diff --git a/package/utils/bcm4908img/Makefile b/package/utils/bcm4908img/Makefile index ff504a8078..fbb91fba73 100644 --- a/package/utils/bcm4908img/Makefile +++ b/package/utils/bcm4908img/Makefile @@ -3,7 +3,7 @@ include $(TOPDIR)/rules.mk PKG_NAME:=bcm4908img -PKG_RELEASE:=2 +PKG_RELEASE:=3 PKG_FLAGS:=nonshared diff --git a/package/utils/bcm4908img/src/bcm4908img.c b/package/utils/bcm4908img/src/bcm4908img.c index f2023ced9f..240fe895d9 100644 --- a/package/utils/bcm4908img/src/bcm4908img.c +++ b/package/utils/bcm4908img/src/bcm4908img.c @@ -77,6 +77,7 @@ struct bcm4908img_tail { * 4. padding ├─ firmware * 5. rootfs ─┘ * 6. BCM4908 tail + * 7. (Optional) vendor tail */ struct bcm4908img_info { size_t cferom_offset; @@ -249,6 +250,16 @@ struct chk_header { char board_id[0]; }; +struct linksys_tail { + char magic[9]; + uint8_t version[8]; + char model[15]; + uint32_t crc32; + uint8_t padding[9]; + uint8_t signature[16]; + uint8_t reserved[192]; +}; + static bool bcm4908img_is_all_ff(const void *buf, size_t length) { const uint8_t *in = buf; @@ -264,6 +275,7 @@ static bool bcm4908img_is_all_ff(const void *buf, size_t length) static int bcm4908img_parse(FILE *fp, struct bcm4908img_info *info) { struct bcm4908img_tail *tail = &info->tail; + struct linksys_tail *linksys; struct chk_header *chk; struct stat st; uint8_t buf[1024]; @@ -297,6 +309,16 @@ static int bcm4908img_parse(FILE *fp, struct bcm4908img_info *info) { if (be32_to_cpu(chk->magic) == 0x2a23245e) info->cferom_offset = be32_to_cpu(chk->header_len); + fseek(fp, -sizeof(buf), SEEK_END); + if (fread(buf, 1, sizeof(buf), fp) != sizeof(buf)) { + fprintf(stderr, "Failed to read file header\n"); + return -EIO; + } + linksys = (void *)(buf + sizeof(buf) - sizeof(*linksys)); + if (!memcmp(linksys->magic, ".LINKSYS.", sizeof(linksys->magic))) { + info->tail_offset -= sizeof(*linksys); + } + /* Offsets */ for (info->bootfs_offset = info->cferom_offset;