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)
27
27
from bzrlib.lazy_import import lazy_import
28
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,
35
# We need to import both shutil and rmtree as we export the later on posix
36
# and need the former on windows
38
from shutil import rmtree
41
# We need to import both tempfile and mkdtemp as we export the later on posix
42
# and need the former on windows
44
from tempfile import mkdtemp
45
from tempfile import (
47
50
from bzrlib import (
54
from bzrlib.i18n import gettext
57
from bzrlib.symbol_versioning import (
62
warn as warn_deprecated,
59
# sha and md5 modules are deprecated in python2.6 but hashlib is available as
61
if sys.version_info < (2, 5):
62
import md5 as _mod_md5
64
import sha as _mod_sha
72
from bzrlib import symbol_versioning, _fs_enc
74
from bzrlib import symbol_versioning
75
77
# Cross platform wall-clock time functionality with decent resolution.
106
108
mod = os.lstat(filename).st_mode
107
109
if not stat.S_ISLNK(mod):
108
110
mod = mod & 0777555
109
chmod_if_possible(filename, mod)
111
os.chmod(filename, mod)
112
114
def make_writable(filename):
113
115
mod = os.lstat(filename).st_mode
114
116
if not stat.S_ISLNK(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
os.chmod(filename, mod)
138
121
def minimum_path_selection(paths):
290
273
rename_func(tmp_name, new)
291
274
if failure_exc is not None:
293
raise failure_exc[0], failure_exc[1], failure_exc[2]
275
raise failure_exc[0], failure_exc[1], failure_exc[2]
298
278
# In Python 2.4.2 and older, os.path.abspath and os.path.realpath
299
279
# choke on a Unicode string containing a relative path if
300
280
# os.getcwd() returns a non-sys.getdefaultencoding()-encoded
282
_fs_enc = sys.getfilesystemencoding() or 'utf-8'
302
283
def _posix_abspath(path):
303
284
# jam 20060426 rather than encoding to fsencoding
304
285
# copy posixpath.abspath, but use os.getcwdu instead
305
286
if not posixpath.isabs(path):
306
287
path = posixpath.join(getcwd(), path)
307
return _posix_normpath(path)
288
return posixpath.normpath(path)
310
291
def _posix_realpath(path):
311
292
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))
365
295
def _win32_fixdrive(path):
366
296
"""Force drive letters to be consistent.
394
324
# /path => C:/path
395
325
path = unicode(path)
396
326
# check for absolute path
397
drive = ntpath.splitdrive(path)[0]
327
drive = _nt_splitdrive(path)[0]
398
328
if drive == '' and path[:2] not in('//','\\\\'):
399
329
cwd = os.getcwdu()
400
330
# we cannot simply os.path.join cwd and path
401
331
# because os.path.join('C:','/path') produce '/path'
402
332
# and this is incorrect
403
333
if path[:1] in ('/','\\'):
404
cwd = ntpath.splitdrive(cwd)[0]
334
cwd = _nt_splitdrive(cwd)[0]
406
336
path = cwd + '\\' + path
407
return _win32_fixdrive(ntpath.normpath(path).replace('\\', '/'))
337
return _win32_fixdrive(_nt_normpath(path).replace('\\', '/'))
410
340
def _win32_realpath(path):
411
# Real ntpath.realpath doesn't have a problem with a unicode cwd
412
return _win32_fixdrive(ntpath.realpath(unicode(path)).replace('\\', '/'))
341
# Real _nt_realpath doesn't have a problem with a unicode cwd
342
return _win32_fixdrive(_nt_realpath(unicode(path)).replace('\\', '/'))
415
345
def _win32_pathjoin(*args):
416
return ntpath.join(*args).replace('\\', '/')
346
return _nt_join(*args).replace('\\', '/')
419
349
def _win32_normpath(path):
420
return _win32_fixdrive(ntpath.normpath(unicode(path)).replace('\\', '/'))
350
return _win32_fixdrive(_nt_normpath(unicode(path)).replace('\\', '/'))
423
353
def _win32_getcwd():
450
380
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)
