On Wed, 2019-06-26 at 20:01 +, Sasha Da Rocha Pinheiro wrote:
> So, I need to write an elf file. I have an open Elf * handle with
> read only permission. I then need to update the program headers and
> next add a new program header entry.
> For that we create an Elf * handle with write permissi
On Tue, 2019-06-25 at 22:09 +, Sasha Da Rocha Pinheiro wrote:
>
> What happens if I call elf64_newphdr() on the same Elf * but with
> different size_t __cnt?
It creates a new phdr table for the Elf with cnt entries, whether or
not the phdr table existed or not. If cnt is zero any existing
utils-devel@sourceware.org
Subject: Re: Elf64_Phdr
What happens if I call elf64_newphdr() on the same Elf * but with different
size_t __cnt?
What happens to the previous headers?
Sasha
From: Mark Wielaard
Sent: Tuesday, June 25, 2019 12:56:04 AM
To: Sasha Da Rocha Pinheir
Subject: Re: Elf64_Phdr
On Tue, 2019-06-25 at 05:22 +, Sasha Da Rocha Pinheiro wrote:
> Oh, of course, that might be it.
>
> Do you know if when it's open with write permission, changes will be
> mapped back to the file?
That depends on whether it is
On Tue, 2019-06-25 at 05:22 +, Sasha Da Rocha Pinheiro wrote:
> Oh, of course, that might be it.
>
> Do you know if when it's open with write permission, changes will be
> mapped back to the file?
That depends on whether it is opened with mmap MAP_PRIVATE
(ELF_C_READ_MMAP_PRIVATE,) or
Oh, of course, that might be it.
Do you know if when it's open with write permission, changes will be mapped
back to the file?
Thanks,
Sasha
From: Frank Ch. Eigler
Sent: Monday, June 24, 5:06 PM
Subject: Re: Elf64_Phdr
To: Sasha Da Rocha Pinheiro
Hi -
> If I have a Elf64_Phdr, why can't I straight change its elements, like, I'm
> getting seg fault when trying to do:
> (see gdb output)
>
> ... received signal SIGSEGV, Segmentation fault.
> ...
> 957 oldPhdr->p_vaddr = 0x1235;
> (gdb) p/x oldPhdr
> $11 = 0x3ffb4bf0040
The elf_begin(
