bootimg.bbclass:iso: use mkisofs -iso-level 3 for large iso

There will be problems when rootfs.img is larger than 4GB:
mkisofs: Value too large for defined data type. File /path/to/iso/rootfs.img is too large for current mkisofs settings - ignoring

And will get a wrong iso.

Check the size of ${ISODIR}/rootfs.img, use mkisofs -iso-level 3
when it exceeds 3.8GB, the specification is 4G - 1 bytes, we need
leave a few space for other files.

[YOCTO #6449]

(From OE-Core rev: 40cdf918dc2507a1270a4d933b2c2f46a514d6e2)

Signed-off-by: Robert Yang <liezhi.yang@windriver.com>
Signed-off-by: Richard Purdie <richard.purdie@linuxfoundation.org>

1 files changed, 13 insertions, 2 deletions

diff --git a/meta/classes/bootimg.bbclass b/meta/classes/bootimg.bbclass
index 4abe00e944..605edc911e 100644
--- a/meta/classes/bootimg.bbclass
+++ b/meta/classes/bootimg.bbclass
@@ -136,19 +136,30 @@ build_iso() {
                 mkisofs_compress_opts="-r"
         fi
 
+        # Check the size of ${ISODIR}/rootfs.img, use mkisofs -iso-level 3
+        # when it exceeds 3.8GB, the specification is 4G - 1 bytes, we need
+        # leave a few space for other files.
+        mkisofs_iso_level=""
+        rootfs_img_size=`stat -c '%s' ${ISODIR}/rootfs.img`
+        # 4080218931 = 3.8 * 1024 * 1024 * 1024
+        if [ $rootfs_img_size -gt 4080218931 ]; then
+                bbnote "${ISODIR}/rootfs.img execeeds 3.8GB, using '-iso-level 3' for mkisofs"
+                mkisofs_iso_level="-iso-level 3"
+        fi
+
         if [ "${PCBIOS}" = "1" ] && [ "${EFI}" != "1" ] ; then
                 # PCBIOS only media
                 mkisofs -V ${BOOTIMG_VOLUME_ID} \
                         -o ${DEPLOY_DIR_IMAGE}/${IMAGE_NAME}.iso \
                         -b ${ISO_BOOTIMG} -c ${ISO_BOOTCAT} \
                         $mkisofs_compress_opts \
-                        ${MKISOFS_OPTIONS} ${ISODIR}
+                        ${MKISOFS_OPTIONS} $mkisofs_iso_level ${ISODIR}
         else
                 # EFI only OR EFI+PCBIOS
                 mkisofs -A ${BOOTIMG_VOLUME_ID} -V ${BOOTIMG_VOLUME_ID} \
                         -o ${DEPLOY_DIR_IMAGE}/${IMAGE_NAME}.iso \
                         -b ${ISO_BOOTIMG} -c ${ISO_BOOTCAT} \
-                        $mkisofs_compress_opts ${MKISOFS_OPTIONS} \
+                        $mkisofs_compress_opts ${MKISOFS_OPTIONS} $mkisofs_iso_level \
                         -eltorito-alt-boot -eltorito-platform efi \
                         -b efi.img -no-emul-boot \
                         ${ISODIR}