TOMOYO: Aggregate reader functions. (31845e8c) · Commits · e / devices / android_kernel_oneplus_sm7250

security/tomoyo/common.c

+200 −59

Original line number	Diff line number	Diff line
		@@ -1192,75 +1192,216 @@ static int tomoyo_write_exception_policy(struct tomoyo_io_buffer *head)
		return -EINVAL;
		}

		static void tomoyo_print_number(char *buffer, int buffer_len,
		const struct tomoyo_number_union *ptr)
		{
		int i;
		unsigned long min = ptr->values[0];
		const unsigned long max = ptr->values[1];
		u8 min_type = ptr->min_type;
		const u8 max_type = ptr->max_type;
		memset(buffer, 0, buffer_len);
		buffer_len -= 2;
		for (i = 0; i < 2; i++) {
		int len;
		switch (min_type) {
		case TOMOYO_VALUE_TYPE_HEXADECIMAL:
		snprintf(buffer, buffer_len, "0x%lX", min);
		break;
		case TOMOYO_VALUE_TYPE_OCTAL:
		snprintf(buffer, buffer_len, "0%lo", min);
		break;
		default:
		snprintf(buffer, buffer_len, "%lu", min);
		break;
		}
		if (min == max && min_type == max_type)
		break;
		len = strlen(buffer);
		buffer[len++] = '-';
		buffer += len;
		buffer_len -= len;
		min_type = max_type;
		min = max;
		}
		}

		static const char *tomoyo_group_name[TOMOYO_MAX_GROUP] = {
		[TOMOYO_PATH_GROUP] = TOMOYO_KEYWORD_PATH_GROUP,
		[TOMOYO_NUMBER_GROUP] = TOMOYO_KEYWORD_NUMBER_GROUP
		};

