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/*
* 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.
*/
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <unistd.h>
#include <fcntl.h>
#include <sys/ioctl.h>
#include <errno.h>
#include <sys/stat.h>
#include "kerncompat.h"
#include "ctree.h"
#include "ioctl.h"
#include "utils.h"
#include "btrfs_cmds.h"
/* FIXME - imported cruft, fix sparse errors and warnings */
#ifdef __CHECKER__
#define BLKGETSIZE64 0
#define BTRFS_IOC_SNAP_CREATE_V2 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
int do_add_volume(int nargs, char **args)
{
char *mntpnt = args[nargs-1];
int i, fdmnt, ret=0, e;
fdmnt = open_file_or_dir(mntpnt);
if (fdmnt < 0) {
fprintf(stderr, "ERROR: can't access to '%s'\n", mntpnt);
return 12;
}
for (i = 1; i < (nargs-1); i++ ){
struct btrfs_ioctl_vol_args ioctl_args;
int devfd, res;
u64 dev_block_count = 0;
struct stat st;
int mixed = 0;
res = check_mounted(args[i]);
if (res < 0) {
fprintf(stderr, "error checking %s mount status\n",
args[i]);
ret++;
continue;
}
if (res == 1) {
fprintf(stderr, "%s is mounted\n", args[i]);
ret++;
continue;
}
devfd = open(args[i], O_RDWR);
if (!devfd) {
fprintf(stderr, "ERROR: Unable to open device '%s'\n", args[i]);
close(devfd);
ret++;
continue;
}
res = fstat(devfd, &st);
if (res) {
fprintf(stderr, "ERROR: Unable to stat '%s'\n", args[i]);
close(devfd);
ret++;
continue;
}
if (!S_ISBLK(st.st_mode)) {
fprintf(stderr, "ERROR: '%s' is not a block device\n", args[i]);
close(devfd);
ret++;
continue;
}
res = btrfs_prepare_device(devfd, args[i], 1, &dev_block_count, &mixed);
if (res) {
fprintf(stderr, "ERROR: Unable to init '%s'\n", args[i]);
close(devfd);
ret++;
continue;
}
close(devfd);
strncpy(ioctl_args.name, args[i], BTRFS_PATH_NAME_MAX);
res = ioctl(fdmnt, BTRFS_IOC_ADD_DEV, &ioctl_args);
e = errno;
if(res<0){
fprintf(stderr, "ERROR: error adding the device '%s' - %s\n",
args[i], strerror(e));
ret++;
}
}
close(fdmnt);
if (ret)
return ret+20;
else
return 0;
}
int do_remove_volume(int nargs, char **args)
{
char *mntpnt = args[nargs-1];
int i, fdmnt, ret=0, e;
fdmnt = open_file_or_dir(mntpnt);
if (fdmnt < 0) {
fprintf(stderr, "ERROR: can't access to '%s'\n", mntpnt);
return 12;
}
for(i=1 ; i < (nargs-1) ; i++ ){
struct btrfs_ioctl_vol_args arg;
int res;
strncpy(arg.name, args[i], BTRFS_PATH_NAME_MAX);
res = ioctl(fdmnt, BTRFS_IOC_RM_DEV, &arg);
e = errno;
if(res<0){
fprintf(stderr, "ERROR: error removing the device '%s' - %s\n",
args[i], strerror(e));
ret++;
}
}
close(fdmnt);
if( ret)
return ret+20;
else
return 0;
}
int do_scan(int argc, char **argv)
{
int i, fd, e;
int checklist = 1;
int devstart = 1;
if( argc >= 2 && !strcmp(argv[1],"--all-devices")){
if( argc >2 ){
fprintf(stderr, "ERROR: too may arguments\n");
return 22;
}
checklist = 0;
devstart += 1;
}
if(argc<=devstart){
int ret;
printf("Scanning for Btrfs filesystems\n");
if(checklist)
ret = btrfs_scan_block_devices(1);
else
ret = btrfs_scan_one_dir("/dev", 1);
if (ret){
fprintf(stderr, "ERROR: error %d while scanning\n", ret);
return 18;
}
return 0;
}
fd = open("/dev/btrfs-control", O_RDWR);
if (fd < 0) {
perror("failed to open /dev/btrfs-control");
return 10;
}
for( i = devstart ; i < argc ; i++ ){
struct btrfs_ioctl_vol_args args;
int ret;
printf("Scanning for Btrfs filesystems in '%s'\n", argv[i]);
strncpy(args.name, argv[i], BTRFS_PATH_NAME_MAX);
/*
* FIXME: which are the error code returned by this ioctl ?
* it seems that is impossible to understand if there no is
* a btrfs filesystem from an I/O error !!!
*/
ret = ioctl(fd, BTRFS_IOC_SCAN_DEV, &args);
e = errno;
if( ret < 0 ){
close(fd);
fprintf(stderr, "ERROR: unable to scan the device '%s' - %s\n",
argv[i], strerror(e));
return 11;
}
}
close(fd);
return 0;
}
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