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security/tomoyo/common.c
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/* * security/tomoyo/common.c * |
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* Copyright (C) 2005-2011 NTT DATA CORPORATION |
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*/ #include <linux/uaccess.h> |
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#include <linux/slab.h> |
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#include <linux/security.h> |
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#include "common.h" |
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/* String table for operation mode. */ const char * const tomoyo_mode[TOMOYO_CONFIG_MAX_MODE] = { [TOMOYO_CONFIG_DISABLED] = "disabled", [TOMOYO_CONFIG_LEARNING] = "learning", [TOMOYO_CONFIG_PERMISSIVE] = "permissive", [TOMOYO_CONFIG_ENFORCING] = "enforcing" |
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}; |
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/* String table for /sys/kernel/security/tomoyo/profile */ |
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const char * const tomoyo_mac_keywords[TOMOYO_MAX_MAC_INDEX |
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+ TOMOYO_MAX_MAC_CATEGORY_INDEX] = { |
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/* CONFIG::file group */ |
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[TOMOYO_MAC_FILE_EXECUTE] = "execute", [TOMOYO_MAC_FILE_OPEN] = "open", [TOMOYO_MAC_FILE_CREATE] = "create", [TOMOYO_MAC_FILE_UNLINK] = "unlink", [TOMOYO_MAC_FILE_GETATTR] = "getattr", [TOMOYO_MAC_FILE_MKDIR] = "mkdir", [TOMOYO_MAC_FILE_RMDIR] = "rmdir", [TOMOYO_MAC_FILE_MKFIFO] = "mkfifo", [TOMOYO_MAC_FILE_MKSOCK] = "mksock", [TOMOYO_MAC_FILE_TRUNCATE] = "truncate", [TOMOYO_MAC_FILE_SYMLINK] = "symlink", [TOMOYO_MAC_FILE_MKBLOCK] = "mkblock", [TOMOYO_MAC_FILE_MKCHAR] = "mkchar", [TOMOYO_MAC_FILE_LINK] = "link", [TOMOYO_MAC_FILE_RENAME] = "rename", [TOMOYO_MAC_FILE_CHMOD] = "chmod", [TOMOYO_MAC_FILE_CHOWN] = "chown", [TOMOYO_MAC_FILE_CHGRP] = "chgrp", [TOMOYO_MAC_FILE_IOCTL] = "ioctl", [TOMOYO_MAC_FILE_CHROOT] = "chroot", [TOMOYO_MAC_FILE_MOUNT] = "mount", [TOMOYO_MAC_FILE_UMOUNT] = "unmount", [TOMOYO_MAC_FILE_PIVOT_ROOT] = "pivot_root", |
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/* CONFIG::network group */ [TOMOYO_MAC_NETWORK_INET_STREAM_BIND] = "inet_stream_bind", [TOMOYO_MAC_NETWORK_INET_STREAM_LISTEN] = "inet_stream_listen", [TOMOYO_MAC_NETWORK_INET_STREAM_CONNECT] = "inet_stream_connect", [TOMOYO_MAC_NETWORK_INET_DGRAM_BIND] = "inet_dgram_bind", [TOMOYO_MAC_NETWORK_INET_DGRAM_SEND] = "inet_dgram_send", [TOMOYO_MAC_NETWORK_INET_RAW_BIND] = "inet_raw_bind", [TOMOYO_MAC_NETWORK_INET_RAW_SEND] = "inet_raw_send", [TOMOYO_MAC_NETWORK_UNIX_STREAM_BIND] = "unix_stream_bind", [TOMOYO_MAC_NETWORK_UNIX_STREAM_LISTEN] = "unix_stream_listen", [TOMOYO_MAC_NETWORK_UNIX_STREAM_CONNECT] = "unix_stream_connect", [TOMOYO_MAC_NETWORK_UNIX_DGRAM_BIND] = "unix_dgram_bind", [TOMOYO_MAC_NETWORK_UNIX_DGRAM_SEND] = "unix_dgram_send", [TOMOYO_MAC_NETWORK_UNIX_SEQPACKET_BIND] = "unix_seqpacket_bind", [TOMOYO_MAC_NETWORK_UNIX_SEQPACKET_LISTEN] = "unix_seqpacket_listen", [TOMOYO_MAC_NETWORK_UNIX_SEQPACKET_CONNECT] = "unix_seqpacket_connect", |
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/* CONFIG::misc group */ [TOMOYO_MAC_ENVIRON] = "env", /* CONFIG group */ |
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[TOMOYO_MAX_MAC_INDEX + TOMOYO_MAC_CATEGORY_FILE] = "file", |
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[TOMOYO_MAX_MAC_INDEX + TOMOYO_MAC_CATEGORY_NETWORK] = "network", |
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[TOMOYO_MAX_MAC_INDEX + TOMOYO_MAC_CATEGORY_MISC] = "misc", |
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}; |
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/* String table for conditions. */ const char * const tomoyo_condition_keyword[TOMOYO_MAX_CONDITION_KEYWORD] = { [TOMOYO_TASK_UID] = "task.uid", [TOMOYO_TASK_EUID] = "task.euid", [TOMOYO_TASK_SUID] = "task.suid", [TOMOYO_TASK_FSUID] = "task.fsuid", [TOMOYO_TASK_GID] = "task.gid", [TOMOYO_TASK_EGID] = "task.egid", [TOMOYO_TASK_SGID] = "task.sgid", [TOMOYO_TASK_FSGID] = "task.fsgid", [TOMOYO_TASK_PID] = "task.pid", [TOMOYO_TASK_PPID] = "task.ppid", |
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[TOMOYO_EXEC_ARGC] = "exec.argc", [TOMOYO_EXEC_ENVC] = "exec.envc", |
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[TOMOYO_TYPE_IS_SOCKET] = "socket", [TOMOYO_TYPE_IS_SYMLINK] = "symlink", [TOMOYO_TYPE_IS_FILE] = "file", [TOMOYO_TYPE_IS_BLOCK_DEV] = "block", [TOMOYO_TYPE_IS_DIRECTORY] = "directory", [TOMOYO_TYPE_IS_CHAR_DEV] = "char", [TOMOYO_TYPE_IS_FIFO] = "fifo", [TOMOYO_MODE_SETUID] = "setuid", [TOMOYO_MODE_SETGID] = "setgid", [TOMOYO_MODE_STICKY] = "sticky", [TOMOYO_MODE_OWNER_READ] = "owner_read", [TOMOYO_MODE_OWNER_WRITE] = "owner_write", [TOMOYO_MODE_OWNER_EXECUTE] = "owner_execute", [TOMOYO_MODE_GROUP_READ] = "group_read", [TOMOYO_MODE_GROUP_WRITE] = "group_write", [TOMOYO_MODE_GROUP_EXECUTE] = "group_execute", [TOMOYO_MODE_OTHERS_READ] = "others_read", [TOMOYO_MODE_OTHERS_WRITE] = "others_write", [TOMOYO_MODE_OTHERS_EXECUTE] = "others_execute", |
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[TOMOYO_EXEC_REALPATH] = "exec.realpath", [TOMOYO_SYMLINK_TARGET] = "symlink.target", |
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[TOMOYO_PATH1_UID] = "path1.uid", [TOMOYO_PATH1_GID] = "path1.gid", [TOMOYO_PATH1_INO] = "path1.ino", [TOMOYO_PATH1_MAJOR] = "path1.major", [TOMOYO_PATH1_MINOR] = "path1.minor", [TOMOYO_PATH1_PERM] = "path1.perm", [TOMOYO_PATH1_TYPE] = "path1.type", [TOMOYO_PATH1_DEV_MAJOR] = "path1.dev_major", [TOMOYO_PATH1_DEV_MINOR] = "path1.dev_minor", [TOMOYO_PATH2_UID] = "path2.uid", [TOMOYO_PATH2_GID] = "path2.gid", [TOMOYO_PATH2_INO] = "path2.ino", [TOMOYO_PATH2_MAJOR] = "path2.major", [TOMOYO_PATH2_MINOR] = "path2.minor", [TOMOYO_PATH2_PERM] = "path2.perm", [TOMOYO_PATH2_TYPE] = "path2.type", [TOMOYO_PATH2_DEV_MAJOR] = "path2.dev_major", [TOMOYO_PATH2_DEV_MINOR] = "path2.dev_minor", [TOMOYO_PATH1_PARENT_UID] = "path1.parent.uid", [TOMOYO_PATH1_PARENT_GID] = "path1.parent.gid", [TOMOYO_PATH1_PARENT_INO] = "path1.parent.ino", [TOMOYO_PATH1_PARENT_PERM] = "path1.parent.perm", [TOMOYO_PATH2_PARENT_UID] = "path2.parent.uid", [TOMOYO_PATH2_PARENT_GID] = "path2.parent.gid", [TOMOYO_PATH2_PARENT_INO] = "path2.parent.ino", [TOMOYO_PATH2_PARENT_PERM] = "path2.parent.perm", |
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}; |
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/* String table for PREFERENCE keyword. */ static const char * const tomoyo_pref_keywords[TOMOYO_MAX_PREF] = { |
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[TOMOYO_PREF_MAX_AUDIT_LOG] = "max_audit_log", |
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[TOMOYO_PREF_MAX_LEARNING_ENTRY] = "max_learning_entry", }; |
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/* String table for path operation. */ const char * const tomoyo_path_keyword[TOMOYO_MAX_PATH_OPERATION] = { [TOMOYO_TYPE_EXECUTE] = "execute", [TOMOYO_TYPE_READ] = "read", [TOMOYO_TYPE_WRITE] = "write", [TOMOYO_TYPE_APPEND] = "append", [TOMOYO_TYPE_UNLINK] = "unlink", [TOMOYO_TYPE_GETATTR] = "getattr", [TOMOYO_TYPE_RMDIR] = "rmdir", [TOMOYO_TYPE_TRUNCATE] = "truncate", [TOMOYO_TYPE_SYMLINK] = "symlink", [TOMOYO_TYPE_CHROOT] = "chroot", [TOMOYO_TYPE_UMOUNT] = "unmount", }; |
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/* String table for socket's operation. */ const char * const tomoyo_socket_keyword[TOMOYO_MAX_NETWORK_OPERATION] = { [TOMOYO_NETWORK_BIND] = "bind", [TOMOYO_NETWORK_LISTEN] = "listen", [TOMOYO_NETWORK_CONNECT] = "connect", [TOMOYO_NETWORK_SEND] = "send", }; |
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/* String table for categories. */ static const char * const tomoyo_category_keywords [TOMOYO_MAX_MAC_CATEGORY_INDEX] = { |
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[TOMOYO_MAC_CATEGORY_FILE] = "file", [TOMOYO_MAC_CATEGORY_NETWORK] = "network", [TOMOYO_MAC_CATEGORY_MISC] = "misc", |
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}; |
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/* Permit policy management by non-root user? */ static bool tomoyo_manage_by_non_root; /* Utility functions. */ |
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/** |
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* tomoyo_yesno - Return "yes" or "no". * * @value: Bool value. */ |
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const char *tomoyo_yesno(const unsigned int value) |
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{ return value ? "yes" : "no"; } |
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/** * tomoyo_addprintf - strncat()-like-snprintf(). * * @buffer: Buffer to write to. Must be '\0'-terminated. * @len: Size of @buffer. * @fmt: The printf()'s format string, followed by parameters. * * Returns nothing. */ |
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static void tomoyo_addprintf(char *buffer, int len, const char *fmt, ...) { va_list args; const int pos = strlen(buffer); va_start(args, fmt); vsnprintf(buffer + pos, len - pos - 1, fmt, args); va_end(args); } |
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/** |
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* tomoyo_flush - Flush queued string to userspace's buffer. |
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* |
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* @head: Pointer to "struct tomoyo_io_buffer". |
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* |
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* Returns true if all data was flushed, false otherwise. |
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*/ |
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static bool tomoyo_flush(struct tomoyo_io_buffer *head) |
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{ |
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while (head->r.w_pos) { const char *w = head->r.w[0]; |
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size_t len = strlen(w); |
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if (len) { if (len > head->read_user_buf_avail) len = head->read_user_buf_avail; if (!len) return false; if (copy_to_user(head->read_user_buf, w, len)) return false; head->read_user_buf_avail -= len; head->read_user_buf += len; w += len; } |
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head->r.w[0] = w; if (*w) |
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return false; |
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/* Add '\0' for audit logs and query. */ |
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if (head->poll) { if (!head->read_user_buf_avail || copy_to_user(head->read_user_buf, "", 1)) return false; head->read_user_buf_avail--; head->read_user_buf++; } head->r.w_pos--; for (len = 0; len < head->r.w_pos; len++) head->r.w[len] = head->r.w[len + 1]; } head->r.avail = 0; return true; |
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} /** |
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* tomoyo_set_string - Queue string to "struct tomoyo_io_buffer" structure. |
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* |
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* @head: Pointer to "struct tomoyo_io_buffer". * @string: String to print. |
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* |
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* Note that @string has to be kept valid until @head is kfree()d. * This means that char[] allocated on stack memory cannot be passed to * this function. Use tomoyo_io_printf() for char[] allocated on stack memory. |
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*/ |
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static void tomoyo_set_string(struct tomoyo_io_buffer *head, const char *string) |
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{ |
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if (head->r.w_pos < TOMOYO_MAX_IO_READ_QUEUE) { head->r.w[head->r.w_pos++] = string; tomoyo_flush(head); } else WARN_ON(1); |
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} |
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static void tomoyo_io_printf(struct tomoyo_io_buffer *head, const char *fmt, ...) __printf(2, 3); |
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/** |
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* tomoyo_io_printf - printf() to "struct tomoyo_io_buffer" structure. |
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* * @head: Pointer to "struct tomoyo_io_buffer". * @fmt: The printf()'s format string, followed by parameters. |
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*/ |
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static void tomoyo_io_printf(struct tomoyo_io_buffer *head, const char *fmt, ...) |
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{ va_list args; |
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size_t len; size_t pos = head->r.avail; |
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int size = head->readbuf_size - pos; |
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if (size <= 0) |
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return; |
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va_start(args, fmt); |
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len = vsnprintf(head->read_buf + pos, size, fmt, args) + 1; |
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va_end(args); |
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if (pos + len >= head->readbuf_size) { WARN_ON(1); return; } head->r.avail += len; tomoyo_set_string(head, head->read_buf + pos); } |
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/** * tomoyo_set_space - Put a space to "struct tomoyo_io_buffer" structure. * * @head: Pointer to "struct tomoyo_io_buffer". * * Returns nothing. */ |
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static void tomoyo_set_space(struct tomoyo_io_buffer *head) { tomoyo_set_string(head, " "); } |
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/** * tomoyo_set_lf - Put a line feed to "struct tomoyo_io_buffer" structure. * * @head: Pointer to "struct tomoyo_io_buffer". * * Returns nothing. */ |
