1 |
kumaneko |
111 |
/* |
2 |
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* fs/ccs_common.c |
3 |
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* |
4 |
|
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* Common functions for SAKURA and TOMOYO. |
5 |
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* |
6 |
kumaneko |
2030 |
* Copyright (C) 2005-2009 NTT DATA CORPORATION |
7 |
kumaneko |
111 |
* |
8 |
kumaneko |
2519 |
* Version: 1.6.8-pre 2009/05/08 |
9 |
kumaneko |
111 |
* |
10 |
|
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* This file is applicable to both 2.4.30 and 2.6.11 and later. |
11 |
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* See README.ccs for ChangeLog. |
12 |
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* |
13 |
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*/ |
14 |
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15 |
kumaneko |
1255 |
#include <linux/version.h> |
16 |
|
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#if LINUX_VERSION_CODE < KERNEL_VERSION(2, 5, 0) |
17 |
|
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#define __KERNEL_SYSCALLS__ |
18 |
|
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#endif |
19 |
kumaneko |
111 |
#include <linux/string.h> |
20 |
|
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#include <linux/mm.h> |
21 |
|
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#include <linux/utime.h> |
22 |
|
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#include <linux/file.h> |
23 |
|
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#include <linux/module.h> |
24 |
|
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#include <linux/slab.h> |
25 |
|
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#include <asm/uaccess.h> |
26 |
|
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#include <stdarg.h> |
27 |
kumaneko |
1052 |
#if LINUX_VERSION_CODE >= KERNEL_VERSION(2, 5, 0) |
28 |
kumaneko |
111 |
#include <linux/namei.h> |
29 |
|
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#include <linux/mount.h> |
30 |
kumaneko |
2002 |
static const int ccs_lookup_flags = LOOKUP_FOLLOW; |
31 |
kumaneko |
111 |
#else |
32 |
kumaneko |
2002 |
static const int ccs_lookup_flags = LOOKUP_FOLLOW | LOOKUP_POSITIVE; |
33 |
kumaneko |
111 |
#endif |
34 |
|
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#include <linux/realpath.h> |
35 |
|
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#include <linux/ccs_common.h> |
36 |
|
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#include <linux/ccs_proc.h> |
37 |
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#include <linux/tomoyo.h> |
38 |
kumaneko |
1255 |
#if LINUX_VERSION_CODE < KERNEL_VERSION(2, 5, 0) |
39 |
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#include <linux/unistd.h> |
40 |
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#endif |
41 |
kumaneko |
1052 |
|
42 |
|
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/* To support PID namespace. */ |
43 |
|
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#if LINUX_VERSION_CODE >= KERNEL_VERSION(2, 6, 24) |
44 |
kumaneko |
964 |
#define find_task_by_pid find_task_by_vpid |
45 |
|
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#endif |
46 |
kumaneko |
111 |
|
47 |
kumaneko |
1052 |
/* Set default specified by the kernel config. */ |
48 |
kumaneko |
1260 |
#ifdef CONFIG_TOMOYO |
49 |
kumaneko |
120 |
#define MAX_ACCEPT_ENTRY (CONFIG_TOMOYO_MAX_ACCEPT_ENTRY) |
50 |
kumaneko |
1052 |
#define MAX_GRANT_LOG (CONFIG_TOMOYO_MAX_GRANT_LOG) |
51 |
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#define MAX_REJECT_LOG (CONFIG_TOMOYO_MAX_REJECT_LOG) |
52 |
kumaneko |
1260 |
#else |
53 |
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#define MAX_ACCEPT_ENTRY 0 |
54 |
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#define MAX_GRANT_LOG 0 |
55 |
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#define MAX_REJECT_LOG 0 |
56 |
|
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#endif |
57 |
kumaneko |
111 |
|
58 |
kumaneko |
1052 |
/* Has /sbin/init started? */ |
59 |
kumaneko |
2040 |
bool ccs_policy_loaded; |
60 |
kumaneko |
111 |
|
61 |
kumaneko |
1052 |
/* Log level for SAKURA's printk(). */ |
62 |
kumaneko |
111 |
const char *ccs_log_level = KERN_DEBUG; |
63 |
|
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|
64 |
kumaneko |
1052 |
/* String table for functionality that takes 4 modes. */ |
65 |
kumaneko |
2002 |
static const char *ccs_mode_4[4] = { |
66 |
kumaneko |
1052 |
"disabled", "learning", "permissive", "enforcing" |
67 |
|
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}; |
68 |
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/* String table for functionality that takes 2 modes. */ |
69 |
kumaneko |
2002 |
static const char *ccs_mode_2[4] = { |
70 |
kumaneko |
1052 |
"disabled", "enabled", "enabled", "enabled" |
71 |
|
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}; |
72 |
kumaneko |
1014 |
|
73 |
kumaneko |
1052 |
/* Table for profile. */ |
74 |
kumaneko |
111 |
static struct { |
75 |
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const char *keyword; |
76 |
|
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unsigned int current_value; |
77 |
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const unsigned int max_value; |
78 |
|
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} ccs_control_array[CCS_MAX_CONTROL_INDEX] = { |
79 |
kumaneko |
2282 |
[CCS_MAC_FOR_FILE] = { "MAC_FOR_FILE", 0, 3 }, |
80 |
|
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[CCS_MAC_FOR_IOCTL] = { "MAC_FOR_IOCTL", 0, 3 }, |
81 |
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[CCS_MAC_FOR_ARGV0] = { "MAC_FOR_ARGV0", 0, 3 }, |
82 |
|
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[CCS_MAC_FOR_ENV] = { "MAC_FOR_ENV", 0, 3 }, |
83 |
|
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[CCS_MAC_FOR_NETWORK] = { "MAC_FOR_NETWORK", 0, 3 }, |
84 |
|
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[CCS_MAC_FOR_SIGNAL] = { "MAC_FOR_SIGNAL", 0, 3 }, |
85 |
|
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[CCS_DENY_CONCEAL_MOUNT] = { "DENY_CONCEAL_MOUNT", 0, 3 }, |
86 |
|
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[CCS_RESTRICT_CHROOT] = { "RESTRICT_CHROOT", 0, 3 }, |
87 |
|
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[CCS_RESTRICT_MOUNT] = { "RESTRICT_MOUNT", 0, 3 }, |
88 |
|
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[CCS_RESTRICT_UNMOUNT] = { "RESTRICT_UNMOUNT", 0, 3 }, |
89 |
|
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[CCS_RESTRICT_PIVOT_ROOT] = { "RESTRICT_PIVOT_ROOT", 0, 3 }, |
90 |
|
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[CCS_RESTRICT_AUTOBIND] = { "RESTRICT_AUTOBIND", 0, 1 }, |
91 |
|
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[CCS_MAX_ACCEPT_ENTRY] |
92 |
kumaneko |
1052 |
= { "MAX_ACCEPT_ENTRY", MAX_ACCEPT_ENTRY, INT_MAX }, |
93 |
kumaneko |
2213 |
#ifdef CONFIG_TOMOYO_AUDIT |
94 |
kumaneko |
2282 |
[CCS_MAX_GRANT_LOG] |
95 |
kumaneko |
1052 |
= { "MAX_GRANT_LOG", MAX_GRANT_LOG, INT_MAX }, |
96 |
kumaneko |
2282 |
[CCS_MAX_REJECT_LOG] |
97 |
kumaneko |
1052 |
= { "MAX_REJECT_LOG", MAX_REJECT_LOG, INT_MAX }, |
98 |
kumaneko |
2213 |
#endif |
99 |
kumaneko |
2282 |
[CCS_VERBOSE] = { "TOMOYO_VERBOSE", 1, 1 }, |
100 |
kumaneko |
1052 |
[CCS_SLEEP_PERIOD] |
101 |
|
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= { "SLEEP_PERIOD", 0, 3000 }, /* in 0.1 second */ |
102 |
kumaneko |
111 |
}; |
103 |
|
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|
104 |
kumaneko |
1015 |
#ifdef CONFIG_TOMOYO |
105 |
kumaneko |
1052 |
/* Capability name used by domain policy. */ |
106 |
kumaneko |
2282 |
static const char *ccs_capability_control_keyword[CCS_MAX_CAPABILITY_INDEX] |
107 |
kumaneko |
2002 |
= { |
108 |
kumaneko |
2282 |
[CCS_INET_STREAM_SOCKET_CREATE] = "inet_tcp_create", |
109 |
|
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[CCS_INET_STREAM_SOCKET_LISTEN] = "inet_tcp_listen", |
110 |
|
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[CCS_INET_STREAM_SOCKET_CONNECT] = "inet_tcp_connect", |
111 |
|
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[CCS_USE_INET_DGRAM_SOCKET] = "use_inet_udp", |
112 |
|
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[CCS_USE_INET_RAW_SOCKET] = "use_inet_ip", |
113 |
|
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[CCS_USE_ROUTE_SOCKET] = "use_route", |
114 |
|
|
[CCS_USE_PACKET_SOCKET] = "use_packet", |
115 |
|
|
[CCS_SYS_MOUNT] = "SYS_MOUNT", |
116 |
|
|
[CCS_SYS_UMOUNT] = "SYS_UMOUNT", |
117 |
|
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[CCS_SYS_REBOOT] = "SYS_REBOOT", |
118 |
|
|
[CCS_SYS_CHROOT] = "SYS_CHROOT", |
119 |
|
|
[CCS_SYS_KILL] = "SYS_KILL", |
120 |
|
|
[CCS_SYS_VHANGUP] = "SYS_VHANGUP", |
121 |
|
|
[CCS_SYS_SETTIME] = "SYS_TIME", |
122 |
|
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[CCS_SYS_NICE] = "SYS_NICE", |
123 |
|
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[CCS_SYS_SETHOSTNAME] = "SYS_SETHOSTNAME", |
124 |
|
|
[CCS_USE_KERNEL_MODULE] = "use_kernel_module", |
125 |
|
|
[CCS_CREATE_FIFO] = "create_fifo", |
126 |
|
|
[CCS_CREATE_BLOCK_DEV] = "create_block_dev", |
127 |
|
|
[CCS_CREATE_CHAR_DEV] = "create_char_dev", |
128 |
|
|
[CCS_CREATE_UNIX_SOCKET] = "create_unix_socket", |
129 |
|
|
[CCS_SYS_LINK] = "SYS_LINK", |
130 |
|
|
[CCS_SYS_SYMLINK] = "SYS_SYMLINK", |
131 |
|
|
[CCS_SYS_RENAME] = "SYS_RENAME", |
132 |
|
|
[CCS_SYS_UNLINK] = "SYS_UNLINK", |
133 |
|
|
[CCS_SYS_CHMOD] = "SYS_CHMOD", |
134 |
|
|
[CCS_SYS_CHOWN] = "SYS_CHOWN", |
135 |
|
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[CCS_SYS_IOCTL] = "SYS_IOCTL", |
136 |
|
|
[CCS_SYS_KEXEC_LOAD] = "SYS_KEXEC_LOAD", |
137 |
|
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[CCS_SYS_PIVOT_ROOT] = "SYS_PIVOT_ROOT", |
138 |
|
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[CCS_SYS_PTRACE] = "SYS_PTRACE", |
139 |
kumaneko |
1015 |
}; |
140 |
|
|
#endif |
141 |
|
|
|
142 |
kumaneko |
2254 |
#ifdef CONFIG_TOMOYO |
143 |
|
|
static bool ccs_profile_entry_used[CCS_MAX_CONTROL_INDEX + |
144 |
kumaneko |
2282 |
CCS_MAX_CAPABILITY_INDEX + 1]; |
145 |
kumaneko |
2254 |
#else |
146 |
|
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static bool ccs_profile_entry_used[CCS_MAX_CONTROL_INDEX + 1]; |
147 |
|
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#endif |
148 |
|
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|
149 |
kumaneko |
1052 |
/* Profile table. Memory is allocated as needed. */ |
150 |
kumaneko |
2002 |
static struct ccs_profile { |
151 |
kumaneko |
111 |
unsigned int value[CCS_MAX_CONTROL_INDEX]; |
152 |
kumaneko |
2002 |
const struct ccs_path_info *comment; |
153 |
kumaneko |
1015 |
#ifdef CONFIG_TOMOYO |
154 |
kumaneko |
2282 |
unsigned char capability_value[CCS_MAX_CAPABILITY_INDEX]; |
155 |
kumaneko |
1015 |
#endif |
156 |
kumaneko |
2002 |
} *ccs_profile_ptr[MAX_PROFILES]; |
157 |
kumaneko |
111 |
|
158 |
kumaneko |
1052 |
/* Permit policy management by non-root user? */ |
159 |
kumaneko |
2002 |
static bool ccs_manage_by_non_root; |
160 |
kumaneko |
111 |
|
161 |
kumaneko |
1052 |
/* Utility functions. */ |
162 |
kumaneko |
111 |
|
163 |
|
|
#ifdef CONFIG_TOMOYO |
164 |
kumaneko |
1052 |
/** |
165 |
kumaneko |
2282 |
* ccs_quiet_setup - Set CCS_VERBOSE=0 by default. |
166 |
kumaneko |
1052 |
* |
167 |
|
|
* @str: Unused. |
168 |
|
|
* |
169 |
|
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* Returns 0. |
170 |
|
|
*/ |
171 |
kumaneko |
2002 |
static int __init ccs_quiet_setup(char *str) |
172 |
kumaneko |
111 |
{ |
173 |
kumaneko |
2282 |
ccs_control_array[CCS_VERBOSE].current_value = 0; |
174 |
kumaneko |
111 |
return 0; |
175 |
|
|
} |
176 |
|
|
|
177 |
kumaneko |
2282 |
__setup("CCS_QUIET", ccs_quiet_setup); |
178 |
kumaneko |
111 |
#endif |
179 |
|
|
|
180 |
kumaneko |
1052 |
/** |
181 |
kumaneko |
2002 |
* ccs_is_byte_range - Check whether the string isa \ooo style octal value. |
182 |
kumaneko |
1052 |
* |
183 |
|
|
* @str: Pointer to the string. |
184 |
|
|
* |
185 |
|
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* Returns true if @str is a \ooo style octal value, false otherwise. |
186 |
|
|
*/ |
187 |
kumaneko |
2002 |
static inline bool ccs_is_byte_range(const char *str) |
188 |
kumaneko |
1052 |
{ |
189 |
|
|
return *str >= '0' && *str++ <= '3' && |
190 |
|
|
*str >= '0' && *str++ <= '7' && |
191 |
|
|
*str >= '0' && *str <= '7'; |
192 |
|
|
} |
193 |
|
|
|
194 |
|
|
/** |
195 |
kumaneko |
2002 |
* ccs_is_decimal - Check whether the character is a decimal character. |
196 |
kumaneko |
1052 |
* |
197 |
|
|
* @c: The character to check. |
198 |
|
|
* |
199 |
|
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* Returns true if @c is a decimal character, false otherwise. |
