5 |
* |
* |
6 |
* Copyright (C) 2005-2008 NTT DATA CORPORATION |
* Copyright (C) 2005-2008 NTT DATA CORPORATION |
7 |
* |
* |
8 |
* Version: 1.5.3-pre 2008/01/02 |
* Version: 1.6.1 2008/06/04 |
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 |
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#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 lookup_flags = LOOKUP_FOLLOW; |
35 |
#include <linux/ccs_common.h> |
#include <linux/ccs_common.h> |
36 |
#include <linux/ccs_proc.h> |
#include <linux/ccs_proc.h> |
37 |
#include <linux/tomoyo.h> |
#include <linux/tomoyo.h> |
38 |
|
#if LINUX_VERSION_CODE < KERNEL_VERSION(2, 5, 0) |
39 |
#ifdef CONFIG_TOMOYO_MAX_ACCEPT_ENTRY |
#include <linux/unistd.h> |
|
#define MAX_ACCEPT_ENTRY (CONFIG_TOMOYO_MAX_ACCEPT_ENTRY) |
|
|
#else |
|
|
#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 |
|
40 |
#endif |
#endif |
41 |
#ifdef CONFIG_TOMOYO_MAX_REJECT_LOG |
|
42 |
#define MAX_REJECT_LOG (CONFIG_TOMOYO_MAX_REJECT_LOG) |
/* To support PID namespace. */ |
43 |
#else |
#if LINUX_VERSION_CODE >= KERNEL_VERSION(2, 6, 24) |
44 |
#define MAX_REJECT_LOG 1024 |
#define find_task_by_pid find_task_by_vpid |
45 |
#endif |
#endif |
46 |
|
|
47 |
/************************* VARIABLES *************************/ |
/* Set default specified by the kernel config. */ |
48 |
|
#define MAX_ACCEPT_ENTRY (CONFIG_TOMOYO_MAX_ACCEPT_ENTRY) |
49 |
|
#define MAX_GRANT_LOG (CONFIG_TOMOYO_MAX_GRANT_LOG) |
50 |
|
#define MAX_REJECT_LOG (CONFIG_TOMOYO_MAX_REJECT_LOG) |
51 |
|
|
52 |
/* /sbin/init started? */ |
/* Has /sbin/init started? */ |
53 |
bool sbin_init_started = 0; |
bool sbin_init_started = false; |
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 *mode_4[4] = { |
60 |
|
"disabled", "learning", "permissive", "enforcing" |
61 |
|
}; |
62 |
|
/* String table for functionality that takes 2 modes. */ |
63 |
|
static const char *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] = { |
|
[CCS_PROFILE_COMMENT] = { "COMMENT", 0, 0 }, /* Reserved for string. */ |
|
73 |
[CCS_TOMOYO_MAC_FOR_FILE] = { "MAC_FOR_FILE", 0, 3 }, |
[CCS_TOMOYO_MAC_FOR_FILE] = { "MAC_FOR_FILE", 0, 3 }, |
74 |
[CCS_TOMOYO_MAC_FOR_ARGV0] = { "MAC_FOR_ARGV0", 0, 3 }, |
[CCS_TOMOYO_MAC_FOR_ARGV0] = { "MAC_FOR_ARGV0", 0, 3 }, |
75 |
[CCS_TOMOYO_MAC_FOR_ENV] = { "MAC_FOR_ENV", 0, 3 }, |
[CCS_TOMOYO_MAC_FOR_ENV] = { "MAC_FOR_ENV", 0, 3 }, |
81 |
[CCS_SAKURA_RESTRICT_UNMOUNT] = { "RESTRICT_UNMOUNT", 0, 3 }, |
[CCS_SAKURA_RESTRICT_UNMOUNT] = { "RESTRICT_UNMOUNT", 0, 3 }, |
82 |
[CCS_SAKURA_RESTRICT_PIVOT_ROOT] = { "RESTRICT_PIVOT_ROOT", 0, 3 }, |
[CCS_SAKURA_RESTRICT_PIVOT_ROOT] = { "RESTRICT_PIVOT_ROOT", 0, 3 }, |
83 |
[CCS_SAKURA_RESTRICT_AUTOBIND] = { "RESTRICT_AUTOBIND", 0, 1 }, |
[CCS_SAKURA_RESTRICT_AUTOBIND] = { "RESTRICT_AUTOBIND", 0, 1 }, |
84 |
[CCS_TOMOYO_MAX_ACCEPT_ENTRY] = { "MAX_ACCEPT_ENTRY", MAX_ACCEPT_ENTRY, INT_MAX }, |
[CCS_TOMOYO_MAX_ACCEPT_ENTRY] |
85 |
[CCS_TOMOYO_MAX_GRANT_LOG] = { "MAX_GRANT_LOG", MAX_GRANT_LOG, INT_MAX }, |
= { "MAX_ACCEPT_ENTRY", MAX_ACCEPT_ENTRY, INT_MAX }, |
86 |
[CCS_TOMOYO_MAX_REJECT_LOG] = { "MAX_REJECT_LOG", MAX_REJECT_LOG, INT_MAX }, |
[CCS_TOMOYO_MAX_GRANT_LOG] |
87 |
|
= { "MAX_GRANT_LOG", MAX_GRANT_LOG, INT_MAX }, |
88 |
|
[CCS_TOMOYO_MAX_REJECT_LOG] |
89 |
|
= { "MAX_REJECT_LOG", MAX_REJECT_LOG, INT_MAX }, |
90 |
[CCS_TOMOYO_VERBOSE] = { "TOMOYO_VERBOSE", 1, 1 }, |
[CCS_TOMOYO_VERBOSE] = { "TOMOYO_VERBOSE", 1, 1 }, |
91 |
[CCS_ALLOW_ENFORCE_GRACE] = { "ALLOW_ENFORCE_GRACE", 0, 1 }, |
[CCS_ALLOW_ENFORCE_GRACE] = { "ALLOW_ENFORCE_GRACE", 0, 1 }, |
92 |
[CCS_SLEEP_PERIOD] = { "SLEEP_PERIOD", 0, 3000 }, /* in 0.1 second */ |
[CCS_SLEEP_PERIOD] |
93 |
[CCS_TOMOYO_ALT_EXEC] = { "ALT_EXEC", 0, 0 }, /* Reserved for string. */ |
= { "SLEEP_PERIOD", 0, 3000 }, /* in 0.1 second */ |
94 |
|
}; |
95 |
|
|
96 |
|
#ifdef CONFIG_TOMOYO |
97 |
|
/* Capability name used by domain policy. */ |
98 |
|
static const char *capability_control_keyword[TOMOYO_MAX_CAPABILITY_INDEX] = { |
99 |
|
[TOMOYO_INET_STREAM_SOCKET_CREATE] = "inet_tcp_create", |
100 |
|
[TOMOYO_INET_STREAM_SOCKET_LISTEN] = "inet_tcp_listen", |
101 |
|
[TOMOYO_INET_STREAM_SOCKET_CONNECT] = "inet_tcp_connect", |
102 |
|
[TOMOYO_USE_INET_DGRAM_SOCKET] = "use_inet_udp", |
103 |
|
[TOMOYO_USE_INET_RAW_SOCKET] = "use_inet_ip", |
104 |
|
[TOMOYO_USE_ROUTE_SOCKET] = "use_route", |
105 |
|
[TOMOYO_USE_PACKET_SOCKET] = "use_packet", |
106 |
|
[TOMOYO_SYS_MOUNT] = "SYS_MOUNT", |
107 |
|
[TOMOYO_SYS_UMOUNT] = "SYS_UMOUNT", |
108 |
|
[TOMOYO_SYS_REBOOT] = "SYS_REBOOT", |
109 |
|
[TOMOYO_SYS_CHROOT] = "SYS_CHROOT", |
110 |
|
[TOMOYO_SYS_KILL] = "SYS_KILL", |
111 |
|
[TOMOYO_SYS_VHANGUP] = "SYS_VHANGUP", |
112 |
|
[TOMOYO_SYS_SETTIME] = "SYS_TIME", |
113 |
|
[TOMOYO_SYS_NICE] = "SYS_NICE", |
114 |
|
[TOMOYO_SYS_SETHOSTNAME] = "SYS_SETHOSTNAME", |
115 |
|
[TOMOYO_USE_KERNEL_MODULE] = "use_kernel_module", |
116 |
|
[TOMOYO_CREATE_FIFO] = "create_fifo", |
117 |
|
[TOMOYO_CREATE_BLOCK_DEV] = "create_block_dev", |
118 |
|
[TOMOYO_CREATE_CHAR_DEV] = "create_char_dev", |
119 |
|
[TOMOYO_CREATE_UNIX_SOCKET] = "create_unix_socket", |
120 |
|
[TOMOYO_SYS_LINK] = "SYS_LINK", |
121 |
|
[TOMOYO_SYS_SYMLINK] = "SYS_SYMLINK", |
122 |
|
[TOMOYO_SYS_RENAME] = "SYS_RENAME", |
123 |
|
[TOMOYO_SYS_UNLINK] = "SYS_UNLINK", |
124 |
|
[TOMOYO_SYS_CHMOD] = "SYS_CHMOD", |
125 |
|
[TOMOYO_SYS_CHOWN] = "SYS_CHOWN", |
126 |
|
[TOMOYO_SYS_IOCTL] = "SYS_IOCTL", |
127 |
|
[TOMOYO_SYS_KEXEC_LOAD] = "SYS_KEXEC_LOAD", |
128 |
|
[TOMOYO_SYS_PIVOT_ROOT] = "SYS_PIVOT_ROOT", |
129 |
|
[TOMOYO_SYS_PTRACE] = "SYS_PTRACE", |
130 |
}; |
}; |
131 |
|
#endif |
132 |
|
|
133 |
struct profile { |
/* Profile table. Memory is allocated as needed. */ |
134 |
|
static struct profile { |
135 |
unsigned int value[CCS_MAX_CONTROL_INDEX]; |
unsigned int value[CCS_MAX_CONTROL_INDEX]; |
136 |
const struct path_info *comment; |
const struct path_info *comment; |
137 |
const struct path_info *alt_exec; |
#ifdef CONFIG_TOMOYO |
138 |
}; |
unsigned char capability_value[TOMOYO_MAX_CAPABILITY_INDEX]; |
139 |
|
#endif |
140 |
|
} *profile_ptr[MAX_PROFILES]; |
141 |
|
|
142 |
static struct profile *profile_ptr[MAX_PROFILES]; |
/* Permit policy management by non-root user? */ |
143 |
|
static bool manage_by_non_root = false; |
144 |
|
|
145 |
/************************* UTILITY FUNCTIONS *************************/ |
/* Utility functions. */ |
146 |
|
|
147 |
#ifdef CONFIG_TOMOYO |
#ifdef CONFIG_TOMOYO |
148 |
static int __init TOMOYO_Quiet_Setup(char *str) |
/** |
149 |
|
* tomoyo_quiet_setup - Set TOMOYO_VERBOSE=0 by default. |
150 |
|
* |
151 |
|
* @str: Unused. |
152 |
|
* |
153 |
|
* Returns 0. |
154 |
|
*/ |
155 |
|
static int __init tomoyo_quiet_setup(char *str) |
156 |
{ |
{ |
157 |
ccs_control_array[CCS_TOMOYO_VERBOSE].current_value = 0; |
ccs_control_array[CCS_TOMOYO_VERBOSE].current_value = 0; |
158 |
return 0; |
return 0; |
159 |
} |
} |
160 |
|
|
161 |
__setup("TOMOYO_QUIET", TOMOYO_Quiet_Setup); |
__setup("TOMOYO_QUIET", tomoyo_quiet_setup); |
162 |
#endif |
#endif |
163 |
|
|
164 |
/* Am I root? */ |
/** |
165 |
static int isRoot(void) |
* is_byte_range - Check whether the string isa \ooo style octal value. |
166 |
|
* |
167 |
|
* @str: Pointer to the string. |
168 |
|
* |
169 |
|
* Returns true if @str is a \ooo style octal value, false otherwise. |
170 |
|
*/ |
171 |
|
static bool is_byte_range(const char *str) |
172 |
|
{ |
173 |
|
return *str >= '0' && *str++ <= '3' && |
174 |
|
*str >= '0' && *str++ <= '7' && |
175 |
|
*str >= '0' && *str <= '7'; |
176 |
|
} |
177 |
|
|
178 |
|
/** |
179 |
|
* is_decimal - Check whether the character is a decimal character. |
180 |
|
* |
181 |
|
* @c: The character to check. |
182 |
|
* |
183 |
|
* Returns true if @c is a decimal character, false otherwise. |
184 |
|
*/ |
185 |
|
static bool is_decimal(const char c) |
186 |
|
{ |
187 |
|
return (c >= '0' && c <= '9'); |
188 |
|
} |
189 |
|
|
190 |
|
/** |
191 |
|
* is_hexadecimal - Check whether the character is a hexadecimal character. |
192 |
|
* |
193 |
|
* @c: The character to check. |
194 |
|
* |
195 |
|
* Returns true if @c is a hexadecimal character, false otherwise. |
196 |
|
*/ |
197 |
|
static bool is_hexadecimal(const char c) |
198 |
{ |
{ |
199 |
return !current->uid && !current->euid; |
return ((c >= '0' && c <= '9') || |
200 |
|
(c >= 'A' && c <= 'F') || |
201 |
|
(c >= 'a' && c <= 'f')); |
202 |
} |
} |
203 |
|
|
204 |
/* |
/** |
205 |
* Format string. |
* is_alphabet_char - Check whether the character is an alphabet. |
206 |
|
* |
207 |
|
* @c: The character to check. |
208 |
|
* |
209 |
|
* Returns true if @c is an alphabet character, false otherwise. |
210 |
|
*/ |
211 |
|
static bool is_alphabet_char(const char c) |
212 |
|
{ |
213 |
|
return ((c >= 'A' && c <= 'F') || (c >= 'a' && c <= 'f')); |
214 |
|
} |
215 |
|
|
216 |
|
/** |
217 |
|
* make_byte - Make byte value from three octal characters. |
218 |
|
* |
219 |
|
* @c1: The first character. |
220 |
|
* @c2: The second character. |
221 |
|
* @c3: The third character. |
222 |
|
* |
223 |
|
* Returns byte value. |
224 |
|
*/ |
225 |
|
static u8 make_byte(const u8 c1, const u8 c2, const u8 c3) |
226 |
|
{ |
227 |
|
return ((c1 - '0') << 6) + ((c2 - '0') << 3) + (c3 - '0'); |
228 |
|
} |
229 |
|
|
230 |
|
/** |
231 |
|
* str_starts - Check whether the given string starts with the given keyword. |
232 |
|
* |
233 |
|
* @src: Pointer to pointer to the string. |
234 |
|
* @find: Pointer to the keyword. |
235 |
|
* |
236 |
|
* Returns true if @src starts with @find, false otherwise. |
237 |
|
* |
238 |
|
* The @src is updated to point the first character after the @find |
239 |
|
* if @src starts with @find. |
240 |
|
*/ |
241 |
|
static bool str_starts(char **src, const char *find) |
242 |
|
{ |
243 |
|
const int len = strlen(find); |
244 |
|
char *tmp = *src; |
245 |
|
if (strncmp(tmp, find, len)) |
246 |
|
return false; |
247 |
|
tmp += len; |
248 |
|
*src = tmp; |
249 |
|
return true; |
250 |
|
} |
251 |
|
|
252 |
|
/** |
253 |
|
* normalize_line - Format string. |
254 |
|
* |
255 |
|
* @buffer: The line to normalize. |
256 |
|
* |
257 |
* Leading and trailing whitespaces are removed. |
* Leading and trailing whitespaces are removed. |
258 |
* Multiple whitespaces are packed into single space. |
* Multiple whitespaces are packed into single space. |
259 |
|
* |
260 |
|
* Returns nothing. |
261 |
*/ |
*/ |
262 |
static void NormalizeLine(unsigned char *buffer) |
static void normalize_line(unsigned char *buffer) |
263 |
{ |
{ |
264 |
unsigned char *sp = buffer, *dp = buffer; |
unsigned char *sp = buffer; |
265 |
int first = 1; |
unsigned char *dp = buffer; |
266 |
while (*sp && (*sp <= ' ' || *sp >= 127)) sp++; |
bool first = true; |
267 |
|
while (*sp && (*sp <= ' ' || *sp >= 127)) |
268 |
|
sp++; |
269 |
while (*sp) { |
while (*sp) { |
270 |
if (!first) *dp++ = ' '; |
if (!first) |
271 |
first = 0; |
*dp++ = ' '; |
272 |
while (*sp > ' ' && *sp < 127) *dp++ = *sp++; |
first = false; |
273 |
while (*sp && (*sp <= ' ' || *sp >= 127)) sp++; |
while (*sp > ' ' && *sp < 127) |
274 |
|
*dp++ = *sp++; |
275 |
|
while (*sp && (*sp <= ' ' || *sp >= 127)) |
276 |
|
sp++; |
277 |
} |
} |
278 |
*dp = '\0'; |
*dp = '\0'; |
279 |
} |
} |
280 |
|
|
281 |
/* |
/** |
282 |
* Check whether the given filename follows the naming rules. |
* ccs_is_correct_path - Validate a pathname. |
283 |
* Returns nonzero if follows, zero otherwise. |
* @filename: The pathname to check. |
284 |
|
* @start_type: Should the pathname start with '/'? |
285 |
|
* 1 = must / -1 = must not / 0 = don't care |
286 |
|
* @pattern_type: Can the pathname contain a wildcard? |
287 |
|
* 1 = must / -1 = must not / 0 = don't care |
288 |
|
* @end_type: Should the pathname end with '/'? |
289 |
|
* 1 = must / -1 = must not / 0 = don't care |
290 |
|
* @function: The name of function calling me. |
291 |
|
* |
292 |
|
* Check whether the given filename follows the naming rules. |
293 |
|
* Returns true if @filename follows the naming rules, false otherwise. |
294 |
*/ |
*/ |
295 |
bool IsCorrectPath(const char *filename, const s8 start_type, const s8 pattern_type, const s8 end_type, const char *function) |
bool ccs_is_correct_path(const char *filename, const s8 start_type, |
296 |
{ |
const s8 pattern_type, const s8 end_type, |
297 |
int contains_pattern = 0; |
const char *function) |
298 |
char c, d, e; |
{ |
299 |
|
bool contains_pattern = false; |
300 |
|
unsigned char c; |
301 |
|
unsigned char d; |
302 |
|
unsigned char e; |
303 |
const char *original_filename = filename; |
const char *original_filename = filename; |
304 |
if (!filename) goto out; |
if (!filename) |
305 |
|
goto out; |
306 |
c = *filename; |
c = *filename; |
307 |
if (start_type == 1) { /* Must start with '/' */ |
if (start_type == 1) { /* Must start with '/' */ |
308 |
if (c != '/') goto out; |
if (c != '/') |
309 |
|
goto out; |
310 |
} else if (start_type == -1) { /* Must not start with '/' */ |
} else if (start_type == -1) { /* Must not start with '/' */ |
311 |
if (c == '/') goto out; |
if (c == '/') |
312 |
|
goto out; |
313 |
} |
} |
314 |
if (c) c = * (strchr(filename, '\0') - 1); |
if (c) |
315 |
|
c = *(strchr(filename, '\0') - 1); |
316 |
if (end_type == 1) { /* Must end with '/' */ |
if (end_type == 1) { /* Must end with '/' */ |
317 |
if (c != '/') goto out; |
if (c != '/') |
318 |
|
goto out; |
319 |
} else if (end_type == -1) { /* Must not end with '/' */ |
} else if (end_type == -1) { /* Must not end with '/' */ |
320 |
if (c == '/') goto out; |
if (c == '/') |
321 |
|
goto out; |
322 |
} |
} |
323 |
while ((c = *filename++) != '\0') { |
while ((c = *filename++) != '\0') { |
324 |
if (c == '\\') { |
if (c == '\\') { |
335 |
case 'a': /* "\a" */ |
case 'a': /* "\a" */ |
336 |
case 'A': /* "\A" */ |
case 'A': /* "\A" */ |
337 |
case '-': /* "\-" */ |
case '-': /* "\-" */ |
338 |
if (pattern_type == -1) break; /* Must not contain pattern */ |
if (pattern_type == -1) |
339 |
contains_pattern = 1; |
break; /* Must not contain pattern */ |
340 |
|
contains_pattern = true; |
341 |
continue; |
continue; |
342 |
case '0': /* "\ooo" */ |
case '0': /* "\ooo" */ |
343 |
case '1': |
case '1': |
344 |
case '2': |
case '2': |
345 |
case '3': |
case '3': |
346 |
if ((d = *filename++) >= '0' && d <= '7' && (e = *filename++) >= '0' && e <= '7') { |
d = *filename++; |
347 |
const unsigned char f = |
if (d < '0' || d > '7') |
348 |
(((unsigned char) (c - '0')) << 6) + |
break; |
349 |
(((unsigned char) (d - '0')) << 3) + |
e = *filename++; |
350 |
(((unsigned char) (e - '0'))); |
if (e < '0' || e > '7') |
351 |
if (f && (f <= ' ' || f >= 127)) continue; /* pattern is not \000 */ |
break; |
352 |
} |
c = make_byte(c, d, e); |
353 |
|
if (c && (c <= ' ' || c >= 127)) |
354 |
|
continue; /* pattern is not \000 */ |
355 |
} |
} |
356 |
goto out; |
goto out; |
357 |
} else if (c <= ' ' || c >= 127) { |
} else if (c <= ' ' || c >= 127) { |
359 |
} |
} |
360 |
} |
} |
361 |
if (pattern_type == 1) { /* Must contain pattern */ |
if (pattern_type == 1) { /* Must contain pattern */ |
362 |
if (!contains_pattern) goto out; |
if (!contains_pattern) |
363 |
|
goto out; |
364 |
} |
} |
365 |
return 1; |
return true; |
366 |
out: |
out: |
367 |
printk(KERN_DEBUG "%s: Invalid pathname '%s'\n", function, original_filename); |
printk(KERN_DEBUG "%s: Invalid pathname '%s'\n", function, |
368 |
return 0; |
original_filename); |
369 |
|
return false; |
370 |
} |
} |
371 |
|
|
372 |
/* |
/** |
373 |
* Check whether the given domainname follows the naming rules. |
* ccs_is_correct_domain - Check whether the given domainname follows the naming rules. |
374 |
* Returns nonzero if follows, zero otherwise. |
* @domainname: The domainname to check. |
375 |
|
* @function: The name of function calling me. |
376 |
|
* |
377 |
|
* Returns true if @domainname follows the naming rules, false otherwise. |
378 |
*/ |
*/ |
379 |
bool IsCorrectDomain(const unsigned char *domainname, const char *function) |
