Merge branch 'master' of git://git.denx.de/u-boot-spi

[karo-tx-uboot.git] / fs / ext4 / ext4fs.c

diff --git a/fs/ext4/ext4fs.c b/fs/ext4/ext4fs.c
index 1954afb91d8817109a8022ee1a7e136fd259d580..417ce7b63bf0215122821cee7236e0062e9ee7ef 100644 (file)
--- a/fs/ext4/ext4fs.c
+++ b/fs/ext4/ext4fs.c
@@ -18,19 +18,7 @@
  *
  * ext4write : Based on generic ext4 protocol.
  *
- * This program is free software; you can redistribute it and/or modify
- * it under the terms of the GNU General Public License as published by
- * the Free Software Foundation; either version 2 of the License, or
- * (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software
- * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
+ * SPDX-License-Identifier:    GPL-2.0+
  */
 
 #include <common.h>
@@ -62,16 +50,16 @@ int ext4fs_read_file(struct ext2fs_node *node, int pos,
 {
        struct ext_filesystem *fs = get_fs();
        int i;
-       int blockcnt;
+       lbaint_t blockcnt;
        int log2blksz = fs->dev_desc->log2blksz;
        int log2_fs_blocksize = LOG2_BLOCK_SIZE(node->data) - log2blksz;
        int blocksize = (1 << (log2_fs_blocksize + log2blksz));
        unsigned int filesize = __le32_to_cpu(node->inode.size);
-       int previous_block_number = -1;
-       int delayed_start = 0;
-       int delayed_extent = 0;
-       int delayed_skipfirst = 0;
-       int delayed_next = 0;
+       lbaint_t previous_block_number = -1;
+       lbaint_t delayed_start = 0;
+       lbaint_t delayed_extent = 0;
+       lbaint_t delayed_skipfirst = 0;
+       lbaint_t delayed_next = 0;
        char *delayed_buf = NULL;
        short status;
 
@@ -82,7 +70,7 @@ int ext4fs_read_file(struct ext2fs_node *node, int pos,
        blockcnt = ((len + pos) + blocksize - 1) / blocksize;
 
        for (i = pos / blocksize; i < blockcnt; i++) {
-               int blknr;
+               lbaint_t blknr;
                int blockoff = pos % blocksize;
                int blockend = blocksize;
                int skipfirst = 0;
@@ -186,6 +174,14 @@ int ext4fs_ls(const char *dirname)
        return 0;
 }
 
+int ext4fs_exists(const char *filename)
+{
+       int file_len;
+
+       file_len = ext4fs_open(filename);
+       return file_len >= 0;
+}
+
 int ext4fs_read(char *buf, unsigned len)
 {
        if (ext4fs_root == NULL || ext4fs_file == NULL)