		/**
		* tomoyo_read_exception_policy - Read exception policy.
		* tomoyo_read_group - Read "struct tomoyo_path_group"/"struct tomoyo_number_group" list.
		*
		* @head: Pointer to "struct tomoyo_io_buffer".
		* @idx: Index number.
		*
		* Returns true on success, false otherwise.
		*
		* Caller holds tomoyo_read_lock().
		*/
		static void tomoyo_read_exception_policy(struct tomoyo_io_buffer *head)
		static bool tomoyo_read_group(struct tomoyo_io_buffer *head, const int idx)
		{
		if (!head->read_eof) {
		switch (head->read_step) {
		case 0:
		head->read_var2 = NULL;
		head->read_step = 1;
		case 1:
		if (!tomoyo_read_domain_keeper_policy(head))
		break;
		head->read_var2 = NULL;
		head->read_step = 2;
		case 2:
		if (!tomoyo_read_globally_readable_policy(head))
		break;
		head->read_var2 = NULL;
		head->read_step = 3;
		case 3:
		head->read_var2 = NULL;
		head->read_step = 4;
		case 4:
		if (!tomoyo_read_domain_initializer_policy(head))
		break;
		head->read_var2 = NULL;
		head->read_step = 5;
		case 5:
		if (!tomoyo_read_alias_policy(head))
		struct list_head *gpos;
		struct list_head *mpos;
		const char *w[3] = { "", "", "" };
		w[0] = tomoyo_group_name[idx];
		list_for_each_cookie(gpos, head->read_var1, &tomoyo_group_list[idx]) {
		struct tomoyo_group *group =
		list_entry(gpos, struct tomoyo_group, list);
		w[1] = group->group_name->name;
		list_for_each_cookie(mpos, head->read_var2,
		&group->member_list) {
		char buffer[128];
		struct tomoyo_acl_head *ptr =
		list_entry(mpos, struct tomoyo_acl_head, list);
		if (ptr->is_deleted)
		continue;
		if (idx == TOMOYO_PATH_GROUP) {
		w[2] = container_of(ptr,
		struct tomoyo_path_group,
		head)->member_name->name;
		} else if (idx == TOMOYO_NUMBER_GROUP) {
		tomoyo_print_number(buffer, sizeof(buffer),
		&container_of
		(ptr, struct
		tomoyo_number_group,
		head)->number);
		w[2] = buffer;
		}
		if (!tomoyo_io_printf(head, "%s%s %s\n", w[0], w[1],
		w[2]))
		return false;
		}
		}
		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)
		{
		struct list_head *pos;
		list_for_each_cookie(pos, head->read_var2, &tomoyo_policy_list[idx]) {
		const char *w[4] = { "", "", "", "" };
		struct tomoyo_acl_head acl = container_of(pos, typeof(acl),
		list);
		if (acl->is_deleted)
		continue;
		switch (idx) {
		case TOMOYO_ID_DOMAIN_KEEPER:
		{
		struct tomoyo_domain_keeper_entry *ptr =
		container_of(acl, typeof(*ptr), head);
		w[0] = ptr->is_not ?
		TOMOYO_KEYWORD_NO_KEEP_DOMAIN :
		TOMOYO_KEYWORD_KEEP_DOMAIN;
		if (ptr->program) {
		w[1] = ptr->program->name;
		w[2] = " from ";
		}
		w[3] = ptr->domainname->name;
		}
		break;
		head->read_var2 = NULL;
		head->read_step = 6;
		case 6:
		if (!tomoyo_read_aggregator_policy(head))
		case TOMOYO_ID_DOMAIN_INITIALIZER:
		{
		struct tomoyo_domain_initializer_entry *ptr =
		container_of(acl, typeof(*ptr), head);
		w[0] = ptr->is_not ?
		TOMOYO_KEYWORD_NO_INITIALIZE_DOMAIN :
		TOMOYO_KEYWORD_INITIALIZE_DOMAIN;
		w[1] = ptr->program->name;
		if (ptr->domainname) {
		w[2] = " from ";
		w[3] = ptr->domainname->name;
		}
		}
		break;
		head->read_var2 = NULL;
		head->read_step = 7;
		case 7:
		if (!tomoyo_read_file_pattern(head))
		case TOMOYO_ID_GLOBALLY_READABLE:
		{
		struct tomoyo_globally_readable_file_entry *ptr
		= container_of(acl, typeof(*ptr), head);
		w[0] = TOMOYO_KEYWORD_ALLOW_READ;
		w[1] = ptr->filename->name;
		}
		break;
		head->read_var2 = NULL;
		head->read_step = 8;
		case 8:
		if (!tomoyo_read_no_rewrite_policy(head))
		case TOMOYO_ID_ALIAS:
		{
		struct tomoyo_alias_entry *ptr =
		container_of(acl, typeof(*ptr), head);
		w[0] = TOMOYO_KEYWORD_ALIAS;
		w[1] = ptr->original_name->name;
		w[2] = " ";
		w[3] = ptr->aliased_name->name;
		}
		break;
		head->read_var2 = NULL;
		head->read_step = 9;
		case 9:
		if (!tomoyo_read_path_group_policy(head))
		case TOMOYO_ID_AGGREGATOR:
		{
		struct tomoyo_aggregator_entry *ptr =
		container_of(acl, typeof(*ptr), head);
		w[0] = TOMOYO_KEYWORD_AGGREGATOR;
		w[1] = ptr->original_name->name;
		w[2] = " ";
		w[3] = ptr->aggregated_name->name;
		}
		break;
		head->read_var1 = NULL;
		head->read_var2 = NULL;
		head->read_step = 10;
		case 10:
		if (!tomoyo_read_number_group_policy(head))
		case TOMOYO_ID_PATTERN:
		{
		struct tomoyo_pattern_entry *ptr =
		container_of(acl, typeof(*ptr), head);
		w[0] = TOMOYO_KEYWORD_FILE_PATTERN;
		w[1] = ptr->pattern->name;
		}
		break;
		head->read_var1 = NULL;
		head->read_var2 = NULL;
		head->read_step = 11;
		case 11:
		head->read_eof = true;
		case TOMOYO_ID_NO_REWRITE:
		{
		struct tomoyo_no_rewrite_entry *ptr =
		container_of(acl, typeof(*ptr), head);
		w[0] = TOMOYO_KEYWORD_DENY_REWRITE;
		w[1] = ptr->pattern->name;
		}
		break;
		default:
		continue;
		}
		if (!tomoyo_io_printf(head, "%s%s%s%s\n", w[0], w[1], w[2],
		w[3]))
		return false;
		}
		return true;
		}

		/**
		* tomoyo_read_exception_policy - Read exception policy.
		*
		* @head: Pointer to "struct tomoyo_io_buffer".
		*
		* Caller holds tomoyo_read_lock().
		*/
		static void tomoyo_read_exception_policy(struct tomoyo_io_buffer *head)
		{
		if (head->read_eof)
		return;
		while (head->read_step < TOMOYO_MAX_POLICY &&
		tomoyo_read_policy(head, head->read_step))
		head->read_step++;
		if (head->read_step < TOMOYO_MAX_POLICY)
		return;
		while (head->read_step < TOMOYO_MAX_POLICY + TOMOYO_MAX_GROUP &&
		tomoyo_read_group(head, head->read_step - TOMOYO_MAX_POLICY))
		head->read_step++;
		if (head->read_step < TOMOYO_MAX_POLICY + TOMOYO_MAX_GROUP)
		return;
		head->read_eof = true;
		}

