14
14
# along with this program; if not, write to the Free Software
15
15
# Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
17
from __future__ import absolute_import
20
from stat import (S_ISREG, S_ISDIR, S_ISLNK, ST_MODE, ST_SIZE,
21
S_ISCHR, S_ISBLK, S_ISFIFO, S_ISSOCK)
26
27
from bzrlib.lazy_import import lazy_import
27
28
lazy_import(globals(), """
29
29
from datetime import datetime
31
from ntpath import (abspath as _nt_abspath,
33
normpath as _nt_normpath,
34
realpath as _nt_realpath,
35
splitdrive as _nt_splitdrive,
34
# We need to import both shutil and rmtree as we export the later on posix
35
# and need the former on windows
37
from shutil import rmtree
40
# We need to import both tempfile and mkdtemp as we export the later on posix
41
# and need the former on windows
45
from tempfile import (
43
from tempfile import mkdtemp
50
46
from bzrlib import (
53
from bzrlib.i18n import gettext
57
# sha and md5 modules are deprecated in python2.6 but hashlib is available as
59
if sys.version_info < (2, 5):
60
import md5 as _mod_md5
62
import sha as _mod_sha
56
from bzrlib.symbol_versioning import (
72
from bzrlib import symbol_versioning
68
from bzrlib import symbol_versioning, _fs_enc
75
71
# Cross platform wall-clock time functionality with decent resolution.
103
102
mod = os.lstat(filename).st_mode
104
103
if not stat.S_ISLNK(mod):
105
104
mod = mod & 0777555
106
os.chmod(filename, mod)
105
chmod_if_possible(filename, mod)
109
108
def make_writable(filename):
110
109
mod = os.lstat(filename).st_mode
111
110
if not stat.S_ISLNK(mod):
113
os.chmod(filename, mod)
112
chmod_if_possible(filename, mod)
115
def chmod_if_possible(filename, mode):
116
# Set file mode if that can be safely done.
117
# Sometimes even on unix the filesystem won't allow it - see
118
# https://bugs.launchpad.net/bzr/+bug/606537
120
# It is probably faster to just do the chmod, rather than
121
# doing a stat, and then trying to compare
122
os.chmod(filename, mode)
123
except (IOError, OSError),e:
124
# Permission/access denied seems to commonly happen on smbfs; there's
125
# probably no point warning about it.
126
# <https://bugs.launchpad.net/bzr/+bug/606537>
127
if getattr(e, 'errno') in (errno.EPERM, errno.EACCES):
128
trace.mutter("ignore error on chmod of %r: %r" % (
116
134
def minimum_path_selection(paths):
268
286
rename_func(tmp_name, new)
269
287
if failure_exc is not None:
270
raise failure_exc[0], failure_exc[1], failure_exc[2]
289
raise failure_exc[0], failure_exc[1], failure_exc[2]
273
294
# In Python 2.4.2 and older, os.path.abspath and os.path.realpath
274
295
# choke on a Unicode string containing a relative path if
275
296
# os.getcwd() returns a non-sys.getdefaultencoding()-encoded
277
_fs_enc = sys.getfilesystemencoding() or 'utf-8'
278
298
def _posix_abspath(path):
279
299
# jam 20060426 rather than encoding to fsencoding
280
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# copy posixpath.abspath, but use os.getcwdu instead
281
301
if not posixpath.isabs(path):
282
302
path = posixpath.join(getcwd(), path)
283
return posixpath.normpath(path)
303
return _posix_normpath(path)
286
306
def _posix_realpath(path):
287
307
return posixpath.realpath(path.encode(_fs_enc)).decode(_fs_enc)
310
def _posix_normpath(path):
311
path = posixpath.normpath(path)
312
# Bug 861008: posixpath.normpath() returns a path normalized according to
313
# the POSIX standard, which stipulates (for compatibility reasons) that two
314
# leading slashes must not be simplified to one, and only if there are 3 or
315
# more should they be simplified as one. So we treat the leading 2 slashes
316
# as a special case here by simply removing the first slash, as we consider
317
# that breaking POSIX compatibility for this obscure feature is acceptable.
318
# This is not a paranoid precaution, as we notably get paths like this when
319
# the repo is hosted at the root of the filesystem, i.e. in "/".
320
if path.startswith('//'):
325
def _posix_path_from_environ(key):
326
"""Get unicode path from `key` in environment or None if not present
328
Note that posix systems use arbitrary byte strings for filesystem objects,
329
so a path that raises BadFilenameEncoding here may still be accessible.
