Re: explain to me how this works...

[Greg Lindahl <lindahl@keyresearch.com>]

On Thu, Nov 14, 2002 at 09:12:51PM +0100, Ralf Baechle wrote:

> Unlikely to help him.  The return value 4183 of socket that he's observing
> is the syscall number of socket(2).

Thank you, I should have noticed that one right off.

My sprinkle of printks already tells me that strace is a liar - no
surprise there.

strace says:

socket(PF_PACKET, SOCK_DGRAM, 0)        = 4183
socket(PF_PACKET, SOCK_DGRAM, 0)        = 4183
socket(PF_PACKET, SOCK_DGRAM, 0)        = -1 EAFNOSUPPORT (Address family not 
supported by protocol)

printk says:

sys_socket returning 0
sys32_socket returning 0
sys_socket returning -124
sys32_socket returning -124

Note strace sees 3 syscalls. I only printk at the return statement, 
and there are 2 of those. I'll add more printks...

-- greg