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use MEMGETBADBLOCK to look for bad blocks when reading MTD partitions

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This commit is contained in:
Doug Zongker 2009-12-14 18:03:27 -08:00
parent c652e41d91
commit 17a47098d2
1 changed files with 12 additions and 5 deletions
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17
mtdutils/mtdutils.c
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@ -283,19 +283,26 @@ static int read_block(const MtdPartition *partition, int fd, char *data)
return -1;
}
off_t pos = lseek(fd, 0, SEEK_CUR);
loff_t pos = lseek64(fd, 0, SEEK_CUR);
ssize_t size = partition->erase_size;
int mgbb;
while (pos + size <= (int) partition->size) {
if (lseek(fd, pos, SEEK_SET) != pos || read(fd, data, size) != size) {
fprintf(stderr, "mtd: read error at 0x%08lx (%s)\n",
if (lseek64(fd, pos, SEEK_SET) != pos || read(fd, data, size) != size) {
fprintf(stderr, "mtd: read error at 0x%08llx (%s)\n",
pos, strerror(errno));
} else if (ioctl(fd, ECCGETSTATS, &after)) {
fprintf(stderr, "mtd: ECCGETSTATS error (%s)\n", strerror(errno));
return -1;
} else if (after.failed != before.failed) {
fprintf(stderr, "mtd: ECC errors (%d soft, %d hard) at 0x%08lx\n",
fprintf(stderr, "mtd: ECC errors (%d soft, %d hard) at 0x%08llx\n",
after.corrected - before.corrected,
after.failed - before.failed, pos);
} else if ((mgbb = ioctl(fd, MEMGETBADBLOCK, &pos))) {
fprintf(stderr,
"mtd: MEMGETBADBLOCK returned %d at 0x%08llx (errno=%d)\n",
mgbb, pos, errno);
} else {
int i;
for (i = 0; i < size; ++i) {
@ -303,7 +310,7 @@ static int read_block(const MtdPartition *partition, int fd, char *data)
return 0; // Success!
}
}
fprintf(stderr, "mtd: read all-zero block at 0x%08lx; skipping\n",
fprintf(stderr, "mtd: read all-zero block at 0x%08llx; skipping\n",
pos);
}