From b962e7312ae87006aed6f68ceee94bdf8db08338 Mon Sep 17 00:00:00 2001 From: Brian Rogers Date: Fri, 28 Aug 2009 10:00:05 -0400 Subject: [PATCH] inotify: do not send a block of zeros when no pathname is available When an event has no pathname, there's no need to pad it with a null byte and therefore generate an inotify_event sized block of zeros. This fixes a regression introduced by commit 0db501bd0610ee0c0aca84d927f90bcccd09e2bd where my system wouldn't finish booting because some process was being confused by this. Signed-off-by: Brian Rogers Signed-off-by: Eric Paris --- fs/notify/inotify/inotify_user.c | 8 +++++--- 1 file changed, 5 insertions(+), 3 deletions(-) diff --git a/fs/notify/inotify/inotify_user.c b/fs/notify/inotify/inotify_user.c index 0e781bc88d1..b547ae17b46 100644 --- a/fs/notify/inotify/inotify_user.c +++ b/fs/notify/inotify/inotify_user.c @@ -180,7 +180,7 @@ static ssize_t copy_event_to_user(struct fsnotify_group *group, struct fsnotify_event_private_data *fsn_priv; struct inotify_event_private_data *priv; size_t event_size = sizeof(struct inotify_event); - size_t name_len; + size_t name_len = 0; /* we get the inotify watch descriptor from the event private data */ spin_lock(&event->lock); @@ -196,10 +196,12 @@ static ssize_t copy_event_to_user(struct fsnotify_group *group, inotify_free_event_priv(fsn_priv); } - /* round up event->name_len so it is a multiple of event_size + /* + * round up event->name_len so it is a multiple of event_size * plus an extra byte for the terminating '\0'. */ - name_len = roundup(event->name_len + 1, event_size); + if (event->name_len) + name_len = roundup(event->name_len + 1, event_size); inotify_event.len = name_len; inotify_event.mask = inotify_mask_to_arg(event->mask);