commit 17f630750e9e5a40872d8c8c3a48622ed9244d53
author Yann Ylavic <ylavic@apache.org> Tue Mar 02 00:37:18 2021 +0000
committer Yann Ylavic <ylavic@apache.org> Tue Mar 02 00:37:18 2021 +0000
tree a9497308b9bb36677fbb9827617ff237287d6c8c
parent 58126550800e0fd66790d216394e61772f329e6c

Align apr_mmap()ing offset to a page boundary.  PR 65158.

This is requirement for unix systems, and otherwise can cause failures or
undefined behaviour with some filesystems.

Add apr_mmap_t->poffset on unixes to track the offset to the previous page,
relative to the user requested/actual offset. This allows ->mm and ->size to
still point to the actual data, while munmap() still deletes the full range
from the start of the page.

Tests updated accordingly.


git-svn-id: https://svn.apache.org/repos/asf/apr/apr/trunk@1887060 13f79535-47bb-0310-9956-ffa450edef68