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| author | Rafał Miłecki <rafal@milecki.pl> | 2018-07-15 23:23:42 +0200 |
|---|---|---|
| committer | Rafał Miłecki <rafal@milecki.pl> | 2018-07-15 23:27:09 +0200 |
| commit | 82498a7f7aa86ad0e93ef60d50dccaa0a9549e4c (patch) | |
| tree | 16db1aab529e2d4fb3812ee250b1ae4df497505d /package/system/mtd/src | |
| parent | 49bdd43da236af54b6b82d995b81532e7becf08f (diff) | |
| download | upstream-82498a7f7aa86ad0e93ef60d50dccaa0a9549e4c.tar.gz upstream-82498a7f7aa86ad0e93ef60d50dccaa0a9549e4c.tar.bz2 upstream-82498a7f7aa86ad0e93ef60d50dccaa0a9549e4c.zip | |
mtd: improve check for TRX header being already fixed
First of all lengths should be compared after checking all blocks for
being good/bad. It's because requested length may differ from a final
one if there were some bad blocks.
Secondly it makes sense to also compare crc32 since we already have a
new one calculated.
Signed-off-by: Rafał Miłecki <rafal@milecki.pl>
Diffstat (limited to 'package/system/mtd/src')
| -rw-r--r-- | package/system/mtd/src/trx.c | 15 |
1 files changed, 8 insertions, 7 deletions
diff --git a/package/system/mtd/src/trx.c b/package/system/mtd/src/trx.c index c1296a5f70..aaca232b6f 100644 --- a/package/system/mtd/src/trx.c +++ b/package/system/mtd/src/trx.c @@ -207,13 +207,6 @@ mtd_fixtrx(const char *mtd, size_t offset, size_t data_size) exit(1); } - if (trx->len == STORE32_LE(data_size + TRX_CRC32_DATA_OFFSET)) { - if (quiet < 2) - fprintf(stderr, "Header already fixed, exiting\n"); - close(fd); - return 0; - } - buf = malloc(data_size); if (!buf) { perror("malloc"); @@ -243,6 +236,14 @@ mtd_fixtrx(const char *mtd, size_t offset, size_t data_size) } data_size = to - buf; + if (trx->len == STORE32_LE(data_size + TRX_CRC32_DATA_OFFSET) && + trx->crc32 == STORE32_LE(crc32buf(buf, data_size))) { + if (quiet < 2) + fprintf(stderr, "Header already fixed, exiting\n"); + close(fd); + return 0; + } + trx->len = STORE32_LE(data_size + offsetof(struct trx_header, flag_version)); trx->crc32 = STORE32_LE(crc32buf(buf, data_size)); |