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- #define _GNU_SOURCE
- #include <errno.h>
- #include <fcntl.h>
- #include <stdio.h>
- #include <stdlib.h>
- #include <sys/ioctl.h>
- #include <sys/stat.h>
- #include <sys/types.h>
- #include <unistd.h>
- #include "../ioctl.h"
- int main(int argc, char **argv)
- {
- int fd, arg_int, ret;
- lkmc_ioctl_struct arg_struct;
- if (argc < 2) {
- puts("Usage: ./prog <ioctl-file>");
- return EXIT_FAILURE;
- }
- fd = open(argv[1], O_RDONLY);
- if (fd == -1) {
- perror("open");
- return EXIT_FAILURE;
- }
- /* 0 */
- {
- arg_int = 1;
- ret = ioctl(fd, LKMC_IOCTL_INC, &arg_int);
- if (ret == -1) {
- perror("ioctl");
- return EXIT_FAILURE;
- }
- printf("arg = %d\n", arg_int);
- printf("ret = %d\n", ret);
- printf("errno = %d\n", errno);
- }
- puts("");
- /* 1 */
- {
- arg_struct.i = 1;
- arg_struct.j = 1;
- ret = ioctl(fd, LKMC_IOCTL_INC_DEC, &arg_struct);
- if (ret == -1) {
- perror("ioctl");
- return EXIT_FAILURE;
- }
- printf("arg = %d %d\n", arg_struct.i, arg_struct.j);
- printf("ret = %d\n", ret);
- printf("errno = %d\n", errno);
- }
- close(fd);
- return EXIT_SUCCESS;
- }
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