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Diffstat (limited to 'fs/notify/inotify/inotify_user.c')
-rw-r--r--fs/notify/inotify/inotify_user.c13
1 files changed, 6 insertions, 7 deletions
diff --git a/fs/notify/inotify/inotify_user.c b/fs/notify/inotify/inotify_user.c
index ce1f5823e2c2..0e781bc88d1e 100644
--- a/fs/notify/inotify/inotify_user.c
+++ b/fs/notify/inotify/inotify_user.c
@@ -47,9 +47,6 @@
47 47
48static struct vfsmount *inotify_mnt __read_mostly; 48static struct vfsmount *inotify_mnt __read_mostly;
49 49
50/* this just sits here and wastes global memory. used to just pad userspace messages with zeros */
51static struct inotify_event nul_inotify_event;
52
53/* these are configurable via /proc/sys/fs/inotify/ */ 50/* these are configurable via /proc/sys/fs/inotify/ */
54static int inotify_max_user_instances __read_mostly; 51static int inotify_max_user_instances __read_mostly;
55static int inotify_max_queued_events __read_mostly; 52static int inotify_max_queued_events __read_mostly;
@@ -199,8 +196,10 @@ static ssize_t copy_event_to_user(struct fsnotify_group *group,
199 inotify_free_event_priv(fsn_priv); 196 inotify_free_event_priv(fsn_priv);
200 } 197 }
201 198
202 /* round up event->name_len so it is a multiple of event_size */ 199 /* round up event->name_len so it is a multiple of event_size
203 name_len = roundup(event->name_len, event_size); 200 * plus an extra byte for the terminating '\0'.
201 */
202 name_len = roundup(event->name_len + 1, event_size);
204 inotify_event.len = name_len; 203 inotify_event.len = name_len;
205 204
206 inotify_event.mask = inotify_mask_to_arg(event->mask); 205 inotify_event.mask = inotify_mask_to_arg(event->mask);
@@ -224,8 +223,8 @@ static ssize_t copy_event_to_user(struct fsnotify_group *group,
224 return -EFAULT; 223 return -EFAULT;
225 buf += event->name_len; 224 buf += event->name_len;
226 225
227 /* fill userspace with 0's from nul_inotify_event */ 226 /* fill userspace with 0's */
228 if (copy_to_user(buf, &nul_inotify_event, len_to_zero)) 227 if (clear_user(buf, len_to_zero))
229 return -EFAULT; 228 return -EFAULT;
230 buf += len_to_zero; 229 buf += len_to_zero;
231 event_size += name_len; 230 event_size += name_len;