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Commit eae61f3c829439f8f9121b5cd48a14be04df451f

Authored by Tetsuo Handa
Committed by James Morris
1 parent 1adace9bb0
Exists in master and in 7 other branches imx_3.0.35_4.1.0, imx_3.10.17_1.0.1_ga, imx_3.10.53_1.1.0_ga, imx_3.14.28_1.0.0_ga, smarc-imx_3.10.53_1.1.0_ga, smarc-imx_3.14.28_1.0.0_ga, smarc-l5.0.0_1.0.0-ga

TOMOYO: Fix memory leak upon file open. 

In tomoyo_check_open_permission() since 2.6.36, TOMOYO was by error
recalculating already calculated pathname when checking allow_rewrite
permission. As a result, memory will leak whenever a file is opened for writing
without O_APPEND flag. Also, performance will degrade because TOMOYO is
calculating pathname regardless of profile configuration.
This patch fixes the leak and performance degrade.

Signed-off-by: Tetsuo Handa <penguin-kernel@I-love.SAKURA.ne.jp>
Signed-off-by: James Morris <jmorris@namei.org>

Showing 1 changed file with 1 additions and 4 deletions Inline Diff

security/tomoyo/file.c
Diff comments   View file @ eae61f3
1 /* 1 /*
2 * security/tomoyo/file.c 2 * security/tomoyo/file.c
3 * 3 *
4 * Pathname restriction functions. 4 * Pathname restriction functions.
5 * 5 *
6 * Copyright (C) 2005-2010 NTT DATA CORPORATION 6 * Copyright (C) 2005-2010 NTT DATA CORPORATION
7 */ 7 */
8 8
9 #include "common.h" 9 #include "common.h"
10 #include <linux/slab.h> 10 #include <linux/slab.h>
11 11
12 /* Keyword array for operations with one pathname. */ 12 /* Keyword array for operations with one pathname. */
13 const char *tomoyo_path_keyword[TOMOYO_MAX_PATH_OPERATION] = { 13 const char *tomoyo_path_keyword[TOMOYO_MAX_PATH_OPERATION] = {
14 [TOMOYO_TYPE_READ_WRITE] = "read/write", 14 [TOMOYO_TYPE_READ_WRITE] = "read/write",
15 [TOMOYO_TYPE_EXECUTE] = "execute", 15 [TOMOYO_TYPE_EXECUTE] = "execute",
16 [TOMOYO_TYPE_READ] = "read", 16 [TOMOYO_TYPE_READ] = "read",
17 [TOMOYO_TYPE_WRITE] = "write", 17 [TOMOYO_TYPE_WRITE] = "write",
18 [TOMOYO_TYPE_UNLINK] = "unlink", 18 [TOMOYO_TYPE_UNLINK] = "unlink",
19 [TOMOYO_TYPE_RMDIR] = "rmdir", 19 [TOMOYO_TYPE_RMDIR] = "rmdir",
20 [TOMOYO_TYPE_TRUNCATE] = "truncate", 20 [TOMOYO_TYPE_TRUNCATE] = "truncate",
21 [TOMOYO_TYPE_SYMLINK] = "symlink", 21 [TOMOYO_TYPE_SYMLINK] = "symlink",
22 [TOMOYO_TYPE_REWRITE] = "rewrite", 22 [TOMOYO_TYPE_REWRITE] = "rewrite",
23 [TOMOYO_TYPE_CHROOT] = "chroot", 23 [TOMOYO_TYPE_CHROOT] = "chroot",
24 [TOMOYO_TYPE_UMOUNT] = "unmount", 24 [TOMOYO_TYPE_UMOUNT] = "unmount",
25 }; 25 };
26 26
27 /* Keyword array for operations with one pathname and three numbers. */ 27 /* Keyword array for operations with one pathname and three numbers. */
28 const char *tomoyo_mkdev_keyword[TOMOYO_MAX_MKDEV_OPERATION] = { 28 const char *tomoyo_mkdev_keyword[TOMOYO_MAX_MKDEV_OPERATION] = {
29 [TOMOYO_TYPE_MKBLOCK] = "mkblock", 29 [TOMOYO_TYPE_MKBLOCK] = "mkblock",
30 [TOMOYO_TYPE_MKCHAR] = "mkchar", 30 [TOMOYO_TYPE_MKCHAR] = "mkchar",
31 }; 31 };
32 32
33 /* Keyword array for operations with two pathnames. */ 33 /* Keyword array for operations with two pathnames. */
34 const char *tomoyo_path2_keyword[TOMOYO_MAX_PATH2_OPERATION] = { 34 const char *tomoyo_path2_keyword[TOMOYO_MAX_PATH2_OPERATION] = {
35 [TOMOYO_TYPE_LINK] = "link", 35 [TOMOYO_TYPE_LINK] = "link",
36 [TOMOYO_TYPE_RENAME] = "rename", 36 [TOMOYO_TYPE_RENAME] = "rename",
37 [TOMOYO_TYPE_PIVOT_ROOT] = "pivot_root", 37 [TOMOYO_TYPE_PIVOT_ROOT] = "pivot_root",
38 }; 38 };
39 39
40 /* Keyword array for operations with one pathname and one number. */ 40 /* Keyword array for operations with one pathname and one number. */
41 const char *tomoyo_path_number_keyword[TOMOYO_MAX_PATH_NUMBER_OPERATION] = { 41 const char *tomoyo_path_number_keyword[TOMOYO_MAX_PATH_NUMBER_OPERATION] = {
42 [TOMOYO_TYPE_CREATE] = "create", 42 [TOMOYO_TYPE_CREATE] = "create",
43 [TOMOYO_TYPE_MKDIR] = "mkdir", 43 [TOMOYO_TYPE_MKDIR] = "mkdir",
44 [TOMOYO_TYPE_MKFIFO] = "mkfifo", 44 [TOMOYO_TYPE_MKFIFO] = "mkfifo",
45 [TOMOYO_TYPE_MKSOCK] = "mksock", 45 [TOMOYO_TYPE_MKSOCK] = "mksock",
46 [TOMOYO_TYPE_IOCTL] = "ioctl", 46 [TOMOYO_TYPE_IOCTL] = "ioctl",
47 [TOMOYO_TYPE_CHMOD] = "chmod", 47 [TOMOYO_TYPE_CHMOD] = "chmod",
48 [TOMOYO_TYPE_CHOWN] = "chown", 48 [TOMOYO_TYPE_CHOWN] = "chown",
49 [TOMOYO_TYPE_CHGRP] = "chgrp", 49 [TOMOYO_TYPE_CHGRP] = "chgrp",
50 }; 50 };
51 51
52 static const u8 tomoyo_p2mac[TOMOYO_MAX_PATH_OPERATION] = { 52 static const u8 tomoyo_p2mac[TOMOYO_MAX_PATH_OPERATION] = {
53 [TOMOYO_TYPE_READ_WRITE] = TOMOYO_MAC_FILE_OPEN, 53 [TOMOYO_TYPE_READ_WRITE] = TOMOYO_MAC_FILE_OPEN,
54 [TOMOYO_TYPE_EXECUTE] = TOMOYO_MAC_FILE_EXECUTE, 54 [TOMOYO_TYPE_EXECUTE] = TOMOYO_MAC_FILE_EXECUTE,
55 [TOMOYO_TYPE_READ] = TOMOYO_MAC_FILE_OPEN, 55 [TOMOYO_TYPE_READ] = TOMOYO_MAC_FILE_OPEN,
56 [TOMOYO_TYPE_WRITE] = TOMOYO_MAC_FILE_OPEN, 56 [TOMOYO_TYPE_WRITE] = TOMOYO_MAC_FILE_OPEN,
57 [TOMOYO_TYPE_UNLINK] = TOMOYO_MAC_FILE_UNLINK, 57 [TOMOYO_TYPE_UNLINK] = TOMOYO_MAC_FILE_UNLINK,
58 [TOMOYO_TYPE_RMDIR] = TOMOYO_MAC_FILE_RMDIR, 58 [TOMOYO_TYPE_RMDIR] = TOMOYO_MAC_FILE_RMDIR,
59 [TOMOYO_TYPE_TRUNCATE] = TOMOYO_MAC_FILE_TRUNCATE, 59 [TOMOYO_TYPE_TRUNCATE] = TOMOYO_MAC_FILE_TRUNCATE,
60 [TOMOYO_TYPE_SYMLINK] = TOMOYO_MAC_FILE_SYMLINK, 60 [TOMOYO_TYPE_SYMLINK] = TOMOYO_MAC_FILE_SYMLINK,
61 [TOMOYO_TYPE_REWRITE] = TOMOYO_MAC_FILE_REWRITE, 61 [TOMOYO_TYPE_REWRITE] = TOMOYO_MAC_FILE_REWRITE,
62 [TOMOYO_TYPE_CHROOT] = TOMOYO_MAC_FILE_CHROOT, 62 [TOMOYO_TYPE_CHROOT] = TOMOYO_MAC_FILE_CHROOT,
63 [TOMOYO_TYPE_UMOUNT] = TOMOYO_MAC_FILE_UMOUNT, 63 [TOMOYO_TYPE_UMOUNT] = TOMOYO_MAC_FILE_UMOUNT,
64 }; 64 };
65 65
66 static const u8 tomoyo_pnnn2mac[TOMOYO_MAX_MKDEV_OPERATION] = { 66 static const u8 tomoyo_pnnn2mac[TOMOYO_MAX_MKDEV_OPERATION] = {
67 [TOMOYO_TYPE_MKBLOCK] = TOMOYO_MAC_FILE_MKBLOCK, 67 [TOMOYO_TYPE_MKBLOCK] = TOMOYO_MAC_FILE_MKBLOCK,
68 [TOMOYO_TYPE_MKCHAR] = TOMOYO_MAC_FILE_MKCHAR, 68 [TOMOYO_TYPE_MKCHAR] = TOMOYO_MAC_FILE_MKCHAR,
69 }; 69 };
70 70
71 static const u8 tomoyo_pp2mac[TOMOYO_MAX_PATH2_OPERATION] = { 71 static const u8 tomoyo_pp2mac[TOMOYO_MAX_PATH2_OPERATION] = {
72 [TOMOYO_TYPE_LINK] = TOMOYO_MAC_FILE_LINK, 72 [TOMOYO_TYPE_LINK] = TOMOYO_MAC_FILE_LINK,
73 [TOMOYO_TYPE_RENAME] = TOMOYO_MAC_FILE_RENAME, 73 [TOMOYO_TYPE_RENAME] = TOMOYO_MAC_FILE_RENAME,
74 [TOMOYO_TYPE_PIVOT_ROOT] = TOMOYO_MAC_FILE_PIVOT_ROOT, 74 [TOMOYO_TYPE_PIVOT_ROOT] = TOMOYO_MAC_FILE_PIVOT_ROOT,
75 }; 75 };
76 76
77 static const u8 tomoyo_pn2mac[TOMOYO_MAX_PATH_NUMBER_OPERATION] = { 77 static const u8 tomoyo_pn2mac[TOMOYO_MAX_PATH_NUMBER_OPERATION] = {
78 [TOMOYO_TYPE_CREATE] = TOMOYO_MAC_FILE_CREATE, 78 [TOMOYO_TYPE_CREATE] = TOMOYO_MAC_FILE_CREATE,
79 [TOMOYO_TYPE_MKDIR] = TOMOYO_MAC_FILE_MKDIR, 79 [TOMOYO_TYPE_MKDIR] = TOMOYO_MAC_FILE_MKDIR,
80 [TOMOYO_TYPE_MKFIFO] = TOMOYO_MAC_FILE_MKFIFO, 80 [TOMOYO_TYPE_MKFIFO] = TOMOYO_MAC_FILE_MKFIFO,
81 [TOMOYO_TYPE_MKSOCK] = TOMOYO_MAC_FILE_MKSOCK, 81 [TOMOYO_TYPE_MKSOCK] = TOMOYO_MAC_FILE_MKSOCK,
82 [TOMOYO_TYPE_IOCTL] = TOMOYO_MAC_FILE_IOCTL, 82 [TOMOYO_TYPE_IOCTL] = TOMOYO_MAC_FILE_IOCTL,
83 [TOMOYO_TYPE_CHMOD] = TOMOYO_MAC_FILE_CHMOD, 83 [TOMOYO_TYPE_CHMOD] = TOMOYO_MAC_FILE_CHMOD,
84 [TOMOYO_TYPE_CHOWN] = TOMOYO_MAC_FILE_CHOWN, 84 [TOMOYO_TYPE_CHOWN] = TOMOYO_MAC_FILE_CHOWN,
85 [TOMOYO_TYPE_CHGRP] = TOMOYO_MAC_FILE_CHGRP, 85 [TOMOYO_TYPE_CHGRP] = TOMOYO_MAC_FILE_CHGRP,
86 }; 86 };
87 87
88 void tomoyo_put_name_union(struct tomoyo_name_union *ptr) 88 void tomoyo_put_name_union(struct tomoyo_name_union *ptr)
89 { 89 {
90 if (!ptr) 90 if (!ptr)
91 return; 91 return;
92 if (ptr->is_group) 92 if (ptr->is_group)
93 tomoyo_put_group(ptr->group); 93 tomoyo_put_group(ptr->group);
94 else 94 else
95 tomoyo_put_name(ptr->filename); 95 tomoyo_put_name(ptr->filename);
96 } 96 }
97 97
98 const struct tomoyo_path_info * 98 const struct tomoyo_path_info *
99 tomoyo_compare_name_union(const struct tomoyo_path_info *name, 99 tomoyo_compare_name_union(const struct tomoyo_path_info *name,
100 const struct tomoyo_name_union *ptr) 100 const struct tomoyo_name_union *ptr)
101 { 101 {
102 if (ptr->is_group) 102 if (ptr->is_group)
103 return tomoyo_path_matches_group(name, ptr->group); 103 return tomoyo_path_matches_group(name, ptr->group);
104 if (tomoyo_path_matches_pattern(name, ptr->filename)) 104 if (tomoyo_path_matches_pattern(name, ptr->filename))
105 return ptr->filename; 105 return ptr->filename;
106 return NULL; 106 return NULL;
107 } 107 }
108 108
109 void tomoyo_put_number_union(struct tomoyo_number_union *ptr) 109 void tomoyo_put_number_union(struct tomoyo_number_union *ptr)
110 { 110 {
111 if (ptr && ptr->is_group) 111 if (ptr && ptr->is_group)
112 tomoyo_put_group(ptr->group); 112 tomoyo_put_group(ptr->group);
113 } 113 }
114 114
115 bool tomoyo_compare_number_union(const unsigned long value, 115 bool tomoyo_compare_number_union(const unsigned long value,
116 const struct tomoyo_number_union *ptr) 116 const struct tomoyo_number_union *ptr)
117 { 117 {
118 if (ptr->is_group) 118 if (ptr->is_group)
119 return tomoyo_number_matches_group(value, value, ptr->group); 119 return tomoyo_number_matches_group(value, value, ptr->group);
120 return value >= ptr->values[0] && value <= ptr->values[1]; 120 return value >= ptr->values[0] && value <= ptr->values[1];
121 } 121 }
122 122
123 static void tomoyo_add_slash(struct tomoyo_path_info *buf) 123 static void tomoyo_add_slash(struct tomoyo_path_info *buf)
124 { 124 {
125 if (buf->is_dir) 125 if (buf->is_dir)
126 return; 126 return;
127 /* 127 /*
128 * This is OK because tomoyo_encode() reserves space for appending "/". 128 * This is OK because tomoyo_encode() reserves space for appending "/".
