suitable IOCTL error code when device is in state IOCTL cannot performed

2012-08-12 Thread Antti Palosaari 

Subject says it all. Which one error value is most suitable / generic ?

Here are few ones I found which could be possible:

#define EPERM1  /* Operation not permitted */
#define EAGAIN  11  /* Try again */
#define EACCES  13  /* Permission denied */
#define EBUSY   16  /* Device or resource busy */
#define ENODATA 61  /* No data available */
#define ECANCELED   125 /* Operation Canceled */

regards
Antti

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Re: suitable IOCTL error code when device is in state IOCTL cannot performed

2012-08-12 Thread Mauro Carvalho Chehab 
Em 12-08-2012 13:38, Antti Palosaari escreveu:
 Subject says it all. Which one error value is most suitable / generic ?
 
 Here are few ones I found which could be possible:
 
 #define EPERM1  /* Operation not permitted */
 #define EAGAIN  11  /* Try again */
 #define EACCES  13  /* Permission denied */
 #define EBUSY   16  /* Device or resource busy */
 #define ENODATA 61  /* No data available */
 #define ECANCELED   125 /* Operation Canceled */

IMHO, EAGAIN, EBUSY or ENODATA are the most pertinent ones.

Regards,
Mauro
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