476
383
# Default is to just use the python builtins, but these can be rebound on
477
384
# particular platforms.
478
385
abspath = _posix_abspath
479
386
realpath = _posix_realpath
480
387
pathjoin = os.path.join
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
388
normpath = os.path.normpath
485
389
getcwd = os.getcwdu
486
391
dirname = os.path.dirname
487
392
basename = os.path.basename
488
393
split = os.path.split
489
394
splitext = os.path.splitext
490
# These were already lazily imported into local scope
395
# These were already imported into local scope
491
396
# mkdtemp = tempfile.mkdtemp
492
397
# rmtree = shutil.rmtree
500
399
MIN_ABS_PATHLENGTH = 1
571
457
input_encoding = getattr(sys.stdin, 'encoding', None)
572
458
if not input_encoding:
573
459
output_encoding = get_user_encoding()
575
mutter('encoding stdout as osutils.get_user_encoding() %r',
460
mutter('encoding stdout as osutils.get_user_encoding() %r',
578
463
output_encoding = input_encoding
580
mutter('encoding stdout as sys.stdin encoding %r',
464
mutter('encoding stdout as sys.stdin encoding %r', output_encoding)
584
mutter('encoding stdout as sys.stdout encoding %r', output_encoding)
466
mutter('encoding stdout as sys.stdout encoding %r', output_encoding)
585
467
if output_encoding == 'cp0':
586
468
# invalid encoding (cp0 means 'no codepage' on Windows)
587
469
output_encoding = get_user_encoding()
589
mutter('cp0 is invalid encoding.'
470
mutter('cp0 is invalid encoding.'
590
471
' encoding stdout as osutils.get_user_encoding() %r',
981
862
"""Return size of given open file."""
982
return os.fstat(f.fileno())[stat.ST_SIZE]
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":
863
return os.fstat(f.fileno())[ST_SIZE]
866
# Define rand_bytes based on platform.
868
# Python 2.4 and later have os.urandom,
869
# but it doesn't work on some arches
871
rand_bytes = os.urandom
872
except (NotImplementedError, AttributeError):
873
# If python doesn't have os.urandom, or it doesn't work,
874
# then try to first pull random data from /dev/urandom
994
except NotImplementedError:
876
rand_bytes = file('/dev/urandom', 'rb').read
877
# Otherwise, use this hack as a last resort
878
except (IOError, OSError):
995
879
# not well seeded, but better than nothing
996
880
def rand_bytes(n):
1493
1360
False)`). May be ignored if the feature is not available on this
1494
1361
platform or Python version.
1498
siginterrupt = signal.siginterrupt
1500
# This python implementation doesn't provide signal support, hence no
1503
except AttributeError:
1504
# siginterrupt doesn't exist on this platform, or for this version
1506
siginterrupt = lambda signum, flag: None
1363
old_handler = signal.signal(signum, handler)
1507
1364
if restart_syscall:
1508
def sig_handler(*args):
1509
# Python resets the siginterrupt flag when a signal is
1510
# received. <http://bugs.python.org/issue8354>
1511
# As a workaround for some cases, set it back the way we want it.
1366
siginterrupt = signal.siginterrupt
1367
except AttributeError: # siginterrupt doesn't exist on this platform, or for this version of
1512
1371
siginterrupt(signum, False)
1513
# Now run the handler function passed to set_signal_handler.
1516
sig_handler = handler
1517
old_handler = signal.signal(signum, sig_handler)
1519
siginterrupt(signum, False)
1520
1372
return old_handler
1543
1389
- if BZR_COLUMNS is set, returns its value
1544
1390
- if there is no controlling terminal, returns None
1545
- query the OS, if the queried size has changed since the last query,
1547
1391
- if COLUMNS is set, returns its value,
1548
- if the OS has a value (even though it's never changed), return its value.
