[libvirt] [PATCH] openvz: fixed an config file parsing error

[Eric Blake]

On 09/03/2014 09:55 AM, Hongbin Lu wrote:

>> The OpenVZ driver reported an error on parsing some OpenVZ config
>> parameters (e.g. diskspace). This issue is due to the driver made
>> two incorrect assumptions about the value of the parameters:
>> 1. Assume paramaeter is just a number (e.g. 1024).
>> 2. Assume the number is an integer.
>> Actually, an OpenVZ config parameter may consists of a scalar and
>> a unit, and the scalar is not necessary an integer (e.g. 2.2G).
>> This patch is for fixing this issue.
>> ---

>>
>> +static int
>> +openvzParseParamUnit(char* str, openvzParamUnit *unit)
>> +{
>> +    int len = strlen(str);
>> +    if (len == 0)
>> +        return -1;
>> +
>> +    switch (str[len - 1]) {
>> +    case 'G':
>> +    case 'g':
>> +        str[len - 1] = '\0';
>> +        if (unit != NULL)
>> +            *unit = OPENVZ_PARAM_UNIT_GIGABYTE;
>> +        break;

This looks similar to the existing virScaleInteger (src/util/virutil.c)
and its wrapper vshCommandOptScaledInt (tools/virsh.c); any chance you
can reuse that code (maybe by making it more generic) instead of
reimplementing it from scratch?

-- 
Eric Blake   eblake redhat com    +1-919-301-3266
Libvirt virtualization library http://libvirt.org

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