1 |
/* |
/* |
2 |
* security/ccsecurity/policy_io.c |
* security/ccsecurity/policy_io.c |
3 |
* |
* |
4 |
* Copyright (C) 2005-2009 NTT DATA CORPORATION |
* Copyright (C) 2005-2010 NTT DATA CORPORATION |
5 |
* |
* |
6 |
* Version: 1.7.0-pre 2009/08/08 |
* Version: 1.7.2 2010/04/01 |
7 |
* |
* |
8 |
* This file is applicable to both 2.4.30 and 2.6.11 and later. |
* This file is applicable to both 2.4.30 and 2.6.11 and later. |
9 |
* See README.ccs for ChangeLog. |
* See README.ccs for ChangeLog. |
12 |
|
|
13 |
#include "internal.h" |
#include "internal.h" |
14 |
|
|
15 |
/* Lock for protecting ccs_profile->comment */ |
static struct ccs_profile ccs_default_profile = { |
16 |
static DEFINE_SPINLOCK(ccs_profile_comment_lock); |
.learning = &ccs_default_profile.preference, |
17 |
|
.permissive = &ccs_default_profile.preference, |
18 |
|
.enforcing = &ccs_default_profile.preference, |
19 |
|
.audit = &ccs_default_profile.preference, |
20 |
|
#ifdef CONFIG_CCSECURITY_AUDIT |
21 |
|
.preference.audit_max_grant_log = CONFIG_CCSECURITY_MAX_GRANT_LOG, |
22 |
|
.preference.audit_max_reject_log = CONFIG_CCSECURITY_MAX_REJECT_LOG, |
23 |
|
#endif |
24 |
|
.preference.audit_task_info = true, |
25 |
|
.preference.audit_path_info = true, |
26 |
|
.preference.enforcing_penalty = 0, |
27 |
|
.preference.enforcing_verbose = true, |
28 |
|
.preference.learning_max_entry = CONFIG_CCSECURITY_MAX_ACCEPT_ENTRY, |
29 |
|
.preference.learning_verbose = false, |
30 |
|
.preference.learning_exec_realpath = true, |
31 |
|
.preference.learning_exec_argv0 = true, |
32 |
|
.preference.learning_symlink_target = true, |
33 |
|
.preference.permissive_verbose = true |
34 |
|
}; |
35 |
|
|
36 |
static bool ccs_profile_entry_used[CCS_MAX_CONTROL_INDEX + |
/* Profile version. Currently only 20090903 is defined. */ |
37 |
CCS_MAX_CAPABILITY_INDEX + 1]; |
static unsigned int ccs_profile_version; |
38 |
|
|
39 |
|
/* Profile table. Memory is allocated as needed. */ |
40 |
|
static struct ccs_profile *ccs_profile_ptr[CCS_MAX_PROFILES]; |
41 |
|
|
42 |
/* String table for functionality that takes 4 modes. */ |
/* String table for functionality that takes 4 modes. */ |
43 |
static const char *ccs_mode_4[4] = { |
static const char *ccs_mode_4[4] = { |
44 |
"disabled", "learning", "permissive", "enforcing" |
"disabled", "learning", "permissive", "enforcing" |
45 |
}; |
}; |
|
/* String table for functionality that takes 2 modes. */ |
|
|
static const char *ccs_mode_2[4] = { |
|
|
"disabled", "enabled", "enabled", "enabled" |
|
|
}; |
|
46 |
|
|
47 |
/* Table for profile. */ |
/* String table for /proc/ccs/profile */ |
48 |
static struct { |
static const char *ccs_mac_keywords[CCS_MAX_MAC_INDEX + |
49 |
const char *keyword; |
CCS_MAX_CAPABILITY_INDEX + |
50 |
unsigned int current_value; |
CCS_MAX_MAC_CATEGORY_INDEX] = { |
51 |
const unsigned int max_value; |
[CCS_MAC_FILE_EXECUTE] |
52 |
} ccs_control_array[CCS_MAX_CONTROL_INDEX] = { |
= "file::execute", |
53 |
[CCS_MAC_FOR_FILE] = { "MAC_FOR_FILE", 0, 3 }, |
[CCS_MAC_FILE_OPEN] |
54 |
[CCS_AUTOLEARN_EXEC_REALPATH] = { "AUTOLEARN_EXEC_REALPATH", 0, 1 }, |
= "file::open", |
55 |
[CCS_AUTOLEARN_EXEC_ARGV0] = { "AUTOLEARN_EXEC_ARGV0", 0, 1 }, |
[CCS_MAC_FILE_CREATE] |
56 |
[CCS_MAC_FOR_IOCTL] = { "MAC_FOR_IOCTL", 0, 3 }, |
= "file::create", |
57 |
[CCS_MAC_FOR_FILEATTR] = { "MAC_FOR_FILEATTR", 0, 3 }, |
[CCS_MAC_FILE_UNLINK] |
58 |
[CCS_MAC_FOR_ENV] = { "MAC_FOR_ENV", 0, 3 }, |
= "file::unlink", |
59 |
[CCS_MAC_FOR_NETWORK] = { "MAC_FOR_NETWORK", 0, 3 }, |
[CCS_MAC_FILE_MKDIR] |
60 |
[CCS_MAC_FOR_SIGNAL] = { "MAC_FOR_SIGNAL", 0, 3 }, |
= "file::mkdir", |
61 |
[CCS_MAC_FOR_NAMESPACE] = { "MAC_FOR_NAMESPACE", 0, 3 }, |
[CCS_MAC_FILE_RMDIR] |
62 |
[CCS_RESTRICT_AUTOBIND] = { "RESTRICT_AUTOBIND", 0, 1 }, |
= "file::rmdir", |
63 |
[CCS_MAX_ACCEPT_ENTRY] |
[CCS_MAC_FILE_MKFIFO] |
64 |
= { "MAX_ACCEPT_ENTRY", CONFIG_CCSECURITY_MAX_ACCEPT_ENTRY, INT_MAX }, |
= "file::mkfifo", |
65 |
#ifdef CONFIG_CCSECURITY_AUDIT |
[CCS_MAC_FILE_MKSOCK] |
66 |
[CCS_MAX_GRANT_LOG] |
= "file::mksock", |
67 |
= { "MAX_GRANT_LOG", CONFIG_CCSECURITY_MAX_GRANT_LOG, INT_MAX }, |
[CCS_MAC_FILE_TRUNCATE] |
68 |
[CCS_MAX_REJECT_LOG] |
= "file::truncate", |
69 |
= { "MAX_REJECT_LOG", CONFIG_CCSECURITY_MAX_REJECT_LOG, INT_MAX }, |
[CCS_MAC_FILE_SYMLINK] |
70 |
#endif |
= "file::symlink", |
71 |
[CCS_VERBOSE] = { "TOMOYO_VERBOSE", 1, 1 }, |
[CCS_MAC_FILE_REWRITE] |
72 |
[CCS_SLEEP_PERIOD] |
= "file::rewrite", |
73 |
= { "SLEEP_PERIOD", 0, 3000 }, /* in 0.1 second */ |
[CCS_MAC_FILE_MKBLOCK] |
74 |
|
= "file::mkblock", |
75 |
|
[CCS_MAC_FILE_MKCHAR] |
76 |
|
= "file::mkchar", |
77 |
|
[CCS_MAC_FILE_LINK] |
78 |
|
= "file::link", |
79 |
|
[CCS_MAC_FILE_RENAME] |
80 |
|
= "file::rename", |
81 |
|
[CCS_MAC_FILE_CHMOD] |
82 |
|
= "file::chmod", |
83 |
|
[CCS_MAC_FILE_CHOWN] |
84 |
|
= "file::chown", |
85 |
|
[CCS_MAC_FILE_CHGRP] |
86 |
|
= "file::chgrp", |
87 |
|
[CCS_MAC_FILE_IOCTL] |
88 |
|
= "file::ioctl", |
89 |
|
[CCS_MAC_FILE_CHROOT] |
90 |
|
= "file::chroot", |
91 |
|
[CCS_MAC_FILE_MOUNT] |
92 |
|
= "file::mount", |
93 |
|
[CCS_MAC_FILE_UMOUNT] |
94 |
|
= "file::umount", |
95 |
|
[CCS_MAC_FILE_PIVOT_ROOT] |
96 |
|
= "file::pivot_root", |
97 |
|
[CCS_MAC_FILE_TRANSIT] |
98 |
|
= "file::transit", |
99 |
|
[CCS_MAC_ENVIRON] |
100 |
|
= "misc::env", |
101 |
|
[CCS_MAC_NETWORK_UDP_BIND] |
102 |
|
= "network::inet_udp_bind", |
103 |
|
[CCS_MAC_NETWORK_UDP_CONNECT] |
104 |
|
= "network::inet_udp_connect", |
105 |
|
[CCS_MAC_NETWORK_TCP_BIND] |
106 |
|
= "network::inet_tcp_bind", |
107 |
|
[CCS_MAC_NETWORK_TCP_LISTEN] |
108 |
|
= "network::inet_tcp_listen", |
109 |
|
[CCS_MAC_NETWORK_TCP_CONNECT] |
110 |
|
= "network::inet_tcp_connect", |
111 |
|
[CCS_MAC_NETWORK_TCP_ACCEPT] |
112 |
|
= "network::inet_tcp_accept", |
113 |
|
[CCS_MAC_NETWORK_RAW_BIND] |
114 |
|
= "network::inet_raw_bind", |
115 |
|
[CCS_MAC_NETWORK_RAW_CONNECT] |
116 |
|
= "network::inet_raw_connect", |
117 |
|
[CCS_MAC_SIGNAL] |
118 |
|
= "ipc::signal", |
119 |
|
[CCS_MAX_MAC_INDEX + CCS_INET_STREAM_SOCKET_CREATE] |
120 |
|
= "capability::inet_tcp_create", |
121 |
|
[CCS_MAX_MAC_INDEX + CCS_INET_STREAM_SOCKET_LISTEN] |
122 |
|
= "capability::inet_tcp_listen", |
123 |
|
[CCS_MAX_MAC_INDEX + CCS_INET_STREAM_SOCKET_CONNECT] |
124 |
|
= "capability::inet_tcp_connect", |
125 |
|
[CCS_MAX_MAC_INDEX + CCS_USE_INET_DGRAM_SOCKET] |
126 |
|
= "capability::use_inet_udp", |
127 |
|
[CCS_MAX_MAC_INDEX + CCS_USE_INET_RAW_SOCKET] |
128 |
|
= "capability::use_inet_ip", |
129 |
|
[CCS_MAX_MAC_INDEX + CCS_USE_ROUTE_SOCKET] |
130 |
|
= "capability::use_route", |
131 |
|
[CCS_MAX_MAC_INDEX + CCS_USE_PACKET_SOCKET] |
132 |
|
= "capability::use_packet", |
133 |
|
[CCS_MAX_MAC_INDEX + CCS_SYS_MOUNT] |
134 |
|
= "capability::SYS_MOUNT", |
135 |
|
[CCS_MAX_MAC_INDEX + CCS_SYS_UMOUNT] |
136 |
|
= "capability::SYS_UMOUNT", |
137 |
|
[CCS_MAX_MAC_INDEX + CCS_SYS_REBOOT] |
138 |
|
= "capability::SYS_REBOOT", |
139 |
|
[CCS_MAX_MAC_INDEX + CCS_SYS_CHROOT] |
140 |
|
= "capability::SYS_CHROOT", |
141 |
|
[CCS_MAX_MAC_INDEX + CCS_SYS_KILL] |
142 |
|
= "capability::SYS_KILL", |
143 |
|
[CCS_MAX_MAC_INDEX + CCS_SYS_VHANGUP] |
144 |
|
= "capability::SYS_VHANGUP", |
145 |
|
[CCS_MAX_MAC_INDEX + CCS_SYS_SETTIME] |
146 |
|
= "capability::SYS_TIME", |
147 |
|
[CCS_MAX_MAC_INDEX + CCS_SYS_NICE] |
148 |
|
= "capability::SYS_NICE", |
149 |
|
[CCS_MAX_MAC_INDEX + CCS_SYS_SETHOSTNAME] |
150 |
|
= "capability::SYS_SETHOSTNAME", |
151 |
|
[CCS_MAX_MAC_INDEX + CCS_USE_KERNEL_MODULE] |
152 |
|
= "capability::use_kernel_module", |
153 |
|
[CCS_MAX_MAC_INDEX + CCS_CREATE_FIFO] |
154 |
|
= "capability::create_fifo", |
155 |
|
[CCS_MAX_MAC_INDEX + CCS_CREATE_BLOCK_DEV] |
156 |
|
= "capability::create_block_dev", |
157 |
|
[CCS_MAX_MAC_INDEX + CCS_CREATE_CHAR_DEV] |
158 |
|
= "capability::create_char_dev", |
159 |
|
[CCS_MAX_MAC_INDEX + CCS_CREATE_UNIX_SOCKET] |
160 |
|
= "capability::create_unix_socket", |
161 |
|
[CCS_MAX_MAC_INDEX + CCS_SYS_LINK] |
162 |
|
= "capability::SYS_LINK", |
163 |
|
[CCS_MAX_MAC_INDEX + CCS_SYS_SYMLINK] |
164 |
|
= "capability::SYS_SYMLINK", |
165 |
|
[CCS_MAX_MAC_INDEX + CCS_SYS_RENAME] |
166 |
|
= "capability::SYS_RENAME", |
167 |
|
[CCS_MAX_MAC_INDEX + CCS_SYS_UNLINK] |
168 |
|
= "capability::SYS_UNLINK", |
169 |
|
[CCS_MAX_MAC_INDEX + CCS_SYS_CHMOD] |
170 |
|
= "capability::SYS_CHMOD", |
171 |
|
[CCS_MAX_MAC_INDEX + CCS_SYS_CHOWN] |
172 |
|
= "capability::SYS_CHOWN", |
173 |
|
[CCS_MAX_MAC_INDEX + CCS_SYS_IOCTL] |
174 |
|
= "capability::SYS_IOCTL", |
175 |
|
[CCS_MAX_MAC_INDEX + CCS_SYS_KEXEC_LOAD] |
176 |
|
= "capability::SYS_KEXEC_LOAD", |
177 |
|
[CCS_MAX_MAC_INDEX + CCS_SYS_PIVOT_ROOT] |
178 |
|
= "capability::SYS_PIVOT_ROOT", |
179 |
|
[CCS_MAX_MAC_INDEX + CCS_SYS_PTRACE] |
180 |
|
= "capability::SYS_PTRACE", |
181 |
|
[CCS_MAX_MAC_INDEX + CCS_CONCEAL_MOUNT] |
182 |
|
= "capability::conceal_mount", |
183 |
|
[CCS_MAX_MAC_INDEX + CCS_MAX_CAPABILITY_INDEX |
184 |
|
+ CCS_MAC_CATEGORY_FILE] = "file", |
185 |
|
[CCS_MAX_MAC_INDEX + CCS_MAX_CAPABILITY_INDEX |
186 |
|
+ CCS_MAC_CATEGORY_NETWORK] = "network", |
187 |
|
[CCS_MAX_MAC_INDEX + CCS_MAX_CAPABILITY_INDEX |
188 |
|
+ CCS_MAC_CATEGORY_MISC] = "misc", |
189 |
|
[CCS_MAX_MAC_INDEX + CCS_MAX_CAPABILITY_INDEX |
190 |
|
+ CCS_MAC_CATEGORY_IPC] = "ipc", |
191 |
|
[CCS_MAX_MAC_INDEX + CCS_MAX_CAPABILITY_INDEX |
192 |
|
+ CCS_MAC_CATEGORY_CAPABILITY] = "capability", |
193 |
}; |
}; |
194 |
|
|
195 |
/* Permit policy management by non-root user? */ |
/* Permit policy management by non-root user? */ |
196 |
static bool ccs_manage_by_non_root; |
static bool ccs_manage_by_non_root; |
197 |
|
|
198 |
/** |
/** |
199 |
* ccs_quiet_setup - Set CCS_VERBOSE=0 by default. |
* ccs_cap2keyword - Convert capability operation to capability name. |
200 |
* |
* |
201 |
* @str: Unused. |
* @operation: The capability index. |
202 |
* |
* |
203 |
* Returns 0. |
* Returns the name of the specified capability's name. |
204 |
*/ |
*/ |
205 |
static int __init ccs_quiet_setup(char *str) |
const char *ccs_cap2keyword(const u8 operation) |
206 |
{ |
{ |
207 |
ccs_control_array[CCS_VERBOSE].current_value = 0; |
return operation < CCS_MAX_CAPABILITY_INDEX |
208 |
return 0; |
? ccs_mac_keywords[CCS_MAX_MAC_INDEX + operation] + 12 : NULL; |
209 |
} |
} |
210 |
|
|
211 |
__setup("CCS_QUIET", ccs_quiet_setup); |
/** |
212 |
|
* ccs_yesno - Return "yes" or "no". |
213 |
|
* |
214 |
|
* @value: Bool value. |
215 |
|
*/ |
216 |
|
static const char *ccs_yesno(const unsigned int value) |
217 |
|
{ |
218 |
|
return value ? "yes" : "no"; |
219 |
|
} |
220 |
|
|
221 |
/** |
/** |
222 |
* ccs_io_printf - Transactional printf() to "struct ccs_io_buffer" structure. |
* ccs_io_printf - Transactional printf() to "struct ccs_io_buffer" structure. |
246 |
} |
} |
247 |
|
|
248 |
/** |
/** |
249 |
* ccs_find_or_assign_new_profile - Create a new profile. |
* ccs_assign_profile - Create a new profile. |
250 |
* |
* |
251 |
* @profile: Profile number to create. |
* @profile: Profile number to create. |
252 |
* |
* |
253 |
* Returns pointer to "struct ccs_profile" on success, NULL otherwise. |
* Returns pointer to "struct ccs_profile" on success, NULL otherwise. |
254 |
*/ |
*/ |
255 |
static struct ccs_profile *ccs_find_or_assign_new_profile(const unsigned int |
static struct ccs_profile *ccs_assign_profile(const unsigned int profile) |
|
profile) |
|
256 |
{ |
{ |
257 |
struct ccs_profile *ptr; |
struct ccs_profile *ptr; |
258 |
struct ccs_profile *entry; |
struct ccs_profile *entry; |
|
int i; |
|
259 |
if (profile >= CCS_MAX_PROFILES) |
if (profile >= CCS_MAX_PROFILES) |
260 |
return NULL; |
return NULL; |
261 |
ptr = ccs_profile_ptr[profile]; |
ptr = ccs_profile_ptr[profile]; |
262 |
if (ptr) |
if (ptr) |
263 |
return ptr; |
return ptr; |
264 |
entry = kzalloc(sizeof(*entry), GFP_KERNEL); |
entry = kzalloc(sizeof(*entry), CCS_GFP_FLAGS); |
265 |
mutex_lock(&ccs_policy_lock); |
if (mutex_lock_interruptible(&ccs_policy_lock)) |
266 |
|
goto out; |
267 |
ptr = ccs_profile_ptr[profile]; |
ptr = ccs_profile_ptr[profile]; |
268 |
if (!ptr && ccs_memory_ok(entry, sizeof(*entry))) { |
if (!ptr && ccs_memory_ok(entry, sizeof(*entry))) { |
269 |
ptr = entry; |
ptr = entry; |
270 |
for (i = 0; i < CCS_MAX_CONTROL_INDEX; i++) |
ptr->audit = &ccs_default_profile.preference; |
271 |
ptr->value[i] = ccs_control_array[i].current_value; |
ptr->learning = &ccs_default_profile.preference; |
272 |
/* |
ptr->permissive = &ccs_default_profile.preference; |
273 |
* Needn't to initialize "ptr->capability_value" |
ptr->enforcing = &ccs_default_profile.preference; |
274 |
* because they are always 0. |
ptr->default_config = CCS_CONFIG_DISABLED | |
275 |
*/ |
CCS_CONFIG_WANT_GRANT_LOG | CCS_CONFIG_WANT_REJECT_LOG; |
276 |
|
memset(ptr->config, CCS_CONFIG_USE_DEFAULT, |
277 |
|
sizeof(ptr->config)); |
278 |
mb(); /* Avoid out-of-order execution. */ |
mb(); /* Avoid out-of-order execution. */ |
279 |
ccs_profile_ptr[profile] = ptr; |
ccs_profile_ptr[profile] = ptr; |
280 |
entry = NULL; |
entry = NULL; |
281 |
} |
} |
282 |
mutex_unlock(&ccs_policy_lock); |
mutex_unlock(&ccs_policy_lock); |
283 |
|
out: |
284 |
kfree(entry); |
kfree(entry); |
285 |
return ptr; |
return ptr; |
286 |
} |
} |
287 |
|
|
288 |
/** |
/** |
289 |
|
* ccs_check_profile - Check all profiles currently assigned to domains are defined. |
290 |
|
*/ |
291 |
|
static void ccs_check_profile(void) |
292 |
|
{ |
293 |
|
struct ccs_domain_info *domain; |
294 |
|
const int idx = ccs_read_lock(); |
295 |
|
ccs_policy_loaded = true; |
296 |
|
list_for_each_entry_rcu(domain, &ccs_domain_list, list) { |
297 |
|
const u8 profile = domain->profile; |
298 |
|
if (ccs_profile_ptr[profile]) |
299 |
|
continue; |
300 |
|
panic("Profile %u (used by '%s') not defined.\n", |
301 |
|
profile, domain->domainname->name); |
302 |
|
} |
303 |
|
ccs_read_unlock(idx); |
304 |
|
if (ccs_profile_version != 20090903) |
305 |
|
panic("Profile version %u is not supported.\n", |
306 |
|
ccs_profile_version); |
307 |
|
printk(KERN_INFO "CCSecurity: 1.7.2 2010/04/01\n"); |
308 |
|
printk(KERN_INFO "Mandatory Access Control activated.\n"); |
309 |
|
} |
310 |
|
|
311 |
|
/** |
312 |
|
* ccs_profile - Find a profile. |
313 |
|
* |
314 |
|
* @profile: Profile number to find. |
315 |
|
* |
316 |
|
* Returns pointer to "struct ccs_profile". |
317 |
|
*/ |
318 |
|
struct ccs_profile *ccs_profile(const u8 profile) |
319 |
|
{ |
320 |
|
struct ccs_profile *ptr = ccs_profile_ptr[profile]; |
321 |
|
if (!ccs_policy_loaded) |
322 |
|
return &ccs_default_profile; |
323 |
|
BUG_ON(!ptr); |
324 |
|
return ptr; |
325 |
|
} |
326 |
|
|
327 |
|
/** |
328 |
* ccs_write_profile - Write profile table. |
* ccs_write_profile - Write profile table. |
329 |
* |
* |
330 |
* @head: Pointer to "struct ccs_io_buffer". |
* @head: Pointer to "struct ccs_io_buffer". |
335 |
{ |
{ |
336 |
char *data = head->write_buf; |
char *data = head->write_buf; |
337 |
unsigned int i; |
unsigned int i; |
338 |
unsigned int value; |
int value; |
339 |
|
int mode; |
340 |
|
u8 config; |
341 |
|
bool use_default = false; |
342 |
char *cp; |
char *cp; |
343 |
struct ccs_profile *ccs_profile; |
struct ccs_profile *profile; |
344 |
|
if (sscanf(data, "PROFILE_VERSION=%u", &ccs_profile_version) == 1) |
345 |
|
return 0; |
346 |
i = simple_strtoul(data, &cp, 10); |
i = simple_strtoul(data, &cp, 10); |
347 |
if (data != cp) { |
if (data == cp) { |
348 |
|
profile = &ccs_default_profile; |
349 |
|
} else { |
350 |
if (*cp != '-') |
if (*cp != '-') |
351 |
return -EINVAL; |
return -EINVAL; |
352 |
data = cp + 1; |
data = cp + 1; |
353 |
|
profile = ccs_assign_profile(i); |
354 |
|
if (!profile) |
355 |
|
return -EINVAL; |
356 |
} |
} |
|
ccs_profile = ccs_find_or_assign_new_profile(i); |
|
|
if (!ccs_profile) |
|
|
return -EINVAL; |
|
357 |
cp = strchr(data, '='); |
cp = strchr(data, '='); |
358 |
if (!cp) |
if (!cp) |
359 |
return -EINVAL; |
return -EINVAL; |
360 |
*cp = '\0'; |
*cp++ = '\0'; |
361 |
|
if (profile != &ccs_default_profile) |
362 |
|
use_default = strstr(cp, "use_default") != NULL; |
363 |
|
if (strstr(cp, "verbose=yes")) |
364 |
|
value = 1; |
365 |
|
else if (strstr(cp, "verbose=no")) |
366 |
|
value = 0; |
367 |
|
else |
368 |
|
value = -1; |
369 |
|
if (!strcmp(data, CCS_KEYWORD_PREFERENCE_AUDIT)) { |
370 |
|
#ifdef CONFIG_CCSECURITY_AUDIT |
371 |
|
char *cp2; |
372 |
|
#endif |
373 |
|
if (use_default) { |
374 |
|
profile->audit = &ccs_default_profile.preference; |
375 |
|
return 0; |
376 |
|
} |
377 |
|
profile->audit = &profile->preference; |
378 |
|
#ifdef CONFIG_CCSECURITY_AUDIT |
379 |
|
cp2 = strstr(cp, "max_grant_log="); |
380 |
|
if (cp2) |
381 |
|
