Ophestra
2e0a4795f6
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This is used for ensuring persistent data directories specific to the container. Signed-off-by: Ophestra <cat@gensokyo.uk>
236 lines
7.9 KiB
Go
236 lines
7.9 KiB
Go
package container
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import (
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"errors"
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"os"
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"syscall"
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"testing"
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)
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func TestBindMountOp(t *testing.T) {
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checkOpBehaviour(t, []opBehaviourTestCase{
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{"ENOENT not optional", new(Params), &BindMountOp{
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Source: MustAbs("/bin/"),
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Target: MustAbs("/bin/"),
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}, []kexpect{
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{"evalSymlinks", expectArgs{"/bin/"}, "", syscall.ENOENT},
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}, wrapErrSelf(syscall.ENOENT), nil, nil},
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{"skip optional", new(Params), &BindMountOp{
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Source: MustAbs("/bin/"),
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Target: MustAbs("/bin/"),
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Flags: BindOptional,
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}, []kexpect{
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{"evalSymlinks", expectArgs{"/bin/"}, "", syscall.ENOENT},
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}, nil, nil, nil},
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{"success optional", new(Params), &BindMountOp{
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Source: MustAbs("/bin/"),
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Target: MustAbs("/bin/"),
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Flags: BindOptional,
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}, []kexpect{
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{"evalSymlinks", expectArgs{"/bin/"}, "/usr/bin", nil},
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}, nil, []kexpect{
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{"stat", expectArgs{"/host/usr/bin"}, isDirFi(true), nil},
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{"mkdirAll", expectArgs{"/sysroot/bin", os.FileMode(0700)}, nil, nil},
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{"bindMount", expectArgs{"/host/usr/bin", "/sysroot/bin", uintptr(0x4005), false}, nil, nil},
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}, nil},
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{"ensureFile device", new(Params), &BindMountOp{
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Source: MustAbs("/dev/null"),
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Target: MustAbs("/dev/null"),
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Flags: BindWritable | BindDevice,
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}, []kexpect{
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{"evalSymlinks", expectArgs{"/dev/null"}, "/dev/null", nil},
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}, nil, []kexpect{
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{"stat", expectArgs{"/host/dev/null"}, isDirFi(false), nil},
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{"ensureFile", expectArgs{"/sysroot/dev/null", os.FileMode(0444), os.FileMode(0700)}, nil, errUnique},
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}, errUnique},
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{"mkdirAll ensure", new(Params), &BindMountOp{
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Source: MustAbs("/bin/"),
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Target: MustAbs("/bin/"),
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Flags: BindEnsure,
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}, []kexpect{
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{"mkdirAll", expectArgs{"/bin/", os.FileMode(0700)}, nil, errUnique},
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}, wrapErrSelf(errUnique), nil, nil},
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{"success ensure", new(Params), &BindMountOp{
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Source: MustAbs("/bin/"),
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Target: MustAbs("/usr/bin/"),
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Flags: BindEnsure,
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}, []kexpect{
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{"mkdirAll", expectArgs{"/bin/", os.FileMode(0700)}, nil, nil},
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{"evalSymlinks", expectArgs{"/bin/"}, "/usr/bin", nil},
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}, nil, []kexpect{
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{"stat", expectArgs{"/host/usr/bin"}, isDirFi(true), nil},
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{"mkdirAll", expectArgs{"/sysroot/usr/bin", os.FileMode(0700)}, nil, nil},
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{"bindMount", expectArgs{"/host/usr/bin", "/sysroot/usr/bin", uintptr(0x4005), false}, nil, nil},
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}, nil},
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{"success device ro", new(Params), &BindMountOp{
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Source: MustAbs("/dev/null"),
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Target: MustAbs("/dev/null"),
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Flags: BindDevice,
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}, []kexpect{
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{"evalSymlinks", expectArgs{"/dev/null"}, "/dev/null", nil},
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}, nil, []kexpect{
