ceph: fix posix ACL hooks

The merge of commit 7221fe4c2ed7 ("ceph: add acl for cephfs") raced with
upstream changes in the generic POSIX ACL code (eg commit 2aeccbe957d0
"fs: add generic xattr_acl handlers" and others).

Some of the fallout was fixed in commit 4db658ea0ca ("ceph: Fix up after
semantic merge conflict"), but it was incomplete: the set_acl
inode_operation wasn't getting set, and the prototype needed to be
adjusted a bit (it doesn't take a dentry anymore).

Signed-off-by: Sage Weil <sage@inktank.com>
Signed-off-by: Ilya Dryomov <ilya.dryomov@inktank.com>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>

fs/ceph/acl.c

@@ -107,14 +107,14 @@ struct posix_acl *ceph_get_acl(struct inode *inode, int type)
 	return acl;
 }
 
-static int ceph_set_acl(struct dentry *dentry, struct inode *inode,
-				struct posix_acl *acl, int type)
+int ceph_set_acl(struct inode *inode, struct posix_acl *acl, int type)
 {
 	int ret = 0, size = 0;
 	const char *name = NULL;
 	char *value = NULL;
 	struct iattr newattrs;
 	umode_t new_mode = inode->i_mode, old_mode = inode->i_mode;
+	struct dentry *dentry = d_find_alias(inode);
 
 	if (acl) {
 		ret = posix_acl_valid(acl);
@@ -208,8 +208,7 @@ int ceph_init_acl(struct dentry *dentry, struct inode *inode, struct inode *dir)
 
 	if (IS_POSIXACL(dir) && acl) {
 		if (S_ISDIR(inode->i_mode)) {
-			ret = ceph_set_acl(dentry, inode, acl,
-						ACL_TYPE_DEFAULT);
+			ret = ceph_set_acl(inode, acl, ACL_TYPE_DEFAULT);
 			if (ret)
 				goto out_release;
 		}
@@ -217,7 +216,7 @@ int ceph_init_acl(struct dentry *dentry, struct inode *inode, struct inode *dir)
 		if (ret < 0)
 			goto out;
 		else if (ret > 0)
-			ret = ceph_set_acl(dentry, inode, acl, ACL_TYPE_ACCESS);
+			ret = ceph_set_acl(inode, acl, ACL_TYPE_ACCESS);
 		else
 			cache_no_acl(inode);
 	} else {

fs/ceph/dir.c

@@ -1303,6 +1303,7 @@ const struct inode_operations ceph_dir_iops = {
 	.listxattr = ceph_listxattr,
 	.removexattr = ceph_removexattr,
 	.get_acl = ceph_get_acl,
+	.set_acl = ceph_set_acl,
 	.mknod = ceph_mknod,
 	.symlink = ceph_symlink,
 	.mkdir = ceph_mkdir,

fs/ceph/inode.c

@@ -97,6 +97,7 @@ const struct inode_operations ceph_file_iops = {
 	.listxattr = ceph_listxattr,
 	.removexattr = ceph_removexattr,
 	.get_acl = ceph_get_acl,
+	.set_acl = ceph_set_acl,
 };
 
 
@@ -1616,6 +1617,7 @@ static const struct inode_operations ceph_symlink_iops = {
 	.listxattr = ceph_listxattr,
 	.removexattr = ceph_removexattr,
 	.get_acl = ceph_get_acl,
+	.set_acl = ceph_set_acl,
 };
 
 /*

fs/ceph/super.h

@@ -718,6 +718,7 @@ extern void ceph_queue_writeback(struct inode *inode);
 extern int ceph_do_getattr(struct inode *inode, int mask);
 extern int ceph_permission(struct inode *inode, int mask);
 extern int ceph_setattr(struct dentry *dentry, struct iattr *attr);
+extern int ceph_setattr(struct dentry *dentry, struct iattr *attr);
 extern int ceph_getattr(struct vfsmount *mnt, struct dentry *dentry,
 			struct kstat *stat);
 
@@ -741,12 +742,14 @@ extern const struct xattr_handler *ceph_xattr_handlers[];
 #ifdef CONFIG_CEPH_FS_POSIX_ACL
 
 struct posix_acl *ceph_get_acl(struct inode *, int);
+int ceph_set_acl(struct inode *inode, struct posix_acl *acl, int type);
 int ceph_init_acl(struct dentry *, struct inode *, struct inode *);
 void ceph_forget_all_cached_acls(struct inode *inode);
 
 #else
 
 #define ceph_get_acl NULL
+#define ceph_set_acl NULL
 
 static inline int ceph_init_acl(struct dentry *dentry, struct inode *inode,
 				struct inode *dir)