Greg Kroah-Hartman | b244131 | 2017-11-01 15:07:57 +0100 | [diff] [blame] | 1 | // SPDX-License-Identifier: GPL-2.0 |
Kentaro Takeda | 9590837 | 2009-02-05 17:18:13 +0900 | [diff] [blame] | 2 | /* |
| 3 | * security/tomoyo/common.c |
| 4 | * |
Tetsuo Handa | 0f2a55d | 2011-07-14 14:46:51 +0900 | [diff] [blame] | 5 | * Copyright (C) 2005-2011 NTT DATA CORPORATION |
Kentaro Takeda | 9590837 | 2009-02-05 17:18:13 +0900 | [diff] [blame] | 6 | */ |
| 7 | |
| 8 | #include <linux/uaccess.h> |
Tejun Heo | 5a0e3ad | 2010-03-24 17:04:11 +0900 | [diff] [blame] | 9 | #include <linux/slab.h> |
Kentaro Takeda | 9590837 | 2009-02-05 17:18:13 +0900 | [diff] [blame] | 10 | #include <linux/security.h> |
Kentaro Takeda | 9590837 | 2009-02-05 17:18:13 +0900 | [diff] [blame] | 11 | #include "common.h" |
Kentaro Takeda | 9590837 | 2009-02-05 17:18:13 +0900 | [diff] [blame] | 12 | |
Tetsuo Handa | eadd99c | 2011-06-26 23:18:58 +0900 | [diff] [blame] | 13 | /* String table for operation mode. */ |
| 14 | const char * const tomoyo_mode[TOMOYO_CONFIG_MAX_MODE] = { |
| 15 | [TOMOYO_CONFIG_DISABLED] = "disabled", |
| 16 | [TOMOYO_CONFIG_LEARNING] = "learning", |
| 17 | [TOMOYO_CONFIG_PERMISSIVE] = "permissive", |
| 18 | [TOMOYO_CONFIG_ENFORCING] = "enforcing" |
Kentaro Takeda | 9590837 | 2009-02-05 17:18:13 +0900 | [diff] [blame] | 19 | }; |
Kentaro Takeda | 9590837 | 2009-02-05 17:18:13 +0900 | [diff] [blame] | 20 | |
Tetsuo Handa | 57c2590 | 2010-06-03 20:38:44 +0900 | [diff] [blame] | 21 | /* String table for /sys/kernel/security/tomoyo/profile */ |
Tetsuo Handa | 2c47ab9 | 2011-06-26 23:21:19 +0900 | [diff] [blame] | 22 | const char * const tomoyo_mac_keywords[TOMOYO_MAX_MAC_INDEX |
Tetsuo Handa | 57c2590 | 2010-06-03 20:38:44 +0900 | [diff] [blame] | 23 | + TOMOYO_MAX_MAC_CATEGORY_INDEX] = { |
Tetsuo Handa | d58e0da | 2011-09-10 15:22:48 +0900 | [diff] [blame] | 24 | /* CONFIG::file group */ |
Tetsuo Handa | 2c47ab9 | 2011-06-26 23:21:19 +0900 | [diff] [blame] | 25 | [TOMOYO_MAC_FILE_EXECUTE] = "execute", |
| 26 | [TOMOYO_MAC_FILE_OPEN] = "open", |
| 27 | [TOMOYO_MAC_FILE_CREATE] = "create", |
| 28 | [TOMOYO_MAC_FILE_UNLINK] = "unlink", |
| 29 | [TOMOYO_MAC_FILE_GETATTR] = "getattr", |
| 30 | [TOMOYO_MAC_FILE_MKDIR] = "mkdir", |
| 31 | [TOMOYO_MAC_FILE_RMDIR] = "rmdir", |
| 32 | [TOMOYO_MAC_FILE_MKFIFO] = "mkfifo", |
| 33 | [TOMOYO_MAC_FILE_MKSOCK] = "mksock", |
| 34 | [TOMOYO_MAC_FILE_TRUNCATE] = "truncate", |
| 35 | [TOMOYO_MAC_FILE_SYMLINK] = "symlink", |
| 36 | [TOMOYO_MAC_FILE_MKBLOCK] = "mkblock", |
| 37 | [TOMOYO_MAC_FILE_MKCHAR] = "mkchar", |
| 38 | [TOMOYO_MAC_FILE_LINK] = "link", |
| 39 | [TOMOYO_MAC_FILE_RENAME] = "rename", |
| 40 | [TOMOYO_MAC_FILE_CHMOD] = "chmod", |
| 41 | [TOMOYO_MAC_FILE_CHOWN] = "chown", |
| 42 | [TOMOYO_MAC_FILE_CHGRP] = "chgrp", |
| 43 | [TOMOYO_MAC_FILE_IOCTL] = "ioctl", |
| 44 | [TOMOYO_MAC_FILE_CHROOT] = "chroot", |
| 45 | [TOMOYO_MAC_FILE_MOUNT] = "mount", |
| 46 | [TOMOYO_MAC_FILE_UMOUNT] = "unmount", |
| 47 | [TOMOYO_MAC_FILE_PIVOT_ROOT] = "pivot_root", |
Tetsuo Handa | 059d84d | 2011-09-10 15:23:54 +0900 | [diff] [blame] | 48 | /* CONFIG::network group */ |
| 49 | [TOMOYO_MAC_NETWORK_INET_STREAM_BIND] = "inet_stream_bind", |
| 50 | [TOMOYO_MAC_NETWORK_INET_STREAM_LISTEN] = "inet_stream_listen", |
| 51 | [TOMOYO_MAC_NETWORK_INET_STREAM_CONNECT] = "inet_stream_connect", |
| 52 | [TOMOYO_MAC_NETWORK_INET_DGRAM_BIND] = "inet_dgram_bind", |
| 53 | [TOMOYO_MAC_NETWORK_INET_DGRAM_SEND] = "inet_dgram_send", |
| 54 | [TOMOYO_MAC_NETWORK_INET_RAW_BIND] = "inet_raw_bind", |
| 55 | [TOMOYO_MAC_NETWORK_INET_RAW_SEND] = "inet_raw_send", |
| 56 | [TOMOYO_MAC_NETWORK_UNIX_STREAM_BIND] = "unix_stream_bind", |
| 57 | [TOMOYO_MAC_NETWORK_UNIX_STREAM_LISTEN] = "unix_stream_listen", |
| 58 | [TOMOYO_MAC_NETWORK_UNIX_STREAM_CONNECT] = "unix_stream_connect", |
| 59 | [TOMOYO_MAC_NETWORK_UNIX_DGRAM_BIND] = "unix_dgram_bind", |
| 60 | [TOMOYO_MAC_NETWORK_UNIX_DGRAM_SEND] = "unix_dgram_send", |
| 61 | [TOMOYO_MAC_NETWORK_UNIX_SEQPACKET_BIND] = "unix_seqpacket_bind", |
| 62 | [TOMOYO_MAC_NETWORK_UNIX_SEQPACKET_LISTEN] = "unix_seqpacket_listen", |
| 63 | [TOMOYO_MAC_NETWORK_UNIX_SEQPACKET_CONNECT] = "unix_seqpacket_connect", |
Tetsuo Handa | d58e0da | 2011-09-10 15:22:48 +0900 | [diff] [blame] | 64 | /* CONFIG::misc group */ |
| 65 | [TOMOYO_MAC_ENVIRON] = "env", |
| 66 | /* CONFIG group */ |
Tetsuo Handa | 57c2590 | 2010-06-03 20:38:44 +0900 | [diff] [blame] | 67 | [TOMOYO_MAX_MAC_INDEX + TOMOYO_MAC_CATEGORY_FILE] = "file", |
Tetsuo Handa | 059d84d | 2011-09-10 15:23:54 +0900 | [diff] [blame] | 68 | [TOMOYO_MAX_MAC_INDEX + TOMOYO_MAC_CATEGORY_NETWORK] = "network", |
Tetsuo Handa | d58e0da | 2011-09-10 15:22:48 +0900 | [diff] [blame] | 69 | [TOMOYO_MAX_MAC_INDEX + TOMOYO_MAC_CATEGORY_MISC] = "misc", |
Kentaro Takeda | 9590837 | 2009-02-05 17:18:13 +0900 | [diff] [blame] | 70 | }; |
| 71 | |
Tetsuo Handa | 2066a36 | 2011-07-08 13:21:37 +0900 | [diff] [blame] | 72 | /* String table for conditions. */ |
| 73 | const char * const tomoyo_condition_keyword[TOMOYO_MAX_CONDITION_KEYWORD] = { |
| 74 | [TOMOYO_TASK_UID] = "task.uid", |
| 75 | [TOMOYO_TASK_EUID] = "task.euid", |
| 76 | [TOMOYO_TASK_SUID] = "task.suid", |
| 77 | [TOMOYO_TASK_FSUID] = "task.fsuid", |
| 78 | [TOMOYO_TASK_GID] = "task.gid", |
| 79 | [TOMOYO_TASK_EGID] = "task.egid", |
| 80 | [TOMOYO_TASK_SGID] = "task.sgid", |
| 81 | [TOMOYO_TASK_FSGID] = "task.fsgid", |
| 82 | [TOMOYO_TASK_PID] = "task.pid", |
| 83 | [TOMOYO_TASK_PPID] = "task.ppid", |
Tetsuo Handa | 5b63685 | 2011-07-08 13:24:54 +0900 | [diff] [blame] | 84 | [TOMOYO_EXEC_ARGC] = "exec.argc", |
| 85 | [TOMOYO_EXEC_ENVC] = "exec.envc", |
Tetsuo Handa | 8761afd | 2011-07-08 13:22:41 +0900 | [diff] [blame] | 86 | [TOMOYO_TYPE_IS_SOCKET] = "socket", |
| 87 | [TOMOYO_TYPE_IS_SYMLINK] = "symlink", |
| 88 | [TOMOYO_TYPE_IS_FILE] = "file", |
| 89 | [TOMOYO_TYPE_IS_BLOCK_DEV] = "block", |
| 90 | [TOMOYO_TYPE_IS_DIRECTORY] = "directory", |
| 91 | [TOMOYO_TYPE_IS_CHAR_DEV] = "char", |
| 92 | [TOMOYO_TYPE_IS_FIFO] = "fifo", |
| 93 | [TOMOYO_MODE_SETUID] = "setuid", |
| 94 | [TOMOYO_MODE_SETGID] = "setgid", |
| 95 | [TOMOYO_MODE_STICKY] = "sticky", |
| 96 | [TOMOYO_MODE_OWNER_READ] = "owner_read", |
| 97 | [TOMOYO_MODE_OWNER_WRITE] = "owner_write", |
| 98 | [TOMOYO_MODE_OWNER_EXECUTE] = "owner_execute", |
| 99 | [TOMOYO_MODE_GROUP_READ] = "group_read", |
| 100 | [TOMOYO_MODE_GROUP_WRITE] = "group_write", |
| 101 | [TOMOYO_MODE_GROUP_EXECUTE] = "group_execute", |
| 102 | [TOMOYO_MODE_OTHERS_READ] = "others_read", |
| 103 | [TOMOYO_MODE_OTHERS_WRITE] = "others_write", |
| 104 | [TOMOYO_MODE_OTHERS_EXECUTE] = "others_execute", |
Tetsuo Handa | 2ca9bf4 | 2011-07-08 13:23:44 +0900 | [diff] [blame] | 105 | [TOMOYO_EXEC_REALPATH] = "exec.realpath", |
| 106 | [TOMOYO_SYMLINK_TARGET] = "symlink.target", |
Tetsuo Handa | 8761afd | 2011-07-08 13:22:41 +0900 | [diff] [blame] | 107 | [TOMOYO_PATH1_UID] = "path1.uid", |
| 108 | [TOMOYO_PATH1_GID] = "path1.gid", |
| 109 | [TOMOYO_PATH1_INO] = "path1.ino", |
| 110 | [TOMOYO_PATH1_MAJOR] = "path1.major", |
| 111 | [TOMOYO_PATH1_MINOR] = "path1.minor", |
| 112 | [TOMOYO_PATH1_PERM] = "path1.perm", |
| 113 | [TOMOYO_PATH1_TYPE] = "path1.type", |
| 114 | [TOMOYO_PATH1_DEV_MAJOR] = "path1.dev_major", |
| 115 | [TOMOYO_PATH1_DEV_MINOR] = "path1.dev_minor", |
| 116 | [TOMOYO_PATH2_UID] = "path2.uid", |
| 117 | [TOMOYO_PATH2_GID] = "path2.gid", |
| 118 | [TOMOYO_PATH2_INO] = "path2.ino", |
| 119 | [TOMOYO_PATH2_MAJOR] = "path2.major", |
| 120 | [TOMOYO_PATH2_MINOR] = "path2.minor", |
| 121 | [TOMOYO_PATH2_PERM] = "path2.perm", |
| 122 | [TOMOYO_PATH2_TYPE] = "path2.type", |
| 123 | [TOMOYO_PATH2_DEV_MAJOR] = "path2.dev_major", |
| 124 | [TOMOYO_PATH2_DEV_MINOR] = "path2.dev_minor", |
| 125 | [TOMOYO_PATH1_PARENT_UID] = "path1.parent.uid", |
| 126 | [TOMOYO_PATH1_PARENT_GID] = "path1.parent.gid", |
| 127 | [TOMOYO_PATH1_PARENT_INO] = "path1.parent.ino", |
| 128 | [TOMOYO_PATH1_PARENT_PERM] = "path1.parent.perm", |
| 129 | [TOMOYO_PATH2_PARENT_UID] = "path2.parent.uid", |
| 130 | [TOMOYO_PATH2_PARENT_GID] = "path2.parent.gid", |
| 131 | [TOMOYO_PATH2_PARENT_INO] = "path2.parent.ino", |
| 132 | [TOMOYO_PATH2_PARENT_PERM] = "path2.parent.perm", |
Tetsuo Handa | 2066a36 | 2011-07-08 13:21:37 +0900 | [diff] [blame] | 133 | }; |
| 134 | |
Tetsuo Handa | d5ca172 | 2011-06-26 23:18:21 +0900 | [diff] [blame] | 135 | /* String table for PREFERENCE keyword. */ |
| 136 | static const char * const tomoyo_pref_keywords[TOMOYO_MAX_PREF] = { |
Tetsuo Handa | eadd99c | 2011-06-26 23:18:58 +0900 | [diff] [blame] | 137 | [TOMOYO_PREF_MAX_AUDIT_LOG] = "max_audit_log", |
Tetsuo Handa | d5ca172 | 2011-06-26 23:18:21 +0900 | [diff] [blame] | 138 | [TOMOYO_PREF_MAX_LEARNING_ENTRY] = "max_learning_entry", |
| 139 | }; |
| 140 | |
Tetsuo Handa | 2c47ab9 | 2011-06-26 23:21:19 +0900 | [diff] [blame] | 141 | /* String table for path operation. */ |
| 142 | const char * const tomoyo_path_keyword[TOMOYO_MAX_PATH_OPERATION] = { |
| 143 | [TOMOYO_TYPE_EXECUTE] = "execute", |
| 144 | [TOMOYO_TYPE_READ] = "read", |
| 145 | [TOMOYO_TYPE_WRITE] = "write", |
| 146 | [TOMOYO_TYPE_APPEND] = "append", |
| 147 | [TOMOYO_TYPE_UNLINK] = "unlink", |
| 148 | [TOMOYO_TYPE_GETATTR] = "getattr", |
| 149 | [TOMOYO_TYPE_RMDIR] = "rmdir", |
| 150 | [TOMOYO_TYPE_TRUNCATE] = "truncate", |
| 151 | [TOMOYO_TYPE_SYMLINK] = "symlink", |
| 152 | [TOMOYO_TYPE_CHROOT] = "chroot", |
| 153 | [TOMOYO_TYPE_UMOUNT] = "unmount", |
| 154 | }; |
| 155 | |
Tetsuo Handa | 059d84d | 2011-09-10 15:23:54 +0900 | [diff] [blame] | 156 | /* String table for socket's operation. */ |
| 157 | const char * const tomoyo_socket_keyword[TOMOYO_MAX_NETWORK_OPERATION] = { |
| 158 | [TOMOYO_NETWORK_BIND] = "bind", |
| 159 | [TOMOYO_NETWORK_LISTEN] = "listen", |
| 160 | [TOMOYO_NETWORK_CONNECT] = "connect", |
| 161 | [TOMOYO_NETWORK_SEND] = "send", |
| 162 | }; |
| 163 | |
Tetsuo Handa | 2c47ab9 | 2011-06-26 23:21:19 +0900 | [diff] [blame] | 164 | /* String table for categories. */ |
| 165 | static const char * const tomoyo_category_keywords |
| 166 | [TOMOYO_MAX_MAC_CATEGORY_INDEX] = { |
Tetsuo Handa | 059d84d | 2011-09-10 15:23:54 +0900 | [diff] [blame] | 167 | [TOMOYO_MAC_CATEGORY_FILE] = "file", |
| 168 | [TOMOYO_MAC_CATEGORY_NETWORK] = "network", |
| 169 | [TOMOYO_MAC_CATEGORY_MISC] = "misc", |
Tetsuo Handa | 2c47ab9 | 2011-06-26 23:21:19 +0900 | [diff] [blame] | 170 | }; |
| 171 | |
Kentaro Takeda | 9590837 | 2009-02-05 17:18:13 +0900 | [diff] [blame] | 172 | /* Permit policy management by non-root user? */ |
| 173 | static bool tomoyo_manage_by_non_root; |
| 174 | |
| 175 | /* Utility functions. */ |
| 176 | |
Tetsuo Handa | 7762fbf | 2010-05-10 17:30:26 +0900 | [diff] [blame] | 177 | /** |
Tetsuo Handa | 57c2590 | 2010-06-03 20:38:44 +0900 | [diff] [blame] | 178 | * tomoyo_yesno - Return "yes" or "no". |
| 179 | * |
| 180 | * @value: Bool value. |
| 181 | */ |
Tetsuo Handa | eadd99c | 2011-06-26 23:18:58 +0900 | [diff] [blame] | 182 | const char *tomoyo_yesno(const unsigned int value) |
Tetsuo Handa | 57c2590 | 2010-06-03 20:38:44 +0900 | [diff] [blame] | 183 | { |
| 184 | return value ? "yes" : "no"; |
| 185 | } |
| 186 | |
Tetsuo Handa | d5ca172 | 2011-06-26 23:18:21 +0900 | [diff] [blame] | 187 | /** |
| 188 | * tomoyo_addprintf - strncat()-like-snprintf(). |
| 189 | * |
| 190 | * @buffer: Buffer to write to. Must be '\0'-terminated. |
| 191 | * @len: Size of @buffer. |
| 192 | * @fmt: The printf()'s format string, followed by parameters. |
| 193 | * |
| 194 | * Returns nothing. |
| 195 | */ |
Tetsuo Handa | f23571e | 2010-06-24 14:57:16 +0900 | [diff] [blame] | 196 | static void tomoyo_addprintf(char *buffer, int len, const char *fmt, ...) |
| 197 | { |
| 198 | va_list args; |
| 199 | const int pos = strlen(buffer); |
| 200 | va_start(args, fmt); |
| 201 | vsnprintf(buffer + pos, len - pos - 1, fmt, args); |
| 202 | va_end(args); |
| 203 | } |
| 204 | |
| 205 | /** |
| 206 | * tomoyo_flush - Flush queued string to userspace's buffer. |
| 207 | * |
| 208 | * @head: Pointer to "struct tomoyo_io_buffer". |
| 209 | * |
| 210 | * Returns true if all data was flushed, false otherwise. |
| 211 | */ |
| 212 | static bool tomoyo_flush(struct tomoyo_io_buffer *head) |
| 213 | { |
| 214 | while (head->r.w_pos) { |
| 215 | const char *w = head->r.w[0]; |
Tetsuo Handa | 2c47ab9 | 2011-06-26 23:21:19 +0900 | [diff] [blame] | 216 | size_t len = strlen(w); |
Tetsuo Handa | f23571e | 2010-06-24 14:57:16 +0900 | [diff] [blame] | 217 | if (len) { |
| 218 | if (len > head->read_user_buf_avail) |
| 219 | len = head->read_user_buf_avail; |
| 220 | if (!len) |
| 221 | return false; |
| 222 | if (copy_to_user(head->read_user_buf, w, len)) |
| 223 | return false; |
| 224 | head->read_user_buf_avail -= len; |
| 225 | head->read_user_buf += len; |
| 226 | w += len; |
| 227 | } |
Tetsuo Handa | c0fa797 | 2011-04-03 00:12:54 +0900 | [diff] [blame] | 228 | head->r.w[0] = w; |
| 229 | if (*w) |
Tetsuo Handa | f23571e | 2010-06-24 14:57:16 +0900 | [diff] [blame] | 230 | return false; |
Tetsuo Handa | eadd99c | 2011-06-26 23:18:58 +0900 | [diff] [blame] | 231 | /* Add '\0' for audit logs and query. */ |
Tetsuo Handa | f23571e | 2010-06-24 14:57:16 +0900 | [diff] [blame] | 232 | if (head->poll) { |
| 233 | if (!head->read_user_buf_avail || |
| 234 | copy_to_user(head->read_user_buf, "", 1)) |
| 235 | return false; |
| 236 | head->read_user_buf_avail--; |
| 237 | head->read_user_buf++; |
| 238 | } |
| 239 | head->r.w_pos--; |
| 240 | for (len = 0; len < head->r.w_pos; len++) |
| 241 | head->r.w[len] = head->r.w[len + 1]; |
| 242 | } |
| 243 | head->r.avail = 0; |
| 244 | return true; |
| 245 | } |
| 246 | |
| 247 | /** |
| 248 | * tomoyo_set_string - Queue string to "struct tomoyo_io_buffer" structure. |
| 249 | * |
| 250 | * @head: Pointer to "struct tomoyo_io_buffer". |
| 251 | * @string: String to print. |
| 252 | * |
| 253 | * Note that @string has to be kept valid until @head is kfree()d. |
| 254 | * This means that char[] allocated on stack memory cannot be passed to |
| 255 | * this function. Use tomoyo_io_printf() for char[] allocated on stack memory. |
| 256 | */ |
| 257 | static void tomoyo_set_string(struct tomoyo_io_buffer *head, const char *string) |
| 258 | { |
| 259 | if (head->r.w_pos < TOMOYO_MAX_IO_READ_QUEUE) { |
| 260 | head->r.w[head->r.w_pos++] = string; |
| 261 | tomoyo_flush(head); |
| 262 | } else |
| 263 | WARN_ON(1); |
| 264 | } |
| 265 | |
Tetsuo Handa | 778c4a4 | 2011-09-25 17:49:09 +0900 | [diff] [blame] | 266 | static void tomoyo_io_printf(struct tomoyo_io_buffer *head, const char *fmt, |
| 267 | ...) __printf(2, 3); |
| 268 | |
Tetsuo Handa | f23571e | 2010-06-24 14:57:16 +0900 | [diff] [blame] | 269 | /** |
| 270 | * tomoyo_io_printf - printf() to "struct tomoyo_io_buffer" structure. |
| 271 | * |
| 272 | * @head: Pointer to "struct tomoyo_io_buffer". |
| 273 | * @fmt: The printf()'s format string, followed by parameters. |
| 274 | */ |
Tetsuo Handa | 778c4a4 | 2011-09-25 17:49:09 +0900 | [diff] [blame] | 275 | static void tomoyo_io_printf(struct tomoyo_io_buffer *head, const char *fmt, |
| 276 | ...) |
Tetsuo Handa | f23571e | 2010-06-24 14:57:16 +0900 | [diff] [blame] | 277 | { |
| 278 | va_list args; |
Tetsuo Handa | 2c47ab9 | 2011-06-26 23:21:19 +0900 | [diff] [blame] | 279 | size_t len; |
| 280 | size_t pos = head->r.avail; |
Tetsuo Handa | f23571e | 2010-06-24 14:57:16 +0900 | [diff] [blame] | 281 | int size = head->readbuf_size - pos; |
| 282 | if (size <= 0) |
| 283 | return; |
| 284 | va_start(args, fmt); |
| 285 | len = vsnprintf(head->read_buf + pos, size, fmt, args) + 1; |
| 286 | va_end(args); |
| 287 | if (pos + len >= head->readbuf_size) { |
| 288 | WARN_ON(1); |
| 289 | return; |
| 290 | } |
| 291 | head->r.avail += len; |
| 292 | tomoyo_set_string(head, head->read_buf + pos); |
| 293 | } |
| 294 | |
Tetsuo Handa | 0d2171d | 2011-06-26 23:17:46 +0900 | [diff] [blame] | 295 | /** |
| 296 | * tomoyo_set_space - Put a space to "struct tomoyo_io_buffer" structure. |
| 297 | * |
| 298 | * @head: Pointer to "struct tomoyo_io_buffer". |
| 299 | * |
| 300 | * Returns nothing. |
| 301 | */ |
Tetsuo Handa | f23571e | 2010-06-24 14:57:16 +0900 | [diff] [blame] | 302 | static void tomoyo_set_space(struct tomoyo_io_buffer *head) |
| 303 | { |
| 304 | tomoyo_set_string(head, " "); |
| 305 | } |
| 306 | |
Tetsuo Handa | 0d2171d | 2011-06-26 23:17:46 +0900 | [diff] [blame] | 307 | /** |
| 308 | * tomoyo_set_lf - Put a line feed to "struct tomoyo_io_buffer" structure. |
| 309 | * |
| 310 | * @head: Pointer to "struct tomoyo_io_buffer". |
| 311 | * |
| 312 | * Returns nothing. |
| 313 | */ |
Tetsuo Handa | f23571e | 2010-06-24 14:57:16 +0900 | [diff] [blame] | 314 | static bool tomoyo_set_lf(struct tomoyo_io_buffer *head) |
| 315 | { |
| 316 | tomoyo_set_string(head, "\n"); |
| 317 | return !head->r.w_pos; |
| 318 | } |
| 319 | |
Tetsuo Handa | 57c2590 | 2010-06-03 20:38:44 +0900 | [diff] [blame] | 320 | /** |
Tetsuo Handa | 0d2171d | 2011-06-26 23:17:46 +0900 | [diff] [blame] | 321 | * tomoyo_set_slash - Put a shash to "struct tomoyo_io_buffer" structure. |
| 322 | * |
| 323 | * @head: Pointer to "struct tomoyo_io_buffer". |
| 324 | * |
| 325 | * Returns nothing. |
| 326 | */ |
| 327 | static void tomoyo_set_slash(struct tomoyo_io_buffer *head) |
| 328 | { |
| 329 | tomoyo_set_string(head, "/"); |
| 330 | } |
| 331 | |
Tetsuo Handa | bd03a3e | 2011-06-26 23:19:52 +0900 | [diff] [blame] | 332 | /* List of namespaces. */ |
| 333 | LIST_HEAD(tomoyo_namespace_list); |
| 334 | /* True if namespace other than tomoyo_kernel_namespace is defined. */ |
| 335 | static bool tomoyo_namespace_enabled; |
| 336 | |
| 337 | /** |
| 338 | * tomoyo_init_policy_namespace - Initialize namespace. |
| 339 | * |
| 340 | * @ns: Pointer to "struct tomoyo_policy_namespace". |
| 341 | * |
| 342 | * Returns nothing. |
| 343 | */ |
| 344 | void tomoyo_init_policy_namespace(struct tomoyo_policy_namespace *ns) |
| 345 | { |
| 346 | unsigned int idx; |
| 347 | for (idx = 0; idx < TOMOYO_MAX_ACL_GROUPS; idx++) |
| 348 | INIT_LIST_HEAD(&ns->acl_group[idx]); |
| 349 | for (idx = 0; idx < TOMOYO_MAX_GROUP; idx++) |
| 350 | INIT_LIST_HEAD(&ns->group_list[idx]); |
| 351 | for (idx = 0; idx < TOMOYO_MAX_POLICY; idx++) |
| 352 | INIT_LIST_HEAD(&ns->policy_list[idx]); |
Tetsuo Handa | 843d183 | 2011-09-14 17:03:19 +0900 | [diff] [blame] | 353 | ns->profile_version = 20110903; |
Tetsuo Handa | bd03a3e | 2011-06-26 23:19:52 +0900 | [diff] [blame] | 354 | tomoyo_namespace_enabled = !list_empty(&tomoyo_namespace_list); |
| 355 | list_add_tail_rcu(&ns->namespace_list, &tomoyo_namespace_list); |
| 356 | } |
| 357 | |
| 358 | /** |
| 359 | * tomoyo_print_namespace - Print namespace header. |
| 360 | * |
| 361 | * @head: Pointer to "struct tomoyo_io_buffer". |
| 362 | * |
| 363 | * Returns nothing. |
| 364 | */ |
| 365 | static void tomoyo_print_namespace(struct tomoyo_io_buffer *head) |
| 366 | { |
| 367 | if (!tomoyo_namespace_enabled) |
| 368 | return; |
| 369 | tomoyo_set_string(head, |
| 370 | container_of(head->r.ns, |
| 371 | struct tomoyo_policy_namespace, |
| 372 | namespace_list)->name); |
| 373 | tomoyo_set_space(head); |
| 374 | } |
| 375 | |
Tetsuo Handa | 0d2171d | 2011-06-26 23:17:46 +0900 | [diff] [blame] | 376 | /** |
Tetsuo Handa | 7762fbf | 2010-05-10 17:30:26 +0900 | [diff] [blame] | 377 | * tomoyo_print_name_union - Print a tomoyo_name_union. |
| 378 | * |
| 379 | * @head: Pointer to "struct tomoyo_io_buffer". |
| 380 | * @ptr: Pointer to "struct tomoyo_name_union". |
Tetsuo Handa | 7762fbf | 2010-05-10 17:30:26 +0900 | [diff] [blame] | 381 | */ |
