linux-kernel - Re: Re: [PATCH v3 2/2] Use common localtime/gmtime in fat_time

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Date:	Mon, 27 Jul 2009 11:21:10 +0800
From:	Zhaolei <zhaolei@...fujitsu.com>
To:	OGAWA Hirofumi <hirofumi@...l.parknet.co.jp>
CC:	Andrew Morton <akpm@...ux-foundation.org>,
	Pavel Machek <pavel@....cz>, mingo@...e.hu, tglx@...utronix.de,
	linux-kernel@...r.kernel.org
Subject: Re: Re: [PATCH v3 2/2] Use common localtime/gmtime in fat_time_unix2fat()

OGAWA Hirofumi wrote:
> Zhaolei <zhaolei@...fujitsu.com> writes:
> 
>> +	if (sbi->options.tz_utc) {
>> +		gmtime_r(ts->tv_sec, &tm);
>> +	} else {
>> +		localtime_r(ts->tv_sec, &tm);
>> +	}
> 
> Missing error check.
> 
>> -	/* Jan 1 GMT 00:00:00 1980. But what about another time zone? */
>> -	if (second < UNIX_SECS_1980) {
>> +	/*  FAT can only support year between 1980 to 2107 */
>> +	if (tm.tm_year < 1980 - 1900) {
>>  		*time = 0;
>>  		*date = cpu_to_le16((0 << 9) | (1 << 5) | 1);
>>  		if (time_cs)
>>  			*time_cs = 0;
>>  		return;
>>  	}
>> -#if BITS_PER_LONG == 64
>> -	if (second >= UNIX_SECS_2108) {
>> +	if (tm.tm_year > 2107 - 1900) {
>>  		*time = cpu_to_le16((23 << 11) | (59 << 5) | 29);
>>  		*date = cpu_to_le16((127 << 9) | (12 << 5) | 31);
>>  		if (time_cs)
>>  			*time_cs = 199;
>>  		return;
>>  	}
>> -#endif
> 
> I think tm.tm_year is undefine in case of the error.

Hello, Ogawa-san:

Thanks for your review.
I'll fix them

Thanks
Zhaolei


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