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-rw-r--r--pkg/sentry/syscalls/linux/BUILD2
-rw-r--r--pkg/sentry/syscalls/linux/sys_stat.go18
-rw-r--r--pkg/sentry/syscalls/linux/sys_stat_amd64.go45
-rw-r--r--pkg/sentry/syscalls/linux/sys_stat_arm64.go45
-rw-r--r--pkg/sentry/syscalls/linux/vfs2/BUILD2
-rw-r--r--pkg/sentry/syscalls/linux/vfs2/stat.go23
-rw-r--r--pkg/sentry/syscalls/linux/vfs2/stat_amd64.go46
-rw-r--r--pkg/sentry/syscalls/linux/vfs2/stat_arm64.go46
8 files changed, 186 insertions, 41 deletions
diff --git a/pkg/sentry/syscalls/linux/BUILD b/pkg/sentry/syscalls/linux/BUILD
index c7883e68e..0d24fd3c4 100644
--- a/pkg/sentry/syscalls/linux/BUILD
+++ b/pkg/sentry/syscalls/linux/BUILD
@@ -42,6 +42,8 @@ go_library(
"sys_socket.go",
"sys_splice.go",
"sys_stat.go",
+ "sys_stat_amd64.go",
+ "sys_stat_arm64.go",
"sys_sync.go",
"sys_sysinfo.go",
"sys_syslog.go",
diff --git a/pkg/sentry/syscalls/linux/sys_stat.go b/pkg/sentry/syscalls/linux/sys_stat.go
index 701b27b4a..9bd2df104 100644
--- a/pkg/sentry/syscalls/linux/sys_stat.go
+++ b/pkg/sentry/syscalls/linux/sys_stat.go
@@ -25,24 +25,6 @@ import (
// LINT.IfChange
-func statFromAttrs(t *kernel.Task, sattr fs.StableAttr, uattr fs.UnstableAttr) linux.Stat {
- return linux.Stat{
- Dev: sattr.DeviceID,
- Ino: sattr.InodeID,
- Nlink: uattr.Links,
- Mode: sattr.Type.LinuxType() | uint32(uattr.Perms.LinuxMode()),
- UID: uint32(uattr.Owner.UID.In(t.UserNamespace()).OrOverflow()),
- GID: uint32(uattr.Owner.GID.In(t.UserNamespace()).OrOverflow()),
- Rdev: uint64(linux.MakeDeviceID(sattr.DeviceFileMajor, sattr.DeviceFileMinor)),
- Size: uattr.Size,
- Blksize: sattr.BlockSize,
- Blocks: uattr.Usage / 512,
- ATime: uattr.AccessTime.Timespec(),
- MTime: uattr.ModificationTime.Timespec(),
- CTime: uattr.StatusChangeTime.Timespec(),
- }
-}
-
// Stat implements linux syscall stat(2).
func Stat(t *kernel.Task, args arch.SyscallArguments) (uintptr, *kernel.SyscallControl, error) {
addr := args[0].Pointer()
diff --git a/pkg/sentry/syscalls/linux/sys_stat_amd64.go b/pkg/sentry/syscalls/linux/sys_stat_amd64.go
new file mode 100644
index 000000000..0a04a6113
--- /dev/null
+++ b/pkg/sentry/syscalls/linux/sys_stat_amd64.go
@@ -0,0 +1,45 @@
+// Copyright 2020 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.
+
+// +build amd64
+
+package linux
+
+import (
+ "gvisor.dev/gvisor/pkg/abi/linux"
+ "gvisor.dev/gvisor/pkg/sentry/fs"
+ "gvisor.dev/gvisor/pkg/sentry/kernel"
+)
+
+// LINT.IfChange
+
+func statFromAttrs(t *kernel.Task, sattr fs.StableAttr, uattr fs.UnstableAttr) linux.Stat {
+ return linux.Stat{
+ Dev: sattr.DeviceID,
+ Ino: sattr.InodeID,
+ Nlink: uattr.Links,
+ Mode: sattr.Type.LinuxType() | uint32(uattr.Perms.LinuxMode()),
+ UID: uint32(uattr.Owner.UID.In(t.UserNamespace()).OrOverflow()),
+ GID: uint32(uattr.Owner.GID.In(t.UserNamespace()).OrOverflow()),
+ Rdev: uint64(linux.MakeDeviceID(sattr.DeviceFileMajor, sattr.DeviceFileMinor)),
+ Size: uattr.Size,
+ Blksize: sattr.BlockSize,
+ Blocks: uattr.Usage / 512,
+ ATime: uattr.AccessTime.Timespec(),
+ MTime: uattr.ModificationTime.Timespec(),
+ CTime: uattr.StatusChangeTime.Timespec(),
+ }
+}
+
+// LINT.ThenChange(vfs2/stat_amd64.go)
diff --git a/pkg/sentry/syscalls/linux/sys_stat_arm64.go b/pkg/sentry/syscalls/linux/sys_stat_arm64.go
new file mode 100644
index 000000000..5a3b1bfad
--- /dev/null
+++ b/pkg/sentry/syscalls/linux/sys_stat_arm64.go
@@ -0,0 +1,45 @@
+// Copyright 2020 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.
