3 |
* |
* |
4 |
* Common functions for SAKURA and TOMOYO. |
* Common functions for SAKURA and TOMOYO. |
5 |
* |
* |
6 |
* Copyright (C) 2005-2007 NTT DATA CORPORATION |
* Copyright (C) 2005-2009 NTT DATA CORPORATION |
7 |
* |
* |
8 |
* Version: 1.5.3-pre 2007/12/18 |
* Version: 1.7.0-pre 2009/07/03 |
9 |
* |
* |
10 |
* This file is applicable to both 2.4.30 and 2.6.11 and later. |
* This file is applicable to both 2.4.30 and 2.6.11 and later. |
11 |
* See README.ccs for ChangeLog. |
* See README.ccs for ChangeLog. |
12 |
* |
* |
13 |
*/ |
*/ |
14 |
|
|
15 |
|
#include <linux/version.h> |
16 |
|
#if LINUX_VERSION_CODE < KERNEL_VERSION(2, 5, 0) |
17 |
|
#define __KERNEL_SYSCALLS__ |
18 |
|
#endif |
19 |
#include <linux/string.h> |
#include <linux/string.h> |
20 |
#include <linux/mm.h> |
#include <linux/mm.h> |
21 |
#include <linux/utime.h> |
#include <linux/utime.h> |
24 |
#include <linux/slab.h> |
#include <linux/slab.h> |
25 |
#include <asm/uaccess.h> |
#include <asm/uaccess.h> |
26 |
#include <stdarg.h> |
#include <stdarg.h> |
27 |
#include <linux/version.h> |
#if LINUX_VERSION_CODE >= KERNEL_VERSION(2, 5, 0) |
|
#if LINUX_VERSION_CODE >= KERNEL_VERSION(2,5,0) |
|
28 |
#include <linux/namei.h> |
#include <linux/namei.h> |
29 |
#include <linux/mount.h> |
#include <linux/mount.h> |
30 |
static const int lookup_flags = LOOKUP_FOLLOW; |
static const int ccs_lookup_flags = LOOKUP_FOLLOW; |
31 |
#else |
#else |
32 |
static const int lookup_flags = LOOKUP_FOLLOW | LOOKUP_POSITIVE; |
static const int ccs_lookup_flags = LOOKUP_FOLLOW | LOOKUP_POSITIVE; |
33 |
|
#endif |
34 |
|
#if LINUX_VERSION_CODE < KERNEL_VERSION(2, 5, 0) |
35 |
|
#include <linux/unistd.h> |
36 |
#endif |
#endif |
|
#include <linux/realpath.h> |
|
37 |
#include <linux/ccs_common.h> |
#include <linux/ccs_common.h> |
|
#include <linux/ccs_proc.h> |
|
38 |
#include <linux/tomoyo.h> |
#include <linux/tomoyo.h> |
39 |
|
|
40 |
#ifdef CONFIG_TOMOYO_MAX_ACCEPT_ENTRY |
/* To support PID namespace. */ |
41 |
#define MAX_ACCEPT_ENTRY (CONFIG_TOMOYO_MAX_ACCEPT_ENTRY) |
#if LINUX_VERSION_CODE >= KERNEL_VERSION(2, 6, 24) |
42 |
#else |
#define find_task_by_pid find_task_by_vpid |
|
#define MAX_ACCEPT_ENTRY 2048 |
|
|
#endif |
|
|
#ifdef CONFIG_TOMOYO_MAX_GRANT_LOG |
|
|
#define MAX_GRANT_LOG (CONFIG_TOMOYO_MAX_GRANT_LOG) |
|
|
#else |
|
|
#define MAX_GRANT_LOG 1024 |
|
|
#endif |
|
|
#ifdef CONFIG_TOMOYO_MAX_REJECT_LOG |
|
|
#define MAX_REJECT_LOG (CONFIG_TOMOYO_MAX_REJECT_LOG) |
|
|
#else |
|
|
#define MAX_REJECT_LOG 1024 |
|
43 |
#endif |
#endif |
44 |
|
|
45 |
/************************* VARIABLES *************************/ |
/* Set default specified by the kernel config. */ |
46 |
|
#define MAX_ACCEPT_ENTRY (CONFIG_CCSECURITY_MAX_ACCEPT_ENTRY) |
47 |
|
#define MAX_GRANT_LOG (CONFIG_CCSECURITY_MAX_GRANT_LOG) |
48 |
|
#define MAX_REJECT_LOG (CONFIG_CCSECURITY_MAX_REJECT_LOG) |
49 |
|
|
50 |
/* /sbin/init started? */ |
DEFINE_MUTEX(ccs_policy_lock); |
|
int sbin_init_started = 0; |
|
51 |
|
|
52 |
|
/* Has /sbin/init started? */ |
53 |
|
bool ccs_policy_loaded; |
54 |
|
|
55 |
|
/* Log level for SAKURA's printk(). */ |
56 |
const char *ccs_log_level = KERN_DEBUG; |
const char *ccs_log_level = KERN_DEBUG; |
57 |
|
|
58 |
|
/* String table for functionality that takes 4 modes. */ |
59 |
|
static const char *ccs_mode_4[4] = { |
60 |
|
"disabled", "learning", "permissive", "enforcing" |
61 |
|
}; |
62 |
|
/* String table for functionality that takes 2 modes. */ |
63 |
|
static const char *ccs_mode_2[4] = { |
64 |
|
"disabled", "enabled", "enabled", "enabled" |
65 |
|
}; |
66 |
|
|
67 |
|
/* Table for profile. */ |
68 |
static struct { |
static struct { |
69 |
const char *keyword; |
const char *keyword; |
70 |
unsigned int current_value; |
unsigned int current_value; |
71 |
const unsigned int max_value; |
const unsigned int max_value; |
72 |
} ccs_control_array[CCS_MAX_CONTROL_INDEX] = { |
} ccs_control_array[CCS_MAX_CONTROL_INDEX] = { |
73 |
[CCS_PROFILE_COMMENT] = { "COMMENT", 0, 0 }, /* Reserved for string. */ |
[CCS_MAC_FOR_FILE] = { "MAC_FOR_FILE", 0, 3 }, |
74 |
[CCS_TOMOYO_MAC_FOR_FILE] = { "MAC_FOR_FILE", 0, 3 }, |
[CCS_MAC_FOR_IOCTL] = { "MAC_FOR_IOCTL", 0, 3 }, |
75 |
[CCS_TOMOYO_MAC_FOR_ARGV0] = { "MAC_FOR_ARGV0", 0, 3 }, |
[CCS_MAC_FOR_ARGV0] = { "MAC_FOR_ARGV0", 0, 3 }, |
76 |
[CCS_TOMOYO_MAC_FOR_ENV] = { "MAC_FOR_ENV", 0, 3 }, |
[CCS_MAC_FOR_ENV] = { "MAC_FOR_ENV", 0, 3 }, |
77 |
[CCS_TOMOYO_MAC_FOR_NETWORK] = { "MAC_FOR_NETWORK", 0, 3 }, |
[CCS_MAC_FOR_NETWORK] = { "MAC_FOR_NETWORK", 0, 3 }, |
78 |
[CCS_TOMOYO_MAC_FOR_SIGNAL] = { "MAC_FOR_SIGNAL", 0, 3 }, |
[CCS_MAC_FOR_SIGNAL] = { "MAC_FOR_SIGNAL", 0, 3 }, |
79 |
[CCS_SAKURA_DENY_CONCEAL_MOUNT] = { "DENY_CONCEAL_MOUNT", 0, 3 }, |
[CCS_MAC_FOR_NAMESPACE] = { "MAC_FOR_NAMESPACE", 0, 3 }, |
80 |
[CCS_SAKURA_RESTRICT_CHROOT] = { "RESTRICT_CHROOT", 0, 3 }, |
[CCS_RESTRICT_AUTOBIND] = { "RESTRICT_AUTOBIND", 0, 1 }, |
81 |
[CCS_SAKURA_RESTRICT_MOUNT] = { "RESTRICT_MOUNT", 0, 3 }, |
[CCS_MAX_ACCEPT_ENTRY] |
82 |
[CCS_SAKURA_RESTRICT_UNMOUNT] = { "RESTRICT_UNMOUNT", 0, 3 }, |
= { "MAX_ACCEPT_ENTRY", MAX_ACCEPT_ENTRY, INT_MAX }, |
83 |
[CCS_SAKURA_RESTRICT_PIVOT_ROOT] = { "RESTRICT_PIVOT_ROOT", 0, 3 }, |
#ifdef CONFIG_CCSECURITY_AUDIT |
84 |
[CCS_SAKURA_RESTRICT_AUTOBIND] = { "RESTRICT_AUTOBIND", 0, 1 }, |
[CCS_MAX_GRANT_LOG] |
85 |
[CCS_TOMOYO_MAX_ACCEPT_ENTRY] = { "MAX_ACCEPT_ENTRY", MAX_ACCEPT_ENTRY, INT_MAX }, |
= { "MAX_GRANT_LOG", MAX_GRANT_LOG, INT_MAX }, |
86 |
[CCS_TOMOYO_MAX_GRANT_LOG] = { "MAX_GRANT_LOG", MAX_GRANT_LOG, INT_MAX }, |
[CCS_MAX_REJECT_LOG] |
87 |
[CCS_TOMOYO_MAX_REJECT_LOG] = { "MAX_REJECT_LOG", MAX_REJECT_LOG, INT_MAX }, |
= { "MAX_REJECT_LOG", MAX_REJECT_LOG, INT_MAX }, |
88 |
[CCS_TOMOYO_VERBOSE] = { "TOMOYO_VERBOSE", 1, 1 }, |
#endif |
89 |
[CCS_ALLOW_ENFORCE_GRACE] = { "ALLOW_ENFORCE_GRACE", 0, 1 }, |
[CCS_VERBOSE] = { "TOMOYO_VERBOSE", 1, 1 }, |
90 |
[CCS_SLEEP_PERIOD] = { "SLEEP_PERIOD", 0, 3000 }, /* in 0.1 second */ |
[CCS_SLEEP_PERIOD] |
91 |
[CCS_TOMOYO_ALT_EXEC] = { "ALT_EXEC", 0, 0 }, /* Reserved for string. */ |
= { "SLEEP_PERIOD", 0, 3000 }, /* in 0.1 second */ |
92 |
}; |
}; |
93 |
|
|
94 |
struct profile { |
/* Capability name used by domain policy. */ |
95 |
unsigned int value[CCS_MAX_CONTROL_INDEX]; |
static const char *ccs_capability_control_keyword[CCS_MAX_CAPABILITY_INDEX] |
96 |
const struct path_info *comment; |
= { |
97 |
const struct path_info *alt_exec; |
[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 |
|
[CCS_CONCEAL_MOUNT] = "conceal_mount", |
129 |
}; |
}; |
130 |
|
|
131 |
static struct profile *profile_ptr[MAX_PROFILES]; |
static bool ccs_profile_entry_used[CCS_MAX_CONTROL_INDEX + |
132 |
|
CCS_MAX_CAPABILITY_INDEX + 1]; |
133 |
|
|
134 |
|
/* Profile table. Memory is allocated as needed. */ |
135 |
|
static struct ccs_profile { |
136 |
|
unsigned int value[CCS_MAX_CONTROL_INDEX]; |
137 |
|
const struct ccs_path_info *comment; |
138 |
|
unsigned char capability_value[CCS_MAX_CAPABILITY_INDEX]; |
139 |
|
} *ccs_profile_ptr[MAX_PROFILES]; |
140 |
|
|
141 |
|
/* Permit policy management by non-root user? */ |
142 |
|
static bool ccs_manage_by_non_root; |
143 |
|
|
144 |
/************************* UTILITY FUNCTIONS *************************/ |
/* Utility functions. */ |
145 |
|
|
146 |
#ifdef CONFIG_TOMOYO |
/** |
147 |
static int __init TOMOYO_Quiet_Setup(char *str) |
* ccs_quiet_setup - Set CCS_VERBOSE=0 by default. |
148 |
|
* |
149 |
|
* @str: Unused. |
150 |
|
* |
151 |
|
* Returns 0. |
152 |
|
*/ |
153 |
|
static int __init ccs_quiet_setup(char *str) |
154 |
{ |
{ |
155 |
ccs_control_array[CCS_TOMOYO_VERBOSE].current_value = 0; |
ccs_control_array[CCS_VERBOSE].current_value = 0; |
156 |
return 0; |
return 0; |
157 |
} |
} |
158 |
|
|
159 |
__setup("TOMOYO_QUIET", TOMOYO_Quiet_Setup); |
__setup("CCS_QUIET", ccs_quiet_setup); |
|
#endif |
|
160 |
|
|
161 |
/* Am I root? */ |
/** |
162 |
static int isRoot(void) |
* ccs_is_byte_range - Check whether the string isa \ooo style octal value. |
163 |
|
* |
164 |
|
* @str: Pointer to the string. |
165 |
|
* |
166 |
|
* Returns true if @str is a \ooo style octal value, false otherwise. |
167 |
|
*/ |
168 |
|
static inline bool ccs_is_byte_range(const char *str) |
169 |
{ |
{ |
170 |
return !current->uid && !current->euid; |
return *str >= '0' && *str++ <= '3' && |
171 |
|
*str >= '0' && *str++ <= '7' && |
172 |
|
*str >= '0' && *str <= '7'; |
173 |
} |
} |
174 |
|
|
175 |
/* |
/** |
176 |
* Format string. |
* ccs_is_decimal - Check whether the character is a decimal character. |
177 |
|
* |
178 |
|
* @c: The character to check. |
179 |
|
* |
180 |
|
* Returns true if @c is a decimal character, false otherwise. |
181 |
|
*/ |
182 |
|
static inline bool ccs_is_decimal(const char c) |
183 |
|
{ |
184 |
|
return c >= '0' && c <= '9'; |
185 |
|
} |
186 |
|
|
187 |
|
/** |
188 |
|
* ccs_is_hexadecimal - Check whether the character is a hexadecimal character. |
189 |
|
* |
190 |
|
* @c: The character to check. |
191 |
|
* |
192 |
|
* Returns true if @c is a hexadecimal character, false otherwise. |
193 |
|
*/ |
194 |
|
static inline bool ccs_is_hexadecimal(const char c) |
195 |
|
{ |
196 |
|
return (c >= '0' && c <= '9') || |
197 |
|
(c >= 'A' && c <= 'F') || |
198 |
|
(c >= 'a' && c <= 'f'); |
199 |
|
} |
200 |
|
|
201 |
|
/** |
202 |
|
* ccs_is_alphabet_char - Check whether the character is an alphabet. |
203 |
|
* |
204 |
|
* @c: The character to check. |
205 |
|
* |
206 |
|
* Returns true if @c is an alphabet character, false otherwise. |
207 |
|
*/ |
208 |
|
static inline bool ccs_is_alphabet_char(const char c) |
209 |
|
{ |
210 |
|
return (c >= 'A' && c <= 'Z') || (c >= 'a' && c <= 'z'); |
211 |
|
} |
212 |
|
|
213 |
|
/** |
214 |
|
* ccs_make_byte - Make byte value from three octal characters. |
215 |
|
* |
216 |
|
* @c1: The first character. |
217 |
|
* @c2: The second character. |
218 |
|
* @c3: The third character. |
219 |
|
* |
220 |
|
* Returns byte value. |
221 |
|
*/ |
222 |
|
static inline u8 ccs_make_byte(const u8 c1, const u8 c2, const u8 c3) |
223 |
|
{ |
224 |
|
return ((c1 - '0') << 6) + ((c2 - '0') << 3) + (c3 - '0'); |
225 |
|
} |
226 |
|
|
227 |
|
/** |
228 |
|
* ccs_str_starts - Check whether the given string starts with the given keyword. |
229 |
|
* |
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 |
|
* if @src starts with @find. |
237 |
|
*/ |
238 |
|
static bool ccs_str_starts(char **src, const char *find) |
239 |
|
{ |
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 |
|
* ccs_normalize_line - Format string. |
251 |
|
* |
252 |
|
* @buffer: The line to normalize. |
253 |
|
* |
254 |
* Leading and trailing whitespaces are removed. |
* Leading and trailing whitespaces are removed. |
255 |
* Multiple whitespaces are packed into single space. |
* Multiple whitespaces are packed into single space. |
256 |
|
* |
257 |
|
* Returns nothing. |
258 |
*/ |
*/ |
259 |
static void NormalizeLine(unsigned char *buffer) |
void ccs_normalize_line(unsigned char *buffer) |
260 |
{ |
{ |
261 |
unsigned char *sp = buffer, *dp = buffer; |
unsigned char *sp = buffer; |
262 |
int first = 1; |
unsigned char *dp = buffer; |
263 |
while (*sp && (*sp <= ' ' || *sp >= 127)) sp++; |
bool first = true; |
264 |
|
while (*sp && (*sp <= ' ' || *sp >= 127)) |
265 |
|
sp++; |
266 |
while (*sp) { |
while (*sp) { |
267 |
if (!first) *dp++ = ' '; |
if (!first) |
268 |
first = 0; |
*dp++ = ' '; |
269 |
while (*sp > ' ' && *sp < 127) *dp++ = *sp++; |
first = false; |
270 |
while (*sp && (*sp <= ' ' || *sp >= 127)) sp++; |
while (*sp > ' ' && *sp < 127) |
271 |
|
*dp++ = *sp++; |
272 |
|
while (*sp && (*sp <= ' ' || *sp >= 127)) |
273 |
|
sp++; |
274 |
} |
} |
275 |
*dp = '\0'; |
*dp = '\0'; |
276 |
} |
} |
277 |
|
|
278 |
/* |
/** |
279 |
* Check whether the given filename follows the naming rules. |
* ccs_tokenize - Tokenize string. |
280 |
* Returns nonzero if follows, zero otherwise. |
* |
281 |
|
* @buffer: The line to tokenize. |
282 |
|
* @w: Pointer to "char *". |
283 |
|
* @size: Sizeof @w . |
284 |
|
* |
285 |
|
* Returns true on success, false otherwise. |
286 |
*/ |
*/ |
287 |
bool IsCorrectPath(const char *filename, const int start_type, const int pattern_type, const int end_type, const char *function) |
bool ccs_tokenize(char *buffer, char *w[], size_t size) |
288 |
{ |
{ |
289 |
int contains_pattern = 0; |
int count = size / sizeof(char *); |
290 |
char c, d, e; |
int i; |
291 |
|
for (i = 0; i < count; i++) |
292 |
|
w[i] = ""; |
293 |
|
for (i = 0; i < count; i++) { |
294 |
|
char *cp = strchr(buffer, ' '); |
295 |
|
if (cp) |
296 |
|
*cp = '\0'; |
297 |
|
w[i] = buffer; |
298 |
|
if (!cp) |
299 |
|
break; |
300 |
|
buffer = cp + 1; |
301 |
|
} |
302 |
|
return i < count || !*buffer; |
303 |
|
} |
304 |
|
|
305 |
|
/** |
306 |
|
* ccs_is_correct_path - Validate a pathname. |
307 |
|
* @filename: The pathname to check. |
308 |
|
* @start_type: Should the pathname start with '/'? |
309 |
|
* 1 = must / -1 = must not / 0 = don't care |
310 |
|
* @pattern_type: Can the pathname contain a wildcard? |
311 |
|
* 1 = must / -1 = must not / 0 = don't care |
312 |
|
* @end_type: Should the pathname end with '/'? |
313 |
|
* 1 = must / -1 = must not / 0 = don't care |
314 |
|
* |
315 |
|
* Check whether the given filename follows the naming rules. |
316 |
|
* Returns true if @filename follows the naming rules, false otherwise. |
317 |
|
*/ |
318 |
|
bool ccs_is_correct_path(const char *filename, const s8 start_type, |
319 |
|
const s8 pattern_type, const s8 end_type) |
320 |
|
{ |
321 |
|
bool contains_pattern = false; |
322 |
|
unsigned char c; |
323 |
|
unsigned char d; |
324 |
|
unsigned char e; |
325 |
const char *original_filename = filename; |
const char *original_filename = filename; |
326 |
if (!filename) goto out; |
if (!filename) |
327 |
|
goto out; |
328 |
c = *filename; |
c = *filename; |
329 |
if (start_type == 1) { /* Must start with '/' */ |
if (start_type == 1) { /* Must start with '/' */ |
330 |
if (c != '/') goto out; |
if (c != '/') |
331 |
|
goto out; |
332 |
} else if (start_type == -1) { /* Must not start with '/' */ |
} else if (start_type == -1) { /* Must not start with '/' */ |
333 |
if (c == '/') goto out; |
if (c == '/') |
334 |
|
goto out; |
335 |
} |
} |
336 |
if (c) c = * (strchr(filename, '\0') - 1); |
if (c) |
337 |
|
c = *(filename + strlen(filename) - 1); |
338 |
if (end_type == 1) { /* Must end with '/' */ |
if (end_type == 1) { /* Must end with '/' */ |
339 |
if (c != '/') goto out; |
if (c != '/') |
340 |
|
goto out; |
341 |
} else if (end_type == -1) { /* Must not end with '/' */ |
} else if (end_type == -1) { /* Must not end with '/' */ |
342 |
if (c == '/') goto out; |
if (c == '/') |
343 |
|
goto out; |
344 |
} |
} |
345 |
while ((c = *filename++) != '\0') { |
while (1) { |
346 |
|
c = *filename++; |
347 |
|
if (!c) |
348 |
|
break; |
349 |
if (c == '\\') { |
if (c == '\\') { |
350 |
switch ((c = *filename++)) { |
c = *filename++; |
351 |
|
switch (c) { |
352 |
case '\\': /* "\\" */ |
case '\\': /* "\\" */ |
353 |
continue; |
continue; |
354 |
case '$': /* "\$" */ |
case '$': /* "\$" */ |
361 |
case 'a': /* "\a" */ |
case 'a': /* "\a" */ |
362 |
case 'A': /* "\A" */ |
case 'A': /* "\A" */ |
363 |
case '-': /* "\-" */ |
case '-': /* "\-" */ |
364 |
if (pattern_type == -1) break; /* Must not contain pattern */ |
if (pattern_type == -1) |
365 |
contains_pattern = 1; |
break; /* Must not contain pattern */ |
366 |
|
contains_pattern = true; |
367 |
continue; |
continue; |
368 |
case '0': /* "\ooo" */ |
case '0': /* "\ooo" */ |
369 |
case '1': |
case '1': |
370 |
case '2': |
case '2': |
371 |
case '3': |
case '3': |
372 |
if ((d = *filename++) >= '0' && d <= '7' && (e = *filename++) >= '0' && e <= '7') { |
d = *filename++; |
373 |
const unsigned char f = |
if (d < '0' || d > '7') |
374 |
(((unsigned char) (c - '0')) << 6) + |
break; |
375 |
(((unsigned char) (d - '0')) << 3) + |
e = *filename++; |
376 |
(((unsigned char) (e - '0'))); |
if (e < '0' || e > '7') |
377 |
if (f && (f <= ' ' || f >= 127)) continue; /* pattern is not \000 */ |
break; |
378 |
} |
c = ccs_make_byte(c, d, e); |
379 |
|
if (c && (c <= ' ' || c >= 127)) |
380 |
|
continue; /* pattern is not \000 */ |
381 |
} |
} |
382 |
