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authorKevin Krakauer <krakauer@google.com>2020-01-21 13:16:25 -0800
committerKevin Krakauer <krakauer@google.com>2020-01-21 13:16:25 -0800
commit62357a0afb5f4128a11dc9a1dfadd2957ec39e2d (patch)
tree2f93dc1bb5680434f3bcd69df60d45af89777a94 /pkg/sentry/fsimpl/proc/version.go
parentbd292894097ffdf316bc78d81aebd0a2988124f3 (diff)
parent2ba6198851dc1e293295d7cadf8c0ae456b68beb (diff)
Merge branch 'master' into iptables-write-filter-proto
Diffstat (limited to 'pkg/sentry/fsimpl/proc/version.go')
-rw-r--r--pkg/sentry/fsimpl/proc/version.go70
1 files changed, 0 insertions, 70 deletions
diff --git a/pkg/sentry/fsimpl/proc/version.go b/pkg/sentry/fsimpl/proc/version.go
deleted file mode 100644
index 367f2396b..000000000
--- a/pkg/sentry/fsimpl/proc/version.go
+++ /dev/null
@@ -1,70 +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 proc
-
-import (
- "bytes"
- "fmt"
-
- "gvisor.dev/gvisor/pkg/sentry/context"
- "gvisor.dev/gvisor/pkg/sentry/fsimpl/kernfs"
- "gvisor.dev/gvisor/pkg/sentry/kernel"
-)
-
-// versionData implements vfs.DynamicBytesSource for /proc/version.
-//
-// +stateify savable
-type versionData struct {
- kernfs.DynamicBytesFile
-
- // k is the owning Kernel.
- k *kernel.Kernel
-}
-
-var _ dynamicInode = (*versionData)(nil)
-
-// Generate implements vfs.DynamicBytesSource.Generate.
-func (v *versionData) Generate(ctx context.Context, buf *bytes.Buffer) error {
- init := v.k.GlobalInit()
- if init == nil {
- // Attempted to read before the init Task is created. This can
- // only occur during startup, which should never need to read
- // this file.
- panic("Attempted to read version before initial Task is available")
- }
-
- // /proc/version takes the form:
- //
- // "SYSNAME version RELEASE (COMPILE_USER@COMPILE_HOST)
- // (COMPILER_VERSION) VERSION"
- //
- // where:
- // - SYSNAME, RELEASE, and VERSION are the same as returned by
- // sys_utsname
- // - COMPILE_USER is the user that build the kernel
- // - COMPILE_HOST is the hostname of the machine on which the kernel
- // was built
- // - COMPILER_VERSION is the version reported by the building compiler
- //
- // Since we don't really want to expose build information to
- // applications, those fields are omitted.
- //
- // FIXME(mpratt): Using Version from the init task SyscallTable
- // disregards the different version a task may have (e.g., in a uts
- // namespace).
- ver := init.Leader().SyscallTable().Version
- fmt.Fprintf(buf, "%s version %s %s\n", ver.Sysname, ver.Release, ver.Version)
- return nil
-}