cmd/hakurei/testsuite: handle dynamic linker race

This retries when seeing files opened by the dynamic linker. This will
eventually be replaced by a statically linked anchor program that never
opens any files on its own.

Signed-off-by: Ophestra <cat@gensokyo.uk>

1 files changed, 9 insertions, 1 deletions

diff --git a/cmd/hakurei/testsuite/sandbox/main.go b/cmd/hakurei/testsuite/sandbox/main.go
index 2b2cbed2..681718a7 100644
--- a/cmd/hakurei/testsuite/sandbox/main.go
+++ b/cmd/hakurei/testsuite/sandbox/main.go
@@ -6,6 +6,7 @@ package main
 
 import (
 	"context"
+	"errors"
 	"fmt"
 	"log"
 	"os"
@@ -288,7 +289,8 @@ func main() {
 		pid, done := mustStart(c, testsuite.NewSerial(), 0, &cred, os.Stdin, os.Stdout, os.Stderr)
 		prefix := filepath.Join(fhs.Proc, strconv.Itoa(pid), "fd")
 
-		var fail bool
+	retry: // TODO(ophestra): use statically linked anchor program
+		fail := false
 		if entries, err := os.ReadDir(prefix); err != nil {
 			log.Fatal(err.Error())
 		} else {
@@ -309,8 +311,14 @@ func main() {
 					prefix,
 					ent.Name(),
 				)); err != nil {
+					if errors.Is(err, os.ErrNotExist) {
+						goto retry
+					}
 					log.Fatal(err.Error())
 				}
+				if strings.HasPrefix(d, "/lib") {
+					goto retry
+				}
 				log.Printf("extra fd %d -> %s", fd, d)
 			}
 		}