1550
1393
From there, we need to query the OS to get the size of the controlling
1553
On Unices we query the OS by:
1554
1397
- get termios.TIOCGWINSZ
1555
1398
- if an error occurs or a negative value is obtained, returns None
1557
On Windows we query the OS by:
1558
1402
- win32utils.get_console_size() decides,
1559
1403
- returns None on error (provided default value)
1561
# Note to implementors: if changing the rules for determining the width,
1562
# make sure you've considered the behaviour in these cases:
1563
# - M-x shell in emacs, where $COLUMNS is set and TIOCGWINSZ returns 0,0.
1564
# - bzr log | less, in bash, where $COLUMNS not set and TIOCGWINSZ returns
1566
# - (add more interesting cases here, if you find any)
1567
# Some programs implement "Use $COLUMNS (if set) until SIGWINCH occurs",
1568
# but we don't want to register a signal handler because it is impossible
1569
# to do so without risking EINTR errors in Python <= 2.6.5 (see
1570
# <http://bugs.python.org/issue8354>). Instead we check TIOCGWINSZ every
1571
# time so we can notice if the reported size has changed, which should have
1574
1406
# If BZR_COLUMNS is set, take it, user is always right
1575
# Except if they specified 0 in which case, impose no limit here
1577
width = int(os.environ['BZR_COLUMNS'])
1408
return int(os.environ['BZR_COLUMNS'])
1578
1409
except (KeyError, ValueError):
1580
if width is not None:
1586
1412
isatty = getattr(sys.stdout, 'isatty', None)
1587
if isatty is None or not isatty():
1413
if isatty is None or not isatty():
1588
1414
# Don't guess, setting BZR_COLUMNS is the recommended way to override.
1592
width, height = os_size = _terminal_size(None, None)
1593
global _first_terminal_size, _terminal_size_state
1594
if _terminal_size_state == 'no_data':
1595
_first_terminal_size = os_size
1596
_terminal_size_state = 'unchanged'
1597
elif (_terminal_size_state == 'unchanged' and
1598
_first_terminal_size != os_size):
1599
_terminal_size_state = 'changed'
1601
# If the OS claims to know how wide the terminal is, and this value has
1602
# ever changed, use that.
1603
if _terminal_size_state == 'changed':
1604
if width is not None and width > 0:
1607
# If COLUMNS is set, use it.
1417
# If COLUMNS is set, take it, the terminal knows better (even inside a
1418
# given terminal, the application can decide to set COLUMNS to a lower
1419
# value (splitted screen) or a bigger value (scroll bars))
1609
1421
return int(os.environ['COLUMNS'])
1610
1422
except (KeyError, ValueError):
1613
# Finally, use an unchanged size from the OS, if we have one.
1614
if _terminal_size_state == 'unchanged':
1615
if width is not None and width > 0:
1425
width, height = _terminal_size(None, None)
1427
# Consider invalid values as meaning no width
1618
# The width could not be determined.
1622
1433
def _win32_terminal_size(width, height):
1649
1460
_terminal_size = _ioctl_terminal_size
1463
def _terminal_size_changed(signum, frame):
1464
"""Set COLUMNS upon receiving a SIGnal for WINdow size CHange."""
1465
width, height = _terminal_size(None, None)
1466
if width is not None:
1467
os.environ['COLUMNS'] = str(width)
1470
_registered_sigwinch = False
1472
def watch_sigwinch():
1473
"""Register for SIGWINCH, once and only once."""
1474
global _registered_sigwinch
1475
if not _registered_sigwinch:
1476
if sys.platform == 'win32':
1477
# Martin (gz) mentioned WINDOW_BUFFER_SIZE_RECORD from
1478
# ReadConsoleInput but I've no idea how to plug that in
1479
# the current design -- vila 20091216
1482
set_signal_handler(signal.SIGWINCH, _terminal_size_changed)
1483
_registered_sigwinch = True
1652
1486
def supports_executable():
1653
1487
return sys.platform != "win32"
1989
1824
s = os.stat(src)
1990
chown(dst, s.st_uid, s.st_gid)
1825
os.chown(dst, s.st_uid, s.st_gid)
1991
1826
except OSError, e:
1993
'Unable to copy ownership from "%s" to "%s". '
1994
'You may want to set it manually.', src, dst)
1995
trace.log_exception_quietly()
1827
trace.warning("Unable to copy ownership from '%s' to '%s': IOError: %s." % (src, dst, e))
1830
def mkdir_with_ownership(path, ownership_src=None):
1831
"""Create the directory 'path' with specified ownership.
