Create a container member

[thirdparty/mdadm.git] / sysfs.c

diff --git a/sysfs.c b/sysfs.c
index 0255f8825e9ef12af2f485a1e0ee247066bec388..8b5a6ff507c8b4165107b2ac5520fa7c1c9d1003 100644 (file)
--- a/sysfs.c
+++ b/sysfs.c
@@ -34,7 +34,7 @@ int load_sys(char *path, char *buf)
                return -1;
        n = read(fd, buf, 1024);
        close(fd);
-       if (n <=0 || n >= 1024)
+       if (n <0 || n >= 1024)
                return -1;
        buf[n] = 0;
        if (buf[n-1] == '\n')
@@ -310,3 +310,57 @@ int sysfs_get_ll(struct mdinfo *sra, struct mdinfo *dev,
                return -1;
        return 0;
 }
+
+int sysfs_set_array(struct mdinfo *sra,
+                   struct mdinfo *info)
+{
+       int rv = 0;
+       sra->array = info->array;
+
+       if (info->array.level < 0)
+               return 0; /* FIXME */
+       rv |= sysfs_set_str(sra, NULL, "level",
+                           map_num(pers, info->array.level));
+       rv |= sysfs_set_num(sra, NULL, "raid_disks", info->array.raid_disks);
+       rv |= sysfs_set_num(sra, NULL, "chunk_size", info->array.chunk_size);
+       rv |= sysfs_set_num(sra, NULL, "layout", info->array.layout);
+       rv |= sysfs_set_num(sra, NULL, "component_size", info->component_size);
+       sra->array = info->array;
+       return rv;
+}
+
+int sysfs_add_disk(struct mdinfo *sra, int fd, struct mdinfo *sd)
+{
+       char dv[100];
+       char nm[100];
+       struct mdinfo *sd2;
+       char *dname;
+       int rv;
+
+       sprintf(dv, "%d:%d", sd->disk.major, sd->disk.minor);
+       rv = sysfs_set_str(sra, NULL, "new_dev", dv);
+       if (rv)
+               return rv;
+
+       memset(nm, 0, sizeof(nm));
+       sprintf(dv, "/sys/dev/block/%d:%d", sd->disk.major, sd->disk.minor);
+       if (readlink(dv, nm, sizeof(nm)) < 0)
+               return -1;
+       dname = strrchr(nm, '/');
+       if (dname) dname++;
+       strcpy(sd->sys_name, "dev-");
+       strcpy(sd->sys_name+4, dname);
+
+       rv |= sysfs_set_num(sra, sd, "offset", sd->data_offset);
+       rv |= sysfs_set_num(sra, sd, "size", (sd->component_size+1) / 2);
+       if (sra->array.level != LEVEL_CONTAINER) {
+               rv |= sysfs_set_num(sra, sd, "slot", sd->disk.raid_disk);
+//             rv |= sysfs_set_str(sra, sd, "state", "in_sync");
+       }
+       sd2 = malloc(sizeof(*sd2));
+       *sd2 = *sd;
+       sd2->next = sra->devs;
+       sra->devs = sd2;
+
+       return rv;
+}