129 */ 129 */
130 strcat((char *) buf->name, "/"); 130 strcat((char *) buf->name, "/");
131 tomoyo_fill_path_info(buf); 131 tomoyo_fill_path_info(buf);
132 } 132 }
133 133
134 /** 134 /**
135 * tomoyo_strendswith - Check whether the token ends with the given token. 135 * tomoyo_strendswith - Check whether the token ends with the given token.
136 * 136 *
137 * @name: The token to check. 137 * @name: The token to check.
138 * @tail: The token to find. 138 * @tail: The token to find.
139 * 139 *
140 * Returns true if @name ends with @tail, false otherwise. 140 * Returns true if @name ends with @tail, false otherwise.
141 */ 141 */
142 static bool tomoyo_strendswith(const char *name, const char *tail) 142 static bool tomoyo_strendswith(const char *name, const char *tail)
143 { 143 {
144 int len; 144 int len;
145 145
146 if (!name || !tail) 146 if (!name || !tail)
147 return false; 147 return false;
148 len = strlen(name) - strlen(tail); 148 len = strlen(name) - strlen(tail);
149 return len >= 0 && !strcmp(name + len, tail); 149 return len >= 0 && !strcmp(name + len, tail);
150 } 150 }
151 151
152 /** 152 /**
153 * tomoyo_get_realpath - Get realpath. 153 * tomoyo_get_realpath - Get realpath.
154 * 154 *
155 * @buf: Pointer to "struct tomoyo_path_info". 155 * @buf: Pointer to "struct tomoyo_path_info".
156 * @path: Pointer to "struct path". 156 * @path: Pointer to "struct path".
157 * 157 *
158 * Returns true on success, false otherwise. 158 * Returns true on success, false otherwise.
159 */ 159 */
160 static bool tomoyo_get_realpath(struct tomoyo_path_info *buf, struct path *path) 160 static bool tomoyo_get_realpath(struct tomoyo_path_info *buf, struct path *path)
161 { 161 {
162 buf->name = tomoyo_realpath_from_path(path); 162 buf->name = tomoyo_realpath_from_path(path);
163 if (buf->name) { 163 if (buf->name) {
164 tomoyo_fill_path_info(buf); 164 tomoyo_fill_path_info(buf);
165 return true; 165 return true;
166 } 166 }
167 return false; 167 return false;
168 } 168 }
169 169
170 /** 170 /**
171 * tomoyo_audit_path_log - Audit path request log. 171 * tomoyo_audit_path_log - Audit path request log.
172 * 172 *
173 * @r: Pointer to "struct tomoyo_request_info". 173 * @r: Pointer to "struct tomoyo_request_info".
174 * 174 *
175 * Returns 0 on success, negative value otherwise. 175 * Returns 0 on success, negative value otherwise.
176 */ 176 */
177 static int tomoyo_audit_path_log(struct tomoyo_request_info *r) 177 static int tomoyo_audit_path_log(struct tomoyo_request_info *r)
178 { 178 {
179 const char *operation = tomoyo_path_keyword[r->param.path.operation]; 179 const char *operation = tomoyo_path_keyword[r->param.path.operation];
180 const struct tomoyo_path_info *filename = r->param.path.filename; 180 const struct tomoyo_path_info *filename = r->param.path.filename;
181 if (r->granted) 181 if (r->granted)
182 return 0; 182 return 0;
183 tomoyo_warn_log(r, "%s %s", operation, filename->name); 183 tomoyo_warn_log(r, "%s %s", operation, filename->name);
184 return tomoyo_supervisor(r, "allow_%s %s\n", operation, 184 return tomoyo_supervisor(r, "allow_%s %s\n", operation,
185 tomoyo_pattern(filename)); 185 tomoyo_pattern(filename));
186 } 186 }
187 187
188 /** 188 /**
189 * tomoyo_audit_path2_log - Audit path/path request log. 189 * tomoyo_audit_path2_log - Audit path/path request log.
190 * 190 *
191 * @r: Pointer to "struct tomoyo_request_info". 191 * @r: Pointer to "struct tomoyo_request_info".
192 * 192 *
193 * Returns 0 on success, negative value otherwise. 193 * Returns 0 on success, negative value otherwise.
194 */ 194 */
195 static int tomoyo_audit_path2_log(struct tomoyo_request_info *r) 195 static int tomoyo_audit_path2_log(struct tomoyo_request_info *r)
196 { 196 {
197 const char *operation = tomoyo_path2_keyword[r->param.path2.operation]; 197 const char *operation = tomoyo_path2_keyword[r->param.path2.operation];
198 const struct tomoyo_path_info *filename1 = r->param.path2.filename1; 198 const struct tomoyo_path_info *filename1 = r->param.path2.filename1;
199 const struct tomoyo_path_info *filename2 = r->param.path2.filename2; 199 const struct tomoyo_path_info *filename2 = r->param.path2.filename2;
200 if (r->granted) 200 if (r->granted)
201 return 0; 201 return 0;
202 tomoyo_warn_log(r, "%s %s %s", operation, filename1->name, 202 tomoyo_warn_log(r, "%s %s %s", operation, filename1->name,
203 filename2->name); 203 filename2->name);
204 return tomoyo_supervisor(r, "allow_%s %s %s\n", operation, 204 return tomoyo_supervisor(r, "allow_%s %s %s\n", operation,
205 tomoyo_pattern(filename1), 205 tomoyo_pattern(filename1),
206 tomoyo_pattern(filename2)); 206 tomoyo_pattern(filename2));
207 } 207 }
208 208
209 /** 209 /**
210 * tomoyo_audit_mkdev_log - Audit path/number/number/number request log. 210 * tomoyo_audit_mkdev_log - Audit path/number/number/number request log.
211 * 211 *
212 * @r: Pointer to "struct tomoyo_request_info". 212 * @r: Pointer to "struct tomoyo_request_info".
213 * 213 *
214 * Returns 0 on success, negative value otherwise. 214 * Returns 0 on success, negative value otherwise.
215 */ 215 */
216 static int tomoyo_audit_mkdev_log(struct tomoyo_request_info *r) 216 static int tomoyo_audit_mkdev_log(struct tomoyo_request_info *r)
217 { 217 {
218 const char *operation = tomoyo_mkdev_keyword[r->param.mkdev.operation]; 218 const char *operation = tomoyo_mkdev_keyword[r->param.mkdev.operation];
219 const struct tomoyo_path_info *filename = r->param.mkdev.filename; 219 const struct tomoyo_path_info *filename = r->param.mkdev.filename;
220 const unsigned int major = r->param.mkdev.major; 220 const unsigned int major = r->param.mkdev.major;
221 const unsigned int minor = r->param.mkdev.minor; 221 const unsigned int minor = r->param.mkdev.minor;
222 const unsigned int mode = r->param.mkdev.mode; 222 const unsigned int mode = r->param.mkdev.mode;
223 if (r->granted) 223 if (r->granted)
224 return 0; 224 return 0;
225 tomoyo_warn_log(r, "%s %s 0%o %u %u", operation, filename->name, mode, 225 tomoyo_warn_log(r, "%s %s 0%o %u %u", operation, filename->name, mode,
226 major, minor); 226 major, minor);
227 return tomoyo_supervisor(r, "allow_%s %s 0%o %u %u\n", operation, 227 return tomoyo_supervisor(r, "allow_%s %s 0%o %u %u\n", operation,
228 tomoyo_pattern(filename), mode, major, minor); 228 tomoyo_pattern(filename), mode, major, minor);
229 } 229 }
230 230
231 /** 231 /**
232 * tomoyo_audit_path_number_log - Audit path/number request log. 232 * tomoyo_audit_path_number_log - Audit path/number request log.
233 * 233 *
234 * @r: Pointer to "struct tomoyo_request_info". 234 * @r: Pointer to "struct tomoyo_request_info".
235 * @error: Error code. 235 * @error: Error code.
236 * 236 *
237 * Returns 0 on success, negative value otherwise. 237 * Returns 0 on success, negative value otherwise.