bool ccs_is_correct_domain(const unsigned char *domainname, |
380 |
|
const char *function) |
381 |
{ |
{ |
382 |
unsigned char c, d, e; |
unsigned char c; |
383 |
|
unsigned char d; |
384 |
|
unsigned char e; |
385 |
const char *org_domainname = domainname; |
const char *org_domainname = domainname; |
386 |
if (!domainname || strncmp(domainname, ROOT_NAME, ROOT_NAME_LEN)) goto out; |
if (!domainname || strncmp(domainname, ROOT_NAME, ROOT_NAME_LEN)) |
387 |
|
goto out; |
388 |
domainname += ROOT_NAME_LEN; |
domainname += ROOT_NAME_LEN; |
389 |
if (!*domainname) return 1; |
if (!*domainname) |
390 |
|
return true; |
391 |
do { |
do { |
392 |
if (*domainname++ != ' ') goto out; |
if (*domainname++ != ' ') |
393 |
if (*domainname++ != '/') goto out; |
goto out; |
394 |
|
if (*domainname++ != '/') |
395 |
|
goto out; |
396 |
while ((c = *domainname) != '\0' && c != ' ') { |
while ((c = *domainname) != '\0' && c != ' ') { |
397 |
domainname++; |
domainname++; |
398 |
if (c == '\\') { |
if (c == '\\') { |
399 |
switch ((c = *domainname++)) { |
c = *domainname++; |
400 |
|
switch ((c)) { |
401 |
case '\\': /* "\\" */ |
case '\\': /* "\\" */ |
402 |
continue; |
continue; |
403 |
case '0': /* "\ooo" */ |
case '0': /* "\ooo" */ |
404 |
case '1': |
case '1': |
405 |
case '2': |
case '2': |
406 |
case '3': |
case '3': |
407 |
if ((d = *domainname++) >= '0' && d <= '7' && (e = *domainname++) >= '0' && e <= '7') { |
d = *domainname++; |
408 |
const unsigned char f = |
if (d < '0' || d > '7') |
409 |
(((unsigned char) (c - '0')) << 6) + |
break; |
410 |
(((unsigned char) (d - '0')) << 3) + |
e = *domainname++; |
411 |
(((unsigned char) (e - '0'))); |
if (e < '0' || e > '7') |
412 |
if (f && (f <= ' ' || f >= 127)) continue; /* pattern is not \000 */ |
break; |
413 |
} |
c = make_byte(c, d, e); |
414 |
|
if (c && (c <= ' ' || c >= 127)) |
415 |
|
/* pattern is not \000 */ |
416 |
|
continue; |
417 |
} |
} |
418 |
goto out; |
goto out; |
419 |
} else if (c < ' ' || c >= 127) { |
} else if (c < ' ' || c >= 127) { |
421 |
} |
} |
422 |
} |
} |
423 |
} while (*domainname); |
} while (*domainname); |
424 |
return 1; |
return true; |
425 |
out: |
out: |
426 |
printk(KERN_DEBUG "%s: Invalid domainname '%s'\n", function, org_domainname); |
printk(KERN_DEBUG "%s: Invalid domainname '%s'\n", function, |
427 |
return 0; |
org_domainname); |
428 |
|
return false; |
429 |
} |
} |
430 |
|
|
431 |
bool IsDomainDef(const unsigned char *buffer) |
/** |
432 |
|
* ccs_is_domain_def - Check whether the given token can be a domainname. |
433 |
|
* |
434 |
|
* @buffer: The token to check. |
435 |
|
* |
436 |
|
* Returns true if @buffer possibly be a domainname, false otherwise. |
437 |
|
*/ |
438 |
|
bool ccs_is_domain_def(const unsigned char *buffer) |
439 |
{ |
{ |
440 |
/* while (*buffer && (*buffer <= ' ' || *buffer >= 127)) buffer++; */ |
return !strncmp(buffer, ROOT_NAME, ROOT_NAME_LEN); |
|
return strncmp(buffer, ROOT_NAME, ROOT_NAME_LEN) == 0; |
|
441 |
} |
} |
442 |
|
|
443 |
struct domain_info *FindDomain(const char *domainname0) |
/** |
444 |
|
* ccs_find_domain - Find a domain by the given name. |
445 |
|
* |
446 |
|
* @domainname: The domainname to find. |
447 |
|
* |
448 |
|
* Returns pointer to "struct domain_info" if found, NULL otherwise. |
449 |
|
*/ |
450 |
|
struct domain_info *ccs_find_domain(const char *domainname) |
451 |
{ |
{ |
452 |
struct domain_info *domain; |
struct domain_info *domain; |
453 |
struct path_info domainname; |
struct path_info name; |
454 |
domainname.name = domainname0; |
name.name = domainname; |
455 |
fill_path_info(&domainname); |
ccs_fill_path_info(&name); |
456 |
list1_for_each_entry(domain, &domain_list, list) { |
list1_for_each_entry(domain, &domain_list, list) { |
457 |
if (!domain->is_deleted && !pathcmp(&domainname, domain->domainname)) return domain; |
if (!domain->is_deleted && |
458 |
|
!ccs_pathcmp(&name, domain->domainname)) |
459 |
|
return domain; |
460 |
} |
} |
461 |
return NULL; |
return NULL; |
462 |
} |
} |
463 |
|
|
464 |
static int PathDepth(const char *pathname) |
/** |
465 |
|
* path_depth - Evaluate the number of '/' in a string. |
466 |
|
* |
467 |
|
* @pathname: The string to evaluate. |
468 |
|
* |
469 |
|
* Returns path depth of the string. |
470 |
|
* |
471 |
|
* I score 2 for each of the '/' in the @pathname |
472 |
|
* and score 1 if the @pathname ends with '/'. |
473 |
|
*/ |
474 |
|
static int path_depth(const char *pathname) |
475 |
{ |
{ |
476 |
int i = 0; |
int i = 0; |
477 |
if (pathname) { |
if (pathname) { |
478 |
char *ep = strchr(pathname, '\0'); |
char *ep = strchr(pathname, '\0'); |
479 |
if (pathname < ep--) { |
if (pathname < ep--) { |
480 |
if (*ep != '/') i++; |
if (*ep != '/') |
481 |
while (pathname <= ep) if (*ep-- == '/') i += 2; |
i++; |
482 |
|
while (pathname <= ep) |
483 |
|
if (*ep-- == '/') |
484 |
|
i += 2; |
485 |
} |
} |
486 |
} |
} |
487 |
return i; |
return i; |
488 |
} |
} |
489 |
|
|
490 |
|
/** |
491 |
|
* const_part_length - Evaluate the initial length without a pattern in a token. |
492 |
|
* |
493 |
|
* @filename: The string to evaluate. |
494 |
|
* |
495 |
|
* Returns the initial length without a pattern in @filename. |
496 |
|
*/ |
497 |
static int const_part_length(const char *filename) |
static int const_part_length(const char *filename) |
498 |
{ |
{ |
499 |
|
char c; |
500 |
int len = 0; |
int len = 0; |
501 |
if (filename) { |
if (!filename) |
502 |
char c; |
return 0; |
503 |
while ((c = *filename++) != '\0') { |
while ((c = *filename++) != '\0') { |
504 |
if (c != '\\') { len++; continue; } |
if (c != '\\') { |
505 |
switch (c = *filename++) { |
len++; |
506 |
case '\\': /* "\\" */ |
continue; |
507 |
len += 2; continue; |
} |
508 |
case '0': /* "\ooo" */ |
c = *filename++; |
509 |
case '1': |
switch (c) { |
510 |
case '2': |
case '\\': /* "\\" */ |
511 |
case '3': |
len += 2; |
512 |
if ((c = *filename++) >= '0' && c <= '7' && (c = *filename++) >= '0' && c <= '7') { len += 4; continue; } |
continue; |
513 |
} |
case '0': /* "\ooo" */ |
514 |
break; |
case '1': |
515 |
|
case '2': |
516 |
|
case '3': |
517 |
|
c = *filename++; |
518 |
|
if (c < '0' || c > '7') |
519 |
|
break; |
520 |
|
c = *filename++; |
521 |
|
if (c < '0' || c > '7') |
522 |
|
break; |
523 |
|
len += 4; |
524 |
|
continue; |
525 |
} |
} |
526 |
|
break; |
527 |
} |
} |
528 |
return len; |
return len; |
529 |
} |
} |
530 |
|
|
531 |
void fill_path_info(struct path_info *ptr) |
/** |
532 |
|
* ccs_fill_path_info - Fill in "struct path_info" members. |
533 |
|
* |
534 |
|
* @ptr: Pointer to "struct path_info" to fill in. |
535 |
|
* |
536 |
|
* The caller sets "struct path_info"->name. |
537 |
|
*/ |
538 |
|
void ccs_fill_path_info(struct path_info *ptr) |
539 |
{ |
{ |
540 |
const char *name = ptr->name; |
const char *name = ptr->name; |
541 |
const int len = strlen(name); |
const int len = strlen(name); |
544 |
ptr->is_dir = len && (name[len - 1] == '/'); |
ptr->is_dir = len && (name[len - 1] == '/'); |
545 |
ptr->is_patterned = (ptr->const_len < len); |
ptr->is_patterned = (ptr->const_len < len); |
546 |
ptr->hash = full_name_hash(name, len); |
ptr->hash = full_name_hash(name, len); |
547 |
ptr->depth = PathDepth(name); |
ptr->depth = path_depth(name); |
548 |
} |
} |
549 |
|
|
550 |
static int FileMatchesToPattern2(const char *filename, const char *filename_end, const char *pattern, const char *pattern_end) |
/** |
551 |
|
* file_matches_to_pattern2 - Pattern matching without '/' character |
552 |
|
* and "\-" pattern. |
553 |
|
* |
554 |
|
* @filename: The start of string to check. |
555 |
|
* @filename_end: The end of string to check. |
556 |
|
* @pattern: The start of pattern to compare. |
557 |
|
* @pattern_end: The end of pattern to compare. |
558 |
|
* |
559 |
|
* Returns true if @filename matches @pattern, false otherwise. |
560 |
|
*/ |
561 |
|
static bool file_matches_to_pattern2(const char *filename, |
562 |
|
const char *filename_end, |
563 |
|
const char *pattern, |
564 |
|
const char *pattern_end) |
565 |
{ |
{ |
566 |
while (filename < filename_end && pattern < pattern_end) { |
while (filename < filename_end && pattern < pattern_end) { |
567 |
|
char c; |
568 |
if (*pattern != '\\') { |
if (*pattern != '\\') { |
569 |
if (*filename++ != *pattern++) return 0; |
if (*filename++ != *pattern++) |
570 |
} else { |
return false; |
571 |
char c = *filename; |
continue; |
572 |
pattern++; |
} |
573 |
switch (*pattern) { |
c = *filename; |
574 |
case '?': |
pattern++; |
575 |
if (c == '/') { |
switch (*pattern) { |
576 |
return 0; |
int i; |
577 |
} else if (c == '\\') { |
int j; |
578 |
if ((c = filename[1]) == '\\') { |
case '?': |
579 |
filename++; /* safe because filename is \\ */ |
if (c == '/') { |
580 |
} else if (c >= '0' && c <= '3' && (c = filename[2]) >= '0' && c <= '7' && (c = filename[3]) >= '0' && c <= '7') { |
return false; |
581 |
filename += 3; /* safe because filename is \ooo */ |
} else if (c == '\\') { |
582 |
} else { |
if (filename[1] == '\\') |
583 |
return 0; |
filename++; |
584 |
} |
else if (is_byte_range(filename + 1)) |
585 |
} |
filename += 3; |
586 |
break; |
else |
587 |
case '\\': |
return false; |
588 |
if (c != '\\') return 0; |
} |
589 |
if (*++filename != '\\') return 0; /* safe because *filename != '\0' */ |
break; |
590 |
break; |
case '\\': |
591 |
case '+': |
if (c != '\\') |
592 |
if (c < '0' || c > '9') return 0; |
return false; |
593 |
break; |
if (*++filename != '\\') |
594 |
case 'x': |
return false; |
595 |
if (!((c >= '0' && c <= '9') || (c >= 'A' && c <= 'F') || (c >= 'a' && c <= 'f'))) return 0; |
break; |
596 |
break; |
case '+': |
597 |
case 'a': |
if (!is_decimal(c)) |
598 |
if (!((c >= 'A' && c <= 'Z') || (c >= 'a' && c <= 'z'))) return 0; |
return false; |
599 |
|
break; |
600 |
|
case 'x': |
601 |
|
if (!is_hexadecimal(c)) |
602 |
|
return false; |
603 |
|
break; |
604 |
|
case 'a': |
605 |
|
if (!is_alphabet_char(c)) |
606 |
|
return false; |
607 |
|
break; |
608 |
|
case '0': |
609 |
|
case '1': |
610 |
|
case '2': |
611 |
|
case '3': |
612 |
|
if (c == '\\' && is_byte_range(filename + 1) |
613 |
|
&& strncmp(filename + 1, pattern, 3) == 0) { |
614 |
|
filename += 3; |
615 |
|
pattern += 2; |
616 |
break; |
break; |
617 |
case '0': |
} |
618 |
case '1': |
return false; /* Not matched. */ |
619 |
case '2': |
case '*': |
620 |
case '3': |
case '@': |
621 |
if (c == '\\' && (c = filename[1]) >= '0' && c <= '3' && c == *pattern |
for (i = 0; i <= filename_end - filename; i++) { |
622 |
&& (c = filename[2]) >= '0' && c <= '7' && c == pattern[1] |
if (file_matches_to_pattern2(filename + i, |
623 |
&& (c = filename[3]) >= '0' && c <= '7' && c == pattern[2]) { |
filename_end, |
624 |
filename += 3; /* safe because filename is \ooo */ |
pattern + 1, |
625 |
pattern += 2; /* safe because pattern is \ooo */ |
pattern_end)) |
626 |
|
return true; |
627 |
|
c = filename[i]; |
628 |
|
if (c == '.' && *pattern == '@') |
629 |
break; |
break; |
630 |
} |
if (c != '\\') |
631 |
return 0; /* Not matched. */ |
continue; |
632 |
case '*': |
if (filename[i + 1] == '\\') |
633 |
case '@': |
i++; |
634 |
{ |
else if (is_byte_range(filename + i + 1)) |
635 |
int i; |
i += 3; |
636 |
for (i = 0; i <= filename_end - filename; i++) { |
else |
637 |
if (FileMatchesToPattern2(filename + i, filename_end, pattern + 1, pattern_end)) return 1; |
break; /* Bad pattern. */ |
638 |
if ((c = filename[i]) == '.' && *pattern == '@') break; |
} |
639 |
if (c == '\\') { |
return false; /* Not matched. */ |
640 |
if ((c = filename[i + 1]) == '\\') { |
default: |
641 |
i++; /* safe because filename is \\ */ |
j = 0; |
642 |
} else if (c >= '0' && c <= '3' && (c = filename[i + 2]) >= '0' && c <= '7' && (c = filename[i + 3]) >= '0' && c <= '7') { |
c = *pattern; |
643 |
i += 3; /* safe because filename is \ooo */ |
if (c == '$') { |
644 |
} else { |
while (is_decimal(filename[j])) |
645 |
break; /* Bad pattern. */ |
j++; |
646 |
} |
} else if (c == 'X') { |
647 |
} |
while (is_hexadecimal(filename[j])) |
648 |
} |
j++; |
649 |
return 0; /* Not matched. */ |
} else if (c == 'A') { |
650 |
} |
while (is_alphabet_char(filename[j])) |
651 |
default: |
j++; |
|
{ |
|
|
int i, j = 0; |
|
|
if ((c = *pattern) == '$') { |
|
|
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. */ |
|
652 |
} |
} |
653 |
filename++; /* safe because *filename != '\0' */ |
for (i = 1; i <= j; i++) { |
654 |
pattern++; /* safe because *pattern != '\0' */ |
if (file_matches_to_pattern2(filename + i, |
655 |
|
filename_end, |
656 |
|
pattern + 1, |
657 |
|
pattern_end)) |
658 |
|
return true; |
659 |
|
} |
660 |
|
return false; /* Not matched or bad pattern. */ |
661 |
} |
} |
662 |
|
filename++; |
663 |
|
pattern++; |
664 |
} |
} |
665 |
while (*pattern == '\\' && (*(pattern + 1) == '*' || *(pattern + 1) == '@')) pattern += 2; |
while (*pattern == '\\' && |
666 |
|
(*(pattern + 1) == '*' || *(pattern + 1) == '@')) |
667 |
|
pattern += 2; |
668 |
return (filename == filename_end && pattern == pattern_end); |
return (filename == filename_end && pattern == pattern_end); |
669 |
} |
} |
670 |
|
|
671 |
static int FileMatchesToPattern(const char *filename, const char *filename_end, const char *pattern, const char *pattern_end) |
/** |
672 |
|
* file_matches_to_pattern - Pattern matching without without '/' character. |
673 |
|
* |
674 |
|
* @filename: The start of string to check. |
675 |
|
* @filename_end: The end of string to check. |
676 |
|
* @pattern: The start of pattern to compare. |
677 |
|
* @pattern_end: The end of pattern to compare. |
678 |
|
* |
679 |
|
* Returns true if @filename matches @pattern, false otherwise. |
680 |
|
*/ |
681 |
|
static bool file_matches_to_pattern(const char *filename, |
682 |
|
const char *filename_end, |
683 |
|
const char *pattern, |
684 |
|
const char *pattern_end) |
685 |
{ |
{ |
686 |
const char *pattern_start = pattern; |
const char *pattern_start = pattern; |
687 |
int first = 1; |
bool first = true; |
688 |
int result; |
bool result; |
689 |
while (pattern < pattern_end - 1) { |
while (pattern < pattern_end - 1) { |
690 |
if (*pattern++ != '\\' || *pattern++ != '-') continue; |
/* Split at "\-" pattern. */ |
691 |
result = FileMatchesToPattern2(filename, filename_end, pattern_start, pattern - 2); |
if (*pattern++ != '\\' || *pattern++ != '-') |
692 |
if (first) result = !result; |
continue; |
693 |
if (result) return 0; |
result = file_matches_to_pattern2(filename, filename_end, |
694 |
first = 0; |
pattern_start, pattern - 2); |
695 |
|
if (first) |
696 |
|
result = !result; |
697 |
|
if (result) |
698 |
|
return false; |
699 |
|
first = false; |
700 |
pattern_start = pattern; |
pattern_start = pattern; |
701 |
} |
} |
702 |
result = FileMatchesToPattern2(filename, filename_end, pattern_start, pattern_end); |
result = file_matches_to_pattern2(filename, filename_end, |
703 |
|
pattern_start, pattern_end); |
704 |
return first ? result : !result; |
return first ? result : !result; |
705 |
} |
} |
706 |
|
|
707 |
/* |
/** |
708 |
* Check whether the given pathname matches to the given pattern. |
* ccs_path_matches_pattern - Check whether the given filename matches the given pattern. |
709 |
* Returns nonzero if matches, zero otherwise. |
* @filename: The filename to check. |
710 |
* |
* @pattern: The pattern to compare. |
711 |
* The following patterns are available. |
* |
712 |
* \\ \ itself. |
* Returns true if matches, false otherwise. |
713 |
* \ooo Octal representation of a byte. |
* |
714 |
* \* More than or equals to 0 character other than '/'. |
* The following patterns are available. |
715 |
* \@ More than or equals to 0 character other than '/' or '.'. |
* \\ \ itself. |
716 |
* \? 1 byte character other than '/'. |
* \ooo Octal representation of a byte. |
717 |
* \$ More than or equals to 1 decimal digit. |
* \* More than or equals to 0 character other than '/'. |
718 |
* \+ 1 decimal digit. |
