siginfo of traced child to parent process

siginfo of traced child to parent process

[Ranga Iyengar]

I wanted to know if there is a way to get the
siginfo_t of a child process from a parent process.
The child process is traced by the parent process
using ptrace system call and if the child is stopped
because of SIGSEGV or SIGFPE, the address of the
instruction that caused the exception is available to
the child from the signal handler thro' the siginfo
structure. Is there any way of getting this
info(siginfo) to the parent. The parent attaches to
the child in the same way 'gdb' attaches to the
debugged programs.

I'm using linux kernel 2.4.18

Thanks
Ron

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Re: siginfo of traced child to parent process

[Daniel Jacobowitz]

On Thu, Apr 10, 2003 at 02:41:41PM -0700, Ranga Iyengar wrote:
> I wanted to know if there is a way to get the
> siginfo_t of a child process from a parent process.
> The child process is traced by the parent process
> using ptrace system call and if the child is stopped
> because of SIGSEGV or SIGFPE, the address of the
> instruction that caused the exception is available to
> the child from the signal handler thro' the siginfo
> structure. Is there any way of getting this
> info(siginfo) to the parent. The parent attaches to
> the child in the same way 'gdb' attaches to the
> debugged programs.
> 
> I'm using linux kernel 2.4.18

There is in 2.5 - it's called PTRACE_GETSIGINFO.  There isn't in 2.4.18
though.

-- 
Daniel Jacobowitz
MontaVista Software                         Debian GNU/Linux Developer