From: Olivier Dion <d...@linutronix.de>
When the emulated process try to execve itself through /proc/self/exe,
QEMU user will be executed instead of the process.
The following short program demonstrated that:
----------------------------------------------------------------------
#include <stdio.h>
#include <string.h>
#include <unistd.h>
static char *ARGV0 = "STOP";
static char *ARGV1 = "-this-is-not-an-option";
int main(int argc, char *argv[], char *environ[])
{
(void)argc;
if (strcmp(argv[0], ARGV0) == 0)
return 0;
argv[0] = ARGV0;
argv[1] = ARGV1;
execve("/proc/self/exe", (char **const)argv,
(char **const)environ);
perror("execve");
return 1;
}
----------------------------------------------------------------------
Will output:
----------------------------------------------------------------------
qemu: unknown option 'this-is-not-an-option'
----------------------------------------------------------------------
Olivier Dion (1):
linux-user: Handle /proc/self/exe in syscall execve
linux-user/syscall.c | 13 ++++++++++++-
1 file changed, 12 insertions(+), 1 deletion(-)
--
2.22.0
