1 |
/* |
/* |
2 |
* security/ccsecurity/policy_io.c |
* security/ccsecurity/policy_io.c |
3 |
* |
* |
4 |
* Copyright (C) 2005-2009 NTT DATA CORPORATION |
* Copyright (C) 2005-2010 NTT DATA CORPORATION |
5 |
* |
* |
6 |
* Version: 1.7.0-pre 2009/07/03 |
* Version: 1.7.2+ 2010/06/04 |
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 |
|
.audit = &ccs_default_profile.preference, |
20 |
|
#ifdef CONFIG_CCSECURITY_AUDIT |
21 |
|
.preference.audit_max_grant_log = CONFIG_CCSECURITY_MAX_GRANT_LOG, |
22 |
|
.preference.audit_max_reject_log = CONFIG_CCSECURITY_MAX_REJECT_LOG, |
23 |
|
#endif |
24 |
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.preference.audit_task_info = true, |
25 |
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.preference.audit_path_info = true, |
26 |
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.preference.enforcing_penalty = 0, |
27 |
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.preference.enforcing_verbose = true, |
28 |
|
.preference.learning_max_entry = CONFIG_CCSECURITY_MAX_ACCEPT_ENTRY, |
29 |
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.preference.learning_verbose = false, |
30 |
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.preference.learning_exec_realpath = true, |
31 |
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.preference.learning_exec_argv0 = true, |
32 |
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.preference.learning_symlink_target = true, |
33 |
|
.preference.permissive_verbose = true |
34 |
|
}; |
35 |
|
|
36 |
static bool ccs_profile_entry_used[CCS_MAX_CONTROL_INDEX + |
/* Profile version. Currently only 20090903 is defined. */ |
37 |
CCS_MAX_CAPABILITY_INDEX + 1]; |
static unsigned int ccs_profile_version; |
38 |
|
|
39 |
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/* Profile table. Memory is allocated as needed. */ |
40 |
|
static struct ccs_profile *ccs_profile_ptr[CCS_MAX_PROFILES]; |
41 |
|
|
42 |
/* String table for functionality that takes 4 modes. */ |
/* String table for functionality that takes 4 modes. */ |
43 |
static const char *ccs_mode_4[4] = { |
static const char *ccs_mode[CCS_CONFIG_MAX_MODE] = { |
44 |
"disabled", "learning", "permissive", "enforcing" |
[CCS_CONFIG_DISABLED] = "disabled", |
45 |
}; |
[CCS_CONFIG_LEARNING] = "learning", |
46 |
/* String table for functionality that takes 2 modes. */ |
[CCS_CONFIG_PERMISSIVE] = "permissive", |
47 |
static const char *ccs_mode_2[4] = { |
[CCS_CONFIG_ENFORCING] = "enforcing" |
|
"disabled", "enabled", "enabled", "enabled" |
|
48 |
}; |
}; |
49 |
|
|
50 |
/* Table for profile. */ |
/* String table for /proc/ccs/profile */ |
51 |
static struct { |
static const char *ccs_mac_keywords[CCS_MAX_MAC_INDEX + |
52 |
const char *keyword; |
CCS_MAX_CAPABILITY_INDEX + |
53 |
unsigned int current_value; |
CCS_MAX_MAC_CATEGORY_INDEX] = { |
54 |
const unsigned int max_value; |
[CCS_MAC_FILE_EXECUTE] |
55 |
} ccs_control_array[CCS_MAX_CONTROL_INDEX] = { |
= "file::execute", |
56 |
[CCS_MAC_FOR_FILE] = { "MAC_FOR_FILE", 0, 3 }, |
[CCS_MAC_FILE_OPEN] |
57 |
[CCS_MAC_FOR_IOCTL] = { "MAC_FOR_IOCTL", 0, 3 }, |
= "file::open", |
58 |
[CCS_MAC_FOR_ARGV0] = { "MAC_FOR_ARGV0", 0, 3 }, |
[CCS_MAC_FILE_CREATE] |
59 |
[CCS_MAC_FOR_ENV] = { "MAC_FOR_ENV", 0, 3 }, |
= "file::create", |
60 |
[CCS_MAC_FOR_NETWORK] = { "MAC_FOR_NETWORK", 0, 3 }, |
[CCS_MAC_FILE_UNLINK] |
61 |
[CCS_MAC_FOR_SIGNAL] = { "MAC_FOR_SIGNAL", 0, 3 }, |
= "file::unlink", |
62 |
[CCS_MAC_FOR_NAMESPACE] = { "MAC_FOR_NAMESPACE", 0, 3 }, |
[CCS_MAC_FILE_MKDIR] |
63 |
[CCS_RESTRICT_AUTOBIND] = { "RESTRICT_AUTOBIND", 0, 1 }, |
= "file::mkdir", |
64 |
[CCS_MAX_ACCEPT_ENTRY] |
[CCS_MAC_FILE_RMDIR] |
65 |
= { "MAX_ACCEPT_ENTRY", CONFIG_CCSECURITY_MAX_ACCEPT_ENTRY, INT_MAX }, |
= "file::rmdir", |
66 |
#ifdef CONFIG_CCSECURITY_AUDIT |
[CCS_MAC_FILE_MKFIFO] |
67 |
[CCS_MAX_GRANT_LOG] |
= "file::mkfifo", |
68 |
= { "MAX_GRANT_LOG", CONFIG_CCSECURITY_MAX_GRANT_LOG, INT_MAX }, |
[CCS_MAC_FILE_MKSOCK] |
69 |
[CCS_MAX_REJECT_LOG] |
= "file::mksock", |
70 |
= { "MAX_REJECT_LOG", CONFIG_CCSECURITY_MAX_REJECT_LOG, INT_MAX }, |
[CCS_MAC_FILE_TRUNCATE] |
71 |
#endif |
= "file::truncate", |
72 |
[CCS_VERBOSE] = { "TOMOYO_VERBOSE", 1, 1 }, |
[CCS_MAC_FILE_SYMLINK] |
73 |
[CCS_SLEEP_PERIOD] |
= "file::symlink", |
74 |
= { "SLEEP_PERIOD", 0, 3000 }, /* in 0.1 second */ |
[CCS_MAC_FILE_REWRITE] |
75 |
|
= "file::rewrite", |
76 |
|
[CCS_MAC_FILE_MKBLOCK] |
77 |
|
= "file::mkblock", |
78 |
|
[CCS_MAC_FILE_MKCHAR] |
79 |
|
= "file::mkchar", |
80 |
|
[CCS_MAC_FILE_LINK] |
81 |
|
= "file::link", |
82 |
|
[CCS_MAC_FILE_RENAME] |
83 |
|
= "file::rename", |
84 |
|
[CCS_MAC_FILE_CHMOD] |
85 |
|
= "file::chmod", |
86 |
|
[CCS_MAC_FILE_CHOWN] |
87 |
|
= "file::chown", |
88 |
|
[CCS_MAC_FILE_CHGRP] |
89 |
|
= "file::chgrp", |
90 |
|
[CCS_MAC_FILE_IOCTL] |
91 |
|
= "file::ioctl", |
92 |
|
[CCS_MAC_FILE_CHROOT] |
93 |
|
= "file::chroot", |
94 |
|
[CCS_MAC_FILE_MOUNT] |
95 |
|
= "file::mount", |
96 |
|
[CCS_MAC_FILE_UMOUNT] |
97 |
|
= "file::umount", |
98 |
|
[CCS_MAC_FILE_PIVOT_ROOT] |
99 |
|
= "file::pivot_root", |
100 |
|
[CCS_MAC_FILE_TRANSIT] |
101 |
|
= "file::transit", |
102 |
|
[CCS_MAC_ENVIRON] |
103 |
|
= "misc::env", |
104 |
|
[CCS_MAC_NETWORK_UDP_BIND] |
105 |
|
= "network::inet_udp_bind", |
106 |
|
[CCS_MAC_NETWORK_UDP_CONNECT] |
107 |
|
= "network::inet_udp_connect", |
108 |
|
[CCS_MAC_NETWORK_TCP_BIND] |
109 |
|
= "network::inet_tcp_bind", |
110 |
|
[CCS_MAC_NETWORK_TCP_LISTEN] |
111 |
|
= "network::inet_tcp_listen", |
112 |
|
[CCS_MAC_NETWORK_TCP_CONNECT] |
113 |
|
= "network::inet_tcp_connect", |
114 |
|
[CCS_MAC_NETWORK_TCP_ACCEPT] |
115 |
|
= "network::inet_tcp_accept", |
116 |
|
[CCS_MAC_NETWORK_RAW_BIND] |
117 |
|
= "network::inet_raw_bind", |
118 |
|
[CCS_MAC_NETWORK_RAW_CONNECT] |
119 |
|
= "network::inet_raw_connect", |
120 |
|
[CCS_MAC_SIGNAL] |
121 |
|
= "ipc::signal", |
122 |
|
[CCS_MAX_MAC_INDEX + CCS_INET_STREAM_SOCKET_CREATE] |
123 |
|
= "capability::inet_tcp_create", |
124 |
|
[CCS_MAX_MAC_INDEX + CCS_INET_STREAM_SOCKET_LISTEN] |
125 |
|
= "capability::inet_tcp_listen", |
126 |
|
[CCS_MAX_MAC_INDEX + CCS_INET_STREAM_SOCKET_CONNECT] |
127 |
|
= "capability::inet_tcp_connect", |
128 |
|
[CCS_MAX_MAC_INDEX + CCS_USE_INET_DGRAM_SOCKET] |
129 |
|
= "capability::use_inet_udp", |
130 |
|
[CCS_MAX_MAC_INDEX + CCS_USE_INET_RAW_SOCKET] |
131 |
|
= "capability::use_inet_ip", |
132 |
|
[CCS_MAX_MAC_INDEX + CCS_USE_ROUTE_SOCKET] |
133 |
|
= "capability::use_route", |
134 |
|
[CCS_MAX_MAC_INDEX + CCS_USE_PACKET_SOCKET] |
135 |
|
= "capability::use_packet", |
136 |
|
[CCS_MAX_MAC_INDEX + CCS_SYS_MOUNT] |
137 |
|
= "capability::SYS_MOUNT", |
138 |
|
[CCS_MAX_MAC_INDEX + CCS_SYS_UMOUNT] |
139 |
|
= "capability::SYS_UMOUNT", |
140 |
|
[CCS_MAX_MAC_INDEX + CCS_SYS_REBOOT] |
141 |
|
= "capability::SYS_REBOOT", |
142 |
|
[CCS_MAX_MAC_INDEX + CCS_SYS_CHROOT] |
143 |
|
= "capability::SYS_CHROOT", |
144 |
|
[CCS_MAX_MAC_INDEX + CCS_SYS_KILL] |
145 |
|
= "capability::SYS_KILL", |
146 |
|
[CCS_MAX_MAC_INDEX + CCS_SYS_VHANGUP] |
147 |
|
= "capability::SYS_VHANGUP", |
148 |
|
[CCS_MAX_MAC_INDEX + CCS_SYS_SETTIME] |
149 |
|
= "capability::SYS_TIME", |
150 |
|
[CCS_MAX_MAC_INDEX + CCS_SYS_NICE] |
151 |
|
= "capability::SYS_NICE", |
152 |
|
[CCS_MAX_MAC_INDEX + CCS_SYS_SETHOSTNAME] |
153 |
|
= "capability::SYS_SETHOSTNAME", |
154 |
|
[CCS_MAX_MAC_INDEX + CCS_USE_KERNEL_MODULE] |
155 |
|
= "capability::use_kernel_module", |
156 |
|
[CCS_MAX_MAC_INDEX + CCS_CREATE_FIFO] |
157 |
|
= "capability::create_fifo", |
158 |
|
[CCS_MAX_MAC_INDEX + CCS_CREATE_BLOCK_DEV] |
159 |
|
= "capability::create_block_dev", |
160 |
|
[CCS_MAX_MAC_INDEX + CCS_CREATE_CHAR_DEV] |
161 |
|
= "capability::create_char_dev", |
162 |
|
[CCS_MAX_MAC_INDEX + CCS_CREATE_UNIX_SOCKET] |
163 |
|
= "capability::create_unix_socket", |
164 |
|
[CCS_MAX_MAC_INDEX + CCS_SYS_LINK] |
165 |
|
= "capability::SYS_LINK", |
166 |
|
[CCS_MAX_MAC_INDEX + CCS_SYS_SYMLINK] |
167 |
|
= "capability::SYS_SYMLINK", |
168 |
|
[CCS_MAX_MAC_INDEX + CCS_SYS_RENAME] |
169 |
|
= "capability::SYS_RENAME", |
170 |
|
[CCS_MAX_MAC_INDEX + CCS_SYS_UNLINK] |
171 |
|
= "capability::SYS_UNLINK", |
172 |
|
[CCS_MAX_MAC_INDEX + CCS_SYS_CHMOD] |
173 |
|
= "capability::SYS_CHMOD", |
174 |
|
[CCS_MAX_MAC_INDEX + CCS_SYS_CHOWN] |
175 |
|
= "capability::SYS_CHOWN", |
176 |
|
[CCS_MAX_MAC_INDEX + CCS_SYS_IOCTL] |
177 |
|
= "capability::SYS_IOCTL", |
178 |
|
[CCS_MAX_MAC_INDEX + CCS_SYS_KEXEC_LOAD] |
179 |
|
= "capability::SYS_KEXEC_LOAD", |
180 |
|
[CCS_MAX_MAC_INDEX + CCS_SYS_PIVOT_ROOT] |
181 |
|
= "capability::SYS_PIVOT_ROOT", |
182 |
|
[CCS_MAX_MAC_INDEX + CCS_SYS_PTRACE] |
183 |
|
= "capability::SYS_PTRACE", |
184 |
|
[CCS_MAX_MAC_INDEX + CCS_CONCEAL_MOUNT] |
185 |
|
= "capability::conceal_mount", |
186 |
|
[CCS_MAX_MAC_INDEX + CCS_MAX_CAPABILITY_INDEX |
187 |
|
+ CCS_MAC_CATEGORY_FILE] = "file", |
188 |
|
[CCS_MAX_MAC_INDEX + CCS_MAX_CAPABILITY_INDEX |
189 |
|
+ CCS_MAC_CATEGORY_NETWORK] = "network", |
190 |
|
[CCS_MAX_MAC_INDEX + CCS_MAX_CAPABILITY_INDEX |
191 |
|
+ CCS_MAC_CATEGORY_MISC] = "misc", |
192 |
|
[CCS_MAX_MAC_INDEX + CCS_MAX_CAPABILITY_INDEX |
193 |
|
+ CCS_MAC_CATEGORY_IPC] = "ipc", |
194 |
|
[CCS_MAX_MAC_INDEX + CCS_MAX_CAPABILITY_INDEX |
195 |
|
+ CCS_MAC_CATEGORY_CAPABILITY] = "capability", |
196 |
}; |
}; |
197 |
|
|
198 |
/* Permit policy management by non-root user? */ |
/* Permit policy management by non-root user? */ |
199 |
static bool ccs_manage_by_non_root; |
static bool ccs_manage_by_non_root; |
200 |
|
|
201 |
/** |
/** |
202 |
* ccs_quiet_setup - Set CCS_VERBOSE=0 by default. |
* ccs_cap2keyword - Convert capability operation to capability name. |
203 |
* |
* |
204 |
* @str: Unused. |
* @operation: The capability index. |
205 |
* |
* |
206 |
* Returns 0. |
* Returns the name of the specified capability's name. |
207 |
*/ |
*/ |
208 |
static int __init ccs_quiet_setup(char *str) |
const char *ccs_cap2keyword(const u8 operation) |
209 |
{ |
{ |
210 |
ccs_control_array[CCS_VERBOSE].current_value = 0; |
return operation < CCS_MAX_CAPABILITY_INDEX |
211 |
return 0; |
? ccs_mac_keywords[CCS_MAX_MAC_INDEX + operation] + 12 : NULL; |
212 |
} |
} |
213 |
|
|
214 |
__setup("CCS_QUIET", ccs_quiet_setup); |
/** |
215 |
|
* ccs_yesno - Return "yes" or "no". |
216 |
|
* |
217 |
|
* @value: Bool value. |
218 |
|
*/ |
219 |
|
static const char *ccs_yesno(const unsigned int value) |
220 |
|
{ |
221 |
|
return value ? "yes" : "no"; |
222 |
|
} |
223 |
|
|
224 |
|
static void ccs_addprintf(char *buffer, int len, const char *fmt, ...) |
225 |
|
{ |
226 |
|
va_list args; |
227 |
|
const int pos = strlen(buffer); |
228 |
|
va_start(args, fmt); |
229 |
|
vsnprintf(buffer + pos, len - pos - 1, fmt, args); |
230 |
|
va_end(args); |
231 |
|
} |
232 |
|
|
233 |
/** |
/** |
234 |
* ccs_io_printf - Transactional printf() to "struct ccs_io_buffer" structure. |
* ccs_flush - Flush queued string to userspace's buffer. |
235 |
* |
* |
236 |
* @head: Pointer to "struct ccs_io_buffer". |
* @head: Pointer to "struct ccs_io_buffer". |
|
* @fmt: The printf()'s format string, followed by parameters. |
|
237 |
* |
* |
238 |
* Returns true on success, false otherwise. |
* Returns true if all data was flushed, false otherwise. |
239 |
|
*/ |
240 |
|
static bool ccs_flush(struct ccs_io_buffer *head) |
241 |
|
{ |
242 |
|
while (head->r.w_pos) { |
243 |
|
const char *w = head->r.w[0]; |
244 |
|
int len = strlen(w); |
245 |
|
if (len) { |
246 |
|
if (len > head->read_user_buf_avail) |
247 |
|
len = head->read_user_buf_avail; |
248 |
|
if (!len) |
249 |
|
return false; |
250 |
|
if (copy_to_user(head->read_user_buf, w, len)) |
251 |
|
return false; |
252 |
|
head->read_user_buf_avail -= len; |
253 |
|
head->read_user_buf += len; |
254 |
|
w += len; |
255 |
|
} |
256 |
|
if (*w) { |
257 |
|
head->r.w[0] = w; |
258 |
|
return false; |
259 |
|
} |
260 |
|
/* Add '\0' for audit logs and query. */ |
261 |
|
if (head->poll) { |
262 |
|
if (!head->read_user_buf_avail || |
263 |
|
copy_to_user(head->read_user_buf, "", 1)) |
264 |
|
return false; |
265 |
|
head->read_user_buf_avail--; |
266 |
|
head->read_user_buf++; |
267 |
|
} |
268 |
|
head->r.w_pos--; |
269 |
|
for (len = 0; len < head->r.w_pos; len++) |
270 |
|
head->r.w[len] = head->r.w[len + 1]; |
271 |
|
} |
272 |
|
head->r.avail = 0; |
273 |
|
return true; |
274 |
|
} |
275 |
|
|
276 |
|
/** |
277 |
|
* ccs_set_string - Queue string to "struct ccs_io_buffer" structure. |
278 |
|
* |
279 |
|
* @head: Pointer to "struct ccs_io_buffer". |
280 |
|
* @string: String to print. |
281 |
|
* |
282 |
|
* Note that @string has to be kept valid until @head is kfree()d. |
283 |
|
* This means that char[] allocated on stack memory cannot be passed to |
284 |
|
* this function. Use ccs_io_printf() for char[] allocated on stack memory. |
285 |
|
*/ |
286 |
|
static void ccs_set_string(struct ccs_io_buffer *head, const char *string) |
287 |
|
{ |
288 |
|
if (head->r.w_pos < CCS_MAX_IO_READ_QUEUE) { |
289 |
|
head->r.w[head->r.w_pos++] = string; |
290 |
|
ccs_flush(head); |
291 |
|
} else |
292 |
|
WARN_ON(1); |
293 |
|
} |
294 |
|
|
295 |
|
/** |
296 |
|
* ccs_io_printf - printf() to "struct ccs_io_buffer" structure. |
297 |
* |
* |
298 |
* The snprintf() will truncate, but ccs_io_printf() won't. |
* @head: Pointer to "struct ccs_io_buffer". |
299 |
|
* @fmt: The printf()'s format string, followed by parameters. |
300 |
*/ |
*/ |
301 |
bool ccs_io_printf(struct ccs_io_buffer *head, const char *fmt, ...) |
void ccs_io_printf(struct ccs_io_buffer *head, const char *fmt, ...) |
302 |
{ |
{ |
303 |
va_list args; |
va_list args; |
304 |
int len; |
int len; |
305 |
int pos = head->read_avail; |
int pos = head->r.avail; |
306 |
int size = head->readbuf_size - pos; |
int size = head->readbuf_size - pos; |
307 |
if (size <= 0) |
if (size <= 0) |
308 |
return false; |
return; |
309 |
va_start(args, fmt); |
va_start(args, fmt); |
310 |
len = vsnprintf(head->read_buf + pos, size, fmt, args); |
len = vsnprintf(head->read_buf + pos, size, fmt, args) + 1; |
311 |
va_end(args); |
va_end(args); |
312 |
if (pos + len >= head->readbuf_size) |
if (pos + len >= head->readbuf_size) { |
313 |
return false; |
WARN_ON(1); |
314 |
head->read_avail += len; |
return; |
315 |
return true; |
} |
316 |
|
head->r.avail += len; |
317 |
|
ccs_set_string(head, head->read_buf + pos); |
318 |
|
} |
319 |
|
|
320 |
|
static void ccs_set_space(struct ccs_io_buffer *head) |
321 |
|
{ |
322 |
|
ccs_set_string(head, " "); |
323 |
|
} |
324 |
|
|
325 |
|
static bool ccs_set_lf(struct ccs_io_buffer *head) |
326 |
|
{ |
327 |
|
ccs_set_string(head, "\n"); |
328 |
|
return !head->r.w_pos; |
329 |
} |
} |
330 |
|
|
331 |
/** |
/** |
332 |
* ccs_find_or_assign_new_profile - Create a new profile. |
* ccs_assign_profile - Create a new profile. |
333 |
* |
* |
334 |
* @profile: Profile number to create. |
* @profile: Profile number to create. |
335 |
* |
* |
336 |
* Returns pointer to "struct ccs_profile" on success, NULL otherwise. |
* Returns pointer to "struct ccs_profile" on success, NULL otherwise. |
337 |
*/ |
*/ |
338 |
struct ccs_profile *ccs_find_or_assign_new_profile(const unsigned int |
static struct ccs_profile *ccs_assign_profile(const unsigned int profile) |
|
profile) |
|
339 |
{ |
{ |
340 |
struct ccs_profile *ptr; |
struct ccs_profile *ptr; |
341 |
struct ccs_profile *entry; |
struct ccs_profile *entry; |
342 |
int i; |
if (profile >= CCS_MAX_PROFILES) |
|
if (profile >= MAX_PROFILES) |
|
343 |
return NULL; |
return NULL; |
344 |
ptr = ccs_profile_ptr[profile]; |
ptr = ccs_profile_ptr[profile]; |
345 |
if (ptr) |
if (ptr) |
346 |
return ptr; |
return ptr; |
347 |
entry = kzalloc(sizeof(*entry), GFP_KERNEL); |
entry = kzalloc(sizeof(*entry), CCS_GFP_FLAGS); |
348 |
mutex_lock(&ccs_policy_lock); |
if (mutex_lock_interruptible(&ccs_policy_lock)) |
349 |
|
goto out; |
350 |
ptr = ccs_profile_ptr[profile]; |
ptr = ccs_profile_ptr[profile]; |
351 |
if (!ptr && ccs_memory_ok(entry, sizeof(*entry))) { |
if (!ptr && ccs_memory_ok(entry, sizeof(*entry))) { |
352 |
ptr = entry; |
ptr = entry; |
353 |
for (i = 0; i < CCS_MAX_CONTROL_INDEX; i++) |
ptr->audit = &ccs_default_profile.preference; |
354 |
ptr->value[i] = ccs_control_array[i].current_value; |
