On 09/02/2014 09:25 AM, David Marchand wrote:
> When using ivshmem devices, notifications between guests can be sent as
> interrupts using a ivshmem-server (typical use described in documentation).
> The client is provided as a debug tool.
>
> Signed-off-by: Olivier Matz <olivier.matz@xxxxxxxxx>
> Signed-off-by: David Marchand <david.marchand@xxxxxxxxx>
> ---
> +/* parse the size of shm */
> +static int
> +parse_size(const char *val_str, size_t *val)
> +{
> + char *endptr;
> + unsigned long long tmp;
> +
> + errno = 0;
> + tmp = strtoull(val_str, &endptr, 0);
> + if ((errno == ERANGE && tmp == ULLONG_MAX) || (errno != 0 && tmp == 0)) {
> + return -1;
> + }
This is overly complex; usually, this is just done as:
if (errno)
return -1;
> +/* parse an unsigned int */
> +static int
> +parse_uint(const char *val_str, unsigned *val)
> +{
> + char *endptr;
> + unsigned long tmp;
> +
> + errno = 0;
> + tmp = strtoul(val_str, &endptr, 0);
> + if ((errno == ERANGE && tmp == ULONG_MAX) || (errno != 0 && tmp == 0)) {
> + return -1;
> + }
and again
> + if (endptr == val_str || endptr[0] != '\0') {
> + return -1;
> + }
> + *val = tmp;
> + return 0;
> +}
--
Eric Blake eblake redhat com +1-919-301-3266
Libvirt virtualization library http://libvirt.org
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