diff options
| author | Rahat Mahmood <rahat@google.com> | 2018-12-12 13:09:10 -0800 |
|---|---|---|
| committer | Shentubot <shentubot@google.com> | 2018-12-12 13:09:59 -0800 |
| commit | 75e39eaa74c65b6f7cfb95addb6ac0cbcc7d951a (patch) | |
| tree | 1a6b64491851e002727a08546f1168c89b9c32aa /pkg/sentry/mm/syscalls.go | |
| parent | a2c868a098fcb51dcdf629045c5f5c0f68c2766f (diff) | |
Pass information about map writableness to filesystems.
This is necessary to implement file seals for memfds.
PiperOrigin-RevId: 225239394
Change-Id: Ib3f1ab31385afc4b24e96cd81a05ef1bebbcbb70
Diffstat (limited to 'pkg/sentry/mm/syscalls.go')
| -rw-r--r-- | pkg/sentry/mm/syscalls.go | 4 |
1 files changed, 2 insertions, 2 deletions
diff --git a/pkg/sentry/mm/syscalls.go b/pkg/sentry/mm/syscalls.go index 1a46c2105..daaae4da1 100644 --- a/pkg/sentry/mm/syscalls.go +++ b/pkg/sentry/mm/syscalls.go @@ -443,7 +443,7 @@ func (mm *MemoryManager) MRemap(ctx context.Context, oldAddr usermem.Addr, oldSi return 0, syserror.EINVAL } // Inform the Mappable, if any, of the new mapping. - if err := vma.mappable.CopyMapping(ctx, mm, oldAR, newAR, vseg.mappableOffsetAt(oldAR.Start)); err != nil { + if err := vma.mappable.CopyMapping(ctx, mm, oldAR, newAR, vseg.mappableOffsetAt(oldAR.Start), vma.isMappableAsWritable()); err != nil { return 0, err } } @@ -498,7 +498,7 @@ func (mm *MemoryManager) MRemap(ctx context.Context, oldAddr usermem.Addr, oldSi // Now that pmas have been moved to newAR, we can notify vma.mappable that // oldAR is no longer mapped. if vma.mappable != nil { - vma.mappable.RemoveMapping(ctx, mm, oldAR, vma.off) + vma.mappable.RemoveMapping(ctx, mm, oldAR, vma.off, vma.isMappableAsWritable()) } return newAR.Start, nil |