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path: root/target/linux/generic/patches-3.2/550-ubifs-symlink-xattr-support.patch
blob: 1b11fe79e67934c7050644508fd937d6a531aa0b (plain)
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--- a/fs/ubifs/file.c
+++ b/fs/ubifs/file.c
@@ -1575,6 +1575,12 @@ const struct inode_operations ubifs_syml
 	.follow_link = ubifs_follow_link,
 	.setattr     = ubifs_setattr,
 	.getattr     = ubifs_getattr,
+#ifdef CONFIG_UBIFS_FS_XATTR
+	.setxattr    = ubifs_setxattr,
+	.getxattr    = ubifs_getxattr,
+	.listxattr   = ubifs_listxattr,
+	.removexattr = ubifs_removexattr,
+#endif
 };
 
 const struct file_operations ubifs_file_operations = {
--- a/fs/ubifs/journal.c
+++ b/fs/ubifs/journal.c
@@ -553,7 +553,8 @@ int ubifs_jnl_update(struct ubifs_info *
 
 	dbg_jnl("ino %lu, dent '%.*s', data len %d in dir ino %lu",
 		inode->i_ino, nm->len, nm->name, ui->data_len, dir->i_ino);
-	ubifs_assert(dir_ui->data_len == 0);
+	if (!xent)
+		ubifs_assert(dir_ui->data_len == 0);
 	ubifs_assert(mutex_is_locked(&dir_ui->ui_mutex));
 
 	dlen = UBIFS_DENT_NODE_SZ + nm->len + 1;
@@ -573,6 +574,13 @@ int ubifs_jnl_update(struct ubifs_info *
 	aligned_dlen = ALIGN(dlen, 8);
 	aligned_ilen = ALIGN(ilen, 8);
 	len = aligned_dlen + aligned_ilen + UBIFS_INO_NODE_SZ;
+	if (xent) {
+		/*
+		 * Make sure to account for dir_ui->data_len in
+		 * length calculation in case there is extended attribute.
+		 */
+		len += dir_ui->data_len;
+	}
 	dent = kmalloc(len, GFP_NOFS);
 	if (!dent)
 		return -ENOMEM;
@@ -649,7 +657,8 @@ int ubifs_jnl_update(struct ubifs_info *
 
 	ino_key_init(c, &ino_key, dir->i_ino);
 	ino_offs += aligned_ilen;
-	err = ubifs_tnc_add(c, &ino_key, lnum, ino_offs, UBIFS_INO_NODE_SZ);
+	err = ubifs_tnc_add(c, &ino_key, lnum, ino_offs,
+			    UBIFS_INO_NODE_SZ + dir_ui->data_len);
 	if (err)
 		goto out_ro;
 
--- a/fs/ubifs/xattr.c
+++ b/fs/ubifs/xattr.c
@@ -211,12 +211,12 @@ static int change_xattr(struct ubifs_inf
 	}
 	memcpy(ui->data, value, size);
 	inode->i_size = ui->ui_size = size;
-	ui->data_len = size;
 
 	mutex_lock(&host_ui->ui_mutex);
 	host->i_ctime = ubifs_current_time(host);
 	host_ui->xattr_size -= CALC_XATTR_BYTES(ui->data_len);
 	host_ui->xattr_size += CALC_XATTR_BYTES(size);
+	ui->data_len = size;
 
 	/*
 	 * It is important to write the host inode after the xattr inode