From 565fae37d7345d732b1aa7fa7206122ebe308c32 Mon Sep 17 00:00:00 2001
From: Alexander Aksenov <a.aksenov@samsung.com>
Date: Mon, 24 Feb 2014 15:50:15 +0400
Subject: [PATCH] [IMPROVE] Us_manager: implement 'dumb' filter

All apps passes through this filter. Works like there is no filter

Change-Id: Iacfc58cfa8f8c72c9d74facf05d5ce9b237fd6bf
Signed-off-by: Alexander Aksenov <a.aksenov@samsung.com>
---
 us_manager/pf/pf_group.c     | 19 +++++++++++++++++++
 us_manager/pf/pf_group.h     |  1 +
 us_manager/pf/proc_filters.c | 23 +++++++++++++++++++++++
 us_manager/pf/proc_filters.h |  2 ++
 4 files changed, 45 insertions(+)

diff --git a/us_manager/pf/pf_group.c b/us_manager/pf/pf_group.c
index 4bd2c3e..fafd699 100644
--- a/us_manager/pf/pf_group.c
+++ b/us_manager/pf/pf_group.c
@@ -198,6 +198,25 @@ struct pf_group *get_pf_group_by_tgid(pid_t tgid, void *priv)
 }
 EXPORT_SYMBOL_GPL(get_pf_group_by_tgid);
 
+struct pf_group *get_pf_group_dumb(void *priv)
+{
+	struct pf_group *pfg;
+	struct proc_filter *filter;
+
+	list_for_each_entry(pfg, &pfg_list, list) {
+		if (check_pf_dumb(pfg->filter))
+			return pfg;
+	}
+
+	filter = create_pf_dumb(pfg->filter);
+	pfg = create_pfg(filter);
+
+	add_pfg_by_list(pfg);
+
+	return pfg;
+}
+EXPORT_SYMBOL_GPL(get_pf_group_dumb);
+
 void put_pf_group(struct pf_group *pfg)
 {
 
diff --git a/us_manager/pf/pf_group.h b/us_manager/pf/pf_group.h
index bf6438f..07e448f 100644
--- a/us_manager/pf/pf_group.h
+++ b/us_manager/pf/pf_group.h
@@ -34,6 +34,7 @@ struct sspt_proc;
 
 struct pf_group *get_pf_group_by_dentry(struct dentry *dentry, void *priv);
 struct pf_group *get_pf_group_by_tgid(pid_t tgid, void *priv);
+struct pf_group *get_pf_group_dumb(void *priv);
 void put_pf_group(struct pf_group *pfg);
 
 int pf_register_probe(struct pf_group *pfg, struct dentry *dentry,
diff --git a/us_manager/pf/proc_filters.c b/us_manager/pf/proc_filters.c
index cce88ec..c916625 100644
--- a/us_manager/pf/proc_filters.c
+++ b/us_manager/pf/proc_filters.c
@@ -70,6 +70,13 @@ static struct task_struct *call_by_tgid(struct proc_filter *self,
 	return NULL;
 }
 
+/* Dumb call. Each task is exactly what we are looking for :) */
+static struct task_struct *call_dumb(struct proc_filter *self,
+				     struct task_struct *task)
+{
+	return task;
+}
+
 static struct proc_filter *create_pf(void)
 {
 	struct proc_filter *pf = kmalloc(sizeof(*pf), GFP_KERNEL);
@@ -98,6 +105,17 @@ struct proc_filter *create_pf_by_tgid(pid_t tgid, void *priv)
 	return pf;
 }
 
+struct proc_filter *create_pf_dumb(void *priv)
+{
+	struct proc_filter *pf = create_pf();
+
+	pf->call = &call_dumb;
+	pf->data = NULL;
+	pf->priv = priv;
+
+	return pf;
+}
+
 void free_pf(struct proc_filter *pf)
 {
 	kfree(pf);
@@ -114,6 +132,11 @@ int check_pf_by_tgid(struct proc_filter *filter, pid_t tgid)
 	return filter->data == (void *)tgid && filter->call == &call_by_tgid;
 }
 
+int check_pf_dumb(struct proc_filter *filter)
+{
+	return filter->call == &call_dumb;
+}
+
 struct dentry *get_dentry_by_pf(struct proc_filter *filter)
 {
 	if (filter->call == &call_by_dentry)
diff --git a/us_manager/pf/proc_filters.h b/us_manager/pf/proc_filters.h
index 2857419..2a007d0 100644
--- a/us_manager/pf/proc_filters.h
+++ b/us_manager/pf/proc_filters.h
@@ -42,10 +42,12 @@ struct proc_filter {
 
 struct proc_filter *create_pf_by_dentry(struct dentry *dentry, void *priv);
 struct proc_filter *create_pf_by_tgid(pid_t tgid, void *priv);
+struct proc_filter *create_pf_dumb(void *priv);
 void free_pf(struct proc_filter *pf);
 
 int check_pf_by_dentry(struct proc_filter *filter, struct dentry *dentry);
 int check_pf_by_tgid(struct proc_filter *filter, pid_t tgid);
+int check_pf_dumb(struct proc_filter *filter);
 struct dentry *get_dentry_by_pf(struct proc_filter *filter);
 
 #endif /* _PROC_FILTERS_H */
-- 
2.7.4