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> 30 #include <linux/security.h>
31 31
32 /** 32 /**
33 * ipv4_skb_to_auditdata : fill auditdata from 33 * ipv4_skb_to_auditdata : fill auditdata from skb
34 * @skb : the skb 34 * @skb : the skb
35 * @ad : the audit data to fill 35 * @ad : the audit data to fill
36 * @proto : the layer 4 protocol 36 * @proto : the layer 4 protocol
37 * 37 *
38 * return 0 on success 38 * return 0 on success
39 */ 39 */
40 int ipv4_skb_to_auditdata(struct sk_buff *skb, 40 int ipv4_skb_to_auditdata(struct sk_buff *skb,
41 struct common_audit_data *ad, 41 struct common_audit_data *ad, u8 *proto)
42 { 42 {
43 int ret = 0; 43 int ret = 0;
44 struct iphdr *ih; 44 struct iphdr *ih;
45 45
46 ih = ip_hdr(skb); 46 ih = ip_hdr(skb);
>> 47 if (ih == NULL)
>> 48 return -EINVAL;
>> 49
47 ad->u.net->v4info.saddr = ih->saddr; 50 ad->u.net->v4info.saddr = ih->saddr;
48 ad->u.net->v4info.daddr = ih->daddr; 51 ad->u.net->v4info.daddr = ih->daddr;
49 52
50 if (proto) 53 if (proto)
51 *proto = ih->protocol; 54 *proto = ih->protocol;
52 /* non initial fragment */ 55 /* non initial fragment */
53 if (ntohs(ih->frag_off) & IP_OFFSET) 56 if (ntohs(ih->frag_off) & IP_OFFSET)
54 return 0; 57 return 0;
55 58
56 switch (ih->protocol) { 59 switch (ih->protocol) {
57 case IPPROTO_TCP: { 60 case IPPROTO_TCP: {
58 struct tcphdr *th = tcp_hdr(sk 61 struct tcphdr *th = tcp_hdr(skb);
>> 62 if (th == NULL)
>> 63 break;
59 64
60 ad->u.net->sport = th->source; 65 ad->u.net->sport = th->source;
61 ad->u.net->dport = th->dest; 66 ad->u.net->dport = th->dest;
62 break; 67 break;
63 } 68 }
64 case IPPROTO_UDP: { 69 case IPPROTO_UDP: {
65 struct udphdr *uh = udp_hdr(sk 70 struct udphdr *uh = udp_hdr(skb);
>> 71 if (uh == NULL)
>> 72 break;
66 73
67 ad->u.net->sport = uh->source; 74 ad->u.net->sport = uh->source;
68 ad->u.net->dport = uh->dest; 75 ad->u.net->dport = uh->dest;
69 break; 76 break;
70 } 77 }
71 case IPPROTO_DCCP: { 78 case IPPROTO_DCCP: {
72 struct dccp_hdr *dh = dccp_hdr 79 struct dccp_hdr *dh = dccp_hdr(skb);
>> 80 if (dh == NULL)
>> 81 break;
73 82
74 ad->u.net->sport = dh->dccph_s 83 ad->u.net->sport = dh->dccph_sport;
75 ad->u.net->dport = dh->dccph_d 84 ad->u.net->dport = dh->dccph_dport;
76 break; 85 break;
77 } 86 }
78 case IPPROTO_SCTP: { 87 case IPPROTO_SCTP: {
79 struct sctphdr *sh = sctp_hdr( 88 struct sctphdr *sh = sctp_hdr(skb);
80 !! 89 if (sh == NULL)
>> 90 break;
81 ad->u.net->sport = sh->source; 91 ad->u.net->sport = sh->source;
82 ad->u.net->dport = sh->dest; 92 ad->u.net->dport = sh->dest;
83 break; 93 break;
84 } 94 }
85 default: 95 default:
86 ret = -EINVAL; 96 ret = -EINVAL;
87 } 97 }
88 return ret; 98 return ret;
89 } 99 }
90 #if IS_ENABLED(CONFIG_IPV6) 100 #if IS_ENABLED(CONFIG_IPV6)
91 /** 101 /**
92 * ipv6_skb_to_auditdata : fill auditdata from 102 * ipv6_skb_to_auditdata : fill auditdata from skb
93 * @skb : the skb 103 * @skb : the skb
94 * @ad : the audit data to fill 104 * @ad : the audit data to fill
95 * @proto : the layer 4 protocol 105 * @proto : the layer 4 protocol
96 * 106 *
97 * return 0 on success 107 * return 0 on success
98 */ 108 */
99 int ipv6_skb_to_auditdata(struct sk_buff *skb, 109 int ipv6_skb_to_auditdata(struct sk_buff *skb,
