diff options
Diffstat (limited to 'pkg/sentry/loader/vdso.go')
| -rw-r--r-- | pkg/sentry/loader/vdso.go | 21 |
1 files changed, 11 insertions, 10 deletions
diff --git a/pkg/sentry/loader/vdso.go b/pkg/sentry/loader/vdso.go index c070c7316..273f6b5b9 100644 --- a/pkg/sentry/loader/vdso.go +++ b/pkg/sentry/loader/vdso.go @@ -28,7 +28,7 @@ import ( "gvisor.googlesource.com/gvisor/pkg/sentry/fs/fsutil" "gvisor.googlesource.com/gvisor/pkg/sentry/memmap" "gvisor.googlesource.com/gvisor/pkg/sentry/mm" - "gvisor.googlesource.com/gvisor/pkg/sentry/platform" + "gvisor.googlesource.com/gvisor/pkg/sentry/pgalloc" "gvisor.googlesource.com/gvisor/pkg/sentry/safemem" "gvisor.googlesource.com/gvisor/pkg/sentry/uniqueid" "gvisor.googlesource.com/gvisor/pkg/sentry/usage" @@ -217,7 +217,7 @@ type VDSO struct { // PrepareVDSO validates the system VDSO and returns a VDSO, containing the // param page for updating by the kernel. -func PrepareVDSO(p platform.Platform) (*VDSO, error) { +func PrepareVDSO(mfp pgalloc.MemoryFileProvider) (*VDSO, error) { vdsoFile := newByteReaderFile(vdsoBin) // First make sure the VDSO is valid. vdsoFile does not use ctx, so a @@ -234,35 +234,36 @@ func PrepareVDSO(p platform.Platform) (*VDSO, error) { return nil, fmt.Errorf("VDSO size overflows? %#x", len(vdsoBin)) } - vdso, err := p.Memory().Allocate(uint64(size), usage.System) + mf := mfp.MemoryFile() + vdso, err := mf.Allocate(uint64(size), usage.System) if err != nil { return nil, fmt.Errorf("unable to allocate VDSO memory: %v", err) } - ims, err := p.Memory().MapInternal(vdso, usermem.ReadWrite) + ims, err := mf.MapInternal(vdso, usermem.ReadWrite) if err != nil { - p.Memory().DecRef(vdso) + mf.DecRef(vdso) return nil, fmt.Errorf("unable to map VDSO memory: %v", err) } _, err = safemem.CopySeq(ims, safemem.BlockSeqOf(safemem.BlockFromSafeSlice(vdsoBin))) if err != nil { - p.Memory().DecRef(vdso) + mf.DecRef(vdso) return nil, fmt.Errorf("unable to copy VDSO into memory: %v", err) } // Finally, allocate a param page for this VDSO. - paramPage, err := p.Memory().Allocate(usermem.PageSize, usage.System) + paramPage, err := mf.Allocate(usermem.PageSize, usage.System) if err != nil { - p.Memory().DecRef(vdso) + mf.DecRef(vdso) return nil, fmt.Errorf("unable to allocate VDSO param page: %v", err) } return &VDSO{ - ParamPage: mm.NewSpecialMappable("[vvar]", p, paramPage), + ParamPage: mm.NewSpecialMappable("[vvar]", mfp, paramPage), // TODO: Don't advertise the VDSO, as some applications may // not be able to handle multiple [vdso] hints. - vdso: mm.NewSpecialMappable("", p, vdso), + vdso: mm.NewSpecialMappable("", mfp, vdso), phdrs: info.phdrs, }, nil } |