On 5/7/2021 10:31 AM, Eric Blake wrote:
> On 5/7/21 7:25 AM, Steve Sistare wrote:
>> Add a qemu_exec_requested() hook that causes the main loop to exit and
>> re-exec qemu using the same initial arguments. If /usr/bin/qemu-exec
>> exists, exec that instead. This is an optional site-specific trampoline
>> that may alter the environment before exec'ing the qemu binary.
>>
>> Signed-off-by: Steve Sistare <steven.sist...@oracle.com>
>> ---
>
>> +static void qemu_exec(void)
>> +{
>> + const char *helper = "/usr/bin/qemu-exec";
>> + const char *bin = !access(helper, X_OK) ? helper : argv_main[0];
>
> Reads awkwardly; I would have used '...= access(helper, X_OK) == 0 ?...'
Will fix.
>> +
>> + execvp(bin, argv_main);
>> + error_report("execvp failed, errno %d.", errno);
>
> error_report should not be used with a trailing dot.
Will fix. I was not sure because I see examples both ways, though no dot
prevails.
Perhaps it should be added to the style guide and checkpatch.
> Also, %d for errno is awkward, better is:
>
> error_report("execvp failed: %s", strerror(errno));
I shy away from strerror because it is not thread safe, but I see qemu uses it
extensively. Will fix.
>
>> + exit(1);
>
> We aren't consistent about use of EXIT_FAILED.
OK, I will use EXIT_FAILURE.
Thanks for reviewing.
- Steve
