9 files changed, 64 insertions, 29 deletions
diff --git a/pkg/abi/BUILD b/pkg/abi/BUILD
index f5c08ea06..839f822eb 100644
--- a/pkg/abi/BUILD
+++ b/pkg/abi/BUILD
@@ -1,4 +1,4 @@
-load("//tools/go_stateify:defs.bzl", "go_library")
+load("//tools:defs.bzl", "go_library")
 
 package(licenses = ["notice"])
 
@@ -9,6 +9,5 @@ go_library(
         "abi_linux.go",
         "flag.go",
     ],
-    importpath = "gvisor.dev/gvisor/pkg/abi",
     visibility = ["//:sandbox"],
 )
diff --git a/pkg/abi/abi.go b/pkg/abi/abi.go
index d56c481c9..e6be93c3a 100644
--- a/pkg/abi/abi.go
+++ b/pkg/abi/abi.go
@@ -39,3 +39,7 @@ func (o OS) String() string {
 		return fmt.Sprintf("OS(%d)", o)
 	}
 }
+
+// ABI is an interface that defines OS-specific interactions.
+type ABI interface {
+}
diff --git a/pkg/abi/linux/BUILD b/pkg/abi/linux/BUILD
index 716ff22d2..1f3c0c687 100644
--- a/pkg/abi/linux/BUILD
+++ b/pkg/abi/linux/BUILD
@@ -1,5 +1,4 @@
-load("@io_bazel_rules_go//go:def.bzl", "go_test")
-load("//tools/go_stateify:defs.bzl", "go_library")
+load("//tools:defs.bzl", "go_library", "go_test")
 
 # Package linux contains the constants and types needed to interface with a
 # Linux kernel. It should be used instead of syscall or golang.org/x/sys/unix
@@ -60,7 +59,6 @@ go_library(
         "wait.go",
         "xattr.go",
     ],
-    importpath = "gvisor.dev/gvisor/pkg/abi/linux",
     visibility = ["//visibility:public"],
     deps = [
         "//pkg/abi",
@@ -73,7 +71,7 @@ go_test(
     name = "linux_test",
     size = "small",
     srcs = ["netfilter_test.go"],
-    embed = [":linux"],
+    library = ":linux",
     deps = [
         "//pkg/binary",
     ],
diff --git a/pkg/abi/linux/dev.go b/pkg/abi/linux/dev.go
index 421e11256..89f9a793f 100644
--- a/pkg/abi/linux/dev.go
+++ b/pkg/abi/linux/dev.go
@@ -36,6 +36,9 @@ func DecodeDeviceID(rdev uint32) (uint16, uint32) {
 //
 // See Documentations/devices.txt and uapi/linux/major.h.
 const (
+	// MEM_MAJOR is the major device number for "memory" character devices.
+	MEM_MAJOR = 1
+
 	// TTYAUX_MAJOR is the major device number for alternate TTY devices.
 	TTYAUX_MAJOR = 5
 
diff --git a/pkg/abi/linux/epoll.go b/pkg/abi/linux/epoll.go
index 72083b604..0e881aa3c 100644
--- a/pkg/abi/linux/epoll.go
+++ b/pkg/abi/linux/epoll.go
@@ -38,8 +38,14 @@ const (
 
 // Per-file descriptor flags.
 const (
-	EPOLLET      = 0x80000000
-	EPOLLONESHOT = 0x40000000
+	EPOLLEXCLUSIVE = 1 << 28
+	EPOLLWAKEUP    = 1 << 29
+	EPOLLONESHOT   = 1 << 30
+	EPOLLET        = 1 << 31
+
+	// EP_PRIVATE_BITS is fs/eventpoll.c:EP_PRIVATE_BITS, the set of all bits
+	// in an epoll event mask that correspond to flags rather than I/O events.
+	EP_PRIVATE_BITS = EPOLLEXCLUSIVE | EPOLLWAKEUP | EPOLLONESHOT | EPOLLET
 )
 
 // Operation flags.
diff --git a/pkg/abi/linux/file.go b/pkg/abi/linux/file.go
index 6fbdd668d..c3ab15a4f 100644
--- a/pkg/abi/linux/file.go
+++ b/pkg/abi/linux/file.go
@@ -24,27 +24,23 @@ import (
 