sscanf(cp2 + 14, "%u", |
382 |
|
&profile->preference.audit_max_grant_log); |
383 |
|
cp2 = strstr(cp, "max_reject_log="); |
384 |
|
if (cp2) |
385 |
|
sscanf(cp2 + 15, "%u", |
386 |
|
&profile->preference.audit_max_reject_log); |
387 |
|
#endif |
388 |
|
if (strstr(cp, "task_info=yes")) |
389 |
|
profile->preference.audit_task_info = true; |
390 |
|
else if (strstr(cp, "task_info=no")) |
391 |
|
profile->preference.audit_task_info = false; |
392 |
|
if (strstr(cp, "path_info=yes")) |
393 |
|
profile->preference.audit_path_info = true; |
394 |
|
else if (strstr(cp, "path_info=no")) |
395 |
|
profile->preference.audit_path_info = false; |
396 |
|
return 0; |
397 |
|
} |
398 |
|
if (!strcmp(data, CCS_KEYWORD_PREFERENCE_ENFORCING)) { |
399 |
|
char *cp2; |
400 |
|
if (use_default) { |
401 |
|
profile->enforcing = &ccs_default_profile.preference; |
402 |
|
return 0; |
403 |
|
} |
404 |
|
profile->enforcing = &profile->preference; |
405 |
|
if (value >= 0) |
406 |
|
profile->preference.enforcing_verbose = value; |
407 |
|
cp2 = strstr(cp, "penalty="); |
408 |
|
if (cp2) |
409 |
|
sscanf(cp2 + 8, "%u", |
410 |
|
&profile->preference.enforcing_penalty); |
411 |
|
return 0; |
412 |
|
} |
413 |
|
if (!strcmp(data, CCS_KEYWORD_PREFERENCE_PERMISSIVE)) { |
414 |
|
if (use_default) { |
415 |
|
profile->permissive = &ccs_default_profile.preference; |
416 |
|
return 0; |
417 |
|
} |
418 |
|
profile->permissive = &profile->preference; |
419 |
|
if (value >= 0) |
420 |
|
profile->preference.permissive_verbose = value; |
421 |
|
return 0; |
422 |
|
} |
423 |
|
if (!strcmp(data, CCS_KEYWORD_PREFERENCE_LEARNING)) { |
424 |
|
char *cp2; |
425 |
|
if (use_default) { |
426 |
|
profile->learning = &ccs_default_profile.preference; |
427 |
|
return 0; |
428 |
|
} |
429 |
|
profile->learning = &profile->preference; |
430 |
|
if (value >= 0) |
431 |
|
profile->preference.learning_verbose = value; |
432 |
|
cp2 = strstr(cp, "max_entry="); |
433 |
|
if (cp2) |
434 |
|
sscanf(cp2 + 10, "%u", |
435 |
|
&profile->preference.learning_max_entry); |
436 |
|
if (strstr(cp, "exec.realpath=yes")) |
437 |
|
profile->preference.learning_exec_realpath = true; |
438 |
|
else if (strstr(cp, "exec.realpath=no")) |
439 |
|
profile->preference.learning_exec_realpath = false; |
440 |
|
if (strstr(cp, "exec.argv0=yes")) |
441 |
|
profile->preference.learning_exec_argv0 = true; |
442 |
|
else if (strstr(cp, "exec.argv0=no")) |
443 |
|
profile->preference.learning_exec_argv0 = false; |
444 |
|
if (strstr(cp, "symlink.target=yes")) |
445 |
|
profile->preference.learning_symlink_target = true; |
446 |
|
else if (strstr(cp, "symlink.target=no")) |
447 |
|
profile->preference.learning_symlink_target = false; |
448 |
|
return 0; |
449 |
|
} |
450 |
|
if (profile == &ccs_default_profile) |
451 |
|
return -EINVAL; |
452 |
if (!strcmp(data, "COMMENT")) { |
if (!strcmp(data, "COMMENT")) { |
453 |
const struct ccs_path_info *new_comment |
const struct ccs_path_info *old_comment = profile->comment; |
454 |
= ccs_get_name(cp + 1); |
profile->comment = ccs_get_name(cp); |
|
const struct ccs_path_info *old_comment; |
|
|
/* Protect reader from ccs_put_name(). */ |
|
|
/***** CRITICAL SECTION START *****/ |
|
|
spin_lock(&ccs_profile_comment_lock); |
|
|
old_comment = ccs_profile->comment; |
|
|
ccs_profile->comment = new_comment; |
|
|
spin_unlock(&ccs_profile_comment_lock); |
|
|
/***** CRITICAL SECTION END *****/ |
|
455 |
ccs_put_name(old_comment); |
ccs_put_name(old_comment); |
|
ccs_profile_entry_used[0] = true; |
|
456 |
return 0; |
return 0; |
457 |
} |
} |
458 |
if (ccs_str_starts(&data, CCS_KEYWORD_MAC_FOR_CAPABILITY)) { |
if (!strcmp(data, "CONFIG")) { |
459 |
if (sscanf(cp + 1, "%u", &value) != 1) { |
i = CCS_MAX_MAC_INDEX + CCS_MAX_CAPABILITY_INDEX |
460 |
for (i = 0; i < 4; i++) { |
+ CCS_MAX_MAC_CATEGORY_INDEX; |
461 |
if (strcmp(cp + 1, ccs_mode_4[i])) |
config = profile->default_config; |
462 |
continue; |
} else if (ccs_str_starts(&data, "CONFIG::")) { |
463 |
value = i; |
config = 0; |
464 |
break; |
for (i = 0; i < CCS_MAX_MAC_INDEX + CCS_MAX_CAPABILITY_INDEX |
465 |
} |
+ CCS_MAX_MAC_CATEGORY_INDEX; i++) { |
466 |
if (i == 4) |
if (strcmp(data, ccs_mac_keywords[i])) |
|
return -EINVAL; |
|
|
} |
|
|
if (value > 3) |
|
|
value = 3; |
|
|
for (i = 0; i < CCS_MAX_CAPABILITY_INDEX; i++) { |
|
|
if (strcmp(data, ccs_capability_control_keyword[i])) |
|
467 |
continue; |
continue; |
468 |
ccs_profile->capability_value[i] = value; |
config = profile->config[i]; |
469 |
ccs_profile_entry_used[i + 1 + CCS_MAX_CONTROL_INDEX] |
break; |
|
= true; |
|
|
return 0; |
|
470 |
} |
} |
471 |
|
if (i == CCS_MAX_MAC_INDEX + CCS_MAX_CAPABILITY_INDEX |
472 |
|
+ CCS_MAX_MAC_CATEGORY_INDEX) |
473 |
|
return -EINVAL; |
474 |
|
} else { |
475 |
return -EINVAL; |
return -EINVAL; |
476 |
} |
} |
477 |
for (i = 0; i < CCS_MAX_CONTROL_INDEX; i++) { |
if (use_default) { |
478 |
if (strcmp(data, ccs_control_array[i].keyword)) |
config = CCS_CONFIG_USE_DEFAULT; |
479 |
continue; |
} else { |
480 |
if (sscanf(cp + 1, "%u", &value) != 1) { |
for (mode = 3; mode >= 0; mode--) |
481 |
int j; |
if (strstr(cp, ccs_mode_4[mode])) |
482 |
const char **modes; |
/* |
483 |
switch (i) { |
* Update lower 3 bits in order to distinguish |
484 |
case CCS_AUTOLEARN_EXEC_REALPATH: |
* 'config' from 'CCS_CONFIG_USE_DEAFULT'. |
485 |
case CCS_AUTOLEARN_EXEC_ARGV0: |
*/ |
486 |
case CCS_RESTRICT_AUTOBIND: |
config = (config & ~7) | mode; |
487 |
case CCS_VERBOSE: |
#ifdef CONFIG_CCSECURITY_AUDIT |
488 |
modes = ccs_mode_2; |
if (config != CCS_CONFIG_USE_DEFAULT) { |
489 |
break; |
if (strstr(cp, "grant_log=yes")) |
490 |
default: |
config |= CCS_CONFIG_WANT_GRANT_LOG; |
491 |
modes = ccs_mode_4; |
else if (strstr(cp, "grant_log=no")) |
492 |
break; |
config &= ~CCS_CONFIG_WANT_GRANT_LOG; |
493 |
} |
if (strstr(cp, "reject_log=yes")) |
494 |
for (j = 0; j < 4; j++) { |
config |= CCS_CONFIG_WANT_REJECT_LOG; |
495 |
if (strcmp(cp + 1, modes[j])) |
else if (strstr(cp, "reject_log=no")) |
496 |
continue; |
config &= ~CCS_CONFIG_WANT_REJECT_LOG; |
|
value = j; |
|
|
break; |
|
|
} |
|
|
if (j == 4) |
|
|
return -EINVAL; |
|
|
} else if (value > ccs_control_array[i].max_value) { |
|
|
value = ccs_control_array[i].max_value; |
|
497 |
} |
} |
498 |
ccs_profile->value[i] = value; |
#endif |
|
ccs_profile_entry_used[i + 1] = true; |
|
|
return 0; |
|
499 |
} |
} |
500 |
return -EINVAL; |
if (i < CCS_MAX_MAC_INDEX + CCS_MAX_CAPABILITY_INDEX |
501 |
|
+ CCS_MAX_MAC_CATEGORY_INDEX) |
502 |
|
profile->config[i] = config; |
503 |
|
else if (config != CCS_CONFIG_USE_DEFAULT) |
504 |
|
profile->default_config = config; |
505 |
|
return 0; |
506 |
|
} |
507 |
|
|
508 |
|
static bool ccs_print_preference(struct ccs_io_buffer *head, const int idx) |
509 |
|
{ |
510 |
|
struct ccs_preference *pref = &ccs_default_profile.preference; |
511 |
|
const struct ccs_profile *profile = idx >= 0 ? |
512 |
|
ccs_profile_ptr[idx] : NULL; |
513 |
|
char buffer[16] = ""; |
514 |
|
if (profile) { |
515 |
|
buffer[sizeof(buffer) - 1] = '\0'; |
516 |
|
snprintf(buffer, sizeof(buffer) - 1, "%u-", idx); |
517 |
|
} |
518 |
|
if (profile) { |
519 |
|
pref = profile->audit; |
520 |
|
if (pref == &ccs_default_profile.preference) |
521 |
|
pref = NULL; |
522 |
|
} |
523 |
|
if (pref && !ccs_io_printf(head, "%s%s={ " |
524 |
|
#ifdef CONFIG_CCSECURITY_AUDIT |
525 |
|
"max_grant_log=%u max_reject_log=%u " |
526 |
|
#endif |
527 |
|
"task_info=%s path_info=%s }\n", buffer, |
528 |
|
CCS_KEYWORD_PREFERENCE_AUDIT, |
529 |
|
#ifdef CONFIG_CCSECURITY_AUDIT |
530 |
|
pref->audit_max_grant_log, |
531 |
|
pref->audit_max_reject_log, |
532 |
|
#endif |
533 |
|
ccs_yesno(pref->audit_task_info), |
534 |
|
ccs_yesno(pref->audit_path_info))) |
535 |
|
return false; |
536 |
|
if (profile) { |
537 |
|
pref = profile->learning; |
538 |
|
if (pref == &ccs_default_profile.preference) |
539 |
|
pref = NULL; |
540 |
|
} |
541 |
|
if (pref && !ccs_io_printf(head, "%s%s={ " |
542 |
|
"verbose=%s max_entry=%u exec.realpath=%s " |
543 |
|
"exec.argv0=%s symlink.target=%s }\n", |
544 |
|
buffer, CCS_KEYWORD_PREFERENCE_LEARNING, |
545 |
|
ccs_yesno(pref->learning_verbose), |
546 |
|
pref->learning_max_entry, |
547 |
|
ccs_yesno(pref->learning_exec_realpath), |
548 |
|
ccs_yesno(pref->learning_exec_argv0), |
549 |
|
ccs_yesno(pref->learning_symlink_target))) |
550 |
|
return false; |
551 |
|
if (profile) { |
552 |
|
pref = profile->permissive; |
553 |
|
if (pref == &ccs_default_profile.preference) |
554 |
|
pref = NULL; |
555 |
|
} |
556 |
|
if (pref && !ccs_io_printf(head, "%s%s={ verbose=%s }\n", buffer, |
557 |
|
CCS_KEYWORD_PREFERENCE_PERMISSIVE, |
558 |
|
ccs_yesno(pref->permissive_verbose))) |
559 |
|
return false; |
560 |
|
if (profile) { |
561 |
|
pref = profile->enforcing; |
562 |
|
if (pref == &ccs_default_profile.preference) |
563 |
|
pref = NULL; |
564 |
|
} |
565 |
|
return !pref || ccs_io_printf(head, "%s%s={ verbose=%s penalty=%u }\n", |
566 |
|
buffer, CCS_KEYWORD_PREFERENCE_ENFORCING, |
567 |
|
ccs_yesno(pref->enforcing_verbose), |
568 |
|
pref->enforcing_penalty); |
569 |
} |
} |
570 |
|
|
571 |
/** |
/** |
572 |
* ccs_read_profile - Read profile table. |
* ccs_read_profile - Read profile table. |
573 |
* |
* |
574 |
* @head: Pointer to "struct ccs_io_buffer". |
* @head: Pointer to "struct ccs_io_buffer". |
|
* |
|
|
* Returns 0. |
|
575 |
*/ |
*/ |
576 |
static int ccs_read_profile(struct ccs_io_buffer *head) |
static void ccs_read_profile(struct ccs_io_buffer *head) |
577 |
{ |
{ |
578 |
static const int ccs_total |
int index; |
|
= CCS_MAX_CONTROL_INDEX + CCS_MAX_CAPABILITY_INDEX + 1; |
|
|
int step; |
|
579 |
if (head->read_eof) |
if (head->read_eof) |
580 |
return 0; |
return; |
581 |
for (step = head->read_step; step < CCS_MAX_PROFILES * ccs_total; |
if (head->read_bit) |
582 |
step++) { |
goto body; |
583 |
const u8 index = step / ccs_total; |
ccs_io_printf(head, "PROFILE_VERSION=%s\n", "20090903"); |
584 |
u8 type = step % ccs_total; |
ccs_print_preference(head, -1); |
585 |
const struct ccs_profile *ccs_profile = ccs_profile_ptr[index]; |
head->read_bit = 1; |
586 |
head->read_step = step; |
body: |
587 |
if (!ccs_profile) |
for (index = head->read_step; index < CCS_MAX_PROFILES; index++) { |
588 |
continue; |
bool done; |
589 |
if (!ccs_profile_entry_used[type]) |
u8 config; |
590 |
continue; |
int i; |
591 |
if (!type) { /* Print profile' comment tag. */ |
int pos; |
592 |
bool done; |
const struct ccs_profile *profile = ccs_profile_ptr[index]; |
593 |
/***** CRITICAL SECTION START *****/ |
const struct ccs_path_info *comment; |
594 |
spin_lock(&ccs_profile_comment_lock); |
head->read_step = index; |
595 |
done = ccs_io_printf(head, "%u-COMMENT=%s\n", |
if (!profile) |
|
index, ccs_profile->comment ? |
|
|
ccs_profile->comment->name : ""); |
|
|
spin_unlock(&ccs_profile_comment_lock); |
|
|
/***** CRITICAL SECTION END *****/ |
|
|
if (!done) |
|
|
break; |
|
596 |
continue; |
continue; |
597 |
|
pos = head->read_avail; |
598 |
|
comment = profile->comment; |
599 |
|
done = ccs_io_printf(head, "%u-COMMENT=%s\n", index, |
600 |
|
comment ? comment->name : ""); |
601 |
|
if (!done) |
602 |
|
goto out; |
603 |
|
config = profile->default_config; |
604 |
|
#ifdef CONFIG_CCSECURITY_AUDIT |
605 |
|
if (!ccs_io_printf(head, "%u-%s%s={ mode=%s " |
606 |
|
"grant_log=%s reject_log=%s }\n", index, |
607 |
|
"CONFIG", "", ccs_mode_4[config & 3], |
608 |
|
ccs_yesno(config & |
609 |
|
CCS_CONFIG_WANT_GRANT_LOG), |
610 |
|
ccs_yesno(config & |
611 |
|
CCS_CONFIG_WANT_REJECT_LOG))) |
612 |
|
goto out; |
613 |
|
#else |
614 |
|
if (!ccs_io_printf(head, "%u-%s%s={ mode=%s }\n", index, |
615 |
|
"CONFIG", "", ccs_mode_4[config & 3])) |
616 |
|
goto out; |
617 |
|
#endif |
618 |
|
for (i = 0; i < CCS_MAX_MAC_INDEX + CCS_MAX_CAPABILITY_INDEX |
619 |
|
+ CCS_MAX_MAC_CATEGORY_INDEX; i++) { |
620 |
|
#ifdef CONFIG_CCSECURITY_AUDIT |
621 |
|
const char *g; |
622 |
|
const char *r; |
623 |
|
#endif |
624 |
|
config = profile->config[i]; |
625 |
|
if (config == CCS_CONFIG_USE_DEFAULT) |
626 |
|
continue; |
627 |
|
#ifdef CONFIG_CCSECURITY_AUDIT |
628 |
|
g = ccs_yesno(config & CCS_CONFIG_WANT_GRANT_LOG); |
629 |
|
r = ccs_yesno(config & CCS_CONFIG_WANT_REJECT_LOG); |
630 |
|
if (!ccs_io_printf(head, "%u-%s%s={ mode=%s " |
631 |
|
"grant_log=%s reject_log=%s }\n", |
632 |
|
index, "CONFIG::", |
633 |
|
ccs_mac_keywords[i], |
634 |
|
ccs_mode_4[config & 3], g, r)) |
635 |
|
goto out; |
636 |
|
#else |
637 |
|
if (!ccs_io_printf(head, "%u-%s%s={ mode=%s }\n", |
638 |
|
index, "CONFIG::", |
639 |
|
ccs_mac_keywords[i], |
640 |
|
ccs_mode_4[config & 3])) |
641 |
|
goto out; |
642 |
|
#endif |
643 |
} |
} |
644 |
type--; |
if (!ccs_print_preference(head, index)) |
645 |
if (type >= CCS_MAX_CONTROL_INDEX) { |
goto out; |
646 |
const int i = type - CCS_MAX_CONTROL_INDEX; |
continue; |
647 |
const u8 value = ccs_profile->capability_value[i]; |
out: |
648 |
if (!ccs_io_printf(head, |
head->read_avail = pos; |
649 |
"%u-" CCS_KEYWORD_MAC_FOR_CAPABILITY |
break; |
|
"%s=%s\n", index, |
|
|
ccs_capability_control_keyword[i], |
|
|
ccs_mode_4[value])) |
|
|
break; |
|
|
} else { |
|
|
const unsigned int value = ccs_profile->value[type]; |
|
|
const char **modes = NULL; |
|
|
const char *keyword = ccs_control_array[type].keyword; |
|
|
switch (ccs_control_array[type].max_value) { |
|
|
case 3: |
|
|
modes = ccs_mode_4; |
|
|
break; |
|
|
case 1: |
|
|
modes = ccs_mode_2; |
|
|
break; |
|
|
} |
|
|
if (modes) { |
|
|
if (!ccs_io_printf(head, "%u-%s=%s\n", index, |
|
|
keyword, modes[value])) |
|
|
break; |
|
|
} else { |
|
|
if (!ccs_io_printf(head, "%u-%s=%u\n", index, |
|
|
keyword, value)) |
|
|
break; |
|
|
} |
|
|
} |
|
650 |
} |
} |
651 |
if (step == CCS_MAX_PROFILES * ccs_total) |
if (index == CCS_MAX_PROFILES) |
652 |
head->read_eof = true; |
head->read_eof = true; |
|
return 0; |
|
653 |
} |
} |
654 |
|
|
655 |
/* The list for "struct ccs_policy_manager_entry". */ |
static bool ccs_same_manager_entry(const struct ccs_acl_head *a, |
656 |
LIST_HEAD(ccs_policy_manager_list); |
const struct ccs_acl_head *b) |
657 |
|
{ |
658 |
|
return container_of(a, struct ccs_manager, head)->manager |
659 |
|
== container_of(b, struct ccs_manager, head)->manager; |
660 |
|
} |
661 |
|
|
662 |
/** |
/** |
663 |
* ccs_update_manager_entry - Add a manager entry. |
* ccs_update_manager_entry - Add a manager entry. |
669 |
*/ |
*/ |
670 |
static int ccs_update_manager_entry(const char *manager, const bool is_delete) |
static int ccs_update_manager_entry(const char *manager, const bool is_delete) |
671 |
{ |
{ |
672 |
struct ccs_policy_manager_entry *entry = NULL; |
struct ccs_manager e = { }; |
|
struct ccs_policy_manager_entry *ptr; |
|
|
const struct ccs_path_info *saved_manager; |
|
673 |
int error = is_delete ? -ENOENT : -ENOMEM; |
int error = is_delete ? -ENOENT : -ENOMEM; |
674 |
bool is_domain = false; |
if (ccs_domain_def(manager)) { |
675 |
if (ccs_is_domain_def(manager)) { |
if (!ccs_correct_domain(manager)) |
|
if (!ccs_is_correct_domain(manager)) |
|
676 |
return -EINVAL; |
return -EINVAL; |
677 |
is_domain = true; |
e.is_domain = true; |
678 |
} else { |
} else { |
679 |
if (!ccs_is_correct_path(manager, 1, -1, -1)) |
if (!ccs_correct_path(manager, 1, -1, -1)) |
680 |
return -EINVAL; |
return -EINVAL; |
681 |
} |
} |
682 |
saved_manager = ccs_get_name(manager); |
e.manager = ccs_get_name(manager); |
683 |
if (!saved_manager) |
if (!e.manager) |
684 |
return -ENOMEM; |
return error; |
685 |
if (!is_delete) |
error = ccs_update_policy(&e.head, sizeof(e), is_delete, |
686 |
entry = kzalloc(sizeof(*entry), GFP_KERNEL); |
CCS_ID_MANAGER, ccs_same_manager_entry); |
687 |
mutex_lock(&ccs_policy_lock); |
ccs_put_name(e.manager); |
|
list_for_each_entry_rcu(ptr, &ccs_policy_manager_list, list) { |
|
|
if (ptr->manager != saved_manager) |
|
|
continue; |
|
|
ptr->is_deleted = is_delete; |
|
|
error = 0; |
|
|
break; |
|
|
} |
|
|
if (!is_delete && error && ccs_memory_ok(entry, sizeof(*entry))) { |
|
|
entry->manager = saved_manager; |
|
|
saved_manager = NULL; |
|
|
entry->is_domain = is_domain; |
|
|
list_add_tail_rcu(&entry->list, &ccs_policy_manager_list); |
|
|
entry = NULL; |
|
|
error = 0; |
|
|
} |
|
|
mutex_unlock(&ccs_policy_lock); |
|
|
ccs_put_name(saved_manager); |
|
|
kfree(entry); |
|
688 |
return error; |
return error; |
689 |
} |
} |
690 |
|
|
691 |
/** |
/** |
692 |
* ccs_write_manager_policy - Write manager policy. |
* ccs_write_manager - Write manager policy. |
693 |
* |
* |
694 |
* @head: Pointer to "struct ccs_io_buffer". |
* @head: Pointer to "struct ccs_io_buffer". |
695 |
* |
* |
696 |