331
val = os.environ.get(key, None)
335
return val.decode(_fs_enc)
336
except UnicodeDecodeError:
337
# GZ 2011-12-12:Ideally want to include `key` in the exception message
338
raise errors.BadFilenameEncoding(val, _fs_enc)
341
def _posix_getuser_unicode():
342
"""Get username from environment or password database as unicode"""
343
name = getpass.getuser()
344
user_encoding = get_user_encoding()
346
return name.decode(user_encoding)
347
except UnicodeDecodeError:
348
raise errors.BzrError("Encoding of username %r is unsupported by %s "
349
"application locale." % (name, user_encoding))
290
352
def _win32_fixdrive(path):
291
353
"""Force drive letters to be consistent.
319
381
# /path => C:/path
320
382
path = unicode(path)
321
383
# check for absolute path
322
drive = _nt_splitdrive(path)[0]
384
drive = ntpath.splitdrive(path)[0]
323
385
if drive == '' and path[:2] not in('//','\\\\'):
324
386
cwd = os.getcwdu()
325
387
# we cannot simply os.path.join cwd and path
326
388
# because os.path.join('C:','/path') produce '/path'
327
389
# and this is incorrect
328
390
if path[:1] in ('/','\\'):
329
cwd = _nt_splitdrive(cwd)[0]
391
cwd = ntpath.splitdrive(cwd)[0]
331
393
path = cwd + '\\' + path
332
return _win32_fixdrive(_nt_normpath(path).replace('\\', '/'))
394
return _win32_fixdrive(ntpath.normpath(path).replace('\\', '/'))
335
397
def _win32_realpath(path):
336
# Real _nt_realpath doesn't have a problem with a unicode cwd
337
return _win32_fixdrive(_nt_realpath(unicode(path)).replace('\\', '/'))
398
# Real ntpath.realpath doesn't have a problem with a unicode cwd
399
return _win32_fixdrive(ntpath.realpath(unicode(path)).replace('\\', '/'))
340
402
def _win32_pathjoin(*args):
341
return _nt_join(*args).replace('\\', '/')
403
return ntpath.join(*args).replace('\\', '/')
344
406
def _win32_normpath(path):
345
return _win32_fixdrive(_nt_normpath(unicode(path)).replace('\\', '/'))
407
return _win32_fixdrive(ntpath.normpath(unicode(path)).replace('\\', '/'))
348
410
def _win32_getcwd():
452
534
input_encoding = getattr(sys.stdin, 'encoding', None)
453
535
if not input_encoding:
454
536
output_encoding = get_user_encoding()
455
mutter('encoding stdout as osutils.get_user_encoding() %r',
538
mutter('encoding stdout as osutils.get_user_encoding() %r',
458
541
output_encoding = input_encoding
459
mutter('encoding stdout as sys.stdin encoding %r', output_encoding)
543
mutter('encoding stdout as sys.stdin encoding %r',
461
mutter('encoding stdout as sys.stdout encoding %r', output_encoding)
547
mutter('encoding stdout as sys.stdout encoding %r', output_encoding)
462
548
if output_encoding == 'cp0':
463
549
# invalid encoding (cp0 means 'no codepage' on Windows)
464
550
output_encoding = get_user_encoding()
465
mutter('cp0 is invalid encoding.'
552
mutter('cp0 is invalid encoding.'
466
553
' encoding stdout as osutils.get_user_encoding() %r',
1222
1310
# but for now, we haven't optimized...
1223
1311
return [canonical_relpath(base, p) for p in paths]
1314
def decode_filename(filename):
1315
"""Decode the filename using the filesystem encoding
1317
If it is unicode, it is returned.
1318
Otherwise it is decoded from the the filesystem's encoding. If decoding
1319
fails, a errors.BadFilenameEncoding exception is raised.
1321
if type(filename) is unicode:
1324
return filename.decode(_fs_enc)
1325
except UnicodeDecodeError:
1326
raise errors.BadFilenameEncoding(filename, _fs_enc)
1225
1329
def safe_unicode(unicode_or_utf8_string):
1226
1330
"""Coerce unicode_or_utf8_string into unicode.
