1 |
kumaneko |
111 |
/* |
2 |
|
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* fs/ccs_common.c |
3 |
|
|
* |
4 |
|
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* Common functions for SAKURA and TOMOYO. |
5 |
|
|
* |
6 |
kumaneko |
2030 |
* Copyright (C) 2005-2009 NTT DATA CORPORATION |
7 |
kumaneko |
111 |
* |
8 |
kumaneko |
2727 |
* Version: 1.7.0-pre 2009/07/03 |
9 |
kumaneko |
111 |
* |
10 |
|
|
* This file is applicable to both 2.4.30 and 2.6.11 and later. |
11 |
|
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* See README.ccs for ChangeLog. |
12 |
|
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* |
13 |
|
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*/ |
14 |
|
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|
15 |
kumaneko |
1255 |
#include <linux/version.h> |
16 |
|
|
#if LINUX_VERSION_CODE < KERNEL_VERSION(2, 5, 0) |
17 |
|
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#define __KERNEL_SYSCALLS__ |
18 |
|
|
#endif |
19 |
kumaneko |
111 |
#include <linux/string.h> |
20 |
|
|
#include <linux/mm.h> |
21 |
|
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#include <linux/utime.h> |
22 |
|
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#include <linux/file.h> |
23 |
|
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#include <linux/module.h> |
24 |
|
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#include <linux/slab.h> |
25 |
|
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#include <asm/uaccess.h> |
26 |
|
|
#include <stdarg.h> |
27 |
kumaneko |
1052 |
#if LINUX_VERSION_CODE >= KERNEL_VERSION(2, 5, 0) |
28 |
kumaneko |
111 |
#include <linux/namei.h> |
29 |
|
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#include <linux/mount.h> |
30 |
kumaneko |
2002 |
static const int ccs_lookup_flags = LOOKUP_FOLLOW; |
31 |
kumaneko |
111 |
#else |
32 |
kumaneko |
2002 |
static const int ccs_lookup_flags = LOOKUP_FOLLOW | LOOKUP_POSITIVE; |
33 |
kumaneko |
111 |
#endif |
34 |
kumaneko |
1255 |
#if LINUX_VERSION_CODE < KERNEL_VERSION(2, 5, 0) |
35 |
|
|
#include <linux/unistd.h> |
36 |
|
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#endif |
37 |
kumaneko |
2763 |
#include <linux/ccs_common.h> |
38 |
|
|
#include <linux/tomoyo.h> |
39 |
kumaneko |
1052 |
|
40 |
|
|
/* To support PID namespace. */ |
41 |
|
|
#if LINUX_VERSION_CODE >= KERNEL_VERSION(2, 6, 24) |
42 |
kumaneko |
964 |
#define find_task_by_pid find_task_by_vpid |
43 |
|
|
#endif |
44 |
kumaneko |
111 |
|
45 |
kumaneko |
1052 |
/* Set default specified by the kernel config. */ |
46 |
kumaneko |
2703 |
#define MAX_ACCEPT_ENTRY (CONFIG_CCSECURITY_MAX_ACCEPT_ENTRY) |
47 |
|
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#define MAX_GRANT_LOG (CONFIG_CCSECURITY_MAX_GRANT_LOG) |
48 |
|
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#define MAX_REJECT_LOG (CONFIG_CCSECURITY_MAX_REJECT_LOG) |
49 |
kumaneko |
111 |
|
50 |
kumaneko |
2690 |
DEFINE_MUTEX(ccs_policy_lock); |
51 |
kumaneko |
2540 |
|
52 |
kumaneko |
1052 |
/* Has /sbin/init started? */ |
53 |
kumaneko |
2040 |
bool ccs_policy_loaded; |
54 |
kumaneko |
111 |
|
55 |
kumaneko |
1052 |
/* Log level for SAKURA's printk(). */ |
56 |
kumaneko |
111 |
const char *ccs_log_level = KERN_DEBUG; |
57 |
|
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|
58 |
kumaneko |
1052 |
/* String table for functionality that takes 4 modes. */ |
59 |
kumaneko |
2002 |
static const char *ccs_mode_4[4] = { |
60 |
kumaneko |
1052 |
"disabled", "learning", "permissive", "enforcing" |
61 |
|
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}; |
62 |
|
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/* String table for functionality that takes 2 modes. */ |
63 |
kumaneko |
2002 |
static const char *ccs_mode_2[4] = { |
64 |
kumaneko |
1052 |
"disabled", "enabled", "enabled", "enabled" |
65 |
|
|
}; |
66 |
kumaneko |
1014 |
|
67 |
kumaneko |
1052 |
/* Table for profile. */ |
68 |
kumaneko |
111 |
static struct { |
69 |
|
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const char *keyword; |
70 |
|
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unsigned int current_value; |
71 |
|
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const unsigned int max_value; |
72 |
|
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} ccs_control_array[CCS_MAX_CONTROL_INDEX] = { |
73 |
kumaneko |
2282 |
[CCS_MAC_FOR_FILE] = { "MAC_FOR_FILE", 0, 3 }, |
74 |
|
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[CCS_MAC_FOR_IOCTL] = { "MAC_FOR_IOCTL", 0, 3 }, |
75 |
|
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[CCS_MAC_FOR_ARGV0] = { "MAC_FOR_ARGV0", 0, 3 }, |
76 |
|
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[CCS_MAC_FOR_ENV] = { "MAC_FOR_ENV", 0, 3 }, |
77 |
|
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[CCS_MAC_FOR_NETWORK] = { "MAC_FOR_NETWORK", 0, 3 }, |
78 |
|
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[CCS_MAC_FOR_SIGNAL] = { "MAC_FOR_SIGNAL", 0, 3 }, |
79 |
kumaneko |
2708 |
[CCS_MAC_FOR_NAMESPACE] = { "MAC_FOR_NAMESPACE", 0, 3 }, |
80 |
kumaneko |
2282 |
[CCS_RESTRICT_AUTOBIND] = { "RESTRICT_AUTOBIND", 0, 1 }, |
81 |
|
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[CCS_MAX_ACCEPT_ENTRY] |
82 |
kumaneko |
1052 |
= { "MAX_ACCEPT_ENTRY", MAX_ACCEPT_ENTRY, INT_MAX }, |
83 |
kumaneko |
2703 |
#ifdef CONFIG_CCSECURITY_AUDIT |
84 |
kumaneko |
2282 |
[CCS_MAX_GRANT_LOG] |
85 |
kumaneko |
1052 |
= { "MAX_GRANT_LOG", MAX_GRANT_LOG, INT_MAX }, |
86 |
kumaneko |
2282 |
[CCS_MAX_REJECT_LOG] |
87 |
kumaneko |
1052 |
= { "MAX_REJECT_LOG", MAX_REJECT_LOG, INT_MAX }, |
88 |
kumaneko |
2213 |
#endif |
89 |
kumaneko |
2282 |
[CCS_VERBOSE] = { "TOMOYO_VERBOSE", 1, 1 }, |
90 |
kumaneko |
1052 |
[CCS_SLEEP_PERIOD] |
91 |
|
|
= { "SLEEP_PERIOD", 0, 3000 }, /* in 0.1 second */ |
92 |
kumaneko |
111 |
}; |
93 |
|
|
|
94 |
kumaneko |
1052 |
/* Capability name used by domain policy. */ |
95 |
kumaneko |
2282 |
static const char *ccs_capability_control_keyword[CCS_MAX_CAPABILITY_INDEX] |
96 |
kumaneko |
2002 |
= { |
97 |
kumaneko |
2282 |
[CCS_INET_STREAM_SOCKET_CREATE] = "inet_tcp_create", |
98 |
|
|
[CCS_INET_STREAM_SOCKET_LISTEN] = "inet_tcp_listen", |
99 |
|
|
[CCS_INET_STREAM_SOCKET_CONNECT] = "inet_tcp_connect", |
100 |
|
|
[CCS_USE_INET_DGRAM_SOCKET] = "use_inet_udp", |
101 |
|
|
[CCS_USE_INET_RAW_SOCKET] = "use_inet_ip", |
102 |
|
|
[CCS_USE_ROUTE_SOCKET] = "use_route", |
103 |
|
|
[CCS_USE_PACKET_SOCKET] = "use_packet", |
104 |
|
|
[CCS_SYS_MOUNT] = "SYS_MOUNT", |
105 |
|
|
[CCS_SYS_UMOUNT] = "SYS_UMOUNT", |
106 |
|
|
[CCS_SYS_REBOOT] = "SYS_REBOOT", |
107 |
|
|
[CCS_SYS_CHROOT] = "SYS_CHROOT", |
108 |
|
|
[CCS_SYS_KILL] = "SYS_KILL", |
109 |
|
|
[CCS_SYS_VHANGUP] = "SYS_VHANGUP", |
110 |
|
|
[CCS_SYS_SETTIME] = "SYS_TIME", |
111 |
|
|
[CCS_SYS_NICE] = "SYS_NICE", |
112 |
|
|
[CCS_SYS_SETHOSTNAME] = "SYS_SETHOSTNAME", |
113 |
|
|
[CCS_USE_KERNEL_MODULE] = "use_kernel_module", |
114 |
|
|
[CCS_CREATE_FIFO] = "create_fifo", |
115 |
|
|
[CCS_CREATE_BLOCK_DEV] = "create_block_dev", |
116 |
|
|
[CCS_CREATE_CHAR_DEV] = "create_char_dev", |
117 |
|
|
[CCS_CREATE_UNIX_SOCKET] = "create_unix_socket", |
118 |
|
|
[CCS_SYS_LINK] = "SYS_LINK", |
119 |
|
|
[CCS_SYS_SYMLINK] = "SYS_SYMLINK", |
120 |
|
|
[CCS_SYS_RENAME] = "SYS_RENAME", |
121 |
|
|
[CCS_SYS_UNLINK] = "SYS_UNLINK", |
122 |
|
|
[CCS_SYS_CHMOD] = "SYS_CHMOD", |
123 |
|
|
[CCS_SYS_CHOWN] = "SYS_CHOWN", |
124 |
|
|
[CCS_SYS_IOCTL] = "SYS_IOCTL", |
125 |
|
|
[CCS_SYS_KEXEC_LOAD] = "SYS_KEXEC_LOAD", |
126 |
|
|
[CCS_SYS_PIVOT_ROOT] = "SYS_PIVOT_ROOT", |
127 |
|
|
[CCS_SYS_PTRACE] = "SYS_PTRACE", |
128 |
kumaneko |
2708 |
[CCS_CONCEAL_MOUNT] = "conceal_mount", |
129 |
kumaneko |
1015 |
}; |
130 |
|
|
|
131 |
kumaneko |
2254 |
static bool ccs_profile_entry_used[CCS_MAX_CONTROL_INDEX + |
132 |
kumaneko |
2282 |
CCS_MAX_CAPABILITY_INDEX + 1]; |
133 |
kumaneko |
2254 |
|
134 |
kumaneko |
1052 |
/* Profile table. Memory is allocated as needed. */ |
135 |
kumaneko |
2002 |
static struct ccs_profile { |
136 |
kumaneko |
111 |
unsigned int value[CCS_MAX_CONTROL_INDEX]; |
137 |
kumaneko |
2002 |
const struct ccs_path_info *comment; |
138 |
kumaneko |
2282 |
unsigned char capability_value[CCS_MAX_CAPABILITY_INDEX]; |
139 |
kumaneko |
2002 |
} *ccs_profile_ptr[MAX_PROFILES]; |
140 |
kumaneko |
111 |
|
141 |
kumaneko |
1052 |
/* Permit policy management by non-root user? */ |
142 |
kumaneko |
2002 |
static bool ccs_manage_by_non_root; |
143 |
kumaneko |
111 |
|
144 |
kumaneko |
1052 |
/* Utility functions. */ |
145 |
kumaneko |
111 |
|
146 |
kumaneko |
1052 |
/** |
147 |
kumaneko |
2282 |
* ccs_quiet_setup - Set CCS_VERBOSE=0 by default. |
148 |
kumaneko |
1052 |
* |
149 |
|
|
* @str: Unused. |
150 |
|
|
* |
151 |
|
|
* Returns 0. |
152 |
|
|
*/ |
153 |
kumaneko |
2002 |
static int __init ccs_quiet_setup(char *str) |
154 |
kumaneko |
111 |
{ |
155 |
kumaneko |
2282 |
ccs_control_array[CCS_VERBOSE].current_value = 0; |
156 |
kumaneko |
111 |
return 0; |
157 |
|
|
} |
158 |
|
|
|
159 |
kumaneko |
2282 |
__setup("CCS_QUIET", ccs_quiet_setup); |
160 |
kumaneko |
111 |
|
161 |
kumaneko |
1052 |
/** |
162 |
kumaneko |
2002 |
* ccs_is_byte_range - Check whether the string isa \ooo style octal value. |
163 |
kumaneko |
1052 |
* |
164 |
|
|
* @str: Pointer to the string. |
165 |
|
|
* |
166 |
|
|
* Returns true if @str is a \ooo style octal value, false otherwise. |
167 |
|
|
*/ |
168 |
kumaneko |
2002 |
static inline bool ccs_is_byte_range(const char *str) |
169 |
kumaneko |
1052 |
{ |
170 |
|
|
return *str >= '0' && *str++ <= '3' && |
171 |
|
|
*str >= '0' && *str++ <= '7' && |
172 |
|
|
*str >= '0' && *str <= '7'; |
173 |
|
|
} |
174 |
|
|
|
175 |
|
|
/** |
176 |
kumaneko |
2002 |
* ccs_is_decimal - Check whether the character is a decimal character. |
177 |
kumaneko |
1052 |
* |
178 |
|
|
* @c: The character to check. |
179 |
|
|
* |
180 |
|
|
* Returns true if @c is a decimal character, false otherwise. |
181 |
|
|
*/ |
182 |
kumaneko |
2002 |
static inline bool ccs_is_decimal(const char c) |
183 |
kumaneko |
1052 |
{ |
184 |
kumaneko |
1468 |
return c >= '0' && c <= '9'; |
185 |
kumaneko |
1052 |
} |
186 |
|
|
|
187 |
|
|
/** |
188 |
kumaneko |
2002 |
* ccs_is_hexadecimal - Check whether the character is a hexadecimal character. |
189 |
kumaneko |
1052 |
* |
190 |
|
|
* @c: The character to check. |
191 |
|
|
* |
192 |
|
|
* Returns true if @c is a hexadecimal character, false otherwise. |
193 |
|
|
*/ |
194 |
kumaneko |
2002 |
static inline bool ccs_is_hexadecimal(const char c) |
195 |
kumaneko |
1052 |
{ |
196 |
kumaneko |
1468 |
return (c >= '0' && c <= '9') || |
197 |
kumaneko |
1052 |
(c >= 'A' && c <= 'F') || |
198 |
kumaneko |
1468 |
(c >= 'a' && c <= 'f'); |
199 |
kumaneko |
1052 |
} |
200 |
|
|
|
201 |
|
|
/** |
202 |
kumaneko |
2002 |
* ccs_is_alphabet_char - Check whether the character is an alphabet. |
203 |
kumaneko |
1052 |
* |
204 |
|
|
* @c: The character to check. |
205 |
|
|
* |
206 |
|
|
* Returns true if @c is an alphabet character, false otherwise. |
207 |
|
|
*/ |
208 |
kumaneko |
2002 |
static inline bool ccs_is_alphabet_char(const char c) |
209 |
kumaneko |
1052 |
{ |
210 |
kumaneko |
1794 |
return (c >= 'A' && c <= 'Z') || (c >= 'a' && c <= 'z'); |
211 |
kumaneko |
1052 |
} |
212 |
|
|
|
213 |
|
|
/** |
214 |
kumaneko |
2002 |
* ccs_make_byte - Make byte value from three octal characters. |
215 |
kumaneko |
1064 |
* |
216 |
|
|
* @c1: The first character. |
217 |
|
|
* @c2: The second character. |
218 |
|
|
* @c3: The third character. |
219 |
|
|
* |
220 |
|
|
* Returns byte value. |
221 |
|
|
*/ |
222 |
kumaneko |
2002 |
static inline u8 ccs_make_byte(const u8 c1, const u8 c2, const u8 c3) |
223 |
kumaneko |
1064 |
{ |
224 |
|
|
return ((c1 - '0') << 6) + ((c2 - '0') << 3) + (c3 - '0'); |
225 |
|
|
} |
226 |
|
|
|
227 |
|
|
/** |
228 |
kumaneko |
2002 |
* ccs_str_starts - Check whether the given string starts with the given keyword. |
229 |
kumaneko |
1052 |
* |
230 |
|
|
* @src: Pointer to pointer to the string. |
231 |
|
|
* @find: Pointer to the keyword. |
232 |
|
|
* |
233 |
|
|
* Returns true if @src starts with @find, false otherwise. |
234 |
|
|
* |
235 |
|
|
* The @src is updated to point the first character after the @find |
236 |
kumaneko |
1064 |
* if @src starts with @find. |
237 |
kumaneko |
1052 |
*/ |
238 |
kumaneko |
2002 |
static bool ccs_str_starts(char **src, const char *find) |
239 |
kumaneko |
1052 |
{ |
240 |
|
|
const int len = strlen(find); |
241 |
|
|
char *tmp = *src; |
242 |
|
|
