diff options
Diffstat (limited to 'net/netlabel/netlabel_mgmt.c')
-rw-r--r-- | net/netlabel/netlabel_mgmt.c | 541 |
1 files changed, 276 insertions, 265 deletions
diff --git a/net/netlabel/netlabel_mgmt.c b/net/netlabel/netlabel_mgmt.c index 85bc11a1fc46..8626c9f678eb 100644 --- a/net/netlabel/netlabel_mgmt.c +++ b/net/netlabel/netlabel_mgmt.c | |||
@@ -42,15 +42,29 @@ | |||
42 | #include "netlabel_user.h" | 42 | #include "netlabel_user.h" |
43 | #include "netlabel_mgmt.h" | 43 | #include "netlabel_mgmt.h" |
44 | 44 | ||
45 | /* Argument struct for netlbl_domhsh_walk() */ | ||
46 | struct netlbl_domhsh_walk_arg { | ||
47 | struct netlink_callback *nl_cb; | ||
48 | struct sk_buff *skb; | ||
49 | u32 seq; | ||
50 | }; | ||
51 | |||
45 | /* NetLabel Generic NETLINK CIPSOv4 family */ | 52 | /* NetLabel Generic NETLINK CIPSOv4 family */ |
46 | static struct genl_family netlbl_mgmt_gnl_family = { | 53 | static struct genl_family netlbl_mgmt_gnl_family = { |
47 | .id = GENL_ID_GENERATE, | 54 | .id = GENL_ID_GENERATE, |
48 | .hdrsize = 0, | 55 | .hdrsize = 0, |
49 | .name = NETLBL_NLTYPE_MGMT_NAME, | 56 | .name = NETLBL_NLTYPE_MGMT_NAME, |
50 | .version = NETLBL_PROTO_VERSION, | 57 | .version = NETLBL_PROTO_VERSION, |
51 | .maxattr = 0, | 58 | .maxattr = NLBL_MGMT_A_MAX, |
52 | }; | 59 | }; |
53 | 60 | ||
61 | /* NetLabel Netlink attribute policy */ | ||
62 | static struct nla_policy netlbl_mgmt_genl_policy[NLBL_MGMT_A_MAX + 1] = { | ||
63 | [NLBL_MGMT_A_DOMAIN] = { .type = NLA_NUL_STRING }, | ||
64 | [NLBL_MGMT_A_PROTOCOL] = { .type = NLA_U32 }, | ||
65 | [NLBL_MGMT_A_VERSION] = { .type = NLA_U32 }, | ||
66 | [NLBL_MGMT_A_CV4DOI] = { .type = NLA_U32 }, | ||
67 | }; | ||
54 | 68 | ||
55 | /* | 69 | /* |
56 | * NetLabel Command Handlers | 70 | * NetLabel Command Handlers |
@@ -70,97 +84,62 @@ static struct genl_family netlbl_mgmt_gnl_family = { | |||
70 | static int netlbl_mgmt_add(struct sk_buff *skb, struct genl_info *info) | 84 | static int netlbl_mgmt_add(struct sk_buff *skb, struct genl_info *info) |
71 | { | 85 | { |
72 | int ret_val = -EINVAL; | 86 | int ret_val = -EINVAL; |
73 | struct nlattr *msg_ptr = netlbl_netlink_payload_data(skb); | ||
74 | int msg_len = netlbl_netlink_payload_len(skb); | ||
75 | u32 count; | ||
76 | struct netlbl_dom_map *entry = NULL; | 87 | struct netlbl_dom_map *entry = NULL; |
77 | u32 iter; | 88 | size_t tmp_size; |
78 | u32 tmp_val; | 89 | u32 tmp_val; |
79 | int tmp_size; | ||
80 | 90 | ||
81 | ret_val = netlbl_netlink_cap_check(skb, CAP_NET_ADMIN); | 91 | if (!info->attrs[NLBL_MGMT_A_DOMAIN] || |
82 | if (ret_val != 0) | 92 | !info->attrs[NLBL_MGMT_A_PROTOCOL]) |
83 | goto add_failure; | 93 | goto add_failure; |
84 | 94 | ||
85 | if (msg_len < NETLBL_LEN_U32) | 95 | entry = kzalloc(sizeof(*entry), GFP_KERNEL); |
96 | if (entry == NULL) { | ||
97 | ret_val = -ENOMEM; | ||
98 | goto add_failure; | ||
99 | } | ||
100 | tmp_size = nla_len(info->attrs[NLBL_MGMT_A_DOMAIN]); | ||
101 | entry->domain = kmalloc(tmp_size, GFP_KERNEL); | ||
102 | if (entry->domain == NULL) { | ||
103 | ret_val = -ENOMEM; | ||
86 | goto add_failure; | 104 | goto add_failure; |
87 | count = netlbl_getinc_u32(&msg_ptr, &msg_len); | 105 | } |
106 | entry->type = nla_get_u32(info->attrs[NLBL_MGMT_A_PROTOCOL]); | ||
107 | nla_strlcpy(entry->domain, info->attrs[NLBL_MGMT_A_DOMAIN], tmp_size); | ||
88 | 108 | ||
89 | for (iter = 0; iter < count && msg_len > 0; iter++, entry = NULL) { | 109 | switch (entry->type) { |
90 | if (msg_len <= 0) { | 110 | case NETLBL_NLTYPE_UNLABELED: |
91 | ret_val = -EINVAL; | 111 | ret_val = netlbl_domhsh_add(entry); |
92 | goto add_failure; | 112 | break; |
93 | } | 113 | case NETLBL_NLTYPE_CIPSOV4: |
94 | entry = kzalloc(sizeof(*entry), GFP_KERNEL); | 114 | if (!info->attrs[NLBL_MGMT_A_CV4DOI]) |
95 | if (entry == NULL) { | ||
96 | ret_val = -ENOMEM; | ||
97 | goto add_failure; | ||
