1 files changed, 84 insertions, 0 deletions
diff --git a/pkg/abi/linux/fs.go b/pkg/abi/linux/fs.go
new file mode 100644
index 000000000..c82ab9b5b
--- /dev/null
+++ b/pkg/abi/linux/fs.go
@@ -0,0 +1,84 @@
+// Copyright 2018 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
+
+// Filesystem types used in statfs(2).
+//
+// See linux/magic.h.
+const (
+	ANON_INODE_FS_MAGIC   = 0x09041934
+	DEVPTS_SUPER_MAGIC    = 0x00001cd1
+	OVERLAYFS_SUPER_MAGIC = 0x794c7630
+	PIPEFS_MAGIC          = 0x50495045
+	PROC_SUPER_MAGIC      = 0x9fa0
+	RAMFS_MAGIC           = 0x09041934
+	SOCKFS_MAGIC          = 0x534F434B
+	SYSFS_MAGIC           = 0x62656572
+	TMPFS_MAGIC           = 0x01021994
+	V9FS_MAGIC            = 0x01021997
+)
+
+// Filesystem path limits, from uapi/linux/limits.h.
+const (
+	NAME_MAX = 255
+	PATH_MAX = 4096
+)
+
+// Statfs is struct statfs, from uapi/asm-generic/statfs.h.
+type Statfs struct {
+	// Type is one of the filesystem magic values, defined above.
+	Type uint64
+
+	// BlockSize is the data block size.
+	BlockSize int64
+
+	// Blocks is the number of data blocks in use.
+	Blocks uint64
+
+	// BlocksFree is the number of free blocks.
+	BlocksFree uint64
+
+	// BlocksAvailable is the number of blocks free for use by
+	// unprivileged users.
+	BlocksAvailable uint64
+
+	// Files is the number of used file nodes on the filesystem.
+	Files uint64
+
+	// FileFress is the number of free file nodes on the filesystem.
+	FilesFree uint64
+
+	// FSID is the filesystem ID.
+	FSID [2]int32
+
+	// NameLength is the maximum file name length.
+	NameLength uint64
+
+	// FragmentSize is equivalent to BlockSize.
+	FragmentSize int64
+
+	// Flags is the set of filesystem mount flags.
+	Flags uint64
+
+	// Spare is unused.
+	Spare [4]uint64
+}
+
+// Sync_file_range flags, from include/uapi/linux/fs.h
+const (
+	SYNC_FILE_RANGE_WAIT_BEFORE = 1
+	SYNC_FILE_RANGE_WRITE       = 2
+	SYNC_FILE_RANGE_WAIT_AFTER  = 4
+)