Merge tag 'for-linus-4.14-ofs2' of git://git.kernel.org/pub/scm/linux/kernel/git/hubcap/linux

Pull orangefs updates from Mike Marshall:
 "Some cleanups and a big bug fix for ACLs.

  When I was reviewing Jan Kara's ACL patch, I realized that Orangefs
  ACL code was busted, not just in the kernel module, but in the server
  as well. I've been working on the code in the server mostly, but
  here's one kernel patch, there will be more"

* tag 'for-linus-4.14-ofs2' of git://git.kernel.org/pub/scm/linux/kernel/git/hubcap/linux:
  orangefs: Adjust three checks for null pointers
  orangefs: Use kcalloc() in orangefs_prepare_cdm_array()
  orangefs: Delete error messages for a failed memory allocation in five functions
  orangefs: constify xattr_handler structure
  orangefs: don't call filemap_write_and_wait from fsync
  orangefs: off by ones in xattr size checks
  orangefs: documentation clean up
  orangefs: react properly to posix_acl_update_mode's aftermath.
  orangefs: Don't clear SGID when inheriting ACLs

8 files changed, 56 insertions, 53 deletions

diff --git a/fs/orangefs/acl.c b/fs/orangefs/acl.c
index 7a3754488312c..9108ef433e6d7 100644
--- a/fs/orangefs/acl.c
+++ b/fs/orangefs/acl.c
@@ -35,7 +35,7 @@ struct posix_acl *orangefs_get_acl(struct inode *inode, int type)
 	 * I don't do that for now.
 	 */
 	value = kmalloc(ORANGEFS_MAX_XATTR_VALUELEN, GFP_KERNEL);
-	if (value == NULL)
+	if (!value)
 		return ERR_PTR(-ENOMEM);
 
 	gossip_debug(GOSSIP_ACL_DEBUG,
@@ -61,9 +61,9 @@ struct posix_acl *orangefs_get_acl(struct inode *inode, int type)
 	return acl;
 }
 
-int orangefs_set_acl(struct inode *inode, struct posix_acl *acl, int type)
+static int __orangefs_set_acl(struct inode *inode, struct posix_acl *acl,
+			      int type)
 {
-	struct orangefs_inode_s *orangefs_inode = ORANGEFS_I(inode);
 	int error = 0;
 	void *value = NULL;
 	size_t size = 0;
@@ -72,22 +72,6 @@ int orangefs_set_acl(struct inode *inode, struct posix_acl *acl, int type)
 	switch (type) {
 	case ACL_TYPE_ACCESS:
 		name = XATTR_NAME_POSIX_ACL_ACCESS;
-		if (acl) {
-			umode_t mode;
-
-			error = posix_acl_update_mode(inode, &mode, &acl);
-			if (error) {
-				gossip_err("%s: posix_acl_update_mode err: %d\n",
-					   __func__,
-					   error);
-				return error;
-			}
-
-			if (inode->i_mode != mode)
-				SetModeFlag(orangefs_inode);
-			inode->i_mode = mode;
-			mark_inode_dirty_sync(inode);
-		}
 		break;
 	case ACL_TYPE_DEFAULT:
 		name = XATTR_NAME_POSIX_ACL_DEFAULT;
@@ -132,6 +116,42 @@ out:
 	return error;
 }
 
+int orangefs_set_acl(struct inode *inode, struct posix_acl *acl, int type)
+{
+	int error;
+	struct iattr iattr;
+	int rc;
+
+	if (type == ACL_TYPE_ACCESS && acl) {
+		/*
+		 * posix_acl_update_mode checks to see if the permissions
+		 * described by the ACL can be encoded into the
+		 * object's mode. If so, it sets "acl" to NULL
+		 * and "mode" to the new desired value. It is up to
+		 * us to propagate the new mode back to the server...
+		 */
+		error = posix_acl_update_mode(inode, &iattr.ia_mode, &acl);
+		if (error) {
+			gossip_err("%s: posix_acl_update_mode err: %d\n",
+				   __func__,
+				   error);
+			return error;
+		}
+
+		if (acl) {
+			rc = __orangefs_set_acl(inode, acl, type);
+		} else {
+			iattr.ia_valid = ATTR_MODE;
+			rc = orangefs_inode_setattr(inode, &iattr);
+		}
+
+		return rc;
+
+	} else {
+		return -EINVAL;
+	}
+}
+
 int orangefs_init_acl(struct inode *inode, struct inode *dir)
 {
 	struct orangefs_inode_s *orangefs_inode = ORANGEFS_I(inode);
@@ -146,13 +166,14 @@ int orangefs_init_acl(struct inode *inode, struct inode *dir)
 		return error;
 
