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unwrap: support unwrapping tags with odd-sized clusters

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max 🍓
2025-03-01 19:28:17 +00:00
parent 1d11e6dce7
commit fbf686fd45
1 changed files with 3 additions and 5 deletions
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8
src/unwrap.c
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@@ -86,6 +86,8 @@ static int unwrap(
const struct ec3_tag_info *target_tag_info const struct ec3_tag_info *target_tag_info
= ec3_image_ioctx_get_tag_info_by_id(image, target_tag_ident); = ec3_image_ioctx_get_tag_info_by_id(image, target_tag_ident);
size_t tag_length = target_tag_info->tag_total_length; size_t tag_length = target_tag_info->tag_total_length;
size_t total_clusters;
ec3_tag_ioctx_get_nr_clusters(tag, &total_clusters);
printf("reading %zu bytes from tag %s...\n", tag_length, ident_str); printf("reading %zu bytes from tag %s...\n", tag_length, ident_str);
@@ -93,7 +95,7 @@ static int unwrap(
int ret = 0; int ret = 0;
FILE *outp = fopen("data.bin", "wb"); FILE *outp = fopen("data.bin", "wb");
for (size_t i = 0;; i++) { for (size_t i = 0; i < total_clusters; i++) {
size_t nr_read = 0; size_t nr_read = 0;
enum ec3_status status enum ec3_status status
= ec3_tag_ioctx_read_cluster(tag, i, buf, &nr_read); = ec3_tag_ioctx_read_cluster(tag, i, buf, &nr_read);
@@ -108,10 +110,6 @@ static int unwrap(
printf("read %zu bytes from cluster %zu\n", nr_read, i); printf("read %zu bytes from cluster %zu\n", nr_read, i);
fwrite(buf, 1, nr_read, outp); fwrite(buf, 1, nr_read, outp);
if (nr_read < c_info->img_cluster_size) {
break;
}
} }
free(buf); free(buf);