100 struct common_audit_data *ad, 110 struct common_audit_data *ad, u8 *proto)
101 { 111 {
102 int offset, ret = 0; 112 int offset, ret = 0;
103 struct ipv6hdr *ip6; 113 struct ipv6hdr *ip6;
104 u8 nexthdr; 114 u8 nexthdr;
105 __be16 frag_off; 115 __be16 frag_off;
106 116
107 ip6 = ipv6_hdr(skb); 117 ip6 = ipv6_hdr(skb);
>> 118 if (ip6 == NULL)
>> 119 return -EINVAL;
108 ad->u.net->v6info.saddr = ip6->saddr; 120 ad->u.net->v6info.saddr = ip6->saddr;
109 ad->u.net->v6info.daddr = ip6->daddr; 121 ad->u.net->v6info.daddr = ip6->daddr;
>> 122 ret = 0;
110 /* IPv6 can have several extension hea 123 /* IPv6 can have several extension header before the Transport header
111 * skip them */ 124 * skip them */
112 offset = skb_network_offset(skb); 125 offset = skb_network_offset(skb);
113 offset += sizeof(*ip6); 126 offset += sizeof(*ip6);
114 nexthdr = ip6->nexthdr; 127 nexthdr = ip6->nexthdr;
115 offset = ipv6_skip_exthdr(skb, offset, 128 offset = ipv6_skip_exthdr(skb, offset, &nexthdr, &frag_off);
116 if (offset < 0) 129 if (offset < 0)
117 return 0; 130 return 0;
118 if (proto) 131 if (proto)
119 *proto = nexthdr; 132 *proto = nexthdr;
120 switch (nexthdr) { 133 switch (nexthdr) {
121 case IPPROTO_TCP: { 134 case IPPROTO_TCP: {
122 struct tcphdr _tcph, *th; 135 struct tcphdr _tcph, *th;
123 136
124 th = skb_header_pointer(skb, o 137 th = skb_header_pointer(skb, offset, sizeof(_tcph), &_tcph);
125 if (th == NULL) 138 if (th == NULL)
126 break; 139 break;
127 140
128 ad->u.net->sport = th->source; 141 ad->u.net->sport = th->source;
129 ad->u.net->dport = th->dest; 142 ad->u.net->dport = th->dest;
130 break; 143 break;
131 } 144 }
132 case IPPROTO_UDP: { 145 case IPPROTO_UDP: {
133 struct udphdr _udph, *uh; 146 struct udphdr _udph, *uh;
134 147
135 uh = skb_header_pointer(skb, o 148 uh = skb_header_pointer(skb, offset, sizeof(_udph), &_udph);
136 if (uh == NULL) 149 if (uh == NULL)
137 break; 150 break;
138 151
139 ad->u.net->sport = uh->source; 152 ad->u.net->sport = uh->source;
140 ad->u.net->dport = uh->dest; 153 ad->u.net->dport = uh->dest;
141 break; 154 break;
142 } 155 }
143 case IPPROTO_DCCP: { 156 case IPPROTO_DCCP: {
144 struct dccp_hdr _dccph, *dh; 157 struct dccp_hdr _dccph, *dh;
145 158
146 dh = skb_header_pointer(skb, o 159 dh = skb_header_pointer(skb, offset, sizeof(_dccph), &_dccph);
147 if (dh == NULL) 160 if (dh == NULL)
148 break; 161 break;
149 162
150 ad->u.net->sport = dh->dccph_s 163 ad->u.net->sport = dh->dccph_sport;
151 ad->u.net->dport = dh->dccph_d 164 ad->u.net->dport = dh->dccph_dport;
152 break; 165 break;
153 } 166 }
154 case IPPROTO_SCTP: { 167 case IPPROTO_SCTP: {
155 struct sctphdr _sctph, *sh; 168 struct sctphdr _sctph, *sh;
156 169
157 sh = skb_header_pointer(skb, o 170 sh = skb_header_pointer(skb, offset, sizeof(_sctph), &_sctph);
158 if (sh == NULL) 171 if (sh == NULL)
159 break; 172 break;
160 ad->u.net->sport = sh->source; 173 ad->u.net->sport = sh->source;
161 ad->u.net->dport = sh->dest; 174 ad->u.net->dport = sh->dest;
162 break; 175 break;
163 } 176 }
164 default: 177 default:
165 ret = -EINVAL; 178 ret = -EINVAL;
166 } 179 }
167 return ret; 180 return ret;
168 } 181 }
169 #endif 182 #endif
170 183
171 184
