+
+char *human_size(long long bytes)
+{
+ static char buf[30];
+
+
+ if (bytes < 5000*1024)
+ buf[0]=0;
+ else if (bytes < 2*1024LL*1024LL*1024LL)
+ sprintf(buf, " (%ld.%02ld MiB %ld.%02ld MB)",
+ (long)(bytes>>20),
+ (long)((bytes&0xfffff)+0x100000/200)/(0x100000/100),
+ (long)(bytes/1000/1000),
+ (long)(((bytes%1000000)+5000)/10000)
+ );
+ else
+ sprintf(buf, " (%ld.%02ld GiB %ld.%02ld GB)",
+ (long)(bytes>>30),
+ (long)(((bytes>>10)&0xfffff)+0x100000/200)/(0x100000/100),
+ (long)(bytes/1000LL/1000LL/1000LL),
+ (long)((((bytes/1000)%1000000)+5000)/10000)
+ );
+ return buf;
+}
+
+char *human_size_brief(long long bytes)
+{
+ static char buf[30];
+
+
+ if (bytes < 5000*1024)
+ sprintf(buf, "%ld.%02ldKiB",
+ (long)(bytes>>10), (long)(((bytes&1023)*100+512)/1024)
+ );
+ else if (bytes < 2*1024LL*1024LL*1024LL)
+ sprintf(buf, "%ld.%02ldMiB",
+ (long)(bytes>>20),
+ (long)((bytes&0xfffff)+0x100000/200)/(0x100000/100)
+ );
+ else
+ sprintf(buf, "%ld.%02ldGiB",
+ (long)(bytes>>30),
+ (long)(((bytes>>10)&0xfffff)+0x100000/200)/(0x100000/100)
+ );
+ return buf;
+}
+
+int get_mdp_major(void)
+{
+static int mdp_major = -1;
+ FILE *fl;
+ char *w;
+ int have_block = 0;
+ int have_devices = 0;
+ int last_num = -1;
+
+ if (mdp_major != -1)
+ return mdp_major;
+ fl = fopen("/proc/devices", "r");
+ if (!fl)
+ return -1;
+ while ((w = conf_word(fl, 1))) {
+ if (have_block && strcmp(w, "devices:")==0)
+ have_devices = 1;
+ have_block = (strcmp(w, "Block")==0);
+ if (isdigit(w[0]))
+ last_num = atoi(w);
+ if (have_devices && strcmp(w, "mdp")==0)
+ mdp_major = last_num;
+ free(w);
+ }
+ fclose(fl);
+ return mdp_major;
+}
+
+
+
+char *get_md_name(int dev)
+{
+ /* find /dev/md%d or /dev/md/%d or make a device /dev/.tmp.md%d */
+ /* if dev < 0, want /dev/md/d%d or find mdp in /proc/devices ... */
+ static char devname[50];
+ struct stat stb;
+ dev_t rdev;
+ char *dn;
+
+ if (dev < 0) {
+ int mdp = get_mdp_major();
+ if (mdp < 0) return NULL;
+ rdev = MKDEV(mdp, (-1-dev)<<6);
+ sprintf(devname, "/dev/md/d%d", -1-dev);
+ if (stat(devname, &stb) == 0
+ && (S_IFMT&stb.st_mode) == S_IFBLK
+ && (stb.st_rdev == rdev))
+ return devname;
+ } else {
+ rdev = MKDEV(MD_MAJOR, dev);
+ sprintf(devname, "/dev/md%d", dev);
+ if (stat(devname, &stb) == 0
+ && (S_IFMT&stb.st_mode) == S_IFBLK
+ && (stb.st_rdev == rdev))
+ return devname;
+
+ sprintf(devname, "/dev/md/%d", dev);
+ if (stat(devname, &stb) == 0
+ && (S_IFMT&stb.st_mode) == S_IFBLK
+ && (stb.st_rdev == rdev))
+ return devname;
+ }
+ dn = map_dev(MAJOR(rdev), MINOR(rdev));
+ if (dn)
+ return dn;
+ sprintf(devname, "/dev/.tmp.md%d", dev);
+ if (mknod(devname, S_IFBLK | 0600, rdev) == -1)
+ if (errno != EEXIST)
+ return NULL;
+
+ if (stat(devname, &stb) == 0
+ && (S_IFMT&stb.st_mode) == S_IFBLK
+ && (stb.st_rdev == rdev))
+ return devname;
+ unlink(devname);
+ return NULL;
+}
+
+void put_md_name(char *name)
+{
+ if (strncmp(name, "/dev/.tmp.md", 12)==0)
+ unlink(name);
+}