On Wed, Jan 06, 2016 at 02:09:43PM +0100, Johannes Schindelin wrote:

> It was pointed out by Yaroslav Halchenko that the file containing the
> commit message is writable only by the owner, which means that we have
> to rewrite it from scratch in a shared repository.
> [...]
> diff --git a/wrapper.c b/wrapper.c
> index b43d437..29a45d2 100644
> --- a/wrapper.c
> +++ b/wrapper.c
> @@ -391,6 +391,19 @@ FILE *xfdopen(int fd, const char *mode)
>       return stream;
>  }
>  
> +FILE *fopen_for_writing(const char *path)
> +{
> +     FILE *ret = fopen(path, "w");
> +
> +     if (!ret && errno == EPERM) {
> +             if (!unlink(path))
> +                     ret = fopen(path, "w");
> +             else
> +                     errno = EPERM;
> +     }
> +     return ret;
> +}

Thanks, this looks good to me. Having seen the implementation, it really
is just "try harder to fopen()".  I guess calling it "fopen_me_harder()"
would be too obscure. :)

-Peff
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