1 // SPDX-License-Identifier: GPL-2.0-only <<
2 /* 1 /*
3 * common LSM auditing functions 2 * common LSM auditing functions
4 * 3 *
5 * Based on code written for SELinux by : 4 * Based on code written for SELinux by :
6 * Stephen Smalley, <sds@ 5 * Stephen Smalley, <sds@tycho.nsa.gov>
7 * James Morris <jmorris@ 6 * James Morris <jmorris@redhat.com>
8 * Author : Etienne Basset, <etienne.basset@en 7 * Author : Etienne Basset, <etienne.basset@ensta.org>
>> 8 *
>> 9 * This program is free software; you can redistribute it and/or modify
>> 10 * it under the terms of the GNU General Public License version 2,
>> 11 * as published by the Free Software Foundation.
9 */ 12 */
10 13
11 #include <linux/types.h> 14 #include <linux/types.h>
12 #include <linux/stddef.h> 15 #include <linux/stddef.h>
13 #include <linux/kernel.h> 16 #include <linux/kernel.h>
14 #include <linux/gfp.h> 17 #include <linux/gfp.h>
15 #include <linux/fs.h> 18 #include <linux/fs.h>
16 #include <linux/init.h> 19 #include <linux/init.h>
17 #include <net/sock.h> 20 #include <net/sock.h>
18 #include <linux/un.h> 21 #include <linux/un.h>
19 #include <net/af_unix.h> 22 #include <net/af_unix.h>
20 #include <linux/audit.h> 23 #include <linux/audit.h>
21 #include <linux/ipv6.h> 24 #include <linux/ipv6.h>
22 #include <linux/ip.h> 25 #include <linux/ip.h>
23 #include <net/ip.h> 26 #include <net/ip.h>
24 #include <net/ipv6.h> 27 #include <net/ipv6.h>
25 #include <linux/tcp.h> 28 #include <linux/tcp.h>
26 #include <linux/udp.h> 29 #include <linux/udp.h>
27 #include <linux/dccp.h> 30 #include <linux/dccp.h>
28 #include <linux/sctp.h> 31 #include <linux/sctp.h>
29 #include <linux/lsm_audit.h> 32 #include <linux/lsm_audit.h>
30 #include <linux/security.h> <<
31 33
32 /** 34 /**
33 * ipv4_skb_to_auditdata : fill auditdata from 35 * ipv4_skb_to_auditdata : fill auditdata from skb
34 * @skb : the skb 36 * @skb : the skb
35 * @ad : the audit data to fill 37 * @ad : the audit data to fill
36 * @proto : the layer 4 protocol 38 * @proto : the layer 4 protocol
37 * 39 *
38 * return 0 on success 40 * return 0 on success
39 */ 41 */
40 int ipv4_skb_to_auditdata(struct sk_buff *skb, 42 int ipv4_skb_to_auditdata(struct sk_buff *skb,
41 struct common_audit_data *ad, 43 struct common_audit_data *ad, u8 *proto)
42 { 44 {
43 int ret = 0; 45 int ret = 0;
44 struct iphdr *ih; 46 struct iphdr *ih;
45 47
46 ih = ip_hdr(skb); 48 ih = ip_hdr(skb);
>> 49 if (ih == NULL)
>> 50 return -EINVAL;
>> 51
47 ad->u.net->v4info.saddr = ih->saddr; 52 ad->u.net->v4info.saddr = ih->saddr;
48 ad->u.net->v4info.daddr = ih->daddr; 53 ad->u.net->v4info.daddr = ih->daddr;
49 54
50 if (proto) 55 if (proto)
51 *proto = ih->protocol; 56 *proto = ih->protocol;
52 /* non initial fragment */ 57 /* non initial fragment */
53 if (ntohs(ih->frag_off) & IP_OFFSET) 58 if (ntohs(ih->frag_off) & IP_OFFSET)
54 return 0; 59 return 0;
55 60
56 switch (ih->protocol) { 61 switch (ih->protocol) {
57 case IPPROTO_TCP: { 62 case IPPROTO_TCP: {
58 struct tcphdr *th = tcp_hdr(sk 63 struct tcphdr *th = tcp_hdr(skb);
>> 64 if (th == NULL)
>> 65 break;
59 66
60 ad->u.net->sport = th->source; 67 ad->u.net->sport = th->source;
61 ad->u.net->dport = th->dest; 68 ad->u.net->dport = th->dest;
62 break; 69 break;
63 } 70 }
64 case IPPROTO_UDP: { 71 case IPPROTO_UDP: {
