2 * This program is free software; you can redistribute it and/or
3 * modify it under the terms of the GNU General Public
4 * License v2 as published by the Free Software Foundation.
6 * This program is distributed in the hope that it will be useful,
7 * but WITHOUT ANY WARRANTY; without even the implied warranty of
8 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
9 * General Public License for more details.
11 * You should have received a copy of the GNU General Public
12 * License along with this program; if not, write to the
13 * Free Software Foundation, Inc., 59 Temple Place - Suite 330,
14 * Boston, MA 021110-1307, USA.
22 #include <sys/ioctl.h>
26 #include "kerncompat.h"
33 /* FIXME - imported cruft, fix sparse errors and warnings */
35 #define BLKGETSIZE64 0
36 #define BTRFS_IOC_SNAP_CREATE_V2 0
37 #define BTRFS_VOL_NAME_MAX 255
38 struct btrfs_ioctl_vol_args { char name[BTRFS_VOL_NAME_MAX]; };
39 static inline int ioctl(int fd, int define, void *arg) { return 0; }
42 static const char * const device_cmd_group_usage[] = {
43 "btrfs device <command> [<args>]",
47 static const char * const cmd_add_dev_usage[] = {
48 "btrfs device add <device> [<device>...] <path>",
49 "Add a device to a filesystem",
53 static int cmd_add_dev(int argc, char **argv)
56 int i, fdmnt, ret=0, e;
58 if (check_argc_min(argc, 3))
59 usage(cmd_add_dev_usage);
61 mntpnt = argv[argc - 1];
63 fdmnt = open_file_or_dir(mntpnt);
65 fprintf(stderr, "ERROR: can't access to '%s'\n", mntpnt);
69 for (i = 1; i < argc - 1; i++ ){
70 struct btrfs_ioctl_vol_args ioctl_args;
72 u64 dev_block_count = 0;
76 res = check_mounted(argv[i]);
78 fprintf(stderr, "error checking %s mount status\n",
84 fprintf(stderr, "%s is mounted\n", argv[i]);
89 devfd = open(argv[i], O_RDWR);
91 fprintf(stderr, "ERROR: Unable to open device '%s'\n", argv[i]);
96 res = fstat(devfd, &st);
98 fprintf(stderr, "ERROR: Unable to stat '%s'\n", argv[i]);
103 if (!S_ISBLK(st.st_mode)) {
104 fprintf(stderr, "ERROR: '%s' is not a block device\n", argv[i]);
110 res = btrfs_prepare_device(devfd, argv[i], 1, &dev_block_count, &mixed);
112 fprintf(stderr, "ERROR: Unable to init '%s'\n", argv[i]);
119 strncpy(ioctl_args.name, argv[i], BTRFS_PATH_NAME_MAX);
120 res = ioctl(fdmnt, BTRFS_IOC_ADD_DEV, &ioctl_args);
123 fprintf(stderr, "ERROR: error adding the device '%s' - %s\n",
124 argv[i], strerror(e));
137 static const char * const cmd_rm_dev_usage[] = {
138 "btrfs device delete <device> [<device>...] <path>",
139 "Remove a device from a filesystem",
143 static int cmd_rm_dev(int argc, char **argv)
146 int i, fdmnt, ret=0, e;
148 if (check_argc_min(argc, 3))
149 usage(cmd_rm_dev_usage);
151 mntpnt = argv[argc - 1];
153 fdmnt = open_file_or_dir(mntpnt);
155 fprintf(stderr, "ERROR: can't access to '%s'\n", mntpnt);
159 for(i=1 ; i < argc - 1; i++ ){
160 struct btrfs_ioctl_vol_args arg;
163 strncpy(arg.name, argv[i], BTRFS_PATH_NAME_MAX);
164 res = ioctl(fdmnt, BTRFS_IOC_RM_DEV, &arg);
167 fprintf(stderr, "ERROR: error removing the device '%s' - %s\n",
168 argv[i], strerror(e));
180 static const char * const cmd_scan_dev_usage[] = {
181 "btrfs device scan [<device>...]",
182 "Scan devices for a btrfs filesystem",
186 static int cmd_scan_dev(int argc, char **argv)
192 if( argc > 1 && !strcmp(argv[1],"--all-devices")){
193 if (check_argc_max(argc, 2))
194 usage(cmd_scan_dev_usage);
204 printf("Scanning for Btrfs filesystems\n");
206 ret = btrfs_scan_block_devices(1);
208 ret = btrfs_scan_one_dir("/dev", 1);
210 fprintf(stderr, "ERROR: error %d while scanning\n", ret);
216 fd = open("/dev/btrfs-control", O_RDWR);
218 perror("failed to open /dev/btrfs-control");
222 for( i = devstart ; i < argc ; i++ ){
223 struct btrfs_ioctl_vol_args args;
226 printf("Scanning for Btrfs filesystems in '%s'\n", argv[i]);
228 strncpy(args.name, argv[i], BTRFS_PATH_NAME_MAX);
230 * FIXME: which are the error code returned by this ioctl ?
231 * it seems that is impossible to understand if there no is
232 * a btrfs filesystem from an I/O error !!!
234 ret = ioctl(fd, BTRFS_IOC_SCAN_DEV, &args);
239 fprintf(stderr, "ERROR: unable to scan the device '%s' - %s\n",
240 argv[i], strerror(e));
249 const struct cmd_group device_cmd_group = {
250 device_cmd_group_usage, NULL, {
251 { "add", cmd_add_dev, cmd_add_dev_usage, NULL, 0 },
252 { "delete", cmd_rm_dev, cmd_rm_dev_usage, NULL, 0 },
253 { "scan", cmd_scan_dev, cmd_scan_dev_usage, NULL, 0 },
258 int cmd_device(int argc, char **argv)
260 return handle_command_group(&device_cmd_group, argc, argv);