Re: [PATCH] fsync.2: no writability requirements, must operate on directories

[Sam James <sam@gentoo.org>]

наб <nabijaczleweli@nabijaczleweli.xyz> writes:

> [[PGP Signed Part:Undecided]]
> POSIX has for a long time implied that directories are fsyncable,
> and since Issue 8 explicitly specifies directory syncing semantics:
>   https://www.austingroupbugs.net/view.php?id=672
>
> Simultaneously, directories being unopenable for writing is a
> Longest-Standing UNIX Semantic, present in the UNIX Programmer's Manual
> under directory (V), and has always been enshrined in the standards.
>
> Kill the FUD that says that some UNIXes require the fd to be writable:
> they /must not/ and this confuses users:
>   https://101010.pl/@eater@cijber.social/110824211348995583

Must not, or need not be?

>
> Signed-off-by: Ahelenia Ziemiańska <nabijaczleweli@nabijaczleweli.xyz>
> ---
>  man2/fsync.2 | 6 ------
>  1 file changed, 6 deletions(-)
>
> diff --git a/man2/fsync.2 b/man2/fsync.2
> index 1043e6a1b..9ced40b28 100644
> --- a/man2/fsync.2
> +++ b/man2/fsync.2
> @@ -155,12 +155,6 @@ .SH VERSIONS
>  .\" POSIX.1-2001: It shall be defined to -1 or 0 or 200112L.
>  .\" -1: unavailable, 0: ask using sysconf().
>  .\" glibc defines them to 1.
> -.PP
> -On some UNIX systems (but not Linux),
> -.I fd
> -must be a
> -.I writable
> -file descriptor.
>  .SH STANDARDS
>  POSIX.1-2008.
>  .SH HISTORY