Order files in cpio not kept

[phhusson]

Because strip-cpio writes files to cpio-%d, when doing cat cpio-*, cpio-100 comes before cpio-25, which generates weird cases like the folder entry appearing AFTER the file entry.
The result being a cpio considered as corrupted

[nkk71]

So it's just a "version sort" issue? If so, how about changing it from
cat cpio-* ramdisk2 > ramdisk.tmp
to:

rm -f ramdisk.tmp;
for f in ls -v cpio-*; do cat $f >> ramdisk.tmp; done;
cat ramdisk2 >> ramdisk.tmp;

markdown is preventing showing the backquote, so the command is:
for f in <backquote>ls -v cpio-*<backquote>; do cat $f >> ramdisk.tmp; done;

[bziemek]

Without changing strip-cpio or post-procrssing filenames: for f in cpio-{x-y}... or something with ls - 1v... or, printf...sort -V... with xargs.
The solution with for should be most compatible, but I'm on my mobile right now and can't really check into the options.

[nkk71]

tested it, if it's done in script, you have to do this http://pastebin.com/PrMdhjdT

ls -v (although documented in the options) does not actually sort
sort does not have -V option

EDIT: oh and don't use f as a variable, as that's already being used and will cause a conflict in the repack command

[Deleted user]

How about using filelist order from original cpio dump?

cd "${ramdisk_extract}"
gunzip -c "${bootimg_extract}"/ramdisk.gz | cpio -im
gunzip -c "${bootimg_extract}"/ramdisk.gz | cpio -it0 2>/dev/null > "${bootimg_extract}"/ramdisk.filelist0

doing manipluation, then

# remove deleted objects from ramdisk.filelist0
while read -r -d $'\0' filename ; do
    [[ -e "${filename}" || -L "${filename}" ]] && printf "%s\0" "${filename}" >> "${bootimg_extract}"/ramdisk.filelist0.new
done < "${bootimg_extract}"/ramdisk.filelist0

# add new objects to ramdisk.filelist0 and reset filestamp
find . ! -path . -printf "%P\0" | while IFS= read -r -d $'\0' filename ; do
    touch -h -t 197001010100 "${filename}"
    grep -qZ "^${filename}$" "${bootimg_extract}"/ramdisk.filelist0 || printf "%s\0" "${filename}" >> "${bootimg_extract}"/ramdisk.filelist0.new
done

# build new ramdisk (override extracted orig ramdisk.gz)
cpio --create --null --format='newc' --owner +0:+0 < "${bootimg_extract}"/ramdisk.filelist0.new | gzip -9 > "${bootimg_extract}"/ramdisk.gz

• no build user leak into image (if non root script run)
• cpio order will keep
• no strip-cpio workaround
• todo: assume 197001010100 timestamps
• todo: symlink permission may change from original cpio

-lrw-r--r-- 1 0 0 13 Jan 1 1970 charger -> /sbin/healthd
+lrwxrwxrwx 1 0 0 13 Jan 1 1970 charger -> /sbin/healthd

• todo: new cpio image include differ links counts (if root subdirs)

-drwxr-xr-x 1 0 0 0 Jan 1 1970 dev
+drwxr-xr-x 2 0 0 0 Jan 1 1970 dev