111 lines
2.5 KiB
C
111 lines
2.5 KiB
C
/*
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* Copyright (C) 2007 Oracle. All rights reserved.
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*
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* This program is free software; you can redistribute it and/or
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* modify it under the terms of the GNU General Public
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* License v2 as published by the Free Software Foundation.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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* General Public License for more details.
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*
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* You should have received a copy of the GNU General Public
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* License along with this program; if not, write to the
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* Free Software Foundation, Inc., 59 Temple Place - Suite 330,
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* Boston, MA 021110-1307, USA.
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*/
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#ifndef __CHECKER__
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#include <sys/ioctl.h>
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#include <sys/mount.h>
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#include "ioctl.h"
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#endif
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#include <stdio.h>
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#include <stdlib.h>
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#include <sys/types.h>
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#include <sys/stat.h>
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#include <fcntl.h>
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#include <unistd.h>
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#include <dirent.h>
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#include "kerncompat.h"
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#ifdef __CHECKER__
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#define BLKGETSIZE64 0
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#define BTRFS_IOC_SNAP_CREATE 0
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#define BTRFS_IOC_ADD_DISK 0
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#define BTRFS_VOL_NAME_MAX 255
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struct btrfs_ioctl_vol_args { char name[BTRFS_VOL_NAME_MAX]; };
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static inline int ioctl(int fd, int define, void *arg) { return 0; }
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#endif
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void print_usage(void)
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{
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printf("usage: btrfsctl [ -s snapshot_name ] dir\n");
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exit(1);
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}
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int main(int ac, char **av)
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{
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char *fname;
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int fd;
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int ret;
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struct btrfs_ioctl_vol_args args;
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char *name = NULL;
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int i;
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struct stat st;
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DIR *dirstream;
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unsigned long command = 0;
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int len;
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for (i = 1; i < ac - 1; i++) {
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if (strcmp(av[i], "-s") == 0) {
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if (i + 1 >= ac - 1) {
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fprintf(stderr, "-s requires an arg");
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print_usage();
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}
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name = av[i + 1];
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len = strlen(name);
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if (len == 0 || len >= BTRFS_VOL_NAME_MAX) {
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fprintf(stderr,
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"snapshot name zero length or too long\n");
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exit(1);
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}
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if (strchr(name, '/')) {
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fprintf(stderr,
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"error: / not allowed in names\n");
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exit(1);
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}
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command = BTRFS_IOC_SNAP_CREATE;
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}
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}
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if (command == 0) {
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fprintf(stderr, "no valid commands given\n");
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exit(1);
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}
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fname = av[ac - 1];
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ret = stat(fname, &st);
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if (ret < 0) {
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perror("stat:");
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exit(1);
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}
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if (S_ISDIR(st.st_mode)) {
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dirstream = opendir(fname);
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if (!dirstream) {
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perror("opendir");
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exit(1);
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}
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fd = dirfd(dirstream);
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} else {
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fd = open(fname, O_RDWR);
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} if (fd < 0) {
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perror("open");
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exit(1);
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}
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strcpy(args.name, name);
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ret = ioctl(fd, command, &args);
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printf("ioctl returns %d\n", ret);
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return 0;
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}
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