gvisor.dev/gvisor@v0.0.0-20240520182842-f9d4d51c7e0f/tools/checklinkname/test/test_unsafe.go (about) 1 // Copyright 2021 The gVisor Authors. 2 // 3 // Licensed under the Apache License, Version 2.0 (the "License"); 4 // you may not use this file except in compliance with the License. 5 // You may obtain a copy of the License at 6 // 7 // http://www.apache.org/licenses/LICENSE-2.0 8 // 9 // Unless required by applicable law or agreed to in writing, software 10 // distributed under the License is distributed on an "AS IS" BASIS, 11 // WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 12 // See the License for the specific language governing permissions and 13 // limitations under the License. 14 15 // Package test provides linkname test targets. 16 package test 17 18 import ( 19 _ "unsafe" // for go:linkname. 20 ) 21 22 //go:linkname detachedLinkname runtime.fastrand 23 24 //go:linkname attachedLinkname runtime.entersyscall 25 func attachedLinkname() 26 27 // AttachedLinkname reexports attachedLinkname because go vet doesn't like an 28 // exported go:linkname without a comment starting with "// AttachedLinkname". 29 func AttachedLinkname() { 30 attachedLinkname() 31 } 32 33 // detachedLinkname has a linkname elsewhere in the file. 34 func detachedLinkname() uint32