238 */ 238 */
239 static int tomoyo_audit_path_number_log(struct tomoyo_request_info *r) 239 static int tomoyo_audit_path_number_log(struct tomoyo_request_info *r)
240 { 240 {
241 const u8 type = r->param.path_number.operation; 241 const u8 type = r->param.path_number.operation;
242 u8 radix; 242 u8 radix;
243 const struct tomoyo_path_info *filename = r->param.path_number.filename; 243 const struct tomoyo_path_info *filename = r->param.path_number.filename;
244 const char *operation = tomoyo_path_number_keyword[type]; 244 const char *operation = tomoyo_path_number_keyword[type];
245 char buffer[64]; 245 char buffer[64];
246 if (r->granted) 246 if (r->granted)
247 return 0; 247 return 0;
248 switch (type) { 248 switch (type) {
249 case TOMOYO_TYPE_CREATE: 249 case TOMOYO_TYPE_CREATE:
250 case TOMOYO_TYPE_MKDIR: 250 case TOMOYO_TYPE_MKDIR:
251 case TOMOYO_TYPE_MKFIFO: 251 case TOMOYO_TYPE_MKFIFO:
252 case TOMOYO_TYPE_MKSOCK: 252 case TOMOYO_TYPE_MKSOCK:
253 case TOMOYO_TYPE_CHMOD: 253 case TOMOYO_TYPE_CHMOD:
254 radix = TOMOYO_VALUE_TYPE_OCTAL; 254 radix = TOMOYO_VALUE_TYPE_OCTAL;
255 break; 255 break;
256 case TOMOYO_TYPE_IOCTL: 256 case TOMOYO_TYPE_IOCTL:
257 radix = TOMOYO_VALUE_TYPE_HEXADECIMAL; 257 radix = TOMOYO_VALUE_TYPE_HEXADECIMAL;
258 break; 258 break;
259 default: 259 default:
260 radix = TOMOYO_VALUE_TYPE_DECIMAL; 260 radix = TOMOYO_VALUE_TYPE_DECIMAL;
261 break; 261 break;
262 } 262 }
263 tomoyo_print_ulong(buffer, sizeof(buffer), r->param.path_number.number, 263 tomoyo_print_ulong(buffer, sizeof(buffer), r->param.path_number.number,
264 radix); 264 radix);
265 tomoyo_warn_log(r, "%s %s %s", operation, filename->name, buffer); 265 tomoyo_warn_log(r, "%s %s %s", operation, filename->name, buffer);
266 return tomoyo_supervisor(r, "allow_%s %s %s\n", operation, 266 return tomoyo_supervisor(r, "allow_%s %s %s\n", operation,
267 tomoyo_pattern(filename), buffer); 267 tomoyo_pattern(filename), buffer);
268 } 268 }
269 269
270 static bool tomoyo_same_globally_readable(const struct tomoyo_acl_head *a, 270 static bool tomoyo_same_globally_readable(const struct tomoyo_acl_head *a,
271 const struct tomoyo_acl_head *b) 271 const struct tomoyo_acl_head *b)
272 { 272 {
273 return container_of(a, struct tomoyo_readable_file, 273 return container_of(a, struct tomoyo_readable_file,
274 head)->filename == 274 head)->filename ==
275 container_of(b, struct tomoyo_readable_file, 275 container_of(b, struct tomoyo_readable_file,
276 head)->filename; 276 head)->filename;
277 } 277 }
278 278
279 /** 279 /**
280 * tomoyo_update_globally_readable_entry - Update "struct tomoyo_readable_file" list. 280 * tomoyo_update_globally_readable_entry - Update "struct tomoyo_readable_file" list.
281 * 281 *
282 * @filename: Filename unconditionally permitted to open() for reading. 282 * @filename: Filename unconditionally permitted to open() for reading.
283 * @is_delete: True if it is a delete request. 283 * @is_delete: True if it is a delete request.
284 * 284 *
285 * Returns 0 on success, negative value otherwise. 285 * Returns 0 on success, negative value otherwise.
286 * 286 *
287 * Caller holds tomoyo_read_lock(). 287 * Caller holds tomoyo_read_lock().
288 */ 288 */
289 static int tomoyo_update_globally_readable_entry(const char *filename, 289 static int tomoyo_update_globally_readable_entry(const char *filename,
290 const bool is_delete) 290 const bool is_delete)
291 { 291 {
292 struct tomoyo_readable_file e = { }; 292 struct tomoyo_readable_file e = { };
293 int error; 293 int error;
294 294
295 if (!tomoyo_correct_word(filename)) 295 if (!tomoyo_correct_word(filename))
296 return -EINVAL; 296 return -EINVAL;
297 e.filename = tomoyo_get_name(filename); 297 e.filename = tomoyo_get_name(filename);
298 if (!e.filename) 298 if (!e.filename)
299 return -ENOMEM; 299 return -ENOMEM;
300 error = tomoyo_update_policy(&e.head, sizeof(e), is_delete, 300 error = tomoyo_update_policy(&e.head, sizeof(e), is_delete,
301 &tomoyo_policy_list 301 &tomoyo_policy_list
302 [TOMOYO_ID_GLOBALLY_READABLE], 302 [TOMOYO_ID_GLOBALLY_READABLE],
303 tomoyo_same_globally_readable); 303 tomoyo_same_globally_readable);
304 tomoyo_put_name(e.filename); 304 tomoyo_put_name(e.filename);
305 return error; 305 return error;
306 } 306 }
307 307
308 /** 308 /**
309 * tomoyo_globally_readable_file - Check if the file is unconditionnaly permitted to be open()ed for reading. 309 * tomoyo_globally_readable_file - Check if the file is unconditionnaly permitted to be open()ed for reading.
310 * 310 *
311 * @filename: The filename to check. 311 * @filename: The filename to check.
312 * 312 *
313 * Returns true if any domain can open @filename for reading, false otherwise. 313 * Returns true if any domain can open @filename for reading, false otherwise.
314 * 314 *
315 * Caller holds tomoyo_read_lock(). 315 * Caller holds tomoyo_read_lock().
316 */ 316 */
317 static bool tomoyo_globally_readable_file(const struct tomoyo_path_info * 317 static bool tomoyo_globally_readable_file(const struct tomoyo_path_info *
318 filename) 318 filename)
319 { 319 {
320 struct tomoyo_readable_file *ptr; 320 struct tomoyo_readable_file *ptr;
321 bool found = false; 321 bool found = false;
322 322
323 list_for_each_entry_rcu(ptr, &tomoyo_policy_list 323 list_for_each_entry_rcu(ptr, &tomoyo_policy_list
324 [TOMOYO_ID_GLOBALLY_READABLE], head.list) { 324 [TOMOYO_ID_GLOBALLY_READABLE], head.list) {
325 if (!ptr->head.is_deleted && 325 if (!ptr->head.is_deleted &&
326 tomoyo_path_matches_pattern(filename, ptr->filename)) { 326 tomoyo_path_matches_pattern(filename, ptr->filename)) {
327 found = true; 327 found = true;
328 break; 328 break;
329 } 329 }
330 } 330 }
331 return found; 331 return found;
332 } 332 }
333 333
334 /** 334 /**
335 * tomoyo_write_globally_readable - Write "struct tomoyo_readable_file" list. 335 * tomoyo_write_globally_readable - Write "struct tomoyo_readable_file" list.
336 * 336 *
337 * @data: String to parse. 337 * @data: String to parse.
338 * @is_delete: True if it is a delete request. 338 * @is_delete: True if it is a delete request.
339 * 339 *
340 * Returns 0 on success, negative value otherwise. 340 * Returns 0 on success, negative value otherwise.
341 * 341 *
342 * Caller holds tomoyo_read_lock(). 342 * Caller holds tomoyo_read_lock().
343 */ 343 */
344 int tomoyo_write_globally_readable(char *data, const bool is_delete) 344 int tomoyo_write_globally_readable(char *data, const bool is_delete)
345 { 345 {
346 return tomoyo_update_globally_readable_entry(data, is_delete); 346 return tomoyo_update_globally_readable_entry(data, is_delete);
347 } 347 }
348 348
349 static bool tomoyo_same_pattern(const struct tomoyo_acl_head *a, 349 static bool tomoyo_same_pattern(const struct tomoyo_acl_head *a,
350 const struct tomoyo_acl_head *b) 350 const struct tomoyo_acl_head *b)
351 { 351 {
352 return container_of(a, struct tomoyo_no_pattern, head)->pattern == 352 return container_of(a, struct tomoyo_no_pattern, head)->pattern ==
353 container_of(b, struct tomoyo_no_pattern, head)->pattern; 353 container_of(b, struct tomoyo_no_pattern, head)->pattern;
354 } 354 }
355 355
356 /** 356 /**
357 * tomoyo_update_file_pattern_entry - Update "struct tomoyo_no_pattern" list. 357 * tomoyo_update_file_pattern_entry - Update "struct tomoyo_no_pattern" list.
358 * 358 *
359 * @pattern: Pathname pattern. 359 * @pattern: Pathname pattern.
360 * @is_delete: True if it is a delete request. 360 * @is_delete: True if it is a delete request.
361 * 361 *
362 * Returns 0 on success, negative value otherwise. 362 * Returns 0 on success, negative value otherwise.
363 * 363 *
364 * Caller holds tomoyo_read_lock(). 364 * Caller holds tomoyo_read_lock().
365 */ 365 */
366 static int tomoyo_update_file_pattern_entry(const char *pattern, 366 static int tomoyo_update_file_pattern_entry(const char *pattern,
367 const bool is_delete) 367 const bool is_delete)
368 { 368 {
369 struct tomoyo_no_pattern e = { }; 369 struct tomoyo_no_pattern e = { };
370 int error; 370 int error;
371 371
372 if (!tomoyo_correct_word(pattern)) 372 if (!tomoyo_correct_word(pattern))
373 return -EINVAL; 373 return -EINVAL;
374 e.pattern = tomoyo_get_name(pattern); 374 e.pattern = tomoyo_get_name(pattern);
375 if (!e.pattern) 375 if (!e.pattern)
376 return -ENOMEM; 376 return -ENOMEM;
377 error = tomoyo_update_policy(&e.head, sizeof(e), is_delete, 377 error = tomoyo_update_policy(&e.head, sizeof(e), is_delete,
378 &tomoyo_policy_list[TOMOYO_ID_PATTERN], 378 &tomoyo_policy_list[TOMOYO_ID_PATTERN],
379 tomoyo_same_pattern); 379 tomoyo_same_pattern);
380 tomoyo_put_name(e.pattern); 380 tomoyo_put_name(e.pattern);
381 return error; 381 return error;
382 } 382 }
383 383
384 /** 384 /**
385 * tomoyo_pattern - Get patterned pathname. 385 * tomoyo_pattern - Get patterned pathname.
386 * 386 *
387 * @filename: The filename to find patterned pathname. 387 * @filename: The filename to find patterned pathname.
388 * 388 *
389 * Returns pointer to pathname pattern if matched, @filename otherwise. 389 * Returns pointer to pathname pattern if matched, @filename otherwise.
390 * 390 *
391 * Caller holds tomoyo_read_lock(). 391 * Caller holds tomoyo_read_lock().
392 */ 392 */
393 const char *tomoyo_pattern(const struct tomoyo_path_info *filename) 393 const char *tomoyo_pattern(const struct tomoyo_path_info *filename)
394 { 394 {
395 struct tomoyo_no_pattern *ptr; 395 struct tomoyo_no_pattern *ptr;
396 const struct tomoyo_path_info *pattern = NULL; 396 const struct tomoyo_path_info *pattern = NULL;
397 397
398 list_for_each_entry_rcu(ptr, &tomoyo_policy_list[TOMOYO_ID_PATTERN], 398 list_for_each_entry_rcu(ptr, &tomoyo_policy_list[TOMOYO_ID_PATTERN],
399 head.list) { 399 head.list) {
400 if (ptr->head.is_deleted) 400 if (ptr->head.is_deleted)
401 continue; 401 continue;
402 if (!tomoyo_path_matches_pattern(filename, ptr->pattern)) 402 if (!tomoyo_path_matches_pattern(filename, ptr->pattern))
403 continue; 403 continue;
404 pattern = ptr->pattern; 404 pattern = ptr->pattern;
405 if (tomoyo_strendswith(pattern->name, "/\\*")) { 405 if (tomoyo_strendswith(pattern->name, "/\\*")) {
406 /* Do nothing. Try to find the better match. */ 406 /* Do nothing. Try to find the better match. */
407 } else { 407 } else {
408 /* This would be the better match. Use this. */ 408 /* This would be the better match. Use this. */
409 break; 409 break;
410 } 410 }
411 } 411 }
412 if (pattern) 412 if (pattern)
413 filename = pattern; 413 filename = pattern;
414 return filename->name; 414 return filename->name;
415 } 415 }
416 416
417 /** 417 /**
418 * tomoyo_write_pattern - Write "struct tomoyo_no_pattern" list. 418 * tomoyo_write_pattern - Write "struct tomoyo_no_pattern" list.