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static bool tomoyo_set_lf(struct tomoyo_io_buffer *head) { tomoyo_set_string(head, " "); return !head->r.w_pos; } /** |
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* tomoyo_set_slash - Put a shash to "struct tomoyo_io_buffer" structure. * * @head: Pointer to "struct tomoyo_io_buffer". * * Returns nothing. */ static void tomoyo_set_slash(struct tomoyo_io_buffer *head) { tomoyo_set_string(head, "/"); } |
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/* List of namespaces. */ LIST_HEAD(tomoyo_namespace_list); /* True if namespace other than tomoyo_kernel_namespace is defined. */ static bool tomoyo_namespace_enabled; /** * tomoyo_init_policy_namespace - Initialize namespace. * * @ns: Pointer to "struct tomoyo_policy_namespace". * * Returns nothing. */ void tomoyo_init_policy_namespace(struct tomoyo_policy_namespace *ns) { unsigned int idx; for (idx = 0; idx < TOMOYO_MAX_ACL_GROUPS; idx++) INIT_LIST_HEAD(&ns->acl_group[idx]); for (idx = 0; idx < TOMOYO_MAX_GROUP; idx++) INIT_LIST_HEAD(&ns->group_list[idx]); for (idx = 0; idx < TOMOYO_MAX_POLICY; idx++) INIT_LIST_HEAD(&ns->policy_list[idx]); |
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ns->profile_version = 20110903; |
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tomoyo_namespace_enabled = !list_empty(&tomoyo_namespace_list); list_add_tail_rcu(&ns->namespace_list, &tomoyo_namespace_list); } /** * tomoyo_print_namespace - Print namespace header. * * @head: Pointer to "struct tomoyo_io_buffer". * * Returns nothing. */ static void tomoyo_print_namespace(struct tomoyo_io_buffer *head) { if (!tomoyo_namespace_enabled) return; tomoyo_set_string(head, container_of(head->r.ns, struct tomoyo_policy_namespace, namespace_list)->name); tomoyo_set_space(head); } |
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/** |
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* tomoyo_print_name_union - Print a tomoyo_name_union. * * @head: Pointer to "struct tomoyo_io_buffer". * @ptr: Pointer to "struct tomoyo_name_union". */ static void tomoyo_print_name_union(struct tomoyo_io_buffer *head, const struct tomoyo_name_union *ptr) { tomoyo_set_space(head); |
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if (ptr->group) { |
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tomoyo_set_string(head, "@"); tomoyo_set_string(head, ptr->group->group_name->name); } else { tomoyo_set_string(head, ptr->filename->name); } } /** |
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* tomoyo_print_name_union_quoted - Print a tomoyo_name_union with a quote. * * @head: Pointer to "struct tomoyo_io_buffer". * @ptr: Pointer to "struct tomoyo_name_union". * * Returns nothing. */ static void tomoyo_print_name_union_quoted(struct tomoyo_io_buffer *head, const struct tomoyo_name_union *ptr) { if (ptr->group) { tomoyo_set_string(head, "@"); tomoyo_set_string(head, ptr->group->group_name->name); } else { tomoyo_set_string(head, "\""); tomoyo_set_string(head, ptr->filename->name); tomoyo_set_string(head, "\""); } } /** |
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* tomoyo_print_number_union_nospace - Print a tomoyo_number_union without a space. |
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* |
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* @head: Pointer to "struct tomoyo_io_buffer". * @ptr: Pointer to "struct tomoyo_number_union". * * Returns nothing. |
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*/ |
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static void tomoyo_print_number_union_nospace (struct tomoyo_io_buffer *head, const struct tomoyo_number_union *ptr) |
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{ |
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if (ptr->group) { |
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tomoyo_set_string(head, "@"); tomoyo_set_string(head, ptr->group->group_name->name); } else { int i; unsigned long min = ptr->values[0]; const unsigned long max = ptr->values[1]; |
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u8 min_type = ptr->value_type[0]; const u8 max_type = ptr->value_type[1]; |
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char buffer[128]; buffer[0] = '\0'; for (i = 0; i < 2; i++) { switch (min_type) { case TOMOYO_VALUE_TYPE_HEXADECIMAL: tomoyo_addprintf(buffer, sizeof(buffer), "0x%lX", min); break; case TOMOYO_VALUE_TYPE_OCTAL: tomoyo_addprintf(buffer, sizeof(buffer), "0%lo", min); break; default: |
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tomoyo_addprintf(buffer, sizeof(buffer), "%lu", min); |
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break; } if (min == max && min_type == max_type) break; tomoyo_addprintf(buffer, sizeof(buffer), "-"); min_type = max_type; min = max; } tomoyo_io_printf(head, "%s", buffer); } |
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} /** |
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* tomoyo_print_number_union - Print a tomoyo_number_union. * * @head: Pointer to "struct tomoyo_io_buffer". * @ptr: Pointer to "struct tomoyo_number_union". * * Returns nothing. */ static void tomoyo_print_number_union(struct tomoyo_io_buffer *head, const struct tomoyo_number_union *ptr) { tomoyo_set_space(head); tomoyo_print_number_union_nospace(head, ptr); } /** |
e2bf69077 TOMOYO: Rename sy... |
463 |
* tomoyo_assign_profile - Create a new profile. |
9590837b8 Common functions ... |
464 |
* |
bd03a3e4c TOMOYO: Add polic... |
465 |
* @ns: Pointer to "struct tomoyo_policy_namespace". |
9590837b8 Common functions ... |
466 467 468 469 |
* @profile: Profile number to create. * * Returns pointer to "struct tomoyo_profile" on success, NULL otherwise. */ |
bd03a3e4c TOMOYO: Add polic... |
470 471 |
static struct tomoyo_profile *tomoyo_assign_profile (struct tomoyo_policy_namespace *ns, const unsigned int profile) |
9590837b8 Common functions ... |
472 |
{ |
57c2590fb TOMOYO: Update pr... |
473 474 |
struct tomoyo_profile *ptr; struct tomoyo_profile *entry; |
9590837b8 Common functions ... |
475 476 |
if (profile >= TOMOYO_MAX_PROFILES) return NULL; |
bd03a3e4c TOMOYO: Add polic... |
477 |
ptr = ns->profile_ptr[profile]; |
9590837b8 Common functions ... |
478 |
if (ptr) |
57c2590fb TOMOYO: Update pr... |
479 480 481 482 |
return ptr; entry = kzalloc(sizeof(*entry), GFP_NOFS); if (mutex_lock_interruptible(&tomoyo_policy_lock)) goto out; |
bd03a3e4c TOMOYO: Add polic... |
483 |
ptr = ns->profile_ptr[profile]; |
57c2590fb TOMOYO: Update pr... |
484 485 |
if (!ptr && tomoyo_memory_ok(entry)) { ptr = entry; |
eadd99cc8 TOMOYO: Add audit... |
486 487 488 |
ptr->default_config = TOMOYO_CONFIG_DISABLED | TOMOYO_CONFIG_WANT_GRANT_LOG | TOMOYO_CONFIG_WANT_REJECT_LOG; |
57c2590fb TOMOYO: Update pr... |
489 490 |
memset(ptr->config, TOMOYO_CONFIG_USE_DEFAULT, sizeof(ptr->config)); |
6afcb3b73 TOMOYO: Fix unuse... |
491 492 493 494 |
ptr->pref[TOMOYO_PREF_MAX_AUDIT_LOG] = CONFIG_SECURITY_TOMOYO_MAX_AUDIT_LOG; ptr->pref[TOMOYO_PREF_MAX_LEARNING_ENTRY] = CONFIG_SECURITY_TOMOYO_MAX_ACCEPT_ENTRY; |
57c2590fb TOMOYO: Update pr... |
495 |
mb(); /* Avoid out-of-order execution. */ |
bd03a3e4c TOMOYO: Add polic... |
496 |
ns->profile_ptr[profile] = ptr; |
57c2590fb TOMOYO: Update pr... |
497 |
entry = NULL; |
cd7bec6ad TOMOYO: Remove me... |
498 |
} |
292823814 TOMOYO: Use mutex... |
499 |
mutex_unlock(&tomoyo_policy_lock); |
57c2590fb TOMOYO: Update pr... |
500 501 |
out: kfree(entry); |
9590837b8 Common functions ... |
502 503 504 505 |
return ptr; } /** |
57c2590fb TOMOYO: Update pr... |
506 507 |
* tomoyo_profile - Find a profile. * |
bd03a3e4c TOMOYO: Add polic... |
508 |
* @ns: Pointer to "struct tomoyo_policy_namespace". |
57c2590fb TOMOYO: Update pr... |
509 510 511 512 |
* @profile: Profile number to find. * * Returns pointer to "struct tomoyo_profile". */ |
bd03a3e4c TOMOYO: Add polic... |
513 514 |
struct tomoyo_profile *tomoyo_profile(const struct tomoyo_policy_namespace *ns, const u8 profile) |
57c2590fb TOMOYO: Update pr... |
515 |
{ |
d5ca1725a TOMOYO: Simplify ... |
516 |
static struct tomoyo_profile tomoyo_null_profile; |
bd03a3e4c TOMOYO: Add polic... |
517 |
struct tomoyo_profile *ptr = ns->profile_ptr[profile]; |
d5ca1725a TOMOYO: Simplify ... |
518 519 |
if (!ptr) ptr = &tomoyo_null_profile; |
57c2590fb TOMOYO: Update pr... |
520 521 |
return ptr; } |
d5ca1725a TOMOYO: Simplify ... |
522 523 524 525 526 527 528 529 |
/** * tomoyo_find_yesno - Find values for specified keyword. * * @string: String to check. * @find: Name of keyword. * * Returns 1 if "@find=yes" was found, 0 if "@find=no" was found, -1 otherwise. */ |
8e5686874 TOMOYO: Small cle... |
530 531 532 533 534 535 536 537 538 539 540 541 |
static s8 tomoyo_find_yesno(const char *string, const char *find) { const char *cp = strstr(string, find); if (cp) { cp += strlen(find); if (!strncmp(cp, "=yes", 4)) return 1; else if (!strncmp(cp, "=no", 3)) return 0; } return -1; } |
d5ca1725a TOMOYO: Simplify ... |
542 543 544 545 546 547 548 549 550 |
/** * tomoyo_set_uint - Set value for specified preference. * * @i: Pointer to "unsigned int". * @string: String to check. * @find: Name of keyword. * * Returns nothing. */ |
8e5686874 TOMOYO: Small cle... |
551 552 553 554 555 556 557 |
static void tomoyo_set_uint(unsigned int *i, const char *string, const char *find) { const char *cp = strstr(string, find); if (cp) sscanf(cp + strlen(find), "=%u", i); } |
d5ca1725a TOMOYO: Simplify ... |
558 559 560 561 562 563 564 565 566 |
/** * tomoyo_set_mode - Set mode for specified profile. * * @name: Name of functionality. * @value: Mode for @name. * @profile: Pointer to "struct tomoyo_profile". * * Returns 0 on success, negative value otherwise. */ |
8e5686874 TOMOYO: Small cle... |
567 |
static int tomoyo_set_mode(char *name, const char *value, |
8e5686874 TOMOYO: Small cle... |
568 569 570 571 572 573 574 575 576 577 578 |
struct tomoyo_profile *profile) { u8 i; u8 config; if (!strcmp(name, "CONFIG")) { i = TOMOYO_MAX_MAC_INDEX + TOMOYO_MAX_MAC_CATEGORY_INDEX; config = profile->default_config; } else if (tomoyo_str_starts(&name, "CONFIG::")) { config = 0; for (i = 0; i < TOMOYO_MAX_MAC_INDEX + TOMOYO_MAX_MAC_CATEGORY_INDEX; i++) { |
2c47ab935 TOMOYO: Cleanup p... |
579 580 581 582 583 584 585 586 587 588 589 |
int len = 0; if (i < TOMOYO_MAX_MAC_INDEX) { const u8 c = tomoyo_index2category[i]; const char *category = tomoyo_category_keywords[c]; len = strlen(category); if (strncmp(name, category, len) || name[len++] != ':' || name[len++] != ':') continue; } if (strcmp(name + len, tomoyo_mac_keywords[i])) |
8e5686874 TOMOYO: Small cle... |
590 591 592 593 594 595 596 597 598 |
continue; config = profile->config[i]; break; } if (i == TOMOYO_MAX_MAC_INDEX + TOMOYO_MAX_MAC_CATEGORY_INDEX) return -EINVAL; } else { return -EINVAL; } |
d5ca1725a TOMOYO: Simplify ... |
599 |
if (strstr(value, "use_default")) { |
8e5686874 TOMOYO: Small cle... |
600 601 602 603 604 605 606 607 608 609 |
config = TOMOYO_CONFIG_USE_DEFAULT; } else { u8 mode; for (mode = 0; mode < 4; mode++) if (strstr(value, tomoyo_mode[mode])) /* * Update lower 3 bits in order to distinguish * 'config' from 'TOMOYO_CONFIG_USE_DEAFULT'. */ config = (config & ~7) | mode; |
eadd99cc8 TOMOYO: Add audit... |
610 611 612 613 614 615 616 617 618 619 620 621 622 623 624 625 626 627 |
if (config != TOMOYO_CONFIG_USE_DEFAULT) { switch (tomoyo_find_yesno(value, "grant_log")) { case 1: config |= TOMOYO_CONFIG_WANT_GRANT_LOG; break; case 0: config &= ~TOMOYO_CONFIG_WANT_GRANT_LOG; break; } switch (tomoyo_find_yesno(value, "reject_log")) { case 1: config |= TOMOYO_CONFIG_WANT_REJECT_LOG; break; case 0: config &= ~TOMOYO_CONFIG_WANT_REJECT_LOG; break; } } |
8e5686874 TOMOYO: Small cle... |
628 629 630 631 632 633 634 |
} if (i < TOMOYO_MAX_MAC_INDEX + TOMOYO_MAX_MAC_CATEGORY_INDEX) profile->config[i] = config; else if (config != TOMOYO_CONFIG_USE_DEFAULT) profile->default_config = config; return 0; } |
57c2590fb TOMOYO: Update pr... |
635 636 |
/** * tomoyo_write_profile - Write profile table. |
9590837b8 Common functions ... |
637 638 639 640 641 642 643 644 645 |
* * @head: Pointer to "struct tomoyo_io_buffer". * * Returns 0 on success, negative value otherwise. */ static int tomoyo_write_profile(struct tomoyo_io_buffer *head) { char *data = head->write_buf; unsigned int i; |
9590837b8 Common functions ... |
646 647 |
char *cp; struct tomoyo_profile *profile; |
bd03a3e4c TOMOYO: Add polic... |
648 649 |
if (sscanf(data, "PROFILE_VERSION=%u", &head->w.ns->profile_version) == 1) |
57c2590fb TOMOYO: Update pr... |
650 651 |
return 0; i = simple_strtoul(data, &cp, 10); |
d5ca1725a TOMOYO: Simplify ... |
652 653 654 |
if (*cp != '-') return -EINVAL; data = cp + 1; |
bd03a3e4c TOMOYO: Add polic... |
655 |
profile = tomoyo_assign_profile(head->w.ns, i); |
d5ca1725a TOMOYO: Simplify ... |
656 657 |
if (!profile) return -EINVAL; |
9590837b8 Common functions ... |
658 659 660 |
cp = strchr(data, '='); if (!cp) return -EINVAL; |
57c2590fb TOMOYO: Update pr... |
661 |
*cp++ = '\0'; |
9590837b8 Common functions ... |
662 |
if (!strcmp(data, "COMMENT")) { |
2a086e5d3 TOMOYO: Fix race ... |
663 664 665 666 667 668 669 670 671 672 |
static DEFINE_SPINLOCK(lock); const struct tomoyo_path_info *new_comment = tomoyo_get_name(cp); const struct tomoyo_path_info *old_comment; if (!new_comment) return -ENOMEM; spin_lock(&lock); old_comment = profile->comment; profile->comment = new_comment; spin_unlock(&lock); |
bf24fb016 TOMOYO: Add refco... |
673 |
tomoyo_put_name(old_comment); |
9590837b8 Common functions ... |
674 675 |
return 0; } |
d5ca1725a TOMOYO: Simplify ... |
676 677 678 679 680 |
if (!strcmp(data, "PREFERENCE")) { for (i = 0; i < TOMOYO_MAX_PREF; i++) tomoyo_set_uint(&profile->pref[i], cp, tomoyo_pref_keywords[i]); return 0; |
f23571e86 TOMOYO: Copy dire... |
681 |
} |
d5ca1725a TOMOYO: Simplify ... |
682 |
return tomoyo_set_mode(data, cp, profile); |
f23571e86 TOMOYO: Copy dire... |
683 |
} |
eadd99cc8 TOMOYO: Add audit... |
684 685 686 687 688 689 690 691 692 693 |
/** * tomoyo_print_config - Print mode for specified functionality. * * @head: Pointer to "struct tomoyo_io_buffer". * @config: Mode for that functionality. * * Returns nothing. * * Caller prints functionality's name. */ |
f23571e86 TOMOYO: Copy dire... |
694 695 |
static void tomoyo_print_config(struct tomoyo_io_buffer *head, const u8 config) { |