		/**

security/tomoyo/common.h

+0 −22

Original line number	Diff line number	Diff line
		@@ -794,28 +794,6 @@ bool tomoyo_path_matches_pattern(const struct tomoyo_path_info *filename,
		bool tomoyo_print_number_union(struct tomoyo_io_buffer *head,
		const struct tomoyo_number_union *ptr);
		bool tomoyo_parse_number_union(char data, struct tomoyo_number_union num);

		/* Read "aggregator" entry in exception policy. */
		bool tomoyo_read_aggregator_policy(struct tomoyo_io_buffer *head);
		/* Read "alias" entry in exception policy. */
		bool tomoyo_read_alias_policy(struct tomoyo_io_buffer *head);
		/*
		* Read "initialize_domain" and "no_initialize_domain" entry
		* in exception policy.
		*/
		bool tomoyo_read_domain_initializer_policy(struct tomoyo_io_buffer *head);
		/* Read "keep_domain" and "no_keep_domain" entry in exception policy. */
		bool tomoyo_read_domain_keeper_policy(struct tomoyo_io_buffer *head);
		/* Read "file_pattern" entry in exception policy. */
		bool tomoyo_read_file_pattern(struct tomoyo_io_buffer *head);
		/* Read "path_group" entry in exception policy. */
		bool tomoyo_read_path_group_policy(struct tomoyo_io_buffer *head);
		/* Read "number_group" entry in exception policy. */
		bool tomoyo_read_number_group_policy(struct tomoyo_io_buffer *head);
		/* Read "allow_read" entry in exception policy. */
		bool tomoyo_read_globally_readable_policy(struct tomoyo_io_buffer *head);
		/* Read "deny_rewrite" entry in exception policy. */
		bool tomoyo_read_no_rewrite_policy(struct tomoyo_io_buffer *head);
		/* Tokenize a line. */
		bool tomoyo_tokenize(char buffer, char w[], size_t size);
		/* Write domain policy violation warning message to console? */

security/tomoyo/domain.c

+0 −140

Original line number	Diff line number	Diff line
		@@ -209,45 +209,6 @@ static int tomoyo_update_domain_initializer_entry(const char *domainname,
		return error;
		}

		/**
		* tomoyo_read_domain_initializer_policy - Read "struct tomoyo_domain_initializer_entry" list.
		*
		* @head: Pointer to "struct tomoyo_io_buffer".
		*
		* Returns true on success, false otherwise.
		*
		* Caller holds tomoyo_read_lock().
		*/
		bool tomoyo_read_domain_initializer_policy(struct tomoyo_io_buffer *head)
		{
		struct list_head *pos;
		bool done = true;

		list_for_each_cookie(pos, head->read_var2, &tomoyo_policy_list
		[TOMOYO_ID_DOMAIN_INITIALIZER]) {
		const char *no;
		const char *from = "";
		const char *domain = "";
		struct tomoyo_domain_initializer_entry *ptr;
		ptr = list_entry(pos, struct tomoyo_domain_initializer_entry,
		head.list);
		if (ptr->head.is_deleted)
		continue;
		no = ptr->is_not ? "no_" : "";
		if (ptr->domainname) {
		from = " from ";
		domain = ptr->domainname->name;
		}
		done = tomoyo_io_printf(head,
		"%s" TOMOYO_KEYWORD_INITIALIZE_DOMAIN
		"%s%s%s\n", no, ptr->program->name,
		from, domain);
		if (!done)
		break;
		}
		return done;
		}

		/**
		* tomoyo_write_domain_initializer_policy - Write "struct tomoyo_domain_initializer_entry" list.
		*
		@@ -398,46 +359,6 @@ int tomoyo_write_domain_keeper_policy(char *data, const bool is_not,
		return tomoyo_update_domain_keeper_entry(data, NULL, is_not, is_delete);
		}

