diff options
Diffstat (limited to 'runsc/boot/fds.go')
| -rw-r--r-- | runsc/boot/fds.go | 14 |
1 files changed, 9 insertions, 5 deletions
diff --git a/runsc/boot/fds.go b/runsc/boot/fds.go index 9de5a78b1..92d641b68 100644 --- a/runsc/boot/fds.go +++ b/runsc/boot/fds.go @@ -16,7 +16,6 @@ package boot import ( "fmt" - "syscall" "gvisor.googlesource.com/gvisor/pkg/sentry/context" "gvisor.googlesource.com/gvisor/pkg/sentry/fs" @@ -28,15 +27,20 @@ import ( // createFDMap creates an fd map that contains stdin, stdout, and stderr. If // console is true, then ioctl calls will be passed through to the host fd. -func createFDMap(ctx context.Context, k *kernel.Kernel, l *limits.LimitSet, console bool) (*kernel.FDMap, error) { +// Upon success, createFDMap dups then closes stdioFDs. +func createFDMap(ctx context.Context, k *kernel.Kernel, l *limits.LimitSet, console bool, stdioFDs []int) (*kernel.FDMap, error) { + if len(stdioFDs) != 3 { + return nil, fmt.Errorf("stdioFDs should contain exactly 3 FDs (stdin, stdout, and stderr), but %d FDs received", len(stdioFDs)) + } + fdm := k.NewFDMap() defer fdm.DecRef() // Maps sandbox fd to host fd. fdMap := map[int]int{ - 0: syscall.Stdin, - 1: syscall.Stdout, - 2: syscall.Stderr, + 0: stdioFDs[0], + 1: stdioFDs[1], + 2: stdioFDs[2], } mounter := fs.FileOwnerFromContext(ctx) |