diff options
Diffstat (limited to 'btrfs-show.c')
-rw-r--r-- | btrfs-show.c | 148 |
1 files changed, 148 insertions, 0 deletions
diff --git a/btrfs-show.c b/btrfs-show.c new file mode 100644 index 00000000..5c370f1e --- /dev/null +++ b/btrfs-show.c @@ -0,0 +1,148 @@ +/* + * Copyright (C) 2007 Oracle. All rights reserved. + * + * This program is free software; you can redistribute it and/or + * modify it under the terms of the GNU General Public + * License v2 as published by the Free Software Foundation. + * + * This program is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU + * General Public License for more details. + * + * You should have received a copy of the GNU General Public + * License along with this program; if not, write to the + * Free Software Foundation, Inc., 59 Temple Place - Suite 330, + * Boston, MA 021110-1307, USA. + */ + +#define _GNU_SOURCE +#ifndef __CHECKER__ +#include <sys/ioctl.h> +#include <sys/mount.h> +#include "ioctl.h" +#endif +#include <stdio.h> +#include <stdlib.h> +#include <getopt.h> +#include <sys/types.h> +#include <sys/stat.h> +#include <fcntl.h> +#include <unistd.h> +#include <dirent.h> +#include <uuid/uuid.h> +#include "kerncompat.h" +#include "ctree.h" +#include "transaction.h" +#include "utils.h" +#include "volumes.h" + +static int uuid_search(struct btrfs_fs_devices *fs_devices, char *search) +{ + struct list_head *cur; + struct btrfs_device *device; + + list_for_each(cur, &fs_devices->devices) { + device = list_entry(cur, struct btrfs_device, dev_list); + if ((device->label && strcmp(device->label, search) == 0) || + strcmp(device->name, search) == 0) + return 1; + } + return 0; +} + +static void print_one_uuid(struct btrfs_fs_devices *fs_devices) +{ + char uuidbuf[37]; + struct list_head *cur; + struct btrfs_device *device; + char *super_bytes_used; + u64 devs_found = 0; + u64 total; + + uuid_unparse(fs_devices->fsid, uuidbuf); + device = list_entry(fs_devices->devices.next, struct btrfs_device, + dev_list); + if (device->label && device->label[0]) + printf("Label: %s ", device->label); + else + printf("Label: none "); + + super_bytes_used = pretty_sizes(device->super_bytes_used); + + total = device->total_devs; + printf(" uuid: %s\n\tTotal devices %llu FS bytes used %s\n", uuidbuf, + (unsigned long long)total, super_bytes_used); + + free(super_bytes_used); + + list_for_each(cur, &fs_devices->devices) { + char *total_bytes; + char *bytes_used; + device = list_entry(cur, struct btrfs_device, dev_list); + total_bytes = pretty_sizes(device->total_bytes); + bytes_used = pretty_sizes(device->bytes_used); + printf("\tdevid %4llu size %s used %s path %s\n", + (unsigned long long)device->devid, + total_bytes, bytes_used, device->name); + free(total_bytes); + free(bytes_used); + devs_found++; + } + if (devs_found < total) { + printf("\t*** Some devices missing\n"); + } + printf("\n"); +} + +static void print_usage(void) +{ + fprintf(stderr, "usage: btrfs-show [search label or device]\n"); + exit(1); +} + +static struct option long_options[] = { + /* { "byte-count", 1, NULL, 'b' }, */ + { 0, 0, 0, 0} +}; + +int main(int ac, char **av) +{ + struct list_head *all_uuids; + struct btrfs_fs_devices *fs_devices; + struct list_head *cur_uuid; + char *search = NULL; + int ret; + int option_index = 0; + + while(1) { + int c; + c = getopt_long(ac, av, "", long_options, + &option_index); + if (c < 0) + break; + switch(c) { + default: + print_usage(); + } + } + ac = ac - optind; + if (ac != 0) { + search = av[optind]; + } + + ret = btrfs_scan_one_dir("/dev", 0); + if (ret) + fprintf(stderr, "error %d while scanning\n", ret); + + all_uuids = btrfs_scanned_uuids(); + list_for_each(cur_uuid, all_uuids) { + fs_devices = list_entry(cur_uuid, struct btrfs_fs_devices, + list); + if (search && uuid_search(fs_devices, search) == 0) + continue; + print_one_uuid(fs_devices); + } + return 0; +} + |