ptr->learning = &ccs_default_profile.preference; |
355 |
/* |
ptr->permissive = &ccs_default_profile.preference; |
356 |
* Needn't to initialize "ptr->capability_value" |
ptr->enforcing = &ccs_default_profile.preference; |
357 |
* because they are always 0. |
ptr->default_config = CCS_CONFIG_DISABLED | |
358 |
*/ |
CCS_CONFIG_WANT_GRANT_LOG | CCS_CONFIG_WANT_REJECT_LOG; |
359 |
|
memset(ptr->config, CCS_CONFIG_USE_DEFAULT, |
360 |
|
sizeof(ptr->config)); |
361 |
mb(); /* Avoid out-of-order execution. */ |
mb(); /* Avoid out-of-order execution. */ |
362 |
ccs_profile_ptr[profile] = ptr; |
ccs_profile_ptr[profile] = ptr; |
363 |
entry = NULL; |
entry = NULL; |
364 |
} |
} |
365 |
mutex_unlock(&ccs_policy_lock); |
mutex_unlock(&ccs_policy_lock); |
366 |
|
out: |
367 |
kfree(entry); |
kfree(entry); |
368 |
return ptr; |
return ptr; |
369 |
} |
} |
370 |
|
|
371 |
/** |
/** |
372 |
|
* ccs_check_profile - Check all profiles currently assigned to domains are defined. |
373 |
|
*/ |
374 |
|
static void ccs_check_profile(void) |
375 |
|
{ |
376 |
|
struct ccs_domain_info *domain; |
377 |
|
const int idx = ccs_read_lock(); |
378 |
|
ccs_policy_loaded = true; |
379 |
|
list_for_each_entry_rcu(domain, &ccs_domain_list, list) { |
380 |
|
const u8 profile = domain->profile; |
381 |
|
if (ccs_profile_ptr[profile]) |
382 |
|
continue; |
383 |
|
panic("Profile %u (used by '%s') not defined.\n", |
384 |
|
profile, domain->domainname->name); |
385 |
|
} |
386 |
|
ccs_read_unlock(idx); |
387 |
|
if (ccs_profile_version != 20090903) |
388 |
|
panic("Profile version %u is not supported.\n", |
389 |
|
ccs_profile_version); |
390 |
|
printk(KERN_INFO "CCSecurity: 1.7.2+ 2010/06/04\n"); |
391 |
|
printk(KERN_INFO "Mandatory Access Control activated.\n"); |
392 |
|
} |
393 |
|
|
394 |
|
/** |
395 |
|
* ccs_profile - Find a profile. |
396 |
|
* |
397 |
|
* @profile: Profile number to find. |
398 |
|
* |
399 |
|
* Returns pointer to "struct ccs_profile". |
400 |
|
*/ |
401 |
|
struct ccs_profile *ccs_profile(const u8 profile) |
402 |
|
{ |
403 |
|
struct ccs_profile *ptr = ccs_profile_ptr[profile]; |
404 |
|
if (!ccs_policy_loaded) |
405 |
|
return &ccs_default_profile; |
406 |
|
BUG_ON(!ptr); |
407 |
|
return ptr; |
408 |
|
} |
409 |
|
|
410 |
|
static s8 ccs_find_yesno(const char *string, const char *find) |
411 |
|
{ |
412 |
|
const char *cp = strstr(string, find); |
413 |
|
if (cp) { |
414 |
|
cp += strlen(find); |
415 |
|
if (!strncmp(cp, "=yes", 4)) |
416 |
|
return 1; |
417 |
|
else if (!strncmp(cp, "=no", 3)) |
418 |
|
return 0; |
419 |
|
} |
420 |
|
return -1; |
421 |
|
} |
422 |
|
|
423 |
|
static void ccs_set_bool(bool *b, const char *string, const char *find) |
424 |
|
{ |
425 |
|
switch (ccs_find_yesno(string, find)) { |
426 |
|
case 1: |
427 |
|
*b = true; |
428 |
|
break; |
429 |
|
case 0: |
430 |
|
*b = false; |
431 |
|
break; |
432 |
|
} |
433 |
|
} |
434 |
|
|
435 |
|
static void ccs_set_uint(unsigned int *i, const char *string, const char *find) |
436 |
|
{ |
437 |
|
const char *cp = strstr(string, find); |
438 |
|
if (cp) |
439 |
|
sscanf(cp + strlen(find), "=%u", i); |
440 |
|
} |
441 |
|
|
442 |
|
static void ccs_set_pref(const char *name, const char *value, |
443 |
|
const bool use_default, struct ccs_profile *profile) |
444 |
|
{ |
445 |
|
struct ccs_preference **pref; |
446 |
|
bool *verbose; |
447 |
|
if (!strcmp(name, "audit")) { |
448 |
|
if (use_default) { |
449 |
|
pref = &profile->audit; |
450 |
|
goto set_default; |
451 |
|
} |
452 |
|
profile->audit = &profile->preference; |
453 |
|
#ifdef CONFIG_CCSECURITY_AUDIT |
454 |
|
ccs_set_uint(&profile->preference.audit_max_grant_log, value, |
455 |
|
"max_grant_log"); |
456 |
|
ccs_set_uint(&profile->preference.audit_max_reject_log, value, |
457 |
|
"max_reject_log"); |
458 |
|
#endif |
459 |
|
ccs_set_bool(&profile->preference.audit_task_info, value, |
460 |
|
"task_info"); |
461 |
|
ccs_set_bool(&profile->preference.audit_path_info, value, |
462 |
|
"path_info"); |
463 |
|
return; |
464 |
|
} |
465 |
|
if (!strcmp(name, "enforcing")) { |
466 |
|
if (use_default) { |
467 |
|
pref = &profile->enforcing; |
468 |
|
goto set_default; |
469 |
|
} |
470 |
|
profile->enforcing = &profile->preference; |
471 |
|
ccs_set_uint(&profile->preference.enforcing_penalty, value, |
472 |
|
"penalty"); |
473 |
|
verbose = &profile->preference.enforcing_verbose; |
474 |
|
goto set_verbose; |
475 |
|
} |
476 |
|
if (!strcmp(name, "permissive")) { |
477 |
|
if (use_default) { |
478 |
|
pref = &profile->permissive; |
479 |
|
goto set_default; |
480 |
|
} |
481 |
|
profile->permissive = &profile->preference; |
482 |
|
verbose = &profile->preference.permissive_verbose; |
483 |
|
goto set_verbose; |
484 |
|
} |
485 |
|
if (!strcmp(name, "learning")) { |
486 |
|
if (use_default) { |
487 |
|
pref = &profile->learning; |
488 |
|
goto set_default; |
489 |
|
} |
490 |
|
profile->learning = &profile->preference; |
491 |
|
ccs_set_uint(&profile->preference.learning_max_entry, value, |
492 |
|
"max_entry"); |
493 |
|
ccs_set_bool(&profile->preference.learning_exec_realpath, |
494 |
|
value, "exec.realpath"); |
495 |
|
ccs_set_bool(&profile->preference.learning_exec_argv0, value, |
496 |
|
"exec.argv0"); |
497 |
|
ccs_set_bool(&profile->preference.learning_symlink_target, |
498 |
|
value, "symlink.target"); |
499 |
|
verbose = &profile->preference.learning_verbose; |
500 |
|
goto set_verbose; |
501 |
|
} |
502 |
|
return; |
503 |
|
set_default: |
504 |
|
*pref = &ccs_default_profile.preference; |
505 |
|
return; |
506 |
|
set_verbose: |
507 |
|
ccs_set_bool(verbose, value, "verbose"); |
508 |
|
} |
509 |
|
|
510 |
|
static int ccs_set_mode(char *name, const char *value, const bool use_default, |
511 |
|
struct ccs_profile *profile) |
512 |
|
{ |
513 |
|
u8 i; |
514 |
|
u8 config; |
515 |
|
if (!strcmp(name, "CONFIG")) { |
516 |
|
i = CCS_MAX_MAC_INDEX + CCS_MAX_CAPABILITY_INDEX |
517 |
|
+ CCS_MAX_MAC_CATEGORY_INDEX; |
518 |
|
config = profile->default_config; |
519 |
|
} else if (ccs_str_starts(&name, "CONFIG::")) { |
520 |
|
config = 0; |
521 |
|
for (i = 0; i < CCS_MAX_MAC_INDEX + CCS_MAX_CAPABILITY_INDEX |
522 |
|
+ CCS_MAX_MAC_CATEGORY_INDEX; i++) { |
523 |
|
if (strcmp(name, ccs_mac_keywords[i])) |
524 |
|
continue; |
525 |
|
config = profile->config[i]; |
526 |
|
break; |
527 |
|
} |
528 |
|
if (i == CCS_MAX_MAC_INDEX + CCS_MAX_CAPABILITY_INDEX |
529 |
|
+ CCS_MAX_MAC_CATEGORY_INDEX) |
530 |
|
return -EINVAL; |
531 |
|
} else { |
532 |
|
return -EINVAL; |
533 |
|
} |
534 |
|
if (use_default) { |
535 |
|
config = CCS_CONFIG_USE_DEFAULT; |
536 |
|
} else { |
537 |
|
u8 mode; |
538 |
|
for (mode = 0; mode < CCS_CONFIG_MAX_MODE; mode++) |
539 |
|
if (strstr(value, ccs_mode[mode])) |
540 |
|
/* |
541 |
|
* Update lower 3 bits in order to distinguish |
542 |
|
* 'config' from 'CCS_CONFIG_USE_DEAFULT'. |
543 |
|
*/ |
544 |
|
config = (config & ~7) | mode; |
545 |
|
#ifdef CONFIG_CCSECURITY_AUDIT |
546 |
|
if (config != CCS_CONFIG_USE_DEFAULT) { |
547 |
|
switch (ccs_find_yesno(value, "grant_log")) { |
548 |
|
case 1: |
549 |
|
config |= CCS_CONFIG_WANT_GRANT_LOG; |
550 |
|
break; |
551 |
|
case 0: |
552 |
|
config &= ~CCS_CONFIG_WANT_GRANT_LOG; |
553 |
|
break; |
554 |
|
} |
555 |
|
switch (ccs_find_yesno(value, "reject_log")) { |
556 |
|
case 1: |
557 |
|
config |= CCS_CONFIG_WANT_REJECT_LOG; |
558 |
|
break; |
559 |
|
case 0: |
560 |
|
config &= ~CCS_CONFIG_WANT_REJECT_LOG; |
561 |
|
break; |
562 |
|
} |
563 |
|
} |
564 |
|
#endif |
565 |
|
} |
566 |
|
if (i < CCS_MAX_MAC_INDEX + CCS_MAX_CAPABILITY_INDEX |
567 |
|
+ CCS_MAX_MAC_CATEGORY_INDEX) |
568 |
|
profile->config[i] = config; |
569 |
|
else if (config != CCS_CONFIG_USE_DEFAULT) |
570 |
|
profile->default_config = config; |
571 |
|
return 0; |
572 |
|
} |
573 |
|
|
574 |
|
/** |
575 |
* ccs_write_profile - Write profile table. |
* ccs_write_profile - Write profile table. |
576 |
* |
* |
577 |
* @head: Pointer to "struct ccs_io_buffer". |
* @head: Pointer to "struct ccs_io_buffer". |
581 |
static int ccs_write_profile(struct ccs_io_buffer *head) |
static int ccs_write_profile(struct ccs_io_buffer *head) |
582 |
{ |
{ |
583 |
char *data = head->write_buf; |
char *data = head->write_buf; |
584 |
unsigned int i; |
bool use_default = false; |
|
unsigned int value; |
|
585 |
char *cp; |
char *cp; |
586 |
struct ccs_profile *ccs_profile; |
int i; |
587 |
|
struct ccs_profile *profile; |
588 |
|
if (sscanf(data, "PROFILE_VERSION=%u", &ccs_profile_version) == 1) |
589 |
|
return 0; |
590 |
i = simple_strtoul(data, &cp, 10); |
i = simple_strtoul(data, &cp, 10); |
591 |
if (data != cp) { |
if (data == cp) { |
592 |
|
profile = &ccs_default_profile; |
593 |
|
} else { |
594 |
if (*cp != '-') |
if (*cp != '-') |
595 |
return -EINVAL; |
return -EINVAL; |
596 |
data = cp + 1; |
data = cp + 1; |
597 |
|
profile = ccs_assign_profile(i); |
598 |
|
if (!profile) |
599 |
|
return -EINVAL; |
600 |
} |
} |
|
ccs_profile = ccs_find_or_assign_new_profile(i); |
|
|
if (!ccs_profile) |
|
|
return -EINVAL; |
|
601 |
cp = strchr(data, '='); |
cp = strchr(data, '='); |
602 |
if (!cp) |
if (!cp) |
603 |
return -EINVAL; |
return -EINVAL; |
604 |
*cp = '\0'; |
*cp++ = '\0'; |
605 |
|
if (profile != &ccs_default_profile) |
606 |
|
use_default = strstr(cp, "use_default") != NULL; |
607 |
|
if (ccs_str_starts(&data, "PREFERENCE::")) { |
608 |
|
ccs_set_pref(data, cp, use_default, profile); |
609 |
|
return 0; |
610 |
|
} |
611 |
|
if (profile == &ccs_default_profile) |
612 |
|
return -EINVAL; |
613 |
if (!strcmp(data, "COMMENT")) { |
if (!strcmp(data, "COMMENT")) { |
614 |
const struct ccs_path_info *new_comment |
const struct ccs_path_info *old_comment = profile->comment; |
615 |
= ccs_get_name(cp + 1); |
profile->comment = ccs_get_name(cp); |
|
const struct ccs_path_info *old_comment; |
|
|
/* Protect reader from ccs_put_name(). */ |
|
|
/***** CRITICAL SECTION START *****/ |
|
|
spin_lock(&ccs_profile_comment_lock); |
|
|
old_comment = ccs_profile->comment; |
|
|
ccs_profile->comment = new_comment; |
|
|
spin_unlock(&ccs_profile_comment_lock); |
|
|
/***** CRITICAL SECTION END *****/ |
|
616 |
ccs_put_name(old_comment); |
ccs_put_name(old_comment); |
|
ccs_profile_entry_used[0] = true; |
|
617 |
return 0; |
return 0; |
618 |
} |
} |
619 |
if (ccs_str_starts(&data, KEYWORD_MAC_FOR_CAPABILITY)) { |
return ccs_set_mode(data, cp, use_default, profile); |
620 |
if (sscanf(cp + 1, "%u", &value) != 1) { |
} |
621 |
for (i = 0; i < 4; i++) { |
|
622 |
if (strcmp(cp + 1, ccs_mode_4[i])) |
static void ccs_print_preference(struct ccs_io_buffer *head, const int idx) |
623 |
continue; |
{ |
624 |
value = i; |
struct ccs_preference *pref = &ccs_default_profile.preference; |
625 |
break; |
const struct ccs_profile *profile = idx >= 0 ? |
626 |
} |
ccs_profile_ptr[idx] : NULL; |
627 |
if (i == 4) |
char buffer[16] = ""; |
628 |
return -EINVAL; |
if (profile) { |
629 |
} |
buffer[sizeof(buffer) - 1] = '\0'; |
630 |
if (value > 3) |
snprintf(buffer, sizeof(buffer) - 1, "%u-", idx); |
|
value = 3; |
|
|
for (i = 0; i < CCS_MAX_CAPABILITY_INDEX; i++) { |
|
|
if (strcmp(data, ccs_capability_control_keyword[i])) |
|
|
continue; |
|
|
ccs_profile->capability_value[i] = value; |
|
|
ccs_profile_entry_used[i + 1 + CCS_MAX_CONTROL_INDEX] |
|
|
= true; |
|
|
return 0; |
|
|
} |
|
|
return -EINVAL; |
|
631 |
} |
} |
632 |
for (i = 0; i < CCS_MAX_CONTROL_INDEX; i++) { |
if (profile) { |
633 |
if (strcmp(data, ccs_control_array[i].keyword)) |
pref = profile->audit; |
634 |
continue; |
if (pref == &ccs_default_profile.preference) |
635 |
if (sscanf(cp + 1, "%u", &value) != 1) { |
goto skip0; |
|
int j; |
|
|
const char **modes; |
|
|
switch (i) { |
|
|
case CCS_RESTRICT_AUTOBIND: |
|
|
case CCS_VERBOSE: |
|
|
modes = ccs_mode_2; |
|
|
break; |
|
|
default: |
|
|
modes = ccs_mode_4; |
|
|
break; |
|
|
} |
|
|
for (j = 0; j < 4; j++) { |
|
|
if (strcmp(cp + 1, modes[j])) |
|
|
continue; |
|
|
value = j; |
|
|
break; |
|
|
} |
|
|
if (j == 4) |
|
|
return -EINVAL; |
|
|
} else if (value > ccs_control_array[i].max_value) { |
|
|
value = ccs_control_array[i].max_value; |
|
|
} |
|
|
ccs_profile->value[i] = value; |
|
|
ccs_profile_entry_used[i + 1] = true; |
|
|
return 0; |
|
636 |
} |
} |
637 |
return -EINVAL; |
ccs_io_printf(head, "%sPREFERENCE::%s={ " |
638 |
|
#ifdef CONFIG_CCSECURITY_AUDIT |
639 |
|
"max_grant_log=%u max_reject_log=%u " |
640 |
|
#endif |
641 |
|
"task_info=%s path_info=%s }\n", buffer, |
642 |
|
"audit", |
643 |
|
#ifdef CONFIG_CCSECURITY_AUDIT |
644 |
|
pref->audit_max_grant_log, |
645 |
|
pref->audit_max_reject_log, |
646 |
|
#endif |
647 |
|
ccs_yesno(pref->audit_task_info), |
648 |
|
ccs_yesno(pref->audit_path_info)); |
649 |
|
skip0: |
650 |
|
if (profile) { |
651 |
|
pref = profile->learning; |
652 |
|
if (pref == &ccs_default_profile.preference) |
653 |
|
goto skip1; |
654 |
|
} |
655 |
|
ccs_io_printf(head, "%sPREFERENCE::%s={ " |
656 |
|
"verbose=%s max_entry=%u exec.realpath=%s " |
657 |
|
"exec.argv0=%s symlink.target=%s }\n", |
658 |
|
buffer, "learning", |
659 |
|
ccs_yesno(pref->learning_verbose), |
660 |
|
pref->learning_max_entry, |
661 |
|
ccs_yesno(pref->learning_exec_realpath), |
662 |
|
ccs_yesno(pref->learning_exec_argv0), |
663 |
|
ccs_yesno(pref->learning_symlink_target)); |
664 |
|
skip1: |
665 |
|
if (profile) { |
666 |
|
pref = profile->permissive; |
667 |
|
if (pref == &ccs_default_profile.preference) |
668 |
|
goto skip2; |
669 |
|
} |
670 |
|
ccs_io_printf(head, "%sPREFERENCE::%s={ verbose=%s }\n", |
671 |
|
buffer, "permissive", |
672 |
|
ccs_yesno(pref->permissive_verbose)); |
673 |
|
skip2: |
674 |
|
if (profile) { |
675 |
|
pref = profile->enforcing; |
676 |
|
if (pref == &ccs_default_profile.preference) |
677 |
|
return; |
678 |
|
} |
679 |
|
ccs_io_printf(head, "%sPREFERENCE::%s={ verbose=%s " |
680 |
|
"penalty=%u }\n", buffer, "enforcing", |
681 |
|
ccs_yesno(pref->enforcing_verbose), |
682 |
|
pref->enforcing_penalty); |
683 |
|
} |
684 |
|
|
685 |
|
static void ccs_print_config(struct ccs_io_buffer *head, const u8 config) |
686 |
|
{ |
687 |
|
ccs_io_printf(head, "={ mode=%s", ccs_mode[config & 3]); |
688 |
|
#ifdef CONFIG_CCSECURITY_AUDIT |
689 |
|
ccs_io_printf(head, " grant_log=%s reject_log=%s", |
690 |
|
ccs_yesno(config & CCS_CONFIG_WANT_GRANT_LOG), |
691 |
|
ccs_yesno(config & CCS_CONFIG_WANT_REJECT_LOG)); |
692 |
|
#endif |
693 |
|
ccs_set_string(head, " }\n"); |
694 |
} |
} |
695 |
|
|
696 |
/** |
/** |
697 |
* ccs_read_profile - Read profile table. |
* ccs_read_profile - Read profile table. |
698 |
* |
* |
699 |
* @head: Pointer to "struct ccs_io_buffer". |
* @head: Pointer to "struct ccs_io_buffer". |
|
* |
|
|
* Returns 0. |
|
700 |
*/ |
*/ |
701 |
static int ccs_read_profile(struct ccs_io_buffer *head) |
static void ccs_read_profile(struct ccs_io_buffer *head) |
702 |
{ |
{ |
703 |
static const int ccs_total |
u8 index; |
704 |
= CCS_MAX_CONTROL_INDEX + CCS_MAX_CAPABILITY_INDEX + 1; |
const struct ccs_profile *profile; |
705 |
int step; |
next: |
706 |
if (head->read_eof) |
index = head->r.index; |
707 |
return 0; |
profile = ccs_profile_ptr[index]; |
708 |
for (step = head->read_step; step < MAX_PROFILES * ccs_total; step++) { |
switch (head->r.step) { |
709 |
const u8 index = step / ccs_total; |
case 0: |
710 |
u8 type = step % ccs_total; |
ccs_io_printf(head, "PROFILE_VERSION=%s\n", "20090903"); |
711 |
const struct ccs_profile *ccs_profile = ccs_profile_ptr[index]; |
ccs_print_preference(head, -1); |
712 |
head->read_step = step; |
head->r.step++; |
713 |
if (!ccs_profile) |
break; |
714 |
continue; |
case 1: |
715 |
if (!ccs_profile_entry_used[type]) |
for ( ; head->r.index < CCS_MAX_PROFILES; |
716 |
continue; |
head->r.index++) |
717 |
if (!type) { /* Print profile' comment tag. */ |
if (ccs_profile_ptr[head->r.index]) |
718 |
bool done; |
break; |
719 |
/***** CRITICAL SECTION START *****/ |
if (head->r.index == CCS_MAX_PROFILES) |
720 |
spin_lock(&ccs_profile_comment_lock); |
return; |
721 |
done = ccs_io_printf(head, "%u-COMMENT=%s\n", |
head->r.step++; |
722 |
index, ccs_profile->comment ? |
break; |
723 |
ccs_profile->comment->name : ""); |
case 2: |
724 |
spin_unlock(&ccs_profile_comment_lock); |
{ |
725 |
/***** CRITICAL SECTION END *****/ |
const struct ccs_path_info *comment = profile->comment; |
