105
106
mod = os.lstat(filename).st_mode
106
107
if not stat.S_ISLNK(mod):
107
108
mod = mod & 0777555
108
os.chmod(filename, mod)
109
chmod_if_possible(filename, mod)
111
112
def make_writable(filename):
112
113
mod = os.lstat(filename).st_mode
113
114
if not stat.S_ISLNK(mod):
115
os.chmod(filename, mod)
116
chmod_if_possible(filename, mod)
119
def chmod_if_possible(filename, mode):
120
# Set file mode if that can be safely done.
121
# Sometimes even on unix the filesystem won't allow it - see
122
# https://bugs.launchpad.net/bzr/+bug/606537
124
# It is probably faster to just do the chmod, rather than
125
# doing a stat, and then trying to compare
126
os.chmod(filename, mode)
127
except (IOError, OSError),e:
128
# Permission/access denied seems to commonly happen on smbfs; there's
129
# probably no point warning about it.
130
# <https://bugs.launchpad.net/bzr/+bug/606537>
131
if getattr(e, 'errno') in (errno.EPERM, errno.EACCES):
132
trace.mutter("ignore error on chmod of %r: %r" % (
118
138
def minimum_path_selection(paths):
270
290
rename_func(tmp_name, new)
271
291
if failure_exc is not None:
272
raise failure_exc[0], failure_exc[1], failure_exc[2]
293
raise failure_exc[0], failure_exc[1], failure_exc[2]
275
298
# In Python 2.4.2 and older, os.path.abspath and os.path.realpath
276
299
# choke on a Unicode string containing a relative path if
277
300
# os.getcwd() returns a non-sys.getdefaultencoding()-encoded
279
_fs_enc = sys.getfilesystemencoding() or 'utf-8'
280
302
def _posix_abspath(path):
281
303
# jam 20060426 rather than encoding to fsencoding
282
304
# copy posixpath.abspath, but use os.getcwdu instead
283
305
if not posixpath.isabs(path):
284
306
path = posixpath.join(getcwd(), path)
285
return posixpath.normpath(path)
307
return _posix_normpath(path)
288
310
def _posix_realpath(path):
289
311
return posixpath.realpath(path.encode(_fs_enc)).decode(_fs_enc)
314
def _posix_normpath(path):
315
path = posixpath.normpath(path)
316
# Bug 861008: posixpath.normpath() returns a path normalized according to
317
# the POSIX standard, which stipulates (for compatibility reasons) that two
318
# leading slashes must not be simplified to one, and only if there are 3 or
319
# more should they be simplified as one. So we treat the leading 2 slashes
320
# as a special case here by simply removing the first slash, as we consider
321
# that breaking POSIX compatibility for this obscure feature is acceptable.
322
# This is not a paranoid precaution, as we notably get paths like this when
323
# the repo is hosted at the root of the filesystem, i.e. in "/".
324
if path.startswith('//'):
329
def _posix_path_from_environ(key):
330
"""Get unicode path from `key` in environment or None if not present
332
Note that posix systems use arbitrary byte strings for filesystem objects,
333
so a path that raises BadFilenameEncoding here may still be accessible.
335
val = os.environ.get(key, None)
339
return val.decode(_fs_enc)
340
except UnicodeDecodeError:
341
# GZ 2011-12-12:Ideally want to include `key` in the exception message
342
raise errors.BadFilenameEncoding(val, _fs_enc)
345
def _posix_get_home_dir():
346
"""Get the home directory of the current user as a unicode path"""
347
path = posixpath.expanduser("~")
349
return path.decode(_fs_enc)
350
except UnicodeDecodeError:
351
raise errors.BadFilenameEncoding(path, _fs_enc)
354
def _posix_getuser_unicode():
355
"""Get username from environment or password database as unicode"""
356
name = getpass.getuser()
357
user_encoding = get_user_encoding()
359
return name.decode(user_encoding)
360
except UnicodeDecodeError:
361
raise errors.BzrError("Encoding of username %r is unsupported by %s "
362
"application locale." % (name, user_encoding))
292
365
def _win32_fixdrive(path):
293
366
"""Force drive letters to be consistent.
