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authorJan Kara <jack@suse.cz>2012-01-03 13:14:29 +0100
committerLinus Torvalds <torvalds@linux-foundation.org>2012-01-03 16:12:19 -0800
commit30e053248da178cf6154bb7e950dc8713567e3fa (patch)
tree3ef4cb7f85f581fe53361ea0eb2586a8b6e696c2
parent4376eee92e5a8332b470040e672ea99cd44c826a (diff)
downloadlinux-linaro-30e053248da178cf6154bb7e950dc8713567e3fa.tar.gz
security: Fix security_old_inode_init_security() when CONFIG_SECURITY is not set
Commit 1e39f384bb01 ("evm: fix build problems") makes the stub version of security_old_inode_init_security() return 0 when CONFIG_SECURITY is not set. But that makes callers such as reiserfs_security_init() assume that security_old_inode_init_security() has set name, value, and len arguments properly - but security_old_inode_init_security() left them uninitialized which then results in interesting failures. Revert security_old_inode_init_security() to the old behavior of returning EOPNOTSUPP since both callers (reiserfs and ocfs2) handle this just fine. [ Also fixed the S_PRIVATE(inode) case of the actual non-stub security_old_inode_init_security() function to return EOPNOTSUPP for the same reason, as pointed out by Mimi Zohar. It got incorrectly changed to match the new function in commit fb88c2b6cbb1: "evm: fix security/security_old_init_security return code". - Linus ] Reported-by: Jorge Bastos <mysql.jorge@decimal.pt> Acked-by: James Morris <jmorris@namei.org> Acked-by: Mimi Zohar <zohar@us.ibm.com> Signed-off-by: Jan Kara <jack@suse.cz> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
-rw-r--r--include/linux/security.h2
-rw-r--r--security/security.c2
2 files changed, 2 insertions, 2 deletions
diff --git a/include/linux/security.h b/include/linux/security.h
index 19d8e04e168..e8c619d3929 100644
--- a/include/linux/security.h
+++ b/include/linux/security.h
@@ -2056,7 +2056,7 @@ static inline int security_old_inode_init_security(struct inode *inode,
char **name, void **value,
size_t *len)
{
- return 0;
+ return -EOPNOTSUPP;
}
static inline int security_inode_create(struct inode *dir,
diff --git a/security/security.c b/security/security.c
index 0c6cc69c8f8..e2f684aeb70 100644
--- a/security/security.c
+++ b/security/security.c
@@ -381,7 +381,7 @@ int security_old_inode_init_security(struct inode *inode, struct inode *dir,
void **value, size_t *len)
{
if (unlikely(IS_PRIVATE(inode)))
- return 0;
+ return -EOPNOTSUPP;
return security_ops->inode_init_security(inode, dir, qstr, name, value,
len);
}