200 |
|
|
*/ |
201 |
kumaneko |
2002 |
static inline bool ccs_is_decimal(const char c) |
202 |
kumaneko |
1052 |
{ |
203 |
kumaneko |
1468 |
return c >= '0' && c <= '9'; |
204 |
kumaneko |
1052 |
} |
205 |
|
|
|
206 |
|
|
/** |
207 |
kumaneko |
2002 |
* ccs_is_hexadecimal - Check whether the character is a hexadecimal character. |
208 |
kumaneko |
1052 |
* |
209 |
|
|
* @c: The character to check. |
210 |
|
|
* |
211 |
|
|
* Returns true if @c is a hexadecimal character, false otherwise. |
212 |
|
|
*/ |
213 |
kumaneko |
2002 |
static inline bool ccs_is_hexadecimal(const char c) |
214 |
kumaneko |
1052 |
{ |
215 |
kumaneko |
1468 |
return (c >= '0' && c <= '9') || |
216 |
kumaneko |
1052 |
(c >= 'A' && c <= 'F') || |
217 |
kumaneko |
1468 |
(c >= 'a' && c <= 'f'); |
218 |
kumaneko |
1052 |
} |
219 |
|
|
|
220 |
|
|
/** |
221 |
kumaneko |
2002 |
* ccs_is_alphabet_char - Check whether the character is an alphabet. |
222 |
kumaneko |
1052 |
* |
223 |
|
|
* @c: The character to check. |
224 |
|
|
* |
225 |
|
|
* Returns true if @c is an alphabet character, false otherwise. |
226 |
|
|
*/ |
227 |
kumaneko |
2002 |
static inline bool ccs_is_alphabet_char(const char c) |
228 |
kumaneko |
1052 |
{ |
229 |
kumaneko |
1794 |
return (c >= 'A' && c <= 'Z') || (c >= 'a' && c <= 'z'); |
230 |
kumaneko |
1052 |
} |
231 |
|
|
|
232 |
|
|
/** |
233 |
kumaneko |
2002 |
* ccs_make_byte - Make byte value from three octal characters. |
234 |
kumaneko |
1064 |
* |
235 |
|
|
* @c1: The first character. |
236 |
|
|
* @c2: The second character. |
237 |
|
|
* @c3: The third character. |
238 |
|
|
* |
239 |
|
|
* Returns byte value. |
240 |
|
|
*/ |
241 |
kumaneko |
2002 |
static inline u8 ccs_make_byte(const u8 c1, const u8 c2, const u8 c3) |
242 |
kumaneko |
1064 |
{ |
243 |
|
|
return ((c1 - '0') << 6) + ((c2 - '0') << 3) + (c3 - '0'); |
244 |
|
|
} |
245 |
|
|
|
246 |
|
|
/** |
247 |
kumaneko |
2002 |
* ccs_str_starts - Check whether the given string starts with the given keyword. |
248 |
kumaneko |
1052 |
* |
249 |
|
|
* @src: Pointer to pointer to the string. |
250 |
|
|
* @find: Pointer to the keyword. |
251 |
|
|
* |
252 |
|
|
* Returns true if @src starts with @find, false otherwise. |
253 |
|
|
* |
254 |
|
|
* The @src is updated to point the first character after the @find |
255 |
kumaneko |
1064 |
* if @src starts with @find. |
256 |
kumaneko |
1052 |
*/ |
257 |
kumaneko |
2002 |
static bool ccs_str_starts(char **src, const char *find) |
258 |
kumaneko |
1052 |
{ |
259 |
|
|
const int len = strlen(find); |
260 |
|
|
char *tmp = *src; |
261 |
|
|
if (strncmp(tmp, find, len)) |
262 |
|
|
return false; |
263 |
|
|
tmp += len; |
264 |
|
|
*src = tmp; |
265 |
|
|
return true; |
266 |
|
|
} |
267 |
|
|
|
268 |
|
|
/** |
269 |
kumaneko |
2002 |
* ccs_normalize_line - Format string. |
270 |
kumaneko |
1052 |
* |
271 |
|
|
* @buffer: The line to normalize. |
272 |
|
|
* |
273 |
kumaneko |
111 |
* Leading and trailing whitespaces are removed. |
274 |
|
|
* Multiple whitespaces are packed into single space. |
275 |
kumaneko |
1052 |
* |
276 |
|
|
* Returns nothing. |
277 |
kumaneko |
111 |
*/ |
278 |
kumaneko |
2308 |
void ccs_normalize_line(unsigned char *buffer) |
279 |
kumaneko |
111 |
{ |
280 |
kumaneko |
1064 |
unsigned char *sp = buffer; |
281 |
|
|
unsigned char *dp = buffer; |
282 |
kumaneko |
1006 |
bool first = true; |
283 |
kumaneko |
1052 |
while (*sp && (*sp <= ' ' || *sp >= 127)) |
284 |
|
|
sp++; |
285 |
kumaneko |
111 |
while (*sp) { |
286 |
kumaneko |
1052 |
if (!first) |
287 |
|
|
*dp++ = ' '; |
288 |
kumaneko |
1006 |
first = false; |
289 |
kumaneko |
1052 |
while (*sp > ' ' && *sp < 127) |
290 |
|
|
*dp++ = *sp++; |
291 |
|
|
while (*sp && (*sp <= ' ' || *sp >= 127)) |
292 |
|
|
sp++; |
293 |
kumaneko |
111 |
} |
294 |
|
|
*dp = '\0'; |
295 |
|
|
} |
296 |
|
|
|
297 |
kumaneko |
1052 |
/** |
298 |
kumaneko |
1054 |
* ccs_is_correct_path - Validate a pathname. |
299 |
|
|
* @filename: The pathname to check. |
300 |
|
|
* @start_type: Should the pathname start with '/'? |
301 |
|
|
* 1 = must / -1 = must not / 0 = don't care |
302 |
|
|
* @pattern_type: Can the pathname contain a wildcard? |
303 |
|
|
* 1 = must / -1 = must not / 0 = don't care |
304 |
|
|
* @end_type: Should the pathname end with '/'? |
305 |
|
|
* 1 = must / -1 = must not / 0 = don't care |
306 |
|
|
* @function: The name of function calling me. |
307 |
kumaneko |
1052 |
* |
308 |
kumaneko |
1054 |
* Check whether the given filename follows the naming rules. |
309 |
kumaneko |
1052 |
* Returns true if @filename follows the naming rules, false otherwise. |
310 |
kumaneko |
111 |
*/ |
311 |
kumaneko |
1052 |
bool ccs_is_correct_path(const char *filename, const s8 start_type, |
312 |
|
|
const s8 pattern_type, const s8 end_type, |
313 |
|
|
const char *function) |
314 |
kumaneko |
111 |
{ |
315 |
kumaneko |
1006 |
bool contains_pattern = false; |
316 |
kumaneko |
1064 |
unsigned char c; |
317 |
|
|
unsigned char d; |
318 |
|
|
unsigned char e; |
319 |
kumaneko |
111 |
const char *original_filename = filename; |
320 |
kumaneko |
1052 |
if (!filename) |
321 |
|
|
goto out; |
322 |
kumaneko |
111 |
c = *filename; |
323 |
|
|
if (start_type == 1) { /* Must start with '/' */ |
324 |
kumaneko |
1052 |
if (c != '/') |
325 |
|
|
goto out; |
326 |
kumaneko |
111 |
} else if (start_type == -1) { /* Must not start with '/' */ |
327 |
kumaneko |
1052 |
if (c == '/') |
328 |
|
|
goto out; |
329 |
kumaneko |
111 |
} |
330 |
kumaneko |
1052 |
if (c) |
331 |
kumaneko |
1795 |
c = *(filename + strlen(filename) - 1); |
332 |
kumaneko |
111 |
if (end_type == 1) { /* Must end with '/' */ |
333 |
kumaneko |
1052 |
if (c != '/') |
334 |
|
|
goto out; |
335 |
kumaneko |
111 |
} else if (end_type == -1) { /* Must not end with '/' */ |
336 |
kumaneko |
1052 |
if (c == '/') |
337 |
|
|
goto out; |
338 |
kumaneko |
111 |
} |
339 |
kumaneko |
1747 |
while (1) { |
340 |
|
|
c = *filename++; |
341 |
|
|
if (!c) |
342 |
|
|
break; |
343 |
kumaneko |
111 |
if (c == '\\') { |
344 |
kumaneko |
1747 |
c = *filename++; |
345 |
|
|
switch (c) { |
346 |
kumaneko |
111 |
case '\\': /* "\\" */ |
347 |
|
|
continue; |
348 |
|
|
case '$': /* "\$" */ |
349 |
|
|
case '+': /* "\+" */ |
350 |
|
|
case '?': /* "\?" */ |
351 |
|
|
case '*': /* "\*" */ |
352 |
|
|
case '@': /* "\@" */ |
353 |
|
|
case 'x': /* "\x" */ |
354 |
|
|
case 'X': /* "\X" */ |
355 |
|
|
case 'a': /* "\a" */ |
356 |
|
|
case 'A': /* "\A" */ |
357 |
kumaneko |
206 |
case '-': /* "\-" */ |
358 |
kumaneko |
1052 |
if (pattern_type == -1) |
359 |
|
|
break; /* Must not contain pattern */ |
360 |
kumaneko |
1006 |
contains_pattern = true; |
361 |
kumaneko |
111 |
continue; |
362 |
|
|
case '0': /* "\ooo" */ |
363 |
|
|
case '1': |
364 |
|
|
case '2': |
365 |
|
|
case '3': |
366 |
kumaneko |
1052 |
d = *filename++; |
367 |
|
|
if (d < '0' || d > '7') |
368 |
|
|
break; |
369 |
|
|
e = *filename++; |
370 |
|
|
if (e < '0' || e > '7') |
371 |
|
|
break; |
372 |
kumaneko |
2002 |
c = ccs_make_byte(c, d, e); |
373 |
kumaneko |
1052 |
if (c && (c <= ' ' || c >= 127)) |
374 |
|
|
continue; /* pattern is not \000 */ |
375 |
kumaneko |
111 |
} |
376 |
|
|
goto out; |
377 |
|
|
} else if (c <= ' ' || c >= 127) { |
378 |
|
|
goto out; |
379 |
|
|
} |
380 |
|
|
} |
381 |
|
|
if (pattern_type == 1) { /* Must contain pattern */ |
382 |
kumaneko |
1052 |
if (!contains_pattern) |
383 |
|
|
goto out; |
384 |
kumaneko |
111 |
} |
385 |
kumaneko |
1006 |
return true; |
386 |
kumaneko |
111 |
out: |
387 |
kumaneko |
1052 |
printk(KERN_DEBUG "%s: Invalid pathname '%s'\n", function, |
388 |
|
|
original_filename); |
389 |
kumaneko |
1006 |
return false; |
390 |
kumaneko |
111 |
} |
391 |
|
|
|
392 |
kumaneko |
1052 |
/** |
393 |
kumaneko |
1054 |
* ccs_is_correct_domain - Check whether the given domainname follows the naming rules. |
394 |
|
|
* @domainname: The domainname to check. |
395 |
|
|
* @function: The name of function calling me. |
396 |
kumaneko |
1052 |
* |
397 |
|
|
* Returns true if @domainname follows the naming rules, false otherwise. |
398 |
kumaneko |
111 |
*/ |
399 |
kumaneko |
1052 |
bool ccs_is_correct_domain(const unsigned char *domainname, |
400 |
|
|
const char *function) |
401 |
kumaneko |
111 |
{ |
402 |
kumaneko |
1064 |
unsigned char c; |
403 |
|
|
unsigned char d; |
404 |
|
|
unsigned char e; |
405 |
kumaneko |
111 |
const char *org_domainname = domainname; |
406 |
kumaneko |
1052 |
if (!domainname || strncmp(domainname, ROOT_NAME, ROOT_NAME_LEN)) |
407 |
|
|
goto out; |
408 |
kumaneko |
111 |
domainname += ROOT_NAME_LEN; |
409 |
kumaneko |
1052 |
if (!*domainname) |
410 |
|
|
return true; |
411 |
kumaneko |
111 |
do { |
412 |
kumaneko |
1052 |
if (*domainname++ != ' ') |
413 |
|
|
goto out; |
414 |
|
|
if (*domainname++ != '/') |
415 |
|
|
goto out; |
416 |
kumaneko |
1747 |
while (1) { |
417 |
|
|
c = *domainname; |
418 |
|
|
if (!c || c == ' ') |
419 |
|
|
break; |
420 |
kumaneko |
111 |
domainname++; |
421 |
|
|
if (c == '\\') { |
422 |
kumaneko |
1052 |
c = *domainname++; |
423 |
|
|
switch ((c)) { |
424 |
kumaneko |
111 |
case '\\': /* "\\" */ |
425 |
|
|
continue; |
426 |
|
|
case '0': /* "\ooo" */ |
427 |
|
|
case '1': |
428 |
|
|
case '2': |
429 |
|
|
case '3': |
430 |
kumaneko |
1052 |
d = *domainname++; |
431 |
|
|
if (d < '0' || d > '7') |
432 |
|
|
break; |
433 |
|
|
e = *domainname++; |
434 |
|
|
if (e < '0' || e > '7') |
435 |
|
|
break; |
436 |
kumaneko |
2002 |
c = ccs_make_byte(c, d, e); |
437 |
kumaneko |
1052 |
if (c && (c <= ' ' || c >= 127)) |
438 |
|
|
/* pattern is not \000 */ |
439 |
|
|
continue; |
440 |
kumaneko |
111 |
} |
441 |
|
|
goto out; |
442 |
|
|
} else if (c < ' ' || c >= 127) { |
443 |
|
|
goto out; |
444 |
|
|
} |
445 |
|
|
} |
446 |
|
|
} while (*domainname); |
447 |
kumaneko |
1006 |
return true; |
448 |
kumaneko |
111 |
out: |
449 |
kumaneko |
1052 |
printk(KERN_DEBUG "%s: Invalid domainname '%s'\n", function, |
450 |
|
|
org_domainname); |
451 |
kumaneko |
1006 |
return false; |
452 |
kumaneko |
111 |
} |
453 |
|
|
|
454 |
kumaneko |
1052 |
/** |
455 |
|
|
* ccs_is_domain_def - Check whether the given token can be a domainname. |
456 |
|
|
* |
457 |
|
|
* @buffer: The token to check. |
458 |
|
|
* |
459 |
|
|
* Returns true if @buffer possibly be a domainname, false otherwise. |
460 |
|
|
*/ |
461 |
|
|
bool ccs_is_domain_def(const unsigned char *buffer) |
462 |
kumaneko |
461 |
{ |
463 |
kumaneko |
1052 |
return !strncmp(buffer, ROOT_NAME, ROOT_NAME_LEN); |
464 |
kumaneko |
461 |
} |
465 |
|
|
|
466 |
kumaneko |
1052 |
/** |
467 |
|
|
* ccs_find_domain - Find a domain by the given name. |
468 |
|
|
* |
469 |
kumaneko |
1054 |
* @domainname: The domainname to find. |
470 |
kumaneko |
1052 |
* |
471 |
kumaneko |
2282 |
* Returns pointer to "struct ccs_domain_info" if found, NULL otherwise. |
472 |
kumaneko |
1052 |
*/ |
473 |
kumaneko |
2282 |
struct ccs_domain_info *ccs_find_domain(const char *domainname) |
474 |
kumaneko |
461 |
{ |
475 |
kumaneko |
2282 |
struct ccs_domain_info *domain; |
476 |
kumaneko |
2002 |
struct ccs_path_info name; |
477 |
kumaneko |
1052 |
name.name = domainname; |
478 |
|
|
ccs_fill_path_info(&name); |
479 |
kumaneko |
2002 |
list1_for_each_entry(domain, &ccs_domain_list, list) { |
480 |
kumaneko |
1052 |
if (!domain->is_deleted && |
481 |
|
|
!ccs_pathcmp(&name, domain->domainname)) |
482 |
|
|
return domain; |
483 |
kumaneko |
461 |
} |
484 |
|
|
return NULL; |
485 |
|
|
} |
486 |
|
|
|
487 |
kumaneko |
1052 |
/** |
488 |
kumaneko |
2002 |
* ccs_path_depth - Evaluate the number of '/' in a string. |
489 |
kumaneko |
1052 |
* |
490 |
|
|
* @pathname: The string to evaluate. |
491 |
|
|
* |
492 |
|
|
* Returns path depth of the string. |
493 |
|
|
* |
494 |
|
|
* I score 2 for each of the '/' in the @pathname |
495 |
|
|
* and score 1 if the @pathname ends with '/'. |
496 |
|
|
*/ |
497 |
kumaneko |
2002 |
static int ccs_path_depth(const char *pathname) |
498 |
kumaneko |
111 |
{ |
499 |
|
|
int i = 0; |
500 |
|
|
if (pathname) { |
501 |
kumaneko |
1795 |
const char *ep = pathname + strlen(pathname); |
502 |
kumaneko |
111 |
if (pathname < ep--) { |
503 |
kumaneko |
1052 |
if (*ep != '/') |
504 |
|
|
i++; |
505 |
|
|
while (pathname <= ep) |
506 |
|
|
if (*ep-- == '/') |
507 |
|
|
i += 2; |
508 |
kumaneko |
111 |
} |
509 |
|
|
} |
510 |
|
|
return i; |
511 |
|
|
} |
512 |
|
|
|
513 |
kumaneko |
1052 |
/** |
514 |
kumaneko |
2002 |
* ccs_const_part_length - Evaluate the initial length without a pattern in a token. |
515 |
kumaneko |
1052 |
* |
516 |
|
|
* @filename: The string to evaluate. |
517 |
|
|
* |
518 |
kumaneko |
1064 |
* Returns the initial length without a pattern in @filename. |
519 |
kumaneko |
1052 |
*/ |
520 |
kumaneko |
2002 |
static int ccs_const_part_length(const char *filename) |