* Returns 0 on success, negative value otherwise. |
* Returns 0 on success, negative value otherwise. |
697 |
*/ |
*/ |
698 |
static int ccs_write_manager_policy(struct ccs_io_buffer *head) |
static int ccs_write_manager(struct ccs_io_buffer *head) |
699 |
{ |
{ |
700 |
char *data = head->write_buf; |
char *data = head->write_buf; |
701 |
bool is_delete = ccs_str_starts(&data, CCS_KEYWORD_DELETE); |
bool is_delete = ccs_str_starts(&data, CCS_KEYWORD_DELETE); |
707 |
} |
} |
708 |
|
|
709 |
/** |
/** |
710 |
* ccs_read_manager_policy - Read manager policy. |
* ccs_read_manager - Read manager policy. |
711 |
* |
* |
712 |
* @head: Pointer to "struct ccs_io_buffer". |
* @head: Pointer to "struct ccs_io_buffer". |
713 |
* |
* |
|
* Returns 0. |
|
|
* |
|
714 |
* Caller holds ccs_read_lock(). |
* Caller holds ccs_read_lock(). |
715 |
*/ |
*/ |
716 |
static int ccs_read_manager_policy(struct ccs_io_buffer *head) |
static void ccs_read_manager(struct ccs_io_buffer *head) |
717 |
{ |
{ |
718 |
struct list_head *pos; |
struct list_head *pos; |
|
ccs_check_read_lock(); |
|
719 |
if (head->read_eof) |
if (head->read_eof) |
720 |
return 0; |
return; |
721 |
list_for_each_cookie(pos, head->read_var2, &ccs_policy_manager_list) { |
list_for_each_cookie(pos, head->read_var2, |
722 |
struct ccs_policy_manager_entry *ptr; |
&ccs_policy_list[CCS_ID_MANAGER]) { |
723 |
ptr = list_entry(pos, struct ccs_policy_manager_entry, list); |
struct ccs_manager *ptr |
724 |
if (ptr->is_deleted) |
= list_entry(pos, typeof(*ptr), head.list); |
725 |
|
if (ptr->head.is_deleted) |
726 |
continue; |
continue; |
727 |
if (!ccs_io_printf(head, "%s\n", ptr->manager->name)) |
if (!ccs_io_printf(head, "%s\n", ptr->manager->name)) |
728 |
return 0; |
return; |
729 |
} |
} |
730 |
head->read_eof = true; |
head->read_eof = true; |
|
return 0; |
|
731 |
} |
} |
732 |
|
|
733 |
/** |
/** |
734 |
* ccs_is_policy_manager - Check whether the current process is a policy manager. |
* ccs_manager - Check whether the current process is a policy manager. |
735 |
* |
* |
736 |
* Returns true if the current process is permitted to modify policy |
* Returns true if the current process is permitted to modify policy |
737 |
* via /proc/ccs/ interface. |
* via /proc/ccs/ interface. |
738 |
* |
* |
739 |
* Caller holds ccs_read_lock(). |
* Caller holds ccs_read_lock(). |
740 |
*/ |
*/ |
741 |
static bool ccs_is_policy_manager(void) |
static bool ccs_manager(void) |
742 |
{ |
{ |
743 |
struct ccs_policy_manager_entry *ptr; |
struct ccs_manager *ptr; |
744 |
const char *exe; |
const char *exe; |
745 |
struct task_struct *task = current; |
struct task_struct *task = current; |
746 |
const struct ccs_path_info *domainname |
const struct ccs_path_info *domainname |
747 |
= ccs_current_domain()->domainname; |
= ccs_current_domain()->domainname; |
748 |
bool found = false; |
bool found = false; |
|
ccs_check_read_lock(); |
|
749 |
if (!ccs_policy_loaded) |
if (!ccs_policy_loaded) |
750 |
return true; |
return true; |
751 |
if (task->ccs_flags & CCS_TASK_IS_POLICY_MANAGER) |
if (task->ccs_flags & CCS_TASK_IS_MANAGER) |
752 |
return true; |
return true; |
753 |
if (!ccs_manage_by_non_root && (current_uid() || current_euid())) |
if (!ccs_manage_by_non_root && (current_uid() || current_euid())) |
754 |
return false; |
return false; |
|
list_for_each_entry_rcu(ptr, &ccs_policy_manager_list, list) { |
|
|
if (!ptr->is_deleted && ptr->is_domain |
|
|
&& !ccs_pathcmp(domainname, ptr->manager)) { |
|
|
/* Set manager flag. */ |
|
|
task->ccs_flags |= CCS_TASK_IS_POLICY_MANAGER; |
|
|
return true; |
|
|
} |
|
|
} |
|
755 |
exe = ccs_get_exe(); |
exe = ccs_get_exe(); |
756 |
if (!exe) |
list_for_each_entry_rcu(ptr, &ccs_policy_list[CCS_ID_MANAGER], |
757 |
return false; |
head.list) { |
758 |
list_for_each_entry_rcu(ptr, &ccs_policy_manager_list, list) { |
if (ptr->head.is_deleted) |
759 |
if (!ptr->is_deleted && !ptr->is_domain |
continue; |
760 |
&& !strcmp(exe, ptr->manager->name)) { |
if (ptr->is_domain) { |
761 |
found = true; |
if (ccs_pathcmp(domainname, ptr->manager)) |
762 |
/* Set manager flag. */ |
continue; |
763 |
task->ccs_flags |= CCS_TASK_IS_POLICY_MANAGER; |
} else { |
764 |
break; |
if (!exe || strcmp(exe, ptr->manager->name)) |
765 |
|
continue; |
766 |
} |
} |
767 |
|
/* Set manager flag. */ |
768 |
|
task->ccs_flags |= CCS_TASK_IS_MANAGER; |
769 |
|
found = true; |
770 |
|
break; |
771 |
} |
} |
772 |
if (!found) { /* Reduce error messages. */ |
if (!found) { /* Reduce error messages. */ |
773 |
static pid_t ccs_last_pid; |
static pid_t ccs_last_pid; |
793 |
static char *ccs_find_condition_part(char *data) |
static char *ccs_find_condition_part(char *data) |
794 |
{ |
{ |
795 |
char *cp = strstr(data, " if "); |
char *cp = strstr(data, " if "); |
796 |
if (cp) { |
if (!cp) |
|
while (1) { |
|
|
char *cp2 = strstr(cp + 3, " if "); |
|
|
if (!cp2) |
|
|
break; |
|
|
cp = cp2; |
|
|
} |
|
|
*cp++ = '\0'; |
|
|
} else { |
|
797 |
cp = strstr(data, " ; set "); |
cp = strstr(data, " ; set "); |
798 |
if (cp) |
if (cp) |
799 |
*cp++ = '\0'; |
*cp++ = '\0'; |
|
} |
|
800 |
return cp; |
return cp; |
801 |
} |
} |
802 |
|
|
803 |
/** |
/** |
804 |
* ccs_is_select_one - Parse select command. |
* ccs_select_one - Parse select command. |
805 |
* |
* |
806 |
* @head: Pointer to "struct ccs_io_buffer". |
* @head: Pointer to "struct ccs_io_buffer". |
807 |
* @data: String to parse. |
* @data: String to parse. |
810 |
* |
* |
811 |
* Caller holds ccs_read_lock(). |
* Caller holds ccs_read_lock(). |
812 |
*/ |
*/ |
813 |
static bool ccs_is_select_one(struct ccs_io_buffer *head, const char *data) |
static bool ccs_select_one(struct ccs_io_buffer *head, const char *data) |
814 |
{ |
{ |
815 |
unsigned int pid; |
unsigned int pid; |
816 |
struct ccs_domain_info *domain = NULL; |
struct ccs_domain_info *domain = NULL; |
817 |
ccs_check_read_lock(); |
bool global_pid = false; |
818 |
if (!strcmp(data, "allow_execute")) { |
if (!strcmp(data, "allow_execute")) { |
819 |
head->read_execute_only = true; |
head->read_execute_only = true; |
820 |
return true; |
return true; |
821 |
} |
} |
822 |
if (sscanf(data, "pid=%u", &pid) == 1) { |
if (sscanf(data, "pid=%u", &pid) == 1 || |
823 |
|
(global_pid = true, sscanf(data, "global-pid=%u", &pid) == 1)) { |
824 |
struct task_struct *p; |
struct task_struct *p; |
825 |
/***** CRITICAL SECTION START *****/ |
ccs_tasklist_lock(); |
826 |
read_lock(&tasklist_lock); |
#if LINUX_VERSION_CODE >= KERNEL_VERSION(2, 6, 24) |
827 |
|
if (global_pid) |
828 |
|
p = ccsecurity_exports.find_task_by_pid_ns(pid, |
829 |
|
&init_pid_ns); |
830 |
|
else |
831 |
|
p = ccsecurity_exports.find_task_by_vpid(pid); |
832 |
|
#else |
833 |
p = find_task_by_pid(pid); |
p = find_task_by_pid(pid); |
834 |
|
#endif |
835 |
if (p) |
if (p) |
836 |
domain = ccs_task_domain(p); |
domain = ccs_task_domain(p); |
837 |
read_unlock(&tasklist_lock); |
ccs_tasklist_unlock(); |
|
/***** CRITICAL SECTION END *****/ |
|
838 |
} else if (!strncmp(data, "domain=", 7)) { |
} else if (!strncmp(data, "domain=", 7)) { |
839 |
if (ccs_is_domain_def(data + 7)) |
if (ccs_domain_def(data + 7)) |
840 |
domain = ccs_find_domain(data + 7); |
domain = ccs_find_domain(data + 7); |
841 |
} else |
} else |
842 |
return false; |
return false; |
865 |
return true; |
return true; |
866 |
} |
} |
867 |
|
|
868 |
|
static int ccs_write_domain2(char *data, struct ccs_domain_info *domain, |
869 |
|
struct ccs_condition *cond, const bool is_delete) |
870 |
|
{ |
871 |
|
u8 i; |
872 |
|
static const struct { |
873 |
|
const char *keyword; |
874 |
|
int (*write) (char *, struct ccs_domain_info *, |
875 |
|
struct ccs_condition *, const bool); |
876 |
|
} ccs_callback[5] = { |
877 |
|
{ CCS_KEYWORD_ALLOW_NETWORK, ccs_write_network }, |
878 |
|
{ CCS_KEYWORD_ALLOW_ENV, ccs_write_env }, |
879 |
|
{ CCS_KEYWORD_ALLOW_CAPABILITY, ccs_write_capability }, |
880 |
|
{ CCS_KEYWORD_ALLOW_SIGNAL, ccs_write_signal }, |
881 |
|
{ CCS_KEYWORD_ALLOW_MOUNT, ccs_write_mount } |
882 |
|
}; |
883 |
|
int (*write) (char *, struct ccs_domain_info *, struct ccs_condition *, |
884 |
|
const bool) = ccs_write_file; |
885 |
|
for (i = 0; i < 5; i++) { |
886 |
|
if (!ccs_str_starts(&data, ccs_callback[i].keyword)) |
887 |
|
continue; |
888 |
|
write = ccs_callback[i].write; |
889 |
|
break; |
890 |
|
} |
891 |
|
return write(data, domain, cond, is_delete); |
892 |
|
} |
893 |
|
|
894 |
/** |
/** |
895 |
* ccs_write_domain_policy - Write domain policy. |
* ccs_write_domain - Write domain policy. |
896 |
* |
* |
897 |
* @head: Pointer to "struct ccs_io_buffer". |
* @head: Pointer to "struct ccs_io_buffer". |
898 |
* |
* |
899 |
* Returns 0 on success, negative value otherwise. |
* Returns 0 on success, negative value otherwise. |
900 |
*/ |
*/ |
901 |
static int ccs_write_domain_policy(struct ccs_io_buffer *head) |
static int ccs_write_domain(struct ccs_io_buffer *head) |
902 |
{ |
{ |
903 |
char *data = head->write_buf; |
char *data = head->write_buf; |
904 |
struct ccs_domain_info *domain = head->write_var1; |
struct ccs_domain_info *domain = head->write_var1; |
912 |
is_delete = true; |
is_delete = true; |
913 |
else if (ccs_str_starts(&data, CCS_KEYWORD_SELECT)) |
else if (ccs_str_starts(&data, CCS_KEYWORD_SELECT)) |
914 |
is_select = true; |
is_select = true; |
915 |
if (is_select && ccs_is_select_one(head, data)) |
if (is_select && ccs_select_one(head, data)) |
916 |
return 0; |
return 0; |
917 |
/* Don't allow updating policies by non manager programs. */ |
/* Don't allow updating policies by non manager programs. */ |
918 |
if (!ccs_is_policy_manager()) |
if (!ccs_manager()) |
919 |
return -EPERM; |
return -EPERM; |
920 |
if (ccs_is_domain_def(data)) { |
if (ccs_domain_def(data)) { |
921 |
domain = NULL; |
domain = NULL; |
922 |
if (is_delete) |
if (is_delete) |
923 |
ccs_delete_domain(data); |
ccs_delete_domain(data); |
924 |
else if (is_select) |
else if (is_select) |
925 |
domain = ccs_find_domain(data); |
domain = ccs_find_domain(data); |
926 |
else |
else |
927 |
domain = ccs_find_or_assign_new_domain(data, 0); |
domain = ccs_assign_domain(data, 0); |
928 |
head->write_var1 = domain; |
head->write_var1 = domain; |
929 |
return 0; |
return 0; |
930 |
} |
} |
933 |
|
|
934 |
if (sscanf(data, CCS_KEYWORD_USE_PROFILE "%u", &profile) == 1 |
if (sscanf(data, CCS_KEYWORD_USE_PROFILE "%u", &profile) == 1 |
935 |
&& profile < CCS_MAX_PROFILES) { |
&& profile < CCS_MAX_PROFILES) { |
936 |
if (ccs_profile_ptr[profile] || !ccs_policy_loaded) |
if (!ccs_policy_loaded || ccs_profile_ptr[(u8) profile]) |
937 |
domain->profile = (u8) profile; |
domain->profile = (u8) profile; |
938 |
return 0; |
return 0; |
939 |
} |
} |
945 |
domain->ignore_global_allow_env = !is_delete; |
domain->ignore_global_allow_env = !is_delete; |
946 |
return 0; |
return 0; |
947 |
} |
} |
948 |
|
if (!strcmp(data, CCS_KEYWORD_QUOTA_EXCEEDED)) { |
949 |
|
domain->quota_warned = !is_delete; |
950 |
|
return 0; |
951 |
|
} |
952 |
|
if (!strcmp(data, CCS_KEYWORD_TRANSITION_FAILED)) { |
953 |
|
domain->domain_transition_failed = !is_delete; |
954 |
|
return 0; |
955 |
|
} |
956 |
cp = ccs_find_condition_part(data); |
cp = ccs_find_condition_part(data); |
957 |
if (cp) { |
if (cp) { |
958 |
cond = ccs_get_condition(cp); |
cond = ccs_get_condition(cp); |
959 |
if (!cond) |
if (!cond) |
960 |
return -EINVAL; |
return -EINVAL; |
961 |
} |
} |
962 |
if (ccs_str_starts(&data, CCS_KEYWORD_ALLOW_CAPABILITY)) |
error = ccs_write_domain2(data, domain, cond, is_delete); |
|
error = ccs_write_capability_policy(data, domain, cond, |
|
|
is_delete); |
|
|
else if (ccs_str_starts(&data, CCS_KEYWORD_ALLOW_NETWORK)) |
|
|
error = ccs_write_network_policy(data, domain, cond, is_delete); |
|
|
else if (ccs_str_starts(&data, CCS_KEYWORD_ALLOW_SIGNAL)) |
|
|
error = ccs_write_signal_policy(data, domain, cond, is_delete); |
|
|
else if (ccs_str_starts(&data, CCS_KEYWORD_ALLOW_ENV)) |
|
|
error = ccs_write_env_policy(data, domain, cond, is_delete); |
|
|
else if (ccs_str_starts(&data, CCS_KEYWORD_ALLOW_MOUNT)) |
|
|
error = ccs_write_mount_policy(data, domain, cond, is_delete); |
|
|
else if (ccs_str_starts(&data, CCS_KEYWORD_ALLOW_UNMOUNT)) |
|
|
error = ccs_write_umount_policy(data, domain, cond, is_delete); |
|
|
else if (ccs_str_starts(&data, CCS_KEYWORD_ALLOW_CHROOT)) |
|
|
error = ccs_write_chroot_policy(data, domain, cond, is_delete); |
|
|
else if (ccs_str_starts(&data, CCS_KEYWORD_ALLOW_PIVOT_ROOT)) |
|
|
error = ccs_write_pivot_root_policy(data, domain, cond, |
|
|
is_delete); |
|
|
else |
|
|
error = ccs_write_file_policy(data, domain, cond, is_delete); |
|
963 |
if (cond) |
if (cond) |
964 |
ccs_put_condition(cond); |
ccs_put_condition(cond); |
965 |
return error; |
return error; |
966 |
} |
} |
967 |
|
|
968 |
|
/** |
969 |
|
* ccs_print_name_union - Print a ccs_name_union. |
970 |
|
* |
971 |
|
* @head: Pointer to "struct ccs_io_buffer". |
972 |
|
* @ptr: Pointer to "struct ccs_name_union". |
973 |
|
* |
974 |
|
* Returns true on success, false otherwise. |
975 |
|
*/ |
976 |
static bool ccs_print_name_union(struct ccs_io_buffer *head, |
static bool ccs_print_name_union(struct ccs_io_buffer *head, |
977 |
const struct ccs_name_union *ptr) |
const struct ccs_name_union *ptr) |
978 |
{ |
{ |
985 |
return ccs_io_printf(head, " %s", ptr->filename->name); |
return ccs_io_printf(head, " %s", ptr->filename->name); |
986 |
} |
} |
987 |
|
|
988 |
|
/** |
989 |
|
* ccs_print_name_union_quoted - Print a ccs_name_union with double quotes. |
990 |
|
* |
991 |
|
* @head: Pointer to "struct ccs_io_buffer". |
992 |
|
* @ptr: Pointer to "struct ccs_name_union". |
993 |
|
* |
994 |
|
* Returns true on success, false otherwise. |
995 |
|
*/ |
996 |
static bool ccs_print_name_union_quoted(struct ccs_io_buffer *head, |
static bool ccs_print_name_union_quoted(struct ccs_io_buffer *head, |
997 |
const struct ccs_name_union *ptr) |
const struct ccs_name_union *ptr) |
998 |
{ |
{ |
1002 |
return ccs_io_printf(head, "\"%s\"", ptr->filename->name); |
return ccs_io_printf(head, "\"%s\"", ptr->filename->name); |
1003 |
} |
} |
1004 |
|
|
1005 |
|
static void ccs_print_number(char *buffer, int buffer_len, |
1006 |
|
const struct ccs_number_union *ptr) |
1007 |
|
{ |
1008 |
|
int i; |
1009 |
|
unsigned long min = ptr->values[0]; |
1010 |
|
const unsigned long max = ptr->values[1]; |
1011 |
|
u8 min_type = ptr->value_type[0]; |
1012 |
|
const u8 max_type = ptr->value_type[1]; |
1013 |
|
memset(buffer, 0, buffer_len); |
1014 |
|
buffer_len -= 2; |
1015 |
|
for (i = 0; i < 2; i++) { |
1016 |
|
int len; |
1017 |
|
switch (min_type) { |
1018 |
|
case CCS_VALUE_TYPE_HEXADECIMAL: |
1019 |
|
snprintf(buffer, buffer_len, "0x%lX", min); |
1020 |
|
break; |
1021 |
|
case CCS_VALUE_TYPE_OCTAL: |
1022 |
|
snprintf(buffer, buffer_len, "0%lo", min); |
1023 |
|
break; |
1024 |
|
default: |
1025 |
|
snprintf(buffer, buffer_len, "%lu", min); |
1026 |
|
break; |
1027 |
|
} |
1028 |
|
if (min == max && min_type == max_type) |
1029 |
|
break; |
1030 |
|
len = strlen(buffer); |
1031 |
|
buffer[len++] = '-'; |
1032 |
|
buffer += len; |
1033 |
|
buffer_len -= len; |
1034 |
|
min_type = max_type; |
1035 |
|
min = max; |
1036 |
|
} |
1037 |
|
} |
1038 |
|
|
1039 |
|
/** |
1040 |
|
* ccs_print_number_union_common - Print a ccs_number_union. |
1041 |
|
* |
1042 |
|
* @head: Pointer to "struct ccs_io_buffer". |
1043 |
|
* @ptr: Pointer to "struct ccs_number_union". |
1044 |
|
* @need_space: True if a space character is needed. |
1045 |
|
* |
1046 |
|
* Returns true on success, false otherwise. |
1047 |
|
*/ |
1048 |
static bool ccs_print_number_union_common(struct ccs_io_buffer *head, |
static bool ccs_print_number_union_common(struct ccs_io_buffer *head, |
1049 |
const struct ccs_number_union *ptr, |
const struct ccs_number_union *ptr, |
1050 |
const bool need_space) |
const bool need_space) |
1051 |
{ |
{ |
1052 |
unsigned long min; |
char buffer[128]; |
|
unsigned long max; |
|
|
u8 min_type; |
|
|
u8 max_type; |
|
1053 |
if (need_space && !ccs_io_printf(head, " ")) |
if (need_space && !ccs_io_printf(head, " ")) |
1054 |
return false; |
return false; |
1055 |
if (ptr->is_group) |
if (ptr->is_group) |
1056 |
return ccs_io_printf(head, "@%s", |
return ccs_io_printf(head, "@%s", |
1057 |
ptr->group->group_name->name); |
ptr->group->group_name->name); |
1058 |
min_type = ptr->min_type; |
ccs_print_number(buffer, sizeof(buffer), ptr); |
1059 |
max_type = ptr->max_type; |
return ccs_io_printf(head, "%s", buffer); |
|
min = ptr->values[0]; |
|
|
max = ptr->values[1]; |
|
|
switch (min_type) { |
|
|
case CCS_VALUE_TYPE_HEXADECIMAL: |
|
|
if (!ccs_io_printf(head, "0x%lX", min)) |
|
|
return false; |
