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| author | John Crispin <john@openwrt.org> | 2014-12-02 19:28:23 +0000 |
|---|---|---|
| committer | John Crispin <john@openwrt.org> | 2014-12-02 19:28:23 +0000 |
| commit | ff02ea36e0acd996f3374ad1814e2b131356c9e0 (patch) | |
| tree | 5d6527bb519b79a54b0f53809335b15b74ec9223 | |
| parent | 5331a85501a0dac917d7f46d0a4b9b7b397b5a1c (diff) | |
| download | mtk-20170518-ff02ea36e0acd996f3374ad1814e2b131356c9e0.zip mtk-20170518-ff02ea36e0acd996f3374ad1814e2b131356c9e0.tar.gz mtk-20170518-ff02ea36e0acd996f3374ad1814e2b131356c9e0.tar.bz2 | |
mtd: make the mtd dump call run properly on nand flash
Signed-off-by: John Crispin <blogic@openwrt.org>
SVN-Revision: 43503
| -rw-r--r-- | package/system/mtd/src/mtd.c | 23 |
1 files changed, 18 insertions, 5 deletions
diff --git a/package/system/mtd/src/mtd.c b/package/system/mtd/src/mtd.c index e0a90f6..db3fc80 100644 --- a/package/system/mtd/src/mtd.c +++ b/package/system/mtd/src/mtd.c @@ -276,8 +276,9 @@ mtd_erase(const char *mtd) static int mtd_dump(const char *mtd, int size) { - int ret = 0; + int ret = 0, offset = 0; int fd; + char *buf; if (quiet < 2) fprintf(stderr, "Dumping %s ...\n", mtd); @@ -288,9 +289,15 @@ mtd_dump(const char *mtd, int size) return -1; } + if (!size) + size = mtdsize; + + buf = malloc(erasesize); + if (!buf) + return -1; + do { - char buf[256]; - int len = (size > sizeof(buf)) ? (sizeof(buf)) : (size); + int len = (size > erasesize) ? (erasesize) : (size); int rlen = read(fd, buf, len); if (rlen < 0) { @@ -299,9 +306,15 @@ mtd_dump(const char *mtd, int size) ret = -1; goto out; } - if (!rlen) + if (!rlen || rlen != len) break; - write(1, buf, rlen); + if (mtd_block_is_bad(fd, offset)) { + fprintf(stderr, "skipping bad block at 0x%08x\n", offset); + } else { + size -= rlen; + write(1, buf, rlen); + } + offset += rlen; } while (size > 0); out: |