goto out; |
goto out; |
383 |
} else if (c <= ' ' || c >= 127) { |
} else if (c <= ' ' || c >= 127) { |
385 |
} |
} |
386 |
} |
} |
387 |
if (pattern_type == 1) { /* Must contain pattern */ |
if (pattern_type == 1) { /* Must contain pattern */ |
388 |
if (!contains_pattern) goto out; |
if (!contains_pattern) |
389 |
|
goto out; |
390 |
} |
} |
391 |
return 1; |
return true; |
392 |
out: |
out: |
393 |
printk(KERN_DEBUG "%s: Invalid pathname '%s'\n", function, original_filename); |
printk(KERN_DEBUG "Invalid pathname '%s'\n", original_filename); |
394 |
return 0; |
return false; |
395 |
} |
} |
396 |
|
|
397 |
/* |
/** |
398 |
* Check whether the given domainname follows the naming rules. |
* ccs_is_correct_domain - Check whether the given domainname follows the naming rules. |
399 |
* Returns nonzero if follows, zero otherwise. |
* @domainname: The domainname to check. |
400 |
|
* |
401 |
|
* Returns true if @domainname follows the naming rules, false otherwise. |
402 |
*/ |
*/ |
403 |
bool IsCorrectDomain(const unsigned char *domainname, const char *function) |
bool ccs_is_correct_domain(const unsigned char *domainname) |
404 |
{ |
{ |
405 |
unsigned char c, d, e; |
unsigned char c; |
406 |
|
unsigned char d; |
407 |
|
unsigned char e; |
408 |
const char *org_domainname = domainname; |
const char *org_domainname = domainname; |
409 |
if (!domainname || strncmp(domainname, ROOT_NAME, ROOT_NAME_LEN)) goto out; |
if (!domainname || strncmp(domainname, ROOT_NAME, ROOT_NAME_LEN)) |
410 |
|
goto out; |
411 |
domainname += ROOT_NAME_LEN; |
domainname += ROOT_NAME_LEN; |
412 |
if (!*domainname) return 1; |
if (!*domainname) |
413 |
|
return true; |
414 |
do { |
do { |
415 |
if (*domainname++ != ' ') goto out; |
if (*domainname++ != ' ') |
416 |
if (*domainname++ != '/') goto out; |
goto out; |
417 |
while ((c = *domainname) != '\0' && c != ' ') { |
if (*domainname++ != '/') |
418 |
|
goto out; |
419 |
|
while (1) { |
420 |
|
c = *domainname; |
421 |
|
if (!c || c == ' ') |
422 |
|
break; |
423 |
domainname++; |
domainname++; |
424 |
if (c == '\\') { |
if (c == '\\') { |
425 |
switch ((c = *domainname++)) { |
c = *domainname++; |
426 |
|
switch ((c)) { |
427 |
case '\\': /* "\\" */ |
case '\\': /* "\\" */ |
428 |
continue; |
continue; |
429 |
case '0': /* "\ooo" */ |
case '0': /* "\ooo" */ |
430 |
case '1': |
case '1': |
431 |
case '2': |
case '2': |
432 |
case '3': |
case '3': |
433 |
if ((d = *domainname++) >= '0' && d <= '7' && (e = *domainname++) >= '0' && e <= '7') { |
d = *domainname++; |
434 |
const unsigned char f = |
if (d < '0' || d > '7') |
435 |
(((unsigned char) (c - '0')) << 6) + |
break; |
436 |
(((unsigned char) (d - '0')) << 3) + |
e = *domainname++; |
437 |
(((unsigned char) (e - '0'))); |
if (e < '0' || e > '7') |
438 |
if (f && (f <= ' ' || f >= 127)) continue; /* pattern is not \000 */ |
break; |
439 |
} |
c = ccs_make_byte(c, d, e); |
440 |
|
if (c && (c <= ' ' || c >= 127)) |
441 |
|
/* pattern is not \000 */ |
442 |
|
continue; |
443 |
} |
} |
444 |
goto out; |
goto out; |
445 |
} else if (c < ' ' || c >= 127) { |
} else if (c < ' ' || c >= 127) { |
447 |
} |
} |
448 |
} |
} |
449 |
} while (*domainname); |
} while (*domainname); |
450 |
return 1; |
return true; |
451 |
out: |
out: |
452 |
printk(KERN_DEBUG "%s: Invalid domainname '%s'\n", function, org_domainname); |
printk(KERN_DEBUG "Invalid domainname '%s'\n", org_domainname); |
453 |
return 0; |
return false; |
454 |
} |
} |
455 |
|
|
456 |
bool IsDomainDef(const unsigned char *buffer) |
/** |
457 |
|
* ccs_is_domain_def - Check whether the given token can be a domainname. |
458 |
|
* |
459 |
|
* @buffer: The token to check. |
460 |
|
* |
461 |
|
* Returns true if @buffer possibly be a domainname, false otherwise. |
462 |
|
*/ |
463 |
|
bool ccs_is_domain_def(const unsigned char *buffer) |
464 |
{ |
{ |
465 |
/* while (*buffer && (*buffer <= ' ' || *buffer >= 127)) buffer++; */ |
return !strncmp(buffer, ROOT_NAME, ROOT_NAME_LEN); |
|
return strncmp(buffer, ROOT_NAME, ROOT_NAME_LEN) == 0; |
|
466 |
} |
} |
467 |
|
|
468 |
struct domain_info *FindDomain(const char *domainname0) |
/** |
469 |
|
* ccs_find_domain - Find a domain by the given name. |
470 |
|
* |
471 |
|
* @domainname: The domainname to find. |
472 |
|
* |
473 |
|
* Returns pointer to "struct ccs_domain_info" if found, NULL otherwise. |
474 |
|
* |
475 |
|
* Caller holds srcu_read_lock(&ccs_ss). |
476 |
|
*/ |
477 |
|
struct ccs_domain_info *ccs_find_domain(const char *domainname) |
478 |
{ |
{ |
479 |
struct domain_info *domain; |
struct ccs_domain_info *domain; |
480 |
struct path_info domainname; |
struct ccs_path_info name; |
481 |
domainname.name = domainname0; |
name.name = domainname; |
482 |
fill_path_info(&domainname); |
ccs_fill_path_info(&name); |
483 |
list1_for_each_entry(domain, &domain_list, list) { |
list_for_each_entry_rcu(domain, &ccs_domain_list, list) { |
484 |
if (!domain->is_deleted && !pathcmp(&domainname, domain->domainname)) return domain; |
if (!domain->is_deleted && |
485 |
|
!ccs_pathcmp(&name, domain->domainname)) |
486 |
|
return domain; |
487 |
} |
} |
488 |
return NULL; |
return NULL; |
489 |
} |
} |
490 |
|
|
491 |
static int PathDepth(const char *pathname) |
/** |
492 |
|
* ccs_path_depth - Evaluate the number of '/' in a string. |
493 |
|
* |
494 |
|
* @pathname: The string to evaluate. |
495 |
|
* |
496 |
|
* Returns path depth of the string. |
497 |
|
* |
498 |
|
* I score 2 for each of the '/' in the @pathname |
499 |
|
* and score 1 if the @pathname ends with '/'. |
500 |
|
*/ |
501 |
|
static int ccs_path_depth(const char *pathname) |
502 |
{ |
{ |
503 |
int i = 0; |
int i = 0; |
504 |
if (pathname) { |
if (pathname) { |
505 |
char *ep = strchr(pathname, '\0'); |
const char *ep = pathname + strlen(pathname); |
506 |
if (pathname < ep--) { |
if (pathname < ep--) { |
507 |
if (*ep != '/') i++; |
if (*ep != '/') |
508 |
while (pathname <= ep) if (*ep-- == '/') i += 2; |
i++; |
509 |
|
while (pathname <= ep) |
510 |
|
if (*ep-- == '/') |
511 |
|
i += 2; |
512 |
} |
} |
513 |
} |
} |
514 |
return i; |
return i; |
515 |
} |
} |
516 |
|
|
517 |
static int const_part_length(const char *filename) |
/** |
518 |
|
* ccs_const_part_length - Evaluate the initial length without a pattern in a token. |
519 |
|
* |
520 |
|
* @filename: The string to evaluate. |
521 |
|
* |
522 |
|
* Returns the initial length without a pattern in @filename. |
523 |
|
*/ |
524 |
|
static int ccs_const_part_length(const char *filename) |
525 |
{ |
{ |
526 |
|
char c; |
527 |
int len = 0; |
int len = 0; |
528 |
if (filename) { |
if (!filename) |
529 |
char c; |
return 0; |
530 |
while ((c = *filename++) != '\0') { |
while (1) { |
531 |
if (c != '\\') { len++; continue; } |
c = *filename++; |
532 |
switch (c = *filename++) { |
if (!c) |
|
case '\\': /* "\\" */ |
|
|
len += 2; continue; |
|
|
case '0': /* "\ooo" */ |
|
|
case '1': |
|
|
case '2': |
|
|
case '3': |
|
|
if ((c = *filename++) >= '0' && c <= '7' && (c = *filename++) >= '0' && c <= '7') { len += 4; continue; } |
|
|
} |
|
533 |
break; |
break; |
534 |
|
if (c != '\\') { |
535 |
|
len++; |
536 |
|
continue; |
537 |
|
} |
538 |
|
c = *filename++; |
539 |
|
switch (c) { |
540 |
|
case '\\': /* "\\" */ |
541 |
|
len += 2; |
542 |
|
continue; |
543 |
|
case '0': /* "\ooo" */ |
544 |
|
case '1': |
545 |
|
case '2': |
546 |
|
case '3': |
547 |
|
c = *filename++; |
548 |
|
if (c < '0' || c > '7') |
549 |
|
break; |
550 |
|
c = *filename++; |
551 |
|
if (c < '0' || c > '7') |
552 |
|
break; |
553 |
|
len += 4; |
554 |
|
continue; |
555 |
} |
} |
556 |
|
break; |
557 |
} |
} |
558 |
return len; |
return len; |
559 |
} |
} |
560 |
|
|
561 |
void fill_path_info(struct path_info *ptr) |
/** |
562 |
|
* ccs_fill_path_info - Fill in "struct ccs_path_info" members. |
563 |
|
* |
564 |
|
* @ptr: Pointer to "struct ccs_path_info" to fill in. |
565 |
|
* |
566 |
|
* The caller sets "struct ccs_path_info"->name. |
567 |
|
*/ |
568 |
|
void ccs_fill_path_info(struct ccs_path_info *ptr) |
569 |
{ |
{ |
570 |
const char *name = ptr->name; |
const char *name = ptr->name; |
571 |
const int len = strlen(name); |
const int len = strlen(name); |
572 |
ptr->total_len = len; |
ptr->total_len = len; |
573 |
ptr->const_len = const_part_length(name); |
ptr->const_len = ccs_const_part_length(name); |
574 |
ptr->is_dir = len && (name[len - 1] == '/'); |
ptr->is_dir = len && (name[len - 1] == '/'); |
575 |
ptr->is_patterned = (ptr->const_len < len); |
ptr->is_patterned = (ptr->const_len < len); |
576 |
ptr->hash = full_name_hash(name, len); |
ptr->hash = full_name_hash(name, len); |
577 |
ptr->depth = PathDepth(name); |
ptr->depth = ccs_path_depth(name); |
578 |
} |
} |
579 |
|
|
580 |
static int FileMatchesToPattern2(const char *filename, const char *filename_end, const char *pattern, const char *pattern_end) |
/** |
581 |
|
* ccs_file_matches_pattern2 - Pattern matching without '/' character |
582 |
|
* and "\-" pattern. |
583 |
|
* |
584 |
|
* @filename: The start of string to check. |
585 |
|
* @filename_end: The end of string to check. |
586 |
|
* @pattern: The start of pattern to compare. |
587 |
|
* @pattern_end: The end of pattern to compare. |
588 |
|
* |
589 |
|
* Returns true if @filename matches @pattern, false otherwise. |
590 |
|
*/ |
591 |
|
static bool ccs_file_matches_pattern2(const char *filename, |
592 |
|
const char *filename_end, |
593 |
|
const char *pattern, |
594 |
|
const char *pattern_end) |
595 |
{ |
{ |
596 |
while (filename < filename_end && pattern < pattern_end) { |
while (filename < filename_end && pattern < pattern_end) { |
597 |
|
char c; |
598 |
if (*pattern != '\\') { |
if (*pattern != '\\') { |
599 |
if (*filename++ != *pattern++) return 0; |
if (*filename++ != *pattern++) |
600 |
} else { |
return false; |
601 |
char c = *filename; |
continue; |
602 |
pattern++; |
} |
603 |
switch (*pattern) { |
c = *filename; |
604 |
case '?': |
pattern++; |
605 |
if (c == '/') { |
switch (*pattern) { |
606 |
return 0; |
int i; |
607 |
} else if (c == '\\') { |
int j; |
608 |
if ((c = filename[1]) == '\\') { |
case '?': |
609 |
filename++; /* safe because filename is \\ */ |
if (c == '/') { |
610 |
} else if (c >= '0' && c <= '3' && (c = filename[2]) >= '0' && c <= '7' && (c = filename[3]) >= '0' && c <= '7') { |
return false; |
611 |
filename += 3; /* safe because filename is \ooo */ |
} else if (c == '\\') { |
612 |
} else { |
if (filename[1] == '\\') |
613 |
return 0; |
filename++; |
614 |
} |
else if (ccs_is_byte_range(filename + 1)) |
615 |
} |
filename += 3; |
616 |
break; |
else |
617 |
case '\\': |
return false; |
618 |
if (c != '\\') return 0; |
} |
619 |
if (*++filename != '\\') return 0; /* safe because *filename != '\0' */ |
break; |
620 |
break; |
case '\\': |
621 |
case '+': |
if (c != '\\') |
622 |
if (c < '0' || c > '9') return 0; |
return false; |
623 |
break; |
if (*++filename != '\\') |
624 |
case 'x': |
return false; |
625 |
if (!((c >= '0' && c <= '9') || (c >= 'A' && c <= 'F') || (c >= 'a' && c <= 'f'))) return 0; |
break; |
626 |
break; |
case '+': |
627 |
case 'a': |
if (!ccs_is_decimal(c)) |
628 |
if (!((c >= 'A' && c <= 'Z') || (c >= 'a' && c <= 'z'))) return 0; |
return false; |
629 |
|
break; |
630 |
|
case 'x': |
631 |
|
if (!ccs_is_hexadecimal(c)) |
632 |
|
return false; |
633 |
|
break; |
634 |
|
case 'a': |
635 |
|
if (!ccs_is_alphabet_char(c)) |
636 |
|
return false; |
637 |
|
break; |
638 |
|
case '0': |
639 |
|
case '1': |
640 |
|
case '2': |
641 |
|
case '3': |
642 |
|
if (c == '\\' && ccs_is_byte_range(filename + 1) |
643 |
|
&& strncmp(filename + 1, pattern, 3) == 0) { |
644 |
|
filename += 3; |
645 |
|
pattern += 2; |
646 |
break; |
break; |
647 |
case '0': |
} |
648 |
case '1': |
return false; /* Not matched. */ |
649 |
case '2': |
case '*': |
650 |
case '3': |
case '@': |
651 |
if (c == '\\' && (c = filename[1]) >= '0' && c <= '3' && c == *pattern |
for (i = 0; i <= filename_end - filename; i++) { |
652 |
&& (c = filename[2]) >= '0' && c <= '7' && c == pattern[1] |
if (ccs_file_matches_pattern2(filename + i, |
653 |
&& (c = filename[3]) >= '0' && c <= '7' && c == pattern[2]) { |
filename_end, |
654 |
filename += 3; /* safe because filename is \ooo */ |
pattern + 1, |
655 |
pattern += 2; /* safe because pattern is \ooo */ |
pattern_end)) |
656 |
|
return true; |
657 |
|
c = filename[i]; |
658 |
|
if (c == '.' && *pattern == '@') |
659 |
break; |
break; |
660 |
} |
if (c != '\\') |
661 |
return 0; /* Not matched. */ |
continue; |
662 |
case '*': |
if (filename[i + 1] == '\\') |
663 |
case '@': |
i++; |
664 |
{ |
else if (ccs_is_byte_range(filename + i + 1)) |
665 |
int i; |
i += 3; |
666 |
for (i = 0; i <= filename_end - filename; i++) { |
else |
667 |
if (FileMatchesToPattern2(filename + i, filename_end, pattern + 1, pattern_end)) return 1; |
break; /* Bad pattern. */ |
668 |
if ((c = filename[i]) == '.' && *pattern == '@') break; |
} |
669 |
if (c == '\\') { |
return false; /* Not matched. */ |
670 |
if ((c = filename[i + 1]) == '\\') { |
default: |
671 |
i++; /* safe because filename is \\ */ |
j = 0; |
672 |
} else if (c >= '0' && c <= '3' && (c = filename[i + 2]) >= '0' && c <= '7' && (c = filename[i + 3]) >= '0' && c <= '7') { |
c = *pattern; |
673 |
i += 3; /* safe because filename is \ooo */ |
if (c == '$') { |
674 |
} else { |
while (ccs_is_decimal(filename[j])) |
675 |
break; /* Bad pattern. */ |
j++; |
676 |
} |
} else if (c == 'X') { |
677 |
} |
while (ccs_is_hexadecimal(filename[j])) |
678 |
} |
j++; |
679 |
return 0; /* Not matched. */ |
} else if (c == 'A') { |
680 |
} |
while (ccs_is_alphabet_char(filename[j])) |
681 |
default: |
j++; |
|
{ |
|
|
int i, j = 0; |
|
|
if ((c = *pattern) == '$') { |
|
|
while ((c = filename[j]) >= '0' && c <= '9') j++; |
|
|
} else if (c == 'X') { |
|
|
while (((c = filename[j]) >= '0' && c <= '9') || (c >= 'A' && c <= 'F') || (c >= 'a' && c <= 'f')) j++; |
|
|
} else if (c == 'A') { |
|
|
while (((c = filename[j]) >= 'A' && c <= 'Z') || (c >= 'a' && c <= 'z')) j++; |
|
|
} |
|
|
for (i = 1; i <= j; i++) { |
|
|
if (FileMatchesToPattern2(filename + i, filename_end, pattern + 1, pattern_end)) return 1; |
|
|
} |
|
|
} |
|
|
return 0; /* Not matched or bad pattern. */ |
|
682 |
} |
} |
683 |
filename++; /* safe because *filename != '\0' */ |
for (i = 1; i <= j; i++) { |
684 |
pattern++; /* safe because *pattern != '\0' */ |
if (ccs_file_matches_pattern2(filename + i, |
685 |
|
filename_end, |
686 |
|
pattern + 1, |
687 |
|
pattern_end)) |
688 |
|
return true; |
689 |
|
} |
690 |
|
return false; /* Not matched or bad pattern. */ |
691 |
} |
} |
692 |
|
filename++; |
693 |
|
pattern++; |
694 |
} |
} |
695 |
while (*pattern == '\\' && (*(pattern + 1) == '*' || *(pattern + 1) == '@')) pattern += 2; |
while (*pattern == '\\' && |
696 |
return (filename == filename_end && pattern == pattern_end); |
(*(pattern + 1) == '*' || *(pattern + 1) == '@')) |
697 |
|
pattern += 2; |
698 |
|
return filename == filename_end && pattern == pattern_end; |
699 |
} |
} |
700 |
|
|
701 |
static int FileMatchesToPattern(const char *filename, const char *filename_end, const char *pattern, const char *pattern_end) |
/** |
702 |
|
* ccs_file_matches_pattern - Pattern matching without without '/' character. |
703 |
|
* |
704 |
|
* @filename: The start of string to check. |
705 |
|
* @filename_end: The end of string to check. |
706 |
|
* @pattern: The start of pattern to compare. |
707 |
|
* @pattern_end: The end of pattern to compare. |
708 |
|
* |
709 |
|
* Returns true if @filename matches @pattern, false otherwise. |
710 |
|
*/ |
711 |
|
static bool ccs_file_matches_pattern(const char *filename, |
712 |
|
const char *filename_end, |
713 |
|
const char *pattern, |
714 |
|
const char *pattern_end) |
715 |
{ |
{ |
716 |
const char *pattern_start = pattern; |
const char *pattern_start = pattern; |
717 |
int first = 1; |
bool first = true; |
718 |
int result; |
bool result; |
719 |
while (pattern < pattern_end - 1) { |
while (pattern < pattern_end - 1) { |
720 |
if (*pattern++ != '\\' || *pattern++ != '-') continue; |
/* Split at "\-" pattern. */ |
721 |
result = FileMatchesToPattern2(filename, filename_end, pattern_start, pattern - 2); |
if (*pattern++ != '\\' || *pattern++ != '-') |
722 |
