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cmd/go: if unable to initialize cache, just disable it

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Fixes #23638

Change-Id: I51967290448217f371fc7aba9259918ee9857143
Reviewed-on: https://go-review.googlesource.com/91097
Run-TryBot: Ian Lance Taylor <iant@golang.org>
TryBot-Result: Gobot Gobot <gobot@golang.org>
Reviewed-by: Russ Cox <rsc@golang.org>
This commit is contained in:
Ian Lance Taylor 2018-01-31 10:02:01 -08:00
parent ebe38b867c
commit 1915030318
2 changed files with 25 additions and 3 deletions
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20
src/cmd/go/go_test.go
View file

@ -5373,6 +5373,26 @@ func TestTestCacheInputs(t *testing.T) {
}
}
func TestNoCache(t *testing.T) {
switch runtime.GOOS {
case "windows":
t.Skipf("no unwritable directories on %s", runtime.GOOS)
}
if os.Getuid() == 0 {
t.Skip("skipping test because running as root")
}
tg := testgo(t)
defer tg.cleanup()
tg.parallel()
tg.tempFile("triv.go", `package main; func main() {}`)
tg.must(os.MkdirAll(tg.path("unwritable"), 0555))
tg.setenv("HOME", tg.path(filepath.Join("unwritable", "home")))
tg.unsetenv("GOCACHE")
tg.run("build", "-o", tg.path("triv"), tg.path("triv.go"))
tg.grepStderr("disabling cache", "did not disable cache")
}
func TestTestVet(t *testing.T) {
tooSlow(t)
tg := testgo(t)

8
src/cmd/go/internal/cache/default.go vendored
View file

@ -5,7 +5,7 @@
package cache
import (
"cmd/go/internal/base"
"fmt"
"io/ioutil"
"os"
"path/filepath"
@ -40,7 +40,8 @@ func initDefaultCache() {
return
}
if err := os.MkdirAll(dir, 0777); err != nil {
base.Fatalf("initializing cache in $GOCACHE: %s", err)
fmt.Fprintf(os.Stderr, "go: disabling cache (%s) due to initialization failure: %s\n", dir, err)
return
}
if _, err := os.Stat(filepath.Join(dir, "README")); err != nil {
// Best effort.
@ -49,7 +50,8 @@ func initDefaultCache() {
c, err := Open(dir)
if err != nil {
base.Fatalf("initializing cache in $GOCACHE: %s", err)
fmt.Fprintf(os.Stderr, "go: disabling cache (%s) due to initialization failure: %s\n", dir, err)
return
}
defaultCache = c
}