3 |
* |
* |
4 |
* Copyright (C) 2005-2009 NTT DATA CORPORATION |
* Copyright (C) 2005-2009 NTT DATA CORPORATION |
5 |
* |
* |
6 |
* Version: 1.7.0-pre 2009/08/08 |
* Version: 1.7.0 2009/09/04 |
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 |
|
#ifdef CONFIG_CCSECURITY_AUDIT |
20 |
|
.audit = &ccs_default_profile.preference, |
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 table. Memory is allocated as needed. */ |
37 |
CCS_MAX_CAPABILITY_INDEX + 1]; |
static struct ccs_profile *ccs_profile_ptr[CCS_MAX_PROFILES]; |
38 |
|
|
39 |
|
/* Lock for protecting "struct ccs_profile"->comment */ |
40 |
|
static DEFINE_SPINLOCK(ccs_profile_comment_lock); |
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_MAC_FOR_IOCTL] = { "MAC_FOR_IOCTL", 0, 3 }, |
= "file::open", |
55 |
[CCS_MAC_FOR_FILEATTR] = { "MAC_FOR_FILEATTR", 0, 3 }, |
[CCS_MAC_FILE_CREATE] |
56 |
[CCS_MAC_FOR_ARGV0] = { "MAC_FOR_ARGV0", 0, 3 }, |
= "file::create", |
57 |
[CCS_MAC_FOR_ENV] = { "MAC_FOR_ENV", 0, 3 }, |
[CCS_MAC_FILE_UNLINK] |
58 |
[CCS_MAC_FOR_NETWORK] = { "MAC_FOR_NETWORK", 0, 3 }, |
= "file::unlink", |
59 |
[CCS_MAC_FOR_SIGNAL] = { "MAC_FOR_SIGNAL", 0, 3 }, |
[CCS_MAC_FILE_MKDIR] |
60 |
[CCS_MAC_FOR_NAMESPACE] = { "MAC_FOR_NAMESPACE", 0, 3 }, |
= "file::mkdir", |
61 |
[CCS_RESTRICT_AUTOBIND] = { "RESTRICT_AUTOBIND", 0, 1 }, |
[CCS_MAC_FILE_RMDIR] |
62 |
[CCS_MAX_ACCEPT_ENTRY] |
= "file::rmdir", |
63 |
= { "MAX_ACCEPT_ENTRY", CONFIG_CCSECURITY_MAX_ACCEPT_ENTRY, INT_MAX }, |
[CCS_MAC_FILE_MKFIFO] |
64 |
#ifdef CONFIG_CCSECURITY_AUDIT |
= "file::mkfifo", |
65 |
[CCS_MAX_GRANT_LOG] |
[CCS_MAC_FILE_MKSOCK] |
66 |
= { "MAX_GRANT_LOG", CONFIG_CCSECURITY_MAX_GRANT_LOG, INT_MAX }, |
= "file::mksock", |
67 |
[CCS_MAX_REJECT_LOG] |
[CCS_MAC_FILE_TRUNCATE] |
68 |
= { "MAX_REJECT_LOG", CONFIG_CCSECURITY_MAX_REJECT_LOG, INT_MAX }, |
= "file::truncate", |
69 |
#endif |
[CCS_MAC_FILE_SYMLINK] |
70 |
[CCS_VERBOSE] = { "TOMOYO_VERBOSE", 1, 1 }, |
= "file::symlink", |
71 |
[CCS_SLEEP_PERIOD] |
[CCS_MAC_FILE_REWRITE] |
72 |
= { "SLEEP_PERIOD", 0, 3000 }, /* in 0.1 second */ |
= "file::rewrite", |
73 |
|
[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_ENVIRON] |
98 |
|
= "misc::env", |
99 |
|
[CCS_MAC_NETWORK_UDP_BIND] |
100 |
|
= "network::inet_udp_bind", |
101 |
|
[CCS_MAC_NETWORK_UDP_CONNECT] |
102 |
|
= "network::inet_udp_connect", |
103 |
|
[CCS_MAC_NETWORK_TCP_BIND] |
104 |
|
= "network::inet_tcp_bind", |
105 |
|
[CCS_MAC_NETWORK_TCP_LISTEN] |
106 |
|
= "network::inet_tcp_listen", |
107 |
|
[CCS_MAC_NETWORK_TCP_CONNECT] |
108 |
|
= "network::inet_tcp_connect", |
109 |
|
[CCS_MAC_NETWORK_TCP_ACCEPT] |
110 |
|
= "network::inet_tcp_accept", |
111 |
|
[CCS_MAC_NETWORK_RAW_BIND] |
112 |
|
= "network::inet_raw_bind", |
113 |
|
[CCS_MAC_NETWORK_RAW_CONNECT] |
114 |
|
= "network::inet_raw_connect", |
115 |
|
[CCS_MAC_SIGNAL] |
116 |
|
= "ipc::signal", |
117 |
|
[CCS_MAX_MAC_INDEX + CCS_INET_STREAM_SOCKET_CREATE] |
118 |
|
= "capability::inet_tcp_create", |
119 |
|
[CCS_MAX_MAC_INDEX + CCS_INET_STREAM_SOCKET_LISTEN] |
120 |
|
= "capability::inet_tcp_listen", |
121 |
|
[CCS_MAX_MAC_INDEX + CCS_INET_STREAM_SOCKET_CONNECT] |
122 |
|
= "capability::inet_tcp_connect", |
123 |
|
[CCS_MAX_MAC_INDEX + CCS_USE_INET_DGRAM_SOCKET] |
124 |
|
= "capability::use_inet_udp", |
125 |
|
[CCS_MAX_MAC_INDEX + CCS_USE_INET_RAW_SOCKET] |
126 |
|
= "capability::use_inet_ip", |
127 |
|
[CCS_MAX_MAC_INDEX + CCS_USE_ROUTE_SOCKET] |
128 |
|
= "capability::use_route", |
129 |
|
[CCS_MAX_MAC_INDEX + CCS_USE_PACKET_SOCKET] |
130 |
|
= "capability::use_packet", |
131 |
|
[CCS_MAX_MAC_INDEX + CCS_SYS_MOUNT] |
132 |
|
= "capability::SYS_MOUNT", |
133 |
|
[CCS_MAX_MAC_INDEX + CCS_SYS_UMOUNT] |
134 |
|
= "capability::SYS_UMOUNT", |
135 |
|
[CCS_MAX_MAC_INDEX + CCS_SYS_REBOOT] |
136 |
|
= "capability::SYS_REBOOT", |
137 |
|
[CCS_MAX_MAC_INDEX + CCS_SYS_CHROOT] |
138 |
|
= "capability::SYS_CHROOT", |
139 |
|
[CCS_MAX_MAC_INDEX + CCS_SYS_KILL] |
140 |
|
= "capability::SYS_KILL", |
141 |
|
[CCS_MAX_MAC_INDEX + CCS_SYS_VHANGUP] |
142 |
|
= "capability::SYS_VHANGUP", |
143 |
|
[CCS_MAX_MAC_INDEX + CCS_SYS_SETTIME] |
144 |
|
= "capability::SYS_TIME", |
145 |
|
[CCS_MAX_MAC_INDEX + CCS_SYS_NICE] |
146 |
|
= "capability::SYS_NICE", |
147 |
|
[CCS_MAX_MAC_INDEX + CCS_SYS_SETHOSTNAME] |
148 |
|
= "capability::SYS_SETHOSTNAME", |
149 |
|
[CCS_MAX_MAC_INDEX + CCS_USE_KERNEL_MODULE] |
150 |
|
= "capability::use_kernel_module", |
151 |
|
[CCS_MAX_MAC_INDEX + CCS_CREATE_FIFO] |
152 |
|
= "capability::create_fifo", |
153 |
|
[CCS_MAX_MAC_INDEX + CCS_CREATE_BLOCK_DEV] |
154 |
|
= "capability::create_block_dev", |
155 |
|
[CCS_MAX_MAC_INDEX + CCS_CREATE_CHAR_DEV] |
156 |
|
= "capability::create_char_dev", |
157 |
|
[CCS_MAX_MAC_INDEX + CCS_CREATE_UNIX_SOCKET] |
158 |
|
= "capability::create_unix_socket", |
159 |
|
[CCS_MAX_MAC_INDEX + CCS_SYS_LINK] |
160 |
|
= "capability::SYS_LINK", |
161 |
|
[CCS_MAX_MAC_INDEX + CCS_SYS_SYMLINK] |
162 |
|
= "capability::SYS_SYMLINK", |
163 |
|
[CCS_MAX_MAC_INDEX + CCS_SYS_RENAME] |
164 |
|
= "capability::SYS_RENAME", |
165 |
|
[CCS_MAX_MAC_INDEX + CCS_SYS_UNLINK] |
166 |
|
= "capability::SYS_UNLINK", |
167 |
|
[CCS_MAX_MAC_INDEX + CCS_SYS_CHMOD] |
168 |
|
= "capability::SYS_CHMOD", |
169 |
|
[CCS_MAX_MAC_INDEX + CCS_SYS_CHOWN] |
170 |
|
= "capability::SYS_CHOWN", |
171 |
|
[CCS_MAX_MAC_INDEX + CCS_SYS_IOCTL] |
172 |
|
= "capability::SYS_IOCTL", |
173 |
|
[CCS_MAX_MAC_INDEX + CCS_SYS_KEXEC_LOAD] |
174 |
|
= "capability::SYS_KEXEC_LOAD", |
175 |
|
[CCS_MAX_MAC_INDEX + CCS_SYS_PIVOT_ROOT] |
176 |
|
= "capability::SYS_PIVOT_ROOT", |
177 |
|
[CCS_MAX_MAC_INDEX + CCS_SYS_PTRACE] |
178 |
|
= "capability::SYS_PTRACE", |
179 |
|
[CCS_MAX_MAC_INDEX + CCS_CONCEAL_MOUNT] |
180 |
|
= "capability::conceal_mount", |
181 |
|
[CCS_MAX_MAC_INDEX + CCS_MAX_CAPABILITY_INDEX |
182 |
|
+ CCS_MAC_CATEGORY_FILE] = "file", |
183 |
|
[CCS_MAX_MAC_INDEX + CCS_MAX_CAPABILITY_INDEX |
184 |
|
+ CCS_MAC_CATEGORY_NETWORK] = "network", |
185 |
|
[CCS_MAX_MAC_INDEX + CCS_MAX_CAPABILITY_INDEX |
186 |
|
+ CCS_MAC_CATEGORY_MISC] = "misc", |
187 |
|
[CCS_MAX_MAC_INDEX + CCS_MAX_CAPABILITY_INDEX |
188 |
|
+ CCS_MAC_CATEGORY_IPC] = "ipc", |
189 |
|
[CCS_MAX_MAC_INDEX + CCS_MAX_CAPABILITY_INDEX |
190 |
|
+ CCS_MAC_CATEGORY_CAPABILITY] = "capability", |
191 |
}; |
}; |
192 |
|
|
193 |
/* Permit policy management by non-root user? */ |
/* Permit policy management by non-root user? */ |
194 |
static bool ccs_manage_by_non_root; |
static bool ccs_manage_by_non_root; |
195 |
|
|
196 |
/** |
/** |
197 |
* ccs_quiet_setup - Set CCS_VERBOSE=0 by default. |
* ccs_cap2keyword - Convert capability operation to capability name. |
198 |
* |
* |
199 |
* @str: Unused. |
* @operation: The capability index. |
200 |
* |
* |
201 |
* Returns 0. |
* Returns the name of the specified capability's name. |
202 |
*/ |
*/ |
203 |
static int __init ccs_quiet_setup(char *str) |
const char *ccs_cap2keyword(const u8 operation) |
204 |
{ |
{ |
205 |
ccs_control_array[CCS_VERBOSE].current_value = 0; |
return operation < CCS_MAX_CAPABILITY_INDEX |
206 |
return 0; |
? ccs_mac_keywords[CCS_MAX_MAC_INDEX + operation] + 12 : NULL; |
207 |
} |
} |
208 |
|
|
209 |
__setup("CCS_QUIET", ccs_quiet_setup); |
/** |
210 |
|
* ccs_yesno - Return "yes" or "no". |
211 |
|
* |
212 |
|
* @value: Bool value. |
213 |
|
*/ |
214 |
|
static const char *ccs_yesno(const unsigned int value) |
215 |
|
{ |
216 |
|
return value ? "yes" : "no"; |
217 |
|
} |
218 |
|
|
219 |
/** |
/** |
220 |
* ccs_io_printf - Transactional printf() to "struct ccs_io_buffer" structure. |
* ccs_io_printf - Transactional printf() to "struct ccs_io_buffer" structure. |
250 |
* |
* |
251 |
* Returns pointer to "struct ccs_profile" on success, NULL otherwise. |
* Returns pointer to "struct ccs_profile" on success, NULL otherwise. |
252 |
*/ |
*/ |
253 |
struct ccs_profile *ccs_find_or_assign_new_profile(const unsigned int |
static struct ccs_profile *ccs_find_or_assign_new_profile(const unsigned int |
254 |
profile) |
profile) |
255 |
{ |
{ |
256 |
struct ccs_profile *ptr; |
struct ccs_profile *ptr; |
257 |
struct ccs_profile *entry; |
struct ccs_profile *entry; |
258 |
int i; |
if (profile >= CCS_MAX_PROFILES) |
|
if (profile >= MAX_PROFILES) |
|
259 |
return NULL; |
return NULL; |
260 |
ptr = ccs_profile_ptr[profile]; |
ptr = ccs_profile_ptr[profile]; |
261 |
if (ptr) |
if (ptr) |
265 |
ptr = ccs_profile_ptr[profile]; |
ptr = ccs_profile_ptr[profile]; |
266 |
if (!ptr && ccs_memory_ok(entry, sizeof(*entry))) { |
if (!ptr && ccs_memory_ok(entry, sizeof(*entry))) { |
267 |
ptr = entry; |
ptr = entry; |
268 |
for (i = 0; i < CCS_MAX_CONTROL_INDEX; i++) |
#ifdef CONFIG_CCSECURITY_AUDIT |
269 |
ptr->value[i] = ccs_control_array[i].current_value; |
ptr->audit = &ccs_default_profile.preference; |
270 |
/* |
#endif |
271 |
* Needn't to initialize "ptr->capability_value" |
ptr->learning = &ccs_default_profile.preference; |
272 |
* because they are always 0. |
ptr->permissive = &ccs_default_profile.preference; |
273 |
*/ |
ptr->enforcing = &ccs_default_profile.preference; |
274 |
|
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; |
285 |
} |
} |
286 |
|
|
287 |
/** |
/** |
288 |
|
* ccs_check_profile - Check all profiles currently assigned to domains are defined. |
289 |
|
*/ |
290 |
|
void ccs_check_profile(void) |
291 |
|
{ |
292 |
|
struct ccs_domain_info *domain; |
293 |
|
ccs_policy_loaded = true; |
294 |
|
list_for_each_entry_rcu(domain, &ccs_domain_list, list) { |
295 |
|
const u8 profile = domain->profile; |
296 |
|
if (ccs_profile_ptr[profile]) |
297 |
|
continue; |
298 |
|
panic("Profile %u (used by '%s') not defined.\n", |
299 |
|
profile, domain->domainname->name); |
300 |
|
} |
301 |
|
} |
302 |
|
|
303 |
|
/** |
304 |
|
* ccs_profile - Find a profile. |
305 |
|
* |
306 |
|
* @profile: Profile number to find. |
307 |
|
* |
308 |
|
* Returns pointer to "struct ccs_profile". |
309 |
|
*/ |
310 |
|
struct ccs_profile *ccs_profile(const u8 profile) |
311 |
|
{ |
312 |
|
struct ccs_profile *ptr = ccs_profile_ptr[profile]; |
313 |
|
if (!ccs_policy_loaded) |
314 |
|
return &ccs_default_profile; |
315 |
|
BUG_ON(!ptr); |
316 |
|
return ptr; |
317 |
|
} |
318 |
|
|
319 |
|
/** |
320 |
* ccs_write_profile - Write profile table. |
* ccs_write_profile - Write profile table. |
321 |
* |
* |
322 |
* @head: Pointer to "struct ccs_io_buffer". |
* @head: Pointer to "struct ccs_io_buffer". |
327 |
{ |
{ |
328 |
char *data = head->write_buf; |
char *data = head->write_buf; |
329 |
unsigned int i; |
unsigned int i; |
330 |
unsigned int value; |
int value; |
331 |
|
int mode; |
332 |
|
u8 config; |
333 |
|
bool use_default = false; |
334 |
char *cp; |
char *cp; |
335 |
struct ccs_profile *ccs_profile; |
struct ccs_profile *profile; |
336 |
i = simple_strtoul(data, &cp, 10); |
i = simple_strtoul(data, &cp, 10); |
337 |
if (data != cp) { |
if (data == cp) { |
338 |
|
profile = &ccs_default_profile; |
339 |
|
} else { |
340 |
if (*cp != '-') |
if (*cp != '-') |
341 |
return -EINVAL; |
return -EINVAL; |
342 |
data = cp + 1; |
data = cp + 1; |
343 |
|
profile = ccs_find_or_assign_new_profile(i); |
344 |
|
if (!profile) |
345 |
|
return -EINVAL; |
346 |
} |
} |
|
ccs_profile = ccs_find_or_assign_new_profile(i); |
|
|
if (!ccs_profile) |
|
|
return -EINVAL; |
|
347 |
cp = strchr(data, '='); |
cp = strchr(data, '='); |
348 |
if (!cp) |
if (!cp) |
349 |
return -EINVAL; |
return -EINVAL; |
350 |
*cp = '\0'; |
*cp++ = '\0'; |
351 |
|
if (profile != &ccs_default_profile) |
352 |
|
use_default = strstr(cp, "use_default") != NULL; |
353 |
|
if (strstr(cp, "verbose=yes")) |
354 |
|
value = 1; |
355 |
|
else if (strstr(cp, "verbose=no")) |
356 |
|
value = 0; |
357 |
|
else |
358 |
|
value = -1; |
359 |
|
#ifdef CONFIG_CCSECURITY_AUDIT |
360 |
|
if (!strcmp(data, "PREFERENCE::audit")) { |
361 |
|
char *cp2; |
362 |
|
if (use_default) { |
363 |
|
profile->audit = &ccs_default_profile.preference; |
364 |
|
return 0; |
365 |
|
} |
366 |
|
profile->audit = &profile->preference; |
367 |
|
cp2 = strstr(cp, "max_grant_log="); |
368 |
|
if (cp2) |
369 |
|
sscanf(cp2 + 14, "%u", |
370 |
|
&profile->preference.audit_max_grant_log); |
371 |
|
cp2 = strstr(cp, "max_reject_log="); |
372 |
|
if (cp2) |
373 |
|
sscanf(cp2 + 15, "%u", |
374 |
|
&profile->preference.audit_max_reject_log); |
375 |
|
if (strstr(cp, "task_info=yes")) |
376 |
|
profile->preference.audit_task_info = true; |
377 |
|
else if (strstr(cp, "task_info=no")) |
378 |
|
profile->preference.audit_task_info = false; |
379 |
|
if (strstr(cp, "path_info=yes")) |
380 |
|
profile->preference.audit_path_info = true; |
381 |
|
else if (strstr(cp, "path_info=no")) |
382 |
|
profile->preference.audit_path_info = false; |
383 |
|
return 0; |
384 |
|
} |
385 |
|
#endif |
386 |
|
if (!strcmp(data, "PREFERENCE::enforcing")) { |
387 |
|
char *cp2; |
388 |
|
if (use_default) { |
389 |
|
profile->enforcing = &ccs_default_profile.preference; |
390 |
|
return 0; |
391 |
|
} |
392 |
|
profile->enforcing = &profile->preference; |
393 |
|
if (value >= 0) |
394 |
|
profile->preference.enforcing_verbose = value; |
395 |
|
cp2 = strstr(cp, "penalty="); |
396 |
|
if (cp2) |
397 |
|
sscanf(cp2 + 8, "%u", |
398 |
|
&profile->preference.enforcing_penalty); |
399 |
|
return 0; |
400 |
|
} |
401 |
|
if (!strcmp(data, "PREFERENCE::permissive")) { |
402 |
|
if (use_default) { |
403 |
|
profile->permissive = &ccs_default_profile.preference; |
404 |
|
return 0; |
405 |
|
} |
406 |
|
profile->permissive = &profile->preference; |
407 |
|
if (value >= 0) |
408 |
|
profile->preference.permissive_verbose = value; |
409 |
|
return 0; |
410 |
|
} |
411 |
|
if (!strcmp(data, "PREFERENCE::learning")) { |
412 |
|
char *cp2; |
413 |
|
if (use_default) { |
414 |
|
profile->learning = &ccs_default_profile.preference; |
415 |
|
return 0; |
416 |
|
} |
417 |
|
profile->learning = &profile->preference; |
418 |
|
if (value >= 0) |
419 |
|
profile->preference.learning_verbose = value; |
420 |
|
cp2 = strstr(cp, "max_entry="); |
421 |
|
if (cp2) |
422 |
|
sscanf(cp2 + 10, "%u", |
423 |
|
&profile->preference.learning_max_entry); |
424 |
|
if (strstr(cp, "exec.realpath=yes")) |
425 |
|
profile->preference.learning_exec_realpath = true; |
426 |
|
else if (strstr(cp, "exec.realpath=no")) |
427 |
|
profile->preference.learning_exec_realpath = false; |
428 |
|
if (strstr(cp, "exec.argv0=yes")) |
429 |
|
profile->preference.learning_exec_argv0 = true; |
430 |
|
else if (strstr(cp, "exec.argv0=no")) |
431 |
