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authorAndreas Gruenbacher <agruen@suse.de>2009-12-17 21:24:27 -0500
committerEric Paris <eparis@redhat.com>2010-07-28 09:58:56 -0400
commit32c3263221bd63316815286dccacdc7abfd7f3c4 (patch)
tree9dad12d5b966cf42d7506e10fb2e3c8d955415d3 /fs/notify
parent22aa425dec9e47051624714ae283eb2b6a473013 (diff)
downloadlinux-32c3263221bd63316815286dccacdc7abfd7f3c4.tar.bz2
fanotify: Add pids to events
Pass the process identifiers of the triggering processes to fanotify listeners: this information is useful for event filtering and logging. Signed-off-by: Andreas Gruenbacher <agruen@suse.de> Signed-off-by: Eric Paris <eparis@redhat.com>
Diffstat (limited to 'fs/notify')
-rw-r--r--fs/notify/fanotify/fanotify.c5
-rw-r--r--fs/notify/fanotify/fanotify_user.c1
-rw-r--r--fs/notify/notification.c3
3 files changed, 7 insertions, 2 deletions
diff --git a/fs/notify/fanotify/fanotify.c b/fs/notify/fanotify/fanotify.c
index 5b0b6b485a9c..881067dc7923 100644
--- a/fs/notify/fanotify/fanotify.c
+++ b/fs/notify/fanotify/fanotify.c
@@ -10,8 +10,9 @@ static bool should_merge(struct fsnotify_event *old, struct fsnotify_event *new)
{
pr_debug("%s: old=%p new=%p\n", __func__, old, new);
- if ((old->to_tell == new->to_tell) &&
- (old->data_type == new->data_type)) {
+ if (old->to_tell == new->to_tell &&
+ old->data_type == new->data_type &&
+ old->tgid == new->tgid) {
switch (old->data_type) {
case (FSNOTIFY_EVENT_PATH):
if ((old->path.mnt == new->path.mnt) &&
diff --git a/fs/notify/fanotify/fanotify_user.c b/fs/notify/fanotify/fanotify_user.c
index cf9c30009825..66e38fc052b2 100644
--- a/fs/notify/fanotify/fanotify_user.c
+++ b/fs/notify/fanotify/fanotify_user.c
@@ -103,6 +103,7 @@ static ssize_t fill_event_metadata(struct fsnotify_group *group,
metadata->event_len = FAN_EVENT_METADATA_LEN;
metadata->vers = FANOTIFY_METADATA_VERSION;
metadata->mask = fanotify_outgoing_mask(event->mask);
+ metadata->pid = pid_vnr(event->tgid);
metadata->fd = create_fd(group, event);
return metadata->fd;
diff --git a/fs/notify/notification.c b/fs/notify/notification.c
index 066f1f988bac..7fc8d004084c 100644
--- a/fs/notify/notification.c
+++ b/fs/notify/notification.c
@@ -93,6 +93,7 @@ void fsnotify_put_event(struct fsnotify_event *event)
BUG_ON(!list_empty(&event->private_data_list));
kfree(event->file_name);
+ put_pid(event->tgid);
kmem_cache_free(fsnotify_event_cachep, event);
}
}
@@ -346,6 +347,7 @@ struct fsnotify_event *fsnotify_clone_event(struct fsnotify_event *old_event)
return NULL;
}
}
+ event->tgid = get_pid(old_event->tgid);
if (event->data_type == FSNOTIFY_EVENT_PATH)
path_get(&event->path);
@@ -385,6 +387,7 @@ struct fsnotify_event *fsnotify_create_event(struct inode *to_tell, __u32 mask,
event->name_len = strlen(event->file_name);
}
+ event->tgid = get_pid(task_tgid(current));
event->sync_cookie = cookie;
event->to_tell = to_tell;
event->data_type = data_type;