| From: | Tom Lane <tgl(at)sss(dot)pgh(dot)pa(dot)us> |
|---|---|
| To: | Alvaro Herrera <alvherre(at)2ndquadrant(dot)com> |
| Cc: | Thomas Munro <thomas(dot)munro(at)gmail(dot)com>, Peter Eisentraut <peter(dot)eisentraut(at)2ndquadrant(dot)com>, pgsql-hackers <pgsql-hackers(at)postgresql(dot)org> |
| Subject: | Re: using explicit_bzero |
| Date: | 2019-07-17 22:45:39 |
| Message-ID: | 25152.1563403539@sss.pgh.pa.us |
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| Lists: | pgsql-hackers |
Alvaro Herrera <alvherre(at)2ndquadrant(dot)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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