~ [ source navigation ] ~ [ diff markup ] ~ [ identifier search ] ~

TOMOYO Linux Cross Reference
Linux/samples/connector/cn_test.c

Version: ~ [ linux-5.2-rc5 ] ~ [ linux-5.1.12 ] ~ [ linux-5.0.21 ] ~ [ linux-4.20.17 ] ~ [ linux-4.19.53 ] ~ [ linux-4.18.20 ] ~ [ linux-4.17.19 ] ~ [ linux-4.16.18 ] ~ [ linux-4.15.18 ] ~ [ linux-4.14.128 ] ~ [ linux-4.13.16 ] ~ [ linux-4.12.14 ] ~ [ linux-4.11.12 ] ~ [ linux-4.10.17 ] ~ [ linux-4.9.182 ] ~ [ linux-4.8.17 ] ~ [ linux-4.7.10 ] ~ [ linux-4.6.7 ] ~ [ linux-4.5.7 ] ~ [ linux-4.4.182 ] ~ [ linux-4.3.6 ] ~ [ linux-4.2.8 ] ~ [ linux-4.1.52 ] ~ [ linux-4.0.9 ] ~ [ linux-3.19.8 ] ~ [ linux-3.18.140 ] ~ [ linux-3.17.8 ] ~ [ linux-3.16.68 ] ~ [ linux-3.15.10 ] ~ [ linux-3.14.79 ] ~ [ linux-3.13.11 ] ~ [ linux-3.12.74 ] ~ [ linux-3.11.10 ] ~ [ linux-3.10.108 ] ~ [ linux-3.9.11 ] ~ [ linux-3.8.13 ] ~ [ linux-3.7.10 ] ~ [ linux-3.6.11 ] ~ [ linux-3.5.7 ] ~ [ linux-3.4.113 ] ~ [ linux-3.3.8 ] ~ [ linux-3.2.102 ] ~ [ linux-3.1.10 ] ~ [ linux-3.0.101 ] ~ [ linux-2.6.39.4 ] ~ [ linux-2.6.38.8 ] ~ [ linux-2.6.37.6 ] ~ [ linux-2.6.36.4 ] ~ [ linux-2.6.35.14 ] ~ [ linux-2.6.34.15 ] ~ [ linux-2.6.33.20 ] ~ [ linux-2.6.32.71 ] ~ [ linux-2.6.0 ] ~ [ linux-2.4.37.11 ] ~ [ unix-v6-master ] ~ [ ccs-tools-1.8.5 ] ~ [ policy-sample ] ~
Architecture: ~ [ i386 ] ~ [ alpha ] ~ [ m68k ] ~ [ mips ] ~ [ ppc ] ~ [ sparc ] ~ [ sparc64 ] ~

