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RFE: implement range checks #94

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topimiettinen opened this issue Sep 10, 2017 · 1 comment · May be fixed by #95
Open

RFE: implement range checks #94

topimiettinen opened this issue Sep 10, 2017 · 1 comment · May be fixed by #95
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@pcmoore
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enhancement priority/medium
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v2.7.0

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@topimiettinen
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Please add support for checking (preferrably multiple and masked) range(s) of values. For example in systemd (systemd/systemd#6256) we'd like to construct a filter which only allows personality(2) with following use cases:

personality(0xffffffff) to query personality
personality(PER_LINUX) (or personality(PER_LINUX32)) for effectively no change to current personality

while blocking all other cases.

This could be implemented with new (optionally masked and/or negated) compare operations with multiple ranges complemented with a negative check: SCMP_CMP_MASKED_INRANGE, SCMP_CMP_MASKED_NOTINRANGE, SCMP_CMP_INRANGE and SCMP_CMP_NOTINRANGE.

#44 may be related.
This was referenced Sep 10, 2017
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@pcmoore pcmoore self-assigned this Sep 11, 2017
topimiettinen added a commit to topimiettinen/libseccomp that referenced this issue Sep 17, 2017
@topimiettinen
Range ops
363dfca 
Add ops for checking whether arguments are in a specified range,
optionally negated and/or with mask: SCMP_CMP_{MASKED_}{NOT_}IN_RANGE.

Closes: seccomp#94

Signed-off-by: Topi Miettinen <toiwoton@gmail.com>
@topimiettinen topimiettinen linked a pull request Sep 17, 2017 that will close this issue
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@pcmoore pcmoore added this to the v2.5 milestone Jan 28, 2018
@pcmoore pcmoore modified the milestones: v2.5, v2.6 Aug 26, 2019
This was referenced Aug 19, 2020
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@pcmoore
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pcmoore commented Jan 7, 2024

In an effort to get v2.6.0 out sooner than later, I'm going to suggest we push this out to v2.7.0; if you have any concerns or objections please drop a comment.

@pcmoore pcmoore modified the milestones: v2.6.0, v2.7.0 Jan 7, 2024
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enhancement priority/medium
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RFE: syscall argument range checking ops topimiettinen/libseccomp
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@pcmoore @topimiettinen