[PATCH] Assume that accept4 is available

[Florian Weimer]

On 04/19/2017 04:53 PM, Joseph Myers wrote:
> On Fri, 14 Apr 2017, Florian Weimer wrote:
> 
>> diff --git a/sysdeps/unix/sysv/linux/kernel-features.h b/sysdeps/unix/sysv/linux/kernel-features.h
>> index fd936c5..b981466 100644
>> --- a/sysdeps/unix/sysv/linux/kernel-features.h
>> +++ b/sysdeps/unix/sysv/linux/kernel-features.h
>> @@ -75,18 +75,11 @@
>>      architectures using a separate syscall rather than socketcall that
>>      syscall was only added later, and some architectures first had
>>      socketcall support then a separate syscall.  Define
>> -   __ASSUME_ACCEPT4_SOCKETCALL if glibc uses socketcall on this
>> -   architecture and accept4 is available through socketcall,
>>      __ASSUME_ACCEPT4_SYSCALL if it is available through a separate
>> -   syscall, __ASSUME_ACCEPT4_SYSCALL_WITH_SOCKETCALL if it became
>> +   syscall, and __ASSUME_ACCEPT4_SYSCALL_WITH_SOCKETCALL if it became
>>      available through a separate syscall at the same time as through
>> -   socketcall, and __ASSUME_ACCEPT4 if the accept4 function is known
>> -   to work.  */
>> -#ifdef __ASSUME_SOCKETCALL
>> -# define __ASSUME_ACCEPT4_SOCKETCALL	1
>> -#endif
>> +   socketcall.  */
>>   #define __ASSUME_ACCEPT4_SYSCALL	1
>> -#define __ASSUME_ACCEPT4	1
>>   
>>   /* Support for the FUTEX_CLOCK_REALTIME flag was added in 2.6.29.  */
>>   #define __ASSUME_FUTEX_CLOCK_REALTIME	1
> 
> By removing the description and definition of __ASSUME_ACCEPT4_SOCKETCALL,
> this loses the information about what __ASSUME_RECVMMSG_SOCKETCALL and
> __ASSUME_SENDMMSG_SOCKETCALL mean, since the comments on the macros for
> recvmmsg and sendmmsg define them by reference to the corresponding macros
> for accept4.

Sorry about that.  Should we restore the comment with the attached patch?

Thanks,
Florian
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