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{"stat", expectArgs{"/host/dev/null"}, isDirFi(false), nil},
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{"ensureFile", expectArgs{"/sysroot/dev/null", os.FileMode(0444), os.FileMode(0700)}, nil, nil},
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{"bindMount", expectArgs{"/host/dev/null", "/sysroot/dev/null", uintptr(0x4001), false}, nil, nil},
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}, nil},
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{"success device", new(Params), &BindMountOp{
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Source: MustAbs("/dev/null"),
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Target: MustAbs("/dev/null"),
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Flags: BindWritable | BindDevice,
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}, []kexpect{
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{"evalSymlinks", expectArgs{"/dev/null"}, "/dev/null", nil},
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}, nil, []kexpect{
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{"stat", expectArgs{"/host/dev/null"}, isDirFi(false), nil},
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{"ensureFile", expectArgs{"/sysroot/dev/null", os.FileMode(0444), os.FileMode(0700)}, nil, nil},
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{"bindMount", expectArgs{"/host/dev/null", "/sysroot/dev/null", uintptr(0x4000), false}, nil, nil},
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}, nil},
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{"evalSymlinks", new(Params), &BindMountOp{
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Source: MustAbs("/bin/"),
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Target: MustAbs("/bin/"),
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}, []kexpect{
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{"evalSymlinks", expectArgs{"/bin/"}, "/usr/bin", errUnique},
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}, wrapErrSelf(errUnique), nil, nil},
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{"stat", new(Params), &BindMountOp{
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Source: MustAbs("/bin/"),
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Target: MustAbs("/bin/"),
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}, []kexpect{
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{"evalSymlinks", expectArgs{"/bin/"}, "/usr/bin", nil},
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}, nil, []kexpect{
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{"stat", expectArgs{"/host/usr/bin"}, isDirFi(true), errUnique},
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}, wrapErrSelf(errUnique)},
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{"mkdirAll", new(Params), &BindMountOp{
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Source: MustAbs("/bin/"),
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Target: MustAbs("/bin/"),
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}, []kexpect{
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{"evalSymlinks", expectArgs{"/bin/"}, "/usr/bin", nil},
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}, nil, []kexpect{
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{"stat", expectArgs{"/host/usr/bin"}, isDirFi(true), nil},
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{"mkdirAll", expectArgs{"/sysroot/bin", os.FileMode(0700)}, nil, errUnique},
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}, wrapErrSelf(errUnique)},
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{"bindMount", new(Params), &BindMountOp{
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Source: MustAbs("/bin/"),
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Target: MustAbs("/bin/"),
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}, []kexpect{
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{"evalSymlinks", expectArgs{"/bin/"}, "/usr/bin", nil},
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}, nil, []kexpect{
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{"stat", expectArgs{"/host/usr/bin"}, isDirFi(true), nil},
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{"mkdirAll", expectArgs{"/sysroot/bin", os.FileMode(0700)}, nil, nil},
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{"bindMount", expectArgs{"/host/usr/bin", "/sysroot/bin", uintptr(0x4005), false}, nil, errUnique},
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}, errUnique},
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{"success", new(Params), &BindMountOp{
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Source: MustAbs("/bin/"),
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Target: MustAbs("/bin/"),
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}, []kexpect{
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{"evalSymlinks", expectArgs{"/bin/"}, "/usr/bin", nil},
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}, nil, []kexpect{
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{"stat", expectArgs{"/host/usr/bin"}, isDirFi(true), nil},
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{"mkdirAll", expectArgs{"/sysroot/bin", os.FileMode(0700)}, nil, nil},
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{"bindMount", expectArgs{"/host/usr/bin", "/sysroot/bin", uintptr(0x4005), false}, nil, nil},
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}, nil},
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})
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t.Run("unreachable", func(t *testing.T) {
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t.Run("nil sourceFinal not optional", func(t *testing.T) {
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wantErr := msg.WrapErr(os.ErrClosed, "impossible bind state reached")
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if err := new(BindMountOp).apply(nil, nil); !errors.Is(err, wantErr) {
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t.Errorf("apply: error = %v, want %v", err, wantErr)
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}
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})
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})
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checkOpsValid(t, []opValidTestCase{