|
|
break; |
|
|
case CCS_VALUE_TYPE_OCTAL: |
|
|
if (!ccs_io_printf(head, "0%lo", min)) |
|
|
return false; |
|
|
break; |
|
|
default: |
|
|
if (!ccs_io_printf(head, "%lu", min)) |
|
|
return false; |
|
|
break; |
|
|
} |
|
|
if (min == max && min_type == max_type) |
|
|
return true; |
|
|
switch (max_type) { |
|
|
case CCS_VALUE_TYPE_HEXADECIMAL: |
|
|
return ccs_io_printf(head, "-0x%lX", max); |
|
|
case CCS_VALUE_TYPE_OCTAL: |
|
|
return ccs_io_printf(head, "-0%lo", max); |
|
|
default: |
|
|
return ccs_io_printf(head, "-%lu", max); |
|
|
} |
|
1060 |
} |
} |
1061 |
|
|
1062 |
|
/** |
1063 |
|
* ccs_print_number_union - Print a ccs_number_union. |
1064 |
|
* |
1065 |
|
* @head: Pointer to "struct ccs_io_buffer". |
1066 |
|
* @ptr: Pointer to "struct ccs_number_union". |
1067 |
|
* |
1068 |
|
* Returns true on success, false otherwise. |
1069 |
|
*/ |
1070 |
static bool ccs_print_number_union(struct ccs_io_buffer *head, |
static bool ccs_print_number_union(struct ccs_io_buffer *head, |
1071 |
const struct ccs_number_union *ptr) |
const struct ccs_number_union *ptr) |
1072 |
{ |
{ |
1073 |
return ccs_print_number_union_common(head, ptr, true); |
return ccs_print_number_union_common(head, ptr, true); |
1074 |
} |
} |
1075 |
|
|
1076 |
|
/** |
1077 |
|
* ccs_print_number_union_nospace - Print a ccs_number_union without a space character. |
1078 |
|
* |
1079 |
|
* @head: Pointer to "struct ccs_io_buffer". |
1080 |
|
* @ptr: Pointer to "struct ccs_number_union". |
1081 |
|
* |
1082 |
|
* Returns true on success, false otherwise. |
1083 |
|
*/ |
1084 |
static bool ccs_print_number_union_nospace(struct ccs_io_buffer *head, |
static bool ccs_print_number_union_nospace(struct ccs_io_buffer *head, |
1085 |
const struct ccs_number_union *ptr) |
const struct ccs_number_union *ptr) |
1086 |
{ |
{ |
1101 |
const struct ccs_condition_element *condp; |
const struct ccs_condition_element *condp; |
1102 |
const struct ccs_number_union *numbers_p; |
const struct ccs_number_union *numbers_p; |
1103 |
const struct ccs_name_union *names_p; |
const struct ccs_name_union *names_p; |
1104 |
const struct ccs_argv_entry *argv; |
const struct ccs_argv *argv; |
1105 |
const struct ccs_envp_entry *envp; |
const struct ccs_envp *envp; |
1106 |
u16 condc; |
u16 condc; |
1107 |
u16 i; |
u16 i; |
1108 |
u16 j; |
u16 j; |
1114 |
numbers_p = (const struct ccs_number_union *) (condp + condc); |
numbers_p = (const struct ccs_number_union *) (condp + condc); |
1115 |
names_p = (const struct ccs_name_union *) |
names_p = (const struct ccs_name_union *) |
1116 |
(numbers_p + cond->numbers_count); |
(numbers_p + cond->numbers_count); |
1117 |
argv = (const struct ccs_argv_entry *) (names_p + cond->names_count); |
argv = (const struct ccs_argv *) (names_p + cond->names_count); |
1118 |
envp = (const struct ccs_envp_entry *) (argv + cond->argc); |
envp = (const struct ccs_envp *) (argv + cond->argc); |
1119 |
memset(buffer, 0, sizeof(buffer)); |
memset(buffer, 0, sizeof(buffer)); |
1120 |
if (condc && !ccs_io_printf(head, "%s", " if")) |
if (condc && !ccs_io_printf(head, "%s", " if")) |
1121 |
goto out; |
goto out; |
1191 |
cond->post_state[j])) |
cond->post_state[j])) |
1192 |
goto out; |
goto out; |
1193 |
} |
} |
1194 |
|
if (i & (1 << 4)) { |
1195 |
|
if (!ccs_io_printf(head, " audit=%s", |
1196 |
|
ccs_yesno(cond->post_state[4]))) |
1197 |
|
goto out; |
1198 |
|
} |
1199 |
no_condition: |
no_condition: |
1200 |
if (ccs_io_printf(head, "\n")) |
if (ccs_io_printf(head, "\n")) |
1201 |
return true; |
return true; |
1204 |
} |
} |
1205 |
|
|
1206 |
/** |
/** |
1207 |
* ccs_print_single_path_acl - Print a single path ACL entry. |
* ccs_print_path_acl - Print a path ACL entry. |
1208 |
* |
* |
1209 |
* @head: Pointer to "struct ccs_io_buffer". |
* @head: Pointer to "struct ccs_io_buffer". |
1210 |
* @ptr: Pointer to "struct ccs_single_path_acl_record". |
* @ptr: Pointer to "struct ccs_path_acl". |
1211 |
* @cond: Pointer to "struct ccs_condition". May be NULL. |
* @cond: Pointer to "struct ccs_condition". May be NULL. |
1212 |
* |
* |
1213 |
* Returns true on success, false otherwise. |
* Returns true on success, false otherwise. |
1214 |
*/ |
*/ |
1215 |
static bool ccs_print_single_path_acl(struct ccs_io_buffer *head, |
static bool ccs_print_path_acl(struct ccs_io_buffer *head, |
1216 |
struct ccs_single_path_acl_record *ptr, |
struct ccs_path_acl *ptr, |
1217 |
const struct ccs_condition *cond) |
const struct ccs_condition *cond) |
1218 |
{ |
{ |
1219 |
int pos; |
int pos; |
1220 |
u8 bit; |
u8 bit; |
1221 |
const u16 perm = ptr->perm; |
const u16 perm = ptr->perm; |
1222 |
for (bit = head->read_bit; bit < CCS_MAX_SINGLE_PATH_OPERATION; bit++) { |
for (bit = head->read_bit; bit < CCS_MAX_PATH_OPERATION; bit++) { |
|
const char *msg; |
|
1223 |
if (!(perm & (1 << bit))) |
if (!(perm & (1 << bit))) |
1224 |
continue; |
continue; |
1225 |
if (head->read_execute_only && bit != CCS_TYPE_EXECUTE_ACL) |
if (head->read_execute_only && bit != CCS_TYPE_EXECUTE |
1226 |
|
&& bit != CCS_TYPE_TRANSIT) |
1227 |
continue; |
continue; |
1228 |
/* Print "read/write" instead of "read" and "write". */ |
/* Print "read/write" instead of "read" and "write". */ |
1229 |
if ((bit == CCS_TYPE_READ_ACL || bit == CCS_TYPE_WRITE_ACL) |
if ((bit == CCS_TYPE_READ || bit == CCS_TYPE_WRITE) |
1230 |
&& (perm & (1 << CCS_TYPE_READ_WRITE_ACL))) |
&& (perm & (1 << CCS_TYPE_READ_WRITE))) |
1231 |
continue; |
continue; |
|
msg = ccs_sp2keyword(bit); |
|
1232 |
pos = head->read_avail; |
pos = head->read_avail; |
1233 |
if (!ccs_io_printf(head, "allow_%s", msg) || |
if (!ccs_io_printf(head, "allow_%s", ccs_path2keyword(bit)) || |
1234 |
!ccs_print_name_union(head, &ptr->name) || |
!ccs_print_name_union(head, &ptr->name) || |
1235 |
!ccs_print_condition(head, cond)) |
!ccs_print_condition(head, cond)) { |
1236 |
goto out; |
head->read_bit = bit; |
1237 |
|
head->read_avail = pos; |
1238 |
|
return false; |
1239 |
|
} |
1240 |
} |
} |
1241 |
head->read_bit = 0; |
head->read_bit = 0; |
1242 |
return true; |
return true; |
|
out: |
|
|
head->read_bit = bit; |
|
|
head->read_avail = pos; |
|
|
return false; |
|
1243 |
} |
} |
1244 |
|
|
1245 |
/** |
/** |
1246 |
* ccs_print_mkdev_acl - Print a mkdev ACL entry. |
* ccs_print_path_number3_acl - Print a path_number3 ACL entry. |
1247 |
* |
* |
1248 |
* @head: Pointer to "struct ccs_io_buffer". |
* @head: Pointer to "struct ccs_io_buffer". |
1249 |
* @ptr: Pointer to "struct ccs_mkdev_acl_record". |
* @ptr: Pointer to "struct ccs_path_number3_acl". |
1250 |
* @cond: Pointer to "struct ccs_condition". May be NULL. |
* @cond: Pointer to "struct ccs_condition". May be NULL. |
1251 |
* |
* |
1252 |
* Returns true on success, false otherwise. |
* Returns true on success, false otherwise. |
1253 |
*/ |
*/ |
1254 |
static bool ccs_print_mkdev_acl(struct ccs_io_buffer *head, |
static bool ccs_print_path_number3_acl(struct ccs_io_buffer *head, |
1255 |
struct ccs_mkdev_acl_record *ptr, |
struct ccs_path_number3_acl *ptr, |
1256 |
const struct ccs_condition *cond) |
const struct ccs_condition *cond) |
1257 |
{ |
{ |
1258 |
int pos; |
int pos; |
1259 |
u8 bit; |
u8 bit; |
1260 |
const u16 perm = ptr->perm; |
const u16 perm = ptr->perm; |
1261 |
for (bit = head->read_bit; bit < CCS_MAX_MKDEV_OPERATION; bit++) { |
for (bit = head->read_bit; bit < CCS_MAX_PATH_NUMBER3_OPERATION; |
1262 |
const char *msg; |
bit++) { |
1263 |
if (!(perm & (1 << bit))) |
if (!(perm & (1 << bit))) |
1264 |
continue; |
continue; |
|
msg = ccs_mkdev2keyword(bit); |
|
1265 |
pos = head->read_avail; |
pos = head->read_avail; |
1266 |
if (!ccs_io_printf(head, "allow_%s", msg) || |
if (!ccs_io_printf(head, "allow_%s", |
1267 |
|
ccs_path_number32keyword(bit)) || |
1268 |
!ccs_print_name_union(head, &ptr->name) || |
!ccs_print_name_union(head, &ptr->name) || |
1269 |
|
!ccs_print_number_union(head, &ptr->mode) || |
1270 |
!ccs_print_number_union(head, &ptr->major) || |
!ccs_print_number_union(head, &ptr->major) || |
1271 |
!ccs_print_number_union(head, &ptr->minor) || |
!ccs_print_number_union(head, &ptr->minor) || |
1272 |
!ccs_print_condition(head, cond)) |
!ccs_print_condition(head, cond)) { |
1273 |
goto out; |
head->read_bit = bit; |
1274 |
|
head->read_avail = pos; |
1275 |
|
return false; |
1276 |
|
} |
1277 |
} |
} |
1278 |
head->read_bit = 0; |
head->read_bit = 0; |
1279 |
return true; |
return true; |
|
out: |
|
|
head->read_bit = bit; |
|
|
head->read_avail = pos; |
|
|
return false; |
|
1280 |
} |
} |
1281 |
|
|
1282 |
/** |
/** |
1283 |
* ccs_print_double_path_acl - Print a double path ACL entry. |
* ccs_print_path2_acl - Print a path2 ACL entry. |
1284 |
* |
* |
1285 |
* @head: Pointer to "struct ccs_io_buffer". |
* @head: Pointer to "struct ccs_io_buffer". |
1286 |
* @ptr: Pointer to "struct ccs_double_path_acl_record". |
* @ptr: Pointer to "struct ccs_path2_acl". |
1287 |
* @cond: Pointer to "struct ccs_condition". May be NULL. |
* @cond: Pointer to "struct ccs_condition". May be NULL. |
1288 |
* |
* |
1289 |
* Returns true on success, false otherwise. |
* Returns true on success, false otherwise. |
1290 |
*/ |
*/ |
1291 |
static bool ccs_print_double_path_acl(struct ccs_io_buffer *head, |
static bool ccs_print_path2_acl(struct ccs_io_buffer *head, |
1292 |
struct ccs_double_path_acl_record *ptr, |
struct ccs_path2_acl *ptr, |
1293 |
const struct ccs_condition *cond) |
const struct ccs_condition *cond) |
1294 |
{ |
{ |
1295 |
int pos; |
int pos; |
1296 |
u8 bit; |
u8 bit; |
1297 |
const u8 perm = ptr->perm; |
const u8 perm = ptr->perm; |
1298 |
for (bit = head->read_bit; bit < CCS_MAX_DOUBLE_PATH_OPERATION; bit++) { |
for (bit = head->read_bit; bit < CCS_MAX_PATH2_OPERATION; bit++) { |
|
const char *msg; |
|
1299 |
if (!(perm & (1 << bit))) |
if (!(perm & (1 << bit))) |
1300 |
continue; |
continue; |
|
msg = ccs_dp2keyword(bit); |
|
1301 |
pos = head->read_avail; |
pos = head->read_avail; |
1302 |
if (!ccs_io_printf(head, "allow_%s", msg) || |
if (!ccs_io_printf(head, "allow_%s", |
1303 |
|
ccs_path22keyword(bit)) || |
1304 |
!ccs_print_name_union(head, &ptr->name1) || |
!ccs_print_name_union(head, &ptr->name1) || |
1305 |
!ccs_print_name_union(head, &ptr->name2) || |
!ccs_print_name_union(head, &ptr->name2) || |
1306 |
!ccs_print_condition(head, cond)) |
!ccs_print_condition(head, cond)) { |
1307 |
goto out; |
head->read_bit = bit; |
1308 |
|
head->read_avail = pos; |
1309 |
|
return false; |
1310 |
|
} |
1311 |
} |
} |
1312 |
head->read_bit = 0; |
head->read_bit = 0; |
1313 |
return true; |
return true; |
|
out: |
|
|
head->read_bit = bit; |
|
|
head->read_avail = pos; |
|
|
return false; |
|
1314 |
} |
} |
1315 |
|
|
1316 |
/** |
/** |
1317 |
* ccs_print_path_number_acl - Print an ioctl/chmod/chown/chgrp ACL entry. |
* ccs_print_path_number_acl - Print a path_number ACL entry. |
1318 |
* |
* |
1319 |
* @head: Pointer to "struct ccs_io_buffer". |
* @head: Pointer to "struct ccs_io_buffer". |
1320 |
* @ptr: Pointer to "struct ccs_path_number_acl_record". |
* @ptr: Pointer to "struct ccs_path_number_acl". |
1321 |
* @cond: Pointer to "struct ccs_condition". May be NULL. |
* @cond: Pointer to "struct ccs_condition". May be NULL. |
1322 |
* |
* |
1323 |
* Returns true on success, false otherwise. |
* Returns true on success, false otherwise. |
1324 |
*/ |
*/ |
1325 |
static bool ccs_print_path_number_acl(struct ccs_io_buffer *head, |
static bool ccs_print_path_number_acl(struct ccs_io_buffer *head, |
1326 |
struct ccs_path_number_acl_record *ptr, |
struct ccs_path_number_acl *ptr, |
1327 |
const struct ccs_condition *cond) |
const struct ccs_condition *cond) |
1328 |
{ |
{ |
1329 |
int pos; |
int pos; |
1330 |
u8 bit; |
u8 bit; |
1331 |
const u8 perm = ptr->perm; |
const u8 perm = ptr->perm; |
1332 |
for (bit = head->read_bit; bit < CCS_MAX_PATH_NUMBER_OPERATION; bit++) { |
for (bit = head->read_bit; bit < CCS_MAX_PATH_NUMBER_OPERATION; |
1333 |
const char *msg; |
bit++) { |
1334 |
if (!(perm & (1 << bit))) |
if (!(perm & (1 << bit))) |
1335 |
continue; |
continue; |
|
msg = ccs_path_number2keyword(bit); |
|
1336 |
pos = head->read_avail; |
pos = head->read_avail; |
1337 |
if (!ccs_io_printf(head, "allow_%s", msg) || |
if (!ccs_io_printf(head, "allow_%s", |
1338 |
|
ccs_path_number2keyword(bit)) || |
1339 |
!ccs_print_name_union(head, &ptr->name) || |
!ccs_print_name_union(head, &ptr->name) || |
1340 |
!ccs_print_number_union(head, &ptr->number) || |
!ccs_print_number_union(head, &ptr->number) || |
1341 |
!ccs_print_condition(head, cond)) |
!ccs_print_condition(head, cond)) { |
1342 |
goto out; |
head->read_bit = bit; |
1343 |
|
head->read_avail = pos; |
1344 |
|
return false; |
1345 |
|
} |
1346 |
} |
} |
1347 |
head->read_bit = 0; |
head->read_bit = 0; |
1348 |
return true; |
return true; |
|
out: |
|
|
head->read_bit = bit; |
|
|
head->read_avail = pos; |
|
|
return false; |
|
1349 |
} |
} |
1350 |
|
|
1351 |
/** |
/** |
1352 |
* ccs_print_env_acl - Print an evironment variable name's ACL entry. |
* ccs_print_env_acl - Print an evironment variable name's ACL entry. |
1353 |
* |
* |
1354 |
* @head: Pointer to "struct ccs_io_buffer". |
* @head: Pointer to "struct ccs_io_buffer". |
1355 |
* @ptr: Pointer to "struct ccs_env_acl_record". |
* @ptr: Pointer to "struct ccs_env_acl". |
1356 |
* @cond: Pointer to "struct ccs_condition". May be NULL. |
* @cond: Pointer to "struct ccs_condition". May be NULL. |
1357 |
* |
* |
1358 |
* Returns true on success, false otherwise. |
* Returns true on success, false otherwise. |
1359 |
*/ |
*/ |
1360 |
static bool ccs_print_env_acl(struct ccs_io_buffer *head, |
static bool ccs_print_env_acl(struct ccs_io_buffer *head, |
1361 |
struct ccs_env_acl_record *ptr, |
struct ccs_env_acl *ptr, |
1362 |
const struct ccs_condition *cond) |
const struct ccs_condition *cond) |
1363 |
{ |
{ |
1364 |
int pos = head->read_avail; |
const int pos = head->read_avail; |
1365 |
if (!ccs_io_printf(head, CCS_KEYWORD_ALLOW_ENV "%s", ptr->env->name)) |
if (!ccs_io_printf(head, CCS_KEYWORD_ALLOW_ENV "%s", ptr->env->name) || |
1366 |
goto out; |
!ccs_print_condition(head, cond)) { |
1367 |
if (!ccs_print_condition(head, cond)) |
head->read_avail = pos; |
1368 |
goto out; |
return false; |
1369 |
|
} |
1370 |
return true; |
return true; |
|
out: |
|
|
head->read_avail = pos; |
|
|
return false; |
|
1371 |
} |
} |
1372 |
|
|
1373 |
/** |
/** |
1374 |
* ccs_print_capability_acl - Print a capability ACL entry. |
* ccs_print_capability_acl - Print a capability ACL entry. |
1375 |
* |
* |
1376 |
* @head: Pointer to "struct ccs_io_buffer". |
* @head: Pointer to "struct ccs_io_buffer". |
1377 |
* @ptr: Pointer to "struct ccs_capability_acl_record". |
* @ptr: Pointer to "struct ccs_capability_acl". |
1378 |
* @cond: Pointer to "struct ccs_condition". May be NULL. |
* @cond: Pointer to "struct ccs_condition". May be NULL. |
1379 |
* |
* |
1380 |
* Returns true on success, false otherwise. |
* Returns true on success, false otherwise. |
1381 |
*/ |
*/ |
1382 |
static bool ccs_print_capability_acl(struct ccs_io_buffer *head, |
static bool ccs_print_capability_acl(struct ccs_io_buffer *head, |
1383 |
struct ccs_capability_acl_record *ptr, |
struct ccs_capability_acl *ptr, |
1384 |
const struct ccs_condition *cond) |
const struct ccs_condition *cond) |
1385 |
{ |
{ |
1386 |
int pos = head->read_avail; |
const int pos = head->read_avail; |
1387 |
if (!ccs_io_printf(head, CCS_KEYWORD_ALLOW_CAPABILITY "%s", |
if (!ccs_io_printf(head, CCS_KEYWORD_ALLOW_CAPABILITY "%s", |
1388 |
ccs_cap2keyword(ptr->operation))) |
ccs_cap2keyword(ptr->operation)) || |
1389 |
goto out; |
!ccs_print_condition(head, cond)) { |
1390 |
if (!ccs_print_condition(head, cond)) |
head->read_avail = pos; |
|
goto out; |
|
|
return true; |
|
|
out: |
|
|
head->read_avail = pos; |
|
|
return false; |
|
|
} |
|
|
|
|
|
/** |
|
|
* ccs_print_ipv4_entry - Print IPv4 address of a network ACL entry. |
|
|
* |
|
|
* @head: Pointer to "struct ccs_io_buffer". |
|
|
* @ptr: Pointer to "struct ccs_ip_network_acl_record". |
|
|
* |
|
|
* Returns true on success, false otherwise. |
|
|
*/ |
|
|
static bool ccs_print_ipv4_entry(struct ccs_io_buffer *head, |
|
|
struct ccs_ip_network_acl_record *ptr) |
|
|
{ |
|
|
const u32 min_address = ptr->address.ipv4.min; |
|
|
const u32 max_address = ptr->address.ipv4.max; |
|
|
if (!ccs_io_printf(head, "%u.%u.%u.%u", HIPQUAD(min_address))) |
|
|
return false; |
|
|
if (min_address != max_address |
|
|
&& !ccs_io_printf(head, "-%u.%u.%u.%u", HIPQUAD(max_address))) |
|
|
return false; |
|
|
return true; |
|
|
} |
|
|
|
|
|
/** |
|
|
* ccs_print_ipv6_entry - Print IPv6 address of a network ACL entry. |
|
|
* |