Tetsuo Handa | f23571e | 2010-06-24 14:57:16 +0900 | [diff] [blame] | 382 | static void tomoyo_print_name_union(struct tomoyo_io_buffer *head, |
| 383 | const struct tomoyo_name_union *ptr) |
Tetsuo Handa | 7762fbf | 2010-05-10 17:30:26 +0900 | [diff] [blame] | 384 | { |
Tetsuo Handa | f23571e | 2010-06-24 14:57:16 +0900 | [diff] [blame] | 385 | tomoyo_set_space(head); |
Tetsuo Handa | 0df7e8b | 2011-06-26 23:16:36 +0900 | [diff] [blame] | 386 | if (ptr->group) { |
Tetsuo Handa | f23571e | 2010-06-24 14:57:16 +0900 | [diff] [blame] | 387 | tomoyo_set_string(head, "@"); |
| 388 | tomoyo_set_string(head, ptr->group->group_name->name); |
| 389 | } else { |
| 390 | tomoyo_set_string(head, ptr->filename->name); |
| 391 | } |
Tetsuo Handa | 7762fbf | 2010-05-10 17:30:26 +0900 | [diff] [blame] | 392 | } |
| 393 | |
| 394 | /** |
Tetsuo Handa | 2ca9bf4 | 2011-07-08 13:23:44 +0900 | [diff] [blame] | 395 | * tomoyo_print_name_union_quoted - Print a tomoyo_name_union with a quote. |
| 396 | * |
| 397 | * @head: Pointer to "struct tomoyo_io_buffer". |
| 398 | * @ptr: Pointer to "struct tomoyo_name_union". |
| 399 | * |
| 400 | * Returns nothing. |
| 401 | */ |
| 402 | static void tomoyo_print_name_union_quoted(struct tomoyo_io_buffer *head, |
| 403 | const struct tomoyo_name_union *ptr) |
| 404 | { |
| 405 | if (ptr->group) { |
| 406 | tomoyo_set_string(head, "@"); |
| 407 | tomoyo_set_string(head, ptr->group->group_name->name); |
| 408 | } else { |
| 409 | tomoyo_set_string(head, "\""); |
| 410 | tomoyo_set_string(head, ptr->filename->name); |
| 411 | tomoyo_set_string(head, "\""); |
| 412 | } |
| 413 | } |
| 414 | |
| 415 | /** |
Tetsuo Handa | 2066a36 | 2011-07-08 13:21:37 +0900 | [diff] [blame] | 416 | * tomoyo_print_number_union_nospace - Print a tomoyo_number_union without a space. |
Tetsuo Handa | 4c3e9e2 | 2010-05-17 10:06:58 +0900 | [diff] [blame] | 417 | * |
Tetsuo Handa | 2066a36 | 2011-07-08 13:21:37 +0900 | [diff] [blame] | 418 | * @head: Pointer to "struct tomoyo_io_buffer". |
| 419 | * @ptr: Pointer to "struct tomoyo_number_union". |
| 420 | * |
| 421 | * Returns nothing. |
Tetsuo Handa | 4c3e9e2 | 2010-05-17 10:06:58 +0900 | [diff] [blame] | 422 | */ |
Tetsuo Handa | 2066a36 | 2011-07-08 13:21:37 +0900 | [diff] [blame] | 423 | static void tomoyo_print_number_union_nospace |
| 424 | (struct tomoyo_io_buffer *head, const struct tomoyo_number_union *ptr) |
Tetsuo Handa | 4c3e9e2 | 2010-05-17 10:06:58 +0900 | [diff] [blame] | 425 | { |
Tetsuo Handa | 0df7e8b | 2011-06-26 23:16:36 +0900 | [diff] [blame] | 426 | if (ptr->group) { |
Tetsuo Handa | f23571e | 2010-06-24 14:57:16 +0900 | [diff] [blame] | 427 | tomoyo_set_string(head, "@"); |
| 428 | tomoyo_set_string(head, ptr->group->group_name->name); |
| 429 | } else { |
| 430 | int i; |
| 431 | unsigned long min = ptr->values[0]; |
| 432 | const unsigned long max = ptr->values[1]; |
Tetsuo Handa | 0df7e8b | 2011-06-26 23:16:36 +0900 | [diff] [blame] | 433 | u8 min_type = ptr->value_type[0]; |
| 434 | const u8 max_type = ptr->value_type[1]; |
Tetsuo Handa | f23571e | 2010-06-24 14:57:16 +0900 | [diff] [blame] | 435 | char buffer[128]; |
| 436 | buffer[0] = '\0'; |
| 437 | for (i = 0; i < 2; i++) { |
| 438 | switch (min_type) { |
| 439 | case TOMOYO_VALUE_TYPE_HEXADECIMAL: |
| 440 | tomoyo_addprintf(buffer, sizeof(buffer), |
| 441 | "0x%lX", min); |
| 442 | break; |
| 443 | case TOMOYO_VALUE_TYPE_OCTAL: |
| 444 | tomoyo_addprintf(buffer, sizeof(buffer), |
| 445 | "0%lo", min); |
| 446 | break; |
| 447 | default: |
Tetsuo Handa | 2066a36 | 2011-07-08 13:21:37 +0900 | [diff] [blame] | 448 | tomoyo_addprintf(buffer, sizeof(buffer), "%lu", |
| 449 | min); |
Tetsuo Handa | f23571e | 2010-06-24 14:57:16 +0900 | [diff] [blame] | 450 | break; |
| 451 | } |
| 452 | if (min == max && min_type == max_type) |
| 453 | break; |
| 454 | tomoyo_addprintf(buffer, sizeof(buffer), "-"); |
| 455 | min_type = max_type; |
| 456 | min = max; |
| 457 | } |
| 458 | tomoyo_io_printf(head, "%s", buffer); |
Tetsuo Handa | 4c3e9e2 | 2010-05-17 10:06:58 +0900 | [diff] [blame] | 459 | } |
Kentaro Takeda | 9590837 | 2009-02-05 17:18:13 +0900 | [diff] [blame] | 460 | } |
| 461 | |
| 462 | /** |
Tetsuo Handa | 2066a36 | 2011-07-08 13:21:37 +0900 | [diff] [blame] | 463 | * tomoyo_print_number_union - Print a tomoyo_number_union. |
| 464 | * |
| 465 | * @head: Pointer to "struct tomoyo_io_buffer". |
| 466 | * @ptr: Pointer to "struct tomoyo_number_union". |
| 467 | * |
| 468 | * Returns nothing. |
| 469 | */ |
| 470 | static void tomoyo_print_number_union(struct tomoyo_io_buffer *head, |
| 471 | const struct tomoyo_number_union *ptr) |
| 472 | { |
| 473 | tomoyo_set_space(head); |
| 474 | tomoyo_print_number_union_nospace(head, ptr); |
| 475 | } |
| 476 | |
| 477 | /** |
Tetsuo Handa | e2bf690 | 2010-06-25 11:16:00 +0900 | [diff] [blame] | 478 | * tomoyo_assign_profile - Create a new profile. |
Kentaro Takeda | 9590837 | 2009-02-05 17:18:13 +0900 | [diff] [blame] | 479 | * |
Tetsuo Handa | bd03a3e | 2011-06-26 23:19:52 +0900 | [diff] [blame] | 480 | * @ns: Pointer to "struct tomoyo_policy_namespace". |
Kentaro Takeda | 9590837 | 2009-02-05 17:18:13 +0900 | [diff] [blame] | 481 | * @profile: Profile number to create. |
| 482 | * |
| 483 | * Returns pointer to "struct tomoyo_profile" on success, NULL otherwise. |
| 484 | */ |
Tetsuo Handa | bd03a3e | 2011-06-26 23:19:52 +0900 | [diff] [blame] | 485 | static struct tomoyo_profile *tomoyo_assign_profile |
| 486 | (struct tomoyo_policy_namespace *ns, const unsigned int profile) |
Kentaro Takeda | 9590837 | 2009-02-05 17:18:13 +0900 | [diff] [blame] | 487 | { |
Tetsuo Handa | 57c2590 | 2010-06-03 20:38:44 +0900 | [diff] [blame] | 488 | struct tomoyo_profile *ptr; |
| 489 | struct tomoyo_profile *entry; |
Kentaro Takeda | 9590837 | 2009-02-05 17:18:13 +0900 | [diff] [blame] | 490 | if (profile >= TOMOYO_MAX_PROFILES) |
| 491 | return NULL; |
Tetsuo Handa | bd03a3e | 2011-06-26 23:19:52 +0900 | [diff] [blame] | 492 | ptr = ns->profile_ptr[profile]; |
Kentaro Takeda | 9590837 | 2009-02-05 17:18:13 +0900 | [diff] [blame] | 493 | if (ptr) |
Tetsuo Handa | 57c2590 | 2010-06-03 20:38:44 +0900 | [diff] [blame] | 494 | return ptr; |
| 495 | entry = kzalloc(sizeof(*entry), GFP_NOFS); |
| 496 | if (mutex_lock_interruptible(&tomoyo_policy_lock)) |
| 497 | goto out; |
Tetsuo Handa | bd03a3e | 2011-06-26 23:19:52 +0900 | [diff] [blame] | 498 | ptr = ns->profile_ptr[profile]; |
Tetsuo Handa | 57c2590 | 2010-06-03 20:38:44 +0900 | [diff] [blame] | 499 | if (!ptr && tomoyo_memory_ok(entry)) { |
| 500 | ptr = entry; |
Tetsuo Handa | eadd99c | 2011-06-26 23:18:58 +0900 | [diff] [blame] | 501 | ptr->default_config = TOMOYO_CONFIG_DISABLED | |
| 502 | TOMOYO_CONFIG_WANT_GRANT_LOG | |
| 503 | TOMOYO_CONFIG_WANT_REJECT_LOG; |
Tetsuo Handa | 57c2590 | 2010-06-03 20:38:44 +0900 | [diff] [blame] | 504 | memset(ptr->config, TOMOYO_CONFIG_USE_DEFAULT, |
| 505 | sizeof(ptr->config)); |
Tetsuo Handa | 6afcb3b | 2011-10-16 09:43:46 +0900 | [diff] [blame] | 506 | ptr->pref[TOMOYO_PREF_MAX_AUDIT_LOG] = |
| 507 | CONFIG_SECURITY_TOMOYO_MAX_AUDIT_LOG; |
| 508 | ptr->pref[TOMOYO_PREF_MAX_LEARNING_ENTRY] = |
| 509 | CONFIG_SECURITY_TOMOYO_MAX_ACCEPT_ENTRY; |
Tetsuo Handa | 57c2590 | 2010-06-03 20:38:44 +0900 | [diff] [blame] | 510 | mb(); /* Avoid out-of-order execution. */ |
Tetsuo Handa | bd03a3e | 2011-06-26 23:19:52 +0900 | [diff] [blame] | 511 | ns->profile_ptr[profile] = ptr; |
Tetsuo Handa | 57c2590 | 2010-06-03 20:38:44 +0900 | [diff] [blame] | 512 | entry = NULL; |
Tetsuo Handa | cd7bec6 | 2010-01-05 06:39:37 +0900 | [diff] [blame] | 513 | } |
Tetsuo Handa | 2928238 | 2010-05-06 00:18:15 +0900 | [diff] [blame] | 514 | mutex_unlock(&tomoyo_policy_lock); |
Tetsuo Handa | 57c2590 | 2010-06-03 20:38:44 +0900 | [diff] [blame] | 515 | out: |
| 516 | kfree(entry); |
Kentaro Takeda | 9590837 | 2009-02-05 17:18:13 +0900 | [diff] [blame] | 517 | return ptr; |
| 518 | } |
| 519 | |
| 520 | /** |
Tetsuo Handa | 57c2590 | 2010-06-03 20:38:44 +0900 | [diff] [blame] | 521 | * tomoyo_profile - Find a profile. |
| 522 | * |
Tetsuo Handa | bd03a3e | 2011-06-26 23:19:52 +0900 | [diff] [blame] | 523 | * @ns: Pointer to "struct tomoyo_policy_namespace". |
Tetsuo Handa | 57c2590 | 2010-06-03 20:38:44 +0900 | [diff] [blame] | 524 | * @profile: Profile number to find. |
| 525 | * |
| 526 | * Returns pointer to "struct tomoyo_profile". |
| 527 | */ |
Tetsuo Handa | bd03a3e | 2011-06-26 23:19:52 +0900 | [diff] [blame] | 528 | struct tomoyo_profile *tomoyo_profile(const struct tomoyo_policy_namespace *ns, |
| 529 | const u8 profile) |
Tetsuo Handa | 57c2590 | 2010-06-03 20:38:44 +0900 | [diff] [blame] | 530 | { |
Tetsuo Handa | d5ca172 | 2011-06-26 23:18:21 +0900 | [diff] [blame] | 531 | static struct tomoyo_profile tomoyo_null_profile; |
Tetsuo Handa | bd03a3e | 2011-06-26 23:19:52 +0900 | [diff] [blame] | 532 | struct tomoyo_profile *ptr = ns->profile_ptr[profile]; |
Tetsuo Handa | d5ca172 | 2011-06-26 23:18:21 +0900 | [diff] [blame] | 533 | if (!ptr) |
| 534 | ptr = &tomoyo_null_profile; |
Tetsuo Handa | 57c2590 | 2010-06-03 20:38:44 +0900 | [diff] [blame] | 535 | return ptr; |
| 536 | } |
| 537 | |
Tetsuo Handa | d5ca172 | 2011-06-26 23:18:21 +0900 | [diff] [blame] | 538 | /** |
| 539 | * tomoyo_find_yesno - Find values for specified keyword. |
| 540 | * |
| 541 | * @string: String to check. |
| 542 | * @find: Name of keyword. |
| 543 | * |
| 544 | * Returns 1 if "@find=yes" was found, 0 if "@find=no" was found, -1 otherwise. |
| 545 | */ |
Tetsuo Handa | 8e56868 | 2010-06-25 09:30:09 +0900 | [diff] [blame] | 546 | static s8 tomoyo_find_yesno(const char *string, const char *find) |
| 547 | { |
| 548 | const char *cp = strstr(string, find); |
| 549 | if (cp) { |
| 550 | cp += strlen(find); |
| 551 | if (!strncmp(cp, "=yes", 4)) |
| 552 | return 1; |
| 553 | else if (!strncmp(cp, "=no", 3)) |
| 554 | return 0; |
| 555 | } |
| 556 | return -1; |
| 557 | } |
| 558 | |
Tetsuo Handa | d5ca172 | 2011-06-26 23:18:21 +0900 | [diff] [blame] | 559 | /** |
| 560 | * tomoyo_set_uint - Set value for specified preference. |
| 561 | * |
| 562 | * @i: Pointer to "unsigned int". |
| 563 | * @string: String to check. |
| 564 | * @find: Name of keyword. |
| 565 | * |
| 566 | * Returns nothing. |
| 567 | */ |
Tetsuo Handa | 8e56868 | 2010-06-25 09:30:09 +0900 | [diff] [blame] | 568 | static void tomoyo_set_uint(unsigned int *i, const char *string, |
| 569 | const char *find) |
| 570 | { |
| 571 | const char *cp = strstr(string, find); |
| 572 | if (cp) |
| 573 | sscanf(cp + strlen(find), "=%u", i); |
| 574 | } |
| 575 | |
Tetsuo Handa | d5ca172 | 2011-06-26 23:18:21 +0900 | [diff] [blame] | 576 | /** |
| 577 | * tomoyo_set_mode - Set mode for specified profile. |
| 578 | * |
| 579 | * @name: Name of functionality. |
| 580 | * @value: Mode for @name. |
| 581 | * @profile: Pointer to "struct tomoyo_profile". |
| 582 | * |
| 583 | * Returns 0 on success, negative value otherwise. |
| 584 | */ |
Tetsuo Handa | 8e56868 | 2010-06-25 09:30:09 +0900 | [diff] [blame] | 585 | static int tomoyo_set_mode(char *name, const char *value, |
Tetsuo Handa | 8e56868 | 2010-06-25 09:30:09 +0900 | [diff] [blame] | 586 | struct tomoyo_profile *profile) |
| 587 | { |
| 588 | u8 i; |
| 589 | u8 config; |
| 590 | if (!strcmp(name, "CONFIG")) { |
| 591 | i = TOMOYO_MAX_MAC_INDEX + TOMOYO_MAX_MAC_CATEGORY_INDEX; |
| 592 | config = profile->default_config; |
| 593 | } else if (tomoyo_str_starts(&name, "CONFIG::")) { |
| 594 | config = 0; |
| 595 | for (i = 0; i < TOMOYO_MAX_MAC_INDEX |
| 596 | + TOMOYO_MAX_MAC_CATEGORY_INDEX; i++) { |
Tetsuo Handa | 2c47ab9 | 2011-06-26 23:21:19 +0900 | [diff] [blame] | 597 | int len = 0; |
| 598 | if (i < TOMOYO_MAX_MAC_INDEX) { |
| 599 | const u8 c = tomoyo_index2category[i]; |
| 600 | const char *category = |
| 601 | tomoyo_category_keywords[c]; |
| 602 | len = strlen(category); |
| 603 | if (strncmp(name, category, len) || |
| 604 | name[len++] != ':' || name[len++] != ':') |
| 605 | continue; |
| 606 | } |
| 607 | if (strcmp(name + len, tomoyo_mac_keywords[i])) |
Tetsuo Handa | 8e56868 | 2010-06-25 09:30:09 +0900 | [diff] [blame] | 608 | continue; |
| 609 | config = profile->config[i]; |
| 610 | break; |
| 611 | } |
| 612 | if (i == TOMOYO_MAX_MAC_INDEX + TOMOYO_MAX_MAC_CATEGORY_INDEX) |
| 613 | return -EINVAL; |
| 614 | } else { |
| 615 | return -EINVAL; |
| 616 | } |
Tetsuo Handa | d5ca172 | 2011-06-26 23:18:21 +0900 | [diff] [blame] | 617 | if (strstr(value, "use_default")) { |
Tetsuo Handa | 8e56868 | 2010-06-25 09:30:09 +0900 | [diff] [blame] | 618 | config = TOMOYO_CONFIG_USE_DEFAULT; |
| 619 | } else { |
| 620 | u8 mode; |
| 621 | for (mode = 0; mode < 4; mode++) |
| 622 | if (strstr(value, tomoyo_mode[mode])) |
| 623 | /* |
| 624 | * Update lower 3 bits in order to distinguish |
| 625 | * 'config' from 'TOMOYO_CONFIG_USE_DEAFULT'. |
| 626 | */ |
| 627 | config = (config & ~7) | mode; |
Tetsuo Handa | eadd99c | 2011-06-26 23:18:58 +0900 | [diff] [blame] | 628 | if (config != TOMOYO_CONFIG_USE_DEFAULT) { |
| 629 | switch (tomoyo_find_yesno(value, "grant_log")) { |
| 630 | case 1: |
| 631 | config |= TOMOYO_CONFIG_WANT_GRANT_LOG; |
| 632 | break; |
| 633 | case 0: |
| 634 | config &= ~TOMOYO_CONFIG_WANT_GRANT_LOG; |
| 635 | break; |
| 636 | } |
| 637 | switch (tomoyo_find_yesno(value, "reject_log")) { |
| 638 | case 1: |
| 639 | config |= TOMOYO_CONFIG_WANT_REJECT_LOG; |
| 640 | break; |
| 641 | case 0: |
| 642 | config &= ~TOMOYO_CONFIG_WANT_REJECT_LOG; |
| 643 | break; |
| 644 | } |
| 645 | } |
Tetsuo Handa | 8e56868 | 2010-06-25 09:30:09 +0900 | [diff] [blame] | 646 | } |
| 647 | if (i < TOMOYO_MAX_MAC_INDEX + TOMOYO_MAX_MAC_CATEGORY_INDEX) |
| 648 | profile->config[i] = config; |
| 649 | else if (config != TOMOYO_CONFIG_USE_DEFAULT) |
| 650 | profile->default_config = config; |
| 651 | return 0; |
| 652 | } |
| 653 | |
Tetsuo Handa | 57c2590 | 2010-06-03 20:38:44 +0900 | [diff] [blame] | 654 | /** |
| 655 | * tomoyo_write_profile - Write profile table. |
Kentaro Takeda | 9590837 | 2009-02-05 17:18:13 +0900 | [diff] [blame] | 656 | * |
| 657 | * @head: Pointer to "struct tomoyo_io_buffer". |
| 658 | * |
| 659 | * Returns 0 on success, negative value otherwise. |
| 660 | */ |
| 661 | static int tomoyo_write_profile(struct tomoyo_io_buffer *head) |
| 662 | { |
| 663 | char *data = head->write_buf; |
| 664 | unsigned int i; |
Kentaro Takeda | 9590837 | 2009-02-05 17:18:13 +0900 | [diff] [blame] | 665 | char *cp; |
| 666 | struct tomoyo_profile *profile; |
Tetsuo Handa | bd03a3e | 2011-06-26 23:19:52 +0900 | [diff] [blame] | 667 | if (sscanf(data, "PROFILE_VERSION=%u", &head->w.ns->profile_version) |
| 668 | == 1) |
Tetsuo Handa | 57c2590 | 2010-06-03 20:38:44 +0900 | [diff] [blame] | 669 | return 0; |
| 670 | i = simple_strtoul(data, &cp, 10); |
Tetsuo Handa | d5ca172 | 2011-06-26 23:18:21 +0900 | [diff] [blame] | 671 | if (*cp != '-') |
| 672 | return -EINVAL; |
| 673 | data = cp + 1; |
Tetsuo Handa | bd03a3e | 2011-06-26 23:19:52 +0900 | [diff] [blame] | 674 | profile = tomoyo_assign_profile(head->w.ns, i); |
Tetsuo Handa | d5ca172 | 2011-06-26 23:18:21 +0900 | [diff] [blame] | 675 | if (!profile) |
| 676 | return -EINVAL; |
Kentaro Takeda | 9590837 | 2009-02-05 17:18:13 +0900 | [diff] [blame] | 677 | cp = strchr(data, '='); |
| 678 | if (!cp) |
| 679 | return -EINVAL; |
Tetsuo Handa | 57c2590 | 2010-06-03 20:38:44 +0900 | [diff] [blame] | 680 | *cp++ = '\0'; |
Kentaro Takeda | 9590837 | 2009-02-05 17:18:13 +0900 | [diff] [blame] | 681 | if (!strcmp(data, "COMMENT")) { |
Tetsuo Handa | 2a086e5 | 2011-04-03 00:09:26 +0900 | [diff] [blame] | 682 | static DEFINE_SPINLOCK(lock); |
| 683 | const struct tomoyo_path_info *new_comment |
| 684 | = tomoyo_get_name(cp); |
| 685 | const struct tomoyo_path_info *old_comment; |
| 686 | if (!new_comment) |
| 687 | return -ENOMEM; |
| 688 | spin_lock(&lock); |
| 689 | old_comment = profile->comment; |
| 690 | profile->comment = new_comment; |
| 691 | spin_unlock(&lock); |
Tetsuo Handa | bf24fb0 | 2010-02-11 09:41:58 +0900 | [diff] [blame] | 692 | tomoyo_put_name(old_comment); |
Kentaro Takeda | 9590837 | 2009-02-05 17:18:13 +0900 | [diff] [blame] | 693 | return 0; |
| 694 | } |
Tetsuo Handa | d5ca172 | 2011-06-26 23:18:21 +0900 | [diff] [blame] | 695 | if (!strcmp(data, "PREFERENCE")) { |
| 696 | for (i = 0; i < TOMOYO_MAX_PREF; i++) |
| 697 | tomoyo_set_uint(&profile->pref[i], cp, |
| 698 | tomoyo_pref_keywords[i]); |
| 699 | return 0; |
Tetsuo Handa | f23571e | 2010-06-24 14:57:16 +0900 | [diff] [blame] | 700 | } |
Tetsuo Handa | d5ca172 | 2011-06-26 23:18:21 +0900 | [diff] [blame] | 701 | return tomoyo_set_mode(data, cp, profile); |
Tetsuo Handa | f23571e | 2010-06-24 14:57:16 +0900 | [diff] [blame] | 702 | } |
| 703 | |
Tetsuo Handa | eadd99c | 2011-06-26 23:18:58 +0900 | [diff] [blame] | 704 | /** |
| 705 | * tomoyo_print_config - Print mode for specified functionality. |
| 706 | * |
| 707 | * @head: Pointer to "struct tomoyo_io_buffer". |
| 708 | * @config: Mode for that functionality. |
| 709 | * |
| 710 | * Returns nothing. |
| 711 | * |
| 712 | * Caller prints functionality's name. |
| 713 | */ |
Tetsuo Handa | f23571e | 2010-06-24 14:57:16 +0900 | [diff] [blame] | 714 | static void tomoyo_print_config(struct tomoyo_io_buffer *head, const u8 config) |
| 715 | { |
Tetsuo Handa | eadd99c | 2011-06-26 23:18:58 +0900 | [diff] [blame] | 716 | tomoyo_io_printf(head, "={ mode=%s grant_log=%s reject_log=%s }\n", |
| 717 | tomoyo_mode[config & 3], |
| 718 | tomoyo_yesno(config & TOMOYO_CONFIG_WANT_GRANT_LOG), |
| 719 | tomoyo_yesno(config & TOMOYO_CONFIG_WANT_REJECT_LOG)); |
Tetsuo Handa | f23571e | 2010-06-24 14:57:16 +0900 | [diff] [blame] | 720 | } |
| 721 | |
Kentaro Takeda | 9590837 | 2009-02-05 17:18:13 +0900 | [diff] [blame] | 722 | /** |
Tetsuo Handa | 57c2590 | 2010-06-03 20:38:44 +0900 | [diff] [blame] | 723 | * tomoyo_read_profile - Read profile table. |
Kentaro Takeda | 9590837 | 2009-02-05 17:18:13 +0900 | [diff] [blame] | 724 | * |
| 725 | * @head: Pointer to "struct tomoyo_io_buffer". |
Tetsuo Handa | eadd99c | 2011-06-26 23:18:58 +0900 | [diff] [blame] | 726 | * |
| 727 | * Returns nothing. |
Kentaro Takeda | 9590837 | 2009-02-05 17:18:13 +0900 | [diff] [blame] | 728 | */ |
Tetsuo Handa | 8fbe71f | 2010-06-16 16:29:59 +0900 | [diff] [blame] | 729 | static void tomoyo_read_profile(struct tomoyo_io_buffer *head) |
Kentaro Takeda | 9590837 | 2009-02-05 17:18:13 +0900 | [diff] [blame] | 730 | { |
Tetsuo Handa | f23571e | 2010-06-24 14:57:16 +0900 | [diff] [blame] | 731 | u8 index; |
Tetsuo Handa | bd03a3e | 2011-06-26 23:19:52 +0900 | [diff] [blame] | 732 | struct tomoyo_policy_namespace *ns = |
| 733 | container_of(head->r.ns, typeof(*ns), namespace_list); |
Tetsuo Handa | f23571e | 2010-06-24 14:57:16 +0900 | [diff] [blame] | 734 | const struct tomoyo_profile *profile; |
Tetsuo Handa | bd03a3e | 2011-06-26 23:19:52 +0900 | [diff] [blame] | 735 | if (head->r.eof) |
| 736 | return; |
Tetsuo Handa | f23571e | 2010-06-24 14:57:16 +0900 | [diff] [blame] | 737 | next: |
| 738 | index = head->r.index; |
Tetsuo Handa | bd03a3e | 2011-06-26 23:19:52 +0900 | [diff] [blame] | 739 | profile = ns->profile_ptr[index]; |
Tetsuo Handa | f23571e | 2010-06-24 14:57:16 +0900 | [diff] [blame] | 740 | switch (head->r.step) { |
| 741 | case 0: |
Tetsuo Handa | bd03a3e | 2011-06-26 23:19:52 +0900 | [diff] [blame] | 742 | tomoyo_print_namespace(head); |
| 743 | tomoyo_io_printf(head, "PROFILE_VERSION=%u\n", |
| 744 | ns->profile_version); |
Tetsuo Handa | f23571e | 2010-06-24 14:57:16 +0900 | [diff] [blame] | 745 | head->r.step++; |