|
profile->preference.learning_exec_argv0 = false; |
432 |
|
if (strstr(cp, "symlink.target=yes")) |
433 |
|
profile->preference.learning_symlink_target = true; |
434 |
|
else if (strstr(cp, "symlink.target=no")) |
435 |
|
profile->preference.learning_symlink_target = false; |
436 |
|
return 0; |
437 |
|
} |
438 |
|
if (profile == &ccs_default_profile) |
439 |
|
return -EINVAL; |
440 |
if (!strcmp(data, "COMMENT")) { |
if (!strcmp(data, "COMMENT")) { |
441 |
const struct ccs_path_info *new_comment |
const struct ccs_path_info *new_comment = ccs_get_name(cp); |
|
= ccs_get_name(cp + 1); |
|
442 |
const struct ccs_path_info *old_comment; |
const struct ccs_path_info *old_comment; |
443 |
/* Protect reader from ccs_put_name(). */ |
/* Protect reader from ccs_put_name(). */ |
|
/***** CRITICAL SECTION START *****/ |
|
444 |
spin_lock(&ccs_profile_comment_lock); |
spin_lock(&ccs_profile_comment_lock); |
445 |
old_comment = ccs_profile->comment; |
old_comment = profile->comment; |
446 |
ccs_profile->comment = new_comment; |
profile->comment = new_comment; |
447 |
spin_unlock(&ccs_profile_comment_lock); |
spin_unlock(&ccs_profile_comment_lock); |
|
/***** CRITICAL SECTION END *****/ |
|
448 |
ccs_put_name(old_comment); |
ccs_put_name(old_comment); |
|
ccs_profile_entry_used[0] = true; |
|
449 |
return 0; |
return 0; |
450 |
} |
} |
451 |
if (ccs_str_starts(&data, KEYWORD_MAC_FOR_CAPABILITY)) { |
if (!strcmp(data, "CONFIG")) { |
452 |
if (sscanf(cp + 1, "%u", &value) != 1) { |
i = CCS_MAX_MAC_INDEX + CCS_MAX_CAPABILITY_INDEX |
453 |
for (i = 0; i < 4; i++) { |
+ CCS_MAX_MAC_CATEGORY_INDEX; |
454 |
if (strcmp(cp + 1, ccs_mode_4[i])) |
config = profile->default_config; |
455 |
continue; |
} else if (ccs_str_starts(&data, "CONFIG::")) { |
456 |
value = i; |
config = 0; |
457 |
break; |
for (i = 0; i < CCS_MAX_MAC_INDEX + CCS_MAX_CAPABILITY_INDEX |
458 |
} |
+ CCS_MAX_MAC_CATEGORY_INDEX; i++) { |
459 |
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])) |
|
460 |
continue; |
continue; |
461 |
ccs_profile->capability_value[i] = value; |
config = profile->config[i]; |
462 |
ccs_profile_entry_used[i + 1 + CCS_MAX_CONTROL_INDEX] |
break; |
|
= true; |
|
|
return 0; |
|
463 |
} |
} |
464 |
|
if (i == CCS_MAX_MAC_INDEX + CCS_MAX_CAPABILITY_INDEX |
465 |
|
+ CCS_MAX_MAC_CATEGORY_INDEX) |
466 |
|
return -EINVAL; |
467 |
|
} else { |
468 |
return -EINVAL; |
return -EINVAL; |
469 |
} |
} |
470 |
for (i = 0; i < CCS_MAX_CONTROL_INDEX; i++) { |
if (use_default) { |
471 |
if (strcmp(data, ccs_control_array[i].keyword)) |
config = CCS_CONFIG_USE_DEFAULT; |
472 |
continue; |
} else { |
473 |
if (sscanf(cp + 1, "%u", &value) != 1) { |
for (mode = 3; mode >= 0; mode--) |
474 |
int j; |
if (strstr(cp, ccs_mode_4[mode])) |
475 |
const char **modes; |
/* |
476 |
switch (i) { |
* Update lower 3 bits in order to distinguish |
477 |
case CCS_RESTRICT_AUTOBIND: |
* 'config' from 'CCS_CONFIG_USE_DEAFULT'. |
478 |
case CCS_VERBOSE: |
*/ |
479 |
modes = ccs_mode_2; |
config = (config & ~7) | mode; |
480 |
break; |
#ifdef CONFIG_CCSECURITY_AUDIT |
481 |
default: |
if (config != CCS_CONFIG_USE_DEFAULT) { |
482 |
modes = ccs_mode_4; |
if (strstr(cp, "grant_log=yes")) |
483 |
break; |
config |= CCS_CONFIG_WANT_GRANT_LOG; |
484 |
} |
else if (strstr(cp, "grant_log=no")) |
485 |
for (j = 0; j < 4; j++) { |
config &= ~CCS_CONFIG_WANT_GRANT_LOG; |
486 |
if (strcmp(cp + 1, modes[j])) |
if (strstr(cp, "reject_log=yes")) |
487 |
continue; |
config |= CCS_CONFIG_WANT_REJECT_LOG; |
488 |
value = j; |
else if (strstr(cp, "reject_log=no")) |
489 |
break; |
config &= ~CCS_CONFIG_WANT_REJECT_LOG; |
|
} |
|
|
if (j == 4) |
|
|
return -EINVAL; |
|
|
} else if (value > ccs_control_array[i].max_value) { |
|
|
value = ccs_control_array[i].max_value; |
|
490 |
} |
} |
491 |
ccs_profile->value[i] = value; |
#endif |
|
ccs_profile_entry_used[i + 1] = true; |
|
|
return 0; |
|
492 |
} |
} |
493 |
return -EINVAL; |
if (i < CCS_MAX_MAC_INDEX + CCS_MAX_CAPABILITY_INDEX |
494 |
|
+ CCS_MAX_MAC_CATEGORY_INDEX) |
495 |
|
profile->config[i] = config; |
496 |
|
else if (config != CCS_CONFIG_USE_DEFAULT) |
497 |
|
profile->default_config = config; |
498 |
|
return 0; |
499 |
} |
} |
500 |
|
|
501 |
/** |
/** |
502 |
* ccs_read_profile - Read profile table. |
* ccs_read_profile - Read profile table. |
503 |
* |
* |
504 |
* @head: Pointer to "struct ccs_io_buffer". |
* @head: Pointer to "struct ccs_io_buffer". |
|
* |
|
|
* Returns 0. |
|
505 |
*/ |
*/ |
506 |
static int ccs_read_profile(struct ccs_io_buffer *head) |
static void ccs_read_profile(struct ccs_io_buffer *head) |
507 |
{ |
{ |
508 |
static const int ccs_total |
int index; |
|
= CCS_MAX_CONTROL_INDEX + CCS_MAX_CAPABILITY_INDEX + 1; |
|
|
int step; |
|
509 |
if (head->read_eof) |
if (head->read_eof) |
510 |
return 0; |
return; |
511 |
for (step = head->read_step; step < MAX_PROFILES * ccs_total; step++) { |
if (head->read_bit) |
512 |
const u8 index = step / ccs_total; |
goto body; |
513 |
u8 type = step % ccs_total; |
ccs_io_printf(head, "PROFILE_VERSION=%s\n", "20090903"); |
514 |
const struct ccs_profile *ccs_profile = ccs_profile_ptr[index]; |
#ifdef CONFIG_CCSECURITY_AUDIT |
515 |
head->read_step = step; |
ccs_io_printf(head, "PREFERENCE::audit={ max_grant_log=%u " |
516 |
if (!ccs_profile) |
"max_reject_log=%u task_info=%s path_info=%s }\n", |
517 |
continue; |
ccs_default_profile.preference.audit_max_grant_log, |
518 |
if (!ccs_profile_entry_used[type]) |
ccs_default_profile.preference.audit_max_reject_log, |
519 |
continue; |
ccs_yesno(ccs_default_profile.preference. |
520 |
if (!type) { /* Print profile' comment tag. */ |
audit_task_info), |
521 |
bool done; |
ccs_yesno(ccs_default_profile.preference. |
522 |
/***** CRITICAL SECTION START *****/ |
audit_path_info)); |
523 |
spin_lock(&ccs_profile_comment_lock); |
#endif |
524 |
done = ccs_io_printf(head, "%u-COMMENT=%s\n", |
ccs_io_printf(head, "PREFERENCE::learning={ verbose=%s max_entry=%u " |
525 |
index, ccs_profile->comment ? |
"exec.realpath=%s exec.argv0=%s symlink.target=%s }\n", |
526 |
ccs_profile->comment->name : ""); |
ccs_yesno(ccs_default_profile.preference. |
527 |
spin_unlock(&ccs_profile_comment_lock); |
learning_verbose), |
528 |
/***** CRITICAL SECTION END *****/ |
ccs_default_profile.preference.learning_max_entry, |
529 |
if (!done) |
ccs_yesno(ccs_default_profile.preference. |
530 |
break; |
learning_exec_realpath), |
531 |
|
ccs_yesno(ccs_default_profile.preference. |
532 |
|
learning_exec_argv0), |
533 |
|
ccs_yesno(ccs_default_profile.preference. |
534 |
|
learning_symlink_target)); |
535 |
|
ccs_io_printf(head, "PREFERENCE::permissive={ verbose=%s }\n", |
536 |
|
ccs_yesno(ccs_default_profile.preference. |
537 |
|
permissive_verbose)); |
538 |
|
ccs_io_printf(head, "PREFERENCE::enforcing={ verbose=%s penalty=%u " |
539 |
|
"}\n", |
540 |
|
ccs_yesno(ccs_default_profile.preference. |
541 |
|
enforcing_verbose), |
542 |
|
ccs_default_profile.preference.enforcing_penalty); |
543 |
|
head->read_bit = 1; |
544 |
|
body: |
545 |
|
for (index = head->read_step; index < CCS_MAX_PROFILES; index++) { |
546 |
|
bool done; |
547 |
|
u8 config; |
548 |
|
int i; |
549 |
|
int pos; |
550 |
|
const struct ccs_profile *profile = ccs_profile_ptr[index]; |
551 |
|
head->read_step = index; |
552 |
|
if (!profile) |
553 |
continue; |
continue; |
554 |
|
pos = head->read_avail; |
555 |
|
spin_lock(&ccs_profile_comment_lock); |
556 |
|
done = ccs_io_printf(head, "%u-COMMENT=%s\n", index, |
557 |
|
profile->comment ? profile->comment->name |
558 |
|
: ""); |
559 |
|
spin_unlock(&ccs_profile_comment_lock); |
560 |
|
if (!done) |
561 |
|
goto out; |
562 |
|
config = profile->default_config; |
563 |
|
#ifdef CONFIG_CCSECURITY_AUDIT |
564 |
|
if (!ccs_io_printf(head, "%u-CONFIG={ mode=%s grant_log=%s " |
565 |
|
"reject_log=%s }\n", index, |
566 |
|
ccs_mode_4[config & 3], |
567 |
|
ccs_yesno(config & |
568 |
|
CCS_CONFIG_WANT_GRANT_LOG), |
569 |
|
ccs_yesno(config & |
570 |
|
CCS_CONFIG_WANT_REJECT_LOG))) |
571 |
|
goto out; |
572 |
|
#else |
573 |
|
if (!ccs_io_printf(head, "%u-CONFIG={ mode=%s }\n", index, |
574 |
|
ccs_mode_4[config & 3])) |
575 |
|
goto out; |
576 |
|
#endif |
577 |
|
for (i = 0; i < CCS_MAX_MAC_INDEX + CCS_MAX_CAPABILITY_INDEX |
578 |
|
+ CCS_MAX_MAC_CATEGORY_INDEX; i++) { |
579 |
|
#ifdef CONFIG_CCSECURITY_AUDIT |
580 |
|
const char *g; |
581 |
|
const char *r; |
582 |
|
#endif |
583 |
|
config = profile->config[i]; |
584 |
|
if (config == CCS_CONFIG_USE_DEFAULT) |
585 |
|
continue; |
586 |
|
#ifdef CONFIG_CCSECURITY_AUDIT |
587 |
|
g = ccs_yesno(config & CCS_CONFIG_WANT_GRANT_LOG); |
588 |
|
r = ccs_yesno(config & CCS_CONFIG_WANT_REJECT_LOG); |
589 |
|
if (!ccs_io_printf(head, "%u-CONFIG::%s={ mode=%s " |
590 |
|
"grant_log=%s reject_log=%s }\n", |
591 |
|
index, ccs_mac_keywords[i], |
592 |
|
ccs_mode_4[config & 3], g, r)) |
593 |
|
goto out; |
594 |
|
#else |
595 |
|
if (!ccs_io_printf(head, "%u-CONFIG::%s={ mode=%s }\n", |
596 |
|
index, ccs_mac_keywords[i], |
597 |
|
ccs_mode_4[config & 3])) |
598 |
|
goto out; |
599 |
|
#endif |
600 |
} |
} |
601 |
type--; |
#ifdef CONFIG_CCSECURITY_AUDIT |
602 |
if (type >= CCS_MAX_CONTROL_INDEX) { |
if (profile->audit != &ccs_default_profile.preference && |
603 |
const int i = type - CCS_MAX_CONTROL_INDEX; |
!ccs_io_printf(head, "%u-PREFERENCE::audit={ " |
604 |
const u8 value = ccs_profile->capability_value[i]; |
"max_grant_log=%u max_reject_log=%u " |
605 |
if (!ccs_io_printf(head, |
"task_info=%s path_info=%s }\n", index, |
606 |
"%u-" KEYWORD_MAC_FOR_CAPABILITY |
profile->preference.audit_max_grant_log, |
607 |
"%s=%s\n", index, |
profile->preference.audit_max_reject_log, |
608 |
ccs_capability_control_keyword[i], |
ccs_yesno(profile->preference. |
609 |
ccs_mode_4[value])) |
audit_task_info), |
610 |
break; |
ccs_yesno(profile->preference. |
611 |
} else { |
audit_path_info))) |
612 |
const unsigned int value = ccs_profile->value[type]; |
goto out; |
613 |
const char **modes = NULL; |
#endif |
614 |
const char *keyword = ccs_control_array[type].keyword; |
if (profile->learning != &ccs_default_profile.preference && |
615 |
switch (ccs_control_array[type].max_value) { |
!ccs_io_printf(head, "%u-PREFERENCE::learning={ " |
616 |
case 3: |
"verbose=%s max_entry=%u exec.realpath=%s " |
617 |
modes = ccs_mode_4; |
"exec.argv0=%s symlink.target=%s }\n", |
618 |
break; |
index, |
619 |
case 1: |
ccs_yesno(profile->preference. |
620 |
modes = ccs_mode_2; |
learning_verbose), |
621 |
break; |
profile->preference.learning_max_entry, |
622 |
} |
ccs_yesno(profile->preference. |
623 |
if (modes) { |
learning_exec_realpath), |
624 |
if (!ccs_io_printf(head, "%u-%s=%s\n", index, |
ccs_yesno(profile->preference. |
625 |
keyword, modes[value])) |
learning_exec_argv0), |
626 |
break; |
ccs_yesno(profile->preference. |
627 |
} else { |
learning_symlink_target))) |
628 |
if (!ccs_io_printf(head, "%u-%s=%u\n", index, |
goto out; |
629 |
keyword, value)) |
if (profile->permissive != &ccs_default_profile.preference && |
630 |
break; |
!ccs_io_printf(head, "%u-PREFERENCE::permissive={ " |
631 |
} |
"verbose=%s }\n", index, |
632 |
} |
ccs_yesno(profile->preference. |
633 |
|
permissive_verbose))) |
634 |
|
goto out; |
635 |
|
if (profile->enforcing != &ccs_default_profile.preference && |
636 |
|
!ccs_io_printf(head, "%u-PREFERENCE::enforcing={ " |
637 |
|
"verbose=%s penalty=%u }\n", index, |
638 |
|
ccs_yesno(profile->preference. |
639 |
|
enforcing_verbose), |
640 |
|
profile->preference.enforcing_penalty)) |
641 |
|
goto out; |
642 |
|
continue; |
643 |
|
out: |
644 |
|
head->read_avail = pos; |
645 |
|
break; |
646 |
} |
} |
647 |
if (step == MAX_PROFILES * ccs_total) |
if (index == CCS_MAX_PROFILES) |
648 |
head->read_eof = true; |
head->read_eof = true; |
|
return 0; |
|
649 |
} |
} |
650 |
|
|
651 |
/* The list for "struct ccs_policy_manager_entry". */ |
/* The list for "struct ccs_policy_manager_entry". */ |
663 |
{ |
{ |
664 |
struct ccs_policy_manager_entry *entry = NULL; |
struct ccs_policy_manager_entry *entry = NULL; |
665 |
struct ccs_policy_manager_entry *ptr; |
struct ccs_policy_manager_entry *ptr; |
666 |
const struct ccs_path_info *saved_manager; |
struct ccs_policy_manager_entry e = { }; |
667 |
int error = is_delete ? -ENOENT : -ENOMEM; |
int error = is_delete ? -ENOENT : -ENOMEM; |
|
bool is_domain = false; |
|
668 |
if (ccs_is_domain_def(manager)) { |
if (ccs_is_domain_def(manager)) { |
669 |
if (!ccs_is_correct_domain(manager)) |
if (!ccs_is_correct_domain(manager)) |
670 |
return -EINVAL; |
return -EINVAL; |
671 |
is_domain = true; |
e.is_domain = true; |
672 |
} else { |
} else { |
673 |
if (!ccs_is_correct_path(manager, 1, -1, -1)) |
if (!ccs_is_correct_path(manager, 1, -1, -1)) |
674 |
return -EINVAL; |
return -EINVAL; |
675 |
} |
} |
676 |
saved_manager = ccs_get_name(manager); |
e.manager = ccs_get_name(manager); |
677 |
if (!saved_manager) |
if (!e.manager) |
678 |
return -ENOMEM; |
return -ENOMEM; |
679 |
if (!is_delete) |
if (!is_delete) |
680 |
entry = kzalloc(sizeof(*entry), GFP_KERNEL); |
entry = kmalloc(sizeof(e), GFP_KERNEL); |
681 |
mutex_lock(&ccs_policy_lock); |
mutex_lock(&ccs_policy_lock); |
682 |
list_for_each_entry_rcu(ptr, &ccs_policy_manager_list, list) { |
list_for_each_entry_rcu(ptr, &ccs_policy_manager_list, list) { |
683 |
if (ptr->manager != saved_manager) |
if (ptr->manager != e.manager) |
684 |
continue; |
continue; |
685 |
ptr->is_deleted = is_delete; |
ptr->is_deleted = is_delete; |
686 |
error = 0; |
error = 0; |
687 |
break; |
break; |
688 |
} |
} |
689 |
if (!is_delete && error && ccs_memory_ok(entry, sizeof(*entry))) { |
if (!is_delete && error && ccs_commit_ok(entry, &e, sizeof(e))) { |
|
entry->manager = saved_manager; |
|
|
saved_manager = NULL; |
|
|
entry->is_domain = is_domain; |
|
690 |
list_add_tail_rcu(&entry->list, &ccs_policy_manager_list); |
list_add_tail_rcu(&entry->list, &ccs_policy_manager_list); |
691 |
entry = NULL; |
entry = NULL; |
692 |
error = 0; |
error = 0; |
693 |
} |
} |
694 |
mutex_unlock(&ccs_policy_lock); |
mutex_unlock(&ccs_policy_lock); |
695 |
ccs_put_name(saved_manager); |
ccs_put_name(e.manager); |
696 |
kfree(entry); |
kfree(entry); |
697 |
return error; |
return error; |
698 |
} |
} |
707 |
static int ccs_write_manager_policy(struct ccs_io_buffer *head) |
static int ccs_write_manager_policy(struct ccs_io_buffer *head) |
708 |
{ |
{ |
709 |
char *data = head->write_buf; |
char *data = head->write_buf; |
710 |
