mirror of
https://github.com/superseriousbusiness/gotosocial.git
synced 2024-12-05 18:12:46 +00:00
96eea416f3
Bumps [golang.org/x/net](https://github.com/golang/net) from 0.24.0 to 0.25.0. - [Commits](https://github.com/golang/net/compare/v0.24.0...v0.25.0) --- updated-dependencies: - dependency-name: golang.org/x/net dependency-type: direct:production update-type: version-update:semver-minor ... Signed-off-by: dependabot[bot] <support@github.com> Co-authored-by: dependabot[bot] <49699333+dependabot[bot]@users.noreply.github.com>
52 lines
1.4 KiB
Go
52 lines
1.4 KiB
Go
// Copyright 2021 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 (darwin && !ios) || linux || zos
|
|
|
|
package unix
|
|
|
|
import "unsafe"
|
|
|
|
// SysvShmAttach attaches the Sysv shared memory segment associated with the
|
|
// shared memory identifier id.
|
|
func SysvShmAttach(id int, addr uintptr, flag int) ([]byte, error) {
|
|
addr, errno := shmat(id, addr, flag)
|
|
if errno != nil {
|
|
return nil, errno
|
|
}
|
|
|
|
// Retrieve the size of the shared memory to enable slice creation
|
|
var info SysvShmDesc
|
|
|
|
_, err := SysvShmCtl(id, IPC_STAT, &info)
|
|
if err != nil {
|
|
// release the shared memory if we can't find the size
|
|
|
|
// ignoring error from shmdt as there's nothing sensible to return here
|
|
shmdt(addr)
|
|
return nil, err
|
|
}
|
|
|
|
// Use unsafe to convert addr into a []byte.
|
|
b := unsafe.Slice((*byte)(unsafe.Pointer(addr)), int(info.Segsz))
|
|
return b, nil
|
|
}
|
|
|
|
// SysvShmDetach unmaps the shared memory slice returned from SysvShmAttach.
|
|
//
|
|
// It is not safe to use the slice after calling this function.
|
|
func SysvShmDetach(data []byte) error {
|
|
if len(data) == 0 {
|
|
return EINVAL
|
|
}
|
|
|
|
return shmdt(uintptr(unsafe.Pointer(&data[0])))
|
|
}
|
|
|
|
// SysvShmGet returns the Sysv shared memory identifier associated with key.
|
|
// If the IPC_CREAT flag is specified a new segment is created.
|
|
func SysvShmGet(key, size, flag int) (id int, err error) {
|
|
return shmget(key, size, flag)
|
|
}
|