* \@ More than or equals to 0 character other than '/' or '.'. |
719 |
* \X More than or equals to 1 hexadecimal digit. |
* \? 1 byte character other than '/'. |
720 |
* \x 1 hexadecimal digit. |
* \$ More than or equals to 1 decimal digit. |
721 |
* \A More than or equals to 1 alphabet character. |
* \+ 1 decimal digit. |
722 |
* \a 1 alphabet character. |
* \X More than or equals to 1 hexadecimal digit. |
723 |
* \- Subtraction operator. |
* \x 1 hexadecimal digit. |
724 |
*/ |
* \A More than or equals to 1 alphabet character. |
725 |
|
* \a 1 alphabet character. |
726 |
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. |
|
727 |
*/ |
*/ |
728 |
int io_printf(struct io_buffer *head, const char *fmt, ...) |
bool ccs_path_matches_pattern(const struct path_info *filename, |
729 |
|
const struct path_info *pattern) |
730 |
|
{ |
731 |
|
/* |
732 |
|
if (!filename || !pattern) |
733 |
|
return false; |
734 |
|
*/ |
735 |
|
const char *f = filename->name; |
736 |
|
const char *p = pattern->name; |
737 |
|
const int len = pattern->const_len; |
738 |
|
/* If @pattern doesn't contain pattern, I can use strcmp(). */ |
739 |
|
if (!pattern->is_patterned) |
740 |
|
return !ccs_pathcmp(filename, pattern); |
741 |
|
/* Dont compare if the number of '/' differs. */ |
742 |
|
if (filename->depth != pattern->depth) |
743 |
|
return false; |
744 |
|
/* Compare the initial length without patterns. */ |
745 |
|
if (strncmp(f, p, len)) |
746 |
|
return false; |
747 |
|
f += len; |
748 |
|
p += len; |
749 |
|
/* Main loop. Compare each directory component. */ |
750 |
|
while (*f && *p) { |
751 |
|
const char *f_delimiter = strchr(f, '/'); |
752 |
|
const char *p_delimiter = strchr(p, '/'); |
753 |
|
if (!f_delimiter) |
754 |
|
f_delimiter = strchr(f, '\0'); |
755 |
|
if (!p_delimiter) |
756 |
|
p_delimiter = strchr(p, '\0'); |
757 |
|
if (!file_matches_to_pattern(f, f_delimiter, p, p_delimiter)) |
758 |
|
return false; |
759 |
|
f = f_delimiter; |
760 |
|
if (*f) |
761 |
|
f++; |
762 |
|
p = p_delimiter; |
763 |
|
if (*p) |
764 |
|
p++; |
765 |
|
} |
766 |
|
/* Ignore trailing "\*" and "\@" in @pattern. */ |
767 |
|
while (*p == '\\' && |
768 |
|
(*(p + 1) == '*' || *(p + 1) == '@')) |
769 |
|
p += 2; |
770 |
|
return (!*f && !*p); |
771 |
|
} |
772 |
|
|
773 |
|
/** |
774 |
|
* ccs_io_printf - Transactional printf() to "struct ccs_io_buffer" structure. |
775 |
|
* |
776 |
|
* @head: Pointer to "struct ccs_io_buffer". |
777 |
|
* @fmt: The printf()'s format string, followed by parameters. |
778 |
|
* |
779 |
|
* Returns true on success, false otherwise. |
780 |
|
* |
781 |
|
* The snprintf() will truncate, but ccs_io_printf() won't. |
782 |
|
*/ |
783 |
|
bool ccs_io_printf(struct ccs_io_buffer *head, const char *fmt, ...) |
784 |
{ |
{ |
785 |
va_list args; |
va_list args; |
786 |
int len, pos = head->read_avail, size = head->readbuf_size - pos; |
int len; |
787 |
if (size <= 0) return -ENOMEM; |
int pos = head->read_avail; |
788 |
|
int size = head->readbuf_size - pos; |
789 |
|
if (size <= 0) |
790 |
|
return false; |
791 |
va_start(args, fmt); |
va_start(args, fmt); |
792 |
len = vsnprintf(head->read_buf + pos, size, fmt, args); |
len = vsnprintf(head->read_buf + pos, size, fmt, args); |
793 |
va_end(args); |
va_end(args); |
794 |
if (pos + len >= head->readbuf_size) return -ENOMEM; |
if (pos + len >= head->readbuf_size) |
795 |
|
return false; |
796 |
head->read_avail += len; |
head->read_avail += len; |
797 |
return 0; |
return true; |
798 |
} |
} |
799 |
|
|
800 |
/* |
/** |
801 |
* Get realpath() of current process. |
* ccs_get_exe - Get ccs_realpath() of current process. |
802 |
* This function uses ccs_alloc(), so caller must ccs_free() if this function didn't return NULL. |
* |
803 |
|
* Returns the ccs_realpath() of current process on success, NULL otherwise. |
804 |
|
* |
805 |
|
* This function uses ccs_alloc(), so the caller must ccs_free() |
806 |
|
* if this function didn't return NULL. |
807 |
*/ |
*/ |
808 |
const char *GetEXE(void) |
const char *ccs_get_exe(void) |
809 |
{ |
{ |
810 |
struct mm_struct *mm = current->mm; |
struct mm_struct *mm = current->mm; |
811 |
struct vm_area_struct *vma; |
struct vm_area_struct *vma; |
812 |
const char *cp = NULL; |
const char *cp = NULL; |
813 |
if (!mm) return NULL; |
if (!mm) |
814 |
|
return NULL; |
815 |
down_read(&mm->mmap_sem); |
down_read(&mm->mmap_sem); |
816 |
for (vma = mm->mmap; vma; vma = vma->vm_next) { |
for (vma = mm->mmap; vma; vma = vma->vm_next) { |
817 |
if ((vma->vm_flags & VM_EXECUTABLE) && vma->vm_file) { |
if ((vma->vm_flags & VM_EXECUTABLE) && vma->vm_file) { |
818 |
cp = realpath_from_dentry(vma->vm_file->f_dentry, vma->vm_file->f_vfsmnt); |
cp = ccs_realpath_from_dentry(vma->vm_file->f_dentry, |
819 |
|
vma->vm_file->f_vfsmnt); |
820 |
break; |
break; |
821 |
} |
} |
822 |
} |
} |
824 |
return cp; |
return cp; |
825 |
} |
} |
826 |
|
|
827 |
const char *GetMSG(const bool is_enforce) |
/** |
828 |
|
* ccs_get_msg - Get warning message. |
829 |
|
* |
830 |
|
* @is_enforce: Is it enforcing mode? |
831 |
|
* |
832 |
|
* Returns "ERROR" or "WARNING". |
833 |
|
*/ |
834 |
|
const char *ccs_get_msg(const bool is_enforce) |
835 |
{ |
{ |
836 |
if (is_enforce) return "ERROR"; else return "WARNING"; |
if (is_enforce) |
837 |
|
return "ERROR"; |
838 |
|
else |
839 |
|
return "WARNING"; |
840 |
} |
} |
841 |
|
|
842 |
const char *GetAltExec(void) |
/** |
843 |
|
* ccs_check_flags_no_sleep_check - Check mode for specified functionality. |
844 |
|
* |
845 |
|
* @index: The functionality to check mode. |
846 |
|
* |
847 |
|
* Returns the mode of specified functionality. |
848 |
|
*/ |
849 |
|
unsigned int ccs_check_flags_no_sleep_check(const u8 index) |
850 |
{ |
{ |
851 |
const u8 profile = current->domain_info->profile; |
const u8 profile = current->domain_info->profile; |
852 |
const struct path_info *alt_exec = profile_ptr[profile] ? profile_ptr[profile]->alt_exec : NULL; |
return sbin_init_started && index < CCS_MAX_CONTROL_INDEX |
853 |
return alt_exec ? alt_exec->name : NULL; |
#if MAX_PROFILES != 256 |
854 |
|
&& profile < MAX_PROFILES |
855 |
|
#endif |
856 |
|
&& profile_ptr[profile] ? |
857 |
|
profile_ptr[profile]->value[index] : 0; |
858 |
} |
} |
859 |
|
|
860 |
/************************* DOMAIN POLICY HANDLER *************************/ |
/** |
861 |
|
* sleep_check - Check whether it is permitted to do operations that may sleep. |
862 |
|
* |
863 |
|
* Returns true if it is permitted to do operations that may sleep, |
864 |
|
* false otherwise. |
865 |
|
* |
866 |
|
* TOMOYO Linux supports interactive enforcement that lets processes |
867 |
|
* wait for the administrator's decision. |
868 |
|
* All hooks but the one for ccs_may_autobind() are inserted where |
869 |
|
* it is permitted to do operations that may sleep. |
870 |
|
* Thus, this warning should not happen. |
871 |
|
*/ |
872 |
|
static bool sleep_check(void) |
873 |
|
{ |
874 |
|
static u8 count = 20; |
875 |
|
if (likely(!in_interrupt())) |
876 |
|
return true; |
877 |
|
if (count) { |
878 |
|
count--; |
879 |
|
printk(KERN_ERR "BUG: sleeping function called " |
880 |
|
"from invalid context.\n"); |
881 |
|
dump_stack(); |
882 |
|
} |
883 |
|
return false; |
884 |
|
} |
885 |
|
|
886 |
/* Check whether the given access control is enabled. */ |
/** |
887 |
unsigned int CheckCCSFlags(const u8 index) |
* ccs_check_flags - Check mode for specified functionality. |
888 |
|
* |
889 |
|
* @index: The functionality to check mode. |
890 |
|
* |
891 |
|
* Returns the mode of specified functionality. |
892 |
|
*/ |
893 |
|
unsigned int ccs_check_flags(const u8 index) |
894 |
|
{ |
895 |
|
return sleep_check() ? ccs_check_flags_no_sleep_check(index) : 0; |
896 |
|
} |
897 |
|
|
898 |
|
#ifdef CONFIG_TOMOYO |
899 |
|
/** |
900 |
|
* ccs_check_capability_flags - Check mode for specified capability. |
901 |
|
* |
902 |
|
* @index: The capability to check mode. |
903 |
|
* |
904 |
|
* Returns the mode of specified capability. |
905 |
|
*/ |
906 |
|
u8 ccs_check_capability_flags(const u8 index) |
907 |
{ |
{ |
908 |
const u8 profile = current->domain_info->profile; |
const u8 profile = current->domain_info->profile; |
909 |
return sbin_init_started && index < CCS_MAX_CONTROL_INDEX |
return sbin_init_started && index < TOMOYO_MAX_CAPABILITY_INDEX |
910 |
#if MAX_PROFILES != 256 |
#if MAX_PROFILES != 256 |
911 |
&& profile < MAX_PROFILES |
&& profile < MAX_PROFILES |
912 |
#endif |
#endif |
913 |
&& profile_ptr[profile] ? profile_ptr[profile]->value[index] : 0; |
&& sleep_check() |
914 |
|
&& profile_ptr[profile] ? |
915 |
|
profile_ptr[profile]->capability_value[index] : 0; |
916 |
} |
} |
917 |
|
|
918 |
bool TomoyoVerboseMode(void) |
/** |
919 |
|
* ccs_cap2keyword - Convert capability operation to capability name. |
920 |
|
* |
921 |
|
* @operation: The capability index. |
922 |
|
* |
923 |
|
* Returns the name of the specified capability's name. |
924 |
|
*/ |
925 |
|
const char *ccs_cap2keyword(const u8 operation) |
926 |
{ |
{ |
927 |
return CheckCCSFlags(CCS_TOMOYO_VERBOSE) != 0; |
return operation < TOMOYO_MAX_CAPABILITY_INDEX |
928 |
|
? capability_control_keyword[operation] : NULL; |
929 |
} |
} |
930 |
|
|
931 |
bool CheckDomainQuota(struct domain_info * const domain) |
#endif |
932 |
|
|
933 |
|
/** |
934 |
|
* ccs_verbose_mode - Check whether TOMOYO is verbose mode. |
935 |
|
* |
936 |
|
* Returns true if domain policy violation warning should be printed to |
937 |
|
* console. |
938 |
|
*/ |
939 |
|
bool ccs_verbose_mode(void) |
940 |
|
{ |
941 |
|
return ccs_check_flags(CCS_TOMOYO_VERBOSE) != 0; |
942 |
|
} |
943 |
|
|
944 |
|
/** |
945 |
|
* ccs_check_domain_quota - Check for domain's quota. |
946 |
|
* |
947 |
|
* @domain: Pointer to "struct domain_info". |
948 |
|
* |
949 |
|
* Returns true if the domain is not exceeded quota, false otherwise. |
950 |
|
*/ |
951 |
|
bool ccs_check_domain_quota(struct domain_info * const domain) |
952 |
{ |
{ |
953 |
unsigned int count = 0; |
unsigned int count = 0; |
954 |
struct acl_info *ptr; |
struct acl_info *ptr; |
955 |
if (!domain) return 1; |
if (!domain) |
956 |
|
return true; |
957 |
list1_for_each_entry(ptr, &domain->acl_info_list, list) { |
list1_for_each_entry(ptr, &domain->acl_info_list, list) { |
958 |
if (!ptr->is_deleted) count++; |
if (ptr->type & ACL_DELETED) |
959 |
|
continue; |
960 |
|
switch (ccs_acl_type2(ptr)) { |
961 |
|
struct single_path_acl_record *acl1; |
962 |
|
struct double_path_acl_record *acl2; |
963 |
|
u16 perm; |
964 |
|
case TYPE_SINGLE_PATH_ACL: |
965 |
|
acl1 = container_of(ptr, struct single_path_acl_record, |
966 |
|
head); |
967 |
|
perm = acl1->perm; |
968 |
|
if (perm & (1 << TYPE_EXECUTE_ACL)) |
969 |
|
count++; |
970 |
|
if (perm & |
971 |
|
((1 << TYPE_READ_ACL) | (1 << TYPE_WRITE_ACL))) |
972 |
|
count++; |
973 |
|
if (perm & (1 << TYPE_CREATE_ACL)) |
974 |
|
count++; |
975 |
|
if (perm & (1 << TYPE_UNLINK_ACL)) |
976 |
|
count++; |
977 |
|
if (perm & (1 << TYPE_MKDIR_ACL)) |
978 |
|
count++; |
979 |
|
if (perm & (1 << TYPE_RMDIR_ACL)) |
980 |
|
count++; |
981 |
|
if (perm & (1 << TYPE_MKFIFO_ACL)) |
982 |
|
count++; |
983 |
|
if (perm & (1 << TYPE_MKSOCK_ACL)) |
984 |
|
count++; |
985 |
|
if (perm & (1 << TYPE_MKBLOCK_ACL)) |
986 |
|
count++; |
987 |
|
if (perm & (1 << TYPE_MKCHAR_ACL)) |
988 |
|
count++; |
989 |
|
if (perm & (1 << TYPE_TRUNCATE_ACL)) |
990 |
|
count++; |
991 |
|
if (perm & (1 << TYPE_SYMLINK_ACL)) |
992 |
|
count++; |
993 |
|
if (perm & (1 << TYPE_REWRITE_ACL)) |
994 |
|
count++; |
995 |
|
break; |
996 |
|
case TYPE_DOUBLE_PATH_ACL: |
997 |
|
acl2 = container_of(ptr, struct double_path_acl_record, |
998 |
|
head); |
999 |
|
perm = acl2->perm; |
1000 |
|
if (perm & (1 << TYPE_LINK_ACL)) |
1001 |
|
count++; |
1002 |
|
if (perm & (1 << TYPE_RENAME_ACL)) |
1003 |
|
count++; |
1004 |
|
break; |
1005 |
|
case TYPE_EXECUTE_HANDLER: |
1006 |
|
case TYPE_DENIED_EXECUTE_HANDLER: |
1007 |
|
break; |
1008 |
|
default: |
1009 |
|
count++; |
1010 |
|
} |
1011 |
} |
} |
1012 |
if (count < CheckCCSFlags(CCS_TOMOYO_MAX_ACCEPT_ENTRY)) return 1; |
if (count < ccs_check_flags(CCS_TOMOYO_MAX_ACCEPT_ENTRY)) |
1013 |
|
return true; |
1014 |
if (!domain->quota_warned) { |
if (!domain->quota_warned) { |
1015 |
domain->quota_warned = 1; |
domain->quota_warned = true; |
1016 |
printk("TOMOYO-WARNING: Domain '%s' has so many ACLs to hold. Stopped learning mode.\n", domain->domainname->name); |
printk(KERN_WARNING "TOMOYO-WARNING: " |
1017 |
|
"Domain '%s' has so many ACLs to hold. " |
1018 |
|
"Stopped learning mode.\n", domain->domainname->name); |
1019 |
} |
} |
1020 |
return 0; |
return false; |
1021 |
} |
} |
1022 |
|
|
1023 |
static struct profile *FindOrAssignNewProfile(const unsigned int profile) |
/** |
1024 |
|
* ccs_find_or_assign_new_profile - Create a new profile. |
1025 |
|
* |
1026 |
|
* @profile: Profile number to create. |
1027 |
|
* |
1028 |
|
* Returns pointer to "struct profile" on success, NULL otherwise. |
1029 |
|
*/ |
1030 |
|
static struct profile *ccs_find_or_assign_new_profile(const unsigned int |
1031 |
|
profile) |
1032 |
{ |
{ |
1033 |
static DEFINE_MUTEX(profile_lock); |
static DEFINE_MUTEX(profile_lock); |
1034 |
struct profile *ptr = NULL; |
struct profile *ptr = NULL; |
1035 |
mutex_lock(&profile_lock); |
mutex_lock(&profile_lock); |
1036 |
if (profile < MAX_PROFILES && (ptr = profile_ptr[profile]) == NULL) { |
if (profile < MAX_PROFILES) { |
1037 |
if ((ptr = alloc_element(sizeof(*ptr))) != NULL) { |
ptr = profile_ptr[profile]; |
1038 |
|
if (ptr) |
1039 |
|
goto ok; |
1040 |
|
ptr = ccs_alloc_element(sizeof(*ptr)); |
1041 |
|
if (ptr) { |
1042 |
int i; |
int i; |
1043 |
for (i = 0; i < CCS_MAX_CONTROL_INDEX; i++) ptr->value[i] = ccs_control_array[i].current_value; |
for (i = 0; i < CCS_MAX_CONTROL_INDEX; i++) |
1044 |
|
ptr->value[i] |
1045 |
|
= ccs_control_array[i].current_value; |
1046 |
|
/* |
1047 |
|
* Needn't to initialize "ptr->capability_value" |
1048 |
|
* because they are always 0. |
1049 |
|
*/ |
1050 |
mb(); /* Avoid out-of-order execution. */ |
mb(); /* Avoid out-of-order execution. */ |
1051 |
profile_ptr[profile] = ptr; |
profile_ptr[profile] = ptr; |
1052 |
} |
} |
1053 |
} |
} |
1054 |
|
ok: |
1055 |
mutex_unlock(&profile_lock); |
mutex_unlock(&profile_lock); |
1056 |
return ptr; |
return ptr; |
1057 |
} |
} |
1058 |
|
|
1059 |
/* #define ALT_EXEC */ |
/** |
1060 |
|
* write_profile - Write profile table. |
1061 |
static int SetProfile(struct io_buffer *head) |
* |
1062 |
|
* @head: Pointer to "struct ccs_io_buffer" |
1063 |
|
* |
1064 |
|
* Returns 0 on success, negative value otherwise. |
1065 |
|
*/ |
1066 |
|
static int write_profile(struct ccs_io_buffer *head) |
1067 |
{ |
{ |
1068 |
char *data = head->write_buf; |
char *data = head->write_buf; |
1069 |
unsigned int i, value; |
unsigned int i; |
1070 |
|
unsigned int value; |
1071 |
char *cp; |
char *cp; |
1072 |
struct profile *profile; |
struct profile *profile; |
|
if (!isRoot()) return -EPERM; |
|
1073 |
i = simple_strtoul(data, &cp, 10); |
i = simple_strtoul(data, &cp, 10); |
1074 |
if (data != cp) { |
if (data != cp) { |
1075 |
if (*cp != '-') return -EINVAL; |
if (*cp != '-') |
1076 |
data= cp + 1; |
return -EINVAL; |
1077 |
|
data = cp + 1; |
1078 |
} |
} |
1079 |
profile = FindOrAssignNewProfile(i); |
profile = ccs_find_or_assign_new_profile(i); |
1080 |
if (!profile) return -EINVAL; |
if (!profile) |
1081 |
|
return -EINVAL; |
1082 |
cp = strchr(data, '='); |
cp = strchr(data, '='); |
1083 |
if (!cp) return -EINVAL; |
if (!cp) |
1084 |
|
return -EINVAL; |
1085 |
*cp = '\0'; |
*cp = '\0'; |
1086 |
UpdateCounter(CCS_UPDATES_COUNTER_PROFILE); |
ccs_update_counter(CCS_UPDATES_COUNTER_PROFILE); |
1087 |
if (strcmp(data, ccs_control_array[CCS_PROFILE_COMMENT].keyword) == 0) { |
if (!strcmp(data, "COMMENT")) { |
1088 |
profile->comment = SaveName(cp + 1); |
profile->comment = ccs_save_name(cp + 1); |
1089 |
