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app: remount root readonly

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This does nothing for security, but should help avoid hiding bugs of programs developed in a hakurei container.

Signed-off-by: Ophestra <cat@gensokyo.uk>
This commit is contained in:
Ophestra
2025-08-01 23:54:33 +09:00
parent c5d24979f5
commit 3b8a3d3b00
9 changed files with 18 additions and 9 deletions
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7
internal/app/app_pd_linux_test.go
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@@ -2,6 +2,7 @@ package app_test
import (
"os"
"syscall"
"hakurei.app/container"
"hakurei.app/container/seccomp"
@@ -56,7 +57,8 @@ var testCasesPd = []sealTestCase{
Bind("/tmp/hakurei.1971/tmpdir/0", "/tmp", container.BindWritable).
Bind("/home/chronos", "/home/chronos", container.BindWritable).
Place("/etc/passwd", []byte("chronos:x:65534:65534:Hakurei:/home/chronos:/run/current-system/sw/bin/zsh\n")).
Place("/etc/group", []byte("hakurei:x:65534:\n")),
Place("/etc/group", []byte("hakurei:x:65534:\n")).
Remount("/", syscall.MS_RDONLY),
SeccompPresets: seccomp.PresetExt | seccomp.PresetDenyDevel,
HostNet: true,
RetainSession: true,
@@ -195,7 +197,8 @@ var testCasesPd = []sealTestCase{
Bind("/run/user/1971/hakurei/ebf083d1b175911782d413369b64ce7c/pulse", "/run/user/65534/pulse/native", 0).
Place(hst.Tmp+"/pulse-cookie", nil).
Bind("/tmp/hakurei.1971/ebf083d1b175911782d413369b64ce7c/bus", "/run/user/65534/bus", 0).
Bind("/tmp/hakurei.1971/ebf083d1b175911782d413369b64ce7c/system_bus_socket", "/run/dbus/system_bus_socket", 0),
Bind("/tmp/hakurei.1971/ebf083d1b175911782d413369b64ce7c/system_bus_socket", "/run/dbus/system_bus_socket", 0).
Remount("/", syscall.MS_RDONLY),
SeccompPresets: seccomp.PresetExt | seccomp.PresetDenyDevel,
HostNet: true,
RetainSession: true,