On Tue, 2024-11-26 at 13:51 -0800, Andrii Nakryiko wrote: [...] > > When I tried 'data->d_type = ELF_T_WORD' + gelf_xlatetom() snippet > > suggested by Tony Ambardar some time ago, I got a write protection error. > > Concluded that this is so, because file is opened in O_RDONLY mode. > > Ok, maybe don't follow my words *exactly*, just in spirit ;) I see > there is elf_getdata_rawchunk() API in libelf, which seems useful: > > /* Get data translated from a chunk of the file contents as section data > would be for TYPE. The resulting Elf_Data pointer is valid until > elf_end (ELF) is called. */ > extern Elf_Data *elf_getdata_rawchunk (Elf *__elf, > int64_t __offset, size_t __size, > Elf_Type __type); > > I don't know the surrounding code, I was just hoping to leverage > libelf's byte swapping support (which I think I learned from Tony as > well). But if it's too inconvenient, so be it. I missed this API, it works and makes the patch much smaller, thank you for finding it.
