int duet_deregister(int duet_fd, int tid)
{
int ret = 0;
struct duet_ioctl_cmd_args args;
if (duet_fd == -1) {
fprintf(stderr, "duet: failed to open duet device\n");
return -1;
}
memset(&args, 0, sizeof(args));
args.cmd_flags = DUET_DEREGISTER;
args.tid = tid;
ret = ioctl(duet_fd, DUET_IOC_CMD, &args);
if (ret < 0)
perror("duet: tasks deregister ioctl error");
if (args.ret)
duet_dbg(stdout, "Error deregistering task (ID %d).\n", args.tid);
else
duet_dbg(stdout, "Successfully deregistered task (ID %d).\n", args.tid);
return (ret < 0) ? ret : args.ret;
}
int duet_register(const char *name, __u32 regmask, const char *path)
{
int duet_fd, ret = 0;
struct duet_ioctl_init_args args;
args.size = sizeof(args);
memcpy(args.name, name, NAME_MAX);
args.regmask = regmask;
memcpy(args.path, path, PATH_MAX);
/* 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_INIT, &args);
if (ret < 0)
perror("duet_register: ioctl failed");
if (!ret)
duet_dbg(stdout, "Error registering task %s.\n", name);
else
duet_dbg(stdout, "Successfully registered task %s.\n", name);
close_duet_dev(duet_fd);
return ret;
}
int duet_register(int duet_fd, const char *path, __u32 regmask, __u32 bitrange,
const char *name, int *tid)
{
int ret = 0;
struct duet_ioctl_cmd_args args;
if (duet_fd == -1) {
fprintf(stderr, "duet: failed to open duet device\n");
return -1;
}
memset(&args, 0, sizeof(args));
args.cmd_flags = DUET_REGISTER;
memcpy(args.name, name, DUET_MAX_NAME);
args.bitrange = bitrange;
args.regmask = regmask;
memcpy(args.path, path, DUET_MAX_PATH);
ret = ioctl(duet_fd, DUET_IOC_CMD, &args);
if (ret < 0)
perror("duet: tasks register ioctl error");
*tid = args.tid;
if (args.ret)
duet_dbg(stdout, "Error registering task (ID %d).\n", args.tid);
else
duet_dbg(stdout, "Successfully registered task (ID %d).\n", args.tid);
return (ret < 0) ? ret : args.ret;
}
int duet_unset_done(int duet_fd, int tid, __u64 idx, __u32 count)
{
int ret = 0;
struct duet_ioctl_cmd_args args;
if (duet_fd == -1) {
fprintf(stderr, "duet: failed to open duet device\n");
return -1;
}
memset(&args, 0, sizeof(args));
args.cmd_flags = DUET_UNSET_DONE;
args.tid = tid;
args.itmidx = idx;
args.itmnum = count;
ret = ioctl(duet_fd, DUET_IOC_CMD, &args);
if (ret < 0)
perror("duet: unmark ioctl error");
duet_dbg("Removed blocks [%llu, %llu] to task #%d (ret = %u).\n",
args.itmidx, args.itmidx + args.itmnum, args.tid, args.ret);
return (ret < 0) ? ret : args.ret;
}
int duet_check_done(int duet_fd, int tid, __u64 idx, __u32 count)
{
int ret = 0;
struct duet_ioctl_cmd_args args;
if (duet_fd == -1) {
fprintf(stderr, "duet: failed to open duet device\n");
return -1;
}
memset(&args, 0, sizeof(args));
args.cmd_flags = DUET_CHECK_DONE;
args.tid = tid;
args.itmidx = idx;
args.itmnum = count;
ret = ioctl(duet_fd, DUET_IOC_CMD, &args);
if (ret < 0)
perror("duet: check ioctl error");
duet_dbg("Blocks [%llu, %llu] in task #%d were %sset.\n",
args.itmidx, args.itmidx + args.itmnum, args.tid,
args.ret ? "" : "not ");
return (ret < 0) ? ret : args.ret;
}
int duet_set_done(struct duet_uuid uuid)
{
int duet_fd, ret = 0;
struct duet_ioctl_bmap_args args;
args.size = sizeof(args);
args.flags = DUET_BMAP_SET;