 // Constants for open(2).
 const (
-	O_ACCMODE   = 000000003
-	O_RDONLY    = 000000000
-	O_WRONLY    = 000000001
-	O_RDWR      = 000000002
-	O_CREAT     = 000000100
-	O_EXCL      = 000000200
-	O_NOCTTY    = 000000400
-	O_TRUNC     = 000001000
-	O_APPEND    = 000002000
-	O_NONBLOCK  = 000004000
-	O_DSYNC     = 000010000
-	O_ASYNC     = 000020000
-	O_DIRECT    = 000040000
-	O_LARGEFILE = 000100000
-	O_DIRECTORY = 000200000
-	O_NOFOLLOW  = 000400000
-	O_NOATIME   = 001000000
-	O_CLOEXEC   = 002000000
-	O_SYNC      = 004000000 // __O_SYNC in Linux
-	O_PATH      = 010000000
-	O_TMPFILE   = 020000000 // __O_TMPFILE in Linux
+	O_ACCMODE  = 000000003
+	O_RDONLY   = 000000000
+	O_WRONLY   = 000000001
+	O_RDWR     = 000000002
+	O_CREAT    = 000000100
+	O_EXCL     = 000000200
+	O_NOCTTY   = 000000400
+	O_TRUNC    = 000001000
+	O_APPEND   = 000002000
+	O_NONBLOCK = 000004000
+	O_DSYNC    = 000010000
+	O_ASYNC    = 000020000
+	O_NOATIME  = 001000000
+	O_CLOEXEC  = 002000000
+	O_SYNC     = 004000000 // __O_SYNC in Linux
+	O_PATH     = 010000000
+	O_TMPFILE  = 020000000 // __O_TMPFILE in Linux
 )
 
 // Constants for fstatat(2).
diff --git a/pkg/abi/linux/file_amd64.go b/pkg/abi/linux/file_amd64.go
index 74c554be6..9d307e840 100644
--- a/pkg/abi/linux/file_amd64.go
+++ b/pkg/abi/linux/file_amd64.go
@@ -14,6 +14,14 @@
 
 package linux
 
+// Constants for open(2).
+const (
+	O_DIRECT    = 000040000
+	O_LARGEFILE = 000100000
+	O_DIRECTORY = 000200000
+	O_NOFOLLOW  = 000400000
+)
+
 // Stat represents struct stat.
 type Stat struct {
 	Dev     uint64
diff --git a/pkg/abi/linux/file_arm64.go b/pkg/abi/linux/file_arm64.go
index f16c07589..26a54f416 100644
--- a/pkg/abi/linux/file_arm64.go
+++ b/pkg/abi/linux/file_arm64.go
@@ -14,6 +14,14 @@
 
 package linux
 
+// Constants for open(2).
+const (
+	O_DIRECTORY = 000040000
+	O_NOFOLLOW  = 000100000
+	O_DIRECT    = 000200000
+	O_LARGEFILE = 000400000
+)
+
 // Stat represents struct stat.
 type Stat struct {
 	Dev     uint64
diff --git a/pkg/abi/linux/netlink_route.go b/pkg/abi/linux/netlink_route.go
index 0e3582ab6..40bec566c 100644
--- a/pkg/abi/linux/netlink_route.go
+++ b/pkg/abi/linux/netlink_route.go
@@ -205,6 +205,9 @@ type RouteMessage struct {
 	Flags uint32
 }
 
+// SizeOfRouteMessage is the size of RouteMessage.
+const SizeOfRouteMessage = 12
+
 // Route types, from uapi/linux/rtnetlink.h.
 const (
 	// RTN_UNSPEC represents an unspecified route type.
@@ -331,3 +334,13 @@ const (
 	RTF_GATEWAY = 0x2
 	RTF_UP      = 0x1
 )
+
+// RtAttr is the header of optional addition route information, as a netlink
+// attribute. From include/uapi/linux/rtnetlink.h.
+type RtAttr struct {
+	Len  uint16
+	Type uint16
+}
+
+// SizeOfRtAttr is the size of RtAttr.
+const SizeOfRtAttr = 4