def _apply_operation_to_mode(user, operator, mode_to_apply, current_mode):
if operator == '=':
if user == 'u':
mask = stat.S_IRWXU | stat.S_ISUID
elif user == 'g':
mask = stat.S_IRWXG | stat.S_ISGID
elif user == 'o':
mask = stat.S_IRWXO | stat.S_ISVTX
# mask out u, g, or o permissions from current_mode and apply new permissions
inverse_mask = mask ^ PERM_BITS
new_mode = (current_mode & inverse_mask) | mode_to_apply
elif operator == '+':
new_mode = current_mode | mode_to_apply
elif operator == '-':
new_mode = current_mode - (current_mode & mode_to_apply)
return new_mode
python类S_ISGID的实例源码
def statinfo(st):
return {
'mode' : "%04o" % stat.S_IMODE(st.st_mode),
'isdir' : stat.S_ISDIR(st.st_mode),
'ischr' : stat.S_ISCHR(st.st_mode),
'isblk' : stat.S_ISBLK(st.st_mode),
'isreg' : stat.S_ISREG(st.st_mode),
'isfifo' : stat.S_ISFIFO(st.st_mode),
'islnk' : stat.S_ISLNK(st.st_mode),
'issock' : stat.S_ISSOCK(st.st_mode),
'uid' : st.st_uid,
'gid' : st.st_gid,
'size' : st.st_size,
'inode' : st.st_ino,
'dev' : st.st_dev,
'nlink' : st.st_nlink,
'atime' : st.st_atime,
'mtime' : st.st_mtime,
'ctime' : st.st_ctime,
'wusr' : bool(st.st_mode & stat.S_IWUSR),
'rusr' : bool(st.st_mode & stat.S_IRUSR),
'xusr' : bool(st.st_mode & stat.S_IXUSR),
'wgrp' : bool(st.st_mode & stat.S_IWGRP),
'rgrp' : bool(st.st_mode & stat.S_IRGRP),
'xgrp' : bool(st.st_mode & stat.S_IXGRP),
'woth' : bool(st.st_mode & stat.S_IWOTH),
'roth' : bool(st.st_mode & stat.S_IROTH),
'xoth' : bool(st.st_mode & stat.S_IXOTH),
'isuid' : bool(st.st_mode & stat.S_ISUID),
'isgid' : bool(st.st_mode & stat.S_ISGID),
}
def _apply_operation_to_mode(self, user, operator, mode_to_apply, current_mode):
if operator == '=':
if user == 'u': mask = stat.S_IRWXU | stat.S_ISUID
elif user == 'g': mask = stat.S_IRWXG | stat.S_ISGID
elif user == 'o': mask = stat.S_IRWXO | stat.S_ISVTX
# mask out u, g, or o permissions from current_mode and apply new permissions
inverse_mask = mask ^ PERM_BITS
new_mode = (current_mode & inverse_mask) | mode_to_apply
elif operator == '+':
new_mode = current_mode | mode_to_apply
elif operator == '-':
new_mode = current_mode - (current_mode & mode_to_apply)
return new_mode
def test_exist_ok_s_isgid_directory(self):
path = os.path.join(support.TESTFN, 'dir1')
S_ISGID = stat.S_ISGID
mode = 0o777
old_mask = os.umask(0o022)
try:
existing_testfn_mode = stat.S_IMODE(
os.lstat(support.TESTFN).st_mode)
try:
os.chmod(support.TESTFN, existing_testfn_mode | S_ISGID)
except PermissionError:
raise unittest.SkipTest('Cannot set S_ISGID for dir.')
if (os.lstat(support.TESTFN).st_mode & S_ISGID != S_ISGID):
raise unittest.SkipTest('No support for S_ISGID dir mode.')
# The os should apply S_ISGID from the parent dir for us, but
# this test need not depend on that behavior. Be explicit.
os.makedirs(path, mode | S_ISGID)
# http://bugs.python.org/issue14992
# Should not fail when the bit is already set.
os.makedirs(path, mode, exist_ok=True)
# remove the bit.
os.chmod(path, stat.S_IMODE(os.lstat(path).st_mode) & ~S_ISGID)
with self.assertRaises(OSError):
# Should fail when the bit is not already set when demanded.
os.makedirs(path, mode | S_ISGID, exist_ok=True)
finally:
os.umask(old_mask)
def test_exist_ok_s_isgid_directory(self):
path = os.path.join(support.TESTFN, 'dir1')
S_ISGID = stat.S_ISGID
mode = 0o777
old_mask = os.umask(0o022)
try:
existing_testfn_mode = stat.S_IMODE(
os.lstat(support.TESTFN).st_mode)
try:
os.chmod(support.TESTFN, existing_testfn_mode | S_ISGID)
except PermissionError:
raise unittest.SkipTest('Cannot set S_ISGID for dir.')
if (os.lstat(support.TESTFN).st_mode & S_ISGID != S_ISGID):
raise unittest.SkipTest('No support for S_ISGID dir mode.')