726 |
if (!done) |
ccs_io_printf(head, "%u-COMMENT=", index); |
727 |
break; |
ccs_set_string(head, comment ? comment->name : ""); |
728 |
continue; |
ccs_set_lf(head); |
729 |
|
head->r.step++; |
730 |
} |
} |
731 |
type--; |
break; |
732 |
if (type >= CCS_MAX_CONTROL_INDEX) { |
case 3: |
733 |
const int i = type - CCS_MAX_CONTROL_INDEX; |
{ |
734 |
const u8 value = ccs_profile->capability_value[i]; |
ccs_io_printf(head, "%u-%s", index, "CONFIG"); |
735 |
if (!ccs_io_printf(head, |
ccs_print_config(head, profile->default_config); |
736 |
"%u-" KEYWORD_MAC_FOR_CAPABILITY |
head->r.bit = 0; |
737 |
"%s=%s\n", index, |
head->r.step++; |
738 |
ccs_capability_control_keyword[i], |
} |
739 |
ccs_mode_4[value])) |
break; |
740 |
break; |
case 4: |
741 |
} else { |
for ( ; head->r.bit < CCS_MAX_MAC_INDEX |
742 |
const unsigned int value = ccs_profile->value[type]; |
+ CCS_MAX_CAPABILITY_INDEX |
743 |
const char **modes = NULL; |
+ CCS_MAX_MAC_CATEGORY_INDEX; head->r.bit++) { |
744 |
const char *keyword = ccs_control_array[type].keyword; |
const u8 i = head->r.bit; |
745 |
switch (ccs_control_array[type].max_value) { |
const u8 config = profile->config[i]; |
746 |
case 3: |
if (config == CCS_CONFIG_USE_DEFAULT) |
747 |
modes = ccs_mode_4; |
continue; |
748 |
break; |
ccs_io_printf(head, "%u-%s%s", index, "CONFIG::", |
749 |
case 1: |
ccs_mac_keywords[i]); |
750 |
modes = ccs_mode_2; |
ccs_print_config(head, config); |
751 |
break; |
head->r.bit++; |
752 |
} |
break; |
|
if (modes) { |
|
|
if (!ccs_io_printf(head, "%u-%s=%s\n", index, |
|
|
keyword, modes[value])) |
|
|
break; |
|
|
} else { |
|
|
if (!ccs_io_printf(head, "%u-%s=%u\n", index, |
|
|
keyword, value)) |
|
|
break; |
|
|
} |
|
753 |
} |
} |
754 |
|
if (head->r.bit == CCS_MAX_MAC_INDEX |
755 |
|
+ CCS_MAX_CAPABILITY_INDEX |
756 |
|
+ CCS_MAX_MAC_CATEGORY_INDEX) { |
757 |
|
ccs_print_preference(head, index); |
758 |
|
head->r.index++; |
759 |
|
head->r.step = 1; |
760 |
|
} |
761 |
|
break; |
762 |
} |
} |
763 |
if (step == MAX_PROFILES * ccs_total) |
if (ccs_flush(head)) |
764 |
head->read_eof = true; |
goto next; |
|
return 0; |
|
765 |
} |
} |
766 |
|
|
767 |
/* The list for "struct ccs_policy_manager_entry". */ |
static bool ccs_same_manager_entry(const struct ccs_acl_head *a, |
768 |
LIST_HEAD(ccs_policy_manager_list); |
const struct ccs_acl_head *b) |
769 |
|
{ |
770 |
|
return container_of(a, struct ccs_manager, head)->manager |
771 |
|
== container_of(b, struct ccs_manager, head)->manager; |
772 |
|
} |
773 |
|
|
774 |
/** |
/** |
775 |
* ccs_update_manager_entry - Add a manager entry. |
* ccs_update_manager_entry - Add a manager entry. |
781 |
*/ |
*/ |
782 |
static int ccs_update_manager_entry(const char *manager, const bool is_delete) |
static int ccs_update_manager_entry(const char *manager, const bool is_delete) |
783 |
{ |
{ |
784 |
struct ccs_policy_manager_entry *entry = NULL; |
struct ccs_manager e = { }; |
|
struct ccs_policy_manager_entry *ptr; |
|
|
const struct ccs_path_info *saved_manager; |
|
785 |
int error = is_delete ? -ENOENT : -ENOMEM; |
int error = is_delete ? -ENOENT : -ENOMEM; |
786 |
bool is_domain = false; |
if (ccs_domain_def(manager)) { |
787 |
if (ccs_is_domain_def(manager)) { |
if (!ccs_correct_domain(manager)) |
|
if (!ccs_is_correct_domain(manager)) |
|
788 |
return -EINVAL; |
return -EINVAL; |
789 |
is_domain = true; |
e.is_domain = true; |
790 |
} else { |
} else { |
791 |
if (!ccs_is_correct_path(manager, 1, -1, -1)) |
if (!ccs_correct_path(manager)) |
792 |
return -EINVAL; |
return -EINVAL; |
793 |
} |
} |
794 |
saved_manager = ccs_get_name(manager); |
e.manager = ccs_get_name(manager); |
795 |
if (!saved_manager) |
if (!e.manager) |
796 |
return -ENOMEM; |
return error; |
797 |
if (!is_delete) |
error = ccs_update_policy(&e.head, sizeof(e), is_delete, |
798 |
entry = kzalloc(sizeof(*entry), GFP_KERNEL); |
&ccs_policy_list[CCS_ID_MANAGER], |
799 |
mutex_lock(&ccs_policy_lock); |
ccs_same_manager_entry); |
800 |
list_for_each_entry_rcu(ptr, &ccs_policy_manager_list, list) { |
ccs_put_name(e.manager); |
|
if (ptr->manager != saved_manager) |
|
|
continue; |
|
|
ptr->is_deleted = is_delete; |
|
|
error = 0; |
|
|
break; |
|
|
} |
|
|
if (!is_delete && error && ccs_memory_ok(entry, sizeof(*entry))) { |
|
|
entry->manager = saved_manager; |
|
|
saved_manager = NULL; |
|
|
entry->is_domain = is_domain; |
|
|
list_add_tail_rcu(&entry->list, &ccs_policy_manager_list); |
|
|
entry = NULL; |
|
|
error = 0; |
|
|
} |
|
|
mutex_unlock(&ccs_policy_lock); |
|
|
ccs_put_name(saved_manager); |
|
|
kfree(entry); |
|
801 |
return error; |
return error; |
802 |
} |
} |
803 |
|
|
804 |
/** |
/** |
805 |
* ccs_write_manager_policy - Write manager policy. |
* ccs_write_manager - Write manager policy. |
806 |
* |
* |
807 |
* @head: Pointer to "struct ccs_io_buffer". |
* @head: Pointer to "struct ccs_io_buffer". |
808 |
* |
* |
809 |
* Returns 0 on success, negative value otherwise. |
* Returns 0 on success, negative value otherwise. |
810 |
*/ |
*/ |
811 |
static int ccs_write_manager_policy(struct ccs_io_buffer *head) |
static int ccs_write_manager(struct ccs_io_buffer *head) |
812 |
{ |
{ |
813 |
char *data = head->write_buf; |
char *data = head->write_buf; |
814 |
bool is_delete = ccs_str_starts(&data, KEYWORD_DELETE); |
bool is_delete = ccs_str_starts(&data, CCS_KEYWORD_DELETE); |
815 |
if (!strcmp(data, "manage_by_non_root")) { |
if (!strcmp(data, "manage_by_non_root")) { |
816 |
ccs_manage_by_non_root = !is_delete; |
ccs_manage_by_non_root = !is_delete; |
817 |
return 0; |
return 0; |
820 |
} |
} |
821 |
|
|
822 |
/** |
/** |
823 |
* ccs_read_manager_policy - Read manager policy. |
* ccs_read_manager - Read manager policy. |
824 |
* |
* |
825 |
* @head: Pointer to "struct ccs_io_buffer". |
* @head: Pointer to "struct ccs_io_buffer". |
826 |
* |
* |
|
* Returns 0. |
|
|
* |
|
827 |
* Caller holds ccs_read_lock(). |
* Caller holds ccs_read_lock(). |
828 |
*/ |
*/ |
829 |
static int ccs_read_manager_policy(struct ccs_io_buffer *head) |
static void ccs_read_manager(struct ccs_io_buffer *head) |
830 |
{ |
{ |
831 |
struct list_head *pos; |
if (head->r.eof) |
832 |
ccs_check_read_lock(); |
return; |
833 |
if (head->read_eof) |
list_for_each_cookie(head->r.acl, &ccs_policy_list[CCS_ID_MANAGER]) { |
834 |
return 0; |
struct ccs_manager *ptr = |
835 |
list_for_each_cookie(pos, head->read_var2, &ccs_policy_manager_list) { |
list_entry(head->r.acl, typeof(*ptr), head.list); |
836 |
struct ccs_policy_manager_entry *ptr; |
if (ptr->head.is_deleted) |
|
ptr = list_entry(pos, struct ccs_policy_manager_entry, list); |
|
|
if (ptr->is_deleted) |
|
837 |
continue; |
continue; |
838 |
if (!ccs_io_printf(head, "%s\n", ptr->manager->name)) |
if (!ccs_flush(head)) |
839 |
return 0; |
return; |
840 |
|
ccs_set_string(head, ptr->manager->name); |
841 |
|
ccs_set_lf(head); |
842 |
} |
} |
843 |
head->read_eof = true; |
head->r.eof = true; |
|
return 0; |
|
844 |
} |
} |
845 |
|
|
846 |
/** |
/** |
847 |
* ccs_is_policy_manager - Check whether the current process is a policy manager. |
* ccs_manager - Check whether the current process is a policy manager. |
848 |
* |
* |
849 |
* Returns true if the current process is permitted to modify policy |
* Returns true if the current process is permitted to modify policy |
850 |
* via /proc/ccs/ interface. |
* via /proc/ccs/ interface. |
851 |
* |
* |
852 |
* Caller holds ccs_read_lock(). |
* Caller holds ccs_read_lock(). |
853 |
*/ |
*/ |
854 |
static bool ccs_is_policy_manager(void) |
static bool ccs_manager(void) |
855 |
{ |
{ |
856 |
struct ccs_policy_manager_entry *ptr; |
struct ccs_manager *ptr; |
857 |
const char *exe; |
const char *exe; |
858 |
struct task_struct *task = current; |
struct task_struct *task = current; |
859 |
const struct ccs_path_info *domainname |
const struct ccs_path_info *domainname |
860 |
= ccs_current_domain()->domainname; |
= ccs_current_domain()->domainname; |
861 |
bool found = false; |
bool found = false; |
|
ccs_check_read_lock(); |
|
862 |
if (!ccs_policy_loaded) |
if (!ccs_policy_loaded) |
863 |
return true; |
return true; |
864 |
if (task->ccs_flags & CCS_TASK_IS_POLICY_MANAGER) |
if (task->ccs_flags & CCS_TASK_IS_MANAGER) |
865 |
return true; |
return true; |
866 |
if (!ccs_manage_by_non_root && (current_uid() || current_euid())) |
if (!ccs_manage_by_non_root && (current_uid() || current_euid())) |
867 |
return false; |
return false; |
|
list_for_each_entry_rcu(ptr, &ccs_policy_manager_list, list) { |
|
|
if (!ptr->is_deleted && ptr->is_domain |
|
|
&& !ccs_pathcmp(domainname, ptr->manager)) { |
|
|
/* Set manager flag. */ |
|
|
task->ccs_flags |= CCS_TASK_IS_POLICY_MANAGER; |
|
|
return true; |
|
|
} |
|
|
} |
|
868 |
exe = ccs_get_exe(); |
exe = ccs_get_exe(); |
869 |
if (!exe) |
list_for_each_entry_rcu(ptr, &ccs_policy_list[CCS_ID_MANAGER], |
870 |
return false; |
head.list) { |
871 |
list_for_each_entry_rcu(ptr, &ccs_policy_manager_list, list) { |
if (ptr->head.is_deleted) |
872 |
if (!ptr->is_deleted && !ptr->is_domain |
continue; |
873 |
&& !strcmp(exe, ptr->manager->name)) { |
if (ptr->is_domain) { |
874 |
found = true; |
if (ccs_pathcmp(domainname, ptr->manager)) |
875 |
/* Set manager flag. */ |
continue; |
876 |
task->ccs_flags |= CCS_TASK_IS_POLICY_MANAGER; |
} else { |
877 |
break; |
if (!exe || strcmp(exe, ptr->manager->name)) |
878 |
|
continue; |
879 |
} |
} |
880 |
|
/* Set manager flag. */ |
881 |
|
task->ccs_flags |= CCS_TASK_IS_MANAGER; |
882 |
|
found = true; |
883 |
|
break; |
884 |
} |
} |
885 |
if (!found) { /* Reduce error messages. */ |
if (!found) { /* Reduce error messages. */ |
886 |
static pid_t ccs_last_pid; |
static pid_t ccs_last_pid; |
906 |
static char *ccs_find_condition_part(char *data) |
static char *ccs_find_condition_part(char *data) |
907 |
{ |
{ |
908 |
char *cp = strstr(data, " if "); |
char *cp = strstr(data, " if "); |
909 |
if (cp) { |
if (!cp) |
|
while (1) { |
|
|
char *cp2 = strstr(cp + 3, " if "); |
|
|
if (!cp2) |
|
|
break; |
|
|
cp = cp2; |
|
|
} |
|
|
*cp++ = '\0'; |
|
|
} else { |
|
910 |
cp = strstr(data, " ; set "); |
cp = strstr(data, " ; set "); |
911 |
if (cp) |
if (cp) |
912 |
*cp++ = '\0'; |
*cp++ = '\0'; |
|
} |
|
913 |
return cp; |
return cp; |
914 |
} |
} |
915 |
|
|
916 |
/** |
/** |
917 |
* ccs_is_select_one - Parse select command. |
* ccs_select_one - Parse select command. |
918 |
* |
* |
919 |
* @head: Pointer to "struct ccs_io_buffer". |
* @head: Pointer to "struct ccs_io_buffer". |
920 |
* @data: String to parse. |
* @data: String to parse. |
923 |
* |
* |
924 |
* Caller holds ccs_read_lock(). |
* Caller holds ccs_read_lock(). |
925 |
*/ |
*/ |
926 |
static bool ccs_is_select_one(struct ccs_io_buffer *head, const char *data) |
static bool ccs_select_one(struct ccs_io_buffer *head, const char *data) |
927 |
{ |
{ |
928 |
unsigned int pid; |
unsigned int pid; |
929 |
struct ccs_domain_info *domain = NULL; |
struct ccs_domain_info *domain = NULL; |
930 |
ccs_check_read_lock(); |
bool global_pid = false; |
931 |
if (!strcmp(data, "allow_execute")) { |
if (!strcmp(data, "allow_execute")) { |
932 |
head->read_execute_only = true; |
head->r.print_execute_only = true; |
933 |
return true; |
return true; |
934 |
} |
} |
935 |
if (sscanf(data, "pid=%u", &pid) == 1) { |
if (sscanf(data, "pid=%u", &pid) == 1 || |
936 |
|
(global_pid = true, sscanf(data, "global-pid=%u", &pid) == 1)) { |
937 |
struct task_struct *p; |
struct task_struct *p; |
938 |
/***** CRITICAL SECTION START *****/ |
ccs_tasklist_lock(); |
939 |
read_lock(&tasklist_lock); |
#if LINUX_VERSION_CODE >= KERNEL_VERSION(2, 6, 24) |
940 |
|
if (global_pid) |
941 |
|
p = ccsecurity_exports.find_task_by_pid_ns(pid, |
942 |
|
&init_pid_ns); |
943 |
|
else |
944 |
|
p = ccsecurity_exports.find_task_by_vpid(pid); |
945 |
|
#else |
946 |
p = find_task_by_pid(pid); |
p = find_task_by_pid(pid); |
947 |
|
#endif |
948 |
if (p) |
if (p) |
949 |
domain = ccs_task_domain(p); |
domain = ccs_task_domain(p); |
950 |
read_unlock(&tasklist_lock); |
ccs_tasklist_unlock(); |
|
/***** CRITICAL SECTION END *****/ |
|
951 |
} else if (!strncmp(data, "domain=", 7)) { |
} else if (!strncmp(data, "domain=", 7)) { |
952 |
if (ccs_is_domain_def(data + 7)) |
if (ccs_domain_def(data + 7)) |
953 |
domain = ccs_find_domain(data + 7); |
domain = ccs_find_domain(data + 7); |
954 |
} else |
} else |
955 |
return false; |
return false; |
956 |
head->write_var1 = domain; |
head->w.domain = domain; |
957 |
/* Accessing read_buf is safe because head->io_sem is held. */ |
/* Accessing read_buf is safe because head->io_sem is held. */ |
958 |
if (!head->read_buf) |
if (!head->read_buf) |
959 |
return true; /* Do nothing if open(O_WRONLY). */ |
return true; /* Do nothing if open(O_WRONLY). */ |
960 |
head->read_avail = 0; |
memset(&head->r, 0, sizeof(head->r)); |
961 |
|
head->r.print_this_domain_only = true; |
962 |
|
head->r.eof = !domain; |
963 |
|
head->r.domain = &domain->list; |
964 |
ccs_io_printf(head, "# select %s\n", data); |
ccs_io_printf(head, "# select %s\n", data); |
965 |
head->read_single_domain = true; |
if (domain && domain->is_deleted) |
966 |
head->read_eof = !domain; |
ccs_set_string(head, "# This is a deleted domain.\n"); |
|
if (domain) { |
|
|
struct ccs_domain_info *d; |
|
|
head->read_var1 = NULL; |
|
|
list_for_each_entry_rcu(d, &ccs_domain_list, list) { |
|
|
if (d == domain) |
|
|
break; |
|
|
head->read_var1 = &d->list; |
|
|
} |
|
|
head->read_var2 = NULL; |
|
|
head->read_bit = 0; |
|
|
head->read_step = 0; |
|
|
if (domain->is_deleted) |
|
|
ccs_io_printf(head, "# This is a deleted domain.\n"); |
|
|
} |
|
967 |
return true; |
return true; |
968 |
} |
} |
969 |
|
|
970 |
|
static int ccs_write_domain2(char *data, struct ccs_domain_info *domain, |
971 |
|
const bool is_delete) |
972 |
|
{ |
973 |
|
static const struct { |
974 |
|
const char *keyword; |
975 |
|
int (*write) (char *, struct ccs_domain_info *, |
976 |
|
struct ccs_condition *, const bool); |
977 |
|
} ccs_callback[5] = { |
978 |
|
{ CCS_KEYWORD_ALLOW_NETWORK, ccs_write_network }, |
979 |
|
{ CCS_KEYWORD_ALLOW_ENV, ccs_write_env }, |
980 |
|
{ CCS_KEYWORD_ALLOW_CAPABILITY, ccs_write_capability }, |
981 |
|
{ CCS_KEYWORD_ALLOW_SIGNAL, ccs_write_signal }, |
982 |
|
{ CCS_KEYWORD_ALLOW_MOUNT, ccs_write_mount } |
983 |
|
}; |
984 |
|
int (*write) (char *, struct ccs_domain_info *, struct ccs_condition *, |
985 |
|
const bool) = ccs_write_file; |
986 |
|
int error; |
987 |
|
u8 i; |
988 |
|
struct ccs_condition *cond = NULL; |
989 |
|
char *cp = ccs_find_condition_part(data); |
990 |
|
if (cp) { |
991 |
|
cond = ccs_get_condition(cp); |
992 |
|
if (!cond) |
993 |
|
return -EINVAL; |
994 |
|
} |
995 |
|
for (i = 0; i < 5; i++) { |
996 |
|
if (!ccs_str_starts(&data, ccs_callback[i].keyword)) |
997 |
|
continue; |
998 |
|
write = ccs_callback[i].write; |
999 |
|
break; |
1000 |
|
} |
1001 |
|
error = write(data, domain, cond, is_delete); |
1002 |
|
if (cond) |
1003 |
|
ccs_put_condition(cond); |
1004 |
|
return error; |
1005 |
|
} |
1006 |
|
|
1007 |
|
static const char *ccs_dif[CCS_MAX_DOMAIN_INFO_FLAGS] = { |
1008 |
|
[CCS_DIF_QUOTA_WARNED] = CCS_KEYWORD_QUOTA_EXCEEDED "\n", |
1009 |
|
[CCS_DIF_IGNORE_GLOBAL] = CCS_KEYWORD_IGNORE_GLOBAL "\n", |
1010 |
|
[CCS_DIF_IGNORE_GLOBAL_ALLOW_READ] |
1011 |
|
= CCS_KEYWORD_IGNORE_GLOBAL_ALLOW_READ "\n", |
1012 |
|
[CCS_DIF_IGNORE_GLOBAL_ALLOW_ENV] |
1013 |
|
= CCS_KEYWORD_IGNORE_GLOBAL_ALLOW_ENV "\n", |
1014 |
|
[CCS_DIF_TRANSITION_FAILED] = CCS_KEYWORD_TRANSITION_FAILED "\n" |
1015 |
|
}; |
1016 |
|
|
1017 |
/** |
/** |
1018 |
* ccs_write_domain_policy - Write domain policy. |
* ccs_write_domain - Write domain policy. |
1019 |
* |
* |
1020 |
* @head: Pointer to "struct ccs_io_buffer". |
* @head: Pointer to "struct ccs_io_buffer". |
1021 |
* |
* |
1022 |
* Returns 0 on success, negative value otherwise. |
* Returns 0 on success, negative value otherwise. |
1023 |
*/ |
*/ |
1024 |
static int ccs_write_domain_policy(struct ccs_io_buffer *head) |
static int ccs_write_domain(struct ccs_io_buffer *head) |
1025 |
{ |
{ |
1026 |
char *data = head->write_buf; |
char *data = head->write_buf; |
1027 |
struct ccs_domain_info *domain = head->write_var1; |
struct ccs_domain_info *domain = head->w.domain; |