return 0; |
return 0; |
1090 |
} |
} |
|
#ifdef ALT_EXEC |
|
1091 |
#ifdef CONFIG_TOMOYO |
#ifdef CONFIG_TOMOYO |
1092 |
if (strcmp(data, ccs_control_array[CCS_TOMOYO_ALT_EXEC].keyword) == 0) { |
if (str_starts(&data, KEYWORD_MAC_FOR_CAPABILITY)) { |
1093 |
cp++; |
if (sscanf(cp + 1, "%u", &value) != 1) { |
1094 |
if (*cp && !IsCorrectPath(cp, 1, -1, -1, __FUNCTION__)) cp = ""; |
for (i = 0; i < 4; i++) { |
1095 |
profile->alt_exec = SaveName(cp); |
if (strcmp(cp + 1, mode_4[i])) |
1096 |
return 0; |
continue; |
1097 |
} |
value = i; |
1098 |
#endif |
break; |
1099 |
#endif |
} |
1100 |
if (sscanf(cp + 1, "%u", &value) != 1) return -EINVAL; |
if (i == 4) |
1101 |
#ifdef CONFIG_TOMOYO |
return -EINVAL; |
1102 |
if (strncmp(data, KEYWORD_MAC_FOR_CAPABILITY, KEYWORD_MAC_FOR_CAPABILITY_LEN) == 0) { |
} |
1103 |
return SetCapabilityStatus(data + KEYWORD_MAC_FOR_CAPABILITY_LEN, value, i); |
if (value > 3) |
1104 |
|
value = 3; |
1105 |
|
for (i = 0; i < TOMOYO_MAX_CAPABILITY_INDEX; i++) { |
1106 |
|
if (strcmp(data, capability_control_keyword[i])) |
1107 |
|
continue; |
1108 |
|
profile->capability_value[i] = value; |
1109 |
|
return 0; |
1110 |
|
} |
1111 |
|
return -EINVAL; |
1112 |
} |
} |
1113 |
#endif |
#endif |
1114 |
for (i = 0; i < CCS_MAX_CONTROL_INDEX; i++) { |
for (i = 0; i < CCS_MAX_CONTROL_INDEX; i++) { |
1115 |
if (strcmp(data, ccs_control_array[i].keyword)) continue; |
if (strcmp(data, ccs_control_array[i].keyword)) |
1116 |
if (value > ccs_control_array[i].max_value) value = ccs_control_array[i].max_value; |
continue; |
1117 |
|
if (sscanf(cp + 1, "%u", &value) != 1) { |
1118 |
|
int j; |
1119 |
|
const char **modes; |
1120 |
|
switch (i) { |
1121 |
|
case CCS_SAKURA_RESTRICT_AUTOBIND: |
1122 |
|
case CCS_TOMOYO_VERBOSE: |
1123 |
|
case CCS_ALLOW_ENFORCE_GRACE: |
1124 |
|
modes = mode_2; |
1125 |
|
break; |
1126 |
|
default: |
1127 |
|
modes = mode_4; |
1128 |
|
break; |
1129 |
|
} |
1130 |
|
for (j = 0; j < 4; j++) { |
1131 |
|
if (strcmp(cp + 1, modes[j])) |
1132 |
|
continue; |
1133 |
|
value = j; |
1134 |
|
break; |
1135 |
|
} |
1136 |
|
if (j == 4) |
1137 |
|
return -EINVAL; |
1138 |
|
} else if (value > ccs_control_array[i].max_value) { |
1139 |
|
value = ccs_control_array[i].max_value; |
1140 |
|
} |
1141 |
|
switch (i) { |
1142 |
|
case CCS_SAKURA_DENY_CONCEAL_MOUNT: |
1143 |
|
case CCS_SAKURA_RESTRICT_UNMOUNT: |
1144 |
|
if (value == 1) |
1145 |
|
value = 2; /* learning mode is not supported. */ |
1146 |
|
} |
1147 |
profile->value[i] = value; |
profile->value[i] = value; |
1148 |
return 0; |
return 0; |
1149 |
} |
} |
1150 |
return -EINVAL; |
return -EINVAL; |
1151 |
} |
} |
1152 |
|
|
1153 |
static int ReadProfile(struct io_buffer *head) |
/** |
1154 |
|
* read_profile - Read profile table. |
1155 |
|
* |
1156 |
|
* @head: Pointer to "struct ccs_io_buffer" |
1157 |
|
* |
1158 |
|
* Returns 0. |
1159 |
|
*/ |
1160 |
|
static int read_profile(struct ccs_io_buffer *head) |
1161 |
{ |
{ |
1162 |
if (!head->read_eof) { |
static const int total |
1163 |
if (!isRoot()) return -EPERM; |
= CCS_MAX_CONTROL_INDEX + TOMOYO_MAX_CAPABILITY_INDEX + 1; |
1164 |
if (!head->read_var2) { |
int step; |
1165 |
int step; |
if (head->read_eof) |
1166 |
for (step = head->read_step; step < MAX_PROFILES * CCS_MAX_CONTROL_INDEX; step++) { |
return 0; |
1167 |
const int i = step / CCS_MAX_CONTROL_INDEX, j = step % CCS_MAX_CONTROL_INDEX; |
for (step = head->read_step; step < MAX_PROFILES * total; step++) { |
1168 |
const struct profile *profile = profile_ptr[i]; |
const u8 index = step / total; |
1169 |
head->read_step = step; |
u8 type = step % total; |
1170 |
if (!profile) continue; |
const struct profile *profile = profile_ptr[index]; |
1171 |
switch (j) { |
head->read_step = step; |
1172 |
case -1: /* Dummy */ |
if (!profile) |
1173 |
|
continue; |
1174 |
|
#if !defined(CONFIG_SAKURA) || !defined(CONFIG_TOMOYO) |
1175 |
|
switch (type) { |
1176 |
#ifndef CONFIG_SAKURA |
#ifndef CONFIG_SAKURA |
1177 |
case CCS_SAKURA_DENY_CONCEAL_MOUNT: |
case CCS_SAKURA_DENY_CONCEAL_MOUNT: |
1178 |
case CCS_SAKURA_RESTRICT_CHROOT: |
case CCS_SAKURA_RESTRICT_CHROOT: |
1179 |
case CCS_SAKURA_RESTRICT_MOUNT: |
case CCS_SAKURA_RESTRICT_MOUNT: |
1180 |
case CCS_SAKURA_RESTRICT_UNMOUNT: |
case CCS_SAKURA_RESTRICT_UNMOUNT: |
1181 |
case CCS_SAKURA_RESTRICT_PIVOT_ROOT: |
case CCS_SAKURA_RESTRICT_PIVOT_ROOT: |
1182 |
case CCS_SAKURA_RESTRICT_AUTOBIND: |
case CCS_SAKURA_RESTRICT_AUTOBIND: |
1183 |
#endif |
#endif |
1184 |
#ifndef CONFIG_TOMOYO |
#ifndef CONFIG_TOMOYO |
1185 |
case CCS_TOMOYO_MAC_FOR_FILE: |
case CCS_TOMOYO_MAC_FOR_FILE: |
1186 |
case CCS_TOMOYO_MAC_FOR_ARGV0: |
case CCS_TOMOYO_MAC_FOR_ARGV0: |
1187 |
case CCS_TOMOYO_MAC_FOR_ENV: |
case CCS_TOMOYO_MAC_FOR_ENV: |
1188 |
case CCS_TOMOYO_MAC_FOR_NETWORK: |
case CCS_TOMOYO_MAC_FOR_NETWORK: |
1189 |
case CCS_TOMOYO_MAC_FOR_SIGNAL: |
case CCS_TOMOYO_MAC_FOR_SIGNAL: |
1190 |
case CCS_TOMOYO_MAX_ACCEPT_ENTRY: |
case CCS_TOMOYO_MAX_ACCEPT_ENTRY: |
1191 |
case CCS_TOMOYO_MAX_GRANT_LOG: |
case CCS_TOMOYO_MAX_GRANT_LOG: |
1192 |
case CCS_TOMOYO_MAX_REJECT_LOG: |
case CCS_TOMOYO_MAX_REJECT_LOG: |
1193 |
case CCS_TOMOYO_VERBOSE: |
case CCS_TOMOYO_VERBOSE: |
1194 |
#endif |
#endif |
1195 |
#ifndef ALT_EXEC |
continue; |
1196 |
case CCS_TOMOYO_ALT_EXEC: |
} |
1197 |
case CCS_SLEEP_PERIOD: |
#endif |
1198 |
#endif |
if (!type) { /* Print profile' comment tag. */ |
1199 |
continue; |
if (!ccs_io_printf(head, "%u-COMMENT=%s\n", |
1200 |
} |
index, profile->comment ? |
1201 |
if (j == CCS_PROFILE_COMMENT) { |
profile->comment->name : "")) |
1202 |
if (io_printf(head, "%u-%s=%s\n", i, ccs_control_array[CCS_PROFILE_COMMENT].keyword, profile->comment ? profile->comment->name : "")) break; |
break; |
1203 |
} else if (j == CCS_TOMOYO_ALT_EXEC) { |
continue; |
|
const struct path_info *alt_exec = profile->alt_exec; |
|
|
if (io_printf(head, "%u-%s=%s\n", i, ccs_control_array[CCS_TOMOYO_ALT_EXEC].keyword, alt_exec ? alt_exec->name : "")) break; |
|
|
} else { |
|
|
if (io_printf(head, "%u-%s=%u\n", i, ccs_control_array[j].keyword, profile->value[j])) break; |
|
|
} |
|
|
} |
|
|
if (step == MAX_PROFILES * CCS_MAX_CONTROL_INDEX) { |
|
|
head->read_var2 = (void *) ""; |
|
|
head->read_step = 0; |
|
|
} |
|
1204 |
} |
} |
1205 |
if (head->read_var2) { |
type--; |
1206 |
|
if (type >= CCS_MAX_CONTROL_INDEX) { |
1207 |
#ifdef CONFIG_TOMOYO |
#ifdef CONFIG_TOMOYO |
1208 |
if (ReadCapabilityStatus(head) == 0) |
const int i = type - CCS_MAX_CONTROL_INDEX; |
1209 |
|
const u8 value = profile->capability_value[i]; |
1210 |
|
if (!ccs_io_printf(head, |
1211 |
|
"%u-" KEYWORD_MAC_FOR_CAPABILITY |
1212 |
|
"%s=%s\n", index, |
1213 |
|
capability_control_keyword[i], |
1214 |
|
mode_4[value])) |
1215 |
|
break; |
1216 |
#endif |
#endif |
1217 |
head->read_eof = 1; |
} else { |
1218 |
|
const unsigned int value = profile->value[type]; |
1219 |
|
const char **modes = NULL; |
1220 |
|
const char *keyword = ccs_control_array[type].keyword; |
1221 |
|
switch (ccs_control_array[type].max_value) { |
1222 |
|
case 3: |
1223 |
|
modes = mode_4; |
1224 |
|
break; |
1225 |
|
case 1: |
1226 |
|
modes = mode_2; |
1227 |
|
break; |
1228 |
|
} |
1229 |
|
if (modes) { |
1230 |
|
if (!ccs_io_printf(head, "%u-%s=%s\n", index, |
1231 |
|
keyword, modes[value])) |
1232 |
|
break; |
1233 |
|
} else { |
1234 |
|
if (!ccs_io_printf(head, "%u-%s=%u\n", index, |
1235 |
|
keyword, value)) |
1236 |
|
break; |
1237 |
|
} |
1238 |
} |
} |
1239 |
} |
} |
1240 |
|
if (step == MAX_PROFILES * total) |
1241 |
|
head->read_eof = true; |
1242 |
return 0; |
return 0; |
1243 |
} |
} |
1244 |
|
|
1245 |
/************************* POLICY MANAGER HANDLER *************************/ |
/* Structure for policy manager. */ |
|
|
|
1246 |
struct policy_manager_entry { |
struct policy_manager_entry { |
1247 |
struct list1_head list; |
struct list1_head list; |
1248 |
|
/* A path to program or a domainname. */ |
1249 |
const struct path_info *manager; |
const struct path_info *manager; |
1250 |
bool is_domain; |
bool is_domain; /* True if manager is a domainname. */ |
1251 |
bool is_deleted; |
bool is_deleted; /* True if this entry is deleted. */ |
1252 |
}; |
}; |
1253 |
|
|
1254 |
|
/* The list for "struct policy_manager_entry". */ |
1255 |
static LIST1_HEAD(policy_manager_list); |
static LIST1_HEAD(policy_manager_list); |
1256 |
|
|
1257 |
static int AddManagerEntry(const char *manager, const bool is_delete) |
/** |
1258 |
|
* update_manager_entry - Add a manager entry. |
1259 |
|
* |
1260 |
|
* @manager: The path to manager or the domainnamme. |
1261 |
|
* @is_delete: True if it is a delete request. |
1262 |
|
* |
1263 |
|
* Returns 0 on success, negative value otherwise. |
1264 |
|
*/ |
1265 |
|
static int update_manager_entry(const char *manager, const bool is_delete) |
1266 |
{ |
{ |
1267 |
struct policy_manager_entry *new_entry, *ptr; |
struct policy_manager_entry *new_entry; |
1268 |
|
struct policy_manager_entry *ptr; |
1269 |
static DEFINE_MUTEX(lock); |
static DEFINE_MUTEX(lock); |
1270 |
const struct path_info *saved_manager; |
const struct path_info *saved_manager; |
1271 |
int error = -ENOMEM; |
int error = -ENOMEM; |
1272 |
bool is_domain = 0; |
bool is_domain = false; |
1273 |
if (!isRoot()) return -EPERM; |
if (ccs_is_domain_def(manager)) { |
1274 |
if (IsDomainDef(manager)) { |
if (!ccs_is_correct_domain(manager, __func__)) |
1275 |
if (!IsCorrectDomain(manager, __FUNCTION__)) return -EINVAL; |
return -EINVAL; |
1276 |
is_domain = 1; |
is_domain = true; |
1277 |
} else { |
} else { |
1278 |
if (!IsCorrectPath(manager, 1, -1, -1, __FUNCTION__)) return -EINVAL; |
if (!ccs_is_correct_path(manager, 1, -1, -1, __func__)) |
1279 |
|
return -EINVAL; |
1280 |
} |
} |
1281 |
if ((saved_manager = SaveName(manager)) == NULL) return -ENOMEM; |
saved_manager = ccs_save_name(manager); |
1282 |
|
if (!saved_manager) |
1283 |
|
return -ENOMEM; |
1284 |
mutex_lock(&lock); |
mutex_lock(&lock); |
1285 |
list1_for_each_entry(ptr, &policy_manager_list, list) { |
list1_for_each_entry(ptr, &policy_manager_list, list) { |
1286 |
if (ptr->manager == saved_manager) { |
if (ptr->manager != saved_manager) |
1287 |
ptr->is_deleted = is_delete; |
continue; |
1288 |
error = 0; |
ptr->is_deleted = is_delete; |
1289 |
goto out; |
error = 0; |
1290 |
} |
goto out; |
1291 |
} |
} |
1292 |
if (is_delete) { |
if (is_delete) { |
1293 |
error = -ENOENT; |
error = -ENOENT; |
1294 |
goto out; |
goto out; |
1295 |
} |
} |
1296 |
if ((new_entry = alloc_element(sizeof(*new_entry))) == NULL) goto out; |
new_entry = ccs_alloc_element(sizeof(*new_entry)); |
1297 |
|
if (!new_entry) |
1298 |
|
goto out; |
1299 |
new_entry->manager = saved_manager; |
new_entry->manager = saved_manager; |
1300 |
new_entry->is_domain = is_domain; |
new_entry->is_domain = is_domain; |
1301 |
list1_add_tail_mb(&new_entry->list, &policy_manager_list); |
list1_add_tail_mb(&new_entry->list, &policy_manager_list); |
1302 |
error = 0; |
error = 0; |
1303 |
out: |
out: |
1304 |
mutex_unlock(&lock); |
mutex_unlock(&lock); |
1305 |
if (!error) UpdateCounter(CCS_UPDATES_COUNTER_MANAGER); |
if (!error) |
1306 |
|
ccs_update_counter(CCS_UPDATES_COUNTER_MANAGER); |
1307 |
return error; |
return error; |
1308 |
} |
} |
1309 |
|
|
1310 |
static int AddManagerPolicy(struct io_buffer *head) |
/** |
1311 |
|
* write_manager_policy - Write manager policy. |
1312 |
|
* |
1313 |
|
* @head: Pointer to "struct ccs_io_buffer" |
1314 |
|
* |
1315 |
|
* Returns 0 on success, negative value otherwise. |
1316 |
|
*/ |
1317 |
|
static int write_manager_policy(struct ccs_io_buffer *head) |
1318 |
{ |
{ |
1319 |
const char *data = head->write_buf; |
char *data = head->write_buf; |
1320 |
bool is_delete = 0; |
bool is_delete = str_starts(&data, KEYWORD_DELETE); |
1321 |
if (!isRoot()) return -EPERM; |
if (!strcmp(data, "manage_by_non_root")) { |
1322 |
if (strncmp(data, KEYWORD_DELETE, KEYWORD_DELETE_LEN) == 0) { |
manage_by_non_root = !is_delete; |
1323 |
data += KEYWORD_DELETE_LEN; |
return 0; |
|
is_delete = 1; |
|
1324 |
} |
} |
1325 |
return AddManagerEntry(data, is_delete); |
return update_manager_entry(data, is_delete); |
1326 |
} |
} |
1327 |
|
|
1328 |
static int ReadManagerPolicy(struct io_buffer *head) |
/** |
1329 |
|
* read_manager_policy - Read manager policy. |
1330 |
|
* |
1331 |
|
* @head: Pointer to "struct ccs_io_buffer" |
1332 |
|
* |
1333 |
|
* Returns 0. |
1334 |
|
*/ |
1335 |
|
static int read_manager_policy(struct ccs_io_buffer *head) |
1336 |
{ |
{ |
1337 |
struct list1_head *pos; |
struct list1_head *pos; |
1338 |
if (head->read_eof) return 0; |
if (head->read_eof) |
1339 |
if (!isRoot()) return -EPERM; |
return 0; |
1340 |
list1_for_each_cookie(pos, head->read_var2, &policy_manager_list) { |
list1_for_each_cookie(pos, head->read_var2, &policy_manager_list) { |
1341 |
struct policy_manager_entry *ptr; |
struct policy_manager_entry *ptr; |
1342 |
ptr = list1_entry(pos, struct policy_manager_entry, list); |
ptr = list1_entry(pos, struct policy_manager_entry, list); |
1343 |
if (ptr->is_deleted) continue; |
if (ptr->is_deleted) |
1344 |
if (io_printf(head, "%s\n", ptr->manager->name)) return 0; |
continue; |
1345 |
|
if (!ccs_io_printf(head, "%s\n", ptr->manager->name)) |
1346 |
|
return 0; |
1347 |
} |
} |
1348 |
head->read_eof = 1; |
head->read_eof = true; |
1349 |
return 0; |
return 0; |
1350 |
} |
} |
1351 |
|
|
1352 |
/* Check whether the current process is a policy manager. */ |
/** |
1353 |
static int IsPolicyManager(void) |
* is_policy_manager - Check whether the current process is a policy manager. |
1354 |
|
* |
1355 |
|
* Returns true if the current process is permitted to modify policy |
1356 |
|
* via /proc/ccs/ interface. |
1357 |
|
*/ |
1358 |
|
static bool is_policy_manager(void) |
1359 |
{ |
{ |
1360 |
struct policy_manager_entry *ptr; |
struct policy_manager_entry *ptr; |
1361 |
const char *exe; |
const char *exe; |
1362 |
const struct path_info *domainname = current->domain_info->domainname; |
const struct task_struct *task = current; |
1363 |
bool found = 0; |
const struct path_info *domainname = task->domain_info->domainname; |
1364 |
if (!sbin_init_started) return 1; |
bool found = false; |
1365 |
|
if (!sbin_init_started) |
1366 |
|
return true; |
1367 |
|
if (!manage_by_non_root && (task->uid || task->euid)) |
1368 |
|
return false; |
1369 |
list1_for_each_entry(ptr, &policy_manager_list, list) { |
list1_for_each_entry(ptr, &policy_manager_list, list) { |
1370 |
if (!ptr->is_deleted && ptr->is_domain && !pathcmp(domainname, ptr->manager)) return 1; |
if (!ptr->is_deleted && ptr->is_domain |
1371 |
} |
&& !ccs_pathcmp(domainname, ptr->manager)) |
1372 |
if ((exe = GetEXE()) == NULL) return 0; |
return true; |
1373 |
|
} |
1374 |
|
exe = ccs_get_exe(); |
1375 |
|
if (!exe) |
1376 |
|
return false; |
1377 |
list1_for_each_entry(ptr, &policy_manager_list, list) { |
list1_for_each_entry(ptr, &policy_manager_list, list) { |
1378 |
if (!ptr->is_deleted && !ptr->is_domain && !strcmp(exe, ptr->manager->name)) { |
if (!ptr->is_deleted && !ptr->is_domain |
1379 |
found = 1; |
&& !strcmp(exe, ptr->manager->name)) { |
1380 |
|
found = true; |
1381 |
break; |
break; |
1382 |
} |
} |
1383 |
} |
} |
1384 |
if (!found) { /* Reduce error messages. */ |
if (!found) { /* Reduce error messages. */ |
1385 |
static pid_t last_pid = 0; |
static pid_t last_pid; |
1386 |
const pid_t pid = current->pid; |
const pid_t pid = current->pid; |
1387 |
if (last_pid != pid) { |
if (last_pid != pid) { |
1388 |
printk("%s ( %s ) is not permitted to update policies.\n", domainname->name, exe); |
printk(KERN_WARNING "%s ( %s ) is not permitted to " |
1389 |
|
"update policies.\n", domainname->name, exe); |
1390 |
last_pid = pid; |
last_pid = pid; |
1391 |
} |
} |
1392 |
} |
} |
1396 |
|
|
1397 |
#ifdef CONFIG_TOMOYO |
#ifdef CONFIG_TOMOYO |
1398 |
|
|
1399 |
/************************* DOMAIN POLICY HANDLER *************************/ |
/** |
1400 |
|