419 * 419 *
420 * @data: String to parse. 420 * @data: String to parse.
421 * @is_delete: True if it is a delete request. 421 * @is_delete: True if it is a delete request.
422 * 422 *
423 * Returns 0 on success, negative value otherwise. 423 * Returns 0 on success, negative value otherwise.
424 * 424 *
425 * Caller holds tomoyo_read_lock(). 425 * Caller holds tomoyo_read_lock().
426 */ 426 */
427 int tomoyo_write_pattern(char *data, const bool is_delete) 427 int tomoyo_write_pattern(char *data, const bool is_delete)
428 { 428 {
429 return tomoyo_update_file_pattern_entry(data, is_delete); 429 return tomoyo_update_file_pattern_entry(data, is_delete);
430 } 430 }
431 431
432 static bool tomoyo_same_no_rewrite(const struct tomoyo_acl_head *a, 432 static bool tomoyo_same_no_rewrite(const struct tomoyo_acl_head *a,
433 const struct tomoyo_acl_head *b) 433 const struct tomoyo_acl_head *b)
434 { 434 {
435 return container_of(a, struct tomoyo_no_rewrite, head)->pattern 435 return container_of(a, struct tomoyo_no_rewrite, head)->pattern
436 == container_of(b, struct tomoyo_no_rewrite, head) 436 == container_of(b, struct tomoyo_no_rewrite, head)
437 ->pattern; 437 ->pattern;
438 } 438 }
439 439
440 /** 440 /**
441 * tomoyo_update_no_rewrite_entry - Update "struct tomoyo_no_rewrite" list. 441 * tomoyo_update_no_rewrite_entry - Update "struct tomoyo_no_rewrite" list.
442 * 442 *
443 * @pattern: Pathname pattern that are not rewritable by default. 443 * @pattern: Pathname pattern that are not rewritable by default.
444 * @is_delete: True if it is a delete request. 444 * @is_delete: True if it is a delete request.
445 * 445 *
446 * Returns 0 on success, negative value otherwise. 446 * Returns 0 on success, negative value otherwise.
447 * 447 *
448 * Caller holds tomoyo_read_lock(). 448 * Caller holds tomoyo_read_lock().
449 */ 449 */
450 static int tomoyo_update_no_rewrite_entry(const char *pattern, 450 static int tomoyo_update_no_rewrite_entry(const char *pattern,
451 const bool is_delete) 451 const bool is_delete)
452 { 452 {
453 struct tomoyo_no_rewrite e = { }; 453 struct tomoyo_no_rewrite e = { };
454 int error; 454 int error;
455 455
456 if (!tomoyo_correct_word(pattern)) 456 if (!tomoyo_correct_word(pattern))
457 return -EINVAL; 457 return -EINVAL;
458 e.pattern = tomoyo_get_name(pattern); 458 e.pattern = tomoyo_get_name(pattern);
459 if (!e.pattern) 459 if (!e.pattern)
460 return -ENOMEM; 460 return -ENOMEM;
461 error = tomoyo_update_policy(&e.head, sizeof(e), is_delete, 461 error = tomoyo_update_policy(&e.head, sizeof(e), is_delete,
462 &tomoyo_policy_list[TOMOYO_ID_NO_REWRITE], 462 &tomoyo_policy_list[TOMOYO_ID_NO_REWRITE],
463 tomoyo_same_no_rewrite); 463 tomoyo_same_no_rewrite);
464 tomoyo_put_name(e.pattern); 464 tomoyo_put_name(e.pattern);
465 return error; 465 return error;
466 } 466 }
467 467
468 /** 468 /**
469 * tomoyo_no_rewrite_file - Check if the given pathname is not permitted to be rewrited. 469 * tomoyo_no_rewrite_file - Check if the given pathname is not permitted to be rewrited.
470 * 470 *
471 * @filename: Filename to check. 471 * @filename: Filename to check.
472 * 472 *
473 * Returns true if @filename is specified by "deny_rewrite" directive, 473 * Returns true if @filename is specified by "deny_rewrite" directive,
474 * false otherwise. 474 * false otherwise.
475 * 475 *
476 * Caller holds tomoyo_read_lock(). 476 * Caller holds tomoyo_read_lock().
477 */ 477 */
478 static bool tomoyo_no_rewrite_file(const struct tomoyo_path_info *filename) 478 static bool tomoyo_no_rewrite_file(const struct tomoyo_path_info *filename)
479 { 479 {
480 struct tomoyo_no_rewrite *ptr; 480 struct tomoyo_no_rewrite *ptr;
481 bool found = false; 481 bool found = false;
482 482
483 list_for_each_entry_rcu(ptr, &tomoyo_policy_list[TOMOYO_ID_NO_REWRITE], 483 list_for_each_entry_rcu(ptr, &tomoyo_policy_list[TOMOYO_ID_NO_REWRITE],
484 head.list) { 484 head.list) {
485 if (ptr->head.is_deleted) 485 if (ptr->head.is_deleted)
486 continue; 486 continue;
487 if (!tomoyo_path_matches_pattern(filename, ptr->pattern)) 487 if (!tomoyo_path_matches_pattern(filename, ptr->pattern))
488 continue; 488 continue;
489 found = true; 489 found = true;
490 break; 490 break;
491 } 491 }
492 return found; 492 return found;
493 } 493 }
494 494
495 /** 495 /**
496 * tomoyo_write_no_rewrite - Write "struct tomoyo_no_rewrite" list. 496 * tomoyo_write_no_rewrite - Write "struct tomoyo_no_rewrite" list.
497 * 497 *
498 * @data: String to parse. 498 * @data: String to parse.
499 * @is_delete: True if it is a delete request. 499 * @is_delete: True if it is a delete request.
500 * 500 *
501 * Returns 0 on success, negative value otherwise. 501 * Returns 0 on success, negative value otherwise.
502 * 502 *
503 * Caller holds tomoyo_read_lock(). 503 * Caller holds tomoyo_read_lock().
504 */ 504 */
505 int tomoyo_write_no_rewrite(char *data, const bool is_delete) 505 int tomoyo_write_no_rewrite(char *data, const bool is_delete)
506 { 506 {
507 return tomoyo_update_no_rewrite_entry(data, is_delete); 507 return tomoyo_update_no_rewrite_entry(data, is_delete);
508 } 508 }
509 509
510 static bool tomoyo_check_path_acl(struct tomoyo_request_info *r, 510 static bool tomoyo_check_path_acl(struct tomoyo_request_info *r,
511 const struct tomoyo_acl_info *ptr) 511 const struct tomoyo_acl_info *ptr)
512 { 512 {
513 const struct tomoyo_path_acl *acl = container_of(ptr, typeof(*acl), 513 const struct tomoyo_path_acl *acl = container_of(ptr, typeof(*acl),
514 head); 514 head);
515 if (acl->perm & (1 << r->param.path.operation)) { 515 if (acl->perm & (1 << r->param.path.operation)) {
516 r->param.path.matched_path = 516 r->param.path.matched_path =
517 tomoyo_compare_name_union(r->param.path.filename, 517 tomoyo_compare_name_union(r->param.path.filename,
518 &acl->name); 518 &acl->name);
519 return r->param.path.matched_path != NULL; 519 return r->param.path.matched_path != NULL;
520 } 520 }
521 return false; 521 return false;
522 } 522 }
523 523
524 static bool tomoyo_check_path_number_acl(struct tomoyo_request_info *r, 524 static bool tomoyo_check_path_number_acl(struct tomoyo_request_info *r,
525 const struct tomoyo_acl_info *ptr) 525 const struct tomoyo_acl_info *ptr)
526 { 526 {
527 const struct tomoyo_path_number_acl *acl = 527 const struct tomoyo_path_number_acl *acl =
528 container_of(ptr, typeof(*acl), head); 528 container_of(ptr, typeof(*acl), head);
529 return (acl->perm & (1 << r->param.path_number.operation)) && 529 return (acl->perm & (1 << r->param.path_number.operation)) &&
530 tomoyo_compare_number_union(r->param.path_number.number, 530 tomoyo_compare_number_union(r->param.path_number.number,
531 &acl->number) && 531 &acl->number) &&
532 tomoyo_compare_name_union(r->param.path_number.filename, 532 tomoyo_compare_name_union(r->param.path_number.filename,
533 &acl->name); 533 &acl->name);
534 } 534 }
535 535
536 static bool tomoyo_check_path2_acl(struct tomoyo_request_info *r, 536 static bool tomoyo_check_path2_acl(struct tomoyo_request_info *r,
537 const struct tomoyo_acl_info *ptr) 537 const struct tomoyo_acl_info *ptr)
538 { 538 {
539 const struct tomoyo_path2_acl *acl = 539 const struct tomoyo_path2_acl *acl =
540 container_of(ptr, typeof(*acl), head); 540 container_of(ptr, typeof(*acl), head);
541 return (acl->perm & (1 << r->param.path2.operation)) && 541 return (acl->perm & (1 << r->param.path2.operation)) &&
542 tomoyo_compare_name_union(r->param.path2.filename1, &acl->name1) 542 tomoyo_compare_name_union(r->param.path2.filename1, &acl->name1)
543 && tomoyo_compare_name_union(r->param.path2.filename2, 543 && tomoyo_compare_name_union(r->param.path2.filename2,
544 &acl->name2); 544 &acl->name2);
545 } 545 }
546 546
547 static bool tomoyo_check_mkdev_acl(struct tomoyo_request_info *r, 547 static bool tomoyo_check_mkdev_acl(struct tomoyo_request_info *r,
548 const struct tomoyo_acl_info *ptr) 548 const struct tomoyo_acl_info *ptr)
549 { 549 {
550 const struct tomoyo_mkdev_acl *acl = 550 const struct tomoyo_mkdev_acl *acl =
551 container_of(ptr, typeof(*acl), head); 551 container_of(ptr, typeof(*acl), head);
552 return (acl->perm & (1 << r->param.mkdev.operation)) && 552 return (acl->perm & (1 << r->param.mkdev.operation)) &&
553 tomoyo_compare_number_union(r->param.mkdev.mode, 553 tomoyo_compare_number_union(r->param.mkdev.mode,
554 &acl->mode) && 554 &acl->mode) &&
555 tomoyo_compare_number_union(r->param.mkdev.major, 555 tomoyo_compare_number_union(r->param.mkdev.major,
556 &acl->major) && 556 &acl->major) &&
557 tomoyo_compare_number_union(r->param.mkdev.minor, 557 tomoyo_compare_number_union(r->param.mkdev.minor,
558 &acl->minor) && 558 &acl->minor) &&
559 tomoyo_compare_name_union(r->param.mkdev.filename, 559 tomoyo_compare_name_union(r->param.mkdev.filename,
560 &acl->name); 560 &acl->name);
561 } 561 }
562 562
563 static bool tomoyo_same_path_acl(const struct tomoyo_acl_info *a, 563 static bool tomoyo_same_path_acl(const struct tomoyo_acl_info *a,
564 const struct tomoyo_acl_info *b) 564 const struct tomoyo_acl_info *b)
565 { 565 {
566 const struct tomoyo_path_acl *p1 = container_of(a, typeof(*p1), head); 566 const struct tomoyo_path_acl *p1 = container_of(a, typeof(*p1), head);
567 const struct tomoyo_path_acl *p2 = container_of(b, typeof(*p2), head); 567 const struct tomoyo_path_acl *p2 = container_of(b, typeof(*p2), head);
568 return tomoyo_same_acl_head(&p1->head, &p2->head) && 568 return tomoyo_same_acl_head(&p1->head, &p2->head) &&
569 tomoyo_same_name_union(&p1->name, &p2->name); 569 tomoyo_same_name_union(&p1->name, &p2->name);
570 } 570 }
571 571
572 static bool tomoyo_merge_path_acl(struct tomoyo_acl_info *a, 572 static bool tomoyo_merge_path_acl(struct tomoyo_acl_info *a,
573 struct tomoyo_acl_info *b, 573 struct tomoyo_acl_info *b,
574 const bool is_delete) 574 const bool is_delete)
575 { 575 {
576 u16 * const a_perm = &container_of(a, struct tomoyo_path_acl, head) 576 u16 * const a_perm = &container_of(a, struct tomoyo_path_acl, head)
577 ->perm; 577 ->perm;
578 u16 perm = *a_perm; 578 u16 perm = *a_perm;
579 const u16 b_perm = container_of(b, struct tomoyo_path_acl, head)->perm; 579 const u16 b_perm = container_of(b, struct tomoyo_path_acl, head)->perm;
580 if (is_delete) { 580 if (is_delete) {
581 perm &= ~b_perm; 581 perm &= ~b_perm;
582 if ((perm & TOMOYO_RW_MASK) != TOMOYO_RW_MASK) 582 if ((perm & TOMOYO_RW_MASK) != TOMOYO_RW_MASK)
583 perm &= ~(1 << TOMOYO_TYPE_READ_WRITE); 583 perm &= ~(1 << TOMOYO_TYPE_READ_WRITE);
584 else if (!(perm & (1 << TOMOYO_TYPE_READ_WRITE))) 584 else if (!(perm & (1 << TOMOYO_TYPE_READ_WRITE)))
585 perm &= ~TOMOYO_RW_MASK; 585 perm &= ~TOMOYO_RW_MASK;
586 } else { 586 } else {
587 perm |= b_perm; 587 perm |= b_perm;
588 if ((perm & TOMOYO_RW_MASK) == TOMOYO_RW_MASK) 588 if ((perm & TOMOYO_RW_MASK) == TOMOYO_RW_MASK)
589 perm |= (1 << TOMOYO_TYPE_READ_WRITE); 589 perm |= (1 << TOMOYO_TYPE_READ_WRITE);
590 else if (perm & (1 << TOMOYO_TYPE_READ_WRITE)) 590 else if (perm & (1 << TOMOYO_TYPE_READ_WRITE))
591 perm |= TOMOYO_RW_MASK; 591 perm |= TOMOYO_RW_MASK;
592 } 592 }
593 *a_perm = perm; 593 *a_perm = perm;
594 return !perm; 594 return !perm;
595 } 595 }
596 596
597 /** 597 /**
598 * tomoyo_update_path_acl - Update "struct tomoyo_path_acl" list. 598 * tomoyo_update_path_acl - Update "struct tomoyo_path_acl" list.
