Hi Florian,
The error -29 is -ESPIPE : Illegal seek.
Probably it comes from here:
if (offset > iob->io_pktlen)
{
ioberr("ERROR: offset is past the end of data: %u > %u\n",
offset, iob->io_pktlen);
return -ESPIPE;
}
Please try to enable CONFIG_IOB_DEBUG and see if the above error
message is printed. Then you can track why it is failing.
BR,
Alan
On 4/3/20, Florian Wehmeyer <flo...@gmx.net> wrote:
>
> Hi all,
>
> I need to update my app running on nuttx 8.2 system in a simple way,
> this is why I've chosen the
>
> "Release System with ELF Programs: No Symbol Tables" approach.
>
>
> My problem is the size of my elf file, it is up to 12K.
>
> This is basically because I've packed all the features into 1 task
> (network, file I/O, json, etc) because it would be more simple to update
> a single elf file rather than have a lot of different elf files for
> different tasks and having to maintain a "repository" of those tasks.
>
>
> My question is, is this somehow stupid to do? Is there a reason why I
> should avoid to load "bigger" elf-files?
>
> The system has enough RAM:
>
> nsh> free
> total used free largest
> Umem: 229072 17760 211312 211136
>
>
> What happens is, when the elf file is bigger than about 4K, the binary
> loader encounters a problem, independently on the config settings of the
> elf buffer sizes:
>
> CONFIG_ELF_STACKSIZE=10240
> CONFIG_ELF_BUFFERSIZE=256
> CONFIG_ELF_BUFFERINCR=32
>
>
> here's part of the debug output:
>
>
> elf_loadshdrs: Insufficient space in file for section header table
>
> elf_dumploadinfo: LOAD_INFO:
> elf_dumploadinfo: textalloc: 00000000
> elf_dumploadinfo: dataalloc: 00000000
> elf_dumploadinfo: textsize: 0
> elf_dumploadinfo: datasize: 0
> elf_dumploadinfo: filelen: 5360
> elf_dumploadinfo: filfd: 3
> elf_dumploadinfo: symtabidx: 0
> elf_dumploadinfo: strtabidx: 0
> elf_dumploadinfo: ELF Header:
> elf_dumploadinfo: e_ident: 7f 45 4c 46
> elf_dumploadinfo: e_type: 0001
> elf_dumploadinfo: e_machine: 0028
> elf_dumploadinfo: e_version: 00000001
> elf_dumploadinfo: e_entry: 00000555
> elf_dumploadinfo: e_phoff: 0
> elf_dumploadinfo: e_shoff: 5056
> elf_dumploadinfo: e_flags: 05000000
> elf_dumploadinfo: e_ehsize: 52
> elf_dumploadinfo: e_phentsize: 0
> elf_dumploadinfo: e_phnum: 0
> elf_dumploadinfo: e_shentsize: 40
> elf_dumploadinfo: e_shnum: 11
> elf_dumploadinfo: e_shstrndx: 8
> elf_loadbinary: Failed to load ELF program binary: -29
>
>
> Thanks a lot for any help!!
>
> Florian
>
>
>
>
>
> --
> Florian Wehmeyer
> TFW Tech Solutions
>
>
