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: Windows password security audit tool. GUI, reports in PDF.
[<prev] [next>] [thread-next>] [day] [month] [year] [list]
Message-ID: <20070921093906.GB6812@localhost.sw.ru>
Date:	Fri, 21 Sep 2007 13:39:06 +0400
From:	Alexey Dobriyan <adobriyan@...ru>
To:	akpm@...l.org
Cc:	linux-kernel@...r.kernel.org, devel@...nvz.org
Subject: [PATCH 2/3] user.c: use kmem_cache_zalloc()

Quite a few fields are zeroed during user_struct creation, so use
kmem_cache_zalloc() --  save a few lines and #ifdef. Also will help avoid
 #ifdef CONFIG_POSIX_MQUEUE in next patch.

Signed-off-by: Alexey Dobriyan <adobriyan@...ru>
---

 kernel/user.c |   13 +------------
 1 file changed, 1 insertion(+), 12 deletions(-)

--- a/kernel/user.c
+++ b/kernel/user.c
@@ -129,21 +129,11 @@ struct user_struct * alloc_uid(struct user_namespace *ns, uid_t uid)
 	if (!up) {
 		struct user_struct *new;
 
-		new = kmem_cache_alloc(uid_cachep, GFP_KERNEL);
+		new = kmem_cache_zalloc(uid_cachep, GFP_KERNEL);
 		if (!new)
 			return NULL;
 		new->uid = uid;
 		atomic_set(&new->__count, 1);
-		atomic_set(&new->processes, 0);
-		atomic_set(&new->files, 0);
-		atomic_set(&new->sigpending, 0);
-#ifdef CONFIG_INOTIFY_USER
-		atomic_set(&new->inotify_watches, 0);
-		atomic_set(&new->inotify_devs, 0);
-#endif
-
-		new->mq_bytes = 0;
-		new->locked_shm = 0;
 
 		if (alloc_uid_keyring(new, current) < 0) {
 			kmem_cache_free(uid_cachep, new);

-
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to majordomo@...r.kernel.org
More majordomo info at  http://vger.kernel.org/majordomo-info.html
Please read the FAQ at  http://www.tux.org/lkml/

Powered by blists - more mailing lists

Powered by Openwall GNU/*/Linux Powered by OpenVZ