munmap.2: Add STANDARDS and note about portability
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Authored by emaste on Jan 16 2025, 1:13 PM.

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brooks

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rG724e383bd4c4: munmap.2: Add STANDARDS and note about portability

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rG FreeBSD src repository

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emaste requested review of this revision.Jan 16 2025, 1:13 PM

emaste created this revision.

Is the same true of len?

This revision is now accepted and ready to land.Jan 16 2025, 5:36 PM

2004 has:

The munmap() function shall fail if:

[EINVAL]
    Addresses in the range [addr,addr+len) are outside the valid range for the address space of a process.
[EINVAL]
    The len argument is 0.
[EINVAL]
    The addr argument is not a multiple of the page size as returned by sysconf().

Unaligned addr moved from shall to may in 2008 AFAICT. I don't have a good enough handle on the variety of systems to know if any require aligned len, but AFAICT POSIX hasn't specified that.

Closed by commit rG724e383bd4c4: munmap.2: Add STANDARDS and note about portability (authored by emaste). · Explain WhyJan 16 2025, 5:53 PM

This revision was automatically updated to reflect the committed changes.

emaste added a commit: rG724e383bd4c4: munmap.2: Add STANDARDS and note about portability.

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imp added inline comments.Jan 16 2025, 6:26 PM