bool is_delete = ccs_str_starts(&data, KEYWORD_DELETE); |
bool is_delete = ccs_str_starts(&data, CCS_KEYWORD_DELETE); |
711 |
if (!strcmp(data, "manage_by_non_root")) { |
if (!strcmp(data, "manage_by_non_root")) { |
712 |
ccs_manage_by_non_root = !is_delete; |
ccs_manage_by_non_root = !is_delete; |
713 |
return 0; |
return 0; |
720 |
* |
* |
721 |
* @head: Pointer to "struct ccs_io_buffer". |
* @head: Pointer to "struct ccs_io_buffer". |
722 |
* |
* |
|
* Returns 0. |
|
|
* |
|
723 |
* Caller holds ccs_read_lock(). |
* Caller holds ccs_read_lock(). |
724 |
*/ |
*/ |
725 |
static int ccs_read_manager_policy(struct ccs_io_buffer *head) |
static void ccs_read_manager_policy(struct ccs_io_buffer *head) |
726 |
{ |
{ |
727 |
struct list_head *pos; |
struct list_head *pos; |
|
ccs_check_read_lock(); |
|
728 |
if (head->read_eof) |
if (head->read_eof) |
729 |
return 0; |
return; |
730 |
list_for_each_cookie(pos, head->read_var2, &ccs_policy_manager_list) { |
list_for_each_cookie(pos, head->read_var2, &ccs_policy_manager_list) { |
731 |
struct ccs_policy_manager_entry *ptr; |
struct ccs_policy_manager_entry *ptr; |
732 |
ptr = list_entry(pos, struct ccs_policy_manager_entry, list); |
ptr = list_entry(pos, struct ccs_policy_manager_entry, list); |
733 |
if (ptr->is_deleted) |
if (ptr->is_deleted) |
734 |
continue; |
continue; |
735 |
if (!ccs_io_printf(head, "%s\n", ptr->manager->name)) |
if (!ccs_io_printf(head, "%s\n", ptr->manager->name)) |
736 |
return 0; |
return; |
737 |
} |
} |
738 |
head->read_eof = true; |
head->read_eof = true; |
|
return 0; |
|
739 |
} |
} |
740 |
|
|
741 |
/** |
/** |
754 |
const struct ccs_path_info *domainname |
const struct ccs_path_info *domainname |
755 |
= ccs_current_domain()->domainname; |
= ccs_current_domain()->domainname; |
756 |
bool found = false; |
bool found = false; |
|
ccs_check_read_lock(); |
|
757 |
if (!ccs_policy_loaded) |
if (!ccs_policy_loaded) |
758 |
return true; |
return true; |
759 |
if (task->ccs_flags & CCS_TASK_IS_POLICY_MANAGER) |
if (task->ccs_flags & CCS_TASK_IS_POLICY_MANAGER) |
834 |
{ |
{ |
835 |
unsigned int pid; |
unsigned int pid; |
836 |
struct ccs_domain_info *domain = NULL; |
struct ccs_domain_info *domain = NULL; |
837 |
ccs_check_read_lock(); |
bool global_pid = false; |
838 |
if (!strcmp(data, "allow_execute")) { |
if (!strcmp(data, "allow_execute")) { |
839 |
head->read_execute_only = true; |
head->read_execute_only = true; |
840 |
return true; |
return true; |
841 |
} |
} |
842 |
if (sscanf(data, "pid=%u", &pid) == 1) { |
if (sscanf(data, "pid=%u", &pid) == 1 || |
843 |
|
(global_pid = true, sscanf(data, "global-pid=%u", &pid) == 1)) { |
844 |
struct task_struct *p; |
struct task_struct *p; |
|
/***** CRITICAL SECTION START *****/ |
|
845 |
read_lock(&tasklist_lock); |
read_lock(&tasklist_lock); |
846 |
|
#if LINUX_VERSION_CODE >= KERNEL_VERSION(2, 6, 24) |
847 |
|
if (global_pid) |
848 |
|
p = find_task_by_pid_ns(pid, &init_pid_ns); |
849 |
|
else |
850 |
|
p = find_task_by_vpid(pid); |
851 |
|
#else |
852 |
p = find_task_by_pid(pid); |
p = find_task_by_pid(pid); |
853 |
|
#endif |
854 |
if (p) |
if (p) |
855 |
domain = ccs_task_domain(p); |
domain = ccs_task_domain(p); |
856 |
read_unlock(&tasklist_lock); |
read_unlock(&tasklist_lock); |
|
/***** CRITICAL SECTION END *****/ |
|
857 |
} else if (!strncmp(data, "domain=", 7)) { |
} else if (!strncmp(data, "domain=", 7)) { |
858 |
if (ccs_is_domain_def(data + 7)) |
if (ccs_is_domain_def(data + 7)) |
859 |
domain = ccs_find_domain(data + 7); |
domain = ccs_find_domain(data + 7); |
884 |
return true; |
return true; |
885 |
} |
} |
886 |
|
|
887 |
|
static int ccs_write_domain_policy2(char *data, struct ccs_domain_info *domain, |
888 |
|
struct ccs_condition *cond, |
889 |
|
const bool is_delete) |
890 |
|
{ |
891 |
|
if (ccs_str_starts(&data, CCS_KEYWORD_ALLOW_CAPABILITY)) |
892 |
|
return ccs_write_capability_policy(data, domain, cond, |
893 |
|
is_delete); |
894 |
|
if (ccs_str_starts(&data, CCS_KEYWORD_ALLOW_NETWORK)) |
895 |
|
return ccs_write_network_policy(data, domain, cond, is_delete); |
896 |
|
if (ccs_str_starts(&data, CCS_KEYWORD_ALLOW_SIGNAL)) |
897 |
|
return ccs_write_signal_policy(data, domain, cond, is_delete); |
898 |
|
if (ccs_str_starts(&data, CCS_KEYWORD_ALLOW_ENV)) |
899 |
|
return ccs_write_env_policy(data, domain, cond, is_delete); |
900 |
|
if (ccs_str_starts(&data, CCS_KEYWORD_ALLOW_MOUNT)) |
901 |
|
return ccs_write_mount_policy(data, domain, cond, is_delete); |
902 |
|
if (ccs_str_starts(&data, CCS_KEYWORD_ALLOW_UNMOUNT)) |
903 |
|
return ccs_write_umount_policy(data, domain, cond, is_delete); |
904 |
|
if (ccs_str_starts(&data, CCS_KEYWORD_ALLOW_CHROOT)) |
905 |
|
return ccs_write_chroot_policy(data, domain, cond, is_delete); |
906 |
|
if (ccs_str_starts(&data, CCS_KEYWORD_ALLOW_PIVOT_ROOT)) |
907 |
|
return ccs_write_pivot_root_policy(data, domain, cond, |
908 |
|
is_delete); |
909 |
|
return ccs_write_file_policy(data, domain, cond, is_delete); |
910 |
|
} |
911 |
|
|
912 |
/** |
/** |
913 |
* ccs_write_domain_policy - Write domain policy. |
* ccs_write_domain_policy - Write domain policy. |
914 |
* |
* |
926 |
struct ccs_condition *cond = NULL; |
struct ccs_condition *cond = NULL; |
927 |
char *cp; |
char *cp; |
928 |
int error; |
int error; |
929 |
if (ccs_str_starts(&data, KEYWORD_DELETE)) |
if (ccs_str_starts(&data, CCS_KEYWORD_DELETE)) |
930 |
is_delete = true; |
is_delete = true; |
931 |
else if (ccs_str_starts(&data, KEYWORD_SELECT)) |
else if (ccs_str_starts(&data, CCS_KEYWORD_SELECT)) |
932 |
is_select = true; |
is_select = true; |
933 |
if (is_select && ccs_is_select_one(head, data)) |
if (is_select && ccs_is_select_one(head, data)) |
934 |
return 0; |
return 0; |
949 |
if (!domain) |
if (!domain) |
950 |
return -EINVAL; |
return -EINVAL; |
951 |
|
|
952 |
if (sscanf(data, KEYWORD_USE_PROFILE "%u", &profile) == 1 |
if (sscanf(data, CCS_KEYWORD_USE_PROFILE "%u", &profile) == 1 |
953 |
&& profile < MAX_PROFILES) { |
&& profile < CCS_MAX_PROFILES) { |
954 |
if (ccs_profile_ptr[profile] || !ccs_policy_loaded) |
if (!ccs_policy_loaded || ccs_profile_ptr[(u8) profile]) |
955 |
domain->profile = (u8) profile; |
domain->profile = (u8) profile; |
956 |
return 0; |
return 0; |
957 |
} |
} |
958 |
if (!strcmp(data, KEYWORD_IGNORE_GLOBAL_ALLOW_READ)) { |
if (!strcmp(data, CCS_KEYWORD_IGNORE_GLOBAL_ALLOW_READ)) { |
959 |
domain->ignore_global_allow_read = !is_delete; |
domain->ignore_global_allow_read = !is_delete; |
960 |
return 0; |
return 0; |
961 |
} |
} |
962 |
if (!strcmp(data, KEYWORD_IGNORE_GLOBAL_ALLOW_ENV)) { |
if (!strcmp(data, CCS_KEYWORD_IGNORE_GLOBAL_ALLOW_ENV)) { |
963 |
domain->ignore_global_allow_env = !is_delete; |
domain->ignore_global_allow_env = !is_delete; |
964 |
return 0; |
return 0; |
965 |
} |
} |
969 |
if (!cond) |
if (!cond) |
970 |
return -EINVAL; |
return -EINVAL; |
971 |
} |
} |
972 |
if (ccs_str_starts(&data, KEYWORD_ALLOW_CAPABILITY)) |
error = ccs_write_domain_policy2(data, domain, cond, is_delete); |
|
error = ccs_write_capability_policy(data, domain, cond, |
|
|
is_delete); |
|
|
else if (ccs_str_starts(&data, KEYWORD_ALLOW_NETWORK)) |
|
|
error = ccs_write_network_policy(data, domain, cond, is_delete); |
|
|
else if (ccs_str_starts(&data, KEYWORD_ALLOW_SIGNAL)) |
|
|
error = ccs_write_signal_policy(data, domain, cond, is_delete); |
|
|
else if (ccs_str_starts(&data, KEYWORD_ALLOW_ARGV0)) |
|
|
error = ccs_write_argv0_policy(data, domain, cond, is_delete); |
|
|
else if (ccs_str_starts(&data, KEYWORD_ALLOW_ENV)) |
|
|
error = ccs_write_env_policy(data, domain, cond, is_delete); |
|
|
else if (ccs_str_starts(&data, KEYWORD_ALLOW_MOUNT)) |
|
|
error = ccs_write_mount_policy(data, domain, cond, is_delete); |
|
|
else if (ccs_str_starts(&data, KEYWORD_ALLOW_UNMOUNT)) |
|
|
error = ccs_write_umount_policy(data, domain, cond, is_delete); |
|
|
else if (ccs_str_starts(&data, KEYWORD_ALLOW_CHROOT)) |
|
|
error = ccs_write_chroot_policy(data, domain, cond, is_delete); |
|
|
else if (ccs_str_starts(&data, 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); |
|
973 |
if (cond) |
if (cond) |
974 |
ccs_put_condition(cond); |
ccs_put_condition(cond); |
975 |
return error; |
return error; |
976 |
} |
} |
977 |
|
|
978 |
|
/** |
979 |
|
* ccs_print_name_union - Print a ccs_name_union. |
980 |
|
* |
981 |
|
* @head: Pointer to "struct ccs_io_buffer". |
982 |
|
* @ptr: Pointer to "struct ccs_name_union". |
983 |
|
* |
984 |
|
* Returns true on success, false otherwise. |
985 |
|
*/ |
986 |
static bool ccs_print_name_union(struct ccs_io_buffer *head, |
static bool ccs_print_name_union(struct ccs_io_buffer *head, |
987 |
struct ccs_name_union *ptr) |
const struct ccs_name_union *ptr) |
988 |
{ |
{ |
989 |
const int pos = head->read_avail; |
int pos = head->read_avail; |
990 |
if (pos && head->read_buf[pos - 1] == ' ') |
if (pos && head->read_buf[pos - 1] == ' ') |
991 |
head->read_avail--; |
head->read_avail--; |
992 |
if (ptr->is_group) |
if (ptr->is_group) |
995 |
return ccs_io_printf(head, " %s", ptr->filename->name); |
return ccs_io_printf(head, " %s", ptr->filename->name); |
996 |
} |
} |
997 |
|
|
998 |
static bool ccs_print_number_union(struct ccs_io_buffer *head, |
/** |
999 |
struct ccs_number_union *ptr) |
* ccs_print_name_union_quoted - Print a ccs_name_union with double quotes. |
1000 |
|
* |
1001 |
|
* @head: Pointer to "struct ccs_io_buffer". |
1002 |
|
* @ptr: Pointer to "struct ccs_name_union". |
1003 |
|
* |
1004 |
|
* Returns true on success, false otherwise. |
1005 |
|
*/ |
1006 |
|
static bool ccs_print_name_union_quoted(struct ccs_io_buffer *head, |
1007 |
|
const struct ccs_name_union *ptr) |
1008 |
|
{ |
1009 |
|
if (ptr->is_group) |
1010 |
|
return ccs_io_printf(head, "@%s", |
1011 |
|
ptr->group->group_name->name); |
1012 |
|
return ccs_io_printf(head, "\"%s\"", ptr->filename->name); |
1013 |
|
} |
1014 |
|
|
1015 |
|
/** |
1016 |
|
* ccs_print_number_union_common - Print a ccs_number_union. |
1017 |
|
* |
1018 |
|
* @head: Pointer to "struct ccs_io_buffer". |
1019 |
|
* @ptr: Pointer to "struct ccs_number_union". |
1020 |
|
* @need_space: True if a space character is needed. |
1021 |
|
* |
1022 |
|
* Returns true on success, false otherwise. |
1023 |
|
*/ |
1024 |
|
static bool ccs_print_number_union_common(struct ccs_io_buffer *head, |
1025 |
|
const struct ccs_number_union *ptr, |
1026 |
|
const bool need_space) |
1027 |
{ |
{ |
1028 |
unsigned long min; |
unsigned long min; |
1029 |
unsigned long max; |
unsigned long max; |
1030 |
|
u8 min_type; |
1031 |
|
u8 max_type; |
1032 |
|
if (need_space && !ccs_io_printf(head, " ")) |
1033 |
|
return false; |
1034 |
if (ptr->is_group) |
if (ptr->is_group) |
1035 |
return ccs_io_printf(head, " @%s", |
return ccs_io_printf(head, "@%s", |
1036 |
ptr->group->group_name->name); |
ptr->group->group_name->name); |
1037 |
|
min_type = ptr->min_type; |
1038 |
|
max_type = ptr->max_type; |
1039 |
min = ptr->values[0]; |
min = ptr->values[0]; |
1040 |
max = ptr->values[1]; |
max = ptr->values[1]; |
1041 |
if (min == max) |
switch (min_type) { |
1042 |
return ccs_io_printf(head, " %lu", min); |
case CCS_VALUE_TYPE_HEXADECIMAL: |
1043 |
return ccs_io_printf(head, " %lu-%lu", min, max); |
if (!ccs_io_printf(head, "0x%lX", min)) |
1044 |
|
return false; |
1045 |
|
break; |
1046 |
|
case CCS_VALUE_TYPE_OCTAL: |
1047 |
|
if (!ccs_io_printf(head, "0%lo", min)) |
1048 |
|
return false; |
1049 |
|
break; |
1050 |
|
default: |
1051 |
|
if (!ccs_io_printf(head, "%lu", min)) |
1052 |
|
return false; |
1053 |
|
break; |
1054 |
|
} |
1055 |
|
if (min == max && min_type == max_type) |
1056 |
|
return true; |
1057 |
|
switch (max_type) { |
1058 |
|
case CCS_VALUE_TYPE_HEXADECIMAL: |
1059 |
|
return ccs_io_printf(head, "-0x%lX", max); |
1060 |
|
case CCS_VALUE_TYPE_OCTAL: |
1061 |
|
return ccs_io_printf(head, "-0%lo", max); |
1062 |
|
default: |
1063 |
|
return ccs_io_printf(head, "-%lu", max); |
1064 |
|
} |
1065 |
|
} |
1066 |
|
|
1067 |
|
/** |
1068 |
|
* ccs_print_number_union - Print a ccs_number_union. |
1069 |
|
* |
1070 |
|
* @head: Pointer to "struct ccs_io_buffer". |
1071 |
|
* @ptr: Pointer to "struct ccs_number_union". |
1072 |
|
* |
1073 |
|
* Returns true on success, false otherwise. |
1074 |
|
*/ |
1075 |
|
bool ccs_print_number_union(struct ccs_io_buffer *head, |
1076 |
|
const struct ccs_number_union *ptr) |
1077 |
|
{ |
1078 |
|
return ccs_print_number_union_common(head, ptr, true); |
1079 |
} |
} |
1080 |
|
|
1081 |
/** |
/** |
1082 |
* ccs_print_single_path_acl - Print a single path ACL entry. |
* ccs_print_number_union_nospace - Print a ccs_number_union without a space character. |
1083 |
|
* |
1084 |
|
* @head: Pointer to "struct ccs_io_buffer". |
1085 |
|
* @ptr: Pointer to "struct ccs_number_union". |
1086 |
|
* |
1087 |
|
* Returns true on success, false otherwise. |
1088 |
|
*/ |
1089 |
|
static bool ccs_print_number_union_nospace(struct ccs_io_buffer *head, |
1090 |
|
const struct ccs_number_union *ptr) |
1091 |
|
{ |
1092 |
|
return ccs_print_number_union_common(head, ptr, false); |
1093 |
|
} |
1094 |
|
|
1095 |
|
/** |
1096 |
|
* ccs_print_condition - Print condition part. |
1097 |
* |
* |
1098 |
* @head: Pointer to "struct ccs_io_buffer". |
* @head: Pointer to "struct ccs_io_buffer". |
|
* @ptr: Pointer to "struct ccs_single_path_acl_record". |
|
1099 |
* @cond: Pointer to "struct ccs_condition". May be NULL. |
* @cond: Pointer to "struct ccs_condition". May be NULL. |
1100 |
* |
* |
1101 |
* Returns true on success, false otherwise. |
* Returns true on success, false otherwise. |
1102 |
*/ |
*/ |
1103 |
static bool ccs_print_single_path_acl(struct ccs_io_buffer *head, |
static bool ccs_print_condition(struct ccs_io_buffer *head, |
1104 |
struct ccs_single_path_acl_record *ptr, |
const struct ccs_condition *cond) |
1105 |
const struct ccs_condition *cond) |
{ |
1106 |
|
const struct ccs_condition_element *condp; |
1107 |
|
const struct ccs_number_union *numbers_p; |
1108 |
|
const struct ccs_name_union *names_p; |
1109 |
|
const struct ccs_argv_entry *argv; |
1110 |
|
const struct ccs_envp_entry *envp; |
1111 |
|
u16 condc; |
1112 |
|
u16 i; |
1113 |
|
u16 j; |
1114 |
|
char buffer[32]; |
1115 |
|
if (!cond) |
1116 |
|
goto no_condition; |
1117 |
|
condc = cond->condc; |
1118 |
|
condp = (const struct ccs_condition_element *) (cond + 1); |
1119 |
|
numbers_p = (const struct ccs_number_union *) (condp + condc); |
1120 |
|
names_p = (const struct ccs_name_union *) |
1121 |
|