1028 |
bool is_delete = false; |
bool is_delete = false; |
1029 |
bool is_select = false; |
bool is_select = false; |
1030 |
unsigned int profile; |
unsigned int profile; |
1031 |
struct ccs_condition *cond = NULL; |
if (ccs_str_starts(&data, CCS_KEYWORD_DELETE)) |
|
char *cp; |
|
|
int error; |
|
|
if (ccs_str_starts(&data, KEYWORD_DELETE)) |
|
1032 |
is_delete = true; |
is_delete = true; |
1033 |
else if (ccs_str_starts(&data, KEYWORD_SELECT)) |
else if (ccs_str_starts(&data, CCS_KEYWORD_SELECT)) |
1034 |
is_select = true; |
is_select = true; |
1035 |
if (is_select && ccs_is_select_one(head, data)) |
if (is_select && ccs_select_one(head, data)) |
1036 |
return 0; |
return 0; |
1037 |
/* Don't allow updating policies by non manager programs. */ |
/* Don't allow updating policies by non manager programs. */ |
1038 |
if (!ccs_is_policy_manager()) |
if (!ccs_manager()) |
1039 |
return -EPERM; |
return -EPERM; |
1040 |
if (ccs_is_domain_def(data)) { |
if (ccs_domain_def(data)) { |
1041 |
domain = NULL; |
domain = NULL; |
1042 |
if (is_delete) |
if (is_delete) |
1043 |
ccs_delete_domain(data); |
ccs_delete_domain(data); |
1044 |
else if (is_select) |
else if (is_select) |
1045 |
domain = ccs_find_domain(data); |
domain = ccs_find_domain(data); |
1046 |
else |
else |
1047 |
domain = ccs_find_or_assign_new_domain(data, 0); |
domain = ccs_assign_domain(data, 0); |
1048 |
head->write_var1 = domain; |
head->w.domain = domain; |
1049 |
return 0; |
return 0; |
1050 |
} |
} |
1051 |
if (!domain) |
if (!domain) |
1052 |
return -EINVAL; |
return -EINVAL; |
1053 |
|
|
1054 |
if (sscanf(data, KEYWORD_USE_PROFILE "%u", &profile) == 1 |
if (sscanf(data, CCS_KEYWORD_USE_PROFILE "%u", &profile) == 1 |
1055 |
&& profile < MAX_PROFILES) { |
&& profile < CCS_MAX_PROFILES) { |
1056 |
if (ccs_profile_ptr[profile] || !ccs_policy_loaded) |
if (!ccs_policy_loaded || ccs_profile_ptr[(u8) profile]) |
1057 |
domain->profile = (u8) profile; |
domain->profile = (u8) profile; |
1058 |
return 0; |
return 0; |
1059 |
} |
} |
1060 |
if (!strcmp(data, KEYWORD_IGNORE_GLOBAL_ALLOW_READ)) { |
for (profile = 0; profile < CCS_MAX_DOMAIN_INFO_FLAGS; profile++) { |
1061 |
domain->ignore_global_allow_read = !is_delete; |
const char *cp = ccs_dif[profile]; |
1062 |
return 0; |
if (strncmp(data, cp, strlen(cp) - 1)) |
|
} |
|
|
if (!strcmp(data, KEYWORD_IGNORE_GLOBAL_ALLOW_ENV)) { |
|
|
domain->ignore_global_allow_env = !is_delete; |
|
|
return 0; |
|
|
} |
|
|
cp = ccs_find_condition_part(data); |
|
|
if (cp) { |
|
|
cond = ccs_get_condition(cp); |
|
|
if (!cond) |
|
|
return -EINVAL; |
|
|
} |
|
|
if (ccs_str_starts(&data, KEYWORD_ALLOW_CAPABILITY)) |
|
|
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_IOCTL)) |
|
|
error = ccs_write_ioctl_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); |
|
|
if (cond) |
|
|
ccs_put_condition(cond); |
|
|
return error; |
|
|
} |
|
|
|
|
|
static bool ccs_print_name_union(struct ccs_io_buffer *head, bool is_group, |
|
|
union ccs_name_union *group) |
|
|
{ |
|
|
const int pos = head->read_avail; |
|
|
if (pos && head->read_buf[pos - 1] == ' ') |
|
|
head->read_avail--; |
|
|
if (is_group) |
|
|
return ccs_io_printf(head, " @%s", group->group->group_name->name); |
|
|
return ccs_io_printf(head, " %s", group->filename->name); |
|
|
} |
|
|
|
|
|
static bool ccs_print_number_union(struct ccs_io_buffer *head, bool is_group, |
|
|
union ccs_number_union *group) |
|
|
{ |
|
|
unsigned int min; |
|
|
unsigned int max; |
|
|
if (is_group) |
|
|
return ccs_io_printf(head, " @%s", group->group->group_name->name); |
|
|
min = group->value.min; |
|
|
max = group->value.max; |
|
|
if (min == max) |
|
|
return ccs_io_printf(head, " %u", min); |
|
|
return ccs_io_printf(head, " %u-%u", min, max); |
|
|
} |
|
|
|
|
|
/** |
|
|
* ccs_print_single_path_acl - Print a single path ACL entry. |
|
|
* |
|
|
* @head: Pointer to "struct ccs_io_buffer". |
|
|
* @ptr: Pointer to "struct ccs_single_path_acl_record". |
|
|
* @cond: Pointer to "struct ccs_condition". May be NULL. |
|
|
* |
|
|
* Returns true on success, false otherwise. |
|
|
*/ |
|
|
static bool ccs_print_single_path_acl(struct ccs_io_buffer *head, |
|
|
struct ccs_single_path_acl_record *ptr, |
|
|
const struct ccs_condition *cond) |
|
|
{ |
|
|
int pos; |
|
|
u8 bit; |
|
|
const u16 perm = ptr->perm; |
|
|
for (bit = head->read_bit; bit < MAX_SINGLE_PATH_OPERATION; bit++) { |
|
|
const char *msg; |
|
|
if (!(perm & (1 << bit))) |
|
|
continue; |
|
|
if (head->read_execute_only && bit != TYPE_EXECUTE_ACL) |
|
|
continue; |
|
|
/* Print "read/write" instead of "read" and "write". */ |
|
|
if ((bit == TYPE_READ_ACL || bit == TYPE_WRITE_ACL) |
|
|
&& (perm & (1 << TYPE_READ_WRITE_ACL))) |
|
1063 |
continue; |
continue; |
1064 |
msg = ccs_sp2keyword(bit); |
domain->flags[profile] = !is_delete; |
1065 |
pos = head->read_avail; |
return 0; |
|
if (!ccs_io_printf(head, "allow_%s", msg) || |
|
|
!ccs_print_name_union(head, ptr->name_is_group, |
|
|
&ptr->name) || |
|
|
!ccs_print_condition(head, cond)) |
|
|
goto out; |
|
1066 |
} |
} |
1067 |
head->read_bit = 0; |
return ccs_write_domain2(data, domain, is_delete); |
|
return true; |
|
|
out: |
|
|
head->read_bit = bit; |
|
|
head->read_avail = pos; |
|
|
return false; |
|
1068 |
} |
} |
1069 |
|
|
1070 |
/** |
/** |
1071 |
* ccs_print_mkdev_acl - Print a mkdev ACL entry. |
* ccs_print_name_union - Print a ccs_name_union. |
1072 |
* |
* |
1073 |
* @head: Pointer to "struct ccs_io_buffer". |
* @head: Pointer to "struct ccs_io_buffer". |
1074 |
* @ptr: Pointer to "struct ccs_mkdev_acl_record". |
* @ptr: Pointer to "struct ccs_name_union". |
|
* @cond: Pointer to "struct ccs_condition". May be NULL. |
|
|
* |
|
|
* Returns true on success, false otherwise. |
|
1075 |
*/ |
*/ |
1076 |
static bool ccs_print_mkdev_acl(struct ccs_io_buffer *head, |
static void ccs_print_name_union(struct ccs_io_buffer *head, |
1077 |
struct ccs_mkdev_acl_record *ptr, |
const struct ccs_name_union *ptr) |
|
const struct ccs_condition *cond) |
|
1078 |
{ |
{ |
1079 |
int pos; |
const bool cond = head->r.print_cond_part; |
1080 |
u8 bit; |
if (!cond) |
1081 |
const u16 perm = ptr->perm; |
ccs_set_space(head); |
1082 |
for (bit = head->read_bit; bit < MAX_MKDEV_OPERATION; bit++) { |
if (ptr->is_group) { |
1083 |
const char *msg; |
ccs_set_string(head, "@"); |
1084 |
if (!(perm & (1 << bit))) |
ccs_set_string(head, ptr->group->group_name->name); |
1085 |
continue; |
} else { |
1086 |
msg = ccs_mkdev2keyword(bit); |
if (cond) |
1087 |
pos = head->read_avail; |
ccs_set_string(head, "\""); |
1088 |
if (!ccs_io_printf(head, "allow_%s", msg) || |
ccs_set_string(head, ptr->filename->name); |
1089 |
!ccs_print_name_union(head, ptr->name_is_group, |
if (cond) |
1090 |
&ptr->name) || |
ccs_set_string(head, "\""); |
|
!ccs_print_number_union(head, ptr->major_is_group, |
|
|
&ptr->major) || |
|
|
!ccs_print_number_union(head, ptr->minor_is_group, |
|
|
&ptr->minor) || |
|
|
!ccs_print_condition(head, cond)) |
|
|
goto out; |
|
1091 |
} |
} |
|
head->read_bit = 0; |
|
|
return true; |
|
|
out: |
|
|
head->read_bit = bit; |
|
|
head->read_avail = pos; |
|
|
return false; |
|
1092 |
} |
} |
1093 |
|
|
1094 |
/** |
/** |
1095 |
* ccs_print_double_path_acl - Print a double path ACL entry. |
* ccs_print_number_union - Print a ccs_number_union. |
1096 |
* |
* |
1097 |
* @head: Pointer to "struct ccs_io_buffer". |
* @head: Pointer to "struct ccs_io_buffer". |
1098 |
* @ptr: Pointer to "struct ccs_double_path_acl_record". |
* @ptr: Pointer to "struct ccs_number_union". |
|
* @cond: Pointer to "struct ccs_condition". May be NULL. |
|
|
* |
|
|
* Returns true on success, false otherwise. |
|
1099 |
*/ |
*/ |
1100 |
static bool ccs_print_double_path_acl(struct ccs_io_buffer *head, |
static void ccs_print_number_union(struct ccs_io_buffer *head, |
1101 |
struct ccs_double_path_acl_record *ptr, |
const struct ccs_number_union *ptr) |
|
const struct ccs_condition *cond) |
|
1102 |
{ |
{ |
1103 |
int pos; |
if (!head->r.print_cond_part) |
1104 |
u8 bit; |
ccs_set_space(head); |
1105 |
const u8 perm = ptr->perm; |
if (ptr->is_group) { |
1106 |
for (bit = head->read_bit; bit < MAX_DOUBLE_PATH_OPERATION; bit++) { |
ccs_set_string(head, "@"); |
1107 |
const char *msg; |
ccs_set_string(head, ptr->group->group_name->name); |
1108 |
if (!(perm & (1 << bit))) |
} else { |
1109 |
continue; |
int i; |
1110 |
msg = ccs_dp2keyword(bit); |
unsigned long min = ptr->values[0]; |
1111 |
pos = head->read_avail; |
const unsigned long max = ptr->values[1]; |
1112 |
if (!ccs_io_printf(head, "allow_%s", msg) || |
u8 min_type = ptr->value_type[0]; |
1113 |
!ccs_print_name_union(head, ptr->name1_is_group, |
const u8 max_type = ptr->value_type[1]; |
1114 |
&ptr->name1) || |
char buffer[128]; |
1115 |
!ccs_print_name_union(head, ptr->name2_is_group, |
buffer[0] = '\0'; |
1116 |
&ptr->name2) || |
for (i = 0; i < 2; i++) { |
1117 |
!ccs_print_condition(head, cond)) |
switch (min_type) { |
1118 |
goto out; |
case CCS_VALUE_TYPE_HEXADECIMAL: |
1119 |
|
ccs_addprintf(buffer, sizeof(buffer), "0x%lX", |
1120 |
|
min); |
1121 |
|
break; |
1122 |
|
case CCS_VALUE_TYPE_OCTAL: |
1123 |
|
ccs_addprintf(buffer, sizeof(buffer), "0%lo", |
1124 |
|
min); |
1125 |
|
break; |
1126 |
|
default: |
1127 |
|
ccs_addprintf(buffer, sizeof(buffer), "%lu", |
1128 |
|
min); |
1129 |
|
break; |
1130 |
|
} |
1131 |
|
if (min == max && min_type == max_type) |
1132 |
|
break; |
1133 |
|
ccs_addprintf(buffer, sizeof(buffer), "-"); |
1134 |
|
min_type = max_type; |
1135 |
|
min = max; |
1136 |
|
} |
1137 |
|
ccs_io_printf(head, "%s", buffer); |
1138 |
} |
} |
|
head->read_bit = 0; |
|
|
return true; |
|
|
out: |
|
|
head->read_bit = bit; |
|
|
head->read_avail = pos; |
|
|
return false; |
|
1139 |
} |
} |
1140 |
|
|
1141 |
/** |
/** |
1142 |
* ccs_print_ioctl_acl - Print an ioctl ACL entry. |
* ccs_print_condition - Print condition part. |
1143 |
* |
* |
1144 |
* @head: Pointer to "struct ccs_io_buffer". |
* @head: Pointer to "struct ccs_io_buffer". |
1145 |
* @ptr: Pointer to "struct ccs_ioctl_acl_record". |
* @cond: Pointer to "struct ccs_condition". |
|
* @cond: Pointer to "struct ccs_condition". May be NULL. |
|
1146 |
* |
* |
1147 |
* Returns true on success, false otherwise. |
* Returns true on success, false otherwise. |
1148 |
*/ |
*/ |
1149 |
static bool ccs_print_ioctl_acl(struct ccs_io_buffer *head, |
static bool ccs_print_condition(struct ccs_io_buffer *head, |
|
struct ccs_ioctl_acl_record *ptr, |
|
1150 |
const struct ccs_condition *cond) |
const struct ccs_condition *cond) |
1151 |
{ |
{ |
1152 |
int pos = head->read_avail; |
switch (head->r.cond_step) { |
1153 |
if (!ccs_io_printf(head, KEYWORD_ALLOW_IOCTL) || |
case 0: |
1154 |
!ccs_print_name_union(head, ptr->name_is_group, &ptr->name) || |
{ |
1155 |
!ccs_print_number_union(head, ptr->cmd_is_group, &ptr->cmd) || |
if (cond->condc) |
1156 |
!ccs_print_condition(head, cond)) |
ccs_set_string(head, " if"); |
1157 |
goto out; |
head->r.cond_index = 0; |
1158 |
return true; |
head->r.cond_step++; |
1159 |
out: |
} |
1160 |
head->read_avail = pos; |
/* fall through */ |
1161 |
return false; |
case 1: |
1162 |
} |
{ |
1163 |
|
const u16 condc = cond->condc; |
1164 |
/** |
const struct ccs_condition_element *condp = |
1165 |
* ccs_print_argv0_acl - Print an argv[0] ACL entry. |
(typeof(condp)) (cond + 1); |
1166 |
* |
const struct ccs_number_union *numbers_p = |
1167 |
* @head: Pointer to "struct ccs_io_buffer". |
(typeof(numbers_p)) (condp + condc); |
1168 |
* @ptr: Pointer to "struct ccs_argv0_acl_record". |
const struct ccs_name_union *names_p = |
1169 |
* @cond: Pointer to "struct ccs_condition". May be NULL. |
(typeof(names_p)) |
1170 |
* |
(numbers_p + cond->numbers_count); |
1171 |
* Returns true on success, false otherwise. |
const struct ccs_argv *argv = |
1172 |
*/ |
(typeof(argv)) (names_p + cond->names_count); |
1173 |
static bool ccs_print_argv0_acl(struct ccs_io_buffer *head, |
const struct ccs_envp *envp = |
1174 |
struct ccs_argv0_acl_record *ptr, |
(typeof(envp)) (argv + cond->argc); |
1175 |
const struct ccs_condition *cond) |
u16 skip; |
1176 |
{ |
for (skip = 0; skip < head->r.cond_index; skip++) { |
1177 |
int pos = head->read_avail; |
const u8 left = condp->left; |
1178 |
if (!ccs_io_printf(head, KEYWORD_ALLOW_ARGV0 "%s %s", |
const u8 right = condp->right; |
1179 |
ptr->filename->name, ptr->argv0->name)) |
condp++; |
1180 |
goto out; |
switch (left) { |
1181 |
if (!ccs_print_condition(head, cond)) |
case CCS_ARGV_ENTRY: |
1182 |
goto out; |
argv++; |
1183 |
return true; |
continue; |
1184 |
out: |
case CCS_ENVP_ENTRY: |
1185 |
head->read_avail = pos; |
envp++; |
1186 |
return false; |
continue; |
1187 |
} |
case CCS_NUMBER_UNION: |
1188 |
|
numbers_p++; |
1189 |
/** |
break; |
1190 |
* ccs_print_env_acl - Print an evironment variable name's ACL entry. |
} |
1191 |
* |
switch (right) { |
1192 |
* @head: Pointer to "struct ccs_io_buffer". |
case CCS_NAME_UNION: |
1193 |
* @ptr: Pointer to "struct ccs_env_acl_record". |
names_p++; |
1194 |
* @cond: Pointer to "struct ccs_condition". May be NULL. |
break; |
1195 |
* |
case CCS_NUMBER_UNION: |
1196 |
* Returns true on success, false otherwise. |
numbers_p++; |
1197 |
*/ |
break; |
1198 |
static bool ccs_print_env_acl(struct ccs_io_buffer *head, |
} |
1199 |
struct ccs_env_acl_record *ptr, |
} |
1200 |
const struct ccs_condition *cond) |
while (head->r.cond_index < condc) { |
1201 |
{ |
const u8 match = condp->equals; |
1202 |
int pos = head->read_avail; |
const u8 left = condp->left; |
1203 |
if (!ccs_io_printf(head, KEYWORD_ALLOW_ENV "%s", ptr->env->name)) |
const u8 right = condp->right; |
1204 |
goto out; |
if (!ccs_flush(head)) |
1205 |
if (!ccs_print_condition(head, cond)) |
return false; |
1206 |
goto out; |
condp++; |
1207 |
return true; |
head->r.cond_index++; |
1208 |
out: |
ccs_set_space(head); |
1209 |
head->read_avail = pos; |
switch (left) { |
1210 |
return false; |
case CCS_ARGV_ENTRY: |
1211 |
} |
ccs_io_printf(head, |
1212 |
|
"exec.argv[%u]%s\"%s\"", |
1213 |
/** |
argv->index, |
1214 |
* ccs_print_capability_acl - Print a capability ACL entry. |
argv->is_not ? |
1215 |
* |
"!=" : "=", |
1216 |
* @head: Pointer to "struct ccs_io_buffer". |
argv->value->name); |
1217 |
* @ptr: Pointer to "struct ccs_capability_acl_record". |
argv++; |
1218 |
* @cond: Pointer to "struct ccs_condition". May be NULL. |
continue; |
1219 |
* |
case CCS_ENVP_ENTRY: |
1220 |
* Returns true on success, false otherwise. |
ccs_io_printf(head, |
1221 |
*/ |
"exec.envp[\"%s\"]%s", |
1222 |
static bool ccs_print_capability_acl(struct ccs_io_buffer *head, |
envp->name->name, |
1223 |
struct ccs_capability_acl_record *ptr, |
envp->is_not ? |
1224 |
const struct ccs_condition *cond) |
"!=" : "="); |
1225 |
{ |
if (envp->value) { |
1226 |
int pos = head->read_avail; |
ccs_set_string(head, "\""); |
1227 |
if (!ccs_io_printf(head, KEYWORD_ALLOW_CAPABILITY "%s", |
ccs_set_string(head, envp-> |
1228 |
ccs_cap2keyword(ptr->operation))) |
value->name); |
1229 |
goto out; |
ccs_set_string(head, "\""); |
1230 |
if (!ccs_print_condition(head, cond)) |
} else { |
1231 |
goto out; |
ccs_set_string(head, "NULL"); |
1232 |
return true; |
} |
1233 |
out: |
envp++; |
1234 |
head->read_avail = pos; |
continue; |
1235 |
|
case CCS_NUMBER_UNION: |
1236 |
|
ccs_print_number_union(head, |
1237 |
|
numbers_p++); |
1238 |
|
break; |
1239 |
|
default: |
1240 |
|
ccs_set_string(head, |
1241 |
|
ccs_condition_keyword[left]); |
1242 |
|
break; |
1243 |
|
} |
1244 |
|
ccs_set_string(head, match ? "=" : "!="); |
1245 |
|
switch (right) { |
1246 |
|
case CCS_NAME_UNION: |
1247 |
|
ccs_print_name_union(head, names_p++); |
1248 |
|
break; |
1249 |
|
case CCS_NUMBER_UNION: |
1250 |
|
ccs_print_number_union(head, |
1251 |
|
numbers_p++); |
1252 |
|
break; |
1253 |
|
default: |
1254 |
|
ccs_set_string(head, |
1255 |
|
ccs_condition_keyword[right]); |
1256 |
|
break; |
1257 |
|
} |
1258 |
|
} |
1259 |
|
} |
1260 |
|
head->r.cond_step++; |
1261 |
|
/* fall through */ |
1262 |
|
case 2: |
1263 |
|
if (!ccs_flush(head)) |
1264 |
|
break; |
1265 |
|
head->r.cond_step++; |
1266 |
|
/* fall through */ |
1267 |
|
case 3: |
1268 |
|
{ |
1269 |
|
u8 j; |
1270 |
|
const u8 i = cond->post_state[3]; |
1271 |
