Re: [PATCH] getprotoent.3: ATTRIBUTES: Note functions that aren't thread-safe

["Michael Kerrisk (man-pages)" <mtk.manpages-Re5JQEeQqe8AvxtiuMwx3w@public.gmane.org>]

On 06/03/2015 12:16 PM, Zeng Linggang wrote:
> The marking matches glibc marking.
> markings of functions in glibc are:
> - getprotoent:      MT-Unsafe race:protoent race:protoentbuf locale
> 
> - getprotobyname:   MT-Unsafe race:protobyname locale
> 
> - getprotobynumber: MT-Unsafe race:protobynumber locale
> 
> - setprotoent:      MT-Unsafe race:protoent locale
> - endprotoent:      MT-Unsafe race:protoent locale

Thanks, Zeng Linggang. Applied.

Cheers,

Michael


> Signed-off-by: Zeng Linggang <zenglg.jy-BthXqXjhjHXQFUHtdCDX3A@public.gmane.org>
> ---
>  man3/getprotoent.3 | 51 +++++++++++++++++++++++++++++++++++++++++++++++++++
>  1 file changed, 51 insertions(+)
> 
> diff --git a/man3/getprotoent.3 b/man3/getprotoent.3
> index d41e926..56fac15 100644
> --- a/man3/getprotoent.3
> +++ b/man3/getprotoent.3
> @@ -137,6 +137,57 @@ error occurs or the end of the file is reached.
>  .I /etc/protocols
>  protocol database file
>  .PD
> +.SH ATTRIBUTES
> +For an explanation of the terms used in this section, see
> +.BR attributes (7).
> +.TS
> +allbox;
> +lbw18 lb lbw28
> +l l l.
> +Interface	Attribute	Value
> +T{
> +.BR getprotoent ()
> +T}	Thread safety	T{
> +MT-Unsafe race:protoent
> +.br
> +race:protoentbuf locale
> +T}
> +T{
> +.BR getprotobyname ()
> +T}	Thread safety	T{
> +MT-Unsafe race:protobyname
> +.br
> +locale
> +T}
> +T{
> +.BR getprotobynumber ()
> +T}	Thread safety	T{
> +MT-Unsafe race:protobynumber
> +.br
> +locale
> +T}
> +T{
> +.BR setprotoent (),
> +.br
> +.BR endprotoent ()
> +T}	Thread safety	T{
> +MT-Unsafe race:protoent
> +.br
> +locale
> +T}
> +.TE
> +
> +In the above table,
> +.I protoent
> +in
> +.I race:protoent
> +signifies that if any of the functions
> +.BR setprotoent (3),
> +.BR getprotoent (3),
> +or
> +.BR endprotoent (3)
> +are used in parallel in different threads of a program,
> +then data races could occur.
>  .SH CONFORMING TO
>  4.3BSD, POSIX.1-2001.
>  .SH SEE ALSO
> 


-- 
Michael Kerrisk
Linux man-pages maintainer; http://www.kernel.org/doc/man-pages/
Linux/UNIX System Programming Training: http://man7.org/training/
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