| 746 | break; |
| 747 | case 1: |
| 748 | for ( ; head->r.index < TOMOYO_MAX_PROFILES; |
| 749 | head->r.index++) |
Tetsuo Handa | bd03a3e | 2011-06-26 23:19:52 +0900 | [diff] [blame] | 750 | if (ns->profile_ptr[head->r.index]) |
Tetsuo Handa | f23571e | 2010-06-24 14:57:16 +0900 | [diff] [blame] | 751 | break; |
Tetsuo Handa | 4d81897 | 2011-08-06 23:38:30 +0900 | [diff] [blame] | 752 | if (head->r.index == TOMOYO_MAX_PROFILES) { |
| 753 | head->r.eof = true; |
Tetsuo Handa | f23571e | 2010-06-24 14:57:16 +0900 | [diff] [blame] | 754 | return; |
Tetsuo Handa | 4d81897 | 2011-08-06 23:38:30 +0900 | [diff] [blame] | 755 | } |
Tetsuo Handa | f23571e | 2010-06-24 14:57:16 +0900 | [diff] [blame] | 756 | head->r.step++; |
| 757 | break; |
| 758 | case 2: |
| 759 | { |
Tetsuo Handa | d5ca172 | 2011-06-26 23:18:21 +0900 | [diff] [blame] | 760 | u8 i; |
Tetsuo Handa | f23571e | 2010-06-24 14:57:16 +0900 | [diff] [blame] | 761 | const struct tomoyo_path_info *comment = |
| 762 | profile->comment; |
Tetsuo Handa | bd03a3e | 2011-06-26 23:19:52 +0900 | [diff] [blame] | 763 | tomoyo_print_namespace(head); |
Tetsuo Handa | f23571e | 2010-06-24 14:57:16 +0900 | [diff] [blame] | 764 | tomoyo_io_printf(head, "%u-COMMENT=", index); |
| 765 | tomoyo_set_string(head, comment ? comment->name : ""); |
| 766 | tomoyo_set_lf(head); |
Tetsuo Handa | 4d81897 | 2011-08-06 23:38:30 +0900 | [diff] [blame] | 767 | tomoyo_print_namespace(head); |
Tetsuo Handa | d5ca172 | 2011-06-26 23:18:21 +0900 | [diff] [blame] | 768 | tomoyo_io_printf(head, "%u-PREFERENCE={ ", index); |
| 769 | for (i = 0; i < TOMOYO_MAX_PREF; i++) |
| 770 | tomoyo_io_printf(head, "%s=%u ", |
| 771 | tomoyo_pref_keywords[i], |
| 772 | profile->pref[i]); |
| 773 | tomoyo_set_string(head, "}\n"); |
Tetsuo Handa | f23571e | 2010-06-24 14:57:16 +0900 | [diff] [blame] | 774 | head->r.step++; |
| 775 | } |
| 776 | break; |
| 777 | case 3: |
| 778 | { |
Tetsuo Handa | bd03a3e | 2011-06-26 23:19:52 +0900 | [diff] [blame] | 779 | tomoyo_print_namespace(head); |
Tetsuo Handa | f23571e | 2010-06-24 14:57:16 +0900 | [diff] [blame] | 780 | tomoyo_io_printf(head, "%u-%s", index, "CONFIG"); |
| 781 | tomoyo_print_config(head, profile->default_config); |
| 782 | head->r.bit = 0; |
| 783 | head->r.step++; |
| 784 | } |
| 785 | break; |
| 786 | case 4: |
| 787 | for ( ; head->r.bit < TOMOYO_MAX_MAC_INDEX |
| 788 | + TOMOYO_MAX_MAC_CATEGORY_INDEX; head->r.bit++) { |
| 789 | const u8 i = head->r.bit; |
| 790 | const u8 config = profile->config[i]; |
Tetsuo Handa | 57c2590 | 2010-06-03 20:38:44 +0900 | [diff] [blame] | 791 | if (config == TOMOYO_CONFIG_USE_DEFAULT) |
| 792 | continue; |
Tetsuo Handa | bd03a3e | 2011-06-26 23:19:52 +0900 | [diff] [blame] | 793 | tomoyo_print_namespace(head); |
Tetsuo Handa | 2c47ab9 | 2011-06-26 23:21:19 +0900 | [diff] [blame] | 794 | if (i < TOMOYO_MAX_MAC_INDEX) |
| 795 | tomoyo_io_printf(head, "%u-CONFIG::%s::%s", |
| 796 | index, |
| 797 | tomoyo_category_keywords |
| 798 | [tomoyo_index2category[i]], |
| 799 | tomoyo_mac_keywords[i]); |
| 800 | else |
| 801 | tomoyo_io_printf(head, "%u-CONFIG::%s", index, |
| 802 | tomoyo_mac_keywords[i]); |
Tetsuo Handa | f23571e | 2010-06-24 14:57:16 +0900 | [diff] [blame] | 803 | tomoyo_print_config(head, config); |
| 804 | head->r.bit++; |
| 805 | break; |
Kentaro Takeda | 9590837 | 2009-02-05 17:18:13 +0900 | [diff] [blame] | 806 | } |
Tetsuo Handa | f23571e | 2010-06-24 14:57:16 +0900 | [diff] [blame] | 807 | if (head->r.bit == TOMOYO_MAX_MAC_INDEX |
| 808 | + TOMOYO_MAX_MAC_CATEGORY_INDEX) { |
Tetsuo Handa | f23571e | 2010-06-24 14:57:16 +0900 | [diff] [blame] | 809 | head->r.index++; |
| 810 | head->r.step = 1; |
| 811 | } |
Tetsuo Handa | 57c2590 | 2010-06-03 20:38:44 +0900 | [diff] [blame] | 812 | break; |
Kentaro Takeda | 9590837 | 2009-02-05 17:18:13 +0900 | [diff] [blame] | 813 | } |
Tetsuo Handa | f23571e | 2010-06-24 14:57:16 +0900 | [diff] [blame] | 814 | if (tomoyo_flush(head)) |
| 815 | goto next; |
Kentaro Takeda | 9590837 | 2009-02-05 17:18:13 +0900 | [diff] [blame] | 816 | } |
| 817 | |
Tetsuo Handa | 0f2a55d | 2011-07-14 14:46:51 +0900 | [diff] [blame] | 818 | /** |
| 819 | * tomoyo_same_manager - Check for duplicated "struct tomoyo_manager" entry. |
| 820 | * |
| 821 | * @a: Pointer to "struct tomoyo_acl_head". |
| 822 | * @b: Pointer to "struct tomoyo_acl_head". |
| 823 | * |
| 824 | * Returns true if @a == @b, false otherwise. |
| 825 | */ |
Tetsuo Handa | e2bf690 | 2010-06-25 11:16:00 +0900 | [diff] [blame] | 826 | static bool tomoyo_same_manager(const struct tomoyo_acl_head *a, |
| 827 | const struct tomoyo_acl_head *b) |
Tetsuo Handa | 36f5e1f | 2010-06-15 09:23:26 +0900 | [diff] [blame] | 828 | { |
Tetsuo Handa | e2bf690 | 2010-06-25 11:16:00 +0900 | [diff] [blame] | 829 | return container_of(a, struct tomoyo_manager, head)->manager == |
| 830 | container_of(b, struct tomoyo_manager, head)->manager; |
Tetsuo Handa | 36f5e1f | 2010-06-15 09:23:26 +0900 | [diff] [blame] | 831 | } |
| 832 | |
Kentaro Takeda | 9590837 | 2009-02-05 17:18:13 +0900 | [diff] [blame] | 833 | /** |
| 834 | * tomoyo_update_manager_entry - Add a manager entry. |
| 835 | * |
| 836 | * @manager: The path to manager or the domainnamme. |
| 837 | * @is_delete: True if it is a delete request. |
| 838 | * |
| 839 | * Returns 0 on success, negative value otherwise. |
Tetsuo Handa | fdb8ebb | 2009-12-08 09:34:43 +0900 | [diff] [blame] | 840 | * |
| 841 | * Caller holds tomoyo_read_lock(). |
Kentaro Takeda | 9590837 | 2009-02-05 17:18:13 +0900 | [diff] [blame] | 842 | */ |
| 843 | static int tomoyo_update_manager_entry(const char *manager, |
| 844 | const bool is_delete) |
| 845 | { |
Tetsuo Handa | e2bf690 | 2010-06-25 11:16:00 +0900 | [diff] [blame] | 846 | struct tomoyo_manager e = { }; |
Tetsuo Handa | a238cf5 | 2011-06-26 23:17:10 +0900 | [diff] [blame] | 847 | struct tomoyo_acl_param param = { |
Tetsuo Handa | bd03a3e | 2011-06-26 23:19:52 +0900 | [diff] [blame] | 848 | /* .ns = &tomoyo_kernel_namespace, */ |
Tetsuo Handa | a238cf5 | 2011-06-26 23:17:10 +0900 | [diff] [blame] | 849 | .is_delete = is_delete, |
Tetsuo Handa | bd03a3e | 2011-06-26 23:19:52 +0900 | [diff] [blame] | 850 | .list = &tomoyo_kernel_namespace. |
| 851 | policy_list[TOMOYO_ID_MANAGER], |
Tetsuo Handa | a238cf5 | 2011-06-26 23:17:10 +0900 | [diff] [blame] | 852 | }; |
| 853 | int error = is_delete ? -ENOENT : -ENOMEM; |
Tetsuo Handa | 77b513d | 2012-05-13 23:03:23 +0900 | [diff] [blame] | 854 | if (!tomoyo_correct_domain(manager) && |
| 855 | !tomoyo_correct_word(manager)) |
| 856 | return -EINVAL; |
Tetsuo Handa | 9e4b50e | 2010-05-06 12:40:02 +0900 | [diff] [blame] | 857 | e.manager = tomoyo_get_name(manager); |
Tetsuo Handa | a238cf5 | 2011-06-26 23:17:10 +0900 | [diff] [blame] | 858 | if (e.manager) { |
| 859 | error = tomoyo_update_policy(&e.head, sizeof(e), ¶m, |
| 860 | tomoyo_same_manager); |
| 861 | tomoyo_put_name(e.manager); |
| 862 | } |
Kentaro Takeda | 9590837 | 2009-02-05 17:18:13 +0900 | [diff] [blame] | 863 | return error; |
| 864 | } |
| 865 | |
| 866 | /** |
Tetsuo Handa | e2bf690 | 2010-06-25 11:16:00 +0900 | [diff] [blame] | 867 | * tomoyo_write_manager - Write manager policy. |
Kentaro Takeda | 9590837 | 2009-02-05 17:18:13 +0900 | [diff] [blame] | 868 | * |
| 869 | * @head: Pointer to "struct tomoyo_io_buffer". |
| 870 | * |
| 871 | * Returns 0 on success, negative value otherwise. |
Tetsuo Handa | fdb8ebb | 2009-12-08 09:34:43 +0900 | [diff] [blame] | 872 | * |
| 873 | * Caller holds tomoyo_read_lock(). |
Kentaro Takeda | 9590837 | 2009-02-05 17:18:13 +0900 | [diff] [blame] | 874 | */ |
Tetsuo Handa | e2bf690 | 2010-06-25 11:16:00 +0900 | [diff] [blame] | 875 | static int tomoyo_write_manager(struct tomoyo_io_buffer *head) |
Kentaro Takeda | 9590837 | 2009-02-05 17:18:13 +0900 | [diff] [blame] | 876 | { |
| 877 | char *data = head->write_buf; |
Kentaro Takeda | 9590837 | 2009-02-05 17:18:13 +0900 | [diff] [blame] | 878 | |
| 879 | if (!strcmp(data, "manage_by_non_root")) { |
Tetsuo Handa | bd03a3e | 2011-06-26 23:19:52 +0900 | [diff] [blame] | 880 | tomoyo_manage_by_non_root = !head->w.is_delete; |
Kentaro Takeda | 9590837 | 2009-02-05 17:18:13 +0900 | [diff] [blame] | 881 | return 0; |
| 882 | } |
Tetsuo Handa | bd03a3e | 2011-06-26 23:19:52 +0900 | [diff] [blame] | 883 | return tomoyo_update_manager_entry(data, head->w.is_delete); |
Kentaro Takeda | 9590837 | 2009-02-05 17:18:13 +0900 | [diff] [blame] | 884 | } |
| 885 | |
| 886 | /** |
Tetsuo Handa | e2bf690 | 2010-06-25 11:16:00 +0900 | [diff] [blame] | 887 | * tomoyo_read_manager - Read manager policy. |
Kentaro Takeda | 9590837 | 2009-02-05 17:18:13 +0900 | [diff] [blame] | 888 | * |
| 889 | * @head: Pointer to "struct tomoyo_io_buffer". |
| 890 | * |
Tetsuo Handa | fdb8ebb | 2009-12-08 09:34:43 +0900 | [diff] [blame] | 891 | * Caller holds tomoyo_read_lock(). |
Kentaro Takeda | 9590837 | 2009-02-05 17:18:13 +0900 | [diff] [blame] | 892 | */ |
Tetsuo Handa | e2bf690 | 2010-06-25 11:16:00 +0900 | [diff] [blame] | 893 | static void tomoyo_read_manager(struct tomoyo_io_buffer *head) |
Kentaro Takeda | 9590837 | 2009-02-05 17:18:13 +0900 | [diff] [blame] | 894 | { |
Tetsuo Handa | f23571e | 2010-06-24 14:57:16 +0900 | [diff] [blame] | 895 | if (head->r.eof) |
Tetsuo Handa | 8fbe71f | 2010-06-16 16:29:59 +0900 | [diff] [blame] | 896 | return; |
Tetsuo Handa | bd03a3e | 2011-06-26 23:19:52 +0900 | [diff] [blame] | 897 | list_for_each_cookie(head->r.acl, &tomoyo_kernel_namespace. |
| 898 | policy_list[TOMOYO_ID_MANAGER]) { |
Tetsuo Handa | e2bf690 | 2010-06-25 11:16:00 +0900 | [diff] [blame] | 899 | struct tomoyo_manager *ptr = |
Tetsuo Handa | f23571e | 2010-06-24 14:57:16 +0900 | [diff] [blame] | 900 | list_entry(head->r.acl, typeof(*ptr), head.list); |
Tetsuo Handa | 82e0f00 | 2010-06-15 09:22:42 +0900 | [diff] [blame] | 901 | if (ptr->head.is_deleted) |
Kentaro Takeda | 9590837 | 2009-02-05 17:18:13 +0900 | [diff] [blame] | 902 | continue; |
Tetsuo Handa | f23571e | 2010-06-24 14:57:16 +0900 | [diff] [blame] | 903 | if (!tomoyo_flush(head)) |
| 904 | return; |
| 905 | tomoyo_set_string(head, ptr->manager->name); |
| 906 | tomoyo_set_lf(head); |
Kentaro Takeda | 9590837 | 2009-02-05 17:18:13 +0900 | [diff] [blame] | 907 | } |
Tetsuo Handa | f23571e | 2010-06-24 14:57:16 +0900 | [diff] [blame] | 908 | head->r.eof = true; |
Kentaro Takeda | 9590837 | 2009-02-05 17:18:13 +0900 | [diff] [blame] | 909 | } |
| 910 | |
| 911 | /** |
Tetsuo Handa | e2bf690 | 2010-06-25 11:16:00 +0900 | [diff] [blame] | 912 | * tomoyo_manager - Check whether the current process is a policy manager. |
Kentaro Takeda | 9590837 | 2009-02-05 17:18:13 +0900 | [diff] [blame] | 913 | * |
| 914 | * Returns true if the current process is permitted to modify policy |
| 915 | * via /sys/kernel/security/tomoyo/ interface. |
Tetsuo Handa | fdb8ebb | 2009-12-08 09:34:43 +0900 | [diff] [blame] | 916 | * |
| 917 | * Caller holds tomoyo_read_lock(). |
Kentaro Takeda | 9590837 | 2009-02-05 17:18:13 +0900 | [diff] [blame] | 918 | */ |
Tetsuo Handa | e2bf690 | 2010-06-25 11:16:00 +0900 | [diff] [blame] | 919 | static bool tomoyo_manager(void) |
Kentaro Takeda | 9590837 | 2009-02-05 17:18:13 +0900 | [diff] [blame] | 920 | { |
Tetsuo Handa | e2bf690 | 2010-06-25 11:16:00 +0900 | [diff] [blame] | 921 | struct tomoyo_manager *ptr; |
Kentaro Takeda | 9590837 | 2009-02-05 17:18:13 +0900 | [diff] [blame] | 922 | const char *exe; |
| 923 | const struct task_struct *task = current; |
| 924 | const struct tomoyo_path_info *domainname = tomoyo_domain()->domainname; |
| 925 | bool found = false; |
| 926 | |
| 927 | if (!tomoyo_policy_loaded) |
| 928 | return true; |
Eric W. Biederman | 609fcd1b | 2012-02-07 16:34:10 -0800 | [diff] [blame] | 929 | if (!tomoyo_manage_by_non_root && |
| 930 | (!uid_eq(task->cred->uid, GLOBAL_ROOT_UID) || |
| 931 | !uid_eq(task->cred->euid, GLOBAL_ROOT_UID))) |
Kentaro Takeda | 9590837 | 2009-02-05 17:18:13 +0900 | [diff] [blame] | 932 | return false; |
Kentaro Takeda | 9590837 | 2009-02-05 17:18:13 +0900 | [diff] [blame] | 933 | exe = tomoyo_get_exe(); |
| 934 | if (!exe) |
| 935 | return false; |
Tetsuo Handa | bd03a3e | 2011-06-26 23:19:52 +0900 | [diff] [blame] | 936 | list_for_each_entry_rcu(ptr, &tomoyo_kernel_namespace. |
| 937 | policy_list[TOMOYO_ID_MANAGER], head.list) { |
Tetsuo Handa | 77b513d | 2012-05-13 23:03:23 +0900 | [diff] [blame] | 938 | if (!ptr->head.is_deleted && |
| 939 | (!tomoyo_pathcmp(domainname, ptr->manager) || |
| 940 | !strcmp(exe, ptr->manager->name))) { |
Kentaro Takeda | 9590837 | 2009-02-05 17:18:13 +0900 | [diff] [blame] | 941 | found = true; |
| 942 | break; |
| 943 | } |
| 944 | } |
Kentaro Takeda | 9590837 | 2009-02-05 17:18:13 +0900 | [diff] [blame] | 945 | if (!found) { /* Reduce error messages. */ |
| 946 | static pid_t last_pid; |
| 947 | const pid_t pid = current->pid; |
| 948 | if (last_pid != pid) { |
| 949 | printk(KERN_WARNING "%s ( %s ) is not permitted to " |
| 950 | "update policies.\n", domainname->name, exe); |
| 951 | last_pid = pid; |
| 952 | } |
| 953 | } |
Tetsuo Handa | 8e2d39a | 2010-01-26 20:45:27 +0900 | [diff] [blame] | 954 | kfree(exe); |
Kentaro Takeda | 9590837 | 2009-02-05 17:18:13 +0900 | [diff] [blame] | 955 | return found; |
| 956 | } |
| 957 | |
Tetsuo Handa | 59df316 | 2011-10-20 06:48:57 +0900 | [diff] [blame] | 958 | static struct tomoyo_domain_info *tomoyo_find_domain_by_qid |
| 959 | (unsigned int serial); |
| 960 | |
Kentaro Takeda | 9590837 | 2009-02-05 17:18:13 +0900 | [diff] [blame] | 961 | /** |
Tetsuo Handa | bd03a3e | 2011-06-26 23:19:52 +0900 | [diff] [blame] | 962 | * tomoyo_select_domain - Parse select command. |
Kentaro Takeda | 9590837 | 2009-02-05 17:18:13 +0900 | [diff] [blame] | 963 | * |
| 964 | * @head: Pointer to "struct tomoyo_io_buffer". |
| 965 | * @data: String to parse. |
| 966 | * |
| 967 | * Returns true on success, false otherwise. |
Tetsuo Handa | fdb8ebb | 2009-12-08 09:34:43 +0900 | [diff] [blame] | 968 | * |
| 969 | * Caller holds tomoyo_read_lock(). |
Kentaro Takeda | 9590837 | 2009-02-05 17:18:13 +0900 | [diff] [blame] | 970 | */ |
Tetsuo Handa | bd03a3e | 2011-06-26 23:19:52 +0900 | [diff] [blame] | 971 | static bool tomoyo_select_domain(struct tomoyo_io_buffer *head, |
| 972 | const char *data) |
Kentaro Takeda | 9590837 | 2009-02-05 17:18:13 +0900 | [diff] [blame] | 973 | { |
| 974 | unsigned int pid; |
| 975 | struct tomoyo_domain_info *domain = NULL; |
Tetsuo Handa | 9b244373 | 2010-06-03 20:35:53 +0900 | [diff] [blame] | 976 | bool global_pid = false; |
Tetsuo Handa | bd03a3e | 2011-06-26 23:19:52 +0900 | [diff] [blame] | 977 | if (strncmp(data, "select ", 7)) |
| 978 | return false; |
| 979 | data += 7; |
Tetsuo Handa | 9b244373 | 2010-06-03 20:35:53 +0900 | [diff] [blame] | 980 | if (sscanf(data, "pid=%u", &pid) == 1 || |
| 981 | (global_pid = true, sscanf(data, "global-pid=%u", &pid) == 1)) { |
Kentaro Takeda | 9590837 | 2009-02-05 17:18:13 +0900 | [diff] [blame] | 982 | struct task_struct *p; |
Tetsuo Handa | 1fcdc7c | 2010-02-25 17:19:25 +0900 | [diff] [blame] | 983 | rcu_read_lock(); |
Tetsuo Handa | 9b244373 | 2010-06-03 20:35:53 +0900 | [diff] [blame] | 984 | if (global_pid) |
| 985 | p = find_task_by_pid_ns(pid, &init_pid_ns); |
| 986 | else |
| 987 | p = find_task_by_vpid(pid); |
Kentaro Takeda | 9590837 | 2009-02-05 17:18:13 +0900 | [diff] [blame] | 988 | if (p) |
| 989 | domain = tomoyo_real_domain(p); |
Tetsuo Handa | 1fcdc7c | 2010-02-25 17:19:25 +0900 | [diff] [blame] | 990 | rcu_read_unlock(); |
Kentaro Takeda | 9590837 | 2009-02-05 17:18:13 +0900 | [diff] [blame] | 991 | } else if (!strncmp(data, "domain=", 7)) { |
Tetsuo Handa | 7509315 | 2010-06-16 16:23:55 +0900 | [diff] [blame] | 992 | if (tomoyo_domain_def(data + 7)) |
Kentaro Takeda | 9590837 | 2009-02-05 17:18:13 +0900 | [diff] [blame] | 993 | domain = tomoyo_find_domain(data + 7); |
Tetsuo Handa | 59df316 | 2011-10-20 06:48:57 +0900 | [diff] [blame] | 994 | } else if (sscanf(data, "Q=%u", &pid) == 1) { |
| 995 | domain = tomoyo_find_domain_by_qid(pid); |
Kentaro Takeda | 9590837 | 2009-02-05 17:18:13 +0900 | [diff] [blame] | 996 | } else |
| 997 | return false; |
Tetsuo Handa | 0df7e8b | 2011-06-26 23:16:36 +0900 | [diff] [blame] | 998 | head->w.domain = domain; |
Kentaro Takeda | 9590837 | 2009-02-05 17:18:13 +0900 | [diff] [blame] | 999 | /* Accessing read_buf is safe because head->io_sem is held. */ |
| 1000 | if (!head->read_buf) |
| 1001 | return true; /* Do nothing if open(O_WRONLY). */ |
Tetsuo Handa | f23571e | 2010-06-24 14:57:16 +0900 | [diff] [blame] | 1002 | memset(&head->r, 0, sizeof(head->r)); |
| 1003 | head->r.print_this_domain_only = true; |
Dan Carpenter | 68eda8f | 2010-08-08 00:17:51 +0200 | [diff] [blame] | 1004 | if (domain) |
| 1005 | head->r.domain = &domain->list; |
| 1006 | else |
| 1007 | head->r.eof = 1; |
Kentaro Takeda | 9590837 | 2009-02-05 17:18:13 +0900 | [diff] [blame] | 1008 | tomoyo_io_printf(head, "# select %s\n", data); |
Tetsuo Handa | 475e6fa | 2010-06-24 11:28:14 +0900 | [diff] [blame] | 1009 | if (domain && domain->is_deleted) |
| 1010 | tomoyo_io_printf(head, "# This is a deleted domain.\n"); |
Kentaro Takeda | 9590837 | 2009-02-05 17:18:13 +0900 | [diff] [blame] | 1011 | return true; |
| 1012 | } |
| 1013 | |
| 1014 | /** |
Tetsuo Handa | 731d37a | 2011-09-10 15:25:58 +0900 | [diff] [blame] | 1015 | * tomoyo_same_task_acl - Check for duplicated "struct tomoyo_task_acl" entry. |
| 1016 | * |
| 1017 | * @a: Pointer to "struct tomoyo_acl_info". |
| 1018 | * @b: Pointer to "struct tomoyo_acl_info". |
| 1019 | * |
| 1020 | * Returns true if @a == @b, false otherwise. |
| 1021 | */ |
| 1022 | static bool tomoyo_same_task_acl(const struct tomoyo_acl_info *a, |
| 1023 | const struct tomoyo_acl_info *b) |
| 1024 | { |
| 1025 | const struct tomoyo_task_acl *p1 = container_of(a, typeof(*p1), head); |
| 1026 | const struct tomoyo_task_acl *p2 = container_of(b, typeof(*p2), head); |
| 1027 | return p1->domainname == p2->domainname; |
| 1028 | } |
| 1029 | |
| 1030 | /** |
| 1031 | * tomoyo_write_task - Update task related list. |
| 1032 | * |
| 1033 | * @param: Pointer to "struct tomoyo_acl_param". |
| 1034 | * |
| 1035 | * Returns 0 on success, negative value otherwise. |
| 1036 | * |
| 1037 | * Caller holds tomoyo_read_lock(). |
| 1038 | */ |
| 1039 | static int tomoyo_write_task(struct tomoyo_acl_param *param) |
| 1040 | { |
| 1041 | int error = -EINVAL; |
| 1042 | if (tomoyo_str_starts(¶m->data, "manual_domain_transition ")) { |
| 1043 | struct tomoyo_task_acl e = { |
| 1044 | .head.type = TOMOYO_TYPE_MANUAL_TASK_ACL, |
| 1045 | .domainname = tomoyo_get_domainname(param), |
| 1046 | }; |
| 1047 | if (e.domainname) |
| 1048 | error = tomoyo_update_domain(&e.head, sizeof(e), param, |
| 1049 | tomoyo_same_task_acl, |
| 1050 | NULL); |
| 1051 | tomoyo_put_name(e.domainname); |
| 1052 | } |
| 1053 | return error; |
| 1054 | } |
| 1055 | |
| 1056 | /** |
Tetsuo Handa | ccf135f | 2009-06-19 10:29:34 +0900 | [diff] [blame] | 1057 | * tomoyo_delete_domain - Delete a domain. |
| 1058 | * |
| 1059 | * @domainname: The name of domain. |
| 1060 | * |
Tetsuo Handa | 7d7473d | 2012-03-17 20:33:38 +0900 | [diff] [blame] | 1061 | * Returns 0 on success, negative value otherwise. |
Tetsuo Handa | fdb8ebb | 2009-12-08 09:34:43 +0900 | [diff] [blame] | 1062 | * |
| 1063 | * Caller holds tomoyo_read_lock(). |
Tetsuo Handa | ccf135f | 2009-06-19 10:29:34 +0900 | [diff] [blame] | 1064 | */ |
| 1065 | static int tomoyo_delete_domain(char *domainname) |
| 1066 | { |
| 1067 | struct tomoyo_domain_info *domain; |
| 1068 | struct tomoyo_path_info name; |