98 | } | ||
99 | tmp_size = nla_len(msg_ptr); | ||
100 | if (tmp_size <= 0 || tmp_size > msg_len) { | ||
101 | ret_val = -EINVAL; | ||
102 | goto add_failure; | ||
103 | } | ||
104 | entry->domain = kmalloc(tmp_size, GFP_KERNEL); | ||
105 | if (entry->domain == NULL) { | ||
106 | ret_val = -ENOMEM; | ||
107 | goto add_failure; | 115 | goto add_failure; |
108 | } | ||
109 | nla_strlcpy(entry->domain, msg_ptr, tmp_size); | ||
110 | entry->domain[tmp_size - 1] = '\0'; | ||
111 | msg_ptr = nla_next(msg_ptr, &msg_len); | ||
112 | 116 | ||
113 | if (msg_len < NETLBL_LEN_U32) { | 117 | tmp_val = nla_get_u32(info->attrs[NLBL_MGMT_A_CV4DOI]); |
114 | ret_val = -EINVAL; | 118 | /* We should be holding a rcu_read_lock() here while we hold |
115 | goto add_failure; | 119 | * the result but since the entry will always be deleted when |
116 | } | 120 | * the CIPSO DOI is deleted we aren't going to keep the |
117 | tmp_val = netlbl_getinc_u32(&msg_ptr, &msg_len); | 121 | * lock. */ |
118 | entry->type = tmp_val; | 122 | rcu_read_lock(); |
119 | switch (tmp_val) { | 123 | entry->type_def.cipsov4 = cipso_v4_doi_getdef(tmp_val); |
120 | case NETLBL_NLTYPE_UNLABELED: | 124 | if (entry->type_def.cipsov4 == NULL) { |
121 | ret_val = netlbl_domhsh_add(entry); | ||
122 | break; | ||
123 | case NETLBL_NLTYPE_CIPSOV4: | ||
124 | if (msg_len < NETLBL_LEN_U32) { | ||
125 | ret_val = -EINVAL; | ||
126 | goto add_failure; | ||
127 | } | ||
128 | tmp_val = netlbl_getinc_u32(&msg_ptr, &msg_len); | ||
129 | /* We should be holding a rcu_read_lock() here | ||
130 | * while we hold the result but since the entry | ||
131 | * will always be deleted when the CIPSO DOI | ||
132 | * is deleted we aren't going to keep the lock. */ | ||
133 | rcu_read_lock(); | ||
134 | entry->type_def.cipsov4 = cipso_v4_doi_getdef(tmp_val); | ||
135 | if (entry->type_def.cipsov4 == NULL) { | ||
136 | rcu_read_unlock(); | ||
137 | ret_val = -EINVAL; | ||
138 | goto add_failure; | ||
139 | } | ||
140 | ret_val = netlbl_domhsh_add(entry); | ||
141 | rcu_read_unlock(); | 125 | rcu_read_unlock(); |
142 | break; | ||
143 | default: | ||
144 | ret_val = -EINVAL; | ||
145 | } | ||
146 | if (ret_val != 0) | ||
147 | goto add_failure; | 126 | goto add_failure; |
127 | } | ||
128 | ret_val = netlbl_domhsh_add(entry); | ||
129 | rcu_read_unlock(); | ||
130 | break; | ||
131 | default: | ||
132 | goto add_failure; | ||
148 | } | 133 | } |
134 | if (ret_val != 0) | ||
135 | goto add_failure; | ||
149 | 136 | ||
150 | netlbl_netlink_send_ack(info, | ||
151 | netlbl_mgmt_gnl_family.id, | ||
152 | NLBL_MGMT_C_ACK, | ||
153 | NETLBL_E_OK); | ||
154 | return 0; | 137 | return 0; |
155 | 138 | ||
156 | add_failure: | 139 | add_failure: |
157 | if (entry) | 140 | if (entry) |
158 | kfree(entry->domain); | 141 | kfree(entry->domain); |
159 | kfree(entry); | 142 | kfree(entry); |
160 | netlbl_netlink_send_ack(info, | ||
161 | netlbl_mgmt_gnl_family.id, | ||
162 | NLBL_MGMT_C_ACK, | ||
163 | -ret_val); | ||
164 | return ret_val; | 143 | return ret_val; |
165 | } | 144 | } |
166 | 145 | ||
@@ -176,87 +155,98 @@ add_failure: | |||
176 | */ | 155 | */ |
177 | static int netlbl_mgmt_remove(struct sk_buff *skb, struct genl_info *info) | 156 | static int netlbl_mgmt_remove(struct sk_buff *skb, struct genl_info *info) |
178 | { | 157 | { |
179 | int ret_val = -EINVAL; | 158 | char *domain; |
180 | struct nlattr *msg_ptr = netlbl_netlink_payload_data(skb); | ||
181 | int msg_len = netlbl_netlink_payload_len(skb); | ||
182 | u32 count; | ||
183 | u32 iter; | ||
184 | int tmp_size; | ||
185 | unsigned char *domain; | ||
186 | |||
187 | ret_val = netlbl_netlink_cap_check(skb, CAP_NET_ADMIN); | ||
188 | if (ret_val != 0) | ||
189 | goto remove_return; | ||
190 | 159 | ||
191 | if (msg_len < NETLBL_LEN_U32) | 160 | if (!info->attrs[NLBL_MGMT_A_DOMAIN]) |
192 | goto remove_return; | 161 | return -EINVAL; |
