Re: [PATCH] elf.h: Add ELFCOMPRESS_ZSTD

[Florian Weimer <fweimer@redhat.com>]

* Fangrui Song via Libc-alpha:

> Link: https://sourceware.org/pipermail/gnu-gabi/2022q2/000498.html ("New ch_type value ELFCOMPRESS_ZSTD?")
> Link: https://groups.google.com/g/generic-abi/c/satyPkuMisk ("Add new ch_type value: ELFCOMPRESS_ZSTD")
>
> ---
>
> I wish that the macro definition can catch up the upcoming
> https://sourceware.org/glibc/wiki/Release/2.36 [1], so that
> projects can expect the value ELFCOMPRESS_ZSTD from elf.h.
> The projects may choose to define the macro themselves,
> but having the definition in an earlier release seems a good idea
> anyway, and it the glibc definition makes it clearer ELFCOMPRESS_ZSTD
> is standard and vendors can start adding support.
>
> [1]: https://sourceware.org/pipermail/libc-alpha/2022-July/140352.html
> ("Release of glibc 2.36 in 1 month! Please add blockers and desirable for release.")
>
> From https://groups.google.com/g/generic-abi/c/9OO5vhxb00Y ("Ongoing Maintenance of the gABI"),
> we should be able to define this once Cary agrees.
> ---
>  elf/elf.h | 1 +
>  1 file changed, 1 insertion(+)
>
> diff --git a/elf/elf.h b/elf/elf.h
> index 2b5c2c5fb6..f6ae2348a9 100644
> --- a/elf/elf.h
> +++ b/elf/elf.h
> @@ -505,6 +505,7 @@ typedef struct
>  
>  /* Legal values for ch_type (compression algorithm).  */
>  #define ELFCOMPRESS_ZLIB	1	   /* ZLIB/DEFLATE algorithm.  */
> +#define ELFCOMPRESS_ZSTD	2	   /* Zstandard algorithm.  */
>  #define ELFCOMPRESS_LOOS	0x60000000 /* Start of OS-specific.  */
>  #define ELFCOMPRESS_HIOS	0x6fffffff /* End of OS-specific.  */
>  #define ELFCOMPRESS_LOPROC	0x70000000 /* Start of processor-specific.  */

Could you repost this with the actual commit message you intend to use?

Thanks,
Florian