1346
1450
normalized_filename = _inaccessible_normalized_filename
1453
def set_signal_handler(signum, handler, restart_syscall=True):
1454
"""A wrapper for signal.signal that also calls siginterrupt(signum, False)
1455
on platforms that support that.
1457
:param restart_syscall: if set, allow syscalls interrupted by a signal to
1458
automatically restart (by calling `signal.siginterrupt(signum,
1459
False)`). May be ignored if the feature is not available on this
1460
platform or Python version.
1464
siginterrupt = signal.siginterrupt
1466
# This python implementation doesn't provide signal support, hence no
1469
except AttributeError:
1470
# siginterrupt doesn't exist on this platform, or for this version
1472
siginterrupt = lambda signum, flag: None
1474
def sig_handler(*args):
1475
# Python resets the siginterrupt flag when a signal is
1476
# received. <http://bugs.python.org/issue8354>
1477
# As a workaround for some cases, set it back the way we want it.
1478
siginterrupt(signum, False)
1479
# Now run the handler function passed to set_signal_handler.
1482
sig_handler = handler
1483
old_handler = signal.signal(signum, sig_handler)
1485
siginterrupt(signum, False)
1349
1489
default_terminal_width = 80
1350
1490
"""The default terminal width for ttys.
1363
1509
- if BZR_COLUMNS is set, returns its value
1364
1510
- if there is no controlling terminal, returns None
1511
- query the OS, if the queried size has changed since the last query,
1365
1513
- if COLUMNS is set, returns its value,
1514
- if the OS has a value (even though it's never changed), return its value.
1367
1516
From there, we need to query the OS to get the size of the controlling
1519
On Unices we query the OS by:
1371
1520
- get termios.TIOCGWINSZ
1372
1521
- if an error occurs or a negative value is obtained, returns None
1523
On Windows we query the OS by:
1376
1524
- win32utils.get_console_size() decides,
1377
1525
- returns None on error (provided default value)
1527
# Note to implementors: if changing the rules for determining the width,
1528
# make sure you've considered the behaviour in these cases:
1529
# - M-x shell in emacs, where $COLUMNS is set and TIOCGWINSZ returns 0,0.
1530
# - bzr log | less, in bash, where $COLUMNS not set and TIOCGWINSZ returns
1532
# - (add more interesting cases here, if you find any)
1533
# Some programs implement "Use $COLUMNS (if set) until SIGWINCH occurs",
1534
# but we don't want to register a signal handler because it is impossible
1535
# to do so without risking EINTR errors in Python <= 2.6.5 (see
1536
# <http://bugs.python.org/issue8354>). Instead we check TIOCGWINSZ every
1537
# time so we can notice if the reported size has changed, which should have
1380
1540
# If BZR_COLUMNS is set, take it, user is always right
1541
# Except if they specified 0 in which case, impose no limit here
1382
return int(os.environ['BZR_COLUMNS'])
1543
width = int(os.environ['BZR_COLUMNS'])
1383
1544
except (KeyError, ValueError):
1546
if width is not None:
1386
1552
isatty = getattr(sys.stdout, 'isatty', None)
1387
if isatty is None or not isatty():
1553
if isatty is None or not isatty():
1388
1554
# Don't guess, setting BZR_COLUMNS is the recommended way to override.
1391
# If COLUMNS is set, take it, the terminal knows better (even inside a
1392
# given terminal, the application can decide to set COLUMNS to a lower
1393
# value (splitted screen) or a bigger value (scroll bars))
1558
width, height = os_size = _terminal_size(None, None)
1559
global _first_terminal_size, _terminal_size_state
1560
if _terminal_size_state == 'no_data':
1561
_first_terminal_size = os_size
1562
_terminal_size_state = 'unchanged'
1563
elif (_terminal_size_state == 'unchanged' and
1564
_first_terminal_size != os_size):
1565
_terminal_size_state = 'changed'
1567
# If the OS claims to know how wide the terminal is, and this value has
1568
# ever changed, use that.
1569
if _terminal_size_state == 'changed':
1570
if width is not None and width > 0:
1573
# If COLUMNS is set, use it.
1395
1575
return int(os.environ['COLUMNS'])
1396
1576
except (KeyError, ValueError):
1399
width, height = _terminal_size(None, None)
1401
# Consider invalid values as meaning no width
1579
# Finally, use an unchanged size from the OS, if we have one.
1580
if _terminal_size_state == 'unchanged':
1581
if width is not None and width > 0:
1584
# The width could not be determined.
1407
1588
def _win32_terminal_size(width, height):
1771
1936
real_handlers[kind](abspath, relpath)
1939
def copy_ownership_from_path(dst, src=None):
1940
"""Copy usr/grp ownership from src file/dir to dst file/dir.