if (first) result = !result; |
continue; |
723 |
if (result) return 0; |
result = ccs_file_matches_pattern2(filename, filename_end, |
724 |
first = 0; |
pattern_start, pattern - 2); |
725 |
|
if (first) |
726 |
|
result = !result; |
727 |
|
if (result) |
728 |
|
return false; |
729 |
|
first = false; |
730 |
pattern_start = pattern; |
pattern_start = pattern; |
731 |
} |
} |
732 |
result = FileMatchesToPattern2(filename, filename_end, pattern_start, pattern_end); |
result = ccs_file_matches_pattern2(filename, filename_end, |
733 |
|
pattern_start, pattern_end); |
734 |
return first ? result : !result; |
return first ? result : !result; |
735 |
} |
} |
736 |
|
|
737 |
/* |
/** |
738 |
* Check whether the given pathname matches to the given pattern. |
* ccs_path_matches_pattern - Check whether the given filename matches the given pattern. |
739 |
* Returns nonzero if matches, zero otherwise. |
* @filename: The filename to check. |
740 |
* |
* @pattern: The pattern to compare. |
741 |
* The following patterns are available. |
* |
742 |
* \\ \ itself. |
* Returns true if matches, false otherwise. |
743 |
* \ooo Octal representation of a byte. |
* |
744 |
* \* More than or equals to 0 character other than '/'. |
* The following patterns are available. |
745 |
* \@ More than or equals to 0 character other than '/' or '.'. |
* \\ \ itself. |
746 |
* \? 1 byte character other than '/'. |
* \ooo Octal representation of a byte. |
747 |
* \$ More than or equals to 1 decimal digit. |
* \* More than or equals to 0 character other than '/'. |
748 |
* \+ 1 decimal digit. |
* \@ More than or equals to 0 character other than '/' or '.'. |
749 |
* \X More than or equals to 1 hexadecimal digit. |
* \? 1 byte character other than '/'. |
750 |
* \x 1 hexadecimal digit. |
* \$ More than or equals to 1 decimal digit. |
751 |
* \A More than or equals to 1 alphabet character. |
* \+ 1 decimal digit. |
752 |
* \a 1 alphabet character. |
* \X More than or equals to 1 hexadecimal digit. |
753 |
* \- Subtraction operator. |
* \x 1 hexadecimal digit. |
754 |
*/ |
* \A More than or equals to 1 alphabet character. |
755 |
|
* \a 1 alphabet character. |
756 |
int PathMatchesToPattern(const struct path_info *pathname0, const struct path_info *pattern0) |
* \- Subtraction operator. |
|
{ |
|
|
/* if (!pathname || !pattern) return 0; */ |
|
|
const char *pathname = pathname0->name, *pattern = pattern0->name; |
|
|
const int len = pattern0->const_len; |
|
|
if (!pattern0->is_patterned) return !pathcmp(pathname0, pattern0); |
|
|
if (pathname0->depth != pattern0->depth) return 0; |
|
|
if (strncmp(pathname, pattern, len)) return 0; |
|
|
pathname += len; pattern += len; |
|
|
while (*pathname && *pattern) { |
|
|
const char *pathname_delimiter = strchr(pathname, '/'), *pattern_delimiter = strchr(pattern, '/'); |
|
|
if (!pathname_delimiter) pathname_delimiter = strchr(pathname, '\0'); |
|
|
if (!pattern_delimiter) pattern_delimiter = strchr(pattern, '\0'); |
|
|
if (!FileMatchesToPattern(pathname, pathname_delimiter, pattern, pattern_delimiter)) return 0; |
|
|
pathname = *pathname_delimiter ? pathname_delimiter + 1 : pathname_delimiter; |
|
|
pattern = *pattern_delimiter ? pattern_delimiter + 1 : pattern_delimiter; |
|
|
} |
|
|
while (*pattern == '\\' && (*(pattern + 1) == '*' || *(pattern + 1) == '@')) pattern += 2; |
|
|
return (!*pathname && !*pattern); |
|
|
} |
|
|
|
|
|
/* |
|
|
* Transactional printf() to struct io_buffer structure. |
|
|
* snprintf() will truncate, but io_printf() won't. |
|
|
* Returns zero on success, nonzero otherwise. |
|
757 |
*/ |
*/ |
758 |
int io_printf(struct io_buffer *head, const char *fmt, ...) |
bool ccs_path_matches_pattern(const struct ccs_path_info *filename, |
759 |
|
const struct ccs_path_info *pattern) |
760 |
|
{ |
761 |
|
/* |
762 |
|
if (!filename || !pattern) |
763 |
|
return false; |
764 |
|
*/ |
765 |
|
const char *f = filename->name; |
766 |
|
const char *p = pattern->name; |
767 |
|
const int len = pattern->const_len; |
768 |
|
/* If @pattern doesn't contain pattern, I can use strcmp(). */ |
769 |
|
if (!pattern->is_patterned) |
770 |
|
return !ccs_pathcmp(filename, pattern); |
771 |
|
/* Dont compare if the number of '/' differs. */ |
772 |
|
if (filename->depth != pattern->depth) |
773 |
|
return false; |
774 |
|
/* Compare the initial length without patterns. */ |
775 |
|
if (strncmp(f, p, len)) |
776 |
|
return false; |
777 |
|
f += len; |
778 |
|
p += len; |
779 |
|
/* Main loop. Compare each directory component. */ |
780 |
|
while (*f && *p) { |
781 |
|
const char *f_delimiter = strchr(f, '/'); |
782 |
|
const char *p_delimiter = strchr(p, '/'); |
783 |
|
if (!f_delimiter) |
784 |
|
f_delimiter = f + strlen(f); |
785 |
|
if (!p_delimiter) |
786 |
|
p_delimiter = p + strlen(p); |
787 |
|
if (!ccs_file_matches_pattern(f, f_delimiter, p, p_delimiter)) |
788 |
|
return false; |
789 |
|
f = f_delimiter; |
790 |
|
if (*f) |
791 |
|
f++; |
792 |
|
p = p_delimiter; |
793 |
|
if (*p) |
794 |
|
p++; |
795 |
|
} |
796 |
|
/* Ignore trailing "\*" and "\@" in @pattern. */ |
797 |
|
while (*p == '\\' && |
798 |
|
(*(p + 1) == '*' || *(p + 1) == '@')) |
799 |
|
p += 2; |
800 |
|
return !*f && !*p; |
801 |
|
} |
802 |
|
|
803 |
|
/** |
804 |
|
* ccs_io_printf - Transactional printf() to "struct ccs_io_buffer" structure. |
805 |
|
* |
806 |
|
* @head: Pointer to "struct ccs_io_buffer". |
807 |
|
* @fmt: The printf()'s format string, followed by parameters. |
808 |
|
* |
809 |
|
* Returns true on success, false otherwise. |
810 |
|
* |
811 |
|
* The snprintf() will truncate, but ccs_io_printf() won't. |
812 |
|
*/ |
813 |
|
bool ccs_io_printf(struct ccs_io_buffer *head, const char *fmt, ...) |
814 |
{ |
{ |
815 |
va_list args; |
va_list args; |
816 |
int len, pos = head->read_avail, size = head->readbuf_size - pos; |
int len; |
817 |
if (size <= 0) return -ENOMEM; |
int pos = head->read_avail; |
818 |
|
int size = head->readbuf_size - pos; |
819 |
|
if (size <= 0) |
820 |
|
return false; |
821 |
va_start(args, fmt); |
va_start(args, fmt); |
822 |
len = vsnprintf(head->read_buf + pos, size, fmt, args); |
len = vsnprintf(head->read_buf + pos, size, fmt, args); |
823 |
va_end(args); |
va_end(args); |
824 |
if (pos + len >= head->readbuf_size) return -ENOMEM; |
if (pos + len >= head->readbuf_size) |
825 |
|
return false; |
826 |
head->read_avail += len; |
head->read_avail += len; |
827 |
return 0; |
return true; |
828 |
} |
} |
829 |
|
|
830 |
/* |
/** |
831 |
* Get realpath() of current process. |
* ccs_get_exe - Get ccs_realpath() of current process. |
832 |
* This function uses ccs_alloc(), so caller must ccs_free() if this function didn't return NULL. |
* |
833 |
|
* Returns the ccs_realpath() of current process on success, NULL otherwise. |
834 |
|
* |
835 |
|
* This function uses kzalloc(), so the caller must kfree() |
836 |
|
* if this function didn't return NULL. |
837 |
*/ |
*/ |
838 |
const char *GetEXE(void) |
const char *ccs_get_exe(void) |
839 |
{ |
{ |
840 |
struct mm_struct *mm = current->mm; |
struct mm_struct *mm = current->mm; |
841 |
struct vm_area_struct *vma; |
struct vm_area_struct *vma; |
842 |
const char *cp = NULL; |
const char *cp = NULL; |
843 |
if (!mm) return NULL; |
if (!mm) |
844 |
|
return NULL; |
845 |
down_read(&mm->mmap_sem); |
down_read(&mm->mmap_sem); |
846 |
for (vma = mm->mmap; vma; vma = vma->vm_next) { |
for (vma = mm->mmap; vma; vma = vma->vm_next) { |
847 |
if ((vma->vm_flags & VM_EXECUTABLE) && vma->vm_file) { |
if ((vma->vm_flags & VM_EXECUTABLE) && vma->vm_file) { |
848 |
cp = realpath_from_dentry(vma->vm_file->f_dentry, vma->vm_file->f_vfsmnt); |
cp = ccs_realpath_from_dentry(vma->vm_file->f_dentry, |
849 |
|
vma->vm_file->f_vfsmnt); |
850 |
break; |
break; |
851 |
} |
} |
852 |
} |
} |
854 |
return cp; |
return cp; |
855 |
} |
} |
856 |
|
|
857 |
const char *GetMSG(const bool is_enforce) |
/** |
858 |
|
* ccs_get_msg - Get warning message. |
859 |
|
* |
860 |
|
* @is_enforce: Is it enforcing mode? |
861 |
|
* |
862 |
|
* Returns "ERROR" or "WARNING". |
863 |
|
*/ |
864 |
|
const char *ccs_get_msg(const bool is_enforce) |
865 |
{ |
{ |
866 |
if (is_enforce) return "ERROR"; else return "WARNING"; |
if (is_enforce) |
867 |
|
return "ERROR"; |
868 |
|
else |
869 |
|
return "WARNING"; |
870 |
} |
} |
871 |
|
|
872 |
const char *GetAltExec(void) |
/** |
873 |
|
* ccs_can_sleep - Check whether it is permitted to do operations that may sleep. |
874 |
|
* |
875 |
|
* Returns true if it is permitted to do operations that may sleep, |
876 |
|
* false otherwise. |
877 |
|
* |
878 |
|
* TOMOYO Linux supports interactive enforcement that lets processes |
879 |
|
* wait for the administrator's decision. |
880 |
|
* All hooks but the one for ccs_may_autobind() are inserted where |
881 |
|
* it is permitted to do operations that may sleep. |
882 |
|
* Thus, this warning should not happen. |
883 |
|
*/ |
884 |
|
bool ccs_can_sleep(void) |
885 |
{ |
{ |
886 |
const u8 profile = current->domain_info->profile; |
static u8 count = 20; |
887 |
const struct path_info *alt_exec = profile_ptr[profile] ? profile_ptr[profile]->alt_exec : NULL; |
if (likely(!in_interrupt())) |
888 |
return alt_exec ? alt_exec->name : NULL; |
return true; |
889 |
|
if (count) { |
890 |
|
count--; |
891 |
|
printk(KERN_ERR "BUG: sleeping function called " |
892 |
|
"from invalid context.\n"); |
893 |
|
dump_stack(); |
894 |
|
} |
895 |
|
return false; |
896 |
} |
} |
897 |
|
|
898 |
/************************* DOMAIN POLICY HANDLER *************************/ |
/** |
899 |
|
* ccs_check_flags - Check mode for specified functionality. |
900 |
|
* |
901 |
|
* @domain: Pointer to "struct ccs_domain_info". NULL for ccs_current_domain(). |
902 |
|
* @index: The functionality to check mode. |
903 |
|
* |
904 |
|
* Returns the mode of specified functionality. |
905 |
|
*/ |
906 |
|
unsigned int ccs_check_flags(const struct ccs_domain_info *domain, |
907 |
|
const u8 index) |
908 |
|
{ |
909 |
|
u8 profile; |
910 |
|
if (!domain) |
911 |
|
domain = ccs_current_domain(); |
912 |
|
profile = domain->profile; |
913 |
|
return ccs_policy_loaded && index < CCS_MAX_CONTROL_INDEX |
914 |
|
#if MAX_PROFILES != 256 |
915 |
|
&& profile < MAX_PROFILES |
916 |
|
#endif |
917 |
|
&& ccs_profile_ptr[profile] ? |
918 |
|
ccs_profile_ptr[profile]->value[index] : 0; |
919 |
|
} |
920 |
|
|
921 |
/* Check whether the given access control is enabled. */ |
/** |
922 |
unsigned int CheckCCSFlags(const unsigned int index) |
* ccs_check_capability_flags - Check mode for specified capability. |
923 |
|
* |
924 |
|
* @domain: Pointer to "struct ccs_domain_info". NULL for ccs_current_domain(). |
925 |
|
* @index: The capability to check mode. |
926 |
|
* |
927 |
|
* Returns the mode of specified capability. |
928 |
|
*/ |
929 |
|
static u8 ccs_check_capability_flags(const struct ccs_domain_info *domain, |
930 |
|
const u8 index) |
931 |
{ |
{ |
932 |
const u8 profile = current->domain_info->profile; |
const u8 profile = domain ? domain->profile : |
933 |
return sbin_init_started && index < CCS_MAX_CONTROL_INDEX |
ccs_current_domain()->profile; |
934 |
|
return ccs_policy_loaded && index < CCS_MAX_CAPABILITY_INDEX |
935 |
#if MAX_PROFILES != 256 |
#if MAX_PROFILES != 256 |
936 |
&& profile < MAX_PROFILES |
&& profile < MAX_PROFILES |
937 |
#endif |
#endif |
938 |
&& profile_ptr[profile] ? profile_ptr[profile]->value[index] : 0; |
&& ccs_profile_ptr[profile] ? |
939 |
|
ccs_profile_ptr[profile]->capability_value[index] : 0; |
940 |
} |
} |
941 |
|
|
942 |
bool TomoyoVerboseMode(void) |
/** |
943 |
|
* ccs_cap2keyword - Convert capability operation to capability name. |
944 |
|
* |
945 |
|
* @operation: The capability index. |
946 |
|
* |
947 |
|
* Returns the name of the specified capability's name. |
948 |
|
*/ |
949 |
|
const char *ccs_cap2keyword(const u8 operation) |
950 |
{ |
{ |
951 |
return CheckCCSFlags(CCS_TOMOYO_VERBOSE) != 0; |
return operation < CCS_MAX_CAPABILITY_INDEX |
952 |
|
? ccs_capability_control_keyword[operation] : NULL; |
953 |
} |
} |
954 |
|
|
955 |
/* Check whether the given access control is enforce mode. */ |
/** |
956 |
bool CheckCCSEnforce(const unsigned int index) |
* ccs_init_request_info - Initialize "struct ccs_request_info" members. |
957 |
|
* |
958 |
|
* @r: Pointer to "struct ccs_request_info" to initialize. |
959 |
|
* @domain: Pointer to "struct ccs_domain_info". NULL for ccs_current_domain(). |
960 |
|
* @index: Index number of functionality. |
961 |
|
*/ |
962 |
|
void ccs_init_request_info(struct ccs_request_info *r, |
963 |
|
struct ccs_domain_info *domain, const u8 index) |
964 |
{ |
{ |
965 |
return CheckCCSFlags(index) == 3; |
memset(r, 0, sizeof(*r)); |
966 |
|
if (!domain) |
967 |
|
domain = ccs_current_domain(); |
968 |
|
r->domain = domain; |
969 |
|
r->profile = domain->profile; |
970 |
|
if (index < CCS_MAX_CONTROL_INDEX) |
971 |
|
r->mode = ccs_check_flags(domain, index); |
972 |
|
else |
973 |
|
r->mode = ccs_check_capability_flags(domain, index |
974 |
|
- CCS_MAX_CONTROL_INDEX); |
975 |
} |
} |
976 |
|
|
977 |
bool CheckDomainQuota(struct domain_info * const domain) |
/** |
978 |
|
* ccs_verbose_mode - Check whether TOMOYO is verbose mode. |
979 |
|
* |
980 |
|
* @domain: Pointer to "struct ccs_domain_info". NULL for ccs_current_domain(). |
981 |
|
* |
982 |
|
* Returns true if domain policy violation warning should be printed to |
983 |
|
* console. |
984 |
|
*/ |
985 |
|
bool ccs_verbose_mode(const struct ccs_domain_info *domain) |
986 |
|
{ |
987 |
|
return ccs_check_flags(domain, CCS_VERBOSE) != 0; |
988 |
|
} |
989 |
|
|
990 |
|
/** |
991 |
|
* ccs_domain_quota_ok - Check for domain's quota. |
992 |
|
* |
993 |
|
* @r: Pointer to "struct ccs_request_info". |
994 |
|
* |
995 |
|
* Returns true if the domain is not exceeded quota, false otherwise. |
996 |
|
* |
997 |
|
* Caller holds srcu_read_lock(&ccs_ss). |
998 |
|
*/ |
999 |
|
bool ccs_domain_quota_ok(struct ccs_request_info *r) |
1000 |
{ |
{ |
1001 |
unsigned int count = 0; |
unsigned int count = 0; |
1002 |
struct acl_info *ptr; |
struct ccs_domain_info *domain = r->domain; |
1003 |
if (!domain) return 1; |
struct ccs_acl_info *ptr; |
1004 |
list1_for_each_entry(ptr, &domain->acl_info_list, list) { |
if (r->mode != 1) |
1005 |
if (!ptr->is_deleted) count++; |
return false; |
1006 |
|
if (!domain) |
1007 |
|
return true; |
1008 |
|
list_for_each_entry_rcu(ptr, &domain->acl_info_list, list) { |
1009 |
|
if (ptr->type & ACL_DELETED) |
1010 |
|
continue; |
1011 |
|
switch (ccs_acl_type2(ptr)) { |
1012 |
|
struct ccs_single_path_acl_record *acl1; |
1013 |
|
struct ccs_double_path_acl_record *acl2; |
1014 |
|
u16 perm; |
1015 |
|
case TYPE_SINGLE_PATH_ACL: |
1016 |
|
acl1 = container_of(ptr, |
1017 |
|
struct ccs_single_path_acl_record, |
1018 |
|
head); |
1019 |
|
perm = acl1->perm; |
1020 |
|
if (perm & (1 << TYPE_EXECUTE_ACL)) |
1021 |
|
count++; |
1022 |
|
if (perm & |
1023 |
|
((1 << TYPE_READ_ACL) | (1 << TYPE_WRITE_ACL))) |
1024 |
|
count++; |
1025 |
|
if (perm & (1 << TYPE_CREATE_ACL)) |
1026 |
|
count++; |
1027 |
|
if (perm & (1 << TYPE_UNLINK_ACL)) |
1028 |
|
count++; |
1029 |
|
if (perm & (1 << TYPE_MKDIR_ACL)) |
1030 |
|
count++; |
1031 |
|
if (perm & (1 << TYPE_RMDIR_ACL)) |
1032 |
|
count++; |
1033 |
|
if (perm & (1 << TYPE_MKFIFO_ACL)) |
1034 |
|
count++; |
1035 |
|
if (perm & (1 << TYPE_MKSOCK_ACL)) |
1036 |
|
count++; |
1037 |
|
if (perm & (1 << TYPE_MKBLOCK_ACL)) |
1038 |
|
count++; |
1039 |
|
if (perm & (1 << TYPE_MKCHAR_ACL)) |
1040 |
|
count++; |
1041 |
|
if (perm & (1 << TYPE_TRUNCATE_ACL)) |
1042 |
|
count++; |
1043 |
|
if (perm & (1 << TYPE_SYMLINK_ACL)) |
1044 |
|
count++; |
1045 |
|
if (perm & (1 << TYPE_REWRITE_ACL)) |
1046 |
|
count++; |
1047 |
|
break; |
1048 |
|
case TYPE_DOUBLE_PATH_ACL: |
1049 |
|
acl2 = container_of(ptr, |
1050 |
|
struct ccs_double_path_acl_record, |
1051 |
|
head); |
1052 |
|
perm = acl2->perm; |
1053 |
|
if (perm & (1 << TYPE_LINK_ACL)) |
1054 |
|
count++; |
1055 |
|
if (perm & (1 << TYPE_RENAME_ACL)) |
1056 |
|
count++; |
1057 |
|
break; |
1058 |
|
case TYPE_EXECUTE_HANDLER: |
1059 |
|
case TYPE_DENIED_EXECUTE_HANDLER: |
1060 |
|
break; |
1061 |
|
default: |
1062 |
|
count++; |
1063 |
|
} |
1064 |
} |
} |
1065 |