| 1069 | |
| 1070 | name.name = domainname; |
| 1071 | tomoyo_fill_path_info(&name); |
Tetsuo Handa | 2928238 | 2010-05-06 00:18:15 +0900 | [diff] [blame] | 1072 | if (mutex_lock_interruptible(&tomoyo_policy_lock)) |
Tetsuo Handa | 7d7473d | 2012-03-17 20:33:38 +0900 | [diff] [blame] | 1073 | return -EINTR; |
Tetsuo Handa | ccf135f | 2009-06-19 10:29:34 +0900 | [diff] [blame] | 1074 | /* Is there an active domain? */ |
Tetsuo Handa | fdb8ebb | 2009-12-08 09:34:43 +0900 | [diff] [blame] | 1075 | list_for_each_entry_rcu(domain, &tomoyo_domain_list, list) { |
Tetsuo Handa | ccf135f | 2009-06-19 10:29:34 +0900 | [diff] [blame] | 1076 | /* Never delete tomoyo_kernel_domain */ |
| 1077 | if (domain == &tomoyo_kernel_domain) |
| 1078 | continue; |
| 1079 | if (domain->is_deleted || |
| 1080 | tomoyo_pathcmp(domain->domainname, &name)) |
| 1081 | continue; |
| 1082 | domain->is_deleted = true; |
| 1083 | break; |
| 1084 | } |
Tetsuo Handa | f737d95 | 2010-01-03 21:16:32 +0900 | [diff] [blame] | 1085 | mutex_unlock(&tomoyo_policy_lock); |
Tetsuo Handa | ccf135f | 2009-06-19 10:29:34 +0900 | [diff] [blame] | 1086 | return 0; |
| 1087 | } |
| 1088 | |
| 1089 | /** |
Tetsuo Handa | e2bf690 | 2010-06-25 11:16:00 +0900 | [diff] [blame] | 1090 | * tomoyo_write_domain2 - Write domain policy. |
Tetsuo Handa | 17fcfbd | 2010-05-17 10:11:36 +0900 | [diff] [blame] | 1091 | * |
Tetsuo Handa | bd03a3e | 2011-06-26 23:19:52 +0900 | [diff] [blame] | 1092 | * @ns: Pointer to "struct tomoyo_policy_namespace". |
Tetsuo Handa | a238cf5 | 2011-06-26 23:17:10 +0900 | [diff] [blame] | 1093 | * @list: Pointer to "struct list_head". |
| 1094 | * @data: Policy to be interpreted. |
| 1095 | * @is_delete: True if it is a delete request. |
Tetsuo Handa | 17fcfbd | 2010-05-17 10:11:36 +0900 | [diff] [blame] | 1096 | * |
| 1097 | * Returns 0 on success, negative value otherwise. |
| 1098 | * |
| 1099 | * Caller holds tomoyo_read_lock(). |
| 1100 | */ |
Tetsuo Handa | bd03a3e | 2011-06-26 23:19:52 +0900 | [diff] [blame] | 1101 | static int tomoyo_write_domain2(struct tomoyo_policy_namespace *ns, |
| 1102 | struct list_head *list, char *data, |
Tetsuo Handa | e2bf690 | 2010-06-25 11:16:00 +0900 | [diff] [blame] | 1103 | const bool is_delete) |
Tetsuo Handa | 17fcfbd | 2010-05-17 10:11:36 +0900 | [diff] [blame] | 1104 | { |
Tetsuo Handa | a238cf5 | 2011-06-26 23:17:10 +0900 | [diff] [blame] | 1105 | struct tomoyo_acl_param param = { |
Tetsuo Handa | bd03a3e | 2011-06-26 23:19:52 +0900 | [diff] [blame] | 1106 | .ns = ns, |
Tetsuo Handa | a238cf5 | 2011-06-26 23:17:10 +0900 | [diff] [blame] | 1107 | .list = list, |
| 1108 | .data = data, |
| 1109 | .is_delete = is_delete, |
| 1110 | }; |
| 1111 | static const struct { |
| 1112 | const char *keyword; |
| 1113 | int (*write) (struct tomoyo_acl_param *); |
Tetsuo Handa | 731d37a | 2011-09-10 15:25:58 +0900 | [diff] [blame] | 1114 | } tomoyo_callback[5] = { |
Tetsuo Handa | a238cf5 | 2011-06-26 23:17:10 +0900 | [diff] [blame] | 1115 | { "file ", tomoyo_write_file }, |
Tetsuo Handa | 059d84d | 2011-09-10 15:23:54 +0900 | [diff] [blame] | 1116 | { "network inet ", tomoyo_write_inet_network }, |
| 1117 | { "network unix ", tomoyo_write_unix_network }, |
Tetsuo Handa | d58e0da | 2011-09-10 15:22:48 +0900 | [diff] [blame] | 1118 | { "misc ", tomoyo_write_misc }, |
Tetsuo Handa | 731d37a | 2011-09-10 15:25:58 +0900 | [diff] [blame] | 1119 | { "task ", tomoyo_write_task }, |
Tetsuo Handa | a238cf5 | 2011-06-26 23:17:10 +0900 | [diff] [blame] | 1120 | }; |
| 1121 | u8 i; |
Tetsuo Handa | d58e0da | 2011-09-10 15:22:48 +0900 | [diff] [blame] | 1122 | |
| 1123 | for (i = 0; i < ARRAY_SIZE(tomoyo_callback); i++) { |
Tetsuo Handa | a238cf5 | 2011-06-26 23:17:10 +0900 | [diff] [blame] | 1124 | if (!tomoyo_str_starts(¶m.data, |
| 1125 | tomoyo_callback[i].keyword)) |
| 1126 | continue; |
| 1127 | return tomoyo_callback[i].write(¶m); |
| 1128 | } |
| 1129 | return -EINVAL; |
Tetsuo Handa | 17fcfbd | 2010-05-17 10:11:36 +0900 | [diff] [blame] | 1130 | } |
| 1131 | |
Tetsuo Handa | 2c47ab9 | 2011-06-26 23:21:19 +0900 | [diff] [blame] | 1132 | /* String table for domain flags. */ |
| 1133 | const char * const tomoyo_dif[TOMOYO_MAX_DOMAIN_INFO_FLAGS] = { |
| 1134 | [TOMOYO_DIF_QUOTA_WARNED] = "quota_exceeded\n", |
| 1135 | [TOMOYO_DIF_TRANSITION_FAILED] = "transition_failed\n", |
| 1136 | }; |
| 1137 | |
Tetsuo Handa | 17fcfbd | 2010-05-17 10:11:36 +0900 | [diff] [blame] | 1138 | /** |
Tetsuo Handa | e2bf690 | 2010-06-25 11:16:00 +0900 | [diff] [blame] | 1139 | * tomoyo_write_domain - Write domain policy. |
Kentaro Takeda | 9590837 | 2009-02-05 17:18:13 +0900 | [diff] [blame] | 1140 | * |
| 1141 | * @head: Pointer to "struct tomoyo_io_buffer". |
| 1142 | * |
| 1143 | * Returns 0 on success, negative value otherwise. |
Tetsuo Handa | fdb8ebb | 2009-12-08 09:34:43 +0900 | [diff] [blame] | 1144 | * |
| 1145 | * Caller holds tomoyo_read_lock(). |
Kentaro Takeda | 9590837 | 2009-02-05 17:18:13 +0900 | [diff] [blame] | 1146 | */ |
Tetsuo Handa | e2bf690 | 2010-06-25 11:16:00 +0900 | [diff] [blame] | 1147 | static int tomoyo_write_domain(struct tomoyo_io_buffer *head) |
Kentaro Takeda | 9590837 | 2009-02-05 17:18:13 +0900 | [diff] [blame] | 1148 | { |
| 1149 | char *data = head->write_buf; |
Tetsuo Handa | bd03a3e | 2011-06-26 23:19:52 +0900 | [diff] [blame] | 1150 | struct tomoyo_policy_namespace *ns; |
Tetsuo Handa | 0df7e8b | 2011-06-26 23:16:36 +0900 | [diff] [blame] | 1151 | struct tomoyo_domain_info *domain = head->w.domain; |
Tetsuo Handa | bd03a3e | 2011-06-26 23:19:52 +0900 | [diff] [blame] | 1152 | const bool is_delete = head->w.is_delete; |
| 1153 | bool is_select = !is_delete && tomoyo_str_starts(&data, "select "); |
Kentaro Takeda | 9590837 | 2009-02-05 17:18:13 +0900 | [diff] [blame] | 1154 | unsigned int profile; |
Tetsuo Handa | bd03a3e | 2011-06-26 23:19:52 +0900 | [diff] [blame] | 1155 | if (*data == '<') { |
Tetsuo Handa | 7d7473d | 2012-03-17 20:33:38 +0900 | [diff] [blame] | 1156 | int ret = 0; |
Kentaro Takeda | 9590837 | 2009-02-05 17:18:13 +0900 | [diff] [blame] | 1157 | domain = NULL; |
| 1158 | if (is_delete) |
Tetsuo Handa | 7d7473d | 2012-03-17 20:33:38 +0900 | [diff] [blame] | 1159 | ret = tomoyo_delete_domain(data); |
Tetsuo Handa | fdb8ebb | 2009-12-08 09:34:43 +0900 | [diff] [blame] | 1160 | else if (is_select) |
Kentaro Takeda | 9590837 | 2009-02-05 17:18:13 +0900 | [diff] [blame] | 1161 | domain = tomoyo_find_domain(data); |
Tetsuo Handa | fdb8ebb | 2009-12-08 09:34:43 +0900 | [diff] [blame] | 1162 | else |
Tetsuo Handa | bd03a3e | 2011-06-26 23:19:52 +0900 | [diff] [blame] | 1163 | domain = tomoyo_assign_domain(data, false); |
Tetsuo Handa | 0df7e8b | 2011-06-26 23:16:36 +0900 | [diff] [blame] | 1164 | head->w.domain = domain; |
Tetsuo Handa | 7d7473d | 2012-03-17 20:33:38 +0900 | [diff] [blame] | 1165 | return ret; |
Kentaro Takeda | 9590837 | 2009-02-05 17:18:13 +0900 | [diff] [blame] | 1166 | } |
| 1167 | if (!domain) |
| 1168 | return -EINVAL; |
Tetsuo Handa | bd03a3e | 2011-06-26 23:19:52 +0900 | [diff] [blame] | 1169 | ns = domain->ns; |
Tetsuo Handa | b5bc60b | 2011-06-26 23:16:03 +0900 | [diff] [blame] | 1170 | if (sscanf(data, "use_profile %u", &profile) == 1 |
Kentaro Takeda | 9590837 | 2009-02-05 17:18:13 +0900 | [diff] [blame] | 1171 | && profile < TOMOYO_MAX_PROFILES) { |
Tetsuo Handa | bd03a3e | 2011-06-26 23:19:52 +0900 | [diff] [blame] | 1172 | if (!tomoyo_policy_loaded || ns->profile_ptr[profile]) |
Kentaro Takeda | 9590837 | 2009-02-05 17:18:13 +0900 | [diff] [blame] | 1173 | domain->profile = (u8) profile; |
| 1174 | return 0; |
| 1175 | } |
Tetsuo Handa | 3299714 | 2011-06-26 23:19:28 +0900 | [diff] [blame] | 1176 | if (sscanf(data, "use_group %u\n", &profile) == 1 |
| 1177 | && profile < TOMOYO_MAX_ACL_GROUPS) { |
| 1178 | if (!is_delete) |
| 1179 | domain->group = (u8) profile; |
| 1180 | return 0; |
| 1181 | } |
Tetsuo Handa | 2c47ab9 | 2011-06-26 23:21:19 +0900 | [diff] [blame] | 1182 | for (profile = 0; profile < TOMOYO_MAX_DOMAIN_INFO_FLAGS; profile++) { |
| 1183 | const char *cp = tomoyo_dif[profile]; |
| 1184 | if (strncmp(data, cp, strlen(cp) - 1)) |
| 1185 | continue; |
| 1186 | domain->flags[profile] = !is_delete; |
Tetsuo Handa | 9b244373 | 2010-06-03 20:35:53 +0900 | [diff] [blame] | 1187 | return 0; |
| 1188 | } |
Tetsuo Handa | bd03a3e | 2011-06-26 23:19:52 +0900 | [diff] [blame] | 1189 | return tomoyo_write_domain2(ns, &domain->acl_info_list, data, |
| 1190 | is_delete); |
Kentaro Takeda | 9590837 | 2009-02-05 17:18:13 +0900 | [diff] [blame] | 1191 | } |
| 1192 | |
| 1193 | /** |
Tetsuo Handa | 2066a36 | 2011-07-08 13:21:37 +0900 | [diff] [blame] | 1194 | * tomoyo_print_condition - Print condition part. |
| 1195 | * |
| 1196 | * @head: Pointer to "struct tomoyo_io_buffer". |
| 1197 | * @cond: Pointer to "struct tomoyo_condition". |
| 1198 | * |
| 1199 | * Returns true on success, false otherwise. |
| 1200 | */ |
| 1201 | static bool tomoyo_print_condition(struct tomoyo_io_buffer *head, |
| 1202 | const struct tomoyo_condition *cond) |
| 1203 | { |
| 1204 | switch (head->r.cond_step) { |
| 1205 | case 0: |
| 1206 | head->r.cond_index = 0; |
| 1207 | head->r.cond_step++; |
Tetsuo Handa | 6bce98e | 2011-09-16 22:54:25 +0900 | [diff] [blame] | 1208 | if (cond->transit) { |
| 1209 | tomoyo_set_space(head); |
| 1210 | tomoyo_set_string(head, cond->transit->name); |
| 1211 | } |
Tetsuo Handa | 2066a36 | 2011-07-08 13:21:37 +0900 | [diff] [blame] | 1212 | /* fall through */ |
| 1213 | case 1: |
| 1214 | { |
| 1215 | const u16 condc = cond->condc; |
| 1216 | const struct tomoyo_condition_element *condp = |
| 1217 | (typeof(condp)) (cond + 1); |
| 1218 | const struct tomoyo_number_union *numbers_p = |
| 1219 | (typeof(numbers_p)) (condp + condc); |
Tetsuo Handa | 2ca9bf4 | 2011-07-08 13:23:44 +0900 | [diff] [blame] | 1220 | const struct tomoyo_name_union *names_p = |
| 1221 | (typeof(names_p)) |
| 1222 | (numbers_p + cond->numbers_count); |
Tetsuo Handa | 5b63685 | 2011-07-08 13:24:54 +0900 | [diff] [blame] | 1223 | const struct tomoyo_argv *argv = |
| 1224 | (typeof(argv)) (names_p + cond->names_count); |
| 1225 | const struct tomoyo_envp *envp = |
| 1226 | (typeof(envp)) (argv + cond->argc); |
Tetsuo Handa | 2066a36 | 2011-07-08 13:21:37 +0900 | [diff] [blame] | 1227 | u16 skip; |
| 1228 | for (skip = 0; skip < head->r.cond_index; skip++) { |
| 1229 | const u8 left = condp->left; |
| 1230 | const u8 right = condp->right; |
| 1231 | condp++; |
| 1232 | switch (left) { |
Tetsuo Handa | 5b63685 | 2011-07-08 13:24:54 +0900 | [diff] [blame] | 1233 | case TOMOYO_ARGV_ENTRY: |
| 1234 | argv++; |
| 1235 | continue; |
| 1236 | case TOMOYO_ENVP_ENTRY: |
| 1237 | envp++; |
| 1238 | continue; |
Tetsuo Handa | 2066a36 | 2011-07-08 13:21:37 +0900 | [diff] [blame] | 1239 | case TOMOYO_NUMBER_UNION: |
| 1240 | numbers_p++; |
| 1241 | break; |
| 1242 | } |
| 1243 | switch (right) { |
Tetsuo Handa | 2ca9bf4 | 2011-07-08 13:23:44 +0900 | [diff] [blame] | 1244 | case TOMOYO_NAME_UNION: |
| 1245 | names_p++; |
| 1246 | break; |
Tetsuo Handa | 2066a36 | 2011-07-08 13:21:37 +0900 | [diff] [blame] | 1247 | case TOMOYO_NUMBER_UNION: |
| 1248 | numbers_p++; |
| 1249 | break; |
| 1250 | } |
| 1251 | } |
| 1252 | while (head->r.cond_index < condc) { |
| 1253 | const u8 match = condp->equals; |
| 1254 | const u8 left = condp->left; |
| 1255 | const u8 right = condp->right; |
| 1256 | if (!tomoyo_flush(head)) |
| 1257 | return false; |
| 1258 | condp++; |
| 1259 | head->r.cond_index++; |
| 1260 | tomoyo_set_space(head); |
| 1261 | switch (left) { |
Tetsuo Handa | 5b63685 | 2011-07-08 13:24:54 +0900 | [diff] [blame] | 1262 | case TOMOYO_ARGV_ENTRY: |
| 1263 | tomoyo_io_printf(head, |
| 1264 | "exec.argv[%lu]%s=\"", |
| 1265 | argv->index, argv-> |
| 1266 | is_not ? "!" : ""); |
| 1267 | tomoyo_set_string(head, |
| 1268 | argv->value->name); |
| 1269 | tomoyo_set_string(head, "\""); |
| 1270 | argv++; |
| 1271 | continue; |
| 1272 | case TOMOYO_ENVP_ENTRY: |
| 1273 | tomoyo_set_string(head, |
| 1274 | "exec.envp[\""); |
| 1275 | tomoyo_set_string(head, |
| 1276 | envp->name->name); |
| 1277 | tomoyo_io_printf(head, "\"]%s=", envp-> |
| 1278 | is_not ? "!" : ""); |
| 1279 | if (envp->value) { |
| 1280 | tomoyo_set_string(head, "\""); |
| 1281 | tomoyo_set_string(head, envp-> |
| 1282 | value->name); |
| 1283 | tomoyo_set_string(head, "\""); |
| 1284 | } else { |
| 1285 | tomoyo_set_string(head, |
| 1286 | "NULL"); |
| 1287 | } |
| 1288 | envp++; |
| 1289 | continue; |
Tetsuo Handa | 2066a36 | 2011-07-08 13:21:37 +0900 | [diff] [blame] | 1290 | case TOMOYO_NUMBER_UNION: |
| 1291 | tomoyo_print_number_union_nospace |
| 1292 | (head, numbers_p++); |
| 1293 | break; |
| 1294 | default: |
| 1295 | tomoyo_set_string(head, |
| 1296 | tomoyo_condition_keyword[left]); |
| 1297 | break; |
| 1298 | } |
| 1299 | tomoyo_set_string(head, match ? "=" : "!="); |
| 1300 | switch (right) { |
Tetsuo Handa | 2ca9bf4 | 2011-07-08 13:23:44 +0900 | [diff] [blame] | 1301 | case TOMOYO_NAME_UNION: |
| 1302 | tomoyo_print_name_union_quoted |
| 1303 | (head, names_p++); |
| 1304 | break; |
Tetsuo Handa | 2066a36 | 2011-07-08 13:21:37 +0900 | [diff] [blame] | 1305 | case TOMOYO_NUMBER_UNION: |
| 1306 | tomoyo_print_number_union_nospace |
| 1307 | (head, numbers_p++); |
| 1308 | break; |
| 1309 | default: |
| 1310 | tomoyo_set_string(head, |
| 1311 | tomoyo_condition_keyword[right]); |
| 1312 | break; |
| 1313 | } |
| 1314 | } |
| 1315 | } |
| 1316 | head->r.cond_step++; |
| 1317 | /* fall through */ |
| 1318 | case 2: |
| 1319 | if (!tomoyo_flush(head)) |
| 1320 | break; |
| 1321 | head->r.cond_step++; |
| 1322 | /* fall through */ |
| 1323 | case 3: |
Tetsuo Handa | 1f067a6 | 2011-09-10 15:24:56 +0900 | [diff] [blame] | 1324 | if (cond->grant_log != TOMOYO_GRANTLOG_AUTO) |
| 1325 | tomoyo_io_printf(head, " grant_log=%s", |
| 1326 | tomoyo_yesno(cond->grant_log == |
| 1327 | TOMOYO_GRANTLOG_YES)); |
Tetsuo Handa | 2066a36 | 2011-07-08 13:21:37 +0900 | [diff] [blame] | 1328 | tomoyo_set_lf(head); |
| 1329 | return true; |
| 1330 | } |
| 1331 | return false; |
| 1332 | } |
| 1333 | |
| 1334 | /** |
Tetsuo Handa | 3299714 | 2011-06-26 23:19:28 +0900 | [diff] [blame] | 1335 | * tomoyo_set_group - Print "acl_group " header keyword and category name. |
Kentaro Takeda | 9590837 | 2009-02-05 17:18:13 +0900 | [diff] [blame] | 1336 | * |
Tetsuo Handa | 0d2171d | 2011-06-26 23:17:46 +0900 | [diff] [blame] | 1337 | * @head: Pointer to "struct tomoyo_io_buffer". |
| 1338 | * @category: Category name. |
Kentaro Takeda | 9590837 | 2009-02-05 17:18:13 +0900 | [diff] [blame] | 1339 | * |
Tetsuo Handa | 0d2171d | 2011-06-26 23:17:46 +0900 | [diff] [blame] | 1340 | * Returns nothing. |
Kentaro Takeda | 9590837 | 2009-02-05 17:18:13 +0900 | [diff] [blame] | 1341 | */ |
Tetsuo Handa | 0d2171d | 2011-06-26 23:17:46 +0900 | [diff] [blame] | 1342 | static void tomoyo_set_group(struct tomoyo_io_buffer *head, |
| 1343 | const char *category) |
Kentaro Takeda | 9590837 | 2009-02-05 17:18:13 +0900 | [diff] [blame] | 1344 | { |
Tetsuo Handa | bd03a3e | 2011-06-26 23:19:52 +0900 | [diff] [blame] | 1345 | if (head->type == TOMOYO_EXCEPTIONPOLICY) { |
| 1346 | tomoyo_print_namespace(head); |
Tetsuo Handa | 3299714 | 2011-06-26 23:19:28 +0900 | [diff] [blame] | 1347 | tomoyo_io_printf(head, "acl_group %u ", |
| 1348 | head->r.acl_group_index); |
Tetsuo Handa | bd03a3e | 2011-06-26 23:19:52 +0900 | [diff] [blame] | 1349 | } |
Tetsuo Handa | 0d2171d | 2011-06-26 23:17:46 +0900 | [diff] [blame] | 1350 | tomoyo_set_string(head, category); |
Tetsuo Handa | 2106ccd | 2010-05-17 10:10:31 +0900 | [diff] [blame] | 1351 | } |
| 1352 | |
| 1353 | /** |
Kentaro Takeda | 9590837 | 2009-02-05 17:18:13 +0900 | [diff] [blame] | 1354 | * tomoyo_print_entry - Print an ACL entry. |
| 1355 | * |
| 1356 | * @head: Pointer to "struct tomoyo_io_buffer". |
Tetsuo Handa | 5db5a39 | 2010-06-24 12:24:19 +0900 | [diff] [blame] | 1357 | * @acl: Pointer to an ACL entry. |
Kentaro Takeda | 9590837 | 2009-02-05 17:18:13 +0900 | [diff] [blame] | 1358 | * |
| 1359 | * Returns true on success, false otherwise. |
| 1360 | */ |
| 1361 | static bool tomoyo_print_entry(struct tomoyo_io_buffer *head, |
Tetsuo Handa | 5db5a39 | 2010-06-24 12:24:19 +0900 | [diff] [blame] | 1362 | struct tomoyo_acl_info *acl) |
Kentaro Takeda | 9590837 | 2009-02-05 17:18:13 +0900 | [diff] [blame] | 1363 | { |
Tetsuo Handa | 5db5a39 | 2010-06-24 12:24:19 +0900 | [diff] [blame] | 1364 | const u8 acl_type = acl->type; |
Tetsuo Handa | 0d2171d | 2011-06-26 23:17:46 +0900 | [diff] [blame] | 1365 | bool first = true; |
Tetsuo Handa | f23571e | 2010-06-24 14:57:16 +0900 | [diff] [blame] | 1366 | u8 bit; |
Kentaro Takeda | 9590837 | 2009-02-05 17:18:13 +0900 | [diff] [blame] | 1367 | |
Tetsuo Handa | 2066a36 | 2011-07-08 13:21:37 +0900 | [diff] [blame] | 1368 | if (head->r.print_cond_part) |
| 1369 | goto print_cond_part; |
Tetsuo Handa | 5db5a39 | 2010-06-24 12:24:19 +0900 | [diff] [blame] | 1370 | if (acl->is_deleted) |
Tetsuo Handa | 237ab45 | 2010-06-12 20:46:22 +0900 | [diff] [blame] | 1371 | return true; |
Tetsuo Handa | f23571e | 2010-06-24 14:57:16 +0900 | [diff] [blame] | 1372 | if (!tomoyo_flush(head)) |
| 1373 | return false; |
| 1374 | else if (acl_type == TOMOYO_TYPE_PATH_ACL) { |
Tetsuo Handa | 5db5a39 | 2010-06-24 12:24:19 +0900 | [diff] [blame] | 1375 | struct tomoyo_path_acl *ptr = |
| 1376 | container_of(acl, typeof(*ptr), head); |
| 1377 | const u16 perm = ptr->perm; |
Tetsuo Handa | 0d2171d | 2011-06-26 23:17:46 +0900 | [diff] [blame] | 1378 | for (bit = 0; bit < TOMOYO_MAX_PATH_OPERATION; bit++) { |
Tetsuo Handa | 5db5a39 | 2010-06-24 12:24:19 +0900 | [diff] [blame] | 1379 | if (!(perm & (1 << bit))) |
| 1380 | continue; |
Tetsuo Handa | bd03a3e | 2011-06-26 23:19:52 +0900 | [diff] [blame] | 1381 | if (head->r.print_transition_related_only && |
Tetsuo Handa | 5db5a39 | 2010-06-24 12:24:19 +0900 | [diff] [blame] | 1382 | bit != TOMOYO_TYPE_EXECUTE) |
| 1383 | continue; |
Tetsuo Handa | 0d2171d | 2011-06-26 23:17:46 +0900 | [diff] [blame] | 1384 | if (first) { |
| 1385 | tomoyo_set_group(head, "file "); |
| 1386 | first = false; |
| 1387 | } else { |
| 1388 | tomoyo_set_slash(head); |
| 1389 | } |
| 1390 | tomoyo_set_string(head, tomoyo_path_keyword[bit]); |
Tetsuo Handa | 5db5a39 | 2010-06-24 12:24:19 +0900 | [diff] [blame] | 1391 | } |
Tetsuo Handa | 0d2171d | 2011-06-26 23:17:46 +0900 | [diff] [blame] | 1392 | if (first) |
| 1393 | return true; |
Tetsuo Handa | f23571e | 2010-06-24 14:57:16 +0900 | [diff] [blame] | 1394 | tomoyo_print_name_union(head, &ptr->name); |
Tetsuo Handa | 731d37a | 2011-09-10 15:25:58 +0900 | [diff] [blame] | 1395 | } else if (acl_type == TOMOYO_TYPE_MANUAL_TASK_ACL) { |
| 1396 | struct tomoyo_task_acl *ptr = |
| 1397 | container_of(acl, typeof(*ptr), head); |
| 1398 | tomoyo_set_group(head, "task "); |
| 1399 | tomoyo_set_string(head, "manual_domain_transition "); |
| 1400 | tomoyo_set_string(head, ptr->domainname->name); |
Tetsuo Handa | bd03a3e | 2011-06-26 23:19:52 +0900 | [diff] [blame] | 1401 | } else if (head->r.print_transition_related_only) { |
Tetsuo Handa | 063821c | 2010-06-24 12:00:25 +0900 | [diff] [blame] | 1402 | return true; |
Tetsuo Handa | 5db5a39 | 2010-06-24 12:24:19 +0900 | [diff] [blame] | 1403 | } else if (acl_type == TOMOYO_TYPE_PATH2_ACL) { |
| 1404 | struct tomoyo_path2_acl *ptr = |
| 1405 | container_of(acl, typeof(*ptr), head); |
Tetsuo Handa | 0d2171d | 2011-06-26 23:17:46 +0900 | [diff] [blame] | 1406 | const u8 perm = ptr->perm; |
| 1407 | for (bit = 0; bit < TOMOYO_MAX_PATH2_OPERATION; bit++) { |
