smb311: add support for using info level for posix extensions query

Adds calls to the newer info level for query info using SMB3.1.1 posix extensions.
The remaining two places that call the older query info (non-SMB3.1.1 POSIX)
require passing in the fid and can be updated in a later patch.
Signed-off-by: Steve French <stfrench@microsoft.com>
Reviewed-by: Aurelien Aptel <aaptel@suse.com>

fs/cifs/dir.c

@@ -411,6 +411,7 @@ cifs_do_create(struct inode *inode, struct dentry *direntry, unsigned int xid,
 		rc = cifs_get_inode_info_unix(&newinode, full_path, inode->i_sb,
 					      xid);
 	else {
+		/* TODO: Add support for calling POSIX query info here, but passing in fid */
 		rc = cifs_get_inode_info(&newinode, full_path, buf, inode->i_sb,
 					 xid, fid);
 		if (newinode) {

fs/cifs/file.c

@@ -243,6 +243,7 @@ cifs_nt_open(char *full_path, struct inode *inode, struct cifs_sb_info *cifs_sb,
 	if (rc)
 		goto out;
 
+	/* TODO: Add support for calling posix query info but with passing in fid */
 	if (tcon->unix_ext)
 		rc = cifs_get_inode_info_unix(&inode, full_path, inode->i_sb,
 					      xid);
@@ -800,7 +801,9 @@ cifs_reopen_file(struct cifsFileInfo *cfile, bool can_flush)
 		if (!is_interrupt_error(rc))
 			mapping_set_error(inode->i_mapping, rc);
 
-		if (tcon->unix_ext)
+		if (tcon->posix_extensions)
+			rc = smb311_posix_get_inode_info(&inode, full_path, inode->i_sb, xid);
+		else if (tcon->unix_ext)
 			rc = cifs_get_inode_info_unix(&inode, full_path,
 						      inode->i_sb, xid);
 		else

fs/cifs/inode.c

@@ -1333,7 +1333,10 @@ struct inode *cifs_root_iget(struct super_block *sb)
 	}
 
 	convert_delimiter(path, CIFS_DIR_SEP(cifs_sb));
-	rc = cifs_get_inode_info(&inode, path, NULL, sb, xid, NULL);
+	if (tcon->posix_extensions)
+		rc = smb311_posix_get_inode_info(&inode, path, sb, xid);
+	else
+		rc = cifs_get_inode_info(&inode, path, NULL, sb, xid, NULL);
 
 iget_no_retry:
 	if (!inode) {
@@ -1689,7 +1692,9 @@ cifs_mkdir_qinfo(struct inode *parent, struct dentry *dentry, umode_t mode,
 	int rc = 0;
 	struct inode *inode = NULL;
 
-	if (tcon->unix_ext)
+	if (tcon->posix_extensions)
+		rc = smb311_posix_get_inode_info(&inode, full_path, parent->i_sb, xid);
+	else if (tcon->unix_ext)
 		rc = cifs_get_inode_info_unix(&inode, full_path, parent->i_sb,
 					      xid);
 	else

fs/cifs/link.c

@@ -701,7 +701,9 @@ cifs_symlink(struct inode *inode, struct dentry *direntry, const char *symname)
 					cifs_sb_target->local_nls); */
 
 	if (rc == 0) {
-		if (pTcon->unix_ext)
+		if (pTcon->posix_extensions)
+			rc = smb311_posix_get_inode_info(&newinode, full_path, inode->i_sb, xid);
+		else if (pTcon->unix_ext)
 			rc = cifs_get_inode_info_unix(&newinode, full_path,
 						      inode->i_sb, xid);
 		else