if (strncmp(tmp, find, len)) |
243 |
|
|
return false; |
244 |
|
|
tmp += len; |
245 |
|
|
*src = tmp; |
246 |
|
|
return true; |
247 |
|
|
} |
248 |
|
|
|
249 |
|
|
/** |
250 |
kumaneko |
2002 |
* ccs_normalize_line - Format string. |
251 |
kumaneko |
1052 |
* |
252 |
|
|
* @buffer: The line to normalize. |
253 |
|
|
* |
254 |
kumaneko |
111 |
* Leading and trailing whitespaces are removed. |
255 |
|
|
* Multiple whitespaces are packed into single space. |
256 |
kumaneko |
1052 |
* |
257 |
|
|
* Returns nothing. |
258 |
kumaneko |
111 |
*/ |
259 |
kumaneko |
2308 |
void ccs_normalize_line(unsigned char *buffer) |
260 |
kumaneko |
111 |
{ |
261 |
kumaneko |
1064 |
unsigned char *sp = buffer; |
262 |
|
|
unsigned char *dp = buffer; |
263 |
kumaneko |
1006 |
bool first = true; |
264 |
kumaneko |
1052 |
while (*sp && (*sp <= ' ' || *sp >= 127)) |
265 |
|
|
sp++; |
266 |
kumaneko |
111 |
while (*sp) { |
267 |
kumaneko |
1052 |
if (!first) |
268 |
|
|
*dp++ = ' '; |
269 |
kumaneko |
1006 |
first = false; |
270 |
kumaneko |
1052 |
while (*sp > ' ' && *sp < 127) |
271 |
|
|
*dp++ = *sp++; |
272 |
|
|
while (*sp && (*sp <= ' ' || *sp >= 127)) |
273 |
|
|
sp++; |
274 |
kumaneko |
111 |
} |
275 |
|
|
*dp = '\0'; |
276 |
|
|
} |
277 |
|
|
|
278 |
kumaneko |
1052 |
/** |
279 |
kumaneko |
1054 |
* ccs_is_correct_path - Validate a pathname. |
280 |
|
|
* @filename: The pathname to check. |
281 |
|
|
* @start_type: Should the pathname start with '/'? |
282 |
|
|
* 1 = must / -1 = must not / 0 = don't care |
283 |
|
|
* @pattern_type: Can the pathname contain a wildcard? |
284 |
|
|
* 1 = must / -1 = must not / 0 = don't care |
285 |
|
|
* @end_type: Should the pathname end with '/'? |
286 |
|
|
* 1 = must / -1 = must not / 0 = don't care |
287 |
kumaneko |
1052 |
* |
288 |
kumaneko |
1054 |
* Check whether the given filename follows the naming rules. |
289 |
kumaneko |
1052 |
* Returns true if @filename follows the naming rules, false otherwise. |
290 |
kumaneko |
111 |
*/ |
291 |
kumaneko |
1052 |
bool ccs_is_correct_path(const char *filename, const s8 start_type, |
292 |
kumaneko |
2577 |
const s8 pattern_type, const s8 end_type) |
293 |
kumaneko |
111 |
{ |
294 |
kumaneko |
1006 |
bool contains_pattern = false; |
295 |
kumaneko |
1064 |
unsigned char c; |
296 |
|
|
unsigned char d; |
297 |
|
|
unsigned char e; |
298 |
kumaneko |
111 |
const char *original_filename = filename; |
299 |
kumaneko |
1052 |
if (!filename) |
300 |
|
|
goto out; |
301 |
kumaneko |
111 |
c = *filename; |
302 |
|
|
if (start_type == 1) { /* Must start with '/' */ |
303 |
kumaneko |
1052 |
if (c != '/') |
304 |
|
|
goto out; |
305 |
kumaneko |
111 |
} else if (start_type == -1) { /* Must not start with '/' */ |
306 |
kumaneko |
1052 |
if (c == '/') |
307 |
|
|
goto out; |
308 |
kumaneko |
111 |
} |
309 |
kumaneko |
1052 |
if (c) |
310 |
kumaneko |
1795 |
c = *(filename + strlen(filename) - 1); |
311 |
kumaneko |
111 |
if (end_type == 1) { /* Must end with '/' */ |
312 |
kumaneko |
1052 |
if (c != '/') |
313 |
|
|
goto out; |
314 |
kumaneko |
111 |
} else if (end_type == -1) { /* Must not end with '/' */ |
315 |
kumaneko |
1052 |
if (c == '/') |
316 |
|
|
goto out; |
317 |
kumaneko |
111 |
} |
318 |
kumaneko |
1747 |
while (1) { |
319 |
|
|
c = *filename++; |
320 |
|
|
if (!c) |
321 |
|
|
break; |
322 |
kumaneko |
111 |
if (c == '\\') { |
323 |
kumaneko |
1747 |
c = *filename++; |
324 |
|
|
switch (c) { |
325 |
kumaneko |
111 |
case '\\': /* "\\" */ |
326 |
|
|
continue; |
327 |
|
|
case '$': /* "\$" */ |
328 |
|
|
case '+': /* "\+" */ |
329 |
|
|
case '?': /* "\?" */ |
330 |
|
|
case '*': /* "\*" */ |
331 |
|
|
case '@': /* "\@" */ |
332 |
|
|
case 'x': /* "\x" */ |
333 |
|
|
case 'X': /* "\X" */ |
334 |
|
|
case 'a': /* "\a" */ |
335 |
|
|
case 'A': /* "\A" */ |
336 |
kumaneko |
206 |
case '-': /* "\-" */ |
337 |
kumaneko |
1052 |
if (pattern_type == -1) |
338 |
|
|
break; /* Must not contain pattern */ |
339 |
kumaneko |
1006 |
contains_pattern = true; |
340 |
kumaneko |
111 |
continue; |
341 |
|
|
case '0': /* "\ooo" */ |
342 |
|
|
case '1': |
343 |
|
|
case '2': |
344 |
|
|
case '3': |
345 |
kumaneko |
1052 |
d = *filename++; |
346 |
|
|
if (d < '0' || d > '7') |
347 |
|
|
break; |
348 |
|
|
e = *filename++; |
349 |
|
|
if (e < '0' || e > '7') |
350 |
|
|
break; |
351 |
kumaneko |
2002 |
c = ccs_make_byte(c, d, e); |
352 |
kumaneko |
1052 |
if (c && (c <= ' ' || c >= 127)) |
353 |
|
|
continue; /* pattern is not \000 */ |
354 |
kumaneko |
111 |
} |
355 |
|
|
goto out; |
356 |
|
|
} else if (c <= ' ' || c >= 127) { |
357 |
|
|
goto out; |
358 |
|
|
} |
359 |
|
|
} |
360 |
|
|
if (pattern_type == 1) { /* Must contain pattern */ |
361 |
kumaneko |
1052 |
if (!contains_pattern) |
362 |
|
|
goto out; |
363 |
kumaneko |
111 |
} |
364 |
kumaneko |
1006 |
return true; |
365 |
kumaneko |
111 |
out: |
366 |
kumaneko |
2577 |
printk(KERN_DEBUG "Invalid pathname '%s'\n", original_filename); |
367 |
kumaneko |
1006 |
return false; |
368 |
kumaneko |
111 |
} |
369 |
|
|
|
370 |
kumaneko |
1052 |
/** |
371 |
kumaneko |
1054 |
* ccs_is_correct_domain - Check whether the given domainname follows the naming rules. |
372 |
|
|
* @domainname: The domainname to check. |
373 |
kumaneko |
1052 |
* |
374 |
|
|
* Returns true if @domainname follows the naming rules, false otherwise. |
375 |
kumaneko |
111 |
*/ |
376 |
kumaneko |
2577 |
bool ccs_is_correct_domain(const unsigned char *domainname) |
377 |
kumaneko |
111 |
{ |
378 |
kumaneko |
1064 |
unsigned char c; |
379 |
|
|
unsigned char d; |
380 |
|
|
unsigned char e; |
381 |
kumaneko |
111 |
const char *org_domainname = domainname; |
382 |
kumaneko |
1052 |
if (!domainname || strncmp(domainname, ROOT_NAME, ROOT_NAME_LEN)) |
383 |
|
|
goto out; |
384 |
kumaneko |
111 |
domainname += ROOT_NAME_LEN; |
385 |
kumaneko |
1052 |
if (!*domainname) |
386 |
|
|
return true; |
387 |
kumaneko |
111 |
do { |
388 |
kumaneko |
1052 |
if (*domainname++ != ' ') |
389 |
|
|
goto out; |
390 |
|
|
if (*domainname++ != '/') |
391 |
|
|
goto out; |
392 |
kumaneko |
1747 |
while (1) { |
393 |
|
|
c = *domainname; |
394 |
|
|
if (!c || c == ' ') |
395 |
|
|
break; |
396 |
kumaneko |
111 |
domainname++; |
397 |
|
|
if (c == '\\') { |
398 |
kumaneko |
1052 |
c = *domainname++; |
399 |
|
|
switch ((c)) { |
400 |
kumaneko |
111 |
case '\\': /* "\\" */ |
401 |
|
|
continue; |
402 |
|
|
case '0': /* "\ooo" */ |
403 |
|
|
case '1': |
404 |
|
|
case '2': |
405 |
|
|
case '3': |
406 |
kumaneko |
1052 |
d = *domainname++; |
407 |
|
|
if (d < '0' || d > '7') |
408 |
|
|
break; |
409 |
|
|
e = *domainname++; |
410 |
|
|
if (e < '0' || e > '7') |
411 |
|
|
break; |
412 |
kumaneko |
2002 |
c = ccs_make_byte(c, d, e); |
413 |
kumaneko |
1052 |
if (c && (c <= ' ' || c >= 127)) |
414 |
|
|
/* pattern is not \000 */ |
415 |
|
|
continue; |
416 |
kumaneko |
111 |
} |
417 |
|
|
goto out; |
418 |
|
|
} else if (c < ' ' || c >= 127) { |
419 |
|
|
goto out; |
420 |
|
|
} |
421 |
|
|
} |
422 |
|
|
} while (*domainname); |
423 |
kumaneko |
1006 |
return true; |
424 |
kumaneko |
111 |
out: |
425 |
kumaneko |
2577 |
printk(KERN_DEBUG "Invalid domainname '%s'\n", org_domainname); |
426 |
kumaneko |
1006 |
return false; |
427 |
kumaneko |
111 |
} |
428 |
|
|
|
429 |
kumaneko |
1052 |
/** |
430 |
|
|
* ccs_is_domain_def - Check whether the given token can be a domainname. |
431 |
|
|
* |
432 |
|
|
* @buffer: The token to check. |
433 |
|
|
* |
434 |
|
|
* Returns true if @buffer possibly be a domainname, false otherwise. |
435 |
|
|
*/ |
436 |
|
|
bool ccs_is_domain_def(const unsigned char *buffer) |
437 |
kumaneko |
461 |
{ |
438 |
kumaneko |
1052 |
return !strncmp(buffer, ROOT_NAME, ROOT_NAME_LEN); |
439 |
kumaneko |
461 |
} |
440 |
|
|
|
441 |
kumaneko |
1052 |
/** |
442 |
|
|
* ccs_find_domain - Find a domain by the given name. |
443 |
|
|
* |
444 |
kumaneko |
1054 |
* @domainname: The domainname to find. |
445 |
kumaneko |
1052 |
* |
446 |
kumaneko |
2690 |
* Returns pointer to "struct ccs_domain_info" if found, NULL otherwise. |
447 |
|
|
* |
448 |
|
|
* Caller holds srcu_read_lock(&ccs_ss). |
449 |
kumaneko |
1052 |
*/ |
450 |
kumaneko |
2690 |
struct ccs_domain_info *ccs_find_domain(const char *domainname) |
451 |
kumaneko |
461 |
{ |
452 |
kumaneko |
2282 |
struct ccs_domain_info *domain; |
453 |
kumaneko |
2002 |
struct ccs_path_info name; |
454 |
kumaneko |
1052 |
name.name = domainname; |
455 |
|
|
ccs_fill_path_info(&name); |
456 |
kumaneko |
2690 |
list_for_each_entry_rcu(domain, &ccs_domain_list, list) { |
457 |
kumaneko |
2692 |
if (!domain->is_deleted && |
458 |
|
|
!ccs_pathcmp(&name, domain->domainname)) |
459 |
|
|
return domain; |
460 |
kumaneko |
461 |
} |
461 |
kumaneko |
2692 |
return NULL; |
462 |
kumaneko |
461 |
} |
463 |
|
|
|
464 |
kumaneko |
1052 |
/** |
465 |
kumaneko |
2002 |
* ccs_path_depth - Evaluate the number of '/' in a string. |
466 |
kumaneko |
1052 |
* |
467 |
|
|
* @pathname: The string to evaluate. |
468 |
|
|
* |
469 |
|
|
* Returns path depth of the string. |
470 |
|
|
* |
471 |
|
|
* I score 2 for each of the '/' in the @pathname |
472 |
|
|
* and score 1 if the @pathname ends with '/'. |
473 |
|
|
*/ |
474 |
kumaneko |
2002 |
static int ccs_path_depth(const char *pathname) |
475 |
kumaneko |
111 |
{ |
476 |
|
|
int i = 0; |
477 |
|
|
if (pathname) { |
478 |
kumaneko |
1795 |
const char *ep = pathname + strlen(pathname); |
479 |
kumaneko |
111 |
if (pathname < ep--) { |
480 |
kumaneko |
1052 |
if (*ep != '/') |
481 |
|
|
i++; |
482 |
|
|
while (pathname <= ep) |
483 |
|
|
if (*ep-- == '/') |
484 |
|
|
i += 2; |
485 |
kumaneko |
111 |
} |
486 |
|
|
} |
487 |
|
|
return i; |
488 |
|
|
} |
489 |
|
|
|
490 |
kumaneko |
1052 |
/** |
491 |
kumaneko |
2002 |
* ccs_const_part_length - Evaluate the initial length without a pattern in a token. |
492 |
kumaneko |
1052 |
* |
493 |
|
|
* @filename: The string to evaluate. |
494 |
|
|
* |
495 |
kumaneko |
1064 |
* Returns the initial length without a pattern in @filename. |
496 |
kumaneko |
1052 |
*/ |
497 |
kumaneko |
2002 |
static int ccs_const_part_length(const char *filename) |
498 |
kumaneko |
111 |
{ |
499 |
kumaneko |
1052 |
char c; |
500 |
kumaneko |
111 |
int len = 0; |
501 |
kumaneko |
1052 |
if (!filename) |
502 |
|
|
return 0; |
503 |
kumaneko |
1747 |
while (1) { |
504 |
|
|
c = *filename++; |
505 |
|
|
if (!c) |
506 |
|
|
break; |
507 |
kumaneko |
1052 |
if (c != '\\') { |
508 |
|
|
len++; |
509 |
|
|
continue; |
510 |
kumaneko |
111 |
} |
511 |
kumaneko |
1052 |
c = *filename++; |
512 |
|
|
switch (c) { |
513 |
|
|
case '\\': /* "\\" */ |
514 |
|
|
len += 2; |
515 |
|
|
continue; |
516 |
|
|
case '0': /* "\ooo" */ |
517 |
|
|
case '1': |
518 |
|
|
case '2': |
519 |
|
|
case '3': |
520 |
|
|
c = *filename++; |
521 |
|
|
if (c < '0' || c > '7') |
522 |
|
|
break; |
523 |
|
|
c = *filename++; |
524 |
|
|
if (c < '0' || c > '7') |
525 |
|
|
break; |
526 |
|
|
len += 4; |
527 |
|
|
continue; |
528 |
|
|
} |
529 |
|
|
break; |
530 |
kumaneko |
111 |
} |
531 |
|
|
return len; |
532 |
|
|
} |
533 |
|
|
|
534 |
kumaneko |
1052 |
/** |
535 |
kumaneko |
2002 |
* ccs_fill_path_info - Fill in "struct ccs_path_info" members. |
536 |
kumaneko |
1052 |
* |
537 |
kumaneko |
2002 |
* @ptr: Pointer to "struct ccs_path_info" to fill in. |
538 |
kumaneko |
1052 |
* |
539 |
kumaneko |
2002 |
* The caller sets "struct ccs_path_info"->name. |
540 |
kumaneko |
1052 |
*/ |
541 |
kumaneko |
2002 |
void ccs_fill_path_info(struct ccs_path_info *ptr) |
542 |
kumaneko |
111 |
{ |
543 |
|
|
const char *name = ptr->name; |
544 |
|
|
const int len = strlen(name); |
545 |
|
|
ptr->total_len = len; |
546 |
kumaneko |
2002 |
ptr->const_len = ccs_const_part_length(name); |
547 |
kumaneko |
111 |
ptr->is_dir = len && (name[len - 1] == '/'); |
548 |
|
|
ptr->is_patterned = (ptr->const_len < len); |
549 |
|
|
ptr->hash = full_name_hash(name, len); |
550 |
kumaneko |
2002 |
ptr->depth = ccs_path_depth(name); |
551 |
kumaneko |
111 |
} |
552 |
|
|
|
553 |
kumaneko |
1052 |
/** |
554 |
kumaneko |
2039 |
* ccs_file_matches_pattern2 - Pattern matching without '/' character |
555 |
kumaneko |
1052 |
* and "\-" pattern. |
556 |
|
|
* |
557 |
|
|
* @filename: The start of string to check. |
558 |
|
|
* @filename_end: The end of string to check. |
559 |
|
|
* @pattern: The start of pattern to compare. |
560 |
|
|
* @pattern_end: The end of pattern to compare. |
561 |
|
|
* |
562 |
|
|
* Returns true if @filename matches @pattern, false otherwise. |
563 |
|
|
*/ |
564 |
kumaneko |
2039 |