eadd99cc8 TOMOYO: Add audit... |
696 697 698 699 700 |
tomoyo_io_printf(head, "={ mode=%s grant_log=%s reject_log=%s } ", tomoyo_mode[config & 3], tomoyo_yesno(config & TOMOYO_CONFIG_WANT_GRANT_LOG), tomoyo_yesno(config & TOMOYO_CONFIG_WANT_REJECT_LOG)); |
f23571e86 TOMOYO: Copy dire... |
701 |
} |
9590837b8 Common functions ... |
702 |
/** |
57c2590fb TOMOYO: Update pr... |
703 |
* tomoyo_read_profile - Read profile table. |
9590837b8 Common functions ... |
704 705 |
* * @head: Pointer to "struct tomoyo_io_buffer". |
eadd99cc8 TOMOYO: Add audit... |
706 707 |
* * Returns nothing. |
9590837b8 Common functions ... |
708 |
*/ |
8fbe71f0e TOMOYO: Make read... |
709 |
static void tomoyo_read_profile(struct tomoyo_io_buffer *head) |
9590837b8 Common functions ... |
710 |
{ |
f23571e86 TOMOYO: Copy dire... |
711 |
u8 index; |
bd03a3e4c TOMOYO: Add polic... |
712 713 |
struct tomoyo_policy_namespace *ns = container_of(head->r.ns, typeof(*ns), namespace_list); |
f23571e86 TOMOYO: Copy dire... |
714 |
const struct tomoyo_profile *profile; |
bd03a3e4c TOMOYO: Add polic... |
715 716 |
if (head->r.eof) return; |
f23571e86 TOMOYO: Copy dire... |
717 718 |
next: index = head->r.index; |
bd03a3e4c TOMOYO: Add polic... |
719 |
profile = ns->profile_ptr[index]; |
f23571e86 TOMOYO: Copy dire... |
720 721 |
switch (head->r.step) { case 0: |
bd03a3e4c TOMOYO: Add polic... |
722 723 724 725 |
tomoyo_print_namespace(head); tomoyo_io_printf(head, "PROFILE_VERSION=%u ", ns->profile_version); |
f23571e86 TOMOYO: Copy dire... |
726 727 728 729 730 |
head->r.step++; break; case 1: for ( ; head->r.index < TOMOYO_MAX_PROFILES; head->r.index++) |
bd03a3e4c TOMOYO: Add polic... |
731 |
if (ns->profile_ptr[head->r.index]) |
f23571e86 TOMOYO: Copy dire... |
732 |
break; |
4d8189713 TOMOYO: Fix incom... |
733 734 |
if (head->r.index == TOMOYO_MAX_PROFILES) { head->r.eof = true; |
f23571e86 TOMOYO: Copy dire... |
735 |
return; |
4d8189713 TOMOYO: Fix incom... |
736 |
} |
f23571e86 TOMOYO: Copy dire... |
737 738 739 740 |
head->r.step++; break; case 2: { |
d5ca1725a TOMOYO: Simplify ... |
741 |
u8 i; |
f23571e86 TOMOYO: Copy dire... |
742 743 |
const struct tomoyo_path_info *comment = profile->comment; |
bd03a3e4c TOMOYO: Add polic... |
744 |
tomoyo_print_namespace(head); |
f23571e86 TOMOYO: Copy dire... |
745 746 747 |
tomoyo_io_printf(head, "%u-COMMENT=", index); tomoyo_set_string(head, comment ? comment->name : ""); tomoyo_set_lf(head); |
4d8189713 TOMOYO: Fix incom... |
748 |
tomoyo_print_namespace(head); |
d5ca1725a TOMOYO: Simplify ... |
749 750 751 752 753 754 755 |
tomoyo_io_printf(head, "%u-PREFERENCE={ ", index); for (i = 0; i < TOMOYO_MAX_PREF; i++) tomoyo_io_printf(head, "%s=%u ", tomoyo_pref_keywords[i], profile->pref[i]); tomoyo_set_string(head, "} "); |
f23571e86 TOMOYO: Copy dire... |
756 757 758 759 760 |
head->r.step++; } break; case 3: { |
bd03a3e4c TOMOYO: Add polic... |
761 |
tomoyo_print_namespace(head); |
f23571e86 TOMOYO: Copy dire... |
762 763 764 765 766 767 768 769 770 771 772 |
tomoyo_io_printf(head, "%u-%s", index, "CONFIG"); tomoyo_print_config(head, profile->default_config); head->r.bit = 0; head->r.step++; } break; case 4: for ( ; head->r.bit < TOMOYO_MAX_MAC_INDEX + TOMOYO_MAX_MAC_CATEGORY_INDEX; head->r.bit++) { const u8 i = head->r.bit; const u8 config = profile->config[i]; |
57c2590fb TOMOYO: Update pr... |
773 774 |
if (config == TOMOYO_CONFIG_USE_DEFAULT) continue; |
bd03a3e4c TOMOYO: Add polic... |
775 |
tomoyo_print_namespace(head); |
2c47ab935 TOMOYO: Cleanup p... |
776 777 778 779 780 781 782 783 784 |
if (i < TOMOYO_MAX_MAC_INDEX) tomoyo_io_printf(head, "%u-CONFIG::%s::%s", index, tomoyo_category_keywords [tomoyo_index2category[i]], tomoyo_mac_keywords[i]); else tomoyo_io_printf(head, "%u-CONFIG::%s", index, tomoyo_mac_keywords[i]); |
f23571e86 TOMOYO: Copy dire... |
785 786 787 788 789 790 |
tomoyo_print_config(head, config); head->r.bit++; break; } if (head->r.bit == TOMOYO_MAX_MAC_INDEX + TOMOYO_MAX_MAC_CATEGORY_INDEX) { |
f23571e86 TOMOYO: Copy dire... |
791 792 |
head->r.index++; head->r.step = 1; |
9590837b8 Common functions ... |
793 |
} |
57c2590fb TOMOYO: Update pr... |
794 |
break; |
9590837b8 Common functions ... |
795 |
} |
f23571e86 TOMOYO: Copy dire... |
796 797 |
if (tomoyo_flush(head)) goto next; |
9590837b8 Common functions ... |
798 |
} |
0f2a55d5b TOMOYO: Update ke... |
799 800 801 802 803 804 805 806 |
/** * tomoyo_same_manager - Check for duplicated "struct tomoyo_manager" entry. * * @a: Pointer to "struct tomoyo_acl_head". * @b: Pointer to "struct tomoyo_acl_head". * * Returns true if @a == @b, false otherwise. */ |
e2bf69077 TOMOYO: Rename sy... |
807 808 |
static bool tomoyo_same_manager(const struct tomoyo_acl_head *a, const struct tomoyo_acl_head *b) |
36f5e1ffb TOMOYO: Use callb... |
809 |
{ |
e2bf69077 TOMOYO: Rename sy... |
810 811 |
return container_of(a, struct tomoyo_manager, head)->manager == container_of(b, struct tomoyo_manager, head)->manager; |
36f5e1ffb TOMOYO: Use callb... |
812 |
} |
9590837b8 Common functions ... |
813 814 815 816 817 818 819 |
/** * tomoyo_update_manager_entry - Add a manager entry. * * @manager: The path to manager or the domainnamme. * @is_delete: True if it is a delete request. * * Returns 0 on success, negative value otherwise. |
fdb8ebb72 TOMOYO: Use RCU p... |
820 821 |
* * Caller holds tomoyo_read_lock(). |
9590837b8 Common functions ... |
822 823 824 825 |
*/ static int tomoyo_update_manager_entry(const char *manager, const bool is_delete) { |
e2bf69077 TOMOYO: Rename sy... |
826 |
struct tomoyo_manager e = { }; |
a238cf5b8 TOMOYO: Use struc... |
827 |
struct tomoyo_acl_param param = { |
bd03a3e4c TOMOYO: Add polic... |
828 |
/* .ns = &tomoyo_kernel_namespace, */ |
a238cf5b8 TOMOYO: Use struc... |
829 |
.is_delete = is_delete, |
bd03a3e4c TOMOYO: Add polic... |
830 831 |
.list = &tomoyo_kernel_namespace. policy_list[TOMOYO_ID_MANAGER], |
a238cf5b8 TOMOYO: Use struc... |
832 833 |
}; int error = is_delete ? -ENOENT : -ENOMEM; |
77b513dda TOMOYO: Accept ma... |
834 835 836 |
if (!tomoyo_correct_domain(manager) && !tomoyo_correct_word(manager)) return -EINVAL; |
9e4b50e93 TOMOYO: Use stack... |
837 |
e.manager = tomoyo_get_name(manager); |
a238cf5b8 TOMOYO: Use struc... |
838 839 840 841 842 |
if (e.manager) { error = tomoyo_update_policy(&e.head, sizeof(e), ¶m, tomoyo_same_manager); tomoyo_put_name(e.manager); } |
9590837b8 Common functions ... |
843 844 845 846 |
return error; } /** |
e2bf69077 TOMOYO: Rename sy... |
847 |
* tomoyo_write_manager - Write manager policy. |
9590837b8 Common functions ... |
848 849 850 851 |
* * @head: Pointer to "struct tomoyo_io_buffer". * * Returns 0 on success, negative value otherwise. |
fdb8ebb72 TOMOYO: Use RCU p... |
852 853 |
* * Caller holds tomoyo_read_lock(). |
9590837b8 Common functions ... |
854 |
*/ |
e2bf69077 TOMOYO: Rename sy... |
855 |
static int tomoyo_write_manager(struct tomoyo_io_buffer *head) |
9590837b8 Common functions ... |
856 857 |
{ char *data = head->write_buf; |
9590837b8 Common functions ... |
858 859 |
if (!strcmp(data, "manage_by_non_root")) { |
bd03a3e4c TOMOYO: Add polic... |
860 |
tomoyo_manage_by_non_root = !head->w.is_delete; |
9590837b8 Common functions ... |
861 862 |
return 0; } |
bd03a3e4c TOMOYO: Add polic... |
863 |
return tomoyo_update_manager_entry(data, head->w.is_delete); |
9590837b8 Common functions ... |
864 865 866 |
} /** |
e2bf69077 TOMOYO: Rename sy... |
867 |
* tomoyo_read_manager - Read manager policy. |
9590837b8 Common functions ... |
868 869 870 |
* * @head: Pointer to "struct tomoyo_io_buffer". * |
fdb8ebb72 TOMOYO: Use RCU p... |
871 |
* Caller holds tomoyo_read_lock(). |
9590837b8 Common functions ... |
872 |
*/ |
e2bf69077 TOMOYO: Rename sy... |
873 |
static void tomoyo_read_manager(struct tomoyo_io_buffer *head) |
9590837b8 Common functions ... |
874 |
{ |
f23571e86 TOMOYO: Copy dire... |
875 |
if (head->r.eof) |
8fbe71f0e TOMOYO: Make read... |
876 |
return; |
bd03a3e4c TOMOYO: Add polic... |
877 878 |
list_for_each_cookie(head->r.acl, &tomoyo_kernel_namespace. policy_list[TOMOYO_ID_MANAGER]) { |
e2bf69077 TOMOYO: Rename sy... |
879 |
struct tomoyo_manager *ptr = |
f23571e86 TOMOYO: Copy dire... |
880 |
list_entry(head->r.acl, typeof(*ptr), head.list); |
82e0f001a TOMOYO: Use commo... |
881 |
if (ptr->head.is_deleted) |
9590837b8 Common functions ... |
882 |
continue; |
f23571e86 TOMOYO: Copy dire... |
883 884 885 886 |
if (!tomoyo_flush(head)) return; tomoyo_set_string(head, ptr->manager->name); tomoyo_set_lf(head); |
9590837b8 Common functions ... |
887 |
} |
f23571e86 TOMOYO: Copy dire... |
888 |
head->r.eof = true; |
9590837b8 Common functions ... |
889 890 891 |
} /** |
e2bf69077 TOMOYO: Rename sy... |
892 |
* tomoyo_manager - Check whether the current process is a policy manager. |
9590837b8 Common functions ... |
893 894 895 |
* * Returns true if the current process is permitted to modify policy * via /sys/kernel/security/tomoyo/ interface. |
fdb8ebb72 TOMOYO: Use RCU p... |
896 897 |
* * Caller holds tomoyo_read_lock(). |
9590837b8 Common functions ... |
898 |
*/ |
e2bf69077 TOMOYO: Rename sy... |
899 |
static bool tomoyo_manager(void) |
9590837b8 Common functions ... |
900 |
{ |
e2bf69077 TOMOYO: Rename sy... |
901 |
struct tomoyo_manager *ptr; |
9590837b8 Common functions ... |
902 903 904 905 906 907 908 |
const char *exe; const struct task_struct *task = current; const struct tomoyo_path_info *domainname = tomoyo_domain()->domainname; bool found = false; if (!tomoyo_policy_loaded) return true; |
609fcd1b3 userns: Convert t... |
909 910 911 |
if (!tomoyo_manage_by_non_root && (!uid_eq(task->cred->uid, GLOBAL_ROOT_UID) || !uid_eq(task->cred->euid, GLOBAL_ROOT_UID))) |
9590837b8 Common functions ... |
912 |
return false; |
9590837b8 Common functions ... |
913 914 915 |
exe = tomoyo_get_exe(); if (!exe) return false; |
bd03a3e4c TOMOYO: Add polic... |
916 917 |
list_for_each_entry_rcu(ptr, &tomoyo_kernel_namespace. policy_list[TOMOYO_ID_MANAGER], head.list) { |
77b513dda TOMOYO: Accept ma... |
918 919 920 |
if (!ptr->head.is_deleted && (!tomoyo_pathcmp(domainname, ptr->manager) || !strcmp(exe, ptr->manager->name))) { |
9590837b8 Common functions ... |
921 922 923 924 |
found = true; break; } } |
9590837b8 Common functions ... |
925 926 927 928 929 930 931 932 933 934 |
if (!found) { /* Reduce error messages. */ static pid_t last_pid; const pid_t pid = current->pid; if (last_pid != pid) { printk(KERN_WARNING "%s ( %s ) is not permitted to " "update policies. ", domainname->name, exe); last_pid = pid; } } |
8e2d39a16 TOMOYO: Remove us... |
935 |
kfree(exe); |
9590837b8 Common functions ... |
936 937 |
return found; } |
59df3166e TOMOYO: Fix inter... |
938 939 |
static struct tomoyo_domain_info *tomoyo_find_domain_by_qid (unsigned int serial); |
9590837b8 Common functions ... |
940 |
/** |
bd03a3e4c TOMOYO: Add polic... |
941 |
* tomoyo_select_domain - Parse select command. |
9590837b8 Common functions ... |
942 943 944 945 946 |
* * @head: Pointer to "struct tomoyo_io_buffer". * @data: String to parse. * * Returns true on success, false otherwise. |
fdb8ebb72 TOMOYO: Use RCU p... |
947 948 |
* * Caller holds tomoyo_read_lock(). |
9590837b8 Common functions ... |
949 |
*/ |
bd03a3e4c TOMOYO: Add polic... |
950 951 |
static bool tomoyo_select_domain(struct tomoyo_io_buffer *head, const char *data) |
9590837b8 Common functions ... |
952 953 954 |
{ unsigned int pid; struct tomoyo_domain_info *domain = NULL; |
9b244373d TOMOYO: Several f... |
955 |
bool global_pid = false; |
bd03a3e4c TOMOYO: Add polic... |
956 957 958 |
if (strncmp(data, "select ", 7)) return false; data += 7; |
9b244373d TOMOYO: Several f... |
959 960 |
if (sscanf(data, "pid=%u", &pid) == 1 || (global_pid = true, sscanf(data, "global-pid=%u", &pid) == 1)) { |
9590837b8 Common functions ... |
961 |
struct task_struct *p; |
1fcdc7c52 TOMOYO: Protect f... |
962 |
rcu_read_lock(); |
9b244373d TOMOYO: Several f... |
963 964 965 966 |
if (global_pid) p = find_task_by_pid_ns(pid, &init_pid_ns); else p = find_task_by_vpid(pid); |
9590837b8 Common functions ... |
967 968 |
if (p) domain = tomoyo_real_domain(p); |
1fcdc7c52 TOMOYO: Protect f... |
969 |
rcu_read_unlock(); |
9590837b8 Common functions ... |
970 |
} else if (!strncmp(data, "domain=", 7)) { |
75093152a TOMOYO: Rename sy... |
971 |
if (tomoyo_domain_def(data + 7)) |
9590837b8 Common functions ... |
972 |
domain = tomoyo_find_domain(data + 7); |
59df3166e TOMOYO: Fix inter... |
973 974 |
} else if (sscanf(data, "Q=%u", &pid) == 1) { domain = tomoyo_find_domain_by_qid(pid); |
9590837b8 Common functions ... |
975 976 |
} else return false; |
0df7e8b8f TOMOYO: Cleanup p... |
977 |
head->w.domain = domain; |
9590837b8 Common functions ... |
978 979 980 |
/* Accessing read_buf is safe because head->io_sem is held. */ if (!head->read_buf) return true; /* Do nothing if open(O_WRONLY). */ |
f23571e86 TOMOYO: Copy dire... |
981 982 |
memset(&head->r, 0, sizeof(head->r)); head->r.print_this_domain_only = true; |
68eda8f59 tomoyo: cleanup. ... |
983 984 985 986 |
if (domain) head->r.domain = &domain->list; else head->r.eof = 1; |
9590837b8 Common functions ... |
987 988 |
tomoyo_io_printf(head, "# select %s ", data); |
475e6fa3d TOMOYO: Change li... |
989 990 991 |
if (domain && domain->is_deleted) tomoyo_io_printf(head, "# This is a deleted domain. "); |
9590837b8 Common functions ... |
992 993 994 995 |
return true; } /** |
731d37aa7 TOMOYO: Allow dom... |
996 997 998 999 1000 1001 1002 1003 1004 1005 1006 1007 1008 1009 1010 1011 1012 1013 1014 1015 1016 1017 1018 1019 1020 1021 1022 1023 1024 1025 1026 1027 1028 1029 1030 1031 1032 1033 1034 1035 1036 1037 |
* tomoyo_same_task_acl - Check for duplicated "struct tomoyo_task_acl" entry. * * @a: Pointer to "struct tomoyo_acl_info". * @b: Pointer to "struct tomoyo_acl_info". * * Returns true if @a == @b, false otherwise. */ static bool tomoyo_same_task_acl(const struct tomoyo_acl_info *a, const struct tomoyo_acl_info *b) { const struct tomoyo_task_acl *p1 = container_of(a, typeof(*p1), head); const struct tomoyo_task_acl *p2 = container_of(b, typeof(*p2), head); return p1->domainname == p2->domainname; } /** * tomoyo_write_task - Update task related list. * * @param: Pointer to "struct tomoyo_acl_param". * * Returns 0 on success, negative value otherwise. * * Caller holds tomoyo_read_lock(). */ static int tomoyo_write_task(struct tomoyo_acl_param *param) { int error = -EINVAL; if (tomoyo_str_starts(¶m->data, "manual_domain_transition ")) { struct tomoyo_task_acl e = { .head.type = TOMOYO_TYPE_MANUAL_TASK_ACL, .domainname = tomoyo_get_domainname(param), }; if (e.domainname) error = tomoyo_update_domain(&e.head, sizeof(e), param, tomoyo_same_task_acl, NULL); tomoyo_put_name(e.domainname); } return error; } /** |