172 static inline void print_ipv6_addr(struct audi 185 static inline void print_ipv6_addr(struct audit_buffer *ab,
173 const struc 186 const struct in6_addr *addr, __be16 port,
174 char *name1 187 char *name1, char *name2)
175 { 188 {
176 if (!ipv6_addr_any(addr)) 189 if (!ipv6_addr_any(addr))
177 audit_log_format(ab, " %s=%pI6 190 audit_log_format(ab, " %s=%pI6c", name1, addr);
178 if (port) 191 if (port)
179 audit_log_format(ab, " %s=%d", 192 audit_log_format(ab, " %s=%d", name2, ntohs(port));
180 } 193 }
181 194
182 static inline void print_ipv4_addr(struct audi 195 static inline void print_ipv4_addr(struct audit_buffer *ab, __be32 addr,
183 __be16 port 196 __be16 port, char *name1, char *name2)
184 { 197 {
185 if (addr) 198 if (addr)
186 audit_log_format(ab, " %s=%pI4 199 audit_log_format(ab, " %s=%pI4", name1, &addr);
187 if (port) 200 if (port)
188 audit_log_format(ab, " %s=%d", 201 audit_log_format(ab, " %s=%d", name2, ntohs(port));
189 } 202 }
190 203
191 /** 204 /**
192 * dump_common_audit_data - helper to dump com 205 * dump_common_audit_data - helper to dump common audit data
193 * @ab : the audit buffer <<
194 * @a : common audit data 206 * @a : common audit data
195 * 207 *
196 */ 208 */
197 static void dump_common_audit_data(struct audi 209 static void dump_common_audit_data(struct audit_buffer *ab,
198 struct comm 210 struct common_audit_data *a)
199 { 211 {
200 char comm[sizeof(current->comm)]; 212 char comm[sizeof(current->comm)];
201 213
202 /* 214 /*
203 * To keep stack sizes in check force !! 215 * To keep stack sizes in check force programers to notice if they
204 * start making this union too large! 216 * start making this union too large! See struct lsm_network_audit
205 * as an example of how to deal with l 217 * as an example of how to deal with large data.
206 */ 218 */
207 BUILD_BUG_ON(sizeof(a->u) > sizeof(voi 219 BUILD_BUG_ON(sizeof(a->u) > sizeof(void *)*2);
208 220
209 audit_log_format(ab, " pid=%d comm=", 221 audit_log_format(ab, " pid=%d comm=", task_tgid_nr(current));
210 audit_log_untrustedstring(ab, memcpy(c 222 audit_log_untrustedstring(ab, memcpy(comm, current->comm, sizeof(comm)));
211 223
212 switch (a->type) { 224 switch (a->type) {
213 case LSM_AUDIT_DATA_NONE: 225 case LSM_AUDIT_DATA_NONE:
214 return; 226 return;
215 case LSM_AUDIT_DATA_IPC: 227 case LSM_AUDIT_DATA_IPC:
216 audit_log_format(ab, " ipc_key !! 228 audit_log_format(ab, " key=%d ", a->u.ipc_id);
217 break; 229 break;
218 case LSM_AUDIT_DATA_CAP: 230 case LSM_AUDIT_DATA_CAP:
219 audit_log_format(ab, " capabil 231 audit_log_format(ab, " capability=%d ", a->u.cap);
220 break; 232 break;
221 case LSM_AUDIT_DATA_PATH: { 233 case LSM_AUDIT_DATA_PATH: {
222 struct inode *inode; 234 struct inode *inode;
223 235
224 audit_log_d_path(ab, " path=", 236 audit_log_d_path(ab, " path=", &a->u.path);
225 237
226 inode = d_backing_inode(a->u.p 238 inode = d_backing_inode(a->u.path.dentry);
227 if (inode) { 239 if (inode) {
228 audit_log_format(ab, " 240 audit_log_format(ab, " dev=");
229 audit_log_untrustedstr 241 audit_log_untrustedstring(ab, inode->i_sb->s_id);
230 audit_log_format(ab, " 242 audit_log_format(ab, " ino=%lu", inode->i_ino);
231 } 243 }
232 break; 244 break;
233 } 245 }
234 case LSM_AUDIT_DATA_FILE: { 246 case LSM_AUDIT_DATA_FILE: {
