Re: [PATCH] getsockname.2: Use restrict in prototypes

["Alejandro Colomar (man-pages)" <alx.manpages@gmail.com>]

On 2/3/21 10:25 PM, Alejandro Colomar wrote:
> POSIX specifies that the 2nd and 3rd parameters to getsockname()
> shall be 'restrict'.  Glibc uses 'restrict' too.
> Let's use it here too.
> 
> ......
> 
> .../glibc$ grep_syscall_wrapper getsockname
> socket/sys/socket.h:116:
> extern int getsockname (int __fd, __SOCKADDR_ARG __addr,
> 			socklen_t *__restrict __len) __THROW;
> .../glibc$ grep -rn '# *define __SOCKADDR_ARG'
> socket/sys/socket.h:58:
>  # define __SOCKADDR_ARG		struct sockaddr *__restrict
> .../glibc$
> 
> function grep_syscall_wrapper()
> {
> 	if ! [ -v 1 ]; then
> 		>&2 echo "Usage: ${FUNCNAME[0]} <syscall>";
> 		return ${EX_USAGE};
> 	fi
> 
> 	find * -type f \
> 	|grep '\.h$' \
> 	|sort -V \
> 	|xargs pcregrep -Mn \
> 	  "(?s)^[^\s#][\w\s]+\s+\**${1}\s*\([\w\s()[\]*,]*?(...)?\)[\w\s()]*;" \
> 	|sed -E 's/^[^:]+:[0-9]+:/&\n/';
> }
> 
> Signed-off-by: Alejandro Colomar <alx.manpages@gmail.com>

Hi Michael,

I forgot to actually add restrict to one of the parameters.
Wait for v2 :)

Cheers,

Alex

> ---
>  man2/getsockname.2 | 4 ++--
>  1 file changed, 2 insertions(+), 2 deletions(-)
> 
> diff --git a/man2/getsockname.2 b/man2/getsockname.2
> index 55db4b84c..034c9d4ac 100644
> --- a/man2/getsockname.2
> +++ b/man2/getsockname.2
> @@ -44,8 +44,8 @@ getsockname \- get socket name
>  .nf
>  .B #include <sys/socket.h>
>  .PP
> -.BI "int getsockname(int " sockfd ", struct sockaddr *" addr \
> -", socklen_t *" addrlen );
> +.BI "int getsockname(int " sockfd ", struct sockaddr *" addr ,
> +.BI "                socklen_t *restrict " addrlen );
>  .fi
>  .SH DESCRIPTION
>  .BR getsockname ()
> 


-- 
Alejandro Colomar
Linux man-pages comaintainer; https://www.kernel.org/doc/man-pages/
http://www.alejandro-colomar.es/