193 | count = netlbl_getinc_u32(&msg_ptr, &msg_len); | ||
194 | 162 | ||
195 | for (iter = 0; iter < count && msg_len > 0; iter++) { | 163 | domain = nla_data(info->attrs[NLBL_MGMT_A_DOMAIN]); |
196 | if (msg_len <= 0) { | 164 | return netlbl_domhsh_remove(domain); |
197 | ret_val = -EINVAL; | 165 | } |
198 | goto remove_return; | 166 | |
199 | } | 167 | /** |
200 | tmp_size = nla_len(msg_ptr); | 168 | * netlbl_mgmt_listall_cb - netlbl_domhsh_walk() callback for LISTALL |
201 | domain = nla_data(msg_ptr); | 169 | * @entry: the domain mapping hash table entry |
202 | if (tmp_size <= 0 || tmp_size > msg_len || | 170 | * @arg: the netlbl_domhsh_walk_arg structure |
203 | domain[tmp_size - 1] != '\0') { | 171 | * |
204 | ret_val = -EINVAL; | 172 | * Description: |
205 | goto remove_return; | 173 | * This function is designed to be used as a callback to the |
206 | } | 174 | * netlbl_domhsh_walk() function for use in generating a response for a LISTALL |
207 | ret_val = netlbl_domhsh_remove(domain); | 175 | * message. Returns the size of the message on success, negative values on |
176 | * failure. | ||
177 | * | ||
178 | */ | ||
179 | static int netlbl_mgmt_listall_cb(struct netlbl_dom_map *entry, void *arg) | ||
180 | { | ||
181 | int ret_val = -ENOMEM; | ||
182 | struct netlbl_domhsh_walk_arg *cb_arg = arg; | ||
183 | void *data; | ||
184 | |||
185 | data = netlbl_netlink_hdr_put(cb_arg->skb, | ||
186 | NETLINK_CB(cb_arg->nl_cb->skb).pid, | ||
187 | cb_arg->seq, | ||
188 | netlbl_mgmt_gnl_family.id, | ||
189 | NLM_F_MULTI, | ||
190 | NLBL_MGMT_C_LISTALL); | ||
191 | if (data == NULL) | ||
192 | goto listall_cb_failure; | ||
193 | |||
194 | ret_val = nla_put_string(cb_arg->skb, | ||
195 | NLBL_MGMT_A_DOMAIN, | ||
196 | entry->domain); | ||
197 | if (ret_val != 0) | ||
198 | goto listall_cb_failure; | ||
199 | ret_val = nla_put_u32(cb_arg->skb, NLBL_MGMT_A_PROTOCOL, entry->type); | ||
200 | if (ret_val != 0) | ||
201 | goto listall_cb_failure; | ||
202 | switch (entry->type) { | ||
203 | case NETLBL_NLTYPE_CIPSOV4: | ||
204 | ret_val = nla_put_u32(cb_arg->skb, | ||
205 | NLBL_MGMT_A_CV4DOI, | ||
206 | entry->type_def.cipsov4->doi); | ||
208 | if (ret_val != 0) | 207 | if (ret_val != 0) |
209 | goto remove_return; | 208 | goto listall_cb_failure; |
210 | msg_ptr = nla_next(msg_ptr, &msg_len); | 209 | break; |
211 | } | 210 | } |
212 | 211 | ||
213 | ret_val = 0; | 212 | cb_arg->seq++; |
213 | return genlmsg_end(cb_arg->skb, data); | ||
214 | 214 | ||
215 | remove_return: | 215 | listall_cb_failure: |
216 | netlbl_netlink_send_ack(info, | 216 | genlmsg_cancel(cb_arg->skb, data); |
217 | netlbl_mgmt_gnl_family.id, | ||
218 | NLBL_MGMT_C_ACK, | ||
219 | -ret_val); | ||
220 | return ret_val; | 217 | return ret_val; |
221 | } | 218 | } |
222 | 219 | ||
223 | /** | 220 | /** |
224 | * netlbl_mgmt_list - Handle a LIST message | 221 | * netlbl_mgmt_listall - Handle a LISTALL message |
225 | * @skb: the NETLINK buffer | 222 | * @skb: the NETLINK buffer |
226 | * @info: the Generic NETLINK info block | 223 | * @cb: the NETLINK callback |
227 | * | 224 | * |
228 | * Description: | 225 | * Description: |
229 | * Process a user generated LIST message and dumps the domain hash table in a | 226 | * Process a user generated LISTALL message and dumps the domain hash table in |
230 | * form suitable for use in a kernel generated LIST message. Returns zero on | 227 | * a form suitable for use in a kernel generated LISTALL message. Returns zero |
231 | * success, negative values on failure. | 228 | * on success, negative values on failure. |
232 | * | 229 | * |
233 | */ | 230 | */ |
234 | static int netlbl_mgmt_list(struct sk_buff *skb, struct genl_info *info) | 231 | static int netlbl_mgmt_listall(struct sk_buff *skb, |
232 | struct netlink_callback *cb) | ||
235 | { | 233 | { |