235 struct inode *inode; 247 struct inode *inode;
236 248
237 audit_log_d_path(ab, " path=", 249 audit_log_d_path(ab, " path=", &a->u.file->f_path);
238 250
239 inode = file_inode(a->u.file); 251 inode = file_inode(a->u.file);
240 if (inode) { 252 if (inode) {
241 audit_log_format(ab, " 253 audit_log_format(ab, " dev=");
242 audit_log_untrustedstr 254 audit_log_untrustedstring(ab, inode->i_sb->s_id);
243 audit_log_format(ab, " 255 audit_log_format(ab, " ino=%lu", inode->i_ino);
244 } 256 }
245 break; 257 break;
246 } 258 }
247 case LSM_AUDIT_DATA_IOCTL_OP: { 259 case LSM_AUDIT_DATA_IOCTL_OP: {
248 struct inode *inode; 260 struct inode *inode;
249 261
250 audit_log_d_path(ab, " path=", 262 audit_log_d_path(ab, " path=", &a->u.op->path);
251 263
252 inode = a->u.op->path.dentry-> 264 inode = a->u.op->path.dentry->d_inode;
253 if (inode) { 265 if (inode) {
254 audit_log_format(ab, " 266 audit_log_format(ab, " dev=");
255 audit_log_untrustedstr 267 audit_log_untrustedstring(ab, inode->i_sb->s_id);
256 audit_log_format(ab, " 268 audit_log_format(ab, " ino=%lu", inode->i_ino);
257 } 269 }
258 270
259 audit_log_format(ab, " ioctlcm 271 audit_log_format(ab, " ioctlcmd=0x%hx", a->u.op->cmd);
260 break; 272 break;
261 } 273 }
262 case LSM_AUDIT_DATA_DENTRY: { 274 case LSM_AUDIT_DATA_DENTRY: {
263 struct inode *inode; 275 struct inode *inode;
264 276
265 audit_log_format(ab, " name=") 277 audit_log_format(ab, " name=");
266 spin_lock(&a->u.dentry->d_lock 278 spin_lock(&a->u.dentry->d_lock);
267 audit_log_untrustedstring(ab, 279 audit_log_untrustedstring(ab, a->u.dentry->d_name.name);
268 spin_unlock(&a->u.dentry->d_lo 280 spin_unlock(&a->u.dentry->d_lock);
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 spin_lock(&dentry->d_lock);
288 audit_log_untrustedstr 299 audit_log_untrustedstring(ab, dentry->d_name.name);
289 spin_unlock(&dentry->d 300 spin_unlock(&dentry->d_lock);
>> 301 dput(dentry);
290 } 302 }
291 audit_log_format(ab, " dev="); 303 audit_log_format(ab, " dev=");
292 audit_log_untrustedstring(ab, 304 audit_log_untrustedstring(ab, inode->i_sb->s_id);
293 audit_log_format(ab, " ino=%lu 305 audit_log_format(ab, " ino=%lu", inode->i_ino);
294 rcu_read_unlock(); <<
295 break; 306 break;
296 } 307 }
297 case LSM_AUDIT_DATA_TASK: { 308 case LSM_AUDIT_DATA_TASK: {
298 struct task_struct *tsk = a->u 309 struct task_struct *tsk = a->u.tsk;
299 if (tsk) { 310 if (tsk) {
300 pid_t pid = task_tgid_ 311 pid_t pid = task_tgid_nr(tsk);
301 if (pid) { 312 if (pid) {
302 char comm[size 313 char comm[sizeof(tsk->comm)];
303 audit_log_form 314 audit_log_format(ab, " opid=%d ocomm=", pid);
304 audit_log_untr 315 audit_log_untrustedstring(ab,
305 memcpy(com 316 memcpy(comm, tsk->comm, sizeof(comm)));
306 } 317 }
307 } 318 }
308 break; 319 break;
309 } 320 }
310 case LSM_AUDIT_DATA_NET: 321 case LSM_AUDIT_DATA_NET:
311 if (a->u.net->sk) { 322 if (a->u.net->sk) {
312 const struct sock *sk 323 const struct sock *sk = a->u.net->sk;
313 const struct unix_sock !! 324 struct unix_sock *u;
314 struct unix_address *a 325 struct unix_address *addr;
315 int len = 0; 326 int len = 0;
316 char *p = NULL; 327 char *p = NULL;
317 328
318 switch (sk->sk_family) 329 switch (sk->sk_family) {