* ccs_find_condition_part - Find condition part from the statement. |
1401 |
static char *FindConditionPart(char *data) |
* |
1402 |
|
* @data: String to parse. |
1403 |
|
* |
1404 |
|
* Returns pointer to the condition part if it was found in the statement, |
1405 |
|
* NULL otherwise. |
1406 |
|
*/ |
1407 |
|
static char *ccs_find_condition_part(char *data) |
1408 |
{ |
{ |
1409 |
char *cp = strstr(data, " if "), *cp2; |
char *cp = strstr(data, " if "); |
1410 |
if (cp) { |
if (cp) { |
1411 |
while ((cp2 = strstr(cp + 3, " if ")) != NULL) cp = cp2; |
char *cp2; |
1412 |
|
while ((cp2 = strstr(cp + 3, " if ")) != NULL) |
1413 |
|
cp = cp2; |
1414 |
*cp++ = '\0'; |
*cp++ = '\0'; |
1415 |
|
} else { |
1416 |
|
cp = strstr(data, " ; set "); |
1417 |
|
if (cp) |
1418 |
|
*cp++ = '\0'; |
1419 |
} |
} |
1420 |
return cp; |
return cp; |
1421 |
} |
} |
1422 |
|
|
1423 |
static int AddDomainPolicy(struct io_buffer *head) |
/** |
1424 |
|
* write_domain_policy - Write domain policy. |
1425 |
|
* |
1426 |
|
* @head: Pointer to "struct ccs_io_buffer". |
1427 |
|
* |
1428 |
|
* Returns 0 on success, negative value otherwise. |
1429 |
|
*/ |
1430 |
|
static int write_domain_policy(struct ccs_io_buffer *head) |
1431 |
{ |
{ |
1432 |
char *data = head->write_buf; |
char *data = head->write_buf; |
1433 |
struct domain_info *domain = head->write_var1; |
struct domain_info *domain = head->write_var1; |
1434 |
bool is_delete = 0, is_select = 0, is_undelete = 0; |
bool is_delete = false; |
1435 |
|
bool is_select = false; |
1436 |
|
bool is_undelete = false; |
1437 |
unsigned int profile; |
unsigned int profile; |
1438 |
const struct condition_list *cond = NULL; |
const struct condition_list *cond = NULL; |
1439 |
char *cp; |
char *cp; |
1440 |
if (!isRoot()) return -EPERM; |
if (str_starts(&data, KEYWORD_DELETE)) |
1441 |
if (strncmp(data, KEYWORD_DELETE, KEYWORD_DELETE_LEN) == 0) { |
is_delete = true; |
1442 |
data += KEYWORD_DELETE_LEN; |
else if (str_starts(&data, KEYWORD_SELECT)) |
1443 |
is_delete = 1; |
is_select = true; |
1444 |
} else if (strncmp(data, KEYWORD_SELECT, KEYWORD_SELECT_LEN) == 0) { |
else if (str_starts(&data, KEYWORD_UNDELETE)) |
1445 |
data += KEYWORD_SELECT_LEN; |
is_undelete = true; |
1446 |
is_select = 1; |
if (ccs_is_domain_def(data)) { |
1447 |
} else if (strncmp(data, KEYWORD_UNDELETE, KEYWORD_UNDELETE_LEN) == 0) { |
domain = NULL; |
1448 |
data += KEYWORD_UNDELETE_LEN; |
if (is_delete) |
1449 |
is_undelete = 1; |
ccs_delete_domain(data); |
1450 |
} |
else if (is_select) |
1451 |
UpdateCounter(CCS_UPDATES_COUNTER_DOMAIN_POLICY); |
domain = ccs_find_domain(data); |
1452 |
if (IsDomainDef(data)) { |
else if (is_undelete) |
1453 |
if (is_delete) { |
domain = ccs_undelete_domain(data); |
1454 |
DeleteDomain(data); |
else |
1455 |
domain = NULL; |
domain = ccs_find_or_assign_new_domain(data, 0); |
|
} else if (is_select) { |
|
|
domain = FindDomain(data); |
|
|
} else if (is_undelete) { |
|
|
domain = UndeleteDomain(data); |
|
|
} else { |
|
|
domain = FindOrAssignNewDomain(data, 0); |
|
|
} |
|
1456 |
head->write_var1 = domain; |
head->write_var1 = domain; |
1457 |
|
ccs_update_counter(CCS_UPDATES_COUNTER_DOMAIN_POLICY); |
1458 |
return 0; |
return 0; |
1459 |
} |
} |
1460 |
if (!domain) return -EINVAL; |
if (!domain) |
1461 |
|
return -EINVAL; |
1462 |
|
|
1463 |
if (sscanf(data, KEYWORD_USE_PROFILE "%u", &profile) == 1 && profile < MAX_PROFILES) { |
if (sscanf(data, KEYWORD_USE_PROFILE "%u", &profile) == 1 |
1464 |
if (profile_ptr[profile] || !sbin_init_started) domain->profile = (u8) profile; |
&& profile < MAX_PROFILES) { |
1465 |
|
if (profile_ptr[profile] || !sbin_init_started) |
1466 |
|
domain->profile = (u8) profile; |
1467 |
|
return 0; |
1468 |
|
} |
1469 |
|
if (!strcmp(data, KEYWORD_IGNORE_GLOBAL_ALLOW_READ)) { |
1470 |
|
ccs_set_domain_flag(domain, is_delete, |
1471 |
|
DOMAIN_FLAGS_IGNORE_GLOBAL_ALLOW_READ); |
1472 |
return 0; |
return 0; |
1473 |
} |
} |
1474 |
cp = FindConditionPart(data); |
if (!strcmp(data, KEYWORD_IGNORE_GLOBAL_ALLOW_ENV)) { |
1475 |
if (cp && (cond = FindOrAssignNewCondition(cp)) == NULL) return -EINVAL; |
ccs_set_domain_flag(domain, is_delete, |
1476 |
if (strncmp(data, KEYWORD_ALLOW_CAPABILITY, KEYWORD_ALLOW_CAPABILITY_LEN) == 0) { |
DOMAIN_FLAGS_IGNORE_GLOBAL_ALLOW_ENV); |
1477 |
return AddCapabilityPolicy(data + KEYWORD_ALLOW_CAPABILITY_LEN, domain, cond, is_delete); |
return 0; |
1478 |
} else if (strncmp(data, KEYWORD_ALLOW_NETWORK, KEYWORD_ALLOW_NETWORK_LEN) == 0) { |
} |
1479 |
return AddNetworkPolicy(data + KEYWORD_ALLOW_NETWORK_LEN, domain, cond, is_delete); |
cp = ccs_find_condition_part(data); |
1480 |
} else if (strncmp(data, KEYWORD_ALLOW_SIGNAL, KEYWORD_ALLOW_SIGNAL_LEN) == 0) { |
if (cp) { |
1481 |
return AddSignalPolicy(data + KEYWORD_ALLOW_SIGNAL_LEN, domain, cond, is_delete); |
cond = ccs_find_or_assign_new_condition(cp); |
1482 |
} else if (strncmp(data, KEYWORD_ALLOW_ARGV0, KEYWORD_ALLOW_ARGV0_LEN) == 0) { |
if (!cond) |
1483 |
return AddArgv0Policy(data + KEYWORD_ALLOW_ARGV0_LEN, domain, cond, is_delete); |
return -EINVAL; |
1484 |
} else if (strncmp(data, KEYWORD_ALLOW_ENV, KEYWORD_ALLOW_ENV_LEN) == 0) { |
} |
1485 |
return AddEnvPolicy(data + KEYWORD_ALLOW_ENV_LEN, domain, cond, is_delete); |
if (str_starts(&data, KEYWORD_ALLOW_CAPABILITY)) |
1486 |
|
return ccs_write_capability_policy(data, domain, cond, |
1487 |
|
is_delete); |
1488 |
|
else if (str_starts(&data, KEYWORD_ALLOW_NETWORK)) |
1489 |
|
return ccs_write_network_policy(data, domain, cond, is_delete); |
1490 |
|
else if (str_starts(&data, KEYWORD_ALLOW_SIGNAL)) |
1491 |
|
return ccs_write_signal_policy(data, domain, cond, is_delete); |
1492 |
|
else if (str_starts(&data, KEYWORD_ALLOW_ARGV0)) |
1493 |
|
return ccs_write_argv0_policy(data, domain, cond, is_delete); |
1494 |
|
else if (str_starts(&data, KEYWORD_ALLOW_ENV)) |
1495 |
|
return ccs_write_env_policy(data, domain, cond, is_delete); |
1496 |
|
else |
1497 |
|
return ccs_write_file_policy(data, domain, cond, is_delete); |
1498 |
|
} |
1499 |
|
|
1500 |
|
/** |
1501 |
|
* print_single_path_acl - Print a single path ACL entry. |
1502 |
|
* |
1503 |
|
* @head: Pointer to "struct ccs_io_buffer". |
1504 |
|
* @ptr: Pointer to "struct single_path_acl_record". |
1505 |
|
* @cond: Pointer to "struct condition_list". May be NULL. |
1506 |
|
* |
1507 |
|
* Returns true on success, false otherwise. |
1508 |
|
*/ |
1509 |
|
static bool print_single_path_acl(struct ccs_io_buffer *head, |
1510 |
|
struct single_path_acl_record *ptr, |
1511 |
|
const struct condition_list *cond) |
1512 |
|
{ |
1513 |
|
int pos; |
1514 |
|
u8 bit; |
1515 |
|
const char *atmark = ""; |
1516 |
|
const char *filename; |
1517 |
|
const u16 perm = ptr->perm; |
1518 |
|
if (ptr->u_is_group) { |
1519 |
|
atmark = "@"; |
1520 |
|
filename = ptr->u.group->group_name->name; |
1521 |
} else { |
} else { |
1522 |
return AddFilePolicy(data, domain, cond, is_delete); |
filename = ptr->u.filename->name; |
1523 |
} |
} |
1524 |
return -EINVAL; |
for (bit = head->read_bit; bit < MAX_SINGLE_PATH_OPERATION; bit++) { |
1525 |
|
const char *msg; |
1526 |
|
if (!(perm & (1 << bit))) |
1527 |
|
continue; |
1528 |
|
/* Print "read/write" instead of "read" and "write". */ |
1529 |
|
if ((bit == TYPE_READ_ACL || bit == TYPE_WRITE_ACL) |
1530 |
|
&& (perm & (1 << TYPE_READ_WRITE_ACL))) |
1531 |
|
continue; |
1532 |
|
msg = ccs_sp2keyword(bit); |
1533 |
|
pos = head->read_avail; |
1534 |
|
if (!ccs_io_printf(head, "allow_%s %s%s", msg, |
1535 |
|
atmark, filename) || |
1536 |
|
!ccs_print_condition(head, cond)) |
1537 |
|
goto out; |
1538 |
|
} |
1539 |
|
head->read_bit = 0; |
1540 |
|
return true; |
1541 |
|
out: |
1542 |
|
head->read_bit = bit; |
1543 |
|
head->read_avail = pos; |
1544 |
|
return false; |
1545 |
} |
} |
1546 |
|
|
1547 |
static int ReadDomainPolicy(struct io_buffer *head) |
/** |
1548 |
|
* print_double_path_acl - Print a double path ACL entry. |
1549 |
|
* |
1550 |
|
* @head: Pointer to "struct ccs_io_buffer". |
1551 |
|
* @ptr: Pointer to "struct double_path_acl_record". |
1552 |
|
* @cond: Pointer to "struct condition_list". May be NULL. |
1553 |
|
* |
1554 |
|
* Returns true on success, false otherwise. |
1555 |
|
*/ |
1556 |
|
static bool print_double_path_acl(struct ccs_io_buffer *head, |
1557 |
|
struct double_path_acl_record *ptr, |
1558 |
|
const struct condition_list *cond) |
1559 |
|
{ |
1560 |
|
int pos; |
1561 |
|
const char *atmark1 = ""; |
1562 |
|
const char *atmark2 = ""; |
1563 |
|
const char *filename1; |
1564 |
|
const char *filename2; |
1565 |
|
const u8 perm = ptr->perm; |
1566 |
|
u8 bit; |
1567 |
|
if (ptr->u1_is_group) { |
1568 |
|
atmark1 = "@"; |
1569 |
|
filename1 = ptr->u1.group1->group_name->name; |
1570 |
|
} else { |
1571 |
|
filename1 = ptr->u1.filename1->name; |
1572 |
|
} |
1573 |
|
if (ptr->u2_is_group) { |
1574 |
|
atmark2 = "@"; |
1575 |
|
filename2 = ptr->u2.group2->group_name->name; |
1576 |
|
} else { |
1577 |
|
filename2 = ptr->u2.filename2->name; |
1578 |
|
} |
1579 |
|
for (bit = head->read_bit; bit < MAX_DOUBLE_PATH_OPERATION; bit++) { |
1580 |
|
const char *msg; |
1581 |
|
if (!(perm & (1 << bit))) |
1582 |
|
continue; |
1583 |
|
msg = ccs_dp2keyword(bit); |
1584 |
|
pos = head->read_avail; |
1585 |
|
if (!ccs_io_printf(head, "allow_%s %s%s %s%s", msg, |
1586 |
|
atmark1, filename1, atmark2, filename2) || |
1587 |
|
!ccs_print_condition(head, cond)) |
1588 |
|
goto out; |
1589 |
|
} |
1590 |
|
head->read_bit = 0; |
1591 |
|
return true; |
1592 |
|
out: |
1593 |
|
head->read_bit = bit; |
1594 |
|
head->read_avail = pos; |
1595 |
|
return false; |
1596 |
|
} |
1597 |
|
|
1598 |
|
/** |
1599 |
|
* print_argv0_acl - Print an argv[0] ACL entry. |
1600 |
|
* |
1601 |
|
* @head: Pointer to "struct ccs_io_buffer". |
1602 |
|
* @ptr: Pointer to "struct argv0_acl_record". |
1603 |
|
* @cond: Pointer to "struct condition_list". May be NULL. |
1604 |
|
* |
1605 |
|
* Returns true on success, false otherwise. |
1606 |
|
*/ |
1607 |
|
static bool print_argv0_acl(struct ccs_io_buffer *head, |
1608 |
|
struct argv0_acl_record *ptr, |
1609 |
|
const struct condition_list *cond) |
1610 |
|
{ |
1611 |
|
int pos = head->read_avail; |
1612 |
|
if (!ccs_io_printf(head, KEYWORD_ALLOW_ARGV0 "%s %s", |
1613 |
|
ptr->filename->name, ptr->argv0->name)) |
1614 |
|
goto out; |
1615 |
|
if (!ccs_print_condition(head, cond)) |
1616 |
|
goto out; |
1617 |
|
return true; |
1618 |
|
out: |
1619 |
|
head->read_avail = pos; |
1620 |
|
return false; |
1621 |
|
} |
1622 |
|
|
1623 |
|
/** |
1624 |
|
* print_env_acl - Print an evironment variable name's ACL entry. |
1625 |
|
* |
1626 |
|
* @head: Pointer to "struct ccs_io_buffer". |
1627 |
|
* @ptr: Pointer to "struct env_acl_record". |
1628 |
|
* @cond: Pointer to "struct condition_list". May be NULL. |
1629 |
|
* |
1630 |
|
* Returns true on success, false otherwise. |
1631 |
|
*/ |
1632 |
|
static bool print_env_acl(struct ccs_io_buffer *head, |
1633 |
|
struct env_acl_record *ptr, |
1634 |
|
const struct condition_list *cond) |
1635 |
|
{ |
1636 |
|
int pos = head->read_avail; |
1637 |
|
if (!ccs_io_printf(head, KEYWORD_ALLOW_ENV "%s", ptr->env->name)) |
1638 |
|
goto out; |
1639 |
|
if (!ccs_print_condition(head, cond)) |
1640 |
|
goto out; |
1641 |
|
return true; |
1642 |
|
out: |
1643 |
|
head->read_avail = pos; |
1644 |
|
return false; |
1645 |
|
} |
1646 |
|
|
1647 |
|
/** |
1648 |
|
* print_capability_acl - Print a capability ACL entry. |
1649 |
|
* |
1650 |
|
* @head: Pointer to "struct ccs_io_buffer". |
1651 |
|
* @ptr: Pointer to "struct capability_acl_record". |
1652 |
|
* @cond: Pointer to "struct condition_list". May be NULL. |
1653 |
|
* |
1654 |
|
* Returns true on success, false otherwise. |
1655 |
|
*/ |
1656 |
|
static bool print_capability_acl(struct ccs_io_buffer *head, |
1657 |
|
struct capability_acl_record *ptr, |
1658 |
|
const struct condition_list *cond) |
1659 |
|
{ |
1660 |
|
int pos = head->read_avail; |
1661 |
|
if (!ccs_io_printf(head, KEYWORD_ALLOW_CAPABILITY "%s", |
1662 |
|
ccs_cap2keyword(ptr->operation))) |
1663 |
|
goto out; |
1664 |
|
if (!ccs_print_condition(head, cond)) |
1665 |
|
goto out; |
1666 |
|
return true; |
1667 |
|
out: |
1668 |
|
head->read_avail = pos; |
1669 |
|
return false; |
1670 |
|
} |
1671 |
|
|
1672 |
|
/** |
1673 |
|
* print_ipv4_entry - Print IPv4 address of a network ACL entry. |
1674 |
|
* |
1675 |
|
* @head: Pointer to "struct ccs_io_buffer". |
1676 |
|
* @ptr: Pointer to "struct ip_network_acl_record". |
1677 |
|
* |
1678 |
|
* Returns true on success, false otherwise. |
1679 |
|
*/ |
1680 |
|
static bool print_ipv4_entry(struct ccs_io_buffer *head, |
1681 |
|
struct ip_network_acl_record *ptr) |
1682 |
|
{ |
1683 |
|
const u32 min_address = ptr->u.ipv4.min; |
1684 |
|
const u32 max_address = ptr->u.ipv4.max; |
1685 |
|
if (!ccs_io_printf(head, "%u.%u.%u.%u", HIPQUAD(min_address))) |
1686 |
|
return false; |
1687 |
|
if (min_address != max_address |
1688 |
|
&& !ccs_io_printf(head, "-%u.%u.%u.%u", HIPQUAD(max_address))) |
1689 |
|
return false; |
1690 |
|
return true; |
1691 |
|
} |
1692 |
|
|
1693 |
|
/** |
1694 |
|
* print_ipv6_entry - Print IPv6 address of a network ACL entry. |
1695 |
|
* |
1696 |
|
* @head: Pointer to "struct ccs_io_buffer". |
1697 |
|
* @ptr: Pointer to "struct ip_network_acl_record". |
1698 |
|
* |
1699 |
|
* Returns true on success, false otherwise. |
1700 |
|
*/ |
1701 |
|
static bool print_ipv6_entry(struct ccs_io_buffer *head, |
1702 |
|
struct ip_network_acl_record *ptr) |
1703 |
|
{ |
1704 |
|
char buf[64]; |
1705 |
|
const struct in6_addr *min_address = ptr->u.ipv6.min; |
1706 |
|
const struct in6_addr *max_address = ptr->u.ipv6.max; |
1707 |
|
ccs_print_ipv6(buf, sizeof(buf), min_address); |
1708 |
|
if (!ccs_io_printf(head, "%s", buf)) |
1709 |
|
return false; |
1710 |
|
if (min_address != max_address) { |
1711 |
|
ccs_print_ipv6(buf, sizeof(buf), max_address); |
1712 |
|
if (!ccs_io_printf(head, "-%s", buf)) |
1713 |
|
return false; |
1714 |
|
} |
1715 |
|
return true; |
1716 |
|
} |
1717 |
|
|
1718 |
|
/** |
1719 |
|
* print_port_entry - Print port number of a network ACL entry. |
1720 |
|
* |
1721 |
|
* @head: Pointer to "struct ccs_io_buffer". |
1722 |
|
* @ptr: Pointer to "struct ip_network_acl_record". |
1723 |
|
* |
1724 |
|
* Returns true on success, false otherwise. |
1725 |
|
*/ |
1726 |
|
static bool print_port_entry(struct ccs_io_buffer *head, |
1727 |
|
struct ip_network_acl_record *ptr) |
1728 |
|
{ |
1729 |
|
const u16 min_port = ptr->min_port, max_port = ptr->max_port; |
1730 |
|
if (!ccs_io_printf(head, " %u", min_port)) |
1731 |
|
return false; |
1732 |
|
if (min_port != max_port && !ccs_io_printf(head, "-%u", max_port)) |
1733 |
|
return false; |
1734 |
|
return true; |
1735 |
|
} |
1736 |
|
|
1737 |
|
/** |
1738 |
|
* print_network_acl - Print a network ACL entry. |
1739 |
|
* |
1740 |
|
* @head: Pointer to "struct ccs_io_buffer". |
1741 |
|
* @ptr: Pointer to "struct ip_network_acl_record". |
1742 |
|
* @cond: Pointer to "struct condition_list". May be NULL. |
1743 |
|
* |
1744 |
|
* Returns true on success, false otherwise. |
1745 |
|
*/ |
1746 |
|
static bool print_network_acl(struct ccs_io_buffer *head, |
1747 |
|
struct ip_network_acl_record *ptr, |
1748 |
|
const struct condition_list *cond) |
1749 |
|
{ |
1750 |
|
int pos = head->read_avail; |
1751 |
|
if (!ccs_io_printf(head, KEYWORD_ALLOW_NETWORK "%s ", |
1752 |
|
ccs_net2keyword(ptr->operation_type))) |
1753 |
|
goto out; |
1754 |
|
switch (ptr->record_type) { |
1755 |
|
case IP_RECORD_TYPE_ADDRESS_GROUP: |
1756 |
|
if (!ccs_io_printf(head, "@%s", ptr->u.group->group_name->name)) |
1757 |
|
goto out; |
1758 |
|
break; |
1759 |
|
case IP_RECORD_TYPE_IPv4: |
1760 |
|
if (!print_ipv4_entry(head, ptr)) |
1761 |
|
goto out; |
1762 |
|
break; |
1763 |
|
case IP_RECORD_TYPE_IPv6: |
1764 |
|
if (!print_ipv6_entry(head, ptr)) |
1765 |
|
goto out; |
1766 |
|
break; |