236 | int ret_val = -ENOMEM; | 234 | struct netlbl_domhsh_walk_arg cb_arg; |
237 | struct sk_buff *ans_skb; | 235 | u32 skip_bkt = cb->args[0]; |
238 | 236 | u32 skip_chain = cb->args[1]; | |
239 | ans_skb = netlbl_domhsh_dump(NLMSG_SPACE(GENL_HDRLEN)); | 237 | |
240 | if (ans_skb == NULL) | 238 | cb_arg.nl_cb = cb; |
241 | goto list_failure; | 239 | cb_arg.skb = skb; |
242 | netlbl_netlink_hdr_push(ans_skb, | 240 | cb_arg.seq = cb->nlh->nlmsg_seq; |
243 | info->snd_pid, | 241 | |
244 | 0, | 242 | netlbl_domhsh_walk(&skip_bkt, |
245 | netlbl_mgmt_gnl_family.id, | 243 | &skip_chain, |
246 | NLBL_MGMT_C_LIST); | 244 | netlbl_mgmt_listall_cb, |
247 | 245 | &cb_arg); | |
248 | ret_val = netlbl_netlink_snd(ans_skb, info->snd_pid); | 246 | |
249 | if (ret_val != 0) | 247 | cb->args[0] = skip_bkt; |
250 | goto list_failure; | 248 | cb->args[1] = skip_chain; |
251 | 249 | return skb->len; | |
252 | return 0; | ||
253 | |||
254 | list_failure: | ||
255 | netlbl_netlink_send_ack(info, | ||
256 | netlbl_mgmt_gnl_family.id, | ||
257 | NLBL_MGMT_C_ACK, | ||
258 | -ret_val); | ||
259 | return ret_val; | ||
260 | } | 250 | } |
261 | 251 | ||
262 | /** | 252 | /** |
@@ -272,68 +262,51 @@ list_failure: | |||
272 | static int netlbl_mgmt_adddef(struct sk_buff *skb, struct genl_info *info) | 262 | static int netlbl_mgmt_adddef(struct sk_buff *skb, struct genl_info *info) |
273 | { | 263 | { |
274 | int ret_val = -EINVAL; | 264 | int ret_val = -EINVAL; |
275 | struct nlattr *msg_ptr = netlbl_netlink_payload_data(skb); | ||
276 | int msg_len = netlbl_netlink_payload_len(skb); | ||
277 | struct netlbl_dom_map *entry = NULL; | 265 | struct netlbl_dom_map *entry = NULL; |
278 | u32 tmp_val; | 266 | u32 tmp_val; |
279 | 267 | ||
280 | ret_val = netlbl_netlink_cap_check(skb, CAP_NET_ADMIN); | 268 | if (!info->attrs[NLBL_MGMT_A_PROTOCOL]) |
281 | if (ret_val != 0) | ||
282 | goto adddef_failure; | ||
283 | |||
284 | if (msg_len < NETLBL_LEN_U32) | ||
285 | goto adddef_failure; | 269 | goto adddef_failure; |
286 | tmp_val = netlbl_getinc_u32(&msg_ptr, &msg_len); | ||
287 | 270 | ||
288 | entry = kzalloc(sizeof(*entry), GFP_KERNEL); | 271 | entry = kzalloc(sizeof(*entry), GFP_KERNEL); |
289 | if (entry == NULL) { | 272 | if (entry == NULL) { |
290 | ret_val = -ENOMEM; | 273 | ret_val = -ENOMEM; |
291 | goto adddef_failure; | 274 | goto adddef_failure; |
292 | } | 275 | } |
276 | entry->type = nla_get_u32(info->attrs[NLBL_MGMT_A_PROTOCOL]); | ||
293 | 277 | ||
294 | entry->type = tmp_val; | ||
295 | switch (entry->type) { | 278 | switch (entry->type) { |
296 | case NETLBL_NLTYPE_UNLABELED: | 279 | case NETLBL_NLTYPE_UNLABELED: |
297 | ret_val = netlbl_domhsh_add_default(entry); | 280 | ret_val = netlbl_domhsh_add_default(entry); |
298 | break; | 281 | break; |
299 | case NETLBL_NLTYPE_CIPSOV4: | 282 | case NETLBL_NLTYPE_CIPSOV4: |
300 | if (msg_len < NETLBL_LEN_U32) { | 283 | if (!info->attrs[NLBL_MGMT_A_CV4DOI]) |
301 | ret_val = -EINVAL; | ||
302 | goto adddef_failure; | 284 | goto adddef_failure; |
303 | } | 285 | |
304 | tmp_val = netlbl_getinc_u32(&msg_ptr, &msg_len); | 286 | tmp_val = nla_get_u32(info->attrs[NLBL_MGMT_A_CV4DOI]); |
305 | /* We should be holding a rcu_read_lock here while we | 287 | /* We should be holding a rcu_read_lock() here while we hold |
306 | * hold the result but since the entry will always be | 288 | * the result but since the entry will always be deleted when |
307 | * deleted when the CIPSO DOI is deleted we are going | 289 | * the CIPSO DOI is deleted we aren't going to keep the |
308 | * to skip the lock. */ | 290 | * lock. */ |
309 | rcu_read_lock(); | 291 | rcu_read_lock(); |
310 | entry->type_def.cipsov4 = cipso_v4_doi_getdef(tmp_val); | 292 | entry->type_def.cipsov4 = cipso_v4_doi_getdef(tmp_val); |
311 | if (entry->type_def.cipsov4 == NULL) { | 293 | if (entry->type_def.cipsov4 == NULL) { |
312 | rcu_read_unlock(); | 294 | rcu_read_unlock(); |