65 struct udphdr *uh = udp_hdr(sk 72 struct udphdr *uh = udp_hdr(skb);
>> 73 if (uh == NULL)
>> 74 break;
66 75
67 ad->u.net->sport = uh->source; 76 ad->u.net->sport = uh->source;
68 ad->u.net->dport = uh->dest; 77 ad->u.net->dport = uh->dest;
69 break; 78 break;
70 } 79 }
71 case IPPROTO_DCCP: { 80 case IPPROTO_DCCP: {
72 struct dccp_hdr *dh = dccp_hdr 81 struct dccp_hdr *dh = dccp_hdr(skb);
>> 82 if (dh == NULL)
>> 83 break;
73 84
74 ad->u.net->sport = dh->dccph_s 85 ad->u.net->sport = dh->dccph_sport;
75 ad->u.net->dport = dh->dccph_d 86 ad->u.net->dport = dh->dccph_dport;
76 break; 87 break;
77 } 88 }
78 case IPPROTO_SCTP: { 89 case IPPROTO_SCTP: {
79 struct sctphdr *sh = sctp_hdr( 90 struct sctphdr *sh = sctp_hdr(skb);
80 !! 91 if (sh == NULL)
>> 92 break;
81 ad->u.net->sport = sh->source; 93 ad->u.net->sport = sh->source;
82 ad->u.net->dport = sh->dest; 94 ad->u.net->dport = sh->dest;
83 break; 95 break;
84 } 96 }
85 default: 97 default:
86 ret = -EINVAL; 98 ret = -EINVAL;
87 } 99 }
88 return ret; 100 return ret;
89 } 101 }
90 #if IS_ENABLED(CONFIG_IPV6) 102 #if IS_ENABLED(CONFIG_IPV6)
91 /** 103 /**
92 * ipv6_skb_to_auditdata : fill auditdata from 104 * ipv6_skb_to_auditdata : fill auditdata from skb
93 * @skb : the skb 105 * @skb : the skb
94 * @ad : the audit data to fill 106 * @ad : the audit data to fill
95 * @proto : the layer 4 protocol 107 * @proto : the layer 4 protocol
96 * 108 *
97 * return 0 on success 109 * return 0 on success
98 */ 110 */
99 int ipv6_skb_to_auditdata(struct sk_buff *skb, 111 int ipv6_skb_to_auditdata(struct sk_buff *skb,
100 struct common_audit_data *ad, 112 struct common_audit_data *ad, u8 *proto)
101 { 113 {
102 int offset, ret = 0; 114 int offset, ret = 0;
103 struct ipv6hdr *ip6; 115 struct ipv6hdr *ip6;
104 u8 nexthdr; 116 u8 nexthdr;
105 __be16 frag_off; 117 __be16 frag_off;
106 118
107 ip6 = ipv6_hdr(skb); 119 ip6 = ipv6_hdr(skb);
>> 120 if (ip6 == NULL)
>> 121 return -EINVAL;
108 ad->u.net->v6info.saddr = ip6->saddr; 122 ad->u.net->v6info.saddr = ip6->saddr;
109 ad->u.net->v6info.daddr = ip6->daddr; 123 ad->u.net->v6info.daddr = ip6->daddr;
>> 124 ret = 0;
110 /* IPv6 can have several extension hea 125 /* IPv6 can have several extension header before the Transport header
111 * skip them */ 126 * skip them */
112 offset = skb_network_offset(skb); 127 offset = skb_network_offset(skb);
113 offset += sizeof(*ip6); 128 offset += sizeof(*ip6);
114 nexthdr = ip6->nexthdr; 129 nexthdr = ip6->nexthdr;
115 offset = ipv6_skip_exthdr(skb, offset, 130 offset = ipv6_skip_exthdr(skb, offset, &nexthdr, &frag_off);
116 if (offset < 0) 131 if (offset < 0)
117 return 0; 132 return 0;
118 if (proto) 133 if (proto)
119 *proto = nexthdr; 134 *proto = nexthdr;
120 switch (nexthdr) { 135 switch (nexthdr) {
121 case IPPROTO_TCP: { 136 case IPPROTO_TCP: {
122 struct tcphdr _tcph, *th; 137 struct tcphdr _tcph, *th;
123 138
124 th = skb_header_pointer(skb, o 139 th = skb_header_pointer(skb, offset, sizeof(_tcph), &_tcph);
125 if (th == NULL) 140 if (th == NULL)
126 break; 141 break;
127 142
128 ad->u.net->sport = th->source; 143 ad->u.net->sport = th->source;
129 ad->u.net->dport = th->dest; 144 ad->u.net->dport = th->dest;
130 break; 145 break;
131 } 146 }
132 case IPPROTO_UDP: { 147 case IPPROTO_UDP: {