| 1408 | if (!(perm & (1 << bit))) |
| 1409 | continue; |
| 1410 | if (first) { |
| 1411 | tomoyo_set_group(head, "file "); |
| 1412 | first = false; |
| 1413 | } else { |
| 1414 | tomoyo_set_slash(head); |
| 1415 | } |
| 1416 | tomoyo_set_string(head, tomoyo_mac_keywords |
| 1417 | [tomoyo_pp2mac[bit]]); |
| 1418 | } |
| 1419 | if (first) |
| 1420 | return true; |
Tetsuo Handa | f23571e | 2010-06-24 14:57:16 +0900 | [diff] [blame] | 1421 | tomoyo_print_name_union(head, &ptr->name1); |
| 1422 | tomoyo_print_name_union(head, &ptr->name2); |
Tetsuo Handa | 5db5a39 | 2010-06-24 12:24:19 +0900 | [diff] [blame] | 1423 | } else if (acl_type == TOMOYO_TYPE_PATH_NUMBER_ACL) { |
| 1424 | struct tomoyo_path_number_acl *ptr = |
| 1425 | container_of(acl, typeof(*ptr), head); |
Tetsuo Handa | 0d2171d | 2011-06-26 23:17:46 +0900 | [diff] [blame] | 1426 | const u8 perm = ptr->perm; |
| 1427 | for (bit = 0; bit < TOMOYO_MAX_PATH_NUMBER_OPERATION; bit++) { |
| 1428 | if (!(perm & (1 << bit))) |
| 1429 | continue; |
| 1430 | if (first) { |
| 1431 | tomoyo_set_group(head, "file "); |
| 1432 | first = false; |
| 1433 | } else { |
| 1434 | tomoyo_set_slash(head); |
| 1435 | } |
| 1436 | tomoyo_set_string(head, tomoyo_mac_keywords |
| 1437 | [tomoyo_pn2mac[bit]]); |
| 1438 | } |
| 1439 | if (first) |
| 1440 | return true; |
Tetsuo Handa | f23571e | 2010-06-24 14:57:16 +0900 | [diff] [blame] | 1441 | tomoyo_print_name_union(head, &ptr->name); |
| 1442 | tomoyo_print_number_union(head, &ptr->number); |
Tetsuo Handa | 5db5a39 | 2010-06-24 12:24:19 +0900 | [diff] [blame] | 1443 | } else if (acl_type == TOMOYO_TYPE_MKDEV_ACL) { |
| 1444 | struct tomoyo_mkdev_acl *ptr = |
| 1445 | container_of(acl, typeof(*ptr), head); |
Tetsuo Handa | 0d2171d | 2011-06-26 23:17:46 +0900 | [diff] [blame] | 1446 | const u8 perm = ptr->perm; |
| 1447 | for (bit = 0; bit < TOMOYO_MAX_MKDEV_OPERATION; bit++) { |
| 1448 | if (!(perm & (1 << bit))) |
| 1449 | continue; |
| 1450 | if (first) { |
| 1451 | tomoyo_set_group(head, "file "); |
| 1452 | first = false; |
| 1453 | } else { |
| 1454 | tomoyo_set_slash(head); |
| 1455 | } |
| 1456 | tomoyo_set_string(head, tomoyo_mac_keywords |
| 1457 | [tomoyo_pnnn2mac[bit]]); |
| 1458 | } |
| 1459 | if (first) |
| 1460 | return true; |
Tetsuo Handa | f23571e | 2010-06-24 14:57:16 +0900 | [diff] [blame] | 1461 | tomoyo_print_name_union(head, &ptr->name); |
| 1462 | tomoyo_print_number_union(head, &ptr->mode); |
| 1463 | tomoyo_print_number_union(head, &ptr->major); |
| 1464 | tomoyo_print_number_union(head, &ptr->minor); |
Tetsuo Handa | 059d84d | 2011-09-10 15:23:54 +0900 | [diff] [blame] | 1465 | } else if (acl_type == TOMOYO_TYPE_INET_ACL) { |
| 1466 | struct tomoyo_inet_acl *ptr = |
| 1467 | container_of(acl, typeof(*ptr), head); |
| 1468 | const u8 perm = ptr->perm; |
| 1469 | |
| 1470 | for (bit = 0; bit < TOMOYO_MAX_NETWORK_OPERATION; bit++) { |
| 1471 | if (!(perm & (1 << bit))) |
| 1472 | continue; |
| 1473 | if (first) { |
| 1474 | tomoyo_set_group(head, "network inet "); |
| 1475 | tomoyo_set_string(head, tomoyo_proto_keyword |
| 1476 | [ptr->protocol]); |
| 1477 | tomoyo_set_space(head); |
| 1478 | first = false; |
| 1479 | } else { |
| 1480 | tomoyo_set_slash(head); |
| 1481 | } |
| 1482 | tomoyo_set_string(head, tomoyo_socket_keyword[bit]); |
| 1483 | } |
| 1484 | if (first) |
| 1485 | return true; |
| 1486 | tomoyo_set_space(head); |
| 1487 | if (ptr->address.group) { |
| 1488 | tomoyo_set_string(head, "@"); |
| 1489 | tomoyo_set_string(head, ptr->address.group->group_name |
| 1490 | ->name); |
| 1491 | } else { |
| 1492 | char buf[128]; |
| 1493 | tomoyo_print_ip(buf, sizeof(buf), &ptr->address); |
| 1494 | tomoyo_io_printf(head, "%s", buf); |
| 1495 | } |
| 1496 | tomoyo_print_number_union(head, &ptr->port); |
| 1497 | } else if (acl_type == TOMOYO_TYPE_UNIX_ACL) { |
| 1498 | struct tomoyo_unix_acl *ptr = |
| 1499 | container_of(acl, typeof(*ptr), head); |
| 1500 | const u8 perm = ptr->perm; |
| 1501 | |
| 1502 | for (bit = 0; bit < TOMOYO_MAX_NETWORK_OPERATION; bit++) { |
| 1503 | if (!(perm & (1 << bit))) |
| 1504 | continue; |
| 1505 | if (first) { |
| 1506 | tomoyo_set_group(head, "network unix "); |
| 1507 | tomoyo_set_string(head, tomoyo_proto_keyword |
| 1508 | [ptr->protocol]); |
| 1509 | tomoyo_set_space(head); |
| 1510 | first = false; |
| 1511 | } else { |
| 1512 | tomoyo_set_slash(head); |
| 1513 | } |
| 1514 | tomoyo_set_string(head, tomoyo_socket_keyword[bit]); |
| 1515 | } |
| 1516 | if (first) |
| 1517 | return true; |
| 1518 | tomoyo_print_name_union(head, &ptr->name); |
Tetsuo Handa | 5db5a39 | 2010-06-24 12:24:19 +0900 | [diff] [blame] | 1519 | } else if (acl_type == TOMOYO_TYPE_MOUNT_ACL) { |
| 1520 | struct tomoyo_mount_acl *ptr = |
| 1521 | container_of(acl, typeof(*ptr), head); |
Tetsuo Handa | 0d2171d | 2011-06-26 23:17:46 +0900 | [diff] [blame] | 1522 | tomoyo_set_group(head, "file mount"); |
Tetsuo Handa | f23571e | 2010-06-24 14:57:16 +0900 | [diff] [blame] | 1523 | tomoyo_print_name_union(head, &ptr->dev_name); |
| 1524 | tomoyo_print_name_union(head, &ptr->dir_name); |
| 1525 | tomoyo_print_name_union(head, &ptr->fs_type); |
| 1526 | tomoyo_print_number_union(head, &ptr->flags); |
Tetsuo Handa | d58e0da | 2011-09-10 15:22:48 +0900 | [diff] [blame] | 1527 | } else if (acl_type == TOMOYO_TYPE_ENV_ACL) { |
| 1528 | struct tomoyo_env_acl *ptr = |
| 1529 | container_of(acl, typeof(*ptr), head); |
| 1530 | |
| 1531 | tomoyo_set_group(head, "misc env "); |
| 1532 | tomoyo_set_string(head, ptr->env->name); |
Kentaro Takeda | 9590837 | 2009-02-05 17:18:13 +0900 | [diff] [blame] | 1533 | } |
Tetsuo Handa | 2066a36 | 2011-07-08 13:21:37 +0900 | [diff] [blame] | 1534 | if (acl->cond) { |
| 1535 | head->r.print_cond_part = true; |
| 1536 | head->r.cond_step = 0; |
| 1537 | if (!tomoyo_flush(head)) |
| 1538 | return false; |
| 1539 | print_cond_part: |
| 1540 | if (!tomoyo_print_condition(head, acl->cond)) |
| 1541 | return false; |
| 1542 | head->r.print_cond_part = false; |
| 1543 | } else { |
| 1544 | tomoyo_set_lf(head); |
| 1545 | } |
Tetsuo Handa | 5db5a39 | 2010-06-24 12:24:19 +0900 | [diff] [blame] | 1546 | return true; |
Tetsuo Handa | f23571e | 2010-06-24 14:57:16 +0900 | [diff] [blame] | 1547 | } |
| 1548 | |
| 1549 | /** |
| 1550 | * tomoyo_read_domain2 - Read domain policy. |
| 1551 | * |
Tetsuo Handa | 3299714 | 2011-06-26 23:19:28 +0900 | [diff] [blame] | 1552 | * @head: Pointer to "struct tomoyo_io_buffer". |
| 1553 | * @list: Pointer to "struct list_head". |
Tetsuo Handa | f23571e | 2010-06-24 14:57:16 +0900 | [diff] [blame] | 1554 | * |
| 1555 | * Caller holds tomoyo_read_lock(). |
| 1556 | * |
| 1557 | * Returns true on success, false otherwise. |
| 1558 | */ |
| 1559 | static bool tomoyo_read_domain2(struct tomoyo_io_buffer *head, |
Tetsuo Handa | 3299714 | 2011-06-26 23:19:28 +0900 | [diff] [blame] | 1560 | struct list_head *list) |
Tetsuo Handa | f23571e | 2010-06-24 14:57:16 +0900 | [diff] [blame] | 1561 | { |
Tetsuo Handa | 3299714 | 2011-06-26 23:19:28 +0900 | [diff] [blame] | 1562 | list_for_each_cookie(head->r.acl, list) { |
Tetsuo Handa | f23571e | 2010-06-24 14:57:16 +0900 | [diff] [blame] | 1563 | struct tomoyo_acl_info *ptr = |
| 1564 | list_entry(head->r.acl, typeof(*ptr), list); |
| 1565 | if (!tomoyo_print_entry(head, ptr)) |
| 1566 | return false; |
| 1567 | } |
| 1568 | head->r.acl = NULL; |
| 1569 | return true; |
Kentaro Takeda | 9590837 | 2009-02-05 17:18:13 +0900 | [diff] [blame] | 1570 | } |
| 1571 | |
| 1572 | /** |
Tetsuo Handa | e2bf690 | 2010-06-25 11:16:00 +0900 | [diff] [blame] | 1573 | * tomoyo_read_domain - Read domain policy. |
Kentaro Takeda | 9590837 | 2009-02-05 17:18:13 +0900 | [diff] [blame] | 1574 | * |
| 1575 | * @head: Pointer to "struct tomoyo_io_buffer". |
| 1576 | * |
Tetsuo Handa | fdb8ebb | 2009-12-08 09:34:43 +0900 | [diff] [blame] | 1577 | * Caller holds tomoyo_read_lock(). |
Kentaro Takeda | 9590837 | 2009-02-05 17:18:13 +0900 | [diff] [blame] | 1578 | */ |
Tetsuo Handa | e2bf690 | 2010-06-25 11:16:00 +0900 | [diff] [blame] | 1579 | static void tomoyo_read_domain(struct tomoyo_io_buffer *head) |
Kentaro Takeda | 9590837 | 2009-02-05 17:18:13 +0900 | [diff] [blame] | 1580 | { |
Tetsuo Handa | f23571e | 2010-06-24 14:57:16 +0900 | [diff] [blame] | 1581 | if (head->r.eof) |
Tetsuo Handa | 8fbe71f | 2010-06-16 16:29:59 +0900 | [diff] [blame] | 1582 | return; |
Tetsuo Handa | f23571e | 2010-06-24 14:57:16 +0900 | [diff] [blame] | 1583 | list_for_each_cookie(head->r.domain, &tomoyo_domain_list) { |
Tetsuo Handa | 475e6fa | 2010-06-24 11:28:14 +0900 | [diff] [blame] | 1584 | struct tomoyo_domain_info *domain = |
Tetsuo Handa | f23571e | 2010-06-24 14:57:16 +0900 | [diff] [blame] | 1585 | list_entry(head->r.domain, typeof(*domain), list); |
| 1586 | switch (head->r.step) { |
Tetsuo Handa | 2c47ab9 | 2011-06-26 23:21:19 +0900 | [diff] [blame] | 1587 | u8 i; |
Tetsuo Handa | f23571e | 2010-06-24 14:57:16 +0900 | [diff] [blame] | 1588 | case 0: |
| 1589 | if (domain->is_deleted && |
| 1590 | !head->r.print_this_domain_only) |
| 1591 | continue; |
| 1592 | /* Print domainname and flags. */ |
| 1593 | tomoyo_set_string(head, domain->domainname->name); |
| 1594 | tomoyo_set_lf(head); |
Tetsuo Handa | b5bc60b | 2011-06-26 23:16:03 +0900 | [diff] [blame] | 1595 | tomoyo_io_printf(head, "use_profile %u\n", |
Tetsuo Handa | f23571e | 2010-06-24 14:57:16 +0900 | [diff] [blame] | 1596 | domain->profile); |
Tetsuo Handa | 3299714 | 2011-06-26 23:19:28 +0900 | [diff] [blame] | 1597 | tomoyo_io_printf(head, "use_group %u\n", |
| 1598 | domain->group); |
Tetsuo Handa | 2c47ab9 | 2011-06-26 23:21:19 +0900 | [diff] [blame] | 1599 | for (i = 0; i < TOMOYO_MAX_DOMAIN_INFO_FLAGS; i++) |
| 1600 | if (domain->flags[i]) |
| 1601 | tomoyo_set_string(head, tomoyo_dif[i]); |
Tetsuo Handa | f23571e | 2010-06-24 14:57:16 +0900 | [diff] [blame] | 1602 | head->r.step++; |
| 1603 | tomoyo_set_lf(head); |
| 1604 | /* fall through */ |
| 1605 | case 1: |
Tetsuo Handa | 3299714 | 2011-06-26 23:19:28 +0900 | [diff] [blame] | 1606 | if (!tomoyo_read_domain2(head, &domain->acl_info_list)) |
Tetsuo Handa | f23571e | 2010-06-24 14:57:16 +0900 | [diff] [blame] | 1607 | return; |
| 1608 | head->r.step++; |
| 1609 | if (!tomoyo_set_lf(head)) |
| 1610 | return; |
| 1611 | /* fall through */ |
| 1612 | case 2: |
| 1613 | head->r.step = 0; |
| 1614 | if (head->r.print_this_domain_only) |
| 1615 | goto done; |
Kentaro Takeda | 9590837 | 2009-02-05 17:18:13 +0900 | [diff] [blame] | 1616 | } |
Kentaro Takeda | 9590837 | 2009-02-05 17:18:13 +0900 | [diff] [blame] | 1617 | } |
Tetsuo Handa | f23571e | 2010-06-24 14:57:16 +0900 | [diff] [blame] | 1618 | done: |
| 1619 | head->r.eof = true; |
Kentaro Takeda | 9590837 | 2009-02-05 17:18:13 +0900 | [diff] [blame] | 1620 | } |
| 1621 | |
| 1622 | /** |
Kentaro Takeda | 9590837 | 2009-02-05 17:18:13 +0900 | [diff] [blame] | 1623 | * tomoyo_write_pid: Specify PID to obtain domainname. |
| 1624 | * |
| 1625 | * @head: Pointer to "struct tomoyo_io_buffer". |
| 1626 | * |
| 1627 | * Returns 0. |
| 1628 | */ |
| 1629 | static int tomoyo_write_pid(struct tomoyo_io_buffer *head) |
| 1630 | { |
Tetsuo Handa | f23571e | 2010-06-24 14:57:16 +0900 | [diff] [blame] | 1631 | head->r.eof = false; |
Kentaro Takeda | 9590837 | 2009-02-05 17:18:13 +0900 | [diff] [blame] | 1632 | return 0; |
| 1633 | } |
| 1634 | |
| 1635 | /** |
| 1636 | * tomoyo_read_pid - Get domainname of the specified PID. |
| 1637 | * |
| 1638 | * @head: Pointer to "struct tomoyo_io_buffer". |
| 1639 | * |
| 1640 | * Returns the domainname which the specified PID is in on success, |
| 1641 | * empty string otherwise. |
| 1642 | * The PID is specified by tomoyo_write_pid() so that the user can obtain |
| 1643 | * using read()/write() interface rather than sysctl() interface. |
| 1644 | */ |
Tetsuo Handa | 8fbe71f | 2010-06-16 16:29:59 +0900 | [diff] [blame] | 1645 | static void tomoyo_read_pid(struct tomoyo_io_buffer *head) |
Kentaro Takeda | 9590837 | 2009-02-05 17:18:13 +0900 | [diff] [blame] | 1646 | { |
Tetsuo Handa | f23571e | 2010-06-24 14:57:16 +0900 | [diff] [blame] | 1647 | char *buf = head->write_buf; |
| 1648 | bool global_pid = false; |
| 1649 | unsigned int pid; |
| 1650 | struct task_struct *p; |
| 1651 | struct tomoyo_domain_info *domain = NULL; |
| 1652 | |
| 1653 | /* Accessing write_buf is safe because head->io_sem is held. */ |
| 1654 | if (!buf) { |
| 1655 | head->r.eof = true; |
| 1656 | return; /* Do nothing if open(O_RDONLY). */ |
Kentaro Takeda | 9590837 | 2009-02-05 17:18:13 +0900 | [diff] [blame] | 1657 | } |
Tetsuo Handa | f23571e | 2010-06-24 14:57:16 +0900 | [diff] [blame] | 1658 | if (head->r.w_pos || head->r.eof) |
| 1659 | return; |
| 1660 | head->r.eof = true; |
| 1661 | if (tomoyo_str_starts(&buf, "global-pid ")) |
| 1662 | global_pid = true; |
| 1663 | pid = (unsigned int) simple_strtoul(buf, NULL, 10); |
| 1664 | rcu_read_lock(); |
Tetsuo Handa | f23571e | 2010-06-24 14:57:16 +0900 | [diff] [blame] | 1665 | if (global_pid) |
| 1666 | p = find_task_by_pid_ns(pid, &init_pid_ns); |
| 1667 | else |
| 1668 | p = find_task_by_vpid(pid); |
| 1669 | if (p) |
| 1670 | domain = tomoyo_real_domain(p); |
Tetsuo Handa | f23571e | 2010-06-24 14:57:16 +0900 | [diff] [blame] | 1671 | rcu_read_unlock(); |
| 1672 | if (!domain) |
| 1673 | return; |
| 1674 | tomoyo_io_printf(head, "%u %u ", pid, domain->profile); |
| 1675 | tomoyo_set_string(head, domain->domainname->name); |
Kentaro Takeda | 9590837 | 2009-02-05 17:18:13 +0900 | [diff] [blame] | 1676 | } |
| 1677 | |
Tetsuo Handa | 0f2a55d | 2011-07-14 14:46:51 +0900 | [diff] [blame] | 1678 | /* String table for domain transition control keywords. */ |
Tetsuo Handa | 5448ec4 | 2010-06-21 11:14:39 +0900 | [diff] [blame] | 1679 | static const char *tomoyo_transition_type[TOMOYO_MAX_TRANSITION_TYPE] = { |
Tetsuo Handa | bd03a3e | 2011-06-26 23:19:52 +0900 | [diff] [blame] | 1680 | [TOMOYO_TRANSITION_CONTROL_NO_RESET] = "no_reset_domain ", |
| 1681 | [TOMOYO_TRANSITION_CONTROL_RESET] = "reset_domain ", |
| 1682 | [TOMOYO_TRANSITION_CONTROL_NO_INITIALIZE] = "no_initialize_domain ", |
| 1683 | [TOMOYO_TRANSITION_CONTROL_INITIALIZE] = "initialize_domain ", |
| 1684 | [TOMOYO_TRANSITION_CONTROL_NO_KEEP] = "no_keep_domain ", |
| 1685 | [TOMOYO_TRANSITION_CONTROL_KEEP] = "keep_domain ", |
Tetsuo Handa | 5448ec4 | 2010-06-21 11:14:39 +0900 | [diff] [blame] | 1686 | }; |
| 1687 | |
Tetsuo Handa | 0f2a55d | 2011-07-14 14:46:51 +0900 | [diff] [blame] | 1688 | /* String table for grouping keywords. */ |
Tetsuo Handa | e2bf690 | 2010-06-25 11:16:00 +0900 | [diff] [blame] | 1689 | static const char *tomoyo_group_name[TOMOYO_MAX_GROUP] = { |
Tetsuo Handa | 059d84d | 2011-09-10 15:23:54 +0900 | [diff] [blame] | 1690 | [TOMOYO_PATH_GROUP] = "path_group ", |
| 1691 | [TOMOYO_NUMBER_GROUP] = "number_group ", |
| 1692 | [TOMOYO_ADDRESS_GROUP] = "address_group ", |
Tetsuo Handa | e2bf690 | 2010-06-25 11:16:00 +0900 | [diff] [blame] | 1693 | }; |
| 1694 | |
Kentaro Takeda | 9590837 | 2009-02-05 17:18:13 +0900 | [diff] [blame] | 1695 | /** |
Tetsuo Handa | e2bf690 | 2010-06-25 11:16:00 +0900 | [diff] [blame] | 1696 | * tomoyo_write_exception - Write exception policy. |
Kentaro Takeda | 9590837 | 2009-02-05 17:18:13 +0900 | [diff] [blame] | 1697 | * |
| 1698 | * @head: Pointer to "struct tomoyo_io_buffer". |
| 1699 | * |
| 1700 | * Returns 0 on success, negative value otherwise. |
Tetsuo Handa | fdb8ebb | 2009-12-08 09:34:43 +0900 | [diff] [blame] | 1701 | * |
| 1702 | * Caller holds tomoyo_read_lock(). |
Kentaro Takeda | 9590837 | 2009-02-05 17:18:13 +0900 | [diff] [blame] | 1703 | */ |
Tetsuo Handa | e2bf690 | 2010-06-25 11:16:00 +0900 | [diff] [blame] | 1704 | static int tomoyo_write_exception(struct tomoyo_io_buffer *head) |
Kentaro Takeda | 9590837 | 2009-02-05 17:18:13 +0900 | [diff] [blame] | 1705 | { |
Tetsuo Handa | bd03a3e | 2011-06-26 23:19:52 +0900 | [diff] [blame] | 1706 | const bool is_delete = head->w.is_delete; |
Tetsuo Handa | a238cf5 | 2011-06-26 23:17:10 +0900 | [diff] [blame] | 1707 | struct tomoyo_acl_param param = { |
Tetsuo Handa | bd03a3e | 2011-06-26 23:19:52 +0900 | [diff] [blame] | 1708 | .ns = head->w.ns, |
| 1709 | .is_delete = is_delete, |
Tetsuo Handa | a238cf5 | 2011-06-26 23:17:10 +0900 | [diff] [blame] | 1710 | .data = head->write_buf, |
Tetsuo Handa | e2bf690 | 2010-06-25 11:16:00 +0900 | [diff] [blame] | 1711 | }; |
Tetsuo Handa | a238cf5 | 2011-06-26 23:17:10 +0900 | [diff] [blame] | 1712 | u8 i; |
Tetsuo Handa | a238cf5 | 2011-06-26 23:17:10 +0900 | [diff] [blame] | 1713 | if (tomoyo_str_starts(¶m.data, "aggregator ")) |
| 1714 | return tomoyo_write_aggregator(¶m); |
Tetsuo Handa | e2bf690 | 2010-06-25 11:16:00 +0900 | [diff] [blame] | 1715 | for (i = 0; i < TOMOYO_MAX_TRANSITION_TYPE; i++) |
Tetsuo Handa | a238cf5 | 2011-06-26 23:17:10 +0900 | [diff] [blame] | 1716 | if (tomoyo_str_starts(¶m.data, tomoyo_transition_type[i])) |
| 1717 | return tomoyo_write_transition_control(¶m, i); |
Tetsuo Handa | e2bf690 | 2010-06-25 11:16:00 +0900 | [diff] [blame] | 1718 | for (i = 0; i < TOMOYO_MAX_GROUP; i++) |
Tetsuo Handa | a238cf5 | 2011-06-26 23:17:10 +0900 | [diff] [blame] | 1719 | if (tomoyo_str_starts(¶m.data, tomoyo_group_name[i])) |
| 1720 | return tomoyo_write_group(¶m, i); |
Tetsuo Handa | 3299714 | 2011-06-26 23:19:28 +0900 | [diff] [blame] | 1721 | if (tomoyo_str_starts(¶m.data, "acl_group ")) { |
| 1722 | unsigned int group; |
| 1723 | char *data; |
| 1724 | group = simple_strtoul(param.data, &data, 10); |
| 1725 | if (group < TOMOYO_MAX_ACL_GROUPS && *data++ == ' ') |
Tetsuo Handa | bd03a3e | 2011-06-26 23:19:52 +0900 | [diff] [blame] | 1726 | return tomoyo_write_domain2 |
| 1727 | (head->w.ns, &head->w.ns->acl_group[group], |
| 1728 | data, is_delete); |
Tetsuo Handa | 3299714 | 2011-06-26 23:19:28 +0900 | [diff] [blame] | 1729 | } |
Kentaro Takeda | 9590837 | 2009-02-05 17:18:13 +0900 | [diff] [blame] | 1730 | return -EINVAL; |
| 1731 | } |
| 1732 | |
Tetsuo Handa | 31845e8 | 2010-06-17 16:54:33 +0900 | [diff] [blame] | 1733 | /** |
Tetsuo Handa | 059d84d | 2011-09-10 15:23:54 +0900 | [diff] [blame] | 1734 | * tomoyo_read_group - Read "struct tomoyo_path_group"/"struct tomoyo_number_group"/"struct tomoyo_address_group" list. |
Tetsuo Handa | 31845e8 | 2010-06-17 16:54:33 +0900 | [diff] [blame] | 1735 | * |
| 1736 | * @head: Pointer to "struct tomoyo_io_buffer". |
| 1737 | * @idx: Index number. |
| 1738 | * |
| 1739 | * Returns true on success, false otherwise. |
| 1740 | * |
| 1741 | * Caller holds tomoyo_read_lock(). |
| 1742 | */ |
| 1743 | static bool tomoyo_read_group(struct tomoyo_io_buffer *head, const int idx) |
| 1744 | { |
Tetsuo Handa | bd03a3e | 2011-06-26 23:19:52 +0900 | [diff] [blame] | 1745 | struct tomoyo_policy_namespace *ns = |
| 1746 | container_of(head->r.ns, typeof(*ns), namespace_list); |
| 1747 | struct list_head *list = &ns->group_list[idx]; |
| 1748 | list_for_each_cookie(head->r.group, list) { |
Tetsuo Handa | 31845e8 | 2010-06-17 16:54:33 +0900 | [diff] [blame] | 1749 | struct tomoyo_group *group = |
Tetsuo Handa | 0df7e8b | 2011-06-26 23:16:36 +0900 | [diff] [blame] | 1750 | list_entry(head->r.group, typeof(*group), head.list); |
Tetsuo Handa | f23571e | 2010-06-24 14:57:16 +0900 | [diff] [blame] | 1751 | list_for_each_cookie(head->r.acl, &group->member_list) { |
Tetsuo Handa | 31845e8 | 2010-06-17 16:54:33 +0900 | [diff] [blame] | 1752 | struct tomoyo_acl_head *ptr = |
Tetsuo Handa | f23571e | 2010-06-24 14:57:16 +0900 | [diff] [blame] | 1753 | list_entry(head->r.acl, typeof(*ptr), list); |
