我们从Python开源项目中，提取了以下19个代码示例，用于说明如何使用stat.S_ISUID。
def is_setuid_root(path): """Return True if the file is owned by root and has the setuid bit set.""" # Can't be setuid root if it's not there. if not os.path.isfile(path): return False pstat = os.stat(path) # Owned by root? if pstat.st_uid != 0: return False # Setuid bit set? if pstat.st_mode & stat.S_ISUID == 0: return False # Yay, passed all test! return True
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
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 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 __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 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)
