1 /*
2 * JFFS2 -- Journalling Flash File System, Version 2.
3 *
4 * Copyright © 2001-2007 Red Hat, Inc.
5 *
6 * Created by David Woodhouse <dwmw2@infradead.org>
7 *
8 * For licensing information, see the file 'LICENCE' in this directory.
9 *
10 */
11
12 #include <linux/kernel.h>
13 #include <linux/mtd/mtd.h>
14 #include "nodelist.h"
15
16 int jffs2_flash_direct_writev(struct jffs2_sb_info *c, const struct kvec *vecs,
17 unsigned long count, loff_t to, size_t *retlen)
18 {
19 if (!jffs2_is_writebuffered(c)) {
20 if (jffs2_sum_active()) {
21 int res;
22 res = jffs2_sum_add_kvec(c, vecs, count, (uint32_t) to);
23 if (res) {
24 return res;
25 }
26 }
27 }
28
29 return mtd_writev(c->mtd, vecs, count, to, retlen);
30 }
31
32 int jffs2_flash_direct_write(struct jffs2_sb_info *c, loff_t ofs, size_t len,
33 size_t *retlen, const u_char *buf)
34 {
35 int ret;
36 ret = mtd_write(c->mtd, ofs, len, retlen, buf);
37
38 if (jffs2_sum_active()) {
39 struct kvec vecs[1];
40 int res;
41
42 vecs[0].iov_base = (unsigned char *) buf;
43 vecs[0].iov_len = len;
44
45 res = jffs2_sum_add_kvec(c, vecs, 1, (uint32_t) ofs);
46 if (res) {
47 return res;
48 }
49 }
50 return ret;
51 }
52
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