# The os should apply S_ISGID from the parent dir for us, but
# this test need not depend on that behavior. Be explicit.
os.makedirs(path, mode | S_ISGID)
# http://bugs.python.org/issue14992
# Should not fail when the bit is already set.
os.makedirs(path, mode, exist_ok=True)
# remove the bit.
os.chmod(path, stat.S_IMODE(os.lstat(path).st_mode) & ~S_ISGID)
# May work even when the bit is not already set when demanded.
os.makedirs(path, mode | S_ISGID, exist_ok=True)
finally:
os.umask(old_mask)
def test_exist_ok_s_isgid_directory(self):
path = os.path.join(support.TESTFN, 'dir1')
S_ISGID = stat.S_ISGID
mode = 0o777
old_mask = os.umask(0o022)
try:
existing_testfn_mode = stat.S_IMODE(
os.lstat(support.TESTFN).st_mode)
try:
os.chmod(support.TESTFN, existing_testfn_mode | S_ISGID)
except PermissionError:
raise unittest.SkipTest('Cannot set S_ISGID for dir.')
if (os.lstat(support.TESTFN).st_mode & S_ISGID != S_ISGID):
raise unittest.SkipTest('No support for S_ISGID dir mode.')
# The os should apply S_ISGID from the parent dir for us, but
# this test need not depend on that behavior. Be explicit.
os.makedirs(path, mode | S_ISGID)
# http://bugs.python.org/issue14992
# Should not fail when the bit is already set.
os.makedirs(path, mode, exist_ok=True)
# remove the bit.
os.chmod(path, stat.S_IMODE(os.lstat(path).st_mode) & ~S_ISGID)
# May work even when the bit is not already set when demanded.
os.makedirs(path, mode | S_ISGID, exist_ok=True)
finally:
os.umask(old_mask)
def humanUnixAttributes(mode):
"""
Convert a Unix file attributes (or "file mode") to an unicode string.
Original source code:
http://cvs.savannah.gnu.org/viewcvs/coreutils/lib/filemode.c?root=coreutils
>>> humanUnixAttributes(0o644)
'-rw-r--r-- (644)'
>>> humanUnixAttributes(0o2755)
'-rwxr-sr-x (2755)'
"""
chars = [_ftypelet(mode), 'r', 'w', 'x', 'r', 'w', 'x', 'r', 'w', 'x']
for i in range(1, 10):
if not mode & 1 << 9 - i:
chars[i] = '-'
if mode & stat.S_ISUID:
if chars[3] != 'x':
chars[3] = 'S'
else:
chars[3] = 's'
if mode & stat.S_ISGID:
if chars[6] != 'x':
chars[6] = 'S'
else:
chars[6] = 's'
if mode & stat.S_ISVTX:
if chars[9] != 'x':
chars[9] = 'T'
else:
chars[9] = 't'
return "%s (%o)" % (''.join(chars), mode)
def test_sets_setuid_and_setgid_when_told_to(self):
self.metadata.st_mode = 0777 | stat.S_ISUID | stat.S_ISGID
obnamlib.set_metadata(self.fs, self.filename, self.metadata,
always_set_id_bits=True)
st = os.stat(self.filename)
self.assertEqual(st.st_mode & stat.S_ISUID, stat.S_ISUID)
self.assertEqual(st.st_mode & stat.S_ISGID, stat.S_ISGID)
def lsLine(name, s):
mode = s.st_mode
perms = array.array('c', '-'*10)
ft = stat.S_IFMT(mode)
if stat.S_ISDIR(ft): perms[0] = 'd'
elif stat.S_ISCHR(ft): perms[0] = 'c'
elif stat.S_ISBLK(ft): perms[0] = 'b'
elif stat.S_ISREG(ft): perms[0] = '-'
elif stat.S_ISFIFO(ft): perms[0] = 'f'
elif stat.S_ISLNK(ft): perms[0] = 'l'
elif stat.S_ISSOCK(ft): perms[0] = 's'
else: perms[0] = '!'