(numbers_p + cond->numbers_count); |
1122 |
|
argv = (const struct ccs_argv_entry *) (names_p + cond->names_count); |
1123 |
|
envp = (const struct ccs_envp_entry *) (argv + cond->argc); |
1124 |
|
memset(buffer, 0, sizeof(buffer)); |
1125 |
|
if (condc && !ccs_io_printf(head, "%s", " if")) |
1126 |
|
goto out; |
1127 |
|
for (i = 0; i < condc; i++) { |
1128 |
|
const u8 match = condp->equals; |
1129 |
|
const u8 left = condp->left; |
1130 |
|
const u8 right = condp->right; |
1131 |
|
condp++; |
1132 |
|
switch (left) { |
1133 |
|
case CCS_ARGV_ENTRY: |
1134 |
|
if (!ccs_io_printf(head, " exec.argv[%u]%s\"%s\"", |
1135 |
|
argv->index, argv->is_not ? |
1136 |
|
"!=" : "=", argv->value->name)) |
1137 |
|
goto out; |
1138 |
|
argv++; |
1139 |
|
continue; |
1140 |
|
case CCS_ENVP_ENTRY: |
1141 |
|
if (!ccs_io_printf(head, " exec.envp[\"%s\"]%s", |
1142 |
|
envp->name->name, envp->is_not ? |
1143 |
|
"!=" : "=")) |
1144 |
|
goto out; |
1145 |
|
if (envp->value) { |
1146 |
|
if (!ccs_io_printf(head, "\"%s\"", |
1147 |
|
envp->value->name)) |
1148 |
|
goto out; |
1149 |
|
} else { |
1150 |
|
if (!ccs_io_printf(head, "NULL")) |
1151 |
|
goto out; |
1152 |
|
} |
1153 |
|
envp++; |
1154 |
|
continue; |
1155 |
|
case CCS_NUMBER_UNION: |
1156 |
|
if (!ccs_print_number_union(head, numbers_p++)) |
1157 |
|
goto out; |
1158 |
|
break; |
1159 |
|
default: |
1160 |
|
if (left >= CCS_MAX_CONDITION_KEYWORD) |
1161 |
|
goto out; |
1162 |
|
if (!ccs_io_printf(head, " %s", |
1163 |
|
ccs_condition_keyword[left])) |
1164 |
|
goto out; |
1165 |
|
break; |
1166 |
|
} |
1167 |
|
if (!ccs_io_printf(head, "%s", match ? "=" : "!=")) |
1168 |
|
goto out; |
1169 |
|
switch (right) { |
1170 |
|
case CCS_NAME_UNION: |
1171 |
|
if (!ccs_print_name_union_quoted(head, names_p++)) |
1172 |
|
goto out; |
1173 |
|
break; |
1174 |
|
case CCS_NUMBER_UNION: |
1175 |
|
if (!ccs_print_number_union_nospace(head, numbers_p++)) |
1176 |
|
goto out; |
1177 |
|
break; |
1178 |
|
default: |
1179 |
|
if (right >= CCS_MAX_CONDITION_KEYWORD) |
1180 |
|
goto out; |
1181 |
|
if (!ccs_io_printf(head, "%s", |
1182 |
|
ccs_condition_keyword[right])) |
1183 |
|
goto out; |
1184 |
|
break; |
1185 |
|
} |
1186 |
|
} |
1187 |
|
i = cond->post_state[3]; |
1188 |
|
if (!i) |
1189 |
|
goto no_condition; |
1190 |
|
if (!ccs_io_printf(head, " ; set")) |
1191 |
|
goto out; |
1192 |
|
for (j = 0; j < 3; j++) { |
1193 |
|
if (!(i & (1 << j))) |
1194 |
|
continue; |
1195 |
|
if (!ccs_io_printf(head, " task.state[%u]=%u", j, |
1196 |
|
cond->post_state[j])) |
1197 |
|
goto out; |
1198 |
|
} |
1199 |
|
no_condition: |
1200 |
|
if (ccs_io_printf(head, "\n")) |
1201 |
|
return true; |
1202 |
|
out: |
1203 |
|
return false; |
1204 |
|
} |
1205 |
|
|
1206 |
|
/** |
1207 |
|
* ccs_print_path_acl - Print a single path ACL entry. |
1208 |
|
* |
1209 |
|
* @head: Pointer to "struct ccs_io_buffer". |
1210 |
|
* @ptr: Pointer to "struct ccs_path_acl". |
1211 |
|
* @cond: Pointer to "struct ccs_condition". May be NULL. |
1212 |
|
* |
1213 |
|
* Returns true on success, false otherwise. |
1214 |
|
*/ |
1215 |
|
static bool ccs_print_path_acl(struct ccs_io_buffer *head, |
1216 |
|
struct ccs_path_acl *ptr, |
1217 |
|
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 < 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 != TYPE_EXECUTE_ACL) |
if (head->read_execute_only && bit != CCS_TYPE_EXECUTE) |
1226 |
continue; |
continue; |
1227 |
/* Print "read/write" instead of "read" and "write". */ |
/* Print "read/write" instead of "read" and "write". */ |
1228 |
if ((bit == TYPE_READ_ACL || bit == TYPE_WRITE_ACL) |
if ((bit == CCS_TYPE_READ || bit == CCS_TYPE_WRITE) |
1229 |
&& (perm & (1 << TYPE_READ_WRITE_ACL))) |
&& (perm & (1 << CCS_TYPE_READ_WRITE))) |
1230 |
continue; |
continue; |
|
msg = ccs_sp2keyword(bit); |
|
1231 |
pos = head->read_avail; |
pos = head->read_avail; |
1232 |
if (!ccs_io_printf(head, "allow_%s", msg) || |
if (!ccs_io_printf(head, "allow_%s", ccs_path2keyword(bit)) || |
1233 |
!ccs_print_name_union(head, &ptr->name) || |
!ccs_print_name_union(head, &ptr->name) || |
1234 |
!ccs_print_condition(head, cond)) |
!ccs_print_condition(head, cond)) { |
1235 |
goto out; |
head->read_bit = bit; |
1236 |
|
head->read_avail = pos; |
1237 |
|
return false; |
1238 |
|
} |
1239 |
} |
} |
1240 |
head->read_bit = 0; |
head->read_bit = 0; |
1241 |
return true; |
return true; |
|
out: |
|
|
head->read_bit = bit; |
|
|
head->read_avail = pos; |
|
|
return false; |
|
1242 |
} |
} |
1243 |
|
|
1244 |
/** |
/** |
1245 |
* ccs_print_mkdev_acl - Print a mkdev ACL entry. |
* ccs_print_path_number3_acl - Print a path_number3 ACL entry. |
1246 |
* |
* |
1247 |
* @head: Pointer to "struct ccs_io_buffer". |
* @head: Pointer to "struct ccs_io_buffer". |
1248 |
* @ptr: Pointer to "struct ccs_mkdev_acl_record". |
* @ptr: Pointer to "struct ccs_path_number3_acl". |
1249 |
* @cond: Pointer to "struct ccs_condition". May be NULL. |
* @cond: Pointer to "struct ccs_condition". May be NULL. |
1250 |
* |
* |
1251 |
* Returns true on success, false otherwise. |
* Returns true on success, false otherwise. |
1252 |
*/ |
*/ |
1253 |
static bool ccs_print_mkdev_acl(struct ccs_io_buffer *head, |
static bool ccs_print_path_number3_acl(struct ccs_io_buffer *head, |
1254 |
struct ccs_mkdev_acl_record *ptr, |
struct ccs_path_number3_acl *ptr, |
1255 |
const struct ccs_condition *cond) |
const struct ccs_condition *cond) |
1256 |
{ |
{ |
1257 |
int pos; |
int pos; |
1258 |
u8 bit; |
u8 bit; |
1259 |
const u16 perm = ptr->perm; |
const u16 perm = ptr->perm; |
1260 |
for (bit = head->read_bit; bit < MAX_MKDEV_OPERATION; bit++) { |
for (bit = head->read_bit; bit < CCS_MAX_PATH_NUMBER3_OPERATION; |
1261 |
const char *msg; |
bit++) { |
1262 |
if (!(perm & (1 << bit))) |
if (!(perm & (1 << bit))) |
1263 |
continue; |
continue; |
|
msg = ccs_mkdev2keyword(bit); |
|
1264 |
pos = head->read_avail; |
pos = head->read_avail; |
1265 |
if (!ccs_io_printf(head, "allow_%s", msg) || |
if (!ccs_io_printf(head, "allow_%s", |
1266 |
|
ccs_path_number32keyword(bit)) || |
1267 |
!ccs_print_name_union(head, &ptr->name) || |
!ccs_print_name_union(head, &ptr->name) || |
1268 |
|
!ccs_print_number_union(head, &ptr->mode) || |
1269 |
!ccs_print_number_union(head, &ptr->major) || |
!ccs_print_number_union(head, &ptr->major) || |
1270 |
!ccs_print_number_union(head, &ptr->minor) || |
!ccs_print_number_union(head, &ptr->minor) || |
1271 |
!ccs_print_condition(head, cond)) |
!ccs_print_condition(head, cond)) { |
1272 |
goto out; |
head->read_bit = bit; |
1273 |
|
head->read_avail = pos; |
1274 |
|
return false; |
1275 |
|
} |
1276 |
} |
} |
1277 |
head->read_bit = 0; |
head->read_bit = 0; |
1278 |
return true; |
return true; |
|
out: |
|
|
head->read_bit = bit; |
|
|
head->read_avail = pos; |
|
|
return false; |
|
1279 |
} |
} |
1280 |
|
|
1281 |
/** |
/** |
1282 |
* ccs_print_double_path_acl - Print a double path ACL entry. |
* ccs_print_path2_acl - Print a path2 ACL entry. |
1283 |
* |
* |
1284 |
* @head: Pointer to "struct ccs_io_buffer". |
* @head: Pointer to "struct ccs_io_buffer". |
1285 |
* @ptr: Pointer to "struct ccs_double_path_acl_record". |
* @ptr: Pointer to "struct ccs_path2_acl". |
1286 |
* @cond: Pointer to "struct ccs_condition". May be NULL. |
* @cond: Pointer to "struct ccs_condition". May be NULL. |
1287 |
* |
* |
1288 |
* Returns true on success, false otherwise. |
* Returns true on success, false otherwise. |
1289 |
*/ |
*/ |
1290 |
static bool ccs_print_double_path_acl(struct ccs_io_buffer *head, |
static bool ccs_print_path2_acl(struct ccs_io_buffer *head, |
1291 |
struct ccs_double_path_acl_record *ptr, |
struct ccs_path2_acl *ptr, |
1292 |
const struct ccs_condition *cond) |
const struct ccs_condition *cond) |
1293 |
{ |
{ |
1294 |
int pos; |
int pos; |
1295 |
u8 bit; |
u8 bit; |
1296 |
const u8 perm = ptr->perm; |
const u8 perm = ptr->perm; |
1297 |
for (bit = head->read_bit; bit < MAX_DOUBLE_PATH_OPERATION; bit++) { |
for (bit = head->read_bit; bit < CCS_MAX_PATH2_OPERATION; bit++) { |
|
const char *msg; |
|
1298 |
if (!(perm & (1 << bit))) |
if (!(perm & (1 << bit))) |
1299 |
continue; |
continue; |
|
msg = ccs_dp2keyword(bit); |
|
1300 |
pos = head->read_avail; |
pos = head->read_avail; |
1301 |
if (!ccs_io_printf(head, "allow_%s", msg) || |
if (!ccs_io_printf(head, "allow_%s", |
1302 |
|
ccs_path22keyword(bit)) || |
1303 |
!ccs_print_name_union(head, &ptr->name1) || |
!ccs_print_name_union(head, &ptr->name1) || |
1304 |
!ccs_print_name_union(head, &ptr->name2) || |
!ccs_print_name_union(head, &ptr->name2) || |
1305 |
!ccs_print_condition(head, cond)) |
!ccs_print_condition(head, cond)) { |
1306 |
goto out; |
head->read_bit = bit; |
1307 |
|
head->read_avail = pos; |
1308 |
|
return false; |
1309 |
|
} |
1310 |
} |
} |
1311 |
head->read_bit = 0; |
head->read_bit = 0; |
1312 |
return true; |
return true; |
|
out: |
|
|
head->read_bit = bit; |
|
|
head->read_avail = pos; |
|
|
return false; |
|
1313 |
} |
} |
1314 |
|
|
1315 |
/** |
/** |
1316 |
* ccs_print_path_number_acl - Print an ioctl/chmod/chown/chgrp ACL entry. |
* ccs_print_path_number_acl - Print a path_number ACL entry. |
1317 |
* |
* |
1318 |
* @head: Pointer to "struct ccs_io_buffer". |
* @head: Pointer to "struct ccs_io_buffer". |
1319 |
* @ptr: Pointer to "struct ccs_path_number_acl_record". |
* @ptr: Pointer to "struct ccs_path_number_acl". |
1320 |
* @cond: Pointer to "struct ccs_condition". May be NULL. |
* @cond: Pointer to "struct ccs_condition". May be NULL. |
1321 |
* |
* |
1322 |
* Returns true on success, false otherwise. |
* Returns true on success, false otherwise. |
1323 |
*/ |
*/ |
1324 |
static bool ccs_print_path_number_acl(struct ccs_io_buffer *head, |
static bool ccs_print_path_number_acl(struct ccs_io_buffer *head, |
1325 |
struct ccs_path_number_acl_record *ptr, |
struct ccs_path_number_acl *ptr, |
1326 |
const struct ccs_condition *cond) |
const struct ccs_condition *cond) |
1327 |
{ |
{ |
1328 |
int pos; |
int pos; |
1329 |
u8 bit; |
u8 bit; |
1330 |
const u8 perm = ptr->perm; |
const u8 perm = ptr->perm; |
1331 |
for (bit = head->read_bit; bit < MAX_PATH_NUMBER_OPERATION; bit++) { |
for (bit = head->read_bit; bit < CCS_MAX_PATH_NUMBER_OPERATION; |
1332 |
const char *msg; |
bit++) { |
1333 |
if (!(perm & (1 << bit))) |
if (!(perm & (1 << bit))) |
1334 |
continue; |
continue; |
|
msg = ccs_path_number2keyword(bit); |
|
1335 |
pos = head->read_avail; |
pos = head->read_avail; |
1336 |
if (!ccs_io_printf(head, "allow_%s", msg) || |
if (!ccs_io_printf(head, "allow_%s", |
1337 |
|
ccs_path_number2keyword(bit)) || |
1338 |
!ccs_print_name_union(head, &ptr->name) || |
!ccs_print_name_union(head, &ptr->name) || |
1339 |
!ccs_print_number_union(head, &ptr->number) || |
!ccs_print_number_union(head, &ptr->number) || |
1340 |
!ccs_print_condition(head, cond)) |
!ccs_print_condition(head, cond)) { |
1341 |
goto out; |
head->read_bit = bit; |
1342 |
|
head->read_avail = pos; |
1343 |
|
return false; |
1344 |
|
} |
1345 |
} |
} |
1346 |
head->read_bit = 0; |
head->read_bit = 0; |
1347 |
return true; |
return true; |
|
out: |
|
|
head->read_bit = bit; |
|
|
head->read_avail = pos; |
|
|
return false; |
|
|
} |
|
|
|
|
|
/** |
|
|
* ccs_print_argv0_acl - Print an argv[0] ACL entry. |
|
|
* |
|
|
* @head: Pointer to "struct ccs_io_buffer". |
|
|
* @ptr: Pointer to "struct ccs_argv0_acl_record". |
|
|
* @cond: Pointer to "struct ccs_condition". May be NULL. |
|
|
* |
|
|
* Returns true on success, false otherwise. |
|
|
*/ |
|
|
static bool ccs_print_argv0_acl(struct ccs_io_buffer *head, |
|
|
struct ccs_argv0_acl_record *ptr, |
|
|
const struct ccs_condition *cond) |
|
|
{ |
|
|
int pos = head->read_avail; |
|
|
if (!ccs_io_printf(head, KEYWORD_ALLOW_ARGV0 "%s %s", |
|
|
ptr->filename->name, ptr->argv0->name)) |
|
|
goto out; |
|
|
if (!ccs_print_condition(head, cond)) |
|
|
goto out; |
|
|
return true; |
|
|
out: |
|
|
head->read_avail = pos; |
|
|
return false; |
|
1348 |
} |
} |
1349 |
|
|
1350 |
/** |
/** |
1351 |
* ccs_print_env_acl - Print an evironment variable name's ACL entry. |
* ccs_print_env_acl - Print an evironment variable name's ACL entry. |
1352 |
* |
* |
1353 |
* @head: Pointer to "struct ccs_io_buffer". |
* @head: Pointer to "struct ccs_io_buffer". |
1354 |
* @ptr: Pointer to "struct ccs_env_acl_record". |
* @ptr: Pointer to "struct ccs_env_acl". |
1355 |
* @cond: Pointer to "struct ccs_condition". May be NULL. |
* @cond: Pointer to "struct ccs_condition". May be NULL. |
1356 |
* |
* |
1357 |
* Returns true on success, false otherwise. |
* Returns true on success, false otherwise. |
1358 |
*/ |
*/ |
1359 |
static bool ccs_print_env_acl(struct ccs_io_buffer *head, |
static bool ccs_print_env_acl(struct ccs_io_buffer *head, |
1360 |
struct ccs_env_acl_record *ptr, |
struct ccs_env_acl *ptr, |
1361 |
const struct ccs_condition *cond) |
const struct ccs_condition *cond) |
1362 |
{ |
{ |
1363 |
int pos = head->read_avail; |
const int pos = head->read_avail; |
1364 |
if (!ccs_io_printf(head, KEYWORD_ALLOW_ENV "%s", ptr->env->name)) |
if (!ccs_io_printf(head, CCS_KEYWORD_ALLOW_ENV "%s", ptr->env->name) || |
1365 |
goto out; |
!ccs_print_condition(head, cond)) { |
1366 |
if (!ccs_print_condition(head, cond)) |
head->read_avail = pos; |
1367 |
goto out; |
return false; |
1368 |
|
} |
1369 |
return true; |
return true; |
|
out: |
|
|
head->read_avail = pos; |
|
|
return false; |
|
1370 |
} |
} |
1371 |
|
|
1372 |
/** |
/** |
1373 |
* ccs_print_capability_acl - Print a capability ACL entry. |
* ccs_print_capability_acl - Print a capability ACL entry. |
1374 |
* |
* |
1375 |
* @head: Pointer to "struct ccs_io_buffer". |
* @head: Pointer to "struct ccs_io_buffer". |
1376 |
* @ptr: Pointer to "struct ccs_capability_acl_record". |
* @ptr: Pointer to "struct ccs_capability_acl". |
1377 |
* @cond: Pointer to "struct ccs_condition". May be NULL. |
* @cond: Pointer to "struct ccs_condition". May be NULL. |
1378 |
* |
* |
1379 |
* Returns true on success, false otherwise. |
* Returns true on success, false otherwise. |
1380 |
*/ |
*/ |
1381 |
static bool ccs_print_capability_acl(struct ccs_io_buffer *head, |
static bool ccs_print_capability_acl(struct ccs_io_buffer *head, |
1382 |
struct ccs_capability_acl_record *ptr, |
struct ccs_capability_acl *ptr, |
1383 |
const struct ccs_condition *cond) |
const struct ccs_condition *cond) |
1384 |
{ |
{ |
1385 |
int pos = head->read_avail; |
const int pos = head->read_avail; |
1386 |
