From: Adhemerval Zanella Netto <adhemerval.zanella@linaro.org>
To: Yann Droneaud <ydroneaud@opteya.com>,
Wilco Dijkstra <Wilco.Dijkstra@arm.com>,
"libc-alpha@sourceware.org" <libc-alpha@sourceware.org>,
Yu Chien Peter Lin <peterlin@andestech.com>
Subject: Re: [PATCH v3 2/2] malloc: Do not clobber errno on __getrandom_nocancel (BZ #29624)
Date: Fri, 30 Sep 2022 13:37:18 -0300 [thread overview]
Message-ID: <d8bde79d-2dd4-30bb-c878-9a88c62101ef@linaro.org> (raw)
In-Reply-To: <55da3486-8246-c18f-4676-569c385b968d@opteya.com>
On 30/09/22 13:29, Yann Droneaud wrote:
> Hi,
>
> Le 30/09/2022 à 17:09, Wilco Dijkstra via Libc-alpha a écrit :
>> Hi Adhemerval,
>>
>> This looks good to me assuming Hurd is 32-bit only.
>>
>> Reviewed-by: Wilco Dijkstra<Wilco.Dijkstra@arm.com>
>>
>> Cheers,
>> Wilco
>>
>>
>> From: Adhemerval Zanella<adhemerval.zanella@linaro.org>
>> Use INTERNAL_SYSCALL_CALL instead of INLINE_SYSCALL_CALL. This
>> requires emulate the semantic for hurd call (so __arc4random_buf
>> uses the fallback).
>>
>> Checked on x86_64-linux-gnu.
>> ---
>> diff --git a/sysdeps/mach/hurd/not-cancel.h b/sysdeps/mach/hurd/not-cancel.h
>> index ae58b734e3..5d2d2b4b8a 100644
>> --- a/sysdeps/mach/hurd/not-cancel.h
>> +++ b/sysdeps/mach/hurd/not-cancel.h
>> @@ -25,6 +25,7 @@
>> #include <sys/wait.h>
>> #include <time.h>
>> #include <sys/uio.h>
>> +#include <sys/random.h>
>> #include <hurd.h>
>> #include <hurd/fd.h>
>> @@ -75,8 +76,15 @@ __typeof (__fcntl) __fcntl_nocancel;
>> #define __fcntl64_nocancel(...) \
>> __fcntl_nocancel (__VA_ARGS__)
>> -#define __getrandom_nocancel(buf, size, flags) \
>> - __getrandom (buf, size, flags)
>> +static inline int
>
>
> ssize_t
>
>
>> +__getrandom_nocancel (void *buf, size_t buflen, unsigned int flags)
>> +{
>> + int save_errno = errno;
>> + int r = __getrandom (buf, buflen, flags);
>
> ssize_t r
Ack.
next prev parent reply other threads:[~2022-09-30 16:37 UTC|newest]
Thread overview: 11+ messages / expand[flat|nested] mbox.gz Atom feed top
2022-09-29 19:27 [PATCH 1/2] stdlib: Fix __getrandom_nocancel type and arc4random usage (BZ #29638) Adhemerval Zanella
2022-09-29 19:27 ` [PATCH v3 2/2] malloc: Do not clobber errno on __getrandom_nocancel (BZ #29624) Adhemerval Zanella
2022-09-30 15:09 ` Wilco Dijkstra
2022-09-30 16:29 ` Yann Droneaud
2022-09-30 16:37 ` Adhemerval Zanella Netto [this message]
2022-10-01 12:21 ` Yu-Chien Peter Lin
2022-09-29 19:39 ` [PATCH 1/2] stdlib: Fix __getrandom_nocancel type and arc4random usage (BZ #29638) H.J. Lu
2022-09-29 19:54 ` Adhemerval Zanella Netto
2022-09-29 20:01 ` Andreas Schwab
2022-09-30 15:05 ` Wilco Dijkstra
2022-10-01 12:16 ` Yu-Chien Peter Lin
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-all 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=d8bde79d-2dd4-30bb-c878-9a88c62101ef@linaro.org \
--to=adhemerval.zanella@linaro.org \
--cc=Wilco.Dijkstra@arm.com \
--cc=libc-alpha@sourceware.org \
--cc=peterlin@andestech.com \
--cc=ydroneaud@opteya.com \
/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;
as well as URLs for read-only IMAP folder(s) and NNTP newsgroup(s).