linux-kernel - [PATCH v4 2/2] squashfs-tools: Add posix acl support

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Message-Id: <8ccfc9ba88a466cf046c366f07e994ca7a46ac0a.1548401987.git.geliangtang@gmail.com>
Date:   Fri, 25 Jan 2019 16:27:48 +0800
From:   Geliang Tang <geliangtang@...il.com>
To:     Phillip Lougher <phillip@...ashfs.org.uk>,
        Andrew Morton <akpm@...ux-foundation.org>,
        Kees Cook <keescook@...omium.org>,
        Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
        Coly Li <colyli@...e.de>
Cc:     Geliang Tang <geliangtang@...il.com>,
        linux-fsdevel@...r.kernel.org, linux-kernel@...r.kernel.org
Subject: [PATCH v4 2/2] squashfs-tools: Add posix acl support

This patch adds posix acl (Access Control Lists) support to squashfs-tools.

Signed-off-by: Geliang Tang <geliangtang@...il.com>
---
 squashfs-tools/read_xattrs.c |  2 ++
 squashfs-tools/squashfs_fs.h | 12 +++++++-----
 2 files changed, 9 insertions(+), 5 deletions(-)

diff --git a/squashfs-tools/read_xattrs.c b/squashfs-tools/read_xattrs.c
index 42106f5..8ef8291 100644
--- a/squashfs-tools/read_xattrs.c
+++ b/squashfs-tools/read_xattrs.c
@@ -64,6 +64,8 @@ static long long xattr_table_start;
  */
 struct prefix prefix_table[] = {
 	{ "user.", SQUASHFS_XATTR_USER },
+	{ "system.", SQUASHFS_XATTR_POSIX_ACL_ACCESS },
+	{ "system.", SQUASHFS_XATTR_POSIX_ACL_DEFAULT },
 	{ "trusted.", SQUASHFS_XATTR_TRUSTED },
 	{ "security.", SQUASHFS_XATTR_SECURITY },
 	{ "", -1 }
diff --git a/squashfs-tools/squashfs_fs.h b/squashfs-tools/squashfs_fs.h
index afca918..040035c 100644
--- a/squashfs-tools/squashfs_fs.h
+++ b/squashfs-tools/squashfs_fs.h
@@ -122,11 +122,13 @@
 #define SQUASHFS_LSOCKET_TYPE		14
 
 /* Xattr types */
-#define SQUASHFS_XATTR_USER		0
-#define SQUASHFS_XATTR_TRUSTED		1
-#define SQUASHFS_XATTR_SECURITY		2
-#define SQUASHFS_XATTR_VALUE_OOL	256
-#define SQUASHFS_XATTR_PREFIX_MASK	0xff
+#define SQUASHFS_XATTR_USER			0
+#define SQUASHFS_XATTR_POSIX_ACL_ACCESS		1
+#define SQUASHFS_XATTR_POSIX_ACL_DEFAULT	2
+#define SQUASHFS_XATTR_TRUSTED			3
+#define SQUASHFS_XATTR_SECURITY			4
+#define SQUASHFS_XATTR_VALUE_OOL		256
+#define SQUASHFS_XATTR_PREFIX_MASK		0xff
 
 /* Flag whether block is compressed or uncompressed, bit is set if block is
  * uncompressed */
-- 
2.17.1