linux-kernel - [PATCH v2 5/5] orangefs: cache NULL when both default

lists.openwall.net		lists / announce owl-users owl-dev john-users john-dev passwdqc-users yescrypt popa3d-users / oss-security kernel-hardening musl sabotage tlsify passwords / crypt-dev xvendor / Bugtraq Full-Disclosure linux-kernel linux-netdev linux-ext4 linux-hardening linux-cve-announce PHC
Open Source and information security mailing list archives

Hash Suite for Android: free password hash cracker in your pocket

[<prev] [next>] [<thread-prev] [thread-next>] [day] [month] [year] [list]

Message-Id: <20180831143352.22970-5-cgxu519@gmx.com>
Date:   Fri, 31 Aug 2018 22:33:52 +0800
From:   Chengguang Xu <cgxu519@....com>
To:     jack@...e.com, tytso@....edu, adilger.kernel@...ger.ca,
        jaegeuk@...nel.org, yuchao0@...wei.com, shaggy@...nel.org,
        hubcap@...ibond.com, martin@...ibond.com
Cc:     devel@...ts.orangefs.org, linux-kernel@...r.kernel.org,
        linux-ext4@...r.kernel.org, linux-f2fs-devel@...ts.sourceforge.net,
        jfs-discussion@...ts.sourceforge.net,
        Chengguang Xu <cgxu519@....com>
Subject: [PATCH v2 5/5] orangefs: cache NULL when both default_acl and acl are NULL

default_acl and acl of newly created inode will be initiated
as ACL_NOT_CACHED in vfs function inode_init_always() and later
will be updated by calling xxx_init_acl() in specific filesystems.
Howerver, when default_acl and acl are NULL then they keep the value
of ACL_NOT_CACHED, this patch tries to cache NULL for acl/default_acl
in this case.

Signed-off-by: Chengguang Xu <cgxu519@....com>
---
v1->v2:
- Coding style change.

 fs/orangefs/acl.c | 4 ++++
 1 file changed, 4 insertions(+)

diff --git a/fs/orangefs/acl.c b/fs/orangefs/acl.c
index 10587413b20e..72d2ff17d27b 100644
--- a/fs/orangefs/acl.c
+++ b/fs/orangefs/acl.c
@@ -167,12 +167,16 @@ int orangefs_init_acl(struct inode *inode, struct inode *dir)
 		error = __orangefs_set_acl(inode, default_acl,
 					   ACL_TYPE_DEFAULT);
 		posix_acl_release(default_acl);
+	} else {
+		inode->i_default_acl = NULL;
 	}
 
 	if (acl) {
 		if (!error)
 			error = __orangefs_set_acl(inode, acl, ACL_TYPE_ACCESS);
 		posix_acl_release(acl);
+	} else {
+		inode->i_acl = NULL;
 	}
 
 	/* If mode of the inode was changed, then do a forcible ->setattr */
-- 
2.17.1