+}
+
+int sysfs_attribute_available(struct mdinfo *sra, struct mdinfo *dev, char *name)
+{
+ char fname[MAX_SYSFS_PATH_LEN];
+ struct stat st;
+
+ snprintf(fname, MAX_SYSFS_PATH_LEN, "/sys/block/%s/md/%s/%s",
+ sra->sys_name, dev?dev->sys_name:"", name);
+
+ return stat(fname, &st) == 0;
+}
+
+int sysfs_get_fd(struct mdinfo *sra, struct mdinfo *dev,
+ char *name)
+{
+ char fname[MAX_SYSFS_PATH_LEN];
+ int fd;
+
+ snprintf(fname, MAX_SYSFS_PATH_LEN, "/sys/block/%s/md/%s/%s",
+ sra->sys_name, dev?dev->sys_name:"", name);
+ fd = open(fname, O_RDWR);
+ if (fd < 0)
+ fd = open(fname, O_RDONLY);
+ return fd;
+}
+
+int sysfs_fd_get_ll(int fd, unsigned long long *val)
+{
+ char buf[50];
+ int n;
+ char *ep;
+
+ lseek(fd, 0, 0);
+ n = read(fd, buf, sizeof(buf));
+ if (n <= 0 || n == sizeof(buf))
+ return -2;
+ buf[n] = 0;
+ *val = strtoull(buf, &ep, 0);
+ if (ep == buf || (*ep != 0 && *ep != '\n' && *ep != ' '))
+ return -1;
+ return 0;
+}