79 lines
1.5 KiB
C
79 lines
1.5 KiB
C
#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_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;
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int i;
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struct stat st;
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DIR *dirstream;
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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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if (strlen(name) >= BTRFS_VOL_NAME_MAX) {
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fprintf(stderr, "snapshot name is too long\n");
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exit(1);
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}
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}
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}
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fname = av[ac - 1];
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printf("fname is %s\n", fname);
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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, BTRFS_IOC_SNAP_CREATE, &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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