599 * 599 *
600 * @type: Type of operation. 600 * @type: Type of operation.
601 * @filename: Filename. 601 * @filename: Filename.
602 * @domain: Pointer to "struct tomoyo_domain_info". 602 * @domain: Pointer to "struct tomoyo_domain_info".
603 * @is_delete: True if it is a delete request. 603 * @is_delete: True if it is a delete request.
604 * 604 *
605 * Returns 0 on success, negative value otherwise. 605 * Returns 0 on success, negative value otherwise.
606 * 606 *
607 * Caller holds tomoyo_read_lock(). 607 * Caller holds tomoyo_read_lock().
608 */ 608 */
609 static int tomoyo_update_path_acl(const u8 type, const char *filename, 609 static int tomoyo_update_path_acl(const u8 type, const char *filename,
610 struct tomoyo_domain_info * const domain, 610 struct tomoyo_domain_info * const domain,
611 const bool is_delete) 611 const bool is_delete)
612 { 612 {
613 struct tomoyo_path_acl e = { 613 struct tomoyo_path_acl e = {
614 .head.type = TOMOYO_TYPE_PATH_ACL, 614 .head.type = TOMOYO_TYPE_PATH_ACL,
615 .perm = 1 << type 615 .perm = 1 << type
616 }; 616 };
617 int error; 617 int error;
618 if (e.perm == (1 << TOMOYO_TYPE_READ_WRITE)) 618 if (e.perm == (1 << TOMOYO_TYPE_READ_WRITE))
619 e.perm |= TOMOYO_RW_MASK; 619 e.perm |= TOMOYO_RW_MASK;
620 if (!tomoyo_parse_name_union(filename, &e.name)) 620 if (!tomoyo_parse_name_union(filename, &e.name))
621 return -EINVAL; 621 return -EINVAL;
622 error = tomoyo_update_domain(&e.head, sizeof(e), is_delete, domain, 622 error = tomoyo_update_domain(&e.head, sizeof(e), is_delete, domain,
623 tomoyo_same_path_acl, 623 tomoyo_same_path_acl,
624 tomoyo_merge_path_acl); 624 tomoyo_merge_path_acl);
625 tomoyo_put_name_union(&e.name); 625 tomoyo_put_name_union(&e.name);
626 return error; 626 return error;
627 } 627 }
628 628
629 static bool tomoyo_same_mkdev_acl(const struct tomoyo_acl_info *a, 629 static bool tomoyo_same_mkdev_acl(const struct tomoyo_acl_info *a,
630 const struct tomoyo_acl_info *b) 630 const struct tomoyo_acl_info *b)
631 { 631 {
632 const struct tomoyo_mkdev_acl *p1 = container_of(a, typeof(*p1), 632 const struct tomoyo_mkdev_acl *p1 = container_of(a, typeof(*p1),
633 head); 633 head);
634 const struct tomoyo_mkdev_acl *p2 = container_of(b, typeof(*p2), 634 const struct tomoyo_mkdev_acl *p2 = container_of(b, typeof(*p2),
635 head); 635 head);
636 return tomoyo_same_acl_head(&p1->head, &p2->head) 636 return tomoyo_same_acl_head(&p1->head, &p2->head)
637 && tomoyo_same_name_union(&p1->name, &p2->name) 637 && tomoyo_same_name_union(&p1->name, &p2->name)
638 && tomoyo_same_number_union(&p1->mode, &p2->mode) 638 && tomoyo_same_number_union(&p1->mode, &p2->mode)
639 && tomoyo_same_number_union(&p1->major, &p2->major) 639 && tomoyo_same_number_union(&p1->major, &p2->major)
640 && tomoyo_same_number_union(&p1->minor, &p2->minor); 640 && tomoyo_same_number_union(&p1->minor, &p2->minor);
641 } 641 }
642 642
643 static bool tomoyo_merge_mkdev_acl(struct tomoyo_acl_info *a, 643 static bool tomoyo_merge_mkdev_acl(struct tomoyo_acl_info *a,
644 struct tomoyo_acl_info *b, 644 struct tomoyo_acl_info *b,
645 const bool is_delete) 645 const bool is_delete)
646 { 646 {
647 u8 *const a_perm = &container_of(a, struct tomoyo_mkdev_acl, 647 u8 *const a_perm = &container_of(a, struct tomoyo_mkdev_acl,
648 head)->perm; 648 head)->perm;
649 u8 perm = *a_perm; 649 u8 perm = *a_perm;
650 const u8 b_perm = container_of(b, struct tomoyo_mkdev_acl, head) 650 const u8 b_perm = container_of(b, struct tomoyo_mkdev_acl, head)
651 ->perm; 651 ->perm;
652 if (is_delete) 652 if (is_delete)
653 perm &= ~b_perm; 653 perm &= ~b_perm;
654 else 654 else
655 perm |= b_perm; 655 perm |= b_perm;
656 *a_perm = perm; 656 *a_perm = perm;
657 return !perm; 657 return !perm;
658 } 658 }
659 659
660 /** 660 /**
661 * tomoyo_update_mkdev_acl - Update "struct tomoyo_mkdev_acl" list. 661 * tomoyo_update_mkdev_acl - Update "struct tomoyo_mkdev_acl" list.
662 * 662 *
663 * @type: Type of operation. 663 * @type: Type of operation.
664 * @filename: Filename. 664 * @filename: Filename.
665 * @mode: Create mode. 665 * @mode: Create mode.
666 * @major: Device major number. 666 * @major: Device major number.
667 * @minor: Device minor number. 667 * @minor: Device minor number.
668 * @domain: Pointer to "struct tomoyo_domain_info". 668 * @domain: Pointer to "struct tomoyo_domain_info".
669 * @is_delete: True if it is a delete request. 669 * @is_delete: True if it is a delete request.
670 * 670 *
671 * Returns 0 on success, negative value otherwise. 671 * Returns 0 on success, negative value otherwise.
672 * 672 *
673 * Caller holds tomoyo_read_lock(). 673 * Caller holds tomoyo_read_lock().
674 */ 674 */
675 static int tomoyo_update_mkdev_acl(const u8 type, const char *filename, 675 static int tomoyo_update_mkdev_acl(const u8 type, const char *filename,
676 char *mode, char *major, char *minor, 676 char *mode, char *major, char *minor,
677 struct tomoyo_domain_info * const 677 struct tomoyo_domain_info * const
678 domain, const bool is_delete) 678 domain, const bool is_delete)
679 { 679 {
680 struct tomoyo_mkdev_acl e = { 680 struct tomoyo_mkdev_acl e = {
681 .head.type = TOMOYO_TYPE_MKDEV_ACL, 681 .head.type = TOMOYO_TYPE_MKDEV_ACL,
682 .perm = 1 << type 682 .perm = 1 << type
683 }; 683 };
684 int error = is_delete ? -ENOENT : -ENOMEM; 684 int error = is_delete ? -ENOENT : -ENOMEM;
685 if (!tomoyo_parse_name_union(filename, &e.name) || 685 if (!tomoyo_parse_name_union(filename, &e.name) ||
686 !tomoyo_parse_number_union(mode, &e.mode) || 686 !tomoyo_parse_number_union(mode, &e.mode) ||
687 !tomoyo_parse_number_union(major, &e.major) || 687 !tomoyo_parse_number_union(major, &e.major) ||
688 !tomoyo_parse_number_union(minor, &e.minor)) 688 !tomoyo_parse_number_union(minor, &e.minor))
689 goto out; 689 goto out;
690 error = tomoyo_update_domain(&e.head, sizeof(e), is_delete, domain, 690 error = tomoyo_update_domain(&e.head, sizeof(e), is_delete, domain,
691 tomoyo_same_mkdev_acl, 691 tomoyo_same_mkdev_acl,
692 tomoyo_merge_mkdev_acl); 692 tomoyo_merge_mkdev_acl);
693 out: 693 out:
694 tomoyo_put_name_union(&e.name); 694 tomoyo_put_name_union(&e.name);
695 tomoyo_put_number_union(&e.mode); 695 tomoyo_put_number_union(&e.mode);
696 tomoyo_put_number_union(&e.major); 696 tomoyo_put_number_union(&e.major);
697 tomoyo_put_number_union(&e.minor); 697 tomoyo_put_number_union(&e.minor);
698 return error; 698 return error;
699 } 699 }
700 700
701 static bool tomoyo_same_path2_acl(const struct tomoyo_acl_info *a, 701 static bool tomoyo_same_path2_acl(const struct tomoyo_acl_info *a,
702 const struct tomoyo_acl_info *b) 702 const struct tomoyo_acl_info *b)
703 { 703 {
704 const struct tomoyo_path2_acl *p1 = container_of(a, typeof(*p1), head); 704 const struct tomoyo_path2_acl *p1 = container_of(a, typeof(*p1), head);
705 const struct tomoyo_path2_acl *p2 = container_of(b, typeof(*p2), head); 705 const struct tomoyo_path2_acl *p2 = container_of(b, typeof(*p2), head);
706 return tomoyo_same_acl_head(&p1->head, &p2->head) 706 return tomoyo_same_acl_head(&p1->head, &p2->head)
707 && tomoyo_same_name_union(&p1->name1, &p2->name1) 707 && tomoyo_same_name_union(&p1->name1, &p2->name1)
708 && tomoyo_same_name_union(&p1->name2, &p2->name2); 708 && tomoyo_same_name_union(&p1->name2, &p2->name2);
709 } 709 }
710 710
711 static bool tomoyo_merge_path2_acl(struct tomoyo_acl_info *a, 711 static bool tomoyo_merge_path2_acl(struct tomoyo_acl_info *a,
712 struct tomoyo_acl_info *b, 712 struct tomoyo_acl_info *b,
713 const bool is_delete) 713 const bool is_delete)
714 { 714 {
715 u8 * const a_perm = &container_of(a, struct tomoyo_path2_acl, head) 715 u8 * const a_perm = &container_of(a, struct tomoyo_path2_acl, head)
716 ->perm; 716 ->perm;
717 u8 perm = *a_perm; 717 u8 perm = *a_perm;
718 const u8 b_perm = container_of(b, struct tomoyo_path2_acl, head)->perm; 718 const u8 b_perm = container_of(b, struct tomoyo_path2_acl, head)->perm;
719 if (is_delete) 719 if (is_delete)
720 perm &= ~b_perm; 720 perm &= ~b_perm;
721 else 721 else
722 perm |= b_perm; 722 perm |= b_perm;
723 *a_perm = perm; 723 *a_perm = perm;
724 return !perm; 724 return !perm;
725 } 725 }
726 726
727 /** 727 /**
728 * tomoyo_update_path2_acl - Update "struct tomoyo_path2_acl" list. 728 * tomoyo_update_path2_acl - Update "struct tomoyo_path2_acl" list.
