我们从Python开源项目中，提取了以下50个代码示例，用于说明如何使用os.fchown()。
def _test_all_chown_common(self, chown_func, first_param): """Common code for chown, fchown and lchown tests.""" if os.getuid() == 0: try: # Many linux distros have a nfsnobody user as MAX_UID-2 # that makes a good test case for signedness issues. # http://bugs.python.org/issue1747858 # This part of the test only runs when run as root. # Only scary people run their tests as root. ent = pwd.getpwnam('nfsnobody') chown_func(first_param, ent.pw_uid, ent.pw_gid) except KeyError: pass else: # non-root cannot chown to root, raises OSError self.assertRaises(OSError, chown_func, first_param, 0, 0) # test a successful chown call chown_func(first_param, os.getuid(), os.getgid())
def write_file(path, content, owner='root', group='root', perms=0o444): """Create or overwrite a file with the contents of a byte string.""" uid = pwd.getpwnam(owner).pw_uid gid = grp.getgrnam(group).gr_gid # lets see if we can grab the file and compare the context, to avoid doing # a write. existing_content = None existing_uid, existing_gid = None, None try: with open(path, 'rb') as target: existing_content = target.read() stat = os.stat(path) existing_uid, existing_gid = stat.st_uid, stat.st_gid except: pass if content != existing_content: log("Writing file {} {}:{} {:o}".format(path, owner, group, perms), level=DEBUG) with open(path, 'wb') as target: os.fchown(target.fileno(), uid, gid) os.fchmod(target.fileno(), perms) target.write(content) return # the contents were the same, but we might still need to change the # ownership. if existing_uid != uid: log("Changing uid on already existing content: {} -> {}" .format(existing_uid, uid), level=DEBUG) os.chown(path, uid, -1) if existing_gid != gid: log("Changing gid on already existing content: {} -> {}" .format(existing_gid, gid), level=DEBUG) os.chown(path, -1, gid)
def writefile(path, data, owner=None, group=None, mode=None): if isinstance(data, bytes): openmode = 'wb' else: openmode = 'w' if owner is not None: uid = pwd.getpwnam(owner).pw_uid else: uid = -1 if group is not None: gid = grp.getgrnam(group).gr_gid else: gid = -1 with open(path, openmode) as f: os.fchown( f.fileno(), uid, gid ) if mode is not None: os.fchmod(f.fileno(), mode) return f.write(data)
def write(self, path=None): """Writes the ticket to /var/spool/ticket/<princ>.""" def _write_temp(tkt_file): # Write the file tkt_file.write(self.ticket) # Set the owner if self.uid is not None: os.fchown(tkt_file.fileno(), self.uid, -1) # TODO: Should we enforce the mode too? tkt_file.flush() if path is None: path = self.tkt_path try: fs.write_safe( path, _write_temp, prefix='.tmp' + self.princ ) except (IOError, OSError): _LOGGER.exception('Error writing ticket file: %s', path)
def write_file(path, content, owner='root', group='root', perms=0o444): """Create or overwrite a file with the contents of a byte string.""" log("Writing file {} {}:{} {:o}".format(path, owner, group, perms)) uid = pwd.getpwnam(owner).pw_uid gid = grp.getgrnam(group).gr_gid with open(path, 'wb') as target: os.fchown(target.fileno(), uid, gid) os.fchmod(target.fileno(), perms) target.write(content)
def write_file(path, content, owner='root', group='root', perms=0o444): """Create or overwrite a file with the contents of a byte string.""" uid = pwd.getpwnam(owner).pw_uid gid = grp.getgrnam(group).gr_gid # lets see if we can grab the file and compare the context, to avoid doing # a write. existing_content = None existing_uid, existing_gid = None, None try: with open(path, 'rb') as target: existing_content = target.read() stat = os.stat(path) existing_uid, existing_gid = stat.st_uid, stat.st_gid except: pass if content != existing_content: log("Writing file {} {}:{} {:o}".format(path, owner, group, perms), level=DEBUG) with open(path, 'wb') as target: os.fchown(target.fileno(), uid, gid) os.fchmod(target.fileno(), perms) if six.PY3 and isinstance(content, six.string_types): content = content.encode('UTF-8') target.write(content) return # the contents were the same, but we might still need to change the # ownership. if existing_uid != uid: log("Changing uid on already existing content: {} -> {}" .format(existing_uid, uid), level=DEBUG) os.chown(path, uid, -1) if existing_gid != gid: log("Changing gid on already existing content: {} -> {}" .format(existing_gid, gid), level=DEBUG) os.chown(path, -1, gid)
def restore(cls, zip_archive, **kwargs): fd, path = tempfile.mkstemp() try: uid = pwd.getpwnam("postgres").pw_uid os.fchown(fd, uid, -1) with os.fdopen(fd, 'w') as tmp: shutil.copyfileobj(zip_archive.open('postgresql.backup'), tmp) tmp.seek(0) pg_restore(path) finally: os.remove(path) return path
def test_fchown(self): if hasattr(os, "fchown"): self.check(os.fchown, -1, -1)
def test_fchown(self): os.unlink(support.TESTFN) # re-create the file test_file = open(support.TESTFN, 'w') try: fd = test_file.fileno() self._test_all_chown_common(posix.fchown, fd) finally: test_file.close()
def file_rights(filepath, mode=None, uid=None, gid=None): ''' Change file rights ''' file_handle = os.open(filepath, os.O_RDONLY) if mode: os.fchmod(file_handle, mode) if uid: if not gid: gid = 0 os.fchown(file_handle, uid, gid) os.close(file_handle)
def test_fchown(self): self.check(os.fchown, -1, -1)
def test_fchown(self): os.unlink(test_support.TESTFN) # re-create the file test_file = open(test_support.TESTFN, 'w') try: fd = test_file.fileno() self._test_all_chown_common(posix.fchown, fd, getattr(posix, 'fstat', None)) finally: test_file.close()
