* some defines I couldnt understand '_IOC_NONE 1U'
@ 2011-06-18 15:39 Daniel Redway
2011-06-18 16:00 ` david kol.
0 siblings, 1 reply; 2+ messages in thread
From: Daniel Redway @ 2011-06-18 15:39 UTC (permalink / raw)
To: kernelnewbies
Hello
I dont understand what means 'U' character. I found this defines in
asm/ioctl.h file.
Thanks
#define _IOC_NONE 1U
#define _IOC_READ 2U
#define _IOC_WRITE 4U
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* some defines I couldnt understand '_IOC_NONE 1U'
2011-06-18 15:39 some defines I couldnt understand '_IOC_NONE 1U' Daniel Redway
@ 2011-06-18 16:00 ` david kol.
0 siblings, 0 replies; 2+ messages in thread
From: david kol. @ 2011-06-18 16:00 UTC (permalink / raw)
To: kernelnewbies
Hello,
its an unsigned constant.
david
On Sat, Jun 18, 2011 at 06:39:45PM +0300, Daniel Redway wrote:
> Hello
>
> I dont understand what means 'U' character. I found this defines in
> asm/ioctl.h file.
> Thanks
>
> #define _IOC_NONE 1U
> #define _IOC_READ 2U
> #define _IOC_WRITE 4U
> _______________________________________________
> Kernelnewbies mailing list
> Kernelnewbies at kernelnewbies.org
> http://lists.kernelnewbies.org/mailman/listinfo/kernelnewbies
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2011-06-18 15:39 some defines I couldnt understand '_IOC_NONE 1U' Daniel Redway
2011-06-18 16:00 ` david kol.
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