github.com/go4org/go4@v0.0.0-20200104003542-c7e774b10ea0/osutil/exec_procfs.go (about) 1 // Copyright 2015 The go4 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 // +build linux netbsd openbsd dragonfly nacl 16 17 package osutil 18 19 import ( 20 "errors" 21 "os" 22 "path/filepath" 23 "runtime" 24 ) 25 26 func executable() (string, error) { 27 var procfn string 28 switch runtime.GOOS { 29 default: 30 return "", errors.New("Executable not implemented for " + runtime.GOOS) 31 case "linux": 32 procfn = "/proc/self/exe" 33 case "netbsd": 34 procfn = "/proc/curproc/exe" 35 case "openbsd": 36 procfn = "/proc/curproc/file" 37 case "dragonfly": 38 procfn = "/proc/curproc/file" 39 } 40 p, err := os.Readlink(procfn) 41 return filepath.Clean(p), err 42 }