Tetsuo Handa | 31845e8 | 2010-06-17 16:54:33 +0900 | [diff] [blame] | 1754 | if (ptr->is_deleted) |
| 1755 | continue; |
Tetsuo Handa | f23571e | 2010-06-24 14:57:16 +0900 | [diff] [blame] | 1756 | if (!tomoyo_flush(head)) |
Tetsuo Handa | 31845e8 | 2010-06-17 16:54:33 +0900 | [diff] [blame] | 1757 | return false; |
Tetsuo Handa | bd03a3e | 2011-06-26 23:19:52 +0900 | [diff] [blame] | 1758 | tomoyo_print_namespace(head); |
Tetsuo Handa | f23571e | 2010-06-24 14:57:16 +0900 | [diff] [blame] | 1759 | tomoyo_set_string(head, tomoyo_group_name[idx]); |
| 1760 | tomoyo_set_string(head, group->group_name->name); |
| 1761 | if (idx == TOMOYO_PATH_GROUP) { |
| 1762 | tomoyo_set_space(head); |
| 1763 | tomoyo_set_string(head, container_of |
| 1764 | (ptr, struct tomoyo_path_group, |
| 1765 | head)->member_name->name); |
| 1766 | } else if (idx == TOMOYO_NUMBER_GROUP) { |
| 1767 | tomoyo_print_number_union(head, &container_of |
| 1768 | (ptr, |
| 1769 | struct tomoyo_number_group, |
| 1770 | head)->number); |
Tetsuo Handa | 059d84d | 2011-09-10 15:23:54 +0900 | [diff] [blame] | 1771 | } else if (idx == TOMOYO_ADDRESS_GROUP) { |
| 1772 | char buffer[128]; |
| 1773 | |
| 1774 | struct tomoyo_address_group *member = |
| 1775 | container_of(ptr, typeof(*member), |
| 1776 | head); |
| 1777 | tomoyo_print_ip(buffer, sizeof(buffer), |
| 1778 | &member->address); |
| 1779 | tomoyo_io_printf(head, " %s", buffer); |
Tetsuo Handa | f23571e | 2010-06-24 14:57:16 +0900 | [diff] [blame] | 1780 | } |
| 1781 | tomoyo_set_lf(head); |
Tetsuo Handa | 31845e8 | 2010-06-17 16:54:33 +0900 | [diff] [blame] | 1782 | } |
Tetsuo Handa | f23571e | 2010-06-24 14:57:16 +0900 | [diff] [blame] | 1783 | head->r.acl = NULL; |
Tetsuo Handa | 31845e8 | 2010-06-17 16:54:33 +0900 | [diff] [blame] | 1784 | } |
Tetsuo Handa | f23571e | 2010-06-24 14:57:16 +0900 | [diff] [blame] | 1785 | head->r.group = NULL; |
Tetsuo Handa | 31845e8 | 2010-06-17 16:54:33 +0900 | [diff] [blame] | 1786 | return true; |
| 1787 | } |
| 1788 | |
| 1789 | /** |
| 1790 | * tomoyo_read_policy - Read "struct tomoyo_..._entry" list. |
| 1791 | * |
| 1792 | * @head: Pointer to "struct tomoyo_io_buffer". |
| 1793 | * @idx: Index number. |
| 1794 | * |
| 1795 | * Returns true on success, false otherwise. |
| 1796 | * |
| 1797 | * Caller holds tomoyo_read_lock(). |
| 1798 | */ |
| 1799 | static bool tomoyo_read_policy(struct tomoyo_io_buffer *head, const int idx) |
| 1800 | { |
Tetsuo Handa | bd03a3e | 2011-06-26 23:19:52 +0900 | [diff] [blame] | 1801 | struct tomoyo_policy_namespace *ns = |
| 1802 | container_of(head->r.ns, typeof(*ns), namespace_list); |
| 1803 | struct list_head *list = &ns->policy_list[idx]; |
| 1804 | list_for_each_cookie(head->r.acl, list) { |
Tetsuo Handa | 475e6fa | 2010-06-24 11:28:14 +0900 | [diff] [blame] | 1805 | struct tomoyo_acl_head *acl = |
Tetsuo Handa | f23571e | 2010-06-24 14:57:16 +0900 | [diff] [blame] | 1806 | container_of(head->r.acl, typeof(*acl), list); |
Tetsuo Handa | 31845e8 | 2010-06-17 16:54:33 +0900 | [diff] [blame] | 1807 | if (acl->is_deleted) |
| 1808 | continue; |
Tetsuo Handa | f23571e | 2010-06-24 14:57:16 +0900 | [diff] [blame] | 1809 | if (!tomoyo_flush(head)) |
| 1810 | return false; |
Tetsuo Handa | 31845e8 | 2010-06-17 16:54:33 +0900 | [diff] [blame] | 1811 | switch (idx) { |
Tetsuo Handa | 5448ec4 | 2010-06-21 11:14:39 +0900 | [diff] [blame] | 1812 | case TOMOYO_ID_TRANSITION_CONTROL: |
Tetsuo Handa | 31845e8 | 2010-06-17 16:54:33 +0900 | [diff] [blame] | 1813 | { |
Tetsuo Handa | 5448ec4 | 2010-06-21 11:14:39 +0900 | [diff] [blame] | 1814 | struct tomoyo_transition_control *ptr = |
Tetsuo Handa | 31845e8 | 2010-06-17 16:54:33 +0900 | [diff] [blame] | 1815 | container_of(acl, typeof(*ptr), head); |
Tetsuo Handa | bd03a3e | 2011-06-26 23:19:52 +0900 | [diff] [blame] | 1816 | tomoyo_print_namespace(head); |
Tetsuo Handa | 0d2171d | 2011-06-26 23:17:46 +0900 | [diff] [blame] | 1817 | tomoyo_set_string(head, tomoyo_transition_type |
Tetsuo Handa | f23571e | 2010-06-24 14:57:16 +0900 | [diff] [blame] | 1818 | [ptr->type]); |
Tetsuo Handa | 0d2171d | 2011-06-26 23:17:46 +0900 | [diff] [blame] | 1819 | tomoyo_set_string(head, ptr->program ? |
| 1820 | ptr->program->name : "any"); |
| 1821 | tomoyo_set_string(head, " from "); |
| 1822 | tomoyo_set_string(head, ptr->domainname ? |
| 1823 | ptr->domainname->name : |
| 1824 | "any"); |
Tetsuo Handa | 31845e8 | 2010-06-17 16:54:33 +0900 | [diff] [blame] | 1825 | } |
| 1826 | break; |
Tetsuo Handa | 31845e8 | 2010-06-17 16:54:33 +0900 | [diff] [blame] | 1827 | case TOMOYO_ID_AGGREGATOR: |
| 1828 | { |
Tetsuo Handa | e2bf690 | 2010-06-25 11:16:00 +0900 | [diff] [blame] | 1829 | struct tomoyo_aggregator *ptr = |
Tetsuo Handa | 31845e8 | 2010-06-17 16:54:33 +0900 | [diff] [blame] | 1830 | container_of(acl, typeof(*ptr), head); |
Tetsuo Handa | bd03a3e | 2011-06-26 23:19:52 +0900 | [diff] [blame] | 1831 | tomoyo_print_namespace(head); |
Tetsuo Handa | b5bc60b | 2011-06-26 23:16:03 +0900 | [diff] [blame] | 1832 | tomoyo_set_string(head, "aggregator "); |
Tetsuo Handa | f23571e | 2010-06-24 14:57:16 +0900 | [diff] [blame] | 1833 | tomoyo_set_string(head, |
| 1834 | ptr->original_name->name); |
| 1835 | tomoyo_set_space(head); |
| 1836 | tomoyo_set_string(head, |
| 1837 | ptr->aggregated_name->name); |
Tetsuo Handa | 31845e8 | 2010-06-17 16:54:33 +0900 | [diff] [blame] | 1838 | } |
| 1839 | break; |
Tetsuo Handa | 31845e8 | 2010-06-17 16:54:33 +0900 | [diff] [blame] | 1840 | default: |
| 1841 | continue; |
| 1842 | } |
Tetsuo Handa | f23571e | 2010-06-24 14:57:16 +0900 | [diff] [blame] | 1843 | tomoyo_set_lf(head); |
Tetsuo Handa | 31845e8 | 2010-06-17 16:54:33 +0900 | [diff] [blame] | 1844 | } |
Tetsuo Handa | f23571e | 2010-06-24 14:57:16 +0900 | [diff] [blame] | 1845 | head->r.acl = NULL; |
Tetsuo Handa | 31845e8 | 2010-06-17 16:54:33 +0900 | [diff] [blame] | 1846 | return true; |
| 1847 | } |
| 1848 | |
Kentaro Takeda | 9590837 | 2009-02-05 17:18:13 +0900 | [diff] [blame] | 1849 | /** |
Tetsuo Handa | e2bf690 | 2010-06-25 11:16:00 +0900 | [diff] [blame] | 1850 | * tomoyo_read_exception - Read exception policy. |
Kentaro Takeda | 9590837 | 2009-02-05 17:18:13 +0900 | [diff] [blame] | 1851 | * |
| 1852 | * @head: Pointer to "struct tomoyo_io_buffer". |
| 1853 | * |
Tetsuo Handa | fdb8ebb | 2009-12-08 09:34:43 +0900 | [diff] [blame] | 1854 | * Caller holds tomoyo_read_lock(). |
Kentaro Takeda | 9590837 | 2009-02-05 17:18:13 +0900 | [diff] [blame] | 1855 | */ |
Tetsuo Handa | e2bf690 | 2010-06-25 11:16:00 +0900 | [diff] [blame] | 1856 | static void tomoyo_read_exception(struct tomoyo_io_buffer *head) |
Kentaro Takeda | 9590837 | 2009-02-05 17:18:13 +0900 | [diff] [blame] | 1857 | { |
Tetsuo Handa | bd03a3e | 2011-06-26 23:19:52 +0900 | [diff] [blame] | 1858 | struct tomoyo_policy_namespace *ns = |
| 1859 | container_of(head->r.ns, typeof(*ns), namespace_list); |
Tetsuo Handa | f23571e | 2010-06-24 14:57:16 +0900 | [diff] [blame] | 1860 | if (head->r.eof) |
Tetsuo Handa | 31845e8 | 2010-06-17 16:54:33 +0900 | [diff] [blame] | 1861 | return; |
Tetsuo Handa | f23571e | 2010-06-24 14:57:16 +0900 | [diff] [blame] | 1862 | while (head->r.step < TOMOYO_MAX_POLICY && |
| 1863 | tomoyo_read_policy(head, head->r.step)) |
| 1864 | head->r.step++; |
| 1865 | if (head->r.step < TOMOYO_MAX_POLICY) |
Tetsuo Handa | 31845e8 | 2010-06-17 16:54:33 +0900 | [diff] [blame] | 1866 | return; |
Tetsuo Handa | f23571e | 2010-06-24 14:57:16 +0900 | [diff] [blame] | 1867 | while (head->r.step < TOMOYO_MAX_POLICY + TOMOYO_MAX_GROUP && |
| 1868 | tomoyo_read_group(head, head->r.step - TOMOYO_MAX_POLICY)) |
| 1869 | head->r.step++; |
| 1870 | if (head->r.step < TOMOYO_MAX_POLICY + TOMOYO_MAX_GROUP) |
Tetsuo Handa | 31845e8 | 2010-06-17 16:54:33 +0900 | [diff] [blame] | 1871 | return; |
Tetsuo Handa | 3299714 | 2011-06-26 23:19:28 +0900 | [diff] [blame] | 1872 | while (head->r.step < TOMOYO_MAX_POLICY + TOMOYO_MAX_GROUP |
| 1873 | + TOMOYO_MAX_ACL_GROUPS) { |
| 1874 | head->r.acl_group_index = head->r.step - TOMOYO_MAX_POLICY |
| 1875 | - TOMOYO_MAX_GROUP; |
Tetsuo Handa | bd03a3e | 2011-06-26 23:19:52 +0900 | [diff] [blame] | 1876 | if (!tomoyo_read_domain2(head, &ns->acl_group |
Tetsuo Handa | 3299714 | 2011-06-26 23:19:28 +0900 | [diff] [blame] | 1877 | [head->r.acl_group_index])) |
| 1878 | return; |
| 1879 | head->r.step++; |
| 1880 | } |
Tetsuo Handa | f23571e | 2010-06-24 14:57:16 +0900 | [diff] [blame] | 1881 | head->r.eof = true; |
Kentaro Takeda | 9590837 | 2009-02-05 17:18:13 +0900 | [diff] [blame] | 1882 | } |
| 1883 | |
Tetsuo Handa | eadd99c | 2011-06-26 23:18:58 +0900 | [diff] [blame] | 1884 | /* Wait queue for kernel -> userspace notification. */ |
Tetsuo Handa | 17fcfbd | 2010-05-17 10:11:36 +0900 | [diff] [blame] | 1885 | static DECLARE_WAIT_QUEUE_HEAD(tomoyo_query_wait); |
Tetsuo Handa | eadd99c | 2011-06-26 23:18:58 +0900 | [diff] [blame] | 1886 | /* Wait queue for userspace -> kernel notification. */ |
| 1887 | static DECLARE_WAIT_QUEUE_HEAD(tomoyo_answer_wait); |
Tetsuo Handa | 17fcfbd | 2010-05-17 10:11:36 +0900 | [diff] [blame] | 1888 | |
| 1889 | /* Structure for query. */ |
Tetsuo Handa | e2bf690 | 2010-06-25 11:16:00 +0900 | [diff] [blame] | 1890 | struct tomoyo_query { |
Tetsuo Handa | 17fcfbd | 2010-05-17 10:11:36 +0900 | [diff] [blame] | 1891 | struct list_head list; |
Tetsuo Handa | 59df316 | 2011-10-20 06:48:57 +0900 | [diff] [blame] | 1892 | struct tomoyo_domain_info *domain; |
Tetsuo Handa | 17fcfbd | 2010-05-17 10:11:36 +0900 | [diff] [blame] | 1893 | char *query; |
Tetsuo Handa | eadd99c | 2011-06-26 23:18:58 +0900 | [diff] [blame] | 1894 | size_t query_len; |
Tetsuo Handa | 17fcfbd | 2010-05-17 10:11:36 +0900 | [diff] [blame] | 1895 | unsigned int serial; |
Tetsuo Handa | eadd99c | 2011-06-26 23:18:58 +0900 | [diff] [blame] | 1896 | u8 timer; |
| 1897 | u8 answer; |
| 1898 | u8 retry; |
Tetsuo Handa | 17fcfbd | 2010-05-17 10:11:36 +0900 | [diff] [blame] | 1899 | }; |
| 1900 | |
Tetsuo Handa | e2bf690 | 2010-06-25 11:16:00 +0900 | [diff] [blame] | 1901 | /* The list for "struct tomoyo_query". */ |
Tetsuo Handa | 17fcfbd | 2010-05-17 10:11:36 +0900 | [diff] [blame] | 1902 | static LIST_HEAD(tomoyo_query_list); |
| 1903 | |
Tetsuo Handa | eadd99c | 2011-06-26 23:18:58 +0900 | [diff] [blame] | 1904 | /* Lock for manipulating tomoyo_query_list. */ |
| 1905 | static DEFINE_SPINLOCK(tomoyo_query_list_lock); |
| 1906 | |
Tetsuo Handa | 17fcfbd | 2010-05-17 10:11:36 +0900 | [diff] [blame] | 1907 | /* |
| 1908 | * Number of "struct file" referring /sys/kernel/security/tomoyo/query |
| 1909 | * interface. |
| 1910 | */ |
| 1911 | static atomic_t tomoyo_query_observers = ATOMIC_INIT(0); |
| 1912 | |
| 1913 | /** |
Tetsuo Handa | 2ca9bf4 | 2011-07-08 13:23:44 +0900 | [diff] [blame] | 1914 | * tomoyo_truncate - Truncate a line. |
| 1915 | * |
| 1916 | * @str: String to truncate. |
| 1917 | * |
| 1918 | * Returns length of truncated @str. |
| 1919 | */ |
| 1920 | static int tomoyo_truncate(char *str) |
| 1921 | { |
| 1922 | char *start = str; |
| 1923 | while (*(unsigned char *) str > (unsigned char) ' ') |
| 1924 | str++; |
| 1925 | *str = '\0'; |
| 1926 | return strlen(start) + 1; |
| 1927 | } |
| 1928 | |
| 1929 | /** |
Tetsuo Handa | eadd99c | 2011-06-26 23:18:58 +0900 | [diff] [blame] | 1930 | * tomoyo_add_entry - Add an ACL to current thread's domain. Used by learning mode. |
| 1931 | * |
| 1932 | * @domain: Pointer to "struct tomoyo_domain_info". |
| 1933 | * @header: Lines containing ACL. |
| 1934 | * |
| 1935 | * Returns nothing. |
| 1936 | */ |
| 1937 | static void tomoyo_add_entry(struct tomoyo_domain_info *domain, char *header) |
| 1938 | { |
| 1939 | char *buffer; |
Tetsuo Handa | 2ca9bf4 | 2011-07-08 13:23:44 +0900 | [diff] [blame] | 1940 | char *realpath = NULL; |
Tetsuo Handa | 5b63685 | 2011-07-08 13:24:54 +0900 | [diff] [blame] | 1941 | char *argv0 = NULL; |
Tetsuo Handa | 2ca9bf4 | 2011-07-08 13:23:44 +0900 | [diff] [blame] | 1942 | char *symlink = NULL; |
Tetsuo Handa | eadd99c | 2011-06-26 23:18:58 +0900 | [diff] [blame] | 1943 | char *cp = strchr(header, '\n'); |
| 1944 | int len; |
| 1945 | if (!cp) |
| 1946 | return; |
| 1947 | cp = strchr(cp + 1, '\n'); |
| 1948 | if (!cp) |
| 1949 | return; |
| 1950 | *cp++ = '\0'; |
| 1951 | len = strlen(cp) + 1; |
Tetsuo Handa | 2ca9bf4 | 2011-07-08 13:23:44 +0900 | [diff] [blame] | 1952 | /* strstr() will return NULL if ordering is wrong. */ |
| 1953 | if (*cp == 'f') { |
Tetsuo Handa | 5b63685 | 2011-07-08 13:24:54 +0900 | [diff] [blame] | 1954 | argv0 = strstr(header, " argv[]={ \""); |
| 1955 | if (argv0) { |
| 1956 | argv0 += 10; |
| 1957 | len += tomoyo_truncate(argv0) + 14; |
| 1958 | } |
Tetsuo Handa | 2ca9bf4 | 2011-07-08 13:23:44 +0900 | [diff] [blame] | 1959 | realpath = strstr(header, " exec={ realpath=\""); |
| 1960 | if (realpath) { |
| 1961 | realpath += 8; |
| 1962 | len += tomoyo_truncate(realpath) + 6; |
| 1963 | } |
| 1964 | symlink = strstr(header, " symlink.target=\""); |
| 1965 | if (symlink) |
| 1966 | len += tomoyo_truncate(symlink + 1) + 1; |
| 1967 | } |
Tetsuo Handa | eadd99c | 2011-06-26 23:18:58 +0900 | [diff] [blame] | 1968 | buffer = kmalloc(len, GFP_NOFS); |
| 1969 | if (!buffer) |
| 1970 | return; |
| 1971 | snprintf(buffer, len - 1, "%s", cp); |
Tetsuo Handa | 2ca9bf4 | 2011-07-08 13:23:44 +0900 | [diff] [blame] | 1972 | if (realpath) |
| 1973 | tomoyo_addprintf(buffer, len, " exec.%s", realpath); |
Tetsuo Handa | 5b63685 | 2011-07-08 13:24:54 +0900 | [diff] [blame] | 1974 | if (argv0) |
| 1975 | tomoyo_addprintf(buffer, len, " exec.argv[0]=%s", argv0); |
Tetsuo Handa | 2ca9bf4 | 2011-07-08 13:23:44 +0900 | [diff] [blame] | 1976 | if (symlink) |
| 1977 | tomoyo_addprintf(buffer, len, "%s", symlink); |
Tetsuo Handa | eadd99c | 2011-06-26 23:18:58 +0900 | [diff] [blame] | 1978 | tomoyo_normalize_line(buffer); |
Tetsuo Handa | b22b8b9 | 2011-06-26 23:21:50 +0900 | [diff] [blame] | 1979 | if (!tomoyo_write_domain2(domain->ns, &domain->acl_info_list, buffer, |
| 1980 | false)) |
| 1981 | tomoyo_update_stat(TOMOYO_STAT_POLICY_UPDATES); |
Tetsuo Handa | eadd99c | 2011-06-26 23:18:58 +0900 | [diff] [blame] | 1982 | kfree(buffer); |
| 1983 | } |
| 1984 | |
| 1985 | /** |
Tetsuo Handa | 17fcfbd | 2010-05-17 10:11:36 +0900 | [diff] [blame] | 1986 | * tomoyo_supervisor - Ask for the supervisor's decision. |
| 1987 | * |
Tetsuo Handa | eadd99c | 2011-06-26 23:18:58 +0900 | [diff] [blame] | 1988 | * @r: Pointer to "struct tomoyo_request_info". |
| 1989 | * @fmt: The printf()'s format string, followed by parameters. |
Tetsuo Handa | 17fcfbd | 2010-05-17 10:11:36 +0900 | [diff] [blame] | 1990 | * |
| 1991 | * Returns 0 if the supervisor decided to permit the access request which |
| 1992 | * violated the policy in enforcing mode, TOMOYO_RETRY_REQUEST if the |
| 1993 | * supervisor decided to retry the access request which violated the policy in |
| 1994 | * enforcing mode, 0 if it is not in enforcing mode, -EPERM otherwise. |
| 1995 | */ |
| 1996 | int tomoyo_supervisor(struct tomoyo_request_info *r, const char *fmt, ...) |
| 1997 | { |
| 1998 | va_list args; |
Tetsuo Handa | eadd99c | 2011-06-26 23:18:58 +0900 | [diff] [blame] | 1999 | int error; |
Tetsuo Handa | 17fcfbd | 2010-05-17 10:11:36 +0900 | [diff] [blame] | 2000 | int len; |
| 2001 | static unsigned int tomoyo_serial; |
Tetsuo Handa | eadd99c | 2011-06-26 23:18:58 +0900 | [diff] [blame] | 2002 | struct tomoyo_query entry = { }; |
Tetsuo Handa | 17fcfbd | 2010-05-17 10:11:36 +0900 | [diff] [blame] | 2003 | bool quota_exceeded = false; |
Tetsuo Handa | eadd99c | 2011-06-26 23:18:58 +0900 | [diff] [blame] | 2004 | va_start(args, fmt); |
| 2005 | len = vsnprintf((char *) &len, 1, fmt, args) + 1; |
| 2006 | va_end(args); |
| 2007 | /* Write /sys/kernel/security/tomoyo/audit. */ |
| 2008 | va_start(args, fmt); |
| 2009 | tomoyo_write_log2(r, len, fmt, args); |
| 2010 | va_end(args); |
| 2011 | /* Nothing more to do if granted. */ |
| 2012 | if (r->granted) |
| 2013 | return 0; |
Tetsuo Handa | b22b8b9 | 2011-06-26 23:21:50 +0900 | [diff] [blame] | 2014 | if (r->mode) |
| 2015 | tomoyo_update_stat(r->mode); |
Tetsuo Handa | 17fcfbd | 2010-05-17 10:11:36 +0900 | [diff] [blame] | 2016 | switch (r->mode) { |
Tetsuo Handa | eadd99c | 2011-06-26 23:18:58 +0900 | [diff] [blame] | 2017 | case TOMOYO_CONFIG_ENFORCING: |
| 2018 | error = -EPERM; |
| 2019 | if (atomic_read(&tomoyo_query_observers)) |
| 2020 | break; |
| 2021 | goto out; |
Tetsuo Handa | 17fcfbd | 2010-05-17 10:11:36 +0900 | [diff] [blame] | 2022 | case TOMOYO_CONFIG_LEARNING: |
Tetsuo Handa | eadd99c | 2011-06-26 23:18:58 +0900 | [diff] [blame] | 2023 | error = 0; |
| 2024 | /* Check max_learning_entry parameter. */ |
| 2025 | if (tomoyo_domain_quota_is_ok(r)) |
| 2026 | break; |
Tetsuo Handa | 17fcfbd | 2010-05-17 10:11:36 +0900 | [diff] [blame] | 2027 | /* fall through */ |
Tetsuo Handa | eadd99c | 2011-06-26 23:18:58 +0900 | [diff] [blame] | 2028 | default: |
Tetsuo Handa | 17fcfbd | 2010-05-17 10:11:36 +0900 | [diff] [blame] | 2029 | return 0; |
| 2030 | } |
Tetsuo Handa | eadd99c | 2011-06-26 23:18:58 +0900 | [diff] [blame] | 2031 | /* Get message. */ |
Tetsuo Handa | 17fcfbd | 2010-05-17 10:11:36 +0900 | [diff] [blame] | 2032 | va_start(args, fmt); |
Tetsuo Handa | eadd99c | 2011-06-26 23:18:58 +0900 | [diff] [blame] | 2033 | entry.query = tomoyo_init_log(r, len, fmt, args); |
Tetsuo Handa | 17fcfbd | 2010-05-17 10:11:36 +0900 | [diff] [blame] | 2034 | va_end(args); |
Tetsuo Handa | eadd99c | 2011-06-26 23:18:58 +0900 | [diff] [blame] | 2035 | if (!entry.query) |
Tetsuo Handa | 17fcfbd | 2010-05-17 10:11:36 +0900 | [diff] [blame] | 2036 | goto out; |
Tetsuo Handa | eadd99c | 2011-06-26 23:18:58 +0900 | [diff] [blame] | 2037 | entry.query_len = strlen(entry.query) + 1; |
| 2038 | if (!error) { |
| 2039 | tomoyo_add_entry(r->domain, entry.query); |
Tetsuo Handa | 17fcfbd | 2010-05-17 10:11:36 +0900 | [diff] [blame] | 2040 | goto out; |
Tetsuo Handa | eadd99c | 2011-06-26 23:18:58 +0900 | [diff] [blame] | 2041 | } |
| 2042 | len = tomoyo_round2(entry.query_len); |
Tetsuo Handa | 59df316 | 2011-10-20 06:48:57 +0900 | [diff] [blame] | 2043 | entry.domain = r->domain; |
Tetsuo Handa | 17fcfbd | 2010-05-17 10:11:36 +0900 | [diff] [blame] | 2044 | spin_lock(&tomoyo_query_list_lock); |
Tetsuo Handa | eadd99c | 2011-06-26 23:18:58 +0900 | [diff] [blame] | 2045 | if (tomoyo_memory_quota[TOMOYO_MEMORY_QUERY] && |
| 2046 | tomoyo_memory_used[TOMOYO_MEMORY_QUERY] + len |
| 2047 | >= tomoyo_memory_quota[TOMOYO_MEMORY_QUERY]) { |
Tetsuo Handa | 17fcfbd | 2010-05-17 10:11:36 +0900 | [diff] [blame] | 2048 | quota_exceeded = true; |
| 2049 | } else { |
Tetsuo Handa | eadd99c | 2011-06-26 23:18:58 +0900 | [diff] [blame] | 2050 | entry.serial = tomoyo_serial++; |
| 2051 | entry.retry = r->retry; |
| 2052 | tomoyo_memory_used[TOMOYO_MEMORY_QUERY] += len; |
| 2053 | list_add_tail(&entry.list, &tomoyo_query_list); |
Tetsuo Handa | 17fcfbd | 2010-05-17 10:11:36 +0900 | [diff] [blame] | 2054 | } |
| 2055 | spin_unlock(&tomoyo_query_list_lock); |
| 2056 | if (quota_exceeded) |
| 2057 | goto out; |
Tetsuo Handa | 17fcfbd | 2010-05-17 10:11:36 +0900 | [diff] [blame] | 2058 | /* Give 10 seconds for supervisor's opinion. */ |
Tetsuo Handa | eadd99c | 2011-06-26 23:18:58 +0900 | [diff] [blame] | 2059 | while (entry.timer < 10) { |
| 2060 | wake_up_all(&tomoyo_query_wait); |
| 2061 | if (wait_event_interruptible_timeout |
| 2062 | (tomoyo_answer_wait, entry.answer || |
| 2063 | !atomic_read(&tomoyo_query_observers), HZ)) |
Tetsuo Handa | 17fcfbd | 2010-05-17 10:11:36 +0900 | [diff] [blame] | 2064 | break; |