1767 |
|
} |
1768 |
|
if (!print_port_entry(head, ptr)) |
1769 |
|
goto out; |
1770 |
|
if (!ccs_print_condition(head, cond)) |
1771 |
|
goto out; |
1772 |
|
return true; |
1773 |
|
out: |
1774 |
|
head->read_avail = pos; |
1775 |
|
return false; |
1776 |
|
} |
1777 |
|
|
1778 |
|
/** |
1779 |
|
* print_signal_acl - Print a signal ACL entry. |
1780 |
|
* |
1781 |
|
* @head: Pointer to "struct ccs_io_buffer". |
1782 |
|
* @ptr: Pointer to "struct signale_acl_record". |
1783 |
|
* @cond: Pointer to "struct condition_list". May be NULL. |
1784 |
|
* |
1785 |
|
* Returns true on success, false otherwise. |
1786 |
|
*/ |
1787 |
|
static bool print_signal_acl(struct ccs_io_buffer *head, |
1788 |
|
struct signal_acl_record *ptr, |
1789 |
|
const struct condition_list *cond) |
1790 |
|
{ |
1791 |
|
int pos = head->read_avail; |
1792 |
|
if (!ccs_io_printf(head, KEYWORD_ALLOW_SIGNAL "%u %s", |
1793 |
|
ptr->sig, ptr->domainname->name)) |
1794 |
|
goto out; |
1795 |
|
if (!ccs_print_condition(head, cond)) |
1796 |
|
goto out; |
1797 |
|
return true; |
1798 |
|
out: |
1799 |
|
head->read_avail = pos; |
1800 |
|
return false; |
1801 |
|
} |
1802 |
|
|
1803 |
|
/** |
1804 |
|
* print_execute_handler_record - Print an execute handler ACL entry. |
1805 |
|
* |
1806 |
|
* @head: Pointer to "struct ccs_io_buffer". |
1807 |
|
* @keyword: Name of the keyword. |
1808 |
|
* @ptr: Pointer to "struct execute_handler_record". |
1809 |
|
* |
1810 |
|
* Returns true on success, false otherwise. |
1811 |
|
*/ |
1812 |
|
static bool print_execute_handler_record(struct ccs_io_buffer *head, |
1813 |
|
const char *keyword, |
1814 |
|
struct execute_handler_record *ptr) |
1815 |
|
{ |
1816 |
|
return ccs_io_printf(head, "%s %s\n", keyword, ptr->handler->name); |
1817 |
|
} |
1818 |
|
|
1819 |
|
/** |
1820 |
|
* print_entry - Print an ACL entry. |
1821 |
|
* |
1822 |
|
* @head: Pointer to "struct ccs_io_buffer". |
1823 |
|
* @ptr: Pointer to an ACL entry. |
1824 |
|
* |
1825 |
|
* Returns true on success, false otherwise. |
1826 |
|
*/ |
1827 |
|
static bool print_entry(struct ccs_io_buffer *head, struct acl_info *ptr) |
1828 |
|
{ |
1829 |
|
const struct condition_list *cond = ccs_get_condition_part(ptr); |
1830 |
|
const u8 acl_type = ccs_acl_type2(ptr); |
1831 |
|
if (acl_type & ACL_DELETED) |
1832 |
|
return true; |
1833 |
|
if (acl_type == TYPE_SINGLE_PATH_ACL) { |
1834 |
|
struct single_path_acl_record *acl |
1835 |
|
= container_of(ptr, struct single_path_acl_record, |
1836 |
|
head); |
1837 |
|
return print_single_path_acl(head, acl, cond); |
1838 |
|
} |
1839 |
|
if (acl_type == TYPE_DOUBLE_PATH_ACL) { |
1840 |
|
struct double_path_acl_record *acl |
1841 |
|
= container_of(ptr, struct double_path_acl_record, |
1842 |
|
head); |
1843 |
|
return print_double_path_acl(head, acl, cond); |
1844 |
|
} |
1845 |
|
if (acl_type == TYPE_ARGV0_ACL) { |
1846 |
|
struct argv0_acl_record *acl |
1847 |
|
= container_of(ptr, struct argv0_acl_record, head); |
1848 |
|
return print_argv0_acl(head, acl, cond); |
1849 |
|
} |
1850 |
|
if (acl_type == TYPE_ENV_ACL) { |
1851 |
|
struct env_acl_record *acl |
1852 |
|
= container_of(ptr, struct env_acl_record, head); |
1853 |
|
return print_env_acl(head, acl, cond); |
1854 |
|
} |
1855 |
|
if (acl_type == TYPE_CAPABILITY_ACL) { |
1856 |
|
struct capability_acl_record *acl |
1857 |
|
= container_of(ptr, struct capability_acl_record, head); |
1858 |
|
return print_capability_acl(head, acl, cond); |
1859 |
|
} |
1860 |
|
if (acl_type == TYPE_IP_NETWORK_ACL) { |
1861 |
|
struct ip_network_acl_record *acl |
1862 |
|
= container_of(ptr, struct ip_network_acl_record, head); |
1863 |
|
return print_network_acl(head, acl, cond); |
1864 |
|
} |
1865 |
|
if (acl_type == TYPE_SIGNAL_ACL) { |
1866 |
|
struct signal_acl_record *acl |
1867 |
|
= container_of(ptr, struct signal_acl_record, head); |
1868 |
|
return print_signal_acl(head, acl, cond); |
1869 |
|
} |
1870 |
|
if (acl_type == TYPE_EXECUTE_HANDLER) { |
1871 |
|
struct execute_handler_record *acl |
1872 |
|
= container_of(ptr, struct execute_handler_record, |
1873 |
|
head); |
1874 |
|
const char *keyword = KEYWORD_EXECUTE_HANDLER; |
1875 |
|
return print_execute_handler_record(head, keyword, acl); |
1876 |
|
} |
1877 |
|
if (acl_type == TYPE_DENIED_EXECUTE_HANDLER) { |
1878 |
|
struct execute_handler_record *acl |
1879 |
|
= container_of(ptr, struct execute_handler_record, |
1880 |
|
head); |
1881 |
|
const char *keyword = KEYWORD_DENIED_EXECUTE_HANDLER; |
1882 |
|
return print_execute_handler_record(head, keyword, acl); |
1883 |
|
} |
1884 |
|
/* Workaround for gcc 3.2.2's inline bug. */ |
1885 |
|
if (acl_type & ACL_DELETED) |
1886 |
|
return true; |
1887 |
|
BUG(); /* This must not happen. */ |
1888 |
|
return false; |
1889 |
|
} |
1890 |
|
|
1891 |
|
/** |
1892 |
|
* read_domain_policy - Read domain policy. |
1893 |
|
* |
1894 |
|
* @head: Pointer to "struct ccs_io_buffer". |
1895 |
|
* |
1896 |
|
* Returns 0. |
1897 |
|
*/ |
1898 |
|
static int read_domain_policy(struct ccs_io_buffer *head) |
1899 |
{ |
{ |
1900 |
struct list1_head *dpos; |
struct list1_head *dpos; |
1901 |
struct list1_head *apos; |
struct list1_head *apos; |
1902 |
if (head->read_eof) return 0; |
if (head->read_eof) |
1903 |
if (head->read_step == 0) { |
return 0; |
1904 |
if (!isRoot()) return -EPERM; |
if (head->read_step == 0) |
1905 |
head->read_step = 1; |
head->read_step = 1; |
|
} |
|
1906 |
list1_for_each_cookie(dpos, head->read_var1, &domain_list) { |
list1_for_each_cookie(dpos, head->read_var1, &domain_list) { |
1907 |
struct domain_info *domain; |
struct domain_info *domain; |
1908 |
|
const char *quota_exceeded = ""; |
1909 |
|
const char *transition_failed = ""; |
1910 |
|
const char *ignore_global_allow_read = ""; |
1911 |
|
const char *ignore_global_allow_env = ""; |
1912 |
domain = list1_entry(dpos, struct domain_info, list); |
domain = list1_entry(dpos, struct domain_info, list); |
1913 |
if (head->read_step != 1) goto acl_loop; |
if (head->read_step != 1) |
1914 |
if (domain->is_deleted) continue; |
goto acl_loop; |
1915 |
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; |
if (domain->is_deleted) |
1916 |
head->read_step = 2; |
continue; |
1917 |
acl_loop: ; |
/* Print domainname and flags. */ |
1918 |
if (head->read_step == 3) goto tail_mark; |
if (domain->quota_warned) |
1919 |
list1_for_each_cookie(apos, head->read_var2, &domain->acl_info_list) { |
quota_exceeded = "quota_exceeded\n"; |
1920 |
struct acl_info *ptr; |
if (domain->flags & DOMAIN_FLAGS_TRANSITION_FAILED) |
1921 |
int pos; |
transition_failed = "transition_failed\n"; |
1922 |
u8 acl_type; |
if (domain->flags & DOMAIN_FLAGS_IGNORE_GLOBAL_ALLOW_READ) |
1923 |
ptr = list1_entry(apos, struct acl_info, list); |
ignore_global_allow_read |
1924 |
if (ptr->is_deleted) continue; |
= KEYWORD_IGNORE_GLOBAL_ALLOW_READ "\n"; |
1925 |
pos = head->read_avail; |
if (domain->flags & DOMAIN_FLAGS_IGNORE_GLOBAL_ALLOW_ENV) |
1926 |
acl_type = ptr->type; |
ignore_global_allow_env |
1927 |
if (acl_type == TYPE_SINGLE_PATH_ACL) { |
= KEYWORD_IGNORE_GLOBAL_ALLOW_ENV "\n"; |
1928 |
struct single_acl_record *ptr2 = container_of(ptr, struct single_acl_record, head); |
if (!ccs_io_printf(head, "%s\n" KEYWORD_USE_PROFILE "%u\n" |
1929 |
const bool b = ptr2->u_is_group; |
"%s%s%s%s\n", domain->domainname->name, |
1930 |
const u16 perm = ptr2->perm; |
domain->profile, quota_exceeded, |
1931 |
u8 bit = head->read_bit; |
transition_failed, |
1932 |
while (bit < MAX_SINGLE_PATH_OPERATION) { |
ignore_global_allow_read, |
1933 |
if (perm & (1 << bit)) { |
ignore_global_allow_env)) |
|
pos = head->read_avail; |
|
|
if (io_printf(head, "allow_%s %s%s ", sp_operation2keyword(bit), |
|
|
b ? "@" : "", b ? ptr2->u.group->group_name->name : ptr2->u.filename->name) |
|
|
|| DumpCondition(head, ptr->cond)) { |
|
|
head->read_bit = bit; |
|
|
head->read_avail = pos; |
|
|
return 0; |
|
|
} |
|
|
} |
|
|
bit++; |
|
|
} |
|
|
head->read_bit = 0; |
|
|
} else if (acl_type == TYPE_DOUBLE_PATH_ACL) { |
|
|
struct double_acl_record *ptr2 = container_of(ptr, struct double_acl_record, head); |
|
|
const bool b0 = ptr2->u1_is_group, b1 = ptr2->u2_is_group; |
|
|
const u8 perm = ptr2->perm; |
|
|
u8 bit = head->read_bit; |
|
|
while (bit < MAX_DOUBLE_PATH_OPERATION) { |
|
|
if (perm & (1 << bit)) { |
|
|
pos = head->read_avail; |
|
|
if (io_printf(head, "allow_%s %s%s %s%s", dp_operation2keyword(bit), |
|
|
b0 ? "@" : "", b0 ? ptr2->u1.group1->group_name->name : ptr2->u1.filename1->name, |
|
|
b1 ? "@" : "", b1 ? ptr2->u2.group2->group_name->name : ptr2->u2.filename2->name) |
|
|
|| DumpCondition(head, ptr->cond)) { |
|
|
head->read_bit = bit; |
|
|
head->read_avail = pos; |
|
|
return 0; |
|
|
} |
|
|
} |
|
|
bit++; |
|
|
} |
|
|
head->read_bit = 0; |
|
|
} else if (acl_type == TYPE_ARGV0_ACL) { |
|
|
struct argv0_acl_record *ptr2 = container_of(ptr, struct argv0_acl_record, head); |
|
|
if (io_printf(head, KEYWORD_ALLOW_ARGV0 "%s %s", |
|
|
ptr2->filename->name, ptr2->argv0->name)) goto print_acl_rollback; |
|
|
} else if (acl_type == TYPE_ENV_ACL) { |
|
|
struct env_acl_record *ptr2 = container_of(ptr, struct env_acl_record, head); |
|
|
if (io_printf(head, KEYWORD_ALLOW_ENV "%s", ptr2->env->name)) goto print_acl_rollback; |
|
|
} else if (acl_type == TYPE_CAPABILITY_ACL) { |
|
|
struct capability_acl_record *ptr2 = container_of(ptr, struct capability_acl_record, head); |
|
|
const u32 capability = ptr2->capability; |
|
|
u8 bit = head->read_bit; |
|
|
while (bit < TOMOYO_MAX_CAPABILITY_INDEX) { |
|
|
if (capability & (1 << bit)) { |
|
|
pos = head->read_avail; |
|
|
if (io_printf(head, KEYWORD_ALLOW_CAPABILITY "%s", cap_operation2keyword(bit)) || |
|
|
DumpCondition(head, ptr->cond)) { |
|
|
head->read_bit = bit; |
|
|
head->read_avail = pos; |
|
|
return 0; |
|
|
} |
|
|
} |
|
|
bit++; |
|
|
} |
|
|
head->read_bit = 0; |
|
|
} else if (acl_type == TYPE_IP_NETWORK_ACL) { |
|
|
struct ip_network_acl_record *ptr2 = container_of(ptr, struct ip_network_acl_record, head); |
|
|
if (io_printf(head, KEYWORD_ALLOW_NETWORK "%s ", net_operation2keyword(ptr2->operation_type))) goto print_acl_rollback; |
|
|
switch (ptr2->record_type) { |
|
|
case IP_RECORD_TYPE_ADDRESS_GROUP: |
|
|
if (io_printf(head, "@%s", ptr2->u.group->group_name->name)) goto print_acl_rollback; |
|
|
break; |
|
|
case IP_RECORD_TYPE_IPv4: |
|
|
{ |
|
|
const u32 min_address = ptr2->u.ipv4.min, max_address = ptr2->u.ipv4.max; |
|
|
if (io_printf(head, "%u.%u.%u.%u", HIPQUAD(min_address))) goto print_acl_rollback; |
|
|
if (min_address != max_address && io_printf(head, "-%u.%u.%u.%u", HIPQUAD(max_address))) goto print_acl_rollback; |
|
|
} |
|
|
break; |
|
|
case IP_RECORD_TYPE_IPv6: |
|
|
{ |
|
|
char buf[64]; |
|
|
const struct in6_addr *min_address = ptr2->u.ipv6.min, *max_address = ptr2->u.ipv6.max; |
|
|
print_ipv6(buf, sizeof(buf), min_address); |
|
|
if (io_printf(head, "%s", buf)) goto print_acl_rollback; |
|
|
if (min_address != max_address) { |
|
|
print_ipv6(buf, sizeof(buf), max_address); |
|
|
if (io_printf(head, "-%s", buf)) goto print_acl_rollback; |
|
|
} |
|
|
} |
|
|
break; |
|
|
} |
|
|
{ |
|
|
const u16 min_port = ptr2->min_port, max_port = ptr2->max_port; |
|
|
if (io_printf(head, " %u", min_port)) goto print_acl_rollback; |
|
|
if (min_port != max_port && io_printf(head, "-%u", max_port)) goto print_acl_rollback; |
|
|
} |
|
|
} else if (acl_type == TYPE_SIGNAL_ACL) { |
|
|
struct signal_acl_record *ptr2 = container_of(ptr, struct signal_acl_record, head); |
|
|
if (io_printf(head, KEYWORD_ALLOW_SIGNAL "%u %s", ptr2->sig, ptr2->domainname->name)) goto print_acl_rollback; |
|
|
} else { |
|
|
BUG(); |
|
|
} |
|
|
if (acl_type != TYPE_SINGLE_PATH_ACL && acl_type != TYPE_DOUBLE_PATH_ACL && acl_type != TYPE_CAPABILITY_ACL && DumpCondition(head, ptr->cond)) { |
|
|
print_acl_rollback: ; |
|
|
head->read_avail = pos; |
|
1934 |
return 0; |
return 0; |
1935 |
} |
head->read_step = 2; |
1936 |
|
acl_loop: |
1937 |
|
if (head->read_step == 3) |
1938 |
|
goto tail_mark; |
1939 |
|
/* Print ACL entries in the domain. */ |
1940 |
|
list1_for_each_cookie(apos, head->read_var2, |
1941 |
|
&domain->acl_info_list) { |
1942 |
|
struct acl_info *ptr |
1943 |
|
= list1_entry(apos, struct acl_info, list); |
1944 |
|
if (!print_entry(head, ptr)) |
1945 |
|
return 0; |
1946 |
} |
} |
1947 |
head->read_step = 3; |
head->read_step = 3; |
1948 |
tail_mark: ; |
tail_mark: |
1949 |
if (io_printf(head, "\n")) return 0; |
if (!ccs_io_printf(head, "\n")) |
1950 |
|
return 0; |
1951 |
head->read_step = 1; |
head->read_step = 1; |
1952 |
} |
} |
1953 |
head->read_eof = 1; |
head->read_eof = true; |
1954 |
return 0; |
return 0; |
1955 |
} |
} |
1956 |
|
|
1957 |
#endif |
#endif |
1958 |
|
|
1959 |
static int UpdateDomainProfile(struct io_buffer *head) |
/** |
1960 |
|
* write_domain_profile - Assign profile for specified domain. |
1961 |
|
* |
1962 |
|
* @head: Pointer to "struct ccs_io_buffer". |
1963 |
|
* |
1964 |
|
* Returns 0 on success, -EINVAL otherwise. |
1965 |
|
* |
1966 |
|
* This is equivalent to doing |
1967 |
|
* |
1968 |
|
* ( echo "select " $domainname; echo "use_profile " $profile ) | |
1969 |
|
* /usr/lib/ccs/loadpolicy -d |
1970 |
|
*/ |
1971 |
|
static int write_domain_profile(struct ccs_io_buffer *head) |
1972 |
{ |
{ |
1973 |
char *data = head->write_buf; |
char *data = head->write_buf; |
1974 |
char *cp = strchr(data, ' '); |
char *cp = strchr(data, ' '); |
1975 |
struct domain_info *domain; |
struct domain_info *domain; |
1976 |
unsigned int profile; |
unsigned int profile; |
1977 |
if (!isRoot()) return -EPERM; |
if (!cp) |
1978 |
if (!cp) return -EINVAL; |
return -EINVAL; |
1979 |
*cp = '\0'; |
*cp = '\0'; |
1980 |
domain = FindDomain(cp + 1); |
domain = ccs_find_domain(cp + 1); |
1981 |
profile = simple_strtoul(data, NULL, 10); |
profile = simple_strtoul(data, NULL, 10); |
1982 |
if (domain && profile < MAX_PROFILES && (profile_ptr[profile] || !sbin_init_started)) domain->profile = (u8) profile; |
if (domain && profile < MAX_PROFILES |
1983 |
UpdateCounter(CCS_UPDATES_COUNTER_DOMAIN_POLICY); |
&& (profile_ptr[profile] || !sbin_init_started)) |
1984 |
|
domain->profile = (u8) profile; |
1985 |
|
ccs_update_counter(CCS_UPDATES_COUNTER_DOMAIN_POLICY); |
1986 |
return 0; |
return 0; |
1987 |
} |
} |
1988 |
|
|
1989 |
static int ReadDomainProfile(struct io_buffer *head) |
/** |
1990 |
|
* read_domain_profile - Read only domainname and profile. |
1991 |
|
* |
1992 |
|
* @head: Pointer to "struct ccs_io_buffer". |
1993 |
|
* |
1994 |
|
* Returns list of profile number and domainname pairs. |
1995 |
|
* |
1996 |
|
* This is equivalent to doing |
1997 |
|
* |
1998 |
|
* grep -A 1 '^<kernel>' /proc/ccs/domain_policy | |
1999 |
|
* awk ' { if ( domainname == "" ) { if ( $1 == "<kernel>" ) |
2000 |
|
* domainname = $0; } else if ( $1 == "use_profile" ) { |
2001 |
|
* print $2 " " domainname; domainname = ""; } } ; ' |
2002 |
|
*/ |
2003 |
|
static int read_domain_profile(struct ccs_io_buffer *head) |
2004 |
{ |
{ |
2005 |
struct list1_head *pos; |
struct list1_head *pos; |
2006 |
if (head->read_eof) return 0; |
if (head->read_eof) |
2007 |
if (!isRoot()) return -EPERM; |
return 0; |
2008 |
list1_for_each_cookie(pos, head->read_var1, &domain_list) { |
list1_for_each_cookie(pos, head->read_var1, &domain_list) { |
2009 |
struct domain_info *domain; |
struct domain_info *domain; |
2010 |
domain = list1_entry(pos, struct domain_info, list); |
domain = list1_entry(pos, struct domain_info, list); |
2011 |
if (domain->is_deleted) continue; |
if (domain->is_deleted) |
2012 |
if (io_printf(head, "%u %s\n", domain->profile, domain->domainname->name)) return 0; |
continue; |
2013 |
|
if (!ccs_io_printf(head, "%u %s\n", domain->profile, |
2014 |
|
domain->domainname->name)) |
2015 |
|
return 0; |
2016 |
} |
} |
2017 |
head->read_eof = 1; |
head->read_eof = true; |
2018 |
return 0; |
return 0; |
2019 |
} |
} |
2020 |
