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Diffstat (limited to 'pkg/sentry/fsimpl/ext/file_description.go')
-rw-r--r-- | pkg/sentry/fsimpl/ext/file_description.go | 86 |
1 files changed, 0 insertions, 86 deletions
diff --git a/pkg/sentry/fsimpl/ext/file_description.go b/pkg/sentry/fsimpl/ext/file_description.go deleted file mode 100644 index a0065343b..000000000 --- a/pkg/sentry/fsimpl/ext/file_description.go +++ /dev/null @@ -1,86 +0,0 @@ -// 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 ext - -import ( - "gvisor.dev/gvisor/pkg/abi/linux" - "gvisor.dev/gvisor/pkg/sentry/context" - "gvisor.dev/gvisor/pkg/sentry/vfs" - "gvisor.dev/gvisor/pkg/syserror" -) - -// fileDescription is embedded by ext implementations of -// vfs.FileDescriptionImpl. -type fileDescription struct { - vfsfd vfs.FileDescription - vfs.FileDescriptionDefaultImpl - - // flags is the same as vfs.OpenOptions.Flags which are passed to - // vfs.FilesystemImpl.OpenAt. - // TODO(b/134676337): syscalls like read(2), write(2), fchmod(2), fchown(2), - // fgetxattr(2), ioctl(2), mmap(2) should fail with EBADF if O_PATH is set. - // Only close(2), fstat(2), fstatfs(2) should work. - flags uint32 -} - -func (fd *fileDescription) filesystem() *filesystem { - return fd.vfsfd.VirtualDentry().Mount().Filesystem().Impl().(*filesystem) -} - -func (fd *fileDescription) inode() *inode { - return fd.vfsfd.VirtualDentry().Dentry().Impl().(*dentry).inode -} - -// OnClose implements vfs.FileDescriptionImpl.OnClose. -func (fd *fileDescription) OnClose() error { return nil } - -// StatusFlags implements vfs.FileDescriptionImpl.StatusFlags. -func (fd *fileDescription) StatusFlags(ctx context.Context) (uint32, error) { - return fd.flags, nil -} - -// SetStatusFlags implements vfs.FileDescriptionImpl.SetStatusFlags. -func (fd *fileDescription) SetStatusFlags(ctx context.Context, flags uint32) error { - // None of the flags settable by fcntl(F_SETFL) are supported, so this is a - // no-op. - return nil -} - -// Stat implements vfs.FileDescriptionImpl.Stat. -func (fd *fileDescription) Stat(ctx context.Context, opts vfs.StatOptions) (linux.Statx, error) { - var stat linux.Statx - fd.inode().statTo(&stat) - return stat, nil -} - -// SetStat implements vfs.FileDescriptionImpl.SetStat. -func (fd *fileDescription) SetStat(ctx context.Context, opts vfs.SetStatOptions) error { - if opts.Stat.Mask == 0 { - return nil - } - return syserror.EPERM -} - -// SetStat implements vfs.FileDescriptionImpl.StatFS. -func (fd *fileDescription) StatFS(ctx context.Context) (linux.Statfs, error) { - var stat linux.Statfs - fd.filesystem().statTo(&stat) - return stat, nil -} - -// Sync implements vfs.FileDescriptionImpl.Sync. -func (fd *fileDescription) Sync(ctx context.Context) error { - return nil -} |