From: "Long, Qin" <qin.long@intel.com>
To: "Ni, Ruiyu" <ruiyu.ni@intel.com>,
"Zeng, Star" <star.zeng@intel.com>,
"edk2-devel@lists.01.org" <edk2-devel@lists.01.org>
Cc: "Ye, Ting" <ting.ye@intel.com>, "Zeng, Star" <star.zeng@intel.com>
Subject: Re: [PATCH] CryptoPkg/BaseCryptLib: Add error handling for time() wrapper
Date: Fri, 19 Jan 2018 07:21:30 +0000 [thread overview]
Message-ID: <BF2CCE9263284D428840004653A28B6E54040713@SHSMSX103.ccr.corp.intel.com> (raw)
In-Reply-To: <734D49CCEBEEF84792F5B80ED585239D5BB36F7D@SHSMSX104.ccr.corp.intel.com>
Yes, and the function comment were already there.
-----Original Message-----
From: Ni, Ruiyu
Sent: Friday, January 19, 2018 3:16 PM
To: Zeng, Star <star.zeng@intel.com>; Long, Qin <qin.long@intel.com>; edk2-devel@lists.01.org
Cc: Ye, Ting <ting.ye@intel.com>; Zeng, Star <star.zeng@intel.com>
Subject: RE: [PATCH] CryptoPkg/BaseCryptLib: Add error handling for time() wrapper
Qin,
How about add more comments to say the tick is calculated from 1970 first second?
Thanks/Ray
> -----Original Message-----
> From: edk2-devel [mailto:edk2-devel-bounces@lists.01.org] On Behalf Of
> Zeng, Star
> Sent: Friday, January 19, 2018 3:14 PM
> To: Long, Qin <qin.long@intel.com>; edk2-devel@lists.01.org
> Cc: Ye, Ting <ting.ye@intel.com>; Zeng, Star <star.zeng@intel.com>
> Subject: Re: [edk2] [PATCH] CryptoPkg/BaseCryptLib: Add error handling
> for
> time() wrapper
>
> Ok, got it.
>
> Reviewed-by: Star Zeng <star.zeng@intel.com>
>
> Thanks,
> Star
> -----Original Message-----
> From: Long, Qin
> Sent: Friday, January 19, 2018 3:12 PM
> To: Zeng, Star <star.zeng@intel.com>; edk2-devel@lists.01.org
> Cc: Ye, Ting <ting.ye@intel.com>
> Subject: RE: [PATCH] CryptoPkg/BaseCryptLib: Add error handling for
> time() wrapper
>
> It's legal to continue the calculation about the seconds elapsed since
> 1970.01.01 00:00:00.
>
>
> -----Original Message-----
> From: Zeng, Star
> Sent: Friday, January 19, 2018 3:10 PM
> To: Long, Qin <qin.long@intel.com>; edk2-devel@lists.01.org
> Cc: Ye, Ting <ting.ye@intel.com>; Zeng, Star <star.zeng@intel.com>
> Subject: RE: [PATCH] CryptoPkg/BaseCryptLib: Add error handling for
> time() wrapper
>
> What will happen if Time.Year == 1970? :)
>
> Thanks,
> Star
> -----Original Message-----
> From: Long, Qin
> Sent: Friday, January 19, 2018 3:05 PM
> To: edk2-devel@lists.01.org
> Cc: Zeng, Star <star.zeng@intel.com>; Ye, Ting <ting.ye@intel.com>;
> Long, Qin <qin.long@intel.com>
> Subject: [PATCH] CryptoPkg/BaseCryptLib: Add error handling for time()
> wrapper
>
> In time() wrapper implementation, the gRT->GetTime() call may be not
> available. This patch adds the extra error handling to avoid the
> potential dead loop.
>
> Cc: Star Zeng <star.zeng@intel.com>
> Cc: Ting Ye <ting.ye@intel.com>
> Contributed-under: TianoCore Contribution Agreement 1.0
> Signed-off-by: Qin Long <qin.long@intel.com>
> ---
> CryptoPkg/Library/BaseCryptLib/SysCall/TimerWrapper.c | 12
> ++++++++----
> 1 file changed, 8 insertions(+), 4 deletions(-)
>
> diff --git a/CryptoPkg/Library/BaseCryptLib/SysCall/TimerWrapper.c
> b/CryptoPkg/Library/BaseCryptLib/SysCall/TimerWrapper.c
> index 581b8fb028..95e0419640 100644
> --- a/CryptoPkg/Library/BaseCryptLib/SysCall/TimerWrapper.c
> +++ b/CryptoPkg/Library/BaseCryptLib/SysCall/TimerWrapper.c
> @@ -72,14 +72,18 @@ UINTN CumulativeDays[2][14] = { // ) time_t
> time (time_t *timer) {
> - EFI_TIME Time;
> - time_t CalTime;
> - UINTN Year;
> + EFI_STATUS Status;
> + EFI_TIME Time;
> + time_t CalTime;
> + UINTN Year;
>
> //
> // Get the current time and date information
> //
> - gRT->GetTime (&Time, NULL);
> + Status = gRT->GetTime (&Time, NULL); if (EFI_ERROR (Status) ||
> + (Time.Year < 1970)) {
> + return 0;
> + }
>
> //
> // Years Handling
> --
> 2.15.1.windows.2
>
> _______________________________________________
> edk2-devel mailing list
> edk2-devel@lists.01.org
> https://lists.01.org/mailman/listinfo/edk2-devel
prev parent reply other threads:[~2018-01-19 7:16 UTC|newest]
Thread overview: 6+ messages / expand[flat|nested] mbox.gz Atom feed top
2018-01-19 7:05 [PATCH] CryptoPkg/BaseCryptLib: Add error handling for time() wrapper Long Qin
2018-01-19 7:10 ` Zeng, Star
2018-01-19 7:12 ` Long, Qin
2018-01-19 7:14 ` Zeng, Star
2018-01-19 7:15 ` Ni, Ruiyu
2018-01-19 7:21 ` Long, Qin [this message]
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