# user
if mode&stat.S_IRUSR:perms[1] = 'r'
if mode&stat.S_IWUSR:perms[2] = 'w'
if mode&stat.S_IXUSR:perms[3] = 'x'
# group
if mode&stat.S_IRGRP:perms[4] = 'r'
if mode&stat.S_IWGRP:perms[5] = 'w'
if mode&stat.S_IXGRP:perms[6] = 'x'
# other
if mode&stat.S_IROTH:perms[7] = 'r'
if mode&stat.S_IWOTH:perms[8] = 'w'
if mode&stat.S_IXOTH:perms[9] = 'x'
# suid/sgid
if mode&stat.S_ISUID:
if perms[3] == 'x': perms[3] = 's'
else: perms[3] = 'S'
if mode&stat.S_ISGID:
if perms[6] == 'x': perms[6] = 's'
else: perms[6] = 'S'
l = perms.tostring()
l += str(s.st_nlink).rjust(5) + ' '
un = str(s.st_uid)
l += un.ljust(9)
gr = str(s.st_gid)
l += gr.ljust(9)
sz = str(s.st_size)
l += sz.rjust(8)
l += ' '
sixmo = 60 * 60 * 24 * 7 * 26
if s.st_mtime + sixmo < time.time(): # last edited more than 6mo ago
l += time.strftime("%b %2d %Y ", time.localtime(s.st_mtime))
else:
l += time.strftime("%b %2d %H:%S ", time.localtime(s.st_mtime))
l += name
return l
def __str__(self):
"create a unix-style long description of the file (like ls -l)"
if self.st_mode is not None:
kind = stat.S_IFMT(self.st_mode)
if kind == stat.S_IFIFO:
ks = 'p'
elif kind == stat.S_IFCHR:
ks = 'c'
elif kind == stat.S_IFDIR:
ks = 'd'
elif kind == stat.S_IFBLK:
ks = 'b'
elif kind == stat.S_IFREG:
ks = '-'
elif kind == stat.S_IFLNK:
ks = 'l'
elif kind == stat.S_IFSOCK:
ks = 's'
else:
ks = '?'
ks += self._rwx((self.st_mode & 0700) >> 6, self.st_mode & stat.S_ISUID)
ks += self._rwx((self.st_mode & 070) >> 3, self.st_mode & stat.S_ISGID)
ks += self._rwx(self.st_mode & 7, self.st_mode & stat.S_ISVTX, True)
else:
ks = '?---------'
# compute display date
if (self.st_mtime is None) or (self.st_mtime == 0xffffffffL):
# shouldn't really happen
datestr = '(unknown date)'
else:
if abs(time.time() - self.st_mtime) > 15552000:
# (15552000 = 6 months)
datestr = time.strftime('%d %b %Y', time.localtime(self.st_mtime))
else:
datestr = time.strftime('%d %b %H:%M', time.localtime(self.st_mtime))
filename = getattr(self, 'filename', '?')
# not all servers support uid/gid
uid = self.st_uid
gid = self.st_gid
if uid is None:
uid = 0
if gid is None:
gid = 0
return '%s 1 %-8d %-8d %8d %-12s %s' % (ks, uid, gid, self.st_size, datestr, filename)
def _get_octal_mode_from_symbolic_perms(self, path_stat, user, perms):
prev_mode = stat.S_IMODE(path_stat.st_mode)
is_directory = stat.S_ISDIR(path_stat.st_mode)
has_x_permissions = (prev_mode & EXEC_PERM_BITS) > 0
apply_X_permission = is_directory or has_x_permissions
# Permission bits constants documented at:
# http://docs.python.org/2/library/stat.html#stat.S_ISUID
if apply_X_permission:
X_perms = {
'u': {'X': stat.S_IXUSR},
'g': {'X': stat.S_IXGRP},
'o': {'X': stat.S_IXOTH}
}
else:
X_perms = {
'u': {'X': 0},
'g': {'X': 0},
'o': {'X': 0}
}
user_perms_to_modes = {
'u': {
'r': stat.S_IRUSR,
'w': stat.S_IWUSR,
'x': stat.S_IXUSR,
's': stat.S_ISUID,
't': 0,
'u': prev_mode & stat.S_IRWXU,
'g': (prev_mode & stat.S_IRWXG) << 3,
'o': (prev_mode & stat.S_IRWXO) << 6 },
'g': {
'r': stat.S_IRGRP,
'w': stat.S_IWGRP,
'x': stat.S_IXGRP,
's': stat.S_ISGID,
't': 0,
'u': (prev_mode & stat.S_IRWXU) >> 3,
'g': prev_mode & stat.S_IRWXG,
'o': (prev_mode & stat.S_IRWXO) << 3 },
'o': {
'r': stat.S_IROTH,
'w': stat.S_IWOTH,
'x': stat.S_IXOTH,
's': 0,
't': stat.S_ISVTX,
'u': (prev_mode & stat.S_IRWXU) >> 6,
'g': (prev_mode & stat.S_IRWXG) >> 3,
'o': prev_mode & stat.S_IRWXO }
}
# Insert X_perms into user_perms_to_modes
for key, value in X_perms.items():
user_perms_to_modes[key].update(value)
or_reduce = lambda mode, perm: mode | user_perms_to_modes[user][perm]
return reduce(or_reduce, perms, 0)
def __str__(self):
"""create a unix-style long description of the file (like ls -l)"""
if self.st_mode is not None:
kind = stat.S_IFMT(self.st_mode)
if kind == stat.S_IFIFO:
ks = 'p'
elif kind == stat.S_IFCHR:
ks = 'c'
elif kind == stat.S_IFDIR:
ks = 'd'
elif kind == stat.S_IFBLK:
ks = 'b'
elif kind == stat.S_IFREG:
ks = '-'
elif kind == stat.S_IFLNK:
ks = 'l'
elif kind == stat.S_IFSOCK:
ks = 's'
else:
ks = '?'