133 struct udphdr _udph, *uh; 148 struct udphdr _udph, *uh;
134 149
135 uh = skb_header_pointer(skb, o 150 uh = skb_header_pointer(skb, offset, sizeof(_udph), &_udph);
136 if (uh == NULL) 151 if (uh == NULL)
137 break; 152 break;
138 153
139 ad->u.net->sport = uh->source; 154 ad->u.net->sport = uh->source;
140 ad->u.net->dport = uh->dest; 155 ad->u.net->dport = uh->dest;
141 break; 156 break;
142 } 157 }
143 case IPPROTO_DCCP: { 158 case IPPROTO_DCCP: {
144 struct dccp_hdr _dccph, *dh; 159 struct dccp_hdr _dccph, *dh;
145 160
146 dh = skb_header_pointer(skb, o 161 dh = skb_header_pointer(skb, offset, sizeof(_dccph), &_dccph);
147 if (dh == NULL) 162 if (dh == NULL)
148 break; 163 break;
149 164
150 ad->u.net->sport = dh->dccph_s 165 ad->u.net->sport = dh->dccph_sport;
151 ad->u.net->dport = dh->dccph_d 166 ad->u.net->dport = dh->dccph_dport;
152 break; 167 break;
153 } 168 }
154 case IPPROTO_SCTP: { 169 case IPPROTO_SCTP: {
155 struct sctphdr _sctph, *sh; 170 struct sctphdr _sctph, *sh;
156 171
157 sh = skb_header_pointer(skb, o 172 sh = skb_header_pointer(skb, offset, sizeof(_sctph), &_sctph);
158 if (sh == NULL) 173 if (sh == NULL)
159 break; 174 break;
160 ad->u.net->sport = sh->source; 175 ad->u.net->sport = sh->source;
161 ad->u.net->dport = sh->dest; 176 ad->u.net->dport = sh->dest;
162 break; 177 break;
163 } 178 }
164 default: 179 default:
165 ret = -EINVAL; 180 ret = -EINVAL;
166 } 181 }
167 return ret; 182 return ret;
168 } 183 }
169 #endif 184 #endif
170 185
171 186
172 static inline void print_ipv6_addr(struct audi 187 static inline void print_ipv6_addr(struct audit_buffer *ab,
173 const struc !! 188 struct in6_addr *addr, __be16 port,
174 char *name1 189 char *name1, char *name2)
175 { 190 {
176 if (!ipv6_addr_any(addr)) 191 if (!ipv6_addr_any(addr))
177 audit_log_format(ab, " %s=%pI6 192 audit_log_format(ab, " %s=%pI6c", name1, addr);
178 if (port) 193 if (port)
179 audit_log_format(ab, " %s=%d", 194 audit_log_format(ab, " %s=%d", name2, ntohs(port));
180 } 195 }
181 196
182 static inline void print_ipv4_addr(struct audi 197 static inline void print_ipv4_addr(struct audit_buffer *ab, __be32 addr,
183 __be16 port 198 __be16 port, char *name1, char *name2)
184 { 199 {
185 if (addr) 200 if (addr)
186 audit_log_format(ab, " %s=%pI4 201 audit_log_format(ab, " %s=%pI4", name1, &addr);
187 if (port) 202 if (port)
188 audit_log_format(ab, " %s=%d", 203 audit_log_format(ab, " %s=%d", name2, ntohs(port));
189 } 204 }
190 205
191 /** 206 /**
192 * dump_common_audit_data - helper to dump com 207 * dump_common_audit_data - helper to dump common audit data
193 * @ab : the audit buffer <<
194 * @a : common audit data 208 * @a : common audit data
195 * 209 *
196 */ 210 */
197 static void dump_common_audit_data(struct audi 211 static void dump_common_audit_data(struct audit_buffer *ab,
198 struct comm 212 struct common_audit_data *a)
199 { 213 {
200 char comm[sizeof(current->comm)]; 214 char comm[sizeof(current->comm)];
201 215
202 /* 216 /*
203 * To keep stack sizes in check force !! 217 * To keep stack sizes in check force programers to notice if they
204 * start making this union too large! 218 * start making this union too large! See struct lsm_network_audit
205 * as an example of how to deal with l 219 * as an example of how to deal with large data.
