Re: [PATCH] reiserfs: check/extend buffer length for printing functions

[Chen Gang <gang.chen@asianux.com>]

On 07/18/2013 12:28 PM, Chen Gang wrote:
>  
>>  	strcpy(fmt1, fmt);
>> @@ -199,46 +214,51 @@ static void prepare_error_buf(const char *fmt, va_list args)
>>  	while ((k = is_there_reiserfs_struct(fmt1, &what)) != NULL) {
>>  		*k = 0;
>>  
>> -		p += vsprintf(p, fmt1, args);
>> +		p += vsnprintf(p, left, fmt1, args);

At least, need use vscnprintf() instead of vsnprintf(), since we need
the real written length return.

>> +		left = REISERFS_ERR_BUF_LEFT(p, error_buf);
>>  
>>  		switch (what) {
>>  		case 'k':
>> -			sprintf_le_key(p, va_arg(args, struct reiserfs_key *));
>> +			sprintf_le_key(p, left,
>> +				       va_arg(args, struct reiserfs_key *));
>>  			break;
>>  		case 'K':
>> -			sprintf_cpu_key(p, va_arg(args, struct cpu_key *));
>> +			sprintf_cpu_key(p, left,
>> 


-- 
Chen Gang