diff options
Diffstat (limited to 'pkg/sentry/loader/vdso.go')
| -rw-r--r-- | pkg/sentry/loader/vdso.go | 25 |
1 files changed, 13 insertions, 12 deletions
diff --git a/pkg/sentry/loader/vdso.go b/pkg/sentry/loader/vdso.go index a32d37d62..fd54261fd 100644 --- a/pkg/sentry/loader/vdso.go +++ b/pkg/sentry/loader/vdso.go @@ -23,6 +23,7 @@ import ( "gvisor.dev/gvisor/pkg/abi" "gvisor.dev/gvisor/pkg/context" + "gvisor.dev/gvisor/pkg/hostarch" "gvisor.dev/gvisor/pkg/log" "gvisor.dev/gvisor/pkg/safemem" "gvisor.dev/gvisor/pkg/sentry/arch" @@ -90,7 +91,7 @@ func validateVDSO(ctx context.Context, f fullReader, size uint64) (elfInfo, erro var first *elf.ProgHeader var prev *elf.ProgHeader - var prevEnd usermem.Addr + var prevEnd hostarch.Addr for i, phdr := range info.phdrs { if phdr.Type != elf.PT_LOAD { continue @@ -119,7 +120,7 @@ func validateVDSO(ctx context.Context, f fullReader, size uint64) (elfInfo, erro return elfInfo{}, syserror.ENOEXEC } - start := usermem.Addr(memoryOffset) + start := hostarch.Addr(memoryOffset) end, ok := start.AddLength(phdr.Memsz) if !ok { log.Warningf("PT_LOAD segment size overflows: %#x + %#x", start, end) @@ -210,7 +211,7 @@ func PrepareVDSO(mfp pgalloc.MemoryFileProvider) (*VDSO, error) { } // Then copy it into a VDSO mapping. - size, ok := usermem.Addr(len(vdsodata.Binary)).RoundUp() + size, ok := hostarch.Addr(len(vdsodata.Binary)).RoundUp() if !ok { return nil, fmt.Errorf("VDSO size overflows? %#x", len(vdsodata.Binary)) } @@ -221,7 +222,7 @@ func PrepareVDSO(mfp pgalloc.MemoryFileProvider) (*VDSO, error) { return nil, fmt.Errorf("unable to allocate VDSO memory: %v", err) } - ims, err := mf.MapInternal(vdso, usermem.ReadWrite) + ims, err := mf.MapInternal(vdso, hostarch.ReadWrite) if err != nil { mf.DecRef(vdso) return nil, fmt.Errorf("unable to map VDSO memory: %v", err) @@ -234,7 +235,7 @@ func PrepareVDSO(mfp pgalloc.MemoryFileProvider) (*VDSO, error) { } // Finally, allocate a param page for this VDSO. - paramPage, err := mf.Allocate(usermem.PageSize, usage.System) + paramPage, err := mf.Allocate(hostarch.PageSize, usage.System) if err != nil { mf.DecRef(vdso) return nil, fmt.Errorf("unable to allocate VDSO param page: %v", err) @@ -266,7 +267,7 @@ func PrepareVDSO(mfp pgalloc.MemoryFileProvider) (*VDSO, error) { // compatibility with such binaries, we load the VDSO much like Linux. // // loadVDSO takes a reference on the VDSO and parameter page FrameRegions. -func loadVDSO(ctx context.Context, m *mm.MemoryManager, v *VDSO, bin loadedELF) (usermem.Addr, error) { +func loadVDSO(ctx context.Context, m *mm.MemoryManager, v *VDSO, bin loadedELF) (hostarch.Addr, error) { if v.os != bin.os { ctx.Warningf("Binary ELF OS %v and VDSO ELF OS %v differ", bin.os, v.os) return 0, syserror.ENOEXEC @@ -297,8 +298,8 @@ func loadVDSO(ctx context.Context, m *mm.MemoryManager, v *VDSO, bin loadedELF) Fixed: true, Unmap: true, Private: true, - Perms: usermem.Read, - MaxPerms: usermem.Read, + Perms: hostarch.Read, + MaxPerms: hostarch.Read, }) if err != nil { ctx.Infof("Unable to map VDSO param page: %v", err) @@ -318,8 +319,8 @@ func loadVDSO(ctx context.Context, m *mm.MemoryManager, v *VDSO, bin loadedELF) Fixed: true, Unmap: true, Private: true, - Perms: usermem.Read, - MaxPerms: usermem.AnyAccess, + Perms: hostarch.Read, + MaxPerms: hostarch.AnyAccess, }) if err != nil { ctx.Infof("Unable to map VDSO: %v", err) @@ -349,7 +350,7 @@ func loadVDSO(ctx context.Context, m *mm.MemoryManager, v *VDSO, bin loadedELF) return 0, syserror.ENOEXEC } segPage := segAddr.RoundDown() - segSize := usermem.Addr(phdr.Memsz) + segSize := hostarch.Addr(phdr.Memsz) segSize, ok = segSize.AddLength(segAddr.PageOffset()) if !ok { ctx.Warningf("PT_LOAD segment memsize %#x + offset %#x overflows", phdr.Memsz, segAddr.PageOffset()) @@ -371,7 +372,7 @@ func loadVDSO(ctx context.Context, m *mm.MemoryManager, v *VDSO, bin loadedELF) } perms := progFlagsAsPerms(phdr.Flags) - if perms != usermem.Read { + if perms != hostarch.Read { if err := m.MProtect(segPage, uint64(segSize), perms, false); err != nil { ctx.Warningf("Unable to set PT_LOAD segment protections %+v at [%#x, %#x): %v", perms, segAddr, segEnd, err) return 0, syserror.ENOEXEC |