Don't exec uname for node attribute kernel.version #2380
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Previously with client fingerprinting, sys/exec's Command function was being used to execute `uname -r` and the return string processed into the kernel.version node attribute. This change uses gopsutil/host KernelVersion function instead. This means we can drop the os/exec, strings and fmt imports... and not execute an external binary. Signed-off-by: Dave Walker (Daviey) <email@daviey.com>
client/fingerprint/host.go
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| @@ -38,11 +35,7 @@ func (f *HostFingerprint) Fingerprint(cfg *config.Config, node *structs.Node) (b | |||
| node.Attributes["kernel.version"] = "" | |||
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| if runtime.GOOS != "windows" { | |||
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KernelVersion will be an empty string on platforms without support so you can remove this guard and set kernel.version above directly.
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OK, i left it there because I assumed it was not an interesting value on Windows, but happy enable it.
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Yeah, I doubt it will ever be interesting on Windows but the fewer runtime.GOOS checks we have the happier I am! :)
Who knows, maybe someday gopsutils will populate a meaningful value for Windows.
Previously, this value was guarded against running on Windows because it called the `uname` command which is unlikely to be there. This change now sets the value from gopsutil, which might well be an empty string. Signed-off-by: Dave Walker (Daviey) <email@daviey.com>
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I'm going to lock this pull request because it has been closed for 120 days ⏳. This helps our maintainers find and focus on the active contributions. |
Previously with client fingerprinting, sys/exec's Command
function was being used to execute
uname -rand the returnstring processed into the kernel.version node attribute.
This change uses gopsutil/host KernelVersion function
instead. This means we can drop the os/exec, strings and
fmt imports... and not execute an external binary.
Signed-off-by: Dave Walker (Daviey) email@daviey.com