int duet_print_list(int numtasks)
{
int duet_fd, i, ret = 0;
struct duet_ioctl_status_args *args;
size_t args_size;
if (numtasks <= 0 || numtasks > 65535) {
fprintf(stderr, "duet_print_list: invalid number of tasks\n");
return 1;
}
args_size = sizeof(struct duet_ioctl_status_args) + (numtasks *
sizeof(struct duet_task_attrs));
args = malloc(args_size);
if (!args) {
perror("duet_print_list: task list allocation failed");
return 1;
}
memset(args, 0, args_size);
args->size = sizeof(*args);
args->flags = DUET_STATUS_PRINT_LIST;
args->numtasks = numtasks;
/* Open the duet device */
duet_fd = open_duet_dev();
if (duet_fd == -1) {
fprintf(stderr, "Error: failed to open duet device\n");
return -1;
}
ret = ioctl(duet_fd, DUET_IOC_STATUS, args);
if (ret < 0) {
perror("duet_print_list: ioctl failed");
close_duet_dev(duet_fd);
goto out;
}
/* Print out the list we received */
fprintf(stdout, "Duet task listing:\n\n");
for (i = 0; i < args->numtasks; i++) {
if (!args->tasks[i].id)
break;
fprintf(stdout, "Task Id: %d\n", args->tasks[i].id);
fprintf(stdout, "Task fd: %d\n", args->tasks[i].fd);
fprintf(stdout, "Task name: %s\n", args->tasks[i].name);
PRINT_MASK(args->tasks[i].regmask);
fprintf(stdout, "Reg. path: %s\n\n", args->tasks[i].path);
}
fprintf(stdout, "Listed %d tasks.\n", i);
out:
free(args);
close_duet_dev(duet_fd);
return ret;
}
int duet_print_list(int numtasks)
{
int i, ret = 0;
struct duet_status_args *args;
size_t args_size;
if (numtasks <= 0 || numtasks > 65535) {
fprintf(stderr, "duet_print_list: invalid number of tasks\n");
return 1;
}
args_size = sizeof(struct duet_status_args) + (numtasks *
sizeof(struct duet_task_attrs));
args = malloc(args_size);
if (!args) {
perror("duet_print_list: task list allocation failed");
return 1;
}
memset(args, 0, args_size);
args->size = sizeof(*args);
args->numtasks = numtasks;
/* Call syscall x86_64 #329: duet_status */
ret = syscall(329, DUET_STATUS_PRINT_LIST, args);
if (ret < 0) {
perror("duet_print_list: syscall failed");
goto out;
}
/* Print out the list we received */
fprintf(stdout, "Duet task listing:\n\n");
for (i = 0; i < args->numtasks; i++) {
if (!args->tasks[i].id)
break;
fprintf(stdout, "Task Id: %d\n", args->tasks[i].id);
fprintf(stdout, "Task fd: %d\n", args->tasks[i].fd);
fprintf(stdout, "Task name: %s\n", args->tasks[i].name);
PRINT_MASK(args->tasks[i].regmask);
fprintf(stdout, "Reg. path: %s\n\n", args->tasks[i].path);
}
fprintf(stdout, "Listed %d tasks.\n", i);
out:
free(args);
return ret;
}