ccf135f50 TOMOYO: Move tomo... |
1038 1039 1040 1041 |
* tomoyo_delete_domain - Delete a domain. * * @domainname: The name of domain. * |
7d7473dbd TOMOYO: Return er... |
1042 |
* Returns 0 on success, negative value otherwise. |
fdb8ebb72 TOMOYO: Use RCU p... |
1043 1044 |
* * Caller holds tomoyo_read_lock(). |
ccf135f50 TOMOYO: Move tomo... |
1045 1046 1047 1048 1049 1050 1051 1052 |
*/ static int tomoyo_delete_domain(char *domainname) { struct tomoyo_domain_info *domain; struct tomoyo_path_info name; name.name = domainname; tomoyo_fill_path_info(&name); |
292823814 TOMOYO: Use mutex... |
1053 |
if (mutex_lock_interruptible(&tomoyo_policy_lock)) |
7d7473dbd TOMOYO: Return er... |
1054 |
return -EINTR; |
ccf135f50 TOMOYO: Move tomo... |
1055 |
/* Is there an active domain? */ |
fdb8ebb72 TOMOYO: Use RCU p... |
1056 |
list_for_each_entry_rcu(domain, &tomoyo_domain_list, list) { |
ccf135f50 TOMOYO: Move tomo... |
1057 1058 1059 1060 1061 1062 1063 1064 1065 |
/* Never delete tomoyo_kernel_domain */ if (domain == &tomoyo_kernel_domain) continue; if (domain->is_deleted || tomoyo_pathcmp(domain->domainname, &name)) continue; domain->is_deleted = true; break; } |
f737d95dd TOMOYO: Replace r... |
1066 |
mutex_unlock(&tomoyo_policy_lock); |
ccf135f50 TOMOYO: Move tomo... |
1067 1068 1069 1070 |
return 0; } /** |
e2bf69077 TOMOYO: Rename sy... |
1071 |
* tomoyo_write_domain2 - Write domain policy. |
17fcfbd9d TOMOYO: Add inter... |
1072 |
* |
bd03a3e4c TOMOYO: Add polic... |
1073 |
* @ns: Pointer to "struct tomoyo_policy_namespace". |
a238cf5b8 TOMOYO: Use struc... |
1074 1075 1076 |
* @list: Pointer to "struct list_head". * @data: Policy to be interpreted. * @is_delete: True if it is a delete request. |
17fcfbd9d TOMOYO: Add inter... |
1077 1078 1079 1080 1081 |
* * Returns 0 on success, negative value otherwise. * * Caller holds tomoyo_read_lock(). */ |
bd03a3e4c TOMOYO: Add polic... |
1082 1083 |
static int tomoyo_write_domain2(struct tomoyo_policy_namespace *ns, struct list_head *list, char *data, |
e2bf69077 TOMOYO: Rename sy... |
1084 |
const bool is_delete) |
17fcfbd9d TOMOYO: Add inter... |
1085 |
{ |
a238cf5b8 TOMOYO: Use struc... |
1086 |
struct tomoyo_acl_param param = { |
bd03a3e4c TOMOYO: Add polic... |
1087 |
.ns = ns, |
a238cf5b8 TOMOYO: Use struc... |
1088 1089 1090 1091 1092 1093 1094 |
.list = list, .data = data, .is_delete = is_delete, }; static const struct { const char *keyword; int (*write) (struct tomoyo_acl_param *); |
731d37aa7 TOMOYO: Allow dom... |
1095 |
} tomoyo_callback[5] = { |
a238cf5b8 TOMOYO: Use struc... |
1096 |
{ "file ", tomoyo_write_file }, |
059d84dbb TOMOYO: Add socke... |
1097 1098 |
{ "network inet ", tomoyo_write_inet_network }, { "network unix ", tomoyo_write_unix_network }, |
d58e0da85 TOMOYO: Add envir... |
1099 |
{ "misc ", tomoyo_write_misc }, |
731d37aa7 TOMOYO: Allow dom... |
1100 |
{ "task ", tomoyo_write_task }, |
a238cf5b8 TOMOYO: Use struc... |
1101 1102 |
}; u8 i; |
d58e0da85 TOMOYO: Add envir... |
1103 1104 |
for (i = 0; i < ARRAY_SIZE(tomoyo_callback); i++) { |
a238cf5b8 TOMOYO: Use struc... |
1105 1106 1107 1108 1109 1110 |
if (!tomoyo_str_starts(¶m.data, tomoyo_callback[i].keyword)) continue; return tomoyo_callback[i].write(¶m); } return -EINVAL; |
17fcfbd9d TOMOYO: Add inter... |
1111 |
} |
2c47ab935 TOMOYO: Cleanup p... |
1112 1113 1114 1115 1116 1117 1118 |
/* String table for domain flags. */ const char * const tomoyo_dif[TOMOYO_MAX_DOMAIN_INFO_FLAGS] = { [TOMOYO_DIF_QUOTA_WARNED] = "quota_exceeded ", [TOMOYO_DIF_TRANSITION_FAILED] = "transition_failed ", }; |
17fcfbd9d TOMOYO: Add inter... |
1119 |
/** |
e2bf69077 TOMOYO: Rename sy... |
1120 |
* tomoyo_write_domain - Write domain policy. |
9590837b8 Common functions ... |
1121 1122 1123 1124 |
* * @head: Pointer to "struct tomoyo_io_buffer". * * Returns 0 on success, negative value otherwise. |
fdb8ebb72 TOMOYO: Use RCU p... |
1125 1126 |
* * Caller holds tomoyo_read_lock(). |
9590837b8 Common functions ... |
1127 |
*/ |
e2bf69077 TOMOYO: Rename sy... |
1128 |
static int tomoyo_write_domain(struct tomoyo_io_buffer *head) |
9590837b8 Common functions ... |
1129 1130 |
{ char *data = head->write_buf; |
bd03a3e4c TOMOYO: Add polic... |
1131 |
struct tomoyo_policy_namespace *ns; |
0df7e8b8f TOMOYO: Cleanup p... |
1132 |
struct tomoyo_domain_info *domain = head->w.domain; |
bd03a3e4c TOMOYO: Add polic... |
1133 1134 |
const bool is_delete = head->w.is_delete; bool is_select = !is_delete && tomoyo_str_starts(&data, "select "); |
9590837b8 Common functions ... |
1135 |
unsigned int profile; |
bd03a3e4c TOMOYO: Add polic... |
1136 |
if (*data == '<') { |
7d7473dbd TOMOYO: Return er... |
1137 |
int ret = 0; |
9590837b8 Common functions ... |
1138 1139 |
domain = NULL; if (is_delete) |
7d7473dbd TOMOYO: Return er... |
1140 |
ret = tomoyo_delete_domain(data); |
fdb8ebb72 TOMOYO: Use RCU p... |
1141 |
else if (is_select) |
9590837b8 Common functions ... |
1142 |
domain = tomoyo_find_domain(data); |
fdb8ebb72 TOMOYO: Use RCU p... |
1143 |
else |
bd03a3e4c TOMOYO: Add polic... |
1144 |
domain = tomoyo_assign_domain(data, false); |
0df7e8b8f TOMOYO: Cleanup p... |
1145 |
head->w.domain = domain; |
7d7473dbd TOMOYO: Return er... |
1146 |
return ret; |
9590837b8 Common functions ... |
1147 1148 1149 |
} if (!domain) return -EINVAL; |
bd03a3e4c TOMOYO: Add polic... |
1150 |
ns = domain->ns; |
b5bc60b4c TOMOYO: Cleanup p... |
1151 |
if (sscanf(data, "use_profile %u", &profile) == 1 |
9590837b8 Common functions ... |
1152 |
&& profile < TOMOYO_MAX_PROFILES) { |
bd03a3e4c TOMOYO: Add polic... |
1153 |
if (!tomoyo_policy_loaded || ns->profile_ptr[profile]) |
9590837b8 Common functions ... |
1154 1155 1156 |
domain->profile = (u8) profile; return 0; } |
32997144f TOMOYO: Add ACL g... |
1157 1158 1159 1160 1161 1162 1163 |
if (sscanf(data, "use_group %u ", &profile) == 1 && profile < TOMOYO_MAX_ACL_GROUPS) { if (!is_delete) domain->group = (u8) profile; return 0; } |
2c47ab935 TOMOYO: Cleanup p... |
1164 1165 1166 1167 1168 |
for (profile = 0; profile < TOMOYO_MAX_DOMAIN_INFO_FLAGS; profile++) { const char *cp = tomoyo_dif[profile]; if (strncmp(data, cp, strlen(cp) - 1)) continue; domain->flags[profile] = !is_delete; |
9b244373d TOMOYO: Several f... |
1169 1170 |
return 0; } |
bd03a3e4c TOMOYO: Add polic... |
1171 1172 |
return tomoyo_write_domain2(ns, &domain->acl_info_list, data, is_delete); |
9590837b8 Common functions ... |
1173 1174 1175 |
} /** |
2066a3612 TOMOYO: Allow usi... |
1176 1177 1178 1179 1180 1181 1182 1183 1184 1185 1186 1187 1188 1189 |
* tomoyo_print_condition - Print condition part. * * @head: Pointer to "struct tomoyo_io_buffer". * @cond: Pointer to "struct tomoyo_condition". * * Returns true on success, false otherwise. */ static bool tomoyo_print_condition(struct tomoyo_io_buffer *head, const struct tomoyo_condition *cond) { switch (head->r.cond_step) { case 0: head->r.cond_index = 0; head->r.cond_step++; |
6bce98edc TOMOYO: Allow spe... |
1190 1191 1192 1193 |
if (cond->transit) { tomoyo_set_space(head); tomoyo_set_string(head, cond->transit->name); } |
2066a3612 TOMOYO: Allow usi... |
1194 1195 1196 1197 1198 1199 1200 1201 |
/* fall through */ case 1: { const u16 condc = cond->condc; const struct tomoyo_condition_element *condp = (typeof(condp)) (cond + 1); const struct tomoyo_number_union *numbers_p = (typeof(numbers_p)) (condp + condc); |
2ca9bf453 TOMOYO: Allow usi... |
1202 1203 1204 |
const struct tomoyo_name_union *names_p = (typeof(names_p)) (numbers_p + cond->numbers_count); |
5b636857f TOMOYO: Allow usi... |
1205 1206 1207 1208 |
const struct tomoyo_argv *argv = (typeof(argv)) (names_p + cond->names_count); const struct tomoyo_envp *envp = (typeof(envp)) (argv + cond->argc); |
2066a3612 TOMOYO: Allow usi... |
1209 1210 1211 1212 1213 1214 |
u16 skip; for (skip = 0; skip < head->r.cond_index; skip++) { const u8 left = condp->left; const u8 right = condp->right; condp++; switch (left) { |
5b636857f TOMOYO: Allow usi... |
1215 1216 1217 1218 1219 1220 |
case TOMOYO_ARGV_ENTRY: argv++; continue; case TOMOYO_ENVP_ENTRY: envp++; continue; |
2066a3612 TOMOYO: Allow usi... |
1221 1222 1223 1224 1225 |
case TOMOYO_NUMBER_UNION: numbers_p++; break; } switch (right) { |
2ca9bf453 TOMOYO: Allow usi... |
1226 1227 1228 |
case TOMOYO_NAME_UNION: names_p++; break; |
2066a3612 TOMOYO: Allow usi... |
1229 1230 1231 1232 1233 1234 1235 1236 1237 1238 1239 1240 1241 1242 1243 |
case TOMOYO_NUMBER_UNION: numbers_p++; break; } } while (head->r.cond_index < condc) { const u8 match = condp->equals; const u8 left = condp->left; const u8 right = condp->right; if (!tomoyo_flush(head)) return false; condp++; head->r.cond_index++; tomoyo_set_space(head); switch (left) { |
5b636857f TOMOYO: Allow usi... |
1244 1245 1246 1247 1248 1249 1250 1251 1252 1253 1254 1255 1256 1257 1258 1259 1260 1261 1262 1263 1264 1265 1266 1267 1268 1269 1270 1271 |
case TOMOYO_ARGV_ENTRY: tomoyo_io_printf(head, "exec.argv[%lu]%s=\"", argv->index, argv-> is_not ? "!" : ""); tomoyo_set_string(head, argv->value->name); tomoyo_set_string(head, "\""); argv++; continue; case TOMOYO_ENVP_ENTRY: tomoyo_set_string(head, "exec.envp[\""); tomoyo_set_string(head, envp->name->name); tomoyo_io_printf(head, "\"]%s=", envp-> is_not ? "!" : ""); if (envp->value) { tomoyo_set_string(head, "\""); tomoyo_set_string(head, envp-> value->name); tomoyo_set_string(head, "\""); } else { tomoyo_set_string(head, "NULL"); } envp++; continue; |
2066a3612 TOMOYO: Allow usi... |
1272 1273 1274 1275 1276 1277 1278 1279 1280 1281 1282 |
case TOMOYO_NUMBER_UNION: tomoyo_print_number_union_nospace (head, numbers_p++); break; default: tomoyo_set_string(head, tomoyo_condition_keyword[left]); break; } tomoyo_set_string(head, match ? "=" : "!="); switch (right) { |
2ca9bf453 TOMOYO: Allow usi... |
1283 1284 1285 1286 |
case TOMOYO_NAME_UNION: tomoyo_print_name_union_quoted (head, names_p++); break; |
2066a3612 TOMOYO: Allow usi... |
1287 1288 1289 1290 1291 1292 1293 1294 1295 1296 1297 1298 1299 1300 1301 1302 1303 1304 1305 |
case TOMOYO_NUMBER_UNION: tomoyo_print_number_union_nospace (head, numbers_p++); break; default: tomoyo_set_string(head, tomoyo_condition_keyword[right]); break; } } } head->r.cond_step++; /* fall through */ case 2: if (!tomoyo_flush(head)) break; head->r.cond_step++; /* fall through */ case 3: |
1f067a682 TOMOYO: Allow con... |
1306 1307 1308 1309 |
if (cond->grant_log != TOMOYO_GRANTLOG_AUTO) tomoyo_io_printf(head, " grant_log=%s", tomoyo_yesno(cond->grant_log == TOMOYO_GRANTLOG_YES)); |
2066a3612 TOMOYO: Allow usi... |
1310 1311 1312 1313 1314 1315 1316 |
tomoyo_set_lf(head); return true; } return false; } /** |
32997144f TOMOYO: Add ACL g... |
1317 |
* tomoyo_set_group - Print "acl_group " header keyword and category name. |
9590837b8 Common functions ... |
1318 |
* |
0d2171d71 TOMOYO: Rename di... |
1319 1320 |
* @head: Pointer to "struct tomoyo_io_buffer". * @category: Category name. |
9590837b8 Common functions ... |
1321 |
* |
0d2171d71 TOMOYO: Rename di... |
1322 |
* Returns nothing. |
9590837b8 Common functions ... |
1323 |
*/ |
0d2171d71 TOMOYO: Rename di... |
1324 1325 |
static void tomoyo_set_group(struct tomoyo_io_buffer *head, const char *category) |
9590837b8 Common functions ... |
1326 |
{ |
bd03a3e4c TOMOYO: Add polic... |
1327 1328 |
if (head->type == TOMOYO_EXCEPTIONPOLICY) { tomoyo_print_namespace(head); |
32997144f TOMOYO: Add ACL g... |
1329 1330 |
tomoyo_io_printf(head, "acl_group %u ", head->r.acl_group_index); |
bd03a3e4c TOMOYO: Add polic... |
1331 |
} |
0d2171d71 TOMOYO: Rename di... |
1332 |
tomoyo_set_string(head, category); |
9590837b8 Common functions ... |
1333 1334 1335 |
} /** |
5db5a39b6 TOMOYO: Use commo... |
1336 |
* tomoyo_print_entry - Print an ACL entry. |
9590837b8 Common functions ... |
1337 1338 |
* * @head: Pointer to "struct tomoyo_io_buffer". |
5db5a39b6 TOMOYO: Use commo... |
1339 |
* @acl: Pointer to an ACL entry. |
9590837b8 Common functions ... |
1340 1341 1342 |
* * Returns true on success, false otherwise. */ |
5db5a39b6 TOMOYO: Use commo... |
1343 1344 |
static bool tomoyo_print_entry(struct tomoyo_io_buffer *head, struct tomoyo_acl_info *acl) |
9590837b8 Common functions ... |
1345 |
{ |
5db5a39b6 TOMOYO: Use commo... |
1346 |
const u8 acl_type = acl->type; |
0d2171d71 TOMOYO: Rename di... |
1347 |
bool first = true; |
f23571e86 TOMOYO: Copy dire... |
1348 |
u8 bit; |
9590837b8 Common functions ... |
1349 |
|
2066a3612 TOMOYO: Allow usi... |
1350 1351 |
if (head->r.print_cond_part) goto print_cond_part; |
5db5a39b6 TOMOYO: Use commo... |
1352 1353 |
if (acl->is_deleted) return true; |
f23571e86 TOMOYO: Copy dire... |
1354 1355 1356 |
if (!tomoyo_flush(head)) return false; else if (acl_type == TOMOYO_TYPE_PATH_ACL) { |
5db5a39b6 TOMOYO: Use commo... |
1357 1358 1359 |
struct tomoyo_path_acl *ptr = container_of(acl, typeof(*ptr), head); const u16 perm = ptr->perm; |
0d2171d71 TOMOYO: Rename di... |
1360 |
for (bit = 0; bit < TOMOYO_MAX_PATH_OPERATION; bit++) { |
5db5a39b6 TOMOYO: Use commo... |
1361 1362 |
if (!(perm & (1 << bit))) continue; |
bd03a3e4c TOMOYO: Add polic... |
1363 |
if (head->r.print_transition_related_only && |
5db5a39b6 TOMOYO: Use commo... |
1364 1365 |
bit != TOMOYO_TYPE_EXECUTE) continue; |
0d2171d71 TOMOYO: Rename di... |
1366 1367 1368 1369 1370 1371 1372 |
if (first) { tomoyo_set_group(head, "file "); first = false; } else { tomoyo_set_slash(head); } tomoyo_set_string(head, tomoyo_path_keyword[bit]); |
5db5a39b6 TOMOYO: Use commo... |
1373 |
} |
0d2171d71 TOMOYO: Rename di... |
1374 1375 |
if (first) return true; |
f23571e86 TOMOYO: Copy dire... |
1376 |
tomoyo_print_name_union(head, &ptr->name); |
731d37aa7 TOMOYO: Allow dom... |
1377 1378 1379 1380 1381 1382 |
} else if (acl_type == TOMOYO_TYPE_MANUAL_TASK_ACL) { struct tomoyo_task_acl *ptr = container_of(acl, typeof(*ptr), head); tomoyo_set_group(head, "task "); tomoyo_set_string(head, "manual_domain_transition "); tomoyo_set_string(head, ptr->domainname->name); |
