+static int
+mtd_dump(const char *mtd, int part_offset, int size)
+{
+ int ret = 0, offset = 0;
+ int fd;
+ char *buf;
+
+ if (quiet < 2)
+ fprintf(stderr, "Dumping %s ...\n", mtd);
+
+ fd = mtd_check_open(mtd);
+ if(fd < 0) {
+ fprintf(stderr, "Could not open mtd device: %s\n", mtd);
+ return -1;
+ }
+
+ if (!size)
+ size = mtdsize;
+
+ if (part_offset)
+ lseek(fd, part_offset, SEEK_SET);
+
+ buf = malloc(erasesize);
+ if (!buf)
+ return -1;
+
+ do {
+ int len = (size > erasesize) ? (erasesize) : (size);
+ int rlen = read(fd, buf, len);
+
+ if (rlen < 0) {
+ if (errno == EINTR)
+ continue;
+ ret = -1;
+ goto out;
+ }
+ if (!rlen || rlen != len)
+ break;
+ 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:
+ close(fd);
+ return ret;
+}
+
+static int
+mtd_verify(const char *mtd, char *file)
+{
+ uint32_t f_md5[4], m_md5[4];
+ struct stat s;
+ md5_ctx_t ctx;
+ int ret = 0;
+ int fd;
+
+ if (quiet < 2)
+ fprintf(stderr, "Verifying %s against %s ...\n", mtd, file);
+
+ if (stat(file, &s) || md5sum(file, f_md5) < 0) {
+ fprintf(stderr, "Failed to hash %s\n", file);
+ return -1;
+ }
+
+ fd = mtd_check_open(mtd);
+ if(fd < 0) {
+ fprintf(stderr, "Could not open mtd device: %s\n", mtd);
+ return -1;
+ }
+
+ md5_begin(&ctx);
+ do {
+ char buf[256];
+ int len = (s.st_size > sizeof(buf)) ? (sizeof(buf)) : (s.st_size);
+ int rlen = read(fd, buf, len);
+
+ if (rlen < 0) {
+ if (errno == EINTR)
+ continue;
+ ret = -1;
+ goto out;
+ }
+ if (!rlen)
+ break;
+ md5_hash(buf, rlen, &ctx);
+ s.st_size -= rlen;
+ } while (s.st_size > 0);
+
+ md5_end(m_md5, &ctx);
+
+ fprintf(stderr, "%08x%08x%08x%08x - %s\n", m_md5[0], m_md5[1], m_md5[2], m_md5[3], mtd);
+ fprintf(stderr, "%08x%08x%08x%08x - %s\n", f_md5[0], f_md5[1], f_md5[2], f_md5[3], file);
+
+ ret = memcmp(f_md5, m_md5, sizeof(m_md5));
+ if (!ret)
+ fprintf(stderr, "Success\n");
+ else
+ fprintf(stderr, "Failed\n");
+
+out:
+ close(fd);
+ return ret;
+}
+