ks += self._rwx((self.st_mode & o700) >> 6, self.st_mode & stat.S_ISUID)
ks += self._rwx((self.st_mode & o70) >> 3, self.st_mode & stat.S_ISGID)
ks += self._rwx(self.st_mode & 7, self.st_mode & stat.S_ISVTX, True)
else:
ks = '?---------'
# compute display date
if (self.st_mtime is None) or (self.st_mtime == xffffffff):
# shouldn't really happen
datestr = '(unknown date)'
else:
if abs(time.time() - self.st_mtime) > 15552000:
# (15552000 = 6 months)
datestr = time.strftime('%d %b %Y', time.localtime(self.st_mtime))
else:
datestr = time.strftime('%d %b %H:%M', time.localtime(self.st_mtime))
filename = getattr(self, 'filename', '?')
# not all servers support uid/gid
uid = self.st_uid
gid = self.st_gid
if uid is None:
uid = 0
if gid is None:
gid = 0
return '%s 1 %-8d %-8d %8d %-12s %s' % (ks, uid, gid, self.st_size, datestr, filename)
def lsLine(name, s):
mode = s.st_mode
perms = array.array('c', '-'*10)
ft = stat.S_IFMT(mode)
if stat.S_ISDIR(ft): perms[0] = 'd'
elif stat.S_ISCHR(ft): perms[0] = 'c'
elif stat.S_ISBLK(ft): perms[0] = 'b'
elif stat.S_ISREG(ft): perms[0] = '-'
elif stat.S_ISFIFO(ft): perms[0] = 'f'
elif stat.S_ISLNK(ft): perms[0] = 'l'
elif stat.S_ISSOCK(ft): perms[0] = 's'
else: perms[0] = '!'
# user
if mode&stat.S_IRUSR:perms[1] = 'r'
if mode&stat.S_IWUSR:perms[2] = 'w'
if mode&stat.S_IXUSR:perms[3] = 'x'
# group
if mode&stat.S_IRGRP:perms[4] = 'r'
if mode&stat.S_IWGRP:perms[5] = 'w'
if mode&stat.S_IXGRP:perms[6] = 'x'
# other
if mode&stat.S_IROTH:perms[7] = 'r'
if mode&stat.S_IWOTH:perms[8] = 'w'
if mode&stat.S_IXOTH:perms[9] = 'x'
# suid/sgid
if mode&stat.S_ISUID:
if perms[3] == 'x': perms[3] = 's'
else: perms[3] = 'S'
if mode&stat.S_ISGID:
if perms[6] == 'x': perms[6] = 's'
else: perms[6] = 'S'
l = perms.tostring()
l += str(s.st_nlink).rjust(5) + ' '
un = str(s.st_uid)
l += un.ljust(9)
gr = str(s.st_gid)
l += gr.ljust(9)
sz = str(s.st_size)
l += sz.rjust(8)
l += ' '
sixmo = 60 * 60 * 24 * 7 * 26
if s.st_mtime + sixmo < time.time(): # last edited more than 6mo ago
l += time.strftime("%b %2d %Y ", time.localtime(s.st_mtime))
else:
l += time.strftime("%b %2d %H:%S ", time.localtime(s.st_mtime))
l += name
return l
def makedirs(name, mode=0o777, exist_ok=False):
"""makedirs(path [, mode=0o777][, exist_ok=False])
Super-mkdir; create a leaf directory and all intermediate ones.
Works like mkdir, except that any intermediate path segment (not
just the rightmost) will be created if it does not exist. If the
target directory with the same mode as we specified already exists,
raises an OSError if exist_ok is False, otherwise no exception is
raised. This is recursive.
"""
head, tail = path.split(name)
if not tail:
head, tail = path.split(head)
if head and tail and not path.exists(head):
try:
makedirs(head, mode, exist_ok)
except OSError as e:
# be happy if someone already created the path
if e.errno != errno.EEXIST:
raise
cdir = curdir
if isinstance(tail, bytes):
cdir = bytes(curdir, 'ASCII')
if tail == cdir: # xxx/newdir/. exists if xxx/newdir exists
return
try:
mkdir(name, mode)
except OSError as e:
dir_exists = path.isdir(name)
expected_mode = _get_masked_mode(mode)
if dir_exists:
# S_ISGID is automatically copied by the OS from parent to child
# directories on mkdir. Don't consider it being set to be a mode
# mismatch as mkdir does not unset it when not specified in mode.
actual_mode = st.S_IMODE(lstat(name).st_mode) & ~st.S_ISGID
else:
actual_mode = -1
if not (e.errno == errno.EEXIST and exist_ok and dir_exists and
actual_mode == expected_mode):
if dir_exists and actual_mode != expected_mode:
e.strerror += ' (mode %o != expected mode %o)' % (
actual_mode, expected_mode)
raise
def ensure_dirs_gw(path, _parent_mode=False):
"""Ensure that path is a directory by creating it and parents if
necessary. Also ensure that it is group-writeable and
-executable, and setgid. All created parent directories get their
mode bits set comparably.