if (!ccs_io_printf(head, KEYWORD_ALLOW_CAPABILITY "%s", |
if (!ccs_io_printf(head, CCS_KEYWORD_ALLOW_CAPABILITY "%s", |
1387 |
ccs_cap2keyword(ptr->operation))) |
ccs_cap2keyword(ptr->operation)) || |
1388 |
goto out; |
!ccs_print_condition(head, cond)) { |
1389 |
if (!ccs_print_condition(head, cond)) |
head->read_avail = pos; |
1390 |
goto out; |
return false; |
1391 |
|
} |
1392 |
return true; |
return true; |
|
out: |
|
|
head->read_avail = pos; |
|
|
return false; |
|
1393 |
} |
} |
1394 |
|
|
1395 |
/** |
/** |
1396 |
* ccs_print_ipv4_entry - Print IPv4 address of a network ACL entry. |
* ccs_print_ipv4_entry - Print IPv4 address of a network ACL entry. |
1397 |
* |
* |
1398 |
* @head: Pointer to "struct ccs_io_buffer". |
* @head: Pointer to "struct ccs_io_buffer". |
1399 |
* @ptr: Pointer to "struct ccs_ip_network_acl_record". |
* @ptr: Pointer to "struct ccs_ip_network_acl". |
1400 |
* |
* |
1401 |
* Returns true on success, false otherwise. |
* Returns true on success, false otherwise. |
1402 |
*/ |
*/ |
1403 |
static bool ccs_print_ipv4_entry(struct ccs_io_buffer *head, |
static bool ccs_print_ipv4_entry(struct ccs_io_buffer *head, |
1404 |
struct ccs_ip_network_acl_record *ptr) |
struct ccs_ip_network_acl *ptr) |
1405 |
{ |
{ |
1406 |
const u32 min_address = ptr->address.ipv4.min; |
const u32 min_address = ptr->address.ipv4.min; |
1407 |
const u32 max_address = ptr->address.ipv4.max; |
const u32 max_address = ptr->address.ipv4.max; |
1417 |
* ccs_print_ipv6_entry - Print IPv6 address of a network ACL entry. |
* ccs_print_ipv6_entry - Print IPv6 address of a network ACL entry. |
1418 |
* |
* |
1419 |
* @head: Pointer to "struct ccs_io_buffer". |
* @head: Pointer to "struct ccs_io_buffer". |
1420 |
* @ptr: Pointer to "struct ccs_ip_network_acl_record". |
* @ptr: Pointer to "struct ccs_ip_network_acl". |
1421 |
* |
* |
1422 |
* Returns true on success, false otherwise. |
* Returns true on success, false otherwise. |
1423 |
*/ |
*/ |
1424 |
static bool ccs_print_ipv6_entry(struct ccs_io_buffer *head, |
static bool ccs_print_ipv6_entry(struct ccs_io_buffer *head, |
1425 |
struct ccs_ip_network_acl_record *ptr) |
struct ccs_ip_network_acl *ptr) |
1426 |
{ |
{ |
1427 |
char buf[64]; |
char buf[64]; |
1428 |
const struct in6_addr *min_address = ptr->address.ipv6.min; |
const struct in6_addr *min_address = ptr->address.ipv6.min; |
1442 |
* ccs_print_network_acl - Print a network ACL entry. |
* ccs_print_network_acl - Print a network ACL entry. |
1443 |
* |
* |
1444 |
* @head: Pointer to "struct ccs_io_buffer". |
* @head: Pointer to "struct ccs_io_buffer". |
1445 |
* @ptr: Pointer to "struct ccs_ip_network_acl_record". |
* @ptr: Pointer to "struct ccs_ip_network_acl". |
1446 |
* @cond: Pointer to "struct ccs_condition". May be NULL. |
* @cond: Pointer to "struct ccs_condition". May be NULL. |
1447 |
* |
* |
1448 |
* Returns true on success, false otherwise. |
* Returns true on success, false otherwise. |
1449 |
*/ |
*/ |
1450 |
static bool ccs_print_network_acl(struct ccs_io_buffer *head, |
static bool ccs_print_network_acl(struct ccs_io_buffer *head, |
1451 |
struct ccs_ip_network_acl_record *ptr, |
struct ccs_ip_network_acl *ptr, |
1452 |
const struct ccs_condition *cond) |
const struct ccs_condition *cond) |
1453 |
{ |
{ |
1454 |
int pos = head->read_avail; |
int pos; |
1455 |
if (!ccs_io_printf(head, KEYWORD_ALLOW_NETWORK "%s ", |
u8 bit; |
1456 |
ccs_net2keyword(ptr->operation_type))) |
const u16 perm = ptr->perm; |
1457 |
goto out; |
for (bit = head->read_bit; bit < CCS_MAX_NETWORK_OPERATION; bit++) { |
1458 |
switch (ptr->record_type) { |
if (!(perm & (1 << bit))) |
1459 |
case IP_RECORD_TYPE_ADDRESS_GROUP: |
continue; |
1460 |
if (!ccs_io_printf(head, "@%s", |
pos = head->read_avail; |
1461 |
ptr->address.group->group_name->name)) |
if (!ccs_io_printf(head, CCS_KEYWORD_ALLOW_NETWORK "%s ", |
1462 |
goto out; |
ccs_net2keyword(bit))) |
|
break; |
|
|
case IP_RECORD_TYPE_IPv4: |
|
|
if (!ccs_print_ipv4_entry(head, ptr)) |
|
1463 |
goto out; |
goto out; |
1464 |
break; |
switch (ptr->address_type) { |
1465 |
case IP_RECORD_TYPE_IPv6: |
case CCS_IP_ADDRESS_TYPE_ADDRESS_GROUP: |
1466 |
if (!ccs_print_ipv6_entry(head, ptr)) |
if (!ccs_io_printf(head, "@%s", ptr->address.group-> |
1467 |
|
group_name->name)) |
1468 |
|
goto out; |
1469 |
|
break; |
1470 |
|
case CCS_IP_ADDRESS_TYPE_IPv4: |
1471 |
|
if (!ccs_print_ipv4_entry(head, ptr)) |
1472 |
|
goto out; |
1473 |
|
break; |
1474 |
|
case CCS_IP_ADDRESS_TYPE_IPv6: |
1475 |
|
if (!ccs_print_ipv6_entry(head, ptr)) |
1476 |
|
goto out; |
1477 |
|
break; |
1478 |
|
} |
1479 |
|
if (!ccs_print_number_union(head, &ptr->port) || |
1480 |
|
!ccs_print_condition(head, cond)) |
1481 |
goto out; |
goto out; |
|
break; |
|
1482 |
} |
} |
1483 |
if (!ccs_print_number_union(head, &ptr->port) || |
head->read_bit = 0; |
|
!ccs_print_condition(head, cond)) |
|
|
goto out; |
|
1484 |
return true; |
return true; |
1485 |
out: |
out: |
1486 |
|
head->read_bit = bit; |
1487 |
head->read_avail = pos; |
head->read_avail = pos; |
1488 |
return false; |
return false; |
1489 |
} |
} |
1492 |
* ccs_print_signal_acl - Print a signal ACL entry. |
* ccs_print_signal_acl - Print a signal ACL entry. |
1493 |
* |
* |
1494 |
* @head: Pointer to "struct ccs_io_buffer". |
* @head: Pointer to "struct ccs_io_buffer". |
1495 |
* @ptr: Pointer to "struct signale_acl_record". |
* @ptr: Pointer to "struct signale_acl". |
1496 |
* @cond: Pointer to "struct ccs_condition". May be NULL. |
* @cond: Pointer to "struct ccs_condition". May be NULL. |
1497 |
* |
* |
1498 |
* Returns true on success, false otherwise. |
* Returns true on success, false otherwise. |
1499 |
*/ |
*/ |
1500 |
static bool ccs_print_signal_acl(struct ccs_io_buffer *head, |
static bool ccs_print_signal_acl(struct ccs_io_buffer *head, |
1501 |
struct ccs_signal_acl_record *ptr, |
struct ccs_signal_acl *ptr, |
1502 |
const struct ccs_condition *cond) |
const struct ccs_condition *cond) |
1503 |
{ |
{ |
1504 |
int pos = head->read_avail; |
const int pos = head->read_avail; |
1505 |
if (!ccs_io_printf(head, KEYWORD_ALLOW_SIGNAL "%u %s", |
if (!ccs_io_printf(head, CCS_KEYWORD_ALLOW_SIGNAL "%u %s", |
1506 |
ptr->sig, ptr->domainname->name)) |
ptr->sig, ptr->domainname->name) || |
1507 |
goto out; |
!ccs_print_condition(head, cond)) { |
1508 |
if (!ccs_print_condition(head, cond)) |
head->read_avail = pos; |
1509 |
goto out; |
return false; |
1510 |
|
} |
1511 |
return true; |
return true; |
|
out: |
|
|
head->read_avail = pos; |
|
|
return false; |
|
1512 |
} |
} |
1513 |
|
|
1514 |
/** |
/** |
1532 |
* ccs_print_mount_acl - Print a mount ACL entry. |
* ccs_print_mount_acl - Print a mount ACL entry. |
1533 |
* |
* |
1534 |
* @head: Pointer to "struct ccs_io_buffer". |
* @head: Pointer to "struct ccs_io_buffer". |
1535 |
* @ptr: Pointer to "struct ccs_mount_acl_record". |
* @ptr: Pointer to "struct ccs_mount_acl". |
1536 |
* @cond: Pointer to "struct ccs_condition". May be NULL. |
* @cond: Pointer to "struct ccs_condition". May be NULL. |
1537 |
* |
* |
1538 |
* Returns true on success, false otherwise. |
* Returns true on success, false otherwise. |
1539 |
*/ |
*/ |
1540 |
static bool ccs_print_mount_acl(struct ccs_io_buffer *head, |
static bool ccs_print_mount_acl(struct ccs_io_buffer *head, |
1541 |
struct ccs_mount_acl_record *ptr, |
struct ccs_mount_acl *ptr, |
1542 |
const struct ccs_condition *cond) |
const struct ccs_condition *cond) |
1543 |
{ |
{ |
1544 |
int pos = head->read_avail; |
const int pos = head->read_avail; |
1545 |
if (!ccs_io_printf(head, KEYWORD_ALLOW_MOUNT "%s %s %s 0x%lX\n", |
if (!ccs_io_printf(head, CCS_KEYWORD_ALLOW_MOUNT) || |
1546 |
ptr->dev_name->name, ptr->dir_name->name, |
!ccs_print_name_union(head, &ptr->dev_name) || |
1547 |
ptr->fs_type->name, ptr->flags)) |
!ccs_print_name_union(head, &ptr->dir_name) || |
1548 |
goto out; |
!ccs_print_name_union(head, &ptr->fs_type) || |
1549 |
if (!ccs_print_condition(head, cond)) |
!ccs_print_number_union(head, &ptr->flags) || |
1550 |
goto out; |
!ccs_print_condition(head, cond)) { |
1551 |
|
head->read_avail = pos; |
1552 |
|
return false; |
1553 |
|
} |
1554 |
return true; |
return true; |
|
out: |
|
|
head->read_avail = pos; |
|
|
return false; |
|
1555 |
} |
} |
1556 |
|
|
1557 |
/** |
/** |
1558 |
* ccs_print_umount_acl - Print a mount ACL entry. |
* ccs_print_umount_acl - Print a mount ACL entry. |
1559 |
* |
* |
1560 |
* @head: Pointer to "struct ccs_io_buffer". |
* @head: Pointer to "struct ccs_io_buffer". |
1561 |
* @ptr: Pointer to "struct ccs_umount_acl_record". |
* @ptr: Pointer to "struct ccs_umount_acl". |
1562 |
* @cond: Pointer to "struct ccs_condition". May be NULL. |
* @cond: Pointer to "struct ccs_condition". May be NULL. |
1563 |
* |
* |
1564 |
* Returns true on success, false otherwise. |
* Returns true on success, false otherwise. |
1565 |
*/ |
*/ |
1566 |
static bool ccs_print_umount_acl(struct ccs_io_buffer *head, |
static bool ccs_print_umount_acl(struct ccs_io_buffer *head, |
1567 |
struct ccs_umount_acl_record *ptr, |
struct ccs_umount_acl *ptr, |
1568 |
const struct ccs_condition *cond) |
const struct ccs_condition *cond) |
1569 |
{ |
{ |
1570 |
int pos = head->read_avail; |
const int pos = head->read_avail; |
1571 |
if (!ccs_io_printf(head, KEYWORD_ALLOW_UNMOUNT "%s\n", |
if (!ccs_io_printf(head, CCS_KEYWORD_ALLOW_UNMOUNT) || |
1572 |
ptr->dir->name)) |
!ccs_print_name_union(head, &ptr->dir) || |
1573 |
goto out; |
!ccs_print_condition(head, cond)) { |
1574 |
if (!ccs_print_condition(head, cond)) |
head->read_avail = pos; |
1575 |
goto out; |
return false; |
1576 |
|
} |
1577 |
return true; |
return true; |
|
out: |
|
|
head->read_avail = pos; |
|
|
return false; |
|
1578 |
} |
} |
1579 |
|
|
1580 |
/** |
/** |
1581 |
* ccs_print_chroot_acl - Print a chroot ACL entry. |
* ccs_print_chroot_acl - Print a chroot ACL entry. |
1582 |
* |
* |
1583 |
* @head: Pointer to "struct ccs_io_buffer". |
* @head: Pointer to "struct ccs_io_buffer". |
1584 |
* @ptr: Pointer to "struct ccs_chroot_acl_record". |
* @ptr: Pointer to "struct ccs_chroot_acl". |
1585 |
* @cond: Pointer to "struct ccs_condition". May be NULL. |
* @cond: Pointer to "struct ccs_condition". May be NULL. |
1586 |
* |
* |
1587 |
* Returns true on success, false otherwise. |
* Returns true on success, false otherwise. |
1588 |
*/ |
*/ |
1589 |
static bool ccs_print_chroot_acl(struct ccs_io_buffer *head, |
static bool ccs_print_chroot_acl(struct ccs_io_buffer *head, |
1590 |
struct ccs_chroot_acl_record *ptr, |
struct ccs_chroot_acl *ptr, |
1591 |
const struct ccs_condition *cond) |
const struct ccs_condition *cond) |
1592 |
{ |
{ |
1593 |
int pos = head->read_avail; |
const int pos = head->read_avail; |
1594 |
if (!ccs_io_printf(head, KEYWORD_ALLOW_CHROOT "%s\n", |
if (!ccs_io_printf(head, CCS_KEYWORD_ALLOW_CHROOT) || |
1595 |
ptr->dir->name)) |
!ccs_print_name_union(head, &ptr->dir) || |
1596 |
goto out; |
!ccs_print_condition(head, cond)) { |
1597 |
if (!ccs_print_condition(head, cond)) |
head->read_avail = pos; |
1598 |
goto out; |
return false; |
1599 |
|
} |
1600 |
return true; |
return true; |
|
out: |
|
|
head->read_avail = pos; |
|
|
return false; |
|
1601 |
} |
} |
1602 |
|
|
1603 |
/** |
/** |
1604 |
* ccs_print_pivot_root_acl - Print a pivot_root ACL entry. |
* ccs_print_pivot_root_acl - Print a pivot_root ACL entry. |
1605 |
* |
* |
1606 |
* @head: Pointer to "struct ccs_io_buffer". |
* @head: Pointer to "struct ccs_io_buffer". |
1607 |
* @ptr: Pointer to "struct ccs_pivot_root_acl_record". |
* @ptr: Pointer to "struct ccs_pivot_root_acl". |
1608 |
* @cond: Pointer to "struct ccs_condition". May be NULL. |
* @cond: Pointer to "struct ccs_condition". May be NULL. |
1609 |
* |
* |
1610 |
* Returns true on success, false otherwise. |
* Returns true on success, false otherwise. |
1611 |
*/ |
*/ |
1612 |
static bool ccs_print_pivot_root_acl(struct ccs_io_buffer *head, |
static bool ccs_print_pivot_root_acl(struct ccs_io_buffer *head, |
1613 |
struct ccs_pivot_root_acl_record *ptr, |
struct ccs_pivot_root_acl *ptr, |
1614 |
const struct ccs_condition *cond) |
const struct ccs_condition *cond) |
1615 |
{ |
{ |
1616 |
int pos = head->read_avail; |
const int pos = head->read_avail; |
1617 |
if (!ccs_io_printf(head, KEYWORD_ALLOW_PIVOT_ROOT "%s %s\n", |
if (!ccs_io_printf(head, CCS_KEYWORD_ALLOW_PIVOT_ROOT) || |
1618 |
ptr->new_root->name, ptr->old_root->name)) |
!ccs_print_name_union(head, &ptr->new_root) || |
1619 |
goto out; |
!ccs_print_name_union(head, &ptr->old_root) || |
1620 |
if (!ccs_print_condition(head, cond)) |
!ccs_print_condition(head, cond)) { |
1621 |
goto out; |
head->read_avail = pos; |
1622 |
|
return false; |
1623 |
|
} |
1624 |
return true; |
return true; |
|
out: |
|
|
head->read_avail = pos; |
|
|
return false; |
|
1625 |
} |
} |
1626 |
|
|
1627 |
/** |
/** |
1636 |
struct ccs_acl_info *ptr) |
struct ccs_acl_info *ptr) |
1637 |
{ |
{ |
1638 |
const struct ccs_condition *cond = ptr->cond; |
const struct ccs_condition *cond = ptr->cond; |
1639 |
const u8 acl_type = ccs_acl_type2(ptr); |
const u8 acl_type = ptr->type; |
1640 |
if (acl_type & ACL_DELETED) |
if (ptr->is_deleted) |
1641 |
return true; |
return true; |
1642 |
if (acl_type == TYPE_SINGLE_PATH_ACL) { |
if (acl_type == CCS_TYPE_PATH_ACL) { |
1643 |
struct ccs_single_path_acl_record *acl |
struct ccs_path_acl *acl |
1644 |
= container_of(ptr, struct ccs_single_path_acl_record, |
= container_of(ptr, struct ccs_path_acl, head); |
1645 |
head); |
return ccs_print_path_acl(head, acl, cond); |
|
return ccs_print_single_path_acl(head, acl, cond); |
|
1646 |
} |
} |
1647 |
if (acl_type == TYPE_EXECUTE_HANDLER) { |
if (acl_type == CCS_TYPE_EXECUTE_HANDLER) { |
1648 |
struct ccs_execute_handler_record *acl |
struct ccs_execute_handler_record *acl |
1649 |
= container_of(ptr, struct ccs_execute_handler_record, |
= container_of(ptr, struct ccs_execute_handler_record, |
1650 |
head); |
head); |
1651 |
const char *keyword = KEYWORD_EXECUTE_HANDLER; |
const char *keyword = CCS_KEYWORD_EXECUTE_HANDLER; |
1652 |
return ccs_print_execute_handler_record(head, keyword, acl); |
return ccs_print_execute_handler_record(head, keyword, acl); |
1653 |
} |
} |
1654 |
if (acl_type == TYPE_DENIED_EXECUTE_HANDLER) { |
if (acl_type == CCS_TYPE_DENIED_EXECUTE_HANDLER) { |
1655 |
struct ccs_execute_handler_record *acl |
struct ccs_execute_handler_record *acl |
1656 |
= container_of(ptr, struct ccs_execute_handler_record, |
= container_of(ptr, struct ccs_execute_handler_record, |
