| /* |
| * 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. |
| */ |
| |
| #ifndef __CHECKER__ |
| #include <sys/ioctl.h> |
| #include <sys/mount.h> |
| #include "ioctl.h" |
| #endif |
| #include <stdio.h> |
| #include <stdlib.h> |
| #include <sys/types.h> |
| #include <sys/stat.h> |
| #include <fcntl.h> |
| #include <unistd.h> |
| #include <dirent.h> |
| #include "kerncompat.h" |
| |
| #ifdef __CHECKER__ |
| #define BLKGETSIZE64 0 |
| #define BTRFS_IOC_SNAP_CREATE 0 |
| #define BTRFS_IOC_ADD_DISK 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 |
| |
| void print_usage(void) |
| { |
| printf("usage: btrfsctl [ -s name ] [-d] [-r size] file_or_dir\n"); |
| printf("\t-d filename defragments one file\n"); |
| printf("\t-d directory defragments the entire Btree\n"); |
| printf("\t-s snap_name existing_subvol creates a new snapshot\n"); |
| printf("\t-s snap_name tree_root creates a new subvolume\n"); |
| printf("\t-r [+-]size[gkm] resize the FS\n"); |
| exit(1); |
| } |
| |
| int main(int ac, char **av) |
| { |
| char *fname; |
| int fd; |
| int ret; |
| struct btrfs_ioctl_vol_args args; |
| char *name = NULL; |
| int i; |
| struct stat st; |
| DIR *dirstream; |
| unsigned long command = 0; |
| int len; |
| |
| for (i = 1; i < ac - 1; i++) { |
| if (strcmp(av[i], "-s") == 0) { |
| if (i + 1 >= ac - 1) { |
| fprintf(stderr, "-s requires an arg"); |
| print_usage(); |
| } |
| name = av[i + 1]; |
| len = strlen(name); |
| if (len == 0 || len >= BTRFS_VOL_NAME_MAX) { |
| fprintf(stderr, |
| "snapshot name zero length or too long\n"); |
| exit(1); |
| } |
| if (strchr(name, '/')) { |
| fprintf(stderr, |
| "error: / not allowed in names\n"); |
| exit(1); |
| } |
| command = BTRFS_IOC_SNAP_CREATE; |
| } else if (strcmp(av[i], "-d") == 0) { |
| if (i >= ac - 1) { |
| fprintf(stderr, "-d requires an arg\n"); |
| print_usage(); |
| } |
| command = BTRFS_IOC_DEFRAG; |
| } else if (strcmp(av[i], "-r") == 0) { |
| if (i >= ac - 1) { |
| fprintf(stderr, "-r requires an arg\n"); |
| print_usage(); |
| } |
| name = av[i + 1]; |
| len = strlen(name); |
| if (len == 0 || len >= BTRFS_VOL_NAME_MAX) { |
| fprintf(stderr, "-r size too long\n"); |
| exit(1); |
| } |
| command = BTRFS_IOC_RESIZE; |
| } |
| } |
| if (command == 0) { |
| fprintf(stderr, "no valid commands given\n"); |
| exit(1); |
| } |
| fname = av[ac - 1]; |
| ret = stat(fname, &st); |
| if (ret < 0) { |
| perror("stat:"); |
| exit(1); |
| } |
| if (S_ISDIR(st.st_mode)) { |
| dirstream = opendir(fname); |
| if (!dirstream) { |
| perror("opendir"); |
| exit(1); |
| } |
| fd = dirfd(dirstream); |
| } else { |
| fd = open(fname, O_RDWR); |
| } if (fd < 0) { |
| perror("open"); |
| exit(1); |
| } |
| if (name) |
| strcpy(args.name, name); |
| else |
| args.name[0] = '\0'; |
| ret = ioctl(fd, command, &args); |
| printf("ioctl returns %d\n", ret); |
| return 0; |
| } |
| |