521 |
kumaneko |
111 |
{ |
522 |
kumaneko |
1052 |
char c; |
523 |
kumaneko |
111 |
int len = 0; |
524 |
kumaneko |
1052 |
if (!filename) |
525 |
|
|
return 0; |
526 |
kumaneko |
1747 |
while (1) { |
527 |
|
|
c = *filename++; |
528 |
|
|
if (!c) |
529 |
|
|
break; |
530 |
kumaneko |
1052 |
if (c != '\\') { |
531 |
|
|
len++; |
532 |
|
|
continue; |
533 |
kumaneko |
111 |
} |
534 |
kumaneko |
1052 |
c = *filename++; |
535 |
|
|
switch (c) { |
536 |
|
|
case '\\': /* "\\" */ |
537 |
|
|
len += 2; |
538 |
|
|
continue; |
539 |
|
|
case '0': /* "\ooo" */ |
540 |
|
|
case '1': |
541 |
|
|
case '2': |
542 |
|
|
case '3': |
543 |
|
|
c = *filename++; |
544 |
|
|
if (c < '0' || c > '7') |
545 |
|
|
break; |
546 |
|
|
c = *filename++; |
547 |
|
|
if (c < '0' || c > '7') |
548 |
|
|
break; |
549 |
|
|
len += 4; |
550 |
|
|
continue; |
551 |
|
|
} |
552 |
|
|
break; |
553 |
kumaneko |
111 |
} |
554 |
|
|
return len; |
555 |
|
|
} |
556 |
|
|
|
557 |
kumaneko |
1052 |
/** |
558 |
kumaneko |
2002 |
* ccs_fill_path_info - Fill in "struct ccs_path_info" members. |
559 |
kumaneko |
1052 |
* |
560 |
kumaneko |
2002 |
* @ptr: Pointer to "struct ccs_path_info" to fill in. |
561 |
kumaneko |
1052 |
* |
562 |
kumaneko |
2002 |
* The caller sets "struct ccs_path_info"->name. |
563 |
kumaneko |
1052 |
*/ |
564 |
kumaneko |
2002 |
void ccs_fill_path_info(struct ccs_path_info *ptr) |
565 |
kumaneko |
111 |
{ |
566 |
|
|
const char *name = ptr->name; |
567 |
|
|
const int len = strlen(name); |
568 |
|
|
ptr->total_len = len; |
569 |
kumaneko |
2002 |
ptr->const_len = ccs_const_part_length(name); |
570 |
kumaneko |
111 |
ptr->is_dir = len && (name[len - 1] == '/'); |
571 |
|
|
ptr->is_patterned = (ptr->const_len < len); |
572 |
|
|
ptr->hash = full_name_hash(name, len); |
573 |
kumaneko |
2002 |
ptr->depth = ccs_path_depth(name); |
574 |
kumaneko |
111 |
} |
575 |
|
|
|
576 |
kumaneko |
1052 |
/** |
577 |
kumaneko |
2039 |
* ccs_file_matches_pattern2 - Pattern matching without '/' character |
578 |
kumaneko |
1052 |
* and "\-" pattern. |
579 |
|
|
* |
580 |
|
|
* @filename: The start of string to check. |
581 |
|
|
* @filename_end: The end of string to check. |
582 |
|
|
* @pattern: The start of pattern to compare. |
583 |
|
|
* @pattern_end: The end of pattern to compare. |
584 |
|
|
* |
585 |
|
|
* Returns true if @filename matches @pattern, false otherwise. |
586 |
|
|
*/ |
587 |
kumaneko |
2039 |
static bool ccs_file_matches_pattern2(const char *filename, |
588 |
|
|
const char *filename_end, |
589 |
|
|
const char *pattern, |
590 |
|
|
const char *pattern_end) |
591 |
kumaneko |
111 |
{ |
592 |
|
|
while (filename < filename_end && pattern < pattern_end) { |
593 |
kumaneko |
1052 |
char c; |
594 |
kumaneko |
111 |
if (*pattern != '\\') { |
595 |
kumaneko |
1052 |
if (*filename++ != *pattern++) |
596 |
|
|
return false; |
597 |
|
|
continue; |
598 |
|
|
} |
599 |
|
|
c = *filename; |
600 |
|
|
pattern++; |
601 |
|
|
switch (*pattern) { |
602 |
kumaneko |
1064 |
int i; |
603 |
|
|
int j; |
604 |
kumaneko |
1052 |
case '?': |
605 |
|
|
if (c == '/') { |
606 |
|
|
return false; |
607 |
|
|
} else if (c == '\\') { |
608 |
|
|
if (filename[1] == '\\') |
609 |
|
|
filename++; |
610 |
kumaneko |
2002 |
else if (ccs_is_byte_range(filename + 1)) |
611 |
kumaneko |
1052 |
filename += 3; |
612 |
|
|
else |
613 |
kumaneko |
1006 |
return false; |
614 |
kumaneko |
1052 |
} |
615 |
|
|
break; |
616 |
|
|
case '\\': |
617 |
|
|
if (c != '\\') |
618 |
|
|
return false; |
619 |
|
|
if (*++filename != '\\') |
620 |
|
|
return false; |
621 |
|
|
break; |
622 |
|
|
case '+': |
623 |
kumaneko |
2002 |
if (!ccs_is_decimal(c)) |
624 |
kumaneko |
1052 |
return false; |
625 |
|
|
break; |
626 |
|
|
case 'x': |
627 |
kumaneko |
2002 |
if (!ccs_is_hexadecimal(c)) |
628 |
kumaneko |
1052 |
return false; |
629 |
|
|
break; |
630 |
|
|
case 'a': |
631 |
kumaneko |
2002 |
if (!ccs_is_alphabet_char(c)) |
632 |
kumaneko |
1052 |
return false; |
633 |
|
|
break; |
634 |
|
|
case '0': |
635 |
|
|
case '1': |
636 |
|
|
case '2': |
637 |
|
|
case '3': |
638 |
kumaneko |
2002 |
if (c == '\\' && ccs_is_byte_range(filename + 1) |
639 |
kumaneko |
1052 |
&& strncmp(filename + 1, pattern, 3) == 0) { |
640 |
|
|
filename += 3; |
641 |
|
|
pattern += 2; |
642 |
kumaneko |
111 |
break; |
643 |
kumaneko |
1052 |
} |
644 |
|
|
return false; /* Not matched. */ |
645 |
|
|
case '*': |
646 |
|
|
case '@': |
647 |
|
|
for (i = 0; i <= filename_end - filename; i++) { |
648 |
kumaneko |
2039 |
if (ccs_file_matches_pattern2(filename + i, |
649 |
|
|
filename_end, |
650 |
|
|
pattern + 1, |
651 |
|
|
pattern_end)) |
652 |
kumaneko |
1052 |
return true; |
653 |
|
|
c = filename[i]; |
654 |
|
|
if (c == '.' && *pattern == '@') |
655 |
kumaneko |
111 |
break; |
656 |
kumaneko |
1052 |
if (c != '\\') |
657 |
|
|
continue; |
658 |
|
|
if (filename[i + 1] == '\\') |
659 |
|
|
i++; |
660 |
kumaneko |
2002 |
else if (ccs_is_byte_range(filename + i + 1)) |
661 |
kumaneko |
1052 |
i += 3; |
662 |
|
|
else |
663 |
|
|
break; /* Bad pattern. */ |
664 |
kumaneko |
111 |
} |
665 |
kumaneko |
1052 |
return false; /* Not matched. */ |
666 |
|
|
default: |
667 |
|
|
j = 0; |
668 |
|
|
c = *pattern; |
669 |
|
|
if (c == '$') { |
670 |
kumaneko |
2002 |
while (ccs_is_decimal(filename[j])) |
671 |
kumaneko |
1052 |
j++; |
672 |
|
|
} else if (c == 'X') { |
673 |
kumaneko |
2002 |
while (ccs_is_hexadecimal(filename[j])) |
674 |
kumaneko |
1052 |
j++; |
675 |
|
|
} else if (c == 'A') { |
676 |
kumaneko |
2002 |
while (ccs_is_alphabet_char(filename[j])) |
677 |
kumaneko |
1052 |
j++; |
678 |
|
|
} |
679 |
|
|
for (i = 1; i <= j; i++) { |
680 |
kumaneko |
2039 |
if (ccs_file_matches_pattern2(filename + i, |
681 |
|
|
filename_end, |
682 |
|
|
pattern + 1, |
683 |
|
|
pattern_end)) |
684 |
kumaneko |
1052 |
return true; |
685 |
|
|
} |
686 |
|
|
return false; /* Not matched or bad pattern. */ |
687 |
kumaneko |
111 |
} |
688 |
kumaneko |
1052 |
filename++; |
689 |
|
|
pattern++; |
690 |
kumaneko |
111 |
} |
691 |
kumaneko |
1052 |
while (*pattern == '\\' && |
692 |
|
|
(*(pattern + 1) == '*' || *(pattern + 1) == '@')) |
693 |
|
|
pattern += 2; |
694 |
kumaneko |
1468 |
return filename == filename_end && pattern == pattern_end; |
695 |
kumaneko |
111 |
} |
696 |
|
|
|
697 |
kumaneko |
1052 |
/** |
698 |
kumaneko |
2039 |
* ccs_file_matches_pattern - Pattern matching without without '/' character. |
699 |
kumaneko |
1052 |
* |
700 |
|
|
* @filename: The start of string to check. |
701 |
|
|
* @filename_end: The end of string to check. |
702 |
|
|
* @pattern: The start of pattern to compare. |
703 |
|
|
* @pattern_end: The end of pattern to compare. |
704 |
|
|
* |
705 |
|
|
* Returns true if @filename matches @pattern, false otherwise. |
706 |
|
|
*/ |
707 |
kumaneko |
2039 |
static bool ccs_file_matches_pattern(const char *filename, |
708 |
|
|
const char *filename_end, |
709 |
|
|
const char *pattern, |
710 |
|
|
const char *pattern_end) |
711 |
kumaneko |
206 |
{ |
712 |
|
|
const char *pattern_start = pattern; |
713 |
kumaneko |
1006 |
bool first = true; |
714 |
|
|
bool result; |
715 |
kumaneko |
206 |
while (pattern < pattern_end - 1) { |
716 |
kumaneko |
1052 |
/* Split at "\-" pattern. */ |
717 |
|
|
if (*pattern++ != '\\' || *pattern++ != '-') |
718 |
|
|
continue; |
719 |
kumaneko |
2039 |
result = ccs_file_matches_pattern2(filename, filename_end, |
720 |
kumaneko |
2040 |
pattern_start, pattern - 2); |
721 |
kumaneko |
1052 |
if (first) |
722 |
|
|
result = !result; |
723 |
|
|
if (result) |
724 |
|
|
return false; |
725 |
kumaneko |
1006 |
first = false; |
726 |
kumaneko |
206 |
pattern_start = pattern; |
727 |
|
|
} |
728 |
kumaneko |
2039 |
result = ccs_file_matches_pattern2(filename, filename_end, |
729 |
|
|
pattern_start, pattern_end); |
730 |
kumaneko |
206 |
return first ? result : !result; |
731 |
|
|
} |
732 |
|
|
|
733 |
kumaneko |
1052 |
/** |
734 |
kumaneko |
1054 |
* ccs_path_matches_pattern - Check whether the given filename matches the given pattern. |
735 |
kumaneko |
1052 |
* @filename: The filename to check. |
736 |
|
|
* @pattern: The pattern to compare. |
737 |
kumaneko |
111 |
* |
738 |
kumaneko |
1052 |
* Returns true if matches, false otherwise. |
739 |
|
|
* |
740 |
|
|
* The following patterns are available. |
741 |
|
|
* \\ \ itself. |
742 |
|
|
* \ooo Octal representation of a byte. |
743 |
|
|
* \* More than or equals to 0 character other than '/'. |
744 |
|
|
* \@ More than or equals to 0 character other than '/' or '.'. |
745 |
|
|
* \? 1 byte character other than '/'. |
746 |
|
|
* \$ More than or equals to 1 decimal digit. |
747 |
|
|
* \+ 1 decimal digit. |
748 |
|
|
* \X More than or equals to 1 hexadecimal digit. |
749 |
|
|
* \x 1 hexadecimal digit. |
750 |
|
|
* \A More than or equals to 1 alphabet character. |
751 |
|
|
* \a 1 alphabet character. |
752 |
|
|
* \- Subtraction operator. |
753 |
kumaneko |
111 |
*/ |
754 |
kumaneko |
2002 |
bool ccs_path_matches_pattern(const struct ccs_path_info *filename, |
755 |
|
|
const struct ccs_path_info *pattern) |
756 |
kumaneko |
111 |
{ |
757 |
kumaneko |
1052 |
/* |
758 |
|
|
if (!filename || !pattern) |
759 |
|
|
return false; |
760 |
|
|
*/ |
761 |
|
|
const char *f = filename->name; |
762 |
|
|
const char *p = pattern->name; |
763 |
|
|
const int len = pattern->const_len; |
764 |
|
|
/* If @pattern doesn't contain pattern, I can use strcmp(). */ |
765 |
|
|
if (!pattern->is_patterned) |
766 |
|
|
return !ccs_pathcmp(filename, pattern); |
767 |
|
|
/* Dont compare if the number of '/' differs. */ |
768 |
|
|
if (filename->depth != pattern->depth) |
769 |
|
|
return false; |
770 |
|
|
/* Compare the initial length without patterns. */ |
771 |
|
|
if (strncmp(f, p, len)) |
772 |
|
|
return false; |
773 |
|
|
f += len; |
774 |
|
|
p += len; |
775 |
|
|
/* Main loop. Compare each directory component. */ |
776 |
|
|
while (*f && *p) { |
777 |
|
|
const char *f_delimiter = strchr(f, '/'); |
778 |
|
|
const char *p_delimiter = strchr(p, '/'); |
779 |
|
|
if (!f_delimiter) |
780 |
kumaneko |
1795 |
f_delimiter = f + strlen(f); |
781 |
kumaneko |
1052 |
if (!p_delimiter) |
782 |
kumaneko |
1795 |
p_delimiter = p + strlen(p); |
783 |
kumaneko |
2040 |
if (!ccs_file_matches_pattern(f, f_delimiter, p, p_delimiter)) |
784 |
kumaneko |
1052 |
return false; |
785 |
|
|
f = f_delimiter; |
786 |
|
|
if (*f) |
787 |
|
|
f++; |
788 |
|
|
p = p_delimiter; |
789 |
|
|
if (*p) |
790 |
|
|
p++; |
791 |
kumaneko |
111 |
} |
792 |
kumaneko |
1052 |
/* Ignore trailing "\*" and "\@" in @pattern. */ |
793 |
|
|
while (*p == '\\' && |
794 |
|
|
(*(p + 1) == '*' || *(p + 1) == '@')) |
795 |
|
|
p += 2; |
796 |
kumaneko |
1468 |
return !*f && !*p; |
797 |
kumaneko |
111 |
} |
798 |
|
|
|
799 |
kumaneko |
1052 |
/** |
800 |
|
|
* ccs_io_printf - Transactional printf() to "struct ccs_io_buffer" structure. |
801 |
|
|
* |
802 |
|
|
* @head: Pointer to "struct ccs_io_buffer". |
803 |
|
|
* @fmt: The printf()'s format string, followed by parameters. |
804 |
|
|
* |
805 |
|
|
* Returns true on success, false otherwise. |
806 |
|
|
* |
807 |
|
|
* The snprintf() will truncate, but ccs_io_printf() won't. |
808 |
kumaneko |
111 |
*/ |
809 |
kumaneko |
1052 |
bool ccs_io_printf(struct ccs_io_buffer *head, const char *fmt, ...) |
810 |
kumaneko |
111 |
{ |
811 |
|
|
va_list args; |
812 |
kumaneko |
1064 |
int len; |
813 |
|
|
int pos = head->read_avail; |
814 |
|
|
int size = head->readbuf_size - pos; |
815 |
kumaneko |
1052 |
if (size <= 0) |
816 |
|
|
return false; |
817 |
kumaneko |
111 |
va_start(args, fmt); |
818 |
|
|
len = vsnprintf(head->read_buf + pos, size, fmt, args); |
819 |
|
|
va_end(args); |
820 |
kumaneko |
1052 |
if (pos + len >= head->readbuf_size) |
821 |
|
|
return false; |
822 |
kumaneko |
111 |
head->read_avail += len; |
823 |
kumaneko |
1052 |
return true; |
824 |
kumaneko |
111 |
} |
825 |
|
|
|
826 |
kumaneko |
1052 |
/** |
827 |
|
|
* ccs_get_exe - Get ccs_realpath() of current process. |
828 |
|
|
* |
829 |
|
|
* Returns the ccs_realpath() of current process on success, NULL otherwise. |
830 |
|
|
* |
831 |
|
|
* This function uses ccs_alloc(), so the caller must ccs_free() |
832 |
|
|
* if this function didn't return NULL. |
833 |
kumaneko |
111 |
*/ |
834 |
kumaneko |
1052 |
const char *ccs_get_exe(void) |
835 |
kumaneko |
111 |
{ |
836 |
kumaneko |
737 |
struct mm_struct *mm = current->mm; |
837 |
|
|
struct vm_area_struct *vma; |
838 |
|
|
const char *cp = NULL; |
839 |
kumaneko |
1052 |
if (!mm) |
840 |
|
|
return NULL; |
841 |
kumaneko |
737 |
down_read(&mm->mmap_sem); |
842 |
|
|
for (vma = mm->mmap; vma; vma = vma->vm_next) { |
843 |
|
|
if ((vma->vm_flags & VM_EXECUTABLE) && vma->vm_file) { |
844 |
kumaneko |
1052 |
cp = ccs_realpath_from_dentry(vma->vm_file->f_dentry, |
845 |
|
|
vma->vm_file->f_vfsmnt); |
