| lh | 9ed821d | 2023-04-07 01:36:19 -0700 | [diff] [blame] | 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 | } |