|
|
* @head: Pointer to "struct ccs_io_buffer". |
|
|
* @ptr: Pointer to "struct ccs_ip_network_acl_record". |
|
|
* |
|
|
* Returns true on success, false otherwise. |
|
|
*/ |
|
|
static bool ccs_print_ipv6_entry(struct ccs_io_buffer *head, |
|
|
struct ccs_ip_network_acl_record *ptr) |
|
|
{ |
|
|
char buf[64]; |
|
|
const struct in6_addr *min_address = ptr->address.ipv6.min; |
|
|
const struct in6_addr *max_address = ptr->address.ipv6.max; |
|
|
ccs_print_ipv6(buf, sizeof(buf), min_address); |
|
|
if (!ccs_io_printf(head, "%s", buf)) |
|
1391 |
return false; |
return false; |
|
if (min_address != max_address) { |
|
|
ccs_print_ipv6(buf, sizeof(buf), max_address); |
|
|
if (!ccs_io_printf(head, "-%s", buf)) |
|
|
return false; |
|
1392 |
} |
} |
1393 |
return true; |
return true; |
1394 |
} |
} |
1397 |
* ccs_print_network_acl - Print a network ACL entry. |
* ccs_print_network_acl - Print a network ACL entry. |
1398 |
* |
* |
1399 |
* @head: Pointer to "struct ccs_io_buffer". |
* @head: Pointer to "struct ccs_io_buffer". |
1400 |
* @ptr: Pointer to "struct ccs_ip_network_acl_record". |
* @ptr: Pointer to "struct ccs_ip_network_acl". |
1401 |
* @cond: Pointer to "struct ccs_condition". May be NULL. |
* @cond: Pointer to "struct ccs_condition". May be NULL. |
1402 |
* |
* |
1403 |
* Returns true on success, false otherwise. |
* Returns true on success, false otherwise. |
1404 |
*/ |
*/ |
1405 |
static bool ccs_print_network_acl(struct ccs_io_buffer *head, |
static bool ccs_print_network_acl(struct ccs_io_buffer *head, |
1406 |
struct ccs_ip_network_acl_record *ptr, |
struct ccs_ip_network_acl *ptr, |
1407 |
const struct ccs_condition *cond) |
const struct ccs_condition *cond) |
1408 |
{ |
{ |
1409 |
int pos = head->read_avail; |
int pos; |
1410 |
if (!ccs_io_printf(head, CCS_KEYWORD_ALLOW_NETWORK "%s ", |
u8 bit; |
1411 |
ccs_net2keyword(ptr->operation_type))) |
const u8 perm = ptr->perm; |
1412 |
goto out; |
char buf[128]; |
1413 |
switch (ptr->record_type) { |
for (bit = head->read_bit; bit < CCS_MAX_NETWORK_OPERATION; bit++) { |
1414 |
case CCS_IP_RECORD_TYPE_ADDRESS_GROUP: |
const char *w[2] = { "", "" }; |
1415 |
if (!ccs_io_printf(head, "@%s", |
if (!(perm & (1 << bit))) |
1416 |
ptr->address.group->group_name->name)) |
continue; |
1417 |
goto out; |
pos = head->read_avail; |
1418 |
break; |
switch (ptr->address_type) { |
1419 |
case CCS_IP_RECORD_TYPE_IPv4: |
case CCS_IP_ADDRESS_TYPE_ADDRESS_GROUP: |
1420 |
if (!ccs_print_ipv4_entry(head, ptr)) |
w[0] = "@"; |
1421 |
goto out; |
w[1] = ptr->address.group->group_name->name; |
1422 |
break; |
break; |
1423 |
case CCS_IP_RECORD_TYPE_IPv6: |
case CCS_IP_ADDRESS_TYPE_IPv4: |
1424 |
if (!ccs_print_ipv6_entry(head, ptr)) |
ccs_print_ipv4(buf, sizeof(buf), ptr->address.ipv4.min, |
1425 |
|
ptr->address.ipv4.max); |
1426 |
|
w[0] = buf; |
1427 |
|
break; |
1428 |
|
case CCS_IP_ADDRESS_TYPE_IPv6: |
1429 |
|
ccs_print_ipv6(buf, sizeof(buf), ptr->address.ipv6.min, |
1430 |
|
ptr->address.ipv6.max); |
1431 |
|
w[0] = buf; |
1432 |
|
break; |
1433 |
|
} |
1434 |
|
if (!ccs_io_printf(head, CCS_KEYWORD_ALLOW_NETWORK "%s %s%s", |
1435 |
|
ccs_net2keyword(bit), w[0], w[1]) || |
1436 |
|
!ccs_print_number_union(head, &ptr->port) || |
1437 |
|
!ccs_print_condition(head, cond)) |
1438 |
goto out; |
goto out; |
|
break; |
|
1439 |
} |
} |
1440 |
if (!ccs_print_number_union(head, &ptr->port) || |
head->read_bit = 0; |
|
!ccs_print_condition(head, cond)) |
|
|
goto out; |
|
1441 |
return true; |
return true; |
1442 |
out: |
out: |
1443 |
|
head->read_bit = bit; |
1444 |
head->read_avail = pos; |
head->read_avail = pos; |
1445 |
return false; |
return false; |
1446 |
} |
} |
1449 |
* ccs_print_signal_acl - Print a signal ACL entry. |
* ccs_print_signal_acl - Print a signal ACL entry. |
1450 |
* |
* |
1451 |
* @head: Pointer to "struct ccs_io_buffer". |
* @head: Pointer to "struct ccs_io_buffer". |
1452 |
* @ptr: Pointer to "struct signale_acl_record". |
* @ptr: Pointer to "struct signale_acl". |
1453 |
* @cond: Pointer to "struct ccs_condition". May be NULL. |
* @cond: Pointer to "struct ccs_condition". May be NULL. |
1454 |
* |
* |
1455 |
* Returns true on success, false otherwise. |
* Returns true on success, false otherwise. |
1456 |
*/ |
*/ |
1457 |
static bool ccs_print_signal_acl(struct ccs_io_buffer *head, |
static bool ccs_print_signal_acl(struct ccs_io_buffer *head, |
1458 |
struct ccs_signal_acl_record *ptr, |
struct ccs_signal_acl *ptr, |
1459 |
const struct ccs_condition *cond) |
const struct ccs_condition *cond) |
1460 |
{ |
{ |
1461 |
int pos = head->read_avail; |
const int pos = head->read_avail; |
1462 |
if (!ccs_io_printf(head, CCS_KEYWORD_ALLOW_SIGNAL "%u %s", |
if (!ccs_io_printf(head, CCS_KEYWORD_ALLOW_SIGNAL "%u %s", |
1463 |
ptr->sig, ptr->domainname->name)) |
ptr->sig, ptr->domainname->name) || |
1464 |
goto out; |
!ccs_print_condition(head, cond)) { |
1465 |
if (!ccs_print_condition(head, cond)) |
head->read_avail = pos; |
1466 |
goto out; |
return false; |
1467 |
|
} |
1468 |
return true; |
return true; |
|
out: |
|
|
head->read_avail = pos; |
|
|
return false; |
|
1469 |
} |
} |
1470 |
|
|
1471 |
/** |
/** |
1472 |
* ccs_print_execute_handler_record - Print an execute handler ACL entry. |
* ccs_print_execute_handler - Print an execute handler ACL entry. |
1473 |
* |
* |
1474 |
* @head: Pointer to "struct ccs_io_buffer". |
* @head: Pointer to "struct ccs_io_buffer". |
1475 |
* @keyword: Name of the keyword. |
* @keyword: Name of the keyword. |
1476 |
* @ptr: Pointer to "struct ccs_execute_handler_record". |
* @ptr: Pointer to "struct ccs_execute_handler". |
1477 |
* |
* |
1478 |
* Returns true on success, false otherwise. |
* Returns true on success, false otherwise. |
1479 |
*/ |
*/ |
1480 |
static bool ccs_print_execute_handler_record(struct ccs_io_buffer *head, |
static bool ccs_print_execute_handler(struct ccs_io_buffer *head, |
1481 |
const char *keyword, |
const char *keyword, |
1482 |
struct ccs_execute_handler_record * |
struct ccs_execute_handler *ptr) |
|
ptr) |
|
1483 |
{ |
{ |
1484 |
return ccs_io_printf(head, "%s %s\n", keyword, ptr->handler->name); |
return ccs_io_printf(head, "%s %s\n", keyword, ptr->handler->name); |
1485 |
} |
} |
1488 |
* ccs_print_mount_acl - Print a mount ACL entry. |
* ccs_print_mount_acl - Print a mount ACL entry. |
1489 |
* |
* |
1490 |
* @head: Pointer to "struct ccs_io_buffer". |
* @head: Pointer to "struct ccs_io_buffer". |
1491 |
* @ptr: Pointer to "struct ccs_mount_acl_record". |
* @ptr: Pointer to "struct ccs_mount_acl". |
1492 |
* @cond: Pointer to "struct ccs_condition". May be NULL. |
* @cond: Pointer to "struct ccs_condition". May be NULL. |
1493 |
* |
* |
1494 |
* Returns true on success, false otherwise. |
* Returns true on success, false otherwise. |
1495 |
*/ |
*/ |
1496 |
static bool ccs_print_mount_acl(struct ccs_io_buffer *head, |
static bool ccs_print_mount_acl(struct ccs_io_buffer *head, |
1497 |
struct ccs_mount_acl_record *ptr, |
struct ccs_mount_acl *ptr, |
1498 |
const struct ccs_condition *cond) |
const struct ccs_condition *cond) |
1499 |
{ |
{ |
1500 |
int pos = head->read_avail; |
const int pos = head->read_avail; |
1501 |
if (!ccs_io_printf(head, CCS_KEYWORD_ALLOW_MOUNT "%s %s %s 0x%lX\n", |
if (!ccs_io_printf(head, CCS_KEYWORD_ALLOW_MOUNT) || |
1502 |
ptr->dev_name->name, ptr->dir_name->name, |
!ccs_print_name_union(head, &ptr->dev_name) || |
1503 |
ptr->fs_type->name, ptr->flags)) |
!ccs_print_name_union(head, &ptr->dir_name) || |
1504 |
goto out; |
!ccs_print_name_union(head, &ptr->fs_type) || |
1505 |
if (!ccs_print_condition(head, cond)) |
!ccs_print_number_union(head, &ptr->flags) || |
1506 |
goto out; |
!ccs_print_condition(head, cond)) { |
1507 |
return true; |
head->read_avail = pos; |
1508 |
out: |
return false; |
1509 |
head->read_avail = pos; |
} |
|
return false; |
|
|
} |
|
|
|
|
|
/** |
|
|
* ccs_print_umount_acl - Print a mount ACL entry. |
|
|
* |
|
|
* @head: Pointer to "struct ccs_io_buffer". |
|
|
* @ptr: Pointer to "struct ccs_umount_acl_record". |
|
|
* @cond: Pointer to "struct ccs_condition". May be NULL. |
|
|
* |
|
|
* Returns true on success, false otherwise. |
|
|
*/ |
|
|
static bool ccs_print_umount_acl(struct ccs_io_buffer *head, |
|
|
struct ccs_umount_acl_record *ptr, |
|
|
const struct ccs_condition *cond) |
|
|
{ |
|
|
int pos = head->read_avail; |
|
|
if (!ccs_io_printf(head, CCS_KEYWORD_ALLOW_UNMOUNT "%s\n", |
|
|
ptr->dir->name)) |
|
|
goto out; |
|
|
if (!ccs_print_condition(head, cond)) |
|
|
goto out; |
|
|
return true; |
|
|
out: |
|
|
head->read_avail = pos; |
|
|
return false; |
|
|
} |
|
|
|
|
|
/** |
|
|
* ccs_print_chroot_acl - Print a chroot ACL entry. |
|
|
* |
|
|
* @head: Pointer to "struct ccs_io_buffer". |
|
|
* @ptr: Pointer to "struct ccs_chroot_acl_record". |
|
|
* @cond: Pointer to "struct ccs_condition". May be NULL. |
|
|
* |
|
|
* Returns true on success, false otherwise. |
|
|
*/ |
|
|
static bool ccs_print_chroot_acl(struct ccs_io_buffer *head, |
|
|
struct ccs_chroot_acl_record *ptr, |
|
|
const struct ccs_condition *cond) |
|
|
{ |
|
|
int pos = head->read_avail; |
|
|
if (!ccs_io_printf(head, CCS_KEYWORD_ALLOW_CHROOT "%s\n", |
|
|
ptr->dir->name)) |
|
|
goto out; |
|
|
if (!ccs_print_condition(head, cond)) |
|
|
goto out; |
|
|
return true; |
|
|
out: |
|
|
head->read_avail = pos; |
|
|
return false; |
|
|
} |
|
|
|
|
|
/** |
|
|
* ccs_print_pivot_root_acl - Print a pivot_root ACL entry. |
|
|
* |
|
|
* @head: Pointer to "struct ccs_io_buffer". |
|
|
* @ptr: Pointer to "struct ccs_pivot_root_acl_record". |
|
|
* @cond: Pointer to "struct ccs_condition". May be NULL. |
|
|
* |
|
|
* Returns true on success, false otherwise. |
|
|
*/ |
|
|
static bool ccs_print_pivot_root_acl(struct ccs_io_buffer *head, |
|
|
struct ccs_pivot_root_acl_record *ptr, |
|
|
const struct ccs_condition *cond) |
|
|
{ |
|
|
int pos = head->read_avail; |
|
|
if (!ccs_io_printf(head, CCS_KEYWORD_ALLOW_PIVOT_ROOT "%s %s\n", |
|
|
ptr->new_root->name, ptr->old_root->name)) |
|
|
goto out; |
|
|
if (!ccs_print_condition(head, cond)) |
|
|
goto out; |
|
1510 |
return true; |
return true; |
|
out: |
|
|
head->read_avail = pos; |
|
|
return false; |
|
1511 |
} |
} |
1512 |
|
|
1513 |
/** |
/** |
1522 |
struct ccs_acl_info *ptr) |
struct ccs_acl_info *ptr) |
1523 |
{ |
{ |
1524 |
const struct ccs_condition *cond = ptr->cond; |
const struct ccs_condition *cond = ptr->cond; |
1525 |
const u8 acl_type = ccs_acl_type2(ptr); |
const u8 acl_type = ptr->type; |
1526 |
if (acl_type & CCS_ACL_DELETED) |
if (ptr->is_deleted) |
1527 |
return true; |
return true; |
1528 |
if (acl_type == CCS_TYPE_SINGLE_PATH_ACL) { |
if (acl_type == CCS_TYPE_PATH_ACL) { |
1529 |
struct ccs_single_path_acl_record *acl |
struct ccs_path_acl *acl |
1530 |
= container_of(ptr, struct ccs_single_path_acl_record, |
= container_of(ptr, struct ccs_path_acl, head); |
1531 |
head); |
return ccs_print_path_acl(head, acl, cond); |
1532 |
return ccs_print_single_path_acl(head, acl, cond); |
} |
1533 |
} |
if (acl_type == CCS_TYPE_EXECUTE_HANDLER || |
1534 |
if (acl_type == CCS_TYPE_EXECUTE_HANDLER) { |
acl_type == CCS_TYPE_DENIED_EXECUTE_HANDLER) { |
1535 |
struct ccs_execute_handler_record *acl |
struct ccs_execute_handler *acl |
1536 |
= container_of(ptr, struct ccs_execute_handler_record, |
= container_of(ptr, struct ccs_execute_handler, head); |
1537 |
head); |
const char *keyword = acl_type == CCS_TYPE_EXECUTE_HANDLER ? |
1538 |
const char *keyword = CCS_KEYWORD_EXECUTE_HANDLER; |
CCS_KEYWORD_EXECUTE_HANDLER : |
1539 |
return ccs_print_execute_handler_record(head, keyword, acl); |
CCS_KEYWORD_DENIED_EXECUTE_HANDLER; |
1540 |
} |
return ccs_print_execute_handler(head, keyword, acl); |
|
if (acl_type == CCS_TYPE_DENIED_EXECUTE_HANDLER) { |
|
|
struct ccs_execute_handler_record *acl |
|
|
= container_of(ptr, struct ccs_execute_handler_record, |
|
|
head); |
|
|
const char *keyword = CCS_KEYWORD_DENIED_EXECUTE_HANDLER; |
|
|
return ccs_print_execute_handler_record(head, keyword, acl); |
|
1541 |
} |
} |
1542 |
if (head->read_execute_only) |
if (head->read_execute_only) |
1543 |
return true; |
return true; |
1544 |
if (acl_type == CCS_TYPE_MKDEV_ACL) { |
if (acl_type == CCS_TYPE_PATH_NUMBER3_ACL) { |
1545 |
struct ccs_mkdev_acl_record *acl |
struct ccs_path_number3_acl *acl |
1546 |
= container_of(ptr, struct ccs_mkdev_acl_record, head); |
= container_of(ptr, struct ccs_path_number3_acl, head); |
1547 |
return ccs_print_mkdev_acl(head, acl, cond); |
return ccs_print_path_number3_acl(head, acl, cond); |
1548 |
} |
} |
1549 |
if (acl_type == CCS_TYPE_DOUBLE_PATH_ACL) { |
if (acl_type == CCS_TYPE_PATH2_ACL) { |
1550 |
struct ccs_double_path_acl_record *acl |
struct ccs_path2_acl *acl |
1551 |
= container_of(ptr, struct ccs_double_path_acl_record, |
= container_of(ptr, struct ccs_path2_acl, head); |
1552 |
head); |
return ccs_print_path2_acl(head, acl, cond); |
|
return ccs_print_double_path_acl(head, acl, cond); |
|
1553 |
} |
} |
1554 |
if (acl_type == CCS_TYPE_PATH_NUMBER_ACL) { |
if (acl_type == CCS_TYPE_PATH_NUMBER_ACL) { |
1555 |
struct ccs_path_number_acl_record *acl |
struct ccs_path_number_acl *acl |
1556 |
= container_of(ptr, struct ccs_path_number_acl_record, |
= container_of(ptr, struct ccs_path_number_acl, head); |
|
head); |
|
1557 |
return ccs_print_path_number_acl(head, acl, cond); |
return ccs_print_path_number_acl(head, acl, cond); |
1558 |
} |
} |
1559 |
if (acl_type == CCS_TYPE_ENV_ACL) { |
if (acl_type == CCS_TYPE_ENV_ACL) { |
1560 |
struct ccs_env_acl_record *acl |
struct ccs_env_acl *acl |
1561 |
= container_of(ptr, struct ccs_env_acl_record, head); |
= container_of(ptr, struct ccs_env_acl, head); |
1562 |
return ccs_print_env_acl(head, acl, cond); |
return ccs_print_env_acl(head, acl, cond); |
1563 |
} |
} |
1564 |
if (acl_type == CCS_TYPE_CAPABILITY_ACL) { |
if (acl_type == CCS_TYPE_CAPABILITY_ACL) { |
1565 |
struct ccs_capability_acl_record *acl |
struct ccs_capability_acl *acl |
1566 |
= container_of(ptr, struct ccs_capability_acl_record, |
= container_of(ptr, struct ccs_capability_acl, head); |
|
head); |
|
1567 |
return ccs_print_capability_acl(head, acl, cond); |
return ccs_print_capability_acl(head, acl, cond); |
1568 |
} |
} |
1569 |
if (acl_type == CCS_TYPE_IP_NETWORK_ACL) { |
if (acl_type == CCS_TYPE_IP_NETWORK_ACL) { |
1570 |
struct ccs_ip_network_acl_record *acl |
struct ccs_ip_network_acl *acl |
1571 |
= container_of(ptr, struct ccs_ip_network_acl_record, |
= container_of(ptr, struct ccs_ip_network_acl, head); |
|
head); |
|
1572 |
return ccs_print_network_acl(head, acl, cond); |
return ccs_print_network_acl(head, acl, cond); |
1573 |
} |
} |
1574 |
if (acl_type == CCS_TYPE_SIGNAL_ACL) { |
if (acl_type == CCS_TYPE_SIGNAL_ACL) { |
1575 |
struct ccs_signal_acl_record *acl |
struct ccs_signal_acl *acl |
1576 |
= container_of(ptr, struct ccs_signal_acl_record, head); |
= container_of(ptr, struct ccs_signal_acl, head); |
1577 |
return ccs_print_signal_acl(head, acl, cond); |
return ccs_print_signal_acl(head, acl, cond); |
1578 |
} |
} |
1579 |
if (acl_type == CCS_TYPE_MOUNT_ACL) { |
if (acl_type == CCS_TYPE_MOUNT_ACL) { |
1580 |
struct ccs_mount_acl_record *acl |
struct ccs_mount_acl *acl |
1581 |
= container_of(ptr, struct ccs_mount_acl_record, head); |
= container_of(ptr, struct ccs_mount_acl, head); |
1582 |
return ccs_print_mount_acl(head, acl, cond); |
return ccs_print_mount_acl(head, acl, cond); |
1583 |
} |
} |
|
if (acl_type == CCS_TYPE_UMOUNT_ACL) { |
|
|
struct ccs_umount_acl_record *acl |
|
|
= container_of(ptr, struct ccs_umount_acl_record, head); |
|
|
return ccs_print_umount_acl(head, acl, cond); |
|
|
} |
|
|
if (acl_type == CCS_TYPE_CHROOT_ACL) { |
|
|
struct ccs_chroot_acl_record *acl |
|
|
= container_of(ptr, struct ccs_chroot_acl_record, head); |
|
|
return ccs_print_chroot_acl(head, acl, cond); |
|
|
} |
|
|
if (acl_type == CCS_TYPE_PIVOT_ROOT_ACL) { |
|
|
struct ccs_pivot_root_acl_record *acl |
|
|
= container_of(ptr, struct ccs_pivot_root_acl_record, |
|
|
head); |
|
|
return ccs_print_pivot_root_acl(head, acl, cond); |
|
|
} |
|
|
/* Workaround for gcc 3.2.2's inline bug. */ |
|
|
if (acl_type & CCS_ACL_DELETED) |
|
|
return true; |
|
1584 |
BUG(); /* This must not happen. */ |
BUG(); /* This must not happen. */ |
1585 |
return false; |
return false; |
1586 |
} |
} |
1587 |
|
|
1588 |
/** |
/** |
1589 |
* ccs_read_domain_policy - Read domain policy. |
* ccs_read_domain2 - Read domain policy. |
1590 |
* |
* |
1591 |
* @head: Pointer to "struct ccs_io_buffer". |
* @head: Pointer to "struct ccs_io_buffer". |
1592 |
|
* @domain: Pointer to "struct ccs_domain_info". |
1593 |
* |