206 */ 220 */
207 BUILD_BUG_ON(sizeof(a->u) > sizeof(voi 221 BUILD_BUG_ON(sizeof(a->u) > sizeof(void *)*2);
208 222
209 audit_log_format(ab, " pid=%d comm=", 223 audit_log_format(ab, " pid=%d comm=", task_tgid_nr(current));
210 audit_log_untrustedstring(ab, memcpy(c 224 audit_log_untrustedstring(ab, memcpy(comm, current->comm, sizeof(comm)));
211 225
212 switch (a->type) { 226 switch (a->type) {
213 case LSM_AUDIT_DATA_NONE: 227 case LSM_AUDIT_DATA_NONE:
214 return; 228 return;
215 case LSM_AUDIT_DATA_IPC: 229 case LSM_AUDIT_DATA_IPC:
216 audit_log_format(ab, " ipc_key !! 230 audit_log_format(ab, " key=%d ", a->u.ipc_id);
217 break; 231 break;
218 case LSM_AUDIT_DATA_CAP: 232 case LSM_AUDIT_DATA_CAP:
219 audit_log_format(ab, " capabil 233 audit_log_format(ab, " capability=%d ", a->u.cap);
220 break; 234 break;
221 case LSM_AUDIT_DATA_PATH: { 235 case LSM_AUDIT_DATA_PATH: {
222 struct inode *inode; 236 struct inode *inode;
223 237
224 audit_log_d_path(ab, " path=", 238 audit_log_d_path(ab, " path=", &a->u.path);
225 239
226 inode = d_backing_inode(a->u.p 240 inode = d_backing_inode(a->u.path.dentry);
227 if (inode) { 241 if (inode) {
228 audit_log_format(ab, " 242 audit_log_format(ab, " dev=");
229 audit_log_untrustedstr 243 audit_log_untrustedstring(ab, inode->i_sb->s_id);
230 audit_log_format(ab, " 244 audit_log_format(ab, " ino=%lu", inode->i_ino);
231 } 245 }
232 break; 246 break;
233 } 247 }
234 case LSM_AUDIT_DATA_FILE: { 248 case LSM_AUDIT_DATA_FILE: {
235 struct inode *inode; 249 struct inode *inode;
236 250
237 audit_log_d_path(ab, " path=", 251 audit_log_d_path(ab, " path=", &a->u.file->f_path);
238 252
239 inode = file_inode(a->u.file); 253 inode = file_inode(a->u.file);
240 if (inode) { 254 if (inode) {
241 audit_log_format(ab, " 255 audit_log_format(ab, " dev=");
242 audit_log_untrustedstr 256 audit_log_untrustedstring(ab, inode->i_sb->s_id);
243 audit_log_format(ab, " 257 audit_log_format(ab, " ino=%lu", inode->i_ino);
244 } 258 }
245 break; 259 break;
246 } 260 }
247 case LSM_AUDIT_DATA_IOCTL_OP: { 261 case LSM_AUDIT_DATA_IOCTL_OP: {
248 struct inode *inode; 262 struct inode *inode;
249 263
250 audit_log_d_path(ab, " path=", 264 audit_log_d_path(ab, " path=", &a->u.op->path);
251 265
252 inode = a->u.op->path.dentry-> 266 inode = a->u.op->path.dentry->d_inode;
253 if (inode) { 267 if (inode) {
254 audit_log_format(ab, " 268 audit_log_format(ab, " dev=");
255 audit_log_untrustedstr 269 audit_log_untrustedstring(ab, inode->i_sb->s_id);
256 audit_log_format(ab, " 270 audit_log_format(ab, " ino=%lu", inode->i_ino);
257 } 271 }
258 272
259 audit_log_format(ab, " ioctlcm 273 audit_log_format(ab, " ioctlcmd=0x%hx", a->u.op->cmd);
260 break; 274 break;
261 } 275 }
262 case LSM_AUDIT_DATA_DENTRY: { 276 case LSM_AUDIT_DATA_DENTRY: {
263 struct inode *inode; 277 struct inode *inode;
264 278
265 audit_log_format(ab, " name=") 279 audit_log_format(ab, " name=");