|
if (i) |
1272 |
|
ccs_set_string(head, " ; set"); |
1273 |
|
for (j = 0; j < 3; j++) |
1274 |
|
if ((i & (1 << j))) |
1275 |
|
ccs_io_printf(head, |
1276 |
|
" task.state[%u]=%u", j, |
1277 |
|
cond->post_state[j]); |
1278 |
|
if (i & (1 << 4)) |
1279 |
|
ccs_io_printf(head, " audit=%s", |
1280 |
|
ccs_yesno(cond->post_state[4])); |
1281 |
|
} |
1282 |
|
ccs_set_lf(head); |
1283 |
|
return true; |
1284 |
|
} |
1285 |
return false; |
return false; |
1286 |
} |
} |
1287 |
|
|
1288 |
/** |
/** |
1289 |
* ccs_print_ipv4_entry - Print IPv4 address of a network ACL entry. |
* ccs_fns - Find next set bit. |
1290 |
* |
* |
1291 |
* @head: Pointer to "struct ccs_io_buffer". |
* @perm: 8 bits value. |
1292 |
* @ptr: Pointer to "struct ccs_ip_network_acl_record". |
* @bit: First bit to find. |
1293 |
* |
* |
1294 |
* Returns true on success, false otherwise. |
* Returns next set bit on success, 8 otherwise. |
1295 |
*/ |
*/ |
1296 |
static bool ccs_print_ipv4_entry(struct ccs_io_buffer *head, |
static u8 ccs_fns(const u8 perm, u8 bit) |
|
struct ccs_ip_network_acl_record *ptr) |
|
1297 |
{ |
{ |
1298 |
const u32 min_address = ptr->address.ipv4.min; |
for ( ; bit < 8; bit++) |
1299 |
const u32 max_address = ptr->address.ipv4.max; |
if (perm & (1 << bit)) |
1300 |
if (!ccs_io_printf(head, "%u.%u.%u.%u", HIPQUAD(min_address))) |
break; |
1301 |
return false; |
return bit; |
|
if (min_address != max_address |
|
|
&& !ccs_io_printf(head, "-%u.%u.%u.%u", HIPQUAD(max_address))) |
|
|
return false; |
|
|
return true; |
|
1302 |
} |
} |
1303 |
|
|
1304 |
/** |
/** |
1305 |
* ccs_print_ipv6_entry - Print IPv6 address of a network ACL entry. |
* ccs_print_entry - Print an ACL entry. |
1306 |
* |
* |
1307 |
* @head: Pointer to "struct ccs_io_buffer". |
* @head: Pointer to "struct ccs_io_buffer". |
1308 |
* @ptr: Pointer to "struct ccs_ip_network_acl_record". |
* @acl: Pointer to an ACL entry. |
1309 |
* |
* |
1310 |
* Returns true on success, false otherwise. |
* Returns true on success, false otherwise. |
1311 |
*/ |
*/ |
1312 |
static bool ccs_print_ipv6_entry(struct ccs_io_buffer *head, |
static bool ccs_print_entry(struct ccs_io_buffer *head, |
1313 |
struct ccs_ip_network_acl_record *ptr) |
const struct ccs_acl_info *acl) |
1314 |
{ |
{ |
1315 |
char buf[64]; |
const u8 acl_type = acl->type; |
1316 |
const struct in6_addr *min_address = ptr->address.ipv6.min; |
u8 bit; |
1317 |
const struct in6_addr *max_address = ptr->address.ipv6.max; |
if (head->r.print_cond_part) |
1318 |
ccs_print_ipv6(buf, sizeof(buf), min_address); |
goto print_cond_part; |
1319 |
if (!ccs_io_printf(head, "%s", buf)) |
if (acl->is_deleted) |
1320 |
|
return true; |
1321 |
|
next: |
1322 |
|
bit = head->r.bit; |
1323 |
|
if (!ccs_flush(head)) |
1324 |
return false; |
return false; |
1325 |
if (min_address != max_address) { |
else if (acl_type == CCS_TYPE_PATH_ACL) { |
1326 |
ccs_print_ipv6(buf, sizeof(buf), max_address); |
struct ccs_path_acl *ptr |
1327 |
if (!ccs_io_printf(head, "-%s", buf)) |
= container_of(acl, typeof(*ptr), head); |
1328 |
|
const u16 perm = ptr->perm; |
1329 |
|
for ( ; bit < CCS_MAX_PATH_OPERATION; bit++) { |
1330 |
|
if (!(perm & (1 << bit))) |
1331 |
|
continue; |
1332 |
|
if (head->r.print_execute_only && |
1333 |
|
bit != CCS_TYPE_EXECUTE && bit != CCS_TYPE_TRANSIT) |
1334 |
|
continue; |
1335 |
|
/* Print "read/write" instead of "read" and "write". */ |
1336 |
|
if ((bit == CCS_TYPE_READ || bit == CCS_TYPE_WRITE) |
1337 |
|
&& (perm & (1 << CCS_TYPE_READ_WRITE))) |
1338 |
|
continue; |
1339 |
|
break; |
1340 |
|
} |
1341 |
|
if (bit >= CCS_MAX_PATH_OPERATION) |
1342 |
|
goto done; |
1343 |
|
ccs_io_printf(head, "allow_%s", ccs_path_keyword[bit]); |
1344 |
|
ccs_print_name_union(head, &ptr->name); |
1345 |
|
} else if (acl_type == CCS_TYPE_EXECUTE_HANDLER || |
1346 |
|
acl_type == CCS_TYPE_DENIED_EXECUTE_HANDLER) { |
1347 |
|
struct ccs_execute_handler *ptr |
1348 |
|
= container_of(acl, typeof(*ptr), head); |
1349 |
|
ccs_io_printf(head, "%s ", |
1350 |
|
acl_type == CCS_TYPE_EXECUTE_HANDLER ? |
1351 |
|
CCS_KEYWORD_EXECUTE_HANDLER : |
1352 |
|
CCS_KEYWORD_DENIED_EXECUTE_HANDLER); |
1353 |
|
ccs_set_string(head, ptr->handler->name); |
1354 |
|
} else if (head->r.print_execute_only) { |
1355 |
|
return true; |
1356 |
|
} else if (acl_type == CCS_TYPE_MKDEV_ACL) { |
1357 |
|
struct ccs_mkdev_acl *ptr = |
1358 |
|
container_of(acl, typeof(*ptr), head); |
1359 |
|
bit = ccs_fns(ptr->perm, bit); |
1360 |
|
if (bit >= CCS_MAX_MKDEV_OPERATION) |
1361 |
|
goto done; |
1362 |
|
ccs_io_printf(head, "allow_%s", ccs_mkdev_keyword[bit]); |
1363 |
|
ccs_print_name_union(head, &ptr->name); |
1364 |
|
ccs_print_number_union(head, &ptr->mode); |
1365 |
|
ccs_print_number_union(head, &ptr->major); |
1366 |
|
ccs_print_number_union(head, &ptr->minor); |
1367 |
|
} else if (acl_type == CCS_TYPE_PATH2_ACL) { |
1368 |
|
struct ccs_path2_acl *ptr = |
1369 |
|
container_of(acl, typeof(*ptr), head); |
1370 |
|
bit = ccs_fns(ptr->perm, bit); |
1371 |
|
if (bit >= CCS_MAX_PATH2_OPERATION) |
1372 |
|
goto done; |
1373 |
|
ccs_io_printf(head, "allow_%s", ccs_path2_keyword[bit]); |
1374 |
|
ccs_print_name_union(head, &ptr->name1); |
1375 |
|
ccs_print_name_union(head, &ptr->name2); |
1376 |
|
} else if (acl_type == CCS_TYPE_PATH_NUMBER_ACL) { |
1377 |
|
struct ccs_path_number_acl *ptr = |
1378 |
|
container_of(acl, typeof(*ptr), head); |
1379 |
|
bit = ccs_fns(ptr->perm, bit); |
1380 |
|
if (bit >= CCS_MAX_PATH_NUMBER_OPERATION) |
1381 |
|
goto done; |
1382 |
|
ccs_io_printf(head, "allow_%s", |
1383 |
|
ccs_path_number_keyword[bit]); |
1384 |
|
ccs_print_name_union(head, &ptr->name); |
1385 |
|
ccs_print_number_union(head, &ptr->number); |
1386 |
|
} else if (acl_type == CCS_TYPE_ENV_ACL) { |
1387 |
|
struct ccs_env_acl *ptr = |
1388 |
|
container_of(acl, typeof(*ptr), head); |
1389 |
|
ccs_set_string(head, CCS_KEYWORD_ALLOW_ENV); |
1390 |
|
ccs_set_string(head, ptr->env->name); |
1391 |
|
} else if (acl_type == CCS_TYPE_CAPABILITY_ACL) { |
1392 |
|
struct ccs_capability_acl *ptr = |
1393 |
|
container_of(acl, typeof(*ptr), head); |
1394 |
|
ccs_set_string(head, CCS_KEYWORD_ALLOW_CAPABILITY); |
1395 |
|
ccs_set_string(head, ccs_cap2keyword(ptr->operation)); |
1396 |
|
} else if (acl_type == CCS_TYPE_IP_NETWORK_ACL) { |
1397 |
|
struct ccs_ip_network_acl *ptr = |
1398 |
|
container_of(acl, typeof(*ptr), head); |
1399 |
|
bit = ccs_fns(ptr->perm, bit); |
1400 |
|
if (bit >= CCS_MAX_NETWORK_OPERATION) |
1401 |
|
goto done; |
1402 |
|
ccs_io_printf(head, CCS_KEYWORD_ALLOW_NETWORK "%s ", |
1403 |
|
ccs_net_keyword[bit]); |
1404 |
|
switch (ptr->address_type) { |
1405 |
|
char buf[128]; |
1406 |
|
case CCS_IP_ADDRESS_TYPE_ADDRESS_GROUP: |
1407 |
|
ccs_set_string(head, "@"); |
1408 |
|
ccs_set_string(head, |
1409 |
|
ptr->address.group->group_name->name); |
1410 |
|
break; |
1411 |
|
case CCS_IP_ADDRESS_TYPE_IPv4: |
1412 |
|
ccs_print_ipv4(buf, sizeof(buf), ptr->address.ipv4.min, |
1413 |
|
ptr->address.ipv4.max); |
1414 |
|
ccs_io_printf(head, "%s", buf); |
1415 |
|
break; |
1416 |
|
case CCS_IP_ADDRESS_TYPE_IPv6: |
1417 |
|
ccs_print_ipv6(buf, sizeof(buf), ptr->address.ipv6.min, |
1418 |
|
ptr->address.ipv6.max); |
1419 |
|
ccs_io_printf(head, "%s", buf); |
1420 |
|
break; |
1421 |
|
} |
1422 |
|
ccs_print_number_union(head, &ptr->port); |
1423 |
|
} else if (acl_type == CCS_TYPE_SIGNAL_ACL) { |
1424 |
|
struct ccs_signal_acl *ptr = |
1425 |
|
container_of(acl, typeof(*ptr), head); |
1426 |
|
ccs_io_printf(head, CCS_KEYWORD_ALLOW_SIGNAL "%u ", ptr->sig); |
1427 |
|
ccs_set_string(head, ptr->domainname->name); |
1428 |
|
} else if (acl_type == CCS_TYPE_MOUNT_ACL) { |
1429 |
|
struct ccs_mount_acl *ptr = |
1430 |
|
container_of(acl, typeof(*ptr), head); |
1431 |
|
ccs_io_printf(head, "allow_mount"); |
1432 |
|
ccs_print_name_union(head, &ptr->dev_name); |
1433 |
|
ccs_print_name_union(head, &ptr->dir_name); |
1434 |
|
ccs_print_name_union(head, &ptr->fs_type); |
1435 |
|
ccs_print_number_union(head, &ptr->flags); |
1436 |
|
} |
1437 |
|
head->r.bit = bit + 1; |
1438 |
|
if (acl->cond) { |
1439 |
|
head->r.print_cond_part = true; |
1440 |
|
head->r.cond_step = 0; |
1441 |
|
if (!ccs_flush(head)) |
1442 |
|
return false; |
1443 |
|
print_cond_part: |
1444 |
|
if (!ccs_print_condition(head, acl->cond)) |
1445 |
return false; |
return false; |
1446 |
|
head->r.print_cond_part = false; |
1447 |
|
} else { |
1448 |
|
ccs_set_lf(head); |
1449 |
} |
} |
1450 |
return true; |
switch (acl_type) { |
1451 |
} |
case CCS_TYPE_PATH_ACL: |
1452 |
|
case CCS_TYPE_MKDEV_ACL: |
1453 |
/** |
case CCS_TYPE_PATH2_ACL: |
1454 |
* ccs_print_network_acl - Print a network ACL entry. |
case CCS_TYPE_PATH_NUMBER_ACL: |
1455 |
* |
case CCS_TYPE_IP_NETWORK_ACL: |
1456 |
* @head: Pointer to "struct ccs_io_buffer". |
goto next; |
|
* @ptr: Pointer to "struct ccs_ip_network_acl_record". |
|
|
* @cond: Pointer to "struct ccs_condition". May be NULL. |
|
|
* |
|
|
* Returns true on success, false otherwise. |
|
|
*/ |
|
|
static bool ccs_print_network_acl(struct ccs_io_buffer *head, |
|
|
struct ccs_ip_network_acl_record *ptr, |
|
|
const struct ccs_condition *cond) |
|
|
{ |
|
|
int pos = head->read_avail; |
|
|
if (!ccs_io_printf(head, KEYWORD_ALLOW_NETWORK "%s ", |
|
|
ccs_net2keyword(ptr->operation_type))) |
|
|
goto out; |
|
|
switch (ptr->record_type) { |
|
|
case IP_RECORD_TYPE_ADDRESS_GROUP: |
|
|
if (!ccs_io_printf(head, "@%s", |
|
|
ptr->address.group->group_name->name)) |
|
|
goto out; |
|
|
break; |
|
|
case IP_RECORD_TYPE_IPv4: |
|
|
if (!ccs_print_ipv4_entry(head, ptr)) |
|
|
goto out; |
|
|
break; |
|
|
case IP_RECORD_TYPE_IPv6: |
|
|
if (!ccs_print_ipv6_entry(head, ptr)) |
|
|
goto out; |
|
|
break; |
|
1457 |
} |
} |
1458 |
if (!ccs_print_number_union(head, ptr->port_is_group, &ptr->port) || |
done: |
1459 |
!ccs_print_condition(head, cond)) |
head->r.bit = 0; |
|
goto out; |
|
|
return true; |
|
|
out: |
|
|
head->read_avail = pos; |
|
|
return false; |
|
|
} |
|
|
|
|
|
/** |
|
|
* ccs_print_signal_acl - Print a signal ACL entry. |
|
|
* |
|
|
* @head: Pointer to "struct ccs_io_buffer". |
|
|
* @ptr: Pointer to "struct signale_acl_record". |
|
|
* @cond: Pointer to "struct ccs_condition". May be NULL. |
|
|
* |
|
|
* Returns true on success, false otherwise. |
|
|
*/ |
|
|
static bool ccs_print_signal_acl(struct ccs_io_buffer *head, |
|
|
struct ccs_signal_acl_record *ptr, |
|
|
const struct ccs_condition *cond) |
|
|
{ |
|
|
int pos = head->read_avail; |
|
|
if (!ccs_io_printf(head, KEYWORD_ALLOW_SIGNAL "%u %s", |
|
|
ptr->sig, ptr->domainname->name)) |
|
|
goto out; |
|
|
if (!ccs_print_condition(head, cond)) |
|
|
goto out; |
|
|
return true; |
|
|
out: |
|
|
head->read_avail = pos; |
|
|
return false; |
|
|
} |
|
|
|
|
|
/** |
|
|
* ccs_print_execute_handler_record - Print an execute handler ACL entry. |
|
|
* |
|
|
* @head: Pointer to "struct ccs_io_buffer". |
|
|
* @keyword: Name of the keyword. |
|
|
* @ptr: Pointer to "struct ccs_execute_handler_record". |
|
|
* |
|
|
* Returns true on success, false otherwise. |
|
|
*/ |
|
|
static bool ccs_print_execute_handler_record(struct ccs_io_buffer *head, |
|
|
const char *keyword, |
|
|
struct ccs_execute_handler_record * |
|
|
ptr) |
|
|
{ |
|
|
return ccs_io_printf(head, "%s %s\n", keyword, ptr->handler->name); |
|
|
} |
|
|
|
|
|
/** |
|
|
* ccs_print_mount_acl - Print a mount ACL entry. |
|
|
* |
|
|
* @head: Pointer to "struct ccs_io_buffer". |
|
|
* @ptr: Pointer to "struct ccs_mount_acl_record". |
|
|
* @cond: Pointer to "struct ccs_condition". May be NULL. |
|
|
* |
|
|
* Returns true on success, false otherwise. |
|
|
*/ |
|
|
static bool ccs_print_mount_acl(struct ccs_io_buffer *head, |
|
|
struct ccs_mount_acl_record *ptr, |
|
|
const struct ccs_condition *cond) |
|
|
{ |
|
|
int pos = head->read_avail; |
|
|
if (!ccs_io_printf(head, KEYWORD_ALLOW_MOUNT "%s %s %s 0x%lX\n", |
|
|
ptr->dev_name->name, ptr->dir_name->name, |
|
|
ptr->fs_type->name, ptr->flags)) |
|
|
goto out; |
|
|
if (!ccs_print_condition(head, cond)) |
|
|
goto out; |
|
|
return true; |
|
|
out: |
|
|
head->read_avail = pos; |
|
|
return false; |
|
|
} |
|
|
|
|
|
/** |
|
|
* ccs_print_umount_acl - Print a mount ACL entry. |
|
|
* |
|
|
* @head: Pointer to "struct ccs_io_buffer". |
|
|
* @ptr: Pointer to "struct ccs_umount_acl_record". |
|
|
* @cond: Pointer to "struct ccs_condition". May be NULL. |
|
|
* |
|
|
* Returns true on success, false otherwise. |
|
|
*/ |
|
|
static bool ccs_print_umount_acl(struct ccs_io_buffer *head, |
|
|
struct ccs_umount_acl_record *ptr, |
|
|
const struct ccs_condition *cond) |
|
|
{ |
|
|
int pos = head->read_avail; |
|
|
if (!ccs_io_printf(head, KEYWORD_ALLOW_UNMOUNT "%s\n", |
|
|
ptr->dir->name)) |
|
|
goto out; |
|
|
if (!ccs_print_condition(head, cond)) |
|
|
goto out; |
|
|
return true; |
|
|
out: |
|
|
head->read_avail = pos; |
|
|
return false; |
|
|
} |
|
|
|
|
|
/** |
|
|
* ccs_print_chroot_acl - Print a chroot ACL entry. |
|
|
* |
|
|
* @head: Pointer to "struct ccs_io_buffer". |
|
|
* @ptr: Pointer to "struct ccs_chroot_acl_record". |
|
|
* @cond: Pointer to "struct ccs_condition". May be NULL. |
|
|
* |
|
|
* Returns true on success, false otherwise. |
|
|
*/ |
|
|
static bool ccs_print_chroot_acl(struct ccs_io_buffer *head, |
|
|
struct ccs_chroot_acl_record *ptr, |
|
|
const struct ccs_condition *cond) |
|
|
{ |
|
|
int pos = head->read_avail; |
|
|
if (!ccs_io_printf(head, KEYWORD_ALLOW_CHROOT "%s\n", |
|
|
ptr->dir->name)) |
|
|
goto out; |
|
|
if (!ccs_print_condition(head, cond)) |
|
|
goto out; |
|
1460 |
return true; |
return true; |
|
out: |
|
|
head->read_avail = pos; |
|
|
return false; |
|
1461 |
} |
} |
1462 |
|
|
1463 |
/** |
/** |
1464 |
* ccs_print_pivot_root_acl - Print a pivot_root ACL entry. |
* ccs_read_domain2 - Read domain policy. |
1465 |
* |
* |
1466 |
* @head: Pointer to "struct ccs_io_buffer". |
* @head: Pointer to "struct ccs_io_buffer". |
1467 |
* @ptr: Pointer to "struct ccs_pivot_root_acl_record". |
* @domain: Pointer to "struct ccs_domain_info". |
|
* @cond: Pointer to "struct ccs_condition". May be NULL. |
|
1468 |
* |
* |
1469 |
* Returns true on success, false otherwise. |
* Caller holds ccs_read_lock(). |
|
*/ |
|
|
static bool ccs_print_pivot_root_acl(struct ccs_io_buffer *head, |
|
|
struct ccs_pivot_root_acl_record *ptr, |
|
|
const struct ccs_condition *cond) |
|
|
{ |
|
|
int pos = head->read_avail; |
|
|
if (!ccs_io_printf(head, KEYWORD_ALLOW_PIVOT_ROOT "%s %s\n", |
|
|
ptr->new_root->name, ptr->old_root->name)) |
|
|
goto out; |
|
|
if (!ccs_print_condition(head, cond)) |
|
|
goto out; |
|
|
return true; |
|
|
out: |
|
|
head->read_avail = pos; |
|
|
return false; |
|
|
} |
|
|
|
|
|
/** |
|
|
* ccs_print_entry - Print an ACL entry. |
|
|
* |
|
|
* @head: Pointer to "struct ccs_io_buffer". |
|
|
* @ptr: Pointer to an ACL entry. |
|
1470 |
* |
* |
1471 |
* Returns true on success, false otherwise. |
* Returns true on success, false otherwise. |
1472 |
*/ |
*/ |
1473 |
static bool ccs_print_entry(struct ccs_io_buffer *head, |
static bool ccs_read_domain2(struct ccs_io_buffer *head, |
1474 |
struct ccs_acl_info *ptr) |
struct ccs_domain_info *domain) |
1475 |
{ |
{ |
1476 |
const struct ccs_condition *cond = ptr->cond; |
list_for_each_cookie(head->r.acl, &domain->acl_info_list) { |
1477 |
const u8 acl_type = ccs_acl_type2(ptr); |
struct ccs_acl_info *ptr = |
1478 |
if (acl_type & ACL_DELETED) |
list_entry(head->r.acl, typeof(*ptr), list); |
1479 |
return true; |
if (!ccs_print_entry(head, ptr)) |
1480 |
if (acl_type == TYPE_SINGLE_PATH_ACL) { |
return false; |
|
struct ccs_single_path_acl_record *acl |
|
|
= container_of(ptr, struct ccs_single_path_acl_record, |
|
|
head); |
|
|
return ccs_print_single_path_acl(head, acl, cond); |
|
|
} |
|
|
if (acl_type == TYPE_EXECUTE_HANDLER) { |
|
|
struct ccs_execute_handler_record *acl |
|
|
= container_of(ptr, struct ccs_execute_handler_record, |
|
|
head); |
|
|
const char *keyword = KEYWORD_EXECUTE_HANDLER; |
|
|
return ccs_print_execute_handler_record(head, keyword, acl); |
|
|
} |
|
|
if (acl_type == TYPE_DENIED_EXECUTE_HANDLER) { |
|
|
struct ccs_execute_handler_record *acl |
|
|
= container_of(ptr, struct ccs_execute_handler_record, |
|
|
head); |
|
|