if (count < CheckCCSFlags(CCS_TOMOYO_MAX_ACCEPT_ENTRY)) return 1; |
if (count < ccs_check_flags(domain, CCS_MAX_ACCEPT_ENTRY)) |
1066 |
|
return true; |
1067 |
if (!domain->quota_warned) { |
if (!domain->quota_warned) { |
1068 |
domain->quota_warned = 1; |
domain->quota_warned = true; |
1069 |
printk("TOMOYO-WARNING: Domain '%s' has so many ACLs to hold. Stopped learning mode.\n", domain->domainname->name); |
printk(KERN_WARNING "TOMOYO-WARNING: " |
1070 |
|
"Domain '%s' has so many ACLs to hold. " |
1071 |
|
"Stopped learning mode.\n", domain->domainname->name); |
1072 |
} |
} |
1073 |
return 0; |
return false; |
|
} |
|
|
|
|
|
/* Check whether the given access control is learning mode. */ |
|
|
bool CheckCCSAccept(const unsigned int index, struct domain_info * const domain) |
|
|
{ |
|
|
if (CheckCCSFlags(index) != 1) return 0; |
|
|
return CheckDomainQuota(domain); |
|
1074 |
} |
} |
1075 |
|
|
1076 |
static struct profile *FindOrAssignNewProfile(const unsigned int profile) |
/** |
1077 |
|
* ccs_find_or_assign_new_profile - Create a new profile. |
1078 |
|
* |
1079 |
|
* @profile: Profile number to create. |
1080 |
|
* |
1081 |
|
* Returns pointer to "struct ccs_profile" on success, NULL otherwise. |
1082 |
|
*/ |
1083 |
|
static struct ccs_profile *ccs_find_or_assign_new_profile(const unsigned int |
1084 |
|
profile) |
1085 |
{ |
{ |
1086 |
static DEFINE_MUTEX(profile_lock); |
struct ccs_profile *ptr; |
1087 |
struct profile *ptr = NULL; |
struct ccs_profile *entry; |
1088 |
mutex_lock(&profile_lock); |
int i; |
1089 |
if (profile < MAX_PROFILES && (ptr = profile_ptr[profile]) == NULL) { |
if (profile >= MAX_PROFILES) |
1090 |
if ((ptr = alloc_element(sizeof(*ptr))) != NULL) { |
return NULL; |
1091 |
int i; |
ptr = ccs_profile_ptr[profile]; |
1092 |
for (i = 0; i < CCS_MAX_CONTROL_INDEX; i++) ptr->value[i] = ccs_control_array[i].current_value; |
if (ptr) |
1093 |
mb(); /* Avoid out-of-order execution. */ |
return ptr; |
1094 |
profile_ptr[profile] = ptr; |
entry = kzalloc(sizeof(*entry), GFP_KERNEL); |
1095 |
} |
mutex_lock(&ccs_policy_lock); |
1096 |
|
ptr = ccs_profile_ptr[profile]; |
1097 |
|
if (!ptr && ccs_memory_ok(entry, sizeof(*entry))) { |
1098 |
|
ptr = entry; |
1099 |
|
for (i = 0; i < CCS_MAX_CONTROL_INDEX; i++) |
1100 |
|
ptr->value[i] = ccs_control_array[i].current_value; |
1101 |
|
/* |
1102 |
|
* Needn't to initialize "ptr->capability_value" |
1103 |
|
* because they are always 0. |
1104 |
|
*/ |
1105 |
|
mb(); /* Avoid out-of-order execution. */ |
1106 |
|
ccs_profile_ptr[profile] = ptr; |
1107 |
|
entry = NULL; |
1108 |
} |
} |
1109 |
mutex_unlock(&profile_lock); |
mutex_unlock(&ccs_policy_lock); |
1110 |
|
kfree(entry); |
1111 |
return ptr; |
return ptr; |
1112 |
} |
} |
1113 |
|
|
1114 |
/* #define ALT_EXEC */ |
/** |
1115 |
|
* ccs_write_profile - Write profile table. |
1116 |
static int SetProfile(struct io_buffer *head) |
* |
1117 |
|
* @head: Pointer to "struct ccs_io_buffer". |
1118 |
|
* |
1119 |
|
* Returns 0 on success, negative value otherwise. |
1120 |
|
*/ |
1121 |
|
static int ccs_write_profile(struct ccs_io_buffer *head) |
1122 |
{ |
{ |
1123 |
char *data = head->write_buf; |
char *data = head->write_buf; |
1124 |
unsigned int i, value; |
unsigned int i; |
1125 |
|
unsigned int value; |
1126 |
char *cp; |
char *cp; |
1127 |
struct profile *profile; |
struct ccs_profile *ccs_profile; |
|
if (!isRoot()) return -EPERM; |
|
1128 |
i = simple_strtoul(data, &cp, 10); |
i = simple_strtoul(data, &cp, 10); |
1129 |
if (data != cp) { |
if (data != cp) { |
1130 |
if (*cp != '-') return -EINVAL; |
if (*cp != '-') |
1131 |
data= cp + 1; |
return -EINVAL; |
1132 |
|
data = cp + 1; |
1133 |
} |
} |
1134 |
profile = FindOrAssignNewProfile(i); |
ccs_profile = ccs_find_or_assign_new_profile(i); |
1135 |
if (!profile) return -EINVAL; |
if (!ccs_profile) |
1136 |
|
return -EINVAL; |
1137 |
cp = strchr(data, '='); |
cp = strchr(data, '='); |
1138 |
if (!cp) return -EINVAL; |
if (!cp) |
1139 |
|
return -EINVAL; |
1140 |
*cp = '\0'; |
*cp = '\0'; |
1141 |
UpdateCounter(CCS_UPDATES_COUNTER_PROFILE); |
if (!strcmp(data, "COMMENT")) { |
1142 |
if (strcmp(data, ccs_control_array[CCS_PROFILE_COMMENT].keyword) == 0) { |
ccs_profile->comment = ccs_get_name(cp + 1); |
1143 |
profile->comment = SaveName(cp + 1); |
ccs_profile_entry_used[0] = true; |
1144 |
return 0; |
return 0; |
1145 |
} |
} |
1146 |
#ifdef ALT_EXEC |
if (ccs_str_starts(&data, KEYWORD_MAC_FOR_CAPABILITY)) { |
1147 |
#ifdef CONFIG_TOMOYO |
if (sscanf(cp + 1, "%u", &value) != 1) { |
1148 |
if (strcmp(data, ccs_control_array[CCS_TOMOYO_ALT_EXEC].keyword) == 0) { |
for (i = 0; i < 4; i++) { |
1149 |
cp++; |
if (strcmp(cp + 1, ccs_mode_4[i])) |
1150 |
if (*cp && !IsCorrectPath(cp, 1, -1, -1, __FUNCTION__)) cp = ""; |
continue; |
1151 |
profile->alt_exec = SaveName(cp); |
value = i; |
1152 |
return 0; |
break; |
1153 |
} |
} |
1154 |
#endif |
if (i == 4) |
1155 |
#endif |
return -EINVAL; |
1156 |
if (sscanf(cp + 1, "%u", &value) != 1) return -EINVAL; |
} |
1157 |
#ifdef CONFIG_TOMOYO |
if (value > 3) |
1158 |
if (strncmp(data, KEYWORD_MAC_FOR_CAPABILITY, KEYWORD_MAC_FOR_CAPABILITY_LEN) == 0) { |
value = 3; |
1159 |
return SetCapabilityStatus(data + KEYWORD_MAC_FOR_CAPABILITY_LEN, value, i); |
for (i = 0; i < CCS_MAX_CAPABILITY_INDEX; i++) { |
1160 |
|
if (strcmp(data, ccs_capability_control_keyword[i])) |
1161 |
|
continue; |
1162 |
|
ccs_profile->capability_value[i] = value; |
1163 |
|
ccs_profile_entry_used[i + 1 + CCS_MAX_CONTROL_INDEX] |
1164 |
|
= true; |
1165 |
|
return 0; |
1166 |
|
} |
1167 |
|
return -EINVAL; |
1168 |
} |
} |
|
#endif |
|
1169 |
for (i = 0; i < CCS_MAX_CONTROL_INDEX; i++) { |
for (i = 0; i < CCS_MAX_CONTROL_INDEX; i++) { |
1170 |
if (strcmp(data, ccs_control_array[i].keyword)) continue; |
if (strcmp(data, ccs_control_array[i].keyword)) |
1171 |
if (value > ccs_control_array[i].max_value) value = ccs_control_array[i].max_value; |
continue; |
1172 |
profile->value[i] = value; |
if (sscanf(cp + 1, "%u", &value) != 1) { |
1173 |
|
int j; |
1174 |
|
const char **modes; |
1175 |
|
switch (i) { |
1176 |
|
case CCS_RESTRICT_AUTOBIND: |
1177 |
|
case CCS_VERBOSE: |
1178 |
|
modes = ccs_mode_2; |
1179 |
|
break; |
1180 |
|
default: |
1181 |
|
modes = ccs_mode_4; |
1182 |
|
break; |
1183 |
|
} |
1184 |
|
for (j = 0; j < 4; j++) { |
1185 |
|
if (strcmp(cp + 1, modes[j])) |
1186 |
|
continue; |
1187 |
|
value = j; |
1188 |
|
break; |
1189 |
|
} |
1190 |
|
if (j == 4) |
1191 |
|
return -EINVAL; |
1192 |
|
} else if (value > ccs_control_array[i].max_value) { |
1193 |
|
value = ccs_control_array[i].max_value; |
1194 |
|
} |
1195 |
|
ccs_profile->value[i] = value; |
1196 |
|
ccs_profile_entry_used[i + 1] = true; |
1197 |
return 0; |
return 0; |
1198 |
} |
} |
1199 |
return -EINVAL; |
return -EINVAL; |
1200 |
} |
} |
1201 |
|
|
1202 |
static int ReadProfile(struct io_buffer *head) |
/** |
1203 |
|
* ccs_read_profile - Read profile table. |
1204 |
|
* |
1205 |
|
* @head: Pointer to "struct ccs_io_buffer". |
1206 |
|
* |
1207 |
|
* Returns 0. |
1208 |
|
*/ |
1209 |
|
static int ccs_read_profile(struct ccs_io_buffer *head) |
1210 |
{ |
{ |
1211 |
if (!head->read_eof) { |
static const int ccs_total |
1212 |
if (!isRoot()) return -EPERM; |
= CCS_MAX_CONTROL_INDEX + CCS_MAX_CAPABILITY_INDEX + 1; |
1213 |
if (!head->read_var2) { |
int step; |
1214 |
int step; |
if (head->read_eof) |
1215 |
for (step = head->read_step; step < MAX_PROFILES * CCS_MAX_CONTROL_INDEX; step++) { |
return 0; |
1216 |
const int i = step / CCS_MAX_CONTROL_INDEX, j = step % CCS_MAX_CONTROL_INDEX; |
for (step = head->read_step; step < MAX_PROFILES * ccs_total; step++) { |
1217 |
const struct profile *profile = profile_ptr[i]; |
const u8 index = step / ccs_total; |
1218 |
head->read_step = step; |
u8 type = step % ccs_total; |
1219 |
if (!profile) continue; |
const struct ccs_profile *ccs_profile = ccs_profile_ptr[index]; |
1220 |
switch (j) { |
head->read_step = step; |
1221 |
case -1: /* Dummy */ |
if (!ccs_profile) |
1222 |
#ifndef CONFIG_SAKURA |
continue; |
1223 |
case CCS_SAKURA_DENY_CONCEAL_MOUNT: |
if (!ccs_profile_entry_used[type]) |
1224 |
case CCS_SAKURA_RESTRICT_CHROOT: |
continue; |
1225 |
case CCS_SAKURA_RESTRICT_MOUNT: |
if (!type) { /* Print profile' comment tag. */ |
1226 |
case CCS_SAKURA_RESTRICT_UNMOUNT: |
if (!ccs_io_printf(head, "%u-COMMENT=%s\n", |
1227 |
case CCS_SAKURA_RESTRICT_PIVOT_ROOT: |
index, ccs_profile->comment ? |
1228 |
case CCS_SAKURA_RESTRICT_AUTOBIND: |
ccs_profile->comment->name : "")) |
1229 |
#endif |
break; |
1230 |
#ifndef CONFIG_TOMOYO |
continue; |
1231 |
case CCS_TOMOYO_MAC_FOR_FILE: |
} |
1232 |
case CCS_TOMOYO_MAC_FOR_ARGV0: |
type--; |
1233 |
case CCS_TOMOYO_MAC_FOR_ENV: |
if (type >= CCS_MAX_CONTROL_INDEX) { |
1234 |
case CCS_TOMOYO_MAC_FOR_NETWORK: |
const int i = type - CCS_MAX_CONTROL_INDEX; |
1235 |
case CCS_TOMOYO_MAC_FOR_SIGNAL: |
const u8 value = ccs_profile->capability_value[i]; |
1236 |
case CCS_TOMOYO_MAX_ACCEPT_ENTRY: |
if (!ccs_io_printf(head, |
1237 |
case CCS_TOMOYO_MAX_GRANT_LOG: |
"%u-" KEYWORD_MAC_FOR_CAPABILITY |
1238 |
case CCS_TOMOYO_MAX_REJECT_LOG: |
"%s=%s\n", index, |
1239 |
case CCS_TOMOYO_VERBOSE: |
ccs_capability_control_keyword[i], |
1240 |
#endif |
ccs_mode_4[value])) |
1241 |
#ifndef ALT_EXEC |
break; |
1242 |
case CCS_TOMOYO_ALT_EXEC: |
} else { |
1243 |
case CCS_SLEEP_PERIOD: |
const unsigned int value = ccs_profile->value[type]; |
1244 |
#endif |
const char **modes = NULL; |
1245 |
continue; |
const char *keyword = ccs_control_array[type].keyword; |
1246 |
} |
switch (ccs_control_array[type].max_value) { |
1247 |
if (j == CCS_PROFILE_COMMENT) { |
case 3: |
1248 |
if (io_printf(head, "%u-%s=%s\n", i, ccs_control_array[CCS_PROFILE_COMMENT].keyword, profile->comment ? profile->comment->name : "")) break; |
modes = ccs_mode_4; |
1249 |
} else if (j == CCS_TOMOYO_ALT_EXEC) { |
break; |
1250 |
const struct path_info *alt_exec = profile->alt_exec; |
case 1: |
1251 |
if (io_printf(head, "%u-%s=%s\n", i, ccs_control_array[CCS_TOMOYO_ALT_EXEC].keyword, alt_exec ? alt_exec->name : "")) break; |
modes = ccs_mode_2; |
1252 |
} else { |
break; |
|
if (io_printf(head, "%u-%s=%u\n", i, ccs_control_array[j].keyword, profile->value[j])) break; |
|
|
} |
|
1253 |
} |
} |
1254 |
if (step == MAX_PROFILES * CCS_MAX_CONTROL_INDEX) { |
if (modes) { |
1255 |
head->read_var2 = (void *) ""; |
if (!ccs_io_printf(head, "%u-%s=%s\n", index, |
1256 |
head->read_step = 0; |
keyword, modes[value])) |
1257 |
|
break; |
1258 |
|
} else { |
1259 |
|
if (!ccs_io_printf(head, "%u-%s=%u\n", index, |
1260 |
|
keyword, value)) |
1261 |
|
break; |
1262 |
} |
} |
1263 |
} |
} |
|
if (head->read_var2) { |
|
|
#ifdef CONFIG_TOMOYO |
|
|
if (ReadCapabilityStatus(head) == 0) |
|
|
#endif |
|
|
head->read_eof = 1; |
|
|
} |
|
1264 |
} |
} |
1265 |
|
if (step == MAX_PROFILES * ccs_total) |
1266 |
|
head->read_eof = true; |
1267 |
return 0; |
return 0; |
1268 |
} |
} |
1269 |
|
|
1270 |
/************************* POLICY MANAGER HANDLER *************************/ |
/* The list for "struct ccs_policy_manager_entry". */ |
1271 |
|
LIST_HEAD(ccs_policy_manager_list); |
1272 |
|
|
1273 |
struct policy_manager_entry { |
/** |
1274 |
struct list1_head list; |
* ccs_update_manager_entry - Add a manager entry. |
1275 |
const struct path_info *manager; |
* |
1276 |
bool is_domain; |
* @manager: The path to manager or the domainnamme. |
1277 |
bool is_deleted; |
* @is_delete: True if it is a delete request. |
1278 |
}; |
* |
1279 |
|
* Returns 0 on success, negative value otherwise. |
1280 |
static LIST1_HEAD(policy_manager_list); |
*/ |
1281 |
|
static int ccs_update_manager_entry(const char *manager, const bool is_delete) |
|
static int AddManagerEntry(const char *manager, const bool is_delete) |
|
1282 |
{ |
{ |
1283 |
struct policy_manager_entry *new_entry, *ptr; |
struct ccs_policy_manager_entry *entry = NULL; |
1284 |
static DEFINE_MUTEX(lock); |
struct ccs_policy_manager_entry *ptr; |
1285 |
const struct path_info *saved_manager; |
const struct ccs_path_info *saved_manager; |
1286 |
int error = -ENOMEM; |
int error = is_delete ? -ENOENT : -ENOMEM; |
1287 |
bool is_domain = 0; |
bool is_domain = false; |
1288 |
if (!isRoot()) return -EPERM; |
if (ccs_is_domain_def(manager)) { |
1289 |
if (IsDomainDef(manager)) { |
if (!ccs_is_correct_domain(manager)) |
1290 |
if (!IsCorrectDomain(manager, __FUNCTION__)) return -EINVAL; |
return -EINVAL; |
1291 |
is_domain = 1; |
is_domain = true; |
1292 |
} else { |
} else { |
1293 |
if (!IsCorrectPath(manager, 1, -1, -1, __FUNCTION__)) return -EINVAL; |
if (!ccs_is_correct_path(manager, 1, -1, -1)) |
1294 |
|
return -EINVAL; |
1295 |
} |
} |
1296 |
if ((saved_manager = SaveName(manager)) == NULL) return -ENOMEM; |
saved_manager = ccs_get_name(manager); |
1297 |
mutex_lock(&lock); |
if (!saved_manager) |
1298 |
list1_for_each_entry(ptr, &policy_manager_list, list) { |
return -ENOMEM; |
1299 |
if (ptr->manager == saved_manager) { |
if (!is_delete) |
1300 |
ptr->is_deleted = is_delete; |
entry = kzalloc(sizeof(*entry), GFP_KERNEL); |
1301 |
error = 0; |
mutex_lock(&ccs_policy_lock); |
1302 |
goto out; |
list_for_each_entry_rcu(ptr, &ccs_policy_manager_list, list) { |
1303 |
} |
if (ptr->manager != saved_manager) |
1304 |
|
continue; |
1305 |
|
ptr->is_deleted = is_delete; |
1306 |
|
error = 0; |
1307 |
|
break; |
1308 |
} |
} |
1309 |
if (is_delete) { |
if (!is_delete && error && ccs_memory_ok(entry, sizeof(*entry))) { |
1310 |
error = -ENOENT; |
entry->manager = saved_manager; |
1311 |
goto out; |
saved_manager = NULL; |
1312 |
|
entry->is_domain = is_domain; |
1313 |
|
list_add_tail_rcu(&entry->list, &ccs_policy_manager_list); |
1314 |
|
entry = NULL; |
1315 |
|
error = 0; |
1316 |
} |
} |
1317 |
if ((new_entry = alloc_element(sizeof(*new_entry))) == NULL) goto out; |
mutex_unlock(&ccs_policy_lock); |
1318 |
new_entry->manager = saved_manager; |
ccs_put_name(saved_manager); |
1319 |
new_entry->is_domain = is_domain; |
kfree(entry); |
|
list1_add_tail_mb(&new_entry->list, &policy_manager_list); |
|
|
error = 0; |
|
|
out: |
|
|
mutex_unlock(&lock); |
|
|
if (!error) UpdateCounter(CCS_UPDATES_COUNTER_MANAGER); |
|
1320 |
return error; |
return error; |
1321 |
} |
} |
1322 |
|
|
1323 |
static int AddManagerPolicy(struct io_buffer *head) |
/** |
1324 |
|
* ccs_write_manager_policy - Write manager policy. |
1325 |
|
* |
1326 |
|
* @head: Pointer to "struct ccs_io_buffer". |
1327 |
|
* |
1328 |
|
* Returns 0 on success, negative value otherwise. |
1329 |
|
*/ |
1330 |
|
static int ccs_write_manager_policy(struct ccs_io_buffer *head) |
1331 |
{ |
{ |
1332 |
const char *data = head->write_buf; |
char *data = head->write_buf; |
1333 |
bool is_delete = 0; |
bool is_delete = ccs_str_starts(&data, KEYWORD_DELETE); |
1334 |
if (!isRoot()) return -EPERM; |
if (!strcmp(data, "manage_by_non_root")) { |
1335 |
if (strncmp(data, KEYWORD_DELETE, KEYWORD_DELETE_LEN) == 0) { |
ccs_manage_by_non_root = !is_delete; |
1336 |
data += KEYWORD_DELETE_LEN; |
return 0; |
|
is_delete = 1; |
|
|
} |
|
|
return AddManagerEntry(data, is_delete); |
|
|
} |
|
|
|
|
|
static int ReadManagerPolicy(struct io_buffer *head) |
|
|
{ |
|
|
struct list1_head *pos; |
|
|
if (head->read_eof) return 0; |
|
|
if (!isRoot()) return -EPERM; |
|
|
list1_for_each_cookie(pos, head->read_var2, &policy_manager_list) { |
|
|
struct policy_manager_entry *ptr; |
|
|
ptr = list1_entry(pos, struct policy_manager_entry, list); |
|
|
if (ptr->is_deleted) continue; |
|
|
if (io_printf(head, "%s\n", ptr->manager->name)) return 0; |
|
1337 |
} |
} |
1338 |
head->read_eof = 1; |
return ccs_update_manager_entry(data, is_delete); |
1339 |
|
} |
1340 |
|
|
1341 |
|
/** |
1342 |
|
* ccs_read_manager_policy - Read manager policy. |
1343 |
|
* |
1344 |
|
* @head: Pointer to "struct ccs_io_buffer". |
1345 |
|
* |
1346 |
|
* Returns 0. |
1347 |
|
* |
1348 |
|
* Caller holds srcu_read_lock(&ccs_ss). |
1349 |
|
*/ |
1350 |
|
static int ccs_read_manager_policy(struct ccs_io_buffer *head) |
1351 |
|
{ |
1352 |
|
struct list_head *pos; |
1353 |
|
if (head->read_eof) |
1354 |
|
return 0; |
1355 |
|
list_for_each_cookie(pos, head->read_var2, &ccs_policy_manager_list) { |
1356 |
|
struct ccs_policy_manager_entry *ptr; |
