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ssh/tailssh: add Plan 9 support for Tailscale SSH

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Updates #5794

Change-Id: I7b05cd29ec02085cb503bbcd0beb61bf455002ac
Signed-off-by: Brad Fitzpatrick <bradfitz@tailscale.com>
This commit is contained in:
Brad Fitzpatrick
2025-04-01 04:01:00 -07:00
committed by Brad Fitzpatrick
parent 6f75647c0e
commit b3953ce0c4
12 changed files with 476 additions and 16 deletions
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4
ssh/tailssh/tailssh.go
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@@ -1,7 +1,7 @@
// Copyright (c) Tailscale Inc & AUTHORS
// SPDX-License-Identifier: BSD-3-Clause
//go:build linux || (darwin && !ios) || freebsd || openbsd
//go:build linux || (darwin && !ios) || freebsd || openbsd || plan9
// Package tailssh is an SSH server integrated into Tailscale.
package tailssh
@@ -903,7 +903,7 @@ func (ss *sshSession) run() {
defer t.Stop()
}
if euid := os.Geteuid(); euid != 0 {
if euid := os.Geteuid(); euid != 0 && runtime.GOOS != "plan9" {
if lu.Uid != fmt.Sprint(euid) {
ss.logf("can't switch to user %q from process euid %v", lu.Username, euid)
fmt.Fprintf(ss, "can't switch user\r\n")