+
+// +build arm64
+
+package linux
+
+import (
+ "gvisor.dev/gvisor/pkg/abi/linux"
+ "gvisor.dev/gvisor/pkg/sentry/fs"
+ "gvisor.dev/gvisor/pkg/sentry/kernel"
+)
+
+// LINT.IfChange
+
+func statFromAttrs(t *kernel.Task, sattr fs.StableAttr, uattr fs.UnstableAttr) linux.Stat {
+ return linux.Stat{
+ Dev: sattr.DeviceID,
+ Ino: sattr.InodeID,
+ Nlink: uint32(uattr.Links),
+ Mode: sattr.Type.LinuxType() | uint32(uattr.Perms.LinuxMode()),
+ UID: uint32(uattr.Owner.UID.In(t.UserNamespace()).OrOverflow()),
+ GID: uint32(uattr.Owner.GID.In(t.UserNamespace()).OrOverflow()),
+ Rdev: uint64(linux.MakeDeviceID(sattr.DeviceFileMajor, sattr.DeviceFileMinor)),
+ Size: uattr.Size,
+ Blksize: int32(sattr.BlockSize),
+ Blocks: uattr.Usage / 512,
+ ATime: uattr.AccessTime.Timespec(),
+ MTime: uattr.ModificationTime.Timespec(),
+ CTime: uattr.StatusChangeTime.Timespec(),
+ }
+}
+
+// LINT.ThenChange(vfs2/stat_arm64.go)
diff --git a/pkg/sentry/syscalls/linux/vfs2/BUILD b/pkg/sentry/syscalls/linux/vfs2/BUILD
index f51761e81..e7695e995 100644
--- a/pkg/sentry/syscalls/linux/vfs2/BUILD
+++ b/pkg/sentry/syscalls/linux/vfs2/BUILD
@@ -22,6 +22,8 @@ go_library(
"read_write.go",
"setstat.go",
"stat.go",
+ "stat_amd64.go",
+ "stat_arm64.go",
"sync.go",
"xattr.go",
],
diff --git a/pkg/sentry/syscalls/linux/vfs2/stat.go b/pkg/sentry/syscalls/linux/vfs2/stat.go
index dca8d7011..12c532310 100644
--- a/pkg/sentry/syscalls/linux/vfs2/stat.go
+++ b/pkg/sentry/syscalls/linux/vfs2/stat.go
@@ -113,29 +113,6 @@ func fstatat(t *kernel.Task, dirfd int32, pathAddr, statAddr usermem.Addr, flags
return stat.CopyOut(t, statAddr)
}
-// This takes both input and output as pointer arguments to avoid copying large
-// structs.
-func convertStatxToUserStat(t *kernel.Task, statx *linux.Statx, stat *linux.Stat) {
- // Linux just copies fields from struct kstat without regard to struct
- // kstat::result_mask (fs/stat.c:cp_new_stat()), so we do too.
- userns := t.UserNamespace()
- *stat = linux.Stat{
- Dev: uint64(linux.MakeDeviceID(uint16(statx.DevMajor), statx.DevMinor)),
- Ino: statx.Ino,
- Nlink: uint64(statx.Nlink),
- Mode: uint32(statx.Mode),
- UID: uint32(auth.KUID(statx.UID).In(userns).OrOverflow()),
- GID: uint32(auth.KGID(statx.GID).In(userns).OrOverflow()),
- Rdev: uint64(linux.MakeDeviceID(uint16(statx.RdevMajor), statx.RdevMinor)),
- Size: int64(statx.Size),
- Blksize: int64(statx.Blksize),
- Blocks: int64(statx.Blocks),
- ATime: timespecFromStatxTimestamp(statx.Atime),
- MTime: timespecFromStatxTimestamp(statx.Mtime),
- CTime: timespecFromStatxTimestamp(statx.Ctime),
- }
-}
-
func timespecFromStatxTimestamp(sxts linux.StatxTimestamp) linux.Timespec {
return linux.Timespec{
Sec: sxts.Sec,
diff --git a/pkg/sentry/syscalls/linux/vfs2/stat_amd64.go b/pkg/sentry/syscalls/linux/vfs2/stat_amd64.go
new file mode 100644
index 000000000..2da538fc6
--- /dev/null
+++ b/pkg/sentry/syscalls/linux/vfs2/stat_amd64.go
@@ -0,0 +1,46 @@
+// Copyright 2020 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.
