mirror of
https://github.com/kdave/btrfs-progs
synced 2024-12-27 16:42:17 +00:00
120 lines
2.7 KiB
C
120 lines
2.7 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.
|
|
*/
|
|
|
|
#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 snapshot_name ] dir\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");
|
|
print_usage();
|
|
}
|
|
command = BTRFS_IOC_DEFRAG;
|
|
}
|
|
}
|
|
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;
|
|
}
|
|
|