1833
If ownership_src is given, copies (chown) usr/grp ownership
1834
from 'ownership_src' to 'path'. If ownership_src is None, use the
1835
containing dir ownership.
1838
copy_ownership(path, ownership_src)
1841
def open_with_ownership(filename, mode='r', bufsize=-1, ownership_src=None):
1842
"""Open the file 'filename' with the specified ownership.
1844
If ownership_src is specified, copy usr/grp ownership from ownership_src
1845
to filename. If ownership_src is None, copy ownership from containing
1847
Returns the opened file object.
1849
f = open(filename, mode, bufsize)
1850
copy_ownership(filename, ownership_src)
1998
1854
def path_prefix_key(path):
2013
1869
_cached_user_encoding = None
2016
def get_user_encoding(use_cache=DEPRECATED_PARAMETER):
1872
def get_user_encoding(use_cache=True):
2017
1873
"""Find out what the preferred user encoding is.
2019
1875
This is generally the encoding that is used for command line parameters
2020
1876
and file contents. This may be different from the terminal encoding
2021
1877
or the filesystem encoding.
1879
:param use_cache: Enable cache for detected encoding.
1880
(This parameter is turned on by default,
1881
and required only for selftesting)
2023
1883
:return: A string defining the preferred user encoding
2025
1885
global _cached_user_encoding
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:
1886
if _cached_user_encoding is not None and use_cache:
2030
1887
return _cached_user_encoding
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)
1889
if sys.platform == 'darwin':
1890
# python locale.getpreferredencoding() always return
1891
# 'mac-roman' on darwin. That's a lie.
1892
sys.platform = 'posix'
1894
if os.environ.get('LANG', None) is None:
1895
# If LANG is not set, we end up with 'ascii', which is bad
1896
# ('mac-roman' is more than ascii), so we set a default which
1897
# will give us UTF-8 (which appears to work in all cases on
1898
# OSX). Users are still free to override LANG of course, as
1899
# long as it give us something meaningful. This work-around
1900
# *may* not be needed with python 3k and/or OSX 10.5, but will
1901
# work with them too -- vila 20080908
1902
os.environ['LANG'] = 'en_US.UTF-8'
1905
sys.platform = 'darwin'
2039
# GZ 2011-12-19: On windows could call GetACP directly instead.
2040
user_encoding = locale.getpreferredencoding(False)
2043
user_encoding = codecs.lookup(user_encoding).name
2045
if user_encoding not in ("", "cp0"):
1910
user_encoding = locale.getpreferredencoding()
1911
except locale.Error, e:
1912
sys.stderr.write('bzr: warning: %s\n'
1913
' Could not determine what text encoding to use.\n'
1914
' This error usually means your Python interpreter\n'
1915
' doesn\'t support the locale set by $LANG (%s)\n'
1916
" Continuing with ascii encoding.\n"
1917
% (e, os.environ.get('LANG')))
1918
user_encoding = 'ascii'
1920
# Windows returns 'cp0' to indicate there is no code page. So we'll just
1921
# treat that as ASCII, and not support printing unicode characters to the
1924
# For python scripts run under vim, we get '', so also treat that as ASCII
1925
if user_encoding in (None, 'cp0', ''):
1926
user_encoding = 'ascii'
1930
codecs.lookup(user_encoding)
2046
1932
sys.stderr.write('bzr: warning:'
2047
1933
' unknown encoding %s.'
2048
1934
' Continuing with ascii encoding.\n'
2049
1935
% 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
1937
user_encoding = 'ascii'
1940
_cached_user_encoding = user_encoding
2063
1942
return user_encoding
2066
def get_diff_header_encoding():
2067
return get_terminal_encoding()
2070
1945
def get_host_name():
2071
1946
"""Return the current unicode host name.
2074
1949
behaves inconsistently on different platforms.