846 |
kumaneko |
737 |
break; |
847 |
kumaneko |
111 |
} |
848 |
|
|
} |
849 |
kumaneko |
737 |
up_read(&mm->mmap_sem); |
850 |
|
|
return cp; |
851 |
kumaneko |
111 |
} |
852 |
|
|
|
853 |
kumaneko |
1052 |
/** |
854 |
|
|
* ccs_get_msg - Get warning message. |
855 |
|
|
* |
856 |
|
|
* @is_enforce: Is it enforcing mode? |
857 |
|
|
* |
858 |
|
|
* Returns "ERROR" or "WARNING". |
859 |
|
|
*/ |
860 |
|
|
const char *ccs_get_msg(const bool is_enforce) |
861 |
kumaneko |
111 |
{ |
862 |
kumaneko |
1052 |
if (is_enforce) |
863 |
|
|
return "ERROR"; |
864 |
|
|
else |
865 |
|
|
return "WARNING"; |
866 |
kumaneko |
111 |
} |
867 |
|
|
|
868 |
kumaneko |
1052 |
/** |
869 |
kumaneko |
1657 |
* ccs_can_sleep - Check whether it is permitted to do operations that may sleep. |
870 |
kumaneko |
1052 |
* |
871 |
|
|
* Returns true if it is permitted to do operations that may sleep, |
872 |
|
|
* false otherwise. |
873 |
|
|
* |
874 |
|
|
* TOMOYO Linux supports interactive enforcement that lets processes |
875 |
|
|
* wait for the administrator's decision. |
876 |
|
|
* All hooks but the one for ccs_may_autobind() are inserted where |
877 |
|
|
* it is permitted to do operations that may sleep. |
878 |
|
|
* Thus, this warning should not happen. |
879 |
|
|
*/ |
880 |
kumaneko |
1657 |
bool ccs_can_sleep(void) |
881 |
kumaneko |
899 |
{ |
882 |
kumaneko |
1052 |
static u8 count = 20; |
883 |
|
|
if (likely(!in_interrupt())) |
884 |
|
|
return true; |
885 |
|
|
if (count) { |
886 |
|
|
count--; |
887 |
|
|
printk(KERN_ERR "BUG: sleeping function called " |
888 |
|
|
"from invalid context.\n"); |
889 |
|
|
dump_stack(); |
890 |
kumaneko |
899 |
} |
891 |
kumaneko |
1052 |
return false; |
892 |
kumaneko |
899 |
} |
893 |
|
|
|
894 |
kumaneko |
1052 |
/** |
895 |
|
|
* ccs_check_flags - Check mode for specified functionality. |
896 |
|
|
* |
897 |
kumaneko |
2282 |
* @domain: Pointer to "struct ccs_domain_info". NULL for ccs_current_domain(). |
898 |
kumaneko |
1657 |
* @index: The functionality to check mode. |
899 |
kumaneko |
1052 |
* |
900 |
|
|
* Returns the mode of specified functionality. |
901 |
|
|
*/ |
902 |
kumaneko |
2282 |
unsigned int ccs_check_flags(const struct ccs_domain_info *domain, |
903 |
|
|
const u8 index) |
904 |
kumaneko |
1015 |
{ |
905 |
kumaneko |
1657 |
u8 profile; |
906 |
|
|
if (!domain) |
907 |
kumaneko |
2282 |
domain = ccs_current_domain(); |
908 |
kumaneko |
1657 |
profile = domain->profile; |
909 |
kumaneko |
2040 |
return ccs_policy_loaded && index < CCS_MAX_CONTROL_INDEX |
910 |
kumaneko |
1657 |
#if MAX_PROFILES != 256 |
911 |
|
|
&& profile < MAX_PROFILES |
912 |
|
|
#endif |
913 |
kumaneko |
2002 |
&& ccs_profile_ptr[profile] ? |
914 |
|
|
ccs_profile_ptr[profile]->value[index] : 0; |
915 |
kumaneko |
1015 |
} |
916 |
|
|
|
917 |
|
|
#ifdef CONFIG_TOMOYO |
918 |
kumaneko |
1052 |
/** |
919 |
|
|
* ccs_check_capability_flags - Check mode for specified capability. |
920 |
|
|
* |
921 |
kumaneko |
2282 |
* @domain: Pointer to "struct ccs_domain_info". NULL for ccs_current_domain(). |
922 |
kumaneko |
1657 |
* @index: The capability to check mode. |
923 |
kumaneko |
1052 |
* |
924 |
|
|
* Returns the mode of specified capability. |
925 |
|
|
*/ |
926 |
kumaneko |
2282 |
static u8 ccs_check_capability_flags(const struct ccs_domain_info *domain, |
927 |
kumaneko |
1657 |
const u8 index) |
928 |
kumaneko |
1015 |
{ |
929 |
kumaneko |
1657 |
const u8 profile = domain ? domain->profile : |
930 |
kumaneko |
2282 |
ccs_current_domain()->profile; |
931 |
|
|
return ccs_policy_loaded && index < CCS_MAX_CAPABILITY_INDEX |
932 |
kumaneko |
1015 |
#if MAX_PROFILES != 256 |
933 |
|
|
&& profile < MAX_PROFILES |
934 |
|
|
#endif |
935 |
kumaneko |
2002 |
&& ccs_profile_ptr[profile] ? |
936 |
|
|
ccs_profile_ptr[profile]->capability_value[index] : 0; |
937 |
kumaneko |
1015 |
} |
938 |
|
|
|
939 |
kumaneko |
1052 |
/** |
940 |
|
|
* ccs_cap2keyword - Convert capability operation to capability name. |
941 |
|
|
* |
942 |
|
|
* @operation: The capability index. |
943 |
|
|
* |
944 |
|
|
* Returns the name of the specified capability's name. |
945 |
|
|
*/ |
946 |
|
|
const char *ccs_cap2keyword(const u8 operation) |
947 |
kumaneko |
1015 |
{ |
948 |
kumaneko |
2282 |
return operation < CCS_MAX_CAPABILITY_INDEX |
949 |
kumaneko |
2002 |
? ccs_capability_control_keyword[operation] : NULL; |
950 |
kumaneko |
1015 |
} |
951 |
|
|
|
952 |
|
|
#endif |
953 |
|
|
|
954 |
kumaneko |
1052 |
/** |
955 |
kumaneko |
1657 |
* ccs_init_request_info - Initialize "struct ccs_request_info" members. |
956 |
|
|
* |
957 |
|
|
* @r: Pointer to "struct ccs_request_info" to initialize. |
958 |
kumaneko |
2282 |
* @domain: Pointer to "struct ccs_domain_info". NULL for ccs_current_domain(). |
959 |
kumaneko |
1657 |
* @index: Index number of functionality. |
960 |
|
|
*/ |
961 |
|
|
void ccs_init_request_info(struct ccs_request_info *r, |
962 |
kumaneko |
2282 |
struct ccs_domain_info *domain, const u8 index) |
963 |
kumaneko |
1657 |
{ |
964 |
|
|
memset(r, 0, sizeof(*r)); |
965 |
|
|
if (!domain) |
966 |
kumaneko |
2282 |
domain = ccs_current_domain(); |
967 |
kumaneko |
1657 |
r->domain = domain; |
968 |
|
|
r->profile = domain->profile; |
969 |
|
|
if (index < CCS_MAX_CONTROL_INDEX) |
970 |
|
|
r->mode = ccs_check_flags(domain, index); |
971 |
|
|
#ifdef CONFIG_TOMOYO |
972 |
|
|
else |
973 |
|
|
r->mode = ccs_check_capability_flags(domain, index |
974 |
|
|
- CCS_MAX_CONTROL_INDEX); |
975 |
|
|
#endif |
976 |
|
|
} |
977 |
|
|
|
978 |
|
|
/** |
979 |
kumaneko |
1052 |
* ccs_verbose_mode - Check whether TOMOYO is verbose mode. |
980 |
|
|
* |
981 |
kumaneko |
2282 |
* @domain: Pointer to "struct ccs_domain_info". NULL for ccs_current_domain(). |
982 |
kumaneko |
1657 |
* |
983 |
kumaneko |
1052 |
* Returns true if domain policy violation warning should be printed to |
984 |
|
|
* console. |
985 |
|
|
*/ |
986 |
kumaneko |
2282 |
bool ccs_verbose_mode(const struct ccs_domain_info *domain) |
987 |
kumaneko |
111 |
{ |
988 |
kumaneko |
2282 |
return ccs_check_flags(domain, CCS_VERBOSE) != 0; |
989 |
kumaneko |
111 |
} |
990 |
|
|
|
991 |
kumaneko |
1052 |
/** |
992 |
kumaneko |
2209 |
* ccs_domain_quota_ok - Check for domain's quota. |
993 |
kumaneko |
1052 |
* |
994 |
kumaneko |
2282 |
* @domain: Pointer to "struct ccs_domain_info". |
995 |
kumaneko |
1052 |
* |
996 |
|
|
* Returns true if the domain is not exceeded quota, false otherwise. |
997 |
|
|
*/ |
998 |
kumaneko |
2282 |
bool ccs_domain_quota_ok(struct ccs_domain_info * const domain) |
999 |
kumaneko |
512 |
{ |
1000 |
|
|
unsigned int count = 0; |
1001 |
kumaneko |
2002 |
struct ccs_acl_info *ptr; |
1002 |
kumaneko |
1052 |
if (!domain) |
1003 |
|
|
return true; |
1004 |
kumaneko |
722 |
list1_for_each_entry(ptr, &domain->acl_info_list, list) { |
1005 |
kumaneko |
1064 |
if (ptr->type & ACL_DELETED) |
1006 |
|
|
continue; |
1007 |
|
|
switch (ccs_acl_type2(ptr)) { |
1008 |
kumaneko |
2002 |
struct ccs_single_path_acl_record *acl1; |
1009 |
|
|
struct ccs_double_path_acl_record *acl2; |
1010 |
kumaneko |
1064 |
u16 perm; |
1011 |
|
|
case TYPE_SINGLE_PATH_ACL: |
1012 |
kumaneko |
2002 |
acl1 = container_of(ptr, |
1013 |
|
|
struct ccs_single_path_acl_record, |
1014 |
kumaneko |
1064 |
head); |
1015 |
|
|
perm = acl1->perm; |
1016 |
|
|
if (perm & (1 << TYPE_EXECUTE_ACL)) |
1017 |
|
|
count++; |
1018 |
|
|
if (perm & |
1019 |
|
|
((1 << TYPE_READ_ACL) | (1 << TYPE_WRITE_ACL))) |
1020 |
|
|
count++; |
1021 |
|
|
if (perm & (1 << TYPE_CREATE_ACL)) |
1022 |
|
|
count++; |
1023 |
|
|
if (perm & (1 << TYPE_UNLINK_ACL)) |
1024 |
|
|
count++; |
1025 |
|
|
if (perm & (1 << TYPE_MKDIR_ACL)) |
1026 |
|
|
count++; |
1027 |
|
|
if (perm & (1 << TYPE_RMDIR_ACL)) |
1028 |
|
|
count++; |
1029 |
|
|
if (perm & (1 << TYPE_MKFIFO_ACL)) |
1030 |
|
|
count++; |
1031 |
|
|
if (perm & (1 << TYPE_MKSOCK_ACL)) |
1032 |
|
|
count++; |
1033 |
|
|
if (perm & (1 << TYPE_MKBLOCK_ACL)) |
1034 |
|
|
count++; |
1035 |
|
|
if (perm & (1 << TYPE_MKCHAR_ACL)) |
1036 |
|
|
count++; |
1037 |
|
|
if (perm & (1 << TYPE_TRUNCATE_ACL)) |
1038 |
|
|
count++; |
1039 |
|
|
if (perm & (1 << TYPE_SYMLINK_ACL)) |
1040 |
|
|
count++; |
1041 |
|
|
if (perm & (1 << TYPE_REWRITE_ACL)) |
1042 |
|
|
count++; |
1043 |
|
|
break; |
1044 |
|
|
case TYPE_DOUBLE_PATH_ACL: |
1045 |
kumaneko |
2002 |
acl2 = container_of(ptr, |
1046 |
|
|
struct ccs_double_path_acl_record, |
1047 |
kumaneko |
1064 |
head); |
1048 |
|
|
perm = acl2->perm; |
1049 |
|
|
if (perm & (1 << TYPE_LINK_ACL)) |
1050 |
|
|
count++; |
1051 |
|
|
if (perm & (1 << TYPE_RENAME_ACL)) |
1052 |
|
|
count++; |
1053 |
|
|
break; |
1054 |
|
|
case TYPE_EXECUTE_HANDLER: |
1055 |
|
|
case TYPE_DENIED_EXECUTE_HANDLER: |
1056 |
|
|
break; |
1057 |
|
|
default: |
1058 |
kumaneko |
1052 |
count++; |
1059 |
kumaneko |
1064 |
} |
1060 |
kumaneko |
512 |
} |
1061 |
kumaneko |
2282 |
if (count < ccs_check_flags(domain, CCS_MAX_ACCEPT_ENTRY)) |
1062 |
kumaneko |
1052 |
return true; |
1063 |
kumaneko |
512 |
if (!domain->quota_warned) { |
1064 |
kumaneko |
1006 |
domain->quota_warned = true; |
1065 |
kumaneko |
1052 |
printk(KERN_WARNING "TOMOYO-WARNING: " |
1066 |
|
|
"Domain '%s' has so many ACLs to hold. " |
1067 |
|
|
"Stopped learning mode.\n", domain->domainname->name); |
1068 |
kumaneko |
512 |
} |
1069 |
kumaneko |
1006 |
return false; |
1070 |
kumaneko |
512 |
} |
1071 |
|
|
|
1072 |
kumaneko |
1052 |
/** |
1073 |
|
|
* ccs_find_or_assign_new_profile - Create a new profile. |
1074 |
|
|
* |
1075 |
|
|
* @profile: Profile number to create. |
1076 |
|
|
* |
1077 |
kumaneko |
2002 |
* Returns pointer to "struct ccs_profile" on success, NULL otherwise. |
1078 |
kumaneko |
1052 |
*/ |
1079 |
kumaneko |
2002 |
static struct ccs_profile *ccs_find_or_assign_new_profile(const unsigned int |
1080 |
|
|
profile) |
1081 |
kumaneko |
111 |
{ |
1082 |
kumaneko |
1697 |
static DEFINE_MUTEX(lock); |
1083 |
kumaneko |
2002 |
struct ccs_profile *ptr = NULL; |
1084 |
kumaneko |
1697 |
mutex_lock(&lock); |
1085 |
kumaneko |
1052 |
if (profile < MAX_PROFILES) { |
1086 |
kumaneko |
2002 |
ptr = ccs_profile_ptr[profile]; |
1087 |
kumaneko |
1052 |
if (ptr) |
1088 |
|
|
goto ok; |
1089 |
|
|
ptr = ccs_alloc_element(sizeof(*ptr)); |
1090 |
|
|
if (ptr) { |
1091 |
kumaneko |
111 |
int i; |
1092 |
kumaneko |
1052 |
for (i = 0; i < CCS_MAX_CONTROL_INDEX; i++) |
1093 |
|
|
ptr->value[i] |
1094 |
|
|
= ccs_control_array[i].current_value; |
1095 |
|
|
/* |
1096 |
|
|
* Needn't to initialize "ptr->capability_value" |
1097 |
|
|
* because they are always 0. |
1098 |
|
|
*/ |
1099 |
kumaneko |
708 |
mb(); /* Avoid out-of-order execution. */ |
1100 |
kumaneko |
2002 |
ccs_profile_ptr[profile] = ptr; |
1101 |
kumaneko |
111 |
} |
1102 |
|
|
} |
1103 |
kumaneko |
1052 |
ok: |
1104 |
kumaneko |
1697 |
mutex_unlock(&lock); |
1105 |
kumaneko |
111 |
return ptr; |
1106 |
|
|
} |
1107 |
|
|
|
1108 |
kumaneko |
1052 |
/** |
1109 |
kumaneko |
2002 |
* ccs_write_profile - Write profile table. |
1110 |
kumaneko |
1052 |
* |
1111 |
kumaneko |
1657 |
* @head: Pointer to "struct ccs_io_buffer". |
1112 |
kumaneko |
1052 |
* |
1113 |
|
|
* Returns 0 on success, negative value otherwise. |
1114 |
|
|
*/ |
1115 |
kumaneko |
2002 |
static int ccs_write_profile(struct ccs_io_buffer *head) |
1116 |
kumaneko |
111 |
{ |
1117 |
|
|
char *data = head->write_buf; |
1118 |
kumaneko |
1064 |
unsigned int i; |
1119 |
|
|
unsigned int value; |
1120 |
kumaneko |
111 |
char *cp; |
1121 |
kumaneko |
2002 |
struct ccs_profile *ccs_profile; |
1122 |
kumaneko |
111 |
i = simple_strtoul(data, &cp, 10); |
1123 |
|
|
if (data != cp) { |
1124 |
kumaneko |
1052 |
if (*cp != '-') |
1125 |
|
|
return -EINVAL; |
1126 |
|
|
data = cp + 1; |
1127 |
kumaneko |
111 |
} |
1128 |
kumaneko |
2002 |
ccs_profile = ccs_find_or_assign_new_profile(i); |
1129 |
|
|
if (!ccs_profile) |
1130 |
kumaneko |
1052 |
return -EINVAL; |
1131 |
kumaneko |
111 |
cp = strchr(data, '='); |
1132 |
kumaneko |
1052 |
if (!cp) |
1133 |
|
|
return -EINVAL; |
1134 |
kumaneko |
111 |
*cp = '\0'; |
1135 |
kumaneko |
1052 |
ccs_update_counter(CCS_UPDATES_COUNTER_PROFILE); |
1136 |
|
|
if (!strcmp(data, "COMMENT")) { |
1137 |
kumaneko |
2002 |
ccs_profile->comment = ccs_save_name(cp + 1); |
1138 |
kumaneko |
2254 |
ccs_profile_entry_used[0] = true; |
1139 |
kumaneko |
111 |
return 0; |
1140 |
|
|
} |
1141 |
kumaneko |
708 |
#ifdef CONFIG_TOMOYO |
1142 |
kumaneko |
2002 |
if (ccs_str_starts(&data, KEYWORD_MAC_FOR_CAPABILITY)) { |
1143 |
kumaneko |
1014 |
if (sscanf(cp + 1, "%u", &value) != 1) { |
1144 |
kumaneko |
1015 |
for (i = 0; i < 4; i++) { |
1145 |
kumaneko |
2002 |
if (strcmp(cp + 1, ccs_mode_4[i])) |
1146 |
kumaneko |
1052 |
continue; |
1147 |
kumaneko |
1015 |
value = i; |
1148 |
kumaneko |
1014 |
break; |
1149 |
|
|
} |
1150 |
kumaneko |