static bool ccs_file_matches_pattern2(const char *filename, |
565 |
|
|
const char *filename_end, |
566 |
|
|
const char *pattern, |
567 |
|
|
const char *pattern_end) |
568 |
kumaneko |
111 |
{ |
569 |
|
|
while (filename < filename_end && pattern < pattern_end) { |
570 |
kumaneko |
1052 |
char c; |
571 |
kumaneko |
111 |
if (*pattern != '\\') { |
572 |
kumaneko |
1052 |
if (*filename++ != *pattern++) |
573 |
|
|
return false; |
574 |
|
|
continue; |
575 |
|
|
} |
576 |
|
|
c = *filename; |
577 |
|
|
pattern++; |
578 |
|
|
switch (*pattern) { |
579 |
kumaneko |
1064 |
int i; |
580 |
|
|
int j; |
581 |
kumaneko |
1052 |
case '?': |
582 |
|
|
if (c == '/') { |
583 |
|
|
return false; |
584 |
|
|
} else if (c == '\\') { |
585 |
|
|
if (filename[1] == '\\') |
586 |
|
|
filename++; |
587 |
kumaneko |
2002 |
else if (ccs_is_byte_range(filename + 1)) |
588 |
kumaneko |
1052 |
filename += 3; |
589 |
|
|
else |
590 |
kumaneko |
1006 |
return false; |
591 |
kumaneko |
1052 |
} |
592 |
|
|
break; |
593 |
|
|
case '\\': |
594 |
|
|
if (c != '\\') |
595 |
|
|
return false; |
596 |
|
|
if (*++filename != '\\') |
597 |
|
|
return false; |
598 |
|
|
break; |
599 |
|
|
case '+': |
600 |
kumaneko |
2002 |
if (!ccs_is_decimal(c)) |
601 |
kumaneko |
1052 |
return false; |
602 |
|
|
break; |
603 |
|
|
case 'x': |
604 |
kumaneko |
2002 |
if (!ccs_is_hexadecimal(c)) |
605 |
kumaneko |
1052 |
return false; |
606 |
|
|
break; |
607 |
|
|
case 'a': |
608 |
kumaneko |
2002 |
if (!ccs_is_alphabet_char(c)) |
609 |
kumaneko |
1052 |
return false; |
610 |
|
|
break; |
611 |
|
|
case '0': |
612 |
|
|
case '1': |
613 |
|
|
case '2': |
614 |
|
|
case '3': |
615 |
kumaneko |
2002 |
if (c == '\\' && ccs_is_byte_range(filename + 1) |
616 |
kumaneko |
1052 |
&& strncmp(filename + 1, pattern, 3) == 0) { |
617 |
|
|
filename += 3; |
618 |
|
|
pattern += 2; |
619 |
kumaneko |
111 |
break; |
620 |
kumaneko |
1052 |
} |
621 |
|
|
return false; /* Not matched. */ |
622 |
|
|
case '*': |
623 |
|
|
case '@': |
624 |
|
|
for (i = 0; i <= filename_end - filename; i++) { |
625 |
kumaneko |
2039 |
if (ccs_file_matches_pattern2(filename + i, |
626 |
|
|
filename_end, |
627 |
|
|
pattern + 1, |
628 |
|
|
pattern_end)) |
629 |
kumaneko |
1052 |
return true; |
630 |
|
|
c = filename[i]; |
631 |
|
|
if (c == '.' && *pattern == '@') |
632 |
kumaneko |
111 |
break; |
633 |
kumaneko |
1052 |
if (c != '\\') |
634 |
|
|
continue; |
635 |
|
|
if (filename[i + 1] == '\\') |
636 |
|
|
i++; |
637 |
kumaneko |
2002 |
else if (ccs_is_byte_range(filename + i + 1)) |
638 |
kumaneko |
1052 |
i += 3; |
639 |
|
|
else |
640 |
|
|
break; /* Bad pattern. */ |
641 |
kumaneko |
111 |
} |
642 |
kumaneko |
1052 |
return false; /* Not matched. */ |
643 |
|
|
default: |
644 |
|
|
j = 0; |
645 |
|
|
c = *pattern; |
646 |
|
|
if (c == '$') { |
647 |
kumaneko |
2002 |
while (ccs_is_decimal(filename[j])) |
648 |
kumaneko |
1052 |
j++; |
649 |
|
|
} else if (c == 'X') { |
650 |
kumaneko |
2002 |
while (ccs_is_hexadecimal(filename[j])) |
651 |
kumaneko |
1052 |
j++; |
652 |
|
|
} else if (c == 'A') { |
653 |
kumaneko |
2002 |
while (ccs_is_alphabet_char(filename[j])) |
654 |
kumaneko |
1052 |
j++; |
655 |
|
|
} |
656 |
|
|
for (i = 1; i <= j; i++) { |
657 |
kumaneko |
2039 |
if (ccs_file_matches_pattern2(filename + i, |
658 |
|
|
filename_end, |
659 |
|
|
pattern + 1, |
660 |
|
|
pattern_end)) |
661 |
kumaneko |
1052 |
return true; |
662 |
|
|
} |
663 |
|
|
return false; /* Not matched or bad pattern. */ |
664 |
kumaneko |
111 |
} |
665 |
kumaneko |
1052 |
filename++; |
666 |
|
|
pattern++; |
667 |
kumaneko |
111 |
} |
668 |
kumaneko |
1052 |
while (*pattern == '\\' && |
669 |
|
|
(*(pattern + 1) == '*' || *(pattern + 1) == '@')) |
670 |
|
|
pattern += 2; |
671 |
kumaneko |
1468 |
return filename == filename_end && pattern == pattern_end; |
672 |
kumaneko |
111 |
} |
673 |
|
|
|
674 |
kumaneko |
1052 |
/** |
675 |
kumaneko |
2039 |
* ccs_file_matches_pattern - Pattern matching without without '/' character. |
676 |
kumaneko |
1052 |
* |
677 |
|
|
* @filename: The start of string to check. |
678 |
|
|
* @filename_end: The end of string to check. |
679 |
|
|
* @pattern: The start of pattern to compare. |
680 |
|
|
* @pattern_end: The end of pattern to compare. |
681 |
|
|
* |
682 |
|
|
* Returns true if @filename matches @pattern, false otherwise. |
683 |
|
|
*/ |
684 |
kumaneko |
2039 |
static bool ccs_file_matches_pattern(const char *filename, |
685 |
|
|
const char *filename_end, |
686 |
|
|
const char *pattern, |
687 |
|
|
const char *pattern_end) |
688 |
kumaneko |
206 |
{ |
689 |
|
|
const char *pattern_start = pattern; |
690 |
kumaneko |
1006 |
bool first = true; |
691 |
|
|
bool result; |
692 |
kumaneko |
206 |
while (pattern < pattern_end - 1) { |
693 |
kumaneko |
1052 |
/* Split at "\-" pattern. */ |
694 |
|
|
if (*pattern++ != '\\' || *pattern++ != '-') |
695 |
|
|
continue; |
696 |
kumaneko |
2039 |
result = ccs_file_matches_pattern2(filename, filename_end, |
697 |
kumaneko |
2040 |
pattern_start, pattern - 2); |
698 |
kumaneko |
1052 |
if (first) |
699 |
|
|
result = !result; |
700 |
|
|
if (result) |
701 |
|
|
return false; |
702 |
kumaneko |
1006 |
first = false; |
703 |
kumaneko |
206 |
pattern_start = pattern; |
704 |
|
|
} |
705 |
kumaneko |
2039 |
result = ccs_file_matches_pattern2(filename, filename_end, |
706 |
|
|
pattern_start, pattern_end); |
707 |
kumaneko |
206 |
return first ? result : !result; |
708 |
|
|
} |
709 |
|
|
|
710 |
kumaneko |
1052 |
/** |
711 |
kumaneko |
1054 |
* ccs_path_matches_pattern - Check whether the given filename matches the given pattern. |
712 |
kumaneko |
1052 |
* @filename: The filename to check. |
713 |
|
|
* @pattern: The pattern to compare. |
714 |
kumaneko |
111 |
* |
715 |
kumaneko |
1052 |
* Returns true if matches, false otherwise. |
716 |
|
|
* |
717 |
|
|
* The following patterns are available. |
718 |
|
|
* \\ \ itself. |
719 |
|
|
* \ooo Octal representation of a byte. |
720 |
|
|
* \* More than or equals to 0 character other than '/'. |
721 |
|
|
* \@ More than or equals to 0 character other than '/' or '.'. |
722 |
|
|
* \? 1 byte character other than '/'. |
723 |
|
|
* \$ More than or equals to 1 decimal digit. |
724 |
|
|
* \+ 1 decimal digit. |
725 |
|
|
* \X More than or equals to 1 hexadecimal digit. |
726 |
|
|
* \x 1 hexadecimal digit. |
727 |
|
|
* \A More than or equals to 1 alphabet character. |
728 |
|
|
* \a 1 alphabet character. |
729 |
|
|
* \- Subtraction operator. |
730 |
kumaneko |
111 |
*/ |
731 |
kumaneko |
2002 |
bool ccs_path_matches_pattern(const struct ccs_path_info *filename, |
732 |
|
|
const struct ccs_path_info *pattern) |
733 |
kumaneko |
111 |
{ |
734 |
kumaneko |
1052 |
/* |
735 |
|
|
if (!filename || !pattern) |
736 |
|
|
return false; |
737 |
|
|
*/ |
738 |
|
|
const char *f = filename->name; |
739 |
|
|
const char *p = pattern->name; |
740 |
|
|
const int len = pattern->const_len; |
741 |
|
|
/* If @pattern doesn't contain pattern, I can use strcmp(). */ |
742 |
|
|
if (!pattern->is_patterned) |
743 |
|
|
return !ccs_pathcmp(filename, pattern); |
744 |
|
|
/* Dont compare if the number of '/' differs. */ |
745 |
|
|
if (filename->depth != pattern->depth) |
746 |
|
|
return false; |
747 |
|
|
/* Compare the initial length without patterns. */ |
748 |
|
|
if (strncmp(f, p, len)) |
749 |
|
|
return false; |
750 |
|
|
f += len; |
751 |
|
|
p += len; |
752 |
|
|
/* Main loop. Compare each directory component. */ |
753 |
|
|
while (*f && *p) { |
754 |
|
|
const char *f_delimiter = strchr(f, '/'); |
755 |
|
|
const char *p_delimiter = strchr(p, '/'); |
756 |
|
|
if (!f_delimiter) |
757 |
kumaneko |
1795 |
f_delimiter = f + strlen(f); |
758 |
kumaneko |
1052 |
if (!p_delimiter) |
759 |
kumaneko |
1795 |
p_delimiter = p + strlen(p); |
760 |
kumaneko |
2040 |
if (!ccs_file_matches_pattern(f, f_delimiter, p, p_delimiter)) |
761 |
kumaneko |
1052 |
return false; |
762 |
|
|
f = f_delimiter; |
763 |
|
|
if (*f) |
764 |
|
|
f++; |
765 |
|
|
p = p_delimiter; |
766 |
|
|
if (*p) |
767 |
|
|
p++; |
768 |
kumaneko |
111 |
} |
769 |
kumaneko |
1052 |
/* Ignore trailing "\*" and "\@" in @pattern. */ |
770 |
|
|
while (*p == '\\' && |
771 |
|
|
(*(p + 1) == '*' || *(p + 1) == '@')) |
772 |
|
|
p += 2; |
773 |
kumaneko |
1468 |
return !*f && !*p; |
774 |
kumaneko |
111 |
} |
775 |
|
|
|
776 |
kumaneko |
1052 |
/** |
777 |
|
|
* ccs_io_printf - Transactional printf() to "struct ccs_io_buffer" structure. |
778 |
|
|
* |
779 |
|
|
* @head: Pointer to "struct ccs_io_buffer". |
780 |
|
|
* @fmt: The printf()'s format string, followed by parameters. |
781 |
|
|
* |
782 |
|
|
* Returns true on success, false otherwise. |
783 |
|
|
* |
784 |
|
|
* The snprintf() will truncate, but ccs_io_printf() won't. |
785 |
kumaneko |
111 |
*/ |
786 |
kumaneko |
1052 |
bool ccs_io_printf(struct ccs_io_buffer *head, const char *fmt, ...) |
787 |
kumaneko |
111 |
{ |
788 |
|
|
va_list args; |
789 |
kumaneko |
1064 |
int len; |
790 |
|
|
int pos = head->read_avail; |
791 |
|
|
int size = head->readbuf_size - pos; |
792 |
kumaneko |
1052 |
if (size <= 0) |
793 |
|
|
return false; |
794 |
kumaneko |
111 |
va_start(args, fmt); |
795 |
|
|
len = vsnprintf(head->read_buf + pos, size, fmt, args); |
796 |
|
|
va_end(args); |
797 |
kumaneko |
1052 |
if (pos + len >= head->readbuf_size) |
798 |
|
|
return false; |
799 |
kumaneko |
111 |
head->read_avail += len; |
800 |
kumaneko |
1052 |
return true; |
801 |
kumaneko |
111 |
} |
802 |
|
|
|
803 |
kumaneko |
1052 |
/** |
804 |
|
|
* ccs_get_exe - Get ccs_realpath() of current process. |
805 |
|
|
* |
806 |
|
|
* Returns the ccs_realpath() of current process on success, NULL otherwise. |
807 |
|
|
* |
808 |
kumaneko |
2711 |
* This function uses kzalloc(), so the caller must kfree() |
809 |
kumaneko |
1052 |
* if this function didn't return NULL. |
810 |
kumaneko |
111 |
*/ |
811 |
kumaneko |
1052 |
const char *ccs_get_exe(void) |
812 |
kumaneko |
111 |
{ |
813 |
kumaneko |
737 |
struct mm_struct *mm = current->mm; |
814 |
|
|
struct vm_area_struct *vma; |
815 |
|
|
const char *cp = NULL; |
816 |
kumaneko |
1052 |
if (!mm) |
817 |
|
|
return NULL; |
818 |
kumaneko |
737 |
down_read(&mm->mmap_sem); |
819 |
|
|
for (vma = mm->mmap; vma; vma = vma->vm_next) { |
820 |
|
|
if ((vma->vm_flags & VM_EXECUTABLE) && vma->vm_file) { |
821 |
kumaneko |
1052 |
cp = ccs_realpath_from_dentry(vma->vm_file->f_dentry, |
822 |
|
|
vma->vm_file->f_vfsmnt); |
823 |
kumaneko |
737 |
break; |
824 |
kumaneko |
111 |
} |
825 |
|
|
} |
826 |
kumaneko |
737 |
up_read(&mm->mmap_sem); |
827 |
|
|
return cp; |
828 |
kumaneko |
111 |
} |
829 |
|
|
|
830 |
kumaneko |
1052 |
/** |
831 |
|
|
* ccs_get_msg - Get warning message. |
832 |
|
|
* |
833 |
|
|
* @is_enforce: Is it enforcing mode? |
834 |
|
|
* |
835 |
|
|
* Returns "ERROR" or "WARNING". |
836 |
|
|
*/ |
837 |
|
|
const char *ccs_get_msg(const bool is_enforce) |
838 |
kumaneko |
111 |
{ |
839 |
kumaneko |
1052 |
if (is_enforce) |
840 |
|
|
return "ERROR"; |
841 |
|
|
else |
842 |
|
|
return "WARNING"; |
843 |
kumaneko |
111 |
} |
844 |
|
|
|
845 |
kumaneko |
1052 |
/** |
846 |
kumaneko |
1657 |
* ccs_can_sleep - Check whether it is permitted to do operations that may sleep. |
847 |
kumaneko |
1052 |
* |
848 |
|
|
* Returns true if it is permitted to do operations that may sleep, |
849 |
|
|
* false otherwise. |
850 |
|
|
* |
851 |
|
|
* TOMOYO Linux supports interactive enforcement that lets processes |
852 |
|
|
* wait for the administrator's decision. |
853 |
|
|
* All hooks but the one for ccs_may_autobind() are inserted where |
854 |
|
|
* it is permitted to do operations that may sleep. |
855 |
|
|
* Thus, this warning should not happen. |
856 |
|
|
*/ |
857 |
kumaneko |
1657 |
bool ccs_can_sleep(void) |
858 |
kumaneko |
899 |
{ |
859 |
kumaneko |
1052 |
static u8 count = 20; |
860 |
|
|
if (likely(!in_interrupt())) |
861 |
|
|
return true; |
862 |
|
|
if (count) { |
863 |
|
|
count--; |
864 |
|
|
printk(KERN_ERR "BUG: sleeping function called " |
865 |
|
|
"from invalid context.\n"); |
866 |
|
|
dump_stack(); |
867 |
kumaneko |
899 |
} |
868 |
kumaneko |
1052 |
return false; |
869 |
kumaneko |
899 |
} |
870 |
|
|
|
871 |
kumaneko |
1052 |
/** |
872 |
|
|
* ccs_check_flags - Check mode for specified functionality. |
873 |
|
|
* |
874 |
kumaneko |
2282 |
* @domain: Pointer to "struct ccs_domain_info". NULL for ccs_current_domain(). |
875 |
kumaneko |
1657 |
* @index: The functionality to check mode. |
876 |
kumaneko |
1052 |
* |
877 |
|
|
* Returns the mode of specified functionality. |