bd03a3e4c TOMOYO: Add polic... |
1383 |
} else if (head->r.print_transition_related_only) { |
5db5a39b6 TOMOYO: Use commo... |
1384 1385 1386 1387 |
return true; } else if (acl_type == TOMOYO_TYPE_PATH2_ACL) { struct tomoyo_path2_acl *ptr = container_of(acl, typeof(*ptr), head); |
0d2171d71 TOMOYO: Rename di... |
1388 1389 1390 1391 1392 1393 1394 1395 1396 1397 1398 1399 1400 1401 1402 |
const u8 perm = ptr->perm; for (bit = 0; bit < TOMOYO_MAX_PATH2_OPERATION; bit++) { if (!(perm & (1 << bit))) continue; if (first) { tomoyo_set_group(head, "file "); first = false; } else { tomoyo_set_slash(head); } tomoyo_set_string(head, tomoyo_mac_keywords [tomoyo_pp2mac[bit]]); } if (first) return true; |
f23571e86 TOMOYO: Copy dire... |
1403 1404 |
tomoyo_print_name_union(head, &ptr->name1); tomoyo_print_name_union(head, &ptr->name2); |
5db5a39b6 TOMOYO: Use commo... |
1405 1406 1407 |
} else if (acl_type == TOMOYO_TYPE_PATH_NUMBER_ACL) { struct tomoyo_path_number_acl *ptr = container_of(acl, typeof(*ptr), head); |
0d2171d71 TOMOYO: Rename di... |
1408 1409 1410 1411 1412 1413 1414 1415 1416 1417 1418 1419 1420 1421 1422 |
const u8 perm = ptr->perm; for (bit = 0; bit < TOMOYO_MAX_PATH_NUMBER_OPERATION; bit++) { if (!(perm & (1 << bit))) continue; if (first) { tomoyo_set_group(head, "file "); first = false; } else { tomoyo_set_slash(head); } tomoyo_set_string(head, tomoyo_mac_keywords [tomoyo_pn2mac[bit]]); } if (first) return true; |
f23571e86 TOMOYO: Copy dire... |
1423 1424 |
tomoyo_print_name_union(head, &ptr->name); tomoyo_print_number_union(head, &ptr->number); |
5db5a39b6 TOMOYO: Use commo... |
1425 1426 1427 |
} else if (acl_type == TOMOYO_TYPE_MKDEV_ACL) { struct tomoyo_mkdev_acl *ptr = container_of(acl, typeof(*ptr), head); |
0d2171d71 TOMOYO: Rename di... |
1428 1429 1430 1431 1432 1433 1434 1435 1436 1437 1438 1439 1440 1441 1442 |
const u8 perm = ptr->perm; for (bit = 0; bit < TOMOYO_MAX_MKDEV_OPERATION; bit++) { if (!(perm & (1 << bit))) continue; if (first) { tomoyo_set_group(head, "file "); first = false; } else { tomoyo_set_slash(head); } tomoyo_set_string(head, tomoyo_mac_keywords [tomoyo_pnnn2mac[bit]]); } if (first) return true; |
f23571e86 TOMOYO: Copy dire... |
1443 1444 1445 1446 |
tomoyo_print_name_union(head, &ptr->name); tomoyo_print_number_union(head, &ptr->mode); tomoyo_print_number_union(head, &ptr->major); tomoyo_print_number_union(head, &ptr->minor); |
059d84dbb TOMOYO: Add socke... |
1447 1448 1449 1450 1451 1452 1453 1454 1455 1456 1457 1458 1459 1460 1461 1462 1463 1464 1465 1466 1467 1468 1469 1470 1471 1472 1473 1474 1475 1476 1477 1478 1479 1480 1481 1482 1483 1484 1485 1486 1487 1488 1489 1490 1491 1492 1493 1494 1495 1496 1497 1498 1499 1500 |
} else if (acl_type == TOMOYO_TYPE_INET_ACL) { struct tomoyo_inet_acl *ptr = container_of(acl, typeof(*ptr), head); const u8 perm = ptr->perm; for (bit = 0; bit < TOMOYO_MAX_NETWORK_OPERATION; bit++) { if (!(perm & (1 << bit))) continue; if (first) { tomoyo_set_group(head, "network inet "); tomoyo_set_string(head, tomoyo_proto_keyword [ptr->protocol]); tomoyo_set_space(head); first = false; } else { tomoyo_set_slash(head); } tomoyo_set_string(head, tomoyo_socket_keyword[bit]); } if (first) return true; tomoyo_set_space(head); if (ptr->address.group) { tomoyo_set_string(head, "@"); tomoyo_set_string(head, ptr->address.group->group_name ->name); } else { char buf[128]; tomoyo_print_ip(buf, sizeof(buf), &ptr->address); tomoyo_io_printf(head, "%s", buf); } tomoyo_print_number_union(head, &ptr->port); } else if (acl_type == TOMOYO_TYPE_UNIX_ACL) { struct tomoyo_unix_acl *ptr = container_of(acl, typeof(*ptr), head); const u8 perm = ptr->perm; for (bit = 0; bit < TOMOYO_MAX_NETWORK_OPERATION; bit++) { if (!(perm & (1 << bit))) continue; if (first) { tomoyo_set_group(head, "network unix "); tomoyo_set_string(head, tomoyo_proto_keyword [ptr->protocol]); tomoyo_set_space(head); first = false; } else { tomoyo_set_slash(head); } tomoyo_set_string(head, tomoyo_socket_keyword[bit]); } if (first) return true; tomoyo_print_name_union(head, &ptr->name); |
5db5a39b6 TOMOYO: Use commo... |
1501 1502 1503 |
} else if (acl_type == TOMOYO_TYPE_MOUNT_ACL) { struct tomoyo_mount_acl *ptr = container_of(acl, typeof(*ptr), head); |
0d2171d71 TOMOYO: Rename di... |
1504 |
tomoyo_set_group(head, "file mount"); |
f23571e86 TOMOYO: Copy dire... |
1505 1506 1507 1508 |
tomoyo_print_name_union(head, &ptr->dev_name); tomoyo_print_name_union(head, &ptr->dir_name); tomoyo_print_name_union(head, &ptr->fs_type); tomoyo_print_number_union(head, &ptr->flags); |
d58e0da85 TOMOYO: Add envir... |
1509 1510 1511 1512 1513 1514 |
} else if (acl_type == TOMOYO_TYPE_ENV_ACL) { struct tomoyo_env_acl *ptr = container_of(acl, typeof(*ptr), head); tomoyo_set_group(head, "misc env "); tomoyo_set_string(head, ptr->env->name); |
a1f9bb6a3 TOMOYO: Split fil... |
1515 |
} |
2066a3612 TOMOYO: Allow usi... |
1516 1517 1518 1519 1520 1521 1522 1523 1524 1525 1526 1527 |
if (acl->cond) { head->r.print_cond_part = true; head->r.cond_step = 0; if (!tomoyo_flush(head)) return false; print_cond_part: if (!tomoyo_print_condition(head, acl->cond)) return false; head->r.print_cond_part = false; } else { tomoyo_set_lf(head); } |
f23571e86 TOMOYO: Copy dire... |
1528 1529 1530 1531 1532 1533 |
return true; } /** * tomoyo_read_domain2 - Read domain policy. * |
32997144f TOMOYO: Add ACL g... |
1534 1535 |
* @head: Pointer to "struct tomoyo_io_buffer". * @list: Pointer to "struct list_head". |
f23571e86 TOMOYO: Copy dire... |
1536 1537 1538 1539 1540 1541 |
* * Caller holds tomoyo_read_lock(). * * Returns true on success, false otherwise. */ static bool tomoyo_read_domain2(struct tomoyo_io_buffer *head, |
32997144f TOMOYO: Add ACL g... |
1542 |
struct list_head *list) |
f23571e86 TOMOYO: Copy dire... |
1543 |
{ |
32997144f TOMOYO: Add ACL g... |
1544 |
list_for_each_cookie(head->r.acl, list) { |
f23571e86 TOMOYO: Copy dire... |
1545 1546 1547 1548 1549 1550 |
struct tomoyo_acl_info *ptr = list_entry(head->r.acl, typeof(*ptr), list); if (!tomoyo_print_entry(head, ptr)) return false; } head->r.acl = NULL; |
a1f9bb6a3 TOMOYO: Split fil... |
1551 |
return true; |
a1f9bb6a3 TOMOYO: Split fil... |
1552 1553 1554 |
} /** |
e2bf69077 TOMOYO: Rename sy... |
1555 |
* tomoyo_read_domain - Read domain policy. |
9590837b8 Common functions ... |
1556 1557 1558 |
* * @head: Pointer to "struct tomoyo_io_buffer". * |
fdb8ebb72 TOMOYO: Use RCU p... |
1559 |
* Caller holds tomoyo_read_lock(). |
9590837b8 Common functions ... |
1560 |
*/ |
e2bf69077 TOMOYO: Rename sy... |
1561 |
static void tomoyo_read_domain(struct tomoyo_io_buffer *head) |
9590837b8 Common functions ... |
1562 |
{ |
f23571e86 TOMOYO: Copy dire... |
1563 |
if (head->r.eof) |
8fbe71f0e TOMOYO: Make read... |
1564 |
return; |
f23571e86 TOMOYO: Copy dire... |
1565 |
list_for_each_cookie(head->r.domain, &tomoyo_domain_list) { |
475e6fa3d TOMOYO: Change li... |
1566 |
struct tomoyo_domain_info *domain = |
f23571e86 TOMOYO: Copy dire... |
1567 1568 |
list_entry(head->r.domain, typeof(*domain), list); switch (head->r.step) { |
2c47ab935 TOMOYO: Cleanup p... |
1569 |
u8 i; |
f23571e86 TOMOYO: Copy dire... |
1570 1571 1572 1573 1574 1575 1576 |
case 0: if (domain->is_deleted && !head->r.print_this_domain_only) continue; /* Print domainname and flags. */ tomoyo_set_string(head, domain->domainname->name); tomoyo_set_lf(head); |
b5bc60b4c TOMOYO: Cleanup p... |
1577 1578 |
tomoyo_io_printf(head, "use_profile %u ", |
f23571e86 TOMOYO: Copy dire... |
1579 |
domain->profile); |
32997144f TOMOYO: Add ACL g... |
1580 1581 1582 |
tomoyo_io_printf(head, "use_group %u ", domain->group); |
2c47ab935 TOMOYO: Cleanup p... |
1583 1584 1585 |
for (i = 0; i < TOMOYO_MAX_DOMAIN_INFO_FLAGS; i++) if (domain->flags[i]) tomoyo_set_string(head, tomoyo_dif[i]); |
f23571e86 TOMOYO: Copy dire... |
1586 1587 1588 1589 |
head->r.step++; tomoyo_set_lf(head); /* fall through */ case 1: |
32997144f TOMOYO: Add ACL g... |
1590 |
if (!tomoyo_read_domain2(head, &domain->acl_info_list)) |
f23571e86 TOMOYO: Copy dire... |
1591 1592 1593 1594 1595 1596 1597 1598 1599 |
return; head->r.step++; if (!tomoyo_set_lf(head)) return; /* fall through */ case 2: head->r.step = 0; if (head->r.print_this_domain_only) goto done; |
9590837b8 Common functions ... |
1600 |
} |
9590837b8 Common functions ... |
1601 |
} |
f23571e86 TOMOYO: Copy dire... |
1602 1603 |
done: head->r.eof = true; |
9590837b8 Common functions ... |
1604 1605 1606 |
} /** |
9590837b8 Common functions ... |
1607 1608 1609 1610 1611 1612 1613 1614 |
* tomoyo_write_pid: Specify PID to obtain domainname. * * @head: Pointer to "struct tomoyo_io_buffer". * * Returns 0. */ static int tomoyo_write_pid(struct tomoyo_io_buffer *head) { |
f23571e86 TOMOYO: Copy dire... |
1615 |
head->r.eof = false; |
9590837b8 Common functions ... |
1616 1617 1618 1619 1620 1621 1622 1623 1624 1625 1626 1627 1628 |
return 0; } /** * tomoyo_read_pid - Get domainname of the specified PID. * * @head: Pointer to "struct tomoyo_io_buffer". * * Returns the domainname which the specified PID is in on success, * empty string otherwise. * The PID is specified by tomoyo_write_pid() so that the user can obtain * using read()/write() interface rather than sysctl() interface. */ |
8fbe71f0e TOMOYO: Make read... |
1629 |
static void tomoyo_read_pid(struct tomoyo_io_buffer *head) |
9590837b8 Common functions ... |
1630 |
{ |
f23571e86 TOMOYO: Copy dire... |
1631 1632 1633 1634 1635 1636 1637 1638 1639 1640 |
char *buf = head->write_buf; bool global_pid = false; unsigned int pid; struct task_struct *p; struct tomoyo_domain_info *domain = NULL; /* Accessing write_buf is safe because head->io_sem is held. */ if (!buf) { head->r.eof = true; return; /* Do nothing if open(O_RDONLY). */ |
9590837b8 Common functions ... |
1641 |
} |
f23571e86 TOMOYO: Copy dire... |
1642 1643 1644 1645 1646 1647 1648 |
if (head->r.w_pos || head->r.eof) return; head->r.eof = true; if (tomoyo_str_starts(&buf, "global-pid ")) global_pid = true; pid = (unsigned int) simple_strtoul(buf, NULL, 10); rcu_read_lock(); |
f23571e86 TOMOYO: Copy dire... |
1649 1650 1651 1652 1653 1654 |
if (global_pid) p = find_task_by_pid_ns(pid, &init_pid_ns); else p = find_task_by_vpid(pid); if (p) domain = tomoyo_real_domain(p); |
f23571e86 TOMOYO: Copy dire... |
1655 1656 1657 1658 1659 |
rcu_read_unlock(); if (!domain) return; tomoyo_io_printf(head, "%u %u ", pid, domain->profile); tomoyo_set_string(head, domain->domainname->name); |
9590837b8 Common functions ... |
1660 |
} |
0f2a55d5b TOMOYO: Update ke... |
1661 |
/* String table for domain transition control keywords. */ |
5448ec4f5 TOMOYO: Use commo... |
1662 |
static const char *tomoyo_transition_type[TOMOYO_MAX_TRANSITION_TYPE] = { |
bd03a3e4c TOMOYO: Add polic... |
1663 1664 1665 1666 1667 1668 |
[TOMOYO_TRANSITION_CONTROL_NO_RESET] = "no_reset_domain ", [TOMOYO_TRANSITION_CONTROL_RESET] = "reset_domain ", [TOMOYO_TRANSITION_CONTROL_NO_INITIALIZE] = "no_initialize_domain ", [TOMOYO_TRANSITION_CONTROL_INITIALIZE] = "initialize_domain ", [TOMOYO_TRANSITION_CONTROL_NO_KEEP] = "no_keep_domain ", [TOMOYO_TRANSITION_CONTROL_KEEP] = "keep_domain ", |
5448ec4f5 TOMOYO: Use commo... |
1669 |
}; |
0f2a55d5b TOMOYO: Update ke... |
1670 |
/* String table for grouping keywords. */ |
e2bf69077 TOMOYO: Rename sy... |
1671 |
static const char *tomoyo_group_name[TOMOYO_MAX_GROUP] = { |
059d84dbb TOMOYO: Add socke... |
1672 1673 1674 |
[TOMOYO_PATH_GROUP] = "path_group ", [TOMOYO_NUMBER_GROUP] = "number_group ", [TOMOYO_ADDRESS_GROUP] = "address_group ", |
e2bf69077 TOMOYO: Rename sy... |
1675 |
}; |
9590837b8 Common functions ... |
1676 |
/** |
e2bf69077 TOMOYO: Rename sy... |
1677 |
* tomoyo_write_exception - Write exception policy. |
9590837b8 Common functions ... |
1678 1679 1680 1681 |
* * @head: Pointer to "struct tomoyo_io_buffer". * * Returns 0 on success, negative value otherwise. |
fdb8ebb72 TOMOYO: Use RCU p... |
1682 1683 |
* * Caller holds tomoyo_read_lock(). |
9590837b8 Common functions ... |
1684 |
*/ |
e2bf69077 TOMOYO: Rename sy... |
1685 |
static int tomoyo_write_exception(struct tomoyo_io_buffer *head) |
9590837b8 Common functions ... |
1686 |
{ |
bd03a3e4c TOMOYO: Add polic... |
1687 |
const bool is_delete = head->w.is_delete; |
a238cf5b8 TOMOYO: Use struc... |
1688 |
struct tomoyo_acl_param param = { |
bd03a3e4c TOMOYO: Add polic... |
1689 1690 |
.ns = head->w.ns, .is_delete = is_delete, |
a238cf5b8 TOMOYO: Use struc... |
1691 |
.data = head->write_buf, |
e2bf69077 TOMOYO: Rename sy... |
1692 |
}; |
a238cf5b8 TOMOYO: Use struc... |
1693 |
u8 i; |
a238cf5b8 TOMOYO: Use struc... |
1694 1695 |
if (tomoyo_str_starts(¶m.data, "aggregator ")) return tomoyo_write_aggregator(¶m); |
e2bf69077 TOMOYO: Rename sy... |
1696 |
for (i = 0; i < TOMOYO_MAX_TRANSITION_TYPE; i++) |
a238cf5b8 TOMOYO: Use struc... |
1697 1698 |
if (tomoyo_str_starts(¶m.data, tomoyo_transition_type[i])) return tomoyo_write_transition_control(¶m, i); |
e2bf69077 TOMOYO: Rename sy... |
1699 |
for (i = 0; i < TOMOYO_MAX_GROUP; i++) |
a238cf5b8 TOMOYO: Use struc... |
1700 1701 |
if (tomoyo_str_starts(¶m.data, tomoyo_group_name[i])) return tomoyo_write_group(¶m, i); |
32997144f TOMOYO: Add ACL g... |
1702 1703 1704 1705 1706 |
if (tomoyo_str_starts(¶m.data, "acl_group ")) { unsigned int group; char *data; group = simple_strtoul(param.data, &data, 10); if (group < TOMOYO_MAX_ACL_GROUPS && *data++ == ' ') |
bd03a3e4c TOMOYO: Add polic... |
1707 1708 1709 |
return tomoyo_write_domain2 (head->w.ns, &head->w.ns->acl_group[group], data, is_delete); |
32997144f TOMOYO: Add ACL g... |
1710 |
} |
9590837b8 Common functions ... |
1711 1712 1713 1714 |
return -EINVAL; } /** |
059d84dbb TOMOYO: Add socke... |
1715 |
* tomoyo_read_group - Read "struct tomoyo_path_group"/"struct tomoyo_number_group"/"struct tomoyo_address_group" list. |
9590837b8 Common functions ... |
1716 1717 |
* * @head: Pointer to "struct tomoyo_io_buffer". |
31845e8c6 TOMOYO: Aggregate... |
1718 1719 1720 |
* @idx: Index number. * * Returns true on success, false otherwise. |
9590837b8 Common functions ... |
1721 |
* |
fdb8ebb72 TOMOYO: Use RCU p... |
1722 |
* Caller holds tomoyo_read_lock(). |
9590837b8 Common functions ... |
1723 |
*/ |
31845e8c6 TOMOYO: Aggregate... |
1724 |
static bool tomoyo_read_group(struct tomoyo_io_buffer *head, const int idx) |