1357 |
|
ptr = list_entry(pos, struct ccs_policy_manager_entry, list); |
1358 |
|
if (ptr->is_deleted) |
1359 |
|
continue; |
1360 |
|
if (!ccs_io_printf(head, "%s\n", ptr->manager->name)) |
1361 |
|
return 0; |
1362 |
|
} |
1363 |
|
head->read_eof = true; |
1364 |
return 0; |
return 0; |
1365 |
} |
} |
1366 |
|
|
1367 |
/* Check whether the current process is a policy manager. */ |
/** |
1368 |
static int IsPolicyManager(void) |
* ccs_is_policy_manager - Check whether the current process is a policy manager. |
1369 |
|
* |
1370 |
|
* Returns true if the current process is permitted to modify policy |
1371 |
|
* via /proc/ccs/ interface. |
1372 |
|
* |
1373 |
|
* Caller holds srcu_read_lock(&ccs_ss). |
1374 |
|
*/ |
1375 |
|
static bool ccs_is_policy_manager(void) |
1376 |
{ |
{ |
1377 |
struct policy_manager_entry *ptr; |
struct ccs_policy_manager_entry *ptr; |
1378 |
const char *exe; |
const char *exe; |
1379 |
const struct path_info *domainname = current->domain_info->domainname; |
struct task_struct *task = current; |
1380 |
bool found = 0; |
const struct ccs_path_info *domainname |
1381 |
if (!sbin_init_started) return 1; |
= ccs_current_domain()->domainname; |
1382 |
list1_for_each_entry(ptr, &policy_manager_list, list) { |
bool found = false; |
1383 |
if (!ptr->is_deleted && ptr->is_domain && !pathcmp(domainname, ptr->manager)) return 1; |
if (!ccs_policy_loaded) |
1384 |
} |
return true; |
1385 |
if ((exe = GetEXE()) == NULL) return 0; |
if (task->ccs_flags & CCS_TASK_IS_POLICY_MANAGER) |
1386 |
list1_for_each_entry(ptr, &policy_manager_list, list) { |
return true; |
1387 |
if (!ptr->is_deleted && !ptr->is_domain && !strcmp(exe, ptr->manager->name)) { |
if (!ccs_manage_by_non_root && (current_uid() || current_euid())) |
1388 |
found = 1; |
return false; |
1389 |
|
list_for_each_entry_rcu(ptr, &ccs_policy_manager_list, list) { |
1390 |
|
if (!ptr->is_deleted && ptr->is_domain |
1391 |
|
&& !ccs_pathcmp(domainname, ptr->manager)) { |
1392 |
|
/* Set manager flag. */ |
1393 |
|
task->ccs_flags |= CCS_TASK_IS_POLICY_MANAGER; |
1394 |
|
return true; |
1395 |
|
} |
1396 |
|
} |
1397 |
|
exe = ccs_get_exe(); |
1398 |
|
if (!exe) |
1399 |
|
return false; |
1400 |
|
list_for_each_entry_rcu(ptr, &ccs_policy_manager_list, list) { |
1401 |
|
if (!ptr->is_deleted && !ptr->is_domain |
1402 |
|
&& !strcmp(exe, ptr->manager->name)) { |
1403 |
|
found = true; |
1404 |
|
/* Set manager flag. */ |
1405 |
|
task->ccs_flags |= CCS_TASK_IS_POLICY_MANAGER; |
1406 |
break; |
break; |
1407 |
} |
} |
1408 |
} |
} |
1409 |
if (!found) { /* Reduce error messages. */ |
if (!found) { /* Reduce error messages. */ |
1410 |
static pid_t last_pid = 0; |
static pid_t ccs_last_pid; |
1411 |
const pid_t pid = current->pid; |
const pid_t pid = current->pid; |
1412 |
if (last_pid != pid) { |
if (ccs_last_pid != pid) { |
1413 |
printk("%s ( %s ) is not permitted to update policies.\n", domainname->name, exe); |
printk(KERN_WARNING "%s ( %s ) is not permitted to " |
1414 |
last_pid = pid; |
"update policies.\n", domainname->name, exe); |
1415 |
|
ccs_last_pid = pid; |
1416 |
} |
} |
1417 |
} |
} |
1418 |
ccs_free(exe); |
kfree(exe); |
1419 |
return found; |
return found; |
1420 |
} |
} |
1421 |
|
|
1422 |
#ifdef CONFIG_TOMOYO |
/** |
1423 |
|
* ccs_find_condition_part - Find condition part from the statement. |
1424 |
/************************* DOMAIN POLICY HANDLER *************************/ |
* |
1425 |
|
* @data: String to parse. |
1426 |
static char *FindConditionPart(char *data) |
* |
1427 |
|
* Returns pointer to the condition part if it was found in the statement, |
1428 |
|
* NULL otherwise. |
1429 |
|
*/ |
1430 |
|
static char *ccs_find_condition_part(char *data) |
1431 |
{ |
{ |
1432 |
char *cp = strstr(data, " if "), *cp2; |
char *cp = strstr(data, " if "); |
1433 |
if (cp) { |
if (cp) { |
1434 |
while ((cp2 = strstr(cp + 3, " if ")) != NULL) cp = cp2; |
while (1) { |
1435 |
|
char *cp2 = strstr(cp + 3, " if "); |
1436 |
|
if (!cp2) |
1437 |
|
break; |
1438 |
|
cp = cp2; |
1439 |
|
} |
1440 |
*cp++ = '\0'; |
*cp++ = '\0'; |
1441 |
|
} else { |
1442 |
|
cp = strstr(data, " ; set "); |
1443 |
|
if (cp) |
1444 |
|
*cp++ = '\0'; |
1445 |
} |
} |
1446 |
return cp; |
return cp; |
1447 |
} |
} |
1448 |
|
|
1449 |
static int AddDomainPolicy(struct io_buffer *head) |
/** |
1450 |
|
* ccs_is_select_one - Parse select command. |
1451 |
|
* |
1452 |
|
* @head: Pointer to "struct ccs_io_buffer". |
1453 |
|
* @data: String to parse. |
1454 |
|
* |
1455 |
|
* Returns true on success, false otherwise. |
1456 |
|
* |
1457 |
|
* Caller holds srcu_read_lock(&ccs_ss). |
1458 |
|
*/ |
1459 |
|
static bool ccs_is_select_one(struct ccs_io_buffer *head, const char *data) |
1460 |
|
{ |
1461 |
|
unsigned int pid; |
1462 |
|
struct ccs_domain_info *domain = NULL; |
1463 |
|
if (!strcmp(data, "allow_execute")) { |
1464 |
|
head->read_execute_only = true; |
1465 |
|
return true; |
1466 |
|
} |
1467 |
|
if (sscanf(data, "pid=%u", &pid) == 1) { |
1468 |
|
struct task_struct *p; |
1469 |
|
/***** CRITICAL SECTION START *****/ |
1470 |
|
read_lock(&tasklist_lock); |
1471 |
|
p = find_task_by_pid(pid); |
1472 |
|
if (p) |
1473 |
|
domain = ccs_task_domain(p); |
1474 |
|
read_unlock(&tasklist_lock); |
1475 |
|
/***** CRITICAL SECTION END *****/ |
1476 |
|
} else if (!strncmp(data, "domain=", 7)) { |
1477 |
|
if (ccs_is_domain_def(data + 7)) |
1478 |
|
domain = ccs_find_domain(data + 7); |
1479 |
|
} else |
1480 |
|
return false; |
1481 |
|
head->write_var1 = domain; |
1482 |
|
/* Accessing read_buf is safe because head->io_sem is held. */ |
1483 |
|
if (!head->read_buf) |
1484 |
|
return true; /* Do nothing if open(O_WRONLY). */ |
1485 |
|
head->read_avail = 0; |
1486 |
|
ccs_io_printf(head, "# select %s\n", data); |
1487 |
|
head->read_single_domain = true; |
1488 |
|
head->read_eof = !domain; |
1489 |
|
if (domain) { |
1490 |
|
struct ccs_domain_info *d; |
1491 |
|
head->read_var1 = NULL; |
1492 |
|
list_for_each_entry_rcu(d, &ccs_domain_list, list) { |
1493 |
|
if (d == domain) |
1494 |
|
break; |
1495 |
|
head->read_var1 = &d->list; |
1496 |
|
} |
1497 |
|
head->read_var2 = NULL; |
1498 |
|
head->read_bit = 0; |
1499 |
|
head->read_step = 0; |
1500 |
|
if (domain->is_deleted) |
1501 |
|
ccs_io_printf(head, "# This is a deleted domain.\n"); |
1502 |
|
} |
1503 |
|
return true; |
1504 |
|
} |
1505 |
|
|
1506 |
|
/** |
1507 |
|
* ccs_write_domain_policy - Write domain policy. |
1508 |
|
* |
1509 |
|
* @head: Pointer to "struct ccs_io_buffer". |
1510 |
|
* |
1511 |
|
* Returns 0 on success, negative value otherwise. |
1512 |
|
*/ |
1513 |
|
static int ccs_write_domain_policy(struct ccs_io_buffer *head) |
1514 |
{ |
{ |
1515 |
char *data = head->write_buf; |
char *data = head->write_buf; |
1516 |
struct domain_info *domain = head->write_var1; |
struct ccs_domain_info *domain = head->write_var1; |
1517 |
bool is_delete = 0, is_select = 0, is_undelete = 0; |
bool is_delete = false; |
1518 |
|
bool is_select = false; |
1519 |
unsigned int profile; |
unsigned int profile; |
1520 |
const struct condition_list *cond = NULL; |
struct ccs_condition *cond = NULL; |
1521 |
char *cp; |
char *cp; |
1522 |
if (!isRoot()) return -EPERM; |
int error; |
1523 |
if (strncmp(data, KEYWORD_DELETE, KEYWORD_DELETE_LEN) == 0) { |
if (ccs_str_starts(&data, KEYWORD_DELETE)) |
1524 |
data += KEYWORD_DELETE_LEN; |
is_delete = true; |
1525 |
is_delete = 1; |
else if (ccs_str_starts(&data, KEYWORD_SELECT)) |
1526 |
} else if (strncmp(data, KEYWORD_SELECT, KEYWORD_SELECT_LEN) == 0) { |
is_select = true; |
1527 |
data += KEYWORD_SELECT_LEN; |
if (is_select && ccs_is_select_one(head, data)) |
1528 |
is_select = 1; |
return 0; |
1529 |
} else if (strncmp(data, KEYWORD_UNDELETE, KEYWORD_UNDELETE_LEN) == 0) { |
/* Don't allow updating policies by non manager programs. */ |
1530 |
data += KEYWORD_UNDELETE_LEN; |
if (!ccs_is_policy_manager()) |
1531 |
is_undelete = 1; |
return -EPERM; |
1532 |
} |
if (ccs_is_domain_def(data)) { |
1533 |
UpdateCounter(CCS_UPDATES_COUNTER_DOMAIN_POLICY); |
domain = NULL; |
1534 |
if (IsDomainDef(data)) { |
if (is_delete) |
1535 |
if (is_delete) { |
ccs_delete_domain(data); |
1536 |
DeleteDomain(data); |
else if (is_select) |
1537 |
domain = NULL; |
domain = ccs_find_domain(data); |
1538 |
} else if (is_select) { |
else |
1539 |
domain = FindDomain(data); |
domain = ccs_find_or_assign_new_domain(data, 0); |
|
} else if (is_undelete) { |
|
|
domain = UndeleteDomain(data); |
|
|
} else { |
|
|
domain = FindOrAssignNewDomain(data, 0); |
|
|
} |
|
1540 |
head->write_var1 = domain; |
head->write_var1 = domain; |
1541 |
return 0; |
return 0; |
1542 |
} |
} |
1543 |
if (!domain) return -EINVAL; |
if (!domain) |
1544 |
|
return -EINVAL; |
1545 |
|
|
1546 |
if (sscanf(data, KEYWORD_USE_PROFILE "%u", &profile) == 1 && profile < MAX_PROFILES) { |
if (sscanf(data, KEYWORD_USE_PROFILE "%u", &profile) == 1 |
1547 |
if (profile_ptr[profile] || !sbin_init_started) domain->profile = (u8) profile; |
&& profile < MAX_PROFILES) { |
1548 |
|
if (ccs_profile_ptr[profile] || !ccs_policy_loaded) |
1549 |
|
domain->profile = (u8) profile; |
1550 |
|
return 0; |
1551 |
|
} |
1552 |
|
if (!strcmp(data, KEYWORD_IGNORE_GLOBAL_ALLOW_READ)) { |
1553 |
|
domain->ignore_global_allow_read = !is_delete; |
1554 |
return 0; |
return 0; |
1555 |
} |
} |
1556 |
cp = FindConditionPart(data); |
if (!strcmp(data, KEYWORD_IGNORE_GLOBAL_ALLOW_ENV)) { |
1557 |
if (cp && (cond = FindOrAssignNewCondition(cp)) == NULL) return -EINVAL; |
domain->ignore_global_allow_env = !is_delete; |
1558 |
if (strncmp(data, KEYWORD_ALLOW_CAPABILITY, KEYWORD_ALLOW_CAPABILITY_LEN) == 0) { |
return 0; |
1559 |
return AddCapabilityPolicy(data + KEYWORD_ALLOW_CAPABILITY_LEN, domain, cond, is_delete); |
} |
1560 |
} else if (strncmp(data, KEYWORD_ALLOW_NETWORK, KEYWORD_ALLOW_NETWORK_LEN) == 0) { |
cp = ccs_find_condition_part(data); |
1561 |
return AddNetworkPolicy(data + KEYWORD_ALLOW_NETWORK_LEN, domain, cond, is_delete); |
if (cp) { |
1562 |
} else if (strncmp(data, KEYWORD_ALLOW_SIGNAL, KEYWORD_ALLOW_SIGNAL_LEN) == 0) { |
cond = ccs_get_condition(cp); |
1563 |
return AddSignalPolicy(data + KEYWORD_ALLOW_SIGNAL_LEN, domain, cond, is_delete); |
if (!cond) |
1564 |
} else if (strncmp(data, KEYWORD_ALLOW_ARGV0, KEYWORD_ALLOW_ARGV0_LEN) == 0) { |
return -EINVAL; |
1565 |
return AddArgv0Policy(data + KEYWORD_ALLOW_ARGV0_LEN, domain, cond, is_delete); |
} |
1566 |
} else if (strncmp(data, KEYWORD_ALLOW_ENV, KEYWORD_ALLOW_ENV_LEN) == 0) { |
if (ccs_str_starts(&data, KEYWORD_ALLOW_CAPABILITY)) |
1567 |
return AddEnvPolicy(data + KEYWORD_ALLOW_ENV_LEN, domain, cond, is_delete); |
error = ccs_write_capability_policy(data, domain, cond, |
1568 |
|
is_delete); |
1569 |
|
else if (ccs_str_starts(&data, KEYWORD_ALLOW_NETWORK)) |
1570 |
|
error = ccs_write_network_policy(data, domain, cond, is_delete); |
1571 |
|
else if (ccs_str_starts(&data, KEYWORD_ALLOW_SIGNAL)) |
1572 |
|
error = ccs_write_signal_policy(data, domain, cond, is_delete); |
1573 |
|
else if (ccs_str_starts(&data, KEYWORD_ALLOW_ARGV0)) |
1574 |
|
error = ccs_write_argv0_policy(data, domain, cond, is_delete); |
1575 |
|
else if (ccs_str_starts(&data, KEYWORD_ALLOW_ENV)) |
1576 |
|
error = ccs_write_env_policy(data, domain, cond, is_delete); |
1577 |
|
else if (ccs_str_starts(&data, KEYWORD_ALLOW_IOCTL)) |
1578 |
|
error = ccs_write_ioctl_policy(data, domain, cond, is_delete); |
1579 |
|
else if (ccs_str_starts(&data, KEYWORD_ALLOW_MOUNT)) |
1580 |
|
error = ccs_write_mount_policy(data, domain, cond, is_delete); |
1581 |
|
else if (ccs_str_starts(&data, KEYWORD_ALLOW_UNMOUNT)) |
1582 |
|
error = ccs_write_umount_policy(data, domain, cond, is_delete); |
1583 |
|
else if (ccs_str_starts(&data, KEYWORD_ALLOW_CHROOT)) |
1584 |
|
error = ccs_write_chroot_policy(data, domain, cond, is_delete); |
1585 |
|
else if (ccs_str_starts(&data, KEYWORD_ALLOW_PIVOT_ROOT)) |
1586 |
|
error = ccs_write_pivot_root_policy(data, domain, cond, |
1587 |
|
is_delete); |
1588 |
|
else |
1589 |
|
error = ccs_write_file_policy(data, domain, cond, is_delete); |
1590 |
|
if (cond) |
1591 |
|
ccs_put_condition(cond); |
1592 |
|
return error; |
1593 |
|
} |
1594 |
|
|
1595 |
|
/** |
1596 |
|
* ccs_print_single_path_acl - Print a single path ACL entry. |
1597 |
|
* |
1598 |
|
* @head: Pointer to "struct ccs_io_buffer". |
1599 |
|
* @ptr: Pointer to "struct ccs_single_path_acl_record". |
1600 |
|
* @cond: Pointer to "struct ccs_condition". May be NULL. |
1601 |
|
* |
1602 |
|
* Returns true on success, false otherwise. |
1603 |
|
*/ |
1604 |
|
static bool ccs_print_single_path_acl(struct ccs_io_buffer *head, |
1605 |
|
struct ccs_single_path_acl_record *ptr, |
1606 |
|
const struct ccs_condition *cond) |
1607 |
|
{ |
1608 |
|
int pos; |
1609 |
|
u8 bit; |
1610 |
|
const char *atmark = ""; |
1611 |
|
const char *filename; |
1612 |
|
const u16 perm = ptr->perm; |
1613 |
|
if (ptr->u_is_group) { |
1614 |
|
atmark = "@"; |
1615 |
|
filename = ptr->u.group->group_name->name; |
1616 |
} else { |
} else { |
1617 |
return AddFilePolicy(data, domain, cond, is_delete); |
filename = ptr->u.filename->name; |
1618 |
} |
} |
1619 |
return -EINVAL; |
for (bit = head->read_bit; bit < MAX_SINGLE_PATH_OPERATION; bit++) { |
1620 |
|
const char *msg; |
1621 |
|
if (!(perm & (1 << bit))) |
1622 |
|
continue; |
1623 |
|
if (head->read_execute_only && bit != TYPE_EXECUTE_ACL) |
1624 |
|
continue; |
1625 |
|
/* Print "read/write" instead of "read" and "write". */ |
1626 |
|
if ((bit == TYPE_READ_ACL || bit == TYPE_WRITE_ACL) |
1627 |
|
&& (perm & (1 << TYPE_READ_WRITE_ACL))) |
1628 |
|
continue; |
1629 |
|
msg = ccs_sp2keyword(bit); |
1630 |
|
pos = head->read_avail; |
1631 |
|
if (!ccs_io_printf(head, "allow_%s %s%s", msg, |
1632 |
|
atmark, filename) || |
1633 |
|
!ccs_print_condition(head, cond)) |
1634 |
|
goto out; |
1635 |
|
} |
1636 |
|
head->read_bit = 0; |
1637 |
|
return true; |
1638 |
|
out: |
1639 |
|
head->read_bit = bit; |
1640 |
|
head->read_avail = pos; |
1641 |
|
return false; |
1642 |
|
} |
1643 |
|
|
1644 |
|
/** |
1645 |
|
* ccs_print_mkdev_acl - Print a mkdev ACL entry. |
1646 |
|
* |
1647 |
|
* @head: Pointer to "struct ccs_io_buffer". |
1648 |
|
* @ptr: Pointer to "struct ccs_mkdev_acl_record". |
1649 |
|
* @cond: Pointer to "struct ccs_condition". May be NULL. |
1650 |
|
* |
1651 |
|
* Returns true on success, false otherwise. |
1652 |
|
*/ |
1653 |
|
static bool ccs_print_mkdev_acl(struct ccs_io_buffer *head, |
1654 |
|
struct ccs_mkdev_acl_record *ptr, |
1655 |
|
const struct ccs_condition *cond) |
1656 |
|
{ |
1657 |
|
int pos; |
1658 |
|
u8 bit; |
1659 |
|
const char *atmark = ""; |
1660 |
|
const char *filename; |
1661 |
|
const u16 perm = ptr->perm; |
1662 |
|
if (ptr->u_is_group) { |
1663 |
|
atmark = "@"; |
1664 |
|
filename = ptr->u.group->group_name->name; |
1665 |
|
} else { |
1666 |
|
filename = ptr->u.filename->name; |
1667 |
|
} |
1668 |
|
for (bit = head->read_bit; bit < MAX_MKDEV_OPERATION; bit++) { |
1669 |
|
const char *msg; |
1670 |
|
const unsigned int min_major = ptr->min_major; |
1671 |
|
const unsigned int max_major = ptr->max_major; |
1672 |
|
const unsigned int min_minor = ptr->min_minor; |
1673 |
|
const unsigned int max_minor = ptr->max_minor; |
1674 |
|
if (!(perm & (1 << bit))) |
1675 |
|
continue; |
1676 |
|
msg = ccs_mkdev2keyword(bit); |
1677 |
|
pos = head->read_avail; |
1678 |
|
if (!ccs_io_printf(head, "allow_%s %s%s %u", msg, atmark, |
1679 |
|
filename, min_major) || |
1680 |
|
(min_major != max_major && |
1681 |
|
!ccs_io_printf(head, "-%u", max_major)) || |
1682 |
|
!ccs_io_printf(head, " %u", min_minor) || |
1683 |
|
(min_minor != max_minor && |
1684 |
|
!ccs_io_printf(head, "-%u", max_minor)) || |
1685 |
|
!ccs_print_condition(head, cond)) |
1686 |
|
goto out; |
1687 |
|
} |
1688 |
|
head->read_bit = 0; |
1689 |
|
return true; |
1690 |
|
out: |
1691 |
|
head->read_bit = bit; |
1692 |
|
head->read_avail = pos; |
1693 |
|
return false; |
1694 |
|
} |
1695 |
|
|
1696 |
|
/** |
1697 |
|
* ccs_print_double_path_acl - Print a double path ACL entry. |
1698 |
|
* |
1699 |
|
* @head: Pointer to "struct ccs_io_buffer". |
1700 |
|
* @ptr: Pointer to "struct ccs_double_path_acl_record". |
1701 |
|
