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

Signed-off-by: Geliang Tang <geliangt...@gmail.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

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