python类fchown()的实例源码

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 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 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 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 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 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 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 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 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 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 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 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 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 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 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()

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()