This is a fairly specialized function used in support of the NRAO
Lustre staging feature.
Implementation copied from os.makedirs() with some tweaks.
"""
import os.path
import stat
head, tail = os.path.split(path) # /a/b/c => /a/b, c
if not len(tail): # if we got something like "a/b/" => ("a/b", "")
head, tail = os.path.split(head)
if len(head) and head != '/':
ensure_dirs_gw(head, _parent_mode=True)
try_chmod = not _parent_mode # deepest directory must be g+wxs
try:
# Note: the `mode` passed to mkdir is altered by the umask, which may
# remove the group-write bit we want, so we can't rely on it to set
# permissions correctly.
os.mkdir(path)
try_chmod = True # we created it, so definitely chmod
except OSError as e:
if e.errno == 17:
pass # already exists; no problem, and maybe no chmod
elif e.errno == 13: # EACCES
raise Exception('unable to create directory \"%s\"; you probably '
'need to make its parent group-writeable with:\n\n'
'chmod g+wx \'%s\'' % (path, os.path.dirname(path)))
else:
raise
if try_chmod:
st = os.stat(path)
mode = stat.S_IMODE(st.st_mode)
new_mode = mode | (stat.S_IWUSR | stat.S_IWGRP | stat.S_IXUSR | stat.S_IXGRP | stat.S_ISGID)
if new_mode != mode: # avoid failure if perms are OK but we don't own the dir
try:
os.chmod(path, new_mode)
except OSError as e:
if e.errno == 1: # EPERM
raise Exception('unable to make \"%s\" group-writeable; '
'please do so yourself with:\n\nchmod g+wx \'%s\''
% (path, path))
raise
def copyfiletree(src, dst):
"""Something like shutil.copytree that just copies data, not mode
bits, and that will accept either a file or a directory as input.
*dst* may not be the name of containing directory. It must be the
name where the data in *src* are intended to land.
As a special hack, we make the new files and directories
group-writeable, since this function is used at NRAO when staging
data to Lustre and otherwise users can't actually modify the
files/dirs created for them, which is super annoying.
"""
import os.path
from shutil import copyfile
import stat
try:
items = os.listdir(src)
except OSError as e:
if e.errno == 20: # not a directory?
copyfile(src, dst)
st = os.stat(dst) # NOTE! not src; we explicitly do not preserve perms
mode = stat.S_IMODE(st.st_mode)
mode |= (stat.S_IWUSR | stat.S_IWGRP)
os.chmod(dst, mode)
return
raise
os.mkdir(dst)
st = os.stat(dst) # NOTE! not src; we explicitly do not preserve perms
mode = stat.S_IMODE(st.st_mode)
mode |= (stat.S_IWUSR | stat.S_IWGRP | stat.S_IXUSR | stat.S_IXGRP | stat.S_ISGID)
os.chmod(dst, mode)
for item in items:
copyfiletree(
os.path.join(src, item),
os.path.join(dst, item)
)
# Misc ...
def __str__(self):
"""create a unix-style long description of the file (like ls -l)"""
if self.st_mode is not None:
kind = stat.S_IFMT(self.st_mode)
if kind == stat.S_IFIFO:
ks = 'p'
elif kind == stat.S_IFCHR:
ks = 'c'
elif kind == stat.S_IFDIR:
ks = 'd'
elif kind == stat.S_IFBLK:
ks = 'b'
elif kind == stat.S_IFREG:
ks = '-'
elif kind == stat.S_IFLNK:
ks = 'l'
elif kind == stat.S_IFSOCK:
ks = 's'
else:
ks = '?'
ks += self._rwx((self.st_mode & o700) >> 6, self.st_mode & stat.S_ISUID)
ks += self._rwx((self.st_mode & o70) >> 3, self.st_mode & stat.S_ISGID)
ks += self._rwx(self.st_mode & 7, self.st_mode & stat.S_ISVTX, True)
else:
ks = '?---------'
# compute display date
if (self.st_mtime is None) or (self.st_mtime == xffffffff):
# shouldn't really happen
datestr = '(unknown date)'
else:
if abs(time.time() - self.st_mtime) > 15552000:
# (15552000 = 6 months)
datestr = time.strftime('%d %b %Y', time.localtime(self.st_mtime))
else:
datestr = time.strftime('%d %b %H:%M', time.localtime(self.st_mtime))
filename = getattr(self, 'filename', '?')
