diff options
Diffstat (limited to 'internal')
| -rw-r--r-- | internal/outcome/main.go | 13 |
1 files changed, 13 insertions, 0 deletions
diff --git a/internal/outcome/main.go b/internal/outcome/main.go index a32d220a..1f02fafb 100644 --- a/internal/outcome/main.go +++ b/internal/outcome/main.go @@ -4,13 +4,26 @@ import ( "context" "log" "time" + _ "unsafe" // for go:linkname "hakurei.app/hst" "hakurei.app/message" ) +// IsPollDescriptor reports whether fd is the descriptor being used by the poller. +// +//go:linkname IsPollDescriptor internal/poll.IsPollDescriptor +func IsPollDescriptor(fd uintptr) bool + // Main runs an app according to [hst.Config] and terminates. Main does not return. func Main(ctx context.Context, msg message.Msg, config *hst.Config, fd int) { + // avoids runtime internals or standard streams + if fd >= 0 { + if IsPollDescriptor(uintptr(fd)) || fd < 3 { + log.Fatalf("invalid identifier fd %d", fd) + } + } + var id hst.ID if err := hst.NewInstanceID(&id); err != nil { log.Fatal(err.Error()) |