878 |
|
|
*/ |
879 |
kumaneko |
2282 |
unsigned int ccs_check_flags(const struct ccs_domain_info *domain, |
880 |
|
|
const u8 index) |
881 |
kumaneko |
1015 |
{ |
882 |
kumaneko |
1657 |
u8 profile; |
883 |
|
|
if (!domain) |
884 |
kumaneko |
2282 |
domain = ccs_current_domain(); |
885 |
kumaneko |
1657 |
profile = domain->profile; |
886 |
kumaneko |
2040 |
return ccs_policy_loaded && index < CCS_MAX_CONTROL_INDEX |
887 |
kumaneko |
1657 |
#if MAX_PROFILES != 256 |
888 |
|
|
&& profile < MAX_PROFILES |
889 |
|
|
#endif |
890 |
kumaneko |
2002 |
&& ccs_profile_ptr[profile] ? |
891 |
|
|
ccs_profile_ptr[profile]->value[index] : 0; |
892 |
kumaneko |
1015 |
} |
893 |
|
|
|
894 |
kumaneko |
1052 |
/** |
895 |
|
|
* ccs_check_capability_flags - Check mode for specified capability. |
896 |
|
|
* |
897 |
kumaneko |
2282 |
* @domain: Pointer to "struct ccs_domain_info". NULL for ccs_current_domain(). |
898 |
kumaneko |
1657 |
* @index: The capability to check mode. |
899 |
kumaneko |
1052 |
* |
900 |
|
|
* Returns the mode of specified capability. |
901 |
|
|
*/ |
902 |
kumaneko |
2282 |
static u8 ccs_check_capability_flags(const struct ccs_domain_info *domain, |
903 |
kumaneko |
1657 |
const u8 index) |
904 |
kumaneko |
1015 |
{ |
905 |
kumaneko |
1657 |
const u8 profile = domain ? domain->profile : |
906 |
kumaneko |
2282 |
ccs_current_domain()->profile; |
907 |
|
|
return ccs_policy_loaded && index < CCS_MAX_CAPABILITY_INDEX |
908 |
kumaneko |
1015 |
#if MAX_PROFILES != 256 |
909 |
|
|
&& profile < MAX_PROFILES |
910 |
|
|
#endif |
911 |
kumaneko |
2002 |
&& ccs_profile_ptr[profile] ? |
912 |
|
|
ccs_profile_ptr[profile]->capability_value[index] : 0; |
913 |
kumaneko |
1015 |
} |
914 |
|
|
|
915 |
kumaneko |
1052 |
/** |
916 |
|
|
* ccs_cap2keyword - Convert capability operation to capability name. |
917 |
|
|
* |
918 |
|
|
* @operation: The capability index. |
919 |
|
|
* |
920 |
|
|
* Returns the name of the specified capability's name. |
921 |
|
|
*/ |
922 |
|
|
const char *ccs_cap2keyword(const u8 operation) |
923 |
kumaneko |
1015 |
{ |
924 |
kumaneko |
2282 |
return operation < CCS_MAX_CAPABILITY_INDEX |
925 |
kumaneko |
2002 |
? ccs_capability_control_keyword[operation] : NULL; |
926 |
kumaneko |
1015 |
} |
927 |
|
|
|
928 |
kumaneko |
1052 |
/** |
929 |
kumaneko |
1657 |
* ccs_init_request_info - Initialize "struct ccs_request_info" members. |
930 |
|
|
* |
931 |
|
|
* @r: Pointer to "struct ccs_request_info" to initialize. |
932 |
kumaneko |
2282 |
* @domain: Pointer to "struct ccs_domain_info". NULL for ccs_current_domain(). |
933 |
kumaneko |
1657 |
* @index: Index number of functionality. |
934 |
|
|
*/ |
935 |
|
|
void ccs_init_request_info(struct ccs_request_info *r, |
936 |
kumaneko |
2282 |
struct ccs_domain_info *domain, const u8 index) |
937 |
kumaneko |
1657 |
{ |
938 |
|
|
memset(r, 0, sizeof(*r)); |
939 |
|
|
if (!domain) |
940 |
kumaneko |
2282 |
domain = ccs_current_domain(); |
941 |
kumaneko |
2690 |
r->domain = domain; |
942 |
kumaneko |
1657 |
r->profile = domain->profile; |
943 |
|
|
if (index < CCS_MAX_CONTROL_INDEX) |
944 |
|
|
r->mode = ccs_check_flags(domain, index); |
945 |
|
|
else |
946 |
|
|
r->mode = ccs_check_capability_flags(domain, index |
947 |
|
|
- CCS_MAX_CONTROL_INDEX); |
948 |
|
|
} |
949 |
|
|
|
950 |
|
|
/** |
951 |
kumaneko |
1052 |
* ccs_verbose_mode - Check whether TOMOYO is verbose mode. |
952 |
|
|
* |
953 |
kumaneko |
2282 |
* @domain: Pointer to "struct ccs_domain_info". NULL for ccs_current_domain(). |
954 |
kumaneko |
1657 |
* |
955 |
kumaneko |
1052 |
* Returns true if domain policy violation warning should be printed to |
956 |
|
|
* console. |
957 |
|
|
*/ |
958 |
kumaneko |
2282 |
bool ccs_verbose_mode(const struct ccs_domain_info *domain) |
959 |
kumaneko |
111 |
{ |
960 |
kumaneko |
2282 |
return ccs_check_flags(domain, CCS_VERBOSE) != 0; |
961 |
kumaneko |
111 |
} |
962 |
|
|
|
963 |
kumaneko |
1052 |
/** |
964 |
kumaneko |
2209 |
* ccs_domain_quota_ok - Check for domain's quota. |
965 |
kumaneko |
1052 |
* |
966 |
kumaneko |
2282 |
* @domain: Pointer to "struct ccs_domain_info". |
967 |
kumaneko |
1052 |
* |
968 |
|
|
* Returns true if the domain is not exceeded quota, false otherwise. |
969 |
kumaneko |
2690 |
* |
970 |
|
|
* Caller holds srcu_read_lock(&ccs_ss). |
971 |
kumaneko |
1052 |
*/ |
972 |
kumaneko |
2282 |
bool ccs_domain_quota_ok(struct ccs_domain_info * const domain) |
973 |
kumaneko |
512 |
{ |
974 |
|
|
unsigned int count = 0; |
975 |
kumaneko |
2002 |
struct ccs_acl_info *ptr; |
976 |
kumaneko |
1052 |
if (!domain) |
977 |
|
|
return true; |
978 |
kumaneko |
2690 |
list_for_each_entry_rcu(ptr, &domain->acl_info_list, list) { |
979 |
kumaneko |
1064 |
if (ptr->type & ACL_DELETED) |
980 |
|
|
continue; |
981 |
kumaneko |
2692 |
switch (ccs_acl_type2(ptr)) { |
982 |
kumaneko |
2002 |
struct ccs_single_path_acl_record *acl1; |
983 |
|
|
struct ccs_double_path_acl_record *acl2; |
984 |
kumaneko |
1064 |
u16 perm; |
985 |
|
|
case TYPE_SINGLE_PATH_ACL: |
986 |
kumaneko |
2002 |
acl1 = container_of(ptr, |
987 |
|
|
struct ccs_single_path_acl_record, |
988 |
kumaneko |
1064 |
head); |
989 |
|
|
perm = acl1->perm; |
990 |
|
|
if (perm & (1 << TYPE_EXECUTE_ACL)) |
991 |
|
|
count++; |
992 |
|
|
if (perm & |
993 |
|
|
((1 << TYPE_READ_ACL) | (1 << TYPE_WRITE_ACL))) |
994 |
|
|
count++; |
995 |
|
|
if (perm & (1 << TYPE_CREATE_ACL)) |
996 |
|
|
count++; |
997 |
|
|
if (perm & (1 << TYPE_UNLINK_ACL)) |
998 |
|
|
count++; |
999 |
|
|
if (perm & (1 << TYPE_MKDIR_ACL)) |
1000 |
|
|
count++; |
1001 |
|
|
if (perm & (1 << TYPE_RMDIR_ACL)) |
1002 |
|
|
count++; |
1003 |
|
|
if (perm & (1 << TYPE_MKFIFO_ACL)) |
1004 |
|
|
count++; |
1005 |
|
|
if (perm & (1 << TYPE_MKSOCK_ACL)) |
1006 |
|
|
count++; |
1007 |
|
|
if (perm & (1 << TYPE_MKBLOCK_ACL)) |
1008 |
|
|
count++; |
1009 |
|
|
if (perm & (1 << TYPE_MKCHAR_ACL)) |
1010 |
|
|
count++; |
1011 |
|
|
if (perm & (1 << TYPE_TRUNCATE_ACL)) |
1012 |
|
|
count++; |
1013 |
|
|
if (perm & (1 << TYPE_SYMLINK_ACL)) |
1014 |
|
|
count++; |
1015 |
|
|
if (perm & (1 << TYPE_REWRITE_ACL)) |
1016 |
|
|
count++; |
1017 |
|
|
break; |
1018 |
|
|
case TYPE_DOUBLE_PATH_ACL: |
1019 |
kumaneko |
2002 |
acl2 = container_of(ptr, |
1020 |
|
|
struct ccs_double_path_acl_record, |
1021 |
kumaneko |
1064 |
head); |
1022 |
|
|
perm = acl2->perm; |
1023 |
|
|
if (perm & (1 << TYPE_LINK_ACL)) |
1024 |
|
|
count++; |
1025 |
|
|
if (perm & (1 << TYPE_RENAME_ACL)) |
1026 |
|
|
count++; |
1027 |
|
|
break; |
1028 |
|
|
case TYPE_EXECUTE_HANDLER: |
1029 |
|
|
case TYPE_DENIED_EXECUTE_HANDLER: |
1030 |
|
|
break; |
1031 |
|
|
default: |
1032 |
kumaneko |
1052 |
count++; |
1033 |
kumaneko |
1064 |
} |
1034 |
kumaneko |
512 |
} |
1035 |
kumaneko |
2282 |
if (count < ccs_check_flags(domain, CCS_MAX_ACCEPT_ENTRY)) |
1036 |
kumaneko |
2692 |
return true; |
1037 |
|
|
if (!domain->quota_warned) { |
1038 |
kumaneko |
1006 |
domain->quota_warned = true; |
1039 |
kumaneko |
1052 |
printk(KERN_WARNING "TOMOYO-WARNING: " |
1040 |
|
|
"Domain '%s' has so many ACLs to hold. " |
1041 |
|
|
"Stopped learning mode.\n", domain->domainname->name); |
1042 |
kumaneko |
512 |
} |
1043 |
kumaneko |
2692 |
return false; |
1044 |
kumaneko |
512 |
} |
1045 |
|
|
|
1046 |
kumaneko |
1052 |
/** |
1047 |
|
|
* ccs_find_or_assign_new_profile - Create a new profile. |
1048 |
|
|
* |
1049 |
|
|
* @profile: Profile number to create. |
1050 |
|
|
* |
1051 |
kumaneko |
2002 |
* Returns pointer to "struct ccs_profile" on success, NULL otherwise. |
1052 |
kumaneko |
1052 |
*/ |
1053 |
kumaneko |
2002 |
static struct ccs_profile *ccs_find_or_assign_new_profile(const unsigned int |
1054 |
|
|
profile) |
1055 |
kumaneko |
111 |
{ |
1056 |
kumaneko |
2540 |
struct ccs_profile *ptr; |
1057 |
|
|
struct ccs_profile *entry; |
1058 |
|
|
int i; |
1059 |
|
|
if (profile >= MAX_PROFILES) |
1060 |
|
|
return NULL; |
1061 |
kumaneko |
2692 |
ptr = ccs_profile_ptr[profile]; |
1062 |
|
|
if (ptr) |
1063 |
|
|
return ptr; |
1064 |
kumaneko |
2540 |
entry = kzalloc(sizeof(*entry), GFP_KERNEL); |
1065 |
kumaneko |
2690 |
mutex_lock(&ccs_policy_lock); |
1066 |
kumaneko |
2540 |
ptr = ccs_profile_ptr[profile]; |
1067 |
kumaneko |
2718 |
if (!ptr && ccs_memory_ok(entry, sizeof(*entry))) { |
1068 |
kumaneko |
2540 |
ptr = entry; |
1069 |
|
|
for (i = 0; i < CCS_MAX_CONTROL_INDEX; i++) |
1070 |
|
|
ptr->value[i] = ccs_control_array[i].current_value; |
1071 |
|
|
/* |
1072 |
|
|
* Needn't to initialize "ptr->capability_value" |
1073 |
|
|
* because they are always 0. |
1074 |
|
|
*/ |
1075 |
|
|
mb(); /* Avoid out-of-order execution. */ |
1076 |
|
|
ccs_profile_ptr[profile] = ptr; |
1077 |
|
|
entry = NULL; |
1078 |
kumaneko |
111 |
} |
1079 |
kumaneko |
2690 |
mutex_unlock(&ccs_policy_lock); |
1080 |
kumaneko |
2540 |
kfree(entry); |
1081 |
kumaneko |
111 |
return ptr; |
1082 |
|
|
} |
1083 |
|
|
|
1084 |
kumaneko |
1052 |
/** |
1085 |
kumaneko |
2002 |
* ccs_write_profile - Write profile table. |
1086 |
kumaneko |
1052 |
* |
1087 |
kumaneko |
1657 |
* @head: Pointer to "struct ccs_io_buffer". |
1088 |
kumaneko |
1052 |
* |
1089 |
|
|
* Returns 0 on success, negative value otherwise. |
1090 |
|
|
*/ |
1091 |
kumaneko |
2002 |
static int ccs_write_profile(struct ccs_io_buffer *head) |
1092 |
kumaneko |
111 |
{ |
1093 |
|
|
char *data = head->write_buf; |
1094 |
kumaneko |
1064 |
unsigned int i; |
1095 |
|
|
unsigned int value; |
1096 |
kumaneko |
111 |
char *cp; |
1097 |
kumaneko |
2002 |
struct ccs_profile *ccs_profile; |
1098 |
kumaneko |
111 |
i = simple_strtoul(data, &cp, 10); |
1099 |
|
|
if (data != cp) { |
1100 |
kumaneko |
1052 |
if (*cp != '-') |
1101 |
|
|
return -EINVAL; |
1102 |
|
|
data = cp + 1; |
1103 |
kumaneko |
111 |
} |
1104 |
kumaneko |
2002 |
ccs_profile = ccs_find_or_assign_new_profile(i); |
1105 |
|
|
if (!ccs_profile) |
1106 |
kumaneko |
1052 |
return -EINVAL; |
1107 |
kumaneko |
111 |
cp = strchr(data, '='); |
1108 |
kumaneko |
1052 |
if (!cp) |
1109 |
|
|
return -EINVAL; |
1110 |
kumaneko |
111 |
*cp = '\0'; |
1111 |
kumaneko |
1052 |
if (!strcmp(data, "COMMENT")) { |
1112 |
kumaneko |
2540 |
ccs_profile->comment = ccs_get_name(cp + 1); |
1113 |
kumaneko |
2254 |
ccs_profile_entry_used[0] = true; |
1114 |
kumaneko |
111 |
return 0; |
1115 |
|
|
} |
1116 |
kumaneko |
2002 |
if (ccs_str_starts(&data, KEYWORD_MAC_FOR_CAPABILITY)) { |
1117 |
kumaneko |
1014 |
if (sscanf(cp + 1, "%u", &value) != 1) { |
1118 |
kumaneko |
1015 |
for (i = 0; i < 4; i++) { |
1119 |
kumaneko |
2002 |
if (strcmp(cp + 1, ccs_mode_4[i])) |
1120 |
kumaneko |
1052 |
continue; |
1121 |
kumaneko |
1015 |
value = i; |
1122 |
kumaneko |
1014 |
break; |
1123 |
|
|
} |
1124 |
kumaneko |
1052 |
if (i == 4) |
1125 |
|
|
return -EINVAL; |
1126 |
kumaneko |
1014 |
} |
1127 |
kumaneko |
1052 |
if (value > 3) |
1128 |
|
|
value = 3; |
1129 |
kumaneko |
2282 |
for (i = 0; i < CCS_MAX_CAPABILITY_INDEX; i++) { |
1130 |
kumaneko |
2002 |
if (strcmp(data, ccs_capability_control_keyword[i])) |
1131 |
kumaneko |
1052 |
continue; |
1132 |
kumaneko |
2002 |
ccs_profile->capability_value[i] = value; |
1133 |
kumaneko |
2254 |
ccs_profile_entry_used[i + 1 + CCS_MAX_CONTROL_INDEX] |
1134 |
|
|
= true; |
1135 |
kumaneko |
1015 |
return 0; |
1136 |
|
|
} |
1137 |
|
|
return -EINVAL; |
1138 |
kumaneko |
111 |
} |
1139 |
|
|
for (i = 0; i < CCS_MAX_CONTROL_INDEX; i++) { |
1140 |
kumaneko |
1052 |
if (strcmp(data, ccs_control_array[i].keyword)) |
1141 |
|
|
continue; |
1142 |
kumaneko |
1014 |
if (sscanf(cp + 1, "%u", &value) != 1) { |
1143 |
|
|
int j; |
1144 |
|
|
const char **modes; |
1145 |
|
|
switch (i) { |
1146 |
kumaneko |
2282 |
case CCS_RESTRICT_AUTOBIND: |
1147 |
|
|
case CCS_VERBOSE: |
1148 |
kumaneko |
2002 |
modes = ccs_mode_2; |
1149 |
kumaneko |
1014 |
break; |
1150 |
|
|
default: |
1151 |
kumaneko |
2002 |
modes = ccs_mode_4; |
1152 |
kumaneko |
1014 |
break; |
1153 |
|
|
} |
1154 |
|
|
for (j = 0; j < 4; j++) { |
1155 |
kumaneko |
1052 |
if (strcmp(cp + 1, modes[j])) |
1156 |
|
|
continue; |
1157 |
kumaneko |
1014 |
value = j; |
1158 |
|
|
break; |
1159 |
|
|
} |
1160 |
kumaneko |
1052 |
if (j == 4) |
1161 |
|
|
return -EINVAL; |
1162 |
kumaneko |
1014 |
} else if (value > ccs_control_array[i].max_value) { |
1163 |
|
|
value = ccs_control_array[i].max_value; |
1164 |
|
|
} |
1165 |
kumaneko |
2002 |
ccs_profile->value[i] = value; |
1166 |
kumaneko |
2254 |
ccs_profile_entry_used[i + 1] = true; |
1167 |
kumaneko |
111 |
return 0; |
1168 |
|
|
} |
1169 |
|
|
return -EINVAL; |