1942
If src is None, the containing directory is used as source. If chown
1943
fails, the error is ignored and a warning is printed.
1945
chown = getattr(os, 'chown', None)
1950
src = os.path.dirname(dst)
1956
chown(dst, s.st_uid, s.st_gid)
1959
'Unable to copy ownership from "%s" to "%s". '
1960
'You may want to set it manually.', src, dst)
1961
trace.log_exception_quietly()
1774
1964
def path_prefix_key(path):
1775
1965
"""Generate a prefix-order path key for path.
1862
2052
return user_encoding
2055
def get_diff_header_encoding():
2056
return get_terminal_encoding()
2059
_message_encoding = None
2062
def get_message_encoding():
2063
"""Return the encoding used for messages
2065
While the message encoding is a general setting it should usually only be
2066
needed for decoding system error strings such as from OSError instances.
2068
global _message_encoding
2069
if _message_encoding is None:
2070
if os.name == "posix":
2072
# This is a process-global setting that can change, but should in
2073
# general just get set once at process startup then be constant.
2074
_message_encoding = locale.getlocale(locale.LC_MESSAGES)[1]
2076
# On windows want the result of GetACP() which this boils down to.
2077
_message_encoding = get_user_encoding()
2078
return _message_encoding or "ascii"
1865
2081
def get_host_name():
1866
2082
"""Return the current unicode host name.
1876
2092
return socket.gethostname().decode(get_user_encoding())
1879
def recv_all(socket, bytes):
2095
# We must not read/write any more than 64k at a time from/to a socket so we
2096
# don't risk "no buffer space available" errors on some platforms. Windows in
2097
# particular is likely to throw WSAECONNABORTED or WSAENOBUFS if given too much
2099
MAX_SOCKET_CHUNK = 64 * 1024
2101
_end_of_stream_errors = [errno.ECONNRESET]
2102
for _eno in ['WSAECONNRESET', 'WSAECONNABORTED']:
2103
_eno = getattr(errno, _eno, None)
2104
if _eno is not None:
2105
_end_of_stream_errors.append(_eno)
2109
def read_bytes_from_socket(sock, report_activity=None,
2110
max_read_size=MAX_SOCKET_CHUNK):
2111
"""Read up to max_read_size of bytes from sock and notify of progress.
2113
Translates "Connection reset by peer" into file-like EOF (return an
2114
empty string rather than raise an error), and repeats the recv if
2115
interrupted by a signal.
2119
bytes = sock.recv(max_read_size)
2120
except socket.error, e:
2122
if eno in _end_of_stream_errors:
2123
# The connection was closed by the other side. Callers expect
2124
# an empty string to signal end-of-stream.
2126
elif eno == errno.EINTR:
2127
# Retry the interrupted recv.
2131
if report_activity is not None:
2132
report_activity(len(bytes), 'read')
2136
def recv_all(socket, count):
1880
2137
"""Receive an exact number of bytes.
1882
2139
Regular Socket.recv() may return less than the requested number of bytes,
1883
dependning on what's in the OS buffer. MSG_WAITALL is not available
2140
depending on what's in the OS buffer. MSG_WAITALL is not available
1884
2141
on all platforms, but this should work everywhere. This will return
1885
2142
less than the requested amount if the remote end closes.
1887
2144
This isn't optimized and is intended mostly for use in testing.
1890
while len(b) < bytes:
1891
new = until_no_eintr(socket.recv, bytes - len(b))
2147
while len(b) < count:
2148
new = read_bytes_from_socket(socket, None, count - len(b))
1898
def send_all(socket, bytes, report_activity=None):
2155
def send_all(sock, bytes, report_activity=None):
1899
2156
"""Send all bytes on a socket.
1901
Regular socket.sendall() can give socket error 10053 on Windows. This
1902
implementation sends no more than 64k at a time, which avoids this problem.
2158
Breaks large blocks in smaller chunks to avoid buffering limitations on
2159
some platforms, and catches EINTR which may be thrown if the send is
2160
interrupted by a signal.