 	if (default_acl) {
-		error = orangefs_set_acl(inode, default_acl, ACL_TYPE_DEFAULT);
+		error = __orangefs_set_acl(inode, default_acl,
+					   ACL_TYPE_DEFAULT);
 		posix_acl_release(default_acl);
 	}
 
 	if (acl) {
 		if (!error)
-			error = orangefs_set_acl(inode, acl, ACL_TYPE_ACCESS);
+			error = __orangefs_set_acl(inode, acl, ACL_TYPE_ACCESS);
 		posix_acl_release(acl);
 	}
 
diff --git a/fs/orangefs/devorangefs-req.c b/fs/orangefs/devorangefs-req.c
index c19f0787c9c65..2826859bdc2cb 100644
--- a/fs/orangefs/devorangefs-req.c
+++ b/fs/orangefs/devorangefs-req.c
@@ -461,13 +461,10 @@ static ssize_t orangefs_devreq_write_iter(struct kiocb *iocb,
 	if (op->downcall.type != ORANGEFS_VFS_OP_READDIR)
 		goto wakeup;
 
-	op->downcall.trailer_buf =
-		vmalloc(op->downcall.trailer_size);
-	if (op->downcall.trailer_buf == NULL) {
-		gossip_err("%s: failed trailer vmalloc.\n",
-			   __func__);
+	op->downcall.trailer_buf = vmalloc(op->downcall.trailer_size);
+	if (!op->downcall.trailer_buf)
 		goto Enomem;
-	}
+
 	memset(op->downcall.trailer_buf, 0, op->downcall.trailer_size);
 	if (!copy_from_iter_full(op->downcall.trailer_buf,
 			         op->downcall.trailer_size, iter)) {
diff --git a/fs/orangefs/file.c b/fs/orangefs/file.c
index 28f38d813ad23..336ecbf8c2683 100644
--- a/fs/orangefs/file.c
+++ b/fs/orangefs/file.c
@@ -646,14 +646,11 @@ static int orangefs_fsync(struct file *file,
 		       loff_t end,
 		       int datasync)
 {
-	int ret = -EINVAL;
+	int ret;
 	struct orangefs_inode_s *orangefs_inode =
 		ORANGEFS_I(file_inode(file));
 	struct orangefs_kernel_op_s *new_op = NULL;
 
-	/* required call */
-	filemap_write_and_wait_range(file->f_mapping, start, end);
-
 	new_op = op_alloc(ORANGEFS_VFS_OP_FSYNC);
 	if (!new_op)
 		return -ENOMEM;
diff --git a/fs/orangefs/orangefs-bufmap.c b/fs/orangefs/orangefs-bufmap.c
index 038d67545d9f0..7ef473f3d6428 100644
--- a/fs/orangefs/orangefs-bufmap.c
+++ b/fs/orangefs/orangefs-bufmap.c
@@ -244,20 +244,14 @@ orangefs_bufmap_alloc(struct ORANGEFS_dev_map_desc *user_desc)
 
 	bufmap->buffer_index_array =
 		kzalloc(DIV_ROUND_UP(bufmap->desc_count, BITS_PER_LONG), GFP_KERNEL);
-	if (!bufmap->buffer_index_array) {
-		gossip_err("orangefs: could not allocate %d buffer indices\n",
-				bufmap->desc_count);
+	if (!bufmap->buffer_index_array)
 		goto out_free_bufmap;
-	}
 
 	bufmap->desc_array =
 		kcalloc(bufmap->desc_count, sizeof(struct orangefs_bufmap_desc),
 			GFP_KERNEL);
-	if (!bufmap->desc_array) {
-		gossip_err("orangefs: could not allocate %d descriptors\n",
-				bufmap->desc_count);
+	if (!bufmap->desc_array)
 		goto out_free_index_array;
-	}
 
 	bufmap->page_count = bufmap->total_size / PAGE_SIZE;
 
diff --git a/fs/orangefs/orangefs-debugfs.c b/fs/orangefs/orangefs-debugfs.c
index 716ed337f1663..5f59917fd631c 100644
--- a/fs/orangefs/orangefs-debugfs.c
+++ b/fs/orangefs/orangefs-debugfs.c
@@ -571,11 +571,8 @@ static int orangefs_prepare_cdm_array(char *debug_array_string)
 		goto out;
 	}
 