1052 |
if (i == 4) |
1151 |
|
|
return -EINVAL; |
1152 |
kumaneko |
1014 |
} |
1153 |
kumaneko |
1052 |
if (value > 3) |
1154 |
|
|
value = 3; |
1155 |
kumaneko |
2282 |
for (i = 0; i < CCS_MAX_CAPABILITY_INDEX; i++) { |
1156 |
kumaneko |
2002 |
if (strcmp(data, ccs_capability_control_keyword[i])) |
1157 |
kumaneko |
1052 |
continue; |
1158 |
kumaneko |
2002 |
ccs_profile->capability_value[i] = value; |
1159 |
kumaneko |
2254 |
ccs_profile_entry_used[i + 1 + CCS_MAX_CONTROL_INDEX] |
1160 |
|
|
= true; |
1161 |
kumaneko |
1015 |
return 0; |
1162 |
|
|
} |
1163 |
|
|
return -EINVAL; |
1164 |
kumaneko |
111 |
} |
1165 |
kumaneko |
461 |
#endif |
1166 |
kumaneko |
111 |
for (i = 0; i < CCS_MAX_CONTROL_INDEX; i++) { |
1167 |
kumaneko |
1052 |
if (strcmp(data, ccs_control_array[i].keyword)) |
1168 |
|
|
continue; |
1169 |
kumaneko |
1014 |
if (sscanf(cp + 1, "%u", &value) != 1) { |
1170 |
|
|
int j; |
1171 |
|
|
const char **modes; |
1172 |
|
|
switch (i) { |
1173 |
kumaneko |
2282 |
case CCS_RESTRICT_AUTOBIND: |
1174 |
|
|
case CCS_VERBOSE: |
1175 |
kumaneko |
2002 |
modes = ccs_mode_2; |
1176 |
kumaneko |
1014 |
break; |
1177 |
|
|
default: |
1178 |
kumaneko |
2002 |
modes = ccs_mode_4; |
1179 |
kumaneko |
1014 |
break; |
1180 |
|
|
} |
1181 |
|
|
for (j = 0; j < 4; j++) { |
1182 |
kumaneko |
1052 |
if (strcmp(cp + 1, modes[j])) |
1183 |
|
|
continue; |
1184 |
kumaneko |
1014 |
value = j; |
1185 |
|
|
break; |
1186 |
|
|
} |
1187 |
kumaneko |
1052 |
if (j == 4) |
1188 |
|
|
return -EINVAL; |
1189 |
kumaneko |
1014 |
} else if (value > ccs_control_array[i].max_value) { |
1190 |
|
|
value = ccs_control_array[i].max_value; |
1191 |
|
|
} |
1192 |
|
|
switch (i) { |
1193 |
kumaneko |
2282 |
case CCS_DENY_CONCEAL_MOUNT: |
1194 |
|
|
case CCS_RESTRICT_UNMOUNT: |
1195 |
kumaneko |
1052 |
if (value == 1) |
1196 |
|
|
value = 2; /* learning mode is not supported. */ |
1197 |
kumaneko |
1014 |
} |
1198 |
kumaneko |
2002 |
ccs_profile->value[i] = value; |
1199 |
kumaneko |
2254 |
ccs_profile_entry_used[i + 1] = true; |
1200 |
kumaneko |
111 |
return 0; |
1201 |
|
|
} |
1202 |
|
|
return -EINVAL; |
1203 |
|
|
} |
1204 |
|
|
|
1205 |
kumaneko |
1052 |
/** |
1206 |
kumaneko |
2002 |
* ccs_read_profile - Read profile table. |
1207 |
kumaneko |
1052 |
* |
1208 |
kumaneko |
1657 |
* @head: Pointer to "struct ccs_io_buffer". |
1209 |
kumaneko |
1052 |
* |
1210 |
|
|
* Returns 0. |
1211 |
|
|
*/ |
1212 |
kumaneko |
2002 |
static int ccs_read_profile(struct ccs_io_buffer *head) |
1213 |
kumaneko |
111 |
{ |
1214 |
kumaneko |
2002 |
static const int ccs_total |
1215 |
kumaneko |
2282 |
= CCS_MAX_CONTROL_INDEX + CCS_MAX_CAPABILITY_INDEX + 1; |
1216 |
kumaneko |
1006 |
int step; |
1217 |
kumaneko |
1052 |
if (head->read_eof) |
1218 |
|
|
return 0; |
1219 |
kumaneko |
2002 |
for (step = head->read_step; step < MAX_PROFILES * ccs_total; step++) { |
1220 |
|
|
const u8 index = step / ccs_total; |
1221 |
|
|
u8 type = step % ccs_total; |
1222 |
|
|
const struct ccs_profile *ccs_profile = ccs_profile_ptr[index]; |
1223 |
kumaneko |
1006 |
head->read_step = step; |
1224 |
kumaneko |
2002 |
if (!ccs_profile) |
1225 |
kumaneko |
1052 |
continue; |
1226 |
|
|
#if !defined(CONFIG_SAKURA) || !defined(CONFIG_TOMOYO) |
1227 |
kumaneko |
2201 |
switch (type - 1) { |
1228 |
kumaneko |
461 |
#ifndef CONFIG_SAKURA |
1229 |
kumaneko |
2282 |
case CCS_DENY_CONCEAL_MOUNT: |
1230 |
|
|
case CCS_RESTRICT_CHROOT: |
1231 |
|
|
case CCS_RESTRICT_MOUNT: |
1232 |
|
|
case CCS_RESTRICT_UNMOUNT: |
1233 |
|
|
case CCS_RESTRICT_PIVOT_ROOT: |
1234 |
|
|
case CCS_RESTRICT_AUTOBIND: |
1235 |
kumaneko |
461 |
#endif |
1236 |
kumaneko |
111 |
#ifndef CONFIG_TOMOYO |
1237 |
kumaneko |
2282 |
case CCS_MAC_FOR_FILE: |
1238 |
kumaneko |
2303 |
case CCS_MAC_FOR_IOCTL: |
1239 |
kumaneko |
2282 |
case CCS_MAC_FOR_ARGV0: |
1240 |
|
|
case CCS_MAC_FOR_ENV: |
1241 |
|
|
case CCS_MAC_FOR_NETWORK: |
1242 |
|
|
case CCS_MAC_FOR_SIGNAL: |
1243 |
|
|
case CCS_MAX_ACCEPT_ENTRY: |
1244 |
|
|
case CCS_VERBOSE: |
1245 |
kumaneko |
111 |
#endif |
1246 |
kumaneko |
1006 |
continue; |
1247 |
kumaneko |
111 |
} |
1248 |
kumaneko |
1052 |
#endif |
1249 |
kumaneko |
2254 |
if (!ccs_profile_entry_used[type]) |
1250 |
|
|
continue; |
1251 |
kumaneko |
1052 |
if (!type) { /* Print profile' comment tag. */ |
1252 |
|
|
if (!ccs_io_printf(head, "%u-COMMENT=%s\n", |
1253 |
kumaneko |
2002 |
index, ccs_profile->comment ? |
1254 |
|
|
ccs_profile->comment->name : "")) |
1255 |
kumaneko |
1052 |
break; |
1256 |
|
|
continue; |
1257 |
|
|
} |
1258 |
|
|
type--; |
1259 |
|
|
if (type >= CCS_MAX_CONTROL_INDEX) { |
1260 |
kumaneko |
1015 |
#ifdef CONFIG_TOMOYO |
1261 |
kumaneko |
1052 |
const int i = type - CCS_MAX_CONTROL_INDEX; |
1262 |
kumaneko |
2002 |
const u8 value = ccs_profile->capability_value[i]; |
1263 |
kumaneko |
1052 |
if (!ccs_io_printf(head, |
1264 |
|
|
"%u-" KEYWORD_MAC_FOR_CAPABILITY |
1265 |
|
|
"%s=%s\n", index, |
1266 |
kumaneko |
2002 |
ccs_capability_control_keyword[i], |
1267 |
|
|
ccs_mode_4[value])) |
1268 |
kumaneko |
1052 |
break; |
1269 |
kumaneko |
1015 |
#endif |
1270 |
kumaneko |
1006 |
} else { |
1271 |
kumaneko |
2002 |
const unsigned int value = ccs_profile->value[type]; |
1272 |
kumaneko |
1014 |
const char **modes = NULL; |
1273 |
kumaneko |
1052 |
const char *keyword = ccs_control_array[type].keyword; |
1274 |
|
|
switch (ccs_control_array[type].max_value) { |
1275 |
kumaneko |
1014 |
case 3: |
1276 |
kumaneko |
2002 |
modes = ccs_mode_4; |
1277 |
kumaneko |
1014 |
break; |
1278 |
|
|
case 1: |
1279 |
kumaneko |
2002 |
modes = ccs_mode_2; |
1280 |
kumaneko |
1014 |
break; |
1281 |
|
|
} |
1282 |
|
|
if (modes) { |
1283 |
kumaneko |
1052 |
if (!ccs_io_printf(head, "%u-%s=%s\n", index, |
1284 |
|
|
keyword, modes[value])) |
1285 |
|
|
break; |
1286 |
kumaneko |
1014 |
} else { |
1287 |
kumaneko |
1052 |
if (!ccs_io_printf(head, "%u-%s=%u\n", index, |
1288 |
|
|
keyword, value)) |
1289 |
|
|
break; |
1290 |
kumaneko |
1014 |
} |
1291 |
kumaneko |
1006 |
} |
1292 |
|
|
} |
1293 |
kumaneko |
2002 |
if (step == MAX_PROFILES * ccs_total) |
1294 |
kumaneko |
1052 |
head->read_eof = true; |
1295 |
kumaneko |
111 |
return 0; |
1296 |
|
|
} |
1297 |
|
|
|
1298 |
kumaneko |
1052 |
/* Structure for policy manager. */ |
1299 |
kumaneko |
2002 |
struct ccs_policy_manager_entry { |
1300 |
kumaneko |
722 |
struct list1_head list; |
1301 |
kumaneko |
1052 |
/* A path to program or a domainname. */ |
1302 |
kumaneko |
2002 |
const struct ccs_path_info *manager; |
1303 |
kumaneko |
1052 |
bool is_domain; /* True if manager is a domainname. */ |
1304 |
|
|
bool is_deleted; /* True if this entry is deleted. */ |
1305 |
kumaneko |
214 |
}; |
1306 |
kumaneko |
111 |
|
1307 |
kumaneko |
2002 |
/* The list for "struct ccs_policy_manager_entry". */ |
1308 |
|
|
static LIST1_HEAD(ccs_policy_manager_list); |
1309 |
kumaneko |
111 |
|
1310 |
kumaneko |
1052 |
/** |
1311 |
kumaneko |
2002 |
* ccs_update_manager_entry - Add a manager entry. |
1312 |
kumaneko |
1052 |
* |
1313 |
|
|
* @manager: The path to manager or the domainnamme. |
1314 |
|
|
* @is_delete: True if it is a delete request. |
1315 |
|
|
* |
1316 |
|
|
* Returns 0 on success, negative value otherwise. |
1317 |
|
|
*/ |
1318 |
kumaneko |
2002 |
static int ccs_update_manager_entry(const char *manager, const bool is_delete) |
1319 |
kumaneko |
111 |
{ |
1320 |
kumaneko |
2002 |
struct ccs_policy_manager_entry *new_entry; |
1321 |
|
|
struct ccs_policy_manager_entry *ptr; |
1322 |
kumaneko |
652 |
static DEFINE_MUTEX(lock); |
1323 |
kumaneko |
2002 |
const struct ccs_path_info *saved_manager; |
1324 |
kumaneko |
111 |
int error = -ENOMEM; |
1325 |
kumaneko |
1006 |
bool is_domain = false; |
1326 |
kumaneko |
1052 |
if (ccs_is_domain_def(manager)) { |
1327 |
|
|
if (!ccs_is_correct_domain(manager, __func__)) |
1328 |
|
|
return -EINVAL; |
1329 |
kumaneko |
1006 |
is_domain = true; |
1330 |
kumaneko |
111 |
} else { |
1331 |
kumaneko |
1052 |
if (!ccs_is_correct_path(manager, 1, -1, -1, __func__)) |
1332 |
|
|
return -EINVAL; |
1333 |
kumaneko |
111 |
} |
1334 |
kumaneko |
1052 |
saved_manager = ccs_save_name(manager); |
1335 |
|
|
if (!saved_manager) |
1336 |
|
|
return -ENOMEM; |
1337 |
kumaneko |
652 |
mutex_lock(&lock); |
1338 |
kumaneko |
2002 |
list1_for_each_entry(ptr, &ccs_policy_manager_list, list) { |
1339 |
kumaneko |
1064 |
if (ptr->manager != saved_manager) |
1340 |
|
|
continue; |
1341 |
|
|
ptr->is_deleted = is_delete; |
1342 |
|
|
error = 0; |
1343 |
|
|
goto out; |
1344 |
kumaneko |
111 |
} |
1345 |
|
|
if (is_delete) { |
1346 |
|
|
error = -ENOENT; |
1347 |
|
|
goto out; |
1348 |
|
|
} |
1349 |
kumaneko |
1052 |
new_entry = ccs_alloc_element(sizeof(*new_entry)); |
1350 |
|
|
if (!new_entry) |
1351 |
|
|
goto out; |
1352 |
kumaneko |
111 |
new_entry->manager = saved_manager; |
1353 |
|
|
new_entry->is_domain = is_domain; |
1354 |
kumaneko |
2002 |
list1_add_tail_mb(&new_entry->list, &ccs_policy_manager_list); |
1355 |
kumaneko |
111 |
error = 0; |
1356 |
|
|
out: |
1357 |
kumaneko |
652 |
mutex_unlock(&lock); |
1358 |
kumaneko |
1052 |
if (!error) |
1359 |
|
|
ccs_update_counter(CCS_UPDATES_COUNTER_MANAGER); |
1360 |
kumaneko |
111 |
return error; |
1361 |
|
|
} |
1362 |
|
|
|
1363 |
kumaneko |
1052 |
/** |
1364 |
kumaneko |
2002 |
* ccs_write_manager_policy - Write manager policy. |
1365 |
kumaneko |
1052 |
* |
1366 |
kumaneko |
1657 |
* @head: Pointer to "struct ccs_io_buffer". |
1367 |
kumaneko |
1052 |
* |
1368 |
|
|
* Returns 0 on success, negative value otherwise. |
1369 |
|
|
*/ |
1370 |
kumaneko |
2002 |
static int ccs_write_manager_policy(struct ccs_io_buffer *head) |
1371 |
kumaneko |
111 |
{ |
1372 |
kumaneko |
1052 |
char *data = head->write_buf; |
1373 |
kumaneko |
2002 |
bool is_delete = ccs_str_starts(&data, KEYWORD_DELETE); |
1374 |
kumaneko |
1064 |
if (!strcmp(data, "manage_by_non_root")) { |
1375 |
kumaneko |
2002 |
ccs_manage_by_non_root = !is_delete; |
1376 |
kumaneko |
1006 |
return 0; |
1377 |
|
|
} |
1378 |
kumaneko |
2002 |
return ccs_update_manager_entry(data, is_delete); |
1379 |
kumaneko |
111 |
} |
1380 |
|
|
|
1381 |
kumaneko |
1052 |
/** |
1382 |
kumaneko |
2002 |
* ccs_read_manager_policy - Read manager policy. |
1383 |
kumaneko |
1052 |
* |
1384 |
kumaneko |
1657 |
* @head: Pointer to "struct ccs_io_buffer". |
1385 |
kumaneko |
1052 |
* |
1386 |
|
|
* Returns 0. |
1387 |
|
|
*/ |
1388 |
kumaneko |
2002 |
static int ccs_read_manager_policy(struct ccs_io_buffer *head) |
1389 |
kumaneko |
111 |
{ |
1390 |
kumaneko |
722 |
struct list1_head *pos; |
1391 |
kumaneko |
1052 |
if (head->read_eof) |
1392 |
|
|
return 0; |
1393 |
kumaneko |
2002 |
list1_for_each_cookie(pos, head->read_var2, &ccs_policy_manager_list) { |
1394 |
|
|
struct ccs_policy_manager_entry *ptr; |
1395 |
|
|
ptr = list1_entry(pos, struct ccs_policy_manager_entry, list); |
1396 |
kumaneko |
1052 |
if (ptr->is_deleted) |
1397 |
|
|
continue; |
1398 |
|
|
if (!ccs_io_printf(head, "%s\n", ptr->manager->name)) |
1399 |
|
|
return 0; |
1400 |
kumaneko |
111 |
} |
1401 |
kumaneko |
1006 |
head->read_eof = true; |
1402 |
kumaneko |
111 |
return 0; |
1403 |
|
|
} |
1404 |
|
|
|
1405 |
kumaneko |
1052 |
/** |
1406 |
kumaneko |
2002 |
* ccs_is_policy_manager - Check whether the current process is a policy manager. |
1407 |
kumaneko |
1052 |
* |
1408 |
|
|
* Returns true if the current process is permitted to modify policy |
1409 |
|
|
* via /proc/ccs/ interface. |
1410 |
|
|
*/ |
1411 |
kumaneko |
2002 |
static bool ccs_is_policy_manager(void) |
1412 |
kumaneko |
111 |
{ |
1413 |
kumaneko |
2002 |
struct ccs_policy_manager_entry *ptr; |
1414 |
kumaneko |
111 |
const char *exe; |
1415 |
kumaneko |
1578 |
struct task_struct *task = current; |
1416 |
kumaneko |
2282 |
const struct ccs_path_info *domainname |
1417 |
|
|
= ccs_current_domain()->domainname; |
1418 |
kumaneko |
1006 |
bool found = false; |
1419 |
kumaneko |
2040 |
if (!ccs_policy_loaded) |
1420 |
kumaneko |
1052 |
return true; |
1421 |
kumaneko |
2282 |
if (task->ccs_flags & CCS_TASK_IS_POLICY_MANAGER) |
1422 |
kumaneko |
1578 |
return true; |
1423 |
kumaneko |
2016 |
if (!ccs_manage_by_non_root && (current_uid() || current_euid())) |
1424 |
kumaneko |
1052 |
return false; |
1425 |
kumaneko |
2002 |
list1_for_each_entry(ptr, &ccs_policy_manager_list, list) { |
1426 |
kumaneko |
1052 |
if (!ptr->is_deleted && ptr->is_domain |
1427 |
kumaneko |
1578 |
&& !ccs_pathcmp(domainname, ptr->manager)) { |
1428 |
|
|
/* Set manager flag. */ |
1429 |
kumaneko |
2282 |
task->ccs_flags |= CCS_TASK_IS_POLICY_MANAGER; |
1430 |
kumaneko |
1052 |
return true; |
1431 |
kumaneko |
1578 |
} |
1432 |
kumaneko |
111 |
} |
1433 |
kumaneko |
1052 |
exe = ccs_get_exe(); |
1434 |
|
|
if (!exe) |
1435 |
|
|
return false; |
1436 |
kumaneko |
2002 |
list1_for_each_entry(ptr, &ccs_policy_manager_list, list) { |
