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| author | Yuqian Yang <crupest@crupest.life> | 2025-03-05 00:21:48 +0800 |
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| committer | Yuqian Yang <crupest@crupest.life> | 2025-03-27 01:33:06 +0800 |
| commit | 1a9e227917248d449b7dee394c1cba081bc249be (patch) | |
| tree | a2423538bed045880c0898cae2b7176de2305b14 /www/content/posts/c-func-ext.md | |
| parent | 473e71165e47f029d1a578856ab936dd6f4bf9ed (diff) | |
| download | crupest-1a9e227917248d449b7dee394c1cba081bc249be.tar.gz crupest-1a9e227917248d449b7dee394c1cba081bc249be.tar.bz2 crupest-1a9e227917248d449b7dee394c1cba081bc249be.zip | |
feat(www): add post systemd-nspawn.
Diffstat (limited to 'www/content/posts/c-func-ext.md')
| -rw-r--r-- | www/content/posts/c-func-ext.md | 23 |
1 files changed, 23 insertions, 0 deletions
diff --git a/www/content/posts/c-func-ext.md b/www/content/posts/c-func-ext.md new file mode 100644 index 0000000..f5ab8fb --- /dev/null +++ b/www/content/posts/c-func-ext.md @@ -0,0 +1,23 @@ +--- +title: "Libc/POSIX Function \"Extensions\"" +date: 2025-03-04T13:40:33+08:00 +lastmod: 2025-03-04T13:40:33+08:00 +categories: coding +tags: + - c + - posix +--- + +Recently, I've been working on porting libraries to GNU/Hurd. The maintainers of GNU/Hurd +have a strong belief that [`*_MAX` macros on POSIX system interfaces](https://pubs.opengroup.org/onlinepubs/9699919799.2008edition/nframe.html) +are very evil things. This is indeed true as a lot of (old) libraries relying on those macros +to determine the buffer size. In modern programming world, it is definitely a bad +idea to use fixed values for buffer sizes without considering possible overflow, unless +you are certain that size is sufficient. + +When you get rid of some old things, you will always meet compatibility problems. In these +case, old source codes using these macros just do not compile now. So here are some + +<!--more--> + + |