266 spin_lock(&a->u.dentry->d_lock <<
267 audit_log_untrustedstring(ab, 280 audit_log_untrustedstring(ab, a->u.dentry->d_name.name);
268 spin_unlock(&a->u.dentry->d_lo <<
269 281
270 inode = d_backing_inode(a->u.d 282 inode = d_backing_inode(a->u.dentry);
271 if (inode) { 283 if (inode) {
272 audit_log_format(ab, " 284 audit_log_format(ab, " dev=");
273 audit_log_untrustedstr 285 audit_log_untrustedstring(ab, inode->i_sb->s_id);
274 audit_log_format(ab, " 286 audit_log_format(ab, " ino=%lu", inode->i_ino);
275 } 287 }
276 break; 288 break;
277 } 289 }
278 case LSM_AUDIT_DATA_INODE: { 290 case LSM_AUDIT_DATA_INODE: {
279 struct dentry *dentry; 291 struct dentry *dentry;
280 struct inode *inode; 292 struct inode *inode;
281 293
282 rcu_read_lock(); <<
283 inode = a->u.inode; 294 inode = a->u.inode;
284 dentry = d_find_alias_rcu(inod !! 295 dentry = d_find_alias(inode);
285 if (dentry) { 296 if (dentry) {
286 audit_log_format(ab, " 297 audit_log_format(ab, " name=");
287 spin_lock(&dentry->d_l !! 298 audit_log_untrustedstring(ab,
288 audit_log_untrustedstr !! 299 dentry->d_name.name);
289 spin_unlock(&dentry->d !! 300 dput(dentry);
290 } 301 }
291 audit_log_format(ab, " dev="); 302 audit_log_format(ab, " dev=");
292 audit_log_untrustedstring(ab, 303 audit_log_untrustedstring(ab, inode->i_sb->s_id);
293 audit_log_format(ab, " ino=%lu 304 audit_log_format(ab, " ino=%lu", inode->i_ino);
294 rcu_read_unlock(); <<
295 break; 305 break;
296 } 306 }
297 case LSM_AUDIT_DATA_TASK: { 307 case LSM_AUDIT_DATA_TASK: {
298 struct task_struct *tsk = a->u 308 struct task_struct *tsk = a->u.tsk;
299 if (tsk) { 309 if (tsk) {
300 pid_t pid = task_tgid_ 310 pid_t pid = task_tgid_nr(tsk);
301 if (pid) { 311 if (pid) {
302 char comm[size 312 char comm[sizeof(tsk->comm)];
303 audit_log_form 313 audit_log_format(ab, " opid=%d ocomm=", pid);
304 audit_log_untr 314 audit_log_untrustedstring(ab,
305 memcpy(com 315 memcpy(comm, tsk->comm, sizeof(comm)));
306 } 316 }
307 } 317 }
308 break; 318 break;
309 } 319 }
310 case LSM_AUDIT_DATA_NET: 320 case LSM_AUDIT_DATA_NET:
311 if (a->u.net->sk) { 321 if (a->u.net->sk) {
312 const struct sock *sk !! 322 struct sock *sk = a->u.net->sk;
313 const struct unix_sock !! 323 struct unix_sock *u;
314 struct unix_address *a <<
315 int len = 0; 324 int len = 0;
316 char *p = NULL; 325 char *p = NULL;
317 326
318 switch (sk->sk_family) 327 switch (sk->sk_family) {
319 case AF_INET: { 328 case AF_INET: {
320 const struct i !! 329 struct inet_sock *inet = inet_sk(sk);
321 330
322 print_ipv4_add 331 print_ipv4_addr(ab, inet->inet_rcv_saddr,
323 332 inet->inet_sport,
324 333 "laddr", "lport");
325 print_ipv4_add 334 print_ipv4_addr(ab, inet->inet_daddr,
326 335 inet->inet_dport,
327 336 "faddr", "fport");
328 break; 337 break;
329 } 338 }
330 #if IS_ENABLED(CONFIG_IPV6) 339 #if IS_ENABLED(CONFIG_IPV6)
331 case AF_INET6: { 340 case AF_INET6: {
332 const struct i !! 341 struct inet_sock *inet = inet_sk(sk);
