AcoSail/kernel_optimize_test
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inotify: do not send a block of zeros when no pathname is available

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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 0db501bd06 where
my system wouldn't finish booting because some process was being confused by
this.

Signed-off-by: Brian Rogers <brian@xyzw.org>
Signed-off-by: Eric Paris <eparis@redhat.com>
This commit is contained in:
Brian Rogers 2009-08-28 10:00:05 -04:00 committed by Eric Paris
parent 326ba5010a
commit b962e7312a
1 changed files with 5 additions and 3 deletions
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8
fs/notify/inotify/inotify_user.c
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@ -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);