args.uuid = uuid;
/* 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_BMAP, &args);
if (ret < 0)
perror("duet_set_done: ioctl failed");
if (!ret)
duet_dbg("Added (ino%lu, gen%u) to task %d\n",
args.uuid.ino, args.uuid.gen, args.uuid.tid);
close_duet_dev(duet_fd);
return ret;
}
/* Caller needs to free returned path */
char *duet_get_path(struct duet_uuid uuid)
{
int duet_fd, ret;
char *path;
struct duet_ioctl_gpath_args args;
path = calloc(PATH_MAX, sizeof(char));
if (!path)
return path;
args.size = sizeof(args);
args.uuid = uuid;
args.path[0] = '\0';
/* Open the duet device */
duet_fd = open_duet_dev();
if (duet_fd == -1) {
fprintf(stderr, "Error: failed to open duet device\n");
free(path);
return NULL;
}
ret = ioctl(duet_fd, DUET_IOC_GPATH, &args);
if (ret < 0)
perror("duet_get_path: ioctl failed");
if (!ret) {
duet_dbg("(ino%lu, gen%u) was matched to path %s\n",
args.uuid.ino, args.uuid.gen, args.path);
memcpy(path, args.path, PATH_MAX);
}
close_duet_dev(duet_fd);
return path;
}
int duet_check_done(struct duet_uuid uuid)
{
int duet_fd, ret = 0;
struct duet_ioctl_bmap_args args;
args.size = sizeof(args);
args.flags = DUET_BMAP_CHECK;
args.uuid = uuid;
/* 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_BMAP, &args);
if (ret < 0)
perror("duet_check_done: ioctl failed");
if (ret >= 0)
duet_dbg("(ino%lu, gen%u) in task %d is %sset (ret%d)\n",
args.uuid.ino, args.uuid.gen, args.uuid.tid,
(ret == 1) ? "" : "not ", ret);
close_duet_dev(duet_fd);
return ret;
}
int duet_register(const char *name, __u32 regmask, const char *path)
{
int ret = 0;
/* Call syscall x86_64 #330: duet_init */
ret = syscall(330, name, regmask, path);
if (ret < 0)
perror("duet_register: syscall failed");
if (!ret)
duet_dbg(stdout, "Error registering task %s.\n", name);
else
duet_dbg(stdout, "Successfully registered task %s.\n", name);
return ret;
}
int duet_reset_done(struct duet_uuid uuid)
{
int ret = 0;
struct duet_uuid_arg arg;
arg.size = sizeof(arg);
arg.uuid = uuid;
/* Call syscall x86_64 #331: duet_bmap */
ret = syscall(331, DUET_BMAP_RESET, &arg);
if (ret < 0)
perror("duet_reset_done: syscall failed");
if (!ret)
duet_dbg("Removed (ino%lu, gen%u) to task %d\n",
arg.uuid.ino, arg.uuid.gen, arg.uuid.tid);
return ret;
}
int duet_check_done(struct duet_uuid uuid)
{
int ret = 0;
struct duet_uuid_arg arg;
arg.size = sizeof(arg);
arg.uuid = uuid;
/* Call syscall x86_64 #331: duet_bmap */
ret = syscall(331, DUET_BMAP_CHECK, &arg);
if (ret < 0)
perror("duet_check_done: syscall failed");
if (ret >= 0)
duet_dbg("(ino%lu, gen%u) in task %d is %sset (ret%d)\n",
arg.uuid.ino, arg.uuid.gen, arg.uuid.tid,
(ret == 1) ? "" : "not ", ret);
return ret;
}
/* Caller needs to free returned path */
char *duet_get_path(struct duet_uuid uuid)
{
int ret;
char *path;
struct duet_uuid_arg arg;
path = calloc(PATH_MAX, sizeof(char));
if (!path)
return path;
arg.size = sizeof(arg);
arg.uuid = uuid;
/* Call syscall x86_64 #332: duet_get_path */
ret = syscall(332, &arg, path, PATH_MAX);
if (ret < 0)
perror("duet_get_path: syscall failed");
if (!ret)
duet_dbg("(ino%lu, gen%u) was matched to path %s\n",
uuid.ino, uuid.gen, path);
return path;
}
