On Thu, Mar 14, 2019 at 02:57:08AM +0100, Marek Marczykowski-Górecki wrote:
> Mirror behaviour of elf loader in libxc: first look for Xen notes in
> PT_NOTE segment, then in SHT_NOTE section and only then fallback to
> a section with __xen_guest name.
> This fixes loading PV kernels that Xen note have outside of PT_NOTE.
> While this may be result of a buggy linker script, loading such kernel
> directly works fine, so make it work with grub too.
> Specifically, this applies to binaries built from Unikraft.
>
> Signed-off-by: Marek Marczykowski-Górecki <marma...@invisiblethingslab.com>
I treat this as a fix, so, Reviewed-by: Daniel Kiper <daniel.ki...@oracle.com>
However, ...
> ---
> grub-core/loader/i386/xen_fileXX.c | 15 +++++++++++++++
> 1 file changed, 15 insertions(+)
>
> diff --git a/grub-core/loader/i386/xen_fileXX.c
> b/grub-core/loader/i386/xen_fileXX.c
> index fb66e66fe..6af6cc0da 100644
> --- a/grub-core/loader/i386/xen_fileXX.c
> +++ b/grub-core/loader/i386/xen_fileXX.c
> @@ -344,6 +344,21 @@ grub_xen_get_infoXX (grub_elf_t elf, struct
> grub_xen_file_info *xi)
> s = (Elf_Shdr *) ((char *) s0 + elf->ehdr.ehdrXX.e_shstrndx * shentsize);
> stroff = s->sh_offset;
>
> + for (s = s0; s < (Elf_Shdr *) ((char *) s0 + shnum * shentsize);
> + s = (Elf_Shdr *) ((char *) s + shentsize))
> + {
> + if (s->sh_type == SHT_NOTE) {
Curly bracket is in wrong place...
> + err = parse_note (elf, xi, s->sh_offset, s->sh_size);
> + if (err)
> + goto cleanup;
> + }
... and this is also in wrong place.
> + }
> +
> + if (xi->has_note) {
> + err = GRUB_ERR_NONE;
> + goto cleanup;
> + }
Ditto. Next time please double check that you have correct formatting.
Now I will fix it before the push. If there are no objections then it
will happen at the beginning of next week.
Daniel
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