1170 |
|
|
} |
1171 |
|
|
|
1172 |
kumaneko |
1052 |
/** |
1173 |
kumaneko |
2002 |
* ccs_read_profile - Read profile table. |
1174 |
kumaneko |
1052 |
* |
1175 |
kumaneko |
1657 |
* @head: Pointer to "struct ccs_io_buffer". |
1176 |
kumaneko |
1052 |
* |
1177 |
|
|
* Returns 0. |
1178 |
|
|
*/ |
1179 |
kumaneko |
2002 |
static int ccs_read_profile(struct ccs_io_buffer *head) |
1180 |
kumaneko |
111 |
{ |
1181 |
kumaneko |
2002 |
static const int ccs_total |
1182 |
kumaneko |
2282 |
= CCS_MAX_CONTROL_INDEX + CCS_MAX_CAPABILITY_INDEX + 1; |
1183 |
kumaneko |
1006 |
int step; |
1184 |
kumaneko |
1052 |
if (head->read_eof) |
1185 |
|
|
return 0; |
1186 |
kumaneko |
2002 |
for (step = head->read_step; step < MAX_PROFILES * ccs_total; step++) { |
1187 |
|
|
const u8 index = step / ccs_total; |
1188 |
|
|
u8 type = step % ccs_total; |
1189 |
|
|
const struct ccs_profile *ccs_profile = ccs_profile_ptr[index]; |
1190 |
kumaneko |
1006 |
head->read_step = step; |
1191 |
kumaneko |
2002 |
if (!ccs_profile) |
1192 |
kumaneko |
1052 |
continue; |
1193 |
kumaneko |
2254 |
if (!ccs_profile_entry_used[type]) |
1194 |
|
|
continue; |
1195 |
kumaneko |
1052 |
if (!type) { /* Print profile' comment tag. */ |
1196 |
|
|
if (!ccs_io_printf(head, "%u-COMMENT=%s\n", |
1197 |
kumaneko |
2002 |
index, ccs_profile->comment ? |
1198 |
|
|
ccs_profile->comment->name : "")) |
1199 |
kumaneko |
1052 |
break; |
1200 |
|
|
continue; |
1201 |
|
|
} |
1202 |
|
|
type--; |
1203 |
|
|
if (type >= CCS_MAX_CONTROL_INDEX) { |
1204 |
|
|
const int i = type - CCS_MAX_CONTROL_INDEX; |
1205 |
kumaneko |
2002 |
const u8 value = ccs_profile->capability_value[i]; |
1206 |
kumaneko |
1052 |
if (!ccs_io_printf(head, |
1207 |
|
|
"%u-" KEYWORD_MAC_FOR_CAPABILITY |
1208 |
|
|
"%s=%s\n", index, |
1209 |
kumaneko |
2002 |
ccs_capability_control_keyword[i], |
1210 |
|
|
ccs_mode_4[value])) |
1211 |
kumaneko |
1052 |
break; |
1212 |
kumaneko |
1006 |
} else { |
1213 |
kumaneko |
2002 |
const unsigned int value = ccs_profile->value[type]; |
1214 |
kumaneko |
1014 |
const char **modes = NULL; |
1215 |
kumaneko |
1052 |
const char *keyword = ccs_control_array[type].keyword; |
1216 |
|
|
switch (ccs_control_array[type].max_value) { |
1217 |
kumaneko |
1014 |
case 3: |
1218 |
kumaneko |
2002 |
modes = ccs_mode_4; |
1219 |
kumaneko |
1014 |
break; |
1220 |
|
|
case 1: |
1221 |
kumaneko |
2002 |
modes = ccs_mode_2; |
1222 |
kumaneko |
1014 |
break; |
1223 |
|
|
} |
1224 |
|
|
if (modes) { |
1225 |
kumaneko |
1052 |
if (!ccs_io_printf(head, "%u-%s=%s\n", index, |
1226 |
|
|
keyword, modes[value])) |
1227 |
|
|
break; |
1228 |
kumaneko |
1014 |
} else { |
1229 |
kumaneko |
1052 |
if (!ccs_io_printf(head, "%u-%s=%u\n", index, |
1230 |
|
|
keyword, value)) |
1231 |
|
|
break; |
1232 |
kumaneko |
1014 |
} |
1233 |
kumaneko |
1006 |
} |
1234 |
|
|
} |
1235 |
kumaneko |
2002 |
if (step == MAX_PROFILES * ccs_total) |
1236 |
kumaneko |
1052 |
head->read_eof = true; |
1237 |
kumaneko |
111 |
return 0; |
1238 |
|
|
} |
1239 |
|
|
|
1240 |
kumaneko |
2002 |
/* The list for "struct ccs_policy_manager_entry". */ |
1241 |
kumaneko |
2540 |
LIST_HEAD(ccs_policy_manager_list); |
1242 |
kumaneko |
111 |
|
1243 |
kumaneko |
1052 |
/** |
1244 |
kumaneko |
2002 |
* ccs_update_manager_entry - Add a manager entry. |
1245 |
kumaneko |
1052 |
* |
1246 |
|
|
* @manager: The path to manager or the domainnamme. |
1247 |
|
|
* @is_delete: True if it is a delete request. |
1248 |
|
|
* |
1249 |
|
|
* Returns 0 on success, negative value otherwise. |
1250 |
|
|
*/ |
1251 |
kumaneko |
2002 |
static int ccs_update_manager_entry(const char *manager, const bool is_delete) |
1252 |
kumaneko |
111 |
{ |
1253 |
kumaneko |
2540 |
struct ccs_policy_manager_entry *entry = NULL; |
1254 |
kumaneko |
2002 |
struct ccs_policy_manager_entry *ptr; |
1255 |
|
|
const struct ccs_path_info *saved_manager; |
1256 |
kumaneko |
2540 |
int error = is_delete ? -ENOENT : -ENOMEM; |
1257 |
kumaneko |
1006 |
bool is_domain = false; |
1258 |
kumaneko |
1052 |
if (ccs_is_domain_def(manager)) { |
1259 |
kumaneko |
2577 |
if (!ccs_is_correct_domain(manager)) |
1260 |
kumaneko |
1052 |
return -EINVAL; |
1261 |
kumaneko |
1006 |
is_domain = true; |
1262 |
kumaneko |
111 |
} else { |
1263 |
kumaneko |
2577 |
if (!ccs_is_correct_path(manager, 1, -1, -1)) |
1264 |
kumaneko |
1052 |
return -EINVAL; |
1265 |
kumaneko |
111 |
} |
1266 |
kumaneko |
2540 |
saved_manager = ccs_get_name(manager); |
1267 |
kumaneko |
1052 |
if (!saved_manager) |
1268 |
|
|
return -ENOMEM; |
1269 |
kumaneko |
2540 |
if (!is_delete) |
1270 |
|
|
entry = kzalloc(sizeof(*entry), GFP_KERNEL); |
1271 |
kumaneko |
2690 |
mutex_lock(&ccs_policy_lock); |
1272 |
|
|
list_for_each_entry_rcu(ptr, &ccs_policy_manager_list, list) { |
1273 |
kumaneko |
1064 |
if (ptr->manager != saved_manager) |
1274 |
|
|
continue; |
1275 |
|
|
ptr->is_deleted = is_delete; |
1276 |
|
|
error = 0; |
1277 |
kumaneko |
2540 |
break; |
1278 |
kumaneko |
111 |
} |
1279 |
kumaneko |
2718 |
if (!is_delete && error && ccs_memory_ok(entry, sizeof(*entry))) { |
1280 |
kumaneko |
2540 |
entry->manager = saved_manager; |
1281 |
|
|
saved_manager = NULL; |
1282 |
|
|
entry->is_domain = is_domain; |
1283 |
kumaneko |
2690 |
list_add_tail_rcu(&entry->list, &ccs_policy_manager_list); |
1284 |
kumaneko |
2540 |
entry = NULL; |
1285 |
|
|
error = 0; |
1286 |
kumaneko |
111 |
} |
1287 |
kumaneko |
2690 |
mutex_unlock(&ccs_policy_lock); |
1288 |
kumaneko |
2540 |
ccs_put_name(saved_manager); |
1289 |
|
|
kfree(entry); |
1290 |
kumaneko |
111 |
return error; |
1291 |
|
|
} |
1292 |
|
|
|
1293 |
kumaneko |
1052 |
/** |
1294 |
kumaneko |
2002 |
* ccs_write_manager_policy - Write manager policy. |
1295 |
kumaneko |
1052 |
* |
1296 |
kumaneko |
1657 |
* @head: Pointer to "struct ccs_io_buffer". |
1297 |
kumaneko |
1052 |
* |
1298 |
|
|
* Returns 0 on success, negative value otherwise. |
1299 |
|
|
*/ |
1300 |
kumaneko |
2002 |
static int ccs_write_manager_policy(struct ccs_io_buffer *head) |
1301 |
kumaneko |
111 |
{ |
1302 |
kumaneko |
1052 |
char *data = head->write_buf; |
1303 |
kumaneko |
2002 |
bool is_delete = ccs_str_starts(&data, KEYWORD_DELETE); |
1304 |
kumaneko |
1064 |
if (!strcmp(data, "manage_by_non_root")) { |
1305 |
kumaneko |
2002 |
ccs_manage_by_non_root = !is_delete; |
1306 |
kumaneko |
1006 |
return 0; |
1307 |
|
|
} |
1308 |
kumaneko |
2002 |
return ccs_update_manager_entry(data, is_delete); |
1309 |
kumaneko |
111 |
} |
1310 |
|
|
|
1311 |
kumaneko |
1052 |
/** |
1312 |
kumaneko |
2002 |
* ccs_read_manager_policy - Read manager policy. |
1313 |
kumaneko |
1052 |
* |
1314 |
kumaneko |
1657 |
* @head: Pointer to "struct ccs_io_buffer". |
1315 |
kumaneko |
1052 |
* |
1316 |
|
|
* Returns 0. |
1317 |
kumaneko |
2690 |
* |
1318 |
|
|
* Caller holds srcu_read_lock(&ccs_ss). |
1319 |
kumaneko |
1052 |
*/ |
1320 |
kumaneko |
2002 |
static int ccs_read_manager_policy(struct ccs_io_buffer *head) |
1321 |
kumaneko |
111 |
{ |
1322 |
kumaneko |
2540 |
struct list_head *pos; |
1323 |
kumaneko |
1052 |
if (head->read_eof) |
1324 |
|
|
return 0; |
1325 |
kumaneko |
2690 |
list_for_each_cookie(pos, head->read_var2, &ccs_policy_manager_list) { |
1326 |
kumaneko |
2002 |
struct ccs_policy_manager_entry *ptr; |
1327 |
kumaneko |
2540 |
ptr = list_entry(pos, struct ccs_policy_manager_entry, list); |
1328 |
kumaneko |
1052 |
if (ptr->is_deleted) |
1329 |
|
|
continue; |
1330 |
kumaneko |
2692 |
if (!ccs_io_printf(head, "%s\n", ptr->manager->name)) |
1331 |
|
|
return 0; |
1332 |
kumaneko |
111 |
} |
1333 |
kumaneko |
2692 |
head->read_eof = true; |
1334 |
kumaneko |
111 |
return 0; |
1335 |
|
|
} |
1336 |
|
|
|
1337 |
kumaneko |
1052 |
/** |
1338 |
kumaneko |
2002 |
* ccs_is_policy_manager - Check whether the current process is a policy manager. |
1339 |
kumaneko |
1052 |
* |
1340 |
|
|
* Returns true if the current process is permitted to modify policy |
1341 |
|
|
* via /proc/ccs/ interface. |
1342 |
kumaneko |
2701 |
* |
1343 |
|
|
* Caller holds srcu_read_lock(&ccs_ss). |
1344 |
kumaneko |
1052 |
*/ |
1345 |
kumaneko |
2002 |
static bool ccs_is_policy_manager(void) |
1346 |
kumaneko |
111 |
{ |
1347 |
kumaneko |
2002 |
struct ccs_policy_manager_entry *ptr; |
1348 |
kumaneko |
111 |
const char *exe; |
1349 |
kumaneko |
1578 |
struct task_struct *task = current; |
1350 |
kumaneko |
2282 |
const struct ccs_path_info *domainname |
1351 |
|
|
= ccs_current_domain()->domainname; |
1352 |
kumaneko |
1006 |
bool found = false; |
1353 |
kumaneko |
2040 |
if (!ccs_policy_loaded) |
1354 |
kumaneko |
1052 |
return true; |
1355 |
kumaneko |
2282 |
if (task->ccs_flags & CCS_TASK_IS_POLICY_MANAGER) |
1356 |
kumaneko |
1578 |
return true; |
1357 |
kumaneko |
2016 |
if (!ccs_manage_by_non_root && (current_uid() || current_euid())) |
1358 |
kumaneko |
1052 |
return false; |
1359 |
kumaneko |
2690 |
list_for_each_entry_rcu(ptr, &ccs_policy_manager_list, list) { |
1360 |
kumaneko |
1052 |
if (!ptr->is_deleted && ptr->is_domain |
1361 |
kumaneko |
1578 |
&& !ccs_pathcmp(domainname, ptr->manager)) { |
1362 |
|
|
/* Set manager flag. */ |
1363 |
kumaneko |
2282 |
task->ccs_flags |= CCS_TASK_IS_POLICY_MANAGER; |
1364 |
kumaneko |
1052 |
return true; |
1365 |
kumaneko |
1578 |
} |
1366 |
kumaneko |
111 |
} |
1367 |
kumaneko |
1052 |
exe = ccs_get_exe(); |
1368 |
|
|
if (!exe) |
1369 |
|
|
return false; |
1370 |
kumaneko |
2690 |
list_for_each_entry_rcu(ptr, &ccs_policy_manager_list, list) { |
1371 |
kumaneko |
1052 |
if (!ptr->is_deleted && !ptr->is_domain |
1372 |
|
|
&& !strcmp(exe, ptr->manager->name)) { |
1373 |
kumaneko |
1006 |
found = true; |
1374 |
kumaneko |
1578 |
/* Set manager flag. */ |
1375 |
kumaneko |
2282 |
task->ccs_flags |= CCS_TASK_IS_POLICY_MANAGER; |
1376 |
kumaneko |
708 |
break; |
1377 |
|
|
} |
1378 |
kumaneko |
111 |
} |
1379 |
kumaneko |
708 |
if (!found) { /* Reduce error messages. */ |
1380 |
kumaneko |
2002 |
static pid_t ccs_last_pid; |
1381 |
kumaneko |
111 |
const pid_t pid = current->pid; |
1382 |
kumaneko |
2002 |
if (ccs_last_pid != pid) { |
1383 |
kumaneko |
1052 |
printk(KERN_WARNING "%s ( %s ) is not permitted to " |
1384 |
|
|
"update policies.\n", domainname->name, exe); |
1385 |
kumaneko |
2002 |
ccs_last_pid = pid; |
1386 |
kumaneko |
111 |
} |
1387 |
|
|
} |
1388 |
kumaneko |
2711 |
kfree(exe); |
1389 |
kumaneko |
708 |
return found; |
1390 |
kumaneko |
111 |
} |
1391 |
|
|
|
1392 |
kumaneko |
1052 |
/** |
1393 |
|
|
* ccs_find_condition_part - Find condition part from the statement. |
1394 |
|
|
* |
1395 |
|
|
* @data: String to parse. |
1396 |
|
|
* |
1397 |
|
|
* Returns pointer to the condition part if it was found in the statement, |
1398 |
|
|
* NULL otherwise. |
1399 |
|
|
*/ |
1400 |
|
|
static char *ccs_find_condition_part(char *data) |
1401 |
kumaneko |
581 |
{ |
1402 |
kumaneko |
1064 |
char *cp = strstr(data, " if "); |
1403 |
kumaneko |
581 |
if (cp) { |
1404 |
kumaneko |
1747 |
while (1) { |
1405 |
|
|
char *cp2 = strstr(cp + 3, " if "); |
1406 |
|
|
if (!cp2) |
1407 |
|
|
break; |
1408 |
kumaneko |
1064 |
cp = cp2; |
1409 |
kumaneko |
1747 |
} |
1410 |
kumaneko |
581 |
*cp++ = '\0'; |
1411 |
kumaneko |
1052 |
} else { |
1412 |
|
|
cp = strstr(data, " ; set "); |
1413 |
|
|
if (cp) |
1414 |
|
|
*cp++ = '\0'; |
1415 |
kumaneko |
581 |
} |
1416 |
|
|
return cp; |
1417 |
|
|
} |
1418 |
|
|
|
1419 |
kumaneko |
1052 |
/** |
1420 |
kumaneko |
2002 |
* ccs_is_select_one - Parse select command. |
1421 |
kumaneko |
1609 |
* |
1422 |
|
|
* @head: Pointer to "struct ccs_io_buffer". |
1423 |
|
|
* @data: String to parse. |
1424 |
|
|
* |
1425 |
|
|
* Returns true on success, false otherwise. |
1426 |
kumaneko |
2690 |
* |
1427 |
|
|
* Caller holds srcu_read_lock(&ccs_ss). |
1428 |
kumaneko |
1609 |
*/ |
1429 |
kumaneko |
2002 |
static bool ccs_is_select_one(struct ccs_io_buffer *head, const char *data) |
1430 |
kumaneko |
1609 |
{ |
1431 |
|
|
unsigned int pid; |
1432 |
kumaneko |
2692 |
struct ccs_domain_info *domain = NULL; |
1433 |
kumaneko |
1926 |
if (!strcmp(data, "allow_execute")) { |
1434 |
|
|
head->read_execute_only = true; |
1435 |
|
|
return true; |
1436 |
|
|
} |
1437 |
kumaneko |
1609 |
if (sscanf(data, "pid=%u", &pid) == 1) { |
1438 |
|
|
struct task_struct *p; |
1439 |
|
|
/***** CRITICAL SECTION START *****/ |
1440 |
|
|
read_lock(&tasklist_lock); |
1441 |
|
|
p = find_task_by_pid(pid); |
1442 |
|
|
if (p) |
1443 |
kumaneko |
2690 |
domain = ccs_task_domain(p); |
1444 |
kumaneko |
1609 |
read_unlock(&tasklist_lock); |
1445 |
|
|