729 * 729 *
730 * @type: Type of operation. 730 * @type: Type of operation.
731 * @filename1: First filename. 731 * @filename1: First filename.
732 * @filename2: Second filename. 732 * @filename2: Second filename.
733 * @domain: Pointer to "struct tomoyo_domain_info". 733 * @domain: Pointer to "struct tomoyo_domain_info".
734 * @is_delete: True if it is a delete request. 734 * @is_delete: True if it is a delete request.
735 * 735 *
736 * Returns 0 on success, negative value otherwise. 736 * Returns 0 on success, negative value otherwise.
737 * 737 *
738 * Caller holds tomoyo_read_lock(). 738 * Caller holds tomoyo_read_lock().
739 */ 739 */
740 static int tomoyo_update_path2_acl(const u8 type, const char *filename1, 740 static int tomoyo_update_path2_acl(const u8 type, const char *filename1,
741 const char *filename2, 741 const char *filename2,
742 struct tomoyo_domain_info * const domain, 742 struct tomoyo_domain_info * const domain,
743 const bool is_delete) 743 const bool is_delete)
744 { 744 {
745 struct tomoyo_path2_acl e = { 745 struct tomoyo_path2_acl e = {
746 .head.type = TOMOYO_TYPE_PATH2_ACL, 746 .head.type = TOMOYO_TYPE_PATH2_ACL,
747 .perm = 1 << type 747 .perm = 1 << type
748 }; 748 };
749 int error = is_delete ? -ENOENT : -ENOMEM; 749 int error = is_delete ? -ENOENT : -ENOMEM;
750 if (!tomoyo_parse_name_union(filename1, &e.name1) || 750 if (!tomoyo_parse_name_union(filename1, &e.name1) ||
751 !tomoyo_parse_name_union(filename2, &e.name2)) 751 !tomoyo_parse_name_union(filename2, &e.name2))
752 goto out; 752 goto out;
753 error = tomoyo_update_domain(&e.head, sizeof(e), is_delete, domain, 753 error = tomoyo_update_domain(&e.head, sizeof(e), is_delete, domain,
754 tomoyo_same_path2_acl, 754 tomoyo_same_path2_acl,
755 tomoyo_merge_path2_acl); 755 tomoyo_merge_path2_acl);
756 out: 756 out:
757 tomoyo_put_name_union(&e.name1); 757 tomoyo_put_name_union(&e.name1);
758 tomoyo_put_name_union(&e.name2); 758 tomoyo_put_name_union(&e.name2);
759 return error; 759 return error;
760 } 760 }
761 761
762 /** 762 /**
763 * tomoyo_path_permission - Check permission for single path operation. 763 * tomoyo_path_permission - Check permission for single path operation.
764 * 764 *
765 * @r: Pointer to "struct tomoyo_request_info". 765 * @r: Pointer to "struct tomoyo_request_info".
766 * @operation: Type of operation. 766 * @operation: Type of operation.
767 * @filename: Filename to check. 767 * @filename: Filename to check.
768 * 768 *
769 * Returns 0 on success, negative value otherwise. 769 * Returns 0 on success, negative value otherwise.
770 * 770 *
771 * Caller holds tomoyo_read_lock(). 771 * Caller holds tomoyo_read_lock().
772 */ 772 */
773 int tomoyo_path_permission(struct tomoyo_request_info *r, u8 operation, 773 int tomoyo_path_permission(struct tomoyo_request_info *r, u8 operation,
774 const struct tomoyo_path_info *filename) 774 const struct tomoyo_path_info *filename)
775 { 775 {
776 int error; 776 int error;
777 777
778 next: 778 next:
779 r->type = tomoyo_p2mac[operation]; 779 r->type = tomoyo_p2mac[operation];
780 r->mode = tomoyo_get_mode(r->profile, r->type); 780 r->mode = tomoyo_get_mode(r->profile, r->type);
781 if (r->mode == TOMOYO_CONFIG_DISABLED) 781 if (r->mode == TOMOYO_CONFIG_DISABLED)
782 return 0; 782 return 0;
783 r->param_type = TOMOYO_TYPE_PATH_ACL; 783 r->param_type = TOMOYO_TYPE_PATH_ACL;
784 r->param.path.filename = filename; 784 r->param.path.filename = filename;
785 r->param.path.operation = operation; 785 r->param.path.operation = operation;
786 do { 786 do {
787 tomoyo_check_acl(r, tomoyo_check_path_acl); 787 tomoyo_check_acl(r, tomoyo_check_path_acl);
788 if (!r->granted && operation == TOMOYO_TYPE_READ && 788 if (!r->granted && operation == TOMOYO_TYPE_READ &&
789 !r->domain->ignore_global_allow_read && 789 !r->domain->ignore_global_allow_read &&
790 tomoyo_globally_readable_file(filename)) 790 tomoyo_globally_readable_file(filename))
791 r->granted = true; 791 r->granted = true;
792 error = tomoyo_audit_path_log(r); 792 error = tomoyo_audit_path_log(r);
793 /* 793 /*
794 * Do not retry for execute request, for alias may have 794 * Do not retry for execute request, for alias may have
795 * changed. 795 * changed.
796 */ 796 */
797 } while (error == TOMOYO_RETRY_REQUEST && 797 } while (error == TOMOYO_RETRY_REQUEST &&
798 operation != TOMOYO_TYPE_EXECUTE); 798 operation != TOMOYO_TYPE_EXECUTE);
799 /* 799 /*
800 * Since "allow_truncate" doesn't imply "allow_rewrite" permission, 800 * Since "allow_truncate" doesn't imply "allow_rewrite" permission,
801 * we need to check "allow_rewrite" permission if the filename is 801 * we need to check "allow_rewrite" permission if the filename is
802 * specified by "deny_rewrite" keyword. 802 * specified by "deny_rewrite" keyword.
803 */ 803 */
804 if (!error && operation == TOMOYO_TYPE_TRUNCATE && 804 if (!error && operation == TOMOYO_TYPE_TRUNCATE &&
805 tomoyo_no_rewrite_file(filename)) { 805 tomoyo_no_rewrite_file(filename)) {
806 operation = TOMOYO_TYPE_REWRITE; 806 operation = TOMOYO_TYPE_REWRITE;
807 goto next; 807 goto next;
808 } 808 }
809 return error; 809 return error;
810 } 810 }
811 811
812 static bool tomoyo_same_path_number_acl(const struct tomoyo_acl_info *a, 812 static bool tomoyo_same_path_number_acl(const struct tomoyo_acl_info *a,
813 const struct tomoyo_acl_info *b) 813 const struct tomoyo_acl_info *b)
814 { 814 {
815 const struct tomoyo_path_number_acl *p1 = container_of(a, typeof(*p1), 815 const struct tomoyo_path_number_acl *p1 = container_of(a, typeof(*p1),
816 head); 816 head);
817 const struct tomoyo_path_number_acl *p2 = container_of(b, typeof(*p2), 817 const struct tomoyo_path_number_acl *p2 = container_of(b, typeof(*p2),
818 head); 818 head);
819 return tomoyo_same_acl_head(&p1->head, &p2->head) 819 return tomoyo_same_acl_head(&p1->head, &p2->head)
820 && tomoyo_same_name_union(&p1->name, &p2->name) 820 && tomoyo_same_name_union(&p1->name, &p2->name)
821 && tomoyo_same_number_union(&p1->number, &p2->number); 821 && tomoyo_same_number_union(&p1->number, &p2->number);
822 } 822 }
823 823
824 static bool tomoyo_merge_path_number_acl(struct tomoyo_acl_info *a, 824 static bool tomoyo_merge_path_number_acl(struct tomoyo_acl_info *a,
825 struct tomoyo_acl_info *b, 825 struct tomoyo_acl_info *b,
826 const bool is_delete) 826 const bool is_delete)
827 { 827 {
828 u8 * const a_perm = &container_of(a, struct tomoyo_path_number_acl, 828 u8 * const a_perm = &container_of(a, struct tomoyo_path_number_acl,
829 head)->perm; 829 head)->perm;
830 u8 perm = *a_perm; 830 u8 perm = *a_perm;
831 const u8 b_perm = container_of(b, struct tomoyo_path_number_acl, head) 831 const u8 b_perm = container_of(b, struct tomoyo_path_number_acl, head)
832 ->perm; 832 ->perm;
833 if (is_delete) 833 if (is_delete)
834 perm &= ~b_perm; 834 perm &= ~b_perm;
835 else 835 else
836 perm |= b_perm; 836 perm |= b_perm;
837 *a_perm = perm; 837 *a_perm = perm;
838 return !perm; 838 return !perm;
839 } 839 }
840 840
841 /** 841 /**
842 * tomoyo_update_path_number_acl - Update ioctl/chmod/chown/chgrp ACL. 842 * tomoyo_update_path_number_acl - Update ioctl/chmod/chown/chgrp ACL.
843 * 843 *
844 * @type: Type of operation. 844 * @type: Type of operation.
845 * @filename: Filename. 845 * @filename: Filename.
846 * @number: Number. 846 * @number: Number.
847 * @domain: Pointer to "struct tomoyo_domain_info". 847 * @domain: Pointer to "struct tomoyo_domain_info".
848 * @is_delete: True if it is a delete request. 848 * @is_delete: True if it is a delete request.
849 * 849 *
850 * Returns 0 on success, negative value otherwise. 850 * Returns 0 on success, negative value otherwise.
851 */ 851 */
852 static int tomoyo_update_path_number_acl(const u8 type, const char *filename, 852 static int tomoyo_update_path_number_acl(const u8 type, const char *filename,
853 char *number, 853 char *number,
854 struct tomoyo_domain_info * const 854 struct tomoyo_domain_info * const
855 domain, 855 domain,
856 const bool is_delete) 856 const bool is_delete)
857 { 857 {
858 struct tomoyo_path_number_acl e = { 858 struct tomoyo_path_number_acl e = {
859 .head.type = TOMOYO_TYPE_PATH_NUMBER_ACL, 859 .head.type = TOMOYO_TYPE_PATH_NUMBER_ACL,
860 .perm = 1 << type 860 .perm = 1 << type
861 }; 861 };
862 int error = is_delete ? -ENOENT : -ENOMEM; 862 int error = is_delete ? -ENOENT : -ENOMEM;
863 if (!tomoyo_parse_name_union(filename, &e.name)) 863 if (!tomoyo_parse_name_union(filename, &e.name))
864 return -EINVAL; 864 return -EINVAL;
865 if (!tomoyo_parse_number_union(number, &e.number)) 865 if (!tomoyo_parse_number_union(number, &e.number))
866 goto out; 866 goto out;
867 error = tomoyo_update_domain(&e.head, sizeof(e), is_delete, domain, 867 error = tomoyo_update_domain(&e.head, sizeof(e), is_delete, domain,
868 tomoyo_same_path_number_acl, 868 tomoyo_same_path_number_acl,
869 tomoyo_merge_path_number_acl); 869 tomoyo_merge_path_number_acl);
870 out: 870 out:
871 tomoyo_put_name_union(&e.name); 871 tomoyo_put_name_union(&e.name);
872 tomoyo_put_number_union(&e.number); 872 tomoyo_put_number_union(&e.number);
873 return error; 873 return error;
874 } 874 }
875 875
876 /** 876 /**
877 * tomoyo_path_number_perm - Check permission for "create", "mkdir", "mkfifo", "mksock", "ioctl", "chmod", "chown", "chgrp". 877 * tomoyo_path_number_perm - Check permission for "create", "mkdir", "mkfifo", "mksock", "ioctl", "chmod", "chown", "chgrp".
