Re: Writing from the kernel
Re: Writing from the kernel
- Subject: Re: Writing from the kernel
- From: Terry Lambert <email@hidden>
- Date: Tue, 20 Nov 2007 15:01:41 -0800
Of course, that's supposed to be "prototype parameters either", but my
iPhone ate my homework. 8^).
-- Terry
On Nov 20, 2007, at 2:58 PM, Terry Lambert <email@hidden> wrote:
Actually both UNIX/POSIX and ANSI/ISO C standards require that
prototypeseither be omitted or in the implementation name space --
have underscore prefixes so if a user e.g. does:
#define path "mypath"
and then #includes a system header to get e.g.:
Int open(const char *path, int flags, ...);
In scope, path in the parameter list doesn't change into something
else that's syntactically incorrect (or worse, syntactically correct
but wrong).
Unfortunately, there's user code out there that puts variables and
definitions into that space anyway, so we just try to avoid it all.
-- Terry
On Nov 20, 2007, at 8:01 AM, Quinn <email@hidden> wrote:
At 9:54 -0600 20/11/07, Kynan Shook wrote:
Now, is there any documentation on these interfaces? A google on
vnode_open returns very few results...
Not really )-: [1] And given the BSD habit of not including formal
parameter names in prototypes [2], your only real option is to look
at the Darwin source.
S+E
--
Quinn "The Eskimo!" <http://www.apple.com/developer/
>
Apple Developer Relations, Developer Technical Support, Core OS/
Hardware
[1] The bug tracking this is <rdar://problem/3524590>.
[2] Alas, there are fairly good technical reasons for this.
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