  1 /*
  2  *      cn_test.c
  3  * 
  4  * 2004+ Copyright (c) Evgeniy Polyakov <zbr@ioremap.net>
  5  * All rights reserved.
  6  * 
  7  * This program is free software; you can redistribute it and/or modify
  8  * it under the terms of the GNU General Public License as published by
  9  * the Free Software Foundation; either version 2 of the License, or
 10  * (at your option) any later version.
 11  *
 12  * This program is distributed in the hope that it will be useful,
 13  * but WITHOUT ANY WARRANTY; without even the implied warranty of
 14  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 15  * GNU General Public License for more details.
 16  *
 17  * You should have received a copy of the GNU General Public License
 18  * along with this program; if not, write to the Free Software
 19  * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
 20  */
 21 
 22 #define pr_fmt(fmt) "cn_test: " fmt
 23 
 24 #include <linux/kernel.h>
 25 #include <linux/module.h>
 26 #include <linux/moduleparam.h>
 27 #include <linux/skbuff.h>
 28 #include <linux/slab.h>
 29 #include <linux/timer.h>
 30 
 31 #include <linux/connector.h>
 32 
 33 static struct cb_id cn_test_id = { CN_NETLINK_USERS + 3, 0x456 };
 34 static char cn_test_name[] = "cn_test";
 35 static struct sock *nls;
 36 static struct timer_list cn_test_timer;
 37 
 38 static void cn_test_callback(struct cn_msg *msg, struct netlink_skb_parms *nsp)
 39 {
 40         pr_info("%s: %lu: idx=%x, val=%x, seq=%u, ack=%u, len=%d: %s.\n",
 41                 __func__, jiffies, msg->id.idx, msg->id.val,
 42                 msg->seq, msg->ack, msg->len,
 43                 msg->len ? (char *)msg->data : "");
 44 }
 45 
 46 /*
 47  * Do not remove this function even if no one is using it as
 48  * this is an example of how to get notifications about new
 49  * connector user registration
 50  */
 51 #if 0
 52 static int cn_test_want_notify(void)
 53 {
 54         struct cn_ctl_msg *ctl;
 55         struct cn_notify_req *req;
 56         struct cn_msg *msg = NULL;
 57         int size, size0;
 58         struct sk_buff *skb;
 59         struct nlmsghdr *nlh;
 60         u32 group = 1;
 61 
 62         size0 = sizeof(*msg) + sizeof(*ctl) + 3 * sizeof(*req);
 63 
 64         size = NLMSG_SPACE(size0);
 65 
 66         skb = alloc_skb(size, GFP_ATOMIC);
 67         if (!skb) {
 68                 pr_err("failed to allocate new skb with size=%u\n", size);
 69                 return -ENOMEM;
 70         }
 71 
 72         nlh = nlmsg_put(skb, 0, 0x123, NLMSG_DONE, size - sizeof(*nlh), 0);
 73         if (!nlh) {
 74                 kfree_skb(skb);
 75                 return -EMSGSIZE;
 76         }
 77 
 78         msg = nlmsg_data(nlh);
 79 
 80         memset(msg, 0, size0);
 81 
 82         msg->id.idx = -1;
 83         msg->id.val = -1;
 84         msg->seq = 0x123;
 85         msg->ack = 0x345;
 86         msg->len = size0 - sizeof(*msg);
 87 
 88         ctl = (struct cn_ctl_msg *)(msg + 1);
 89 
 90         ctl->idx_notify_num = 1;
 91         ctl->val_notify_num = 2;
 92         ctl->group = group;
 93         ctl->len = msg->len - sizeof(*ctl);
 94 
 95         req = (struct cn_notify_req *)(ctl + 1);
 96 
 97         /*
 98          * Idx.
 99          */
100         req->first = cn_test_id.idx;
101         req->range = 10;
102 
103         /*
104          * Val 0.
105          */
106         req++;
107         req->first = cn_test_id.val;
108         req->range = 10;
109 
110         /*
111          * Val 1.
112          */
113         req++;
114         req->first = cn_test_id.val + 20;
115         req->range = 10;
116 
117         NETLINK_CB(skb).dst_group = ctl->group;
118         //netlink_broadcast(nls, skb, 0, ctl->group, GFP_ATOMIC);
119         netlink_unicast(nls, skb, 0, 0);
120 
121         pr_info("request was sent: group=0x%x\n", ctl->group);
122 
123         return 0;
124 }
125 #endif
126 
127 static u32 cn_test_timer_counter;
128 static void cn_test_timer_func(unsigned long __data)
129 {
130         struct cn_msg *m;
131         char data[32];
132 
133         pr_debug("%s: timer fired with data %lu\n", __func__, __data);
134 
135         m = kzalloc(sizeof(*m) + sizeof(data), GFP_ATOMIC);
136         if (m) {
137 
138                 memcpy(&m->id, &cn_test_id, sizeof(m->id));
139                 m->seq = cn_test_timer_counter;
140                 m->len = sizeof(data);
141 
142                 m->len =
143                     scnprintf(data, sizeof(data), "counter = %u",
144                               cn_test_timer_counter) + 1;
145 
146                 memcpy(m + 1, data, m->len);
147 
148                 cn_netlink_send(m, 0, 0, GFP_ATOMIC);
149                 kfree(m);
150         }
151 
152         cn_test_timer_counter++;
153 
154         mod_timer(&cn_test_timer, jiffies + msecs_to_jiffies(1000));
155 }
156 
157 static int cn_test_init(void)
158 {
159         int err;
160 
161         err = cn_add_callback(&cn_test_id, cn_test_name, cn_test_callback);
162         if (err)
163                 goto err_out;
164         cn_test_id.val++;
165         err = cn_add_callback(&cn_test_id, cn_test_name, cn_test_callback);
166         if (err) {
167                 cn_del_callback(&cn_test_id);
168                 goto err_out;
169         }
170 
171         setup_timer(&cn_test_timer, cn_test_timer_func, 0);
172         mod_timer(&cn_test_timer, jiffies + msecs_to_jiffies(1000));
173 
174         pr_info("initialized with id={%u.%u}\n",
175                 cn_test_id.idx, cn_test_id.val);
176 
177         return 0;
178 
179       err_out:
180         if (nls && nls->sk_socket)
181                 sock_release(nls->sk_socket);
182 
183         return err;
184 }
185 
186 static void cn_test_fini(void)
187 {
188         del_timer_sync(&cn_test_timer);
189         cn_del_callback(&cn_test_id);
190         cn_test_id.val--;
191         cn_del_callback(&cn_test_id);
192         if (nls && nls->sk_socket)
193                 sock_release(nls->sk_socket);
194 }
195 
196 module_init(cn_test_init);
197 module_exit(cn_test_fini);
198 
199 MODULE_LICENSE("GPL");
200 MODULE_AUTHOR("Evgeniy Polyakov <zbr@ioremap.net>");
201 MODULE_DESCRIPTION("Connector's test module");
202 

~ [ source navigation ] ~ [ diff markup ] ~ [ identifier search ] ~

kernel.org | git.kernel.org | LWN.net | Project Home | Wiki (Japanese) | Wiki (English) | SVN repository | Mail admin

Linux® is a registered trademark of Linus Torvalds in the United States and other countries.
TOMOYO® is a registered trademark of NTT DATA CORPORATION.

osdn.jp