878 * 878 *
879 * @type: Type of operation. 879 * @type: Type of operation.
880 * @path: Pointer to "struct path". 880 * @path: Pointer to "struct path".
881 * @number: Number. 881 * @number: Number.
882 * 882 *
883 * Returns 0 on success, negative value otherwise. 883 * Returns 0 on success, negative value otherwise.
884 */ 884 */
885 int tomoyo_path_number_perm(const u8 type, struct path *path, 885 int tomoyo_path_number_perm(const u8 type, struct path *path,
886 unsigned long number) 886 unsigned long number)
887 { 887 {
888 struct tomoyo_request_info r; 888 struct tomoyo_request_info r;
889 int error = -ENOMEM; 889 int error = -ENOMEM;
890 struct tomoyo_path_info buf; 890 struct tomoyo_path_info buf;
891 int idx; 891 int idx;
892 892
893 if (tomoyo_init_request_info(&r, NULL, tomoyo_pn2mac[type]) 893 if (tomoyo_init_request_info(&r, NULL, tomoyo_pn2mac[type])
894 == TOMOYO_CONFIG_DISABLED || !path->mnt || !path->dentry) 894 == TOMOYO_CONFIG_DISABLED || !path->mnt || !path->dentry)
895 return 0; 895 return 0;
896 idx = tomoyo_read_lock(); 896 idx = tomoyo_read_lock();
897 if (!tomoyo_get_realpath(&buf, path)) 897 if (!tomoyo_get_realpath(&buf, path))
898 goto out; 898 goto out;
899 if (type == TOMOYO_TYPE_MKDIR) 899 if (type == TOMOYO_TYPE_MKDIR)
900 tomoyo_add_slash(&buf); 900 tomoyo_add_slash(&buf);
901 r.param_type = TOMOYO_TYPE_PATH_NUMBER_ACL; 901 r.param_type = TOMOYO_TYPE_PATH_NUMBER_ACL;
902 r.param.path_number.operation = type; 902 r.param.path_number.operation = type;
903 r.param.path_number.filename = &buf; 903 r.param.path_number.filename = &buf;
904 r.param.path_number.number = number; 904 r.param.path_number.number = number;
905 do { 905 do {
906 tomoyo_check_acl(&r, tomoyo_check_path_number_acl); 906 tomoyo_check_acl(&r, tomoyo_check_path_number_acl);
907 error = tomoyo_audit_path_number_log(&r); 907 error = tomoyo_audit_path_number_log(&r);
908 } while (error == TOMOYO_RETRY_REQUEST); 908 } while (error == TOMOYO_RETRY_REQUEST);
909 kfree(buf.name); 909 kfree(buf.name);
910 out: 910 out:
911 tomoyo_read_unlock(idx); 911 tomoyo_read_unlock(idx);
912 if (r.mode != TOMOYO_CONFIG_ENFORCING) 912 if (r.mode != TOMOYO_CONFIG_ENFORCING)
913 error = 0; 913 error = 0;
914 return error; 914 return error;
915 } 915 }
916 916
917 /** 917 /**
918 * tomoyo_check_open_permission - Check permission for "read" and "write". 918 * tomoyo_check_open_permission - Check permission for "read" and "write".
919 * 919 *
920 * @domain: Pointer to "struct tomoyo_domain_info". 920 * @domain: Pointer to "struct tomoyo_domain_info".
921 * @path: Pointer to "struct path". 921 * @path: Pointer to "struct path".
922 * @flag: Flags for open(). 922 * @flag: Flags for open().
923 * 923 *
924 * Returns 0 on success, negative value otherwise. 924 * Returns 0 on success, negative value otherwise.
925 */ 925 */
926 int tomoyo_check_open_permission(struct tomoyo_domain_info *domain, 926 int tomoyo_check_open_permission(struct tomoyo_domain_info *domain,
927 struct path *path, const int flag) 927 struct path *path, const int flag)
928 { 928 {
929 const u8 acc_mode = ACC_MODE(flag); 929 const u8 acc_mode = ACC_MODE(flag);
930 int error = -ENOMEM; 930 int error = 0;
931 struct tomoyo_path_info buf; 931 struct tomoyo_path_info buf;
932 struct tomoyo_request_info r; 932 struct tomoyo_request_info r;
933 int idx; 933 int idx;
934 934
935 if (!path->mnt || 935 if (!path->mnt ||
936 (path->dentry->d_inode && S_ISDIR(path->dentry->d_inode->i_mode))) 936 (path->dentry->d_inode && S_ISDIR(path->dentry->d_inode->i_mode)))
937 return 0; 937 return 0;
938 buf.name = NULL; 938 buf.name = NULL;
939 r.mode = TOMOYO_CONFIG_DISABLED; 939 r.mode = TOMOYO_CONFIG_DISABLED;
940 idx = tomoyo_read_lock(); 940 idx = tomoyo_read_lock();
941 if (!tomoyo_get_realpath(&buf, path))
942 goto out;
943 error = 0;
944 /* 941 /*
945 * If the filename is specified by "deny_rewrite" keyword, 942 * If the filename is specified by "deny_rewrite" keyword,
946 * we need to check "allow_rewrite" permission when the filename is not 943 * we need to check "allow_rewrite" permission when the filename is not
947 * opened for append mode or the filename is truncated at open time. 944 * opened for append mode or the filename is truncated at open time.
948 */ 945 */
949 if ((acc_mode & MAY_WRITE) && !(flag & O_APPEND) 946 if ((acc_mode & MAY_WRITE) && !(flag & O_APPEND)
950 && tomoyo_init_request_info(&r, domain, TOMOYO_MAC_FILE_REWRITE) 947 && tomoyo_init_request_info(&r, domain, TOMOYO_MAC_FILE_REWRITE)
951 != TOMOYO_CONFIG_DISABLED) { 948 != TOMOYO_CONFIG_DISABLED) {
952 if (!tomoyo_get_realpath(&buf, path)) { 949 if (!tomoyo_get_realpath(&buf, path)) {
953 error = -ENOMEM; 950 error = -ENOMEM;
954 goto out; 951 goto out;
955 } 952 }
956 if (tomoyo_no_rewrite_file(&buf)) 953 if (tomoyo_no_rewrite_file(&buf))
957 error = tomoyo_path_permission(&r, TOMOYO_TYPE_REWRITE, 954 error = tomoyo_path_permission(&r, TOMOYO_TYPE_REWRITE,
958 &buf); 955 &buf);
959 } 956 }
960 if (!error && acc_mode && 957 if (!error && acc_mode &&
961 tomoyo_init_request_info(&r, domain, TOMOYO_MAC_FILE_OPEN) 958 tomoyo_init_request_info(&r, domain, TOMOYO_MAC_FILE_OPEN)
962 != TOMOYO_CONFIG_DISABLED) { 959 != TOMOYO_CONFIG_DISABLED) {
963 u8 operation; 960 u8 operation;
964 if (!buf.name && !tomoyo_get_realpath(&buf, path)) { 961 if (!buf.name && !tomoyo_get_realpath(&buf, path)) {
965 error = -ENOMEM; 962 error = -ENOMEM;
966 goto out; 963 goto out;
967 } 964 }
968 if (acc_mode == (MAY_READ | MAY_WRITE)) 965 if (acc_mode == (MAY_READ | MAY_WRITE))
969 operation = TOMOYO_TYPE_READ_WRITE; 966 operation = TOMOYO_TYPE_READ_WRITE;
970 else if (acc_mode == MAY_READ) 967 else if (acc_mode == MAY_READ)
971 operation = TOMOYO_TYPE_READ; 968 operation = TOMOYO_TYPE_READ;
972 else 969 else
973 operation = TOMOYO_TYPE_WRITE; 970 operation = TOMOYO_TYPE_WRITE;
974 error = tomoyo_path_permission(&r, operation, &buf); 971 error = tomoyo_path_permission(&r, operation, &buf);
975 } 972 }
976 out: 973 out:
977 kfree(buf.name); 974 kfree(buf.name);
978 tomoyo_read_unlock(idx); 975 tomoyo_read_unlock(idx);
979 if (r.mode != TOMOYO_CONFIG_ENFORCING) 976 if (r.mode != TOMOYO_CONFIG_ENFORCING)
980 error = 0; 977 error = 0;
981 return error; 978 return error;
982 } 979 }
983 980
984 /** 981 /**
985 * tomoyo_path_perm - Check permission for "unlink", "rmdir", "truncate", "symlink", "rewrite", "chroot" and "unmount". 982 * tomoyo_path_perm - Check permission for "unlink", "rmdir", "truncate", "symlink", "rewrite", "chroot" and "unmount".
986 * 983 *
987 * @operation: Type of operation. 984 * @operation: Type of operation.
988 * @path: Pointer to "struct path". 985 * @path: Pointer to "struct path".
989 * 986 *
990 * Returns 0 on success, negative value otherwise. 987 * Returns 0 on success, negative value otherwise.
991 */ 988 */
992 int tomoyo_path_perm(const u8 operation, struct path *path) 989 int tomoyo_path_perm(const u8 operation, struct path *path)
993 { 990 {
994 int error = -ENOMEM; 991 int error = -ENOMEM;
995 struct tomoyo_path_info buf; 992 struct tomoyo_path_info buf;
996 struct tomoyo_request_info r; 993 struct tomoyo_request_info r;
997 int idx; 994 int idx;
998 995
999 if (!path->mnt) 996 if (!path->mnt)
1000 return 0; 997 return 0;
1001 if (tomoyo_init_request_info(&r, NULL, tomoyo_p2mac[operation]) 998 if (tomoyo_init_request_info(&r, NULL, tomoyo_p2mac[operation])
1002 == TOMOYO_CONFIG_DISABLED) 999 == TOMOYO_CONFIG_DISABLED)
1003 return 0; 1000 return 0;
1004 buf.name = NULL; 1001 buf.name = NULL;
1005 idx = tomoyo_read_lock(); 1002 idx = tomoyo_read_lock();
1006 if (!tomoyo_get_realpath(&buf, path)) 1003 if (!tomoyo_get_realpath(&buf, path))
1007 goto out; 1004 goto out;
1008 switch (operation) { 1005 switch (operation) {
1009 case TOMOYO_TYPE_REWRITE: 1006 case TOMOYO_TYPE_REWRITE:
1010 if (!tomoyo_no_rewrite_file(&buf)) { 1007 if (!tomoyo_no_rewrite_file(&buf)) {
1011 error = 0; 1008 error = 0;
1012 goto out; 1009 goto out;
1013 } 1010 }
1014 break; 1011 break;
1015 case TOMOYO_TYPE_RMDIR: 1012 case TOMOYO_TYPE_RMDIR:
1016 case TOMOYO_TYPE_CHROOT: 1013 case TOMOYO_TYPE_CHROOT:
1017 case TOMOYO_TYPE_UMOUNT: 1014 case TOMOYO_TYPE_UMOUNT:
1018 tomoyo_add_slash(&buf); 1015 tomoyo_add_slash(&buf);
1019 break; 1016 break;
1020 } 1017 }
1021 error = tomoyo_path_permission(&r, operation, &buf); 1018 error = tomoyo_path_permission(&r, operation, &buf);
1022 out: 1019 out:
1023 kfree(buf.name); 1020 kfree(buf.name);
1024 tomoyo_read_unlock(idx); 1021 tomoyo_read_unlock(idx);
1025 if (r.mode != TOMOYO_CONFIG_ENFORCING) 1022 if (r.mode != TOMOYO_CONFIG_ENFORCING)
1026 error = 0; 1023 error = 0;
1027 return error; 1024 return error;
1028 } 1025 }
1029 1026
1030 /** 1027 /**
1031 * tomoyo_mkdev_perm - Check permission for "mkblock" and "mkchar". 1028 * tomoyo_mkdev_perm - Check permission for "mkblock" and "mkchar".
1032 * 1029 *
1033 * @operation: Type of operation. (TOMOYO_TYPE_MKCHAR or TOMOYO_TYPE_MKBLOCK) 1030 * @operation: Type of operation. (TOMOYO_TYPE_MKCHAR or TOMOYO_TYPE_MKBLOCK)
1034 * @path: Pointer to "struct path". 1031 * @path: Pointer to "struct path".
1035 * @mode: Create mode. 1032 * @mode: Create mode.