9590837b8 Common functions ... |
1725 |
{ |
bd03a3e4c TOMOYO: Add polic... |
1726 1727 1728 1729 |
struct tomoyo_policy_namespace *ns = container_of(head->r.ns, typeof(*ns), namespace_list); struct list_head *list = &ns->group_list[idx]; list_for_each_cookie(head->r.group, list) { |
31845e8c6 TOMOYO: Aggregate... |
1730 |
struct tomoyo_group *group = |
0df7e8b8f TOMOYO: Cleanup p... |
1731 |
list_entry(head->r.group, typeof(*group), head.list); |
f23571e86 TOMOYO: Copy dire... |
1732 |
list_for_each_cookie(head->r.acl, &group->member_list) { |
31845e8c6 TOMOYO: Aggregate... |
1733 |
struct tomoyo_acl_head *ptr = |
f23571e86 TOMOYO: Copy dire... |
1734 |
list_entry(head->r.acl, typeof(*ptr), list); |
31845e8c6 TOMOYO: Aggregate... |
1735 1736 |
if (ptr->is_deleted) continue; |
f23571e86 TOMOYO: Copy dire... |
1737 1738 |
if (!tomoyo_flush(head)) return false; |
bd03a3e4c TOMOYO: Add polic... |
1739 |
tomoyo_print_namespace(head); |
f23571e86 TOMOYO: Copy dire... |
1740 1741 |
tomoyo_set_string(head, tomoyo_group_name[idx]); tomoyo_set_string(head, group->group_name->name); |
31845e8c6 TOMOYO: Aggregate... |
1742 |
if (idx == TOMOYO_PATH_GROUP) { |
f23571e86 TOMOYO: Copy dire... |
1743 1744 1745 1746 |
tomoyo_set_space(head); tomoyo_set_string(head, container_of (ptr, struct tomoyo_path_group, head)->member_name->name); |
31845e8c6 TOMOYO: Aggregate... |
1747 |
} else if (idx == TOMOYO_NUMBER_GROUP) { |
f23571e86 TOMOYO: Copy dire... |
1748 1749 1750 1751 |
tomoyo_print_number_union(head, &container_of (ptr, struct tomoyo_number_group, head)->number); |
059d84dbb TOMOYO: Add socke... |
1752 1753 1754 1755 1756 1757 1758 1759 1760 |
} else if (idx == TOMOYO_ADDRESS_GROUP) { char buffer[128]; struct tomoyo_address_group *member = container_of(ptr, typeof(*member), head); tomoyo_print_ip(buffer, sizeof(buffer), &member->address); tomoyo_io_printf(head, " %s", buffer); |
31845e8c6 TOMOYO: Aggregate... |
1761 |
} |
f23571e86 TOMOYO: Copy dire... |
1762 |
tomoyo_set_lf(head); |
31845e8c6 TOMOYO: Aggregate... |
1763 |
} |
f23571e86 TOMOYO: Copy dire... |
1764 |
head->r.acl = NULL; |
31845e8c6 TOMOYO: Aggregate... |
1765 |
} |
f23571e86 TOMOYO: Copy dire... |
1766 |
head->r.group = NULL; |
31845e8c6 TOMOYO: Aggregate... |
1767 1768 1769 1770 1771 1772 1773 1774 1775 1776 1777 1778 1779 1780 1781 |
return true; } /** * tomoyo_read_policy - Read "struct tomoyo_..._entry" list. * * @head: Pointer to "struct tomoyo_io_buffer". * @idx: Index number. * * Returns true on success, false otherwise. * * Caller holds tomoyo_read_lock(). */ static bool tomoyo_read_policy(struct tomoyo_io_buffer *head, const int idx) { |
bd03a3e4c TOMOYO: Add polic... |
1782 1783 1784 1785 |
struct tomoyo_policy_namespace *ns = container_of(head->r.ns, typeof(*ns), namespace_list); struct list_head *list = &ns->policy_list[idx]; list_for_each_cookie(head->r.acl, list) { |
475e6fa3d TOMOYO: Change li... |
1786 |
struct tomoyo_acl_head *acl = |
f23571e86 TOMOYO: Copy dire... |
1787 |
container_of(head->r.acl, typeof(*acl), list); |
31845e8c6 TOMOYO: Aggregate... |
1788 1789 |
if (acl->is_deleted) continue; |
f23571e86 TOMOYO: Copy dire... |
1790 1791 |
if (!tomoyo_flush(head)) return false; |
31845e8c6 TOMOYO: Aggregate... |
1792 |
switch (idx) { |
5448ec4f5 TOMOYO: Use commo... |
1793 |
case TOMOYO_ID_TRANSITION_CONTROL: |
31845e8c6 TOMOYO: Aggregate... |
1794 |
{ |
5448ec4f5 TOMOYO: Use commo... |
1795 |
struct tomoyo_transition_control *ptr = |
31845e8c6 TOMOYO: Aggregate... |
1796 |
container_of(acl, typeof(*ptr), head); |
bd03a3e4c TOMOYO: Add polic... |
1797 |
tomoyo_print_namespace(head); |
0d2171d71 TOMOYO: Rename di... |
1798 |
tomoyo_set_string(head, tomoyo_transition_type |
f23571e86 TOMOYO: Copy dire... |
1799 |
[ptr->type]); |
0d2171d71 TOMOYO: Rename di... |
1800 1801 1802 1803 1804 1805 |
tomoyo_set_string(head, ptr->program ? ptr->program->name : "any"); tomoyo_set_string(head, " from "); tomoyo_set_string(head, ptr->domainname ? ptr->domainname->name : "any"); |
31845e8c6 TOMOYO: Aggregate... |
1806 1807 |
} break; |
31845e8c6 TOMOYO: Aggregate... |
1808 1809 |
case TOMOYO_ID_AGGREGATOR: { |
e2bf69077 TOMOYO: Rename sy... |
1810 |
struct tomoyo_aggregator *ptr = |
31845e8c6 TOMOYO: Aggregate... |
1811 |
container_of(acl, typeof(*ptr), head); |
bd03a3e4c TOMOYO: Add polic... |
1812 |
tomoyo_print_namespace(head); |
b5bc60b4c TOMOYO: Cleanup p... |
1813 |
tomoyo_set_string(head, "aggregator "); |
f23571e86 TOMOYO: Copy dire... |
1814 1815 1816 1817 1818 |
tomoyo_set_string(head, ptr->original_name->name); tomoyo_set_space(head); tomoyo_set_string(head, ptr->aggregated_name->name); |
31845e8c6 TOMOYO: Aggregate... |
1819 1820 |
} break; |
31845e8c6 TOMOYO: Aggregate... |
1821 1822 |
default: continue; |
9590837b8 Common functions ... |
1823 |
} |
f23571e86 TOMOYO: Copy dire... |
1824 |
tomoyo_set_lf(head); |
9590837b8 Common functions ... |
1825 |
} |
f23571e86 TOMOYO: Copy dire... |
1826 |
head->r.acl = NULL; |
31845e8c6 TOMOYO: Aggregate... |
1827 1828 1829 1830 |
return true; } /** |
e2bf69077 TOMOYO: Rename sy... |
1831 |
* tomoyo_read_exception - Read exception policy. |
31845e8c6 TOMOYO: Aggregate... |
1832 1833 1834 1835 1836 |
* * @head: Pointer to "struct tomoyo_io_buffer". * * Caller holds tomoyo_read_lock(). */ |
e2bf69077 TOMOYO: Rename sy... |
1837 |
static void tomoyo_read_exception(struct tomoyo_io_buffer *head) |
31845e8c6 TOMOYO: Aggregate... |
1838 |
{ |
bd03a3e4c TOMOYO: Add polic... |
1839 1840 |
struct tomoyo_policy_namespace *ns = container_of(head->r.ns, typeof(*ns), namespace_list); |
f23571e86 TOMOYO: Copy dire... |
1841 |
if (head->r.eof) |
31845e8c6 TOMOYO: Aggregate... |
1842 |
return; |
f23571e86 TOMOYO: Copy dire... |
1843 1844 1845 1846 |
while (head->r.step < TOMOYO_MAX_POLICY && tomoyo_read_policy(head, head->r.step)) head->r.step++; if (head->r.step < TOMOYO_MAX_POLICY) |
31845e8c6 TOMOYO: Aggregate... |
1847 |
return; |
f23571e86 TOMOYO: Copy dire... |
1848 1849 1850 1851 |
while (head->r.step < TOMOYO_MAX_POLICY + TOMOYO_MAX_GROUP && tomoyo_read_group(head, head->r.step - TOMOYO_MAX_POLICY)) head->r.step++; if (head->r.step < TOMOYO_MAX_POLICY + TOMOYO_MAX_GROUP) |
31845e8c6 TOMOYO: Aggregate... |
1852 |
return; |
32997144f TOMOYO: Add ACL g... |
1853 1854 1855 1856 |
while (head->r.step < TOMOYO_MAX_POLICY + TOMOYO_MAX_GROUP + TOMOYO_MAX_ACL_GROUPS) { head->r.acl_group_index = head->r.step - TOMOYO_MAX_POLICY - TOMOYO_MAX_GROUP; |
bd03a3e4c TOMOYO: Add polic... |
1857 |
if (!tomoyo_read_domain2(head, &ns->acl_group |
32997144f TOMOYO: Add ACL g... |
1858 1859 1860 1861 |
[head->r.acl_group_index])) return; head->r.step++; } |
f23571e86 TOMOYO: Copy dire... |
1862 |
head->r.eof = true; |
9590837b8 Common functions ... |
1863 |
} |
eadd99cc8 TOMOYO: Add audit... |
1864 |
/* Wait queue for kernel -> userspace notification. */ |
17fcfbd9d TOMOYO: Add inter... |
1865 |
static DECLARE_WAIT_QUEUE_HEAD(tomoyo_query_wait); |
eadd99cc8 TOMOYO: Add audit... |
1866 1867 |
/* Wait queue for userspace -> kernel notification. */ static DECLARE_WAIT_QUEUE_HEAD(tomoyo_answer_wait); |
17fcfbd9d TOMOYO: Add inter... |
1868 1869 |
/* Structure for query. */ |
e2bf69077 TOMOYO: Rename sy... |
1870 |
struct tomoyo_query { |
17fcfbd9d TOMOYO: Add inter... |
1871 |
struct list_head list; |
59df3166e TOMOYO: Fix inter... |
1872 |
struct tomoyo_domain_info *domain; |
17fcfbd9d TOMOYO: Add inter... |
1873 |
char *query; |
eadd99cc8 TOMOYO: Add audit... |
1874 |
size_t query_len; |
17fcfbd9d TOMOYO: Add inter... |
1875 |
unsigned int serial; |
eadd99cc8 TOMOYO: Add audit... |
1876 1877 1878 |
u8 timer; u8 answer; u8 retry; |
17fcfbd9d TOMOYO: Add inter... |
1879 |
}; |
e2bf69077 TOMOYO: Rename sy... |
1880 |
/* The list for "struct tomoyo_query". */ |
17fcfbd9d TOMOYO: Add inter... |
1881 |
static LIST_HEAD(tomoyo_query_list); |
eadd99cc8 TOMOYO: Add audit... |
1882 1883 |
/* Lock for manipulating tomoyo_query_list. */ static DEFINE_SPINLOCK(tomoyo_query_list_lock); |
17fcfbd9d TOMOYO: Add inter... |
1884 1885 1886 1887 1888 1889 1890 |
/* * Number of "struct file" referring /sys/kernel/security/tomoyo/query * interface. */ static atomic_t tomoyo_query_observers = ATOMIC_INIT(0); /** |
2ca9bf453 TOMOYO: Allow usi... |
1891 1892 1893 1894 1895 1896 1897 1898 1899 1900 1901 1902 1903 1904 1905 1906 |
* tomoyo_truncate - Truncate a line. * * @str: String to truncate. * * Returns length of truncated @str. */ static int tomoyo_truncate(char *str) { char *start = str; while (*(unsigned char *) str > (unsigned char) ' ') str++; *str = '\0'; return strlen(start) + 1; } /** |
eadd99cc8 TOMOYO: Add audit... |
1907 1908 1909 1910 1911 1912 1913 1914 1915 1916 |
* tomoyo_add_entry - Add an ACL to current thread's domain. Used by learning mode. * * @domain: Pointer to "struct tomoyo_domain_info". * @header: Lines containing ACL. * * Returns nothing. */ static void tomoyo_add_entry(struct tomoyo_domain_info *domain, char *header) { char *buffer; |
2ca9bf453 TOMOYO: Allow usi... |
1917 |
char *realpath = NULL; |
5b636857f TOMOYO: Allow usi... |
1918 |
char *argv0 = NULL; |
2ca9bf453 TOMOYO: Allow usi... |
1919 |
char *symlink = NULL; |
eadd99cc8 TOMOYO: Add audit... |
1920 1921 1922 1923 1924 1925 1926 1927 1928 1929 1930 |
char *cp = strchr(header, ' '); int len; if (!cp) return; cp = strchr(cp + 1, ' '); if (!cp) return; *cp++ = '\0'; len = strlen(cp) + 1; |
2ca9bf453 TOMOYO: Allow usi... |
1931 1932 |
/* strstr() will return NULL if ordering is wrong. */ if (*cp == 'f') { |
5b636857f TOMOYO: Allow usi... |
1933 1934 1935 1936 1937 |
argv0 = strstr(header, " argv[]={ \""); if (argv0) { argv0 += 10; len += tomoyo_truncate(argv0) + 14; } |
2ca9bf453 TOMOYO: Allow usi... |
1938 1939 1940 1941 1942 1943 1944 1945 1946 |
realpath = strstr(header, " exec={ realpath=\""); if (realpath) { realpath += 8; len += tomoyo_truncate(realpath) + 6; } symlink = strstr(header, " symlink.target=\""); if (symlink) len += tomoyo_truncate(symlink + 1) + 1; } |
eadd99cc8 TOMOYO: Add audit... |
1947 1948 1949 1950 |
buffer = kmalloc(len, GFP_NOFS); if (!buffer) return; snprintf(buffer, len - 1, "%s", cp); |
2ca9bf453 TOMOYO: Allow usi... |
1951 1952 |
if (realpath) tomoyo_addprintf(buffer, len, " exec.%s", realpath); |
5b636857f TOMOYO: Allow usi... |
1953 1954 |
if (argv0) tomoyo_addprintf(buffer, len, " exec.argv[0]=%s", argv0); |
2ca9bf453 TOMOYO: Allow usi... |
1955 1956 |
if (symlink) tomoyo_addprintf(buffer, len, "%s", symlink); |
eadd99cc8 TOMOYO: Add audit... |
1957 |
tomoyo_normalize_line(buffer); |
b22b8b9fd TOMOYO: Rename me... |
1958 1959 1960 |
if (!tomoyo_write_domain2(domain->ns, &domain->acl_info_list, buffer, false)) tomoyo_update_stat(TOMOYO_STAT_POLICY_UPDATES); |
eadd99cc8 TOMOYO: Add audit... |
1961 1962 1963 1964 |
kfree(buffer); } /** |
17fcfbd9d TOMOYO: Add inter... |
1965 1966 |
* tomoyo_supervisor - Ask for the supervisor's decision. * |
eadd99cc8 TOMOYO: Add audit... |
1967 1968 |
* @r: Pointer to "struct tomoyo_request_info". * @fmt: The printf()'s format string, followed by parameters. |
17fcfbd9d TOMOYO: Add inter... |
1969 1970 1971 1972 1973 1974 1975 1976 1977 |
* * Returns 0 if the supervisor decided to permit the access request which * violated the policy in enforcing mode, TOMOYO_RETRY_REQUEST if the * supervisor decided to retry the access request which violated the policy in * enforcing mode, 0 if it is not in enforcing mode, -EPERM otherwise. */ int tomoyo_supervisor(struct tomoyo_request_info *r, const char *fmt, ...) { va_list args; |
eadd99cc8 TOMOYO: Add audit... |
1978 |
int error; |
17fcfbd9d TOMOYO: Add inter... |
1979 1980 |
int len; static unsigned int tomoyo_serial; |
eadd99cc8 TOMOYO: Add audit... |
1981 |
struct tomoyo_query entry = { }; |
17fcfbd9d TOMOYO: Add inter... |
1982 |
bool quota_exceeded = false; |
eadd99cc8 TOMOYO: Add audit... |
1983 1984 1985 1986 1987 1988 1989 1990 1991 1992 |
va_start(args, fmt); len = vsnprintf((char *) &len, 1, fmt, args) + 1; va_end(args); /* Write /sys/kernel/security/tomoyo/audit. */ va_start(args, fmt); tomoyo_write_log2(r, len, fmt, args); va_end(args); /* Nothing more to do if granted. */ if (r->granted) return 0; |
b22b8b9fd TOMOYO: Rename me... |
1993 1994 |
if (r->mode) tomoyo_update_stat(r->mode); |
17fcfbd9d TOMOYO: Add inter... |
1995 |
switch (r->mode) { |
eadd99cc8 TOMOYO: Add audit... |
1996 1997 1998 1999 2000 |
case TOMOYO_CONFIG_ENFORCING: error = -EPERM; if (atomic_read(&tomoyo_query_observers)) break; goto out; |
17fcfbd9d TOMOYO: Add inter... |
2001 |
case TOMOYO_CONFIG_LEARNING: |
eadd99cc8 TOMOYO: Add audit... |
2002 2003 2004 2005 |
error = 0; /* Check max_learning_entry parameter. */ if (tomoyo_domain_quota_is_ok(r)) break; |
17fcfbd9d TOMOYO: Add inter... |
2006 |
/* fall through */ |
eadd99cc8 TOMOYO: Add audit... |
2007 |
default: |
17fcfbd9d TOMOYO: Add inter... |
2008 2009 |
return 0; } |
eadd99cc8 TOMOYO: Add audit... |
2010 |
/* Get message. */ |
17fcfbd9d TOMOYO: Add inter... |
2011 |
va_start(args, fmt); |
eadd99cc8 TOMOYO: Add audit... |
2012 |
entry.query = tomoyo_init_log(r, len, fmt, args); |
17fcfbd9d TOMOYO: Add inter... |
2013 |
va_end(args); |
eadd99cc8 TOMOYO: Add audit... |
2014 |
if (!entry.query) |
17fcfbd9d TOMOYO: Add inter... |
2015 |
goto out; |
eadd99cc8 TOMOYO: Add audit... |
2016 2017 2018 |
entry.query_len = strlen(entry.query) + 1; if (!error) { tomoyo_add_entry(r->domain, entry.query); |
17fcfbd9d TOMOYO: Add inter... |
2019 |
goto out; |
eadd99cc8 TOMOYO: Add audit... |
2020 2021 |
} len = tomoyo_round2(entry.query_len); |
59df3166e TOMOYO: Fix inter... |
2022 |
entry.domain = r->domain; |
17fcfbd9d TOMOYO: Add inter... |
2023 |
spin_lock(&tomoyo_query_list_lock); |
eadd99cc8 TOMOYO: Add audit... |
2024 2025 2026 |
if (tomoyo_memory_quota[TOMOYO_MEMORY_QUERY] && tomoyo_memory_used[TOMOYO_MEMORY_QUERY] + len >= tomoyo_memory_quota[TOMOYO_MEMORY_QUERY]) { |
17fcfbd9d TOMOYO: Add inter... |
2027 2028 |
quota_exceeded = true; } else { |
eadd99cc8 TOMOYO: Add audit... |
2029 2030 2031 2032 |
entry.serial = tomoyo_serial++; entry.retry = r->retry; tomoyo_memory_used[TOMOYO_MEMORY_QUERY] += len; list_add_tail(&entry.list, &tomoyo_query_list); |
17fcfbd9d TOMOYO: Add inter... |
2033 2034 2035 2036 |
} spin_unlock(&tomoyo_query_list_lock); if (quota_exceeded) goto out; |
17fcfbd9d TOMOYO: Add inter... |
2037 |
/* Give 10 seconds for supervisor's opinion. */ |