1437 |
kumaneko |
1052 |
if (!ptr->is_deleted && !ptr->is_domain |
1438 |
|
|
&& !strcmp(exe, ptr->manager->name)) { |
1439 |
kumaneko |
1006 |
found = true; |
1440 |
kumaneko |
1578 |
/* Set manager flag. */ |
1441 |
kumaneko |
2282 |
task->ccs_flags |= CCS_TASK_IS_POLICY_MANAGER; |
1442 |
kumaneko |
708 |
break; |
1443 |
|
|
} |
1444 |
kumaneko |
111 |
} |
1445 |
kumaneko |
708 |
if (!found) { /* Reduce error messages. */ |
1446 |
kumaneko |
2002 |
static pid_t ccs_last_pid; |
1447 |
kumaneko |
111 |
const pid_t pid = current->pid; |
1448 |
kumaneko |
2002 |
if (ccs_last_pid != pid) { |
1449 |
kumaneko |
1052 |
printk(KERN_WARNING "%s ( %s ) is not permitted to " |
1450 |
|
|
"update policies.\n", domainname->name, exe); |
1451 |
kumaneko |
2002 |
ccs_last_pid = pid; |
1452 |
kumaneko |
111 |
} |
1453 |
|
|
} |
1454 |
|
|
ccs_free(exe); |
1455 |
kumaneko |
708 |
return found; |
1456 |
kumaneko |
111 |
} |
1457 |
|
|
|
1458 |
|
|
#ifdef CONFIG_TOMOYO |
1459 |
|
|
|
1460 |
kumaneko |
1052 |
/** |
1461 |
|
|
* ccs_find_condition_part - Find condition part from the statement. |
1462 |
|
|
* |
1463 |
|
|
* @data: String to parse. |
1464 |
|
|
* |
1465 |
|
|
* Returns pointer to the condition part if it was found in the statement, |
1466 |
|
|
* NULL otherwise. |
1467 |
|
|
*/ |
1468 |
|
|
static char *ccs_find_condition_part(char *data) |
1469 |
kumaneko |
581 |
{ |
1470 |
kumaneko |
1064 |
char *cp = strstr(data, " if "); |
1471 |
kumaneko |
581 |
if (cp) { |
1472 |
kumaneko |
1747 |
while (1) { |
1473 |
|
|
char *cp2 = strstr(cp + 3, " if "); |
1474 |
|
|
if (!cp2) |
1475 |
|
|
break; |
1476 |
kumaneko |
1064 |
cp = cp2; |
1477 |
kumaneko |
1747 |
} |
1478 |
kumaneko |
581 |
*cp++ = '\0'; |
1479 |
kumaneko |
1052 |
} else { |
1480 |
|
|
cp = strstr(data, " ; set "); |
1481 |
|
|
if (cp) |
1482 |
|
|
*cp++ = '\0'; |
1483 |
kumaneko |
581 |
} |
1484 |
|
|
return cp; |
1485 |
|
|
} |
1486 |
|
|
|
1487 |
kumaneko |
1052 |
/** |
1488 |
kumaneko |
2002 |
* ccs_is_select_one - Parse select command. |
1489 |
kumaneko |
1609 |
* |
1490 |
|
|
* @head: Pointer to "struct ccs_io_buffer". |
1491 |
|
|
* @data: String to parse. |
1492 |
|
|
* |
1493 |
|
|
* Returns true on success, false otherwise. |
1494 |
|
|
*/ |
1495 |
kumaneko |
2002 |
static bool ccs_is_select_one(struct ccs_io_buffer *head, const char *data) |
1496 |
kumaneko |
1609 |
{ |
1497 |
|
|
unsigned int pid; |
1498 |
kumaneko |
2282 |
struct ccs_domain_info *domain = NULL; |
1499 |
kumaneko |
1926 |
if (!strcmp(data, "allow_execute")) { |
1500 |
|
|
head->read_execute_only = true; |
1501 |
|
|
return true; |
1502 |
|
|
} |
1503 |
kumaneko |
1609 |
if (sscanf(data, "pid=%u", &pid) == 1) { |
1504 |
|
|
struct task_struct *p; |
1505 |
|
|
/***** CRITICAL SECTION START *****/ |
1506 |
|
|
read_lock(&tasklist_lock); |
1507 |
|
|
p = find_task_by_pid(pid); |
1508 |
|
|
if (p) |
1509 |
kumaneko |
2282 |
domain = ccs_task_domain(p); |
1510 |
kumaneko |
1609 |
read_unlock(&tasklist_lock); |
1511 |
|
|
/***** CRITICAL SECTION END *****/ |
1512 |
|
|
} else if (!strncmp(data, "domain=", 7)) { |
1513 |
|
|
if (ccs_is_domain_def(data + 7)) |
1514 |
|
|
domain = ccs_find_domain(data + 7); |
1515 |
|
|
} else |
1516 |
|
|
return false; |
1517 |
kumaneko |
1809 |
head->write_var1 = domain; |
1518 |
kumaneko |
1810 |
/* Accessing read_buf is safe because head->io_sem is held. */ |
1519 |
kumaneko |
1809 |
if (!head->read_buf) |
1520 |
|
|
return true; /* Do nothing if open(O_WRONLY). */ |
1521 |
kumaneko |
1609 |
head->read_avail = 0; |
1522 |
|
|
ccs_io_printf(head, "# select %s\n", data); |
1523 |
|
|
head->read_single_domain = true; |
1524 |
|
|
head->read_eof = !domain; |
1525 |
|
|
if (domain) { |
1526 |
kumaneko |
2282 |
struct ccs_domain_info *d; |
1527 |
kumaneko |
1609 |
head->read_var1 = NULL; |
1528 |
kumaneko |
2002 |
list1_for_each_entry(d, &ccs_domain_list, list) { |
1529 |
kumaneko |
1609 |
if (d == domain) |
1530 |
|
|
break; |
1531 |
|
|
head->read_var1 = &d->list; |
1532 |
|
|
} |
1533 |
|
|
head->read_var2 = NULL; |
1534 |
|
|
head->read_bit = 0; |
1535 |
|
|
head->read_step = 0; |
1536 |
|
|
if (domain->is_deleted) |
1537 |
|
|
ccs_io_printf(head, "# This is a deleted domain.\n"); |
1538 |
|
|
} |
1539 |
|
|
return true; |
1540 |
|
|
} |
1541 |
|
|
|
1542 |
|
|
/** |
1543 |
kumaneko |
2002 |
* ccs_write_domain_policy - Write domain policy. |
1544 |
kumaneko |
1052 |
* |
1545 |
|
|
* @head: Pointer to "struct ccs_io_buffer". |
1546 |
|
|
* |
1547 |
|
|
* Returns 0 on success, negative value otherwise. |
1548 |
|
|
*/ |
1549 |
kumaneko |
2002 |
static int ccs_write_domain_policy(struct ccs_io_buffer *head) |
1550 |
kumaneko |
111 |
{ |
1551 |
|
|
char *data = head->write_buf; |
1552 |
kumaneko |
2282 |
struct ccs_domain_info *domain = head->write_var1; |
1553 |
kumaneko |
1064 |
bool is_delete = false; |
1554 |
|
|
bool is_select = false; |
1555 |
kumaneko |
111 |
unsigned int profile; |
1556 |
kumaneko |
2002 |
const struct ccs_condition_list *cond = NULL; |
1557 |
kumaneko |
906 |
char *cp; |
1558 |
kumaneko |
2002 |
if (ccs_str_starts(&data, KEYWORD_DELETE)) |
1559 |
kumaneko |
1006 |
is_delete = true; |
1560 |
kumaneko |
2002 |
else if (ccs_str_starts(&data, KEYWORD_SELECT)) |
1561 |
kumaneko |
1006 |
is_select = true; |
1562 |
kumaneko |
2002 |
if (is_select && ccs_is_select_one(head, data)) |
1563 |
kumaneko |
1609 |
return 0; |
1564 |
kumaneko |
1606 |
/* Don't allow updating policies by non manager programs. */ |
1565 |
kumaneko |
2002 |
if (!ccs_is_policy_manager()) |
1566 |
kumaneko |
1606 |
return -EPERM; |
1567 |
kumaneko |
1052 |
if (ccs_is_domain_def(data)) { |
1568 |
kumaneko |
1064 |
domain = NULL; |
1569 |
|
|
if (is_delete) |
1570 |
kumaneko |
1052 |
ccs_delete_domain(data); |
1571 |
kumaneko |
1064 |
else if (is_select) |
1572 |
kumaneko |
1052 |
domain = ccs_find_domain(data); |
1573 |
kumaneko |
1064 |
else |
1574 |
kumaneko |
1052 |
domain = ccs_find_or_assign_new_domain(data, 0); |
1575 |
kumaneko |
111 |
head->write_var1 = domain; |
1576 |
kumaneko |
1052 |
ccs_update_counter(CCS_UPDATES_COUNTER_DOMAIN_POLICY); |
1577 |
kumaneko |
111 |
return 0; |
1578 |
|
|
} |
1579 |
kumaneko |
1052 |
if (!domain) |
1580 |
|
|
return -EINVAL; |
1581 |
kumaneko |
581 |
|
1582 |
kumaneko |
1052 |
if (sscanf(data, KEYWORD_USE_PROFILE "%u", &profile) == 1 |
1583 |
|
|
&& profile < MAX_PROFILES) { |
1584 |
kumaneko |
2040 |
if (ccs_profile_ptr[profile] || !ccs_policy_loaded) |
1585 |
kumaneko |
1052 |
domain->profile = (u8) profile; |
1586 |
kumaneko |
581 |
return 0; |
1587 |
|
|
} |
1588 |
kumaneko |
1052 |
if (!strcmp(data, KEYWORD_IGNORE_GLOBAL_ALLOW_READ)) { |
1589 |
|
|
ccs_set_domain_flag(domain, is_delete, |
1590 |
|
|
DOMAIN_FLAGS_IGNORE_GLOBAL_ALLOW_READ); |
1591 |
kumaneko |
1007 |
return 0; |
1592 |
|
|
} |
1593 |
kumaneko |
1052 |
if (!strcmp(data, KEYWORD_IGNORE_GLOBAL_ALLOW_ENV)) { |
1594 |
|
|
ccs_set_domain_flag(domain, is_delete, |
1595 |
|
|
DOMAIN_FLAGS_IGNORE_GLOBAL_ALLOW_ENV); |
1596 |
kumaneko |
1007 |
return 0; |
1597 |
|
|
} |
1598 |
kumaneko |
1052 |
cp = ccs_find_condition_part(data); |
1599 |
|
|
if (cp) { |
1600 |
|
|
cond = ccs_find_or_assign_new_condition(cp); |
1601 |
|
|
if (!cond) |
1602 |
|
|
return -EINVAL; |
1603 |
kumaneko |
111 |
} |
1604 |
kumaneko |
2002 |
if (ccs_str_starts(&data, KEYWORD_ALLOW_CAPABILITY)) |
1605 |
kumaneko |
1052 |
return ccs_write_capability_policy(data, domain, cond, |
1606 |
|
|
is_delete); |
1607 |
kumaneko |
2002 |
else if (ccs_str_starts(&data, KEYWORD_ALLOW_NETWORK)) |
1608 |
kumaneko |
1052 |
return ccs_write_network_policy(data, domain, cond, is_delete); |
1609 |
kumaneko |
2002 |
else if (ccs_str_starts(&data, KEYWORD_ALLOW_SIGNAL)) |
1610 |
kumaneko |
1052 |
return ccs_write_signal_policy(data, domain, cond, is_delete); |
1611 |
kumaneko |
2002 |
else if (ccs_str_starts(&data, KEYWORD_ALLOW_ARGV0)) |
1612 |
kumaneko |
1052 |
return ccs_write_argv0_policy(data, domain, cond, is_delete); |
1613 |
kumaneko |
2002 |
else if (ccs_str_starts(&data, KEYWORD_ALLOW_ENV)) |
1614 |
kumaneko |
1052 |
return ccs_write_env_policy(data, domain, cond, is_delete); |
1615 |
kumaneko |
2271 |
else if (ccs_str_starts(&data, KEYWORD_ALLOW_IOCTL)) |
1616 |
|
|
return ccs_write_ioctl_policy(data, domain, cond, is_delete); |
1617 |
kumaneko |
1052 |
else |
1618 |
|
|
return ccs_write_file_policy(data, domain, cond, is_delete); |
1619 |
kumaneko |
111 |
} |
1620 |
|
|
|
1621 |
kumaneko |
1052 |
/** |
1622 |
kumaneko |
2002 |
* ccs_print_single_path_acl - Print a single path ACL entry. |
1623 |
kumaneko |
1052 |
* |
1624 |
|
|
* @head: Pointer to "struct ccs_io_buffer". |
1625 |
kumaneko |
2002 |
* @ptr: Pointer to "struct ccs_single_path_acl_record". |
1626 |
|
|
* @cond: Pointer to "struct ccs_condition_list". May be NULL. |
1627 |
kumaneko |
1052 |
* |
1628 |
|
|
* Returns true on success, false otherwise. |
1629 |
|
|
*/ |
1630 |
kumaneko |
2002 |
static bool ccs_print_single_path_acl(struct ccs_io_buffer *head, |
1631 |
|
|
struct ccs_single_path_acl_record *ptr, |
1632 |
|
|
const struct ccs_condition_list *cond) |
1633 |
kumaneko |
856 |
{ |
1634 |
|
|
int pos; |
1635 |
|
|
u8 bit; |
1636 |
kumaneko |
1052 |
const char *atmark = ""; |
1637 |
|
|
const char *filename; |
1638 |
kumaneko |
856 |
const u16 perm = ptr->perm; |
1639 |
kumaneko |
1052 |
if (ptr->u_is_group) { |
1640 |
|
|
atmark = "@"; |
1641 |
|
|
filename = ptr->u.group->group_name->name; |
1642 |
|
|
} else { |
1643 |
|
|
filename = ptr->u.filename->name; |
1644 |
|
|
} |
1645 |
kumaneko |
856 |
for (bit = head->read_bit; bit < MAX_SINGLE_PATH_OPERATION; bit++) { |
1646 |
|
|
const char *msg; |
1647 |
kumaneko |
1052 |
if (!(perm & (1 << bit))) |
1648 |
|
|
continue; |
1649 |
kumaneko |
1926 |
if (head->read_execute_only && bit != TYPE_EXECUTE_ACL) |
1650 |
|
|
continue; |
1651 |
kumaneko |
856 |
/* Print "read/write" instead of "read" and "write". */ |
1652 |
kumaneko |
1052 |
if ((bit == TYPE_READ_ACL || bit == TYPE_WRITE_ACL) |
1653 |
|
|
&& (perm & (1 << TYPE_READ_WRITE_ACL))) |
1654 |
|
|
continue; |
1655 |
|
|
msg = ccs_sp2keyword(bit); |
1656 |
kumaneko |
856 |
pos = head->read_avail; |
1657 |
kumaneko |
1052 |
if (!ccs_io_printf(head, "allow_%s %s%s", msg, |
1658 |
|
|
atmark, filename) || |
1659 |
kumaneko |
1054 |
!ccs_print_condition(head, cond)) |
1660 |
kumaneko |
1052 |
goto out; |
1661 |
kumaneko |
856 |
} |
1662 |
|
|
head->read_bit = 0; |
1663 |
kumaneko |
1006 |
return true; |
1664 |
kumaneko |
856 |
out: |
1665 |
|
|
head->read_bit = bit; |
1666 |
|
|
head->read_avail = pos; |
1667 |
kumaneko |
1006 |
return false; |
1668 |
kumaneko |
856 |
} |
1669 |
|
|
|
1670 |
kumaneko |
1052 |
/** |
1671 |
kumaneko |
2002 |
* ccs_print_double_path_acl - Print a double path ACL entry. |
1672 |
kumaneko |
1052 |
* |
1673 |
|
|
* @head: Pointer to "struct ccs_io_buffer". |
1674 |
kumaneko |
2002 |
* @ptr: Pointer to "struct ccs_double_path_acl_record". |
1675 |
|
|
* @cond: Pointer to "struct ccs_condition_list". May be NULL. |
1676 |
kumaneko |
1052 |
* |
1677 |
|
|
* Returns true on success, false otherwise. |
1678 |
|
|
*/ |
1679 |
kumaneko |
2002 |
static bool ccs_print_double_path_acl(struct ccs_io_buffer *head, |
1680 |
|
|
struct ccs_double_path_acl_record *ptr, |
1681 |
|
|
const struct ccs_condition_list *cond) |
1682 |
kumaneko |
856 |
{ |
1683 |
|
|
int pos; |
1684 |
kumaneko |
1052 |
const char *atmark1 = ""; |
1685 |
|
|
const char *atmark2 = ""; |
1686 |
|
|
const char *filename1; |
1687 |
|
|
const char *filename2; |
1688 |
kumaneko |
856 |
const u8 perm = ptr->perm; |
1689 |
|
|
u8 bit; |
1690 |
kumaneko |
1052 |
if (ptr->u1_is_group) { |
1691 |
|
|
atmark1 = "@"; |
1692 |
|
|
filename1 = ptr->u1.group1->group_name->name; |
1693 |
|
|
} else { |
1694 |
|
|
filename1 = ptr->u1.filename1->name; |
1695 |
|
|
} |
1696 |
|
|
if (ptr->u2_is_group) { |
1697 |
|
|
atmark2 = "@"; |
1698 |
|
|
filename2 = ptr->u2.group2->group_name->name; |
1699 |
|
|
} else { |
1700 |
|
|
filename2 = ptr->u2.filename2->name; |
1701 |
|
|
} |
1702 |
kumaneko |
856 |
for (bit = head->read_bit; bit < MAX_DOUBLE_PATH_OPERATION; bit++) { |
1703 |
|
|
const char *msg; |
1704 |
kumaneko |
1052 |
if (!(perm & (1 << bit))) |
1705 |
|
|
continue; |
1706 |
|
|
msg = ccs_dp2keyword(bit); |
1707 |
kumaneko |
856 |
pos = head->read_avail; |
1708 |
kumaneko |
1052 |
if (!ccs_io_printf(head, "allow_%s %s%s %s%s", msg, |
1709 |
kumaneko |
1064 |
atmark1, filename1, atmark2, filename2) || |
1710 |
kumaneko |
1054 |
!ccs_print_condition(head, cond)) |
1711 |
kumaneko |
1052 |
goto out; |
1712 |
kumaneko |
856 |
} |
1713 |
kumaneko |
1032 |
head->read_bit = 0; |
1714 |
kumaneko |
1006 |
return true; |
1715 |
kumaneko |
856 |
out: |
1716 |
|
|
head->read_bit = bit; |
1717 |
|
|
head->read_avail = pos; |
1718 |
