[Top][All Lists]
[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index]
RE : [lwip-users] LWIP_COMPAT_SOCKETS in sockets.h
From: |
Frédéric BERNON |
Subject: |
RE : [lwip-users] LWIP_COMPAT_SOCKETS in sockets.h |
Date: |
Wed, 6 Sep 2006 17:13:56 +0200 |
Hi Kieran,
Yes, read, write and close are usually used for files in "unistd.h". So, if in
a same code, you have to use files and sockets, there is a problem. You got
compilation errors like :
"...\include\unistd.h (89) : error: declaration is incompatible with "int
lwip_write(int, void *, int)" (declared at line 256 of "C:\lwip\sockets.h") "
I belive that close, read and write functions are defined by POSIX.1 . In my
"unistd.h" file, write is declared as :
extern ssize_t write(int fildes, const void *buf, size_t nbyte);
But decide if a call to write() (by example) use the IP stack or the storage
filesystem is done by a layer between ip stack and application, and not
directly from ip stack (it is based on a internal "file descriptor" field).
====================================
Frédéric BERNON
HYMATOM SA
Chef de projet informatique
Microsoft Certified Professional
Tél. : +33 (0)4-67-87-61-10
Fax. : +33 (0)4-67-70-85-44
Email : address@hidden
Web Site : http://www.hymatom.fr
====================================
-----Message d'origine-----
De : address@hidden [mailto:address@hidden De la part de Kieran Mansley
Envoyé : mercredi 6 septembre 2006 16:48
À : Mailing list for lwIP users
Objet : Re: [lwip-users] LWIP_COMPAT_SOCKETS in sockets.h
On Wed, 2006-09-06 at 16:30 +0200, Frédéric BERNON wrote:
> I have got some problems with "read", "write" and "close" defines in
> the "#if LWIP_COMPAT_SOCKETS" in sockets.h. These defines cause a
> compiler error due to same names than my "real" OS calls (in this OS -
> tmOsal/pSOS - there is a layer which wrap calls to the correct "IO
> driver"). I simply comment them, but wouldn't it be nicer to add a
> #define like "LWIP_IO_SOCKETS" in opt.h to include or not include
> these defines?
Why are read, write, and close special cases? Because they can apply to things
other than sockets perhaps? Seems odd to #define some of the functions to
standard names, but leave others as lwip_<blah>()
Kieran
_______________________________________________
lwip-users mailing list
address@hidden http://lists.nongnu.org/mailman/listinfo/lwip-users
- RE : [lwip-users] LWIP_COMPAT_SOCKETS in sockets.h,
Frédéric BERNON <=