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Apply: fix ambient caps error handling #3

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Jul 22, 2024
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13 changes: 8 additions & 5 deletions capability_linux.go
Original file line number Diff line number Diff line change
Expand Up @@ -358,11 +358,14 @@ func (c *capsV3) Apply(kind CapType) (err error) {
if c.Get(AMBIENT, i) {
action = pr_CAP_AMBIENT_RAISE
}
err := prctl(pr_CAP_AMBIENT, action, uintptr(i), 0, 0)
// Ignore EINVAL as not supported on kernels before 4.3
if errno, ok := err.(syscall.Errno); ok && errno == syscall.EINVAL {
err = nil
continue
err = prctl(pr_CAP_AMBIENT, action, uintptr(i), 0, 0)
if err != nil {
// Ignore EINVAL as not supported on kernels before 4.3
if errno, ok := err.(syscall.Errno); ok && errno == syscall.EINVAL {
err = nil
continue
}
return
}
}
}
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