|
|
2021 |
static int WritePID(struct io_buffer *head) |
/** |
2022 |
|
* write_pid: Specify PID to obtain domainname. |
2023 |
|
* |
2024 |
|
* @head: Pointer to "struct ccs_io_buffer". |
2025 |
|
* |
2026 |
|
* Returns 0. |
2027 |
|
*/ |
2028 |
|
static int write_pid(struct ccs_io_buffer *head) |
2029 |
{ |
{ |
2030 |
head->read_step = (int) simple_strtoul(head->write_buf, NULL, 10); |
head->read_step = (int) simple_strtoul(head->write_buf, NULL, 10); |
2031 |
head->read_eof = 0; |
head->read_eof = false; |
2032 |
return 0; |
return 0; |
2033 |
} |
} |
2034 |
|
|
2035 |
static int ReadPID(struct io_buffer *head) |
/** |
2036 |
|
* read_pid - Get domainname of the specified PID. |
2037 |
|
* |
2038 |
|
* @head: Pointer to "struct ccs_io_buffer". |
2039 |
|
* |
2040 |
|
* Returns the domainname which the specified PID is in on success, |
2041 |
|
* empty string otherwise. |
2042 |
|
* The PID is specified by write_pid() so that the user can obtain |
2043 |
|
* using read()/write() interface rather than sysctl() interface. |
2044 |
|
*/ |
2045 |
|
static int read_pid(struct ccs_io_buffer *head) |
2046 |
{ |
{ |
2047 |
if (head->read_avail == 0 && !head->read_eof) { |
if (head->read_avail == 0 && !head->read_eof) { |
2048 |
const int pid = head->read_step; |
const int pid = head->read_step; |
2051 |
/***** CRITICAL SECTION START *****/ |
/***** CRITICAL SECTION START *****/ |
2052 |
read_lock(&tasklist_lock); |
read_lock(&tasklist_lock); |
2053 |
p = find_task_by_pid(pid); |
p = find_task_by_pid(pid); |
2054 |
if (p) domain = p->domain_info; |
if (p) |
2055 |
|
domain = p->domain_info; |
2056 |
read_unlock(&tasklist_lock); |
read_unlock(&tasklist_lock); |
2057 |
/***** CRITICAL SECTION END *****/ |
/***** CRITICAL SECTION END *****/ |
2058 |
if (domain) io_printf(head, "%d %u %s", pid, domain->profile, domain->domainname->name); |
if (domain) |
2059 |
head->read_eof = 1; |
ccs_io_printf(head, "%d %u %s", pid, domain->profile, |
2060 |
|
domain->domainname->name); |
2061 |
|
head->read_eof = true; |
2062 |
} |
} |
2063 |
return 0; |
return 0; |
2064 |
} |
} |
2065 |
|
|
|
/************************* EXCEPTION POLICY HANDLER *************************/ |
|
|
|
|
2066 |
#ifdef CONFIG_TOMOYO |
#ifdef CONFIG_TOMOYO |
2067 |
|
|
2068 |
static int AddExceptionPolicy(struct io_buffer *head) |
/** |
2069 |
|
* write_exception_policy - Write exception policy. |
2070 |
|
* |
2071 |
|
* @head: Pointer to "struct ccs_io_buffer". |
2072 |
|
* |
2073 |
|
* Returns 0 on success, negative value otherwise. |
2074 |
|
*/ |
2075 |
|
static int write_exception_policy(struct ccs_io_buffer *head) |
2076 |
{ |
{ |
2077 |
char *data = head->write_buf; |
char *data = head->write_buf; |
2078 |
bool is_delete = 0; |
bool is_delete = str_starts(&data, KEYWORD_DELETE); |
2079 |
if (!isRoot()) return -EPERM; |
if (str_starts(&data, KEYWORD_KEEP_DOMAIN)) |
2080 |
UpdateCounter(CCS_UPDATES_COUNTER_EXCEPTION_POLICY); |
return ccs_write_domain_keeper_policy(data, false, is_delete); |
2081 |
if (strncmp(data, KEYWORD_DELETE, KEYWORD_DELETE_LEN) == 0) { |
if (str_starts(&data, KEYWORD_NO_KEEP_DOMAIN)) |
2082 |
data += KEYWORD_DELETE_LEN; |
return ccs_write_domain_keeper_policy(data, true, is_delete); |
2083 |
is_delete = 1; |
if (str_starts(&data, KEYWORD_INITIALIZE_DOMAIN)) |
2084 |
} |
return ccs_write_domain_initializer_policy(data, false, |
2085 |
if (strncmp(data, KEYWORD_KEEP_DOMAIN, KEYWORD_KEEP_DOMAIN_LEN) == 0) { |
is_delete); |
2086 |
return AddDomainKeeperPolicy(data + KEYWORD_KEEP_DOMAIN_LEN, 0, is_delete); |
if (str_starts(&data, KEYWORD_NO_INITIALIZE_DOMAIN)) |
2087 |
} else if (strncmp(data, KEYWORD_NO_KEEP_DOMAIN, KEYWORD_NO_KEEP_DOMAIN_LEN) == 0) { |
return ccs_write_domain_initializer_policy(data, true, |
2088 |
return AddDomainKeeperPolicy(data + KEYWORD_NO_KEEP_DOMAIN_LEN, 1, is_delete); |
is_delete); |
2089 |
} else if (strncmp(data, KEYWORD_INITIALIZE_DOMAIN, KEYWORD_INITIALIZE_DOMAIN_LEN) == 0) { |
if (str_starts(&data, KEYWORD_ALIAS)) |
2090 |
return AddDomainInitializerPolicy(data + KEYWORD_INITIALIZE_DOMAIN_LEN, 0, is_delete); |
return ccs_write_alias_policy(data, is_delete); |
2091 |
} else if (strncmp(data, KEYWORD_NO_INITIALIZE_DOMAIN, KEYWORD_NO_INITIALIZE_DOMAIN_LEN) == 0) { |
if (str_starts(&data, KEYWORD_AGGREGATOR)) |
2092 |
return AddDomainInitializerPolicy(data + KEYWORD_NO_INITIALIZE_DOMAIN_LEN, 1, is_delete); |
return ccs_write_aggregator_policy(data, is_delete); |
2093 |
} else if (strncmp(data, KEYWORD_ALIAS, KEYWORD_ALIAS_LEN) == 0) { |
if (str_starts(&data, KEYWORD_ALLOW_READ)) |
2094 |
return AddAliasPolicy(data + KEYWORD_ALIAS_LEN, is_delete); |
return ccs_write_globally_readable_policy(data, is_delete); |
2095 |
} else if (strncmp(data, KEYWORD_AGGREGATOR, KEYWORD_AGGREGATOR_LEN) == 0) { |
if (str_starts(&data, KEYWORD_ALLOW_ENV)) |
2096 |
return AddAggregatorPolicy(data + KEYWORD_AGGREGATOR_LEN, is_delete); |
return ccs_write_globally_usable_env_policy(data, is_delete); |
2097 |
} else if (strncmp(data, KEYWORD_ALLOW_READ, KEYWORD_ALLOW_READ_LEN) == 0) { |
if (str_starts(&data, KEYWORD_FILE_PATTERN)) |
2098 |
return AddGloballyReadablePolicy(data + KEYWORD_ALLOW_READ_LEN, is_delete); |
return ccs_write_pattern_policy(data, is_delete); |
2099 |
} else if (strncmp(data, KEYWORD_ALLOW_ENV, KEYWORD_ALLOW_ENV_LEN) == 0) { |
if (str_starts(&data, KEYWORD_PATH_GROUP)) |
2100 |
return AddGloballyUsableEnvPolicy(data + KEYWORD_ALLOW_ENV_LEN, is_delete); |
return ccs_write_path_group_policy(data, is_delete); |
2101 |
} else if (strncmp(data, KEYWORD_FILE_PATTERN, KEYWORD_FILE_PATTERN_LEN) == 0) { |
if (str_starts(&data, KEYWORD_DENY_REWRITE)) |
2102 |
return AddFilePatternPolicy(data + KEYWORD_FILE_PATTERN_LEN, is_delete); |
return ccs_write_no_rewrite_policy(data, is_delete); |
2103 |
} else if (strncmp(data, KEYWORD_PATH_GROUP, KEYWORD_PATH_GROUP_LEN) == 0) { |
if (str_starts(&data, KEYWORD_ADDRESS_GROUP)) |
2104 |
return AddPathGroupPolicy(data + KEYWORD_PATH_GROUP_LEN, is_delete); |
return ccs_write_address_group_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); |
|
|
} |
|
2105 |
return -EINVAL; |
return -EINVAL; |
2106 |
} |
} |
2107 |
|
|
2108 |
static int ReadExceptionPolicy(struct io_buffer *head) |
/** |
2109 |
|
* read_exception_policy - Read exception policy. |
2110 |
|
* |
2111 |
|
* @head: Pointer to "struct ccs_io_buffer". |
2112 |
|
* |
2113 |
|
* Returns 0 on success, -EINVAL otherwise. |
2114 |
|
*/ |
2115 |
|
static int read_exception_policy(struct ccs_io_buffer *head) |
2116 |
{ |
{ |
2117 |
if (!head->read_eof) { |
if (!head->read_eof) { |
2118 |
switch (head->read_step) { |
switch (head->read_step) { |
2119 |
case 0: |
case 0: |
2120 |
if (!isRoot()) return -EPERM; |
head->read_var2 = NULL; |
2121 |
head->read_var2 = NULL; head->read_step = 1; |
head->read_step = 1; |
2122 |
case 1: |
case 1: |
2123 |
if (ReadDomainKeeperPolicy(head)) break; |
if (!ccs_read_domain_keeper_policy(head)) |
2124 |
head->read_var2 = NULL; head->read_step = 2; |
break; |
2125 |
|
head->read_var2 = NULL; |
2126 |
|
head->read_step = 2; |
2127 |
case 2: |
case 2: |
2128 |
if (ReadGloballyReadablePolicy(head)) break; |
if (!ccs_read_globally_readable_policy(head)) |
2129 |
head->read_var2 = NULL; head->read_step = 3; |
break; |
2130 |
|
head->read_var2 = NULL; |
2131 |
|
head->read_step = 3; |
2132 |
case 3: |
case 3: |
2133 |
if (ReadGloballyUsableEnvPolicy(head)) break; |
if (!ccs_read_globally_usable_env_policy(head)) |
2134 |
head->read_var2 = NULL; head->read_step = 4; |
break; |
2135 |
|
head->read_var2 = NULL; |
2136 |
|
head->read_step = 4; |
2137 |
case 4: |
case 4: |
2138 |
if (ReadDomainInitializerPolicy(head)) break; |
if (!ccs_read_domain_initializer_policy(head)) |
2139 |
head->read_var2 = NULL; head->read_step = 5; |
break; |
2140 |
|
head->read_var2 = NULL; |
2141 |
|
head->read_step = 5; |
2142 |
case 5: |
case 5: |
2143 |
if (ReadAliasPolicy(head)) break; |
if (!ccs_read_alias_policy(head)) |
2144 |
head->read_var2 = NULL; head->read_step = 6; |
break; |
2145 |
|
head->read_var2 = NULL; |
2146 |
|
head->read_step = 6; |
2147 |
case 6: |
case 6: |
2148 |
if (ReadAggregatorPolicy(head)) break; |
if (!ccs_read_aggregator_policy(head)) |
2149 |
head->read_var2 = NULL; head->read_step = 7; |
break; |
2150 |
|
head->read_var2 = NULL; |
2151 |
|
head->read_step = 7; |
2152 |
case 7: |
case 7: |
2153 |
if (ReadFilePatternPolicy(head)) break; |
if (!ccs_read_file_pattern(head)) |
2154 |
head->read_var2 = NULL; head->read_step = 8; |
break; |
2155 |
|
head->read_var2 = NULL; |
2156 |
|
head->read_step = 8; |
2157 |
case 8: |
case 8: |
2158 |
if (ReadNoRewritePolicy(head)) break; |
if (!ccs_read_no_rewrite_policy(head)) |
2159 |
head->read_var2 = NULL; head->read_step = 9; |
break; |
2160 |
|
head->read_var2 = NULL; |
2161 |
|
head->read_step = 9; |
2162 |
case 9: |
case 9: |
2163 |
if (ReadPathGroupPolicy(head)) break; |
if (!ccs_read_path_group_policy(head)) |
2164 |
head->read_var1 = head->read_var2 = NULL; head->read_step = 10; |
break; |
2165 |
|
head->read_var1 = NULL; |
2166 |
|
head->read_var2 = NULL; |
2167 |
|
head->read_step = 10; |
2168 |
case 10: |
case 10: |
2169 |
if (ReadAddressGroupPolicy(head)) break; |
if (!ccs_read_address_group_policy(head)) |
2170 |
head->read_eof = 1; |
break; |
2171 |
|
head->read_eof = true; |
2172 |
break; |
break; |
2173 |
default: |
default: |
2174 |
return -EINVAL; |
return -EINVAL; |
2179 |
|
|
2180 |
#endif |
#endif |
2181 |
|
|
|
/************************* SYSTEM POLICY HANDLER *************************/ |
|
|
|
|
2182 |
#ifdef CONFIG_SAKURA |
#ifdef CONFIG_SAKURA |
2183 |
|
|
2184 |
static int AddSystemPolicy(struct io_buffer *head) |
/** |
2185 |
|
* write_system_policy - Write system policy. |
2186 |
|
* |
2187 |
|
* @head: Pointer to "struct ccs_io_buffer". |
2188 |
|
* |
2189 |
|
* Returns 0 on success, negative value otherwise. |
2190 |
|
*/ |
2191 |
|
static int write_system_policy(struct ccs_io_buffer *head) |
2192 |
{ |
{ |
2193 |
char *data = head->write_buf; |
char *data = head->write_buf; |
2194 |
bool is_delete = 0; |
bool is_delete = false; |
2195 |
if (!isRoot()) return -EPERM; |
if (str_starts(&data, KEYWORD_DELETE)) |
2196 |
UpdateCounter(CCS_UPDATES_COUNTER_SYSTEM_POLICY); |
is_delete = true; |
2197 |
if (strncmp(data, KEYWORD_DELETE, KEYWORD_DELETE_LEN) == 0) { |
if (str_starts(&data, KEYWORD_ALLOW_MOUNT)) |
2198 |
data += KEYWORD_DELETE_LEN; |
return ccs_write_mount_policy(data, is_delete); |
2199 |
is_delete = 1; |
if (str_starts(&data, KEYWORD_DENY_UNMOUNT)) |
2200 |
} |
return ccs_write_no_umount_policy(data, is_delete); |
2201 |
if (strncmp(data, KEYWORD_ALLOW_MOUNT, KEYWORD_ALLOW_MOUNT_LEN) == 0) |
if (str_starts(&data, KEYWORD_ALLOW_CHROOT)) |
2202 |
return AddMountPolicy(data + KEYWORD_ALLOW_MOUNT_LEN, is_delete); |
return ccs_write_chroot_policy(data, is_delete); |
2203 |
if (strncmp(data, KEYWORD_DENY_UNMOUNT, KEYWORD_DENY_UNMOUNT_LEN) == 0) |
if (str_starts(&data, KEYWORD_ALLOW_PIVOT_ROOT)) |
2204 |
return AddNoUmountPolicy(data + KEYWORD_DENY_UNMOUNT_LEN, is_delete); |
return ccs_write_pivot_root_policy(data, is_delete); |
2205 |
if (strncmp(data, KEYWORD_ALLOW_CHROOT, KEYWORD_ALLOW_CHROOT_LEN) == 0) |
if (str_starts(&data, KEYWORD_DENY_AUTOBIND)) |
2206 |
return AddChrootPolicy(data + KEYWORD_ALLOW_CHROOT_LEN, is_delete); |
return ccs_write_reserved_port_policy(data, 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); |
|
2207 |
return -EINVAL; |
return -EINVAL; |
2208 |
} |
} |
2209 |
|
|
2210 |
static int ReadSystemPolicy(struct io_buffer *head) |
/** |
2211 |
|
* read_system_policy - Read system policy. |
2212 |
|
* |
2213 |
|
* @head: Pointer to "struct ccs_io_buffer". |
2214 |
|
* |
2215 |
|
* Returns 0 on success, -EINVAL otherwise. |
2216 |
|
*/ |
2217 |
|
static int read_system_policy(struct ccs_io_buffer *head) |
2218 |
{ |
{ |
2219 |
if (!head->read_eof) { |
if (!head->read_eof) { |
2220 |
switch (head->read_step) { |
switch (head->read_step) { |
2221 |
case 0: |
case 0: |
2222 |
if (!isRoot()) return -EPERM; |
head->read_var2 = NULL; |
2223 |
head->read_var2 = NULL; head->read_step = 1; |
head->read_step = 1; |
2224 |
case 1: |
case 1: |
2225 |
if (ReadMountPolicy(head)) break; |
if (!ccs_read_mount_policy(head)) |
2226 |
head->read_var2 = NULL; head->read_step = 2; |
break; |
2227 |
|
head->read_var2 = NULL; |
2228 |
|
head->read_step = 2; |
2229 |
case 2: |
case 2: |
2230 |
if (ReadNoUmountPolicy(head)) break; |
if (!ccs_read_no_umount_policy(head)) |
2231 |
head->read_var2 = NULL; head->read_step = 3; |
break; |
2232 |
|
head->read_var2 = NULL; |
2233 |
|
head->read_step = 3; |
2234 |
case 3: |
case 3: |
2235 |
if (ReadChrootPolicy(head)) break; |
if (!ccs_read_chroot_policy(head)) |
2236 |
head->read_var2 = NULL; head->read_step = 4; |
break; |
2237 |
|
head->read_var2 = NULL; |
2238 |
|
head->read_step = 4; |
2239 |
case 4: |
case 4: |
2240 |
if (ReadPivotRootPolicy(head)) break; |
if (!ccs_read_pivot_root_policy(head)) |
2241 |
head->read_var2 = NULL; head->read_step = 5; |
break; |
2242 |
|
head->read_var2 = NULL; |
2243 |
|
head->read_step = 5; |
2244 |
case 5: |
case 5: |
2245 |
if (ReadReservedPortPolicy(head)) break; |
if (!ccs_read_reserved_port_policy(head)) |
2246 |
head->read_eof = 1; |
break; |
2247 |
|
head->read_eof = true; |
2248 |
break; |
break; |
2249 |
default: |
default: |
2250 |
return -EINVAL; |
return -EINVAL; |
2255 |
|
|
2256 |
#endif |
#endif |
2257 |
|
|
2258 |
/************************* POLICY LOADER *************************/ |
/* Path to the policy loader. The default is /sbin/ccs-init. */ |
2259 |
|
static const char *ccs_loader; |
2260 |
|
|
2261 |
static int profile_loaded = 0; |
/** |
2262 |
|
* loader_setup - Specify the policy loader to use. |
2263 |
static const char *ccs_loader = NULL; |
* |
2264 |
|
* @str: Path to the policy loader. |
2265 |
static int __init CCS_loader_Setup(char *str) |
* |
2266 |
|
* Returns 0. |
2267 |
|
*/ |
2268 |
|
static int __init loader_setup(char *str) |
2269 |
{ |
{ |
2270 |
ccs_loader = str; |
ccs_loader = str; |
2271 |
return 0; |
return 0; |
2272 |
} |
} |
2273 |
|
|
2274 |
__setup("CCS_loader=", CCS_loader_Setup); |
__setup("CCS_loader=", loader_setup); |
2275 |
|
|
2276 |
void CCS_LoadPolicy(const char *filename) |
/** |
2277 |
|
* policy_loader_exists - Check whether /sbin/ccs-init exists. |
2278 |
|
* |
2279 |
|
* Returns true if /sbin/ccs-init exists, false otherwise. |
2280 |
|
*/ |
2281 |
|
static bool policy_loader_exists(void) |
2282 |
{ |
{ |
|
if (sbin_init_started) return; |
|
2283 |
/* |
/* |
2284 |
* Check filename is /sbin/init or /sbin/ccs-start . |
* Don't activate MAC if the path given by 'CCS_loader=' option doesn't |
2285 |
* /sbin/ccs-start is a dummy filename in case where /sbin/init can't be passed. |
* exist. If the initrd includes /sbin/init but real-root-dev has not |
2286 |
* You can create /sbin/ccs-start by "ln -s /bin/true /sbin/ccs-start", for |
* mounted on / yet, activating MAC will block the system since |
2287 |
* only the pathname is needed to activate Mandatory Access Control. |
* policies are not loaded yet. |
2288 |
|
* Thus, let do_execve() call this function everytime. |
2289 |
*/ |
*/ |
2290 |
if (strcmp(filename, "/sbin/init") != 0 && strcmp(filename, "/sbin/ccs-start") != 0) return; |
struct nameidata nd; |
2291 |
|
if (!ccs_loader) |
2292 |
|
ccs_loader = "/sbin/ccs-init"; |
2293 |
|
if (path_lookup(ccs_loader, lookup_flags, &nd)) { |
2294 |
|
printk(KERN_INFO "Not activating Mandatory Access Control now " |
2295 |
|
"since %s doesn't exist.\n", ccs_loader); |
2296 |
|
return false; |
2297 |
|
} |
2298 |
|
#if LINUX_VERSION_CODE >= KERNEL_VERSION(2, 6, 25) |
2299 |
|
path_put(&nd.path); |
2300 |
|
#else |
2301 |
|
path_release(&nd); |
2302 |
|
#endif |
2303 |
|
return true; |
2304 |
|
} |
2305 |
|
|
2306 |
|
#if LINUX_VERSION_CODE < KERNEL_VERSION(2, 5, 0) |
2307 |
|
/** |
2308 |
|
* run_ccs_loader - Start /sbin/ccs-init . |