eadd99cc8 TOMOYO: Add audit... |
2038 2039 2040 2041 2042 |
while (entry.timer < 10) { wake_up_all(&tomoyo_query_wait); if (wait_event_interruptible_timeout (tomoyo_answer_wait, entry.answer || !atomic_read(&tomoyo_query_observers), HZ)) |
17fcfbd9d TOMOYO: Add inter... |
2043 |
break; |
eadd99cc8 TOMOYO: Add audit... |
2044 2045 |
else entry.timer++; |
17fcfbd9d TOMOYO: Add inter... |
2046 2047 |
} spin_lock(&tomoyo_query_list_lock); |
eadd99cc8 TOMOYO: Add audit... |
2048 2049 |
list_del(&entry.list); tomoyo_memory_used[TOMOYO_MEMORY_QUERY] -= len; |
17fcfbd9d TOMOYO: Add inter... |
2050 |
spin_unlock(&tomoyo_query_list_lock); |
eadd99cc8 TOMOYO: Add audit... |
2051 |
switch (entry.answer) { |
17fcfbd9d TOMOYO: Add inter... |
2052 2053 2054 2055 2056 2057 2058 2059 |
case 3: /* Asked to retry by administrator. */ error = TOMOYO_RETRY_REQUEST; r->retry++; break; case 1: /* Granted by administrator. */ error = 0; break; |
17fcfbd9d TOMOYO: Add inter... |
2060 |
default: |
eadd99cc8 TOMOYO: Add audit... |
2061 |
/* Timed out or rejected by administrator. */ |
17fcfbd9d TOMOYO: Add inter... |
2062 2063 |
break; } |
eadd99cc8 TOMOYO: Add audit... |
2064 2065 |
out: kfree(entry.query); |
17fcfbd9d TOMOYO: Add inter... |
2066 2067 2068 2069 |
return error; } /** |
59df3166e TOMOYO: Fix inter... |
2070 2071 2072 2073 2074 2075 2076 2077 2078 2079 2080 2081 2082 |
* tomoyo_find_domain_by_qid - Get domain by query id. * * @serial: Query ID assigned by tomoyo_supervisor(). * * Returns pointer to "struct tomoyo_domain_info" if found, NULL otherwise. */ static struct tomoyo_domain_info *tomoyo_find_domain_by_qid (unsigned int serial) { struct tomoyo_query *ptr; struct tomoyo_domain_info *domain = NULL; spin_lock(&tomoyo_query_list_lock); list_for_each_entry(ptr, &tomoyo_query_list, list) { |
6041e8346 TOMOYO: Return ap... |
2083 |
if (ptr->serial != serial) |
59df3166e TOMOYO: Fix inter... |
2084 2085 2086 2087 2088 2089 2090 2091 2092 |
continue; domain = ptr->domain; break; } spin_unlock(&tomoyo_query_list_lock); return domain; } /** |
17fcfbd9d TOMOYO: Add inter... |
2093 2094 2095 2096 2097 2098 2099 2100 2101 |
* tomoyo_poll_query - poll() for /sys/kernel/security/tomoyo/query. * * @file: Pointer to "struct file". * @wait: Pointer to "poll_table". * * Returns POLLIN | POLLRDNORM when ready to read, 0 otherwise. * * Waits for access requests which violated policy in enforcing mode. */ |
6041e8346 TOMOYO: Return ap... |
2102 |
static unsigned int tomoyo_poll_query(struct file *file, poll_table *wait) |
17fcfbd9d TOMOYO: Add inter... |
2103 |
{ |
6041e8346 TOMOYO: Return ap... |
2104 2105 2106 2107 2108 |
if (!list_empty(&tomoyo_query_list)) return POLLIN | POLLRDNORM; poll_wait(file, &tomoyo_query_wait, wait); if (!list_empty(&tomoyo_query_list)) return POLLIN | POLLRDNORM; |
17fcfbd9d TOMOYO: Add inter... |
2109 2110 2111 2112 2113 2114 2115 |
return 0; } /** * tomoyo_read_query - Read access requests which violated policy in enforcing mode. * * @head: Pointer to "struct tomoyo_io_buffer". |
17fcfbd9d TOMOYO: Add inter... |
2116 |
*/ |
8fbe71f0e TOMOYO: Make read... |
2117 |
static void tomoyo_read_query(struct tomoyo_io_buffer *head) |
17fcfbd9d TOMOYO: Add inter... |
2118 2119 |
{ struct list_head *tmp; |
2c47ab935 TOMOYO: Cleanup p... |
2120 2121 |
unsigned int pos = 0; size_t len = 0; |
17fcfbd9d TOMOYO: Add inter... |
2122 |
char *buf; |
f23571e86 TOMOYO: Copy dire... |
2123 |
if (head->r.w_pos) |
8fbe71f0e TOMOYO: Make read... |
2124 |
return; |
17fcfbd9d TOMOYO: Add inter... |
2125 2126 2127 |
if (head->read_buf) { kfree(head->read_buf); head->read_buf = NULL; |
17fcfbd9d TOMOYO: Add inter... |
2128 2129 2130 |
} spin_lock(&tomoyo_query_list_lock); list_for_each(tmp, &tomoyo_query_list) { |
e2bf69077 TOMOYO: Rename sy... |
2131 |
struct tomoyo_query *ptr = list_entry(tmp, typeof(*ptr), list); |
f23571e86 TOMOYO: Copy dire... |
2132 |
if (pos++ != head->r.query_index) |
17fcfbd9d TOMOYO: Add inter... |
2133 2134 2135 2136 2137 2138 |
continue; len = ptr->query_len; break; } spin_unlock(&tomoyo_query_list_lock); if (!len) { |
f23571e86 TOMOYO: Copy dire... |
2139 |
head->r.query_index = 0; |
8fbe71f0e TOMOYO: Make read... |
2140 |
return; |
17fcfbd9d TOMOYO: Add inter... |
2141 |
} |
eadd99cc8 TOMOYO: Add audit... |
2142 |
buf = kzalloc(len + 32, GFP_NOFS); |
17fcfbd9d TOMOYO: Add inter... |
2143 |
if (!buf) |
8fbe71f0e TOMOYO: Make read... |
2144 |
return; |
17fcfbd9d TOMOYO: Add inter... |
2145 2146 2147 |
pos = 0; spin_lock(&tomoyo_query_list_lock); list_for_each(tmp, &tomoyo_query_list) { |
e2bf69077 TOMOYO: Rename sy... |
2148 |
struct tomoyo_query *ptr = list_entry(tmp, typeof(*ptr), list); |
f23571e86 TOMOYO: Copy dire... |
2149 |
if (pos++ != head->r.query_index) |
17fcfbd9d TOMOYO: Add inter... |
2150 2151 2152 2153 2154 2155 |
continue; /* * Some query can be skipped because tomoyo_query_list * can change, but I don't care. */ if (len == ptr->query_len) |
eadd99cc8 TOMOYO: Add audit... |
2156 2157 2158 |
snprintf(buf, len + 31, "Q%u-%hu %s", ptr->serial, ptr->retry, ptr->query); |
17fcfbd9d TOMOYO: Add inter... |
2159 2160 2161 2162 |
break; } spin_unlock(&tomoyo_query_list_lock); if (buf[0]) { |
17fcfbd9d TOMOYO: Add inter... |
2163 |
head->read_buf = buf; |
f23571e86 TOMOYO: Copy dire... |
2164 2165 |
head->r.w[head->r.w_pos++] = buf; head->r.query_index++; |
17fcfbd9d TOMOYO: Add inter... |
2166 2167 2168 |
} else { kfree(buf); } |
17fcfbd9d TOMOYO: Add inter... |
2169 2170 2171 2172 2173 2174 2175 2176 2177 2178 2179 2180 2181 2182 2183 2184 2185 |
} /** * tomoyo_write_answer - Write the supervisor's decision. * * @head: Pointer to "struct tomoyo_io_buffer". * * Returns 0 on success, -EINVAL otherwise. */ static int tomoyo_write_answer(struct tomoyo_io_buffer *head) { char *data = head->write_buf; struct list_head *tmp; unsigned int serial; unsigned int answer; spin_lock(&tomoyo_query_list_lock); list_for_each(tmp, &tomoyo_query_list) { |
e2bf69077 TOMOYO: Rename sy... |
2186 |
struct tomoyo_query *ptr = list_entry(tmp, typeof(*ptr), list); |
17fcfbd9d TOMOYO: Add inter... |
2187 2188 2189 2190 2191 2192 2193 |
ptr->timer = 0; } spin_unlock(&tomoyo_query_list_lock); if (sscanf(data, "A%u=%u", &serial, &answer) != 2) return -EINVAL; spin_lock(&tomoyo_query_list_lock); list_for_each(tmp, &tomoyo_query_list) { |
e2bf69077 TOMOYO: Rename sy... |
2194 |
struct tomoyo_query *ptr = list_entry(tmp, typeof(*ptr), list); |
17fcfbd9d TOMOYO: Add inter... |
2195 2196 |
if (ptr->serial != serial) continue; |
6041e8346 TOMOYO: Return ap... |
2197 2198 2199 2200 |
ptr->answer = answer; /* Remove from tomoyo_query_list. */ if (ptr->answer) list_del_init(&ptr->list); |
17fcfbd9d TOMOYO: Add inter... |
2201 2202 2203 2204 2205 2206 2207 |
break; } spin_unlock(&tomoyo_query_list_lock); return 0; } /** |
9590837b8 Common functions ... |
2208 2209 2210 2211 2212 2213 |
* tomoyo_read_version: Get version. * * @head: Pointer to "struct tomoyo_io_buffer". * * Returns version information. */ |
8fbe71f0e TOMOYO: Make read... |
2214 |
static void tomoyo_read_version(struct tomoyo_io_buffer *head) |
9590837b8 Common functions ... |
2215 |
{ |
f23571e86 TOMOYO: Copy dire... |
2216 |
if (!head->r.eof) { |
843d183cd TOMOYO: Bump vers... |
2217 |
tomoyo_io_printf(head, "2.5.0"); |
f23571e86 TOMOYO: Copy dire... |
2218 |
head->r.eof = true; |
9590837b8 Common functions ... |
2219 |
} |
9590837b8 Common functions ... |
2220 |
} |
b22b8b9fd TOMOYO: Rename me... |
2221 2222 2223 2224 2225 2226 2227 2228 2229 2230 2231 2232 2233 2234 2235 2236 2237 2238 2239 2240 2241 2242 2243 2244 2245 2246 2247 2248 2249 |
/* String table for /sys/kernel/security/tomoyo/stat interface. */ static const char * const tomoyo_policy_headers[TOMOYO_MAX_POLICY_STAT] = { [TOMOYO_STAT_POLICY_UPDATES] = "update:", [TOMOYO_STAT_POLICY_LEARNING] = "violation in learning mode:", [TOMOYO_STAT_POLICY_PERMISSIVE] = "violation in permissive mode:", [TOMOYO_STAT_POLICY_ENFORCING] = "violation in enforcing mode:", }; /* String table for /sys/kernel/security/tomoyo/stat interface. */ static const char * const tomoyo_memory_headers[TOMOYO_MAX_MEMORY_STAT] = { [TOMOYO_MEMORY_POLICY] = "policy:", [TOMOYO_MEMORY_AUDIT] = "audit log:", [TOMOYO_MEMORY_QUERY] = "query message:", }; /* Timestamp counter for last updated. */ static unsigned int tomoyo_stat_updated[TOMOYO_MAX_POLICY_STAT]; /* Counter for number of updates. */ static unsigned int tomoyo_stat_modified[TOMOYO_MAX_POLICY_STAT]; /** * tomoyo_update_stat - Update statistic counters. * * @index: Index for policy type. * * Returns nothing. */ void tomoyo_update_stat(const u8 index) { |
b22b8b9fd TOMOYO: Rename me... |
2250 2251 2252 2253 |
/* * I don't use atomic operations because race condition is not fatal. */ tomoyo_stat_updated[index]++; |
77f4fa089 tomoyo: Use sensi... |
2254 |
tomoyo_stat_modified[index] = get_seconds(); |
b22b8b9fd TOMOYO: Rename me... |
2255 2256 2257 2258 2259 2260 2261 2262 2263 2264 2265 2266 2267 2268 2269 2270 2271 2272 2273 2274 2275 2276 2277 2278 2279 2280 2281 2282 2283 2284 2285 2286 2287 2288 2289 2290 2291 2292 2293 2294 2295 2296 2297 2298 2299 2300 2301 2302 2303 2304 2305 2306 2307 2308 2309 2310 2311 2312 2313 2314 2315 2316 |
} /** * tomoyo_read_stat - Read statistic data. * * @head: Pointer to "struct tomoyo_io_buffer". * * Returns nothing. */ static void tomoyo_read_stat(struct tomoyo_io_buffer *head) { u8 i; unsigned int total = 0; if (head->r.eof) return; for (i = 0; i < TOMOYO_MAX_POLICY_STAT; i++) { tomoyo_io_printf(head, "Policy %-30s %10u", tomoyo_policy_headers[i], tomoyo_stat_updated[i]); if (tomoyo_stat_modified[i]) { struct tomoyo_time stamp; tomoyo_convert_time(tomoyo_stat_modified[i], &stamp); tomoyo_io_printf(head, " (Last: %04u/%02u/%02u " "%02u:%02u:%02u)", stamp.year, stamp.month, stamp.day, stamp.hour, stamp.min, stamp.sec); } tomoyo_set_lf(head); } for (i = 0; i < TOMOYO_MAX_MEMORY_STAT; i++) { unsigned int used = tomoyo_memory_used[i]; total += used; tomoyo_io_printf(head, "Memory used by %-22s %10u", tomoyo_memory_headers[i], used); used = tomoyo_memory_quota[i]; if (used) tomoyo_io_printf(head, " (Quota: %10u)", used); tomoyo_set_lf(head); } tomoyo_io_printf(head, "Total memory used: %10u ", total); head->r.eof = true; } /** * tomoyo_write_stat - Set memory quota. * * @head: Pointer to "struct tomoyo_io_buffer". * * Returns 0. */ static int tomoyo_write_stat(struct tomoyo_io_buffer *head) { char *data = head->write_buf; u8 i; if (tomoyo_str_starts(&data, "Memory used by ")) for (i = 0; i < TOMOYO_MAX_MEMORY_STAT; i++) if (tomoyo_str_starts(&data, tomoyo_memory_headers[i])) sscanf(data, "%u", &tomoyo_memory_quota[i]); return 0; } |
9590837b8 Common functions ... |
2317 2318 2319 2320 2321 2322 |
/** * tomoyo_open_control - open() for /sys/kernel/security/tomoyo/ interface. * * @type: Type of interface. * @file: Pointer to "struct file". * |
2e503bbb4 TOMOYO: Fix lockd... |
2323 |
* Returns 0 on success, negative value otherwise. |
9590837b8 Common functions ... |
2324 |
*/ |
c3ef1500e TOMOYO: Split fil... |
2325 |
int tomoyo_open_control(const u8 type, struct file *file) |
9590837b8 Common functions ... |
2326 |
{ |
4e5d6f7ec TOMOYO: Use GFP_N... |
2327 |
struct tomoyo_io_buffer *head = kzalloc(sizeof(*head), GFP_NOFS); |
9590837b8 Common functions ... |
2328 2329 2330 2331 |
if (!head) return -ENOMEM; mutex_init(&head->io_sem); |
17fcfbd9d TOMOYO: Add inter... |
2332 |
head->type = type; |
9590837b8 Common functions ... |
2333 2334 2335 |
switch (type) { case TOMOYO_DOMAINPOLICY: /* /sys/kernel/security/tomoyo/domain_policy */ |
e2bf69077 TOMOYO: Rename sy... |
2336 2337 |
head->write = tomoyo_write_domain; head->read = tomoyo_read_domain; |
9590837b8 Common functions ... |
2338 2339 2340 |
break; case TOMOYO_EXCEPTIONPOLICY: /* /sys/kernel/security/tomoyo/exception_policy */ |
e2bf69077 TOMOYO: Rename sy... |
2341 2342 |
head->write = tomoyo_write_exception; head->read = tomoyo_read_exception; |
9590837b8 Common functions ... |
2343 |
break; |
eadd99cc8 TOMOYO: Add audit... |
2344 2345 2346 2347 2348 |
case TOMOYO_AUDIT: /* /sys/kernel/security/tomoyo/audit */ head->poll = tomoyo_poll_log; head->read = tomoyo_read_log; break; |
9590837b8 Common functions ... |
2349 2350 2351 2352 2353 2354 2355 2356 2357 2358 |
case TOMOYO_PROCESS_STATUS: /* /sys/kernel/security/tomoyo/.process_status */ head->write = tomoyo_write_pid; head->read = tomoyo_read_pid; break; case TOMOYO_VERSION: /* /sys/kernel/security/tomoyo/version */ head->read = tomoyo_read_version; head->readbuf_size = 128; break; |
b22b8b9fd TOMOYO: Rename me... |
2359 2360 2361 2362 2363 |
case TOMOYO_STAT: /* /sys/kernel/security/tomoyo/stat */ head->write = tomoyo_write_stat; head->read = tomoyo_read_stat; head->readbuf_size = 1024; |
9590837b8 Common functions ... |
2364 2365 2366 2367 2368 2369 |
break; case TOMOYO_PROFILE: /* /sys/kernel/security/tomoyo/profile */ head->write = tomoyo_write_profile; head->read = tomoyo_read_profile; break; |
17fcfbd9d TOMOYO: Add inter... |
2370 2371 2372 2373 2374 |
case TOMOYO_QUERY: /* /sys/kernel/security/tomoyo/query */ head->poll = tomoyo_poll_query; head->write = tomoyo_write_answer; head->read = tomoyo_read_query; break; |
9590837b8 Common functions ... |
2375 2376 |
case TOMOYO_MANAGER: /* /sys/kernel/security/tomoyo/manager */ |
e2bf69077 TOMOYO: Rename sy... |
2377 2378 |
head->write = tomoyo_write_manager; head->read = tomoyo_read_manager; |
9590837b8 Common functions ... |
2379 2380 2381 2382 2383 2384 2385 2386 |
break; } if (!(file->f_mode & FMODE_READ)) { /* * No need to allocate read_buf since it is not opened * for reading. */ head->read = NULL; |
17fcfbd9d TOMOYO: Add inter... |
2387 2388 2389 |
head->poll = NULL; } else if (!head->poll) { /* Don't allocate read_buf for poll() access. */ |
9590837b8 Common functions ... |
2390 2391 |
if (!head->readbuf_size) head->readbuf_size = 4096 * 2; |
4e5d6f7ec TOMOYO: Use GFP_N... |
2392 |
head->read_buf = kzalloc(head->readbuf_size, GFP_NOFS); |
9590837b8 Common functions ... |
2393 |
if (!head->read_buf) { |
8e2d39a16 TOMOYO: Remove us... |
2394 |
kfree(head); |
9590837b8 Common functions ... |
2395 2396 2397 2398 2399 2400 2401 2402 2403 2404 2405 |
return -ENOMEM; } } if (!(file->f_mode & FMODE_WRITE)) { /* * No need to allocate write_buf since it is not opened * for writing. */ head->write = NULL; } else if (head->write) { head->writebuf_size = 4096 * 2; |