313 | ret_val = -EINVAL; | ||
314 | goto adddef_failure; | 295 | goto adddef_failure; |
315 | } | 296 | } |
316 | ret_val = netlbl_domhsh_add_default(entry); | 297 | ret_val = netlbl_domhsh_add_default(entry); |
317 | rcu_read_unlock(); | 298 | rcu_read_unlock(); |
318 | break; | 299 | break; |
319 | default: | 300 | default: |
320 | ret_val = -EINVAL; | 301 | goto adddef_failure; |
321 | } | 302 | } |
322 | if (ret_val != 0) | 303 | if (ret_val != 0) |
323 | goto adddef_failure; | 304 | goto adddef_failure; |
324 | 305 | ||
325 | netlbl_netlink_send_ack(info, | ||
326 | netlbl_mgmt_gnl_family.id, | ||
327 | NLBL_MGMT_C_ACK, | ||
328 | NETLBL_E_OK); | ||
329 | return 0; | 306 | return 0; |
330 | 307 | ||
331 | adddef_failure: | 308 | adddef_failure: |
332 | kfree(entry); | 309 | kfree(entry); |
333 | netlbl_netlink_send_ack(info, | ||
334 | netlbl_mgmt_gnl_family.id, | ||
335 | NLBL_MGMT_C_ACK, | ||
336 | -ret_val); | ||
337 | return ret_val; | 310 | return ret_val; |
338 | } | 311 | } |
339 | 312 | ||
@@ -349,20 +322,7 @@ adddef_failure: | |||
349 | */ | 322 | */ |
350 | static int netlbl_mgmt_removedef(struct sk_buff *skb, struct genl_info *info) | 323 | static int netlbl_mgmt_removedef(struct sk_buff *skb, struct genl_info *info) |
351 | { | 324 | { |
352 | int ret_val; | 325 | return netlbl_domhsh_remove_default(); |
353 | |||
354 | ret_val = netlbl_netlink_cap_check(skb, CAP_NET_ADMIN); | ||
355 | if (ret_val != 0) | ||
356 | goto removedef_return; | ||
357 | |||
358 | ret_val = netlbl_domhsh_remove_default(); | ||
359 | |||
360 | removedef_return: | ||
361 | netlbl_netlink_send_ack(info, | ||
362 | netlbl_mgmt_gnl_family.id, | ||
363 | NLBL_MGMT_C_ACK, | ||
364 | -ret_val); | ||
365 | return ret_val; | ||
366 | } | 326 | } |
367 | 327 | ||
368 | /** | 328 | /** |
@@ -379,88 +339,131 @@ removedef_return: | |||
379 | static int netlbl_mgmt_listdef(struct sk_buff *skb, struct genl_info *info) | 339 | static int netlbl_mgmt_listdef(struct sk_buff *skb, struct genl_info *info) |
380 | { | 340 | { |
381 | int ret_val = -ENOMEM; | 341 | int ret_val = -ENOMEM; |
382 | struct sk_buff *ans_skb; | 342 | struct sk_buff *ans_skb = NULL; |
343 | void *data; | ||
344 | struct netlbl_dom_map *entry; | ||
383 | 345 | ||
384 | ans_skb = netlbl_domhsh_dump_default(NLMSG_SPACE(GENL_HDRLEN)); | 346 | ans_skb = nlmsg_new(NLMSG_GOODSIZE, GFP_KERNEL); |
385 | if (ans_skb == NULL) | 347 | if (ans_skb == NULL) |
348 | return -ENOMEM; | ||
349 | data = netlbl_netlink_hdr_put(ans_skb, | ||
350 | info->snd_pid, | ||
351 | info->snd_seq, | ||
352 | netlbl_mgmt_gnl_family.id, | ||
353 | 0, | ||
354 | NLBL_MGMT_C_LISTDEF); | ||
355 | if (data == NULL) | ||
386 | goto listdef_failure; | 356 | goto listdef_failure; |
387 | netlbl_netlink_hdr_push(ans_skb, | ||
388 | info->snd_pid, | ||
389 | 0, | ||
390 | netlbl_mgmt_gnl_family.id, | ||
391 | NLBL_MGMT_C_LISTDEF); | ||
392 | 357 | ||
393 | ret_val = netlbl_netlink_snd(ans_skb, info->snd_pid); | 358 | rcu_read_lock(); |
359 | entry = netlbl_domhsh_getentry(NULL); | ||
360 | if (entry == NULL) { | ||
361 | ret_val = -ENOENT; | ||
362 | goto listdef_failure_lock; | ||
363 | } | ||
364 | ret_val = nla_put_u32(ans_skb, NLBL_MGMT_A_PROTOCOL, entry->type); | ||
394 | if (ret_val != 0) | 365 | if (ret_val != 0) |
395 | goto listdef_failure; | 366 | goto listdef_failure_lock; |
367 | switch (entry->type) { | ||
368 | case NETLBL_NLTYPE_CIPSOV4: | ||
369 | ret_val = nla_put_u32(ans_skb, | ||
370 | NLBL_MGMT_A_CV4DOI, | ||
371 | entry->type_def.cipsov4->doi); | ||
372 | if (ret_val != 0) | ||
373 | goto listdef_failure_lock; | ||
374 | break; | ||
375 | } | ||
376 | rcu_read_unlock(); | ||
396 | 377 | ||
378 | genlmsg_end(ans_skb, data); | ||
379 | |||
380 | ret_val = genlmsg_unicast(ans_skb, info->snd_pid); | ||
381 | if (ret_val != 0) | ||
382 | goto listdef_failure; | ||
