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syscall: update check for UserNS support for centos 7

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Fixes #20796
Fixes #16283

Change-Id: Ib11992fbd2bc1fbb3b14ae5a6bf0da2e4c12f641
Reviewed-on: https://go-review.googlesource.com/49311
Reviewed-by: Brad Fitzpatrick <bradfitz@golang.org>
Run-TryBot: Brad Fitzpatrick <bradfitz@golang.org>
TryBot-Result: Gobot Gobot <gobot@golang.org>
This commit is contained in:
Jess Frazelle 2017-07-17 13:51:37 -04:00 committed by Brad Fitzpatrick
parent f0cf740733
commit 0d482b3824
1 changed files with 8 additions and 0 deletions
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8
src/syscall/exec_linux_test.go
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@ -57,6 +57,14 @@ func checkUserNS(t *testing.T) {
t.Skip("kernel prohibits user namespace in unprivileged process")
}
}
// On Centos 7 make sure they set the kernel parameter user_namespace=1
// See issue 16283 and 20796.
if _, err := os.Stat("/sys/module/user_namespace/parameters/enable"); err == nil {
buf, _ := ioutil.ReadFile("/sys/module/user_namespace/parameters/enabled")
if !strings.HasPrefix(string(buf), "Y") {
t.Skip("kernel doesn't support user namespaces")
}
}
// When running under the Go continuous build, skip tests for
// now when under Kubernetes. (where things are root but not quite)
// Both of these are our own environment variables.