kumaneko |
1006 |
return false; |
1719 |
kumaneko |
856 |
} |
1720 |
|
|
|
1721 |
kumaneko |
1052 |
/** |
1722 |
kumaneko |
2271 |
* ccs_print_ioctl_acl - Print an ioctl ACL entry. |
1723 |
|
|
* |
1724 |
|
|
* @head: Pointer to "struct ccs_io_buffer". |
1725 |
|
|
* @ptr: Pointer to "struct ccs_ioctl_acl_record". |
1726 |
|
|
* @cond: Pointer to "struct ccs_condition_list". May be NULL. |
1727 |
|
|
* |
1728 |
|
|
* Returns true on success, false otherwise. |
1729 |
|
|
*/ |
1730 |
|
|
static bool ccs_print_ioctl_acl(struct ccs_io_buffer *head, |
1731 |
|
|
struct ccs_ioctl_acl_record *ptr, |
1732 |
|
|
const struct ccs_condition_list *cond) |
1733 |
|
|
{ |
1734 |
|
|
int pos = head->read_avail; |
1735 |
|
|
const char *atmark = ""; |
1736 |
|
|
const char *filename; |
1737 |
|
|
const unsigned int cmd_min = ptr->cmd_min; |
1738 |
|
|
const unsigned int cmd_max = ptr->cmd_max; |
1739 |
|
|
if (ptr->u_is_group) { |
1740 |
|
|
atmark = "@"; |
1741 |
|
|
filename = ptr->u.group->group_name->name; |
1742 |
|
|
} else { |
1743 |
|
|
filename = ptr->u.filename->name; |
1744 |
|
|
} |
1745 |
|
|
if (!ccs_io_printf(head, KEYWORD_ALLOW_IOCTL "%s%s ", atmark, filename)) |
1746 |
|
|
goto out; |
1747 |
|
|
if (!ccs_io_printf(head, "%u", cmd_min)) |
1748 |
|
|
goto out; |
1749 |
|
|
if (cmd_min != cmd_max && !ccs_io_printf(head, "-%u", cmd_max)) |
1750 |
|
|
goto out; |
1751 |
|
|
if (!ccs_print_condition(head, cond)) |
1752 |
|
|
goto out; |
1753 |
|
|
return true; |
1754 |
|
|
out: |
1755 |
|
|
head->read_avail = pos; |
1756 |
|
|
return false; |
1757 |
|
|
} |
1758 |
|
|
|
1759 |
|
|
/** |
1760 |
kumaneko |
2002 |
* ccs_print_argv0_acl - Print an argv[0] ACL entry. |
1761 |
kumaneko |
1052 |
* |
1762 |
|
|
* @head: Pointer to "struct ccs_io_buffer". |
1763 |
kumaneko |
2002 |
* @ptr: Pointer to "struct ccs_argv0_acl_record". |
1764 |
|
|
* @cond: Pointer to "struct ccs_condition_list". May be NULL. |
1765 |
kumaneko |
1052 |
* |
1766 |
|
|
* Returns true on success, false otherwise. |
1767 |
|
|
*/ |
1768 |
kumaneko |
2002 |
static bool ccs_print_argv0_acl(struct ccs_io_buffer *head, |
1769 |
|
|
struct ccs_argv0_acl_record *ptr, |
1770 |
|
|
const struct ccs_condition_list *cond) |
1771 |
kumaneko |
856 |
{ |
1772 |
|
|
int pos = head->read_avail; |
1773 |
kumaneko |
1052 |
if (!ccs_io_printf(head, KEYWORD_ALLOW_ARGV0 "%s %s", |
1774 |
|
|
ptr->filename->name, ptr->argv0->name)) |
1775 |
|
|
goto out; |
1776 |
kumaneko |
1054 |
if (!ccs_print_condition(head, cond)) |
1777 |
kumaneko |
1052 |
goto out; |
1778 |
kumaneko |
1006 |
return true; |
1779 |
kumaneko |
856 |
out: |
1780 |
|
|
head->read_avail = pos; |
1781 |
kumaneko |
1006 |
return false; |
1782 |
kumaneko |
856 |
} |
1783 |
|
|
|
1784 |
kumaneko |
1052 |
/** |
1785 |
kumaneko |
2002 |
* ccs_print_env_acl - Print an evironment variable name's ACL entry. |
1786 |
kumaneko |
1052 |
* |
1787 |
|
|
* @head: Pointer to "struct ccs_io_buffer". |
1788 |
kumaneko |
2002 |
* @ptr: Pointer to "struct ccs_env_acl_record". |
1789 |
|
|
* @cond: Pointer to "struct ccs_condition_list". May be NULL. |
1790 |
kumaneko |
1052 |
* |
1791 |
|
|
* Returns true on success, false otherwise. |
1792 |
|
|
*/ |
1793 |
kumaneko |
2002 |
static bool ccs_print_env_acl(struct ccs_io_buffer *head, |
1794 |
|
|
struct ccs_env_acl_record *ptr, |
1795 |
|
|
const struct ccs_condition_list *cond) |
1796 |
kumaneko |
856 |
{ |
1797 |
|
|
int pos = head->read_avail; |
1798 |
kumaneko |
1052 |
if (!ccs_io_printf(head, KEYWORD_ALLOW_ENV "%s", ptr->env->name)) |
1799 |
|
|
goto out; |
1800 |
kumaneko |
1054 |
if (!ccs_print_condition(head, cond)) |
1801 |
kumaneko |
1052 |
goto out; |
1802 |
kumaneko |
1006 |
return true; |
1803 |
kumaneko |
856 |
out: |
1804 |
|
|
head->read_avail = pos; |
1805 |
kumaneko |
1006 |
return false; |
1806 |
kumaneko |
856 |
} |
1807 |
|
|
|
1808 |
kumaneko |
1052 |
/** |
1809 |
kumaneko |
2002 |
* ccs_print_capability_acl - Print a capability ACL entry. |
1810 |
kumaneko |
1052 |
* |
1811 |
|
|
* @head: Pointer to "struct ccs_io_buffer". |
1812 |
kumaneko |
2002 |
* @ptr: Pointer to "struct ccs_capability_acl_record". |
1813 |
|
|
* @cond: Pointer to "struct ccs_condition_list". May be NULL. |
1814 |
kumaneko |
1052 |
* |
1815 |
|
|
* Returns true on success, false otherwise. |
1816 |
|
|
*/ |
1817 |
kumaneko |
2002 |
static bool ccs_print_capability_acl(struct ccs_io_buffer *head, |
1818 |
|
|
struct ccs_capability_acl_record *ptr, |
1819 |
|
|
const struct ccs_condition_list *cond) |
1820 |
kumaneko |
856 |
{ |
1821 |
kumaneko |
860 |
int pos = head->read_avail; |
1822 |
kumaneko |
1052 |
if (!ccs_io_printf(head, KEYWORD_ALLOW_CAPABILITY "%s", |
1823 |
|
|
ccs_cap2keyword(ptr->operation))) |
1824 |
|
|
goto out; |
1825 |
kumaneko |
1054 |
if (!ccs_print_condition(head, cond)) |
1826 |
kumaneko |
1052 |
goto out; |
1827 |
kumaneko |
1006 |
return true; |
1828 |
kumaneko |
856 |
out: |
1829 |
|
|
head->read_avail = pos; |
1830 |
kumaneko |
1006 |
return false; |
1831 |
kumaneko |
856 |
} |
1832 |
|
|
|
1833 |
kumaneko |
1052 |
/** |
1834 |
kumaneko |
2002 |
* ccs_print_ipv4_entry - Print IPv4 address of a network ACL entry. |
1835 |
kumaneko |
1052 |
* |
1836 |
|
|
* @head: Pointer to "struct ccs_io_buffer". |
1837 |
kumaneko |
2002 |
* @ptr: Pointer to "struct ccs_ip_network_acl_record". |
1838 |
kumaneko |
1052 |
* |
1839 |
|
|
* Returns true on success, false otherwise. |
1840 |
|
|
*/ |
1841 |
kumaneko |
2002 |
static bool ccs_print_ipv4_entry(struct ccs_io_buffer *head, |
1842 |
|
|
struct ccs_ip_network_acl_record *ptr) |
1843 |
kumaneko |
856 |
{ |
1844 |
kumaneko |
1052 |
const u32 min_address = ptr->u.ipv4.min; |
1845 |
|
|
const u32 max_address = ptr->u.ipv4.max; |
1846 |
|
|
if (!ccs_io_printf(head, "%u.%u.%u.%u", HIPQUAD(min_address))) |
1847 |
|
|
return false; |
1848 |
|
|
if (min_address != max_address |
1849 |
|
|
&& !ccs_io_printf(head, "-%u.%u.%u.%u", HIPQUAD(max_address))) |
1850 |
|
|
return false; |
1851 |
|
|
return true; |
1852 |
|
|
} |
1853 |
|
|
|
1854 |
|
|
/** |
1855 |
kumaneko |
2002 |
* ccs_print_ipv6_entry - Print IPv6 address of a network ACL entry. |
1856 |
kumaneko |
1052 |
* |
1857 |
|
|
* @head: Pointer to "struct ccs_io_buffer". |
1858 |
kumaneko |
2002 |
* @ptr: Pointer to "struct ccs_ip_network_acl_record". |
1859 |
kumaneko |
1052 |
* |
1860 |
|
|
* Returns true on success, false otherwise. |
1861 |
|
|
*/ |
1862 |
kumaneko |
2002 |
static bool ccs_print_ipv6_entry(struct ccs_io_buffer *head, |
1863 |
|
|
struct ccs_ip_network_acl_record *ptr) |
1864 |
kumaneko |
1052 |
{ |
1865 |
|
|
char buf[64]; |
1866 |
|
|
const struct in6_addr *min_address = ptr->u.ipv6.min; |
1867 |
|
|
const struct in6_addr *max_address = ptr->u.ipv6.max; |
1868 |
|
|
ccs_print_ipv6(buf, sizeof(buf), min_address); |
1869 |
|
|
if (!ccs_io_printf(head, "%s", buf)) |
1870 |
|
|
return false; |
1871 |
|
|
if (min_address != max_address) { |
1872 |
|
|
ccs_print_ipv6(buf, sizeof(buf), max_address); |
1873 |
|
|
if (!ccs_io_printf(head, "-%s", buf)) |
1874 |
|
|
return false; |
1875 |
|
|
} |
1876 |
|
|
return true; |
1877 |
|
|
} |
1878 |
|
|
|
1879 |
|
|
/** |
1880 |
kumaneko |
2002 |
* ccs_print_port_entry - Print port number of a network ACL entry. |
1881 |
kumaneko |
1052 |
* |
1882 |
|
|
* @head: Pointer to "struct ccs_io_buffer". |
1883 |
kumaneko |
2002 |
* @ptr: Pointer to "struct ccs_ip_network_acl_record". |
1884 |
kumaneko |
1052 |
* |
1885 |
|
|
* Returns true on success, false otherwise. |
1886 |
|
|
*/ |
1887 |
kumaneko |
2002 |
static bool ccs_print_port_entry(struct ccs_io_buffer *head, |
1888 |
|
|
struct ccs_ip_network_acl_record *ptr) |
1889 |
kumaneko |
1052 |
{ |
1890 |
kumaneko |
2046 |
const u16 min_port = ptr->min_port; |
1891 |
|
|
const u16 max_port = ptr->max_port; |
1892 |
kumaneko |
1052 |
if (!ccs_io_printf(head, " %u", min_port)) |
1893 |
|
|
return false; |
1894 |
|
|
if (min_port != max_port && !ccs_io_printf(head, "-%u", max_port)) |
1895 |
|
|
return false; |
1896 |
|
|
return true; |
1897 |
|
|
} |
1898 |
|
|
|
1899 |
|
|
/** |
1900 |
kumaneko |
2002 |
* ccs_print_network_acl - Print a network ACL entry. |
1901 |
kumaneko |
1052 |
* |
1902 |
|
|
* @head: Pointer to "struct ccs_io_buffer". |
1903 |
kumaneko |
2002 |
* @ptr: Pointer to "struct ccs_ip_network_acl_record". |
1904 |
|
|
* @cond: Pointer to "struct ccs_condition_list". May be NULL. |
1905 |
kumaneko |
1052 |
* |
1906 |
|
|
* Returns true on success, false otherwise. |
1907 |
|
|
*/ |
1908 |
kumaneko |
2002 |
static bool ccs_print_network_acl(struct ccs_io_buffer *head, |
1909 |
|
|
struct ccs_ip_network_acl_record *ptr, |
1910 |
|
|
const struct ccs_condition_list *cond) |
1911 |
kumaneko |
1052 |
{ |
1912 |
kumaneko |
856 |
int pos = head->read_avail; |
1913 |
kumaneko |
1052 |
if (!ccs_io_printf(head, KEYWORD_ALLOW_NETWORK "%s ", |
1914 |
|
|
ccs_net2keyword(ptr->operation_type))) |
1915 |
|
|
goto out; |
1916 |
kumaneko |
856 |
switch (ptr->record_type) { |
1917 |
|
|
case IP_RECORD_TYPE_ADDRESS_GROUP: |
1918 |
kumaneko |
1052 |
if (!ccs_io_printf(head, "@%s", ptr->u.group->group_name->name)) |
1919 |
|
|
goto out; |
1920 |
kumaneko |
856 |
break; |
1921 |
|
|
case IP_RECORD_TYPE_IPv4: |
1922 |
kumaneko |
2002 |
if (!ccs_print_ipv4_entry(head, ptr)) |
1923 |
kumaneko |
1052 |
goto out; |
1924 |
kumaneko |
856 |
break; |
1925 |
|
|
case IP_RECORD_TYPE_IPv6: |
1926 |
kumaneko |
2002 |
if (!ccs_print_ipv6_entry(head, ptr)) |
1927 |
kumaneko |
1052 |
goto out; |
1928 |
kumaneko |
856 |
break; |
1929 |
|
|
} |
1930 |
kumaneko |
2002 |
if (!ccs_print_port_entry(head, ptr)) |
1931 |
kumaneko |
1052 |
goto out; |
1932 |
kumaneko |
1054 |
if (!ccs_print_condition(head, cond)) |
1933 |
kumaneko |
1052 |
goto out; |
1934 |
kumaneko |
1006 |
return true; |
1935 |
kumaneko |
856 |
out: |
1936 |
|
|
head->read_avail = pos; |
1937 |
kumaneko |
1006 |
return false; |
1938 |
kumaneko |
856 |
} |
1939 |
|
|
|
1940 |
kumaneko |
1052 |
/** |
1941 |
kumaneko |
2002 |
* ccs_print_signal_acl - Print a signal ACL entry. |
1942 |
kumaneko |
1052 |
* |
1943 |
|
|
* @head: Pointer to "struct ccs_io_buffer". |
1944 |
|
|
* @ptr: Pointer to "struct signale_acl_record". |
1945 |
kumaneko |
2002 |
* @cond: Pointer to "struct ccs_condition_list". May be NULL. |
1946 |
kumaneko |
1052 |
* |
1947 |
|
|
* Returns true on success, false otherwise. |
1948 |
|
|
*/ |
1949 |
kumaneko |
2002 |
static bool ccs_print_signal_acl(struct ccs_io_buffer *head, |
1950 |
|
|
struct ccs_signal_acl_record *ptr, |
1951 |
|
|
const struct ccs_condition_list *cond) |
1952 |
kumaneko |
856 |
{ |
1953 |
|
|
int pos = head->read_avail; |
1954 |
kumaneko |
1052 |
if (!ccs_io_printf(head, KEYWORD_ALLOW_SIGNAL "%u %s", |
1955 |
|
|
ptr->sig, ptr->domainname->name)) |
1956 |
|
|
goto out; |
1957 |
kumaneko |
1054 |
if (!ccs_print_condition(head, cond)) |
1958 |
kumaneko |
1052 |
goto out; |
1959 |
kumaneko |
1006 |
return true; |
1960 |
kumaneko |
856 |
out: |
1961 |
|
|
head->read_avail = pos; |
1962 |
kumaneko |
1006 |
return false; |
1963 |
kumaneko |
856 |
} |
1964 |
|
|
|
1965 |
kumaneko |
1052 |
/** |
1966 |
kumaneko |
2002 |
* ccs_print_execute_handler_record - Print an execute handler ACL entry. |
1967 |
kumaneko |
1052 |
* |
1968 |
|
|
* @head: Pointer to "struct ccs_io_buffer". |
1969 |
|
|
* @keyword: Name of the keyword. |
1970 |
kumaneko |
2002 |
* @ptr: Pointer to "struct ccs_execute_handler_record". |
1971 |
kumaneko |
1052 |
* |
1972 |
|
|
* Returns true on success, false otherwise. |
1973 |
|
|
*/ |
1974 |
kumaneko |
2002 |
static bool ccs_print_execute_handler_record(struct ccs_io_buffer *head, |
1975 |
|
|
const char *keyword, |
1976 |
|
|
struct ccs_execute_handler_record * |
1977 |
|
|
ptr) |
1978 |
kumaneko |
1029 |
{ |
1979 |
kumaneko |
1052 |
return ccs_io_printf(head, "%s %s\n", keyword, ptr->handler->name); |
1980 |
kumaneko |
1029 |
} |
1981 |
|
|
|
1982 |
kumaneko |
1052 |
/** |
1983 |
kumaneko |
2002 |
* ccs_print_entry - Print an ACL entry. |
1984 |
kumaneko |
1052 |
* |
1985 |
|
|
* @head: Pointer to "struct ccs_io_buffer". |
1986 |
|
|
* @ptr: Pointer to an ACL entry. |
1987 |
|
|
* |
1988 |
|
|
* Returns true on success, false otherwise. |
1989 |
|
|
*/ |
1990 |
kumaneko |
2002 |
static bool ccs_print_entry(struct ccs_io_buffer *head, |
1991 |
|
|
struct ccs_acl_info *ptr) |
1992 |
kumaneko |
111 |
{ |
1993 |
kumaneko |
2002 |
const struct ccs_condition_list *cond = ccs_get_condition_part(ptr); |
1994 |
kumaneko |
1064 |
const u8 acl_type = ccs_acl_type2(ptr); |
1995 |
kumaneko |
1052 |
if (acl_type & ACL_DELETED) |
1996 |
|
|
return true; |
1997 |
|
|
if (acl_type == TYPE_SINGLE_PATH_ACL) { |
1998 |
kumaneko |
2002 |
struct ccs_single_path_acl_record *acl |
1999 |
|
|
= container_of(ptr, struct ccs_single_path_acl_record, |
2000 |
kumaneko |
1052 |
head); |
