+static long btrfs_ioctl_set_received_subvol(struct file *file,
+ void __user *arg)
+{
+ struct btrfs_ioctl_received_subvol_args *sa = NULL;
+ ret = copy_to_user(arg, sa, sizeof(*sa));
+struct btrfs_ioctl_received_subvol_args {
+ char uuid[BTRFS_UUID_SIZE]; /* in */
+ __u64 stransid; /* in */
+ __u64 rtransid; /* out */
+ struct timespec stime; /* in */
+ struct timespec rtime; /* out */
+ __u64 reserved[16];
+};
Careful, timespec will be different sizes in 32bit userspace and a 64bit
kernel. I'd use btrfs_timespec to get a fixed size timespec and avoid
all the compat_timespec noise. (I'd then also worry about padding and
might pack the struct.. I always lose track of the best practice across
all archs.)
- z
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