/***** CRITICAL SECTION END *****/ |
1446 |
|
|
} else if (!strncmp(data, "domain=", 7)) { |
1447 |
kumaneko |
2544 |
if (ccs_is_domain_def(data + 7)) |
1448 |
kumaneko |
2690 |
domain = ccs_find_domain(data + 7); |
1449 |
kumaneko |
1609 |
} else |
1450 |
|
|
return false; |
1451 |
kumaneko |
2690 |
head->write_var1 = domain; |
1452 |
kumaneko |
1810 |
/* Accessing read_buf is safe because head->io_sem is held. */ |
1453 |
kumaneko |
1809 |
if (!head->read_buf) |
1454 |
|
|
return true; /* Do nothing if open(O_WRONLY). */ |
1455 |
kumaneko |
1609 |
head->read_avail = 0; |
1456 |
|
|
ccs_io_printf(head, "# select %s\n", data); |
1457 |
|
|
head->read_single_domain = true; |
1458 |
kumaneko |
2690 |
head->read_eof = !domain; |
1459 |
kumaneko |
2692 |
if (domain) { |
1460 |
|
|
struct ccs_domain_info *d; |
1461 |
|
|
head->read_var1 = NULL; |
1462 |
|
|
list_for_each_entry_rcu(d, &ccs_domain_list, list) { |
1463 |
|
|
if (d == domain) |
1464 |
|
|
break; |
1465 |
|
|
head->read_var1 = &d->list; |
1466 |
|
|
} |
1467 |
|
|
head->read_var2 = NULL; |
1468 |
|
|
head->read_bit = 0; |
1469 |
|
|
head->read_step = 0; |
1470 |
|
|
if (domain->is_deleted) |
1471 |
|
|
ccs_io_printf(head, "# This is a deleted domain.\n"); |
1472 |
|
|
} |
1473 |
kumaneko |
1609 |
return true; |
1474 |
|
|
} |
1475 |
|
|
|
1476 |
|
|
/** |
1477 |
kumaneko |
2002 |
* ccs_write_domain_policy - Write domain policy. |
1478 |
kumaneko |
1052 |
* |
1479 |
|
|
* @head: Pointer to "struct ccs_io_buffer". |
1480 |
|
|
* |
1481 |
|
|
* Returns 0 on success, negative value otherwise. |
1482 |
|
|
*/ |
1483 |
kumaneko |
2002 |
static int ccs_write_domain_policy(struct ccs_io_buffer *head) |
1484 |
kumaneko |
111 |
{ |
1485 |
|
|
char *data = head->write_buf; |
1486 |
kumaneko |
2690 |
struct ccs_domain_info *domain = head->write_var1; |
1487 |
kumaneko |
1064 |
bool is_delete = false; |
1488 |
|
|
bool is_select = false; |
1489 |
kumaneko |
111 |
unsigned int profile; |
1490 |
kumaneko |
2576 |
struct ccs_condition *cond = NULL; |
1491 |
kumaneko |
906 |
char *cp; |
1492 |
kumaneko |
2553 |
int error; |
1493 |
kumaneko |
2002 |
if (ccs_str_starts(&data, KEYWORD_DELETE)) |
1494 |
kumaneko |
1006 |
is_delete = true; |
1495 |
kumaneko |
2002 |
else if (ccs_str_starts(&data, KEYWORD_SELECT)) |
1496 |
kumaneko |
1006 |
is_select = true; |
1497 |
kumaneko |
2002 |
if (is_select && ccs_is_select_one(head, data)) |
1498 |
kumaneko |
1609 |
return 0; |
1499 |
kumaneko |
1606 |
/* Don't allow updating policies by non manager programs. */ |
1500 |
kumaneko |
2002 |
if (!ccs_is_policy_manager()) |
1501 |
kumaneko |
1606 |
return -EPERM; |
1502 |
kumaneko |
1052 |
if (ccs_is_domain_def(data)) { |
1503 |
kumaneko |
2690 |
domain = NULL; |
1504 |
kumaneko |
2692 |
if (is_delete) |
1505 |
kumaneko |
1052 |
ccs_delete_domain(data); |
1506 |
kumaneko |
2692 |
else if (is_select) |
1507 |
kumaneko |
2690 |
domain = ccs_find_domain(data); |
1508 |
kumaneko |
2544 |
else |
1509 |
kumaneko |
2690 |
domain = ccs_find_or_assign_new_domain(data, 0); |
1510 |
kumaneko |
2692 |
head->write_var1 = domain; |
1511 |
kumaneko |
111 |
return 0; |
1512 |
|
|
} |
1513 |
kumaneko |
2690 |
if (!domain) |
1514 |
kumaneko |
1052 |
return -EINVAL; |
1515 |
kumaneko |
581 |
|
1516 |
kumaneko |
1052 |
if (sscanf(data, KEYWORD_USE_PROFILE "%u", &profile) == 1 |
1517 |
|
|
&& profile < MAX_PROFILES) { |
1518 |
kumaneko |
2040 |
if (ccs_profile_ptr[profile] || !ccs_policy_loaded) |
1519 |
kumaneko |
2690 |
domain->profile = (u8) profile; |
1520 |
kumaneko |
581 |
return 0; |
1521 |
|
|
} |
1522 |
kumaneko |
1052 |
if (!strcmp(data, KEYWORD_IGNORE_GLOBAL_ALLOW_READ)) { |
1523 |
kumaneko |
2690 |
domain->ignore_global_allow_read = !is_delete; |
1524 |
kumaneko |
1007 |
return 0; |
1525 |
|
|
} |
1526 |
kumaneko |
1052 |
if (!strcmp(data, KEYWORD_IGNORE_GLOBAL_ALLOW_ENV)) { |
1527 |
kumaneko |
2690 |
domain->ignore_global_allow_env = !is_delete; |
1528 |
kumaneko |
1007 |
return 0; |
1529 |
|
|
} |
1530 |
kumaneko |
1052 |
cp = ccs_find_condition_part(data); |
1531 |
|
|
if (cp) { |
1532 |
kumaneko |
2553 |
cond = ccs_get_condition(cp); |
1533 |
kumaneko |
1052 |
if (!cond) |
1534 |
|
|
return -EINVAL; |
1535 |
kumaneko |
111 |
} |
1536 |
kumaneko |
2002 |
if (ccs_str_starts(&data, KEYWORD_ALLOW_CAPABILITY)) |
1537 |
kumaneko |
2690 |
error = ccs_write_capability_policy(data, domain, cond, |
1538 |
|
|
is_delete); |
1539 |
kumaneko |
2002 |
else if (ccs_str_starts(&data, KEYWORD_ALLOW_NETWORK)) |
1540 |
kumaneko |
2690 |
error = ccs_write_network_policy(data, domain, cond, is_delete); |
1541 |
kumaneko |
2553 |
else if (ccs_str_starts(&data, KEYWORD_ALLOW_SIGNAL)) |
1542 |
kumaneko |
2690 |
error = ccs_write_signal_policy(data, domain, cond, is_delete); |
1543 |
kumaneko |
2553 |
else if (ccs_str_starts(&data, KEYWORD_ALLOW_ARGV0)) |
1544 |
kumaneko |
2690 |
error = ccs_write_argv0_policy(data, domain, cond, is_delete); |
1545 |
kumaneko |
2002 |
else if (ccs_str_starts(&data, KEYWORD_ALLOW_ENV)) |
1546 |
kumaneko |
2690 |
error = ccs_write_env_policy(data, domain, cond, is_delete); |
1547 |
kumaneko |
2271 |
else if (ccs_str_starts(&data, KEYWORD_ALLOW_IOCTL)) |
1548 |
kumaneko |
2690 |
error = ccs_write_ioctl_policy(data, domain, cond, is_delete); |
1549 |
kumaneko |
2707 |
else if (ccs_str_starts(&data, KEYWORD_ALLOW_MOUNT)) |
1550 |
|
|
error = ccs_write_mount_policy(data, domain, cond, is_delete); |
1551 |
kumaneko |
2708 |
else if (ccs_str_starts(&data, KEYWORD_ALLOW_UNMOUNT)) |
1552 |
|
|
error = ccs_write_umount_policy(data, domain, cond, is_delete); |
1553 |
kumaneko |
2707 |
else if (ccs_str_starts(&data, KEYWORD_ALLOW_CHROOT)) |
1554 |
|
|
error = ccs_write_chroot_policy(data, domain, cond, is_delete); |
1555 |
|
|
else if (ccs_str_starts(&data, KEYWORD_ALLOW_PIVOT_ROOT)) |
1556 |
|
|
error = ccs_write_pivot_root_policy(data, domain, cond, |
1557 |
|
|
is_delete); |
1558 |
kumaneko |
2553 |
else |
1559 |
kumaneko |
2690 |
error = ccs_write_file_policy(data, domain, cond, is_delete); |
1560 |
kumaneko |
2553 |
if (cond) |
1561 |
|
|
ccs_put_condition(cond); |
1562 |
|
|
return error; |
1563 |
kumaneko |
111 |
} |
1564 |
|
|
|
1565 |
kumaneko |
1052 |
/** |
1566 |
kumaneko |
2002 |
* ccs_print_single_path_acl - Print a single path ACL entry. |
1567 |
kumaneko |
1052 |
* |
1568 |
|
|
* @head: Pointer to "struct ccs_io_buffer". |
1569 |
kumaneko |
2002 |
* @ptr: Pointer to "struct ccs_single_path_acl_record". |
1570 |
kumaneko |
2576 |
* @cond: Pointer to "struct ccs_condition". May be NULL. |
1571 |
kumaneko |
1052 |
* |
1572 |
|
|
* Returns true on success, false otherwise. |
1573 |
|
|
*/ |
1574 |
kumaneko |
2002 |
static bool ccs_print_single_path_acl(struct ccs_io_buffer *head, |
1575 |
|
|
struct ccs_single_path_acl_record *ptr, |
1576 |
kumaneko |
2576 |
const struct ccs_condition *cond) |
1577 |
kumaneko |
856 |
{ |
1578 |
|
|
int pos; |
1579 |
|
|
u8 bit; |
1580 |
kumaneko |
1052 |
const char *atmark = ""; |
1581 |
|
|
const char *filename; |
1582 |
kumaneko |
856 |
const u16 perm = ptr->perm; |
1583 |
kumaneko |
1052 |
if (ptr->u_is_group) { |
1584 |
|
|
atmark = "@"; |
1585 |
|
|
filename = ptr->u.group->group_name->name; |
1586 |
|
|
} else { |
1587 |
|
|
filename = ptr->u.filename->name; |
1588 |
|
|
} |
1589 |
kumaneko |
856 |
for (bit = head->read_bit; bit < MAX_SINGLE_PATH_OPERATION; bit++) { |
1590 |
|
|
const char *msg; |
1591 |
kumaneko |
1052 |
if (!(perm & (1 << bit))) |
1592 |
|
|
continue; |
1593 |
kumaneko |
1926 |
if (head->read_execute_only && bit != TYPE_EXECUTE_ACL) |
1594 |
|
|
continue; |
1595 |
kumaneko |
856 |
/* Print "read/write" instead of "read" and "write". */ |
1596 |
kumaneko |
1052 |
if ((bit == TYPE_READ_ACL || bit == TYPE_WRITE_ACL) |
1597 |
|
|
&& (perm & (1 << TYPE_READ_WRITE_ACL))) |
1598 |
|
|
continue; |
1599 |
|
|
msg = ccs_sp2keyword(bit); |
1600 |
kumaneko |
856 |
pos = head->read_avail; |
1601 |
kumaneko |
1052 |
if (!ccs_io_printf(head, "allow_%s %s%s", msg, |
1602 |
|
|
atmark, filename) || |
1603 |
kumaneko |
1054 |
!ccs_print_condition(head, cond)) |
1604 |
kumaneko |
1052 |
goto out; |
1605 |
kumaneko |
856 |
} |
1606 |
|
|
head->read_bit = 0; |
1607 |
kumaneko |
1006 |
return true; |
1608 |
kumaneko |
856 |
out: |
1609 |
|
|
head->read_bit = bit; |
1610 |
|
|
head->read_avail = pos; |
1611 |
kumaneko |
1006 |
return false; |
1612 |
kumaneko |
856 |
} |
1613 |
|
|
|
1614 |
kumaneko |
1052 |
/** |
1615 |
kumaneko |
2002 |
* ccs_print_double_path_acl - Print a double path ACL entry. |
1616 |
kumaneko |
1052 |
* |
1617 |
|
|
* @head: Pointer to "struct ccs_io_buffer". |
1618 |
kumaneko |
2002 |
* @ptr: Pointer to "struct ccs_double_path_acl_record". |
1619 |
kumaneko |
2576 |
* @cond: Pointer to "struct ccs_condition". May be NULL. |
1620 |
kumaneko |
1052 |
* |
1621 |
|
|
* Returns true on success, false otherwise. |
1622 |
|
|
*/ |
1623 |
kumaneko |
2002 |
static bool ccs_print_double_path_acl(struct ccs_io_buffer *head, |
1624 |
|
|
struct ccs_double_path_acl_record *ptr, |
1625 |
kumaneko |
2576 |
const struct ccs_condition *cond) |
1626 |
kumaneko |
856 |
{ |
1627 |
|
|
int pos; |
1628 |
kumaneko |
1052 |
const char *atmark1 = ""; |
1629 |
|
|
const char *atmark2 = ""; |
1630 |
|
|
const char *filename1; |
1631 |
|
|
const char *filename2; |
1632 |
kumaneko |
856 |
const u8 perm = ptr->perm; |
1633 |
|
|
u8 bit; |
1634 |
kumaneko |
1052 |
if (ptr->u1_is_group) { |
1635 |
|
|
atmark1 = "@"; |
1636 |
|
|
filename1 = ptr->u1.group1->group_name->name; |
1637 |
|
|
} else { |
1638 |
|
|
filename1 = ptr->u1.filename1->name; |
1639 |
|
|
} |
1640 |
|
|
if (ptr->u2_is_group) { |
1641 |
|
|
atmark2 = "@"; |
1642 |
|
|
filename2 = ptr->u2.group2->group_name->name; |
1643 |
|
|
} else { |
1644 |
|
|
filename2 = ptr->u2.filename2->name; |
1645 |
|
|
} |
1646 |
kumaneko |
856 |
for (bit = head->read_bit; bit < MAX_DOUBLE_PATH_OPERATION; bit++) { |
1647 |
|
|
const char *msg; |
1648 |
kumaneko |
1052 |
if (!(perm & (1 << bit))) |
1649 |
|
|
continue; |
1650 |
|
|
msg = ccs_dp2keyword(bit); |
1651 |
kumaneko |
856 |
pos = head->read_avail; |
1652 |
kumaneko |
1052 |
if (!ccs_io_printf(head, "allow_%s %s%s %s%s", msg, |
1653 |
kumaneko |
1064 |
atmark1, filename1, atmark2, filename2) || |
1654 |
kumaneko |
1054 |
!ccs_print_condition(head, cond)) |
1655 |
kumaneko |
1052 |
goto out; |
1656 |
kumaneko |
856 |
} |
1657 |
kumaneko |
1032 |
head->read_bit = 0; |
1658 |
kumaneko |
1006 |
return true; |
1659 |
kumaneko |
856 |
out: |
1660 |
|
|
head->read_bit = bit; |
1661 |
|
|
head->read_avail = pos; |
1662 |
kumaneko |
1006 |
return false; |
1663 |
kumaneko |
856 |
} |
1664 |
|
|
|
1665 |
kumaneko |
1052 |
/** |
1666 |
kumaneko |
2271 |
* ccs_print_ioctl_acl - Print an ioctl ACL entry. |
1667 |
|
|
* |
1668 |
|
|
* @head: Pointer to "struct ccs_io_buffer". |
1669 |
|
|
* @ptr: Pointer to "struct ccs_ioctl_acl_record". |
1670 |
kumaneko |
2576 |
* @cond: Pointer to "struct ccs_condition". May be NULL. |
1671 |
kumaneko |
2271 |
* |
1672 |
|
|
* Returns true on success, false otherwise. |
1673 |
|
|
*/ |
1674 |
|
|
static bool ccs_print_ioctl_acl(struct ccs_io_buffer *head, |
1675 |
|
|
struct ccs_ioctl_acl_record *ptr, |
1676 |
kumaneko |
2576 |
const struct ccs_condition *cond) |
1677 |
kumaneko |
2271 |
{ |
1678 |
|
|
int pos = head->read_avail; |
1679 |
|
|
const char *atmark = ""; |
1680 |
|
|
const char *filename; |
1681 |
|
|
const unsigned int cmd_min = ptr->cmd_min; |
1682 |
|
|
const unsigned int cmd_max = ptr->cmd_max; |
1683 |
|
|
if (ptr->u_is_group) { |
1684 |
|
|
atmark = "@"; |
1685 |
|
|
filename = ptr->u.group->group_name->name; |
1686 |
|
|
} else { |
1687 |
|
|
filename = ptr->u.filename->name; |
1688 |
|
|
} |
1689 |
|
|
if (!ccs_io_printf(head, KEYWORD_ALLOW_IOCTL "%s%s ", atmark, filename)) |
1690 |
|
|
goto out; |
1691 |
|
|
if (!ccs_io_printf(head, "%u", cmd_min)) |
1692 |
|
|
goto out; |
1693 |
|
|
if (cmd_min != cmd_max && !ccs_io_printf(head, "-%u", cmd_max)) |
1694 |
|
|
goto out; |
1695 |
|
|
if (!ccs_print_condition(head, cond)) |
1696 |
|
|
goto out; |
1697 |
|
|
return true; |
1698 |
|
|
out: |
1699 |
|
|
head->read_avail = pos; |
1700 |
|
|
return false; |
1701 |
|
|
} |
1702 |
|
|
|
1703 |
|
|
/** |
1704 |
kumaneko |
2002 |
* ccs_print_argv0_acl - Print an argv[0] ACL entry. |
1705 |
kumaneko |
1052 |
* |
1706 |
|
|
* @head: Pointer to "struct ccs_io_buffer". |
1707 |
kumaneko |
2002 |
* @ptr: Pointer to "struct ccs_argv0_acl_record". |
1708 |
kumaneko |
2576 |
* @cond: Pointer to "struct ccs_condition". May be NULL. |
