On 06/17/2013 02:15 PM, Michal Privoznik wrote:
> On 17.06.2013 10:34, Ján Tomko wrote:
>> Just to silence Coverity:
>>
>> Event check_return:
>> Calling function "virBufferTrim(virBufferPtr, char const *, int)"
>> without checking return value (as is done elsewhere 5 out of 6 times).
>> ---
>> src/node_device/node_device_udev.c | 5 ++---
>> src/rpc/virnetsshsession.c | 3 +--
>> 2 files changed, 3 insertions(+), 5 deletions(-)
>>
>> diff --git a/src/node_device/node_device_udev.c b/src/node_device/node_device_udev.c
>> index bb58415..a37989a 100644
>> --- a/src/node_device/node_device_udev.c
>> +++ b/src/node_device/node_device_udev.c
>> @@ -370,9 +370,8 @@ udevLogFunction(struct udev *udev ATTRIBUTE_UNUSED,
>> const char *format = NULL;
>>
>> virBufferAdd(&buf, fmt, -1);
>> - virBufferTrim(&buf, "\n", -1);
>> -
>> - format = virBufferContentAndReset(&buf);
>> + if (virBufferTrim(&buf, "\n", -1) >= 0)
>> + format = virBufferContentAndReset(&buf);
>>
>> virLogVMessage(VIR_LOG_FROM_LIBRARY,
>> virLogPriorityFromSyslog(priority),
>> diff --git a/src/rpc/virnetsshsession.c b/src/rpc/virnetsshsession.c
>> index b6aedc8..2299871 100644
>> --- a/src/rpc/virnetsshsession.c
>> +++ b/src/rpc/virnetsshsession.c
>> @@ -362,9 +362,8 @@ virNetSSHCheckHostKey(virNetSSHSessionPtr sess)
>> * we have to use a *MAGIC* constant. */
>> for (i = 0; i < 16; i++)
>> virBufferAsprintf(&buff, "%02hhX:", keyhash[i]);
>> - virBufferTrim(&buff, ":", 1);
>>
>> - if (virBufferError(&buff) != 0) {
>> + if (virBufferTrim(&buff, ":", 1) < 0) {
>> virReportOOMError();
>> return -1;
>> }
>>
>
> Shouldn't we make virBufferTrim call virBufferSetError instead? I think
> it's a better approach, as it fits to calling scheme of other virBuffer*
> functions better:
Is it really an error if you can't find a string to trim?
Or we could introduce another version of virBufferTrim, without a return
value, to use anywhere we don't care about the return value (i.e. outside the
tests :))
Jan
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