* @cond: Pointer to "struct ccs_condition". May be NULL. |
1702 |
|
* |
1703 |
|
* Returns true on success, false otherwise. |
1704 |
|
*/ |
1705 |
|
static bool ccs_print_double_path_acl(struct ccs_io_buffer *head, |
1706 |
|
struct ccs_double_path_acl_record *ptr, |
1707 |
|
const struct ccs_condition *cond) |
1708 |
|
{ |
1709 |
|
int pos; |
1710 |
|
const char *atmark1 = ""; |
1711 |
|
const char *atmark2 = ""; |
1712 |
|
const char *filename1; |
1713 |
|
const char *filename2; |
1714 |
|
const u8 perm = ptr->perm; |
1715 |
|
u8 bit; |
1716 |
|
if (ptr->u1_is_group) { |
1717 |
|
atmark1 = "@"; |
1718 |
|
filename1 = ptr->u1.group1->group_name->name; |
1719 |
|
} else { |
1720 |
|
filename1 = ptr->u1.filename1->name; |
1721 |
|
} |
1722 |
|
if (ptr->u2_is_group) { |
1723 |
|
atmark2 = "@"; |
1724 |
|
filename2 = ptr->u2.group2->group_name->name; |
1725 |
|
} else { |
1726 |
|
filename2 = ptr->u2.filename2->name; |
1727 |
|
} |
1728 |
|
for (bit = head->read_bit; bit < MAX_DOUBLE_PATH_OPERATION; bit++) { |
1729 |
|
const char *msg; |
1730 |
|
if (!(perm & (1 << bit))) |
1731 |
|
continue; |
1732 |
|
msg = ccs_dp2keyword(bit); |
1733 |
|
pos = head->read_avail; |
1734 |
|
if (!ccs_io_printf(head, "allow_%s %s%s %s%s", msg, |
1735 |
|
atmark1, filename1, atmark2, filename2) || |
1736 |
|
!ccs_print_condition(head, cond)) |
1737 |
|
goto out; |
1738 |
|
} |
1739 |
|
head->read_bit = 0; |
1740 |
|
return true; |
1741 |
|
out: |
1742 |
|
head->read_bit = bit; |
1743 |
|
head->read_avail = pos; |
1744 |
|
return false; |
1745 |
|
} |
1746 |
|
|
1747 |
|
/** |
1748 |
|
* ccs_print_ioctl_acl - Print an ioctl ACL entry. |
1749 |
|
* |
1750 |
|
* @head: Pointer to "struct ccs_io_buffer". |
1751 |
|
* @ptr: Pointer to "struct ccs_ioctl_acl_record". |
1752 |
|
* @cond: Pointer to "struct ccs_condition". May be NULL. |
1753 |
|
* |
1754 |
|
* Returns true on success, false otherwise. |
1755 |
|
*/ |
1756 |
|
static bool ccs_print_ioctl_acl(struct ccs_io_buffer *head, |
1757 |
|
struct ccs_ioctl_acl_record *ptr, |
1758 |
|
const struct ccs_condition *cond) |
1759 |
|
{ |
1760 |
|
int pos = head->read_avail; |
1761 |
|
const char *atmark = ""; |
1762 |
|
const char *filename; |
1763 |
|
const unsigned int cmd_min = ptr->cmd_min; |
1764 |
|
const unsigned int cmd_max = ptr->cmd_max; |
1765 |
|
if (ptr->u_is_group) { |
1766 |
|
atmark = "@"; |
1767 |
|
filename = ptr->u.group->group_name->name; |
1768 |
|
} else { |
1769 |
|
filename = ptr->u.filename->name; |
1770 |
|
} |
1771 |
|
if (!ccs_io_printf(head, KEYWORD_ALLOW_IOCTL "%s%s ", atmark, filename)) |
1772 |
|
goto out; |
1773 |
|
if (!ccs_io_printf(head, "%u", cmd_min)) |
1774 |
|
goto out; |
1775 |
|
if (cmd_min != cmd_max && !ccs_io_printf(head, "-%u", cmd_max)) |
1776 |
|
goto out; |
1777 |
|
if (!ccs_print_condition(head, cond)) |
1778 |
|
goto out; |
1779 |
|
return true; |
1780 |
|
out: |
1781 |
|
head->read_avail = pos; |
1782 |
|
return false; |
1783 |
|
} |
1784 |
|
|
1785 |
|
/** |
1786 |
|
* ccs_print_argv0_acl - Print an argv[0] ACL entry. |
1787 |
|
* |
1788 |
|
* @head: Pointer to "struct ccs_io_buffer". |
1789 |
|
* @ptr: Pointer to "struct ccs_argv0_acl_record". |
1790 |
|
* @cond: Pointer to "struct ccs_condition". May be NULL. |
1791 |
|
* |
1792 |
|
* Returns true on success, false otherwise. |
1793 |
|
*/ |
1794 |
|
static bool ccs_print_argv0_acl(struct ccs_io_buffer *head, |
1795 |
|
struct ccs_argv0_acl_record *ptr, |
1796 |
|
const struct ccs_condition *cond) |
1797 |
|
{ |
1798 |
|
int pos = head->read_avail; |
1799 |
|
if (!ccs_io_printf(head, KEYWORD_ALLOW_ARGV0 "%s %s", |
1800 |
|
ptr->filename->name, ptr->argv0->name)) |
1801 |
|
goto out; |
1802 |
|
if (!ccs_print_condition(head, cond)) |
1803 |
|
goto out; |
1804 |
|
return true; |
1805 |
|
out: |
1806 |
|
head->read_avail = pos; |
1807 |
|
return false; |
1808 |
} |
} |
1809 |
|
|
1810 |
static int ReadDomainPolicy(struct io_buffer *head) |
/** |
1811 |
|
* ccs_print_env_acl - Print an evironment variable name's ACL entry. |
1812 |
|
* |
1813 |
|
* @head: Pointer to "struct ccs_io_buffer". |
1814 |
|
* @ptr: Pointer to "struct ccs_env_acl_record". |
1815 |
|
* @cond: Pointer to "struct ccs_condition". May be NULL. |
1816 |
|
* |
1817 |
|
* Returns true on success, false otherwise. |
1818 |
|
*/ |
1819 |
|
static bool ccs_print_env_acl(struct ccs_io_buffer *head, |
1820 |
|
struct ccs_env_acl_record *ptr, |
1821 |
|
const struct ccs_condition *cond) |
1822 |
{ |
{ |
1823 |
struct list1_head *dpos; |
int pos = head->read_avail; |
1824 |
struct list1_head *apos; |
if (!ccs_io_printf(head, KEYWORD_ALLOW_ENV "%s", ptr->env->name)) |
1825 |
if (head->read_eof) return 0; |
goto out; |
1826 |
if (head->read_step == 0) { |
if (!ccs_print_condition(head, cond)) |
1827 |
if (!isRoot()) return -EPERM; |
goto out; |
1828 |
head->read_step = 1; |
return true; |
1829 |
|
out: |
1830 |
|
head->read_avail = pos; |
1831 |
|
return false; |
1832 |
|
} |
1833 |
|
|
1834 |
|
/** |
1835 |
|
* ccs_print_capability_acl - Print a capability ACL entry. |
1836 |
|
* |
1837 |
|
* @head: Pointer to "struct ccs_io_buffer". |
1838 |
|
* @ptr: Pointer to "struct ccs_capability_acl_record". |
1839 |
|
* @cond: Pointer to "struct ccs_condition". May be NULL. |
1840 |
|
* |
1841 |
|
* Returns true on success, false otherwise. |
1842 |
|
*/ |
1843 |
|
static bool ccs_print_capability_acl(struct ccs_io_buffer *head, |
1844 |
|
struct ccs_capability_acl_record *ptr, |
1845 |
|
const struct ccs_condition *cond) |
1846 |
|
{ |
1847 |
|
int pos = head->read_avail; |
1848 |
|
if (!ccs_io_printf(head, KEYWORD_ALLOW_CAPABILITY "%s", |
1849 |
|
ccs_cap2keyword(ptr->operation))) |
1850 |
|
goto out; |
1851 |
|
if (!ccs_print_condition(head, cond)) |
1852 |
|
goto out; |
1853 |
|
return true; |
1854 |
|
out: |
1855 |
|
head->read_avail = pos; |
1856 |
|
return false; |
1857 |
|
} |
1858 |
|
|
1859 |
|
/** |
1860 |
|
* ccs_print_ipv4_entry - Print IPv4 address of a network ACL entry. |
1861 |
|
* |
1862 |
|
* @head: Pointer to "struct ccs_io_buffer". |
1863 |
|
* @ptr: Pointer to "struct ccs_ip_network_acl_record". |
1864 |
|
* |
1865 |
|
* Returns true on success, false otherwise. |
1866 |
|
*/ |
1867 |
|
static bool ccs_print_ipv4_entry(struct ccs_io_buffer *head, |
1868 |
|
struct ccs_ip_network_acl_record *ptr) |
1869 |
|
{ |
1870 |
|
const u32 min_address = ptr->u.ipv4.min; |
1871 |
|
const u32 max_address = ptr->u.ipv4.max; |
1872 |
|
if (!ccs_io_printf(head, "%u.%u.%u.%u", HIPQUAD(min_address))) |
1873 |
|
return false; |
1874 |
|
if (min_address != max_address |
1875 |
|
&& !ccs_io_printf(head, "-%u.%u.%u.%u", HIPQUAD(max_address))) |
1876 |
|
return false; |
1877 |
|
return true; |
1878 |
|
} |
1879 |
|
|
1880 |
|
/** |
1881 |
|
* ccs_print_ipv6_entry - Print IPv6 address of a network ACL entry. |
1882 |
|
* |
1883 |
|
* @head: Pointer to "struct ccs_io_buffer". |
1884 |
|
* @ptr: Pointer to "struct ccs_ip_network_acl_record". |
1885 |
|
* |
1886 |
|
* Returns true on success, false otherwise. |
1887 |
|
*/ |
1888 |
|
static bool ccs_print_ipv6_entry(struct ccs_io_buffer *head, |
1889 |
|
struct ccs_ip_network_acl_record *ptr) |
1890 |
|
{ |
1891 |
|
char buf[64]; |
1892 |
|
const struct in6_addr *min_address = ptr->u.ipv6.min; |
1893 |
|
const struct in6_addr *max_address = ptr->u.ipv6.max; |
1894 |
|
ccs_print_ipv6(buf, sizeof(buf), min_address); |
1895 |
|
if (!ccs_io_printf(head, "%s", buf)) |
1896 |
|
return false; |
1897 |
|
if (min_address != max_address) { |
1898 |
|
ccs_print_ipv6(buf, sizeof(buf), max_address); |
1899 |
|
if (!ccs_io_printf(head, "-%s", buf)) |
1900 |
|
return false; |
1901 |
} |
} |
1902 |
list1_for_each_cookie(dpos, head->read_var1, &domain_list) { |
return true; |
1903 |
struct domain_info *domain; |
} |
1904 |
domain = list1_entry(dpos, struct domain_info, list); |
|
1905 |
if (head->read_step != 1) goto acl_loop; |
/** |
1906 |
if (domain->is_deleted) continue; |
* ccs_print_port_entry - Print port number of a network ACL entry. |
1907 |
if (io_printf(head, "%s\n" KEYWORD_USE_PROFILE "%u\n%s\n", domain->domainname->name, domain->profile, domain->quota_warned ? "quota_exceeded\n" : "")) return 0; |
* |
1908 |
head->read_step = 2; |
* @head: Pointer to "struct ccs_io_buffer". |
1909 |
acl_loop: ; |
* @ptr: Pointer to "struct ccs_ip_network_acl_record". |
1910 |
if (head->read_step == 3) goto tail_mark; |
* |
1911 |
list1_for_each_cookie(apos, head->read_var2, &domain->acl_info_list) { |
* Returns true on success, false otherwise. |
1912 |
struct acl_info *ptr; |
*/ |
1913 |
int pos; |
static bool ccs_print_port_entry(struct ccs_io_buffer *head, |
1914 |
u8 acl_type; |
struct ccs_ip_network_acl_record *ptr) |
1915 |
ptr = list1_entry(apos, struct acl_info, list); |
{ |
1916 |
if (ptr->is_deleted) continue; |
const u16 min_port = ptr->min_port; |
1917 |
pos = head->read_avail; |
const u16 max_port = ptr->max_port; |
1918 |
acl_type = ptr->type; |
if (!ccs_io_printf(head, " %u", min_port)) |
1919 |
if (acl_type == TYPE_FILE_ACL) { |
return false; |
1920 |
struct file_acl_record *ptr2 = container_of(ptr, struct file_acl_record, head); |
if (min_port != max_port && !ccs_io_printf(head, "-%u", max_port)) |
1921 |
const unsigned char b = ptr2->u_is_group; |
return false; |
1922 |
if (io_printf(head, "%d %s%s", ptr2->perm, |
return true; |
1923 |
b ? "@" : "", |
} |
1924 |
b ? ptr2->u.group->group_name->name : ptr2->u.filename->name)) goto print_acl_rollback; |
|
1925 |
} else if (acl_type == TYPE_ARGV0_ACL) { |
/** |
1926 |
struct argv0_acl_record *ptr2 = container_of(ptr, struct argv0_acl_record, head); |
* ccs_print_network_acl - Print a network ACL entry. |
1927 |
if (io_printf(head, KEYWORD_ALLOW_ARGV0 "%s %s", |
* |
1928 |
ptr2->filename->name, ptr2->argv0->name)) goto print_acl_rollback; |
* @head: Pointer to "struct ccs_io_buffer". |
1929 |
} else if (acl_type == TYPE_ENV_ACL) { |
* @ptr: Pointer to "struct ccs_ip_network_acl_record". |
1930 |
struct env_acl_record *ptr2 = container_of(ptr, struct env_acl_record, head); |
* @cond: Pointer to "struct ccs_condition". May be NULL. |
1931 |
if (io_printf(head, KEYWORD_ALLOW_ENV "%s", ptr2->env->name)) goto print_acl_rollback; |
* |
1932 |
} else if (acl_type == TYPE_CAPABILITY_ACL) { |
* Returns true on success, false otherwise. |
1933 |
struct capability_acl_record *ptr2 = container_of(ptr, struct capability_acl_record, head); |
*/ |
1934 |
if (io_printf(head, KEYWORD_ALLOW_CAPABILITY "%s", capability2keyword(ptr2->capability))) goto print_acl_rollback; |
static bool ccs_print_network_acl(struct ccs_io_buffer *head, |
1935 |
} else if (acl_type == TYPE_IP_NETWORK_ACL) { |
struct ccs_ip_network_acl_record *ptr, |
1936 |
struct ip_network_acl_record *ptr2 = container_of(ptr, struct ip_network_acl_record, head); |
const struct ccs_condition *cond) |
1937 |
if (io_printf(head, KEYWORD_ALLOW_NETWORK "%s ", network2keyword(ptr2->operation_type))) goto print_acl_rollback; |
{ |
1938 |
switch (ptr2->record_type) { |
int pos = head->read_avail; |
1939 |
case IP_RECORD_TYPE_ADDRESS_GROUP: |
if (!ccs_io_printf(head, KEYWORD_ALLOW_NETWORK "%s ", |
1940 |
if (io_printf(head, "@%s", ptr2->u.group->group_name->name)) goto print_acl_rollback; |
ccs_net2keyword(ptr->operation_type))) |
1941 |
break; |
goto out; |
1942 |
case IP_RECORD_TYPE_IPv4: |
switch (ptr->record_type) { |
1943 |
{ |
case IP_RECORD_TYPE_ADDRESS_GROUP: |
1944 |
const u32 min_address = ptr2->u.ipv4.min, max_address = ptr2->u.ipv4.max; |
if (!ccs_io_printf(head, "@%s", ptr->u.group->group_name->name)) |
1945 |
if (io_printf(head, "%u.%u.%u.%u", HIPQUAD(min_address))) goto print_acl_rollback; |
goto out; |
1946 |
if (min_address != max_address && io_printf(head, "-%u.%u.%u.%u", HIPQUAD(max_address))) goto print_acl_rollback; |
break; |
1947 |
} |
case IP_RECORD_TYPE_IPv4: |
1948 |
break; |
if (!ccs_print_ipv4_entry(head, ptr)) |
1949 |
case IP_RECORD_TYPE_IPv6: |
goto out; |
1950 |
{ |
break; |
1951 |
char buf[64]; |
case IP_RECORD_TYPE_IPv6: |
1952 |
const struct in6_addr *min_address = ptr2->u.ipv6.min, *max_address = ptr2->u.ipv6.max; |
if (!ccs_print_ipv6_entry(head, ptr)) |
1953 |
print_ipv6(buf, sizeof(buf), min_address); |
goto out; |
1954 |
if (io_printf(head, "%s", buf)) goto print_acl_rollback; |
break; |
1955 |
if (min_address != max_address) { |
} |
1956 |
print_ipv6(buf, sizeof(buf), max_address); |
if (!ccs_print_port_entry(head, ptr)) |
1957 |
if (io_printf(head, "-%s", buf)) goto print_acl_rollback; |
goto out; |
1958 |
} |
if (!ccs_print_condition(head, cond)) |
1959 |
} |
goto out; |
1960 |
break; |
return true; |
1961 |
} |
out: |
1962 |
{ |
head->read_avail = pos; |
1963 |
const u16 min_port = ptr2->min_port, max_port = ptr2->max_port; |
return false; |
1964 |
if (io_printf(head, " %u", min_port)) goto print_acl_rollback; |
} |
1965 |
if (min_port != max_port && io_printf(head, "-%u", max_port)) goto print_acl_rollback; |
|
1966 |
} |
/** |
1967 |
} else if (acl_type == TYPE_SIGNAL_ACL) { |
* ccs_print_signal_acl - Print a signal ACL entry. |
1968 |
struct signal_acl_record *ptr2 = container_of(ptr, struct signal_acl_record, head); |
* |
1969 |
if (io_printf(head, KEYWORD_ALLOW_SIGNAL "%u %s", ptr2->sig, ptr2->domainname->name)) goto print_acl_rollback; |
* @head: Pointer to "struct ccs_io_buffer". |
1970 |
} else { |
* @ptr: Pointer to "struct signale_acl_record". |
1971 |
const char *keyword = acltype2keyword(acl_type); |
* @cond: Pointer to "struct ccs_condition". May be NULL. |
1972 |
if (!keyword) continue; |
* |
1973 |
if (acltype2paths(acl_type) == 2) { |
* Returns true on success, false otherwise. |
1974 |
struct double_acl_record *ptr2 = container_of(ptr, struct double_acl_record, head); |
*/ |
1975 |
const bool b0 = ptr2->u1_is_group, b1 = ptr2->u2_is_group; |
static bool ccs_print_signal_acl(struct ccs_io_buffer *head, |
1976 |
if (io_printf(head, "allow_%s %s%s %s%s", keyword, |
struct ccs_signal_acl_record *ptr, |
1977 |
b0 ? "@" : "", b0 ? ptr2->u1.group1->group_name->name : ptr2->u1.filename1->name, |
const struct ccs_condition *cond) |
1978 |
b1 ? "@" : "", b1 ? ptr2->u2.group2->group_name->name : ptr2->u2.filename2->name)) goto print_acl_rollback; |
{ |
1979 |
} else { |
int pos = head->read_avail; |
1980 |
struct single_acl_record *ptr2 = container_of(ptr, struct single_acl_record, head); |
if (!ccs_io_printf(head, KEYWORD_ALLOW_SIGNAL "%u %s", |
1981 |
const bool b = ptr2->u_is_group; |
ptr->sig, ptr->domainname->name)) |
1982 |
if (io_printf(head, "allow_%s %s%s", keyword, |
goto out; |
1983 |
b ? "@" : "", b ? ptr2->u.group->group_name->name : ptr2->u.filename->name)) goto print_acl_rollback; |
if (!ccs_print_condition(head, cond)) |
1984 |
} |
goto out; |
1985 |
} |
return true; |
1986 |
if (DumpCondition(head, ptr->cond)) { |
out: |
1987 |
print_acl_rollback: ; |
head->read_avail = pos; |
1988 |
head->read_avail = pos; |
return false; |
1989 |
|
} |
1990 |
|
|
1991 |
|
/** |
1992 |
|
* ccs_print_execute_handler_record - Print an execute handler ACL entry. |
1993 |
|
* |
1994 |
|
* @head: Pointer to "struct ccs_io_buffer". |
1995 |
|
* @keyword: Name of the keyword. |
1996 |
|
* @ptr: Pointer to "struct ccs_execute_handler_record". |
1997 |
|
* |
1998 |
|
* Returns true on success, false otherwise. |
1999 |
|
*/ |
2000 |
|
static bool ccs_print_execute_handler_record(struct ccs_io_buffer *head, |
2001 |
|
const char *keyword, |
2002 |
|
struct ccs_execute_handler_record * |
2003 |
|
ptr) |
2004 |
|
{ |
2005 |
|
return ccs_io_printf(head, "%s %s\n", keyword, ptr->handler->name); |
2006 |
|
} |
2007 |
|
|
2008 |
|
/** |
2009 |
|
* ccs_print_mount_acl - Print a mount ACL entry. |
2010 |
|
* |
2011 |
|
* @head: Pointer to "struct ccs_io_buffer". |
2012 |
|
* @ptr: Pointer to "struct ccs_mount_acl_record". |
2013 |
|
* @cond: Pointer to "struct ccs_condition". May be NULL. |
2014 |
|
* |
2015 |
|
* Returns true on success, false otherwise. |
2016 |
|
*/ |
2017 |
|
static bool ccs_print_mount_acl(struct ccs_io_buffer *head, |
2018 |
|
struct ccs_mount_acl_record *ptr, |
2019 |
|
const struct ccs_condition *cond) |
2020 |
|
{ |
2021 |
|
int pos = head->read_avail; |
2022 |
|
if (!ccs_io_printf(head, KEYWORD_ALLOW_MOUNT "%s %s %s 0x%lX\n", |
2023 |
|
ptr->dev_name->name, ptr->dir_name->name, |
2024 |