377
450
return unicodedata.normalize('NFC', os.getcwdu())
453
def _rename_wrap_exception(rename_func):
454
"""Adds extra information to any exceptions that come from rename().
456
The exception has an updated message and 'old_filename' and 'new_filename'
460
def _rename_wrapper(old, new):
462
rename_func(old, new)
464
detailed_error = OSError(e.errno, e.strerror +
465
" [occurred when renaming '%s' to '%s']" %
467
detailed_error.old_filename = old
468
detailed_error.new_filename = new
471
return _rename_wrapper
473
# Default rename wraps os.rename()
474
rename = _rename_wrap_exception(os.rename)
380
476
# Default is to just use the python builtins, but these can be rebound on
381
477
# particular platforms.
382
478
abspath = _posix_abspath
383
479
realpath = _posix_realpath
384
480
pathjoin = os.path.join
385
normpath = os.path.normpath
481
normpath = _posix_normpath
482
path_from_environ = _posix_path_from_environ
483
_get_home_dir = _posix_get_home_dir
484
getuser_unicode = _posix_getuser_unicode
386
485
getcwd = os.getcwdu
388
486
dirname = os.path.dirname
389
487
basename = os.path.basename
390
488
split = os.path.split
867
982
return os.fstat(f.fileno())[stat.ST_SIZE]
870
# Define rand_bytes based on platform.
872
# Python 2.4 and later have os.urandom,
873
# but it doesn't work on some arches
875
rand_bytes = os.urandom
876
except (NotImplementedError, AttributeError):
877
# If python doesn't have os.urandom, or it doesn't work,
878
# then try to first pull random data from /dev/urandom
985
# Alias os.urandom to support platforms (which?) without /dev/urandom and
986
# override if it doesn't work. Avoid checking on windows where there is
987
# significant initialisation cost that can be avoided for some bzr calls.
989
rand_bytes = os.urandom
991
if rand_bytes.__module__ != "nt":
880
rand_bytes = file('/dev/urandom', 'rb').read
881
# Otherwise, use this hack as a last resort
882
except (IOError, OSError):
994
except NotImplementedError:
883
995
# not well seeded, but better than nothing
884
996
def rand_bytes(n):
1904
2013
_cached_user_encoding = None
1907
def get_user_encoding(use_cache=True):
2016
def get_user_encoding(use_cache=DEPRECATED_PARAMETER):
1908
2017
"""Find out what the preferred user encoding is.
1910
2019
This is generally the encoding that is used for command line parameters
1911
2020
and file contents. This may be different from the terminal encoding
1912
2021
or the filesystem encoding.
1914
:param use_cache: Enable cache for detected encoding.
1915
(This parameter is turned on by default,
1916
and required only for selftesting)
1918
2023
:return: A string defining the preferred user encoding
1920
2025
global _cached_user_encoding
1921
if _cached_user_encoding is not None and use_cache:
2026
if deprecated_passed(use_cache):
2027
warn_deprecated("use_cache should only have been used for tests",
2028
DeprecationWarning, stacklevel=2)
2029
if _cached_user_encoding is not None:
1922
2030
return _cached_user_encoding
1924
if sys.platform == 'darwin':
1925
# python locale.getpreferredencoding() always return
1926
# 'mac-roman' on darwin. That's a lie.
1927
sys.platform = 'posix'
1929
if os.environ.get('LANG', None) is None:
1930
# If LANG is not set, we end up with 'ascii', which is bad
1931
# ('mac-roman' is more than ascii), so we set a default which
1932
# will give us UTF-8 (which appears to work in all cases on
1933
# OSX). Users are still free to override LANG of course, as
1934
# long as it give us something meaningful. This work-around
1935
# *may* not be needed with python 3k and/or OSX 10.5, but will
1936
# work with them too -- vila 20080908
1937
os.environ['LANG'] = 'en_US.UTF-8'
1940
sys.platform = 'darwin'
2032
if os.name == 'posix' and getattr(locale, 'CODESET', None) is not None:
