marko10_000
/
btrfs-progs
forked from Mirrors/btrfs-progs
1
0
Fork 0
Code Issues Pull Requests Releases Wiki Activity

btrfsctl: add snapshot/subvolume destroy ioctl 

resend Aaron Straus's patch

Signed-off-by: Yan Zheng <zheng.yan@oracle.com>
Signed-off-by: Chris Mason <chris.mason@oracle.com>
master
Yan, Zheng 2009-09-21 16:03:57 -04:00 committed by Chris Mason
parent 4f89b6eb07
commit 45195b216d
2 changed files with 17 additions and 1 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

15
btrfsctl.c
View File

@ -46,7 +46,7 @@ static inline int ioctl(int fd, int define, void *arg) { return 0; }
static void print_usage(void)
{
printf("usage: btrfsctl [ -d file|dir] [ -s snap_name subvol|tree ]\n");
printf(" [-r size] [-A device] [-a] [-c]\n");
printf(" [-r size] [-A device] [-a] [-c] [-D dir .]\n");
printf("\t-d filename: defragments one file\n");
printf("\t-d directory: defragments the entire Btree\n");
printf("\t-s snap_name dir: creates a new snapshot of dir\n");
@ -55,6 +55,7 @@ static void print_usage(void)
printf("\t-A device: scans the device file for a Btrfs filesystem\n");
printf("\t-a: scans all devices for Btrfs filesystems\n");
printf("\t-c: forces a single FS sync\n");
printf("\t-D: delete snapshot\n");
printf("%s\n", BTRFS_BUILD_VERSION);
exit(1);
}
@ -158,6 +159,18 @@ int main(int ac, char **av)
print_usage();
}
command = BTRFS_IOC_DEFRAG;
} else if (strcmp(av[i], "-D") == 0) {
if (i >= ac - 1) {
fprintf(stderr, "-D requires an arg\n");
print_usage();
}
command = BTRFS_IOC_SNAP_DESTROY;
name = av[i + 1];
len = strlen(name);
if (len == 0 || len >= BTRFS_VOL_NAME_MAX) {
fprintf(stderr, "-D size too long\n");
exit(1);
}
} else if (strcmp(av[i], "-A") == 0) {
if (i >= ac - 1) {
fprintf(stderr, "-A requires an arg\n");

3
ioctl.h
View File

@ -56,4 +56,7 @@ struct btrfs_ioctl_vol_args {
/* 13 is for CLONE_RANGE */
#define BTRFS_IOC_SUBVOL_CREATE _IOW(BTRFS_IOCTL_MAGIC, 14, \
struct btrfs_ioctl_vol_args)
#define BTRFS_IOC_SNAP_DESTROY _IOW(BTRFS_IOCTL_MAGIC, 15, \
struct btrfs_ioctl_vol_args)
#endif