public inbox for devel@edk2.groups.io
 help / color / mirror / Atom feed
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


      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]

Reply instructions:

You may reply publicly to this message via plain-text email
using any one of the following methods:

* Save the following mbox file, import it into your mail client,
  and reply-to-list from there: mbox

  Avoid top-posting and favor interleaved quoting:
  https://en.wikipedia.org/wiki/Posting_style#Interleaved_style

* Reply using the --to, --cc, and --in-reply-to
  switches of git-send-email(1):

  git send-email \
    --in-reply-to=BF2CCE9263284D428840004653A28B6E54040713@SHSMSX103.ccr.corp.intel.com \
    --to=devel@edk2.groups.io \
    /path/to/YOUR_REPLY

  https://kernel.org/pub/software/scm/git/docs/git-send-email.html

* If your mail client supports setting the In-Reply-To header
  via mailto: links, try the mailto: link
Be sure your reply has a Subject: header at the top and a blank line before the message body.
This is a public inbox, see mirroring instructions
for how to clone and mirror all data and code used for this inbox