int flags = 0;
int cmd = 0;
int err = 0, i;
- u64 lock_length;
+ u64 lock_start, lock_length;
struct ksmbd_lock *smb_lock = NULL, *cmp_lock, *tmp;
int nolock = 0;
LIST_HEAD(lock_list);
cmd = smb2_set_flock_flags(flock, flags);
- flock->fl_start = le64_to_cpu(lock_ele[i].Offset);
- if (flock->fl_start > OFFSET_MAX) {
+ lock_start = le64_to_cpu(lock_ele[i].Offset);
+ lock_length = le64_to_cpu(lock_ele[i].Length);
+ if (lock_start > U64_MAX - lock_length) {
ksmbd_err("Invalid lock range requested\n");
rsp->hdr.Status = STATUS_INVALID_LOCK_RANGE;
goto out;
}
+ if (lock_start > OFFSET_MAX)
+ flock->fl_start = OFFSET_MAX;
+ else
+ flock->fl_start = lock_start;
+
lock_length = le64_to_cpu(lock_ele[i].Length);
- if (lock_length > 0) {
- if (lock_length > OFFSET_MAX - flock->fl_start) {
- ksmbd_debug(SMB,
- "Invalid lock range requested\n");
- lock_length = OFFSET_MAX - flock->fl_start;
- rsp->hdr.Status = STATUS_INVALID_LOCK_RANGE;
- goto out;
- }
- } else {
- lock_length = 0;
- }
+ if (lock_length > OFFSET_MAX - flock->fl_start)
+ lock_length = OFFSET_MAX - flock->fl_start;
flock->fl_end = flock->fl_start + lock_length;