* |
1594 |
* Returns 0. |
* Caller holds ccs_read_lock(). |
1595 |
|
* |
1596 |
|
* Returns true on success, false otherwise. |
1597 |
|
*/ |
1598 |
|
static bool ccs_read_domain2(struct ccs_io_buffer *head, |
1599 |
|
struct ccs_domain_info *domain) |
1600 |
|
{ |
1601 |
|
struct list_head *pos; |
1602 |
|
/* Print ACL entries in the domain. */ |
1603 |
|
list_for_each_cookie(pos, head->read_var2, &domain->acl_info_list) { |
1604 |
|
struct ccs_acl_info *ptr |
1605 |
|
= list_entry(pos, struct ccs_acl_info, list); |
1606 |
|
if (!ccs_print_entry(head, ptr)) |
1607 |
|
return false; |
1608 |
|
} |
1609 |
|
return true; |
1610 |
|
} |
1611 |
|
|
1612 |
|
/** |
1613 |
|
* ccs_read_domain - Read domain policy. |
1614 |
|
* |
1615 |
|
* @head: Pointer to "struct ccs_io_buffer". |
1616 |
* |
* |
1617 |
* Caller holds ccs_read_lock(). |
* Caller holds ccs_read_lock(). |
1618 |
*/ |
*/ |
1619 |
static int ccs_read_domain_policy(struct ccs_io_buffer *head) |
static void ccs_read_domain(struct ccs_io_buffer *head) |
1620 |
{ |
{ |
1621 |
struct list_head *dpos; |
struct list_head *pos; |
|
struct list_head *apos; |
|
|
ccs_check_read_lock(); |
|
1622 |
if (head->read_eof) |
if (head->read_eof) |
1623 |
return 0; |
return; |
1624 |
if (head->read_step == 0) |
list_for_each_cookie(pos, head->read_var1, &ccs_domain_list) { |
1625 |
head->read_step = 1; |
struct ccs_domain_info *domain = |
1626 |
list_for_each_cookie(dpos, head->read_var1, &ccs_domain_list) { |
list_entry(pos, struct ccs_domain_info, list); |
1627 |
struct ccs_domain_info *domain; |
const char *w[4] = { "", "", "", "" }; |
1628 |
const char *quota_exceeded = ""; |
switch (head->read_step) { |
1629 |
const char *transition_failed = ""; |
case 0: |
1630 |
const char *ignore_global_allow_read = ""; |
if (domain->is_deleted && !head->read_single_domain) |
1631 |
const char *ignore_global_allow_env = ""; |
continue; |
1632 |
domain = list_entry(dpos, struct ccs_domain_info, list); |
/* Print domainname and flags. */ |
1633 |
if (head->read_step != 1) |
if (domain->quota_warned) |
1634 |
goto acl_loop; |
w[0] = CCS_KEYWORD_QUOTA_EXCEEDED "\n"; |
1635 |
if (domain->is_deleted && !head->read_single_domain) |
if (domain->domain_transition_failed) |
1636 |
continue; |
w[1] = CCS_KEYWORD_TRANSITION_FAILED "\n"; |
1637 |
/* Print domainname and flags. */ |
if (domain->ignore_global_allow_read) |
1638 |
if (domain->quota_warned) |
w[2] = CCS_KEYWORD_IGNORE_GLOBAL_ALLOW_READ |
1639 |
quota_exceeded = "quota_exceeded\n"; |
"\n"; |
1640 |
if (domain->domain_transition_failed) |
if (domain->ignore_global_allow_env) |
1641 |
transition_failed = "transition_failed\n"; |
w[3] = CCS_KEYWORD_IGNORE_GLOBAL_ALLOW_ENV |
1642 |
if (domain->ignore_global_allow_read) |
"\n"; |
1643 |
ignore_global_allow_read |
if (!ccs_io_printf(head, "%s\n" CCS_KEYWORD_USE_PROFILE |
1644 |
= CCS_KEYWORD_IGNORE_GLOBAL_ALLOW_READ "\n"; |
"%u\n%s%s%s%s\n", |
1645 |
if (domain->ignore_global_allow_env) |
domain->domainname->name, |
1646 |
ignore_global_allow_env |
domain->profile, w[0], w[1], w[2], |
1647 |
= CCS_KEYWORD_IGNORE_GLOBAL_ALLOW_ENV "\n"; |
w[3])) |
1648 |
if (!ccs_io_printf(head, "%s\n" CCS_KEYWORD_USE_PROFILE "%u\n" |
return; |
1649 |
"%s%s%s%s\n", domain->domainname->name, |
head->read_step++; |
1650 |
domain->profile, quota_exceeded, |
/* fall through */ |
1651 |
transition_failed, |
case 1: |
1652 |
ignore_global_allow_read, |
if (!ccs_read_domain2(head, domain)) |
1653 |
ignore_global_allow_env)) |
return; |
1654 |
return 0; |
head->read_step++; |
1655 |
head->read_step = 2; |
/* fall through */ |
1656 |
acl_loop: |
case 2: |
1657 |
if (head->read_step == 3) |
if (!ccs_io_printf(head, "\n")) |
1658 |
goto tail_mark; |
return; |
1659 |
/* Print ACL entries in the domain. */ |
head->read_step = 0; |
1660 |
list_for_each_cookie(apos, head->read_var2, |
if (head->read_single_domain) |
1661 |
&domain->acl_info_list) { |
goto out; |
1662 |
struct ccs_acl_info *ptr |
} |
|
= list_entry(apos, struct ccs_acl_info, list); |
|
|
if (!ccs_print_entry(head, ptr)) |
|
|
return 0; |
|
|
} |
|
|
head->read_step = 3; |
|
|
tail_mark: |
|
|
if (!ccs_io_printf(head, "\n")) |
|
|
return 0; |
|
|
head->read_step = 1; |
|
|
if (head->read_single_domain) |
|
|
break; |
|
1663 |
} |
} |
1664 |
|
out: |
1665 |
head->read_eof = true; |
head->read_eof = true; |
|
return 0; |
|
1666 |
} |
} |
1667 |
|
|
1668 |
/** |
/** |
1675 |
* This is equivalent to doing |
* This is equivalent to doing |
1676 |
* |
* |
1677 |
* ( echo "select " $domainname; echo "use_profile " $profile ) | |
* ( echo "select " $domainname; echo "use_profile " $profile ) | |
1678 |
* /usr/lib/ccs/loadpolicy -d |
* /usr/sbin/ccs-loadpolicy -d |
1679 |
* |
* |
1680 |
* Caller holds ccs_read_lock(). |
* Caller holds ccs_read_lock(). |
1681 |
*/ |
*/ |
1685 |
char *cp = strchr(data, ' '); |
char *cp = strchr(data, ' '); |
1686 |
struct ccs_domain_info *domain; |
struct ccs_domain_info *domain; |
1687 |
unsigned int profile; |
unsigned int profile; |
|
ccs_check_read_lock(); |
|
1688 |
if (!cp) |
if (!cp) |
1689 |
return -EINVAL; |
return -EINVAL; |
1690 |
*cp = '\0'; |
*cp = '\0'; |
1692 |
if (profile >= CCS_MAX_PROFILES) |
if (profile >= CCS_MAX_PROFILES) |
1693 |
return -EINVAL; |
return -EINVAL; |
1694 |
domain = ccs_find_domain(cp + 1); |
domain = ccs_find_domain(cp + 1); |
1695 |
if (domain && (ccs_profile_ptr[profile] || !ccs_policy_loaded)) |
if (domain && (!ccs_policy_loaded || ccs_profile_ptr[(u8) profile])) |
1696 |
domain->profile = (u8) profile; |
domain->profile = (u8) profile; |
1697 |
return 0; |
return 0; |
1698 |
} |
} |
1702 |
* |
* |
1703 |
* @head: Pointer to "struct ccs_io_buffer". |
* @head: Pointer to "struct ccs_io_buffer". |
1704 |
* |
* |
|
* Returns list of profile number and domainname pairs. |
|
|
* |
|
1705 |
* This is equivalent to doing |
* This is equivalent to doing |
1706 |
* |
* |
1707 |
* grep -A 1 '^<kernel>' /proc/ccs/domain_policy | |
* grep -A 1 '^<kernel>' /proc/ccs/domain_policy | |
1711 |
* |
* |
1712 |
* Caller holds ccs_read_lock(). |
* Caller holds ccs_read_lock(). |
1713 |
*/ |
*/ |
1714 |
static int ccs_read_domain_profile(struct ccs_io_buffer *head) |
static void ccs_read_domain_profile(struct ccs_io_buffer *head) |
1715 |
{ |
{ |
1716 |
struct list_head *pos; |
struct list_head *pos; |
|
ccs_check_read_lock(); |
|
1717 |
if (head->read_eof) |
if (head->read_eof) |
1718 |
return 0; |
return; |
1719 |
list_for_each_cookie(pos, head->read_var1, &ccs_domain_list) { |
list_for_each_cookie(pos, head->read_var1, &ccs_domain_list) { |
1720 |
struct ccs_domain_info *domain; |
struct ccs_domain_info *domain; |
1721 |
domain = list_entry(pos, struct ccs_domain_info, list); |
domain = list_entry(pos, struct ccs_domain_info, list); |
1723 |
continue; |
continue; |
1724 |
if (!ccs_io_printf(head, "%u %s\n", domain->profile, |
if (!ccs_io_printf(head, "%u %s\n", domain->profile, |
1725 |
domain->domainname->name)) |
domain->domainname->name)) |
1726 |
return 0; |
return; |
1727 |
} |
} |
1728 |
head->read_eof = true; |
head->read_eof = true; |
|
return 0; |
|
1729 |
} |
} |
1730 |
|
|
1731 |
/** |
/** |
1752 |
* |
* |
1753 |
* Caller holds ccs_read_lock(). |
* Caller holds ccs_read_lock(). |
1754 |
*/ |
*/ |
1755 |
static int ccs_read_pid(struct ccs_io_buffer *head) |
static void ccs_read_pid(struct ccs_io_buffer *head) |
1756 |
{ |
{ |
1757 |
char *buf = head->write_buf; |
char *buf = head->write_buf; |
1758 |
bool task_info = false; |
bool task_info = false; |
1759 |
|
bool global_pid = false; |
1760 |
unsigned int pid; |
unsigned int pid; |
1761 |
struct task_struct *p; |
struct task_struct *p; |
1762 |
struct ccs_domain_info *domain = NULL; |
struct ccs_domain_info *domain = NULL; |
1763 |
u32 ccs_flags = 0; |
u32 ccs_flags = 0; |
|
ccs_check_read_lock(); |
|
1764 |
/* Accessing write_buf is safe because head->io_sem is held. */ |
/* Accessing write_buf is safe because head->io_sem is held. */ |
1765 |
if (!buf) |
if (!buf) { |
1766 |
goto done; /* Do nothing if open(O_RDONLY). */ |
head->read_eof = true; |
1767 |
|
return; /* Do nothing if open(O_RDONLY). */ |
1768 |
|
} |
1769 |
if (head->read_avail || head->read_eof) |
if (head->read_avail || head->read_eof) |
1770 |
goto done; |
return; |
1771 |
head->read_eof = true; |
head->read_eof = true; |
1772 |
if (ccs_str_starts(&buf, "info ")) |
if (ccs_str_starts(&buf, "info ")) |
1773 |
task_info = true; |
task_info = true; |
1774 |
|
if (ccs_str_starts(&buf, "global-pid ")) |
1775 |
|
global_pid = true; |
1776 |
pid = (unsigned int) simple_strtoul(buf, NULL, 10); |
pid = (unsigned int) simple_strtoul(buf, NULL, 10); |
1777 |
/***** CRITICAL SECTION START *****/ |
ccs_tasklist_lock(); |
1778 |
read_lock(&tasklist_lock); |
#if LINUX_VERSION_CODE >= KERNEL_VERSION(2, 6, 24) |
1779 |
|
if (global_pid) |
1780 |
|
p = ccsecurity_exports.find_task_by_pid_ns(pid, &init_pid_ns); |
1781 |
|
else |
1782 |
|
p = ccsecurity_exports.find_task_by_vpid(pid); |
1783 |
|
#else |
1784 |
p = find_task_by_pid(pid); |
p = find_task_by_pid(pid); |
1785 |
|
#endif |
1786 |
if (p) { |
if (p) { |
1787 |
domain = ccs_task_domain(p); |
domain = ccs_task_domain(p); |
1788 |
ccs_flags = p->ccs_flags; |
ccs_flags = p->ccs_flags; |
1789 |
} |
} |
1790 |
read_unlock(&tasklist_lock); |
ccs_tasklist_unlock(); |
|
/***** CRITICAL SECTION END *****/ |
|
1791 |
if (!domain) |
if (!domain) |
1792 |
goto done; |
return; |
1793 |
if (!task_info) |
if (!task_info) |
1794 |
ccs_io_printf(head, "%u %u %s", pid, domain->profile, |
ccs_io_printf(head, "%u %u %s", pid, domain->profile, |
1795 |
domain->domainname->name); |
domain->domainname->name); |
1796 |
else |
else |
1797 |
ccs_io_printf(head, "%u manager=%s execute_handler=%s " |
ccs_io_printf(head, "%u manager=%s execute_handler=%s " |
1798 |
"state[0]=%u state[1]=%u state[2]=%u", pid, |
"state[0]=%u state[1]=%u state[2]=%u", pid, |
1799 |
ccs_flags & CCS_TASK_IS_POLICY_MANAGER ? |
ccs_yesno(ccs_flags & |
1800 |
"yes" : "no", |
CCS_TASK_IS_MANAGER), |
1801 |
ccs_flags & CCS_TASK_IS_EXECUTE_HANDLER ? |
ccs_yesno(ccs_flags & |
1802 |
"yes" : "no", |
CCS_TASK_IS_EXECUTE_HANDLER), |
1803 |
(u8) (ccs_flags >> 24), |
(u8) (ccs_flags >> 24), |
1804 |
(u8) (ccs_flags >> 16), |
(u8) (ccs_flags >> 16), |
1805 |
(u8) (ccs_flags >> 8)); |
(u8) (ccs_flags >> 8)); |
|
done: |
|
|
return 0; |
|
1806 |
} |
} |
1807 |
|
|
1808 |
/** |
/** |
1809 |
* ccs_write_exception_policy - Write exception policy. |
* ccs_write_exception - Write exception policy. |
1810 |
* |
* |
1811 |
* @head: Pointer to "struct ccs_io_buffer". |
* @head: Pointer to "struct ccs_io_buffer". |
1812 |
* |
* |
1813 |
* Returns 0 on success, negative value otherwise. |
* Returns 0 on success, negative value otherwise. |
1814 |
*/ |
*/ |
1815 |
static int ccs_write_exception_policy(struct ccs_io_buffer *head) |
static int ccs_write_exception(struct ccs_io_buffer *head) |
1816 |
{ |
{ |
1817 |
char *data = head->write_buf; |
char *data = head->write_buf; |
1818 |
bool is_delete = ccs_str_starts(&data, CCS_KEYWORD_DELETE); |
const bool is_delete = ccs_str_starts(&data, CCS_KEYWORD_DELETE); |
1819 |
if (ccs_str_starts(&data, CCS_KEYWORD_KEEP_DOMAIN)) |
u8 i; |
1820 |
return ccs_write_domain_keeper_policy(data, false, is_delete); |
static const struct { |
1821 |
if (ccs_str_starts(&data, CCS_KEYWORD_NO_KEEP_DOMAIN)) |
const char *keyword; |
1822 |
return ccs_write_domain_keeper_policy(data, true, is_delete); |
int (*write) (char *, const bool, const u8); |
1823 |
if (ccs_str_starts(&data, CCS_KEYWORD_INITIALIZE_DOMAIN)) |
} ccs_callback[8] = { |
1824 |
return ccs_write_domain_initializer_policy(data, false, |
{ CCS_KEYWORD_NO_KEEP_DOMAIN, ccs_write_domain_keeper }, |
1825 |
is_delete); |
{ CCS_KEYWORD_NO_INITIALIZE_DOMAIN, |
1826 |
if (ccs_str_starts(&data, CCS_KEYWORD_NO_INITIALIZE_DOMAIN)) |
ccs_write_domain_initializer }, |
1827 |
return ccs_write_domain_initializer_policy(data, true, |
{ CCS_KEYWORD_KEEP_DOMAIN, ccs_write_domain_keeper }, |
1828 |
is_delete); |
{ CCS_KEYWORD_INITIALIZE_DOMAIN, |
1829 |
if (ccs_str_starts(&data, CCS_KEYWORD_AGGREGATOR)) |
ccs_write_domain_initializer }, |
1830 |
return ccs_write_aggregator_policy(data, is_delete); |
{ CCS_KEYWORD_AGGREGATOR, ccs_write_aggregator }, |
1831 |
if (ccs_str_starts(&data, CCS_KEYWORD_ALLOW_READ)) |
{ CCS_KEYWORD_FILE_PATTERN, ccs_write_pattern }, |
1832 |
return ccs_write_globally_readable_policy(data, is_delete); |
{ CCS_KEYWORD_DENY_REWRITE, ccs_write_no_rewrite }, |
1833 |
if (ccs_str_starts(&data, CCS_KEYWORD_ALLOW_ENV)) |
{ CCS_KEYWORD_DENY_AUTOBIND, ccs_write_reserved_port } |
1834 |
return ccs_write_globally_usable_env_policy(data, is_delete); |
}; |
1835 |
if (ccs_str_starts(&data, CCS_KEYWORD_FILE_PATTERN)) |
static const char *ccs_name[CCS_MAX_GROUP] = { |
1836 |
return ccs_write_pattern_policy(data, is_delete); |
[CCS_PATH_GROUP] = CCS_KEYWORD_PATH_GROUP, |
1837 |
if (ccs_str_starts(&data, CCS_KEYWORD_PATH_GROUP)) |
[CCS_NUMBER_GROUP] = CCS_KEYWORD_NUMBER_GROUP, |
1838 |
return ccs_write_path_group_policy(data, is_delete); |
[CCS_ADDRESS_GROUP] = CCS_KEYWORD_ADDRESS_GROUP |
1839 |
if (ccs_str_starts(&data, CCS_KEYWORD_NUMBER_GROUP)) |
}; |
1840 |
return ccs_write_number_group_policy(data, is_delete); |
for (i = 0; i < 10; i++) { |
1841 |
if (ccs_str_starts(&data, CCS_KEYWORD_DENY_REWRITE)) |
if (ccs_str_starts(&data, ccs_callback[i].keyword)) |
1842 |
return ccs_write_no_rewrite_policy(data, is_delete); |
return ccs_callback[i].write(data, is_delete, i < 2); |
1843 |
if (ccs_str_starts(&data, CCS_KEYWORD_ADDRESS_GROUP)) |
} |
1844 |
return ccs_write_address_group_policy(data, is_delete); |
for (i = 0; i < CCS_MAX_GROUP; i++) { |
1845 |
if (ccs_str_starts(&data, CCS_KEYWORD_DENY_AUTOBIND)) |
if (ccs_str_starts(&data, ccs_name[i])) |
1846 |
return ccs_write_reserved_port_policy(data, is_delete); |
return ccs_write_group(data, is_delete, i); |
1847 |
return -EINVAL; |
} |
1848 |
|
{ |
1849 |
|
int error; |
1850 |
|
struct ccs_condition *cond = NULL; |
1851 |
|
char *cp = ccs_find_condition_part(data); |
1852 |
|
if (cp) { |
1853 |
|
cond = ccs_get_condition(cp); |
1854 |
|
if (!cond) |
1855 |
|
return -EINVAL; |
1856 |
|
} |
1857 |
|
error = ccs_write_domain2(data, &ccs_global_domain, cond, |
1858 |
|
is_delete); |
1859 |
|
if (cond) |
1860 |
|
ccs_put_condition(cond); |
1861 |
|
return error; |
1862 |
|
} |
1863 |
} |
} |
1864 |
|
|
1865 |
/** |
/** |
1866 |
* ccs_read_exception_policy - Read exception policy. |
* ccs_read_group - Read "struct ccs_path_group"/"struct ccs_number_group"/"struct ccs_address_group" list. |
1867 |
* |
* |
1868 |
* @head: Pointer to "struct ccs_io_buffer". |
* @head: Pointer to "struct ccs_io_buffer". |
1869 |
|
* @idx: Index number. |
1870 |
* |
* |
1871 |
* Returns 0 on success, -EINVAL otherwise. |
* Returns true on success, false otherwise. |
1872 |
* |
* |
1873 |
* Caller holds ccs_read_lock(). |
* Caller holds ccs_read_lock(). |
1874 |
*/ |
*/ |
1875 |
static int ccs_read_exception_policy(struct ccs_io_buffer *head) |
static bool ccs_read_group(struct ccs_io_buffer *head, const int idx) |
1876 |
{ |
{ |
1877 |
ccs_check_read_lock(); |
struct list_head *gpos; |
1878 |
if (!head->read_eof) { |
struct list_head *mpos; |
1879 |
switch (head->read_step) { |
const char *w[3] = { "", "", "" }; |
1880 |
case 0: |
if (idx == CCS_PATH_GROUP) |
1881 |
head->read_var2 = NULL; |
w[0] = CCS_KEYWORD_PATH_GROUP; |
1882 |
head->read_step = 1; |
else if (idx == CCS_NUMBER_GROUP) |
1883 |
case 1: |
w[0] = CCS_KEYWORD_NUMBER_GROUP; |
1884 |
if (!ccs_read_domain_keeper_policy(head)) |
else if (idx == CCS_ADDRESS_GROUP) |
1885 |
break; |
w[0] = CCS_KEYWORD_ADDRESS_GROUP; |
1886 |
head->read_var2 = NULL; |
list_for_each_cookie(gpos, head->read_var1, &ccs_group_list[idx]) { |
1887 |
head->read_step = 2; |
struct ccs_group *group = |
1888 |
case 2: |
list_entry(gpos, struct ccs_group, head.list); |
1889 |
if (!ccs_read_globally_readable_policy(head)) |
w[1] = group->group_name->name; |
1890 |
break; |
list_for_each_cookie(mpos, head->read_var2, |
1891 |
head->read_var2 = NULL; |
&group->member_list) { |
1892 |
head->read_step = 3; |
char buffer[128]; |
1893 |
case 3: |
struct ccs_acl_head *ptr = |
1894 |
if (!ccs_read_globally_usable_env_policy(head)) |
list_entry(mpos, struct ccs_acl_head, list); |
1895 |
break; |
if (ptr->is_deleted) |
1896 |
head->read_var2 = NULL; |
continue; |
1897 |
head->read_step = 4; |
if (idx == CCS_PATH_GROUP) { |
1898 |
case 4: |
w[2] = container_of(ptr, struct ccs_path_group, |
1899 |
if (!ccs_read_domain_initializer_policy(head)) |
head)->member_name->name; |
1900 |
break; |
} else if (idx == CCS_NUMBER_GROUP) { |
1901 |
