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