2162
This is preferred to socket.sendall(), because it avoids portability bugs
2163
and provides activity reporting.
1904
2165
:param report_activity: Call this as bytes are read, see
1905
2166
Transport._report_activity
1908
for pos in xrange(0, len(bytes), chunk_size):
1909
block = bytes[pos:pos+chunk_size]
1910
if report_activity is not None:
1911
report_activity(len(block), 'write')
1912
until_no_eintr(socket.sendall, block)
2169
byte_count = len(bytes)
2170
while sent_total < byte_count:
2172
sent = sock.send(buffer(bytes, sent_total, MAX_SOCKET_CHUNK))
2173
except socket.error, e:
2174
if e.args[0] != errno.EINTR:
2178
report_activity(sent, 'write')
2181
def connect_socket(address):
2182
# Slight variation of the socket.create_connection() function (provided by
2183
# python-2.6) that can fail if getaddrinfo returns an empty list. We also
2184
# provide it for previous python versions. Also, we don't use the timeout
2185
# parameter (provided by the python implementation) so we don't implement
2187
err = socket.error('getaddrinfo returns an empty list')
2188
host, port = address
2189
for res in socket.getaddrinfo(host, port, 0, socket.SOCK_STREAM):
2190
af, socktype, proto, canonname, sa = res
2193
sock = socket.socket(af, socktype, proto)
2197
except socket.error, err:
2198
# 'err' is now the most recent error
2199
if sock is not None:
1915
2204
def dereference_path(path):
1975
2266
return file_kind_from_stat_mode(mode)
1976
2267
file_kind_from_stat_mode = file_kind_from_stat_mode_thunk
1979
def file_kind(f, _lstat=os.lstat):
2269
def file_stat(f, _lstat=os.lstat):
1981
return file_kind_from_stat_mode(_lstat(f).st_mode)
1982
2273
except OSError, e:
1983
2274
if getattr(e, 'errno', None) in (errno.ENOENT, errno.ENOTDIR):
1984
2275
raise errors.NoSuchFile(f)
2278
def file_kind(f, _lstat=os.lstat):
2279
stat_value = file_stat(f, _lstat)
2280
return file_kind_from_stat_mode(stat_value.st_mode)
1988
2282
def until_no_eintr(f, *a, **kw):
1989
"""Run f(*a, **kw), retrying if an EINTR error occurs."""
2283
"""Run f(*a, **kw), retrying if an EINTR error occurs.
2285
WARNING: you must be certain that it is safe to retry the call repeatedly
2286
if EINTR does occur. This is typically only true for low-level operations
2287
like os.read. If in any doubt, don't use this.
2289
Keep in mind that this is not a complete solution to EINTR. There is
2290
probably code in the Python standard library and other dependencies that
2291
may encounter EINTR if a signal arrives (and there is signal handler for
2292
that signal). So this function can reduce the impact for IO that bzrlib
2293
directly controls, but it is not a complete solution.
1990
2295
# Borrowed from Twisted's twisted.python.util.untilConcludes function.
2036
2343
termios.tcsetattr(fd, termios.TCSADRAIN, settings)
2040
if sys.platform == 'linux2':
2346
if sys.platform.startswith('linux'):
2041
2347
def _local_concurrency():
2043
prefix = 'processor'
2044
for line in file('/proc/cpuinfo', 'rb'):
2045
if line.startswith(prefix):
2046
concurrency = int(line[line.find(':')+1:]) + 1
2349
return os.sysconf('SC_NPROCESSORS_ONLN')
2350
except (ValueError, OSError, AttributeError):
2048
2352
elif sys.platform == 'darwin':
2049
2353
def _local_concurrency():
2050
2354
return subprocess.Popen(['sysctl', '-n', 'hw.availcpu'],
2051
2355
stdout=subprocess.PIPE).communicate()[0]
2052
elif sys.platform[0:7] == 'freebsd':
2356
elif "bsd" in sys.platform:
2053
2357
def _local_concurrency():
2054
2358
return subprocess.Popen(['sysctl', '-n', 'hw.ncpu'],
2055
2359
stdout=subprocess.PIPE).communicate()[0]
2109
2420
data, _ = self.encode(object, self.errors)
2110
2421
self.stream.write(data)
2423
if sys.platform == 'win32':
2424
def open_file(filename, mode='r', bufsize=-1):
2425
"""This function is used to override the ``open`` builtin.
