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