Re: [PATCH v2] initramfs: print error and shell out for unsupported content

From: Andrew Morton
Date: Fri Mar 21 2014 - 17:03:17 EST


On Thu, 20 Mar 2014 23:00:45 +0100 Alexander Holler <holler@xxxxxxxxxxxxx> wrote:

> The initramfs generation is broken for file and directory names which contain
> colons or spaces. Print an error and don't try to continue.
>
> Tests:
>
> cd linux
> make defconfig
> echo 'CONFIG_BLK_DEV_INITRD=y' >> .config
> echo 'CONFIG_INITRAMFS_ROOT_UID=0' >>.config
> echo 'CONFIG_INITRAMFS_ROOT_GID=0' >>.config
> echo 'CONFIG_INITRAMFS_COMPRESSION_NONE=y' >>.config
> echo 'CONFIG_INITRAMFS_SOURCE="/tmp/bugroot"' >>.config
>
> Problem with colons:
>
> mkdir -p /tmp/bugroot/a:b
> make -j4 bzImage # no error
> make bzImage # try again, oops
>
> Problem with spaces:
>
> mkdir -p /tmp/bugroot/a\ b
> make -j4 bzImage # no error
> zcat usr/initramfs_data.cpio.gz | cpio --extract --list # oops, no content
>
> ...
>
> --- a/scripts/gen_initramfs_list.sh
> +++ b/scripts/gen_initramfs_list.sh
> @@ -171,6 +171,18 @@ dir_filelist() {
> ${dep_list}header "$1"
>
> srcdir=$(echo "$1" | sed -e 's://*:/:g')
> +
> + # Files and directories with spaces and colons are unsupported.
> + local unsupported=$(find "${srcdir}" -regex '.*\(:\| \).*')
> + if [ ! -z "${unsupported}" ]; then
> + printf "ERROR: Unable to handle files/directories with " >&2
> + printf "unsupported characters (spaces and colons).\n" >&2
> + printf "Please use other ways to generate a cpio-archive. " >&2
> + printf "Unsupported files and directories are:\n" >&2
> + printf "$unsupported\n" >&2
> + exit 1
> + fi
> +

It would be better to fix the it-doesnt-work-with-all-filenames bug.
Any details on that?

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