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container: allow additional state between ops

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This is useful for ops that need to be aware of previous instances of themselves.

Signed-off-by: Ophestra <cat@gensokyo.uk>
This commit is contained in:
Ophestra
2025-08-17 01:29:54 +09:00
parent f9edec7e41
commit 8aa65f28c6
4 changed files with 44 additions and 38 deletions
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6
container/init.go
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@@ -121,6 +121,8 @@ func Init(prepare func(prefix string), setVerbose func(verbose bool)) {
log.Fatalf("cannot make / rslave: %v", err)
}
state := &setupState{Params: &params.Params}
/* early is called right before pivot_root into intermediate root;
this step is mostly for gathering information that would otherwise be difficult to obtain
via library functions after pivot_root, and implementations are expected to avoid changing
@@ -130,7 +132,7 @@ func Init(prepare func(prefix string), setVerbose func(verbose bool)) {
log.Fatalf("invalid op %d", i)
}
if err := op.early(&params.Params); err != nil {
if err := op.early(state); err != nil {
msg.PrintBaseErr(err,
fmt.Sprintf("cannot prepare op %d:", i))
msg.BeforeExit()
@@ -170,7 +172,7 @@ func Init(prepare func(prefix string), setVerbose func(verbose bool)) {
for i, op := range *params.Ops {
// ops already checked during early setup
msg.Verbosef("%s %s", op.prefix(), op)
if err := op.apply(&params.Params); err != nil {
if err := op.apply(state); err != nil {
msg.PrintBaseErr(err,
fmt.Sprintf("cannot apply op %d:", i))
msg.BeforeExit()