diff options
| -rw-r--r-- | package/system/mtd/src/mtd.c | 17 |
1 files changed, 12 insertions, 5 deletions
diff --git a/package/system/mtd/src/mtd.c b/package/system/mtd/src/mtd.c index eda001e1d8..dae0514a0b 100644 --- a/package/system/mtd/src/mtd.c +++ b/package/system/mtd/src/mtd.c @@ -179,14 +179,21 @@ image_check(int imagefd, const char *mtd) { uint32_t magic; int ret = 1; + int bufread; + + while (buflen < sizeof(magic)) { + bufread = read(imagefd, buf + buflen, sizeof(magic) - buflen); + if (bufread < 1) + break; + + buflen += bufread; + } if (buflen < sizeof(magic)) { - buflen += read(imagefd, buf + buflen, sizeof(magic) - buflen); - if (buflen < sizeof(magic)) { - fprintf(stdout, "Could not get image magic\n"); - return 0; - } + fprintf(stdout, "Could not get image magic\n"); + return 0; } + magic = ((uint32_t *)buf)[0]; if (be32_to_cpu(magic) == TRX_MAGIC) |