2309 |
|
* |
2310 |
|
* @unused: Not used. |
2311 |
|
* |
2312 |
|
* Returns PID of /sbin/ccs-init on success, negative value otherwise. |
2313 |
|
*/ |
2314 |
|
static int run_ccs_loader(void *unused) |
2315 |
|
{ |
2316 |
|
char *argv[2]; |
2317 |
|
char *envp[3]; |
2318 |
|
printk(KERN_INFO "Calling %s to load policy. Please wait.\n", |
2319 |
|
ccs_loader); |
2320 |
|
argv[0] = (char *) ccs_loader; |
2321 |
|
argv[1] = NULL; |
2322 |
|
envp[0] = "HOME=/"; |
2323 |
|
envp[1] = "PATH=/sbin:/bin:/usr/sbin:/usr/bin"; |
2324 |
|
envp[2] = NULL; |
2325 |
|
return exec_usermodehelper(argv[0], argv, envp); |
2326 |
|
} |
2327 |
|
#endif |
2328 |
|
|
2329 |
|
/** |
2330 |
|
* ccs_load_policy - Run external policy loader to load policy. |
2331 |
|
* |
2332 |
|
* @filename: The program about to start. |
2333 |
|
* |
2334 |
|
* This function checks whether @filename is /sbin/init , and if so |
2335 |
|
* invoke /sbin/ccs-init and wait for the termination of /sbin/ccs-init |
2336 |
|
* and then continues invocation of /sbin/init. |
2337 |
|
* /sbin/ccs-init reads policy files in /etc/ccs/ directory and |
2338 |
|
* writes to /proc/ccs/ interfaces. |
2339 |
|
* |
2340 |
|
* Returns nothing. |
2341 |
|
*/ |
2342 |
|
void ccs_load_policy(const char *filename) |
2343 |
|
{ |
2344 |
|
if (sbin_init_started) |
2345 |
|
return; |
2346 |
/* |
/* |
2347 |
* Don't activate MAC if the path given by 'CCS_loader=' option doesn't exist. |
* Check filename is /sbin/init or /sbin/ccs-start. |
2348 |
* If initrd.img includes /sbin/init but real-root-dev has not mounted on / yet, |
* /sbin/ccs-start is a dummy filename in case where /sbin/init can't |
2349 |
* activating MAC will block the system since policies are not loaded yet. |
* be passed. |
2350 |
* So let do_execve() call this function everytime. |
* You can create /sbin/ccs-start by "ln -s /bin/true /sbin/ccs-start". |
2351 |
*/ |
*/ |
2352 |
|
if (strcmp(filename, "/sbin/init") && |
2353 |
|
strcmp(filename, "/sbin/ccs-start")) |
2354 |
|
return; |
2355 |
|
if (!policy_loader_exists()) |
2356 |
|
return; |
2357 |
|
#if LINUX_VERSION_CODE >= KERNEL_VERSION(2, 5, 0) |
2358 |
{ |
{ |
2359 |
struct nameidata nd; |
char *argv[2]; |
2360 |
if (!ccs_loader) ccs_loader = "/sbin/ccs-init"; |
char *envp[3]; |
2361 |
if (path_lookup(ccs_loader, lookup_flags, &nd)) { |
printk(KERN_INFO "Calling %s to load policy. Please wait.\n", |
2362 |
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); |
|
2363 |
argv[0] = (char *) ccs_loader; |
argv[0] = (char *) ccs_loader; |
2364 |
argv[1] = NULL; |
argv[1] = NULL; |
2365 |
envp[0] = "HOME=/"; |
envp[0] = "HOME=/"; |
2366 |
envp[1] = "PATH=/sbin:/bin:/usr/sbin:/usr/bin"; |
envp[1] = "PATH=/sbin:/bin:/usr/sbin:/usr/bin"; |
2367 |
envp[2] = NULL; |
envp[2] = NULL; |
|
#if LINUX_VERSION_CODE >= KERNEL_VERSION(2,5,0) |
|
2368 |
call_usermodehelper(argv[0], argv, envp, 1); |
call_usermodehelper(argv[0], argv, envp, 1); |
2369 |
|
} |
2370 |
#else |
#else |
2371 |
call_usermodehelper(argv[0], argv, envp); |
{ |
2372 |
#endif |
/* Copied from kernel/kmod.c */ |
2373 |
while (!profile_loaded) { |
struct task_struct *task = current; |
2374 |
set_current_state(TASK_INTERRUPTIBLE); |
pid_t pid = kernel_thread(run_ccs_loader, NULL, 0); |
2375 |
schedule_timeout(HZ / 10); |
sigset_t tmpsig; |
2376 |
} |
spin_lock_irq(&task->sigmask_lock); |
2377 |
|
tmpsig = task->blocked; |
2378 |
|
siginitsetinv(&task->blocked, |
2379 |
|
sigmask(SIGKILL) | sigmask(SIGSTOP)); |
2380 |
|
recalc_sigpending(task); |
2381 |
|
spin_unlock_irq(&task->sigmask_lock); |
2382 |
|
if (pid >= 0) |
2383 |
|
waitpid(pid, NULL, __WCLONE); |
2384 |
|
spin_lock_irq(&task->sigmask_lock); |
2385 |
|
task->blocked = tmpsig; |
2386 |
|
recalc_sigpending(task); |
2387 |
|
spin_unlock_irq(&task->sigmask_lock); |
2388 |
} |
} |
2389 |
|
#endif |
2390 |
#ifdef CONFIG_SAKURA |
#ifdef CONFIG_SAKURA |
2391 |
printk("SAKURA: 1.5.3-pre 2008/01/02\n"); |
printk(KERN_INFO "SAKURA: 1.6.1 2008/06/04\n"); |
2392 |
#endif |
#endif |
2393 |
#ifdef CONFIG_TOMOYO |
#ifdef CONFIG_TOMOYO |
2394 |
printk("TOMOYO: 1.5.3-pre 2008/01/02\n"); |
printk(KERN_INFO "TOMOYO: 1.6.1 2008/06/04\n"); |
2395 |
#endif |
#endif |
2396 |
//if (!profile_loaded) panic("No profiles loaded. Run policy loader using 'init=' option.\n"); |
printk(KERN_INFO "Mandatory Access Control activated.\n"); |
2397 |
printk("Mandatory Access Control activated.\n"); |
sbin_init_started = true; |
|
sbin_init_started = 1; |
|
2398 |
ccs_log_level = KERN_WARNING; |
ccs_log_level = KERN_WARNING; |
2399 |
{ /* Check all profiles currently assigned to domains are defined. */ |
{ /* Check all profiles currently assigned to domains are defined. */ |
2400 |
struct domain_info *domain; |
struct domain_info *domain; |
2401 |
list1_for_each_entry(domain, &domain_list, list) { |
list1_for_each_entry(domain, &domain_list, list) { |
2402 |
const u8 profile = domain->profile; |
const u8 profile = domain->profile; |
2403 |
if (!profile_ptr[profile]) panic("Profile %u (used by '%s') not defined.\n", profile, domain->domainname->name); |
if (profile_ptr[profile]) |
2404 |
|
continue; |
2405 |
|
panic("Profile %u (used by '%s') not defined.\n", |
2406 |
|
profile, domain->domainname->name); |
2407 |
} |
} |
2408 |
} |
} |
2409 |
} |
} |
2410 |
|
|
2411 |
|
/* Wait queue for query_list. */ |
|
/************************* MAC Decision Delayer *************************/ |
|
|
|
|
2412 |
static DECLARE_WAIT_QUEUE_HEAD(query_wait); |
static DECLARE_WAIT_QUEUE_HEAD(query_wait); |
2413 |
|
|
2414 |
static spinlock_t query_lock = SPIN_LOCK_UNLOCKED; |
/* Lock for manipurating query_list. */ |
2415 |
|
static DEFINE_SPINLOCK(query_lock); |
2416 |
|
|
2417 |
|
/* Structure for query. */ |
2418 |
struct query_entry { |
struct query_entry { |
2419 |
struct list_head list; |
struct list_head list; |
2420 |
char *query; |
char *query; |
2424 |
int answer; |
int answer; |
2425 |
}; |
}; |
2426 |
|
|
2427 |
|
/* The list for "struct query_entry". */ |
2428 |
static LIST_HEAD(query_list); |
static LIST_HEAD(query_list); |
2429 |
|
|
2430 |
|
/* Number of "struct file" referring /proc/ccs/query interface. */ |
2431 |
static atomic_t queryd_watcher = ATOMIC_INIT(0); |
static atomic_t queryd_watcher = ATOMIC_INIT(0); |
2432 |
|
|
2433 |
int CheckSupervisor(const char *fmt, ...) |
/** |
2434 |
|
* ccs_check_supervisor - Ask for the supervisor's decision. |
2435 |
|
* |
2436 |
|
* @fmt: The printf()'s format string, followed by parameters. |
2437 |
|
* |
2438 |
|
* Returns 0 if the supervisor decided to permit the access request which |
2439 |
|
* violated the policy in enforcing mode, -EPERM otherwise. |
2440 |
|
*/ |
2441 |
|
int ccs_check_supervisor(const char *fmt, ...) |
2442 |
{ |
{ |
2443 |
va_list args; |
va_list args; |
2444 |
int error = -EPERM; |
int error = -EPERM; |
2445 |
int pos, len; |
int pos; |
2446 |
static unsigned int serial = 0; |
int len; |
2447 |
|
static unsigned int serial; |
2448 |
struct query_entry *query_entry; |
struct query_entry *query_entry; |
2449 |
if (!CheckCCSFlags(CCS_ALLOW_ENFORCE_GRACE) || !atomic_read(&queryd_watcher)) { |
if (!ccs_check_flags(CCS_ALLOW_ENFORCE_GRACE) |
2450 |
#ifdef ALT_EXEC |
|| !atomic_read(&queryd_watcher)) { |
2451 |
if ((current->tomoyo_flags & CCS_DONT_SLEEP_ON_ENFORCE_ERROR) == 0) { |
int i; |
2452 |
int i; |
if (current->tomoyo_flags & CCS_DONT_SLEEP_ON_ENFORCE_ERROR) |
2453 |
for (i = 0; i < CheckCCSFlags(CCS_SLEEP_PERIOD); i++) { |
return -EPERM; |
2454 |
set_current_state(TASK_INTERRUPTIBLE); |
for (i = 0; i < ccs_check_flags(CCS_SLEEP_PERIOD); i++) { |
2455 |
schedule_timeout(HZ / 10); |
set_current_state(TASK_INTERRUPTIBLE); |
2456 |
} |
schedule_timeout(HZ / 10); |
2457 |
} |
} |
|
#endif |
|
2458 |
return -EPERM; |
return -EPERM; |
2459 |
} |
} |
2460 |
va_start(args, fmt); |
va_start(args, fmt); |
2461 |
len = vsnprintf((char *) &pos, sizeof(pos) - 1, fmt, args) + 32; |
len = vsnprintf((char *) &pos, sizeof(pos) - 1, fmt, args) + 32; |
2462 |
va_end(args); |
va_end(args); |
2463 |
if ((query_entry = ccs_alloc(sizeof(*query_entry))) == NULL || |
query_entry = ccs_alloc(sizeof(*query_entry)); |
2464 |
(query_entry->query = ccs_alloc(len)) == NULL) goto out; |
if (!query_entry) |
2465 |
|
goto out; |
2466 |
|
query_entry->query = ccs_alloc(len); |
2467 |
|
if (!query_entry->query) |
2468 |
|
goto out; |
2469 |
INIT_LIST_HEAD(&query_entry->list); |
INIT_LIST_HEAD(&query_entry->list); |
2470 |
/***** CRITICAL SECTION START *****/ |
/***** CRITICAL SECTION START *****/ |
2471 |
spin_lock(&query_lock); |
spin_lock(&query_lock); |
2472 |
query_entry->serial = serial++; |
query_entry->serial = serial++; |
2473 |
spin_unlock(&query_lock); |
spin_unlock(&query_lock); |
2474 |
/***** CRITICAL SECTION END *****/ |
/***** CRITICAL SECTION END *****/ |
2475 |
pos = snprintf(query_entry->query, len - 1, "Q%u\n", query_entry->serial); |
pos = snprintf(query_entry->query, len - 1, "Q%u\n", |
2476 |
|
query_entry->serial); |
2477 |
va_start(args, fmt); |
va_start(args, fmt); |
2478 |
vsnprintf(query_entry->query + pos, len - 1 - pos, fmt, args); |
vsnprintf(query_entry->query + pos, len - 1 - pos, fmt, args); |
2479 |
query_entry->query_len = strlen(query_entry->query) + 1; |
query_entry->query_len = strlen(query_entry->query) + 1; |
2483 |
list_add_tail(&query_entry->list, &query_list); |
list_add_tail(&query_entry->list, &query_list); |
2484 |
spin_unlock(&query_lock); |
spin_unlock(&query_lock); |
2485 |
/***** CRITICAL SECTION END *****/ |
/***** CRITICAL SECTION END *****/ |
2486 |
UpdateCounter(CCS_UPDATES_COUNTER_QUERY); |
ccs_update_counter(CCS_UPDATES_COUNTER_QUERY); |
2487 |
/* Give 10 seconds for supervisor's opinion. */ |
/* Give 10 seconds for supervisor's opinion. */ |
2488 |
for (query_entry->timer = 0; atomic_read(&queryd_watcher) && CheckCCSFlags(CCS_ALLOW_ENFORCE_GRACE) && query_entry->timer < 100; query_entry->timer++) { |
for (query_entry->timer = 0; atomic_read(&queryd_watcher) |
2489 |
|
&& ccs_check_flags(CCS_ALLOW_ENFORCE_GRACE) |
2490 |
|
&& query_entry->timer < 100; query_entry->timer++) { |
2491 |
wake_up(&query_wait); |
wake_up(&query_wait); |
2492 |
set_current_state(TASK_INTERRUPTIBLE); |
set_current_state(TASK_INTERRUPTIBLE); |
2493 |
schedule_timeout(HZ / 10); |
schedule_timeout(HZ / 10); |
2494 |
if (query_entry->answer) break; |
if (query_entry->answer) |
2495 |
|
break; |
2496 |
} |
} |
2497 |
UpdateCounter(CCS_UPDATES_COUNTER_QUERY); |
ccs_update_counter(CCS_UPDATES_COUNTER_QUERY); |
2498 |
/***** CRITICAL SECTION START *****/ |
/***** CRITICAL SECTION START *****/ |
2499 |
spin_lock(&query_lock); |
spin_lock(&query_lock); |
2500 |
list_del(&query_entry->list); |
list_del(&query_entry->list); |
2512 |
/* Rejected by administrator. */ |
/* Rejected by administrator. */ |
2513 |
break; |
break; |
2514 |
} |
} |
2515 |
out: ; |
out: |
2516 |
if (query_entry) ccs_free(query_entry->query); |
if (query_entry) |
2517 |
|
ccs_free(query_entry->query); |
2518 |
ccs_free(query_entry); |
ccs_free(query_entry); |
2519 |
return error; |
return error; |
2520 |
} |
} |
2521 |
|
|
2522 |
static int PollQuery(struct file *file, poll_table *wait) |
/** |
2523 |
|
* poll_query - poll() for /proc/ccs/query. |
2524 |
|
* |
2525 |
|
* @file: Pointer to "struct file". |
2526 |
|
* @wait: Pointer to "poll_table". |
2527 |
|
* |
2528 |
|
* Returns POLLIN | POLLRDNORM when ready to read, 0 otherwise. |
2529 |
|
* |
2530 |
|
* Waits for access requests which violated policy in enforcing mode. |
2531 |
|
*/ |
2532 |
|
static int poll_query(struct file *file, poll_table *wait) |
2533 |
{ |
{ |
2534 |
int found; |
bool found; |
2535 |
/***** CRITICAL SECTION START *****/ |
/***** CRITICAL SECTION START *****/ |
2536 |
spin_lock(&query_lock); |
spin_lock(&query_lock); |
2537 |
found = !list_empty(&query_list); |
found = !list_empty(&query_list); |
2538 |
spin_unlock(&query_lock); |
spin_unlock(&query_lock); |
2539 |
/***** CRITICAL SECTION END *****/ |
/***** CRITICAL SECTION END *****/ |
2540 |
if (found) return POLLIN | POLLRDNORM; |
if (found) |
2541 |
|
return POLLIN | POLLRDNORM; |
2542 |
poll_wait(file, &query_wait, wait); |
poll_wait(file, &query_wait, wait); |
2543 |
/***** CRITICAL SECTION START *****/ |
/***** CRITICAL SECTION START *****/ |
2544 |
spin_lock(&query_lock); |
spin_lock(&query_lock); |
2545 |
found = !list_empty(&query_list); |
found = !list_empty(&query_list); |
2546 |
spin_unlock(&query_lock); |
spin_unlock(&query_lock); |
2547 |
/***** CRITICAL SECTION END *****/ |
/***** CRITICAL SECTION END *****/ |
2548 |
if (found) return POLLIN | POLLRDNORM; |
if (found) |
2549 |
|
return POLLIN | POLLRDNORM; |
2550 |
return 0; |
return 0; |
2551 |
} |
} |
2552 |
|
|
2553 |
static int ReadQuery(struct io_buffer *head) |
/** |
2554 |
|
* read_query - Read access requests which violated policy in enforcing mode. |
2555 |
|
* |
2556 |
|
* @head: Pointer to "struct ccs_io_buffer". |
2557 |
|
* |
2558 |
|
* Returns 0. |
2559 |
|
*/ |
2560 |
|
static int read_query(struct ccs_io_buffer *head) |
2561 |
{ |
{ |
2562 |
struct list_head *tmp; |
struct list_head *tmp; |
2563 |
int pos = 0, len = 0; |
int pos = 0; |
2564 |
|
int len = 0; |
2565 |
char *buf; |
char *buf; |
2566 |
if (head->read_avail) return 0; |
if (head->read_avail) |
2567 |
|
return 0; |
2568 |
if (head->read_buf) { |
if (head->read_buf) { |
2569 |
ccs_free(head->read_buf); head->read_buf = NULL; |
ccs_free(head->read_buf); |
2570 |
|
head->read_buf = NULL; |
2571 |
head->readbuf_size = 0; |
head->readbuf_size = 0; |
2572 |
} |
} |
2573 |
/***** CRITICAL SECTION START *****/ |
/***** CRITICAL SECTION START *****/ |
2574 |
spin_lock(&query_lock); |
spin_lock(&query_lock); |
2575 |
list_for_each(tmp, &query_list) { |
list_for_each(tmp, &query_list) { |
2576 |
struct query_entry *ptr = list_entry(tmp, struct query_entry, list); |
struct query_entry *ptr |
2577 |
if (pos++ == head->read_step) { |
= list_entry(tmp, struct query_entry, list); |
2578 |
len = ptr->query_len; |
if (pos++ != head->read_step) |
2579 |
break; |
continue; |
2580 |
} |
len = ptr->query_len; |
2581 |
|
break; |
2582 |
} |
} |
2583 |
spin_unlock(&query_lock); |
spin_unlock(&query_lock); |
2584 |
/***** CRITICAL SECTION END *****/ |
/***** CRITICAL SECTION END *****/ |
2586 |
head->read_step = 0; |
head->read_step = 0; |
2587 |
return 0; |
return 0; |
2588 |
} |
} |
2589 |
if ((buf = ccs_alloc(len)) != NULL) { |
buf = ccs_alloc(len); |
2590 |
|
if (buf) { |
2591 |
pos = 0; |
pos = 0; |
2592 |
/***** CRITICAL SECTION START *****/ |
/***** CRITICAL SECTION START *****/ |
2593 |
spin_lock(&query_lock); |
spin_lock(&query_lock); |
2594 |
list_for_each(tmp, &query_list) { |
list_for_each(tmp, &query_list) { |
2595 |
struct query_entry *ptr = list_entry(tmp, struct query_entry, list); |
struct query_entry *ptr |
2596 |
if (pos++ == head->read_step) { |
= list_entry(tmp, struct query_entry, list); |
2597 |
/* Some query can be skiipped since query_list can change, but I don't care. */ |
if (pos++ != head->read_step) |
2598 |
if (len == ptr->query_len) memmove(buf, ptr->query, len); |
continue; |
2599 |
break; |
/* |
2600 |
} |
* Some query can be skipped because query_list |
2601 |
|
* can change, but I don't care. |
2602 |
|
*/ |
2603 |
|
if (len == ptr->query_len) |
2604 |
|
memmove(buf, ptr->query, len); |
2605 |
|
break; |
2606 |
} |
} |
2607 |
spin_unlock(&query_lock); |
spin_unlock(&query_lock); |
2608 |
/***** CRITICAL SECTION END *****/ |
/***** CRITICAL SECTION END *****/ |
2609 |
if (buf[0]) { |
if (buf[0]) { |
2610 |
head->readbuf_size = head->read_avail = len; |
head->read_avail = len; |
2611 |
|
head->readbuf_size = head->read_avail; |
2612 |
head->read_buf = buf; |
head->read_buf = buf; |
2613 |
head->read_step++; |
head->read_step++; |
2614 |
} else { |
} else { |
2618 |
return 0; |
return 0; |
2619 |
} |
} |
2620 |
|
|
2621 |
static int WriteAnswer(struct io_buffer *head) |
/** |
| |