diff options
| author | Fabricio Voznika <fvoznika@google.com> | 2018-09-18 02:08:11 -0700 |
|---|---|---|
| committer | Shentubot <shentubot@google.com> | 2018-09-18 02:09:28 -0700 |
| commit | da20559137ccbf7f27e6008472f4d9159306df4a (patch) | |
| tree | 72e7a905daa9de1c61e3754cf2ef2c233fd01443 /pkg/sentry/platform/filemem | |
| parent | 5d9816be41a967fa1fa9bbbe0c638dd322c7c0b1 (diff) | |
Provide better message when memfd_create fails with ENOSYS
Updates #100
PiperOrigin-RevId: 213414821
Change-Id: I90c2e6c18c54a6afcd7ad6f409f670aa31577d37
Diffstat (limited to 'pkg/sentry/platform/filemem')
| -rw-r--r-- | pkg/sentry/platform/filemem/filemem.go | 3 |
1 files changed, 3 insertions, 0 deletions
diff --git a/pkg/sentry/platform/filemem/filemem.go b/pkg/sentry/platform/filemem/filemem.go index feb020ef8..f278c8d63 100644 --- a/pkg/sentry/platform/filemem/filemem.go +++ b/pkg/sentry/platform/filemem/filemem.go @@ -233,6 +233,9 @@ func newFromFile(file *os.File) (*FileMem, error) { func New(name string) (*FileMem, error) { fd, err := memutil.CreateMemFD(name, 0) if err != nil { + if e, ok := err.(syscall.Errno); ok && e == syscall.ENOSYS { + return nil, fmt.Errorf("memfd_create(2) is not implemented. Check that you have Linux 3.17 or higher") + } return nil, err } return newFromFile(os.NewFile(uintptr(fd), name)) |