diff options
Diffstat (limited to 'pkg/sentry/kernel/shm')
| -rw-r--r-- | pkg/sentry/kernel/shm/shm.go | 30 |
1 files changed, 15 insertions, 15 deletions
diff --git a/pkg/sentry/kernel/shm/shm.go b/pkg/sentry/kernel/shm/shm.go index 92d60ba78..a73f1bdca 100644 --- a/pkg/sentry/kernel/shm/shm.go +++ b/pkg/sentry/kernel/shm/shm.go @@ -38,6 +38,7 @@ import ( "gvisor.dev/gvisor/pkg/abi/linux" "gvisor.dev/gvisor/pkg/context" + "gvisor.dev/gvisor/pkg/hostarch" "gvisor.dev/gvisor/pkg/log" "gvisor.dev/gvisor/pkg/sentry/fs" "gvisor.dev/gvisor/pkg/sentry/kernel/auth" @@ -47,7 +48,6 @@ import ( "gvisor.dev/gvisor/pkg/sentry/usage" "gvisor.dev/gvisor/pkg/sync" "gvisor.dev/gvisor/pkg/syserror" - "gvisor.dev/gvisor/pkg/usermem" ) // Key represents a shm segment key. Analogous to a file name. @@ -197,13 +197,13 @@ func (r *Registry) FindOrCreate(ctx context.Context, pid int32, key Key, size ui } var sizeAligned uint64 - if val, ok := usermem.Addr(size).RoundUp(); ok { + if val, ok := hostarch.Addr(size).RoundUp(); ok { sizeAligned = uint64(val) } else { return nil, syserror.EINVAL } - if numPages := sizeAligned / usermem.PageSize; r.totalPages+numPages > linux.SHMALL { + if numPages := sizeAligned / hostarch.PageSize; r.totalPages+numPages > linux.SHMALL { // "... allocating a segment of the requested size would cause the // system to exceed the system-wide limit on shared memory (SHMALL)." // - man shmget(2) @@ -232,7 +232,7 @@ func (r *Registry) newShm(ctx context.Context, pid int32, key Key, creator fs.Fi panic(fmt.Sprintf("context.Context %T lacks non-nil value for key %T", ctx, pgalloc.CtxMemoryFileProvider)) } - effectiveSize := uint64(usermem.Addr(size).MustRoundUp()) + effectiveSize := uint64(hostarch.Addr(size).MustRoundUp()) fr, err := mfp.MemoryFile().Allocate(effectiveSize, usage.Anonymous) if err != nil { return nil, err @@ -267,7 +267,7 @@ func (r *Registry) newShm(ctx context.Context, pid int32, key Key, creator fs.Fi r.shms[id] = shm r.keysToShms[key] = shm - r.totalPages += effectiveSize / usermem.PageSize + r.totalPages += effectiveSize / hostarch.PageSize return shm, nil } @@ -318,7 +318,7 @@ func (r *Registry) remove(s *Shm) { } delete(r.shms, s.ID) - r.totalPages -= s.effectiveSize / usermem.PageSize + r.totalPages -= s.effectiveSize / hostarch.PageSize } // Release drops the self-reference of each active shm segment in the registry. @@ -386,7 +386,7 @@ type Shm struct { // effectiveSize of the segment, rounding up to the next page // boundary. Immutable. // - // Invariant: effectiveSize must be a multiple of usermem.PageSize. + // Invariant: effectiveSize must be a multiple of hostarch.PageSize. effectiveSize uint64 // fr is the offset into mfp.MemoryFile() that backs this contents of this @@ -467,7 +467,7 @@ func (s *Shm) Msync(context.Context, memmap.MappableRange) error { } // AddMapping implements memmap.Mappable.AddMapping. -func (s *Shm) AddMapping(ctx context.Context, _ memmap.MappingSpace, _ usermem.AddrRange, _ uint64, _ bool) error { +func (s *Shm) AddMapping(ctx context.Context, _ memmap.MappingSpace, _ hostarch.AddrRange, _ uint64, _ bool) error { s.mu.Lock() defer s.mu.Unlock() s.attachTime = ktime.NowFromContext(ctx) @@ -482,7 +482,7 @@ func (s *Shm) AddMapping(ctx context.Context, _ memmap.MappingSpace, _ usermem.A } // RemoveMapping implements memmap.Mappable.RemoveMapping. -func (s *Shm) RemoveMapping(ctx context.Context, _ memmap.MappingSpace, _ usermem.AddrRange, _ uint64, _ bool) { +func (s *Shm) RemoveMapping(ctx context.Context, _ memmap.MappingSpace, _ hostarch.AddrRange, _ uint64, _ bool) { s.mu.Lock() defer s.mu.Unlock() // RemoveMapping may be called during task exit, when ctx @@ -503,12 +503,12 @@ func (s *Shm) RemoveMapping(ctx context.Context, _ memmap.MappingSpace, _ userme } // CopyMapping implements memmap.Mappable.CopyMapping. -func (*Shm) CopyMapping(context.Context, memmap.MappingSpace, usermem.AddrRange, usermem.AddrRange, uint64, bool) error { +func (*Shm) CopyMapping(context.Context, memmap.MappingSpace, hostarch.AddrRange, hostarch.AddrRange, uint64, bool) error { return nil } // Translate implements memmap.Mappable.Translate. -func (s *Shm) Translate(ctx context.Context, required, optional memmap.MappableRange, at usermem.AccessType) ([]memmap.Translation, error) { +func (s *Shm) Translate(ctx context.Context, required, optional memmap.MappableRange, at hostarch.AccessType) ([]memmap.Translation, error) { var err error if required.End > s.fr.Length() { err = &memmap.BusError{syserror.EFAULT} @@ -519,7 +519,7 @@ func (s *Shm) Translate(ctx context.Context, required, optional memmap.MappableR Source: source, File: s.mfp.MemoryFile(), Offset: s.fr.Start + source.Start, - Perms: usermem.AnyAccess, + Perms: hostarch.AnyAccess, }, }, err } @@ -543,7 +543,7 @@ type AttachOpts struct { // // Postconditions: The returned MMapOpts are valid only as long as a reference // continues to be held on s. -func (s *Shm) ConfigureAttach(ctx context.Context, addr usermem.Addr, opts AttachOpts) (memmap.MMapOpts, error) { +func (s *Shm) ConfigureAttach(ctx context.Context, addr hostarch.Addr, opts AttachOpts) (memmap.MMapOpts, error) { s.mu.Lock() defer s.mu.Unlock() if s.pendingDestruction && s.ReadRefs() == 0 { @@ -565,12 +565,12 @@ func (s *Shm) ConfigureAttach(ctx context.Context, addr usermem.Addr, opts Attac Offset: 0, Addr: addr, Fixed: opts.Remap, - Perms: usermem.AccessType{ + Perms: hostarch.AccessType{ Read: true, Write: !opts.Readonly, Execute: opts.Execute, }, - MaxPerms: usermem.AnyAccess, + MaxPerms: hostarch.AnyAccess, Mappable: s, MappingIdentity: s, }, nil |