From 3a42638a0b32ceede66d8d593609b424bbdba47e Mon Sep 17 00:00:00 2001
From: Dean Deng <deandeng@google.com>
Date: Wed, 18 Mar 2020 19:08:46 -0700
Subject: Port imported TTY fds to vfs2.

Refactor fs/host.TTYFileOperations so that the relevant functionality can be
shared with VFS2 (fsimpl/host.ttyFD).

Incorporate host.defaultFileFD into the default host.fileDescription. This way,
there is no need for a separate default_file.go. As in vfs1, the TTY file
implementation can be built on top of this default and override operations as
necessary (PRead/Read/PWrite/Write, Release, Ioctl).

Note that these changes still need to be plumbed into runsc, which refers to
imported TTYs in control/proc.go:ExecAsync.

Updates #1672.

PiperOrigin-RevId: 301718157
---
 pkg/sentry/fsimpl/host/BUILD | 6 +++++-
 1 file changed, 5 insertions(+), 1 deletion(-)

(limited to 'pkg/sentry/fsimpl/host/BUILD')

diff --git a/pkg/sentry/fsimpl/host/BUILD b/pkg/sentry/fsimpl/host/BUILD
index 5d67f88e3..0bb4a5c3e 100644
--- a/pkg/sentry/fsimpl/host/BUILD
+++ b/pkg/sentry/fsimpl/host/BUILD
@@ -5,8 +5,9 @@ licenses(["notice"])
 go_library(
     name = "host",
     srcs = [
-        "default_file.go",
         "host.go",
+        "ioctl_unsafe.go",
+        "tty.go",
         "util.go",
     ],
     visibility = ["//pkg/sentry:internal"],
@@ -17,9 +18,12 @@ go_library(
         "//pkg/log",
         "//pkg/refs",
         "//pkg/safemem",
+        "//pkg/sentry/arch",
         "//pkg/sentry/fsimpl/kernfs",
+        "//pkg/sentry/kernel",
         "//pkg/sentry/kernel/auth",
         "//pkg/sentry/memmap",
+        "//pkg/sentry/unimpl",
         "//pkg/sentry/vfs",
         "//pkg/sync",
         "//pkg/syserror",
-- 
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