2033
# Use the existing locale settings and call nl_langinfo directly
2034
# rather than going through getpreferredencoding. This avoids
2035
# <http://bugs.python.org/issue6202> on OSX Python 2.6 and the
2036
# possibility of the setlocale call throwing an error.
2037
user_encoding = locale.nl_langinfo(locale.CODESET)
2039
# GZ 2011-12-19: On windows could call GetACP directly instead.
2040
user_encoding = locale.getpreferredencoding(False)
1945
user_encoding = locale.getpreferredencoding()
1946
except locale.Error, e:
1947
sys.stderr.write('bzr: warning: %s\n'
1948
' Could not determine what text encoding to use.\n'
1949
' This error usually means your Python interpreter\n'
1950
' doesn\'t support the locale set by $LANG (%s)\n'
1951
" Continuing with ascii encoding.\n"
1952
% (e, os.environ.get('LANG')))
1953
user_encoding = 'ascii'
1955
# Windows returns 'cp0' to indicate there is no code page. So we'll just
1956
# treat that as ASCII, and not support printing unicode characters to the
1959
# For python scripts run under vim, we get '', so also treat that as ASCII
1960
if user_encoding in (None, 'cp0', ''):
1961
user_encoding = 'ascii'
1965
codecs.lookup(user_encoding)
2043
user_encoding = codecs.lookup(user_encoding).name
2045
if user_encoding not in ("", "cp0"):
1967
2046
sys.stderr.write('bzr: warning:'
1968
2047
' unknown encoding %s.'
1969
2048
' Continuing with ascii encoding.\n'
1970
2049
% user_encoding
1972
user_encoding = 'ascii'
1975
_cached_user_encoding = user_encoding
2051
user_encoding = 'ascii'
2053
# Get 'ascii' when setlocale has not been called or LANG=C or unset.
2054
if user_encoding == 'ascii':
2055
if sys.platform == 'darwin':
2056
# OSX is special-cased in Python to have a UTF-8 filesystem
2057
# encoding and previously had LANG set here if not present.
2058
user_encoding = 'utf-8'
2059
# GZ 2011-12-19: Maybe UTF-8 should be the default in this case
2060
# for some other posix platforms as well.
2062
_cached_user_encoding = user_encoding
1977
2063
return user_encoding
2073
2158
while sent_total < byte_count:
2075
2160
sent = sock.send(buffer(bytes, sent_total, MAX_SOCKET_CHUNK))
2076
except socket.error, e:
2161
except (socket.error, IOError), e:
2162
if e.args[0] in _end_of_stream_errors:
2163
raise errors.ConnectionReset(
2164
"Error trying to write to socket", e)
2077
2165
if e.args[0] != errno.EINTR:
2169
raise errors.ConnectionReset('Sending to %s returned 0 bytes'
2080
2171
sent_total += sent
2081
report_activity(sent, 'write')
2172
if report_activity is not None:
2173
report_activity(sent, 'write')
2084
2176
def connect_socket(address):
2169
2261
return file_kind_from_stat_mode(mode)
2170
2262
file_kind_from_stat_mode = file_kind_from_stat_mode_thunk
2173
def file_kind(f, _lstat=os.lstat):
2264
def file_stat(f, _lstat=os.lstat):
2175
return file_kind_from_stat_mode(_lstat(f).st_mode)
2176
2268
except OSError, e:
2177
2269
if getattr(e, 'errno', None) in (errno.ENOENT, errno.ENOTDIR):
2178
2270
raise errors.NoSuchFile(f)
2273
def file_kind(f, _lstat=os.lstat):
2274
stat_value = file_stat(f, _lstat)
2275
return file_kind_from_stat_mode(stat_value.st_mode)
2182
2277
def until_no_eintr(f, *a, **kw):
2183
2278
"""Run f(*a, **kw), retrying if an EINTR error occurs.
