Files
visor/runsc/config/BUILD
T
zeekayandHanzo Dev 3da05638df State the ZAP wire of every urpc payload
urpc encodes with encoding/json, which walks the payload on every call: a
realistic control.ExecArgs costs 7084ns and 10 allocations to cross. ZAP
reads a field at a constant offset out of the buffer that arrived, so the
same payload is 740ns and one allocation -- but only if the offsets are
stated, and a stated offset that is wrong is silent corruption rather than
a compile error. So state them from the types themselves.

//tools/zap reflects over the payloads at build time and writes the wire
as Go source with the offsets as constants. It lives inside Bazel because
pkg/sentry/control cannot be imported from outside it: the *_go_proto
packages it depends on have no source in the tree.

Six payloads had no layout to state. A map, an interface and a type from
another module have no offsets, so each is answered in the type:

  SaveOpts.Metadata and StartContainerArgs.InitialCgroups/Limits cross as
  lists of pairs; boot.Route.Destination restates net.IPNet as Subnet;
  OpenMountArgs restates the OCI mount fields the call actually uses;
  StartArgs.Spec and SinkConfig.Config carry their documents as the bytes
  they arrived as; MetricsRegistrationResponse carries the protocol
  buffer the same way; and seccheck's session options become a type
  instead of a map of any.

ExecArgs and MetricsExportData still have none: ExecArgs holds live
kernel objects behind an interface, and MetricsExportData reaches a
prometheus snapshot whose labels are a map.

Co-authored-by: Hanzo Dev <[email protected]>
2026-09-22 23:10:33 -07:00

44 lines
882 B
Python

load("//tools:defs.bzl", "go_library", "go_test")
package(
default_applicable_licenses = ["//:license"],
licenses = ["notice"],
)
go_library(
name = "config",
srcs = [
"cgo_disabled.go",
"cgo_enabled.go",
"config.go",
"config_bundles.go",
"flags.go",
"flags_graveyard.go",
"zap.go",
],
visibility = ["//:sandbox"],
deps = [
"//pkg/log",
"//pkg/refs",
"//pkg/sentry/devices/nvproxy/nvconf",
"//pkg/sync",
"//runsc/flag",
"//runsc/version",
"@com_github_zap_proto_go//:go",
],
)
go_test(
name = "config_test",
size = "small",
srcs = [
"config_test.go",
"flags_test.go",
],
library = ":config",
deps = [
"//runsc/flag",
"@com_github_google_go_cmp//cmp:go_default_library",
],
)