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-rw-r--r--package/utils/otrx/src/otrx.c21
1 files changed, 7 insertions, 14 deletions
diff --git a/package/utils/otrx/src/otrx.c b/package/utils/otrx/src/otrx.c
index 7b02977abb..d08507f685 100644
--- a/package/utils/otrx/src/otrx.c
+++ b/package/utils/otrx/src/otrx.c
@@ -284,7 +284,7 @@ static ssize_t otrx_create_align(FILE *trx, size_t curr_offset, size_t alignment
static int otrx_create_write_hdr(FILE *trx, struct trx_header *hdr) {
size_t bytes, length;
- uint8_t *buf;
+ uint8_t buf[1024];
uint32_t crc32;
hdr->magic = cpu_to_le32(TRX_MAGIC);
@@ -299,20 +299,13 @@ static int otrx_create_write_hdr(FILE *trx, struct trx_header *hdr) {
length = le32_to_cpu(hdr->length);
- buf = malloc(length);
- if (!buf) {
- fprintf(stderr, "Couldn't alloc %zu B buffer\n", length);
- return -ENOMEM;
- }
-
- fseek(trx, 0, SEEK_SET);
- bytes = fread(buf, 1, length, trx);
- if (bytes != length) {
- fprintf(stderr, "Couldn't read %zu B of data from %s\n", length, trx_path);
- return -ENOMEM;
+ crc32 = 0xffffffff;
+ fseek(trx, TRX_FLAGS_OFFSET, SEEK_SET);
+ length -= TRX_FLAGS_OFFSET;
+ while ((bytes = fread(buf, 1, otrx_min(sizeof(buf), length), trx)) > 0) {
+ crc32 = otrx_crc32(crc32, buf, bytes);
+ length -= bytes;
}
-
- crc32 = otrx_crc32(0xffffffff, buf + TRX_FLAGS_OFFSET, length - TRX_FLAGS_OFFSET);
hdr->crc32 = cpu_to_le32(crc32);
fseek(trx, 0, SEEK_SET);