105
100
mod = os.lstat(filename).st_mode
106
101
if not stat.S_ISLNK(mod):
107
102
mod = mod & 0777555
108
os.chmod(filename, mod)
103
chmod_if_possible(filename, mod)
111
106
def make_writable(filename):
112
107
mod = os.lstat(filename).st_mode
113
108
if not stat.S_ISLNK(mod):
115
os.chmod(filename, mod)
110
chmod_if_possible(filename, mod)
113
def chmod_if_possible(filename, mode):
114
# Set file mode if that can be safely done.
115
# Sometimes even on unix the filesystem won't allow it - see
116
# https://bugs.launchpad.net/bzr/+bug/606537
118
# It is probably faster to just do the chmod, rather than
119
# doing a stat, and then trying to compare
120
os.chmod(filename, mode)
121
except (IOError, OSError),e:
122
# Permission/access denied seems to commonly happen on smbfs; there's
123
# probably no point warning about it.
124
# <https://bugs.launchpad.net/bzr/+bug/606537>
125
if getattr(e, 'errno') in (errno.EPERM, errno.EACCES):
126
trace.mutter("ignore error on chmod of %r: %r" % (
118
132
def minimum_path_selection(paths):
270
284
rename_func(tmp_name, new)
271
285
if failure_exc is not None:
272
raise failure_exc[0], failure_exc[1], failure_exc[2]
287
raise failure_exc[0], failure_exc[1], failure_exc[2]
275
292
# In Python 2.4.2 and older, os.path.abspath and os.path.realpath
276
293
# choke on a Unicode string containing a relative path if
277
294
# os.getcwd() returns a non-sys.getdefaultencoding()-encoded
279
_fs_enc = sys.getfilesystemencoding() or 'utf-8'
280
296
def _posix_abspath(path):
281
297
# jam 20060426 rather than encoding to fsencoding
282
298
# copy posixpath.abspath, but use os.getcwdu instead
283
299
if not posixpath.isabs(path):
284
300
path = posixpath.join(getcwd(), path)
285
return posixpath.normpath(path)
301
return _posix_normpath(path)
288
304
def _posix_realpath(path):
289
305
return posixpath.realpath(path.encode(_fs_enc)).decode(_fs_enc)
308
def _posix_normpath(path):
309
path = posixpath.normpath(path)
310
# Bug 861008: posixpath.normpath() returns a path normalized according to
311
# the POSIX standard, which stipulates (for compatibility reasons) that two
312
# leading slashes must not be simplified to one, and only if there are 3 or
313
# more should they be simplified as one. So we treat the leading 2 slashes
314
# as a special case here by simply removing the first slash, as we consider
315
# that breaking POSIX compatibility for this obscure feature is acceptable.
316
# This is not a paranoid precaution, as we notably get paths like this when
317
# the repo is hosted at the root of the filesystem, i.e. in "/".
318
if path.startswith('//'):
292
323
def _win32_fixdrive(path):
293
324
"""Force drive letters to be consistent.
1973
2023
return get_terminal_encoding()
2026
_message_encoding = None
2029
def get_message_encoding():
2030
"""Return the encoding used for messages
2032
While the message encoding is a general setting it should usually only be
2033
needed for decoding system error strings such as from OSError instances.
2035
global _message_encoding
2036
if _message_encoding is None:
2037
if os.name == "posix":
2039
# This is a process-global setting that can change, but should in
2040
# general just get set once at process startup then be constant.
2041
_message_encoding = locale.getlocale(locale.LC_MESSAGES)[1]
2043
# On windows want the result of GetACP() which this boils down to.
2044
_message_encoding = get_user_encoding()
2045
return _message_encoding or "ascii"
1976
2048
def get_host_name():
1977
2049
"""Return the current unicode host name.
2153
2233
return file_kind_from_stat_mode(mode)
2154
2234
file_kind_from_stat_mode = file_kind_from_stat_mode_thunk
2157
def file_kind(f, _lstat=os.lstat):
2236
def file_stat(f, _lstat=os.lstat):
2159
return file_kind_from_stat_mode(_lstat(f).st_mode)
2160
2240
except OSError, e:
2161
2241
if getattr(e, 'errno', None) in (errno.ENOENT, errno.ENOTDIR):
2162
2242
raise errors.NoSuchFile(f)
2245
def file_kind(f, _lstat=os.lstat):
2246
stat_value = file_stat(f, _lstat)
2247
return file_kind_from_stat_mode(stat_value.st_mode)
2166
2249
def until_no_eintr(f, *a, **kw):
2167
2250
"""Run f(*a, **kw), retrying if an EINTR error occurs.
