|
|
# Copyright 2016 Maciej Fijalkowski <fijall@gmail.com>
|
|
|
#
|
|
|
# This software may be used and distributed according to the terms of the
|
|
|
# GNU General Public License version 2 or any later version.
|
|
|
|
|
|
from __future__ import absolute_import
|
|
|
|
|
|
import os
|
|
|
import stat as statmod
|
|
|
|
|
|
from ..pure.osutil import *
|
|
|
|
|
|
from .. import (
|
|
|
pycompat,
|
|
|
)
|
|
|
|
|
|
if pycompat.isdarwin:
|
|
|
from . import _osutil
|
|
|
|
|
|
ffi = _osutil.ffi
|
|
|
lib = _osutil.lib
|
|
|
|
|
|
listdir_batch_size = 4096
|
|
|
# tweakable number, only affects performance, which chunks
|
|
|
# of bytes do we get back from getattrlistbulk
|
|
|
|
|
|
attrkinds = [None] * 20 # we need the max no for enum VXXX, 20 is plenty
|
|
|
|
|
|
attrkinds[lib.VREG] = statmod.S_IFREG
|
|
|
attrkinds[lib.VDIR] = statmod.S_IFDIR
|
|
|
attrkinds[lib.VLNK] = statmod.S_IFLNK
|
|
|
attrkinds[lib.VBLK] = statmod.S_IFBLK
|
|
|
attrkinds[lib.VCHR] = statmod.S_IFCHR
|
|
|
attrkinds[lib.VFIFO] = statmod.S_IFIFO
|
|
|
attrkinds[lib.VSOCK] = statmod.S_IFSOCK
|
|
|
|
|
|
class stat_res(object):
|
|
|
def __init__(self, st_mode, st_mtime, st_size):
|
|
|
self.st_mode = st_mode
|
|
|
self.st_mtime = st_mtime
|
|
|
self.st_size = st_size
|
|
|
|
|
|
tv_sec_ofs = ffi.offsetof("struct timespec", "tv_sec")
|
|
|
buf = ffi.new("char[]", listdir_batch_size)
|
|
|
|
|
|
def listdirinternal(dfd, req, stat, skip):
|
|
|
ret = []
|
|
|
while True:
|
|
|
r = lib.getattrlistbulk(dfd, req, buf, listdir_batch_size, 0)
|
|
|
if r == 0:
|
|
|
break
|
|
|
if r == -1:
|
|
|
raise OSError(ffi.errno, os.strerror(ffi.errno))
|
|
|
cur = ffi.cast("val_attrs_t*", buf)
|
|
|
for i in range(r):
|
|
|
lgt = cur.length
|
|
|
assert lgt == ffi.cast('uint32_t*', cur)[0]
|
|
|
ofs = cur.name_info.attr_dataoffset
|
|
|
str_lgt = cur.name_info.attr_length
|
|
|
base_ofs = ffi.offsetof('val_attrs_t', 'name_info')
|
|
|
name = str(ffi.buffer(ffi.cast("char*", cur) + base_ofs + ofs,
|
|
|
str_lgt - 1))
|
|
|
tp = attrkinds[cur.obj_type]
|
|
|
if name == "." or name == "..":
|
|
|
continue
|
|
|
if skip == name and tp == statmod.S_ISDIR:
|
|
|
return []
|
|
|
if stat:
|
|
|
mtime = cur.mtime.tv_sec
|
|
|
mode = (cur.accessmask & ~lib.S_IFMT)| tp
|
|
|
ret.append((name, tp, stat_res(st_mode=mode, st_mtime=mtime,
|
|
|
st_size=cur.datalength)))
|
|
|
else:
|
|
|
ret.append((name, tp))
|
|
|
cur = ffi.cast("val_attrs_t*", int(ffi.cast("intptr_t", cur))
|
|
|
+ lgt)
|
|
|
return ret
|
|
|
|
|
|
def listdir(path, stat=False, skip=None):
|
|
|
req = ffi.new("struct attrlist*")
|
|
|
req.bitmapcount = lib.ATTR_BIT_MAP_COUNT
|
|
|
req.commonattr = (lib.ATTR_CMN_RETURNED_ATTRS |
|
|
|
lib.ATTR_CMN_NAME |
|
|
|
lib.ATTR_CMN_OBJTYPE |
|
|
|
lib.ATTR_CMN_ACCESSMASK |
|
|
|
lib.ATTR_CMN_MODTIME)
|
|
|
req.fileattr = lib.ATTR_FILE_DATALENGTH
|
|
|
dfd = lib.open(path, lib.O_RDONLY, 0)
|
|
|
if dfd == -1:
|
|
|
raise OSError(ffi.errno, os.strerror(ffi.errno))
|
|
|
|
|
|
try:
|
|
|
ret = listdirinternal(dfd, req, stat, skip)
|
|
|
finally:
|
|
|
try:
|
|
|
lib.close(dfd)
|
|
|
except BaseException:
|
|
|
pass # we ignore all the errors from closing, not
|
|
|
# much we can do about that
|
|
|
return ret
|
|
|
|