1657 |
head); |
head); |
1658 |
const char *keyword = KEYWORD_DENIED_EXECUTE_HANDLER; |
const char *keyword = CCS_KEYWORD_DENIED_EXECUTE_HANDLER; |
1659 |
return ccs_print_execute_handler_record(head, keyword, acl); |
return ccs_print_execute_handler_record(head, keyword, acl); |
1660 |
} |
} |
1661 |
if (head->read_execute_only) |
if (head->read_execute_only) |
1662 |
return true; |
return true; |
1663 |
if (acl_type == TYPE_MKDEV_ACL) { |
if (acl_type == CCS_TYPE_PATH_NUMBER3_ACL) { |
1664 |
struct ccs_mkdev_acl_record *acl |
struct ccs_path_number3_acl *acl |
1665 |
= container_of(ptr, struct ccs_mkdev_acl_record, head); |
= container_of(ptr, struct ccs_path_number3_acl, head); |
1666 |
return ccs_print_mkdev_acl(head, acl, cond); |
return ccs_print_path_number3_acl(head, acl, cond); |
1667 |
} |
} |
1668 |
if (acl_type == TYPE_DOUBLE_PATH_ACL) { |
if (acl_type == CCS_TYPE_PATH2_ACL) { |
1669 |
struct ccs_double_path_acl_record *acl |
struct ccs_path2_acl *acl |
1670 |
= container_of(ptr, struct ccs_double_path_acl_record, |
= container_of(ptr, struct ccs_path2_acl, |
1671 |
head); |
head); |
1672 |
return ccs_print_double_path_acl(head, acl, cond); |
return ccs_print_path2_acl(head, acl, cond); |
1673 |
} |
} |
1674 |
if (acl_type == TYPE_PATH_NUMBER_ACL) { |
if (acl_type == CCS_TYPE_PATH_NUMBER_ACL) { |
1675 |
struct ccs_path_number_acl_record *acl |
struct ccs_path_number_acl *acl |
1676 |
= container_of(ptr, struct ccs_path_number_acl_record, |
= container_of(ptr, struct ccs_path_number_acl, |
1677 |
head); |
head); |
1678 |
return ccs_print_path_number_acl(head, acl, cond); |
return ccs_print_path_number_acl(head, acl, cond); |
1679 |
} |
} |
1680 |
if (acl_type == TYPE_ARGV0_ACL) { |
if (acl_type == CCS_TYPE_ENV_ACL) { |
1681 |
struct ccs_argv0_acl_record *acl |
struct ccs_env_acl *acl |
1682 |
= container_of(ptr, struct ccs_argv0_acl_record, head); |
= container_of(ptr, struct ccs_env_acl, head); |
|
return ccs_print_argv0_acl(head, acl, cond); |
|
|
} |
|
|
if (acl_type == TYPE_ENV_ACL) { |
|
|
struct ccs_env_acl_record *acl |
|
|
= container_of(ptr, struct ccs_env_acl_record, head); |
|
1683 |
return ccs_print_env_acl(head, acl, cond); |
return ccs_print_env_acl(head, acl, cond); |
1684 |
} |
} |
1685 |
if (acl_type == TYPE_CAPABILITY_ACL) { |
if (acl_type == CCS_TYPE_CAPABILITY_ACL) { |
1686 |
struct ccs_capability_acl_record *acl |
struct ccs_capability_acl *acl |
1687 |
= container_of(ptr, struct ccs_capability_acl_record, |
= container_of(ptr, struct ccs_capability_acl, |
1688 |
head); |
head); |
1689 |
return ccs_print_capability_acl(head, acl, cond); |
return ccs_print_capability_acl(head, acl, cond); |
1690 |
} |
} |
1691 |
if (acl_type == TYPE_IP_NETWORK_ACL) { |
if (acl_type == CCS_TYPE_IP_NETWORK_ACL) { |
1692 |
struct ccs_ip_network_acl_record *acl |
struct ccs_ip_network_acl *acl |
1693 |
= container_of(ptr, struct ccs_ip_network_acl_record, |
= container_of(ptr, struct ccs_ip_network_acl, |
1694 |
head); |
head); |
1695 |
return ccs_print_network_acl(head, acl, cond); |
return ccs_print_network_acl(head, acl, cond); |
1696 |
} |
} |
1697 |
if (acl_type == TYPE_SIGNAL_ACL) { |
if (acl_type == CCS_TYPE_SIGNAL_ACL) { |
1698 |
struct ccs_signal_acl_record *acl |
struct ccs_signal_acl *acl |
1699 |
= container_of(ptr, struct ccs_signal_acl_record, head); |
= container_of(ptr, struct ccs_signal_acl, head); |
1700 |
return ccs_print_signal_acl(head, acl, cond); |
return ccs_print_signal_acl(head, acl, cond); |
1701 |
} |
} |
1702 |
if (acl_type == TYPE_MOUNT_ACL) { |
if (acl_type == CCS_TYPE_MOUNT_ACL) { |
1703 |
struct ccs_mount_acl_record *acl |
struct ccs_mount_acl *acl |
1704 |
= container_of(ptr, struct ccs_mount_acl_record, head); |
= container_of(ptr, struct ccs_mount_acl, head); |
1705 |
return ccs_print_mount_acl(head, acl, cond); |
return ccs_print_mount_acl(head, acl, cond); |
1706 |
} |
} |
1707 |
if (acl_type == TYPE_UMOUNT_ACL) { |
if (acl_type == CCS_TYPE_UMOUNT_ACL) { |
1708 |
struct ccs_umount_acl_record *acl |
struct ccs_umount_acl *acl |
1709 |
= container_of(ptr, struct ccs_umount_acl_record, head); |
= container_of(ptr, struct ccs_umount_acl, head); |
1710 |
return ccs_print_umount_acl(head, acl, cond); |
return ccs_print_umount_acl(head, acl, cond); |
1711 |
} |
} |
1712 |
if (acl_type == TYPE_CHROOT_ACL) { |
if (acl_type == CCS_TYPE_CHROOT_ACL) { |
1713 |
struct ccs_chroot_acl_record *acl |
struct ccs_chroot_acl *acl |
1714 |
= container_of(ptr, struct ccs_chroot_acl_record, head); |
= container_of(ptr, struct ccs_chroot_acl, head); |
1715 |
return ccs_print_chroot_acl(head, acl, cond); |
return ccs_print_chroot_acl(head, acl, cond); |
1716 |
} |
} |
1717 |
if (acl_type == TYPE_PIVOT_ROOT_ACL) { |
if (acl_type == CCS_TYPE_PIVOT_ROOT_ACL) { |
1718 |
struct ccs_pivot_root_acl_record *acl |
struct ccs_pivot_root_acl *acl |
1719 |
= container_of(ptr, struct ccs_pivot_root_acl_record, |
= container_of(ptr, struct ccs_pivot_root_acl, |
1720 |
head); |
head); |
1721 |
return ccs_print_pivot_root_acl(head, acl, cond); |
return ccs_print_pivot_root_acl(head, acl, cond); |
1722 |
} |
} |
|
/* Workaround for gcc 3.2.2's inline bug. */ |
|
|
if (acl_type & ACL_DELETED) |
|
|
return true; |
|
1723 |
BUG(); /* This must not happen. */ |
BUG(); /* This must not happen. */ |
1724 |
return false; |
return false; |
1725 |
} |
} |
1729 |
* |
* |
1730 |
* @head: Pointer to "struct ccs_io_buffer". |
* @head: Pointer to "struct ccs_io_buffer". |
1731 |
* |
* |
|
* Returns 0. |
|
|
* |
|
1732 |
* Caller holds ccs_read_lock(). |
* Caller holds ccs_read_lock(). |
1733 |
*/ |
*/ |
1734 |
static int ccs_read_domain_policy(struct ccs_io_buffer *head) |
static void ccs_read_domain_policy(struct ccs_io_buffer *head) |
1735 |
{ |
{ |
1736 |
struct list_head *dpos; |
struct list_head *dpos; |
1737 |
struct list_head *apos; |
struct list_head *apos; |
|
ccs_check_read_lock(); |
|
1738 |
if (head->read_eof) |
if (head->read_eof) |
1739 |
return 0; |
return; |
1740 |
if (head->read_step == 0) |
if (head->read_step == 0) |
1741 |
head->read_step = 1; |
head->read_step = 1; |
1742 |
list_for_each_cookie(dpos, head->read_var1, &ccs_domain_list) { |
list_for_each_cookie(dpos, head->read_var1, &ccs_domain_list) { |
1757 |
transition_failed = "transition_failed\n"; |
transition_failed = "transition_failed\n"; |
1758 |
if (domain->ignore_global_allow_read) |
if (domain->ignore_global_allow_read) |
1759 |
ignore_global_allow_read |
ignore_global_allow_read |
1760 |
= KEYWORD_IGNORE_GLOBAL_ALLOW_READ "\n"; |
= CCS_KEYWORD_IGNORE_GLOBAL_ALLOW_READ "\n"; |
1761 |
if (domain->ignore_global_allow_env) |
if (domain->ignore_global_allow_env) |
1762 |
ignore_global_allow_env |
ignore_global_allow_env |
1763 |
= KEYWORD_IGNORE_GLOBAL_ALLOW_ENV "\n"; |
= CCS_KEYWORD_IGNORE_GLOBAL_ALLOW_ENV "\n"; |
1764 |
if (!ccs_io_printf(head, "%s\n" KEYWORD_USE_PROFILE "%u\n" |
if (!ccs_io_printf(head, "%s\n" CCS_KEYWORD_USE_PROFILE "%u\n" |
1765 |
"%s%s%s%s\n", domain->domainname->name, |
"%s%s%s%s\n", domain->domainname->name, |
1766 |
domain->profile, quota_exceeded, |
domain->profile, quota_exceeded, |
1767 |
transition_failed, |
transition_failed, |
1768 |
ignore_global_allow_read, |
ignore_global_allow_read, |
1769 |
ignore_global_allow_env)) |
ignore_global_allow_env)) |
1770 |
return 0; |
return; |
1771 |
head->read_step = 2; |
head->read_step = 2; |
1772 |
acl_loop: |
acl_loop: |
1773 |
if (head->read_step == 3) |
if (head->read_step == 3) |
1778 |
struct ccs_acl_info *ptr |
struct ccs_acl_info *ptr |
1779 |
= list_entry(apos, struct ccs_acl_info, list); |
= list_entry(apos, struct ccs_acl_info, list); |
1780 |
if (!ccs_print_entry(head, ptr)) |
if (!ccs_print_entry(head, ptr)) |
1781 |
return 0; |
return; |
1782 |
} |
} |
1783 |
head->read_step = 3; |
head->read_step = 3; |
1784 |
tail_mark: |
tail_mark: |
1785 |
if (!ccs_io_printf(head, "\n")) |
if (!ccs_io_printf(head, "\n")) |
1786 |
return 0; |
return; |
1787 |
head->read_step = 1; |
head->read_step = 1; |
1788 |
if (head->read_single_domain) |
if (head->read_single_domain) |
1789 |
break; |
break; |
1790 |
} |
} |
1791 |
head->read_eof = true; |
head->read_eof = true; |
|
return 0; |
|
1792 |
} |
} |
1793 |
|
|
1794 |
/** |
/** |
1801 |
* This is equivalent to doing |
* This is equivalent to doing |
1802 |
* |
* |
1803 |
* ( echo "select " $domainname; echo "use_profile " $profile ) | |
* ( echo "select " $domainname; echo "use_profile " $profile ) | |
1804 |
* /usr/lib/ccs/loadpolicy -d |
* /usr/sbin/ccs-loadpolicy -d |
1805 |
* |
* |
1806 |
* Caller holds ccs_read_lock(). |
* Caller holds ccs_read_lock(). |
1807 |
*/ |
*/ |
1811 |
char *cp = strchr(data, ' '); |
char *cp = strchr(data, ' '); |
1812 |
struct ccs_domain_info *domain; |
struct ccs_domain_info *domain; |
1813 |
unsigned int profile; |
unsigned int profile; |
|
ccs_check_read_lock(); |
|
1814 |
if (!cp) |
if (!cp) |
1815 |
return -EINVAL; |
return -EINVAL; |
1816 |
*cp = '\0'; |
*cp = '\0'; |
1817 |
profile = simple_strtoul(data, NULL, 10); |
profile = simple_strtoul(data, NULL, 10); |
1818 |
if (profile >= MAX_PROFILES) |
if (profile >= CCS_MAX_PROFILES) |
1819 |
return -EINVAL; |
return -EINVAL; |
1820 |
domain = ccs_find_domain(cp + 1); |
domain = ccs_find_domain(cp + 1); |
1821 |
if (domain && (ccs_profile_ptr[profile] || !ccs_policy_loaded)) |
if (domain && (!ccs_policy_loaded || ccs_profile_ptr[(u8) profile])) |
1822 |
domain->profile = (u8) profile; |
domain->profile = (u8) profile; |
1823 |
return 0; |
return 0; |
1824 |
} |
} |
1828 |
* |
* |
1829 |
* @head: Pointer to "struct ccs_io_buffer". |
* @head: Pointer to "struct ccs_io_buffer". |
1830 |
* |
* |
|
* Returns list of profile number and domainname pairs. |
|
|
* |
|
1831 |
* This is equivalent to doing |
* This is equivalent to doing |
1832 |
* |
* |
1833 |
* grep -A 1 '^<kernel>' /proc/ccs/domain_policy | |
* grep -A 1 '^<kernel>' /proc/ccs/domain_policy | |
1837 |
* |
* |
1838 |
* Caller holds ccs_read_lock(). |
* Caller holds ccs_read_lock(). |
1839 |
*/ |
*/ |
1840 |
static int ccs_read_domain_profile(struct ccs_io_buffer *head) |
static void ccs_read_domain_profile(struct ccs_io_buffer *head) |
1841 |
{ |
{ |
1842 |
struct list_head *pos; |
struct list_head *pos; |
|
ccs_check_read_lock(); |
|
1843 |
if (head->read_eof) |
if (head->read_eof) |
1844 |
return 0; |
return; |
1845 |
list_for_each_cookie(pos, head->read_var1, &ccs_domain_list) { |
list_for_each_cookie(pos, head->read_var1, &ccs_domain_list) { |
1846 |
struct ccs_domain_info *domain; |
struct ccs_domain_info *domain; |
1847 |
domain = list_entry(pos, struct ccs_domain_info, list); |
domain = list_entry(pos, struct ccs_domain_info, list); |
1849 |
continue; |
continue; |
1850 |
if (!ccs_io_printf(head, "%u %s\n", domain->profile, |
if (!ccs_io_printf(head, "%u %s\n", domain->profile, |
1851 |
domain->domainname->name)) |
domain->domainname->name)) |
1852 |
return 0; |
return; |
1853 |
} |
} |
1854 |
head->read_eof = true; |
head->read_eof = true; |
|
return 0; |
|
1855 |
} |
} |
1856 |
|
|
1857 |
/** |
/** |
1878 |
* |
* |
1879 |
* Caller holds ccs_read_lock(). |
* Caller holds ccs_read_lock(). |
1880 |
*/ |
*/ |
1881 |
static int ccs_read_pid(struct ccs_io_buffer *head) |
static void ccs_read_pid(struct ccs_io_buffer *head) |
1882 |
{ |
{ |
1883 |
char *buf = head->write_buf; |
char *buf = head->write_buf; |
1884 |
bool task_info = false; |
bool task_info = false; |
1885 |
|
bool global_pid = false; |
1886 |
unsigned int pid; |
unsigned int pid; |
1887 |
struct task_struct *p; |
struct task_struct *p; |
1888 |
struct ccs_domain_info *domain = NULL; |
struct ccs_domain_info *domain = NULL; |
1889 |
u32 ccs_flags = 0; |
u32 ccs_flags = 0; |
|
ccs_check_read_lock(); |
|
1890 |
/* Accessing write_buf is safe because head->io_sem is held. */ |
/* Accessing write_buf is safe because head->io_sem is held. */ |
1891 |
if (!buf) |
if (!buf) |
1892 |
goto done; /* Do nothing if open(O_RDONLY). */ |
return; /* Do nothing if open(O_RDONLY). */ |
1893 |
if (head->read_avail || head->read_eof) |
if (head->read_avail || head->read_eof) |
1894 |
goto done; |
return; |
1895 |
head->read_eof = true; |
head->read_eof = true; |
1896 |
if (ccs_str_starts(&buf, "info ")) |
if (ccs_str_starts(&buf, "info ")) |
1897 |
task_info = true; |
task_info = true; |
1898 |
|
if (ccs_str_starts(&buf, "global-pid ")) |
1899 |
|
global_pid = true; |
1900 |
pid = (unsigned int) simple_strtoul(buf, NULL, 10); |
pid = (unsigned int) simple_strtoul(buf, NULL, 10); |
|
/***** CRITICAL SECTION START *****/ |
|
1901 |
read_lock(&tasklist_lock); |
read_lock(&tasklist_lock); |
1902 |
|
#if LINUX_VERSION_CODE >= KERNEL_VERSION(2, 6, 24) |
1903 |
|
if (global_pid) |
1904 |
|
p = find_task_by_pid_ns(pid, &init_pid_ns); |
1905 |
|
else |
1906 |
|
p = find_task_by_vpid(pid); |
1907 |
|
#else |
1908 |
p = find_task_by_pid(pid); |
p = find_task_by_pid(pid); |
1909 |
|
#endif |
1910 |
if (p) { |
if (p) { |
1911 |
domain = ccs_task_domain(p); |
domain = ccs_task_domain(p); |
1912 |
ccs_flags = p->ccs_flags; |
ccs_flags = p->ccs_flags; |
1913 |
} |
} |
1914 |
read_unlock(&tasklist_lock); |
read_unlock(&tasklist_lock); |
|
/***** CRITICAL SECTION END *****/ |
|
1915 |
if (!domain) |
if (!domain) |
1916 |
goto done; |
return; |
1917 |
if (!task_info) |
if (!task_info) |
1918 |
ccs_io_printf(head, "%u %u %s", pid, domain->profile, |
ccs_io_printf(head, "%u %u %s", pid, domain->profile, |
1919 |
domain->domainname->name); |
domain->domainname->name); |
1920 |
else |
else |
1921 |
ccs_io_printf(head, "%u manager=%s execute_handler=%s " |
ccs_io_printf(head, "%u manager=%s execute_handler=%s " |
1922 |
"state[0]=%u state[1]=%u state[2]=%u", pid, |
"state[0]=%u state[1]=%u state[2]=%u", pid, |
1923 |
ccs_flags & CCS_TASK_IS_POLICY_MANAGER ? |
ccs_yesno(ccs_flags & |
1924 |
"yes" : "no", |
CCS_TASK_IS_POLICY_MANAGER), |
1925 |
ccs_flags & CCS_TASK_IS_EXECUTE_HANDLER ? |
ccs_yesno(ccs_flags & |
1926 |
"yes" : "no", |
CCS_TASK_IS_EXECUTE_HANDLER), |
1927 |
(u8) (ccs_flags >> 24), |
(u8) (ccs_flags >> 24), |
1928 |
(u8) (ccs_flags >> 16), |
(u8) (ccs_flags >> 16), |
1929 |
(u8) (ccs_flags >> 8)); |
(u8) (ccs_flags >> 8)); |
|
done: |
|
|
return 0; |
|
1930 |
} |
} |
1931 |
|
|
1932 |
/** |
/** |
1939 |
static int ccs_write_exception_policy(struct ccs_io_buffer *head) |
static int ccs_write_exception_policy(struct ccs_io_buffer *head) |
1940 |
{ |
{ |
1941 |
char *data = head->write_buf; |
char *data = head->write_buf; |
