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Commit 4c6f2eb9 authored by Mike Frysinger's avatar Mike Frysinger Committed by Sam Ravnborg
Browse files

kbuild: add support for squashing uid/gid in gen_initramfs_list.sh 



Sometimes it is useful to squash all uid's/gid's to 0:0 regardless of
current owner.  For example, in build systems that get run as arbitrary
users (uClinux-dist).  This adds a special "squash" keyword so you can do
'-g squash -u squash' and have ownership squashed to root.

Signed-off-by: default avatarMike Frysinger <vapier@gentoo.org>
Cc: Sam Ravnborg <sam@ravnborg.org>
Signed-off-by: default avatarAndrew Morton <akpm@linux-foundation.org>
parent f2434ec1

scripts/gen_initramfs_list.sh

+6 −6
Original line number Diff line number Diff line
@@ -19,11 +19,11 @@ $0 [-o <file>] [-u <uid>] [-g <gid>] {-d | <cpio_source>} ... 
	-o <file>      Create gzipped initramfs file named <file> using

		       gen_init_cpio and gzip

	-u <uid>       User ID to map to user ID 0 (root).

		       <uid> is only meaningful if <cpio_source>

		       is a directory.

		       <uid> is only meaningful if <cpio_source> is a

		       directory.  "squash" forces all files to uid 0.

	-g <gid>       Group ID to map to group ID 0 (root).

		       <gid> is only meaningful if <cpio_source>

		       is a directory.

		       <gid> is only meaningful if <cpio_source> is a

		       directory.  "squash" forces all files to gid 0.

	<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.
@@ -113,8 +113,8 @@ parse() { 
	local gid="$4"

	local ftype=$(filetype "${location}")

	# remap uid/gid to 0 if necessary

	[ "$uid" -eq "$root_uid" ] && uid=0

	[ "$gid" -eq "$root_gid" ] && gid=0

	[ "$root_uid" = "squash" ] && uid=0 || [ "$uid" -eq "$root_uid" ] && uid=0

	[ "$root_gid" = "squash" ] && gid=0 || [ "$gid" -eq "$root_gid" ] && gid=0

	local str="${mode} ${uid} ${gid}"



	[ "${ftype}" == "invalid" ] && return 0