397 | return 0; | 383 | return 0; |
398 | 384 | ||
385 | listdef_failure_lock: | ||
386 | rcu_read_unlock(); | ||
399 | listdef_failure: | 387 | listdef_failure: |
400 | netlbl_netlink_send_ack(info, | 388 | kfree_skb(ans_skb); |
401 | netlbl_mgmt_gnl_family.id, | ||
402 | NLBL_MGMT_C_ACK, | ||
403 | -ret_val); | ||
404 | return ret_val; | 389 | return ret_val; |
405 | } | 390 | } |
406 | 391 | ||
407 | /** | 392 | /** |
408 | * netlbl_mgmt_modules - Handle a MODULES message | 393 | * netlbl_mgmt_protocols_cb - Write an individual PROTOCOL message response |
409 | * @skb: the NETLINK buffer | 394 | * @skb: the skb to write to |
410 | * @info: the Generic NETLINK info block | 395 | * @seq: the NETLINK sequence number |
396 | * @cb: the NETLINK callback | ||
397 | * @protocol: the NetLabel protocol to use in the message | ||
411 | * | 398 | * |
412 | * Description: | 399 | * Description: |
413 | * Process a user generated MODULES message and respond accordingly. | 400 | * This function is to be used in conjunction with netlbl_mgmt_protocols() to |
401 | * answer a application's PROTOCOLS message. Returns the size of the message | ||
402 | * on success, negative values on failure. | ||
414 | * | 403 | * |
415 | */ | 404 | */ |
416 | static int netlbl_mgmt_modules(struct sk_buff *skb, struct genl_info *info) | 405 | static int netlbl_mgmt_protocols_cb(struct sk_buff *skb, |
406 | struct netlink_callback *cb, | ||
407 | u32 protocol) | ||
417 | { | 408 | { |
418 | int ret_val = -ENOMEM; | 409 | int ret_val = -ENOMEM; |
419 | size_t data_size; | 410 | void *data; |
420 | u32 mod_count; | 411 | |
421 | struct sk_buff *ans_skb = NULL; | 412 | data = netlbl_netlink_hdr_put(skb, |
422 | 413 | NETLINK_CB(cb->skb).pid, | |
423 | /* unlabeled + cipsov4 */ | 414 | cb->nlh->nlmsg_seq, |
424 | mod_count = 2; | 415 | netlbl_mgmt_gnl_family.id, |
425 | 416 | NLM_F_MULTI, | |
426 | data_size = GENL_HDRLEN + NETLBL_LEN_U32 + mod_count * NETLBL_LEN_U32; | 417 | NLBL_MGMT_C_PROTOCOLS); |
427 | ans_skb = netlbl_netlink_alloc_skb(0, data_size, GFP_KERNEL); | 418 | if (data == NULL) |
428 | if (ans_skb == NULL) | 419 | goto protocols_cb_failure; |
429 | goto modules_failure; | 420 | |
430 | 421 | ret_val = nla_put_u32(skb, NLBL_MGMT_A_PROTOCOL, protocol); | |
431 | if (netlbl_netlink_hdr_put(ans_skb, | ||
432 | info->snd_pid, | ||
433 | 0, | ||
434 | netlbl_mgmt_gnl_family.id, | ||
435 | NLBL_MGMT_C_MODULES) == NULL) | ||
436 | goto modules_failure; | ||
437 | |||
438 | ret_val = nla_put_u32(ans_skb, NLA_U32, mod_count); | ||
439 | if (ret_val != 0) | ||
440 | goto modules_failure; | ||
441 | ret_val = nla_put_u32(ans_skb, NLA_U32, NETLBL_NLTYPE_UNLABELED); | ||
442 | if (ret_val != 0) | 422 | if (ret_val != 0) |
443 | goto modules_failure; | 423 | goto protocols_cb_failure; |
444 | ret_val = nla_put_u32(ans_skb, NLA_U32, NETLBL_NLTYPE_CIPSOV4); | ||
445 | if (ret_val != 0) | ||
446 | goto modules_failure; | ||
447 | |||
448 | ret_val = netlbl_netlink_snd(ans_skb, info->snd_pid); | ||
449 | if (ret_val != 0) | ||
450 | goto modules_failure; | ||
451 | 424 | ||
452 | return 0; | 425 | return genlmsg_end(skb, data); |
453 | 426 | ||
454 | modules_failure: | 427 | protocols_cb_failure: |
455 | kfree_skb(ans_skb); | 428 | genlmsg_cancel(skb, data); |
456 | netlbl_netlink_send_ack(info, | ||
457 | netlbl_mgmt_gnl_family.id, | ||
458 | NLBL_MGMT_C_ACK, | ||
459 | -ret_val); | ||
460 | return ret_val; | 429 | return ret_val; |
461 | } | 430 | } |
462 | 431 | ||
463 | /** | 432 | /** |
433 | * netlbl_mgmt_protocols - Handle a PROTOCOLS message | ||
434 | * @skb: the NETLINK buffer | ||
435 | * @cb: the NETLINK callback | ||
436 | * | ||
437 | * Description: | ||
438 | * Process a user generated PROTOCOLS message and respond accordingly. | ||
439 | * | ||
440 | */ | ||
441 | static int netlbl_mgmt_protocols(struct sk_buff *skb, | ||