2076
1951
if sys.platform == "win32":
2077
1953
return win32utils.get_host_name()
2080
1956
return socket.gethostname().decode(get_user_encoding())
2083
# We must not read/write any more than 64k at a time from/to a socket so we
2084
# don't risk "no buffer space available" errors on some platforms. Windows in
2085
# particular is likely to throw WSAECONNABORTED or WSAENOBUFS if given too much
2087
MAX_SOCKET_CHUNK = 64 * 1024
2089
_end_of_stream_errors = [errno.ECONNRESET, errno.EPIPE, errno.EINVAL]
2090
for _eno in ['WSAECONNRESET', 'WSAECONNABORTED']:
2091
_eno = getattr(errno, _eno, None)
2092
if _eno is not None:
2093
_end_of_stream_errors.append(_eno)
2097
def read_bytes_from_socket(sock, report_activity=None,
2098
max_read_size=MAX_SOCKET_CHUNK):
2099
"""Read up to max_read_size of bytes from sock and notify of progress.
2101
Translates "Connection reset by peer" into file-like EOF (return an
2102
empty string rather than raise an error), and repeats the recv if
2103
interrupted by a signal.
2107
bytes = sock.recv(max_read_size)
2108
except socket.error, e:
2110
if eno in _end_of_stream_errors:
2111
# The connection was closed by the other side. Callers expect
2112
# an empty string to signal end-of-stream.
2114
elif eno == errno.EINTR:
2115
# Retry the interrupted recv.
2119
if report_activity is not None:
2120
report_activity(len(bytes), 'read')
2124
def recv_all(socket, count):
1959
def recv_all(socket, bytes):
2125
1960
"""Receive an exact number of bytes.
2127
1962
Regular Socket.recv() may return less than the requested number of bytes,
2128
depending on what's in the OS buffer. MSG_WAITALL is not available
1963
dependning on what's in the OS buffer. MSG_WAITALL is not available
2129
1964
on all platforms, but this should work everywhere. This will return
2130
1965
less than the requested amount if the remote end closes.
2132
1967
This isn't optimized and is intended mostly for use in testing.
2135
while len(b) < count:
2136
new = read_bytes_from_socket(socket, None, count - len(b))
1970
while len(b) < bytes:
1971
new = until_no_eintr(socket.recv, bytes - len(b))
2143
def send_all(sock, bytes, report_activity=None):
1978
def send_all(socket, bytes, report_activity=None):
2144
1979
"""Send all bytes on a socket.
2146
Breaks large blocks in smaller chunks to avoid buffering limitations on
2147
some platforms, and catches EINTR which may be thrown if the send is
2148
interrupted by a signal.
2150
This is preferred to socket.sendall(), because it avoids portability bugs
2151
and provides activity reporting.
1981
Regular socket.sendall() can give socket error 10053 on Windows. This
1982
implementation sends no more than 64k at a time, which avoids this problem.
2153
1984
:param report_activity: Call this as bytes are read, see
2154
1985
Transport._report_activity
2157
byte_count = len(bytes)
2158
while sent_total < byte_count:
2160
sent = sock.send(buffer(bytes, sent_total, MAX_SOCKET_CHUNK))
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)
2165
if e.args[0] != errno.EINTR:
2169
raise errors.ConnectionReset('Sending to %s returned 0 bytes'
2172
if report_activity is not None:
2173
report_activity(sent, 'write')
2176
def connect_socket(address):
2177
# Slight variation of the socket.create_connection() function (provided by
2178
# python-2.6) that can fail if getaddrinfo returns an empty list. We also
2179
# provide it for previous python versions. Also, we don't use the timeout
2180
# parameter (provided by the python implementation) so we don't implement
2182
err = socket.error('getaddrinfo returns an empty list')
2183
host, port = address
2184
for res in socket.getaddrinfo(host, port, 0, socket.SOCK_STREAM):
2185
af, socktype, proto, canonname, sa = res
2188
sock = socket.socket(af, socktype, proto)
2192
except socket.error, err:
2193
# 'err' is now the most recent error
2194
if sock is not None:
1988
for pos in xrange(0, len(bytes), chunk_size):
1989
block = bytes[pos:pos+chunk_size]
1990
if report_activity is not None:
1991
report_activity(len(block), 'write')
1992
until_no_eintr(socket.sendall, block)
2199
1995
def dereference_path(path):
2261
2055
return file_kind_from_stat_mode(mode)
2262
2056
file_kind_from_stat_mode = file_kind_from_stat_mode_thunk
2264
def file_stat(f, _lstat=os.lstat):
2059
def file_kind(f, _lstat=os.lstat):
2061
return file_kind_from_stat_mode(_lstat(f).st_mode)
2268
2062
except OSError, e:
2269
2063
if getattr(e, 'errno', None) in (errno.ENOENT, errno.ENOTDIR):
2270
2064
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)
2277
2068
def until_no_eintr(f, *a, **kw):
2278
"""Run f(*a, **kw), retrying if an EINTR error occurs.