4e5d6f7ec TOMOYO: Use GFP_N... |
2406 |
head->write_buf = kzalloc(head->writebuf_size, GFP_NOFS); |
9590837b8 Common functions ... |
2407 |
if (!head->write_buf) { |
8e2d39a16 TOMOYO: Remove us... |
2408 2409 |
kfree(head->read_buf); kfree(head); |
9590837b8 Common functions ... |
2410 2411 2412 |
return -ENOMEM; } } |
9590837b8 Common functions ... |
2413 |
/* |
17fcfbd9d TOMOYO: Add inter... |
2414 2415 2416 2417 2418 |
* If the file is /sys/kernel/security/tomoyo/query , increment the * observer counter. * The obserber counter is used by tomoyo_supervisor() to see if * there is some process monitoring /sys/kernel/security/tomoyo/query. */ |
7c75964f4 TOMOYO: Cleanup p... |
2419 |
if (type == TOMOYO_QUERY) |
17fcfbd9d TOMOYO: Add inter... |
2420 |
atomic_inc(&tomoyo_query_observers); |
2e503bbb4 TOMOYO: Fix lockd... |
2421 2422 |
file->private_data = head; tomoyo_notify_gc(head, true); |
9590837b8 Common functions ... |
2423 2424 2425 2426 |
return 0; } /** |
0849e3ba5 TOMOYO: Add missi... |
2427 2428 2429 |
* tomoyo_poll_control - poll() for /sys/kernel/security/tomoyo/ interface. * * @file: Pointer to "struct file". |
6041e8346 TOMOYO: Return ap... |
2430 |
* @wait: Pointer to "poll_table". Maybe NULL. |
0849e3ba5 TOMOYO: Add missi... |
2431 |
* |
6041e8346 TOMOYO: Return ap... |
2432 2433 |
* Returns POLLIN | POLLRDNORM | POLLOUT | POLLWRNORM if ready to read/write, * POLLOUT | POLLWRNORM otherwise. |
0849e3ba5 TOMOYO: Add missi... |
2434 |
*/ |
6041e8346 TOMOYO: Return ap... |
2435 |
unsigned int tomoyo_poll_control(struct file *file, poll_table *wait) |
0849e3ba5 TOMOYO: Add missi... |
2436 2437 |
{ struct tomoyo_io_buffer *head = file->private_data; |
6041e8346 TOMOYO: Return ap... |
2438 2439 2440 |
if (head->poll) return head->poll(file, wait) | POLLOUT | POLLWRNORM; return POLLIN | POLLRDNORM | POLLOUT | POLLWRNORM; |
0849e3ba5 TOMOYO: Add missi... |
2441 2442 2443 |
} /** |
bd03a3e4c TOMOYO: Add polic... |
2444 2445 2446 2447 2448 2449 2450 2451 2452 2453 2454 2455 2456 2457 2458 2459 2460 2461 2462 2463 2464 2465 2466 2467 2468 2469 2470 2471 2472 2473 2474 2475 2476 2477 2478 2479 2480 2481 2482 |
* tomoyo_set_namespace_cursor - Set namespace to read. * * @head: Pointer to "struct tomoyo_io_buffer". * * Returns nothing. */ static inline void tomoyo_set_namespace_cursor(struct tomoyo_io_buffer *head) { struct list_head *ns; if (head->type != TOMOYO_EXCEPTIONPOLICY && head->type != TOMOYO_PROFILE) return; /* * If this is the first read, or reading previous namespace finished * and has more namespaces to read, update the namespace cursor. */ ns = head->r.ns; if (!ns || (head->r.eof && ns->next != &tomoyo_namespace_list)) { /* Clearing is OK because tomoyo_flush() returned true. */ memset(&head->r, 0, sizeof(head->r)); head->r.ns = ns ? ns->next : tomoyo_namespace_list.next; } } /** * tomoyo_has_more_namespace - Check for unread namespaces. * * @head: Pointer to "struct tomoyo_io_buffer". * * Returns true if we have more entries to print, false otherwise. */ static inline bool tomoyo_has_more_namespace(struct tomoyo_io_buffer *head) { return (head->type == TOMOYO_EXCEPTIONPOLICY || head->type == TOMOYO_PROFILE) && head->r.eof && head->r.ns->next != &tomoyo_namespace_list; } /** |
9590837b8 Common functions ... |
2483 2484 |
* tomoyo_read_control - read() for /sys/kernel/security/tomoyo/ interface. * |
0df7e8b8f TOMOYO: Cleanup p... |
2485 |
* @head: Pointer to "struct tomoyo_io_buffer". |
9590837b8 Common functions ... |
2486 2487 2488 2489 2490 |
* @buffer: Poiner to buffer to write to. * @buffer_len: Size of @buffer. * * Returns bytes read on success, negative value otherwise. */ |
2c47ab935 TOMOYO: Cleanup p... |
2491 2492 |
ssize_t tomoyo_read_control(struct tomoyo_io_buffer *head, char __user *buffer, const int buffer_len) |
9590837b8 Common functions ... |
2493 |
{ |
f23571e86 TOMOYO: Copy dire... |
2494 |
int len; |
2e503bbb4 TOMOYO: Fix lockd... |
2495 |
int idx; |
9590837b8 Common functions ... |
2496 2497 2498 2499 2500 |
if (!head->read) return -ENOSYS; if (mutex_lock_interruptible(&head->io_sem)) return -EINTR; |
f23571e86 TOMOYO: Copy dire... |
2501 2502 |
head->read_user_buf = buffer; head->read_user_buf_avail = buffer_len; |
2e503bbb4 TOMOYO: Fix lockd... |
2503 |
idx = tomoyo_read_lock(); |
f23571e86 TOMOYO: Copy dire... |
2504 2505 |
if (tomoyo_flush(head)) /* Call the policy handler. */ |
bd03a3e4c TOMOYO: Add polic... |
2506 2507 2508 2509 2510 |
do { tomoyo_set_namespace_cursor(head); head->read(head); } while (tomoyo_flush(head) && tomoyo_has_more_namespace(head)); |
2e503bbb4 TOMOYO: Fix lockd... |
2511 |
tomoyo_read_unlock(idx); |
f23571e86 TOMOYO: Copy dire... |
2512 |
len = head->read_user_buf - buffer; |
9590837b8 Common functions ... |
2513 2514 2515 2516 2517 |
mutex_unlock(&head->io_sem); return len; } /** |
bd03a3e4c TOMOYO: Add polic... |
2518 2519 2520 2521 2522 2523 2524 2525 2526 2527 2528 2529 2530 2531 2532 2533 2534 2535 2536 2537 2538 2539 2540 2541 2542 2543 2544 2545 2546 2547 2548 2549 2550 2551 2552 2553 2554 |
* tomoyo_parse_policy - Parse a policy line. * * @head: Poiter to "struct tomoyo_io_buffer". * @line: Line to parse. * * Returns 0 on success, negative value otherwise. * * Caller holds tomoyo_read_lock(). */ static int tomoyo_parse_policy(struct tomoyo_io_buffer *head, char *line) { /* Delete request? */ head->w.is_delete = !strncmp(line, "delete ", 7); if (head->w.is_delete) memmove(line, line + 7, strlen(line + 7) + 1); /* Selecting namespace to update. */ if (head->type == TOMOYO_EXCEPTIONPOLICY || head->type == TOMOYO_PROFILE) { if (*line == '<') { char *cp = strchr(line, ' '); if (cp) { *cp++ = '\0'; head->w.ns = tomoyo_assign_namespace(line); memmove(line, cp, strlen(cp) + 1); } else head->w.ns = NULL; } else head->w.ns = &tomoyo_kernel_namespace; /* Don't allow updating if namespace is invalid. */ if (!head->w.ns) return -ENOENT; } /* Do the update. */ return head->write(head); } /** |
9590837b8 Common functions ... |
2555 2556 |
* tomoyo_write_control - write() for /sys/kernel/security/tomoyo/ interface. * |
0df7e8b8f TOMOYO: Cleanup p... |
2557 |
* @head: Pointer to "struct tomoyo_io_buffer". |
9590837b8 Common functions ... |
2558 2559 2560 2561 2562 |
* @buffer: Pointer to buffer to read from. * @buffer_len: Size of @buffer. * * Returns @buffer_len on success, negative value otherwise. */ |
2c47ab935 TOMOYO: Cleanup p... |
2563 2564 |
ssize_t tomoyo_write_control(struct tomoyo_io_buffer *head, const char __user *buffer, const int buffer_len) |
9590837b8 Common functions ... |
2565 |
{ |
9590837b8 Common functions ... |
2566 |
int error = buffer_len; |
bd03a3e4c TOMOYO: Add polic... |
2567 |
size_t avail_len = buffer_len; |
9590837b8 Common functions ... |
2568 |
char *cp0 = head->write_buf; |
2e503bbb4 TOMOYO: Fix lockd... |
2569 |
int idx; |
9590837b8 Common functions ... |
2570 2571 2572 2573 |
if (!head->write) return -ENOSYS; if (!access_ok(VERIFY_READ, buffer, buffer_len)) return -EFAULT; |
9590837b8 Common functions ... |
2574 2575 |
if (mutex_lock_interruptible(&head->io_sem)) return -EINTR; |
e0b057b40 TOMOYO: Fix incom... |
2576 |
head->read_user_buf_avail = 0; |
2e503bbb4 TOMOYO: Fix lockd... |
2577 |
idx = tomoyo_read_lock(); |
9590837b8 Common functions ... |
2578 2579 2580 |
/* Read a line and dispatch it to the policy handler. */ while (avail_len > 0) { char c; |
0df7e8b8f TOMOYO: Cleanup p... |
2581 |
if (head->w.avail >= head->writebuf_size - 1) { |
bd03a3e4c TOMOYO: Add polic... |
2582 2583 2584 2585 2586 2587 2588 2589 2590 2591 2592 2593 2594 |
const int len = head->writebuf_size * 2; char *cp = kzalloc(len, GFP_NOFS); if (!cp) { error = -ENOMEM; break; } memmove(cp, cp0, head->w.avail); kfree(cp0); head->write_buf = cp; cp0 = cp; head->writebuf_size = len; } if (get_user(c, buffer)) { |
9590837b8 Common functions ... |
2595 2596 2597 2598 2599 |
error = -EFAULT; break; } buffer++; avail_len--; |
0df7e8b8f TOMOYO: Cleanup p... |
2600 |
cp0[head->w.avail++] = c; |
9590837b8 Common functions ... |
2601 2602 2603 |
if (c != ' ') continue; |
0df7e8b8f TOMOYO: Cleanup p... |
2604 2605 |
cp0[head->w.avail - 1] = '\0'; head->w.avail = 0; |
9590837b8 Common functions ... |
2606 |
tomoyo_normalize_line(cp0); |
bd03a3e4c TOMOYO: Add polic... |
2607 2608 2609 2610 2611 2612 2613 2614 2615 2616 2617 2618 2619 2620 2621 2622 2623 2624 2625 2626 2627 2628 2629 2630 2631 2632 2633 2634 2635 2636 2637 |
if (!strcmp(cp0, "reset")) { head->w.ns = &tomoyo_kernel_namespace; head->w.domain = NULL; memset(&head->r, 0, sizeof(head->r)); continue; } /* Don't allow updating policies by non manager programs. */ switch (head->type) { case TOMOYO_PROCESS_STATUS: /* This does not write anything. */ break; case TOMOYO_DOMAINPOLICY: if (tomoyo_select_domain(head, cp0)) continue; /* fall through */ case TOMOYO_EXCEPTIONPOLICY: if (!strcmp(cp0, "select transition_only")) { head->r.print_transition_related_only = true; continue; } /* fall through */ default: if (!tomoyo_manager()) { error = -EPERM; goto out; } } switch (tomoyo_parse_policy(head, cp0)) { case -EPERM: error = -EPERM; goto out; |
b22b8b9fd TOMOYO: Rename me... |
2638 2639 2640 2641 |
case 0: switch (head->type) { case TOMOYO_DOMAINPOLICY: case TOMOYO_EXCEPTIONPOLICY: |
b22b8b9fd TOMOYO: Rename me... |
2642 2643 2644 2645 2646 2647 2648 2649 2650 |
case TOMOYO_STAT: case TOMOYO_PROFILE: case TOMOYO_MANAGER: tomoyo_update_stat(TOMOYO_STAT_POLICY_UPDATES); break; default: break; } break; |
bd03a3e4c TOMOYO: Add polic... |
2651 |
} |
9590837b8 Common functions ... |
2652 |
} |
bd03a3e4c TOMOYO: Add polic... |
2653 |
out: |
2e503bbb4 TOMOYO: Fix lockd... |
2654 |
tomoyo_read_unlock(idx); |
9590837b8 Common functions ... |
2655 2656 2657 2658 2659 2660 2661 |
mutex_unlock(&head->io_sem); return error; } /** * tomoyo_close_control - close() for /sys/kernel/security/tomoyo/ interface. * |
0df7e8b8f TOMOYO: Cleanup p... |
2662 |
* @head: Pointer to "struct tomoyo_io_buffer". |
9590837b8 Common functions ... |
2663 |
*/ |
e53cfda5d tomoyo_close_cont... |
2664 |
void tomoyo_close_control(struct tomoyo_io_buffer *head) |
9590837b8 Common functions ... |
2665 |
{ |
17fcfbd9d TOMOYO: Add inter... |
2666 2667 2668 2669 |
/* * If the file is /sys/kernel/security/tomoyo/query , decrement the * observer counter. */ |
2e503bbb4 TOMOYO: Fix lockd... |
2670 2671 2672 2673 |
if (head->type == TOMOYO_QUERY && atomic_dec_and_test(&tomoyo_query_observers)) wake_up_all(&tomoyo_answer_wait); tomoyo_notify_gc(head, false); |
9590837b8 Common functions ... |
2674 2675 2676 |
} /** |
c3ef1500e TOMOYO: Split fil... |
2677 |
* tomoyo_check_profile - Check all profiles currently assigned to domains are defined. |
9590837b8 Common functions ... |
2678 |
*/ |
c3ef1500e TOMOYO: Split fil... |
2679 |
void tomoyo_check_profile(void) |
9590837b8 Common functions ... |
2680 |
{ |
c3ef1500e TOMOYO: Split fil... |
2681 2682 2683 |
struct tomoyo_domain_info *domain; const int idx = tomoyo_read_lock(); tomoyo_policy_loaded = true; |
843d183cd TOMOYO: Bump vers... |
2684 2685 |
printk(KERN_INFO "TOMOYO: 2.5.0 "); |
c3ef1500e TOMOYO: Split fil... |
2686 2687 |
list_for_each_entry_rcu(domain, &tomoyo_domain_list, list) { const u8 profile = domain->profile; |
bd03a3e4c TOMOYO: Add polic... |
2688 |
const struct tomoyo_policy_namespace *ns = domain->ns; |
843d183cd TOMOYO: Bump vers... |
2689 |
if (ns->profile_version != 20110903) |
bd03a3e4c TOMOYO: Add polic... |
2690 2691 2692 2693 2694 2695 2696 2697 2698 2699 |
printk(KERN_ERR "Profile version %u is not supported. ", ns->profile_version); else if (!ns->profile_ptr[profile]) printk(KERN_ERR "Profile %u (used by '%s') is not defined. ", profile, domain->domainname->name); else |
c3ef1500e TOMOYO: Split fil... |
2700 |
continue; |
bd03a3e4c TOMOYO: Add polic... |
2701 |
printk(KERN_ERR |
843d183cd TOMOYO: Bump vers... |
2702 |
"Userland tools for TOMOYO 2.5 must be installed and " |
bd03a3e4c TOMOYO: Add polic... |
2703 2704 |
"policy must be initialized. "); |
843d183cd TOMOYO: Bump vers... |
2705 |
printk(KERN_ERR "Please see http://tomoyo.sourceforge.jp/2.5/ " |
9f1c1d426 TOMOYO: Print URL... |
2706 2707 |
"for more information. "); |
bd03a3e4c TOMOYO: Add polic... |
2708 |
panic("STOP!"); |
c3ef1500e TOMOYO: Split fil... |
2709 2710 |
} tomoyo_read_unlock(idx); |
c3ef1500e TOMOYO: Split fil... |
2711 2712 |
printk(KERN_INFO "Mandatory Access Control activated. "); |
9590837b8 Common functions ... |
2713 |
} |
efe836ab2 TOMOYO: Add built... |
2714 2715 2716 2717 2718 2719 2720 2721 2722 2723 2724 2725 2726 2727 2728 2729 2730 2731 2732 2733 2734 2735 2736 2737 2738 2739 2740 2741 2742 2743 2744 2745 2746 2747 2748 2749 2750 2751 2752 2753 2754 2755 2756 2757 2758 2759 2760 2761 2762 2763 2764 2765 2766 2767 2768 2769 2770 2771 2772 2773 |
/** * tomoyo_load_builtin_policy - Load built-in policy. * * Returns nothing. */ void __init tomoyo_load_builtin_policy(void) { /* * This include file is manually created and contains built-in policy * named "tomoyo_builtin_profile", "tomoyo_builtin_exception_policy", * "tomoyo_builtin_domain_policy", "tomoyo_builtin_manager", * "tomoyo_builtin_stat" in the form of "static char [] __initdata". */ #include "builtin-policy.h" u8 i; const int idx = tomoyo_read_lock(); for (i = 0; i < 5; i++) { struct tomoyo_io_buffer head = { }; char *start = ""; switch (i) { case 0: start = tomoyo_builtin_profile; head.type = TOMOYO_PROFILE; head.write = tomoyo_write_profile; break; case 1: start = tomoyo_builtin_exception_policy; head.type = TOMOYO_EXCEPTIONPOLICY; head.write = tomoyo_write_exception; break; case 2: start = tomoyo_builtin_domain_policy; head.type = TOMOYO_DOMAINPOLICY; head.write = tomoyo_write_domain; break; case 3: start = tomoyo_builtin_manager; head.type = TOMOYO_MANAGER; head.write = tomoyo_write_manager; break; case 4: start = tomoyo_builtin_stat; head.type = TOMOYO_STAT; head.write = tomoyo_write_stat; break; } while (1) { char *end = strchr(start, ' '); if (!end) break; *end = '\0'; tomoyo_normalize_line(start); head.write_buf = start; tomoyo_parse_policy(&head, start); start = end + 1; } } tomoyo_read_unlock(idx); |
0e4ae0e0d TOMOYO: Make seve... |
2774 2775 2776 |
#ifdef CONFIG_SECURITY_TOMOYO_OMIT_USERSPACE_LOADER tomoyo_check_profile(); #endif |
efe836ab2 TOMOYO: Add built... |
2777 |
} |