1709 |
kumaneko |
1052 |
* |
1710 |
|
|
* Returns true on success, false otherwise. |
1711 |
|
|
*/ |
1712 |
kumaneko |
2002 |
static bool ccs_print_argv0_acl(struct ccs_io_buffer *head, |
1713 |
|
|
struct ccs_argv0_acl_record *ptr, |
1714 |
kumaneko |
2576 |
const struct ccs_condition *cond) |
1715 |
kumaneko |
856 |
{ |
1716 |
|
|
int pos = head->read_avail; |
1717 |
kumaneko |
1052 |
if (!ccs_io_printf(head, KEYWORD_ALLOW_ARGV0 "%s %s", |
1718 |
|
|
ptr->filename->name, ptr->argv0->name)) |
1719 |
|
|
goto out; |
1720 |
kumaneko |
1054 |
if (!ccs_print_condition(head, cond)) |
1721 |
kumaneko |
1052 |
goto out; |
1722 |
kumaneko |
1006 |
return true; |
1723 |
kumaneko |
856 |
out: |
1724 |
|
|
head->read_avail = pos; |
1725 |
kumaneko |
1006 |
return false; |
1726 |
kumaneko |
856 |
} |
1727 |
|
|
|
1728 |
kumaneko |
1052 |
/** |
1729 |
kumaneko |
2002 |
* ccs_print_env_acl - Print an evironment variable name's ACL entry. |
1730 |
kumaneko |
1052 |
* |
1731 |
|
|
* @head: Pointer to "struct ccs_io_buffer". |
1732 |
kumaneko |
2002 |
* @ptr: Pointer to "struct ccs_env_acl_record". |
1733 |
kumaneko |
2576 |
* @cond: Pointer to "struct ccs_condition". May be NULL. |
1734 |
kumaneko |
1052 |
* |
1735 |
|
|
* Returns true on success, false otherwise. |
1736 |
|
|
*/ |
1737 |
kumaneko |
2002 |
static bool ccs_print_env_acl(struct ccs_io_buffer *head, |
1738 |
|
|
struct ccs_env_acl_record *ptr, |
1739 |
kumaneko |
2576 |
const struct ccs_condition *cond) |
1740 |
kumaneko |
856 |
{ |
1741 |
|
|
int pos = head->read_avail; |
1742 |
kumaneko |
1052 |
if (!ccs_io_printf(head, KEYWORD_ALLOW_ENV "%s", ptr->env->name)) |
1743 |
|
|
goto out; |
1744 |
kumaneko |
1054 |
if (!ccs_print_condition(head, cond)) |
1745 |
kumaneko |
1052 |
goto out; |
1746 |
kumaneko |
1006 |
return true; |
1747 |
kumaneko |
856 |
out: |
1748 |
|
|
head->read_avail = pos; |
1749 |
kumaneko |
1006 |
return false; |
1750 |
kumaneko |
856 |
} |
1751 |
|
|
|
1752 |
kumaneko |
1052 |
/** |
1753 |
kumaneko |
2002 |
* ccs_print_capability_acl - Print a capability ACL entry. |
1754 |
kumaneko |
1052 |
* |
1755 |
|
|
* @head: Pointer to "struct ccs_io_buffer". |
1756 |
kumaneko |
2002 |
* @ptr: Pointer to "struct ccs_capability_acl_record". |
1757 |
kumaneko |
2576 |
* @cond: Pointer to "struct ccs_condition". May be NULL. |
1758 |
kumaneko |
1052 |
* |
1759 |
|
|
* Returns true on success, false otherwise. |
1760 |
|
|
*/ |
1761 |
kumaneko |
2002 |
static bool ccs_print_capability_acl(struct ccs_io_buffer *head, |
1762 |
|
|
struct ccs_capability_acl_record *ptr, |
1763 |
kumaneko |
2576 |
const struct ccs_condition *cond) |
1764 |
kumaneko |
856 |
{ |
1765 |
kumaneko |
860 |
int pos = head->read_avail; |
1766 |
kumaneko |
1052 |
if (!ccs_io_printf(head, KEYWORD_ALLOW_CAPABILITY "%s", |
1767 |
|
|
ccs_cap2keyword(ptr->operation))) |
1768 |
|
|
goto out; |
1769 |
kumaneko |
1054 |
if (!ccs_print_condition(head, cond)) |
1770 |
kumaneko |
1052 |
goto out; |
1771 |
kumaneko |
1006 |
return true; |
1772 |
kumaneko |
856 |
out: |
1773 |
|
|
head->read_avail = pos; |
1774 |
kumaneko |
1006 |
return false; |
1775 |
kumaneko |
856 |
} |
1776 |
|
|
|
1777 |
kumaneko |
1052 |
/** |
1778 |
kumaneko |
2002 |
* ccs_print_ipv4_entry - Print IPv4 address of a network ACL entry. |
1779 |
kumaneko |
1052 |
* |
1780 |
|
|
* @head: Pointer to "struct ccs_io_buffer". |
1781 |
kumaneko |
2002 |
* @ptr: Pointer to "struct ccs_ip_network_acl_record". |
1782 |
kumaneko |
1052 |
* |
1783 |
|
|
* Returns true on success, false otherwise. |
1784 |
|
|
*/ |
1785 |
kumaneko |
2002 |
static bool ccs_print_ipv4_entry(struct ccs_io_buffer *head, |
1786 |
|
|
struct ccs_ip_network_acl_record *ptr) |
1787 |
kumaneko |
856 |
{ |
1788 |
kumaneko |
1052 |
const u32 min_address = ptr->u.ipv4.min; |
1789 |
|
|
const u32 max_address = ptr->u.ipv4.max; |
1790 |
|
|
if (!ccs_io_printf(head, "%u.%u.%u.%u", HIPQUAD(min_address))) |
1791 |
|
|
return false; |
1792 |
|
|
if (min_address != max_address |
1793 |
|
|
&& !ccs_io_printf(head, "-%u.%u.%u.%u", HIPQUAD(max_address))) |
1794 |
|
|
return false; |
1795 |
|
|
return true; |
1796 |
|
|
} |
1797 |
|
|
|
1798 |
|
|
/** |
1799 |
kumaneko |
2002 |
* ccs_print_ipv6_entry - Print IPv6 address of a network ACL entry. |
1800 |
kumaneko |
1052 |
* |
1801 |
|
|
* @head: Pointer to "struct ccs_io_buffer". |
1802 |
kumaneko |
2002 |
* @ptr: Pointer to "struct ccs_ip_network_acl_record". |
1803 |
kumaneko |
1052 |
* |
1804 |
|
|
* Returns true on success, false otherwise. |
1805 |
|
|
*/ |
1806 |
kumaneko |
2002 |
static bool ccs_print_ipv6_entry(struct ccs_io_buffer *head, |
1807 |
|
|
struct ccs_ip_network_acl_record *ptr) |
1808 |
kumaneko |
1052 |
{ |
1809 |
|
|
char buf[64]; |
1810 |
|
|
const struct in6_addr *min_address = ptr->u.ipv6.min; |
1811 |
|
|
const struct in6_addr *max_address = ptr->u.ipv6.max; |
1812 |
|
|
ccs_print_ipv6(buf, sizeof(buf), min_address); |
1813 |
|
|
if (!ccs_io_printf(head, "%s", buf)) |
1814 |
|
|
return false; |
1815 |
|
|
if (min_address != max_address) { |
1816 |
|
|
ccs_print_ipv6(buf, sizeof(buf), max_address); |
1817 |
|
|
if (!ccs_io_printf(head, "-%s", buf)) |
1818 |
|
|
return false; |
1819 |
|
|
} |
1820 |
|
|
return true; |
1821 |
|
|
} |
1822 |
|
|
|
1823 |
|
|
/** |
1824 |
kumaneko |
2002 |
* ccs_print_port_entry - Print port number of a network ACL entry. |
1825 |
kumaneko |
1052 |
* |
1826 |
|
|
* @head: Pointer to "struct ccs_io_buffer". |
1827 |
kumaneko |
2002 |
* @ptr: Pointer to "struct ccs_ip_network_acl_record". |
1828 |
kumaneko |
1052 |
* |
1829 |
|
|
* Returns true on success, false otherwise. |
1830 |
|
|
*/ |
1831 |
kumaneko |
2002 |
static bool ccs_print_port_entry(struct ccs_io_buffer *head, |
1832 |
|
|
struct ccs_ip_network_acl_record *ptr) |
1833 |
kumaneko |
1052 |
{ |
1834 |
kumaneko |
2046 |
const u16 min_port = ptr->min_port; |
1835 |
|
|
const u16 max_port = ptr->max_port; |
1836 |
kumaneko |
1052 |
if (!ccs_io_printf(head, " %u", min_port)) |
1837 |
|
|
return false; |
1838 |
|
|
if (min_port != max_port && !ccs_io_printf(head, "-%u", max_port)) |
1839 |
|
|
return false; |
1840 |
|
|
return true; |
1841 |
|
|
} |
1842 |
|
|
|
1843 |
|
|
/** |
1844 |
kumaneko |
2002 |
* ccs_print_network_acl - Print a network ACL entry. |
1845 |
kumaneko |
1052 |
* |
1846 |
|
|
* @head: Pointer to "struct ccs_io_buffer". |
1847 |
kumaneko |
2002 |
* @ptr: Pointer to "struct ccs_ip_network_acl_record". |
1848 |
kumaneko |
2576 |
* @cond: Pointer to "struct ccs_condition". May be NULL. |
1849 |
kumaneko |
1052 |
* |
1850 |
|
|
* Returns true on success, false otherwise. |
1851 |
|
|
*/ |
1852 |
kumaneko |
2002 |
static bool ccs_print_network_acl(struct ccs_io_buffer *head, |
1853 |
|
|
struct ccs_ip_network_acl_record *ptr, |
1854 |
kumaneko |
2576 |
const struct ccs_condition *cond) |
1855 |
kumaneko |
1052 |
{ |
1856 |
kumaneko |
856 |
int pos = head->read_avail; |
1857 |
kumaneko |
1052 |
if (!ccs_io_printf(head, KEYWORD_ALLOW_NETWORK "%s ", |
1858 |
|
|
ccs_net2keyword(ptr->operation_type))) |
1859 |
|
|
goto out; |
1860 |
kumaneko |
856 |
switch (ptr->record_type) { |
1861 |
|
|
case IP_RECORD_TYPE_ADDRESS_GROUP: |
1862 |
kumaneko |
1052 |
if (!ccs_io_printf(head, "@%s", ptr->u.group->group_name->name)) |
1863 |
|
|
goto out; |
1864 |
kumaneko |
856 |
break; |
1865 |
|
|
case IP_RECORD_TYPE_IPv4: |
1866 |
kumaneko |
2002 |
if (!ccs_print_ipv4_entry(head, ptr)) |
1867 |
kumaneko |
1052 |
goto out; |
1868 |
kumaneko |
856 |
break; |
1869 |
|
|
case IP_RECORD_TYPE_IPv6: |
1870 |
kumaneko |
2002 |
if (!ccs_print_ipv6_entry(head, ptr)) |
1871 |
kumaneko |
1052 |
goto out; |
1872 |
kumaneko |
856 |
break; |
1873 |
|
|
} |
1874 |
kumaneko |
2002 |
if (!ccs_print_port_entry(head, ptr)) |
1875 |
kumaneko |
1052 |
goto out; |
1876 |
kumaneko |
1054 |
if (!ccs_print_condition(head, cond)) |
1877 |
kumaneko |
1052 |
goto out; |
1878 |
kumaneko |
1006 |
return true; |
1879 |
kumaneko |
856 |
out: |
1880 |
|
|
head->read_avail = pos; |
1881 |
kumaneko |
1006 |
return false; |
1882 |
kumaneko |
856 |
} |
1883 |
|
|
|
1884 |
kumaneko |
1052 |
/** |
1885 |
kumaneko |
2002 |
* ccs_print_signal_acl - Print a signal ACL entry. |
1886 |
kumaneko |
1052 |
* |
1887 |
|
|
* @head: Pointer to "struct ccs_io_buffer". |
1888 |
|
|
* @ptr: Pointer to "struct signale_acl_record". |
1889 |
kumaneko |
2576 |
* @cond: Pointer to "struct ccs_condition". May be NULL. |
1890 |
kumaneko |
1052 |
* |
1891 |
|
|
* Returns true on success, false otherwise. |
1892 |
|
|
*/ |
1893 |
kumaneko |
2002 |
static bool ccs_print_signal_acl(struct ccs_io_buffer *head, |
1894 |
|
|
struct ccs_signal_acl_record *ptr, |
1895 |
kumaneko |
2576 |
const struct ccs_condition *cond) |
1896 |
kumaneko |
856 |
{ |
1897 |
|
|
int pos = head->read_avail; |
1898 |
kumaneko |
1052 |
if (!ccs_io_printf(head, KEYWORD_ALLOW_SIGNAL "%u %s", |
1899 |
|
|
ptr->sig, ptr->domainname->name)) |
1900 |
|
|
goto out; |
1901 |
kumaneko |
1054 |
if (!ccs_print_condition(head, cond)) |
1902 |
kumaneko |
1052 |
goto out; |
1903 |
kumaneko |
1006 |
return true; |
1904 |
kumaneko |
856 |
out: |
1905 |
|
|
head->read_avail = pos; |
1906 |
kumaneko |
1006 |
return false; |
1907 |
kumaneko |
856 |
} |
1908 |
|
|
|
1909 |
kumaneko |
1052 |
/** |
1910 |
kumaneko |
2002 |
* ccs_print_execute_handler_record - Print an execute handler ACL entry. |
1911 |
kumaneko |
1052 |
* |
1912 |
|
|
* @head: Pointer to "struct ccs_io_buffer". |
1913 |
|
|
* @keyword: Name of the keyword. |
1914 |
kumaneko |
2002 |
* @ptr: Pointer to "struct ccs_execute_handler_record". |
1915 |
kumaneko |
1052 |
* |
1916 |
|
|
* Returns true on success, false otherwise. |
1917 |
|
|
*/ |
1918 |
kumaneko |
2002 |
static bool ccs_print_execute_handler_record(struct ccs_io_buffer *head, |
1919 |
|
|
const char *keyword, |
1920 |
|
|
struct ccs_execute_handler_record * |
1921 |
|
|
ptr) |
1922 |
kumaneko |
1029 |
{ |
1923 |
kumaneko |
1052 |
return ccs_io_printf(head, "%s %s\n", keyword, ptr->handler->name); |
1924 |
kumaneko |
1029 |
} |
1925 |
|
|
|
1926 |
kumaneko |
1052 |
/** |
1927 |
kumaneko |
2708 |
* ccs_print_mount_acl - Print a mount ACL entry. |
1928 |
|
|
* |
1929 |
|
|
* @head: Pointer to "struct ccs_io_buffer". |
1930 |
|
|
* @ptr: Pointer to "struct ccs_mount_acl_record". |
1931 |
|
|
* @cond: Pointer to "struct ccs_condition". May be NULL. |
1932 |
|
|
* |
1933 |
|
|
* Returns true on success, false otherwise. |
1934 |
|
|
*/ |
1935 |
|
|
static bool ccs_print_mount_acl(struct ccs_io_buffer *head, |
1936 |
|
|
struct ccs_mount_acl_record *ptr, |
1937 |
|
|
const struct ccs_condition *cond) |
1938 |
|
|
{ |
1939 |
|
|
int pos = head->read_avail; |
1940 |
|
|
if (!ccs_io_printf(head, KEYWORD_ALLOW_MOUNT "%s %s %s 0x%lX\n", |
1941 |
|
|
ptr->dev_name->name, ptr->dir_name->name, |
1942 |
|
|
ptr->fs_type->name, ptr->flags)) |
1943 |
|
|
goto out; |
1944 |
|
|
if (!ccs_print_condition(head, cond)) |
1945 |
|
|
goto out; |
1946 |
|
|
return true; |
1947 |
|
|
out: |
1948 |
|
|
head->read_avail = pos; |
1949 |
|
|
return false; |
1950 |
|
|
} |
1951 |
|
|
|
1952 |
|
|
/** |
1953 |
|
|
* ccs_print_umount_acl - Print a mount ACL entry. |
1954 |
|
|
* |
1955 |
|
|
* @head: Pointer to "struct ccs_io_buffer". |
1956 |
|
|
* @ptr: Pointer to "struct ccs_umount_acl_record". |
1957 |
|
|
* @cond: Pointer to "struct ccs_condition". May be NULL. |
1958 |
|
|
* |
1959 |
|
|
* Returns true on success, false otherwise. |
1960 |
|
|
*/ |
1961 |
|
|
static bool ccs_print_umount_acl(struct ccs_io_buffer *head, |
1962 |
|
|
struct ccs_umount_acl_record *ptr, |
1963 |
|
|
const struct ccs_condition *cond) |
1964 |
|
|
{ |
1965 |
|
|
int pos = head->read_avail; |
1966 |
|
|
if (!ccs_io_printf(head, KEYWORD_ALLOW_UNMOUNT "%s\n", |
1967 |
|
|
ptr->dir->name)) |
1968 |
|
|
goto out; |
1969 |
|
|
if (!ccs_print_condition(head, cond)) |
1970 |
|
|
goto out; |
1971 |
|
|
return true; |
1972 |
|
|
out: |
1973 |
|
|
head->read_avail = pos; |
1974 |
|
|
return false; |
1975 |
|
|
} |
1976 |
|
|
|
1977 |
|
|
/** |
1978 |
|
|
* ccs_print_chroot_acl - Print a chroot ACL entry. |
1979 |
|
|
* |
1980 |
|
|
* @head: Pointer to "struct ccs_io_buffer". |
1981 |
|
|
* @ptr: Pointer to "struct ccs_chroot_acl_record". |
1982 |
|
|
* @cond: Pointer to "struct ccs_condition". May be NULL. |
1983 |
|
|
* |
1984 |
|
|
* Returns true on success, false otherwise. |
1985 |
|
|
*/ |
1986 |
|
|
static bool ccs_print_chroot_acl(struct ccs_io_buffer *head, |
1987 |
|
|
struct ccs_chroot_acl_record *ptr, |
1988 |
|
|
