[CRIU] [PATCHv2] log: add gnu-styled output to stdout

[Pavel Emelyanov]

On 03/25/2016 03:33 PM, Dmitry Safonov wrote:
> On 03/25/2016 03:29 PM, Dmitry Safonov wrote:
>> Before this would open file named '-' as log:
>> ./criu/criu dump -t 20526 -o -
>> But now it will print log into stdout. Charming.
> I guess, it may be easilly dropped, if you want -
> because omitting '-o' option will lead to printing
> into stderr stream.
> But, anyway, someone as me may expect that
> '-o' should catch '-' to print to stdout.

Applied

>>
>> Signed-off-by: Dmitry Safonov <dsafonov at virtuozzo.com>
>> ---
>>   criu/log.c | 8 +++++++-
>>   1 file changed, 7 insertions(+), 1 deletion(-)
>>
>> diff --git a/criu/log.c b/criu/log.c
>> index 1435401abac5..6c5d807f8cd6 100644
>> --- a/criu/log.c
>> +++ b/criu/log.c
>> @@ -79,7 +79,13 @@ int log_init(const char *output)
>>   	gettimeofday(&start, NULL);
>>   	reset_buf_off();
>>   
>> -	if (output) {
>> +	if (output && !strncmp(output, "-", 2)) {
>> +		new_logfd = dup(STDOUT_FILENO);
>> +		if (new_logfd < 0) {
>> +			pr_perror("Cant't dup stdout stream");
>> +			return -1;
>> +		}
>> +	} else if (output) {
>>   		new_logfd = open(output, O_CREAT|O_TRUNC|O_WRONLY|O_APPEND, 0600);
>>   		if (new_logfd < 0) {
>>   			pr_perror("Can't create log file %s", output);
> 
>