|
ptr->fs_type->name, ptr->flags)) |
2025 |
|
goto out; |
2026 |
|
if (!ccs_print_condition(head, cond)) |
2027 |
|
goto out; |
2028 |
|
return true; |
2029 |
|
out: |
2030 |
|
head->read_avail = pos; |
2031 |
|
return false; |
2032 |
|
} |
2033 |
|
|
2034 |
|
/** |
2035 |
|
* ccs_print_umount_acl - Print a mount ACL entry. |
2036 |
|
* |
2037 |
|
* @head: Pointer to "struct ccs_io_buffer". |
2038 |
|
* @ptr: Pointer to "struct ccs_umount_acl_record". |
2039 |
|
* @cond: Pointer to "struct ccs_condition". May be NULL. |
2040 |
|
* |
2041 |
|
* Returns true on success, false otherwise. |
2042 |
|
*/ |
2043 |
|
static bool ccs_print_umount_acl(struct ccs_io_buffer *head, |
2044 |
|
struct ccs_umount_acl_record *ptr, |
2045 |
|
const struct ccs_condition *cond) |
2046 |
|
{ |
2047 |
|
int pos = head->read_avail; |
2048 |
|
if (!ccs_io_printf(head, KEYWORD_ALLOW_UNMOUNT "%s\n", |
2049 |
|
ptr->dir->name)) |
2050 |
|
goto out; |
2051 |
|
if (!ccs_print_condition(head, cond)) |
2052 |
|
goto out; |
2053 |
|
return true; |
2054 |
|
out: |
2055 |
|
head->read_avail = pos; |
2056 |
|
return false; |
2057 |
|
} |
2058 |
|
|
2059 |
|
/** |
2060 |
|
* ccs_print_chroot_acl - Print a chroot ACL entry. |
2061 |
|
* |
2062 |
|
* @head: Pointer to "struct ccs_io_buffer". |
2063 |
|
* @ptr: Pointer to "struct ccs_chroot_acl_record". |
2064 |
|
* @cond: Pointer to "struct ccs_condition". May be NULL. |
2065 |
|
* |
2066 |
|
* Returns true on success, false otherwise. |
2067 |
|
*/ |
2068 |
|
static bool ccs_print_chroot_acl(struct ccs_io_buffer *head, |
2069 |
|
struct ccs_chroot_acl_record *ptr, |
2070 |
|
const struct ccs_condition *cond) |
2071 |
|
{ |
2072 |
|
int pos = head->read_avail; |
2073 |
|
if (!ccs_io_printf(head, KEYWORD_ALLOW_CHROOT "%s\n", |
2074 |
|
ptr->dir->name)) |
2075 |
|
goto out; |
2076 |
|
if (!ccs_print_condition(head, cond)) |
2077 |
|
goto out; |
2078 |
|
return true; |
2079 |
|
out: |
2080 |
|
head->read_avail = pos; |
2081 |
|
return false; |
2082 |
|
} |
2083 |
|
|
2084 |
|
/** |
2085 |
|
* ccs_print_pivot_root_acl - Print a pivot_root ACL entry. |
2086 |
|
* |
2087 |
|
* @head: Pointer to "struct ccs_io_buffer". |
2088 |
|
* @ptr: Pointer to "struct ccs_pivot_root_acl_record". |
2089 |
|
* @cond: Pointer to "struct ccs_condition". May be NULL. |
2090 |
|
* |
2091 |
|
* Returns true on success, false otherwise. |
2092 |
|
*/ |
2093 |
|
static bool ccs_print_pivot_root_acl(struct ccs_io_buffer *head, |
2094 |
|
struct ccs_pivot_root_acl_record *ptr, |
2095 |
|
const struct ccs_condition *cond) |
2096 |
|
{ |
2097 |
|
int pos = head->read_avail; |
2098 |
|
if (!ccs_io_printf(head, KEYWORD_ALLOW_PIVOT_ROOT "%s %s\n", |
2099 |
|
ptr->new_root->name, ptr->old_root->name)) |
2100 |
|
goto out; |
2101 |
|
if (!ccs_print_condition(head, cond)) |
2102 |
|
goto out; |
2103 |
|
return true; |
2104 |
|
out: |
2105 |
|
head->read_avail = pos; |
2106 |
|
return false; |
2107 |
|
} |
2108 |
|
|
2109 |
|
/** |
2110 |
|
* ccs_print_entry - Print an ACL entry. |
2111 |
|
* |
2112 |
|
* @head: Pointer to "struct ccs_io_buffer". |
2113 |
|
* @ptr: Pointer to an ACL entry. |
2114 |
|
* |
2115 |
|
* Returns true on success, false otherwise. |
2116 |
|
*/ |
2117 |
|
static bool ccs_print_entry(struct ccs_io_buffer *head, |
2118 |
|
struct ccs_acl_info *ptr) |
2119 |
|
{ |
2120 |
|
const struct ccs_condition *cond = ptr->cond; |
2121 |
|
const u8 acl_type = ccs_acl_type2(ptr); |
2122 |
|
if (acl_type & ACL_DELETED) |
2123 |
|
return true; |
2124 |
|
if (acl_type == TYPE_SINGLE_PATH_ACL) { |
2125 |
|
struct ccs_single_path_acl_record *acl |
2126 |
|
= container_of(ptr, struct ccs_single_path_acl_record, |
2127 |
|
head); |
2128 |
|
return ccs_print_single_path_acl(head, acl, cond); |
2129 |
|
} |
2130 |
|
if (acl_type == TYPE_EXECUTE_HANDLER) { |
2131 |
|
struct ccs_execute_handler_record *acl |
2132 |
|
= container_of(ptr, struct ccs_execute_handler_record, |
2133 |
|
head); |
2134 |
|
const char *keyword = KEYWORD_EXECUTE_HANDLER; |
2135 |
|
return ccs_print_execute_handler_record(head, keyword, acl); |
2136 |
|
} |
2137 |
|
if (acl_type == TYPE_DENIED_EXECUTE_HANDLER) { |
2138 |
|
struct ccs_execute_handler_record *acl |
2139 |
|
= container_of(ptr, struct ccs_execute_handler_record, |
2140 |
|
head); |
2141 |
|
const char *keyword = KEYWORD_DENIED_EXECUTE_HANDLER; |
2142 |
|
return ccs_print_execute_handler_record(head, keyword, acl); |
2143 |
|
} |
2144 |
|
if (head->read_execute_only) |
2145 |
|
return true; |
2146 |
|
if (acl_type == TYPE_MKDEV_ACL) { |
2147 |
|
struct ccs_mkdev_acl_record *acl |
2148 |
|
= container_of(ptr, struct ccs_mkdev_acl_record, head); |
2149 |
|
return ccs_print_mkdev_acl(head, acl, cond); |
2150 |
|
} |
2151 |
|
if (acl_type == TYPE_DOUBLE_PATH_ACL) { |
2152 |
|
struct ccs_double_path_acl_record *acl |
2153 |
|
= container_of(ptr, struct ccs_double_path_acl_record, |
2154 |
|
head); |
2155 |
|
return ccs_print_double_path_acl(head, acl, cond); |
2156 |
|
} |
2157 |
|
if (acl_type == TYPE_IOCTL_ACL) { |
2158 |
|
struct ccs_ioctl_acl_record *acl |
2159 |
|
= container_of(ptr, struct ccs_ioctl_acl_record, head); |
2160 |
|
return ccs_print_ioctl_acl(head, acl, cond); |
2161 |
|
} |
2162 |
|
if (acl_type == TYPE_ARGV0_ACL) { |
2163 |
|
struct ccs_argv0_acl_record *acl |
2164 |
|
= container_of(ptr, struct ccs_argv0_acl_record, head); |
2165 |
|
return ccs_print_argv0_acl(head, acl, cond); |
2166 |
|
} |
2167 |
|
if (acl_type == TYPE_ENV_ACL) { |
2168 |
|
struct ccs_env_acl_record *acl |
2169 |
|
= container_of(ptr, struct ccs_env_acl_record, head); |
2170 |
|
return ccs_print_env_acl(head, acl, cond); |
2171 |
|
} |
2172 |
|
if (acl_type == TYPE_CAPABILITY_ACL) { |
2173 |
|
struct ccs_capability_acl_record *acl |
2174 |
|
= container_of(ptr, struct ccs_capability_acl_record, |
2175 |
|
head); |
2176 |
|
return ccs_print_capability_acl(head, acl, cond); |
2177 |
|
} |
2178 |
|
if (acl_type == TYPE_IP_NETWORK_ACL) { |
2179 |
|
struct ccs_ip_network_acl_record *acl |
2180 |
|
= container_of(ptr, struct ccs_ip_network_acl_record, |
2181 |
|
head); |
2182 |
|
return ccs_print_network_acl(head, acl, cond); |
2183 |
|
} |
2184 |
|
if (acl_type == TYPE_SIGNAL_ACL) { |
2185 |
|
struct ccs_signal_acl_record *acl |
2186 |
|
= container_of(ptr, struct ccs_signal_acl_record, head); |
2187 |
|
return ccs_print_signal_acl(head, acl, cond); |
2188 |
|
} |
2189 |
|
if (acl_type == TYPE_MOUNT_ACL) { |
2190 |
|
struct ccs_mount_acl_record *acl |
2191 |
|
= container_of(ptr, struct ccs_mount_acl_record, head); |
2192 |
|
return ccs_print_mount_acl(head, acl, cond); |
2193 |
|
} |
2194 |
|
if (acl_type == TYPE_UMOUNT_ACL) { |
2195 |
|
struct ccs_umount_acl_record *acl |
2196 |
|
= container_of(ptr, struct ccs_umount_acl_record, head); |
2197 |
|
return ccs_print_umount_acl(head, acl, cond); |
2198 |
|
} |
2199 |
|
if (acl_type == TYPE_CHROOT_ACL) { |
2200 |
|
struct ccs_chroot_acl_record *acl |
2201 |
|
= container_of(ptr, struct ccs_chroot_acl_record, head); |
2202 |
|
return ccs_print_chroot_acl(head, acl, cond); |
2203 |
|
} |
2204 |
|
if (acl_type == TYPE_PIVOT_ROOT_ACL) { |
2205 |
|
struct ccs_pivot_root_acl_record *acl |
2206 |
|
= container_of(ptr, struct ccs_pivot_root_acl_record, |
2207 |
|
head); |
2208 |
|
return ccs_print_pivot_root_acl(head, acl, cond); |
2209 |
|
} |
2210 |
|
/* Workaround for gcc 3.2.2's inline bug. */ |
2211 |
|
if (acl_type & ACL_DELETED) |
2212 |
|
return true; |
2213 |
|
BUG(); /* This must not happen. */ |
2214 |
|
return false; |
2215 |
|
} |
2216 |
|
|
2217 |
|
/** |
2218 |
|
* ccs_read_domain_policy - Read domain policy. |
2219 |
|
* |
2220 |
|
* @head: Pointer to "struct ccs_io_buffer". |
2221 |
|
* |
2222 |
|
* Returns 0. |
2223 |
|
* |
2224 |
|
* Caller holds srcu_read_lock(&ccs_ss). |
2225 |
|
*/ |
2226 |
|
static int ccs_read_domain_policy(struct ccs_io_buffer *head) |
2227 |
|
{ |
2228 |
|
struct list_head *dpos; |
2229 |
|
struct list_head *apos; |
2230 |
|
if (head->read_eof) |
2231 |
|
return 0; |
2232 |
|
if (head->read_step == 0) |
2233 |
|
head->read_step = 1; |
2234 |
|
list_for_each_cookie(dpos, head->read_var1, &ccs_domain_list) { |
2235 |
|
struct ccs_domain_info *domain; |
2236 |
|
const char *quota_exceeded = ""; |
2237 |
|
const char *transition_failed = ""; |
2238 |
|
const char *ignore_global_allow_read = ""; |
2239 |
|
const char *ignore_global_allow_env = ""; |
2240 |
|
domain = list_entry(dpos, struct ccs_domain_info, list); |
2241 |
|
if (head->read_step != 1) |
2242 |
|
goto acl_loop; |
2243 |
|
if (domain->is_deleted && !head->read_single_domain) |
2244 |
|
continue; |
2245 |
|
/* Print domainname and flags. */ |
2246 |
|
if (domain->quota_warned) |
2247 |
|
quota_exceeded = "quota_exceeded\n"; |
2248 |
|
if (domain->domain_transition_failed) |
2249 |
|
transition_failed = "transition_failed\n"; |
2250 |
|
if (domain->ignore_global_allow_read) |
2251 |
|
ignore_global_allow_read |
2252 |
|
= KEYWORD_IGNORE_GLOBAL_ALLOW_READ "\n"; |
2253 |
|
if (domain->ignore_global_allow_env) |
2254 |
|
ignore_global_allow_env |
2255 |
|
= KEYWORD_IGNORE_GLOBAL_ALLOW_ENV "\n"; |
2256 |
|
if (!ccs_io_printf(head, "%s\n" KEYWORD_USE_PROFILE "%u\n" |
2257 |
|
"%s%s%s%s\n", domain->domainname->name, |
2258 |
|
domain->profile, quota_exceeded, |
2259 |
|
transition_failed, |
2260 |
|
ignore_global_allow_read, |
2261 |
|
ignore_global_allow_env)) |
2262 |
return 0; |
return 0; |
2263 |
} |
head->read_step = 2; |
2264 |
|
acl_loop: |
2265 |
|
if (head->read_step == 3) |
2266 |
|
goto tail_mark; |
2267 |
|
/* Print ACL entries in the domain. */ |
2268 |
|
list_for_each_cookie(apos, head->read_var2, |
2269 |
|
&domain->acl_info_list) { |
2270 |
|
struct ccs_acl_info *ptr |
2271 |
|
= list_entry(apos, struct ccs_acl_info, list); |
2272 |
|
if (!ccs_print_entry(head, ptr)) |
2273 |
|
return 0; |
2274 |
} |
} |
2275 |
head->read_step = 3; |
head->read_step = 3; |
2276 |
tail_mark: ; |
tail_mark: |
2277 |
if (io_printf(head, "\n")) return 0; |
if (!ccs_io_printf(head, "\n")) |
2278 |
|
return 0; |
2279 |
head->read_step = 1; |
head->read_step = 1; |
2280 |
|
if (head->read_single_domain) |
2281 |
|
break; |
2282 |
} |
} |
2283 |
head->read_eof = 1; |
head->read_eof = true; |
2284 |
return 0; |
return 0; |
2285 |
} |
} |
2286 |
|
|
2287 |
#endif |
/** |
2288 |
|
* ccs_write_domain_profile - Assign profile for specified domain. |
2289 |
static int UpdateDomainProfile(struct io_buffer *head) |
* |
2290 |
|
* @head: Pointer to "struct ccs_io_buffer". |
2291 |
|
* |
2292 |
|
* Returns 0 on success, -EINVAL otherwise. |
2293 |
|
* |
2294 |
|
* This is equivalent to doing |
2295 |
|
* |
2296 |
|
* ( echo "select " $domainname; echo "use_profile " $profile ) | |
2297 |
|
* /usr/lib/ccs/loadpolicy -d |
2298 |
|
* |
2299 |
|
* Caller holds srcu_read_lock(&ccs_ss). |
2300 |
|
*/ |
2301 |
|
static int ccs_write_domain_profile(struct ccs_io_buffer *head) |
2302 |
{ |
{ |
2303 |
char *data = head->write_buf; |
char *data = head->write_buf; |
2304 |
char *cp = strchr(data, ' '); |
char *cp = strchr(data, ' '); |
2305 |
struct domain_info *domain; |
struct ccs_domain_info *domain; |
2306 |
unsigned int profile; |
unsigned int profile; |
2307 |
if (!isRoot()) return -EPERM; |
if (!cp) |
2308 |
if (!cp) return -EINVAL; |
return -EINVAL; |
2309 |
*cp = '\0'; |
*cp = '\0'; |
|
domain = FindDomain(cp + 1); |
|
2310 |
profile = simple_strtoul(data, NULL, 10); |
profile = simple_strtoul(data, NULL, 10); |
2311 |
if (domain && profile < MAX_PROFILES && (profile_ptr[profile] || !sbin_init_started)) domain->profile = (u8) profile; |
if (profile >= MAX_PROFILES) |
2312 |
UpdateCounter(CCS_UPDATES_COUNTER_DOMAIN_POLICY); |
return -EINVAL; |
2313 |
|
domain = ccs_find_domain(cp + 1); |
2314 |
|
if (domain && (ccs_profile_ptr[profile] || !ccs_policy_loaded)) |
2315 |
|
domain->profile = (u8) profile; |
2316 |
return 0; |
return 0; |
2317 |
} |
} |
2318 |
|
|
2319 |
static int ReadDomainProfile(struct io_buffer *head) |
/** |
2320 |
|
* ccs_read_domain_profile - Read only domainname and profile. |
2321 |
|
* |
2322 |
|
* @head: Pointer to "struct ccs_io_buffer". |
2323 |
|
* |
2324 |
|
* Returns list of profile number and domainname pairs. |
2325 |
|
* |
2326 |
|
* This is equivalent to doing |
2327 |
|
* |
2328 |
|
* grep -A 1 '^<kernel>' /proc/ccs/domain_policy | |
2329 |
|
* awk ' { if ( domainname == "" ) { if ( $1 == "<kernel>" ) |
2330 |
|
* domainname = $0; } else if ( $1 == "use_profile" ) { |
2331 |
|
* print $2 " " domainname; domainname = ""; } } ; ' |
2332 |
|
* |
2333 |
|
* Caller holds srcu_read_lock(&ccs_ss). |
2334 |
|
*/ |
2335 |
|
static int ccs_read_domain_profile(struct ccs_io_buffer *head) |
2336 |
{ |
{ |
2337 |
struct list1_head *pos; |
struct list_head *pos; |
2338 |
if (head->read_eof) return 0; |
if (head->read_eof) |
2339 |
if (!isRoot()) return -EPERM; |
return 0; |
2340 |
list1_for_each_cookie(pos, head->read_var1, &domain_list) { |
list_for_each_cookie(pos, head->read_var1, &ccs_domain_list) { |
2341 |
struct domain_info *domain; |
struct ccs_domain_info *domain; |
2342 |
domain = list1_entry(pos, struct domain_info, list); |
domain = list_entry(pos, struct ccs_domain_info, list); |
2343 |
if (domain->is_deleted) continue; |
if (domain->is_deleted) |
2344 |
if (io_printf(head, "%u %s\n", domain->profile, domain->domainname->name)) return 0; |
continue; |
2345 |
|
if (!ccs_io_printf(head, "%u %s\n", domain->profile, |
2346 |
|
domain->domainname->name)) |
2347 |
|
return 0; |
2348 |
} |
} |
2349 |
head->read_eof = 1; |
head->read_eof = true; |
2350 |
return 0; |
return 0; |
2351 |
} |
} |
2352 |
|
|
2353 |
static int WritePID(struct io_buffer *head) |
/** |
2354 |
|
* ccs_write_pid: Specify PID to obtain domainname. |
2355 |
|
* |
2356 |
|
* @head: Pointer to "struct ccs_io_buffer". |
2357 |
|
* |
2358 |
|
* Returns 0. |
2359 |
|
*/ |
2360 |
|
static int ccs_write_pid(struct ccs_io_buffer *head) |
2361 |
{ |
{ |
2362 |
head->read_step = (int) simple_strtoul(head->write_buf, NULL, 10); |
head->read_eof = false; |
|
head->read_eof = 0; |
|
2363 |
return 0; |
return 0; |
2364 |
} |
} |
2365 |
|
|
2366 |
static int ReadPID(struct io_buffer *head) |
/** |
2367 |
|
* ccs_read_pid - Read information of a process. |
2368 |
|
* |
2369 |
|
* @head: Pointer to "struct ccs_io_buffer". |
2370 |
|
* |
2371 |
|
* Returns the domainname which the specified PID is in or |
2372 |
|
* process information of the specified PID on success, |
2373 |
|
* empty string otherwise. |
2374 |
|
* |
2375 |
|
* Caller holds srcu_read_lock(&ccs_ss). |
2376 |
|
*/ |
2377 |
|
static int ccs_read_pid(struct ccs_io_buffer *head) |
2378 |
{ |
{ |
2379 |
if (head->read_avail == 0 && !head->read_eof) { |
char *buf = head->write_buf; |
2380 |
const int pid = head->read_step; |
bool task_info = false; |
2381 |
struct task_struct *p; |
unsigned int pid; |
2382 |
struct domain_info *domain = NULL; |
struct task_struct *p; |
2383 |
/***** CRITICAL SECTION START *****/ |
struct ccs_domain_info *domain = NULL; |
2384 |
read_lock(&tasklist_lock); |
u32 ccs_flags = 0; |
2385 |
p = find_task_by_pid(pid); |
/* Accessing write_buf is safe because head->io_sem is held. */ |
2386 |
if (p) domain = p->domain_info; |
if (!buf) |
2387 |
read_unlock(&tasklist_lock); |
goto done; /* Do nothing if open(O_RDONLY). */ |
2388 |
/***** CRITICAL SECTION END *****/ |
if (head->read_avail || head->read_eof) |
2389 |
if (domain) io_printf(head, "%d %u %s", pid, domain->profile, domain->domainname->name); |
goto done; |
2390 |
head->read_eof = 1; |
head->read_eof = true; |
2391 |
|
if (ccs_str_starts(&buf, "info ")) |
2392 |
|
task_info = true; |
2393 |
|
pid = (unsigned int) simple_strtoul(buf, NULL, 10); |
2394 |
|
/***** CRITICAL SECTION START *****/ |
2395 |
|
read_lock(&tasklist_lock); |
2396 |
|
p = find_task_by_pid(pid); |
2397 |
|
if (p) { |
2398 |
|
domain = ccs_task_domain(p); |
2399 |
|
ccs_flags = p->ccs_flags; |
2400 |
} |
} |
2401 |
|
read_unlock(&tasklist_lock); |
2402 |
|
/***** CRITICAL SECTION END *****/ |
2403 |
|
if (!domain) |
2404 |
|
goto done; |
2405 |
|
if (!task_info) |
2406 |
|
ccs_io_printf(head, "%u %u %s", pid, domain->profile, |
2407 |
|
domain->domainname->name); |
2408 |
|
else |
2409 |
|
ccs_io_printf(head, "%u manager=%s execute_handler=%s " |
