Renovate Bot
e18d664d5a
Some checks failed
Dev Version / Release (push) Has been cancelled
This PR contains the following updates: | Package | Type | Update | Change | |---|---|---|---| | golang.org/x/crypto | require | minor | `v0.14.0` -> `v0.27.0` | --- ### Configuration 📅 **Schedule**: Branch creation - At any time (no schedule defined), Automerge - At any time (no schedule defined). 🚦 **Automerge**: Disabled by config. Please merge this manually once you are satisfied. ♻ **Rebasing**: Whenever PR becomes conflicted, or you tick the rebase/retry checkbox. 🔕 **Ignore**: Close this PR and you won't be reminded about this update again. --- - [ ] <!-- rebase-check -->If you want to rebase/retry this PR, check this box --- This PR has been generated by [Renovate Bot](https://github.com/renovatebot/renovate). <!--renovate-debug:eyJjcmVhdGVkSW5WZXIiOiIzOC4yMS4yIiwidXBkYXRlZEluVmVyIjoiMzguMjEuMiIsInRhcmdldEJyYW5jaCI6Im1haW4iLCJsYWJlbHMiOltdfQ==--> Reviewed-on: #6 Co-authored-by: Renovate Bot <renovate@keks.cloud> Co-committed-by: Renovate Bot <renovate@keks.cloud>
57 lines
1.6 KiB
Go
57 lines
1.6 KiB
Go
// Copyright 2023 The Go Authors. All rights reserved.
|
|
// Use of this source code is governed by a BSD-style
|
|
// license that can be found in the LICENSE file.
|
|
|
|
//go:build linux || netbsd
|
|
|
|
package unix
|
|
|
|
import "unsafe"
|
|
|
|
type mremapMmapper struct {
|
|
mmapper
|
|
mremap func(oldaddr uintptr, oldlength uintptr, newlength uintptr, flags int, newaddr uintptr) (xaddr uintptr, err error)
|
|
}
|
|
|
|
var mapper = &mremapMmapper{
|
|
mmapper: mmapper{
|
|
active: make(map[*byte][]byte),
|
|
mmap: mmap,
|
|
munmap: munmap,
|
|
},
|
|
mremap: mremap,
|
|
}
|
|
|
|
func (m *mremapMmapper) Mremap(oldData []byte, newLength int, flags int) (data []byte, err error) {
|
|
if newLength <= 0 || len(oldData) == 0 || len(oldData) != cap(oldData) || flags&mremapFixed != 0 {
|
|
return nil, EINVAL
|
|
}
|
|
|
|
pOld := &oldData[cap(oldData)-1]
|
|
m.Lock()
|
|
defer m.Unlock()
|
|
bOld := m.active[pOld]
|
|
if bOld == nil || &bOld[0] != &oldData[0] {
|
|
return nil, EINVAL
|
|
}
|
|
newAddr, errno := m.mremap(uintptr(unsafe.Pointer(&bOld[0])), uintptr(len(bOld)), uintptr(newLength), flags, 0)
|
|
if errno != nil {
|
|
return nil, errno
|
|
}
|
|
bNew := unsafe.Slice((*byte)(unsafe.Pointer(newAddr)), newLength)
|
|
pNew := &bNew[cap(bNew)-1]
|
|
if flags&mremapDontunmap == 0 {
|
|
delete(m.active, pOld)
|
|
}
|
|
m.active[pNew] = bNew
|
|
return bNew, nil
|
|
}
|
|
|
|
func Mremap(oldData []byte, newLength int, flags int) (data []byte, err error) {
|
|
return mapper.Mremap(oldData, newLength, flags)
|
|
}
|
|
|
|
func MremapPtr(oldAddr unsafe.Pointer, oldSize uintptr, newAddr unsafe.Pointer, newSize uintptr, flags int) (ret unsafe.Pointer, err error) {
|
|
xaddr, err := mapper.mremap(uintptr(oldAddr), oldSize, newSize, flags, uintptr(newAddr))
|
|
return unsafe.Pointer(xaddr), err
|
|
}
|