linux-kernel - Re: [PATCH 06/20] kbuild: scripts/install.sh: handle compressed/uncompressed kernel images

lists.openwall.net		lists / announce owl-users owl-dev john-users john-dev passwdqc-users yescrypt popa3d-users / oss-security kernel-hardening musl sabotage tlsify passwords / crypt-dev xvendor / Bugtraq Full-Disclosure linux-kernel linux-netdev linux-ext4 linux-hardening linux-cve-announce PHC
Open Source and information security mailing list archives

Hash Suite for Android: free password hash cracker in your pocket

[<prev] [next>] [<thread-prev] [thread-next>] [day] [month] [year] [list]

Date:   Wed, 7 Apr 2021 20:04:44 +0900
From:   Masahiro Yamada <masahiroy@...nel.org>
To:     Greg Kroah-Hartman <gregkh@...uxfoundation.org>
Cc:     Michal Marek <michal.lkml@...kovi.net>,
        Linux Kbuild mailing list <linux-kbuild@...r.kernel.org>,
        linux-arch <linux-arch@...r.kernel.org>,
        Linux Kernel Mailing List <linux-kernel@...r.kernel.org>
Subject: Re: [PATCH 06/20] kbuild: scripts/install.sh: handle
 compressed/uncompressed kernel images

On Wed, Apr 7, 2021 at 2:34 PM Greg Kroah-Hartman
<gregkh@...uxfoundation.org> wrote:
>
> For x86, the default kernel image is compressed, but other architectures
> allowed both compressed and uncompressed kernel images to be built.  Add
> a test to detect which one this is, and either name the output file
> "vmlinuz" for a compressed image, or "vmlinux" for an uncompressed
> image.
>
> For x86 this change is a no-op, but other architectures depend on this.
>
> Signed-off-by: Greg Kroah-Hartman <gregkh@...uxfoundation.org>
> ---
>  scripts/install.sh | 14 ++++++++++++--
>  1 file changed, 12 insertions(+), 2 deletions(-)
>
> diff --git a/scripts/install.sh b/scripts/install.sh
> index 2adcb993efa2..72dc4c81013e 100644
> --- a/scripts/install.sh
> +++ b/scripts/install.sh
> @@ -49,8 +49,18 @@ verify "$3"
>  if [ -x ~/bin/"${INSTALLKERNEL}" ]; then exec ~/bin/"${INSTALLKERNEL}" "$@"; fi
>  if [ -x /sbin/"${INSTALLKERNEL}" ]; then exec /sbin/"${INSTALLKERNEL}" "$@"; fi
>
> -# Default install - same as make zlilo
> -install "$2" "$4"/vmlinuz
> +base=$(basename "$2")
> +if [ "$base" = "bzImage" ]; then
> +       # Compressed install
> +       echo "Installing compressed kernel"



After applying this series, I think the excessive
"Installing ..." messages are a bit annoying.


masahiro@...ver:~/workspace/linux-kbuild$ make INSTALL_PATH=~/foo install
sh ./scripts/install.sh 5.12.0-rc3+ arch/x86/boot/bzImage \
System.map "/home/masahiro/foo"
Installing compressed kernel
installing 'arch/x86/boot/bzImage' to '/home/masahiro/foo/vmlinuz'
installing 'System.map' to '/home/masahiro/foo/System.map'
Cannot find LILO, ensure your bootloader knows of the new kernel image.



Since 03/20 added a new log in the 'install' function,
can we drop this "Installing compressed kernel" message?




> +       base=vmlinuz
> +else
> +       # Normal install
> +       echo "Installing normal kernel"


Same here.

This message tends to be wrong.
For example, arch/arm/boot/uImage is gzip-compressed,
but it says "Installing normal kernel".







> +       base=vmlinux
> +fi
> +
> +install "$2" "$4"/"$base"
>  install "$3" "$4"/System.map
>  sync
>
> --
> 2.31.1
>


--
Best Regards

Masahiro Yamada