m here is
> that I need to assess with the updated headers where to place a new
> header. It seems I can't call elf64_newphdr again on the new_elf
> handle.
Yes, if you want to shuffle the phdrs around and/or insert headers then
you need to keep around copies of the original headers. You
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
Hi all,
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
(gdb) p/x
