| 1 | /* |
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| 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 <dwmw2@infradead.org> |
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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, invecs: vecs, count, to: (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(mtd: 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(mtd: c->mtd, to: 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, invecs: vecs, count: 1, to: (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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| 52 | |
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