const char *keyword = KEYWORD_DENIED_EXECUTE_HANDLER; |
|
|
return ccs_print_execute_handler_record(head, keyword, acl); |
|
|
} |
|
|
if (head->read_execute_only) |
|
|
return true; |
|
|
if (acl_type == TYPE_MKDEV_ACL) { |
|
|
struct ccs_mkdev_acl_record *acl |
|
|
= container_of(ptr, struct ccs_mkdev_acl_record, head); |
|
|
return ccs_print_mkdev_acl(head, acl, cond); |
|
|
} |
|
|
if (acl_type == TYPE_DOUBLE_PATH_ACL) { |
|
|
struct ccs_double_path_acl_record *acl |
|
|
= container_of(ptr, struct ccs_double_path_acl_record, |
|
|
head); |
|
|
return ccs_print_double_path_acl(head, acl, cond); |
|
|
} |
|
|
if (acl_type == TYPE_IOCTL_ACL) { |
|
|
struct ccs_ioctl_acl_record *acl |
|
|
= container_of(ptr, struct ccs_ioctl_acl_record, head); |
|
|
return ccs_print_ioctl_acl(head, acl, cond); |
|
|
} |
|
|
if (acl_type == TYPE_ARGV0_ACL) { |
|
|
struct ccs_argv0_acl_record *acl |
|
|
= container_of(ptr, struct ccs_argv0_acl_record, 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); |
|
|
return ccs_print_env_acl(head, acl, cond); |
|
|
} |
|
|
if (acl_type == TYPE_CAPABILITY_ACL) { |
|
|
struct ccs_capability_acl_record *acl |
|
|
= container_of(ptr, struct ccs_capability_acl_record, |
|
|
head); |
|
|
return ccs_print_capability_acl(head, acl, cond); |
|
|
} |
|
|
if (acl_type == TYPE_IP_NETWORK_ACL) { |
|
|
struct ccs_ip_network_acl_record *acl |
|
|
= container_of(ptr, struct ccs_ip_network_acl_record, |
|
|
head); |
|
|
return ccs_print_network_acl(head, acl, cond); |
|
|
} |
|
|
if (acl_type == TYPE_SIGNAL_ACL) { |
|
|
struct ccs_signal_acl_record *acl |
|
|
= container_of(ptr, struct ccs_signal_acl_record, head); |
|
|
return ccs_print_signal_acl(head, acl, cond); |
|
|
} |
|
|
if (acl_type == TYPE_MOUNT_ACL) { |
|
|
struct ccs_mount_acl_record *acl |
|
|
= container_of(ptr, struct ccs_mount_acl_record, head); |
|
|
return ccs_print_mount_acl(head, acl, cond); |
|
|
} |
|
|
if (acl_type == TYPE_UMOUNT_ACL) { |
|
|
struct ccs_umount_acl_record *acl |
|
|
= container_of(ptr, struct ccs_umount_acl_record, head); |
|
|
return ccs_print_umount_acl(head, acl, cond); |
|
|
} |
|
|
if (acl_type == TYPE_CHROOT_ACL) { |
|
|
struct ccs_chroot_acl_record *acl |
|
|
= container_of(ptr, struct ccs_chroot_acl_record, head); |
|
|
return ccs_print_chroot_acl(head, acl, cond); |
|
|
} |
|
|
if (acl_type == TYPE_PIVOT_ROOT_ACL) { |
|
|
struct ccs_pivot_root_acl_record *acl |
|
|
= container_of(ptr, struct ccs_pivot_root_acl_record, |
|
|
head); |
|
|
return ccs_print_pivot_root_acl(head, acl, cond); |
|
1481 |
} |
} |
1482 |
/* Workaround for gcc 3.2.2's inline bug. */ |
head->r.acl = NULL; |
1483 |
if (acl_type & ACL_DELETED) |
return true; |
|
return true; |
|
|
BUG(); /* This must not happen. */ |
|
|
return false; |
|
1484 |
} |
} |
1485 |
|
|
1486 |
/** |
/** |
1487 |
* ccs_read_domain_policy - Read domain policy. |
* ccs_read_domain - Read domain policy. |
1488 |
* |
* |
1489 |
* @head: Pointer to "struct ccs_io_buffer". |
* @head: Pointer to "struct ccs_io_buffer". |
1490 |
* |
* |
|
* Returns 0. |
|
|
* |
|
1491 |
* Caller holds ccs_read_lock(). |
* Caller holds ccs_read_lock(). |
1492 |
*/ |
*/ |
1493 |
static int ccs_read_domain_policy(struct ccs_io_buffer *head) |
static void ccs_read_domain(struct ccs_io_buffer *head) |
1494 |
{ |
{ |
1495 |
struct list_head *dpos; |
if (head->r.eof) |
1496 |
struct list_head *apos; |
return; |
1497 |
ccs_check_read_lock(); |
list_for_each_cookie(head->r.domain, &ccs_domain_list) { |
1498 |
if (head->read_eof) |
struct ccs_domain_info *domain = |
1499 |
return 0; |
list_entry(head->r.domain, typeof(*domain), list); |
1500 |
if (head->read_step == 0) |
switch (head->r.step) { |
1501 |
head->read_step = 1; |
u8 i; |
1502 |
list_for_each_cookie(dpos, head->read_var1, &ccs_domain_list) { |
case 0: |
1503 |
struct ccs_domain_info *domain; |
if (domain->is_deleted && |
1504 |
const char *quota_exceeded = ""; |
!head->r.print_this_domain_only) |
1505 |
const char *transition_failed = ""; |
continue; |
1506 |
const char *ignore_global_allow_read = ""; |
/* Print domainname and flags. */ |
1507 |
const char *ignore_global_allow_env = ""; |
ccs_set_string(head, domain->domainname->name); |
1508 |
domain = list_entry(dpos, struct ccs_domain_info, list); |
ccs_set_lf(head); |
1509 |
if (head->read_step != 1) |
ccs_io_printf(head, CCS_KEYWORD_USE_PROFILE "%u\n", |
1510 |
goto acl_loop; |
domain->profile); |
1511 |
if (domain->is_deleted && !head->read_single_domain) |
for (i = 0; i < CCS_MAX_DOMAIN_INFO_FLAGS; i++) |
1512 |
continue; |
if (domain->flags[i]) |
1513 |
/* Print domainname and flags. */ |
ccs_set_string(head, ccs_dif[i]); |
1514 |
if (domain->quota_warned) |
head->r.step++; |
1515 |
quota_exceeded = "quota_exceeded\n"; |
ccs_set_lf(head); |
1516 |
if (domain->domain_transition_failed) |
/* fall through */ |
1517 |
transition_failed = "transition_failed\n"; |
case 1: |
1518 |
if (domain->ignore_global_allow_read) |
if (!ccs_read_domain2(head, domain)) |
1519 |
ignore_global_allow_read |
return; |
1520 |
= KEYWORD_IGNORE_GLOBAL_ALLOW_READ "\n"; |
head->r.step++; |
1521 |
if (domain->ignore_global_allow_env) |
if (!ccs_set_lf(head)) |
1522 |
ignore_global_allow_env |
return; |
1523 |
= KEYWORD_IGNORE_GLOBAL_ALLOW_ENV "\n"; |
/* fall through */ |
1524 |
if (!ccs_io_printf(head, "%s\n" KEYWORD_USE_PROFILE "%u\n" |
case 2: |
1525 |
"%s%s%s%s\n", domain->domainname->name, |
head->r.step = 0; |
1526 |
domain->profile, quota_exceeded, |
if (head->r.print_this_domain_only) |
1527 |
transition_failed, |
goto done; |
1528 |
ignore_global_allow_read, |
} |
|
ignore_global_allow_env)) |
|
|
return 0; |
|
|
head->read_step = 2; |
|
|
acl_loop: |
|
|
if (head->read_step == 3) |
|
|
goto tail_mark; |
|
|
/* Print ACL entries in the domain. */ |
|
|
list_for_each_cookie(apos, head->read_var2, |
|
|
&domain->acl_info_list) { |
|
|
struct ccs_acl_info *ptr |
|
|
= list_entry(apos, struct ccs_acl_info, list); |
|
|
if (!ccs_print_entry(head, ptr)) |
|
|
return 0; |
|
|
} |
|
|
head->read_step = 3; |
|
|
tail_mark: |
|
|
if (!ccs_io_printf(head, "\n")) |
|
|
return 0; |
|
|
head->read_step = 1; |
|
|
if (head->read_single_domain) |
|
|
break; |
|
1529 |
} |
} |
1530 |
head->read_eof = true; |
done: |
1531 |
return 0; |
head->r.eof = true; |
1532 |
} |
} |
1533 |
|
|
1534 |
/** |
/** |
1541 |
* This is equivalent to doing |
* This is equivalent to doing |
1542 |
* |
* |
1543 |
* ( echo "select " $domainname; echo "use_profile " $profile ) | |
* ( echo "select " $domainname; echo "use_profile " $profile ) | |
1544 |
* /usr/lib/ccs/loadpolicy -d |
* /usr/sbin/ccs-loadpolicy -d |
1545 |
* |
* |
1546 |
* Caller holds ccs_read_lock(). |
* Caller holds ccs_read_lock(). |
1547 |
*/ |
*/ |
1551 |
char *cp = strchr(data, ' '); |
char *cp = strchr(data, ' '); |
1552 |
struct ccs_domain_info *domain; |
struct ccs_domain_info *domain; |
1553 |
unsigned int profile; |
unsigned int profile; |
|
ccs_check_read_lock(); |
|
1554 |
if (!cp) |
if (!cp) |
1555 |
return -EINVAL; |
return -EINVAL; |
1556 |
*cp = '\0'; |
*cp = '\0'; |
1557 |
profile = simple_strtoul(data, NULL, 10); |
profile = simple_strtoul(data, NULL, 10); |
1558 |
if (profile >= MAX_PROFILES) |
if (profile >= CCS_MAX_PROFILES) |
1559 |
return -EINVAL; |
return -EINVAL; |
1560 |
domain = ccs_find_domain(cp + 1); |
domain = ccs_find_domain(cp + 1); |
1561 |
if (domain && (ccs_profile_ptr[profile] || !ccs_policy_loaded)) |
if (domain && (!ccs_policy_loaded || ccs_profile_ptr[(u8) profile])) |
1562 |
domain->profile = (u8) profile; |
domain->profile = (u8) profile; |
1563 |
return 0; |
return 0; |
1564 |
} |
} |
1568 |
* |
* |
1569 |
* @head: Pointer to "struct ccs_io_buffer". |
* @head: Pointer to "struct ccs_io_buffer". |
1570 |
* |
* |
|
* Returns list of profile number and domainname pairs. |
|
|
* |
|
1571 |
* This is equivalent to doing |
* This is equivalent to doing |
1572 |
* |
* |
1573 |
* grep -A 1 '^<kernel>' /proc/ccs/domain_policy | |
* grep -A 1 '^<kernel>' /proc/ccs/domain_policy | |
1577 |
* |
* |
1578 |
* Caller holds ccs_read_lock(). |
* Caller holds ccs_read_lock(). |
1579 |
*/ |
*/ |
1580 |
static int ccs_read_domain_profile(struct ccs_io_buffer *head) |
static void ccs_read_domain_profile(struct ccs_io_buffer *head) |
1581 |
{ |
{ |
1582 |
struct list_head *pos; |
if (head->r.eof) |
1583 |
ccs_check_read_lock(); |
return; |
1584 |
if (head->read_eof) |
list_for_each_cookie(head->r.domain, &ccs_domain_list) { |
1585 |
return 0; |
struct ccs_domain_info *domain = |
1586 |
list_for_each_cookie(pos, head->read_var1, &ccs_domain_list) { |
list_entry(head->r.domain, typeof(*domain), list); |
|
struct ccs_domain_info *domain; |
|
|
domain = list_entry(pos, struct ccs_domain_info, list); |
|
1587 |
if (domain->is_deleted) |
if (domain->is_deleted) |
1588 |
continue; |
continue; |
1589 |
if (!ccs_io_printf(head, "%u %s\n", domain->profile, |
if (!ccs_flush(head)) |
1590 |
domain->domainname->name)) |
return; |
1591 |
return 0; |
ccs_io_printf(head, "%u ", domain->profile); |
1592 |
|
ccs_set_string(head, domain->domainname->name); |
1593 |
|
ccs_set_lf(head); |
1594 |
} |
} |
1595 |
head->read_eof = true; |
head->r.eof = true; |
|
return 0; |
|
1596 |
} |
} |
1597 |
|
|
1598 |
/** |
/** |
1604 |
*/ |
*/ |
1605 |
static int ccs_write_pid(struct ccs_io_buffer *head) |
static int ccs_write_pid(struct ccs_io_buffer *head) |
1606 |
{ |
{ |
1607 |
head->read_eof = false; |
head->r.eof = false; |
1608 |
return 0; |
return 0; |
1609 |
} |
} |
1610 |
|
|
1619 |
* |
* |
1620 |
* Caller holds ccs_read_lock(). |
* Caller holds ccs_read_lock(). |
1621 |
*/ |
*/ |
1622 |
static int ccs_read_pid(struct ccs_io_buffer *head) |
static void ccs_read_pid(struct ccs_io_buffer *head) |
1623 |
{ |
{ |
1624 |
char *buf = head->write_buf; |
char *buf = head->write_buf; |
1625 |
bool task_info = false; |
bool task_info = false; |
1626 |
|
bool global_pid = false; |
1627 |
unsigned int pid; |
unsigned int pid; |
1628 |
struct task_struct *p; |
struct task_struct *p; |
1629 |
struct ccs_domain_info *domain = NULL; |
struct ccs_domain_info *domain = NULL; |
1630 |
u32 ccs_flags = 0; |
u32 ccs_flags = 0; |
|
ccs_check_read_lock(); |
|
1631 |
/* Accessing write_buf is safe because head->io_sem is held. */ |
/* Accessing write_buf is safe because head->io_sem is held. */ |
1632 |
if (!buf) |
if (!buf) { |
1633 |
goto done; /* Do nothing if open(O_RDONLY). */ |
head->r.eof = true; |
1634 |
if (head->read_avail || head->read_eof) |
return; /* Do nothing if open(O_RDONLY). */ |
1635 |
goto done; |
} |
1636 |
head->read_eof = true; |
if (head->r.w_pos || head->r.eof) |
1637 |
|
return; |
1638 |
|
head->r.eof = true; |
1639 |
if (ccs_str_starts(&buf, "info ")) |
if (ccs_str_starts(&buf, "info ")) |
1640 |
task_info = true; |
task_info = true; |
1641 |
|
if (ccs_str_starts(&buf, "global-pid ")) |
1642 |
|
global_pid = true; |
1643 |
pid = (unsigned int) simple_strtoul(buf, NULL, 10); |
pid = (unsigned int) simple_strtoul(buf, NULL, 10); |
1644 |
/***** CRITICAL SECTION START *****/ |
ccs_tasklist_lock(); |
1645 |
read_lock(&tasklist_lock); |
#if LINUX_VERSION_CODE >= KERNEL_VERSION(2, 6, 24) |
1646 |
|
if (global_pid) |
1647 |
|
p = ccsecurity_exports.find_task_by_pid_ns(pid, &init_pid_ns); |
1648 |
|
else |
1649 |
|
p = ccsecurity_exports.find_task_by_vpid(pid); |
1650 |
|
#else |
1651 |
p = find_task_by_pid(pid); |
p = find_task_by_pid(pid); |
1652 |
|
#endif |
1653 |
if (p) { |
if (p) { |
1654 |
domain = ccs_task_domain(p); |
domain = ccs_task_domain(p); |
1655 |
ccs_flags = p->ccs_flags; |
ccs_flags = p->ccs_flags; |
1656 |
} |
} |
1657 |
read_unlock(&tasklist_lock); |
ccs_tasklist_unlock(); |
|
/***** CRITICAL SECTION END *****/ |
|
1658 |
if (!domain) |
if (!domain) |
1659 |
goto done; |
return; |
1660 |
if (!task_info) |
if (!task_info) { |
1661 |
ccs_io_printf(head, "%u %u %s", pid, domain->profile, |
ccs_io_printf(head, "%u %u ", pid, domain->profile); |
1662 |
domain->domainname->name); |
ccs_set_string(head, domain->domainname->name); |
1663 |
else |
} else { |
1664 |
ccs_io_printf(head, "%u manager=%s execute_handler=%s " |
ccs_io_printf(head, "%u manager=%s execute_handler=%s " |
1665 |
"state[0]=%u state[1]=%u state[2]=%u", pid, |
"state[0]=%u state[1]=%u state[2]=%u", pid, |
1666 |
ccs_flags & CCS_TASK_IS_POLICY_MANAGER ? |
ccs_yesno(ccs_flags & |
1667 |
"yes" : "no", |
CCS_TASK_IS_MANAGER), |
1668 |
ccs_flags & CCS_TASK_IS_EXECUTE_HANDLER ? |
ccs_yesno(ccs_flags & |
1669 |
"yes" : "no", |
CCS_TASK_IS_EXECUTE_HANDLER), |
1670 |
(u8) (ccs_flags >> 24), |
(u8) (ccs_flags >> 24), |
1671 |
(u8) (ccs_flags >> 16), |
(u8) (ccs_flags >> 16), |
1672 |
(u8) (ccs_flags >> 8)); |
(u8) (ccs_flags >> 8)); |
1673 |
done: |
} |
|
return 0; |
|
1674 |
} |
} |
1675 |
|
|
1676 |
|
static const char *ccs_transition_type[CCS_MAX_TRANSITION_TYPE] = { |
1677 |
|
[CCS_TRANSITION_CONTROL_NO_INITIALIZE] |
1678 |
|
= CCS_KEYWORD_NO_INITIALIZE_DOMAIN, |
1679 |
|
[CCS_TRANSITION_CONTROL_INITIALIZE] = CCS_KEYWORD_INITIALIZE_DOMAIN, |
1680 |
|
[CCS_TRANSITION_CONTROL_NO_KEEP] = CCS_KEYWORD_NO_KEEP_DOMAIN, |
1681 |
|
[CCS_TRANSITION_CONTROL_KEEP] = CCS_KEYWORD_KEEP_DOMAIN |
1682 |
|
}; |
1683 |
|
|
1684 |
|
static const char *ccs_group_name[CCS_MAX_GROUP] = { |
1685 |
|
[CCS_PATH_GROUP] = CCS_KEYWORD_PATH_GROUP, |
1686 |
|
[CCS_NUMBER_GROUP] = CCS_KEYWORD_NUMBER_GROUP, |
1687 |
|
[CCS_ADDRESS_GROUP] = CCS_KEYWORD_ADDRESS_GROUP |
1688 |
|
}; |
1689 |
|
|
1690 |
/** |
/** |
1691 |
* ccs_write_exception_policy - Write exception policy. |
* ccs_write_exception - Write exception policy. |
1692 |
* |
* |
1693 |
* @head: Pointer to "struct ccs_io_buffer". |
* @head: Pointer to "struct ccs_io_buffer". |
1694 |
* |
* |
1695 |
* Returns 0 on success, negative value otherwise. |
* Returns 0 on success, negative value otherwise. |
1696 |
*/ |
*/ |
1697 |
static int ccs_write_exception_policy(struct ccs_io_buffer *head) |
static int ccs_write_exception(struct ccs_io_buffer *head) |
1698 |
{ |
{ |
1699 |
char *data = head->write_buf; |
char *data = head->write_buf; |
1700 |
bool is_delete = ccs_str_starts(&data, KEYWORD_DELETE); |
const bool is_delete = ccs_str_starts(&data, CCS_KEYWORD_DELETE); |
1701 |
if (ccs_str_starts(&data, KEYWORD_KEEP_DOMAIN)) |
u8 i; |
1702 |
return ccs_write_domain_keeper_policy(data, false, is_delete); |
static const struct { |
1703 |
if (ccs_str_starts(&data, KEYWORD_NO_KEEP_DOMAIN)) |
const char *keyword; |
1704 |
return ccs_write_domain_keeper_policy(data, true, is_delete); |
int (*write) (char *, const bool); |
1705 |
if (ccs_str_starts(&data, KEYWORD_INITIALIZE_DOMAIN)) |
} ccs_callback[4] = { |
1706 |
return ccs_write_domain_initializer_policy(data, false, |
{ CCS_KEYWORD_AGGREGATOR, ccs_write_aggregator }, |
1707 |
is_delete); |
{ CCS_KEYWORD_FILE_PATTERN, ccs_write_pattern }, |
1708 |
if (ccs_str_starts(&data, KEYWORD_NO_INITIALIZE_DOMAIN)) |
{ CCS_KEYWORD_DENY_REWRITE, ccs_write_no_rewrite }, |
1709 |
return ccs_write_domain_initializer_policy(data, true, |
{ CCS_KEYWORD_DENY_AUTOBIND, ccs_write_reserved_port } |
1710 |
is_delete); |
}; |
1711 |
if (ccs_str_starts(&data, KEYWORD_AGGREGATOR)) |
for (i = 0; i < 4; i++) { |
1712 |
return ccs_write_aggregator_policy(data, is_delete); |
if (ccs_str_starts(&data, ccs_callback[i].keyword)) |
1713 |
if (ccs_str_starts(&data, KEYWORD_ALLOW_READ)) |
return ccs_callback[i].write(data, is_delete); |
1714 |
return ccs_write_globally_readable_policy(data, is_delete); |
} |
1715 |
if (ccs_str_starts(&data, KEYWORD_ALLOW_ENV)) |
for (i = 0; i < CCS_MAX_TRANSITION_TYPE; i++) { |
1716 |
return ccs_write_globally_usable_env_policy(data, is_delete); |
if (ccs_str_starts(&data, ccs_transition_type[i])) |
1717 |
if (ccs_str_starts(&data, KEYWORD_FILE_PATTERN)) |
return ccs_write_transition_control(data, is_delete, |
1718 |
return ccs_write_pattern_policy(data, is_delete); |
i); |
1719 |
if (ccs_str_starts(&data, KEYWORD_PATH_GROUP)) |
} |
1720 |
return ccs_write_path_group_policy(data, is_delete); |
for (i = 0; i < CCS_MAX_GROUP; i++) { |
1721 |
if (ccs_str_starts(&data, KEYWORD_NUMBER_GROUP)) |
if (ccs_str_starts(&data, ccs_group_name[i])) |
1722 |
return ccs_write_number_group_policy(data, is_delete); |
return ccs_write_group(data, is_delete, i); |
1723 |
