+/* Return size of device in bytes */
+int get_dev_size(int fd, char *dname, unsigned long long *sizep)
+{
+ unsigned long long ldsize;
+ struct stat st;
+
+ if (fstat(fd, &st) != -1 && S_ISREG(st.st_mode))
+ ldsize = (unsigned long long)st.st_size;
+ else
+#ifdef BLKGETSIZE64
+ if (ioctl(fd, BLKGETSIZE64, &ldsize) != 0)
+#endif
+ {
+ unsigned long dsize;
+ if (ioctl(fd, BLKGETSIZE, &dsize) == 0) {
+ ldsize = dsize;
+ ldsize <<= 9;
+ } else {
+ if (dname)
+ fprintf(stderr, Name ": Cannot get size of %s: %s\b",
+ dname, strerror(errno));
+ return 0;
+ }
+ }
+ *sizep = ldsize;
+ return 1;
+}
+
+void get_one_disk(int mdfd, mdu_array_info_t *ainf, mdu_disk_info_t *disk)
+{
+ int d;
+ ioctl(mdfd, GET_ARRAY_INFO, ainf);
+ for (d = 0 ; d < ainf->raid_disks + ainf->nr_disks ; d++)
+ if (ioctl(mdfd, GET_DISK_INFO, disk) == 0)
+ return;
+}
+
+int open_container(int fd)
+{
+ /* 'fd' is a block device. Find out if it is in use
+ * by a container, and return an open fd on that container.
+ */
+ char path[256];
+ char *e;
+ DIR *dir;
+ struct dirent *de;
+ int dfd, n;
+ char buf[200];
+ int major, minor;
+ struct stat st;
+
+ if (fstat(fd, &st) != 0)
+ return -1;
+ sprintf(path, "/sys/dev/block/%d:%d/holders",
+ (int)major(st.st_rdev), (int)minor(st.st_rdev));
+ e = path + strlen(path);
+
+ dir = opendir(path);
+ if (!dir)
+ return -1;
+ while ((de = readdir(dir))) {
+ if (de->d_ino == 0)
+ continue;
+ if (de->d_name[0] == '.')
+ continue;
+ sprintf(e, "/%s/dev", de->d_name);
+ dfd = open(path, O_RDONLY);
+ if (dfd < 0)
+ continue;
+ n = read(dfd, buf, sizeof(buf));
+ close(dfd);
+ if (n <= 0 || n >= sizeof(buf))
+ continue;
+ buf[n] = 0;
+ if (sscanf(buf, "%d:%d", &major, &minor) != 2)
+ continue;
+ sprintf(buf, "%d:%d", major, minor);
+ dfd = dev_open(buf, O_RDONLY);
+ if (dfd >= 0) {
+ closedir(dir);
+ return dfd;
+ }
+ }
+ closedir(dir);
+ return -1;
+}
+
+int add_disk(int mdfd, struct supertype *st,
+ struct mdinfo *sra, struct mdinfo *info)
+{
+ /* Add a device to an array, in one of 2 ways. */
+ int rv;
+#ifndef MDASSEMBLE
+ if (st->ss->external) {
+ rv = sysfs_add_disk(sra, info);
+ if (! rv) {
+ struct mdinfo *sd2;
+ for (sd2 = sra->devs; sd2; sd2=sd2->next)
+ if (sd2 == info)
+ break;
+ if (sd2 == NULL) {
+ sd2 = malloc(sizeof(*sd2));
+ *sd2 = *info;
+ sd2->next = sra->devs;
+ sra->devs = sd2;
+ }
+ }
+ } else
+#endif
+ rv = ioctl(mdfd, ADD_NEW_DISK, &info->disk);
+ return rv;
+}
+
+int set_array_info(int mdfd, struct supertype *st, struct mdinfo *info)