2001 |
kumaneko |
2002 |
return ccs_print_single_path_acl(head, acl, cond); |
2002 |
kumaneko |
1052 |
} |
2003 |
kumaneko |
1926 |
if (acl_type == TYPE_EXECUTE_HANDLER) { |
2004 |
kumaneko |
2002 |
struct ccs_execute_handler_record *acl |
2005 |
|
|
= container_of(ptr, struct ccs_execute_handler_record, |
2006 |
kumaneko |
1926 |
head); |
2007 |
|
|
const char *keyword = KEYWORD_EXECUTE_HANDLER; |
2008 |
kumaneko |
2002 |
return ccs_print_execute_handler_record(head, keyword, acl); |
2009 |
kumaneko |
1926 |
} |
2010 |
|
|
if (acl_type == TYPE_DENIED_EXECUTE_HANDLER) { |
2011 |
kumaneko |
2002 |
struct ccs_execute_handler_record *acl |
2012 |
|
|
= container_of(ptr, struct ccs_execute_handler_record, |
2013 |
kumaneko |
1926 |
head); |
2014 |
|
|
const char *keyword = KEYWORD_DENIED_EXECUTE_HANDLER; |
2015 |
kumaneko |
2002 |
return ccs_print_execute_handler_record(head, keyword, acl); |
2016 |
kumaneko |
1926 |
} |
2017 |
|
|
if (head->read_execute_only) |
2018 |
|
|
return true; |
2019 |
kumaneko |
1052 |
if (acl_type == TYPE_DOUBLE_PATH_ACL) { |
2020 |
kumaneko |
2002 |
struct ccs_double_path_acl_record *acl |
2021 |
|
|
= container_of(ptr, struct ccs_double_path_acl_record, |
2022 |
kumaneko |
1052 |
head); |
2023 |
kumaneko |
2002 |
return ccs_print_double_path_acl(head, acl, cond); |
2024 |
kumaneko |
1052 |
} |
2025 |
kumaneko |
2271 |
if (acl_type == TYPE_IOCTL_ACL) { |
2026 |
|
|
struct ccs_ioctl_acl_record *acl |
2027 |
|
|
= container_of(ptr, struct ccs_ioctl_acl_record, head); |
2028 |
|
|
return ccs_print_ioctl_acl(head, acl, cond); |
2029 |
|
|
} |
2030 |
kumaneko |
1052 |
if (acl_type == TYPE_ARGV0_ACL) { |
2031 |
kumaneko |
2002 |
struct ccs_argv0_acl_record *acl |
2032 |
|
|
= container_of(ptr, struct ccs_argv0_acl_record, head); |
2033 |
|
|
return ccs_print_argv0_acl(head, acl, cond); |
2034 |
kumaneko |
1052 |
} |
2035 |
|
|
if (acl_type == TYPE_ENV_ACL) { |
2036 |
kumaneko |
2002 |
struct ccs_env_acl_record *acl |
2037 |
|
|
= container_of(ptr, struct ccs_env_acl_record, head); |
2038 |
|
|
return ccs_print_env_acl(head, acl, cond); |
2039 |
kumaneko |
1052 |
} |
2040 |
|
|
if (acl_type == TYPE_CAPABILITY_ACL) { |
2041 |
kumaneko |
2002 |
struct ccs_capability_acl_record *acl |
2042 |
|
|
= container_of(ptr, struct ccs_capability_acl_record, |
2043 |
|
|
head); |
2044 |
|
|
return ccs_print_capability_acl(head, acl, cond); |
2045 |
kumaneko |
1052 |
} |
2046 |
|
|
if (acl_type == TYPE_IP_NETWORK_ACL) { |
2047 |
kumaneko |
2002 |
struct ccs_ip_network_acl_record *acl |
2048 |
|
|
= container_of(ptr, struct ccs_ip_network_acl_record, |
2049 |
|
|
head); |
2050 |
|
|
return ccs_print_network_acl(head, acl, cond); |
2051 |
kumaneko |
1052 |
} |
2052 |
|
|
if (acl_type == TYPE_SIGNAL_ACL) { |
2053 |
kumaneko |
2002 |
struct ccs_signal_acl_record *acl |
2054 |
|
|
= container_of(ptr, struct ccs_signal_acl_record, head); |
2055 |
|
|
return ccs_print_signal_acl(head, acl, cond); |
2056 |
kumaneko |
1052 |
} |
2057 |
kumaneko |
1120 |
/* Workaround for gcc 3.2.2's inline bug. */ |
2058 |
|
|
if (acl_type & ACL_DELETED) |
2059 |
|
|
return true; |
2060 |
kumaneko |
1052 |
BUG(); /* This must not happen. */ |
2061 |
|
|
return false; |
2062 |
|
|
} |
2063 |
|
|
|
2064 |
|
|
/** |
2065 |
kumaneko |
2002 |
* ccs_read_domain_policy - Read domain policy. |
2066 |
kumaneko |
1052 |
* |
2067 |
|
|
* @head: Pointer to "struct ccs_io_buffer". |
2068 |
|
|
* |
2069 |
|
|
* Returns 0. |
2070 |
|
|
*/ |
2071 |
kumaneko |
2002 |
static int ccs_read_domain_policy(struct ccs_io_buffer *head) |
2072 |
kumaneko |
1052 |
{ |
2073 |
kumaneko |
722 |
struct list1_head *dpos; |
2074 |
|
|
struct list1_head *apos; |
2075 |
kumaneko |
1052 |
if (head->read_eof) |
2076 |
|
|
return 0; |
2077 |
|
|
if (head->read_step == 0) |
2078 |
|
|
head->read_step = 1; |
2079 |
kumaneko |
2002 |
list1_for_each_cookie(dpos, head->read_var1, &ccs_domain_list) { |
2080 |
kumaneko |
2282 |
struct ccs_domain_info *domain; |
2081 |
kumaneko |
1052 |
const char *quota_exceeded = ""; |
2082 |
kumaneko |
1180 |
const char *transition_failed = ""; |
2083 |
kumaneko |
1052 |
const char *ignore_global_allow_read = ""; |
2084 |
|
|
const char *ignore_global_allow_env = ""; |
2085 |
kumaneko |
2282 |
domain = list1_entry(dpos, struct ccs_domain_info, list); |
2086 |
kumaneko |
1052 |
if (head->read_step != 1) |
2087 |
|
|
goto acl_loop; |
2088 |
kumaneko |
1609 |
if (domain->is_deleted && !head->read_single_domain) |
2089 |
|
|
continue; |
2090 |
kumaneko |
1054 |
/* Print domainname and flags. */ |
2091 |
kumaneko |
1052 |
if (domain->quota_warned) |
2092 |
|
|
quota_exceeded = "quota_exceeded\n"; |
2093 |
kumaneko |
1180 |
if (domain->flags & DOMAIN_FLAGS_TRANSITION_FAILED) |
2094 |
|
|
transition_failed = "transition_failed\n"; |
2095 |
kumaneko |
1052 |
if (domain->flags & DOMAIN_FLAGS_IGNORE_GLOBAL_ALLOW_READ) |
2096 |
|
|
ignore_global_allow_read |
2097 |
|
|
= KEYWORD_IGNORE_GLOBAL_ALLOW_READ "\n"; |
2098 |
|
|
if (domain->flags & DOMAIN_FLAGS_IGNORE_GLOBAL_ALLOW_ENV) |
2099 |
|
|
ignore_global_allow_env |
2100 |
|
|
= KEYWORD_IGNORE_GLOBAL_ALLOW_ENV "\n"; |
2101 |
kumaneko |
1609 |
if (!ccs_io_printf(head, "%s\n" KEYWORD_USE_PROFILE "%u\n" |
2102 |
|
|
"%s%s%s%s\n", domain->domainname->name, |
2103 |
|
|
domain->profile, quota_exceeded, |
2104 |
|
|
transition_failed, |
2105 |
kumaneko |
1052 |
ignore_global_allow_read, |
2106 |
|
|
ignore_global_allow_env)) |
2107 |
|
|
return 0; |
2108 |
kumaneko |
708 |
head->read_step = 2; |
2109 |
kumaneko |
2041 |
acl_loop: |
2110 |
kumaneko |
1052 |
if (head->read_step == 3) |
2111 |
|
|
goto tail_mark; |
2112 |
kumaneko |
1054 |
/* Print ACL entries in the domain. */ |
2113 |
kumaneko |
1052 |
list1_for_each_cookie(apos, head->read_var2, |
2114 |
|
|
&domain->acl_info_list) { |
2115 |
kumaneko |
2002 |
struct ccs_acl_info *ptr |
2116 |
|
|
= list1_entry(apos, struct ccs_acl_info, list); |
2117 |
|
|
if (!ccs_print_entry(head, ptr)) |
2118 |
kumaneko |
1052 |
return 0; |
2119 |
kumaneko |
111 |
} |
2120 |
kumaneko |
708 |
head->read_step = 3; |
2121 |
kumaneko |
2041 |
tail_mark: |
2122 |
kumaneko |
1052 |
if (!ccs_io_printf(head, "\n")) |
2123 |
|
|
return 0; |
2124 |
kumaneko |
708 |
head->read_step = 1; |
2125 |
kumaneko |
1606 |
if (head->read_single_domain) |
2126 |
|
|
break; |
2127 |
kumaneko |
111 |
} |
2128 |
kumaneko |
1006 |
head->read_eof = true; |
2129 |
kumaneko |
111 |
return 0; |
2130 |
|
|
} |
2131 |
|
|
|
2132 |
kumaneko |
461 |
#endif |
2133 |
|
|
|
2134 |
kumaneko |
1052 |
/** |
2135 |
kumaneko |
2002 |
* ccs_write_domain_profile - Assign profile for specified domain. |
2136 |
kumaneko |
1052 |
* |
2137 |
|
|
* @head: Pointer to "struct ccs_io_buffer". |
2138 |
|
|
* |
2139 |
|
|
* Returns 0 on success, -EINVAL otherwise. |
2140 |
|
|
* |
2141 |
|
|
* This is equivalent to doing |
2142 |
kumaneko |
1054 |
* |
2143 |
|
|
* ( echo "select " $domainname; echo "use_profile " $profile ) | |
2144 |
kumaneko |
1057 |
* /usr/lib/ccs/loadpolicy -d |
2145 |
kumaneko |
1052 |
*/ |
2146 |
kumaneko |
2002 |
static int ccs_write_domain_profile(struct ccs_io_buffer *head) |
2147 |
kumaneko |
461 |
{ |
2148 |
|
|
char *data = head->write_buf; |
2149 |
|
|
char *cp = strchr(data, ' '); |
2150 |
kumaneko |
2282 |
struct ccs_domain_info *domain; |
2151 |
kumaneko |
461 |
unsigned int profile; |
2152 |
kumaneko |
1052 |
if (!cp) |
2153 |
|
|
return -EINVAL; |
2154 |
kumaneko |
461 |
*cp = '\0'; |
2155 |
kumaneko |
1052 |
domain = ccs_find_domain(cp + 1); |
2156 |
kumaneko |
461 |
profile = simple_strtoul(data, NULL, 10); |
2157 |
kumaneko |
1052 |
if (domain && profile < MAX_PROFILES |
2158 |
kumaneko |
2040 |
&& (ccs_profile_ptr[profile] || !ccs_policy_loaded)) |
2159 |
kumaneko |
1052 |
domain->profile = (u8) profile; |
2160 |
|
|
ccs_update_counter(CCS_UPDATES_COUNTER_DOMAIN_POLICY); |
2161 |
kumaneko |
461 |
return 0; |
2162 |
|
|
} |
2163 |
|
|
|
2164 |
kumaneko |
1052 |
/** |
2165 |
kumaneko |
2002 |
* ccs_read_domain_profile - Read only domainname and profile. |
2166 |
kumaneko |
1052 |
* |
2167 |
|
|
* @head: Pointer to "struct ccs_io_buffer". |
2168 |
|
|
* |
2169 |
|
|
* Returns list of profile number and domainname pairs. |
2170 |
|
|
* |
2171 |
|
|
* This is equivalent to doing |
2172 |
kumaneko |
1054 |
* |
2173 |
|
|
* grep -A 1 '^<kernel>' /proc/ccs/domain_policy | |
2174 |
kumaneko |
1057 |
* awk ' { if ( domainname == "" ) { if ( $1 == "<kernel>" ) |
2175 |
|
|
* domainname = $0; } else if ( $1 == "use_profile" ) { |
2176 |
|
|
* print $2 " " domainname; domainname = ""; } } ; ' |
2177 |
kumaneko |
1052 |
*/ |
2178 |
kumaneko |
2002 |
static int ccs_read_domain_profile(struct ccs_io_buffer *head) |
2179 |
kumaneko |
111 |
{ |
2180 |
kumaneko |
722 |
struct list1_head *pos; |
2181 |
kumaneko |
1052 |
if (head->read_eof) |
2182 |
|
|
return 0; |
2183 |
kumaneko |
2002 |
list1_for_each_cookie(pos, head->read_var1, &ccs_domain_list) { |
2184 |
kumaneko |
2282 |
struct ccs_domain_info *domain; |
2185 |
|
|
domain = list1_entry(pos, struct ccs_domain_info, list); |
2186 |
kumaneko |
1052 |
if (domain->is_deleted) |
2187 |
|
|
continue; |
2188 |
|
|
if (!ccs_io_printf(head, "%u %s\n", domain->profile, |
2189 |
|
|
domain->domainname->name)) |
2190 |
|
|
return 0; |
2191 |
kumaneko |
111 |
} |
2192 |
kumaneko |
1006 |
head->read_eof = true; |
2193 |
kumaneko |
111 |
return 0; |
2194 |
|
|
} |
2195 |
|
|
|
2196 |
kumaneko |
1052 |
/** |
2197 |
kumaneko |
2002 |
* ccs_write_pid: Specify PID to obtain domainname. |
2198 |
kumaneko |
1052 |
* |
2199 |
|
|
* @head: Pointer to "struct ccs_io_buffer". |
2200 |
|
|
* |
2201 |
|
|
* Returns 0. |
2202 |
|
|
*/ |
2203 |
kumaneko |
2002 |
static int ccs_write_pid(struct ccs_io_buffer *head) |
2204 |
kumaneko |
111 |
{ |
2205 |
kumaneko |
1006 |
head->read_eof = false; |
2206 |
kumaneko |
111 |
return 0; |
2207 |
|
|
} |
2208 |
|
|
|
2209 |
kumaneko |
1052 |
/** |
2210 |
kumaneko |
2002 |
* ccs_read_pid - Read information of a process. |
2211 |
kumaneko |
1052 |
* |
2212 |
|
|
* @head: Pointer to "struct ccs_io_buffer". |
2213 |
|
|
* |
2214 |
kumaneko |
1705 |
* Returns the domainname which the specified PID is in or |
2215 |
|
|
* process information of the specified PID on success, |
2216 |
kumaneko |
1052 |
* empty string otherwise. |
2217 |
|
|
*/ |
2218 |
kumaneko |
2002 |
static int ccs_read_pid(struct ccs_io_buffer *head) |
2219 |
kumaneko |
111 |
{ |
2220 |
kumaneko |
1705 |
char *buf = head->write_buf; |
2221 |
|
|
bool task_info = false; |
2222 |
|
|
unsigned int pid; |
2223 |
|
|
struct task_struct *p; |
2224 |
kumaneko |
2282 |
struct ccs_domain_info *domain = NULL; |
2225 |
|
|
u32 ccs_flags = 0; |
2226 |
kumaneko |
1810 |
/* Accessing write_buf is safe because head->io_sem is held. */ |
2227 |
kumaneko |
1809 |
if (!buf) |
2228 |
|
|
goto done; /* Do nothing if open(O_RDONLY). */ |
2229 |
kumaneko |
1705 |
if (head->read_avail || head->read_eof) |
2230 |
|
|
goto done; |
2231 |
|
|
head->read_eof = true; |
2232 |
kumaneko |
2002 |
if (ccs_str_starts(&buf, "info ")) |
2233 |
kumaneko |
1705 |
task_info = true; |
2234 |
|
|
pid = (unsigned int) simple_strtoul(buf, NULL, 10); |
2235 |
|
|
/***** CRITICAL SECTION START *****/ |
2236 |
|
|
read_lock(&tasklist_lock); |
2237 |
|
|
p = find_task_by_pid(pid); |
2238 |
|
|
if (p) { |
2239 |
kumaneko |
2282 |
domain = ccs_task_domain(p); |
2240 |
|
|
ccs_flags = p->ccs_flags; |
2241 |
kumaneko |
111 |
} |
2242 |
kumaneko |
1705 |
read_unlock(&tasklist_lock); |
2243 |
|
|
/***** CRITICAL SECTION END *****/ |
2244 |
|
|
if (!domain) |
2245 |
|
|
goto done; |
2246 |
|
|
if (!task_info) |
2247 |
|
|
ccs_io_printf(head, "%u %u %s", pid, domain->profile, |
2248 |
|
|
domain->domainname->name); |
2249 |
|
|
else |
2250 |
|
|
ccs_io_printf(head, "%u manager=%s execute_handler=%s " |
2251 |
|
|
"state[0]=%u state[1]=%u state[2]=%u", pid, |
2252 |
kumaneko |
2282 |
ccs_flags & CCS_TASK_IS_POLICY_MANAGER ? |
2253 |
kumaneko |
1705 |
"yes" : "no", |
2254 |
kumaneko |
2282 |
ccs_flags & CCS_TASK_IS_EXECUTE_HANDLER ? |
2255 |
kumaneko |
1705 |
"yes" : "no", |
2256 |
kumaneko |
2282 |
(u8) (ccs_flags >> 24), |
2257 |
|
|
(u8) (ccs_flags >> 16), |
2258 |
|
|
(u8) (ccs_flags >> 8)); |
2259 |
kumaneko |
1705 |
done: |
2260 |
kumaneko |
111 |
return 0; |
2261 |
|
|
} |
2262 |
|
|
|
2263 |
|
|
#ifdef CONFIG_TOMOYO |
2264 |
|
|
|
2265 |
kumaneko |
1052 |
/** |
2266 |
kumaneko |
2002 |
* ccs_write_exception_policy - Write exception policy. |
2267 |
kumaneko |
1052 |
* |
2268 |
|
|
* @head: Pointer to "struct ccs_io_buffer". |
2269 |
|
|
* |
2270 |
|
|
* Returns 0 on success, negative value otherwise. |
2271 |
|
|
*/ |
2272 |
kumaneko |
2002 |
static int ccs_write_exception_policy(struct ccs_io_buffer *head) |
2273 |
kumaneko |
111 |
{ |
2274 |
|
|
char *data = head->write_buf; |
2275 |
kumaneko |
|