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Subject[PATCH v2 13/15] gen_initramfs_list.sh: add -x option to enable newcx format
Date
From: Mimi Zohar <zohar@linux.vnet.ibm.com>

-x option populates extended attributes in cpio_list file passed to
get_init_cpio and selects newcx CPIO format.

Signed-off-by: Mimi Zohar <zohar@linux.vnet.ibm.com>
Signed-off-by: Taras Kondratiuk <takondra@cisco.com>
---
scripts/gen_initramfs_list.sh | 13 ++++++++++++-
usr/Kconfig | 11 +++++++++++
usr/Makefile | 3 ++-
3 files changed, 25 insertions(+), 2 deletions(-)

diff --git a/scripts/gen_initramfs_list.sh b/scripts/gen_initramfs_list.sh
index 86a3c0e5cfbc..cddb82f093d9 100755
--- a/scripts/gen_initramfs_list.sh
+++ b/scripts/gen_initramfs_list.sh
@@ -24,6 +24,7 @@ $0 [-o <file>] [-u <uid>] [-g <gid>] {-d | <cpio_source>} ...
-g <gid> Group ID to map to group ID 0 (root).
<gid> is only meaningful if <cpio_source> is a
directory. "squash" forces all files to gid 0.
+ -x include file extended attributes in cpio archive.
<cpio_source> File list or directory for cpio archive.
If <cpio_source> is a .cpio file it will be used
as direct input to initramfs.
@@ -146,6 +147,9 @@ parse() {
;;
esac

+ $include_xattrs && \
+ getfattr -h -d -m - -e hex --absolute-names ${location} | \
+ sed -e '/^#/d' -e '/^$/d' -e 's/^/xattr /' >> ${output}
echo "${str}" >> ${output}

return 0
@@ -226,6 +230,8 @@ root_gid=0
dep_list=
cpio_file=
cpio_list=
+cpio_opts=
+include_xattrs=false
output="/dev/stdout"
output_file=""
is_cpio_compressed=
@@ -283,6 +289,10 @@ while [ $# -gt 0 ]; do
default_list="$arg"
${dep_list}default_initramfs
;;
+ "-x") # include extended attributers
+ cpio_opts="-x"
+ include_xattrs=true
+ ;;
"-h")
usage
exit 0
@@ -312,7 +322,8 @@ if [ ! -z ${output_file} ]; then
fi
fi
cpio_tfile="$(mktemp ${TMPDIR:-/tmp}/cpiofile.XXXXXX)"
- usr/gen_init_cpio $timestamp ${cpio_list} > ${cpio_tfile}
+ usr/gen_init_cpio $timestamp ${cpio_opts} ${cpio_list} \
+ > ${cpio_tfile}
else
cpio_tfile=${cpio_file}
fi
diff --git a/usr/Kconfig b/usr/Kconfig
index 43658b8a975e..0cc03bc4614c 100644
--- a/usr/Kconfig
+++ b/usr/Kconfig
@@ -52,6 +52,17 @@ config INITRAMFS_ROOT_GID

If you are not sure, leave it set to "0".

+config INITRAMFS_NEWCX
+ bool "Use newcx CPIO format for initramfs"
+ depends on INITRAMFS_SOURCE!=""
+ default n
+ help
+ If selected "usr/gen_init_cpio" will generate newcx CPIO archive
+ format that supports extended attributes.
+
+ See <file:Documentation/early-userspace/buffer-format.txt> for
+ more details.
+
config RD_GZIP
bool "Support initial ramdisk/ramfs compressed using gzip"
depends on BLK_DEV_INITRD
diff --git a/usr/Makefile b/usr/Makefile
index 237a028693ce..1106bfd61475 100644
--- a/usr/Makefile
+++ b/usr/Makefile
@@ -29,7 +29,8 @@ ramfs-input := $(if $(filter-out "",$(CONFIG_INITRAMFS_SOURCE)), \
$(shell echo $(CONFIG_INITRAMFS_SOURCE)),-d)
ramfs-args := \
$(if $(CONFIG_INITRAMFS_ROOT_UID), -u $(CONFIG_INITRAMFS_ROOT_UID)) \
- $(if $(CONFIG_INITRAMFS_ROOT_GID), -g $(CONFIG_INITRAMFS_ROOT_GID))
+ $(if $(CONFIG_INITRAMFS_ROOT_GID), -g $(CONFIG_INITRAMFS_ROOT_GID)) \
+ $(if $(CONFIG_INITRAMFS_NEWCX), -x)

# $(datafile_d_y) is used to identify all files included
# in initramfs and to detect if any files are added/removed.
--
2.10.3.dirty
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