# not all servers support uid/gid
uid = self.st_uid
gid = self.st_gid
size = self.st_size
if uid is None:
uid = 0
if gid is None:
gid = 0
if size is None:
size = 0
return '%s 1 %-8d %-8d %8d %-12s %s' % (ks, uid, gid, size, datestr, filename)
def __str__(self):
"""create a unix-style long description of the file (like ls -l)"""
if self.st_mode is not None:
kind = stat.S_IFMT(self.st_mode)
if kind == stat.S_IFIFO:
ks = 'p'
elif kind == stat.S_IFCHR:
ks = 'c'
elif kind == stat.S_IFDIR:
ks = 'd'
elif kind == stat.S_IFBLK:
ks = 'b'
elif kind == stat.S_IFREG:
ks = '-'
elif kind == stat.S_IFLNK:
ks = 'l'
elif kind == stat.S_IFSOCK:
ks = 's'
else:
ks = '?'
ks += self._rwx((self.st_mode & o700) >> 6, self.st_mode & stat.S_ISUID)
ks += self._rwx((self.st_mode & o70) >> 3, self.st_mode & stat.S_ISGID)
ks += self._rwx(self.st_mode & 7, self.st_mode & stat.S_ISVTX, True)
else:
ks = '?---------'
# compute display date
if (self.st_mtime is None) or (self.st_mtime == xffffffff):
# shouldn't really happen
datestr = '(unknown date)'
else:
if abs(time.time() - self.st_mtime) > 15552000:
# (15552000 = 6 months)
datestr = time.strftime('%d %b %Y', time.localtime(self.st_mtime))
else:
datestr = time.strftime('%d %b %H:%M', time.localtime(self.st_mtime))
filename = getattr(self, 'filename', '?')
# not all servers support uid/gid
uid = self.st_uid
gid = self.st_gid
size = self.st_size
if uid is None:
uid = 0
if gid is None:
gid = 0
if size is None:
size = 0
return '%s 1 %-8d %-8d %8d %-12s %s' % (ks, uid, gid, size, datestr, filename)
def setattr(self, inode, attr, fields, fh, ctx):
assert self._initialized
inode = self.forest.inodes.get_by_value(inode)
de = inode.direntry
pending_changes = {}
mode_filter = 0
if fields.update_uid:
now_st_uid = de.data['st_uid']
if attr.st_uid >= 0 and attr.st_uid != now_st_uid:
assert_or_errno(not ctx.uid, EPERM, 'nonroot setting uid')
# Non-root can only do nop uid change
pending_changes['st_uid'] = attr.st_uid
if fields.update_gid:
# Non-root can change gid to one he has, if he owns the file
now_st_uid = de.data['st_uid']
now_st_gid = de.data['st_gid']
if attr.st_gid >= 0 and attr.st_gid != now_st_gid:
assert_or_errno(not ctx.uid
or (ctx.uid == now_st_uid
and self._ctx_has_gid(ctx, attr.st_gid)),
EPERM, 'nonroot setting gid')
pending_changes['st_gid'] = attr.st_gid
if ctx.uid:
mode_filter = stat.S_ISUID | stat.S_ISGID
# Non-root setuid/gid should reset setuid/gid
if fields.update_mode:
# TBD: use S_IFMT + S_IMODE to filter this or not?
pending_changes['st_mode'] = attr.st_mode & ~mode_filter
elif mode_filter:
pending_changes['st_mode'] = de.data['st_mode'] & ~mode_filter
if fields.update_mtime:
_debug('%s mtime set to %s', inode, attr.st_mtime_ns)
pending_changes['st_mtime_ns'] = attr.st_mtime_ns
if fields.update_size:
pending_changes['st_size'] = attr.st_size
pending_changes = {k: v for k, v in pending_changes.items()
if k not in de.data or de.data[k] != v}
if pending_changes:
for k, v in pending_changes.items():
assert_or_errno(self.access(inode.value, os.W_OK, ctx,
or_own=True),
EPERM, 'setattr-file write')
if k == 'st_size':
inode.set_size(v)
else:
de.set_data(k, v)
inode.change_ctime()
return self._inode_attributes(inode)
def __str__(self):
"""create a unix-style long description of the file (like ls -l)"""
if self.st_mode is not None:
kind = stat.S_IFMT(self.st_mode)
if kind == stat.S_IFIFO:
ks = 'p'
elif kind == stat.S_IFCHR:
ks = 'c'
elif kind == stat.S_IFDIR:
ks = 'd'
elif kind == stat.S_IFBLK:
ks = 'b'
elif kind == stat.S_IFREG:
ks = '-'
elif kind == stat.S_IFLNK:
ks = 'l'
elif kind == stat.S_IFSOCK:
ks = 's'
else:
ks = '?'
ks += self._rwx(
(self.st_mode & o700) >> 6, self.st_mode & stat.S_ISUID)
ks += self._rwx(
(self.st_mode & o70) >> 3, self.st_mode & stat.S_ISGID)
ks += self._rwx(
self.st_mode & 7, self.st_mode & stat.S_ISVTX, True)
else:
ks = '?---------'
# compute display date
if (self.st_mtime is None) or (self.st_mtime == xffffffff):
# shouldn't really happen
datestr = '(unknown date)'
else:
if abs(time.time() - self.st_mtime) > 15552000:
# (15552000 = 6 months)
datestr = time.strftime(
'%d %b %Y', time.localtime(self.st_mtime))
else:
datestr = time.strftime(
'%d %b %H:%M', time.localtime(self.st_mtime))
filename = getattr(self, 'filename', '?')
