On 7/11/05, Michael S. Tsirkin <[email protected]> wrote:
>
[snip]
> kernel guide to space AKA a boring list of rules
> http://www.mellanox.com/mst/boring.txt
>
[snip]
>
> 3c. * in types
> Leave space between name and * in types.
> Multiple * dont need additional space between them.
>
> struct foo **bar;
>
Don't put spaces between `*' and the name when declaring variables,
even if it's not a double pointer. int * foo; is ugly. Common
convention is int *foo;
> 3e. sizeof
> space after the operator
> sizeof a
>
I don't think that's a hard rule, there's plenty of code that does
"sizeof(type)" and not "sizeof (type)", and whitespace cleanup
patches I've done that change "sizeof (type)" into "sizeof(type)" have
generally been accepted.
[snip]
>
> 4. Indentation rules for C
> Use tabs, not spaces, for indentation. Tabs should be 8 characters wide.
>
A tab is a tab is a tab, how it's displayed is up to the editor
showing the file.
[snip]
>
> static struct foo *foo_bar(struct foo *first, struct bar *second,
> struct foobar* thirsd);
>
In this example you are not consistently placing your *'s, "struct foo
*first" vs "struct foobar* thirsd". Common practice is "struct foo
*first".
[snip]
>
> No more than one blank line in a row.
> Last (or first) line in a file is never blank.
>
Files should end with a newline. gcc will even warn (with -pedantic)
if this is not so.
"line<nl>
line"
is wrong,
"line<nl>
line<nl>
"
is right.
> Non-whitespace issues:
>
> 6. One-line statement does not need a {} block, so dont put it into one
> if (foo)
> bar;
>
Not always so, if `bar' is a macro adding {} may be safer. Also
sometimes adding {} improves readability, which is important.
> 7. Comments
> Dont use C99 // comments.
>
s/Dont/Don't/
> 9a. Integer types
> int is the default integer type.
> Use unsigned type if you perform bit operations (<<,>>,&,|,~).
> Use unsigned long if you have to fit a pointer into integer.
> long long is at least 64 bit wide on all platforms.
> char is for ASCII characters and strings.
> Use u8,u16,u32,u64 if you need an integer of a specific size.
u8,s8,u16,s16,u32,s32,u64,s64
--
Jesper Juhl <[email protected]>
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