github.com/maruel/nin@v0.0.0-20220112143044-f35891e3ce7e/subprocess_posix_test.go (about) 1 // Copyright 2012 Google Inc. All Rights Reserved. 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 //go:build !windows 16 // +build !windows 17 18 package nin 19 20 import ( 21 "syscall" 22 "testing" 23 ) 24 25 func subprocessTestFixUlimit(t *testing.T, numHandles int) { 26 var r syscall.Rlimit 27 if err := syscall.Getrlimit(syscall.RLIMIT_NOFILE, &r); err != nil { 28 t.Fatal("error getting rlimit ", err) 29 } 30 if r.Cur < uint64(numHandles) { 31 if r.Max < uint64(numHandles) { 32 t.Fatal("raise [ulimit -n] above %u (currently %lu) to make this test go", uint64(numHandles), r.Cur) 33 } 34 // Lots of test cases open files, so make it a bit larger. 35 r.Cur = 4 * uint64(numHandles) 36 if err := syscall.Setrlimit(syscall.RLIMIT_NOFILE, &r); err != nil { 37 t.Fatal(err) 38 } 39 } 40 }