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https://git.kernel.org/pub/scm/libs/libcap/libcap.git
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bbabfb4cf4
The CGO_ENABLED=0 failure mode is discussed in: https://github.com/golang/go/issues/50113 At the present time, this only passes when the psx package is compiled CGO_ENABLED=1. The problem being that a blocking read cannot be interrupted by the CGO_ENABLED=0 build of package "psx". It does not deadlock when compiled CGO_ENABLED=1 because the psx signal wakes the reading thread up back into user space. Signed-off-by: Andrew G. Morgan <morgan@kernel.org>
26 lines
401 B
Go
26 lines
401 B
Go
package main
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import (
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"log"
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"os"
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"syscall"
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"time"
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"kernel.org/pub/linux/libs/security/libcap/psx"
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)
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const prSetKeepCaps = 8
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func main() {
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r, w, err := os.Pipe()
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if err != nil {
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log.Fatalf("failed to obtain pipe: %v", err)
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}
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data := make([]byte, 2+r.Fd())
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go r.Read(data)
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time.Sleep(500 * time.Millisecond)
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psx.Syscall3(syscall.SYS_PRCTL, prSetKeepCaps, 1, 0)
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w.Close()
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r.Close()
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}
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