319 case AF_INET: { 330 case AF_INET: {
320 const struct i !! 331 struct inet_sock *inet = inet_sk(sk);
321 332
322 print_ipv4_add 333 print_ipv4_addr(ab, inet->inet_rcv_saddr,
323 334 inet->inet_sport,
324 335 "laddr", "lport");
325 print_ipv4_add 336 print_ipv4_addr(ab, inet->inet_daddr,
326 337 inet->inet_dport,
327 338 "faddr", "fport");
328 break; 339 break;
329 } 340 }
330 #if IS_ENABLED(CONFIG_IPV6) 341 #if IS_ENABLED(CONFIG_IPV6)
331 case AF_INET6: { 342 case AF_INET6: {
332 const struct i !! 343 struct inet_sock *inet = inet_sk(sk);
333 344
334 print_ipv6_add 345 print_ipv6_addr(ab, &sk->sk_v6_rcv_saddr,
335 346 inet->inet_sport,
336 347 "laddr", "lport");
337 print_ipv6_add 348 print_ipv6_addr(ab, &sk->sk_v6_daddr,
338 349 inet->inet_dport,
339 350 "faddr", "fport");
340 break; 351 break;
341 } 352 }
342 #endif 353 #endif
343 case AF_UNIX: 354 case AF_UNIX:
344 u = unix_sk(sk 355 u = unix_sk(sk);
345 addr = smp_loa 356 addr = smp_load_acquire(&u->addr);
346 if (!addr) 357 if (!addr)
347 break; 358 break;
348 if (u->path.de 359 if (u->path.dentry) {
349 audit_ 360 audit_log_d_path(ab, " path=", &u->path);
350 break; 361 break;
351 } 362 }
352 len = addr->le 363 len = addr->len-sizeof(short);
353 p = &addr->nam 364 p = &addr->name->sun_path[0];
354 audit_log_form 365 audit_log_format(ab, " path=");
355 if (*p) 366 if (*p)
356 audit_ 367 audit_log_untrustedstring(ab, p);
357 else 368 else
358 audit_ 369 audit_log_n_hex(ab, p, len);
359 break; 370 break;
360 } 371 }
361 } 372 }
362 373
363 switch (a->u.net->family) { 374 switch (a->u.net->family) {
364 case AF_INET: 375 case AF_INET:
365 print_ipv4_addr(ab, a- 376 print_ipv4_addr(ab, a->u.net->v4info.saddr,
366 a->u.n 377 a->u.net->sport,
367 "saddr 378 "saddr", "src");
368 print_ipv4_addr(ab, a- 379 print_ipv4_addr(ab, a->u.net->v4info.daddr,
369 a->u.n 380 a->u.net->dport,
370 "daddr 381 "daddr", "dest");
371 break; 382 break;
372 case AF_INET6: 383 case AF_INET6:
373 print_ipv6_addr(ab, &a 384 print_ipv6_addr(ab, &a->u.net->v6info.saddr,
374 a->u.n 385 a->u.net->sport,
375 "saddr 386 "saddr", "src");
376 print_ipv6_addr(ab, &a 387 print_ipv6_addr(ab, &a->u.net->v6info.daddr,
377 a->u.n 388 a->u.net->dport,
378 "daddr 389 "daddr", "dest");
379 break; 390 break;
380 } 391 }
381 if (a->u.net->netif > 0) { 392 if (a->u.net->netif > 0) {
382 struct net_device *dev 393 struct net_device *dev;
383 394
384 /* NOTE: we always use 395 /* NOTE: we always use init's namespace */
385 dev = dev_get_by_index 396 dev = dev_get_by_index(&init_net, a->u.net->netif);
386 if (dev) { 397 if (dev) {
387 audit_log_form 398 audit_log_format(ab, " netif=%s", dev->name);
388 dev_put(dev); 399 dev_put(dev);
389 } 400 }
390 } 401 }
391 break; 402 break;
392 #ifdef CONFIG_KEYS 403 #ifdef CONFIG_KEYS
393 case LSM_AUDIT_DATA_KEY: 404 case LSM_AUDIT_DATA_KEY:
394 audit_log_format(ab, " key_ser 405 audit_log_format(ab, " key_serial=%u", a->u.key_struct.key);
395 if (a->u.key_struct.key_desc) 406 if (a->u.key_struct.key_desc) {
396 audit_log_format(ab, " 407 audit_log_format(ab, " key_desc=");
397 audit_log_untrustedstr 408 audit_log_untrustedstring(ab, a->u.key_struct.key_desc);
398 } 409 }
399 break; 410 break;
400 #endif 411 #endif
