From: Justin Cormack <justin@specialbusservice.com>
To: musl@lists.openwall.com
Subject: Re: capset() capget() syscalls
Date: Wed, 5 Sep 2012 18:01:11 +0100 [thread overview]
Message-ID: <CAK4o1WzWsdGqsvuy5J1kg1=WzeG_yM7-PPbx+1x4yX3XgwKCXA@mail.gmail.com> (raw)
In-Reply-To: <20120905142441.GT27715@brightrain.aerifal.cx>
On Wed, Sep 5, 2012 at 3:24 PM, Rich Felker <dalias@aerifal.cx> wrote:
> There are a lot of direct-kernel-interface-usage situations that
> require pulling in the associated kernel headers, such as fb.h, kb.h,
> etc. One issue is that the kernel headers presumably lack prototypes
> for the functions, but the most portable way to do what you're doing
> is probably going to be:
>
> #include <linux/capabilities.h>
> #include <sys/syscall.h>
> ...
> syscall(SYS_capset, x, y);
>
> At least this will work on every Linux libc I know of, and it's
> hard for them to break it.
>
> If you really want to see the header in musl, I'm not opposed to
> further consideration of the matter, but right now I don't think
> adding it promotes portable software; rather it seems to promote
> writing software that works on musl and breaks on glibc.
It is an unclear situation. Glibc seems inconsistent.
Personally I think Musl should provide the kernel structures and
syscalls for everything that is not deprecated.
I was looking at providing patches for a bunch of missing syscalls
(which are in glibc).
I agree with Linus, provide all the headers in libc. I tried to write
some code to include all syscalls and constants needed for them, and
as far as I can see it is impossible with glibc due to conflicts. If
anyone has a set of includes that works let me know....
Justin
next prev parent reply other threads:[~2012-09-05 17:01 UTC|newest]
Thread overview: 43+ messages / expand[flat|nested] mbox.gz Atom feed top
2012-08-27 11:51 igmar
2012-09-05 6:19 ` Rich Felker
2012-09-05 9:28 ` Igmar Palsenberg
2012-09-05 14:24 ` Rich Felker
2012-09-05 17:01 ` Justin Cormack [this message]
2012-09-06 3:04 ` Rich Felker
2012-09-06 3:10 ` John Spencer
2012-09-06 3:20 ` Rich Felker
2012-09-06 3:28 ` Kurt H Maier
2012-09-06 3:41 ` Rich Felker
2012-09-06 4:41 ` Kurt H Maier
2012-09-06 8:22 ` Justin Cormack
2012-09-06 9:28 ` Szabolcs Nagy
2012-09-06 14:23 ` Rich Felker
2012-09-07 4:56 ` Rich Felker
2012-09-08 16:02 ` Justin Cormack
2012-09-08 22:14 ` Rich Felker
2012-09-09 20:04 ` Justin Cormack
2012-09-09 20:14 ` Rich Felker
2012-09-09 21:13 ` James Cloos
2012-09-09 21:55 ` Rich Felker
2012-09-09 22:12 ` Justin Cormack
2012-09-09 22:29 ` Rich Felker
2012-09-09 22:37 ` Justin Cormack
2012-09-10 15:07 ` James Cloos
2012-09-08 21:25 ` Justin Cormack
2012-09-08 22:15 ` Rich Felker
2012-09-08 23:56 ` Rich Felker
2012-09-09 0:21 ` Rich Felker
2012-09-09 8:21 ` Justin Cormack
2012-09-09 19:40 ` Justin Cormack
2012-09-09 21:02 ` Rich Felker
2012-09-09 21:07 ` Justin Cormack
2012-09-09 21:23 ` Justin Cormack
2012-09-09 21:31 ` Justin Cormack
2012-09-09 21:58 ` Rich Felker
2012-09-09 22:14 ` Justin Cormack
2012-09-15 1:54 ` Rich Felker
2012-09-16 14:13 ` Justin Cormack
2012-09-17 2:27 ` Rich Felker
2012-09-06 11:47 ` Igmar Palsenberg
2012-09-06 11:36 ` Igmar Palsenberg
2012-09-06 14:11 ` Rich Felker
Reply instructions:
You may reply publicly to this message via plain-text email
using any one of the following methods:
* Save the following mbox file, import it into your mail client,
and reply-to-all from there: mbox
Avoid top-posting and favor interleaved quoting:
https://en.wikipedia.org/wiki/Posting_style#Interleaved_style
* Reply using the --to, --cc, and --in-reply-to
switches of git-send-email(1):
git send-email \
--in-reply-to='CAK4o1WzWsdGqsvuy5J1kg1=WzeG_yM7-PPbx+1x4yX3XgwKCXA@mail.gmail.com' \
--to=justin@specialbusservice.com \
--cc=musl@lists.openwall.com \
/path/to/YOUR_REPLY
https://kernel.org/pub/software/scm/git/docs/git-send-email.html
* If your mail client supports setting the In-Reply-To header
via mailto: links, try the mailto: link
Be sure your reply has a Subject: header at the top and a blank line
before the message body.
Code repositories for project(s) associated with this public inbox
https://git.vuxu.org/mirror/musl/
This is a public inbox, see mirroring instructions
for how to clone and mirror all data and code used for this inbox;
as well as URLs for NNTP newsgroup(s).