442 | struct netlink_callback *cb) | ||
443 | { | ||
444 | u32 protos_sent = cb->args[0]; | ||
445 | |||
446 | if (protos_sent == 0) { | ||
447 | if (netlbl_mgmt_protocols_cb(skb, | ||
448 | cb, | ||
449 | NETLBL_NLTYPE_UNLABELED) < 0) | ||
450 | goto protocols_return; | ||
451 | protos_sent++; | ||
452 | } | ||
453 | if (protos_sent == 1) { | ||
454 | if (netlbl_mgmt_protocols_cb(skb, | ||
455 | cb, | ||
456 | NETLBL_NLTYPE_CIPSOV4) < 0) | ||
457 | goto protocols_return; | ||
458 | protos_sent++; | ||
459 | } | ||
460 | |||
461 | protocols_return: | ||
462 | cb->args[0] = protos_sent; | ||
463 | return skb->len; | ||
464 | } | ||
465 | |||
466 | /** | ||
464 | * netlbl_mgmt_version - Handle a VERSION message | 467 | * netlbl_mgmt_version - Handle a VERSION message |
465 | * @skb: the NETLINK buffer | 468 | * @skb: the NETLINK buffer |
466 | * @info: the Generic NETLINK info block | 469 | * @info: the Generic NETLINK info block |
@@ -474,35 +477,35 @@ static int netlbl_mgmt_version(struct sk_buff *skb, struct genl_info *info) | |||
474 | { | 477 | { |
475 | int ret_val = -ENOMEM; | 478 | int ret_val = -ENOMEM; |
476 | struct sk_buff *ans_skb = NULL; | 479 | struct sk_buff *ans_skb = NULL; |
480 | void *data; | ||
477 | 481 | ||
478 | ans_skb = netlbl_netlink_alloc_skb(0, | 482 | ans_skb = nlmsg_new(NLMSG_GOODSIZE, GFP_KERNEL); |
479 | GENL_HDRLEN + NETLBL_LEN_U32, | ||
480 | GFP_KERNEL); | ||
481 | if (ans_skb == NULL) | 483 | if (ans_skb == NULL) |
482 | goto version_failure; | 484 | return -ENOMEM; |
483 | if (netlbl_netlink_hdr_put(ans_skb, | 485 | data = netlbl_netlink_hdr_put(ans_skb, |
484 | info->snd_pid, | 486 | info->snd_pid, |
485 | 0, | 487 | info->snd_seq, |
486 | netlbl_mgmt_gnl_family.id, | 488 | netlbl_mgmt_gnl_family.id, |
487 | NLBL_MGMT_C_VERSION) == NULL) | 489 | 0, |
490 | NLBL_MGMT_C_VERSION); | ||
491 | if (data == NULL) | ||
488 | goto version_failure; | 492 | goto version_failure; |
489 | 493 | ||
490 | ret_val = nla_put_u32(ans_skb, NLA_U32, NETLBL_PROTO_VERSION); | 494 | ret_val = nla_put_u32(ans_skb, |
495 | NLBL_MGMT_A_VERSION, | ||
496 | NETLBL_PROTO_VERSION); | ||
491 | if (ret_val != 0) | 497 | if (ret_val != 0) |
492 | goto version_failure; | 498 | goto version_failure; |
493 | 499 | ||
494 | ret_val = netlbl_netlink_snd(ans_skb, info->snd_pid); | 500 | genlmsg_end(ans_skb, data); |
501 | |||
502 | ret_val = genlmsg_unicast(ans_skb, info->snd_pid); | ||
495 | if (ret_val != 0) | 503 | if (ret_val != 0) |
496 | goto version_failure; | 504 | goto version_failure; |
497 | |||
498 | return 0; | 505 | return 0; |
499 | 506 | ||
500 | version_failure: | 507 | version_failure: |
501 | kfree_skb(ans_skb); | 508 | kfree_skb(ans_skb); |
502 | netlbl_netlink_send_ack(info, | ||
503 | netlbl_mgmt_gnl_family.id, | ||
504 | NLBL_MGMT_C_ACK, | ||
505 | -ret_val); | ||
506 | return ret_val; | 509 | return ret_val; |
507 | } | 510 | } |
508 | 511 | ||
@@ -513,35 +516,40 @@ version_failure: | |||
513 | 516 | ||
514 | static struct genl_ops netlbl_mgmt_genl_c_add = { | 517 | static struct genl_ops netlbl_mgmt_genl_c_add = { |
515 | .cmd = NLBL_MGMT_C_ADD, | 518 | .cmd = NLBL_MGMT_C_ADD, |
516 | .flags = 0, | 519 | .flags = GENL_ADMIN_PERM, |
520 | .policy = netlbl_mgmt_genl_policy, | ||
517 | .doit = netlbl_mgmt_add, | 521 | .doit = netlbl_mgmt_add, |
518 | .dumpit = NULL, | 522 | .dumpit = NULL, |
519 | }; | 523 | }; |
520 | 524 | ||
521 | static struct genl_ops netlbl_mgmt_genl_c_remove = { | 525 | static struct genl_ops netlbl_mgmt_genl_c_remove = { |
522 | .cmd = NLBL_MGMT_C_REMOVE, | 526 | .cmd = NLBL_MGMT_C_REMOVE, |
523 | .flags = 0, | 527 | .flags = GENL_ADMIN_PERM, |
528 | .policy = netlbl_mgmt_genl_policy, | ||
524 | .doit = netlbl_mgmt_remove, | 529 | .doit = netlbl_mgmt_remove, |
525 | .dumpit = NULL, | 530 | .dumpit = NULL, |
526 | }; | 531 | }; |
527 | 532 | ||