		/**
		* tomoyo_read_domain_keeper_policy - Read "struct tomoyo_domain_keeper_entry" list.
		*
		* @head: Pointer to "struct tomoyo_io_buffer".
		*
		* Returns true on success, false otherwise.
		*
		* Caller holds tomoyo_read_lock().
		*/
		bool tomoyo_read_domain_keeper_policy(struct tomoyo_io_buffer *head)
		{
		struct list_head *pos;
		bool done = true;

		list_for_each_cookie(pos, head->read_var2,
		&tomoyo_policy_list[TOMOYO_ID_DOMAIN_KEEPER]) {
		struct tomoyo_domain_keeper_entry *ptr;
		const char *no;
		const char *from = "";
		const char *program = "";

		ptr = list_entry(pos, struct tomoyo_domain_keeper_entry,
		head.list);
		if (ptr->head.is_deleted)
		continue;
		no = ptr->is_not ? "no_" : "";
		if (ptr->program) {
		from = " from ";
		program = ptr->program->name;
		}
		done = tomoyo_io_printf(head,
		"%s" TOMOYO_KEYWORD_KEEP_DOMAIN
		"%s%s%s\n", no, program, from,
		ptr->domainname->name);
		if (!done)
		break;
		}
		return done;
		}

		/**
		* tomoyo_domain_keeper - Check whether the given program causes domain transition suppression.
		*
		@@ -526,37 +447,6 @@ static int tomoyo_update_aggregator_entry(const char *original_name,
		return error;
		}

		/**
		* tomoyo_read_aggregator_policy - Read "struct tomoyo_aggregator_entry" list.
		*
		* @head: Pointer to "struct tomoyo_io_buffer".
		*
		* Returns true on success, false otherwise.
		*
		* Caller holds tomoyo_read_lock().
		*/
		bool tomoyo_read_aggregator_policy(struct tomoyo_io_buffer *head)
		{
		struct list_head *pos;
		bool done = true;

		list_for_each_cookie(pos, head->read_var2,
		&tomoyo_policy_list[TOMOYO_ID_AGGREGATOR]) {
		struct tomoyo_aggregator_entry *ptr;

		ptr = list_entry(pos, struct tomoyo_aggregator_entry,
		head.list);
		if (ptr->head.is_deleted)
		continue;
		done = tomoyo_io_printf(head, TOMOYO_KEYWORD_AGGREGATOR
		"%s %s\n", ptr->original_name->name,
		ptr->aggregated_name->name);
		if (!done)
		break;
		}
		return done;
		}

		/**
		* tomoyo_write_aggregator_policy - Write "struct tomoyo_aggregator_entry" list.
		*
		@@ -623,36 +513,6 @@ static int tomoyo_update_alias_entry(const char *original_name,
		return error;
		}

		/**
		* tomoyo_read_alias_policy - Read "struct tomoyo_alias_entry" list.
		*
		* @head: Pointer to "struct tomoyo_io_buffer".
		*
		* Returns true on success, false otherwise.
		*
		* Caller holds tomoyo_read_lock().
		*/
		bool tomoyo_read_alias_policy(struct tomoyo_io_buffer *head)
		{
		struct list_head *pos;
		bool done = true;

		list_for_each_cookie(pos, head->read_var2,
		&tomoyo_policy_list[TOMOYO_ID_ALIAS]) {
		struct tomoyo_alias_entry *ptr;

		ptr = list_entry(pos, struct tomoyo_alias_entry, head.list);
		if (ptr->head.is_deleted)
		continue;
		done = tomoyo_io_printf(head, TOMOYO_KEYWORD_ALIAS "%s %s\n",
		ptr->original_name->name,
		ptr->aliased_name->name);
		if (!done)
		break;
		}
		return done;
		}

		/**
		* tomoyo_write_alias_policy - Write "struct tomoyo_alias_entry" list.
		*

security/tomoyo/file.c

+0 −87

Original line number	Diff line number	Diff line
		@@ -344,36 +344,6 @@ int tomoyo_write_globally_readable_policy(char *data, const bool is_delete)
		return tomoyo_update_globally_readable_entry(data, is_delete);
		}

		/**
		* tomoyo_read_globally_readable_policy - Read "struct tomoyo_globally_readable_file_entry" list.
		*
		* @head: Pointer to "struct tomoyo_io_buffer".
		*
		* Returns true on success, false otherwise.
		*
		* Caller holds tomoyo_read_lock().
		*/
		bool tomoyo_read_globally_readable_policy(struct tomoyo_io_buffer *head)
		{
		struct list_head *pos;
		bool done = true;

		list_for_each_cookie(pos, head->read_var2,
		&tomoyo_policy_list[TOMOYO_ID_GLOBALLY_READABLE]) {
		struct tomoyo_globally_readable_file_entry *ptr;
		ptr = list_entry(pos,
		struct tomoyo_globally_readable_file_entry,
		head.list);
		if (ptr->head.is_deleted)
		continue;
		done = tomoyo_io_printf(head, TOMOYO_KEYWORD_ALLOW_READ "%s\n",
		ptr->filename->name);
		if (!done)
		break;
		}
		return done;
		}

		static bool tomoyo_same_pattern(const struct tomoyo_acl_head *a,
		const struct tomoyo_acl_head *b)
		{
		@@ -457,34 +427,6 @@ int tomoyo_write_pattern_policy(char *data, const bool is_delete)
		return tomoyo_update_file_pattern_entry(data, is_delete);
		}

