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| author | Homu <homu@barosl.com> | 2017-02-18 02:29:01 +0900 |
|---|---|---|
| committer | Homu <homu@barosl.com> | 2017-02-18 02:29:01 +0900 |
| commit | e7629f3e91535464c5857820dfc18ac0795a6893 (patch) | |
| tree | 68a68cf56e0b7097cbb786cca2637f0e9de4607d /LICENSE | |
| parent | 54e6197b32dc3583bde9df797b620b255a75885e (diff) | |
| parent | dbd3b16508f103c9567d32ee784731e95ab40493 (diff) | |
| download | nix-e7629f3e91535464c5857820dfc18ac0795a6893.zip | |
Auto merge of #508 - aidanhs:aphs-major-minor-macros, r=posborne
Implement major/minor macros, correct mkdev
It appears that the previous `mkdev` was based on the kernel headers (https://github.com/torvalds/linux/blob/v4.7/include/linux/kdev_t.h#L6) which (I guess) is the internal kernel dev_t. Scrolling down the file you can see some bitshifting operations to do conversions.
The new implementation(s) are based on [musl](http://git.musl-libc.org/cgit/musl/tree/include/sys/sysmacros.h?id=dbbb3734d8c0176feabd6c46e2e85bbc3b8a60af) and [glibc](https://github.molgen.mpg.de/git-mirror/glibc/blob/20003c49884422da7ffbc459cdeee768a6fee07b/sysdeps/unix/sysv/linux/sys/sysmacros.h#L38), which are in agreement about how dev_t should be handled.
(as it happens I suspect we could omit the shift by 32 since I don't see that in the kernel headers, but doesn't hurt to take the conservative route and mimic the libcs)
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