2427
But it uses O_NOINHERIT flag so the file handle is not inherited by
2428
child processes. Deleting or renaming a closed file opened with this
2429
function is not blocking child processes.
2431
writing = 'w' in mode
2432
appending = 'a' in mode
2433
updating = '+' in mode
2434
binary = 'b' in mode
2437
# see http://msdn.microsoft.com/en-us/library/yeby3zcb%28VS.71%29.aspx
2438
# for flags for each modes.
2448
flags |= os.O_WRONLY
2449
flags |= os.O_CREAT | os.O_TRUNC
2454
flags |= os.O_WRONLY
2455
flags |= os.O_CREAT | os.O_APPEND
2460
flags |= os.O_RDONLY
2462
return os.fdopen(os.open(filename, flags), mode, bufsize)
2467
def available_backup_name(base, exists):
2468
"""Find a non-existing backup file name.
2470
This will *not* create anything, this only return a 'free' entry. This
2471
should be used for checking names in a directory below a locked
2472
tree/branch/repo to avoid race conditions. This is LBYL (Look Before You
2473
Leap) and generally discouraged.
2475
:param base: The base name.
2477
:param exists: A callable returning True if the path parameter exists.
2480
name = "%s.~%d~" % (base, counter)
2483
name = "%s.~%d~" % (base, counter)
2487
def set_fd_cloexec(fd):
2488
"""Set a Unix file descriptor's FD_CLOEXEC flag. Do nothing if platform
2489
support for this is not available.
2493
old = fcntl.fcntl(fd, fcntl.F_GETFD)
2494
fcntl.fcntl(fd, fcntl.F_SETFD, old | fcntl.FD_CLOEXEC)
2495
except (ImportError, AttributeError):
2496
# Either the fcntl module or specific constants are not present
2500
def find_executable_on_path(name):
2501
"""Finds an executable on the PATH.
2503
On Windows, this will try to append each extension in the PATHEXT
2504
environment variable to the name, if it cannot be found with the name
2507
:param name: The base name of the executable.
2508
:return: The path to the executable found or None.
2510
path = os.environ.get('PATH')
2513
path = path.split(os.pathsep)
2514
if sys.platform == 'win32':
2515
exts = os.environ.get('PATHEXT', '').split(os.pathsep)
2516
exts = [ext.lower() for ext in exts]
2517
base, ext = os.path.splitext(name)
2519
if ext.lower() not in exts:
2527
f = os.path.join(d, name) + ext
2528
if os.access(f, os.X_OK):
2533
def _posix_is_local_pid_dead(pid):
2534
"""True if pid doesn't correspond to live process on this machine"""
2536
# Special meaning of unix kill: just check if it's there.
2539
if e.errno == errno.ESRCH:
2540
# On this machine, and really not found: as sure as we can be
2543
elif e.errno == errno.EPERM:
2544
# exists, though not ours
2547
mutter("os.kill(%d, 0) failed: %s" % (pid, e))
2548
# Don't really know.
2551
# Exists and our process: not dead.
2554
if sys.platform == "win32":
2555
is_local_pid_dead = win32utils.is_local_pid_dead
2557
is_local_pid_dead = _posix_is_local_pid_dead
2560
def fdatasync(fileno):
2561
"""Flush file contents to disk if possible.
2563
:param fileno: Integer OS file handle.
2564
:raises TransportNotPossible: If flushing to disk is not possible.
2566
fn = getattr(os, 'fdatasync', getattr(os, 'fsync', None))
2571
def ensure_empty_directory_exists(path, exception_class):
2572
"""Make sure a local directory exists and is empty.
2574
If it does not exist, it is created. If it exists and is not empty, an
2575
instance of exception_class is raised.
2580
if e.errno != errno.EEXIST:
2582
if os.listdir(path) != []:
2583
raise exception_class(path)
2586
def is_environment_error(evalue):
2587
"""True if exception instance is due to a process environment issue
2589
This includes OSError and IOError, but also other errors that come from
2590
the operating system or core libraries but are not subclasses of those.
2592
if isinstance(evalue, (EnvironmentError, select.error)):
2594
if sys.platform == "win32" and win32utils._is_pywintypes_error(evalue):
added
removed
bzrlib/osutils.py
