From: Mike Frysinger <vapier@gentoo.org>
To: akpm@linux-foundation.org, linux-kernel@vger.kernel.org
Subject: [patch] add support for squashing uid/gid in gen_initramfs_list.sh
Date: Mon, 7 May 2007 05:40:11 -0400 [thread overview]
Message-ID: <200705070540.12166.vapier@gentoo.org> (raw)
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: Mike Frysinger <vapier@gentoo.org>
---
diff --git a/scripts/gen_initramfs_list.sh b/scripts/gen_initramfs_list.sh
index 683eb12..684fb9c 100644
--- a/scripts/gen_initramfs_list.sh
+++ b/scripts/gen_initramfs_list.sh
@@ -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
reply other threads:[~2007-05-07 9:39 UTC|newest]
Thread overview: [no followups] expand[flat|nested] mbox.gz Atom feed
Reply instructions:
You may reply publicly to this message via plain-text email
using any one of the following methods:
* Save the following mbox file, import it into your mail client,
and reply-to-all from there: mbox
Avoid top-posting and favor interleaved quoting:
https://en.wikipedia.org/wiki/Posting_style#Interleaved_style
* Reply using the --to, --cc, and --in-reply-to
switches of git-send-email(1):
git send-email \
--in-reply-to=200705070540.12166.vapier@gentoo.org \
--to=vapier@gentoo.org \
--cc=akpm@linux-foundation.org \
--cc=linux-kernel@vger.kernel.org \
/path/to/YOUR_REPLY
https://kernel.org/pub/software/scm/git/docs/git-send-email.html
* If your mail client supports setting the In-Reply-To header
via mailto: links, try the mailto: link
Be sure your reply has a Subject: header at the top and a blank line
before the message body.
This is a public inbox, see mirroring instructions
for how to clone and mirror all data and code used for this inbox