if (ccs_str_starts(&data, KEYWORD_DENY_REWRITE)) |
} |
1724 |
return ccs_write_no_rewrite_policy(data, is_delete); |
return ccs_write_domain2(data, &ccs_global_domain, is_delete); |
|
if (ccs_str_starts(&data, KEYWORD_ADDRESS_GROUP)) |
|
|
return ccs_write_address_group_policy(data, is_delete); |
|
|
if (ccs_str_starts(&data, KEYWORD_DENY_AUTOBIND)) |
|
|
return ccs_write_reserved_port_policy(data, is_delete); |
|
|
return -EINVAL; |
|
1725 |
} |
} |
1726 |
|
|
1727 |
/** |
/** |
1728 |
* ccs_read_exception_policy - Read exception policy. |
* ccs_read_group - Read "struct ccs_path_group"/"struct ccs_number_group"/"struct ccs_address_group" list. |
1729 |
* |
* |
1730 |
* @head: Pointer to "struct ccs_io_buffer". |
* @head: Pointer to "struct ccs_io_buffer". |
1731 |
|
* @idx: Index number. |
1732 |
* |
* |
1733 |
* Returns 0 on success, -EINVAL otherwise. |
* Returns true on success, false otherwise. |
1734 |
* |
* |
1735 |
* Caller holds ccs_read_lock(). |
* Caller holds ccs_read_lock(). |
1736 |
*/ |
*/ |
1737 |
static int ccs_read_exception_policy(struct ccs_io_buffer *head) |
static bool ccs_read_group(struct ccs_io_buffer *head, const int idx) |
1738 |
{ |
{ |
1739 |
ccs_check_read_lock(); |
list_for_each_cookie(head->r.group, &ccs_group_list[idx]) { |
1740 |
if (!head->read_eof) { |
struct ccs_group *group = |
1741 |
switch (head->read_step) { |
list_entry(head->r.group, typeof(*group), head.list); |
1742 |
case 0: |
list_for_each_cookie(head->r.acl, &group->member_list) { |
1743 |
head->read_var2 = NULL; |
struct ccs_acl_head *ptr = |
1744 |
head->read_step = 1; |
list_entry(head->r.acl, typeof(*ptr), list); |
1745 |
case 1: |
if (ptr->is_deleted) |
1746 |
if (!ccs_read_domain_keeper_policy(head)) |
continue; |
1747 |
break; |
if (!ccs_flush(head)) |
1748 |
head->read_var2 = NULL; |
return false; |
1749 |
head->read_step = 2; |
ccs_set_string(head, ccs_group_name[idx]); |
1750 |
case 2: |
ccs_set_string(head, group->group_name->name); |
1751 |
if (!ccs_read_globally_readable_policy(head)) |
if (idx == CCS_PATH_GROUP) { |
1752 |
break; |
ccs_set_space(head); |
1753 |
head->read_var2 = NULL; |
ccs_set_string(head, container_of |
1754 |
head->read_step = 3; |
(ptr, struct ccs_path_group, |
1755 |
case 3: |
head)->member_name->name); |
1756 |
if (!ccs_read_globally_usable_env_policy(head)) |
} else if (idx == CCS_NUMBER_GROUP) { |
1757 |
break; |
ccs_print_number_union(head, &container_of |
1758 |
head->read_var2 = NULL; |
(ptr, struct ccs_number_group, |
1759 |
head->read_step = 4; |
head)->number); |
1760 |
case 4: |
} else if (idx == CCS_ADDRESS_GROUP) { |
1761 |
if (!ccs_read_domain_initializer_policy(head)) |
char buffer[128]; |
1762 |
break; |
struct ccs_address_group *member = |
1763 |
head->read_var2 = NULL; |
container_of(ptr, typeof(*member), |
1764 |
head->read_step = 6; |
head); |
1765 |
case 6: |
if (member->is_ipv6) |
1766 |
if (!ccs_read_aggregator_policy(head)) |
ccs_print_ipv6(buffer, sizeof(buffer), |
1767 |
break; |
member->min.ipv6, |
1768 |
head->read_var2 = NULL; |
member->max.ipv6); |
1769 |
head->read_step = 7; |
else |
1770 |
case 7: |
ccs_print_ipv4(buffer, sizeof(buffer), |
1771 |
if (!ccs_read_file_pattern(head)) |
member->min.ipv4, |
1772 |
break; |
member->max.ipv4); |
1773 |
head->read_var2 = NULL; |
ccs_io_printf(head, " %s", buffer); |
1774 |
head->read_step = 8; |
} |
1775 |
case 8: |
ccs_set_lf(head); |
1776 |
if (!ccs_read_no_rewrite_policy(head)) |
} |
1777 |
break; |
head->r.acl = NULL; |
1778 |
head->read_var2 = NULL; |
} |
1779 |
head->read_step = 9; |
head->r.group = NULL; |
1780 |
case 9: |
return true; |
1781 |
if (!ccs_read_path_group_policy(head)) |
} |
1782 |
break; |
|
1783 |
head->read_var1 = NULL; |
/** |
1784 |
head->read_var2 = NULL; |
* ccs_read_policy - Read "struct ccs_..._entry" list. |
1785 |
head->read_step = 10; |
* |
1786 |
case 10: |
* @head: Pointer to "struct ccs_io_buffer". |
1787 |
if (!ccs_read_number_group_policy(head)) |
* @idx: Index number. |
1788 |
break; |
* |
1789 |
head->read_var1 = NULL; |
* Returns true on success, false otherwise. |
1790 |
head->read_var2 = NULL; |
* |
1791 |
head->read_step = 11; |
* Caller holds ccs_read_lock(). |
1792 |
case 11: |
*/ |
1793 |
if (!ccs_read_address_group_policy(head)) |
static bool ccs_read_policy(struct ccs_io_buffer *head, const int idx) |
1794 |
break; |
{ |
1795 |
head->read_var2 = NULL; |
list_for_each_cookie(head->r.acl, &ccs_policy_list[idx]) { |
1796 |
head->read_step = 12; |
struct ccs_acl_head *acl = |
1797 |
case 12: |
container_of(head->r.acl, typeof(*acl), list); |
1798 |
if (!ccs_read_reserved_port_policy(head)) |
if (acl->is_deleted) |
1799 |
break; |
continue; |
1800 |
head->read_eof = true; |
if (!ccs_flush(head)) |
1801 |
|
return false; |
1802 |
|
switch (idx) { |
1803 |
|
case CCS_ID_TRANSITION_CONTROL: |
1804 |
|
{ |
1805 |
|
struct ccs_transition_control *ptr = |
1806 |
|
container_of(acl, typeof(*ptr), head); |
1807 |
|
ccs_set_string(head, |
1808 |
|
ccs_transition_type[ptr->type]); |
1809 |
|
ccs_set_string(head, ptr->program ? |
1810 |
|
ptr->program->name : "any"); |
1811 |
|
ccs_set_string(head, " from "); |
1812 |
|
ccs_set_string(head, ptr->domainname ? |
1813 |
|
ptr->domainname->name : "any"); |
1814 |
|
} |
1815 |
|
break; |
1816 |
|
case CCS_ID_AGGREGATOR: |
1817 |
|
{ |
1818 |
|
struct ccs_aggregator *ptr = |
1819 |
|
container_of(acl, typeof(*ptr), head); |
1820 |
|
ccs_set_string(head, CCS_KEYWORD_AGGREGATOR); |
1821 |
|
ccs_set_string(head, ptr->original_name->name); |
1822 |
|
ccs_set_space(head); |
1823 |
|
ccs_set_string(head, |
1824 |
|
ptr->aggregated_name->name); |
1825 |
|
} |
1826 |
|
break; |
1827 |
|
case CCS_ID_PATTERN: |
1828 |
|
{ |
1829 |
|
struct ccs_pattern *ptr = |
1830 |
|
container_of(acl, typeof(*ptr), head); |
1831 |
|
ccs_set_string(head, CCS_KEYWORD_FILE_PATTERN); |
1832 |
|
ccs_set_string(head, ptr->pattern->name); |
1833 |
|
} |
1834 |
|
break; |
1835 |
|
case CCS_ID_NO_REWRITE: |
1836 |
|
{ |
1837 |
|
struct ccs_no_rewrite *ptr = |
1838 |
|
container_of(acl, typeof(*ptr), head); |
1839 |
|
ccs_set_string(head, CCS_KEYWORD_DENY_REWRITE); |
1840 |
|
ccs_set_string(head, ptr->pattern->name); |
1841 |
|
} |
1842 |
|
break; |
1843 |
|
case CCS_ID_RESERVEDPORT: |
1844 |
|
{ |
1845 |
|
struct ccs_reserved *ptr = |
1846 |
|
container_of(acl, typeof(*ptr), head); |
1847 |
|
const u16 min_port = ptr->min_port; |
1848 |
|
const u16 max_port = ptr->max_port; |
1849 |
|
ccs_set_string(head, |
1850 |
|
CCS_KEYWORD_DENY_AUTOBIND); |
1851 |
|
ccs_io_printf(head, "%u", min_port); |
1852 |
|
if (min_port != max_port) |
1853 |
|
ccs_io_printf(head, "-%u", max_port); |
1854 |
|
} |
1855 |
break; |
break; |
1856 |
default: |
default: |
1857 |
return -EINVAL; |
continue; |
1858 |
} |
} |
1859 |
|
ccs_set_lf(head); |
1860 |
} |
} |
1861 |
return 0; |
head->r.acl = NULL; |
1862 |
|
return true; |
1863 |
|
} |
1864 |
|
|
1865 |
|
/** |
1866 |
|
* ccs_read_exception - Read exception policy. |
1867 |
|
* |
1868 |
|
* @head: Pointer to "struct ccs_io_buffer". |
1869 |
|
* |
1870 |
|
* Caller holds ccs_read_lock(). |
1871 |
|
*/ |
1872 |
|
static void ccs_read_exception(struct ccs_io_buffer *head) |
1873 |
|
{ |
1874 |
|
if (head->r.eof) |
1875 |
|
return; |
1876 |
|
while (head->r.step < CCS_MAX_POLICY && |
1877 |
|
ccs_read_policy(head, head->r.step)) |
1878 |
|
head->r.step++; |
1879 |
|
if (head->r.step < CCS_MAX_POLICY) |
1880 |
|
return; |
1881 |
|
while (head->r.step < CCS_MAX_POLICY + CCS_MAX_GROUP && |
1882 |
|
ccs_read_group(head, head->r.step - CCS_MAX_POLICY)) |
1883 |
|
head->r.step++; |
1884 |
|
if (head->r.step < CCS_MAX_POLICY + CCS_MAX_GROUP) |
1885 |
|
return; |
1886 |
|
head->r.eof = ccs_read_domain2(head, &ccs_global_domain); |
1887 |
} |
} |
1888 |
|
|
1889 |
/* Wait queue for ccs_query_list. */ |
/* Wait queue for ccs_query_list. */ |
1908 |
/* Number of "struct file" referring /proc/ccs/query interface. */ |
/* Number of "struct file" referring /proc/ccs/query interface. */ |
1909 |
static atomic_t ccs_query_observers = ATOMIC_INIT(0); |
static atomic_t ccs_query_observers = ATOMIC_INIT(0); |
1910 |
|
|
1911 |
|
static void ccs_truncate(char *str) |
1912 |
|
{ |
1913 |
|
while (* (unsigned char *) str > (unsigned char) ' ') |
1914 |
|
str++; |
1915 |
|
*str = '\0'; |
1916 |
|
} |
1917 |
|
|
1918 |
/** |
/** |
1919 |
* ccs_check_supervisor - Ask for the supervisor's decision. |
* ccs_supervisor - Ask for the supervisor's decision. |
1920 |
* |
* |
1921 |
* @r: Pointer to "struct ccs_request_info". |
* @r: Pointer to "struct ccs_request_info". |
1922 |
* @fmt: The printf()'s format string, followed by parameters. |
* @fmt: The printf()'s format string, followed by parameters. |
1923 |
* |
* |
1924 |
* Returns 0 if the supervisor decided to permit the access request which |
* Returns 0 if the supervisor decided to permit the access request which |
1925 |
* violated the policy in enforcing mode, 1 if the supervisor decided to |
* violated the policy in enforcing mode, CCS_RETRY_REQUEST if the supervisor |
1926 |
* retry the access request which violated the policy in enforcing mode, |
* decided to retry the access request which violated the policy in enforcing |
1927 |
* -EPERM otherwise. |
* mode, 0 if it is not in enforcing mode, -EPERM otherwise. |
1928 |
*/ |
*/ |
1929 |
int ccs_check_supervisor(struct ccs_request_info *r, const char *fmt, ...) |
int ccs_supervisor(struct ccs_request_info *r, const char *fmt, ...) |
1930 |
{ |
{ |
1931 |
va_list args; |
va_list args; |
1932 |
int error = -EPERM; |
int error = -EPERM; |
1936 |
struct ccs_query_entry *ccs_query_entry = NULL; |
struct ccs_query_entry *ccs_query_entry = NULL; |
1937 |
bool quota_exceeded = false; |
bool quota_exceeded = false; |
1938 |
char *header; |
char *header; |
1939 |
if (!r->domain) |
struct ccs_domain_info * const domain = ccs_current_domain(); |
1940 |
r->domain = ccs_current_domain(); |
va_start(args, fmt); |
1941 |
|
len = vsnprintf((char *) &pos, sizeof(pos) - 1, fmt, args) + 80; |
1942 |
|
va_end(args); |
1943 |
|
if (r->mode == CCS_CONFIG_LEARNING) { |
1944 |
|
char *buffer; |
1945 |
|
char *realpath = NULL; |
1946 |
|
char *argv0 = NULL; |
1947 |
|
char *symlink = NULL; |
1948 |
|
char *handler = NULL; |
1949 |
|
const struct ccs_preference *pref; |
1950 |
|
if (!ccs_domain_quota_ok(r)) |
1951 |
|
return 0; |
1952 |
|
header = ccs_init_log(&len, r); |
1953 |
|
if (!header) |
1954 |
|
return 0; |
1955 |
|
pref = ccs_profile(r->profile)->learning; |
1956 |
|
/* strstr() will return NULL if ordering is wrong. */ |
1957 |
|
if (r->param_type == CCS_TYPE_PATH_ACL && |
1958 |
|
r->param.path.operation == CCS_TYPE_EXECUTE) { |
1959 |
|
if (pref->learning_exec_argv0) { |
1960 |
|
argv0 = strstr(header, " argv[]={ \""); |
1961 |
|
if (argv0) { |
1962 |
|
argv0 += 10; |
1963 |
|
ccs_truncate(argv0); |
1964 |
|
} |
1965 |
|
} |
1966 |
|
if (pref->learning_exec_realpath) { |
1967 |
|
realpath = strstr(header, |
1968 |
|
" exec={ realpath=\""); |
1969 |
|
if (realpath) { |
1970 |
|
realpath += 8; |
1971 |
|
ccs_truncate(realpath); |
1972 |
|
} |
1973 |
|
} |
1974 |
|
} else if (r->param_type == CCS_TYPE_PATH_ACL && |
1975 |
|
r->param.path.operation == CCS_TYPE_SYMLINK && |
1976 |
|
pref->learning_symlink_target) { |
1977 |
|
symlink = strstr(header, " symlink.target=\""); |
1978 |
|
if (symlink) |
1979 |
|
ccs_truncate(symlink + 1); |
1980 |
|
} |
1981 |
|
handler = strstr(header, "type=execute_handler"); |
1982 |
|
if (handler) |
1983 |
|
ccs_truncate(handler); |
1984 |
|
buffer = kmalloc(len, CCS_GFP_FLAGS); |
1985 |
|
if (buffer) { |
1986 |
|
va_start(args, fmt); |
1987 |
|
vsnprintf(buffer, len - 1, fmt, args); |
1988 |
|
va_end(args); |
1989 |
|
if (handler || realpath || argv0 || symlink) { |
1990 |
|
ccs_addprintf(buffer, len, " if"); |
1991 |
|
if (handler) |
1992 |
|
ccs_addprintf(buffer, len, " task.%s", |
1993 |
|
handler); |
1994 |
|
if (realpath) |
1995 |
|
ccs_addprintf(buffer, len, " exec.%s", |
1996 |
|
realpath); |
1997 |
|
if (argv0) |
1998 |
|
ccs_addprintf(buffer, len, |
1999 |
|
" exec.argv[0]=%s", |
2000 |
|
argv0); |
2001 |
|
if (symlink) |
2002 |
|
ccs_addprintf(buffer, len, "%s", |
2003 |
|
symlink); |
2004 |
|
} |
2005 |
|
ccs_normalize_line(buffer); |
2006 |
|
ccs_write_domain2(buffer, domain, false); |
2007 |
|
kfree(buffer); |
2008 |
|
} |
2009 |
|
kfree(header); |
2010 |
|
return 0; |
2011 |
|
} |
2012 |
|
if (r->mode != CCS_CONFIG_ENFORCING) |
2013 |
|
return 0; |
2014 |
if (!atomic_read(&ccs_query_observers)) { |
if (!atomic_read(&ccs_query_observers)) { |
2015 |
int i; |
int i; |
2016 |
if (current->ccs_flags & CCS_DONT_SLEEP_ON_ENFORCE_ERROR) |
if (current->ccs_flags & CCS_DONT_SLEEP_ON_ENFORCE_ERROR) |
2017 |
return -EPERM; |
return -EPERM; |
2018 |
for (i = 0; i < ccs_check_flags(r->domain, CCS_SLEEP_PERIOD); |
for (i = 0; i < ccs_profile(domain->profile)->enforcing-> |
2019 |
i++) { |
enforcing_penalty; i++) { |
2020 |
set_current_state(TASK_INTERRUPTIBLE); |
set_current_state(TASK_INTERRUPTIBLE); |
2021 |
schedule_timeout(HZ / 10); |
schedule_timeout(HZ / 10); |
2022 |
} |
} |
2023 |
return -EPERM; |
return -EPERM; |
2024 |
} |
} |
2025 |
va_start(args, fmt); |
header = ccs_init_log(&len, r); |
|
len = vsnprintf((char *) &pos, sizeof(pos) - 1, fmt, args) + 32; |
|
|
va_end(args); |
|
|
header = ccs_init_audit_log(&len, r); |
|
2026 |
if (!header) |
if (!header) |
2027 |
goto out; |
goto out; |
2028 |
ccs_query_entry = kzalloc(sizeof(*ccs_query_entry), GFP_KERNEL); |
ccs_query_entry = kzalloc(sizeof(*ccs_query_entry), CCS_GFP_FLAGS); |
2029 |
if (!ccs_query_entry) |
if (!ccs_query_entry) |
2030 |
goto out; |
goto out; |
2031 |
ccs_query_entry->query = kzalloc(len, GFP_KERNEL); |
len = ccs_round2(len); |
2032 |
|
ccs_query_entry->query = kzalloc(len, CCS_GFP_FLAGS); |
2033 |
if (!ccs_query_entry->query) |
if (!ccs_query_entry->query) |
2034 |
goto out; |
goto out; |
2035 |
INIT_LIST_HEAD(&ccs_query_entry->list); |
INIT_LIST_HEAD(&ccs_query_entry->list); |
|
/***** CRITICAL SECTION START *****/ |
|
2036 |
spin_lock(&ccs_query_list_lock); |
spin_lock(&ccs_query_list_lock); |
2037 |
if (ccs_quota_for_query && ccs_query_memory_size + len + |
if (ccs_quota_for_query && ccs_query_memory_size + len + |
2038 |
sizeof(*ccs_query_entry) >= ccs_quota_for_query) { |
sizeof(*ccs_query_entry) >= ccs_quota_for_query) { |
2042 |
ccs_query_entry->serial = ccs_serial++; |
ccs_query_entry->serial = ccs_serial++; |
2043 |
} |
} |
2044 |
spin_unlock(&ccs_query_list_lock); |
spin_unlock(&ccs_query_list_lock); |
|
/***** CRITICAL SECTION END *****/ |
|
2045 |
if (quota_exceeded) |
if (quota_exceeded) |
2046 |
goto out; |
goto out; |
2047 |
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", |
2052 |
vsnprintf(ccs_query_entry->query + pos, len - 1 - pos, fmt, args); |
vsnprintf(ccs_query_entry->query + pos, len - 1 - pos, fmt, args); |
2053 |
ccs_query_entry->query_len = strlen(ccs_query_entry->query) + 1; |
ccs_query_entry->query_len = strlen(ccs_query_entry->query) + 1; |
2054 |
va_end(args); |
va_end(args); |
|
/***** CRITICAL SECTION START *****/ |
|
2055 |
spin_lock(&ccs_query_list_lock); |
spin_lock(&ccs_query_list_lock); |
2056 |
list_add_tail(&ccs_query_entry->list, &ccs_query_list); |
list_add_tail(&ccs_query_entry->list, &ccs_query_list); |
2057 |
spin_unlock(&ccs_query_list_lock); |
spin_unlock(&ccs_query_list_lock); |
|
/***** CRITICAL SECTION END *****/ |
|
2058 |
/* Give 10 seconds for supervisor's opinion. */ |
/* Give 10 seconds for supervisor's opinion. */ |
2059 |
for (ccs_query_entry->timer = 0; |
for (ccs_query_entry->timer = 0; |
2060 |
atomic_read(&ccs_query_observers) && ccs_query_entry->timer < 100; |
atomic_read(&ccs_query_observers) && ccs_query_entry->timer < 100; |
2065 |
if (ccs_query_entry->answer) |
if (ccs_query_entry->answer) |
2066 |
break; |
break; |
2067 |
} |
} |
|
/***** CRITICAL SECTION START *****/ |
|
2068 |
spin_lock(&ccs_query_list_lock); |
spin_lock(&ccs_query_list_lock); |
2069 |
list_del(&ccs_query_entry->list); |
list_del(&ccs_query_entry->list); |
2070 |
ccs_query_memory_size -= len + sizeof(*ccs_query_entry); |
ccs_query_memory_size -= len + sizeof(*ccs_query_entry); |
2071 |
spin_unlock(&ccs_query_list_lock); |
spin_unlock(&ccs_query_list_lock); |
|
/***** CRITICAL SECTION END *****/ |