Tetsuo Handa | eadd99c | 2011-06-26 23:18:58 +0900 | [diff] [blame] | 2065 | else |
| 2066 | entry.timer++; |
Tetsuo Handa | 17fcfbd | 2010-05-17 10:11:36 +0900 | [diff] [blame] | 2067 | } |
| 2068 | spin_lock(&tomoyo_query_list_lock); |
Tetsuo Handa | eadd99c | 2011-06-26 23:18:58 +0900 | [diff] [blame] | 2069 | list_del(&entry.list); |
| 2070 | tomoyo_memory_used[TOMOYO_MEMORY_QUERY] -= len; |
Tetsuo Handa | 17fcfbd | 2010-05-17 10:11:36 +0900 | [diff] [blame] | 2071 | spin_unlock(&tomoyo_query_list_lock); |
Tetsuo Handa | eadd99c | 2011-06-26 23:18:58 +0900 | [diff] [blame] | 2072 | switch (entry.answer) { |
Tetsuo Handa | 17fcfbd | 2010-05-17 10:11:36 +0900 | [diff] [blame] | 2073 | case 3: /* Asked to retry by administrator. */ |
| 2074 | error = TOMOYO_RETRY_REQUEST; |
| 2075 | r->retry++; |
| 2076 | break; |
| 2077 | case 1: |
| 2078 | /* Granted by administrator. */ |
| 2079 | error = 0; |
| 2080 | break; |
Tetsuo Handa | 17fcfbd | 2010-05-17 10:11:36 +0900 | [diff] [blame] | 2081 | default: |
Tetsuo Handa | eadd99c | 2011-06-26 23:18:58 +0900 | [diff] [blame] | 2082 | /* Timed out or rejected by administrator. */ |
Tetsuo Handa | 17fcfbd | 2010-05-17 10:11:36 +0900 | [diff] [blame] | 2083 | break; |
| 2084 | } |
Tetsuo Handa | eadd99c | 2011-06-26 23:18:58 +0900 | [diff] [blame] | 2085 | out: |
| 2086 | kfree(entry.query); |
Tetsuo Handa | 17fcfbd | 2010-05-17 10:11:36 +0900 | [diff] [blame] | 2087 | return error; |
| 2088 | } |
| 2089 | |
| 2090 | /** |
Tetsuo Handa | 59df316 | 2011-10-20 06:48:57 +0900 | [diff] [blame] | 2091 | * tomoyo_find_domain_by_qid - Get domain by query id. |
| 2092 | * |
| 2093 | * @serial: Query ID assigned by tomoyo_supervisor(). |
| 2094 | * |
| 2095 | * Returns pointer to "struct tomoyo_domain_info" if found, NULL otherwise. |
| 2096 | */ |
| 2097 | static struct tomoyo_domain_info *tomoyo_find_domain_by_qid |
| 2098 | (unsigned int serial) |
| 2099 | { |
| 2100 | struct tomoyo_query *ptr; |
| 2101 | struct tomoyo_domain_info *domain = NULL; |
| 2102 | spin_lock(&tomoyo_query_list_lock); |
| 2103 | list_for_each_entry(ptr, &tomoyo_query_list, list) { |
Tetsuo Handa | 6041e83 | 2012-03-14 18:27:49 +0900 | [diff] [blame] | 2104 | if (ptr->serial != serial) |
Tetsuo Handa | 59df316 | 2011-10-20 06:48:57 +0900 | [diff] [blame] | 2105 | continue; |
| 2106 | domain = ptr->domain; |
| 2107 | break; |
| 2108 | } |
| 2109 | spin_unlock(&tomoyo_query_list_lock); |
| 2110 | return domain; |
| 2111 | } |
| 2112 | |
| 2113 | /** |
Tetsuo Handa | 17fcfbd | 2010-05-17 10:11:36 +0900 | [diff] [blame] | 2114 | * tomoyo_poll_query - poll() for /sys/kernel/security/tomoyo/query. |
| 2115 | * |
| 2116 | * @file: Pointer to "struct file". |
| 2117 | * @wait: Pointer to "poll_table". |
| 2118 | * |
Linus Torvalds | a9a0884 | 2018-02-11 14:34:03 -0800 | [diff] [blame] | 2119 | * Returns EPOLLIN | EPOLLRDNORM when ready to read, 0 otherwise. |
Tetsuo Handa | 17fcfbd | 2010-05-17 10:11:36 +0900 | [diff] [blame] | 2120 | * |
| 2121 | * Waits for access requests which violated policy in enforcing mode. |
| 2122 | */ |
Al Viro | c0d4be2 | 2017-07-02 23:32:02 -0400 | [diff] [blame] | 2123 | static __poll_t tomoyo_poll_query(struct file *file, poll_table *wait) |
Tetsuo Handa | 17fcfbd | 2010-05-17 10:11:36 +0900 | [diff] [blame] | 2124 | { |
Tetsuo Handa | 6041e83 | 2012-03-14 18:27:49 +0900 | [diff] [blame] | 2125 | if (!list_empty(&tomoyo_query_list)) |
Linus Torvalds | a9a0884 | 2018-02-11 14:34:03 -0800 | [diff] [blame] | 2126 | return EPOLLIN | EPOLLRDNORM; |
Tetsuo Handa | 6041e83 | 2012-03-14 18:27:49 +0900 | [diff] [blame] | 2127 | poll_wait(file, &tomoyo_query_wait, wait); |
| 2128 | if (!list_empty(&tomoyo_query_list)) |
Linus Torvalds | a9a0884 | 2018-02-11 14:34:03 -0800 | [diff] [blame] | 2129 | return EPOLLIN | EPOLLRDNORM; |
Tetsuo Handa | 17fcfbd | 2010-05-17 10:11:36 +0900 | [diff] [blame] | 2130 | return 0; |
| 2131 | } |
| 2132 | |
| 2133 | /** |
| 2134 | * tomoyo_read_query - Read access requests which violated policy in enforcing mode. |
| 2135 | * |
| 2136 | * @head: Pointer to "struct tomoyo_io_buffer". |
Tetsuo Handa | 17fcfbd | 2010-05-17 10:11:36 +0900 | [diff] [blame] | 2137 | */ |
Tetsuo Handa | 8fbe71f | 2010-06-16 16:29:59 +0900 | [diff] [blame] | 2138 | static void tomoyo_read_query(struct tomoyo_io_buffer *head) |
Tetsuo Handa | 17fcfbd | 2010-05-17 10:11:36 +0900 | [diff] [blame] | 2139 | { |
| 2140 | struct list_head *tmp; |
Tetsuo Handa | 2c47ab9 | 2011-06-26 23:21:19 +0900 | [diff] [blame] | 2141 | unsigned int pos = 0; |
| 2142 | size_t len = 0; |
Tetsuo Handa | 17fcfbd | 2010-05-17 10:11:36 +0900 | [diff] [blame] | 2143 | char *buf; |
Tetsuo Handa | f23571e | 2010-06-24 14:57:16 +0900 | [diff] [blame] | 2144 | if (head->r.w_pos) |
Tetsuo Handa | 8fbe71f | 2010-06-16 16:29:59 +0900 | [diff] [blame] | 2145 | return; |
Tetsuo Handa | 17fcfbd | 2010-05-17 10:11:36 +0900 | [diff] [blame] | 2146 | if (head->read_buf) { |
| 2147 | kfree(head->read_buf); |
| 2148 | head->read_buf = NULL; |
Tetsuo Handa | 17fcfbd | 2010-05-17 10:11:36 +0900 | [diff] [blame] | 2149 | } |
| 2150 | spin_lock(&tomoyo_query_list_lock); |
| 2151 | list_for_each(tmp, &tomoyo_query_list) { |
Tetsuo Handa | e2bf690 | 2010-06-25 11:16:00 +0900 | [diff] [blame] | 2152 | struct tomoyo_query *ptr = list_entry(tmp, typeof(*ptr), list); |
Tetsuo Handa | f23571e | 2010-06-24 14:57:16 +0900 | [diff] [blame] | 2153 | if (pos++ != head->r.query_index) |
Tetsuo Handa | 17fcfbd | 2010-05-17 10:11:36 +0900 | [diff] [blame] | 2154 | continue; |
| 2155 | len = ptr->query_len; |
| 2156 | break; |
| 2157 | } |
| 2158 | spin_unlock(&tomoyo_query_list_lock); |
| 2159 | if (!len) { |
Tetsuo Handa | f23571e | 2010-06-24 14:57:16 +0900 | [diff] [blame] | 2160 | head->r.query_index = 0; |
Tetsuo Handa | 8fbe71f | 2010-06-16 16:29:59 +0900 | [diff] [blame] | 2161 | return; |
Tetsuo Handa | 17fcfbd | 2010-05-17 10:11:36 +0900 | [diff] [blame] | 2162 | } |
Tetsuo Handa | eadd99c | 2011-06-26 23:18:58 +0900 | [diff] [blame] | 2163 | buf = kzalloc(len + 32, GFP_NOFS); |
Tetsuo Handa | 17fcfbd | 2010-05-17 10:11:36 +0900 | [diff] [blame] | 2164 | if (!buf) |
Tetsuo Handa | 8fbe71f | 2010-06-16 16:29:59 +0900 | [diff] [blame] | 2165 | return; |
Tetsuo Handa | 17fcfbd | 2010-05-17 10:11:36 +0900 | [diff] [blame] | 2166 | pos = 0; |
| 2167 | spin_lock(&tomoyo_query_list_lock); |
| 2168 | list_for_each(tmp, &tomoyo_query_list) { |
Tetsuo Handa | e2bf690 | 2010-06-25 11:16:00 +0900 | [diff] [blame] | 2169 | struct tomoyo_query *ptr = list_entry(tmp, typeof(*ptr), list); |
Tetsuo Handa | f23571e | 2010-06-24 14:57:16 +0900 | [diff] [blame] | 2170 | if (pos++ != head->r.query_index) |
Tetsuo Handa | 17fcfbd | 2010-05-17 10:11:36 +0900 | [diff] [blame] | 2171 | continue; |
| 2172 | /* |
| 2173 | * Some query can be skipped because tomoyo_query_list |
| 2174 | * can change, but I don't care. |
| 2175 | */ |
| 2176 | if (len == ptr->query_len) |
Tetsuo Handa | eadd99c | 2011-06-26 23:18:58 +0900 | [diff] [blame] | 2177 | snprintf(buf, len + 31, "Q%u-%hu\n%s", ptr->serial, |
| 2178 | ptr->retry, ptr->query); |
Tetsuo Handa | 17fcfbd | 2010-05-17 10:11:36 +0900 | [diff] [blame] | 2179 | break; |
| 2180 | } |
| 2181 | spin_unlock(&tomoyo_query_list_lock); |
| 2182 | if (buf[0]) { |
Tetsuo Handa | 17fcfbd | 2010-05-17 10:11:36 +0900 | [diff] [blame] | 2183 | head->read_buf = buf; |
Tetsuo Handa | f23571e | 2010-06-24 14:57:16 +0900 | [diff] [blame] | 2184 | head->r.w[head->r.w_pos++] = buf; |
| 2185 | head->r.query_index++; |
Tetsuo Handa | 17fcfbd | 2010-05-17 10:11:36 +0900 | [diff] [blame] | 2186 | } else { |
| 2187 | kfree(buf); |
| 2188 | } |
Tetsuo Handa | 17fcfbd | 2010-05-17 10:11:36 +0900 | [diff] [blame] | 2189 | } |
| 2190 | |
| 2191 | /** |
| 2192 | * tomoyo_write_answer - Write the supervisor's decision. |
| 2193 | * |
| 2194 | * @head: Pointer to "struct tomoyo_io_buffer". |
| 2195 | * |
| 2196 | * Returns 0 on success, -EINVAL otherwise. |
| 2197 | */ |
| 2198 | static int tomoyo_write_answer(struct tomoyo_io_buffer *head) |
| 2199 | { |
| 2200 | char *data = head->write_buf; |
| 2201 | struct list_head *tmp; |
| 2202 | unsigned int serial; |
| 2203 | unsigned int answer; |
| 2204 | spin_lock(&tomoyo_query_list_lock); |
| 2205 | list_for_each(tmp, &tomoyo_query_list) { |
Tetsuo Handa | e2bf690 | 2010-06-25 11:16:00 +0900 | [diff] [blame] | 2206 | struct tomoyo_query *ptr = list_entry(tmp, typeof(*ptr), list); |
Tetsuo Handa | 17fcfbd | 2010-05-17 10:11:36 +0900 | [diff] [blame] | 2207 | ptr->timer = 0; |
| 2208 | } |
| 2209 | spin_unlock(&tomoyo_query_list_lock); |
| 2210 | if (sscanf(data, "A%u=%u", &serial, &answer) != 2) |
| 2211 | return -EINVAL; |
| 2212 | spin_lock(&tomoyo_query_list_lock); |
| 2213 | list_for_each(tmp, &tomoyo_query_list) { |
Tetsuo Handa | e2bf690 | 2010-06-25 11:16:00 +0900 | [diff] [blame] | 2214 | struct tomoyo_query *ptr = list_entry(tmp, typeof(*ptr), list); |
Tetsuo Handa | 17fcfbd | 2010-05-17 10:11:36 +0900 | [diff] [blame] | 2215 | if (ptr->serial != serial) |
| 2216 | continue; |
Tetsuo Handa | 6041e83 | 2012-03-14 18:27:49 +0900 | [diff] [blame] | 2217 | ptr->answer = answer; |
| 2218 | /* Remove from tomoyo_query_list. */ |
| 2219 | if (ptr->answer) |
| 2220 | list_del_init(&ptr->list); |
Tetsuo Handa | 17fcfbd | 2010-05-17 10:11:36 +0900 | [diff] [blame] | 2221 | break; |
| 2222 | } |
| 2223 | spin_unlock(&tomoyo_query_list_lock); |
| 2224 | return 0; |
| 2225 | } |
| 2226 | |
| 2227 | /** |
Kentaro Takeda | 9590837 | 2009-02-05 17:18:13 +0900 | [diff] [blame] | 2228 | * tomoyo_read_version: Get version. |
| 2229 | * |
| 2230 | * @head: Pointer to "struct tomoyo_io_buffer". |
| 2231 | * |
| 2232 | * Returns version information. |
| 2233 | */ |
Tetsuo Handa | 8fbe71f | 2010-06-16 16:29:59 +0900 | [diff] [blame] | 2234 | static void tomoyo_read_version(struct tomoyo_io_buffer *head) |
Kentaro Takeda | 9590837 | 2009-02-05 17:18:13 +0900 | [diff] [blame] | 2235 | { |
Tetsuo Handa | f23571e | 2010-06-24 14:57:16 +0900 | [diff] [blame] | 2236 | if (!head->r.eof) { |
Tetsuo Handa | 843d183 | 2011-09-14 17:03:19 +0900 | [diff] [blame] | 2237 | tomoyo_io_printf(head, "2.5.0"); |
Tetsuo Handa | f23571e | 2010-06-24 14:57:16 +0900 | [diff] [blame] | 2238 | head->r.eof = true; |
Kentaro Takeda | 9590837 | 2009-02-05 17:18:13 +0900 | [diff] [blame] | 2239 | } |
Kentaro Takeda | 9590837 | 2009-02-05 17:18:13 +0900 | [diff] [blame] | 2240 | } |
| 2241 | |
Tetsuo Handa | b22b8b9 | 2011-06-26 23:21:50 +0900 | [diff] [blame] | 2242 | /* String table for /sys/kernel/security/tomoyo/stat interface. */ |
| 2243 | static const char * const tomoyo_policy_headers[TOMOYO_MAX_POLICY_STAT] = { |
| 2244 | [TOMOYO_STAT_POLICY_UPDATES] = "update:", |
| 2245 | [TOMOYO_STAT_POLICY_LEARNING] = "violation in learning mode:", |
| 2246 | [TOMOYO_STAT_POLICY_PERMISSIVE] = "violation in permissive mode:", |
| 2247 | [TOMOYO_STAT_POLICY_ENFORCING] = "violation in enforcing mode:", |
| 2248 | }; |
| 2249 | |
| 2250 | /* String table for /sys/kernel/security/tomoyo/stat interface. */ |
| 2251 | static const char * const tomoyo_memory_headers[TOMOYO_MAX_MEMORY_STAT] = { |
| 2252 | [TOMOYO_MEMORY_POLICY] = "policy:", |
| 2253 | [TOMOYO_MEMORY_AUDIT] = "audit log:", |
| 2254 | [TOMOYO_MEMORY_QUERY] = "query message:", |
| 2255 | }; |
| 2256 | |
| 2257 | /* Timestamp counter for last updated. */ |
| 2258 | static unsigned int tomoyo_stat_updated[TOMOYO_MAX_POLICY_STAT]; |
| 2259 | /* Counter for number of updates. */ |
Arnd Bergmann | 9273409 | 2017-10-19 14:29:04 +0200 | [diff] [blame] | 2260 | static time64_t tomoyo_stat_modified[TOMOYO_MAX_POLICY_STAT]; |
Tetsuo Handa | b22b8b9 | 2011-06-26 23:21:50 +0900 | [diff] [blame] | 2261 | |
| 2262 | /** |
| 2263 | * tomoyo_update_stat - Update statistic counters. |
| 2264 | * |
| 2265 | * @index: Index for policy type. |
| 2266 | * |
| 2267 | * Returns nothing. |
| 2268 | */ |
| 2269 | void tomoyo_update_stat(const u8 index) |
| 2270 | { |
Tetsuo Handa | b22b8b9 | 2011-06-26 23:21:50 +0900 | [diff] [blame] | 2271 | /* |
| 2272 | * I don't use atomic operations because race condition is not fatal. |
| 2273 | */ |
| 2274 | tomoyo_stat_updated[index]++; |
Arnd Bergmann | 9273409 | 2017-10-19 14:29:04 +0200 | [diff] [blame] | 2275 | tomoyo_stat_modified[index] = ktime_get_real_seconds(); |
Tetsuo Handa | b22b8b9 | 2011-06-26 23:21:50 +0900 | [diff] [blame] | 2276 | } |
| 2277 | |
| 2278 | /** |
| 2279 | * tomoyo_read_stat - Read statistic data. |
| 2280 | * |
| 2281 | * @head: Pointer to "struct tomoyo_io_buffer". |
| 2282 | * |
| 2283 | * Returns nothing. |
| 2284 | */ |
| 2285 | static void tomoyo_read_stat(struct tomoyo_io_buffer *head) |
| 2286 | { |
| 2287 | u8 i; |
| 2288 | unsigned int total = 0; |
| 2289 | if (head->r.eof) |
| 2290 | return; |
| 2291 | for (i = 0; i < TOMOYO_MAX_POLICY_STAT; i++) { |
| 2292 | tomoyo_io_printf(head, "Policy %-30s %10u", |
| 2293 | tomoyo_policy_headers[i], |
| 2294 | tomoyo_stat_updated[i]); |
| 2295 | if (tomoyo_stat_modified[i]) { |
| 2296 | struct tomoyo_time stamp; |
| 2297 | tomoyo_convert_time(tomoyo_stat_modified[i], &stamp); |
| 2298 | tomoyo_io_printf(head, " (Last: %04u/%02u/%02u " |
| 2299 | "%02u:%02u:%02u)", |
| 2300 | stamp.year, stamp.month, stamp.day, |
| 2301 | stamp.hour, stamp.min, stamp.sec); |
| 2302 | } |
| 2303 | tomoyo_set_lf(head); |
| 2304 | } |
| 2305 | for (i = 0; i < TOMOYO_MAX_MEMORY_STAT; i++) { |
| 2306 | unsigned int used = tomoyo_memory_used[i]; |
| 2307 | total += used; |
| 2308 | tomoyo_io_printf(head, "Memory used by %-22s %10u", |
| 2309 | tomoyo_memory_headers[i], used); |
| 2310 | used = tomoyo_memory_quota[i]; |
| 2311 | if (used) |
| 2312 | tomoyo_io_printf(head, " (Quota: %10u)", used); |
| 2313 | tomoyo_set_lf(head); |
| 2314 | } |
| 2315 | tomoyo_io_printf(head, "Total memory used: %10u\n", |
| 2316 | total); |
| 2317 | head->r.eof = true; |
| 2318 | } |
| 2319 | |
| 2320 | /** |
| 2321 | * tomoyo_write_stat - Set memory quota. |
| 2322 | * |
| 2323 | * @head: Pointer to "struct tomoyo_io_buffer". |
| 2324 | * |
| 2325 | * Returns 0. |
| 2326 | */ |
| 2327 | static int tomoyo_write_stat(struct tomoyo_io_buffer *head) |
| 2328 | { |
| 2329 | char *data = head->write_buf; |
| 2330 | u8 i; |
| 2331 | if (tomoyo_str_starts(&data, "Memory used by ")) |
| 2332 | for (i = 0; i < TOMOYO_MAX_MEMORY_STAT; i++) |
| 2333 | if (tomoyo_str_starts(&data, tomoyo_memory_headers[i])) |
| 2334 | sscanf(data, "%u", &tomoyo_memory_quota[i]); |
| 2335 | return 0; |
| 2336 | } |
| 2337 | |
Kentaro Takeda | 9590837 | 2009-02-05 17:18:13 +0900 | [diff] [blame] | 2338 | /** |
| 2339 | * tomoyo_open_control - open() for /sys/kernel/security/tomoyo/ interface. |
| 2340 | * |
| 2341 | * @type: Type of interface. |
| 2342 | * @file: Pointer to "struct file". |
| 2343 | * |
Tetsuo Handa | 2e503bb | 2011-06-26 23:20:55 +0900 | [diff] [blame] | 2344 | * Returns 0 on success, negative value otherwise. |
Kentaro Takeda | 9590837 | 2009-02-05 17:18:13 +0900 | [diff] [blame] | 2345 | */ |
Tetsuo Handa | c3ef150 | 2010-05-17 10:12:46 +0900 | [diff] [blame] | 2346 | int tomoyo_open_control(const u8 type, struct file *file) |
Kentaro Takeda | 9590837 | 2009-02-05 17:18:13 +0900 | [diff] [blame] | 2347 | { |
Tetsuo Handa | 4e5d6f7 | 2010-04-28 14:17:42 +0900 | [diff] [blame] | 2348 | struct tomoyo_io_buffer *head = kzalloc(sizeof(*head), GFP_NOFS); |
Kentaro Takeda | 9590837 | 2009-02-05 17:18:13 +0900 | [diff] [blame] | 2349 | |
| 2350 | if (!head) |
| 2351 | return -ENOMEM; |
| 2352 | mutex_init(&head->io_sem); |
Tetsuo Handa | 17fcfbd | 2010-05-17 10:11:36 +0900 | [diff] [blame] | 2353 | head->type = type; |
Kentaro Takeda | 9590837 | 2009-02-05 17:18:13 +0900 | [diff] [blame] | 2354 | switch (type) { |
| 2355 | case TOMOYO_DOMAINPOLICY: |
| 2356 | /* /sys/kernel/security/tomoyo/domain_policy */ |
Tetsuo Handa | e2bf690 | 2010-06-25 11:16:00 +0900 | [diff] [blame] | 2357 | head->write = tomoyo_write_domain; |
| 2358 | head->read = tomoyo_read_domain; |
Kentaro Takeda | 9590837 | 2009-02-05 17:18:13 +0900 | [diff] [blame] | 2359 | break; |
| 2360 | case TOMOYO_EXCEPTIONPOLICY: |
| 2361 | /* /sys/kernel/security/tomoyo/exception_policy */ |
Tetsuo Handa | e2bf690 | 2010-06-25 11:16:00 +0900 | [diff] [blame] | 2362 | head->write = tomoyo_write_exception; |
| 2363 | head->read = tomoyo_read_exception; |
Kentaro Takeda | 9590837 | 2009-02-05 17:18:13 +0900 | [diff] [blame] | 2364 | break; |
Tetsuo Handa | eadd99c | 2011-06-26 23:18:58 +0900 | [diff] [blame] | 2365 | case TOMOYO_AUDIT: |
| 2366 | /* /sys/kernel/security/tomoyo/audit */ |
| 2367 | head->poll = tomoyo_poll_log; |
| 2368 | head->read = tomoyo_read_log; |
| 2369 | break; |
Kentaro Takeda | 9590837 | 2009-02-05 17:18:13 +0900 | [diff] [blame] | 2370 | case TOMOYO_PROCESS_STATUS: |
| 2371 | /* /sys/kernel/security/tomoyo/.process_status */ |
| 2372 | head->write = tomoyo_write_pid; |
| 2373 | head->read = tomoyo_read_pid; |
| 2374 | break; |
| 2375 | case TOMOYO_VERSION: |
| 2376 | /* /sys/kernel/security/tomoyo/version */ |
| 2377 | head->read = tomoyo_read_version; |
| 2378 | head->readbuf_size = 128; |
| 2379 | break; |
Tetsuo Handa | b22b8b9 | 2011-06-26 23:21:50 +0900 | [diff] [blame] | 2380 | case TOMOYO_STAT: |
| 2381 | /* /sys/kernel/security/tomoyo/stat */ |
| 2382 | head->write = tomoyo_write_stat; |
| 2383 | head->read = tomoyo_read_stat; |
| 2384 | head->readbuf_size = 1024; |
Kentaro Takeda | 9590837 | 2009-02-05 17:18:13 +0900 | [diff] [blame] | 2385 | break; |
| 2386 | case TOMOYO_PROFILE: |
| 2387 | /* /sys/kernel/security/tomoyo/profile */ |
| 2388 | head->write = tomoyo_write_profile; |
| 2389 | head->read = tomoyo_read_profile; |
| 2390 | break; |
Tetsuo Handa | 17fcfbd | 2010-05-17 10:11:36 +0900 | [diff] [blame] | 2391 | case TOMOYO_QUERY: /* /sys/kernel/security/tomoyo/query */ |
| 2392 | head->poll = tomoyo_poll_query; |
| 2393 | head->write = tomoyo_write_answer; |
| 2394 | head->read = tomoyo_read_query; |
| 2395 | break; |
Kentaro Takeda | 9590837 | 2009-02-05 17:18:13 +0900 | [diff] [blame] | 2396 | case TOMOYO_MANAGER: |
| 2397 | /* /sys/kernel/security/tomoyo/manager */ |
Tetsuo Handa | e2bf690 | 2010-06-25 11:16:00 +0900 | [diff] [blame] | 2398 | head->write = tomoyo_write_manager; |
| 2399 | head->read = tomoyo_read_manager; |
Kentaro Takeda | 9590837 | 2009-02-05 17:18:13 +0900 | [diff] [blame] | 2400 | break; |
| 2401 | } |
| 2402 | if (!(file->f_mode & FMODE_READ)) { |
| 2403 | /* |
| 2404 | * No need to allocate read_buf since it is not opened |
| 2405 | * for reading. |
| 2406 | */ |
| 2407 | head->read = NULL; |
Tetsuo Handa | 17fcfbd | 2010-05-17 10:11:36 +0900 | [diff] [blame] | 2408 | head->poll = NULL; |
| 2409 | } else if (!head->poll) { |
| 2410 | /* Don't allocate read_buf for poll() access. */ |
Kentaro Takeda | 9590837 | 2009-02-05 17:18:13 +0900 | [diff] [blame] | 2411 | if (!head->readbuf_size) |
| 2412 | head->readbuf_size = 4096 * 2; |
Tetsuo Handa | 4e5d6f7 | 2010-04-28 14:17:42 +0900 | [diff] [blame] | 2413 | head->read_buf = kzalloc(head->readbuf_size, GFP_NOFS); |
Kentaro Takeda | 9590837 | 2009-02-05 17:18:13 +0900 | [diff] [blame] | 2414 | if (!head->read_buf) { |
Tetsuo Handa | 8e2d39a | 2010-01-26 20:45:27 +0900 | [diff] [blame] | 2415 | kfree(head); |
Kentaro Takeda | 9590837 | 2009-02-05 17:18:13 +0900 | [diff] [blame] | 2416 | return -ENOMEM; |
| 2417 | } |
| 2418 | } |
| 2419 | if (!(file->f_mode & FMODE_WRITE)) { |
| 2420 | /* |
| 2421 | * No need to allocate write_buf since it is not opened |
| 2422 | * for writing. |
| 2423 | */ |
| 2424 | head->write = NULL; |
