aboutsummaryrefslogtreecommitdiff
path: root/security
diff options
context:
space:
mode:
authorLinus Torvalds <torvalds@linux-foundation.org>2011-01-07 08:56:33 -0800
committerLinus Torvalds <torvalds@linux-foundation.org>2011-01-07 08:56:33 -0800
commitb4a45f5fe8078bfc10837dbd5b98735058bc4698 (patch)
treedf6f13a27610a3ec7eb4a661448cd779a8f84c79 /security
parent01539ba2a706ab7d35fc0667dff919ade7f87d63 (diff)
parentb3e19d924b6eaf2ca7d22cba99a517c5171007b6 (diff)
downloadlinux-linaro-b4a45f5fe8078bfc10837dbd5b98735058bc4698.tar.gz
Merge branch 'vfs-scale-working' of git://git.kernel.org/pub/scm/linux/kernel/git/npiggin/linux-npiggin
* 'vfs-scale-working' of git://git.kernel.org/pub/scm/linux/kernel/git/npiggin/linux-npiggin: (57 commits) fs: scale mntget/mntput fs: rename vfsmount counter helpers fs: implement faster dentry memcmp fs: prefetch inode data in dcache lookup fs: improve scalability of pseudo filesystems fs: dcache per-inode inode alias locking fs: dcache per-bucket dcache hash locking bit_spinlock: add required includes kernel: add bl_list xfs: provide simple rcu-walk ACL implementation btrfs: provide simple rcu-walk ACL implementation ext2,3,4: provide simple rcu-walk ACL implementation fs: provide simple rcu-walk generic_check_acl implementation fs: provide rcu-walk aware permission i_ops fs: rcu-walk aware d_revalidate method fs: cache optimise dentry and inode for rcu-walk fs: dcache reduce branches in lookup path fs: dcache remove d_mounted fs: fs_struct use seqlock fs: rcu-walk for path lookup ...
Diffstat (limited to 'security')
-rw-r--r--security/security.c9
-rw-r--r--security/selinux/selinuxfs.c16
-rw-r--r--security/tomoyo/realpath.c1
3 files changed, 20 insertions, 6 deletions
diff --git a/security/security.c b/security/security.c
index e5fb07a3052..739e40362f4 100644
--- a/security/security.c
+++ b/security/security.c
@@ -513,6 +513,15 @@ int security_inode_permission(struct inode *inode, int mask)
return security_ops->inode_permission(inode, mask);
}
+int security_inode_exec_permission(struct inode *inode, unsigned int flags)
+{
+ if (unlikely(IS_PRIVATE(inode)))
+ return 0;
+ if (flags)
+ return -ECHILD;
+ return security_ops->inode_permission(inode, MAY_EXEC);
+}
+
int security_inode_setattr(struct dentry *dentry, struct iattr *attr)
{
if (unlikely(IS_PRIVATE(dentry->d_inode)))
diff --git a/security/selinux/selinuxfs.c b/security/selinux/selinuxfs.c
index 073fd5b0a53..43deac21949 100644
--- a/security/selinux/selinuxfs.c
+++ b/security/selinux/selinuxfs.c
@@ -1145,24 +1145,28 @@ static void sel_remove_entries(struct dentry *de)
{
struct list_head *node;
- spin_lock(&dcache_lock);
+ spin_lock(&de->d_lock);
node = de->d_subdirs.next;
while (node != &de->d_subdirs) {
struct dentry *d = list_entry(node, struct dentry, d_u.d_child);
+
+ spin_lock_nested(&d->d_lock, DENTRY_D_LOCK_NESTED);
list_del_init(node);
if (d->d_inode) {
- d = dget_locked(d);
- spin_unlock(&dcache_lock);
+ dget_dlock(d);
+ spin_unlock(&de->d_lock);
+ spin_unlock(&d->d_lock);
d_delete(d);
simple_unlink(de->d_inode, d);
dput(d);
- spin_lock(&dcache_lock);
- }
+ spin_lock(&de->d_lock);
+ } else
+ spin_unlock(&d->d_lock);
node = de->d_subdirs.next;
}
- spin_unlock(&dcache_lock);
+ spin_unlock(&de->d_lock);
}
#define BOOL_DIR_NAME "booleans"
diff --git a/security/tomoyo/realpath.c b/security/tomoyo/realpath.c
index 1d0bf8fa192..d1e05b04771 100644
--- a/security/tomoyo/realpath.c
+++ b/security/tomoyo/realpath.c
@@ -14,6 +14,7 @@
#include <linux/slab.h>
#include <net/sock.h>
#include "common.h"
+#include "../../fs/internal.h"
/**
* tomoyo_encode: Convert binary string to ascii string.