1036 * @dev: Device number. 1033 * @dev: Device number.
1037 * 1034 *
1038 * Returns 0 on success, negative value otherwise. 1035 * Returns 0 on success, negative value otherwise.
1039 */ 1036 */
1040 int tomoyo_mkdev_perm(const u8 operation, struct path *path, 1037 int tomoyo_mkdev_perm(const u8 operation, struct path *path,
1041 const unsigned int mode, unsigned int dev) 1038 const unsigned int mode, unsigned int dev)
1042 { 1039 {
1043 struct tomoyo_request_info r; 1040 struct tomoyo_request_info r;
1044 int error = -ENOMEM; 1041 int error = -ENOMEM;
1045 struct tomoyo_path_info buf; 1042 struct tomoyo_path_info buf;
1046 int idx; 1043 int idx;
1047 1044
1048 if (!path->mnt || 1045 if (!path->mnt ||
1049 tomoyo_init_request_info(&r, NULL, tomoyo_pnnn2mac[operation]) 1046 tomoyo_init_request_info(&r, NULL, tomoyo_pnnn2mac[operation])
1050 == TOMOYO_CONFIG_DISABLED) 1047 == TOMOYO_CONFIG_DISABLED)
1051 return 0; 1048 return 0;
1052 idx = tomoyo_read_lock(); 1049 idx = tomoyo_read_lock();
1053 error = -ENOMEM; 1050 error = -ENOMEM;
1054 if (tomoyo_get_realpath(&buf, path)) { 1051 if (tomoyo_get_realpath(&buf, path)) {
1055 dev = new_decode_dev(dev); 1052 dev = new_decode_dev(dev);
1056 r.param_type = TOMOYO_TYPE_MKDEV_ACL; 1053 r.param_type = TOMOYO_TYPE_MKDEV_ACL;
1057 r.param.mkdev.filename = &buf; 1054 r.param.mkdev.filename = &buf;
1058 r.param.mkdev.operation = operation; 1055 r.param.mkdev.operation = operation;
1059 r.param.mkdev.mode = mode; 1056 r.param.mkdev.mode = mode;
1060 r.param.mkdev.major = MAJOR(dev); 1057 r.param.mkdev.major = MAJOR(dev);
1061 r.param.mkdev.minor = MINOR(dev); 1058 r.param.mkdev.minor = MINOR(dev);
1062 tomoyo_check_acl(&r, tomoyo_check_mkdev_acl); 1059 tomoyo_check_acl(&r, tomoyo_check_mkdev_acl);
1063 error = tomoyo_audit_mkdev_log(&r); 1060 error = tomoyo_audit_mkdev_log(&r);
1064 kfree(buf.name); 1061 kfree(buf.name);
1065 } 1062 }
1066 tomoyo_read_unlock(idx); 1063 tomoyo_read_unlock(idx);
1067 if (r.mode != TOMOYO_CONFIG_ENFORCING) 1064 if (r.mode != TOMOYO_CONFIG_ENFORCING)
1068 error = 0; 1065 error = 0;
1069 return error; 1066 return error;
1070 } 1067 }
1071 1068
1072 /** 1069 /**
1073 * tomoyo_path2_perm - Check permission for "rename", "link" and "pivot_root". 1070 * tomoyo_path2_perm - Check permission for "rename", "link" and "pivot_root".
1074 * 1071 *
1075 * @operation: Type of operation. 1072 * @operation: Type of operation.
1076 * @path1: Pointer to "struct path". 1073 * @path1: Pointer to "struct path".
1077 * @path2: Pointer to "struct path". 1074 * @path2: Pointer to "struct path".
1078 * 1075 *
1079 * Returns 0 on success, negative value otherwise. 1076 * Returns 0 on success, negative value otherwise.
1080 */ 1077 */
1081 int tomoyo_path2_perm(const u8 operation, struct path *path1, 1078 int tomoyo_path2_perm(const u8 operation, struct path *path1,
1082 struct path *path2) 1079 struct path *path2)
1083 { 1080 {
1084 int error = -ENOMEM; 1081 int error = -ENOMEM;
1085 struct tomoyo_path_info buf1; 1082 struct tomoyo_path_info buf1;
1086 struct tomoyo_path_info buf2; 1083 struct tomoyo_path_info buf2;
1087 struct tomoyo_request_info r; 1084 struct tomoyo_request_info r;
1088 int idx; 1085 int idx;
1089 1086
1090 if (!path1->mnt || !path2->mnt || 1087 if (!path1->mnt || !path2->mnt ||
1091 tomoyo_init_request_info(&r, NULL, tomoyo_pp2mac[operation]) 1088 tomoyo_init_request_info(&r, NULL, tomoyo_pp2mac[operation])
1092 == TOMOYO_CONFIG_DISABLED) 1089 == TOMOYO_CONFIG_DISABLED)
1093 return 0; 1090 return 0;
1094 buf1.name = NULL; 1091 buf1.name = NULL;
1095 buf2.name = NULL; 1092 buf2.name = NULL;
1096 idx = tomoyo_read_lock(); 1093 idx = tomoyo_read_lock();
1097 if (!tomoyo_get_realpath(&buf1, path1) || 1094 if (!tomoyo_get_realpath(&buf1, path1) ||
1098 !tomoyo_get_realpath(&buf2, path2)) 1095 !tomoyo_get_realpath(&buf2, path2))
1099 goto out; 1096 goto out;
1100 switch (operation) { 1097 switch (operation) {
1101 struct dentry *dentry; 1098 struct dentry *dentry;
1102 case TOMOYO_TYPE_RENAME: 1099 case TOMOYO_TYPE_RENAME:
1103 case TOMOYO_TYPE_LINK: 1100 case TOMOYO_TYPE_LINK:
1104 dentry = path1->dentry; 1101 dentry = path1->dentry;
1105 if (!dentry->d_inode || !S_ISDIR(dentry->d_inode->i_mode)) 1102 if (!dentry->d_inode || !S_ISDIR(dentry->d_inode->i_mode))
1106 break; 1103 break;
1107 /* fall through */ 1104 /* fall through */
1108 case TOMOYO_TYPE_PIVOT_ROOT: 1105 case TOMOYO_TYPE_PIVOT_ROOT:
1109 tomoyo_add_slash(&buf1); 1106 tomoyo_add_slash(&buf1);
1110 tomoyo_add_slash(&buf2); 1107 tomoyo_add_slash(&buf2);
1111 break; 1108 break;
1112 } 1109 }
1113 r.param_type = TOMOYO_TYPE_PATH2_ACL; 1110 r.param_type = TOMOYO_TYPE_PATH2_ACL;
1114 r.param.path2.operation = operation; 1111 r.param.path2.operation = operation;
1115 r.param.path2.filename1 = &buf1; 1112 r.param.path2.filename1 = &buf1;
1116 r.param.path2.filename2 = &buf2; 1113 r.param.path2.filename2 = &buf2;
1117 do { 1114 do {
1118 tomoyo_check_acl(&r, tomoyo_check_path2_acl); 1115 tomoyo_check_acl(&r, tomoyo_check_path2_acl);
1119 error = tomoyo_audit_path2_log(&r); 1116 error = tomoyo_audit_path2_log(&r);
1120 } while (error == TOMOYO_RETRY_REQUEST); 1117 } while (error == TOMOYO_RETRY_REQUEST);
1121 out: 1118 out:
1122 kfree(buf1.name); 1119 kfree(buf1.name);
1123 kfree(buf2.name); 1120 kfree(buf2.name);
1124 tomoyo_read_unlock(idx); 1121 tomoyo_read_unlock(idx);
1125 if (r.mode != TOMOYO_CONFIG_ENFORCING) 1122 if (r.mode != TOMOYO_CONFIG_ENFORCING)
1126 error = 0; 1123 error = 0;
1127 return error; 1124 return error;
1128 } 1125 }
1129 1126
1130 /** 1127 /**
1131 * tomoyo_write_file - Update file related list. 1128 * tomoyo_write_file - Update file related list.
1132 * 1129 *
1133 * @data: String to parse. 1130 * @data: String to parse.
1134 * @domain: Pointer to "struct tomoyo_domain_info". 1131 * @domain: Pointer to "struct tomoyo_domain_info".
1135 * @is_delete: True if it is a delete request. 1132 * @is_delete: True if it is a delete request.
1136 * 1133 *
1137 * Returns 0 on success, negative value otherwise. 1134 * Returns 0 on success, negative value otherwise.
1138 * 1135 *
1139 * Caller holds tomoyo_read_lock(). 1136 * Caller holds tomoyo_read_lock().
1140 */ 1137 */
1141 int tomoyo_write_file(char *data, struct tomoyo_domain_info *domain, 1138 int tomoyo_write_file(char *data, struct tomoyo_domain_info *domain,
1142 const bool is_delete) 1139 const bool is_delete)
1143 { 1140 {
1144 char *w[5]; 1141 char *w[5];
1145 u8 type; 1142 u8 type;
1146 if (!tomoyo_tokenize(data, w, sizeof(w)) || !w[1][0]) 1143 if (!tomoyo_tokenize(data, w, sizeof(w)) || !w[1][0])
1147 return -EINVAL; 1144 return -EINVAL;
1148 if (strncmp(w[0], "allow_", 6)) 1145 if (strncmp(w[0], "allow_", 6))
1149 goto out; 1146 goto out;
1150 w[0] += 6; 1147 w[0] += 6;
1151 for (type = 0; type < TOMOYO_MAX_PATH_OPERATION; type++) { 1148 for (type = 0; type < TOMOYO_MAX_PATH_OPERATION; type++) {
1152 if (strcmp(w[0], tomoyo_path_keyword[type])) 1149 if (strcmp(w[0], tomoyo_path_keyword[type]))
1153 continue; 1150 continue;
1154 return tomoyo_update_path_acl(type, w[1], domain, is_delete); 1151 return tomoyo_update_path_acl(type, w[1], domain, is_delete);
1155 } 1152 }
1156 if (!w[2][0]) 1153 if (!w[2][0])
1157 goto out; 1154 goto out;
1158 for (type = 0; type < TOMOYO_MAX_PATH2_OPERATION; type++) { 1155 for (type = 0; type < TOMOYO_MAX_PATH2_OPERATION; type++) {
1159 if (strcmp(w[0], tomoyo_path2_keyword[type])) 1156 if (strcmp(w[0], tomoyo_path2_keyword[type]))
1160 continue; 1157 continue;
1161 return tomoyo_update_path2_acl(type, w[1], w[2], domain, 1158 return tomoyo_update_path2_acl(type, w[1], w[2], domain,
1162 is_delete); 1159 is_delete);
1163 } 1160 }
1164 for (type = 0; type < TOMOYO_MAX_PATH_NUMBER_OPERATION; type++) { 1161 for (type = 0; type < TOMOYO_MAX_PATH_NUMBER_OPERATION; type++) {
1165 if (strcmp(w[0], tomoyo_path_number_keyword[type])) 1162 if (strcmp(w[0], tomoyo_path_number_keyword[type]))
1166 continue; 1163 continue;
1167 return tomoyo_update_path_number_acl(type, w[1], w[2], domain, 1164 return tomoyo_update_path_number_acl(type, w[1], w[2], domain,
1168 is_delete); 1165 is_delete);
1169 } 1166 }
1170 if (!w[3][0] || !w[4][0]) 1167 if (!w[3][0] || !w[4][0])
1171 goto out; 1168 goto out;
1172 for (type = 0; type < TOMOYO_MAX_MKDEV_OPERATION; type++) { 1169 for (type = 0; type < TOMOYO_MAX_MKDEV_OPERATION; type++) {
1173 if (strcmp(w[0], tomoyo_mkdev_keyword[type])) 1170 if (strcmp(w[0], tomoyo_mkdev_keyword[type]))
1174 continue; 1171 continue;
1175 return tomoyo_update_mkdev_acl(type, w[1], w[2], w[3], 1172 return tomoyo_update_mkdev_acl(type, w[1], w[2], w[3],
1176 w[4], domain, is_delete); 1173 w[4], domain, is_delete);
1177 } 1174 }
1178 out: 1175 out:
1179 return -EINVAL; 1176 return -EINVAL;
1180 } 1177 }
1181 1178