170 lines
3.9 KiB
C
170 lines
3.9 KiB
C
/*
|
|
* 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"
|
|
|
|
#ifdef __CHECKER__
|
|
#define BLKGETSIZE64 0
|
|
#define BTRFS_IOC_SNAP_CREATE 0
|
|
#define BTRFS_IOC_ADD_DEV 0
|
|
#define BTRFS_IOC_RM_DEV 0
|
|
#define BTRFS_VOL_NAME_MAX 255
|
|
struct btrfs_ioctl_vol_args { char name[BTRFS_VOL_NAME_MAX]; };
|
|
static inline int ioctl(int fd, int define, void *arg) { return 0; }
|
|
#endif
|
|
|
|
static void print_usage(void)
|
|
{
|
|
fprintf(stderr, "usage: btrfs-vol [options] mount_point\n");
|
|
fprintf(stderr, "\t-a device add one device\n");
|
|
fprintf(stderr, "\t-b balance chunks across all devices\n");
|
|
fprintf(stderr, "\t-r device remove one device\n");
|
|
exit(1);
|
|
}
|
|
|
|
static struct option long_options[] = {
|
|
/* { "byte-count", 1, NULL, 'b' }, */
|
|
{ "add", 1, NULL, 'a' },
|
|
{ "balance", 0, NULL, 'b' },
|
|
{ "remove", 1, NULL, 'r' },
|
|
{ 0, 0, 0, 0}
|
|
};
|
|
|
|
int main(int ac, char **av)
|
|
{
|
|
struct stat st;
|
|
char *device = NULL;
|
|
char *mnt = NULL;
|
|
int ret;
|
|
int option_index = 0;
|
|
int cmd = 0;
|
|
int fd;
|
|
int devfd = 0;
|
|
DIR *dirstream;
|
|
struct btrfs_ioctl_vol_args args;
|
|
u64 dev_block_count = 0;
|
|
|
|
printf( "**\n"
|
|
"** WARNING: this program is considered deprecated\n"
|
|
"** Please consider to switch to the btrfs utility\n"
|
|
"**\n");
|
|
|
|
while(1) {
|
|
int c;
|
|
c = getopt_long(ac, av, "a:br:", long_options,
|
|
&option_index);
|
|
if (c < 0)
|
|
break;
|
|
switch(c) {
|
|
case 'a':
|
|
device = strdup(optarg);
|
|
cmd = BTRFS_IOC_ADD_DEV;
|
|
break;
|
|
case 'b':
|
|
cmd = BTRFS_IOC_BALANCE;
|
|
break;
|
|
case 'r':
|
|
device = strdup(optarg);
|
|
cmd = BTRFS_IOC_RM_DEV;
|
|
break;
|
|
default:
|
|
print_usage();
|
|
}
|
|
}
|
|
ac = ac - optind;
|
|
if (ac == 0)
|
|
print_usage();
|
|
mnt = av[optind];
|
|
|
|
if (device && strcmp(device, "missing") == 0 &&
|
|
cmd == BTRFS_IOC_RM_DEV) {
|
|
fprintf(stderr, "removing missing devices from %s\n", mnt);
|
|
} else if (cmd != BTRFS_IOC_BALANCE) {
|
|
if (cmd == BTRFS_IOC_ADD_DEV) {
|
|
ret = check_mounted(device);
|
|
if (ret < 0) {
|
|
fprintf(stderr,
|
|
"error checking %s mount status\n",
|
|
device);
|
|
exit(1);
|
|
}
|
|
if (ret == 1) {
|
|
fprintf(stderr, "%s is mounted\n", device);
|
|
exit(1);
|
|
}
|
|
}
|
|
devfd = open(device, O_RDWR);
|
|
if (devfd < 0) {
|
|
fprintf(stderr, "Unable to open device %s\n", device);
|
|
exit(1);
|
|
}
|
|
ret = fstat(devfd, &st);
|
|
if (ret) {
|
|
fprintf(stderr, "Unable to stat %s\n", device);
|
|
exit(1);
|
|
}
|
|
if (!S_ISBLK(st.st_mode)) {
|
|
fprintf(stderr, "%s is not a block device\n", device);
|
|
exit(1);
|
|
}
|
|
}
|
|
dirstream = opendir(mnt);
|
|
if (!dirstream) {
|
|
fprintf(stderr, "Unable to open directory %s\n", mnt);
|
|
exit(1);
|
|
}
|
|
if (cmd == BTRFS_IOC_ADD_DEV) {
|
|
int mixed = 0;
|
|
|
|
ret = btrfs_prepare_device(devfd, device, 1, &dev_block_count, &mixed);
|
|
if (ret) {
|
|
fprintf(stderr, "Unable to init %s\n", device);
|
|
exit(1);
|
|
}
|
|
}
|
|
fd = dirfd(dirstream);
|
|
if (device)
|
|
strcpy(args.name, device);
|
|
else
|
|
args.name[0] = '\0';
|
|
|
|
ret = ioctl(fd, cmd, &args);
|
|
printf("ioctl returns %d\n", ret);
|
|
return 0;
|
|
}
|
|
|