switch ->setxattr() to passing dentry and inode separately
smack ->d_instantiate() uses ->setxattr(), so to be able to call it before
we'd hashed the new dentry and attached it to inode, we need ->setxattr()
instances getting the inode as an explicit argument rather than obtaining
it from dentry.
Similar change for ->getxattr() had been done in commit ce23e64. Unlike
->getxattr() (which is used by both selinux and smack instances of
->d_instantiate()) ->setxattr() is used only by smack one and unfortunately
it got missed back then.
Reported-by: Seung-Woo Kim <sw0312.kim@samsung.com>
Tested-by: Casey Schaufler <casey@schaufler-ca.com>
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
diff --git a/fs/kernfs/inode.c b/fs/kernfs/inode.c
index 1719649..63b925d5 100644
--- a/fs/kernfs/inode.c
+++ b/fs/kernfs/inode.c
@@ -160,10 +160,11 @@
return 0;
}
-int kernfs_iop_setxattr(struct dentry *dentry, const char *name,
- const void *value, size_t size, int flags)
+int kernfs_iop_setxattr(struct dentry *unused, struct inode *inode,
+ const char *name, const void *value,
+ size_t size, int flags)
{
- struct kernfs_node *kn = dentry->d_fsdata;
+ struct kernfs_node *kn = inode->i_private;
struct kernfs_iattrs *attrs;
void *secdata;
int error;
@@ -175,11 +176,11 @@
if (!strncmp(name, XATTR_SECURITY_PREFIX, XATTR_SECURITY_PREFIX_LEN)) {
const char *suffix = name + XATTR_SECURITY_PREFIX_LEN;
- error = security_inode_setsecurity(d_inode(dentry), suffix,
+ error = security_inode_setsecurity(inode, suffix,
value, size, flags);
if (error)
return error;
- error = security_inode_getsecctx(d_inode(dentry),
+ error = security_inode_getsecctx(inode,
&secdata, &secdata_len);
if (error)
return error;
diff --git a/fs/kernfs/kernfs-internal.h b/fs/kernfs/kernfs-internal.h
index 45c9192..3715923 100644
--- a/fs/kernfs/kernfs-internal.h
+++ b/fs/kernfs/kernfs-internal.h
@@ -81,7 +81,8 @@
int kernfs_iop_setattr(struct dentry *dentry, struct iattr *iattr);
int kernfs_iop_getattr(struct vfsmount *mnt, struct dentry *dentry,
struct kstat *stat);
-int kernfs_iop_setxattr(struct dentry *dentry, const char *name, const void *value,
+int kernfs_iop_setxattr(struct dentry *dentry, struct inode *inode,
+ const char *name, const void *value,
size_t size, int flags);
int kernfs_iop_removexattr(struct dentry *dentry, const char *name);
ssize_t kernfs_iop_getxattr(struct dentry *dentry, struct inode *inode,