401 case LSM_AUDIT_DATA_KMOD: 412 case LSM_AUDIT_DATA_KMOD:
402 audit_log_format(ab, " kmod=") 413 audit_log_format(ab, " kmod=");
403 audit_log_untrustedstring(ab, 414 audit_log_untrustedstring(ab, a->u.kmod_name);
404 break; 415 break;
405 case LSM_AUDIT_DATA_IBPKEY: { 416 case LSM_AUDIT_DATA_IBPKEY: {
406 struct in6_addr sbn_pfx; 417 struct in6_addr sbn_pfx;
407 418
408 memset(&sbn_pfx.s6_addr, 0, 419 memset(&sbn_pfx.s6_addr, 0,
409 sizeof(sbn_pfx.s6_addr) 420 sizeof(sbn_pfx.s6_addr));
410 memcpy(&sbn_pfx.s6_addr, &a->u 421 memcpy(&sbn_pfx.s6_addr, &a->u.ibpkey->subnet_prefix,
411 sizeof(a->u.ibpkey->sub 422 sizeof(a->u.ibpkey->subnet_prefix));
412 audit_log_format(ab, " pkey=0x 423 audit_log_format(ab, " pkey=0x%x subnet_prefix=%pI6c",
413 a->u.ibpkey-> 424 a->u.ibpkey->pkey, &sbn_pfx);
414 break; 425 break;
415 } 426 }
416 case LSM_AUDIT_DATA_IBENDPORT: 427 case LSM_AUDIT_DATA_IBENDPORT:
417 audit_log_format(ab, " device= 428 audit_log_format(ab, " device=%s port_num=%u",
418 a->u.ibendpor 429 a->u.ibendport->dev_name,
419 a->u.ibendpor 430 a->u.ibendport->port);
420 break; 431 break;
421 case LSM_AUDIT_DATA_LOCKDOWN: 432 case LSM_AUDIT_DATA_LOCKDOWN:
422 audit_log_format(ab, " lockdow 433 audit_log_format(ab, " lockdown_reason=\"%s\"",
423 lockdown_reas 434 lockdown_reasons[a->u.reason]);
424 break; <<
425 case LSM_AUDIT_DATA_ANONINODE: <<
426 audit_log_format(ab, " anoncla <<
427 break; 435 break;
428 } /* switch (a->type) */ 436 } /* switch (a->type) */
429 } 437 }
430 438
431 /** 439 /**
432 * common_lsm_audit - generic LSM auditing fun 440 * common_lsm_audit - generic LSM auditing function
433 * @a: auxiliary audit data 441 * @a: auxiliary audit data
434 * @pre_audit: lsm-specific pre-audit callback 442 * @pre_audit: lsm-specific pre-audit callback
435 * @post_audit: lsm-specific post-audit callba 443 * @post_audit: lsm-specific post-audit callback
436 * 444 *
437 * setup the audit buffer for common security 445 * setup the audit buffer for common security information
438 * uses callback to print LSM specific informa 446 * uses callback to print LSM specific information
439 */ 447 */
440 void common_lsm_audit(struct common_audit_data 448 void common_lsm_audit(struct common_audit_data *a,
441 void (*pre_audit)(struct audit_buffer 449 void (*pre_audit)(struct audit_buffer *, void *),
442 void (*post_audit)(struct audit_buffer 450 void (*post_audit)(struct audit_buffer *, void *))
443 { 451 {
444 struct audit_buffer *ab; 452 struct audit_buffer *ab;
445 453
446 if (a == NULL) 454 if (a == NULL)
447 return; 455 return;
448 /* we use GFP_ATOMIC so we won't sleep 456 /* we use GFP_ATOMIC so we won't sleep */
449 ab = audit_log_start(audit_context(), 457 ab = audit_log_start(audit_context(), GFP_ATOMIC | __GFP_NOWARN,
450 AUDIT_AVC); 458 AUDIT_AVC);
451 459
452 if (ab == NULL) 460 if (ab == NULL)
453 return; 461 return;
454 462
455 if (pre_audit) 463 if (pre_audit)
456 pre_audit(ab, a); 464 pre_audit(ab, a);
457 465
458 dump_common_audit_data(ab, a); 466 dump_common_audit_data(ab, a);
459 467
460 if (post_audit) 468 if (post_audit)
461 post_audit(ab, a); 469 post_audit(ab, a);
462 470
463 audit_log_end(ab); 471 audit_log_end(ab);
464 } 472 }
465 473
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