		/**
		* tomoyo_read_file_pattern - Read "struct tomoyo_pattern_entry" list.
		*
		* @head: Pointer to "struct tomoyo_io_buffer".
		*
		* Returns true on success, false otherwise.
		*
		* Caller holds tomoyo_read_lock().
		*/
		bool tomoyo_read_file_pattern(struct tomoyo_io_buffer *head)
		{
		struct list_head *pos;
		bool done = true;

		list_for_each_cookie(pos, head->read_var2,
		&tomoyo_policy_list[TOMOYO_ID_PATTERN]) {
		struct tomoyo_pattern_entry *ptr;
		ptr = list_entry(pos, struct tomoyo_pattern_entry, head.list);
		if (ptr->head.is_deleted)
		continue;
		done = tomoyo_io_printf(head, TOMOYO_KEYWORD_FILE_PATTERN
		"%s\n", ptr->pattern->name);
		if (!done)
		break;
		}
		return done;
		}

		static bool tomoyo_same_no_rewrite(const struct tomoyo_acl_head *a,
		const struct tomoyo_acl_head *b)
		{
		@@ -563,35 +505,6 @@ int tomoyo_write_no_rewrite_policy(char *data, const bool is_delete)
		return tomoyo_update_no_rewrite_entry(data, is_delete);
		}

		/**
		* tomoyo_read_no_rewrite_policy - Read "struct tomoyo_no_rewrite_entry" list.
		*
		* @head: Pointer to "struct tomoyo_io_buffer".
		*
		* Returns true on success, false otherwise.
		*
		* Caller holds tomoyo_read_lock().
		*/
		bool tomoyo_read_no_rewrite_policy(struct tomoyo_io_buffer *head)
		{
		struct list_head *pos;
		bool done = true;

		list_for_each_cookie(pos, head->read_var2,
		&tomoyo_policy_list[TOMOYO_ID_NO_REWRITE]) {
		struct tomoyo_no_rewrite_entry *ptr;
		ptr = list_entry(pos, struct tomoyo_no_rewrite_entry,
		head.list);
		if (ptr->head.is_deleted)
		continue;
		done = tomoyo_io_printf(head, TOMOYO_KEYWORD_DENY_REWRITE
		"%s\n", ptr->pattern->name);
		if (!done)
		break;
		}
		return done;
		}

		static bool tomoyo_check_path_acl(const struct tomoyo_request_info *r,
		const struct tomoyo_acl_info *ptr)
		{

security/tomoyo/number_group.c

+0 −41

Original line number	Diff line number	Diff line
		@@ -96,47 +96,6 @@ int tomoyo_write_number_group_policy(char *data, const bool is_delete)
		return error;
		}

		/**
		* tomoyo_read_number_group_policy - Read "struct tomoyo_number_group" list.
		*
		* @head: Pointer to "struct tomoyo_io_buffer".
		*
		* Returns true on success, false otherwise.
		*
		* Caller holds tomoyo_read_lock().
		*/
		bool tomoyo_read_number_group_policy(struct tomoyo_io_buffer *head)
		{
		struct list_head *gpos;
		struct list_head *mpos;
		list_for_each_cookie(gpos, head->read_var1,
		&tomoyo_group_list[TOMOYO_NUMBER_GROUP]) {
		struct tomoyo_group *group;
		const char *name;
		group = list_entry(gpos, struct tomoyo_group, list);
		name = group->group_name->name;
		list_for_each_cookie(mpos, head->read_var2,
		&group->member_list) {
		int pos;
		const struct tomoyo_number_group *member
		= list_entry(mpos,
		struct tomoyo_number_group,
		head.list);
		if (member->head.is_deleted)
		continue;
		pos = head->read_avail;
		if (!tomoyo_io_printf(head, TOMOYO_KEYWORD_NUMBER_GROUP
		"%s", name) \|\|
		!tomoyo_print_number_union(head, &member->number) \|\|
		!tomoyo_io_printf(head, "\n")) {
		head->read_avail = pos;
		return false;
		}
		}
		}
		return true;
		}

		/**
		* tomoyo_number_matches_group - Check whether the given number matches members of the given number group.
		*