2280
WARNING: you must be certain that it is safe to retry the call repeatedly
2281
if EINTR does occur. This is typically only true for low-level operations
2282
like os.read. If in any doubt, don't use this.
2284
Keep in mind that this is not a complete solution to EINTR. There is
2285
probably code in the Python standard library and other dependencies that
2286
may encounter EINTR if a signal arrives (and there is signal handler for
2287
that signal). So this function can reduce the impact for IO that bzrlib
2288
directly controls, but it is not a complete solution.
2069
"""Run f(*a, **kw), retrying if an EINTR error occurs."""
2290
2070
# Borrowed from Twisted's twisted.python.util.untilConcludes function.
2338
2116
termios.tcsetattr(fd, termios.TCSADRAIN, settings)
2341
if sys.platform.startswith('linux'):
2120
if sys.platform == 'linux2':
2342
2121
def _local_concurrency():
2344
return os.sysconf('SC_NPROCESSORS_ONLN')
2345
except (ValueError, OSError, AttributeError):
2123
prefix = 'processor'
2124
for line in file('/proc/cpuinfo', 'rb'):
2125
if line.startswith(prefix):
2126
concurrency = int(line[line.find(':')+1:]) + 1
2347
2128
elif sys.platform == 'darwin':
2348
2129
def _local_concurrency():
2349
2130
return subprocess.Popen(['sysctl', '-n', 'hw.availcpu'],
2350
2131
stdout=subprocess.PIPE).communicate()[0]
2351
elif "bsd" in sys.platform:
2132
elif sys.platform[0:7] == 'freebsd':
2352
2133
def _local_concurrency():
2353
2134
return subprocess.Popen(['sysctl', '-n', 'hw.ncpu'],
2354
2135
stdout=subprocess.PIPE).communicate()[0]
2457
2231
return os.fdopen(os.open(filename, flags), mode, bufsize)
2459
2233
open_file = open
2462
def available_backup_name(base, exists):
2463
"""Find a non-existing backup file name.
2465
This will *not* create anything, this only return a 'free' entry. This
2466
should be used for checking names in a directory below a locked
2467
tree/branch/repo to avoid race conditions. This is LBYL (Look Before You
2468
Leap) and generally discouraged.
2470
:param base: The base name.
2472
:param exists: A callable returning True if the path parameter exists.
2475
name = "%s.~%d~" % (base, counter)
2478
name = "%s.~%d~" % (base, counter)
2482
def set_fd_cloexec(fd):
2483
"""Set a Unix file descriptor's FD_CLOEXEC flag. Do nothing if platform
2484
support for this is not available.
2488
old = fcntl.fcntl(fd, fcntl.F_GETFD)
2489
fcntl.fcntl(fd, fcntl.F_SETFD, old | fcntl.FD_CLOEXEC)
2490
except (ImportError, AttributeError):
2491
# Either the fcntl module or specific constants are not present
2495
def find_executable_on_path(name):
2496
"""Finds an executable on the PATH.
2498
On Windows, this will try to append each extension in the PATHEXT
2499
environment variable to the name, if it cannot be found with the name
2502
:param name: The base name of the executable.
2503
:return: The path to the executable found or None.
2505
if sys.platform == 'win32':
2506
exts = os.environ.get('PATHEXT', '').split(os.pathsep)
2507
exts = [ext.lower() for ext in exts]
2508
base, ext = os.path.splitext(name)
2510
if ext.lower() not in exts:
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
