as indicated in commit c5bf408ed6 "(ramips: fix image generation for mt76x8")
more rework was needed to fix the other issues.
Building on another machine, but using the same arch, showed
the application failing again for different reasons.
Fix this by completely rewriting the application, fixing following found issues:
- buffer overflows, resulting in stack corruption
- flaws in memory requirement calculations (too small, too large)
- memory leaks
- missing bounds checking on string handling
- non-reproducable images, by using unitilized memory in checksum calculation
- missing error handling, resulting in succes on specific image errors
- endianness errors when building on BE machines
- various minor build warnings
- documentation did not match the code actions (header item locations)
- allowing input to be decimal, hex or octal now
Signed-off-by: Koen Vandeputte <koen.vandeputte@ncentric.com>
Buildbot fails to generate images for targets also generating a
Sercomm binary with following error:
Opening file: /mnt/ramdisk/koen/firmware/builds/owrt_mt76x8/build_dir/target-mipsel_24kc_musl/linux-ramips_mt76x8/tmp/openwrt-ramips-mt76x8-netgear_r6120-squashfs-factory.img.rootfs.zip
Filesize: 3648606 .
mksercommfw: malloc.c:2427: sysmalloc: Assertion `(old_top == initial_top (av) && old_size == 0) || ((unsigned long) (old_size) >= MINSIZE && prev_inuse (old_top) && ((unsigned long) old_end & (pagesize - 1)) == 0)' failed.
Makefile:287: recipe for target '/mnt/ramdisk/koen/firmware/builds/owrt_mt76x8/build_dir/target-mipsel_24kc_musl/linux-ramips_mt76x8/tmp/openwrt-ramips-mt76x8-netgear_r6120-squashfs-factory.img' failed
Debugging using valgrind shows stack corruption due to a buffer overflow.
The author of the generator assumes the filename ends with "root",
while it should be "rootfs".
Fix this by accounting for the 2 missing characters which solves the build issues.
More work is required to cleanup this source, which will be done later on.
Reported-by: Hannu Nyman <hannu.nyman@iki.fi>
Signed-off-by: Koen Vandeputte <koen.vandeputte@ncentric.com>
This adds a tool to generate a firmware file accepted
by Netgear or sercomm devices.
They use a zip-packed rootfs with header and a custom
checksum. The generated Image can be flashed via the
nmrpflash tool or the webinterface of the router.
Signed-off-by: Ludwig Thomeczek <ledesrc@wxorx.net>
