diff options
Diffstat (limited to 'vendor/github.com/kardianos/osext/osext_sysctl.go')
-rw-r--r-- | vendor/github.com/kardianos/osext/osext_sysctl.go | 126 |
1 files changed, 0 insertions, 126 deletions
diff --git a/vendor/github.com/kardianos/osext/osext_sysctl.go b/vendor/github.com/kardianos/osext/osext_sysctl.go deleted file mode 100644 index 33cee252..00000000 --- a/vendor/github.com/kardianos/osext/osext_sysctl.go +++ /dev/null @@ -1,126 +0,0 @@ -// Copyright 2012 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. - -// +build !go1.8,darwin !go1.8,freebsd openbsd - -package osext - -import ( - "os" - "os/exec" - "path/filepath" - "runtime" - "syscall" - "unsafe" -) - -var initCwd, initCwdErr = os.Getwd() - -func executable() (string, error) { - var mib [4]int32 - switch runtime.GOOS { - case "freebsd": - mib = [4]int32{1 /* CTL_KERN */, 14 /* KERN_PROC */, 12 /* KERN_PROC_PATHNAME */, -1} - case "darwin": - mib = [4]int32{1 /* CTL_KERN */, 38 /* KERN_PROCARGS */, int32(os.Getpid()), -1} - case "openbsd": - mib = [4]int32{1 /* CTL_KERN */, 55 /* KERN_PROC_ARGS */, int32(os.Getpid()), 1 /* KERN_PROC_ARGV */} - } - - n := uintptr(0) - // Get length. - _, _, errNum := syscall.Syscall6(syscall.SYS___SYSCTL, uintptr(unsafe.Pointer(&mib[0])), 4, 0, uintptr(unsafe.Pointer(&n)), 0, 0) - if errNum != 0 { - return "", errNum - } - if n == 0 { // This shouldn't happen. - return "", nil - } - buf := make([]byte, n) - _, _, errNum = syscall.Syscall6(syscall.SYS___SYSCTL, uintptr(unsafe.Pointer(&mib[0])), 4, uintptr(unsafe.Pointer(&buf[0])), uintptr(unsafe.Pointer(&n)), 0, 0) - if errNum != 0 { - return "", errNum - } - if n == 0 { // This shouldn't happen. - return "", nil - } - - var execPath string - switch runtime.GOOS { - case "openbsd": - // buf now contains **argv, with pointers to each of the C-style - // NULL terminated arguments. - var args []string - argv := uintptr(unsafe.Pointer(&buf[0])) - Loop: - for { - argp := *(**[1 << 20]byte)(unsafe.Pointer(argv)) - if argp == nil { - break - } - for i := 0; uintptr(i) < n; i++ { - // we don't want the full arguments list - if string(argp[i]) == " " { - break Loop - } - if argp[i] != 0 { - continue - } - args = append(args, string(argp[:i])) - n -= uintptr(i) - break - } - if n < unsafe.Sizeof(argv) { - break - } - argv += unsafe.Sizeof(argv) - n -= unsafe.Sizeof(argv) - } - execPath = args[0] - // There is no canonical way to get an executable path on - // OpenBSD, so check PATH in case we are called directly - if execPath[0] != '/' && execPath[0] != '.' { - execIsInPath, err := exec.LookPath(execPath) - if err == nil { - execPath = execIsInPath - } - } - default: - for i, v := range buf { - if v == 0 { - buf = buf[:i] - break - } - } - execPath = string(buf) - } - - var err error - // execPath will not be empty due to above checks. - // Try to get the absolute path if the execPath is not rooted. - if execPath[0] != '/' { - execPath, err = getAbs(execPath) - if err != nil { - return execPath, err - } - } - // For darwin KERN_PROCARGS may return the path to a symlink rather than the - // actual executable. - if runtime.GOOS == "darwin" { - if execPath, err = filepath.EvalSymlinks(execPath); err != nil { - return execPath, err - } - } - return execPath, nil -} - -func getAbs(execPath string) (string, error) { - if initCwdErr != nil { - return execPath, initCwdErr - } - // The execPath may begin with a "../" or a "./" so clean it first. - // Join the two paths, trailing and starting slashes undetermined, so use - // the generic Join function. - return filepath.Join(initCwd, filepath.Clean(execPath)), nil -} |