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From: Cyrill Gorcunov <gorcunov@gmail.com>
To: Serge Petrenko <sergepetrenko@tarantool.org>
Cc: Mons Anderson <v.perepelitsa@corp.mail.ru>,
	tml <tarantool-patches@dev.tarantool.org>,
	Vladislav Shpilevoy <v.shpilevoy@tarantool.org>
Subject: Re: [Tarantool-patches] [PATCH v4 4/4] crash: report crash data to the feedback server
Date: Sat, 12 Dec 2020 20:07:34 +0300	[thread overview]
Message-ID: <20201212170734.GH544004@grain> (raw)
In-Reply-To: <20201212161947.GG544004@grain>

On Sat, Dec 12, 2020 at 07:19:47PM +0300, Cyrill Gorcunov wrote:
> On Fri, Dec 11, 2020 at 03:57:20PM +0300, Serge Petrenko wrote:
> > > +
> > > +	/*
> > > +	 * On linux there is new_utsname structure which
> > > +	 * encodes each field to __NEW_UTS_LEN + 1 => 64 + 1 = 65.
> > > +	 *
> > > +	 * So lets just reserve more data in advance: 5 fields
> > > +	 * 128 bytes each => 640 bytes.
> > > +	 */
> > > +	static_assert(sizeof(struct utsname) <= 640,
> > > +		      "utsname is bigger than expected");
> > 
> > 
> > This static assert fails on my mac.
> > Looks like `struct utsname` is 1280 bytes in size there.
> 
> Thanks, Serge! I'll force update the size.

Force pushed the update
---
	/*
	 * Lets reuse tail of the buffer as a temp space.
	 */
	struct utsname *uname_ptr = (void *)&tail[-sizeof(struct utsname)];
	if (p >= (char *)(void *)uname_ptr)
		goto out;

	if (uname(uname_ptr) != 0) {
		pr_syserr("uname call failed, ignore");
		memset(uname_ptr, 0, sizeof(struct utsname));
	}

  reply	other threads:[~2020-12-12 17:07 UTC|newest]

Thread overview: 38+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2020-12-10 16:18 [Tarantool-patches] [PATCH v4 0/4] crash: implement sending feedback Cyrill Gorcunov
2020-12-10 16:18 ` [Tarantool-patches] [PATCH v4 1/4] util: introduce strlcpy helper Cyrill Gorcunov
2020-12-11  7:34   ` Serge Petrenko
2020-12-11  7:58     ` Serge Petrenko
2020-12-11 10:04       ` Cyrill Gorcunov
2020-12-11 11:07         ` Serge Petrenko
2020-12-11 11:38           ` Cyrill Gorcunov
2020-12-14 22:54             ` Vladislav Shpilevoy
2020-12-14 22:54   ` Vladislav Shpilevoy
2020-12-15  8:47     ` Cyrill Gorcunov
2020-12-10 16:18 ` [Tarantool-patches] [PATCH v4 2/4] backtrace: allow to specify destination buffer Cyrill Gorcunov
2020-12-11  7:50   ` Serge Petrenko
2020-12-10 16:18 ` [Tarantool-patches] [PATCH v4 3/4] crash: move fatal signal handling in Cyrill Gorcunov
2020-12-11  9:31   ` Serge Petrenko
2020-12-11 10:38     ` Cyrill Gorcunov
2020-12-11 11:12       ` Serge Petrenko
2020-12-14 22:54   ` Vladislav Shpilevoy
2020-12-15  8:16     ` Cyrill Gorcunov
2020-12-20 14:48       ` Vladislav Shpilevoy
2020-12-20 15:49         ` Cyrill Gorcunov
2020-12-20 16:07           ` Vladislav Shpilevoy
2020-12-20 16:58             ` Cyrill Gorcunov
2020-12-20 15:45   ` Vladislav Shpilevoy
2020-12-10 16:18 ` [Tarantool-patches] [PATCH v4 4/4] crash: report crash data to the feedback server Cyrill Gorcunov
2020-12-11 12:57   ` Serge Petrenko
2020-12-12 16:19     ` Cyrill Gorcunov
2020-12-12 17:07       ` Cyrill Gorcunov [this message]
2020-12-14  9:41         ` Serge Petrenko
2020-12-14 22:54   ` Vladislav Shpilevoy
2020-12-16 11:16     ` Cyrill Gorcunov
2020-12-16 20:31       ` Cyrill Gorcunov
2020-12-20 15:16         ` Vladislav Shpilevoy
2020-12-20 18:26           ` Cyrill Gorcunov
2020-12-20 14:48       ` Vladislav Shpilevoy
2020-12-20 18:21         ` Cyrill Gorcunov
2020-12-20 18:41           ` Vladislav Shpilevoy
2020-12-20 19:16             ` Cyrill Gorcunov
2020-12-21 17:01               ` Vladislav Shpilevoy

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