4 * This code REQUIRES 2.1.15 or higher/ NET3.038
7 * This module is free software; you can redistribute it and/or
8 * modify it under the terms of the GNU General Public License
9 * as published by the Free Software Foundation; either version
10 * 2 of the License, or (at your option) any later version.
13 * AX.25 036 Jonathan(G4KLX) Split from af_ax25.c.
16 #include <linux/errno.h>
17 #include <linux/types.h>
18 #include <linux/socket.h>
20 #include <linux/kernel.h>
21 #include <linux/sched.h>
22 #include <linux/timer.h>
23 #include <linux/string.h>
24 #include <linux/sockios.h>
25 #include <linux/net.h>
27 #include <linux/inet.h>
28 #include <linux/netdevice.h>
29 #include <linux/if_arp.h>
30 #include <linux/skbuff.h>
32 #include <asm/uaccess.h>
33 #include <asm/system.h>
34 #include <linux/fcntl.h>
36 #include <linux/interrupt.h>
37 #include <linux/notifier.h>
38 #include <linux/proc_fs.h>
39 #include <linux/stat.h>
40 #include <linux/netfilter.h>
41 #include <linux/sysctl.h>
46 * Callsign/UID mapper. This is in kernel space for security on multi-amateur machines.
49 static ax25_uid_assoc *ax25_uid_list;
51 int ax25_uid_policy = 0;
53 ax25_address *ax25_findbyuid(uid_t uid)
55 ax25_uid_assoc *ax25_uid;
57 for (ax25_uid = ax25_uid_list; ax25_uid != NULL; ax25_uid = ax25_uid->next) {
58 if (ax25_uid->uid == uid)
59 return &ax25_uid->call;
65 int ax25_uid_ioctl(int cmd, struct sockaddr_ax25 *sax)
67 ax25_uid_assoc *s, *ax25_uid;
72 for (ax25_uid = ax25_uid_list; ax25_uid != NULL; ax25_uid = ax25_uid->next) {
73 if (ax25cmp(&sax->sax25_call, &ax25_uid->call) == 0)
79 if (!capable(CAP_NET_ADMIN))
81 if (ax25_findbyuid(sax->sax25_uid))
83 if (sax->sax25_uid == 0)
85 if ((ax25_uid = kmalloc(sizeof(*ax25_uid), GFP_KERNEL)) == NULL)
87 ax25_uid->uid = sax->sax25_uid;
88 ax25_uid->call = sax->sax25_call;
89 save_flags(flags); cli();
90 ax25_uid->next = ax25_uid_list;
91 ax25_uid_list = ax25_uid;
96 if (!capable(CAP_NET_ADMIN))
98 for (ax25_uid = ax25_uid_list; ax25_uid != NULL; ax25_uid = ax25_uid->next) {
99 if (ax25cmp(&sax->sax25_call, &ax25_uid->call) == 0)
102 if (ax25_uid == NULL)
104 save_flags(flags); cli();
105 if ((s = ax25_uid_list) == ax25_uid) {
106 ax25_uid_list = s->next;
107 restore_flags(flags);
111 while (s != NULL && s->next != NULL) {
112 if (s->next == ax25_uid) {
113 s->next = ax25_uid->next;
114 restore_flags(flags);
120 restore_flags(flags);
127 return -EINVAL; /*NOTREACHED */
130 int ax25_uid_get_info(char *buffer, char **start, off_t offset, int length)
139 len += sprintf(buffer, "Policy: %d\n", ax25_uid_policy);
141 for (pt = ax25_uid_list; pt != NULL; pt = pt->next) {
142 len += sprintf(buffer + len, "%6d %s\n", pt->uid, ax2asc(&pt->call));
151 if (pos > offset + length)
157 *start = buffer + (offset - begin);
158 len -= offset - begin;
160 if (len > length) len = length;
166 * Free all memory associated with UID/Callsign structures.
168 void __exit ax25_uid_free(void)
170 ax25_uid_assoc *s, *ax25_uid = ax25_uid_list;
172 while (ax25_uid != NULL) {
174 ax25_uid = ax25_uid->next;