const struct ccs_condition *cond) |
1989 |
|
|
{ |
1990 |
|
|
int pos = head->read_avail; |
1991 |
|
|
if (!ccs_io_printf(head, KEYWORD_ALLOW_CHROOT "%s\n", |
1992 |
|
|
ptr->dir->name)) |
1993 |
|
|
goto out; |
1994 |
|
|
if (!ccs_print_condition(head, cond)) |
1995 |
|
|
goto out; |
1996 |
|
|
return true; |
1997 |
|
|
out: |
1998 |
|
|
head->read_avail = pos; |
1999 |
|
|
return false; |
2000 |
|
|
} |
2001 |
|
|
|
2002 |
|
|
/** |
2003 |
|
|
* ccs_print_pivot_root_acl - Print a pivot_root ACL entry. |
2004 |
|
|
* |
2005 |
|
|
* @head: Pointer to "struct ccs_io_buffer". |
2006 |
|
|
* @ptr: Pointer to "struct ccs_pivot_root_acl_record". |
2007 |
|
|
* @cond: Pointer to "struct ccs_condition". May be NULL. |
2008 |
|
|
* |
2009 |
|
|
* Returns true on success, false otherwise. |
2010 |
|
|
*/ |
2011 |
|
|
static bool ccs_print_pivot_root_acl(struct ccs_io_buffer *head, |
2012 |
|
|
struct ccs_pivot_root_acl_record *ptr, |
2013 |
|
|
const struct ccs_condition *cond) |
2014 |
|
|
{ |
2015 |
|
|
int pos = head->read_avail; |
2016 |
|
|
if (!ccs_io_printf(head, KEYWORD_ALLOW_PIVOT_ROOT "%s %s\n", |
2017 |
|
|
ptr->new_root->name, ptr->old_root->name)) |
2018 |
|
|
goto out; |
2019 |
|
|
if (!ccs_print_condition(head, cond)) |
2020 |
|
|
goto out; |
2021 |
|
|
return true; |
2022 |
|
|
out: |
2023 |
|
|
head->read_avail = pos; |
2024 |
|
|
return false; |
2025 |
|
|
} |
2026 |
|
|
|
2027 |
|
|
/** |
2028 |
kumaneko |
2002 |
* ccs_print_entry - Print an ACL entry. |
2029 |
kumaneko |
1052 |
* |
2030 |
|
|
* @head: Pointer to "struct ccs_io_buffer". |
2031 |
|
|
* @ptr: Pointer to an ACL entry. |
2032 |
|
|
* |
2033 |
|
|
* Returns true on success, false otherwise. |
2034 |
|
|
*/ |
2035 |
kumaneko |
2002 |
static bool ccs_print_entry(struct ccs_io_buffer *head, |
2036 |
|
|
struct ccs_acl_info *ptr) |
2037 |
kumaneko |
111 |
{ |
2038 |
kumaneko |
2576 |
const struct ccs_condition *cond = ptr->cond; |
2039 |
kumaneko |
2692 |
const u8 acl_type = ccs_acl_type2(ptr); |
2040 |
kumaneko |
1052 |
if (acl_type & ACL_DELETED) |
2041 |
|
|
return true; |
2042 |
|
|
if (acl_type == TYPE_SINGLE_PATH_ACL) { |
2043 |
kumaneko |
2002 |
struct ccs_single_path_acl_record *acl |
2044 |
|
|
= container_of(ptr, struct ccs_single_path_acl_record, |
2045 |
kumaneko |
1052 |
head); |
2046 |
kumaneko |
2002 |
return ccs_print_single_path_acl(head, acl, cond); |
2047 |
kumaneko |
1052 |
} |
2048 |
kumaneko |
1926 |
if (acl_type == TYPE_EXECUTE_HANDLER) { |
2049 |
kumaneko |
2002 |
struct ccs_execute_handler_record *acl |
2050 |
|
|
= container_of(ptr, struct ccs_execute_handler_record, |
2051 |
kumaneko |
1926 |
head); |
2052 |
|
|
const char *keyword = KEYWORD_EXECUTE_HANDLER; |
2053 |
kumaneko |
2002 |
return ccs_print_execute_handler_record(head, keyword, acl); |
2054 |
kumaneko |
1926 |
} |
2055 |
|
|
if (acl_type == TYPE_DENIED_EXECUTE_HANDLER) { |
2056 |
kumaneko |
2002 |
struct ccs_execute_handler_record *acl |
2057 |
|
|
= container_of(ptr, struct ccs_execute_handler_record, |
2058 |
kumaneko |
1926 |
head); |
2059 |
|
|
const char *keyword = KEYWORD_DENIED_EXECUTE_HANDLER; |
2060 |
kumaneko |
2002 |
return ccs_print_execute_handler_record(head, keyword, acl); |
2061 |
kumaneko |
1926 |
} |
2062 |
|
|
if (head->read_execute_only) |
2063 |
|
|
return true; |
2064 |
kumaneko |
1052 |
if (acl_type == TYPE_DOUBLE_PATH_ACL) { |
2065 |
kumaneko |
2002 |
struct ccs_double_path_acl_record *acl |
2066 |
|
|
= container_of(ptr, struct ccs_double_path_acl_record, |
2067 |
kumaneko |
1052 |
head); |
2068 |
kumaneko |
2002 |
return ccs_print_double_path_acl(head, acl, cond); |
2069 |
kumaneko |
1052 |
} |
2070 |
kumaneko |
2271 |
if (acl_type == TYPE_IOCTL_ACL) { |
2071 |
|
|
struct ccs_ioctl_acl_record *acl |
2072 |
|
|
= container_of(ptr, struct ccs_ioctl_acl_record, head); |
2073 |
|
|
return ccs_print_ioctl_acl(head, acl, cond); |
2074 |
|
|
} |
2075 |
kumaneko |
1052 |
if (acl_type == TYPE_ARGV0_ACL) { |
2076 |
kumaneko |
2002 |
struct ccs_argv0_acl_record *acl |
2077 |
|
|
= container_of(ptr, struct ccs_argv0_acl_record, head); |
2078 |
|
|
return ccs_print_argv0_acl(head, acl, cond); |
2079 |
kumaneko |
1052 |
} |
2080 |
|
|
if (acl_type == TYPE_ENV_ACL) { |
2081 |
kumaneko |
2002 |
struct ccs_env_acl_record *acl |
2082 |
|
|
= container_of(ptr, struct ccs_env_acl_record, head); |
2083 |
|
|
return ccs_print_env_acl(head, acl, cond); |
2084 |
kumaneko |
1052 |
} |
2085 |
|
|
if (acl_type == TYPE_CAPABILITY_ACL) { |
2086 |
kumaneko |
2002 |
struct ccs_capability_acl_record *acl |
2087 |
|
|
= container_of(ptr, struct ccs_capability_acl_record, |
2088 |
|
|
head); |
2089 |
|
|
return ccs_print_capability_acl(head, acl, cond); |
2090 |
kumaneko |
1052 |
} |
2091 |
|
|
if (acl_type == TYPE_IP_NETWORK_ACL) { |
2092 |
kumaneko |
2002 |
struct ccs_ip_network_acl_record *acl |
2093 |
|
|
= container_of(ptr, struct ccs_ip_network_acl_record, |
2094 |
|
|
head); |
2095 |
|
|
return ccs_print_network_acl(head, acl, cond); |
2096 |
kumaneko |
1052 |
} |
2097 |
|
|
if (acl_type == TYPE_SIGNAL_ACL) { |
2098 |
kumaneko |
2002 |
struct ccs_signal_acl_record *acl |
2099 |
|
|
= container_of(ptr, struct ccs_signal_acl_record, head); |
2100 |
|
|
return ccs_print_signal_acl(head, acl, cond); |
2101 |
kumaneko |
1052 |
} |
2102 |
kumaneko |
2708 |
if (acl_type == TYPE_MOUNT_ACL) { |
2103 |
|
|
struct ccs_mount_acl_record *acl |
2104 |
|
|
= container_of(ptr, struct ccs_mount_acl_record, head); |
2105 |
|
|
return ccs_print_mount_acl(head, acl, cond); |
2106 |
|
|
} |
2107 |
|
|
if (acl_type == TYPE_UMOUNT_ACL) { |
2108 |
|
|
struct ccs_umount_acl_record *acl |
2109 |
|
|
= container_of(ptr, struct ccs_umount_acl_record, head); |
2110 |
|
|
return ccs_print_umount_acl(head, acl, cond); |
2111 |
|
|
} |
2112 |
|
|
if (acl_type == TYPE_CHROOT_ACL) { |
2113 |
|
|
struct ccs_chroot_acl_record *acl |
2114 |
|
|
= container_of(ptr, struct ccs_chroot_acl_record, head); |
2115 |
|
|
return ccs_print_chroot_acl(head, acl, cond); |
2116 |
|
|
} |
2117 |
|
|
if (acl_type == TYPE_PIVOT_ROOT_ACL) { |
2118 |
|
|
struct ccs_pivot_root_acl_record *acl |
2119 |
|
|
= container_of(ptr, struct ccs_pivot_root_acl_record, |
2120 |
|
|
head); |
2121 |
|
|
return ccs_print_pivot_root_acl(head, acl, cond); |
2122 |
|
|
} |
2123 |
kumaneko |
1120 |
/* Workaround for gcc 3.2.2's inline bug. */ |
2124 |
|
|
if (acl_type & ACL_DELETED) |
2125 |
|
|
return true; |
2126 |
kumaneko |
1052 |
BUG(); /* This must not happen. */ |
2127 |
|
|
return false; |
2128 |
|
|
} |
2129 |
|
|
|
2130 |
|
|
/** |
2131 |
kumaneko |
2002 |
* ccs_read_domain_policy - Read domain policy. |
2132 |
kumaneko |
1052 |
* |
2133 |
|
|
* @head: Pointer to "struct ccs_io_buffer". |
2134 |
|
|
* |
2135 |
|
|
* Returns 0. |
2136 |
kumaneko |
2701 |
* |
2137 |
|
|
* Caller holds srcu_read_lock(&ccs_ss). |
2138 |
kumaneko |
1052 |
*/ |
2139 |
kumaneko |
2002 |
static int ccs_read_domain_policy(struct ccs_io_buffer *head) |
2140 |
kumaneko |
1052 |
{ |
2141 |
kumaneko |
2540 |
struct list_head *dpos; |
2142 |
|
|
struct list_head *apos; |
2143 |
kumaneko |
1052 |
if (head->read_eof) |
2144 |
|
|
return 0; |
2145 |
|
|
if (head->read_step == 0) |
2146 |
|
|
head->read_step = 1; |
2147 |
kumaneko |
2690 |
list_for_each_cookie(dpos, head->read_var1, &ccs_domain_list) { |
2148 |
kumaneko |
2282 |
struct ccs_domain_info *domain; |
2149 |
kumaneko |
1052 |
const char *quota_exceeded = ""; |
2150 |
kumaneko |
1180 |
const char *transition_failed = ""; |
2151 |
kumaneko |
1052 |
const char *ignore_global_allow_read = ""; |
2152 |
|
|
const char *ignore_global_allow_env = ""; |
2153 |
kumaneko |
2540 |
domain = list_entry(dpos, struct ccs_domain_info, list); |
2154 |
kumaneko |
1052 |
if (head->read_step != 1) |
2155 |
|
|
goto acl_loop; |
2156 |
kumaneko |
1609 |
if (domain->is_deleted && !head->read_single_domain) |
2157 |
|
|
continue; |
2158 |
kumaneko |
1054 |
/* Print domainname and flags. */ |
2159 |
kumaneko |
1052 |
if (domain->quota_warned) |
2160 |
|
|
quota_exceeded = "quota_exceeded\n"; |
2161 |
kumaneko |
2540 |
if (domain->domain_transition_failed) |
2162 |
kumaneko |
1180 |
transition_failed = "transition_failed\n"; |
2163 |
kumaneko |
2540 |
if (domain->ignore_global_allow_read) |
2164 |
kumaneko |
1052 |
ignore_global_allow_read |
2165 |
|
|
= KEYWORD_IGNORE_GLOBAL_ALLOW_READ "\n"; |
2166 |
kumaneko |
2540 |
if (domain->ignore_global_allow_env) |
2167 |
kumaneko |
1052 |
ignore_global_allow_env |
2168 |
|
|
= KEYWORD_IGNORE_GLOBAL_ALLOW_ENV "\n"; |
2169 |
kumaneko |
1609 |
if (!ccs_io_printf(head, "%s\n" KEYWORD_USE_PROFILE "%u\n" |
2170 |
|
|
"%s%s%s%s\n", domain->domainname->name, |
2171 |
|
|
domain->profile, quota_exceeded, |
2172 |
|
|
transition_failed, |
2173 |
kumaneko |
1052 |
ignore_global_allow_read, |
2174 |
|
|
ignore_global_allow_env)) |
2175 |
|
|
return 0; |
2176 |
kumaneko |
708 |
head->read_step = 2; |
2177 |
kumaneko |
2041 |
acl_loop: |
2178 |
kumaneko |
1052 |
if (head->read_step == 3) |
2179 |
|
|
goto tail_mark; |
2180 |
kumaneko |
1054 |
/* Print ACL entries in the domain. */ |
2181 |
kumaneko |
2690 |
list_for_each_cookie(apos, head->read_var2, |
2182 |
|
|
&domain->acl_info_list) { |
2183 |
kumaneko |
2002 |
struct ccs_acl_info *ptr |
2184 |
kumaneko |
2540 |
= list_entry(apos, struct ccs_acl_info, list); |
2185 |
kumaneko |
2002 |
if (!ccs_print_entry(head, ptr)) |
2186 |
kumaneko |
1052 |
return 0; |
2187 |
kumaneko |
111 |
} |
2188 |
kumaneko |
708 |
head->read_step = 3; |
2189 |
kumaneko |
2041 |
tail_mark: |
2190 |
kumaneko |
1052 |
if (!ccs_io_printf(head, "\n")) |
2191 |
|
|
return 0; |
2192 |
kumaneko |
708 |
head->read_step = 1; |
2193 |
kumaneko |
1606 |
if (head->read_single_domain) |
2194 |
|
|
break; |
2195 |
kumaneko |
111 |
} |
2196 |
kumaneko |
1006 |
head->read_eof = true; |
2197 |
kumaneko |
111 |
return 0; |
2198 |
|
|
} |
2199 |
|
|
|
2200 |
kumaneko |
1052 |
/** |
2201 |
kumaneko |
2002 |
* ccs_write_domain_profile - Assign profile for specified domain. |
2202 |
kumaneko |
1052 |
* |
2203 |
|
|
* @head: Pointer to "struct ccs_io_buffer". |
2204 |
|
|
* |
2205 |
|
|
* Returns 0 on success, -EINVAL otherwise. |
2206 |
kumaneko |
2692 |
* |
2207 |
|
|
* This is equivalent to doing |
2208 |
|
|
* |
2209 |
|
|
* ( echo "select " $domainname; echo "use_profile " $profile ) | |
2210 |
|
|
* /usr/lib/ccs/loadpolicy -d |
2211 |
kumaneko |
2701 |
* |
2212 |
|
|
* Caller holds srcu_read_lock(&ccs_ss). |
2213 |
kumaneko |
1052 |
*/ |
2214 |
kumaneko |
2002 |
static int ccs_write_domain_profile(struct ccs_io_buffer *head) |
2215 |
kumaneko |
461 |
{ |
2216 |
|
|
char *data = head->write_buf; |
2217 |
|
|
char *cp = strchr(data, ' '); |
2218 |
kumaneko |
2690 |
struct ccs_domain_info *domain; |
2219 |
kumaneko |
461 |
unsigned int profile; |
2220 |
kumaneko |
1052 |
if (!cp) |
2221 |
|
|
return -EINVAL; |
2222 |
kumaneko |
461 |
*cp = '\0'; |
2223 |
|
|
profile = simple_strtoul(data, NULL, 10); |
2224 |
kumaneko |
2540 |
if (profile >= MAX_PROFILES) |
2225 |
|
|
return -EINVAL; |
2226 |
kumaneko |
2690 |
domain = ccs_find_domain(cp + 1); |
2227 |
|
|
if (domain && (ccs_profile_ptr[profile] || !ccs_policy_loaded)) |
2228 |
|
|
domain->profile = (u8) profile; |
2229 |
kumaneko |
461 |
return 0; |
2230 |
|
|
} |
2231 |
|
|
|
2232 |
kumaneko |
1052 |
/** |
2233 |
kumaneko |
2002 |
* ccs_read_domain_profile - Read only domainname and profile. |
2234 |
kumaneko |
1052 |
* |
2235 |
|
|
* @head: Pointer to "struct ccs_io_buffer". |
2236 |
|
|
* |
2237 |
|
|
* Returns list of profile number and domainname pairs. |
2238 |
kumaneko |
2692 |
* |
2239 |
|
|
* This is equivalent to doing |
2240 |
|
|
* |
2241 |
|
|
* grep -A 1 '^<kernel>' /proc/ccs/domain_policy | |
2242 |
|
|
* awk ' { if ( domainname == "" ) { if ( $1 == "<kernel>" ) |
2243 |
|
|
* domainname = $0; } else if ( $1 == "use_profile" ) { |
2244 |
|
|
* print $2 " " domainname; domainname = ""; } } ; ' |
2245 |
kumaneko |
2701 |
* |
2246 |
|
|
* Caller holds srcu_read_lock(&ccs_ss). |
2247 |
kumaneko |
1052 |
*/ |
2248 |
kumaneko |
2002 |
static int ccs_read_domain_profile(struct ccs_io_buffer *head) |
2249 |
kumaneko |
111 |
{ |
2250 |
kumaneko |
2540 |
struct list_head *pos; |
2251 |
kumaneko |
1052 |
if (head->read_eof) |
2252 |
|
|
return 0; |
2253 |
kumaneko |
2690 |
list_for_each_cookie(pos, head->read_var1, &ccs_domain_list) { |
2254 |
kumaneko |
2282 |
struct ccs_domain_info *domain; |
2255 |
kumaneko |
2540 |
domain = list_entry(pos, struct ccs_domain_info, list); |
2256 |
kumaneko |
1052 |
|