333 342
334 print_ipv6_add 343 print_ipv6_addr(ab, &sk->sk_v6_rcv_saddr,
335 344 inet->inet_sport,
336 345 "laddr", "lport");
337 print_ipv6_add 346 print_ipv6_addr(ab, &sk->sk_v6_daddr,
338 347 inet->inet_dport,
339 348 "faddr", "fport");
340 break; 349 break;
341 } 350 }
342 #endif 351 #endif
343 case AF_UNIX: 352 case AF_UNIX:
344 u = unix_sk(sk 353 u = unix_sk(sk);
345 addr = smp_loa <<
346 if (!addr) <<
347 break; <<
348 if (u->path.de 354 if (u->path.dentry) {
349 audit_ 355 audit_log_d_path(ab, " path=", &u->path);
350 break; 356 break;
351 } 357 }
352 len = addr->le !! 358 if (!u->addr)
353 p = &addr->nam !! 359 break;
>> 360 len = u->addr->len-sizeof(short);
>> 361 p = &u->addr->name->sun_path[0];
354 audit_log_form 362 audit_log_format(ab, " path=");
355 if (*p) 363 if (*p)
356 audit_ 364 audit_log_untrustedstring(ab, p);
357 else 365 else
358 audit_ 366 audit_log_n_hex(ab, p, len);
359 break; 367 break;
360 } 368 }
361 } 369 }
362 370
363 switch (a->u.net->family) { 371 switch (a->u.net->family) {
364 case AF_INET: 372 case AF_INET:
365 print_ipv4_addr(ab, a- 373 print_ipv4_addr(ab, a->u.net->v4info.saddr,
366 a->u.n 374 a->u.net->sport,
367 "saddr 375 "saddr", "src");
368 print_ipv4_addr(ab, a- 376 print_ipv4_addr(ab, a->u.net->v4info.daddr,
369 a->u.n 377 a->u.net->dport,
370 "daddr 378 "daddr", "dest");
371 break; 379 break;
372 case AF_INET6: 380 case AF_INET6:
373 print_ipv6_addr(ab, &a 381 print_ipv6_addr(ab, &a->u.net->v6info.saddr,
374 a->u.n 382 a->u.net->sport,
375 "saddr 383 "saddr", "src");
376 print_ipv6_addr(ab, &a 384 print_ipv6_addr(ab, &a->u.net->v6info.daddr,
377 a->u.n 385 a->u.net->dport,
378 "daddr 386 "daddr", "dest");
379 break; 387 break;
380 } 388 }
381 if (a->u.net->netif > 0) { 389 if (a->u.net->netif > 0) {
382 struct net_device *dev 390 struct net_device *dev;
383 391
384 /* NOTE: we always use 392 /* NOTE: we always use init's namespace */
385 dev = dev_get_by_index 393 dev = dev_get_by_index(&init_net, a->u.net->netif);
386 if (dev) { 394 if (dev) {
387 audit_log_form 395 audit_log_format(ab, " netif=%s", dev->name);
388 dev_put(dev); 396 dev_put(dev);
389 } 397 }
390 } 398 }
391 break; 399 break;
392 #ifdef CONFIG_KEYS 400 #ifdef CONFIG_KEYS
393 case LSM_AUDIT_DATA_KEY: 401 case LSM_AUDIT_DATA_KEY:
394 audit_log_format(ab, " key_ser 402 audit_log_format(ab, " key_serial=%u", a->u.key_struct.key);
395 if (a->u.key_struct.key_desc) 403 if (a->u.key_struct.key_desc) {
396 audit_log_format(ab, " 404 audit_log_format(ab, " key_desc=");
397 audit_log_untrustedstr 405 audit_log_untrustedstring(ab, a->u.key_struct.key_desc);
398 } 406 }
399 break; 407 break;
400 #endif 408 #endif
401 case LSM_AUDIT_DATA_KMOD: 409 case LSM_AUDIT_DATA_KMOD:
402 audit_log_format(ab, " kmod=") 410 audit_log_format(ab, " kmod=");
403 audit_log_untrustedstring(ab, 411 audit_log_untrustedstring(ab, a->u.kmod_name);
404 break; 412 break;
