From: Tom Lane <tgl@sss.pgh.pa.us>
To: Alvaro Herrera <alvherre@2ndquadrant.com>
Cc: Thomas Munro <thomas.munro@gmail.com>
Cc: Peter Eisentraut <peter.eisentraut@2ndquadrant.com>
Cc: pgsql-hackers <pgsql-hackers@postgresql.org>
Subject: Re: using explicit_bzero
Date: Wed, 17 Jul 2019 18:45:39 -0400
Message-ID: <25152.1563403539@sss.pgh.pa.us> (raw)
In-Reply-To: <20190717211931.GA906@alvherre.pgsql>
References: <20190717211931.GA906@alvherre.pgsql>
Alvaro Herrera <alvherre@2ndquadrant.com> writes:
> On 2019-Jul-11, Thomas Munro wrote:
>> Following a trail of crumbs beginning at OpenSSH's fallback
>> implementation of this[1], I learned that C11 has standardised
>> memset_s[2] for this purpose. Macs have memset_s but no
>> explicit_bzero. FreeBSD has both. I wonder if it'd be better to make
>> memset_s the function we use in our code, considering its standard
>> blessing and therefore likelihood of being available on every system
>> eventually.
> Sounds like a future-proof way would be to implement memset_s in
> src/port if absent from the OS (using explicit_bzero and other tricks),
> and use that.
+1 for using the C11-standard name, even if that's not anywhere
in the real world yet.
regards, tom lane
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To: pgsql-hackers@postgresql.org
Cc: tgl@sss.pgh.pa.us, alvherre@2ndquadrant.com, thomas.munro@gmail.com, peter.eisentraut@2ndquadrant.com
Subject: Re: using explicit_bzero
In-Reply-To: <25152.1563403539@sss.pgh.pa.us>
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