1942 |
bool is_delete = ccs_str_starts(&data, KEYWORD_DELETE); |
bool is_delete = ccs_str_starts(&data, CCS_KEYWORD_DELETE); |
1943 |
if (ccs_str_starts(&data, KEYWORD_KEEP_DOMAIN)) |
if (ccs_str_starts(&data, CCS_KEYWORD_KEEP_DOMAIN)) |
1944 |
return ccs_write_domain_keeper_policy(data, false, is_delete); |
return ccs_write_domain_keeper_policy(data, false, is_delete); |
1945 |
if (ccs_str_starts(&data, KEYWORD_NO_KEEP_DOMAIN)) |
if (ccs_str_starts(&data, CCS_KEYWORD_NO_KEEP_DOMAIN)) |
1946 |
return ccs_write_domain_keeper_policy(data, true, is_delete); |
return ccs_write_domain_keeper_policy(data, true, is_delete); |
1947 |
if (ccs_str_starts(&data, KEYWORD_INITIALIZE_DOMAIN)) |
if (ccs_str_starts(&data, CCS_KEYWORD_INITIALIZE_DOMAIN)) |
1948 |
return ccs_write_domain_initializer_policy(data, false, |
return ccs_write_domain_initializer_policy(data, false, |
1949 |
is_delete); |
is_delete); |
1950 |
if (ccs_str_starts(&data, KEYWORD_NO_INITIALIZE_DOMAIN)) |
if (ccs_str_starts(&data, CCS_KEYWORD_NO_INITIALIZE_DOMAIN)) |
1951 |
return ccs_write_domain_initializer_policy(data, true, |
return ccs_write_domain_initializer_policy(data, true, |
1952 |
is_delete); |
is_delete); |
1953 |
if (ccs_str_starts(&data, KEYWORD_AGGREGATOR)) |
if (ccs_str_starts(&data, CCS_KEYWORD_AGGREGATOR)) |
1954 |
return ccs_write_aggregator_policy(data, is_delete); |
return ccs_write_aggregator_policy(data, is_delete); |
1955 |
if (ccs_str_starts(&data, KEYWORD_ALLOW_READ)) |
if (ccs_str_starts(&data, CCS_KEYWORD_ALLOW_READ)) |
1956 |
return ccs_write_globally_readable_policy(data, is_delete); |
return ccs_write_globally_readable_policy(data, is_delete); |
1957 |
if (ccs_str_starts(&data, KEYWORD_ALLOW_ENV)) |
if (ccs_str_starts(&data, CCS_KEYWORD_ALLOW_ENV)) |
1958 |
return ccs_write_globally_usable_env_policy(data, is_delete); |
return ccs_write_globally_usable_env_policy(data, is_delete); |
1959 |
if (ccs_str_starts(&data, KEYWORD_FILE_PATTERN)) |
if (ccs_str_starts(&data, CCS_KEYWORD_FILE_PATTERN)) |
1960 |
return ccs_write_pattern_policy(data, is_delete); |
return ccs_write_pattern_policy(data, is_delete); |
1961 |
if (ccs_str_starts(&data, KEYWORD_PATH_GROUP)) |
if (ccs_str_starts(&data, CCS_KEYWORD_PATH_GROUP)) |
1962 |
return ccs_write_path_group_policy(data, is_delete); |
return ccs_write_path_group_policy(data, is_delete); |
1963 |
if (ccs_str_starts(&data, KEYWORD_NUMBER_GROUP)) |
if (ccs_str_starts(&data, CCS_KEYWORD_NUMBER_GROUP)) |
1964 |
return ccs_write_number_group_policy(data, is_delete); |
return ccs_write_number_group_policy(data, is_delete); |
1965 |
if (ccs_str_starts(&data, KEYWORD_DENY_REWRITE)) |
if (ccs_str_starts(&data, CCS_KEYWORD_DENY_REWRITE)) |
1966 |
return ccs_write_no_rewrite_policy(data, is_delete); |
return ccs_write_no_rewrite_policy(data, is_delete); |
1967 |
if (ccs_str_starts(&data, KEYWORD_ADDRESS_GROUP)) |
if (ccs_str_starts(&data, CCS_KEYWORD_ADDRESS_GROUP)) |
1968 |
return ccs_write_address_group_policy(data, is_delete); |
return ccs_write_address_group_policy(data, is_delete); |
1969 |
if (ccs_str_starts(&data, KEYWORD_DENY_AUTOBIND)) |
if (ccs_str_starts(&data, CCS_KEYWORD_DENY_AUTOBIND)) |
1970 |
return ccs_write_reserved_port_policy(data, is_delete); |
return ccs_write_reserved_port_policy(data, is_delete); |
1971 |
return -EINVAL; |
return -EINVAL; |
1972 |
} |
} |
1976 |
* |
* |
1977 |
* @head: Pointer to "struct ccs_io_buffer". |
* @head: Pointer to "struct ccs_io_buffer". |
1978 |
* |
* |
|
* Returns 0 on success, -EINVAL otherwise. |
|
|
* |
|
1979 |
* Caller holds ccs_read_lock(). |
* Caller holds ccs_read_lock(). |
1980 |
*/ |
*/ |
1981 |
static int ccs_read_exception_policy(struct ccs_io_buffer *head) |
static void ccs_read_exception_policy(struct ccs_io_buffer *head) |
1982 |
{ |
{ |
1983 |
ccs_check_read_lock(); |
if (head->read_eof) |
1984 |
if (!head->read_eof) { |
return; |
1985 |
switch (head->read_step) { |
switch (head->read_step) { |
1986 |
case 0: |
case 0: |
1987 |
head->read_var2 = NULL; |
head->read_var2 = NULL; |
1988 |
head->read_step = 1; |
head->read_step = 1; |
1989 |
case 1: |
case 1: |
1990 |
if (!ccs_read_domain_keeper_policy(head)) |
if (!ccs_read_domain_keeper_policy(head)) |
1991 |
break; |
break; |
1992 |
head->read_var2 = NULL; |
head->read_var2 = NULL; |
1993 |
head->read_step = 2; |
head->read_step = 2; |
1994 |
case 2: |
case 2: |
1995 |
if (!ccs_read_globally_readable_policy(head)) |
if (!ccs_read_globally_readable_policy(head)) |
1996 |
break; |
break; |
1997 |
head->read_var2 = NULL; |
head->read_var2 = NULL; |
1998 |
head->read_step = 3; |
head->read_step = 3; |
1999 |
case 3: |
case 3: |
2000 |
if (!ccs_read_globally_usable_env_policy(head)) |
if (!ccs_read_globally_usable_env_policy(head)) |
2001 |
break; |
break; |
2002 |
head->read_var2 = NULL; |
head->read_var2 = NULL; |
2003 |
head->read_step = 4; |
head->read_step = 4; |
2004 |
case 4: |
case 4: |
2005 |
if (!ccs_read_domain_initializer_policy(head)) |
if (!ccs_read_domain_initializer_policy(head)) |
2006 |
break; |
break; |
2007 |
head->read_var2 = NULL; |
head->read_var2 = NULL; |
2008 |
head->read_step = 6; |
head->read_step = 6; |
2009 |
case 6: |
case 6: |
2010 |
if (!ccs_read_aggregator_policy(head)) |
if (!ccs_read_aggregator_policy(head)) |
2011 |
break; |
break; |
2012 |
head->read_var2 = NULL; |
head->read_var2 = NULL; |
2013 |
head->read_step = 7; |
head->read_step = 7; |
2014 |
case 7: |
case 7: |
2015 |
if (!ccs_read_file_pattern(head)) |
if (!ccs_read_file_pattern(head)) |
2016 |
break; |
break; |
2017 |
head->read_var2 = NULL; |
head->read_var2 = NULL; |
2018 |
head->read_step = 8; |
head->read_step = 8; |
2019 |
case 8: |
case 8: |
2020 |
if (!ccs_read_no_rewrite_policy(head)) |
if (!ccs_read_no_rewrite_policy(head)) |
2021 |
break; |
break; |
2022 |
head->read_var2 = NULL; |
head->read_var2 = NULL; |
2023 |
head->read_step = 9; |
head->read_step = 9; |
2024 |
case 9: |
case 9: |
2025 |
if (!ccs_read_path_group_policy(head)) |
if (!ccs_read_path_group_policy(head)) |
2026 |
break; |
break; |
2027 |
head->read_var1 = NULL; |
head->read_var1 = NULL; |
2028 |
head->read_var2 = NULL; |
head->read_var2 = NULL; |
2029 |
head->read_step = 10; |
head->read_step = 10; |
2030 |
case 10: |
case 10: |
2031 |
if (!ccs_read_number_group_policy(head)) |
if (!ccs_read_number_group_policy(head)) |
2032 |
break; |
break; |
2033 |
head->read_var1 = NULL; |
head->read_var1 = NULL; |
2034 |
head->read_var2 = NULL; |
head->read_var2 = NULL; |
2035 |
head->read_step = 11; |
head->read_step = 11; |
2036 |
case 11: |
case 11: |
2037 |
if (!ccs_read_address_group_policy(head)) |
if (!ccs_read_address_group_policy(head)) |
2038 |
break; |
break; |
2039 |
head->read_var2 = NULL; |
head->read_var2 = NULL; |
2040 |
head->read_step = 12; |
head->read_step = 12; |
2041 |
case 12: |
case 12: |
2042 |
if (!ccs_read_reserved_port_policy(head)) |
if (!ccs_read_reserved_port_policy(head)) |
2043 |
|
break; |
2044 |
|
head->read_eof = true; |
2045 |
|
} |
2046 |
|
} |
2047 |
|
|
2048 |
|
/** |
2049 |
|
* ccs_get_argv0 - Get argv[0]. |
2050 |
|
* |
2051 |
|
* @ee: Pointer to "struct ccs_execve_entry". |
2052 |
|
* |
2053 |
|
* Returns true on success, false otherwise. |
2054 |
|
*/ |
2055 |
|
static bool ccs_get_argv0(struct ccs_execve_entry *ee) |
2056 |
|
{ |
2057 |
|
struct linux_binprm *bprm = ee->bprm; |
2058 |
|
char *arg_ptr = ee->tmp; |
2059 |
|
int arg_len = 0; |
2060 |
|
unsigned long pos = bprm->p; |
2061 |
|
int offset = pos % PAGE_SIZE; |
2062 |
|
bool done = false; |
2063 |
|
if (!bprm->argc) |
2064 |
|
goto out; |
2065 |
|
while (1) { |
2066 |
|
if (!ccs_dump_page(bprm, pos, &ee->dump)) |
2067 |
|
goto out; |
2068 |
|
pos += PAGE_SIZE - offset; |
2069 |
|
/* Read. */ |
2070 |
|
while (offset < PAGE_SIZE) { |
2071 |
|
const char *kaddr = ee->dump.data; |
2072 |
|
const unsigned char c = kaddr[offset++]; |
2073 |
|
if (c && arg_len < CCS_EXEC_TMPSIZE - 10) { |
2074 |
|
if (c == '\\') { |
2075 |
|
arg_ptr[arg_len++] = '\\'; |
2076 |
|
arg_ptr[arg_len++] = '\\'; |
2077 |
|
} else if (c > ' ' && c < 127) { |
2078 |
|
arg_ptr[arg_len++] = c; |
2079 |
|
} else { |
2080 |
|
arg_ptr[arg_len++] = '\\'; |
2081 |
|
arg_ptr[arg_len++] = (c >> 6) + '0'; |
2082 |
|
arg_ptr[arg_len++] |
2083 |
|
= ((c >> 3) & 7) + '0'; |
2084 |
|
arg_ptr[arg_len++] = (c & 7) + '0'; |
2085 |
|
} |
2086 |
|
} else { |
2087 |
|
arg_ptr[arg_len] = '\0'; |
2088 |
|
done = true; |
2089 |
break; |
break; |
2090 |
head->read_eof = true; |
} |
2091 |
|
} |
2092 |
|
offset = 0; |
2093 |
|
if (done) |
2094 |
break; |
break; |
2095 |
default: |
} |
2096 |
return -EINVAL; |
return true; |
2097 |
|
out: |
2098 |
|
return false; |
2099 |
|
} |
2100 |
|
|
2101 |
|
/** |
2102 |
|
* ccs_get_execute_condition - Get condition part for execute requests. |
2103 |
|
* |
2104 |
|
* @ee: Pointer to "struct ccs_execve_entry". |
2105 |
|
* |
2106 |
|
* Returns pointer to "struct ccs_condition" on success, NULL otherwise. |
2107 |
|
*/ |
2108 |
|
static struct ccs_condition *ccs_get_execute_condition(struct ccs_execve_entry |
2109 |
|
*ee) |
2110 |
|
{ |
2111 |
|
struct ccs_condition *cond; |
2112 |
|
char *buf; |
2113 |
|
int len = 256; |
2114 |
|
char *realpath = NULL; |
2115 |
|
char *argv0 = NULL; |
2116 |
|
const struct ccs_profile *profile = ccs_profile(ee->r.domain->profile); |
2117 |
|
if (profile->learning->learning_exec_realpath) { |
2118 |
|
struct file *file = ee->bprm->file; |
2119 |
|
#if LINUX_VERSION_CODE < KERNEL_VERSION(2, 6, 20) |
2120 |
|
struct path path = { file->f_vfsmnt, file->f_dentry }; |
2121 |
|
realpath = ccs_realpath_from_path(&path); |
2122 |
|
#else |
2123 |
|
realpath = ccs_realpath_from_path(&file->f_path); |
2124 |
|
#endif |
2125 |
|
if (realpath) |
2126 |
|
len += strlen(realpath) + 17; |
2127 |
|
} |
2128 |
|
if (profile->learning->learning_exec_argv0) { |
2129 |
|
if (ccs_get_argv0(ee)) { |
2130 |
|
argv0 = ee->tmp; |
2131 |
|
len += strlen(argv0) + 16; |
2132 |
} |
} |
2133 |
} |
} |
2134 |
return 0; |
buf = kmalloc(len, GFP_KERNEL); |
2135 |
|
if (!buf) { |
2136 |
|
kfree(realpath); |
2137 |
|
return NULL; |
2138 |
|
} |
2139 |
|
snprintf(buf, len - 1, "if"); |
2140 |
|
if (current->ccs_flags & CCS_TASK_IS_EXECUTE_HANDLER) { |
2141 |
|
const int pos = strlen(buf); |
2142 |
|
snprintf(buf + pos, len - pos - 1, |
2143 |
|
" task.type=execute_handler"); |
2144 |
|
} |
2145 |
|
if (realpath) { |
2146 |
|
const int pos = strlen(buf); |
2147 |
|
snprintf(buf + pos, len - pos - 1, " exec.realpath=\"%s\"", |
2148 |
|
realpath); |
2149 |
|
kfree(realpath); |
2150 |
|
} |
2151 |
|
if (argv0) { |
2152 |
|
const int pos = strlen(buf); |
2153 |
|
snprintf(buf + pos, len - pos - 1, " exec.argv[0]=\"%s\"", |
2154 |
|
argv0); |
2155 |
|
} |
2156 |
|
cond = ccs_get_condition(buf); |
2157 |
|
kfree(buf); |
2158 |
|
return cond; |
2159 |
|
} |
2160 |
|
|
2161 |
|
/** |
2162 |
|
* ccs_get_symlink_condition - Get condition part for symlink requests. |
2163 |
|
* |
2164 |
|
* @r: Pointer to "struct ccs_request_info". |
2165 |
|
* |
2166 |
|
* Returns pointer to "struct ccs_condition" on success, NULL otherwise. |
2167 |
|
*/ |
2168 |
|
static struct ccs_condition *ccs_get_symlink_condition(struct ccs_request_info |
2169 |
|
*r) |
2170 |
|
{ |
2171 |
|
struct ccs_condition *cond; |
2172 |
|
char *buf; |
2173 |
|
int len = 256; |
2174 |
|
const char *symlink = NULL; |
2175 |
|
const struct ccs_profile *profile = ccs_profile(r->profile); |
2176 |
|
if (profile->learning->learning_symlink_target) { |
2177 |
|
symlink = r->obj->symlink_target->name; |
2178 |
|
len += strlen(symlink) + 18; |
2179 |
|
} |
2180 |
|
buf = kmalloc(len, GFP_KERNEL); |
2181 |
|
if (!buf) |
2182 |
|
return NULL; |
2183 |
|
snprintf(buf, len - 1, "if"); |
2184 |
|
if (current->ccs_flags & CCS_TASK_IS_EXECUTE_HANDLER) { |
2185 |
|
const int pos = strlen(buf); |
2186 |
|
snprintf(buf + pos, len - pos - 1, |
2187 |
|
" task.type=execute_handler"); |
2188 |
|
} |
2189 |
|
if (symlink) { |
2190 |
|
const int pos = strlen(buf); |
2191 |
|
snprintf(buf + pos, len - pos - 1, " symlink.target=\"%s\"", |
2192 |
|
symlink); |
2193 |
|
} |
2194 |
|
cond = ccs_get_condition(buf); |
2195 |
|
kfree(buf); |
2196 |
|
return cond; |
2197 |
} |
} |
2198 |
|
|
2199 |
/* Wait queue for ccs_query_list. */ |
/* Wait queue for ccs_query_list. */ |
2219 |
static atomic_t ccs_query_observers = ATOMIC_INIT(0); |
static atomic_t ccs_query_observers = ATOMIC_INIT(0); |
2220 |
|
|
2221 |
/** |
/** |
2222 |
* ccs_check_supervisor - Ask for the supervisor's decision. |
* ccs_supervisor - Ask for the supervisor's decision. |
2223 |
* |
* |
2224 |
* @r: Pointer to "struct ccs_request_info". |
* @r: Pointer to "struct ccs_request_info". |
2225 |
* @fmt: The printf()'s format string, followed by parameters. |
* @fmt: The printf()'s format string, followed by parameters. |
2227 |
* Returns 0 if the supervisor decided to permit the access request which |
* Returns 0 if the supervisor decided to permit the access request which |
2228 |
* violated the policy in enforcing mode, 1 if the supervisor decided to |
* violated the policy in enforcing mode, 1 if the supervisor decided to |
2229 |
* retry the access request which violated the policy in enforcing mode, |
* retry the access request which violated the policy in enforcing mode, |
2230 |
* -EPERM otherwise. |
* 0 if it is not in enforcing mode, -EPERM otherwise. |
2231 |
*/ |
*/ |
2232 |
int ccs_check_supervisor(struct ccs_request_info *r, const char *fmt, ...) |
int ccs_supervisor(struct ccs_request_info *r, const char *fmt, ...) |
2233 |
{ |
{ |
2234 |
va_list args; |
va_list args; |
2235 |
int error = -EPERM; |
int error = -EPERM; |
2241 |
char *header; |
char *header; |
2242 |
if (!r->domain) |
if (!r->domain) |
2243 |
r->domain = ccs_current_domain(); |
r->domain = ccs_current_domain(); |
2244 |
|
switch (r->mode) { |
2245 |
|
char *buffer; |
2246 |
|
struct ccs_condition *cond; |
2247 |
|
case CCS_CONFIG_LEARNING: |
2248 |
|
if (!ccs_domain_quota_ok(r)) |
2249 |
|
return 0; |
2250 |
|
va_start(args, fmt); |
2251 |
|
len = vsnprintf((char *) &pos, sizeof(pos) - 1, fmt, args) + 4; |
2252 |
|
va_end(args); |
2253 |
|
buffer = kmalloc(len, GFP_KERNEL); |
2254 |
|
if (!buffer) |
2255 |
|
return 0; |
2256 |
|
va_start(args, fmt); |
2257 |
|
vsnprintf(buffer, len - 1, fmt, args); |
2258 |
|
va_end(args); |
2259 |
|
ccs_normalize_line(buffer); |
2260 |
|
if (r->ee && !strncmp(buffer, "allow_execute ", 14)) |
2261 |
|
cond = ccs_get_execute_condition(r->ee); |
