oss-sec mailing list archives
Re: [patch] proc.5: tell how to parse /proc/*/stat correctly
From: Shawn Webb <shawn.webb () hardenedbsd org>
Date: Wed, 28 Dec 2022 10:31:37 -0500
On Wed, Dec 28, 2022 at 10:24:58AM -0500, Shawn Webb wrote:
On Tue, Dec 27, 2022 at 04:44:49PM -0800, Lyndon Nerenberg (VE7TFX/VE6BBM) wrote:Dominique Martinet writes:But, really, I just don't see how this can practically be said to be parsable...In its current form it never will be. The solution is to place this variable-length field last. Then you can "cut -d ' ' -f 51-" to get the command+args part (assuming I counted all those fields correctly ...) Of course, this breaks backwards compatability.It would also break forwards compatibility in the case new fields needed to be added. The only solution would be a libxo-style feature wherein a machine-parseable format is exposed by virtue of a file extension. Examples: 1. /proc/pid/stats.json 2. /proc/pid/stats.xml 3. /proc/pid/stats.yaml_shouldnt_be_a_thing
To expand upon this idea, lets define an example json file: { "schemaver": "20221228001", "name": "cat", "state": { "raw": "R", "intval": 1, "Pretty": "(Running)", }, "tgid": 5452, "pid": 5452, "ppid": 743, "uid": { "real": 501, "effective": 501, "saved_set": 501, "fs": 501 } } And so on. -- Shawn Webb Cofounder / Security Engineer HardenedBSD https://git.hardenedbsd.org/hardenedbsd/pubkeys/-/raw/master/Shawn_Webb/03A4CBEBB82EA5A67D9F3853FF2E67A277F8E1FA.pub.asc
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Current thread:
- [patch] proc.5: tell how to parse /proc/*/stat correctly Alexey Dobriyan (Dec 22)
- Re: [patch] proc.5: tell how to parse /proc/*/stat correctly Dominique Martinet (Dec 22)
- Re: [patch] proc.5: tell how to parse /proc/*/stat correctly Solar Designer (Dec 22)
- Re: [patch] proc.5: tell how to parse /proc/*/stat correctly Dominique Martinet (Dec 22)
- Re: [patch] proc.5: tell how to parse /proc/*/stat correctly Jan Engelhardt (Dec 22)
- Re: [patch] proc.5: tell how to parse /proc/*/stat correctly Lyndon Nerenberg (VE7TFX/VE6BBM) (Dec 28)
- Re: [patch] proc.5: tell how to parse /proc/*/stat correctly Shawn Webb (Dec 28)
- Re: [patch] proc.5: tell how to parse /proc/*/stat correctly Shawn Webb (Dec 28)
- Re: [patch] proc.5: tell how to parse /proc/*/stat correctly Demi Marie Obenour (Dec 28)
- Re: [patch] proc.5: tell how to parse /proc/*/stat correctly Jan Engelhardt (Dec 28)
- Re: [patch] proc.5: tell how to parse /proc/*/stat correctly Shawn Webb (Dec 28)
- Re: [patch] proc.5: tell how to parse /proc/*/stat correctly Demi Marie Obenour (Dec 28)
- Re: [patch] proc.5: tell how to parse /proc/*/stat correctly John Helmert III (Dec 28)
- Re: [patch] proc.5: tell how to parse /proc/*/stat correctly Shawn Webb (Dec 28)
- Re: [patch] proc.5: tell how to parse /proc/*/stat correctly Alejandro Colomar (Dec 28)
- Re: [patch] proc.5: tell how to parse /proc/*/stat correctly Theodore Ts'o (Dec 29)
- Re: [patch] proc.5: tell how to parse /proc/*/stat correctly Demi Marie Obenour (Dec 29)
- Re: [patch] proc.5: tell how to parse /proc/*/stat correctly Solar Designer (Dec 22)
- Re: [patch] proc.5: tell how to parse /proc/*/stat correctly Dominique Martinet (Dec 22)
- Re: [patch] proc.5: tell how to parse /proc/*/stat correctly Alan Coopersmith (Dec 29)