|
2072 |
switch (ccs_query_entry->answer) { |
switch (ccs_query_entry->answer) { |
2073 |
case 3: /* Asked to retry by administrator. */ |
case 3: /* Asked to retry by administrator. */ |
2074 |
error = 1; |
error = CCS_RETRY_REQUEST; |
2075 |
r->retry++; |
r->retry++; |
2076 |
break; |
break; |
2077 |
case 1: |
case 1: |
2109 |
bool found = false; |
bool found = false; |
2110 |
u8 i; |
u8 i; |
2111 |
for (i = 0; i < 2; i++) { |
for (i = 0; i < 2; i++) { |
|
/***** CRITICAL SECTION START *****/ |
|
2112 |
spin_lock(&ccs_query_list_lock); |
spin_lock(&ccs_query_list_lock); |
2113 |
list_for_each(tmp, &ccs_query_list) { |
list_for_each(tmp, &ccs_query_list) { |
2114 |
struct ccs_query_entry *ptr |
struct ccs_query_entry *ptr = |
2115 |
= list_entry(tmp, struct ccs_query_entry, list); |
list_entry(tmp, struct ccs_query_entry, list); |
2116 |
if (ptr->answer) |
if (ptr->answer) |
2117 |
continue; |
continue; |
2118 |
found = true; |
found = true; |
2119 |
break; |
break; |
2120 |
} |
} |
2121 |
spin_unlock(&ccs_query_list_lock); |
spin_unlock(&ccs_query_list_lock); |
|
/***** CRITICAL SECTION END *****/ |
|
2122 |
if (found) |
if (found) |
2123 |
return POLLIN | POLLRDNORM; |
return POLLIN | POLLRDNORM; |
2124 |
if (i) |
if (i) |
2132 |
* ccs_read_query - Read access requests which violated policy in enforcing mode. |
* ccs_read_query - Read access requests which violated policy in enforcing mode. |
2133 |
* |
* |
2134 |
* @head: Pointer to "struct ccs_io_buffer". |
* @head: Pointer to "struct ccs_io_buffer". |
|
* |
|
|
* Returns 0. |
|
2135 |
*/ |
*/ |
2136 |
static int ccs_read_query(struct ccs_io_buffer *head) |
static void ccs_read_query(struct ccs_io_buffer *head) |
2137 |
{ |
{ |
2138 |
struct list_head *tmp; |
struct list_head *tmp; |
2139 |
int pos = 0; |
int pos = 0; |
2140 |
int len = 0; |
int len = 0; |
2141 |
char *buf; |
char *buf; |
2142 |
if (head->read_avail) |
if (head->r.w_pos) |
2143 |
return 0; |
return; |
2144 |
if (head->read_buf) { |
if (head->read_buf) { |
2145 |
kfree(head->read_buf); |
kfree(head->read_buf); |
2146 |
head->read_buf = NULL; |
head->read_buf = NULL; |
|
head->readbuf_size = 0; |
|
2147 |
} |
} |
|
/***** CRITICAL SECTION START *****/ |
|
2148 |
spin_lock(&ccs_query_list_lock); |
spin_lock(&ccs_query_list_lock); |
2149 |
list_for_each(tmp, &ccs_query_list) { |
list_for_each(tmp, &ccs_query_list) { |
2150 |
struct ccs_query_entry *ptr |
struct ccs_query_entry *ptr |
2151 |
= list_entry(tmp, struct ccs_query_entry, list); |
= list_entry(tmp, struct ccs_query_entry, list); |
2152 |
if (ptr->answer) |
if (ptr->answer) |
2153 |
continue; |
continue; |
2154 |
if (pos++ != head->read_step) |
if (pos++ != head->r.query_index) |
2155 |
continue; |
continue; |
2156 |
len = ptr->query_len; |
len = ptr->query_len; |
2157 |
break; |
break; |
2158 |
} |
} |
2159 |
spin_unlock(&ccs_query_list_lock); |
spin_unlock(&ccs_query_list_lock); |
|
/***** CRITICAL SECTION END *****/ |
|
2160 |
if (!len) { |
if (!len) { |
2161 |
head->read_step = 0; |
head->r.query_index = 0; |
2162 |
return 0; |
return; |
2163 |
} |
} |
2164 |
buf = kzalloc(len, GFP_KERNEL); |
buf = kzalloc(len, CCS_GFP_FLAGS); |
2165 |
if (!buf) |
if (!buf) |
2166 |
return 0; |
return; |
2167 |
pos = 0; |
pos = 0; |
|
/***** CRITICAL SECTION START *****/ |
|
2168 |
spin_lock(&ccs_query_list_lock); |
spin_lock(&ccs_query_list_lock); |
2169 |
list_for_each(tmp, &ccs_query_list) { |
list_for_each(tmp, &ccs_query_list) { |
2170 |
struct ccs_query_entry *ptr |
struct ccs_query_entry *ptr |
2171 |
= list_entry(tmp, struct ccs_query_entry, list); |
= list_entry(tmp, struct ccs_query_entry, list); |
2172 |
if (ptr->answer) |
if (ptr->answer) |
2173 |
continue; |
continue; |
2174 |
if (pos++ != head->read_step) |
if (pos++ != head->r.query_index) |
2175 |
continue; |
continue; |
2176 |
/* |
/* |
2177 |
* Some query can be skipped because ccs_query_list |
* Some query can be skipped because ccs_query_list |
2182 |
break; |
break; |
2183 |
} |
} |
2184 |
spin_unlock(&ccs_query_list_lock); |
spin_unlock(&ccs_query_list_lock); |
|
/***** CRITICAL SECTION END *****/ |
|
2185 |
if (buf[0]) { |
if (buf[0]) { |
|
head->read_avail = len; |
|
|
head->readbuf_size = head->read_avail; |
|
2186 |
head->read_buf = buf; |
head->read_buf = buf; |
2187 |
head->read_step++; |
head->r.w[head->r.w_pos++] = buf; |
2188 |
|
head->r.query_index++; |
2189 |
} else { |
} else { |
2190 |
kfree(buf); |
kfree(buf); |
2191 |
} |
} |
|
return 0; |
|
2192 |
} |
} |
2193 |
|
|
2194 |
/** |
/** |
2204 |
struct list_head *tmp; |
struct list_head *tmp; |
2205 |
unsigned int serial; |
unsigned int serial; |
2206 |
unsigned int answer; |
unsigned int answer; |
|
/***** CRITICAL SECTION START *****/ |
|
2207 |
spin_lock(&ccs_query_list_lock); |
spin_lock(&ccs_query_list_lock); |
2208 |
list_for_each(tmp, &ccs_query_list) { |
list_for_each(tmp, &ccs_query_list) { |
2209 |
struct ccs_query_entry *ptr |
struct ccs_query_entry *ptr |
2211 |
ptr->timer = 0; |
ptr->timer = 0; |
2212 |
} |
} |
2213 |
spin_unlock(&ccs_query_list_lock); |
spin_unlock(&ccs_query_list_lock); |
|
/***** CRITICAL SECTION END *****/ |
|
2214 |
if (sscanf(data, "A%u=%u", &serial, &answer) != 2) |
if (sscanf(data, "A%u=%u", &serial, &answer) != 2) |
2215 |
return -EINVAL; |
return -EINVAL; |
|
/***** CRITICAL SECTION START *****/ |
|
2216 |
spin_lock(&ccs_query_list_lock); |
spin_lock(&ccs_query_list_lock); |
2217 |
list_for_each(tmp, &ccs_query_list) { |
list_for_each(tmp, &ccs_query_list) { |
2218 |
struct ccs_query_entry *ptr |
struct ccs_query_entry *ptr |
2224 |
break; |
break; |
2225 |
} |
} |
2226 |
spin_unlock(&ccs_query_list_lock); |
spin_unlock(&ccs_query_list_lock); |
|
/***** CRITICAL SECTION END *****/ |
|
2227 |
return 0; |
return 0; |
2228 |
} |
} |
2229 |
|
|
2231 |
* ccs_read_version: Get version. |
* ccs_read_version: Get version. |
2232 |
* |
* |
2233 |
* @head: Pointer to "struct ccs_io_buffer". |
* @head: Pointer to "struct ccs_io_buffer". |
|
* |
|
|
* Returns version information. |
|
2234 |
*/ |
*/ |
2235 |
static int ccs_read_version(struct ccs_io_buffer *head) |
static void ccs_read_version(struct ccs_io_buffer *head) |
2236 |
{ |
{ |
2237 |
if (!head->read_eof) { |
if (head->r.eof) |
2238 |
ccs_io_printf(head, "1.7.0-pre"); |
return; |
2239 |
head->read_eof = true; |
ccs_set_string(head, "1.7.2"); |
2240 |
} |
head->r.eof = true; |
|
return 0; |
|
2241 |
} |
} |
2242 |
|
|
2243 |
/** |
/** |
2244 |
* ccs_read_self_domain - Get the current process's domainname. |
* ccs_read_self_domain - Get the current process's domainname. |
2245 |
* |
* |
2246 |
* @head: Pointer to "struct ccs_io_buffer". |
* @head: Pointer to "struct ccs_io_buffer". |
|
* |
|
|
* Returns the current process's domainname. |
|
2247 |
*/ |
*/ |
2248 |
static int ccs_read_self_domain(struct ccs_io_buffer *head) |
static void ccs_read_self_domain(struct ccs_io_buffer *head) |
2249 |
{ |
{ |
2250 |
if (!head->read_eof) { |
if (head->r.eof) |
2251 |
/* |
return; |
2252 |
* ccs_current_domain()->domainname != NULL |
/* |
2253 |
* because every process belongs to a domain and |
* ccs_current_domain()->domainname != NULL because every process |
2254 |
* the domain's name cannot be NULL. |
* belongs to a domain and the domain's name cannot be NULL. |
2255 |
*/ |
*/ |
2256 |
ccs_io_printf(head, "%s", |
ccs_io_printf(head, "%s", ccs_current_domain()->domainname->name); |
2257 |
ccs_current_domain()->domainname->name); |
head->r.eof = true; |
|
head->read_eof = true; |
|
|
} |
|
|
return 0; |
|
2258 |
} |
} |
2259 |
|
|
2260 |
/** |
/** |
2267 |
*/ |
*/ |
2268 |
int ccs_open_control(const u8 type, struct file *file) |
int ccs_open_control(const u8 type, struct file *file) |
2269 |
{ |
{ |
2270 |
struct ccs_io_buffer *head = kzalloc(sizeof(*head), GFP_KERNEL); |
struct ccs_io_buffer *head = kzalloc(sizeof(*head), CCS_GFP_FLAGS); |
2271 |
if (!head) |
if (!head) |
2272 |
return -ENOMEM; |
return -ENOMEM; |
2273 |
mutex_init(&head->io_sem); |
mutex_init(&head->io_sem); |
2274 |
head->type = type; |
head->type = type; |
2275 |
switch (type) { |
switch (type) { |
2276 |
case CCS_DOMAINPOLICY: /* /proc/ccs/domain_policy */ |
case CCS_DOMAINPOLICY: /* /proc/ccs/domain_policy */ |
2277 |
head->write = ccs_write_domain_policy; |
head->write = ccs_write_domain; |
2278 |
head->read = ccs_read_domain_policy; |
head->read = ccs_read_domain; |
2279 |
break; |
break; |
2280 |
case CCS_EXCEPTIONPOLICY: /* /proc/ccs/exception_policy */ |
case CCS_EXCEPTIONPOLICY: /* /proc/ccs/exception_policy */ |
2281 |
head->write = ccs_write_exception_policy; |
head->write = ccs_write_exception; |
2282 |
head->read = ccs_read_exception_policy; |
head->read = ccs_read_exception; |
2283 |
break; |
break; |
2284 |
#ifdef CONFIG_CCSECURITY_AUDIT |
#ifdef CONFIG_CCSECURITY_AUDIT |
2285 |
case CCS_GRANTLOG: /* /proc/ccs/grant_log */ |
case CCS_GRANTLOG: /* /proc/ccs/grant_log */ |
|
head->poll = ccs_poll_grant_log; |
|
|
head->read = ccs_read_grant_log; |
|
|
break; |
|
2286 |
case CCS_REJECTLOG: /* /proc/ccs/reject_log */ |
case CCS_REJECTLOG: /* /proc/ccs/reject_log */ |
2287 |
head->poll = ccs_poll_reject_log; |
head->poll = ccs_poll_log; |
2288 |
head->read = ccs_read_reject_log; |
head->read = ccs_read_log; |
2289 |
break; |
break; |
2290 |
#endif |
#endif |
2291 |
case CCS_SELFDOMAIN: /* /proc/ccs/self_domain */ |
case CCS_SELFDOMAIN: /* /proc/ccs/self_domain */ |
2325 |
head->read = ccs_read_query; |
head->read = ccs_read_query; |
2326 |
break; |
break; |
2327 |
case CCS_MANAGER: /* /proc/ccs/manager */ |
case CCS_MANAGER: /* /proc/ccs/manager */ |
2328 |
head->write = ccs_write_manager_policy; |
head->write = ccs_write_manager; |
2329 |
head->read = ccs_read_manager_policy; |
head->read = ccs_read_manager; |
2330 |
break; |
break; |
2331 |
} |
} |
2332 |
if (!(file->f_mode & FMODE_READ)) { |
if (!(file->f_mode & FMODE_READ)) { |
2336 |
*/ |
*/ |
2337 |
head->read = NULL; |
head->read = NULL; |
2338 |
head->poll = NULL; |
head->poll = NULL; |
2339 |
} else if (type != CCS_QUERY && |
} else if (!head->poll) { |
2340 |
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. |
|
|
*/ |
|
2341 |
if (!head->readbuf_size) |
if (!head->readbuf_size) |
2342 |
head->readbuf_size = 4096 * 2; |
head->readbuf_size = 4096; |
2343 |
head->read_buf = kzalloc(head->readbuf_size, GFP_KERNEL); |
head->read_buf = kzalloc(head->readbuf_size, CCS_GFP_FLAGS); |
2344 |
if (!head->read_buf) { |
if (!head->read_buf) { |
2345 |
kfree(head); |
kfree(head); |
2346 |
return -ENOMEM; |
return -ENOMEM; |
2353 |
*/ |
*/ |
2354 |
head->write = NULL; |
head->write = NULL; |
2355 |
} else if (head->write) { |
} else if (head->write) { |
2356 |
head->writebuf_size = 4096 * 2; |
head->writebuf_size = 4096; |
2357 |
head->write_buf = kzalloc(head->writebuf_size, GFP_KERNEL); |
head->write_buf = kzalloc(head->writebuf_size, CCS_GFP_FLAGS); |
2358 |
if (!head->write_buf) { |
if (!head->write_buf) { |
2359 |
kfree(head->read_buf); |
kfree(head->read_buf); |
2360 |
kfree(head); |
kfree(head); |
2363 |
} |
} |
2364 |
if (type != CCS_QUERY && |
if (type != CCS_QUERY && |
2365 |
type != CCS_GRANTLOG && type != CCS_REJECTLOG) |
type != CCS_GRANTLOG && type != CCS_REJECTLOG) |
2366 |
head->reader_idx = ccs_read_lock(); |
head->reader_idx = ccs_lock(); |
2367 |
file->private_data = head; |
file->private_data = head; |
2368 |
/* |
/* |
2369 |
* Call the handler now if the file is /proc/ccs/self_domain |
* Call the handler now if the file is /proc/ccs/self_domain |
2374 |
ccs_read_control(file, NULL, 0); |
ccs_read_control(file, NULL, 0); |
2375 |
/* |
/* |
2376 |
* If the file is /proc/ccs/query , increment the observer counter. |
* If the file is /proc/ccs/query , increment the observer counter. |
2377 |
* The obserber counter is used by ccs_check_supervisor() to see if |
* The obserber counter is used by ccs_supervisor() to see if |
2378 |
* there is some process monitoring /proc/ccs/query. |
* there is some process monitoring /proc/ccs/query. |
2379 |
*/ |
*/ |
2380 |
else if (type == CCS_QUERY) |
else if (type == CCS_QUERY) |
2389 |
* @wait: Pointer to "poll_table". |
* @wait: Pointer to "poll_table". |
2390 |
* |
* |
2391 |
* Waits for read readiness. |
* Waits for read readiness. |
2392 |
* /proc/ccs/query is handled by /usr/lib/ccs/ccs-queryd and |
* /proc/ccs/query is handled by /usr/sbin/ccs-queryd and |
2393 |
* /proc/ccs/grant_log and /proc/ccs/reject_log are handled by |
* /proc/ccs/grant_log and /proc/ccs/reject_log are handled by |
2394 |
* /usr/lib/ccs/ccs-auditd. |
* /usr/sbin/ccs-auditd . |
2395 |
*/ |
*/ |
2396 |
int ccs_poll_control(struct file *file, poll_table *wait) |
int ccs_poll_control(struct file *file, poll_table *wait) |
2397 |
{ |
{ |
2413 |
int ccs_read_control(struct file *file, char __user *buffer, |
int ccs_read_control(struct file *file, char __user *buffer, |
2414 |
const int buffer_len) |
const int buffer_len) |
2415 |
{ |
{ |
2416 |
int len = 0; |
int len; |
2417 |
struct ccs_io_buffer *head = file->private_data; |
struct ccs_io_buffer *head = file->private_data; |
2418 |
char *cp; |
int idx; |
2419 |
if (!head->read) |
if (!head->read) |
2420 |
return -ENOSYS; |
return -ENOSYS; |
2421 |
if (!access_ok(VERIFY_WRITE, buffer, buffer_len)) |
if (!access_ok(VERIFY_WRITE, buffer, buffer_len)) |
2422 |
return -EFAULT; |
return -EFAULT; |
2423 |
if (mutex_lock_interruptible(&head->io_sem)) |
if (mutex_lock_interruptible(&head->io_sem)) |
2424 |
return -EINTR; |
return -EINTR; |
2425 |
/* Call the policy handler. */ |
head->read_user_buf = buffer; |
2426 |
len = head->read(head); |
head->read_user_buf_avail = buffer_len; |
2427 |
if (len < 0) |
idx = ccs_read_lock(); |
2428 |
goto out; |
if (ccs_flush(head)) |
2429 |
/* Write to buffer. */ |
/* Call the policy handler. */ |
2430 |
len = head->read_avail; |
head->read(head); |
2431 |
if (len > buffer_len) |
ccs_flush(head); |
2432 |
len = buffer_len; |
ccs_read_unlock(idx); |
2433 |
if (!len) |
len = head->read_user_buf - buffer; |
|
goto out; |
|
|
/* head->read_buf changes by some functions. */ |
|
|
cp = head->read_buf; |
|
|
if (copy_to_user(buffer, cp, len)) { |
|
|
len = -EFAULT; |
|
|
goto out; |
|
|
} |
|
|
head->read_avail -= len; |
|
|
memmove(cp, cp + len, head->read_avail); |
|
|
out: |
|
2434 |
mutex_unlock(&head->io_sem); |
mutex_unlock(&head->io_sem); |
2435 |
return len; |
return len; |
2436 |
} |
} |
2451 |
int error = buffer_len; |
int error = buffer_len; |
2452 |
int avail_len = buffer_len; |
int avail_len = buffer_len; |
2453 |
char *cp0 = head->write_buf; |
char *cp0 = head->write_buf; |
2454 |
|
int idx; |
2455 |
if (!head->write) |
if (!head->write) |
2456 |
return -ENOSYS; |
return -ENOSYS; |
2457 |
if (!access_ok(VERIFY_READ, buffer, buffer_len)) |
if (!access_ok(VERIFY_READ, buffer, buffer_len)) |
2458 |
return -EFAULT; |
return -EFAULT; |
|
/* Don't allow updating policies by non manager programs. */ |
|
|
if (head->write != ccs_write_pid && |
|
|
head->write != ccs_write_domain_policy && |
|
|
!ccs_is_policy_manager()) |
|
|
return -EPERM; |
|
2459 |
if (mutex_lock_interruptible(&head->io_sem)) |
if (mutex_lock_interruptible(&head->io_sem)) |
2460 |
return -EINTR; |
return -EINTR; |
2461 |
|
idx = ccs_read_lock(); |
2462 |
|
/* Don't allow updating policies by non manager programs. */ |
2463 |
|
if (head->write != ccs_write_pid && head->write != ccs_write_domain && |
2464 |
|
!ccs_manager()) { |
2465 |
|
ccs_read_unlock(idx); |
2466 |
|
mutex_unlock(&head->io_sem); |
2467 |
|
return -EPERM; |
2468 |
|
} |
2469 |
/* Read a line and dispatch it to the policy handler. */ |
/* Read a line and dispatch it to the policy handler. */ |
2470 |
while (avail_len > 0) { |
while (avail_len > 0) { |
2471 |
char c; |
char c; |
2472 |
if (head->write_avail >= head->writebuf_size - 1) { |
if (head->w.avail >= head->writebuf_size - 1) { |
2473 |
error = -ENOMEM; |
const int len = head->writebuf_size * 2; |
2474 |
break; |
char *cp = kzalloc(len, CCS_GFP_FLAGS); |
2475 |
} else if (get_user(c, buffer)) { |
if (!cp) { |
2476 |
|
error = -ENOMEM; |
2477 |
|
break; |
2478 |
|
} |
2479 |
|
memmove(cp, cp0, head->w.avail); |
2480 |
|
kfree(cp0); |
2481 |
|
head->write_buf = cp; |
2482 |
|
cp0 = cp; |
2483 |
|
head->writebuf_size = len; |
2484 |
|
| |