+ if (!fp) {
+ fprintf(stderr, "failed to open /proc/swaps\n");
+ return -1;
+ }
+ while (getline(&lineptr, &s, fp) > 0)
+ printf(lineptr);
+ if (lineptr)
+ free(lineptr);
+ fclose(fp);
+ return 0;
+ case 'a':
+ cache_load(0);
+ list_for_each_entry(pr, &devices, list) {
+ if (strcmp(pr->id->name, "swap"))
+ continue;
+ if (swapon(pr->dev, 0))
+ fprintf(stderr, "failed to swapon %s\n", pr->dev);
+ }
+ return 0;
+ case 'p':
+ pri = atoi(optarg);
+ if (pri >= 0)
+ flags = ((pri << SWAP_FLAG_PRIO_SHIFT) & SWAP_FLAG_PRIO_MASK) | SWAP_FLAG_PREFER;
+ break;
+ default:
+ return swapon_usage();