| 2425 | } else if (head->write) { |
| 2426 | head->writebuf_size = 4096 * 2; |
Tetsuo Handa | 4e5d6f7 | 2010-04-28 14:17:42 +0900 | [diff] [blame] | 2427 | head->write_buf = kzalloc(head->writebuf_size, GFP_NOFS); |
Kentaro Takeda | 9590837 | 2009-02-05 17:18:13 +0900 | [diff] [blame] | 2428 | if (!head->write_buf) { |
Tetsuo Handa | 8e2d39a | 2010-01-26 20:45:27 +0900 | [diff] [blame] | 2429 | kfree(head->read_buf); |
| 2430 | kfree(head); |
Kentaro Takeda | 9590837 | 2009-02-05 17:18:13 +0900 | [diff] [blame] | 2431 | return -ENOMEM; |
| 2432 | } |
| 2433 | } |
Kentaro Takeda | 9590837 | 2009-02-05 17:18:13 +0900 | [diff] [blame] | 2434 | /* |
Tetsuo Handa | 17fcfbd | 2010-05-17 10:11:36 +0900 | [diff] [blame] | 2435 | * If the file is /sys/kernel/security/tomoyo/query , increment the |
| 2436 | * observer counter. |
| 2437 | * The obserber counter is used by tomoyo_supervisor() to see if |
| 2438 | * there is some process monitoring /sys/kernel/security/tomoyo/query. |
| 2439 | */ |
Tetsuo Handa | 7c75964 | 2011-06-26 23:15:31 +0900 | [diff] [blame] | 2440 | if (type == TOMOYO_QUERY) |
Tetsuo Handa | 17fcfbd | 2010-05-17 10:11:36 +0900 | [diff] [blame] | 2441 | atomic_inc(&tomoyo_query_observers); |
Tetsuo Handa | 2e503bb | 2011-06-26 23:20:55 +0900 | [diff] [blame] | 2442 | file->private_data = head; |
| 2443 | tomoyo_notify_gc(head, true); |
Kentaro Takeda | 9590837 | 2009-02-05 17:18:13 +0900 | [diff] [blame] | 2444 | return 0; |
| 2445 | } |
| 2446 | |
| 2447 | /** |
Tetsuo Handa | 0849e3b | 2010-06-25 12:22:09 +0900 | [diff] [blame] | 2448 | * tomoyo_poll_control - poll() for /sys/kernel/security/tomoyo/ interface. |
| 2449 | * |
| 2450 | * @file: Pointer to "struct file". |
Tetsuo Handa | 6041e83 | 2012-03-14 18:27:49 +0900 | [diff] [blame] | 2451 | * @wait: Pointer to "poll_table". Maybe NULL. |
Tetsuo Handa | 0849e3b | 2010-06-25 12:22:09 +0900 | [diff] [blame] | 2452 | * |
Linus Torvalds | a9a0884 | 2018-02-11 14:34:03 -0800 | [diff] [blame] | 2453 | * Returns EPOLLIN | EPOLLRDNORM | EPOLLOUT | EPOLLWRNORM if ready to read/write, |
| 2454 | * EPOLLOUT | EPOLLWRNORM otherwise. |
Tetsuo Handa | 0849e3b | 2010-06-25 12:22:09 +0900 | [diff] [blame] | 2455 | */ |
Al Viro | c0d4be2 | 2017-07-02 23:32:02 -0400 | [diff] [blame] | 2456 | __poll_t tomoyo_poll_control(struct file *file, poll_table *wait) |
Tetsuo Handa | 0849e3b | 2010-06-25 12:22:09 +0900 | [diff] [blame] | 2457 | { |
| 2458 | struct tomoyo_io_buffer *head = file->private_data; |
Tetsuo Handa | 6041e83 | 2012-03-14 18:27:49 +0900 | [diff] [blame] | 2459 | if (head->poll) |
Linus Torvalds | a9a0884 | 2018-02-11 14:34:03 -0800 | [diff] [blame] | 2460 | return head->poll(file, wait) | EPOLLOUT | EPOLLWRNORM; |
| 2461 | return EPOLLIN | EPOLLRDNORM | EPOLLOUT | EPOLLWRNORM; |
Tetsuo Handa | 0849e3b | 2010-06-25 12:22:09 +0900 | [diff] [blame] | 2462 | } |
| 2463 | |
| 2464 | /** |
Tetsuo Handa | bd03a3e | 2011-06-26 23:19:52 +0900 | [diff] [blame] | 2465 | * tomoyo_set_namespace_cursor - Set namespace to read. |
| 2466 | * |
| 2467 | * @head: Pointer to "struct tomoyo_io_buffer". |
| 2468 | * |
| 2469 | * Returns nothing. |
| 2470 | */ |
| 2471 | static inline void tomoyo_set_namespace_cursor(struct tomoyo_io_buffer *head) |
| 2472 | { |
| 2473 | struct list_head *ns; |
| 2474 | if (head->type != TOMOYO_EXCEPTIONPOLICY && |
| 2475 | head->type != TOMOYO_PROFILE) |
| 2476 | return; |
| 2477 | /* |
| 2478 | * If this is the first read, or reading previous namespace finished |
| 2479 | * and has more namespaces to read, update the namespace cursor. |
| 2480 | */ |
| 2481 | ns = head->r.ns; |
| 2482 | if (!ns || (head->r.eof && ns->next != &tomoyo_namespace_list)) { |
| 2483 | /* Clearing is OK because tomoyo_flush() returned true. */ |
| 2484 | memset(&head->r, 0, sizeof(head->r)); |
| 2485 | head->r.ns = ns ? ns->next : tomoyo_namespace_list.next; |
| 2486 | } |
| 2487 | } |
| 2488 | |
| 2489 | /** |
| 2490 | * tomoyo_has_more_namespace - Check for unread namespaces. |
| 2491 | * |
| 2492 | * @head: Pointer to "struct tomoyo_io_buffer". |
| 2493 | * |
| 2494 | * Returns true if we have more entries to print, false otherwise. |
| 2495 | */ |
| 2496 | static inline bool tomoyo_has_more_namespace(struct tomoyo_io_buffer *head) |
| 2497 | { |
| 2498 | return (head->type == TOMOYO_EXCEPTIONPOLICY || |
| 2499 | head->type == TOMOYO_PROFILE) && head->r.eof && |
| 2500 | head->r.ns->next != &tomoyo_namespace_list; |
| 2501 | } |
| 2502 | |
| 2503 | /** |
Kentaro Takeda | 9590837 | 2009-02-05 17:18:13 +0900 | [diff] [blame] | 2504 | * tomoyo_read_control - read() for /sys/kernel/security/tomoyo/ interface. |
| 2505 | * |
Tetsuo Handa | 0df7e8b | 2011-06-26 23:16:36 +0900 | [diff] [blame] | 2506 | * @head: Pointer to "struct tomoyo_io_buffer". |
Kentaro Takeda | 9590837 | 2009-02-05 17:18:13 +0900 | [diff] [blame] | 2507 | * @buffer: Poiner to buffer to write to. |
| 2508 | * @buffer_len: Size of @buffer. |
| 2509 | * |
| 2510 | * Returns bytes read on success, negative value otherwise. |
| 2511 | */ |
Tetsuo Handa | 2c47ab9 | 2011-06-26 23:21:19 +0900 | [diff] [blame] | 2512 | ssize_t tomoyo_read_control(struct tomoyo_io_buffer *head, char __user *buffer, |
| 2513 | const int buffer_len) |
Kentaro Takeda | 9590837 | 2009-02-05 17:18:13 +0900 | [diff] [blame] | 2514 | { |
Tetsuo Handa | f23571e | 2010-06-24 14:57:16 +0900 | [diff] [blame] | 2515 | int len; |
Tetsuo Handa | 2e503bb | 2011-06-26 23:20:55 +0900 | [diff] [blame] | 2516 | int idx; |
Kentaro Takeda | 9590837 | 2009-02-05 17:18:13 +0900 | [diff] [blame] | 2517 | |
| 2518 | if (!head->read) |
| 2519 | return -ENOSYS; |
| 2520 | if (mutex_lock_interruptible(&head->io_sem)) |
| 2521 | return -EINTR; |
Tetsuo Handa | f23571e | 2010-06-24 14:57:16 +0900 | [diff] [blame] | 2522 | head->read_user_buf = buffer; |
| 2523 | head->read_user_buf_avail = buffer_len; |
Tetsuo Handa | 2e503bb | 2011-06-26 23:20:55 +0900 | [diff] [blame] | 2524 | idx = tomoyo_read_lock(); |
Tetsuo Handa | f23571e | 2010-06-24 14:57:16 +0900 | [diff] [blame] | 2525 | if (tomoyo_flush(head)) |
| 2526 | /* Call the policy handler. */ |
Tetsuo Handa | bd03a3e | 2011-06-26 23:19:52 +0900 | [diff] [blame] | 2527 | do { |
| 2528 | tomoyo_set_namespace_cursor(head); |
| 2529 | head->read(head); |
| 2530 | } while (tomoyo_flush(head) && |
| 2531 | tomoyo_has_more_namespace(head)); |
Tetsuo Handa | 2e503bb | 2011-06-26 23:20:55 +0900 | [diff] [blame] | 2532 | tomoyo_read_unlock(idx); |
Tetsuo Handa | f23571e | 2010-06-24 14:57:16 +0900 | [diff] [blame] | 2533 | len = head->read_user_buf - buffer; |
Kentaro Takeda | 9590837 | 2009-02-05 17:18:13 +0900 | [diff] [blame] | 2534 | mutex_unlock(&head->io_sem); |
| 2535 | return len; |
| 2536 | } |
| 2537 | |
| 2538 | /** |
Tetsuo Handa | bd03a3e | 2011-06-26 23:19:52 +0900 | [diff] [blame] | 2539 | * tomoyo_parse_policy - Parse a policy line. |
| 2540 | * |
| 2541 | * @head: Poiter to "struct tomoyo_io_buffer". |
| 2542 | * @line: Line to parse. |
| 2543 | * |
| 2544 | * Returns 0 on success, negative value otherwise. |
| 2545 | * |
| 2546 | * Caller holds tomoyo_read_lock(). |
| 2547 | */ |
| 2548 | static int tomoyo_parse_policy(struct tomoyo_io_buffer *head, char *line) |
| 2549 | { |
| 2550 | /* Delete request? */ |
| 2551 | head->w.is_delete = !strncmp(line, "delete ", 7); |
| 2552 | if (head->w.is_delete) |
| 2553 | memmove(line, line + 7, strlen(line + 7) + 1); |
| 2554 | /* Selecting namespace to update. */ |
| 2555 | if (head->type == TOMOYO_EXCEPTIONPOLICY || |
| 2556 | head->type == TOMOYO_PROFILE) { |
| 2557 | if (*line == '<') { |
| 2558 | char *cp = strchr(line, ' '); |
| 2559 | if (cp) { |
| 2560 | *cp++ = '\0'; |
| 2561 | head->w.ns = tomoyo_assign_namespace(line); |
| 2562 | memmove(line, cp, strlen(cp) + 1); |
| 2563 | } else |
| 2564 | head->w.ns = NULL; |
| 2565 | } else |
| 2566 | head->w.ns = &tomoyo_kernel_namespace; |
| 2567 | /* Don't allow updating if namespace is invalid. */ |
| 2568 | if (!head->w.ns) |
| 2569 | return -ENOENT; |
| 2570 | } |
| 2571 | /* Do the update. */ |
| 2572 | return head->write(head); |
| 2573 | } |
| 2574 | |
| 2575 | /** |
Kentaro Takeda | 9590837 | 2009-02-05 17:18:13 +0900 | [diff] [blame] | 2576 | * tomoyo_write_control - write() for /sys/kernel/security/tomoyo/ interface. |
| 2577 | * |
Tetsuo Handa | 0df7e8b | 2011-06-26 23:16:36 +0900 | [diff] [blame] | 2578 | * @head: Pointer to "struct tomoyo_io_buffer". |
Kentaro Takeda | 9590837 | 2009-02-05 17:18:13 +0900 | [diff] [blame] | 2579 | * @buffer: Pointer to buffer to read from. |
| 2580 | * @buffer_len: Size of @buffer. |
| 2581 | * |
| 2582 | * Returns @buffer_len on success, negative value otherwise. |
| 2583 | */ |
Tetsuo Handa | 2c47ab9 | 2011-06-26 23:21:19 +0900 | [diff] [blame] | 2584 | ssize_t tomoyo_write_control(struct tomoyo_io_buffer *head, |
| 2585 | const char __user *buffer, const int buffer_len) |
Kentaro Takeda | 9590837 | 2009-02-05 17:18:13 +0900 | [diff] [blame] | 2586 | { |
Kentaro Takeda | 9590837 | 2009-02-05 17:18:13 +0900 | [diff] [blame] | 2587 | int error = buffer_len; |
Tetsuo Handa | bd03a3e | 2011-06-26 23:19:52 +0900 | [diff] [blame] | 2588 | size_t avail_len = buffer_len; |
Kentaro Takeda | 9590837 | 2009-02-05 17:18:13 +0900 | [diff] [blame] | 2589 | char *cp0 = head->write_buf; |
Tetsuo Handa | 2e503bb | 2011-06-26 23:20:55 +0900 | [diff] [blame] | 2590 | int idx; |
Kentaro Takeda | 9590837 | 2009-02-05 17:18:13 +0900 | [diff] [blame] | 2591 | if (!head->write) |
| 2592 | return -ENOSYS; |
| 2593 | if (!access_ok(VERIFY_READ, buffer, buffer_len)) |
| 2594 | return -EFAULT; |
Kentaro Takeda | 9590837 | 2009-02-05 17:18:13 +0900 | [diff] [blame] | 2595 | if (mutex_lock_interruptible(&head->io_sem)) |
| 2596 | return -EINTR; |
Tetsuo Handa | e0b057b | 2011-10-21 12:37:13 +0900 | [diff] [blame] | 2597 | head->read_user_buf_avail = 0; |
Tetsuo Handa | 2e503bb | 2011-06-26 23:20:55 +0900 | [diff] [blame] | 2598 | idx = tomoyo_read_lock(); |
Kentaro Takeda | 9590837 | 2009-02-05 17:18:13 +0900 | [diff] [blame] | 2599 | /* Read a line and dispatch it to the policy handler. */ |
| 2600 | while (avail_len > 0) { |
| 2601 | char c; |
Tetsuo Handa | 0df7e8b | 2011-06-26 23:16:36 +0900 | [diff] [blame] | 2602 | if (head->w.avail >= head->writebuf_size - 1) { |
Tetsuo Handa | bd03a3e | 2011-06-26 23:19:52 +0900 | [diff] [blame] | 2603 | const int len = head->writebuf_size * 2; |
| 2604 | char *cp = kzalloc(len, GFP_NOFS); |
| 2605 | if (!cp) { |
| 2606 | error = -ENOMEM; |
| 2607 | break; |
| 2608 | } |
| 2609 | memmove(cp, cp0, head->w.avail); |
| 2610 | kfree(cp0); |
| 2611 | head->write_buf = cp; |
| 2612 | cp0 = cp; |
| 2613 | head->writebuf_size = len; |
| 2614 | } |
| 2615 | if (get_user(c, buffer)) { |
Kentaro Takeda | 9590837 | 2009-02-05 17:18:13 +0900 | [diff] [blame] | 2616 | error = -EFAULT; |
| 2617 | break; |
| 2618 | } |
| 2619 | buffer++; |
| 2620 | avail_len--; |
Tetsuo Handa | 0df7e8b | 2011-06-26 23:16:36 +0900 | [diff] [blame] | 2621 | cp0[head->w.avail++] = c; |
Kentaro Takeda | 9590837 | 2009-02-05 17:18:13 +0900 | [diff] [blame] | 2622 | if (c != '\n') |
| 2623 | continue; |
Tetsuo Handa | 0df7e8b | 2011-06-26 23:16:36 +0900 | [diff] [blame] | 2624 | cp0[head->w.avail - 1] = '\0'; |
| 2625 | head->w.avail = 0; |
Kentaro Takeda | 9590837 | 2009-02-05 17:18:13 +0900 | [diff] [blame] | 2626 | tomoyo_normalize_line(cp0); |
Tetsuo Handa | bd03a3e | 2011-06-26 23:19:52 +0900 | [diff] [blame] | 2627 | if (!strcmp(cp0, "reset")) { |
| 2628 | head->w.ns = &tomoyo_kernel_namespace; |
| 2629 | head->w.domain = NULL; |
| 2630 | memset(&head->r, 0, sizeof(head->r)); |
| 2631 | continue; |
| 2632 | } |
| 2633 | /* Don't allow updating policies by non manager programs. */ |
| 2634 | switch (head->type) { |
| 2635 | case TOMOYO_PROCESS_STATUS: |
| 2636 | /* This does not write anything. */ |
| 2637 | break; |
| 2638 | case TOMOYO_DOMAINPOLICY: |
| 2639 | if (tomoyo_select_domain(head, cp0)) |
| 2640 | continue; |
| 2641 | /* fall through */ |
| 2642 | case TOMOYO_EXCEPTIONPOLICY: |
| 2643 | if (!strcmp(cp0, "select transition_only")) { |
| 2644 | head->r.print_transition_related_only = true; |
| 2645 | continue; |
| 2646 | } |
| 2647 | /* fall through */ |
| 2648 | default: |
| 2649 | if (!tomoyo_manager()) { |
| 2650 | error = -EPERM; |
| 2651 | goto out; |
| 2652 | } |
| 2653 | } |
| 2654 | switch (tomoyo_parse_policy(head, cp0)) { |
| 2655 | case -EPERM: |
| 2656 | error = -EPERM; |
| 2657 | goto out; |
Tetsuo Handa | b22b8b9 | 2011-06-26 23:21:50 +0900 | [diff] [blame] | 2658 | case 0: |
| 2659 | switch (head->type) { |
| 2660 | case TOMOYO_DOMAINPOLICY: |
| 2661 | case TOMOYO_EXCEPTIONPOLICY: |
Tetsuo Handa | b22b8b9 | 2011-06-26 23:21:50 +0900 | [diff] [blame] | 2662 | case TOMOYO_STAT: |
| 2663 | case TOMOYO_PROFILE: |
| 2664 | case TOMOYO_MANAGER: |
| 2665 | tomoyo_update_stat(TOMOYO_STAT_POLICY_UPDATES); |
| 2666 | break; |
| 2667 | default: |
| 2668 | break; |
| 2669 | } |
| 2670 | break; |
Tetsuo Handa | bd03a3e | 2011-06-26 23:19:52 +0900 | [diff] [blame] | 2671 | } |
Kentaro Takeda | 9590837 | 2009-02-05 17:18:13 +0900 | [diff] [blame] | 2672 | } |
Tetsuo Handa | bd03a3e | 2011-06-26 23:19:52 +0900 | [diff] [blame] | 2673 | out: |
Tetsuo Handa | 2e503bb | 2011-06-26 23:20:55 +0900 | [diff] [blame] | 2674 | tomoyo_read_unlock(idx); |
Kentaro Takeda | 9590837 | 2009-02-05 17:18:13 +0900 | [diff] [blame] | 2675 | mutex_unlock(&head->io_sem); |
| 2676 | return error; |
| 2677 | } |
| 2678 | |
| 2679 | /** |
| 2680 | * tomoyo_close_control - close() for /sys/kernel/security/tomoyo/ interface. |
| 2681 | * |
Tetsuo Handa | 0df7e8b | 2011-06-26 23:16:36 +0900 | [diff] [blame] | 2682 | * @head: Pointer to "struct tomoyo_io_buffer". |
Kentaro Takeda | 9590837 | 2009-02-05 17:18:13 +0900 | [diff] [blame] | 2683 | */ |
Al Viro | e53cfda | 2013-04-14 16:59:00 -0400 | [diff] [blame] | 2684 | void tomoyo_close_control(struct tomoyo_io_buffer *head) |
Kentaro Takeda | 9590837 | 2009-02-05 17:18:13 +0900 | [diff] [blame] | 2685 | { |
Tetsuo Handa | 17fcfbd | 2010-05-17 10:11:36 +0900 | [diff] [blame] | 2686 | /* |
| 2687 | * If the file is /sys/kernel/security/tomoyo/query , decrement the |
| 2688 | * observer counter. |
| 2689 | */ |
Tetsuo Handa | 2e503bb | 2011-06-26 23:20:55 +0900 | [diff] [blame] | 2690 | if (head->type == TOMOYO_QUERY && |
| 2691 | atomic_dec_and_test(&tomoyo_query_observers)) |
| 2692 | wake_up_all(&tomoyo_answer_wait); |
| 2693 | tomoyo_notify_gc(head, false); |
Kentaro Takeda | 9590837 | 2009-02-05 17:18:13 +0900 | [diff] [blame] | 2694 | } |
| 2695 | |
| 2696 | /** |
Tetsuo Handa | c3ef150 | 2010-05-17 10:12:46 +0900 | [diff] [blame] | 2697 | * tomoyo_check_profile - Check all profiles currently assigned to domains are defined. |
Kentaro Takeda | 9590837 | 2009-02-05 17:18:13 +0900 | [diff] [blame] | 2698 | */ |
Tetsuo Handa | c3ef150 | 2010-05-17 10:12:46 +0900 | [diff] [blame] | 2699 | void tomoyo_check_profile(void) |
Kentaro Takeda | 9590837 | 2009-02-05 17:18:13 +0900 | [diff] [blame] | 2700 | { |
Tetsuo Handa | c3ef150 | 2010-05-17 10:12:46 +0900 | [diff] [blame] | 2701 | struct tomoyo_domain_info *domain; |
| 2702 | const int idx = tomoyo_read_lock(); |
| 2703 | tomoyo_policy_loaded = true; |
Tetsuo Handa | 843d183 | 2011-09-14 17:03:19 +0900 | [diff] [blame] | 2704 | printk(KERN_INFO "TOMOYO: 2.5.0\n"); |
Tetsuo Handa | c3ef150 | 2010-05-17 10:12:46 +0900 | [diff] [blame] | 2705 | list_for_each_entry_rcu(domain, &tomoyo_domain_list, list) { |
| 2706 | const u8 profile = domain->profile; |
Tetsuo Handa | bd03a3e | 2011-06-26 23:19:52 +0900 | [diff] [blame] | 2707 | const struct tomoyo_policy_namespace *ns = domain->ns; |
Tetsuo Handa | 843d183 | 2011-09-14 17:03:19 +0900 | [diff] [blame] | 2708 | if (ns->profile_version != 20110903) |
Tetsuo Handa | bd03a3e | 2011-06-26 23:19:52 +0900 | [diff] [blame] | 2709 | printk(KERN_ERR |
| 2710 | "Profile version %u is not supported.\n", |
| 2711 | ns->profile_version); |
| 2712 | else if (!ns->profile_ptr[profile]) |
| 2713 | printk(KERN_ERR |
| 2714 | "Profile %u (used by '%s') is not defined.\n", |
| 2715 | profile, domain->domainname->name); |
| 2716 | else |
Tetsuo Handa | c3ef150 | 2010-05-17 10:12:46 +0900 | [diff] [blame] | 2717 | continue; |
Tetsuo Handa | bd03a3e | 2011-06-26 23:19:52 +0900 | [diff] [blame] | 2718 | printk(KERN_ERR |
Tetsuo Handa | 843d183 | 2011-09-14 17:03:19 +0900 | [diff] [blame] | 2719 | "Userland tools for TOMOYO 2.5 must be installed and " |
Tetsuo Handa | bd03a3e | 2011-06-26 23:19:52 +0900 | [diff] [blame] | 2720 | "policy must be initialized.\n"); |
Tetsuo Handa | 843d183 | 2011-09-14 17:03:19 +0900 | [diff] [blame] | 2721 | printk(KERN_ERR "Please see http://tomoyo.sourceforge.jp/2.5/ " |
Tetsuo Handa | 9f1c1d4 | 2010-10-08 14:43:22 +0900 | [diff] [blame] | 2722 | "for more information.\n"); |
Tetsuo Handa | bd03a3e | 2011-06-26 23:19:52 +0900 | [diff] [blame] | 2723 | panic("STOP!"); |
Tetsuo Handa | c3ef150 | 2010-05-17 10:12:46 +0900 | [diff] [blame] | 2724 | } |
| 2725 | tomoyo_read_unlock(idx); |
Tetsuo Handa | c3ef150 | 2010-05-17 10:12:46 +0900 | [diff] [blame] | 2726 | printk(KERN_INFO "Mandatory Access Control activated.\n"); |
Kentaro Takeda | 9590837 | 2009-02-05 17:18:13 +0900 | [diff] [blame] | 2727 | } |
Tetsuo Handa | efe836a | 2011-06-26 23:22:18 +0900 | [diff] [blame] | 2728 | |
| 2729 | /** |
| 2730 | * tomoyo_load_builtin_policy - Load built-in policy. |
| 2731 | * |
| 2732 | * Returns nothing. |
| 2733 | */ |
| 2734 | void __init tomoyo_load_builtin_policy(void) |
| 2735 | { |
| 2736 | /* |
| 2737 | * This include file is manually created and contains built-in policy |
| 2738 | * named "tomoyo_builtin_profile", "tomoyo_builtin_exception_policy", |
| 2739 | * "tomoyo_builtin_domain_policy", "tomoyo_builtin_manager", |
| 2740 | * "tomoyo_builtin_stat" in the form of "static char [] __initdata". |
| 2741 | */ |
| 2742 | #include "builtin-policy.h" |
| 2743 | u8 i; |
| 2744 | const int idx = tomoyo_read_lock(); |
| 2745 | for (i = 0; i < 5; i++) { |
| 2746 | struct tomoyo_io_buffer head = { }; |
| 2747 | char *start = ""; |
| 2748 | switch (i) { |
| 2749 | case 0: |
| 2750 | start = tomoyo_builtin_profile; |
| 2751 | head.type = TOMOYO_PROFILE; |
| 2752 | head.write = tomoyo_write_profile; |
| 2753 | break; |
| 2754 | case 1: |
| 2755 | start = tomoyo_builtin_exception_policy; |
| 2756 | head.type = TOMOYO_EXCEPTIONPOLICY; |
| 2757 | head.write = tomoyo_write_exception; |
| 2758 | break; |
| 2759 | case 2: |
| 2760 | start = tomoyo_builtin_domain_policy; |
| 2761 | head.type = TOMOYO_DOMAINPOLICY; |
| 2762 | head.write = tomoyo_write_domain; |
| 2763 | break; |
| 2764 | case 3: |
| 2765 | start = tomoyo_builtin_manager; |
| 2766 | head.type = TOMOYO_MANAGER; |
| 2767 | head.write = tomoyo_write_manager; |
| 2768 | break; |
| 2769 | case 4: |
| 2770 | start = tomoyo_builtin_stat; |
| 2771 | head.type = TOMOYO_STAT; |
| 2772 | head.write = tomoyo_write_stat; |
| 2773 | break; |
| 2774 | } |
| 2775 | while (1) { |
| 2776 | char *end = strchr(start, '\n'); |
| 2777 | if (!end) |
| 2778 | break; |
| 2779 | *end = '\0'; |
| 2780 | tomoyo_normalize_line(start); |
| 2781 | head.write_buf = start; |
| 2782 | tomoyo_parse_policy(&head, start); |
| 2783 | start = end + 1; |
| 2784 | } |
| 2785 | } |
| 2786 | tomoyo_read_unlock(idx); |
Tetsuo Handa | 0e4ae0e | 2011-06-26 23:22:59 +0900 | [diff] [blame] | 2787 | #ifdef CONFIG_SECURITY_TOMOYO_OMIT_USERSPACE_LOADER |
| 2788 | tomoyo_check_profile(); |
| 2789 | #endif |
Tetsuo Handa | efe836a | 2011-06-26 23:22:18 +0900 | [diff] [blame] | 2790 | } |