I wrote up a quick example to show that this should work specifically for
/proc/self/exe:
#define _GNU_SOURCE
#include
#include
#include
#include
int main(int argc, char** argv) {
int fd = open("/proc/self/exe", O_NOFOLLOW | O_PATH);
system("ls -la /proc/$PPID/fd/"
in the process of link resolution via the readlink() loop, we end up
with the same path as our candidate, we can return true. This avoids the
need to rely on any libc implementation of realpath(), since we're just
relying on the host kernel.
*Zach Riggle*
On Fri, Nov 10, 2017 at 5:44 PM, L
Day 17 Ping :)
*Zach Riggle*
On Tue, Nov 7, 2017 at 2:06 PM, Riku Voipio wrote:
> Hi,
>
> On Mon, Nov 06, 2017 at 08:17:44PM +0000, Zach Riggle wrote:
> > Ping! What needs to be done to move this forward? My current
> implementation
> > is compatible with musl.
&g
Ping! What needs to be done to move this forward? My current implementation
is compatible with musl.
On Thu, Nov 2, 2017 at 12:36 PM Peter Maydell
wrote:
> On 28 October 2017 at 06:14, Eric Blake wrote:
> > By definition, in linux-user, we ARE using glibc; therefore, you are
> > free to use all
Ping. What changes do I need to make to land this?
On Sat, Oct 28, 2017 at 12:49 AM Eric Blake wrote:
> On 10/27/2017 09:07 PM, Zach Riggle wrote:
> > Another case that may be more relevant for general QEMU use, is that the
> > current code fails if the software under test has poo
canonicalization issues and could be resolved with e.g.
canonicalize_file_name, but I'm not sure if QEMU allows GNU extensions --
and realpath() is portable.
*Zach Riggle*
On Fri, Oct 27, 2017 at 12:05 PM, Zach Riggle wrote:
> The symlink was just an easy test case. Doing cd pro
ly, this
will return the memory layout of QEMU, not the emulated memory layout of
the software under test.
*Zach Riggle*
On Fri, Oct 27, 2017 at 4:36 AM, Riku Voipio wrote:
> On Thu, Oct 26, 2017 at 04:06:22PM -0500, Zach Riggle wrote:
> > Friendly ping :)
> >
> > I'
Friendly ping :)
I've updated the patch with v2 which addresses the style issue
*Zach Riggle*
On Tue, Oct 24, 2017 at 10:34 PM, Zach Riggle wrote:
> Previously, it was possible to get a handle to the "real" /proc/self/mem
> by creating a symlink to it and opening the sy
602bc000 r-xp fc:01 270375
/usr/bin/qemu-arm-static
604bc000-6050f000 rw-p 002bc000 fc:01 270375
/usr/bin/qemu-arm-static
...
Signed-off-by: Zach Riggle
---
linux-user/syscall.c | 47 ---
1
From: Zach Riggle
Previously, it was possible to get a handle to the "real" /proc/self/mem
by creating a symlink to it and opening the symlink, or opening e.g.
"./mem" after chdir'ing to "/proc/self".
$ ln -s /proc/self self
$ cat self/maps
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