2262 |
|
else if (r->obj && r->obj->symlink_target) |
2263 |
|
cond = ccs_get_symlink_condition(r); |
2264 |
|
else if ((current->ccs_flags & CCS_TASK_IS_EXECUTE_HANDLER)) { |
2265 |
|
char str[] = "if task.type=execute_handler"; |
2266 |
|
cond = ccs_get_condition(str); |
2267 |
|
} else |
2268 |
|
cond = NULL; |
2269 |
|
ccs_write_domain_policy2(buffer, r->domain, cond, false); |
2270 |
|
ccs_put_condition(cond); |
2271 |
|
kfree(buffer); |
2272 |
|
/* fall through */ |
2273 |
|
case CCS_CONFIG_PERMISSIVE: |
2274 |
|
return 0; |
2275 |
|
} |
2276 |
if (!atomic_read(&ccs_query_observers)) { |
if (!atomic_read(&ccs_query_observers)) { |
2277 |
int i; |
int i; |
2278 |
if (current->ccs_flags & CCS_DONT_SLEEP_ON_ENFORCE_ERROR) |
if (current->ccs_flags & CCS_DONT_SLEEP_ON_ENFORCE_ERROR) |
2279 |
return -EPERM; |
return -EPERM; |
2280 |
for (i = 0; i < ccs_check_flags(r->domain, CCS_SLEEP_PERIOD); |
for (i = 0; i < ccs_profile(r->domain->profile)->enforcing-> |
2281 |
i++) { |
enforcing_penalty; i++) { |
2282 |
set_current_state(TASK_INTERRUPTIBLE); |
set_current_state(TASK_INTERRUPTIBLE); |
2283 |
schedule_timeout(HZ / 10); |
schedule_timeout(HZ / 10); |
2284 |
} |
} |
2293 |
ccs_query_entry = kzalloc(sizeof(*ccs_query_entry), GFP_KERNEL); |
ccs_query_entry = kzalloc(sizeof(*ccs_query_entry), GFP_KERNEL); |
2294 |
if (!ccs_query_entry) |
if (!ccs_query_entry) |
2295 |
goto out; |
goto out; |
2296 |
|
len = ccs_round2(len); |
2297 |
ccs_query_entry->query = kzalloc(len, GFP_KERNEL); |
ccs_query_entry->query = kzalloc(len, GFP_KERNEL); |
2298 |
if (!ccs_query_entry->query) |
if (!ccs_query_entry->query) |
2299 |
goto out; |
goto out; |
2300 |
INIT_LIST_HEAD(&ccs_query_entry->list); |
INIT_LIST_HEAD(&ccs_query_entry->list); |
|
/***** CRITICAL SECTION START *****/ |
|
2301 |
spin_lock(&ccs_query_list_lock); |
spin_lock(&ccs_query_list_lock); |
2302 |
if (ccs_quota_for_query && ccs_query_memory_size + len + |
if (ccs_quota_for_query && ccs_query_memory_size + len + |
2303 |
sizeof(*ccs_query_entry) >= ccs_quota_for_query) { |
sizeof(*ccs_query_entry) >= ccs_quota_for_query) { |
2307 |
ccs_query_entry->serial = ccs_serial++; |
ccs_query_entry->serial = ccs_serial++; |
2308 |
} |
} |
2309 |
spin_unlock(&ccs_query_list_lock); |
spin_unlock(&ccs_query_list_lock); |
|
/***** CRITICAL SECTION END *****/ |
|
2310 |
if (quota_exceeded) |
if (quota_exceeded) |
2311 |
goto out; |
goto out; |
2312 |
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", |
2317 |
vsnprintf(ccs_query_entry->query + pos, len - 1 - pos, fmt, args); |
vsnprintf(ccs_query_entry->query + pos, len - 1 - pos, fmt, args); |
2318 |
ccs_query_entry->query_len = strlen(ccs_query_entry->query) + 1; |
ccs_query_entry->query_len = strlen(ccs_query_entry->query) + 1; |
2319 |
va_end(args); |
va_end(args); |
|
/***** CRITICAL SECTION START *****/ |
|
2320 |
spin_lock(&ccs_query_list_lock); |
spin_lock(&ccs_query_list_lock); |
2321 |
list_add_tail(&ccs_query_entry->list, &ccs_query_list); |
list_add_tail(&ccs_query_entry->list, &ccs_query_list); |
2322 |
spin_unlock(&ccs_query_list_lock); |
spin_unlock(&ccs_query_list_lock); |
|
/***** CRITICAL SECTION END *****/ |
|
2323 |
/* Give 10 seconds for supervisor's opinion. */ |
/* Give 10 seconds for supervisor's opinion. */ |
2324 |
for (ccs_query_entry->timer = 0; |
for (ccs_query_entry->timer = 0; |
2325 |
atomic_read(&ccs_query_observers) && ccs_query_entry->timer < 100; |
atomic_read(&ccs_query_observers) && ccs_query_entry->timer < 100; |
2330 |
if (ccs_query_entry->answer) |
if (ccs_query_entry->answer) |
2331 |
break; |
break; |
2332 |
} |
} |
|
/***** CRITICAL SECTION START *****/ |
|
2333 |
spin_lock(&ccs_query_list_lock); |
spin_lock(&ccs_query_list_lock); |
2334 |
list_del(&ccs_query_entry->list); |
list_del(&ccs_query_entry->list); |
2335 |
ccs_query_memory_size -= len + sizeof(*ccs_query_entry); |
ccs_query_memory_size -= len + sizeof(*ccs_query_entry); |
2336 |
spin_unlock(&ccs_query_list_lock); |
spin_unlock(&ccs_query_list_lock); |
|
/***** CRITICAL SECTION END *****/ |
|
2337 |
switch (ccs_query_entry->answer) { |
switch (ccs_query_entry->answer) { |
2338 |
case 3: /* Asked to retry by administrator. */ |
case 3: /* Asked to retry by administrator. */ |
2339 |
error = 1; |
error = 1; |
2374 |
bool found = false; |
bool found = false; |
2375 |
u8 i; |
u8 i; |
2376 |
for (i = 0; i < 2; i++) { |
for (i = 0; i < 2; i++) { |
|
/***** CRITICAL SECTION START *****/ |
|
2377 |
spin_lock(&ccs_query_list_lock); |
spin_lock(&ccs_query_list_lock); |
2378 |
list_for_each(tmp, &ccs_query_list) { |
list_for_each(tmp, &ccs_query_list) { |
2379 |
struct ccs_query_entry *ptr |
struct ccs_query_entry *ptr |
2384 |
break; |
break; |
2385 |
} |
} |
2386 |
spin_unlock(&ccs_query_list_lock); |
spin_unlock(&ccs_query_list_lock); |
|
/***** CRITICAL SECTION END *****/ |
|
2387 |
if (found) |
if (found) |
2388 |
return POLLIN | POLLRDNORM; |
return POLLIN | POLLRDNORM; |
2389 |
if (i) |
if (i) |
2397 |
* ccs_read_query - Read access requests which violated policy in enforcing mode. |
* ccs_read_query - Read access requests which violated policy in enforcing mode. |
2398 |
* |
* |
2399 |
* @head: Pointer to "struct ccs_io_buffer". |
* @head: Pointer to "struct ccs_io_buffer". |
|
* |
|
|
* Returns 0. |
|
2400 |
*/ |
*/ |
2401 |
static int ccs_read_query(struct ccs_io_buffer *head) |
static void ccs_read_query(struct ccs_io_buffer *head) |
2402 |
{ |
{ |
2403 |
struct list_head *tmp; |
struct list_head *tmp; |
2404 |
int pos = 0; |
int pos = 0; |
2405 |
int len = 0; |
int len = 0; |
2406 |
char *buf; |
char *buf; |
2407 |
if (head->read_avail) |
if (head->read_avail) |
2408 |
return 0; |
return; |
2409 |
if (head->read_buf) { |
if (head->read_buf) { |
2410 |
kfree(head->read_buf); |
kfree(head->read_buf); |
2411 |
head->read_buf = NULL; |
head->read_buf = NULL; |
2412 |
head->readbuf_size = 0; |
head->readbuf_size = 0; |
2413 |
} |
} |
|
/***** CRITICAL SECTION START *****/ |
|
2414 |
spin_lock(&ccs_query_list_lock); |
spin_lock(&ccs_query_list_lock); |
2415 |
list_for_each(tmp, &ccs_query_list) { |
list_for_each(tmp, &ccs_query_list) { |
2416 |
struct ccs_query_entry *ptr |
struct ccs_query_entry *ptr |
2423 |
break; |
break; |
2424 |
} |
} |
2425 |
spin_unlock(&ccs_query_list_lock); |
spin_unlock(&ccs_query_list_lock); |
|
/***** CRITICAL SECTION END *****/ |
|
2426 |
if (!len) { |
if (!len) { |
2427 |
head->read_step = 0; |
head->read_step = 0; |
2428 |
return 0; |
return; |
2429 |
} |
} |
2430 |
buf = kzalloc(len, GFP_KERNEL); |
buf = kzalloc(len, GFP_KERNEL); |
2431 |
if (!buf) |
if (!buf) |
2432 |
return 0; |
return; |
2433 |
pos = 0; |
pos = 0; |
|
/***** CRITICAL SECTION START *****/ |
|
2434 |
spin_lock(&ccs_query_list_lock); |
spin_lock(&ccs_query_list_lock); |
2435 |
list_for_each(tmp, &ccs_query_list) { |
list_for_each(tmp, &ccs_query_list) { |
2436 |
struct ccs_query_entry *ptr |
struct ccs_query_entry *ptr |
2448 |
break; |
break; |
2449 |
} |
} |
2450 |
spin_unlock(&ccs_query_list_lock); |
spin_unlock(&ccs_query_list_lock); |
|
/***** CRITICAL SECTION END *****/ |
|
2451 |
if (buf[0]) { |
if (buf[0]) { |
2452 |
head->read_avail = len; |
head->read_avail = len; |
2453 |
head->readbuf_size = head->read_avail; |
head->readbuf_size = head->read_avail; |
2456 |
} else { |
} else { |
2457 |
kfree(buf); |
kfree(buf); |
2458 |
} |
} |
|
return 0; |
|
2459 |
} |
} |
2460 |
|
|
2461 |
/** |
/** |
2471 |
struct list_head *tmp; |
struct list_head *tmp; |
2472 |
unsigned int serial; |
unsigned int serial; |
2473 |
unsigned int answer; |
unsigned int answer; |
|
/***** CRITICAL SECTION START *****/ |
|
2474 |
spin_lock(&ccs_query_list_lock); |
spin_lock(&ccs_query_list_lock); |
2475 |
list_for_each(tmp, &ccs_query_list) { |
list_for_each(tmp, &ccs_query_list) { |
2476 |
struct ccs_query_entry *ptr |
struct ccs_query_entry *ptr |
2478 |
ptr->timer = 0; |
ptr->timer = 0; |
2479 |
} |
} |
2480 |
spin_unlock(&ccs_query_list_lock); |
spin_unlock(&ccs_query_list_lock); |
|
/***** CRITICAL SECTION END *****/ |
|
2481 |
if (sscanf(data, "A%u=%u", &serial, &answer) != 2) |
if (sscanf(data, "A%u=%u", &serial, &answer) != 2) |
2482 |
return -EINVAL; |
return -EINVAL; |
|
/***** CRITICAL SECTION START *****/ |
|
2483 |
spin_lock(&ccs_query_list_lock); |
spin_lock(&ccs_query_list_lock); |
2484 |
list_for_each(tmp, &ccs_query_list) { |
list_for_each(tmp, &ccs_query_list) { |
2485 |
struct ccs_query_entry *ptr |
struct ccs_query_entry *ptr |
2491 |
break; |
break; |
2492 |
} |
} |
2493 |
spin_unlock(&ccs_query_list_lock); |
spin_unlock(&ccs_query_list_lock); |
|
/***** CRITICAL SECTION END *****/ |
|
2494 |
return 0; |
return 0; |
2495 |
} |
} |
2496 |
|
|
2498 |
* ccs_read_version: Get version. |
* ccs_read_version: Get version. |
2499 |
* |
* |
2500 |
* @head: Pointer to "struct ccs_io_buffer". |
* @head: Pointer to "struct ccs_io_buffer". |
|
* |
|
|
* Returns version information. |
|
2501 |
*/ |
*/ |
2502 |
static int ccs_read_version(struct ccs_io_buffer *head) |
static void ccs_read_version(struct ccs_io_buffer *head) |
2503 |
{ |
{ |
2504 |
if (!head->read_eof) { |
if (head->read_eof) |
2505 |
ccs_io_printf(head, "1.7.0-pre"); |
return; |
2506 |
head->read_eof = true; |
ccs_io_printf(head, "1.7.0"); |
2507 |
} |
head->read_eof = true; |
|
return 0; |
|
2508 |
} |
} |
2509 |
|
|
2510 |
/** |
/** |
2511 |
* ccs_read_self_domain - Get the current process's domainname. |
* ccs_read_self_domain - Get the current process's domainname. |
2512 |
* |
* |
2513 |
* @head: Pointer to "struct ccs_io_buffer". |
* @head: Pointer to "struct ccs_io_buffer". |
|
* |
|
|
* Returns the current process's domainname. |
|
2514 |
*/ |
*/ |
2515 |
static int ccs_read_self_domain(struct ccs_io_buffer *head) |
static void ccs_read_self_domain(struct ccs_io_buffer *head) |
2516 |
{ |
{ |
2517 |
if (!head->read_eof) { |
if (head->read_eof) |
2518 |
/* |
return; |
2519 |
* ccs_current_domain()->domainname != NULL |
/* |
2520 |
* because every process belongs to a domain and |
* ccs_current_domain()->domainname != NULL because every process |
2521 |
* the domain's name cannot be NULL. |
* belongs to a domain and the domain's name cannot be NULL. |
2522 |
*/ |
*/ |
2523 |
ccs_io_printf(head, "%s", |
ccs_io_printf(head, "%s", ccs_current_domain()->domainname->name); |
2524 |
ccs_current_domain()->domainname->name); |
head->read_eof = true; |
|
head->read_eof = true; |
|
|
} |
|
|
return 0; |
|
2525 |
} |
} |
2526 |
|
|
2527 |
/** |
/** |
2606 |
*/ |
*/ |
2607 |
head->read = NULL; |
head->read = NULL; |
2608 |
head->poll = NULL; |
head->poll = NULL; |
2609 |
} else if (type != CCS_QUERY && |
} else if (!head->poll) { |
2610 |
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. |
|
|
*/ |
|
2611 |
if (!head->readbuf_size) |
if (!head->readbuf_size) |
2612 |
head->readbuf_size = 4096 * 2; |
head->readbuf_size = 4096; |
2613 |
head->read_buf = kzalloc(head->readbuf_size, GFP_KERNEL); |
head->read_buf = kzalloc(head->readbuf_size, GFP_KERNEL); |
2614 |
if (!head->read_buf) { |
if (!head->read_buf) { |
2615 |
kfree(head); |
kfree(head); |
2623 |
*/ |
*/ |
2624 |
head->write = NULL; |
head->write = NULL; |
2625 |
} else if (head->write) { |
} else if (head->write) { |
2626 |
head->writebuf_size = 4096 * 2; |
head->writebuf_size = 4096; |
2627 |
head->write_buf = kzalloc(head->writebuf_size, GFP_KERNEL); |
head->write_buf = kzalloc(head->writebuf_size, GFP_KERNEL); |
2628 |
if (!head->write_buf) { |
if (!head->write_buf) { |
2629 |
kfree(head->read_buf); |
kfree(head->read_buf); |
2644 |
ccs_read_control(file, NULL, 0); |
ccs_read_control(file, NULL, 0); |
2645 |
/* |
/* |
2646 |
* If the file is /proc/ccs/query , increment the observer counter. |
* If the file is /proc/ccs/query , increment the observer counter. |
2647 |
* The obserber counter is used by ccs_check_supervisor() to see if |
* The obserber counter is used by ccs_supervisor() to see if |
2648 |
* there is some process monitoring /proc/ccs/query. |
* there is some process monitoring /proc/ccs/query. |
2649 |
*/ |
*/ |
2650 |
else if (type == CCS_QUERY) |
else if (type == CCS_QUERY) |
2659 |
* @wait: Pointer to "poll_table". |
* @wait: Pointer to "poll_table". |
2660 |
* |
* |
2661 |
* Waits for read readiness. |
* Waits for read readiness. |
2662 |
* /proc/ccs/query is handled by /usr/lib/ccs/ccs-queryd and |
* /proc/ccs/query is handled by /usr/sbin/ccs-queryd and |
2663 |
* /proc/ccs/grant_log and /proc/ccs/reject_log are handled by |
* /proc/ccs/grant_log and /proc/ccs/reject_log are handled by |
2664 |
* /usr/lib/ccs/ccs-auditd. |
* /usr/sbin/ccs-auditd . |
2665 |
*/ |
*/ |
2666 |
int ccs_poll_control(struct file *file, poll_table *wait) |
int ccs_poll_control(struct file *file, poll_table *wait) |
2667 |
{ |
{ |
2692 |
return -EFAULT; |
return -EFAULT; |
2693 |
if (mutex_lock_interruptible(&head->io_sem)) |
if (mutex_lock_interruptible(&head->io_sem)) |
2694 |
return -EINTR; |
return -EINTR; |
2695 |
/* Call the policy handler. */ |
while (1) { |
2696 |
len = head->read(head); |
/* Call the policy handler. */ |
2697 |
if (len < 0) |
head->read(head); |
2698 |
goto out; |
/* Write to buffer. */ |
2699 |
/* Write to buffer. */ |
len = head->read_avail; |
2700 |
len = head->read_avail; |
if (len || head->poll || head->read_eof) |
2701 |
|
break; |
2702 |
|
len = head->readbuf_size * 2; |
2703 |
|
cp = kzalloc(len, GFP_KERNEL); |
2704 |
|
if (!cp) { |
2705 |
|
len = -ENOMEM; |
2706 |
|
goto out; |
2707 |
|
} |
2708 |
|
kfree(head->read_buf); |
2709 |
|
head->read_buf = cp; |
2710 |
|
head->readbuf_size = len; |
2711 |
|
} |
2712 |
if (len > buffer_len) |
if (len > buffer_len) |
2713 |
len = buffer_len; |
len = buffer_len; |
2714 |
if (!len) |
if (!len) |
2757 |
while (avail_len > 0) { |
while (avail_len > 0) { |
2758 |
char c; |
char c; |
2759 |
if (head->write_avail >= head->writebuf_size - 1) { |
if (head->write_avail >= head->writebuf_size - 1) { |
2760 |
error = -ENOMEM; |
const int len = head->writebuf_size * 2; |
2761 |
break; |
char *cp = kzalloc(len, GFP_KERNEL); |
2762 |
} else if (get_user(c, buffer)) { |
if (!cp) { |
2763 |
|
error = -ENOMEM; |
2764 |
|
break; |
2765 |
|
} |
2766 |
|
memmove(cp, cp0, head->write_avail); |
2767 |
|
kfree(cp0); |
2768 |
|
head->write_buf = cp; |
2769 |
|
cp0 = cp; |
2770 |
|
head->writebuf_size = len; |
2771 |
|
} |
2772 |
|
if (get_user(c, buffer)) { |
2773 |
error = -EFAULT; |
error = -EFAULT; |
2774 |
break; |
break; |
2775 |
} |
} |