head->read_var2 = NULL; |
w[2] = buffer; |
1902 |
head->read_step = 6; |
ccs_print_number(buffer, sizeof(buffer), |
1903 |
case 6: |
&container_of |
1904 |
if (!ccs_read_aggregator_policy(head)) |
(ptr, struct ccs_number_group, |
1905 |
break; |
head)->number); |
1906 |
head->read_var2 = NULL; |
} else if (idx == CCS_ADDRESS_GROUP) { |
1907 |
head->read_step = 7; |
struct ccs_address_group *member = |
1908 |
case 7: |
container_of(ptr, typeof(*member), |
1909 |
if (!ccs_read_file_pattern(head)) |
head); |
1910 |
break; |
w[2] = buffer; |
1911 |
head->read_var2 = NULL; |
if (member->is_ipv6) |
1912 |
head->read_step = 8; |
ccs_print_ipv6(buffer, sizeof(buffer), |
1913 |
case 8: |
member->min.ipv6, |
1914 |
if (!ccs_read_no_rewrite_policy(head)) |
member->max.ipv6); |
1915 |
break; |
else |
1916 |
head->read_var2 = NULL; |
ccs_print_ipv4(buffer, sizeof(buffer), |
1917 |
head->read_step = 9; |
member->min.ipv4, |
1918 |
case 9: |
member->max.ipv4); |
1919 |
if (!ccs_read_path_group_policy(head)) |
} |
1920 |
break; |
if (!ccs_io_printf(head, "%s%s %s\n", w[0], w[1], |
1921 |
head->read_var1 = NULL; |
w[2])) |
1922 |
head->read_var2 = NULL; |
return false; |
1923 |
head->read_step = 10; |
} |
1924 |
case 10: |
} |
1925 |
if (!ccs_read_number_group_policy(head)) |
return true; |
1926 |
break; |
} |
1927 |
head->read_var1 = NULL; |
|
1928 |
head->read_var2 = NULL; |
/** |
1929 |
head->read_step = 11; |
* ccs_read_policy - Read "struct ccs_..._entry" list. |
1930 |
case 11: |
* |
1931 |
if (!ccs_read_address_group_policy(head)) |
* @head: Pointer to "struct ccs_io_buffer". |
1932 |
break; |
* @idx: Index number. |
1933 |
head->read_var2 = NULL; |
* |
1934 |
head->read_step = 12; |
* Returns true on success, false otherwise. |
1935 |
case 12: |
* |
1936 |
if (!ccs_read_reserved_port_policy(head)) |
* Caller holds ccs_read_lock(). |
1937 |
break; |
*/ |
1938 |
head->read_eof = true; |
static bool ccs_read_policy(struct ccs_io_buffer *head, const int idx) |
1939 |
|
{ |
1940 |
|
struct list_head *pos; |
1941 |
|
list_for_each_cookie(pos, head->read_var2, &ccs_policy_list[idx]) { |
1942 |
|
const char *w[4] = { "", "", "", "" }; |
1943 |
|
char buffer[16]; |
1944 |
|
struct ccs_acl_head *acl = container_of(pos, typeof(*acl), |
1945 |
|
list); |
1946 |
|
if (acl->is_deleted) |
1947 |
|
continue; |
1948 |
|
switch (idx) { |
1949 |
|
case CCS_ID_DOMAIN_KEEPER: |
1950 |
|
{ |
1951 |
|
struct ccs_domain_keeper *ptr = |
1952 |
|
container_of(acl, typeof(*ptr), head); |
1953 |
|
w[0] = ptr->is_not ? |
1954 |
|
CCS_KEYWORD_NO_KEEP_DOMAIN : |
1955 |
|
CCS_KEYWORD_KEEP_DOMAIN; |
1956 |
|
if (ptr->program) { |
1957 |
|
w[1] = ptr->program->name; |
1958 |
|
w[2] = " from "; |
1959 |
|
} |
1960 |
|
w[3] = ptr->domainname->name; |
1961 |
|
} |
1962 |
|
break; |
1963 |
|
case CCS_ID_DOMAIN_INITIALIZER: |
1964 |
|
{ |
1965 |
|
struct ccs_domain_initializer *ptr = |
1966 |
|
container_of(acl, typeof(*ptr), head); |
1967 |
|
w[0] = ptr->is_not ? |
1968 |
|
CCS_KEYWORD_NO_INITIALIZE_DOMAIN : |
1969 |
|
CCS_KEYWORD_INITIALIZE_DOMAIN; |
1970 |
|
w[1] = ptr->program->name; |
1971 |
|
if (ptr->domainname) { |
1972 |
|
w[2] = " from "; |
1973 |
|
w[3] = ptr->domainname->name; |
1974 |
|
} |
1975 |
|
} |
1976 |
|
break; |
1977 |
|
case CCS_ID_AGGREGATOR: |
1978 |
|
{ |
1979 |
|
struct ccs_aggregator *ptr = |
1980 |
|
container_of(acl, typeof(*ptr), head); |
1981 |
|
w[0] = CCS_KEYWORD_AGGREGATOR; |
1982 |
|
w[1] = ptr->original_name->name; |
1983 |
|
w[2] = " "; |
1984 |
|
w[3] = ptr->aggregated_name->name; |
1985 |
|
} |
1986 |
|
break; |
1987 |
|
case CCS_ID_PATTERN: |
1988 |
|
{ |
1989 |
|
struct ccs_pattern *ptr = |
1990 |
|
container_of(acl, typeof(*ptr), head); |
1991 |
|
w[0] = CCS_KEYWORD_FILE_PATTERN; |
1992 |
|
w[1] = ptr->pattern->name; |
1993 |
|
} |
1994 |
|
break; |
1995 |
|
case CCS_ID_NO_REWRITE: |
1996 |
|
{ |
1997 |
|
struct ccs_no_rewrite *ptr = |
1998 |
|
container_of(acl, typeof(*ptr), head); |
1999 |
|
w[0] = CCS_KEYWORD_DENY_REWRITE; |
2000 |
|
w[1] = ptr->pattern->name; |
2001 |
|
} |
2002 |
|
break; |
2003 |
|
case CCS_ID_RESERVEDPORT: |
2004 |
|
{ |
2005 |
|
struct ccs_reserved *ptr = |
2006 |
|
container_of(acl, typeof(*ptr), head); |
2007 |
|
const u16 min_port = ptr->min_port; |
2008 |
|
const u16 max_port = ptr->max_port; |
2009 |
|
w[0] = CCS_KEYWORD_DENY_AUTOBIND; |
2010 |
|
snprintf(buffer, sizeof(buffer) - 1, "%u%c%u", |
2011 |
|
min_port, min_port != max_port ? |
2012 |
|
'-' : '\0', max_port); |
2013 |
|
buffer[sizeof(buffer) - 1] = '\0'; |
2014 |
|
w[1] = buffer; |
2015 |
|
} |
2016 |
break; |
break; |
2017 |
default: |
default: |
2018 |
return -EINVAL; |
continue; |
2019 |
} |
} |
2020 |
|
if (!ccs_io_printf(head, "%s%s%s%s\n", w[0], w[1], w[2], w[3])) |
2021 |
|
return false; |
2022 |
} |
} |
2023 |
return 0; |
return true; |
2024 |
|
} |
2025 |
|
|
2026 |
|
static void ccs_read_global_domain(struct ccs_io_buffer *head) |
2027 |
|
{ |
2028 |
|
if (!head->read_eof) |
2029 |
|
head->read_eof = ccs_read_domain2(head, &ccs_global_domain); |
2030 |
|
} |
2031 |
|
|
2032 |
|
/** |
2033 |
|
* ccs_read_exception - Read exception policy. |
2034 |
|
* |
2035 |
|
* @head: Pointer to "struct ccs_io_buffer". |
2036 |
|
* |
2037 |
|
* Caller holds ccs_read_lock(). |
2038 |
|
*/ |
2039 |
|
static void ccs_read_exception(struct ccs_io_buffer *head) |
2040 |
|
{ |
2041 |
|
if (head->read_eof) |
2042 |
|
return; |
2043 |
|
while (head->read_step < CCS_MAX_POLICY && |
2044 |
|
ccs_read_policy(head, head->read_step)) |
2045 |
|
head->read_step++; |
2046 |
|
if (head->read_step < CCS_MAX_POLICY) |
2047 |
|
return; |
2048 |
|
while (head->read_step < CCS_MAX_POLICY + CCS_MAX_GROUP && |
2049 |
|
ccs_read_group(head, head->read_step - CCS_MAX_POLICY)) |
2050 |
|
head->read_step++; |
2051 |
|
if (head->read_step < CCS_MAX_POLICY + CCS_MAX_GROUP) |
2052 |
|
return; |
2053 |
|
head->read = ccs_read_global_domain; |
2054 |
|
} |
2055 |
|
|
2056 |
|
/** |
2057 |
|
* ccs_get_argv0 - Get argv[0]. |
2058 |
|
* |
2059 |
|
* @ee: Pointer to "struct ccs_execve". |
2060 |
|
* |
2061 |
|
* Returns true on success, false otherwise. |
2062 |
|
*/ |
2063 |
|
static bool ccs_get_argv0(struct ccs_execve *ee) |
2064 |
|
{ |
2065 |
|
struct linux_binprm *bprm = ee->bprm; |
2066 |
|
char *arg_ptr = ee->tmp; |
2067 |
|
int arg_len = 0; |
2068 |
|
unsigned long pos = bprm->p; |
2069 |
|
int offset = pos % PAGE_SIZE; |
2070 |
|
bool done = false; |
2071 |
|
if (!bprm->argc) |
2072 |
|
goto out; |
2073 |
|
while (1) { |
2074 |
|
if (!ccs_dump_page(bprm, pos, &ee->dump)) |
2075 |
|
goto out; |
2076 |
|
pos += PAGE_SIZE - offset; |
2077 |
|
/* Read. */ |
2078 |
|
while (offset < PAGE_SIZE) { |
2079 |
|
const char *kaddr = ee->dump.data; |
2080 |
|
const unsigned char c = kaddr[offset++]; |
2081 |
|
if (c && arg_len < CCS_EXEC_TMPSIZE - 10) { |
2082 |
|
if (c == '\\') { |
2083 |
|
arg_ptr[arg_len++] = '\\'; |
2084 |
|
arg_ptr[arg_len++] = '\\'; |
2085 |
|
} else if (c > ' ' && c < 127) { |
2086 |
|
arg_ptr[arg_len++] = c; |
2087 |
|
} else { |
2088 |
|
arg_ptr[arg_len++] = '\\'; |
2089 |
|
arg_ptr[arg_len++] = (c >> 6) + '0'; |
2090 |
|
arg_ptr[arg_len++] |
2091 |
|
= ((c >> 3) & 7) + '0'; |
2092 |
|
arg_ptr[arg_len++] = (c & 7) + '0'; |
2093 |
|
} |
2094 |
|
} else { |
2095 |
|
arg_ptr[arg_len] = '\0'; |
2096 |
|
done = true; |
2097 |
|
break; |
2098 |
|
} |
2099 |
|
} |
2100 |
|
offset = 0; |
2101 |
|
if (done) |
2102 |
|
break; |
2103 |
|
} |
2104 |
|
return true; |
2105 |
|
out: |
2106 |
|
return false; |
2107 |
|
} |
2108 |
|
|
2109 |
|
/** |
2110 |
|
* ccs_get_execute_condition - Get condition part for execute requests. |
2111 |
|
* |
2112 |
|
* @ee: Pointer to "struct ccs_execve". |
2113 |
|
* |
2114 |
|
* Returns pointer to "struct ccs_condition" on success, NULL otherwise. |
2115 |
|
*/ |
2116 |
|
static struct ccs_condition *ccs_get_execute_condition(struct ccs_execve |
2117 |
|
*ee) |
2118 |
|
{ |
2119 |
|
struct ccs_condition *cond; |
2120 |
|
char *buf; |
2121 |
|
int len = 256; |
2122 |
|
char *realpath = NULL; |
2123 |
|
char *argv0 = NULL; |
2124 |
|
const struct ccs_profile *profile = ccs_profile(ccs_current_domain()-> |
2125 |
|
profile); |
2126 |
|
if (profile->learning->learning_exec_realpath) { |
2127 |
|
struct file *file = ee->bprm->file; |
2128 |
|
#if LINUX_VERSION_CODE < KERNEL_VERSION(2, 6, 20) |
2129 |
|
struct path path = { file->f_vfsmnt, file->f_dentry }; |
2130 |
|
realpath = ccs_realpath_from_path(&path); |
2131 |
|
#else |
2132 |
|
realpath = ccs_realpath_from_path(&file->f_path); |
2133 |
|
#endif |
2134 |
|
if (realpath) |
2135 |
|
len += strlen(realpath) + 17; |
2136 |
|
} |
2137 |
|
if (profile->learning->learning_exec_argv0) { |
2138 |
|
if (ccs_get_argv0(ee)) { |
2139 |
|
argv0 = ee->tmp; |
2140 |
|
len += strlen(argv0) + 16; |
2141 |
|
} |
2142 |
|
} |
2143 |
|
buf = kmalloc(len, CCS_GFP_FLAGS); |
2144 |
|
if (!buf) { |
2145 |
|
kfree(realpath); |
2146 |
|
return NULL; |
2147 |
|
} |
2148 |
|
snprintf(buf, len - 1, "if"); |
2149 |
|
if (current->ccs_flags & CCS_TASK_IS_EXECUTE_HANDLER) { |
2150 |
|
const int pos = strlen(buf); |
2151 |
|
snprintf(buf + pos, len - pos - 1, |
2152 |
|
" task.type=execute_handler"); |
2153 |
|
} |
2154 |
|
if (realpath) { |
2155 |
|
const int pos = strlen(buf); |
2156 |
|
snprintf(buf + pos, len - pos - 1, " exec.realpath=\"%s\"", |
2157 |
|
realpath); |
2158 |
|
kfree(realpath); |
2159 |
|
} |
2160 |
|
if (argv0) { |
2161 |
|
const int pos = strlen(buf); |
2162 |
|
snprintf(buf + pos, len - pos - 1, " exec.argv[0]=\"%s\"", |
2163 |
|
argv0); |
2164 |
|
} |
2165 |
|
cond = ccs_get_condition(buf); |
2166 |
|
kfree(buf); |
2167 |
|
return cond; |
2168 |
|
} |
2169 |
|
|
2170 |
|
/** |
2171 |
|
* ccs_get_symlink_condition - Get condition part for symlink requests. |
2172 |
|
* |
2173 |
|
* @r: Pointer to "struct ccs_request_info". |
2174 |
|
* |
2175 |
|
* Returns pointer to "struct ccs_condition" on success, NULL otherwise. |
2176 |
|
*/ |
2177 |
|
static struct ccs_condition *ccs_get_symlink_condition(struct ccs_request_info |
2178 |
|
*r) |
2179 |
|
{ |
2180 |
|
struct ccs_condition *cond; |
2181 |
|
char *buf; |
2182 |
|
int len = 256; |
2183 |
|
const char *symlink = NULL; |
2184 |
|
const struct ccs_profile *profile = ccs_profile(r->profile); |
2185 |
|
if (profile->learning->learning_symlink_target) { |
2186 |
|
symlink = r->obj->symlink_target->name; |
2187 |
|
len += strlen(symlink) + 18; |
2188 |
|
} |
2189 |
|
buf = kmalloc(len, CCS_GFP_FLAGS); |
2190 |
|
if (!buf) |
2191 |
|
return NULL; |
2192 |
|
snprintf(buf, len - 1, "if"); |
2193 |
|
if (current->ccs_flags & CCS_TASK_IS_EXECUTE_HANDLER) { |
2194 |
|
const int pos = strlen(buf); |
2195 |
|
snprintf(buf + pos, len - pos - 1, |
2196 |
|
" task.type=execute_handler"); |
2197 |
|
} |
2198 |
|
if (symlink) { |
2199 |
|
const int pos = strlen(buf); |
2200 |
|
snprintf(buf + pos, len - pos - 1, " symlink.target=\"%s\"", |
2201 |
|
symlink); |
2202 |
|
} |
2203 |
|
cond = ccs_get_condition(buf); |
2204 |
|
kfree(buf); |
2205 |
|
return cond; |
2206 |
} |
} |
2207 |
|
|
2208 |
/* Wait queue for ccs_query_list. */ |
/* Wait queue for ccs_query_list. */ |
2228 |
static atomic_t ccs_query_observers = ATOMIC_INIT(0); |
static atomic_t ccs_query_observers = ATOMIC_INIT(0); |
2229 |
|
|
2230 |
/** |
/** |
2231 |
* ccs_check_supervisor - Ask for the supervisor's decision. |
* ccs_supervisor - Ask for the supervisor's decision. |
2232 |
* |
* |
2233 |
* @r: Pointer to "struct ccs_request_info". |
* @r: Pointer to "struct ccs_request_info". |
2234 |
* @fmt: The printf()'s format string, followed by parameters. |
* @fmt: The printf()'s format string, followed by parameters. |
2235 |
* |
* |
2236 |
* Returns 0 if the supervisor decided to permit the access request which |
* Returns 0 if the supervisor decided to permit the access request which |
2237 |
* violated the policy in enforcing mode, 1 if the supervisor decided to |
* violated the policy in enforcing mode, CCS_RETRY_REQUEST if the supervisor |
2238 |
* retry the access request which violated the policy in enforcing mode, |
* decided to retry the access request which violated the policy in enforcing |
2239 |
* -EPERM otherwise. |
* mode, 0 if it is not in enforcing mode, -EPERM otherwise. |
2240 |
*/ |
*/ |
2241 |
int ccs_check_supervisor(struct ccs_request_info *r, const char *fmt, ...) |
int ccs_supervisor(struct ccs_request_info *r, const char *fmt, ...) |
2242 |
{ |
{ |
2243 |
va_list args; |
va_list args; |
2244 |
int error = -EPERM; |
int error = -EPERM; |
2248 |
struct ccs_query_entry *ccs_query_entry = NULL; |
struct ccs_query_entry *ccs_query_entry = NULL; |
2249 |
bool quota_exceeded = false; |
bool quota_exceeded = false; |
2250 |
char *header; |
char *header; |
2251 |
if (!r->domain) |
struct ccs_domain_info * const domain = ccs_current_domain(); |
2252 |
r->domain = ccs_current_domain(); |
switch (r->mode) { |
2253 |
|
char *buffer; |
2254 |
|
struct ccs_condition *cond; |
2255 |
|
case CCS_CONFIG_LEARNING: |
2256 |
|
if (!ccs_domain_quota_ok(r)) |
2257 |
|
return 0; |
2258 |
|
va_start(args, fmt); |
2259 |
|
len = vsnprintf((char *) &pos, sizeof(pos) - 1, fmt, args) + 4; |
2260 |
|
va_end(args); |
2261 |
|
buffer = kmalloc(len, CCS_GFP_FLAGS); |
2262 |
|
if (!buffer) |
2263 |
|
return 0; |
2264 |
|
va_start(args, fmt); |
2265 |
|
vsnprintf(buffer, len - 1, fmt, args); |
2266 |
|
va_end(args); |
2267 |
|
ccs_normalize_line(buffer); |
2268 |
|
if (r->ee && !strncmp(buffer, "allow_execute ", 14)) |
2269 |
|
cond = ccs_get_execute_condition(r->ee); |
2270 |
|
else if (r->obj && r->obj->symlink_target) |
2271 |
|
cond = ccs_get_symlink_condition(r); |
2272 |
|
else if ((current->ccs_flags & CCS_TASK_IS_EXECUTE_HANDLER)) { |
2273 |
|
char str[] = "if task.type=execute_handler"; |
2274 |
|
cond = ccs_get_condition(str); |
2275 |
|
} else |
2276 |
|
cond = NULL; |
2277 |
|
ccs_write_domain2(buffer, domain, cond, false); |
2278 |
|
ccs_put_condition(cond); |
2279 |
|
kfree(buffer); |
2280 |
|
/* fall through */ |
2281 |
|
case CCS_CONFIG_PERMISSIVE: |
2282 |
|
return 0; |
2283 |
|
} |
2284 |
if (!atomic_read(&ccs_query_observers)) { |
if (!atomic_read(&ccs_query_observers)) { |
2285 |
int i; |
int i; |
2286 |
if (current->ccs_flags & CCS_DONT_SLEEP_ON_ENFORCE_ERROR) |
if (current->ccs_flags & CCS_DONT_SLEEP_ON_ENFORCE_ERROR) |
2287 |
return -EPERM; |
return -EPERM; |
2288 |
for (i = 0; i < ccs_check_flags(r->domain, CCS_SLEEP_PERIOD); |
for (i = 0; i < ccs_profile(domain->profile)->enforcing-> |
2289 |
i++) { |
enforcing_penalty; i++) { |
2290 |
set_current_state(TASK_INTERRUPTIBLE); |
set_current_state(TASK_INTERRUPTIBLE); |
2291 |
schedule_timeout(HZ / 10); |
schedule_timeout(HZ / 10); |
2292 |
} |
} |
2295 |
va_start(args, fmt); |
va_start(args, fmt); |
2296 |
len = vsnprintf((char *) &pos, sizeof(pos) - 1, fmt, args) + 32; |
len = vsnprintf((char *) &pos, sizeof(pos) - 1, fmt, args) + 32; |
2297 |
va_end(args); |
va_end(args); |
2298 |
header = ccs_init_audit_log(&len, r); |
header = ccs_init_log(&len, r); |
2299 |
if (!header) |
if (!header) |
2300 |
goto out; |
goto out; |
2301 |
ccs_query_entry = kzalloc(sizeof(*ccs_query_entry), GFP_KERNEL); |
ccs_query_entry = kzalloc(sizeof(*ccs_query_entry), CCS_GFP_FLAGS); |
2302 |
if (!ccs_query_entry) |
if (!ccs_query_entry) |
2303 |
goto out; |
goto out; |
2304 |
ccs_query_entry->query = kzalloc(len, GFP_KERNEL); |
len = ccs_round2(len); |
2305 |
|
ccs_query_entry->query = kzalloc(len, CCS_GFP_FLAGS); |
2306 |
if (!ccs_query_entry->query) |
if (!ccs_query_entry->query) |
2307 |
goto out; |
goto out; |
2308 |
INIT_LIST_HEAD(&ccs_query_entry->list); |
INIT_LIST_HEAD(&ccs_query_entry->list); |
|
/***** CRITICAL SECTION START *****/ |
|
2309 |
spin_lock(&ccs_query_list_lock); |
spin_lock(&ccs_query_list_lock); |
2310 |
if (ccs_quota_for_query && ccs_query_memory_size + len + |
if (ccs_quota_for_query && ccs_query_memory_size + len + |
2311 |
sizeof(*ccs_query_entry) >= ccs_quota_for_query) { |
sizeof(*ccs_query_entry) >= ccs_quota_for_query) { |
2315 |
ccs_query_entry->serial = ccs_serial++; |
ccs_query_entry->serial = ccs_serial++; |
2316 |
} |
} |
2317 |
spin_unlock(&ccs_query_list_lock); |
spin_unlock(&ccs_query_list_lock); |
|
/***** CRITICAL SECTION END *****/ |
|
2318 |
if (quota_exceeded) |
if (quota_exceeded) |
2319 |
goto out; |
goto out; |
2320 |
pos = snprintf(ccs_query_entry->query, len - 1, "Q%u-%hu\n%s", |
pos = snprintf(ccs_query_entry->query, len - 1, "Q%u-%hu\n%s", |
2325 |
vsnprintf(ccs_query_entry->query + pos, len - 1 - pos, fmt, args); |
vsnprintf(ccs_query_entry->query + pos, len - 1 - pos, fmt, args); |
2326 |