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{"nil", (*BindMountOp)(nil), false},
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{"zero", new(BindMountOp), false},
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{"nil source", &BindMountOp{Target: MustAbs("/")}, false},
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{"nil target", &BindMountOp{Source: MustAbs("/")}, false},
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{"flag optional ensure", &BindMountOp{Source: MustAbs("/"), Target: MustAbs("/"), Flags: BindOptional | BindEnsure}, false},
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{"valid", &BindMountOp{Source: MustAbs("/"), Target: MustAbs("/")}, true},
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})
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checkOpsBuilder(t, []opsBuilderTestCase{
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{"autoetc", new(Ops).Bind(
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MustAbs("/etc/"),
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MustAbs("/etc/.host/048090b6ed8f9ebb10e275ff5d8c0659"),
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0,
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), Ops{
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&BindMountOp{
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Source: MustAbs("/etc/"),
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Target: MustAbs("/etc/.host/048090b6ed8f9ebb10e275ff5d8c0659"),
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},
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}},
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})
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checkOpIs(t, []opIsTestCase{
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{"zero", new(BindMountOp), new(BindMountOp), false},
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{"internal ne", &BindMountOp{
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Source: MustAbs("/etc/"),
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Target: MustAbs("/etc/.host/048090b6ed8f9ebb10e275ff5d8c0659"),
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}, &BindMountOp{
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Source: MustAbs("/etc/"),
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Target: MustAbs("/etc/.host/048090b6ed8f9ebb10e275ff5d8c0659"),
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sourceFinal: MustAbs("/etc/"),
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}, true},
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{"flags differs", &BindMountOp{
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Source: MustAbs("/etc/"),
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Target: MustAbs("/etc/.host/048090b6ed8f9ebb10e275ff5d8c0659"),
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}, &BindMountOp{
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Source: MustAbs("/etc/"),
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Target: MustAbs("/etc/.host/048090b6ed8f9ebb10e275ff5d8c0659"),
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Flags: BindOptional,
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}, false},
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{"source differs", &BindMountOp{
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Source: MustAbs("/.hakurei/etc/"),
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Target: MustAbs("/etc/.host/048090b6ed8f9ebb10e275ff5d8c0659"),
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}, &BindMountOp{
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Source: MustAbs("/etc/"),
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Target: MustAbs("/etc/.host/048090b6ed8f9ebb10e275ff5d8c0659"),
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}, false},
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{"target differs", &BindMountOp{
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Source: MustAbs("/etc/"),
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Target: MustAbs("/etc/.host/048090b6ed8f9ebb10e275ff5d8c0659"),
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}, &BindMountOp{
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Source: MustAbs("/etc/"),
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Target: MustAbs("/etc/"),
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}, false},
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{"equals", &BindMountOp{
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Source: MustAbs("/etc/"),
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Target: MustAbs("/etc/.host/048090b6ed8f9ebb10e275ff5d8c0659"),
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}, &BindMountOp{
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Source: MustAbs("/etc/"),
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Target: MustAbs("/etc/.host/048090b6ed8f9ebb10e275ff5d8c0659"),
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}, true},
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})
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checkOpMeta(t, []opMetaTestCase{
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{"invalid", new(BindMountOp), "mounting", "<invalid>"},
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{"autoetc", &BindMountOp{
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Source: MustAbs("/etc/"),
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Target: MustAbs("/etc/.host/048090b6ed8f9ebb10e275ff5d8c0659"),
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}, "mounting", `"/etc/" on "/etc/.host/048090b6ed8f9ebb10e275ff5d8c0659" flags 0x0`},
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{"hostdev", &BindMountOp{
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Source: MustAbs("/dev/"),
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Target: MustAbs("/dev/"),
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Flags: BindWritable | BindDevice,
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}, "mounting", `"/dev/" flags 0x6`},
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})
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}
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