aboutsummaryrefslogtreecommitdiff
path: root/security
diff options
context:
space:
mode:
authorEric Paris <eparis@redhat.com>2006-09-25 23:32:00 -0700
committerLinus Torvalds <torvalds@g5.osdl.org>2006-09-26 08:48:53 -0700
commit296fddf7513c155adbd3a443d12add1f62b5cddb (patch)
tree1fc7e3067f1b635b34a178fcb9a96b88bf5c626e /security
parentf3f8771420737004da55159c2f2dc0b6f483a4ef (diff)
downloadleg-kernel-296fddf7513c155adbd3a443d12add1f62b5cddb.tar.gz
[PATCH] SELinux: eliminate inode_security_set_security
inode_security_set_sid is only called by security_inode_init_security, which is called when a new file is being created and needs to have its incore security state initialized and its security xattr set. This helper used to be called in other places in the past, but now only has the one. So this patch rolls inode_security_set_sid directly back into security_inode_init_security. There also is no need to hold the isec->sem while doing this, as the inode is not available to other threads at this point in time. Signed-off-by: Eric Paris <eparis@redhat.com> Acked-by: Stephen Smalley <sds@tycho.nsa.gov> Acked-by: James Morris <jmorris@namei.org> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
Diffstat (limited to 'security')
-rw-r--r--security/selinux/hooks.c27
1 files changed, 7 insertions, 20 deletions
diff --git a/security/selinux/hooks.c b/security/selinux/hooks.c
index 5a66c4c09f7a..14a78199ee1f 100644
--- a/security/selinux/hooks.c
+++ b/security/selinux/hooks.c
@@ -1364,25 +1364,6 @@ static inline u32 file_to_av(struct file *file)
return av;
}
-/* Set an inode's SID to a specified value. */
-static int inode_security_set_sid(struct inode *inode, u32 sid)
-{
- struct inode_security_struct *isec = inode->i_security;
- struct superblock_security_struct *sbsec = inode->i_sb->s_security;
-
- if (!sbsec->initialized) {
- /* Defer initialization to selinux_complete_init. */
- return 0;
- }
-
- down(&isec->sem);
- isec->sclass = inode_mode_to_security_class(inode->i_mode);
- isec->sid = sid;
- isec->initialized = 1;
- up(&isec->sem);
- return 0;
-}
-
/* Hook functions begin here. */
static int selinux_ptrace(struct task_struct *parent, struct task_struct *child)
@@ -2091,7 +2072,13 @@ static int selinux_inode_init_security(struct inode *inode, struct inode *dir,
}
}
- inode_security_set_sid(inode, newsid);
+ /* Possibly defer initialization to selinux_complete_init. */
+ if (sbsec->initialized) {
+ struct inode_security_struct *isec = inode->i_security;
+ isec->sclass = inode_mode_to_security_class(inode->i_mode);
+ isec->sid = newsid;
+ isec->initialized = 1;
+ }
if (!ss_initialized || sbsec->behavior == SECURITY_FS_USE_MNTPOINT)
return -EOPNOTSUPP;