ccs_query_entry->query_len = strlen(ccs_query_entry->query) + 1; |
ccs_query_entry->query_len = strlen(ccs_query_entry->query) + 1; |
2327 |
va_end(args); |
va_end(args); |
|
/***** CRITICAL SECTION START *****/ |
|
2328 |
spin_lock(&ccs_query_list_lock); |
spin_lock(&ccs_query_list_lock); |
2329 |
list_add_tail(&ccs_query_entry->list, &ccs_query_list); |
list_add_tail(&ccs_query_entry->list, &ccs_query_list); |
2330 |
spin_unlock(&ccs_query_list_lock); |
spin_unlock(&ccs_query_list_lock); |
|
/***** CRITICAL SECTION END *****/ |
|
2331 |
/* Give 10 seconds for supervisor's opinion. */ |
/* Give 10 seconds for supervisor's opinion. */ |
2332 |
for (ccs_query_entry->timer = 0; |
for (ccs_query_entry->timer = 0; |
2333 |
atomic_read(&ccs_query_observers) && ccs_query_entry->timer < 100; |
atomic_read(&ccs_query_observers) && ccs_query_entry->timer < 100; |
2338 |
if (ccs_query_entry->answer) |
if (ccs_query_entry->answer) |
2339 |
break; |
break; |
2340 |
} |
} |
|
/***** CRITICAL SECTION START *****/ |
|
2341 |
spin_lock(&ccs_query_list_lock); |
spin_lock(&ccs_query_list_lock); |
2342 |
list_del(&ccs_query_entry->list); |
list_del(&ccs_query_entry->list); |
2343 |
ccs_query_memory_size -= len + sizeof(*ccs_query_entry); |
ccs_query_memory_size -= len + sizeof(*ccs_query_entry); |
2344 |
spin_unlock(&ccs_query_list_lock); |
spin_unlock(&ccs_query_list_lock); |
|
/***** CRITICAL SECTION END *****/ |
|
2345 |
switch (ccs_query_entry->answer) { |
switch (ccs_query_entry->answer) { |
2346 |
case 3: /* Asked to retry by administrator. */ |
case 3: /* Asked to retry by administrator. */ |
2347 |
error = 1; |
error = CCS_RETRY_REQUEST; |
2348 |
r->retry++; |
r->retry++; |
2349 |
break; |
break; |
2350 |
case 1: |
case 1: |
2382 |
bool found = false; |
bool found = false; |
2383 |
u8 i; |
u8 i; |
2384 |
for (i = 0; i < 2; i++) { |
for (i = 0; i < 2; i++) { |
|
/***** CRITICAL SECTION START *****/ |
|
2385 |
spin_lock(&ccs_query_list_lock); |
spin_lock(&ccs_query_list_lock); |
2386 |
list_for_each(tmp, &ccs_query_list) { |
list_for_each(tmp, &ccs_query_list) { |
2387 |
struct ccs_query_entry *ptr |
struct ccs_query_entry *ptr = |
2388 |
= list_entry(tmp, struct ccs_query_entry, list); |
list_entry(tmp, struct ccs_query_entry, list); |
2389 |
if (ptr->answer) |
if (ptr->answer) |
2390 |
continue; |
continue; |
2391 |
found = true; |
found = true; |
2392 |
break; |
break; |
2393 |
} |
} |
2394 |
spin_unlock(&ccs_query_list_lock); |
spin_unlock(&ccs_query_list_lock); |
|
/***** CRITICAL SECTION END *****/ |
|
2395 |
if (found) |
if (found) |
2396 |
return POLLIN | POLLRDNORM; |
return POLLIN | POLLRDNORM; |
2397 |
if (i) |
if (i) |
2405 |
* ccs_read_query - Read access requests which violated policy in enforcing mode. |
* ccs_read_query - Read access requests which violated policy in enforcing mode. |
2406 |
* |
* |
2407 |
* @head: Pointer to "struct ccs_io_buffer". |
* @head: Pointer to "struct ccs_io_buffer". |
|
* |
|
|
* Returns 0. |
|
2408 |
*/ |
*/ |
2409 |
static int ccs_read_query(struct ccs_io_buffer *head) |
static void ccs_read_query(struct ccs_io_buffer *head) |
2410 |
{ |
{ |
2411 |
struct list_head *tmp; |
struct list_head *tmp; |
2412 |
int pos = 0; |
int pos = 0; |
2413 |
int len = 0; |
int len = 0; |
2414 |
char *buf; |
char *buf; |
2415 |
if (head->read_avail) |
if (head->read_avail) |
2416 |
return 0; |
return; |
2417 |
if (head->read_buf) { |
if (head->read_buf) { |
2418 |
kfree(head->read_buf); |
kfree(head->read_buf); |
2419 |
head->read_buf = NULL; |
head->read_buf = NULL; |
2420 |
head->readbuf_size = 0; |
head->readbuf_size = 0; |
2421 |
} |
} |
|
/***** CRITICAL SECTION START *****/ |
|
2422 |
spin_lock(&ccs_query_list_lock); |
spin_lock(&ccs_query_list_lock); |
2423 |
list_for_each(tmp, &ccs_query_list) { |
list_for_each(tmp, &ccs_query_list) { |
2424 |
struct ccs_query_entry *ptr |
struct ccs_query_entry *ptr |
2431 |
break; |
break; |
2432 |
} |
} |
2433 |
spin_unlock(&ccs_query_list_lock); |
spin_unlock(&ccs_query_list_lock); |
|
/***** CRITICAL SECTION END *****/ |
|
2434 |
if (!len) { |
if (!len) { |
2435 |
head->read_step = 0; |
head->read_step = 0; |
2436 |
return 0; |
return; |
2437 |
} |
} |
2438 |
buf = kzalloc(len, GFP_KERNEL); |
buf = kzalloc(len, CCS_GFP_FLAGS); |
2439 |
if (!buf) |
if (!buf) |
2440 |
return 0; |
return; |
2441 |
pos = 0; |
pos = 0; |
|
/***** CRITICAL SECTION START *****/ |
|
2442 |
spin_lock(&ccs_query_list_lock); |
spin_lock(&ccs_query_list_lock); |
2443 |
list_for_each(tmp, &ccs_query_list) { |
list_for_each(tmp, &ccs_query_list) { |
2444 |
struct ccs_query_entry *ptr |
struct ccs_query_entry *ptr |
2456 |
break; |
break; |
2457 |
} |
} |
2458 |
spin_unlock(&ccs_query_list_lock); |
spin_unlock(&ccs_query_list_lock); |
|
/***** CRITICAL SECTION END *****/ |
|
2459 |
if (buf[0]) { |
if (buf[0]) { |
2460 |
head->read_avail = len; |
head->read_avail = len; |
2461 |
head->readbuf_size = head->read_avail; |
head->readbuf_size = head->read_avail; |
2464 |
} else { |
} else { |
2465 |
kfree(buf); |
kfree(buf); |
2466 |
} |
} |
|
return 0; |
|
2467 |
} |
} |
2468 |
|
|
2469 |
/** |
/** |
2479 |
struct list_head *tmp; |
struct list_head *tmp; |
2480 |
unsigned int serial; |
unsigned int serial; |
2481 |
unsigned int answer; |
unsigned int answer; |
|
/***** CRITICAL SECTION START *****/ |
|
2482 |
spin_lock(&ccs_query_list_lock); |
spin_lock(&ccs_query_list_lock); |
2483 |
list_for_each(tmp, &ccs_query_list) { |
list_for_each(tmp, &ccs_query_list) { |
2484 |
struct ccs_query_entry *ptr |
struct ccs_query_entry *ptr |
2486 |
ptr->timer = 0; |
ptr->timer = 0; |
2487 |
} |
} |
2488 |
spin_unlock(&ccs_query_list_lock); |
spin_unlock(&ccs_query_list_lock); |
|
/***** CRITICAL SECTION END *****/ |
|
2489 |
if (sscanf(data, "A%u=%u", &serial, &answer) != 2) |
if (sscanf(data, "A%u=%u", &serial, &answer) != 2) |
2490 |
return -EINVAL; |
return -EINVAL; |
|
/***** CRITICAL SECTION START *****/ |
|
2491 |
spin_lock(&ccs_query_list_lock); |
spin_lock(&ccs_query_list_lock); |
2492 |
list_for_each(tmp, &ccs_query_list) { |
list_for_each(tmp, &ccs_query_list) { |
2493 |
struct ccs_query_entry *ptr |
struct ccs_query_entry *ptr |
2499 |
break; |
break; |
2500 |
} |
} |
2501 |
spin_unlock(&ccs_query_list_lock); |
spin_unlock(&ccs_query_list_lock); |
|
/***** CRITICAL SECTION END *****/ |
|
2502 |
return 0; |
return 0; |
2503 |
} |
} |
2504 |
|
|
2506 |
* ccs_read_version: Get version. |
* ccs_read_version: Get version. |
2507 |
* |
* |
2508 |
* @head: Pointer to "struct ccs_io_buffer". |
* @head: Pointer to "struct ccs_io_buffer". |
|
* |
|
|
* Returns version information. |
|
2509 |
*/ |
*/ |
2510 |
static int ccs_read_version(struct ccs_io_buffer *head) |
static void ccs_read_version(struct ccs_io_buffer *head) |
2511 |
{ |
{ |
2512 |
if (!head->read_eof) { |
if (head->read_eof) |
2513 |
ccs_io_printf(head, "1.7.0-pre"); |
return; |
2514 |
head->read_eof = true; |
ccs_io_printf(head, "1.7.2"); |
2515 |
} |
head->read_eof = true; |
|
return 0; |
|
2516 |
} |
} |
2517 |
|
|
2518 |
/** |
/** |
2519 |
* ccs_read_self_domain - Get the current process's domainname. |
* ccs_read_self_domain - Get the current process's domainname. |
2520 |
* |
* |
2521 |
* @head: Pointer to "struct ccs_io_buffer". |
* @head: Pointer to "struct ccs_io_buffer". |
|
* |
|
|
* Returns the current process's domainname. |
|
2522 |
*/ |
*/ |
2523 |
static int ccs_read_self_domain(struct ccs_io_buffer *head) |
static void ccs_read_self_domain(struct ccs_io_buffer *head) |
2524 |
{ |
{ |
2525 |
if (!head->read_eof) { |
if (head->read_eof) |
2526 |
/* |
return; |
2527 |
* ccs_current_domain()->domainname != NULL |
/* |
2528 |
* because every process belongs to a domain and |
* ccs_current_domain()->domainname != NULL because every process |
2529 |
* the domain's name cannot be NULL. |
* belongs to a domain and the domain's name cannot be NULL. |
2530 |
*/ |
*/ |
2531 |
ccs_io_printf(head, "%s", |
ccs_io_printf(head, "%s", ccs_current_domain()->domainname->name); |
2532 |
ccs_current_domain()->domainname->name); |
head->read_eof = true; |
|
head->read_eof = true; |
|
|
} |
|
|
return 0; |
|
2533 |
} |
} |
2534 |
|
|
2535 |
/** |
/** |
2542 |
*/ |
*/ |
2543 |
int ccs_open_control(const u8 type, struct file *file) |
int ccs_open_control(const u8 type, struct file *file) |
2544 |
{ |
{ |
2545 |
struct ccs_io_buffer *head = kzalloc(sizeof(*head), GFP_KERNEL); |
struct ccs_io_buffer *head = kzalloc(sizeof(*head), CCS_GFP_FLAGS); |
2546 |
if (!head) |
if (!head) |
2547 |
return -ENOMEM; |
return -ENOMEM; |
2548 |
mutex_init(&head->io_sem); |
mutex_init(&head->io_sem); |
2549 |
head->type = type; |
head->type = type; |
2550 |
switch (type) { |
switch (type) { |
2551 |
case CCS_DOMAINPOLICY: /* /proc/ccs/domain_policy */ |
case CCS_DOMAINPOLICY: /* /proc/ccs/domain_policy */ |
2552 |
head->write = ccs_write_domain_policy; |
head->write = ccs_write_domain; |
2553 |
head->read = ccs_read_domain_policy; |
head->read = ccs_read_domain; |
2554 |
break; |
break; |
2555 |
case CCS_EXCEPTIONPOLICY: /* /proc/ccs/exception_policy */ |
case CCS_EXCEPTIONPOLICY: /* /proc/ccs/exception_policy */ |
2556 |
head->write = ccs_write_exception_policy; |
head->write = ccs_write_exception; |
2557 |
head->read = ccs_read_exception_policy; |
head->read = ccs_read_exception; |
2558 |
break; |
break; |
2559 |
#ifdef CONFIG_CCSECURITY_AUDIT |
#ifdef CONFIG_CCSECURITY_AUDIT |
2560 |
case CCS_GRANTLOG: /* /proc/ccs/grant_log */ |
case CCS_GRANTLOG: /* /proc/ccs/grant_log */ |
|
head->poll = ccs_poll_grant_log; |
|
|
head->read = ccs_read_grant_log; |
|
|
break; |
|
2561 |
case CCS_REJECTLOG: /* /proc/ccs/reject_log */ |
case CCS_REJECTLOG: /* /proc/ccs/reject_log */ |
2562 |
head->poll = ccs_poll_reject_log; |
head->poll = ccs_poll_log; |
2563 |
head->read = ccs_read_reject_log; |
head->read = ccs_read_log; |
2564 |
break; |
break; |
2565 |
#endif |
#endif |
2566 |
case CCS_SELFDOMAIN: /* /proc/ccs/self_domain */ |
case CCS_SELFDOMAIN: /* /proc/ccs/self_domain */ |
2600 |
head->read = ccs_read_query; |
head->read = ccs_read_query; |
2601 |
break; |
break; |
2602 |
case CCS_MANAGER: /* /proc/ccs/manager */ |
case CCS_MANAGER: /* /proc/ccs/manager */ |
2603 |
head->write = ccs_write_manager_policy; |
head->write = ccs_write_manager; |
2604 |
head->read = ccs_read_manager_policy; |
head->read = ccs_read_manager; |
2605 |
break; |
break; |
2606 |
} |
} |
2607 |
if (!(file->f_mode & FMODE_READ)) { |
if (!(file->f_mode & FMODE_READ)) { |
2611 |
*/ |
*/ |
2612 |
head->read = NULL; |
head->read = NULL; |
2613 |
head->poll = NULL; |
head->poll = NULL; |
2614 |
} else if (type != CCS_QUERY && |
} else if (!head->poll) { |
2615 |
type != CCS_GRANTLOG && type != CCS_REJECTLOG) { |
/* Don't allocate read_buf for poll() access. */ |
|
/* |
|
|
* Don't allocate buffer for reading if the file is one of |
|
|
* /proc/ccs/grant_log , /proc/ccs/reject_log , /proc/ccs/query. |
|
|
*/ |
|
2616 |
if (!head->readbuf_size) |
if (!head->readbuf_size) |
2617 |
head->readbuf_size = 4096 * 2; |
head->readbuf_size = 4096; |
2618 |
head->read_buf = kzalloc(head->readbuf_size, GFP_KERNEL); |
head->read_buf = kzalloc(head->readbuf_size, CCS_GFP_FLAGS); |
2619 |
if (!head->read_buf) { |
if (!head->read_buf) { |
2620 |
kfree(head); |
kfree(head); |
2621 |
return -ENOMEM; |
return -ENOMEM; |
2628 |
*/ |
*/ |
2629 |
head->write = NULL; |
head->write = NULL; |
2630 |
} else if (head->write) { |
} else if (head->write) { |
2631 |
head->writebuf_size = 4096 * 2; |
head->writebuf_size = 4096; |
2632 |
head->write_buf = kzalloc(head->writebuf_size, GFP_KERNEL); |
head->write_buf = kzalloc(head->writebuf_size, CCS_GFP_FLAGS); |
2633 |
if (!head->write_buf) { |
if (!head->write_buf) { |
2634 |
kfree(head->read_buf); |
kfree(head->read_buf); |
2635 |
kfree(head); |
kfree(head); |
2638 |
} |
} |
2639 |
if (type != CCS_QUERY && |
if (type != CCS_QUERY && |
2640 |
type != CCS_GRANTLOG && type != CCS_REJECTLOG) |
type != CCS_GRANTLOG && type != CCS_REJECTLOG) |
2641 |
head->reader_idx = ccs_read_lock(); |
head->reader_idx = ccs_lock(); |
2642 |
file->private_data = head; |
file->private_data = head; |
2643 |
/* |
/* |
2644 |
* Call the handler now if the file is /proc/ccs/self_domain |
* Call the handler now if the file is /proc/ccs/self_domain |
2649 |
ccs_read_control(file, NULL, 0); |
ccs_read_control(file, NULL, 0); |
2650 |
/* |
/* |
2651 |
* If the file is /proc/ccs/query , increment the observer counter. |
* If the file is /proc/ccs/query , increment the observer counter. |
2652 |
* The obserber counter is used by ccs_check_supervisor() to see if |
* The obserber counter is used by ccs_supervisor() to see if |
2653 |
* there is some process monitoring /proc/ccs/query. |
* there is some process monitoring /proc/ccs/query. |
2654 |
*/ |
*/ |
2655 |
else if (type == CCS_QUERY) |
else if (type == CCS_QUERY) |
2664 |
* @wait: Pointer to "poll_table". |
* @wait: Pointer to "poll_table". |
2665 |
* |
* |
2666 |
* Waits for read readiness. |
* Waits for read readiness. |
2667 |
* /proc/ccs/query is handled by /usr/lib/ccs/ccs-queryd and |
* /proc/ccs/query is handled by /usr/sbin/ccs-queryd and |
2668 |
* /proc/ccs/grant_log and /proc/ccs/reject_log are handled by |
* /proc/ccs/grant_log and /proc/ccs/reject_log are handled by |
2669 |
* /usr/lib/ccs/ccs-auditd. |
* /usr/sbin/ccs-auditd . |
2670 |
*/ |
*/ |
2671 |
int ccs_poll_control(struct file *file, poll_table *wait) |
int ccs_poll_control(struct file *file, poll_table *wait) |
2672 |
{ |
{ |
2691 |
int len = 0; |
int len = 0; |
2692 |
struct ccs_io_buffer *head = file->private_data; |
struct ccs_io_buffer *head = file->private_data; |
2693 |
char *cp; |
char *cp; |
2694 |
|
int idx; |
2695 |
if (!head->read) |
if (!head->read) |
2696 |
return -ENOSYS; |
return -ENOSYS; |
2697 |
if (!access_ok(VERIFY_WRITE, buffer, buffer_len)) |
if (!access_ok(VERIFY_WRITE, buffer, buffer_len)) |
2698 |
return -EFAULT; |
return -EFAULT; |
2699 |
if (mutex_lock_interruptible(&head->io_sem)) |
if (mutex_lock_interruptible(&head->io_sem)) |
2700 |
return -EINTR; |
return -EINTR; |
2701 |
/* Call the policy handler. */ |
idx = ccs_read_lock(); |
2702 |
len = head->read(head); |
while (1) { |
2703 |
if (len < 0) |
/* Call the policy handler. */ |
2704 |
goto out; |
head->read(head); |
2705 |
/* Write to buffer. */ |
/* Write to buffer. */ |
2706 |
len = head->read_avail; |
len = head->read_avail; |
2707 |
|
if (len || head->poll || head->read_eof) |
2708 |
|
break; |
2709 |
|
len = head->readbuf_size * 2; |
2710 |
|
cp = kzalloc(len, CCS_GFP_FLAGS); |
2711 |
|
if (!cp) { |
2712 |
|
len = -ENOMEM; |
2713 |
|
goto out; |
2714 |
|
} |
2715 |
|
kfree(head->read_buf); |
2716 |
|
head->read_buf = cp; |
2717 |
|
head->readbuf_size = len; |
2718 |
|
} |
2719 |
if (len > buffer_len) |
if (len > buffer_len) |
2720 |
len = buffer_len; |
len = buffer_len; |
2721 |
if (!len) |
if (!len) |
2729 |
head->read_avail -= len; |
head->read_avail -= len; |
2730 |
memmove(cp, cp + len, head->read_avail); |
memmove(cp, cp + len, head->read_avail); |
2731 |
out: |
out: |
2732 |
|
ccs_read_unlock(idx); |
2733 |
mutex_unlock(&head->io_sem); |
mutex_unlock(&head->io_sem); |
2734 |
return len; |
return len; |
2735 |
} |
} |
2750 |
int error = buffer_len; |
int error = buffer_len; |
2751 |
int avail_len = buffer_len; |
int avail_len = buffer_len; |
2752 |
char *cp0 = head->write_buf; |
char *cp0 = head->write_buf; |
2753 |
|
int idx; |
2754 |
if (!head->write) |
if (!head->write) |
2755 |
return -ENOSYS; |
return -ENOSYS; |
2756 |
if (!access_ok(VERIFY_READ, buffer, buffer_len)) |
if (!access_ok(VERIFY_READ, buffer, buffer_len)) |
2757 |
return -EFAULT; |
return -EFAULT; |
|
/* Don't allow updating policies by non manager programs. */ |
|
|
if (head->write != ccs_write_pid && |
|
|
head->write != ccs_write_domain_policy && |
|
|
!ccs_is_policy_manager()) |
|
|
return -EPERM; |
|
2758 |
if (mutex_lock_interruptible(&head->io_sem)) |
if (mutex_lock_interruptible(&head->io_sem)) |
2759 |
return -EINTR; |
return -EINTR; |
2760 |
|
idx = ccs_read_lock(); |
2761 |
|
/* Don't allow updating policies by non manager programs. */ |
2762 |
|
if (head->write != ccs_write_pid && head->write != ccs_write_domain && |
2763 |
|
!ccs_manager()) { |
2764 |
|
ccs_read_unlock(idx); |
2765 |
|
mutex_unlock(&head->io_sem); |
2766 |
|
return -EPERM; |
2767 |
|
} |
2768 |
/* Read a line and dispatch it to the policy handler. */ |
/* Read a line and dispatch it to the policy handler. */ |
2769 |
while (avail_len > 0) { |
while (avail_len > 0) { |
2770 |
char c; |
char c; |
2771 |
if (head->write_avail >= head->writebuf_size - 1) { |
if (head->write_avail >= head->writebuf_size - 1) { |
|