Re: [Qemu-devel] [PATCH v2] linux-user: fix is_proc_myself to check the paths via realpath

[Laurent Vivier <laurent@vivier.eu>]

Le 11/11/2017 à 02:48, Zach Riggle a écrit :
> I wrote up a quick example to show that this should work specifically for
> /proc/self/exe:
> 
> #define _GNU_SOURCE
> #include <sys/types.h>
> #include <sys/stat.h>
> #include <fcntl.h>
> #include <unistd.h>
> int main(int argc, char** argv) {
>     int fd = open("/proc/self/exe", O_NOFOLLOW | O_PATH);
>     system("ls -la /proc/$PPID/fd/");
> }
> 

And what about a readlink() in a loop until we cross "/proc/<pid>" (or not)?

Thanks,
Laurent