2410 |
|
"state[0]=%u state[1]=%u state[2]=%u", pid, |
2411 |
|
ccs_flags & CCS_TASK_IS_POLICY_MANAGER ? |
2412 |
|
"yes" : "no", |
2413 |
|
ccs_flags & CCS_TASK_IS_EXECUTE_HANDLER ? |
2414 |
|
"yes" : "no", |
2415 |
|
(u8) (ccs_flags >> 24), |
2416 |
|
(u8) (ccs_flags >> 16), |
2417 |
|
(u8) (ccs_flags >> 8)); |
2418 |
|
done: |
2419 |
return 0; |
return 0; |
2420 |
} |
} |
2421 |
|
|
2422 |
/************************* EXCEPTION POLICY HANDLER *************************/ |
/** |
2423 |
|
* ccs_write_exception_policy - Write exception policy. |
2424 |
#ifdef CONFIG_TOMOYO |
* |
2425 |
|
* @head: Pointer to "struct ccs_io_buffer". |
2426 |
static int AddExceptionPolicy(struct io_buffer *head) |
* |
2427 |
|
* Returns 0 on success, negative value otherwise. |
2428 |
|
*/ |
2429 |
|
static int ccs_write_exception_policy(struct ccs_io_buffer *head) |
2430 |
{ |
{ |
2431 |
char *data = head->write_buf; |
char *data = head->write_buf; |
2432 |
bool is_delete = 0; |
bool is_delete = ccs_str_starts(&data, KEYWORD_DELETE); |
2433 |
if (!isRoot()) return -EPERM; |
if (ccs_str_starts(&data, KEYWORD_KEEP_DOMAIN)) |
2434 |
UpdateCounter(CCS_UPDATES_COUNTER_EXCEPTION_POLICY); |
return ccs_write_domain_keeper_policy(data, false, is_delete); |
2435 |
if (strncmp(data, KEYWORD_DELETE, KEYWORD_DELETE_LEN) == 0) { |
if (ccs_str_starts(&data, KEYWORD_NO_KEEP_DOMAIN)) |
2436 |
data += KEYWORD_DELETE_LEN; |
return ccs_write_domain_keeper_policy(data, true, is_delete); |
2437 |
is_delete = 1; |
if (ccs_str_starts(&data, KEYWORD_INITIALIZE_DOMAIN)) |
2438 |
} |
return ccs_write_domain_initializer_policy(data, false, |
2439 |
if (strncmp(data, KEYWORD_KEEP_DOMAIN, KEYWORD_KEEP_DOMAIN_LEN) == 0) { |
is_delete); |
2440 |
return AddDomainKeeperPolicy(data + KEYWORD_KEEP_DOMAIN_LEN, 0, is_delete); |
if (ccs_str_starts(&data, KEYWORD_NO_INITIALIZE_DOMAIN)) |
2441 |
} else if (strncmp(data, KEYWORD_NO_KEEP_DOMAIN, KEYWORD_NO_KEEP_DOMAIN_LEN) == 0) { |
return ccs_write_domain_initializer_policy(data, true, |
2442 |
return AddDomainKeeperPolicy(data + KEYWORD_NO_KEEP_DOMAIN_LEN, 1, is_delete); |
is_delete); |
2443 |
} else if (strncmp(data, KEYWORD_INITIALIZE_DOMAIN, KEYWORD_INITIALIZE_DOMAIN_LEN) == 0) { |
if (ccs_str_starts(&data, KEYWORD_AGGREGATOR)) |
2444 |
return AddDomainInitializerPolicy(data + KEYWORD_INITIALIZE_DOMAIN_LEN, 0, is_delete); |
return ccs_write_aggregator_policy(data, is_delete); |
2445 |
} else if (strncmp(data, KEYWORD_NO_INITIALIZE_DOMAIN, KEYWORD_NO_INITIALIZE_DOMAIN_LEN) == 0) { |
if (ccs_str_starts(&data, KEYWORD_ALLOW_READ)) |
2446 |
return AddDomainInitializerPolicy(data + KEYWORD_NO_INITIALIZE_DOMAIN_LEN, 1, is_delete); |
return ccs_write_globally_readable_policy(data, is_delete); |
2447 |
} else if (strncmp(data, KEYWORD_ALIAS, KEYWORD_ALIAS_LEN) == 0) { |
if (ccs_str_starts(&data, KEYWORD_ALLOW_ENV)) |
2448 |
return AddAliasPolicy(data + KEYWORD_ALIAS_LEN, is_delete); |
return ccs_write_globally_usable_env_policy(data, is_delete); |
2449 |
} else if (strncmp(data, KEYWORD_AGGREGATOR, KEYWORD_AGGREGATOR_LEN) == 0) { |
if (ccs_str_starts(&data, KEYWORD_FILE_PATTERN)) |
2450 |
return AddAggregatorPolicy(data + KEYWORD_AGGREGATOR_LEN, is_delete); |
return ccs_write_pattern_policy(data, is_delete); |
2451 |
} else if (strncmp(data, KEYWORD_ALLOW_READ, KEYWORD_ALLOW_READ_LEN) == 0) { |
if (ccs_str_starts(&data, KEYWORD_PATH_GROUP)) |
2452 |
return AddGloballyReadablePolicy(data + KEYWORD_ALLOW_READ_LEN, is_delete); |
return ccs_write_path_group_policy(data, is_delete); |
2453 |
} else if (strncmp(data, KEYWORD_ALLOW_ENV, KEYWORD_ALLOW_ENV_LEN) == 0) { |
if (ccs_str_starts(&data, KEYWORD_DENY_REWRITE)) |
2454 |
return AddGloballyUsableEnvPolicy(data + KEYWORD_ALLOW_ENV_LEN, is_delete); |
return ccs_write_no_rewrite_policy(data, is_delete); |
2455 |
} else if (strncmp(data, KEYWORD_FILE_PATTERN, KEYWORD_FILE_PATTERN_LEN) == 0) { |
if (ccs_str_starts(&data, KEYWORD_ADDRESS_GROUP)) |
2456 |
return AddPatternPolicy(data + KEYWORD_FILE_PATTERN_LEN, is_delete); |
return ccs_write_address_group_policy(data, is_delete); |
2457 |
} else if (strncmp(data, KEYWORD_PATH_GROUP, KEYWORD_PATH_GROUP_LEN) == 0) { |
if (ccs_str_starts(&data, KEYWORD_DENY_AUTOBIND)) |
2458 |
return AddPathGroupPolicy(data + KEYWORD_PATH_GROUP_LEN, is_delete); |
return ccs_write_reserved_port_policy(data, is_delete); |
|
} else if (strncmp(data, KEYWORD_DENY_REWRITE, KEYWORD_DENY_REWRITE_LEN) == 0) { |
|
|
return AddNoRewritePolicy(data + KEYWORD_DENY_REWRITE_LEN, is_delete); |
|
|
} else if (strncmp(data, KEYWORD_ADDRESS_GROUP, KEYWORD_ADDRESS_GROUP_LEN) == 0) { |
|
|
return AddAddressGroupPolicy(data + KEYWORD_ADDRESS_GROUP_LEN, is_delete); |
|
|
} |
|
2459 |
return -EINVAL; |
return -EINVAL; |
2460 |
} |
} |
2461 |
|
|
2462 |
static int ReadExceptionPolicy(struct io_buffer *head) |
/** |
2463 |
|
* ccs_read_exception_policy - Read exception policy. |
2464 |
|
* |
2465 |
|
* @head: Pointer to "struct ccs_io_buffer". |
2466 |
|
* |
2467 |
|
* Returns 0 on success, -EINVAL otherwise. |
2468 |
|
* |
2469 |
|
* Caller holds srcu_read_lock(&ccs_ss). |
2470 |
|
*/ |
2471 |
|
static int ccs_read_exception_policy(struct ccs_io_buffer *head) |
2472 |
{ |
{ |
2473 |
if (!head->read_eof) { |
if (!head->read_eof) { |
2474 |
switch (head->read_step) { |
switch (head->read_step) { |
2475 |
case 0: |
case 0: |
2476 |
if (!isRoot()) return -EPERM; |
head->read_var2 = NULL; |
2477 |
head->read_var2 = NULL; head->read_step = 1; |
head->read_step = 1; |
2478 |
case 1: |
case 1: |
2479 |
if (ReadDomainKeeperPolicy(head)) break; |
if (!ccs_read_domain_keeper_policy(head)) |
2480 |
head->read_var2 = NULL; head->read_step = 2; |
break; |
2481 |
|
head->read_var2 = NULL; |
2482 |
|
head->read_step = 2; |
2483 |
case 2: |
case 2: |
2484 |
if (ReadGloballyReadablePolicy(head)) break; |
if (!ccs_read_globally_readable_policy(head)) |
2485 |
head->read_var2 = NULL; head->read_step = 3; |
break; |
2486 |
|
head->read_var2 = NULL; |
2487 |
|
head->read_step = 3; |
2488 |
case 3: |
case 3: |
2489 |
if (ReadGloballyUsableEnvPolicy(head)) break; |
if (!ccs_read_globally_usable_env_policy(head)) |
2490 |
head->read_var2 = NULL; head->read_step = 4; |
break; |
2491 |
|
head->read_var2 = NULL; |
2492 |
|
head->read_step = 4; |
2493 |
case 4: |
case 4: |
2494 |
if (ReadDomainInitializerPolicy(head)) break; |
if (!ccs_read_domain_initializer_policy(head)) |
2495 |
head->read_var2 = NULL; head->read_step = 5; |
break; |
2496 |
case 5: |
head->read_var2 = NULL; |
2497 |
if (ReadAliasPolicy(head)) break; |
head->read_step = 6; |
|
head->read_var2 = NULL; head->read_step = 6; |
|
2498 |
case 6: |
case 6: |
2499 |
if (ReadAggregatorPolicy(head)) break; |
if (!ccs_read_aggregator_policy(head)) |
2500 |
head->read_var2 = NULL; head->read_step = 7; |
break; |
2501 |
|
head->read_var2 = NULL; |
2502 |
|
head->read_step = 7; |
2503 |
case 7: |
case 7: |
2504 |
if (ReadPatternPolicy(head)) break; |
if (!ccs_read_file_pattern(head)) |
2505 |
head->read_var2 = NULL; head->read_step = 8; |
break; |
2506 |
|
head->read_var2 = NULL; |
2507 |
|
head->read_step = 8; |
2508 |
case 8: |
case 8: |
2509 |
if (ReadNoRewritePolicy(head)) break; |
if (!ccs_read_no_rewrite_policy(head)) |
2510 |
head->read_var2 = NULL; head->read_step = 9; |
break; |
2511 |
|
head->read_var2 = NULL; |
2512 |
|
head->read_step = 9; |
2513 |
case 9: |
case 9: |
2514 |
if (ReadPathGroupPolicy(head)) break; |
if (!ccs_read_path_group_policy(head)) |
2515 |
head->read_var1 = head->read_var2 = NULL; head->read_step = 10; |
break; |
2516 |
|
head->read_var1 = NULL; |
2517 |
|
head->read_var2 = NULL; |
2518 |
|
head->read_step = 10; |
2519 |
case 10: |
case 10: |
2520 |
if (ReadAddressGroupPolicy(head)) break; |
if (!ccs_read_address_group_policy(head)) |
2521 |
head->read_eof = 1; |
break; |
2522 |
|
head->read_var2 = NULL; |
2523 |
|
head->read_step = 11; |
2524 |
|
case 11: |
2525 |
|
if (!ccs_read_reserved_port_policy(head)) |
2526 |
|
break; |
2527 |
|
head->read_eof = true; |
2528 |
break; |
break; |
2529 |
default: |
default: |
2530 |
return -EINVAL; |
return -EINVAL; |
2533 |
return 0; |
return 0; |
2534 |
} |
} |
2535 |
|
|
2536 |
#endif |
/* Path to the policy loader. The default is /sbin/ccs-init. */ |
2537 |
|
static const char *ccs_loader; |
2538 |
|
|
2539 |
/************************* SYSTEM POLICY HANDLER *************************/ |
/** |
2540 |
|
* ccs_loader_setup - Specify the policy loader to use. |
2541 |
#ifdef CONFIG_SAKURA |
* |
2542 |
|
* @str: Path to the policy loader. |
2543 |
static int AddSystemPolicy(struct io_buffer *head) |
* |
2544 |
|
* Returns 0. |
2545 |
|
*/ |
2546 |
|
static int __init ccs_loader_setup(char *str) |
2547 |
{ |
{ |
2548 |
char *data = head->write_buf; |
ccs_loader = str; |
2549 |
bool is_delete = 0; |
return 0; |
|
if (!isRoot()) return -EPERM; |
|
|
UpdateCounter(CCS_UPDATES_COUNTER_SYSTEM_POLICY); |
|
|
if (strncmp(data, KEYWORD_DELETE, KEYWORD_DELETE_LEN) == 0) { |
|
|
data += KEYWORD_DELETE_LEN; |
|
|
is_delete = 1; |
|
|
} |
|
|
if (strncmp(data, KEYWORD_ALLOW_MOUNT, KEYWORD_ALLOW_MOUNT_LEN) == 0) |
|
|
return AddMountPolicy(data + KEYWORD_ALLOW_MOUNT_LEN, is_delete); |
|
|
if (strncmp(data, KEYWORD_DENY_UNMOUNT, KEYWORD_DENY_UNMOUNT_LEN) == 0) |
|
|
return AddNoUmountPolicy(data + KEYWORD_DENY_UNMOUNT_LEN, is_delete); |
|
|
if (strncmp(data, KEYWORD_ALLOW_CHROOT, KEYWORD_ALLOW_CHROOT_LEN) == 0) |
|
|
return AddChrootPolicy(data + KEYWORD_ALLOW_CHROOT_LEN, is_delete); |
|
|
if (strncmp(data, KEYWORD_ALLOW_PIVOT_ROOT, KEYWORD_ALLOW_PIVOT_ROOT_LEN) == 0) |
|
|
return AddPivotRootPolicy(data + KEYWORD_ALLOW_PIVOT_ROOT_LEN, is_delete); |
|
|
if (strncmp(data, KEYWORD_DENY_AUTOBIND, KEYWORD_DENY_AUTOBIND_LEN) == 0) |
|
|
return AddReservedPortPolicy(data + KEYWORD_DENY_AUTOBIND_LEN, is_delete); |
|
|
return -EINVAL; |
|
2550 |
} |
} |
2551 |
|
|
2552 |
static int ReadSystemPolicy(struct io_buffer *head) |
__setup("CCS_loader=", ccs_loader_setup); |
2553 |
|
|
2554 |
|
/** |
2555 |
|
* ccs_policy_loader_exists - Check whether /sbin/ccs-init exists. |
2556 |
|
* |
2557 |
|
* Returns true if /sbin/ccs-init exists, false otherwise. |
2558 |
|
*/ |
2559 |
|
static bool ccs_policy_loader_exists(void) |
2560 |
{ |
{ |
2561 |
if (!head->read_eof) { |
/* |
2562 |
switch (head->read_step) { |
* Don't activate MAC if the path given by 'CCS_loader=' option doesn't |
2563 |
case 0: |
* exist. If the initrd includes /sbin/init but real-root-dev has not |
2564 |
if (!isRoot()) return -EPERM; |
* mounted on / yet, activating MAC will block the system since |
2565 |
head->read_var2 = NULL; head->read_step = 1; |
* policies are not loaded yet. |
2566 |
case 1: |
* Thus, let do_execve() call this function everytime. |
2567 |
if (ReadMountPolicy(head)) break; |
*/ |
2568 |
head->read_var2 = NULL; head->read_step = 2; |
struct nameidata nd; |
2569 |
case 2: |
if (!ccs_loader) |
2570 |
if (ReadNoUmountPolicy(head)) break; |
ccs_loader = "/sbin/ccs-init"; |
2571 |
head->read_var2 = NULL; head->read_step = 3; |
if (path_lookup(ccs_loader, ccs_lookup_flags, &nd)) { |
2572 |
case 3: |
printk(KERN_INFO "Not activating Mandatory Access Control now " |
2573 |
if (ReadChrootPolicy(head)) break; |
"since %s doesn't exist.\n", ccs_loader); |
2574 |
head->read_var2 = NULL; head->read_step = 4; |
return false; |
|
case 4: |
|
|
if (ReadPivotRootPolicy(head)) break; |
|
|
head->read_var2 = NULL; head->read_step = 5; |
|
|
case 5: |
|
|
if (ReadReservedPortPolicy(head)) break; |
|
|
head->read_eof = 1; |
|
|
break; |
|
|
default: |
|
|
return -EINVAL; |
|
|
} |
|
2575 |
} |
} |
2576 |
return 0; |
#if LINUX_VERSION_CODE >= KERNEL_VERSION(2, 6, 25) |
2577 |
} |
path_put(&nd.path); |
2578 |
|
#else |
2579 |
|
path_release(&nd); |
2580 |
#endif |
#endif |
2581 |
|
return true; |
2582 |
|
} |
2583 |
|
|
2584 |
/************************* POLICY LOADER *************************/ |
#if LINUX_VERSION_CODE < KERNEL_VERSION(2, 5, 0) |
2585 |
|
/** |
2586 |
static int profile_loaded = 0; |
* ccs_run_loader - Start /sbin/ccs-init . |
2587 |
|
* |
2588 |
static const char *ccs_loader = NULL; |
* @unused: Not used. |
2589 |
|
* |
2590 |
static int __init CCS_loader_Setup(char *str) |
* Returns PID of /sbin/ccs-init on success, negative value otherwise. |
2591 |
|
*/ |
2592 |
|
static int ccs_run_loader(void *unused) |
2593 |
{ |
{ |
2594 |
ccs_loader = str; |
char *argv[2]; |
2595 |
return 0; |
char *envp[3]; |
2596 |
|
printk(KERN_INFO "Calling %s to load policy. Please wait.\n", |
2597 |
|
ccs_loader); |
2598 |
|
argv[0] = (char *) ccs_loader; |
2599 |
|
argv[1] = NULL; |
2600 |
|
envp[0] = "HOME=/"; |
2601 |
|
envp[1] = "PATH=/sbin:/bin:/usr/sbin:/usr/bin"; |
2602 |
|
envp[2] = NULL; |
2603 |
|
return exec_usermodehelper(argv[0], argv, envp); |
2604 |
} |
} |
2605 |
|
#endif |
2606 |
|
|
2607 |
__setup("CCS_loader=", CCS_loader_Setup); |
/** |
2608 |
|
* ccs_load_policy - Run external policy loader to load policy. |
2609 |
void CCS_LoadPolicy(const char *filename) |
* |
2610 |
|
* @filename: The program about to start. |
2611 |
|
* |
2612 |
|
* This function checks whether @filename is /sbin/init , and if so |
2613 |
|
* invoke /sbin/ccs-init and wait for the termination of /sbin/ccs-init |
2614 |
|
* and then continues invocation of /sbin/init. |
2615 |
|
* /sbin/ccs-init reads policy files in /etc/ccs/ directory and |
2616 |
|
* writes to /proc/ccs/ interfaces. |
2617 |
|
* |
2618 |
|
* Returns nothing. |
2619 |
|
*/ |
2620 |
|
void ccs_load_policy(const char *filename) |
2621 |
{ |
{ |
2622 |
if (sbin_init_started) return; |
if (ccs_policy_loaded) |
2623 |
|
return; |
2624 |
/* |
/* |
2625 |
* Check filename is /sbin/init or /sbin/ccs-start . |
* Check filename is /sbin/init or /sbin/ccs-start. |
2626 |
* /sbin/ccs-start is a dummy filename in case where /sbin/init can't be passed. |
* /sbin/ccs-start is a dummy filename in case where /sbin/init can't |
2627 |
* You can create /sbin/ccs-start by "ln -s /bin/true /sbin/ccs-start", for |
* be passed. |
2628 |
* only the pathname is needed to activate Mandatory Access Control. |
* You can create /sbin/ccs-start by "ln -s /bin/true /sbin/ccs-start". |
|
*/ |
|
|
if (strcmp(filename, "/sbin/init") != 0 && strcmp(filename, "/sbin/ccs-start") != 0) return; |
|
|
/* |
|
|
* Don't activate MAC if the path given by 'CCS_loader=' option doesn't exist. |
|
|
* If initrd.img includes /sbin/init but real-root-dev has not mounted on / yet, |
|
|
* activating MAC will block the system since policies are not loaded yet. |
|
|
* So let do_execve() call this function everytime. |
|
2629 |
*/ |
*/ |
2630 |
|
if (strcmp(filename, "/sbin/init") && |
2631 |
|
strcmp(filename, "/sbin/ccs-start")) |
2632 |
|
return; |
2633 |
|
if (!ccs_policy_loader_exists()) |
2634 |
|
return; |
2635 |
|
#if LINUX_VERSION_CODE >= KERNEL_VERSION(2, 5, 0) |
2636 |
{ |
{ |
2637 |
struct nameidata nd; |
char *argv[2]; |
2638 |
if (!ccs_loader) ccs_loader = "/sbin/ccs-init"; |
char *envp[3]; |
2639 |
if (path_lookup(ccs_loader, lookup_flags, &nd)) { |
printk(KERN_INFO "Calling %s to load policy. Please wait.\n", |
2640 |
printk("Not activating Mandatory Access Control now since %s doesn't exist.\n", ccs_loader); |
ccs_loader); |
|
return; |
|
|
} |
|
|
path_release(&nd); |
|
|
} |
|
|
if (!profile_loaded) { |
|
|
char *argv[2], *envp[3]; |
|
|
printk("Calling %s to load policy. Please wait.\n", ccs_loader); |
|
2641 |
argv[0] = (char *) ccs_loader; |
argv[0] = (char *) ccs_loader; |
2642 |
argv[1] = NULL; |
argv[1] = NULL; |
2643 |
envp[0] = "HOME=/"; |
envp[0] = "HOME=/"; |
2644 |
envp[1] = "PATH=/sbin:/bin:/usr/sbin:/usr/bin"; |
envp[1] = "PATH=/sbin:/bin:/usr/sbin:/usr/bin"; |
2645 |
envp[2] = NULL; |
envp[2] = NULL; |
|
#if LINUX_VERSION_CODE >= KERNEL_VERSION(2,5,0) |
|
2646 |
call_usermodehelper(argv[0], argv, envp, 1); |
call_usermodehelper(argv[0], argv, envp, 1); |
|
#else |
|
|
call_usermodehelper(argv[0], argv, envp); |
|
|
#endif |
|
|
while (!profile_loaded) { |
|
|
set_current_state(TASK_INTERRUPTIBLE); |
|
|
schedule_timeout(HZ / 10); |
|
|
} |
|
2647 |
} |
} |
2648 |
#ifdef CONFIG_SAKURA |
#elif defined(TASK_DEAD) |
2649 |
printk("SAKURA: 1.5.3-pre 2007/12/18\n"); |
{ |
2650 |
#endif |
/* Copied from kernel/kmod.c */ |
|