# not all servers support uid/gid
uid = self.st_uid
gid = self.st_gid
size = self.st_size
if uid is None:
uid = 0
if gid is None:
gid = 0
if size is None:
size = 0
return '%s 1 %-8d %-8d %8d %-12s %s' % (
ks, uid, gid, size, datestr, filename)
def __str__(self):
"""create a unix-style long description of the file (like ls -l)"""
if self.st_mode is not None:
kind = stat.S_IFMT(self.st_mode)
if kind == stat.S_IFIFO:
ks = 'p'
elif kind == stat.S_IFCHR:
ks = 'c'
elif kind == stat.S_IFDIR:
ks = 'd'
elif kind == stat.S_IFBLK:
ks = 'b'
elif kind == stat.S_IFREG:
ks = '-'
elif kind == stat.S_IFLNK:
ks = 'l'
elif kind == stat.S_IFSOCK:
ks = 's'
else:
ks = '?'
ks += self._rwx(
(self.st_mode & o700) >> 6, self.st_mode & stat.S_ISUID)
ks += self._rwx(
(self.st_mode & o70) >> 3, self.st_mode & stat.S_ISGID)
ks += self._rwx(
self.st_mode & 7, self.st_mode & stat.S_ISVTX, True)
else:
ks = '?---------'
# compute display date
if (self.st_mtime is None) or (self.st_mtime == xffffffff):
# shouldn't really happen
datestr = '(unknown date)'
else:
if abs(time.time() - self.st_mtime) > 15552000:
# (15552000 = 6 months)
datestr = time.strftime(
'%d %b %Y', time.localtime(self.st_mtime))
else:
datestr = time.strftime(
'%d %b %H:%M', time.localtime(self.st_mtime))
filename = getattr(self, 'filename', '?')
# not all servers support uid/gid
uid = self.st_uid
gid = self.st_gid
size = self.st_size
if uid is None:
uid = 0
if gid is None:
gid = 0
if size is None:
size = 0
return '%s 1 %-8d %-8d %8d %-12s %s' % (
ks, uid, gid, size, datestr, filename)
def humanUnixAttributes(mode):
"""
Convert a Unix file attributes (or "file mode") to an unicode string.
Original source code:
http://cvs.savannah.gnu.org/viewcvs/coreutils/lib/filemode.c?root=coreutils
>>> humanUnixAttributes(0644)
u'-rw-r--r-- (644)'
>>> humanUnixAttributes(02755)
u'-rwxr-sr-x (2755)'
"""
def ftypelet(mode):
if stat.S_ISREG (mode) or not stat.S_IFMT(mode):
return '-'
if stat.S_ISBLK (mode): return 'b'
if stat.S_ISCHR (mode): return 'c'
if stat.S_ISDIR (mode): return 'd'
if stat.S_ISFIFO(mode): return 'p'
if stat.S_ISLNK (mode): return 'l'
if stat.S_ISSOCK(mode): return 's'
return '?'
chars = [ ftypelet(mode), 'r', 'w', 'x', 'r', 'w', 'x', 'r', 'w', 'x' ]
for i in xrange(1, 10):
if not mode & 1 << 9 - i:
chars[i] = '-'
if mode & stat.S_ISUID:
if chars[3] != 'x':
chars[3] = 'S'
else:
chars[3] = 's'
if mode & stat.S_ISGID:
if chars[6] != 'x':
chars[6] = 'S'
else:
chars[6] = 's'
if mode & stat.S_ISVTX:
if chars[9] != 'x':
chars[9] = 'T'
else:
chars[9] = 't'
return u"%s (%o)" % (''.join(chars), mode)
def __str__(self):
"""create a unix-style long description of the file (like ls -l)"""
if self.st_mode is not None:
kind = stat.S_IFMT(self.st_mode)
if kind == stat.S_IFIFO:
ks = 'p'
elif kind == stat.S_IFCHR:
ks = 'c'
elif kind == stat.S_IFDIR:
ks = 'd'
elif kind == stat.S_IFBLK:
ks = 'b'
elif kind == stat.S_IFREG:
ks = '-'
elif kind == stat.S_IFLNK:
ks = 'l'
elif kind == stat.S_IFSOCK:
ks = 's'
else:
ks = '?'