2243
2338
termios.tcsetattr(fd, termios.TCSADRAIN, settings)
2247
if sys.platform == 'linux2':
2341
if sys.platform.startswith('linux'):
2248
2342
def _local_concurrency():
2250
prefix = 'processor'
2251
for line in file('/proc/cpuinfo', 'rb'):
2252
if line.startswith(prefix):
2253
concurrency = int(line[line.find(':')+1:]) + 1
2344
return os.sysconf('SC_NPROCESSORS_ONLN')
2345
except (ValueError, OSError, AttributeError):
2255
2347
elif sys.platform == 'darwin':
2256
2348
def _local_concurrency():
2257
2349
return subprocess.Popen(['sysctl', '-n', 'hw.availcpu'],
2258
2350
stdout=subprocess.PIPE).communicate()[0]
2259
elif sys.platform[0:7] == 'freebsd':
2351
elif "bsd" in sys.platform:
2260
2352
def _local_concurrency():
2261
2353
return subprocess.Popen(['sysctl', '-n', 'hw.ncpu'],
2262
2354
stdout=subprocess.PIPE).communicate()[0]
2290
2382
concurrency = os.environ.get('BZR_CONCURRENCY', None)
2291
2383
if concurrency is None:
2293
concurrency = _local_concurrency()
2294
except (OSError, IOError):
2385
import multiprocessing
2386
concurrency = multiprocessing.cpu_count()
2387
except (ImportError, NotImplementedError):
2388
# multiprocessing is only available on Python >= 2.6
2389
# and multiprocessing.cpu_count() isn't implemented on all
2392
concurrency = _local_concurrency()
2393
except (OSError, IOError):
2297
2396
concurrency = int(concurrency)
2298
2397
except (TypeError, ValueError):
2435
f = os.path.join(d, name) + ext
2436
if os.access(f, os.X_OK):
2516
path = os.environ.get('PATH')
2517
if path is not None:
2518
path = path.split(os.pathsep)
2521
f = os.path.join(d, name) + ext
2522
if os.access(f, os.X_OK):
2524
if sys.platform == 'win32':
2525
app_path = win32utils.get_app_path(name)
2526
if app_path != name:
2531
def _posix_is_local_pid_dead(pid):
2532
"""True if pid doesn't correspond to live process on this machine"""
2534
# Special meaning of unix kill: just check if it's there.
2537
if e.errno == errno.ESRCH:
2538
# On this machine, and really not found: as sure as we can be
2541
elif e.errno == errno.EPERM:
2542
# exists, though not ours
2545
mutter("os.kill(%d, 0) failed: %s" % (pid, e))
2546
# Don't really know.
2549
# Exists and our process: not dead.
2552
if sys.platform == "win32":
2553
is_local_pid_dead = win32utils.is_local_pid_dead
2555
is_local_pid_dead = _posix_is_local_pid_dead
2557
_maybe_ignored = ['EAGAIN', 'EINTR', 'ENOTSUP', 'EOPNOTSUPP', 'EACCES']
2558
_fdatasync_ignored = [getattr(errno, name) for name in _maybe_ignored
2559
if getattr(errno, name, None) is not None]
2562
def fdatasync(fileno):
2563
"""Flush file contents to disk if possible.
2565
:param fileno: Integer OS file handle.
2566
:raises TransportNotPossible: If flushing to disk is not possible.
2568
fn = getattr(os, 'fdatasync', getattr(os, 'fsync', None))
2573
# See bug #1075108, on some platforms fdatasync exists, but can
2574
# raise ENOTSUP. However, we are calling fdatasync to be helpful
2575
# and reduce the chance of corruption-on-powerloss situations. It
2576
# is not a mandatory call, so it is ok to suppress failures.
2577
trace.mutter("ignoring error calling fdatasync: %s" % (e,))
2578
if getattr(e, 'errno', None) not in _fdatasync_ignored:
2582
def ensure_empty_directory_exists(path, exception_class):
2583
"""Make sure a local directory exists and is empty.
2585
If it does not exist, it is created. If it exists and is not empty, an
2586
instance of exception_class is raised.
2591
if e.errno != errno.EEXIST:
2593
if os.listdir(path) != []:
2594
raise exception_class(path)
2597
def is_environment_error(evalue):
2598
"""True if exception instance is due to a process environment issue
2600
This includes OSError and IOError, but also other errors that come from
2601
the operating system or core libraries but are not subclasses of those.
2603
if isinstance(evalue, (EnvironmentError, select.error)):
2605
if sys.platform == "win32" and win32utils._is_pywintypes_error(evalue):
added
removed
bzrlib/osutils.py
