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container/initdev: mount tmpfs on shm for ro dev
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Programs expect /dev/shm to be a writable tmpfs.

Signed-off-by: Ophestra <cat@gensokyo.uk>
This commit is contained in:
Ophestra
2025-08-26 03:15:32 +09:00
parent 07194c74cb
commit 9bc8532d56
12 changed files with 30 additions and 9 deletions
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2
container/initdev_test.go
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@@ -645,6 +645,7 @@ func TestMountDevOp(t *testing.T) {
{"readlink", expectArgs{"/host/proc/self/fd/1"}, "/dev/pts/2", nil},
{"bindMount", expectArgs{"/host/dev/pts/2", "/sysroot/dev/console", uintptr(0), false}, nil, nil},
{"remount", expectArgs{"/sysroot/dev", uintptr(1)}, nil, nil},
{"mountTmpfs", expectArgs{"tmpfs", "/sysroot/dev/shm", uintptr(0x6), 0, os.FileMode(01777)}, nil, nil},
}, nil},
{"success rw", &Params{ParentPerm: 0750, RetainSession: true}, &MountDevOp{
@@ -715,6 +716,7 @@ func TestMountDevOp(t *testing.T) {
{"mkdir", expectArgs{"/sysroot/dev/mqueue", os.FileMode(0750)}, nil, nil},
{"mount", expectArgs{"mqueue", "/sysroot/dev/mqueue", "mqueue", uintptr(0xe), ""}, nil, nil},
{"remount", expectArgs{"/sysroot/dev", uintptr(1)}, nil, nil},
{"mountTmpfs", expectArgs{"tmpfs", "/sysroot/dev/shm", uintptr(0x6), 0, os.FileMode(01777)}, nil, nil},
}, nil},
})