ks += self._rwx((self.st_mode & o700) >> 6, self.st_mode & stat.S_ISUID)
ks += self._rwx((self.st_mode & o70) >> 3, self.st_mode & stat.S_ISGID)
ks += self._rwx(self.st_mode & 7, self.st_mode & stat.S_ISVTX, True)
else:
ks = '?---------'
# compute display date
if (self.st_mtime is None) or (self.st_mtime == xffffffff):
# shouldn't really happen
datestr = '(unknown date)'
else:
if abs(time.time() - self.st_mtime) > 15552000:
# (15552000 = 6 months)
datestr = time.strftime('%d %b %Y', time.localtime(self.st_mtime))
else:
datestr = time.strftime('%d %b %H:%M', time.localtime(self.st_mtime))
filename = getattr(self, 'filename', '?')
# not all servers support uid/gid
uid = self.st_uid
gid = self.st_gid
size = self.st_size
if uid is None:
uid = 0
if gid is None:
gid = 0
if size is None:
size = 0
return '%s 1 %-8d %-8d %8d %-12s %s' % (ks, uid, gid, size, datestr, filename)
def __init__(self, dirname, factory=None, create=True, access=0o700,
uid=None, gid=None):
"""Like the parent but allows specification of permission, uid, and
gid if creating."""
# pylint: disable=W0233, W0231
mailbox.Mailbox.__init__(self, dirname, factory, create)
self._paths = {
'tmp': os.path.join(self._path, 'tmp'),
'new': os.path.join(self._path, 'new'),
'cur': os.path.join(self._path, 'cur'),
}
exists = os.path.exists(self._path)
is_mailbox = (os.path.exists(self._paths["tmp"]) and
os.path.exists(self._paths["new"]) and
os.path.exists(self._paths["cur"]))
if not is_mailbox:
if create:
mask = os.umask(0o000)
if not exists:
try:
os.mkdir(self._path, access)
except OSError as e:
# If another process has simultaneously created
# this mailbox, that's fine.
if e.errno != 17:
raise
os.chmod(self._path, stat.S_IRWXU | stat.S_IRWXG |
stat.S_IRWXG | stat.S_ISGID)
if uid and gid:
os.chown(self._path, uid, gid)
elif uid:
os.chown(self._path, uid, -1)
elif gid:
os.chown(self._path, -1, gid)
for path in self._paths.values():
if not os.path.exists(path):
try:
os.mkdir(path, access)
except OSError as e:
# If another process has simultaneously created
# this mailbox, that's fine.
if e.errno != 17:
raise
os.chmod(path, stat.S_IRWXU | stat.S_IRWXG | stat.S_IRWXG |
stat.S_ISGID)
if uid and gid:
os.chown(path, uid, gid)
elif uid:
os.chown(path, uid, -1)
elif gid:
os.chown(path, -1, gid)
os.umask(mask)
else:
raise mailbox.NoSuchMailboxError(self._path)
self._toc = {}
self._toc_mtimes = {'cur': 0, 'new': 0}
self._last_read = 0 # Records last time we read cur/new
self._skewfactor = 0.1 # Adjust if os/fs clocks are skewing
def __str__(self):
"""create a unix-style long description of the file (like ls -l)"""
if self.st_mode is not None:
kind = stat.S_IFMT(self.st_mode)
if kind == stat.S_IFIFO:
ks = 'p'
elif kind == stat.S_IFCHR:
ks = 'c'
elif kind == stat.S_IFDIR:
ks = 'd'
elif kind == stat.S_IFBLK:
ks = 'b'
elif kind == stat.S_IFREG:
ks = '-'
elif kind == stat.S_IFLNK:
ks = 'l'
elif kind == stat.S_IFSOCK:
ks = 's'
else:
ks = '?'
ks += self._rwx((self.st_mode & o700) >> 6, self.st_mode & stat.S_ISUID)
ks += self._rwx((self.st_mode & o70) >> 3, self.st_mode & stat.S_ISGID)
ks += self._rwx(self.st_mode & 7, self.st_mode & stat.S_ISVTX, True)
else:
ks = '?---------'
# compute display date
if (self.st_mtime is None) or (self.st_mtime == xffffffff):
# shouldn't really happen
datestr = '(unknown date)'
else:
if abs(time.time() - self.st_mtime) > 15552000:
# (15552000 = 6 months)
datestr = time.strftime('%d %b %Y', time.localtime(self.st_mtime))
else:
datestr = time.strftime('%d %b %H:%M', time.localtime(self.st_mtime))
filename = getattr(self, 'filename', '?')
# not all servers support uid/gid
uid = self.st_uid
gid = self.st_gid
size = self.st_size
if uid is None:
uid = 0
if gid is None:
gid = 0
if size is None:
size = 0
return '%s 1 %-8d %-8d %8d %-12s %s' % (ks, uid, gid, size, datestr, filename)
