mirror of
https://github.com/golang/go
synced 2024-11-24 22:47:58 -07:00
e9fcd6ed2b
Fixes #10607. Change-Id: Ib294cf65b07103b60f62b86b21ff2d07b25136fe Reviewed-on: https://go-review.googlesource.com/12242 Reviewed-by: Russ Cox <rsc@golang.org>
82 lines
1.6 KiB
Go
82 lines
1.6 KiB
Go
// skip
|
|
|
|
// Copyright 2015 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.
|
|
|
|
// This is built by issue10607.go with a -B option.
|
|
// Verify that we have one build-id note with the expected value.
|
|
|
|
package main
|
|
|
|
import (
|
|
"bytes"
|
|
"debug/elf"
|
|
"fmt"
|
|
"os"
|
|
)
|
|
|
|
func main() {
|
|
f, err := elf.Open("/proc/self/exe")
|
|
if err != nil {
|
|
if os.IsNotExist(err) {
|
|
return
|
|
}
|
|
fmt.Fprintln(os.Stderr, "opening /proc/self/exe:", err)
|
|
os.Exit(1)
|
|
}
|
|
|
|
c := 0
|
|
fail := false
|
|
for i, s := range f.Sections {
|
|
if s.Type != elf.SHT_NOTE {
|
|
continue
|
|
}
|
|
|
|
d, err := s.Data()
|
|
if err != nil {
|
|
fmt.Fprintln(os.Stderr, "reading data of note section %d: %v", i, err)
|
|
continue
|
|
}
|
|
|
|
for len(d) > 0 {
|
|
namesz := f.ByteOrder.Uint32(d)
|
|
descsz := f.ByteOrder.Uint32(d[4:])
|
|
typ := f.ByteOrder.Uint32(d[8:])
|
|
|
|
an := (namesz + 3) &^ 3
|
|
ad := (descsz + 3) &^ 3
|
|
|
|
if int(12+an+ad) > len(d) {
|
|
fmt.Fprintf(os.Stderr, "note section %d too short for header (%d < 12 + align(%d,4) + align(%d,4))\n", i, len(d), namesz, descsz)
|
|
break
|
|
}
|
|
|
|
// 3 == NT_GNU_BUILD_ID
|
|
if typ == 3 && namesz == 4 && bytes.Equal(d[12:16], []byte("GNU\000")) {
|
|
id := string(d[12+an:12+an+descsz])
|
|
if id == "\x12\x34\x56\x78" {
|
|
c++
|
|
} else {
|
|
fmt.Fprintf(os.Stderr, "wrong build ID data: %q\n", id)
|
|
fail = true
|
|
}
|
|
}
|
|
|
|
d = d[12+an+ad:]
|
|
}
|
|
}
|
|
|
|
if c == 0 {
|
|
fmt.Fprintln(os.Stderr, "no build-id note")
|
|
fail = true
|
|
} else if c > 1 {
|
|
fmt.Fprintln(os.Stderr, c, "build-id notes")
|
|
fail = true
|
|
}
|
|
|
|
if fail {
|
|
os.Exit(1)
|
|
}
|
|
}
|