-	cdm_array =
-		kzalloc(cdm_element_count * sizeof(struct client_debug_mask),
-			GFP_KERNEL);
+	cdm_array = kcalloc(cdm_element_count, sizeof(*cdm_array), GFP_KERNEL);
 	if (!cdm_array) {
-		pr_info("malloc failed for cdm_array!\n");
 		rc = -ENOMEM;
 		goto out;
 	}
diff --git a/fs/orangefs/orangefs-mod.c b/fs/orangefs/orangefs-mod.c
index c1b5174cb5a9f..85ef87245a872 100644
--- a/fs/orangefs/orangefs-mod.c
+++ b/fs/orangefs/orangefs-mod.c
@@ -98,7 +98,6 @@ static int __init orangefs_init(void)
 	orangefs_htable_ops_in_progress =
 	    kcalloc(hash_table_size, sizeof(struct list_head), GFP_KERNEL);
 	if (!orangefs_htable_ops_in_progress) {
-		gossip_err("Failed to initialize op hashtable");
 		ret = -ENOMEM;
 		goto cleanup_inode;
 	}
diff --git a/fs/orangefs/super.c b/fs/orangefs/super.c
index 5a1bed6c8c6ae..47f3fb9cbec40 100644
--- a/fs/orangefs/super.c
+++ b/fs/orangefs/super.c
@@ -107,10 +107,8 @@ static struct inode *orangefs_alloc_inode(struct super_block *sb)
 	struct orangefs_inode_s *orangefs_inode;
 
 	orangefs_inode = kmem_cache_alloc(orangefs_inode_cache, GFP_KERNEL);
-	if (orangefs_inode == NULL) {
-		gossip_err("Failed to allocate orangefs_inode\n");
+	if (!orangefs_inode)
 		return NULL;
-	}
 
 	/*
 	 * We want to clear everything except for rw_semaphore and the
diff --git a/fs/orangefs/xattr.c b/fs/orangefs/xattr.c
index 237c9c04dc3b4..81ac88bb91ff9 100644
--- a/fs/orangefs/xattr.c
+++ b/fs/orangefs/xattr.c
@@ -76,7 +76,7 @@ ssize_t orangefs_inode_getxattr(struct inode *inode, const char *name,
 	if (S_ISLNK(inode->i_mode))
 		return -EOPNOTSUPP;
 
-	if (strlen(name) > ORANGEFS_MAX_XATTR_NAMELEN)
+	if (strlen(name) >= ORANGEFS_MAX_XATTR_NAMELEN)
 		return -EINVAL;
 
 	fsuid = from_kuid(&init_user_ns, current_fsuid());
@@ -169,7 +169,7 @@ static int orangefs_inode_removexattr(struct inode *inode, const char *name,
 	struct orangefs_kernel_op_s *new_op = NULL;
 	int ret = -ENOMEM;
 
-	if (strlen(name) > ORANGEFS_MAX_XATTR_NAMELEN)
+	if (strlen(name) >= ORANGEFS_MAX_XATTR_NAMELEN)
 		return -EINVAL;
 
 	down_write(&orangefs_inode->xattr_sem);
@@ -233,13 +233,13 @@ int orangefs_inode_setxattr(struct inode *inode, const char *name,
 
 	if (size > ORANGEFS_MAX_XATTR_VALUELEN)
 		return -EINVAL;
-	if (strlen(name) > ORANGEFS_MAX_XATTR_NAMELEN)
+	if (strlen(name) >= ORANGEFS_MAX_XATTR_NAMELEN)
 		return -EINVAL;
 
 	internal_flag = convert_to_internal_xattr_flags(flags);
 
 	/* This is equivalent to a removexattr */
-	if (size == 0 && value == NULL) {
+	if (size == 0 && !value) {
 		gossip_debug(GOSSIP_XATTR_DEBUG,
 			     "removing xattr (%s)\n",
 			     name);
@@ -311,7 +311,7 @@ ssize_t orangefs_listxattr(struct dentry *dentry, char *buffer, size_t size)
 	int i = 0;
 	int returned_count = 0;
 
-	if (size > 0 && buffer == NULL) {
+	if (size > 0 && !buffer) {
 		gossip_err("%s: bogus NULL pointers\n", __func__);
 		return -EINVAL;
 	}
@@ -442,7 +442,7 @@ static int orangefs_xattr_get_default(const struct xattr_handler *handler,
 
 }
 
-static struct xattr_handler orangefs_xattr_default_handler = {
+static const struct xattr_handler orangefs_xattr_default_handler = {
 	.prefix = "",  /* match any name => handlers called with full name */
 	.get = orangefs_xattr_get_default,
 	.set = orangefs_xattr_set_default,