405 case LSM_AUDIT_DATA_IBPKEY: { 413 case LSM_AUDIT_DATA_IBPKEY: {
406 struct in6_addr sbn_pfx; 414 struct in6_addr sbn_pfx;
407 415
408 memset(&sbn_pfx.s6_addr, 0, 416 memset(&sbn_pfx.s6_addr, 0,
409 sizeof(sbn_pfx.s6_addr) 417 sizeof(sbn_pfx.s6_addr));
410 memcpy(&sbn_pfx.s6_addr, &a->u 418 memcpy(&sbn_pfx.s6_addr, &a->u.ibpkey->subnet_prefix,
411 sizeof(a->u.ibpkey->sub 419 sizeof(a->u.ibpkey->subnet_prefix));
412 audit_log_format(ab, " pkey=0x 420 audit_log_format(ab, " pkey=0x%x subnet_prefix=%pI6c",
413 a->u.ibpkey-> 421 a->u.ibpkey->pkey, &sbn_pfx);
414 break; 422 break;
415 } 423 }
416 case LSM_AUDIT_DATA_IBENDPORT: 424 case LSM_AUDIT_DATA_IBENDPORT:
417 audit_log_format(ab, " device= 425 audit_log_format(ab, " device=%s port_num=%u",
418 a->u.ibendpor 426 a->u.ibendport->dev_name,
419 a->u.ibendpor 427 a->u.ibendport->port);
420 break; 428 break;
421 case LSM_AUDIT_DATA_LOCKDOWN: <<
422 audit_log_format(ab, " lockdow <<
423 lockdown_reas <<
424 break; <<
425 case LSM_AUDIT_DATA_ANONINODE: <<
426 audit_log_format(ab, " anoncla <<
427 break; <<
428 } /* switch (a->type) */ 429 } /* switch (a->type) */
429 } 430 }
430 431
431 /** 432 /**
432 * common_lsm_audit - generic LSM auditing fun 433 * common_lsm_audit - generic LSM auditing function
433 * @a: auxiliary audit data 434 * @a: auxiliary audit data
434 * @pre_audit: lsm-specific pre-audit callback 435 * @pre_audit: lsm-specific pre-audit callback
435 * @post_audit: lsm-specific post-audit callba 436 * @post_audit: lsm-specific post-audit callback
436 * 437 *
437 * setup the audit buffer for common security 438 * setup the audit buffer for common security information
438 * uses callback to print LSM specific informa 439 * uses callback to print LSM specific information
439 */ 440 */
440 void common_lsm_audit(struct common_audit_data 441 void common_lsm_audit(struct common_audit_data *a,
441 void (*pre_audit)(struct audit_buffer 442 void (*pre_audit)(struct audit_buffer *, void *),
442 void (*post_audit)(struct audit_buffer 443 void (*post_audit)(struct audit_buffer *, void *))
443 { 444 {
444 struct audit_buffer *ab; 445 struct audit_buffer *ab;
445 446
446 if (a == NULL) 447 if (a == NULL)
447 return; 448 return;
448 /* we use GFP_ATOMIC so we won't sleep 449 /* we use GFP_ATOMIC so we won't sleep */
449 ab = audit_log_start(audit_context(), !! 450 ab = audit_log_start(current->audit_context, GFP_ATOMIC | __GFP_NOWARN,
450 AUDIT_AVC); 451 AUDIT_AVC);
451 452
452 if (ab == NULL) 453 if (ab == NULL)
453 return; 454 return;
454 455
455 if (pre_audit) 456 if (pre_audit)
456 pre_audit(ab, a); 457 pre_audit(ab, a);
457 458
458 dump_common_audit_data(ab, a); 459 dump_common_audit_data(ab, a);
459 460
460 if (post_audit) 461 if (post_audit)
461 post_audit(ab, a); 462 post_audit(ab, a);
462 463
463 audit_log_end(ab); 464 audit_log_end(ab);
464 } 465 }
465 466
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