diff options
| author | Dean Deng <deandeng@google.com> | 2019-12-16 13:18:36 -0800 |
|---|---|---|
| committer | gVisor bot <gvisor-bot@google.com> | 2019-12-16 13:20:07 -0800 |
| commit | e6f4124afd951c3b089f9c75c499c14f4d90a590 (patch) | |
| tree | 6d6d91b04330bc4f2539b5b018da795db20b4aea /pkg/abi | |
| parent | 6b424530397e5100b08628efe8f6c62178daa70b (diff) | |
Implement checks for get/setxattr at the syscall layer.
Add checks for input arguments, file type, permissions, etc. that match
the Linux implementation. A call to get/setxattr that passes all the
checks will still currently return EOPNOTSUPP. Actual support will be
added in following commits.
Only allow user.* extended attributes for the time being.
PiperOrigin-RevId: 285835159
Diffstat (limited to 'pkg/abi')
| -rw-r--r-- | pkg/abi/linux/BUILD | 1 | ||||
| -rw-r--r-- | pkg/abi/linux/xattr.go | 27 |
2 files changed, 28 insertions, 0 deletions
diff --git a/pkg/abi/linux/BUILD b/pkg/abi/linux/BUILD index 51774c6b6..9553f164d 100644 --- a/pkg/abi/linux/BUILD +++ b/pkg/abi/linux/BUILD @@ -57,6 +57,7 @@ go_library( "uio.go", "utsname.go", "wait.go", + "xattr.go", ], importpath = "gvisor.dev/gvisor/pkg/abi/linux", visibility = ["//visibility:public"], diff --git a/pkg/abi/linux/xattr.go b/pkg/abi/linux/xattr.go new file mode 100644 index 000000000..a3b6406fa --- /dev/null +++ b/pkg/abi/linux/xattr.go @@ -0,0 +1,27 @@ +// Copyright 2019 The gVisor Authors. +// +// Licensed under the Apache License, Version 2.0 (the "License"); +// you may not use this file except in compliance with the License. +// You may obtain a copy of the License at +// +// http://www.apache.org/licenses/LICENSE-2.0 +// +// Unless required by applicable law or agreed to in writing, software +// distributed under the License is distributed on an "AS IS" BASIS, +// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. +// See the License for the specific language governing permissions and +// limitations under the License. + +package linux + +// Constants for extended attributes. +const ( + XATTR_NAME_MAX = 255 + XATTR_SIZE_MAX = 65536 + + XATTR_CREATE = 1 + XATTR_REPLACE = 2 + + XATTR_USER_PREFIX = "user." + XATTR_USER_PREFIX_LEN = len(XATTR_USER_PREFIX) +) |