#include <linux/types.h>
in the user space program.
AFAIK that should solve the problem.
Bhanu.
On 7/27/05, Vincenzo Mallozzi <vinjunior@xxxxxxxx> wrote:
> Hi all,
> I've some problems with the implementation of the ioctl in kernel module I'm
> developing.
> I've create three files:
>
> 1) the header "device.h ":
>
> #define MTPMC_IOC_MAGIC 254
> #define MTPMC_IOC_WRITE_USER_PID _IOW(MTPMC_IOC_MAGIC, 0, pid_t)
> #define MTPMC_IOC_WRITE_THREAD_PID _IOW(MTPMC_IOC_MAGIC, 1, pid_t)
> #define MTPMC_IOC_READ_INITIALIZE _IOR(MTPMC_IOC_MAGIC, 2, int)
> #define MTPMC_IOC_READ_NUM_THREAD _IOR(MTPMC_IOC_MAGIC, 3, int)
> #define MTPMC_IOC_RESTORE_NOT_WRITABLE _IO(MTPMC_IOC_MAGIC, 4)
> #define MTPMC_IOC_RESTORE_WRITABLE _IO(MTPMC_IOC_MAGIC, 5)
> #define MTPMC_IOC_TIMER_FUNCTION _IOW(MTPMC_IOC_MAGIC, 6, int)
>
> #define MTPMC_IOC_MAXNR 7
>
> 2) the kernel-space driver "device.c" which includes the header and implements
> a switch as follows:
>
> switch(cmd){
> case MTPMC_IOC_WRITE_USER_PID: /* nr == 1 */
> mtpmc_user = arg;
> break;
>
> case MTPMC_IOC_WRITE_THREAD_PID: /* nr == 2 */
> mtpmc_pid = arg;
> break;
>
> case MTPMC_IOC_READ_INITIALIZE: /* nr == 3 */
> return mtpmc_initialize();
> }
>
> 3) the user-space file "user.c" which includes the header and calls ioctl in
> this way:
>
> ioctl(fd, MTPMC_IOC_WRITE_USER_PID, getpid()); /
> ioctl(fd, MTPMC_IOC_WRITE_THREAD_PID, thread_pid);
> r = ioctl(fd, MTPMC_IOC_READ_INITIALIZE);
>
>
> Now! When I compile device.c things go well but when I try to compile the
> user-space programm with the command
>
> gcc -g -o user user.c
>
> occurre the errors:
>
> user.c:51: error: parse error before "pid_t"
> user.c:52: error: parse error before "pid_t"
> user.c:53: error: parse error before "int"
>
> Where I'm wrong?
> Thanks.
> Vincenzo Mallozzi
>
>
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