2227
2310
termios.tcsetattr(fd, termios.TCSADRAIN, settings)
2231
if sys.platform == 'linux2':
2313
if sys.platform.startswith('linux'):
2232
2314
def _local_concurrency():
2234
prefix = 'processor'
2235
for line in file('/proc/cpuinfo', 'rb'):
2236
if line.startswith(prefix):
2237
concurrency = int(line[line.find(':')+1:]) + 1
2316
return os.sysconf('SC_NPROCESSORS_ONLN')
2317
except (ValueError, OSError, AttributeError):
2239
2319
elif sys.platform == 'darwin':
2240
2320
def _local_concurrency():
2241
2321
return subprocess.Popen(['sysctl', '-n', 'hw.availcpu'],
2242
2322
stdout=subprocess.PIPE).communicate()[0]
2243
elif sys.platform[0:7] == 'freebsd':
2323
elif "bsd" in sys.platform:
2244
2324
def _local_concurrency():
2245
2325
return subprocess.Popen(['sysctl', '-n', 'hw.ncpu'],
2246
2326
stdout=subprocess.PIPE).communicate()[0]
2353
2440
except UnicodeDecodeError:
2354
2441
raise errors.BzrError("Can't decode username as %s." % \
2443
except ImportError, e:
2444
if sys.platform != 'win32':
2446
if str(e) != 'No module named pwd':
2448
# https://bugs.launchpad.net/bzr/+bug/660174
2449
# getpass.getuser() is unable to return username on Windows
2450
# if there is no USERNAME environment variable set.
2451
# That could be true if bzr is running as a service,
2452
# e.g. running `bzr serve` as a service on Windows.
2453
# We should not fail with traceback in this case.
2454
username = u'UNKNOWN'
2356
2455
return username
2458
def available_backup_name(base, exists):
2459
"""Find a non-existing backup file name.
2461
This will *not* create anything, this only return a 'free' entry. This
2462
should be used for checking names in a directory below a locked
2463
tree/branch/repo to avoid race conditions. This is LBYL (Look Before You
2464
Leap) and generally discouraged.
2466
:param base: The base name.
2468
:param exists: A callable returning True if the path parameter exists.
2471
name = "%s.~%d~" % (base, counter)
2474
name = "%s.~%d~" % (base, counter)
2478
def set_fd_cloexec(fd):
2479
"""Set a Unix file descriptor's FD_CLOEXEC flag. Do nothing if platform
2480
support for this is not available.
2484
old = fcntl.fcntl(fd, fcntl.F_GETFD)
2485
fcntl.fcntl(fd, fcntl.F_SETFD, old | fcntl.FD_CLOEXEC)
2486
except (ImportError, AttributeError):
2487
# Either the fcntl module or specific constants are not present
2491
def find_executable_on_path(name):
2492
"""Finds an executable on the PATH.
2494
On Windows, this will try to append each extension in the PATHEXT
2495
environment variable to the name, if it cannot be found with the name
2498
:param name: The base name of the executable.
2499
:return: The path to the executable found or None.
2501
path = os.environ.get('PATH')
2504
path = path.split(os.pathsep)
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:
2518
f = os.path.join(d, name) + ext
2519
if os.access(f, os.X_OK):
2524
def _posix_is_local_pid_dead(pid):
2525
"""True if pid doesn't correspond to live process on this machine"""
2527
# Special meaning of unix kill: just check if it's there.
2530
if e.errno == errno.ESRCH:
2531
# On this machine, and really not found: as sure as we can be
2534
elif e.errno == errno.EPERM:
2535
# exists, though not ours
2538
mutter("os.kill(%d, 0) failed: %s" % (pid, e))
2539
# Don't really know.
2542
# Exists and our process: not dead.
2545
if sys.platform == "win32":
2546
is_local_pid_dead = win32utils.is_local_pid_dead
2548
is_local_pid_dead = _posix_is_local_pid_dead
2551
def fdatasync(fileno):
2552
"""Flush file contents to disk if possible.
2554
:param fileno: Integer OS file handle.
2555
:raises TransportNotPossible: If flushing to disk is not possible.
2557
fn = getattr(os, 'fdatasync', getattr(os, 'fsync', None))
2562
def ensure_empty_directory_exists(path, exception_class):
2563
"""Make sure a local directory exists and is empty.
2565
If it does not exist, it is created. If it exists and is not empty, an
2566
instance of exception_class is raised.
2571
if e.errno != errno.EEXIST:
2573
if os.listdir(path) != []:
2574
raise exception_class(path)
2577
def is_environment_error(evalue):
2578
"""True if exception instance is due to a process environment issue
2580
This includes OSError and IOError, but also other errors that come from
2581
the operating system or core libraries but are not subclasses of those.
2583
if isinstance(evalue, (EnvironmentError, select.error)):
2585
if sys.platform == "win32" and win32utils._is_pywintypes_error(evalue):
added
removed
bzrlib/osutils.py
