Re: [Qemu-devel] [PATCH] linux-user strace

[Stuart Anderson <anderson@netsweng.com>]

On Fri, 20 Jul 2007, Andreas Schwab wrote:

> Stuart Anderson <anderson@netsweng.com> writes:
>
>> Index: qemu/linux-user/syscall.c
>> ===================================================================
>> --- qemu.orig/linux-user/syscall.c	2007-07-19 01:42:43.000000000 -0400
>> +++ qemu/linux-user/syscall.c	2007-07-19 01:43:18.000000000 -0400
>> @@ -312,6 +312,11 @@
>>      return (unsigned long)ret >= (unsigned long)(-4096);
>>  }
>>
>> +char *target_strerror(int err)
>> +{
>> +	return strerror(host_to_target_errno(err));
>> +}
>> +
>
> That looks backwards.  strerror surely expects a host errno value, but
> host_to_target_errno returns the errno value for the target, doesn't it?

The function is called target_strerror() 8-). It is used to display the
errno string for the target, not the host. strerror() is just a simple
map, so it doesn't really care. Regular strace on qemu itself will give
the host error strings. This is used for gettign the error string of the
target.


                                 Stuart

Stuart R. Anderson                               anderson@netsweng.com
Network & Software Engineering                   http://www.netsweng.com/
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