528 | static struct genl_ops netlbl_mgmt_genl_c_list = { | 533 | static struct genl_ops netlbl_mgmt_genl_c_listall = { |
529 | .cmd = NLBL_MGMT_C_LIST, | 534 | .cmd = NLBL_MGMT_C_LISTALL, |
530 | .flags = 0, | 535 | .flags = 0, |
531 | .doit = netlbl_mgmt_list, | 536 | .policy = netlbl_mgmt_genl_policy, |
532 | .dumpit = NULL, | 537 | .doit = NULL, |
538 | .dumpit = netlbl_mgmt_listall, | ||
533 | }; | 539 | }; |
534 | 540 | ||
535 | static struct genl_ops netlbl_mgmt_genl_c_adddef = { | 541 | static struct genl_ops netlbl_mgmt_genl_c_adddef = { |
536 | .cmd = NLBL_MGMT_C_ADDDEF, | 542 | .cmd = NLBL_MGMT_C_ADDDEF, |
537 | .flags = 0, | 543 | .flags = GENL_ADMIN_PERM, |
544 | .policy = netlbl_mgmt_genl_policy, | ||
538 | .doit = netlbl_mgmt_adddef, | 545 | .doit = netlbl_mgmt_adddef, |
539 | .dumpit = NULL, | 546 | .dumpit = NULL, |
540 | }; | 547 | }; |
541 | 548 | ||
542 | static struct genl_ops netlbl_mgmt_genl_c_removedef = { | 549 | static struct genl_ops netlbl_mgmt_genl_c_removedef = { |
543 | .cmd = NLBL_MGMT_C_REMOVEDEF, | 550 | .cmd = NLBL_MGMT_C_REMOVEDEF, |
544 | .flags = 0, | 551 | .flags = GENL_ADMIN_PERM, |
552 | .policy = netlbl_mgmt_genl_policy, | ||
545 | .doit = netlbl_mgmt_removedef, | 553 | .doit = netlbl_mgmt_removedef, |
546 | .dumpit = NULL, | 554 | .dumpit = NULL, |
547 | }; | 555 | }; |
@@ -549,20 +557,23 @@ static struct genl_ops netlbl_mgmt_genl_c_removedef = { | |||
549 | static struct genl_ops netlbl_mgmt_genl_c_listdef = { | 557 | static struct genl_ops netlbl_mgmt_genl_c_listdef = { |
550 | .cmd = NLBL_MGMT_C_LISTDEF, | 558 | .cmd = NLBL_MGMT_C_LISTDEF, |
551 | .flags = 0, | 559 | .flags = 0, |
560 | .policy = netlbl_mgmt_genl_policy, | ||
552 | .doit = netlbl_mgmt_listdef, | 561 | .doit = netlbl_mgmt_listdef, |
553 | .dumpit = NULL, | 562 | .dumpit = NULL, |
554 | }; | 563 | }; |
555 | 564 | ||
556 | static struct genl_ops netlbl_mgmt_genl_c_modules = { | 565 | static struct genl_ops netlbl_mgmt_genl_c_protocols = { |
557 | .cmd = NLBL_MGMT_C_MODULES, | 566 | .cmd = NLBL_MGMT_C_PROTOCOLS, |
558 | .flags = 0, | 567 | .flags = 0, |
559 | .doit = netlbl_mgmt_modules, | 568 | .policy = netlbl_mgmt_genl_policy, |
560 | .dumpit = NULL, | 569 | .doit = NULL, |
570 | .dumpit = netlbl_mgmt_protocols, | ||
561 | }; | 571 | }; |
562 | 572 | ||
563 | static struct genl_ops netlbl_mgmt_genl_c_version = { | 573 | static struct genl_ops netlbl_mgmt_genl_c_version = { |
564 | .cmd = NLBL_MGMT_C_VERSION, | 574 | .cmd = NLBL_MGMT_C_VERSION, |
565 | .flags = 0, | 575 | .flags = 0, |
576 | .policy = netlbl_mgmt_genl_policy, | ||
566 | .doit = netlbl_mgmt_version, | 577 | .doit = netlbl_mgmt_version, |
567 | .dumpit = NULL, | 578 | .dumpit = NULL, |
568 | }; | 579 | }; |
@@ -596,7 +607,7 @@ int netlbl_mgmt_genl_init(void) | |||
596 | if (ret_val != 0) | 607 | if (ret_val != 0) |
597 | return ret_val; | 608 | return ret_val; |
598 | ret_val = genl_register_ops(&netlbl_mgmt_gnl_family, | 609 | ret_val = genl_register_ops(&netlbl_mgmt_gnl_family, |
599 | &netlbl_mgmt_genl_c_list); | 610 | &netlbl_mgmt_genl_c_listall); |
600 | if (ret_val != 0) | 611 | if (ret_val != 0) |
601 | return ret_val; | 612 | return ret_val; |
602 | ret_val = genl_register_ops(&netlbl_mgmt_gnl_family, | 613 | ret_val = genl_register_ops(&netlbl_mgmt_gnl_family, |
@@ -612,7 +623,7 @@ int netlbl_mgmt_genl_init(void) | |||
612 | if (ret_val != 0) | 623 | if (ret_val != 0) |
613 | return ret_val; | 624 | return ret_val; |
614 | ret_val = genl_register_ops(&netlbl_mgmt_gnl_family, | 625 | ret_val = genl_register_ops(&netlbl_mgmt_gnl_family, |
615 | &netlbl_mgmt_genl_c_modules); | 626 | &netlbl_mgmt_genl_c_protocols); |
616 | if (ret_val != 0) | 627 | if (ret_val != 0) |
617 | return ret_val; | 628 | return ret_val; |
618 | ret_val = genl_register_ops(&netlbl_mgmt_gnl_family, | 629 | ret_val = genl_register_ops(&netlbl_mgmt_gnl_family, |