+
+// +build amd64
+
+package vfs2
+
+import (
+ "gvisor.dev/gvisor/pkg/abi/linux"
+ "gvisor.dev/gvisor/pkg/sentry/kernel"
+ "gvisor.dev/gvisor/pkg/sentry/kernel/auth"
+)
+
+// This takes both input and output as pointer arguments to avoid copying large
+// structs.
+func convertStatxToUserStat(t *kernel.Task, statx *linux.Statx, stat *linux.Stat) {
+ // Linux just copies fields from struct kstat without regard to struct
+ // kstat::result_mask (fs/stat.c:cp_new_stat()), so we do too.
+ userns := t.UserNamespace()
+ *stat = linux.Stat{
+ Dev: uint64(linux.MakeDeviceID(uint16(statx.DevMajor), statx.DevMinor)),
+ Ino: statx.Ino,
+ Nlink: uint64(statx.Nlink),
+ Mode: uint32(statx.Mode),
+ UID: uint32(auth.KUID(statx.UID).In(userns).OrOverflow()),
+ GID: uint32(auth.KGID(statx.GID).In(userns).OrOverflow()),
+ Rdev: uint64(linux.MakeDeviceID(uint16(statx.RdevMajor), statx.RdevMinor)),
+ Size: int64(statx.Size),
+ Blksize: int64(statx.Blksize),
+ Blocks: int64(statx.Blocks),
+ ATime: timespecFromStatxTimestamp(statx.Atime),
+ MTime: timespecFromStatxTimestamp(statx.Mtime),
+ CTime: timespecFromStatxTimestamp(statx.Ctime),
+ }
+}
diff --git a/pkg/sentry/syscalls/linux/vfs2/stat_arm64.go b/pkg/sentry/syscalls/linux/vfs2/stat_arm64.go
new file mode 100644
index 000000000..88b9c7627
--- /dev/null
+++ b/pkg/sentry/syscalls/linux/vfs2/stat_arm64.go
@@ -0,0 +1,46 @@
+// Copyright 2020 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.
+
+// +build arm64
+
+package vfs2
+
+import (
+ "gvisor.dev/gvisor/pkg/abi/linux"
+ "gvisor.dev/gvisor/pkg/sentry/kernel"
+ "gvisor.dev/gvisor/pkg/sentry/kernel/auth"
+)
+
+// This takes both input and output as pointer arguments to avoid copying large
+// structs.
+func convertStatxToUserStat(t *kernel.Task, statx *linux.Statx, stat *linux.Stat) {
+ // Linux just copies fields from struct kstat without regard to struct
+ // kstat::result_mask (fs/stat.c:cp_new_stat()), so we do too.
+ userns := t.UserNamespace()
+ *stat = linux.Stat{
+ Dev: uint64(linux.MakeDeviceID(uint16(statx.DevMajor), statx.DevMinor)),
+ Ino: statx.Ino,
+ Nlink: uint32(statx.Nlink),
+ Mode: uint32(statx.Mode),
+ UID: uint32(auth.KUID(statx.UID).In(userns).OrOverflow()),
+ GID: uint32(auth.KGID(statx.GID).In(userns).OrOverflow()),
+ Rdev: uint64(linux.MakeDeviceID(uint16(statx.RdevMajor), statx.RdevMinor)),
+ Size: int64(statx.Size),
+ Blksize: int32(statx.Blksize),
+ Blocks: int64(statx.Blocks),
+ ATime: timespecFromStatxTimestamp(statx.Atime),
+ MTime: timespecFromStatxTimestamp(statx.Mtime),
+ CTime: timespecFromStatxTimestamp(statx.Ctime),
+ }
+}
generated by cgit v1.2.3 (git 2.39.1) at 2024-11-30 10:43:20 +0000