forked from ~ljy/RK356X_SDK_RELEASE
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hc
2023-12-11 072de836f53be56a70cecf70b43ae43b7ce17376 
 kernel/security/tomoyo/condition.c
....@@ -28,9 +28,11 @@
2828 {
2929 	int i;
3030 	struct tomoyo_path_info arg;
31
+
3132 	arg.name = arg_ptr;
3233 	for (i = 0; i < argc; argv++, checked++, i++) {
3334 		bool result;
35
+
3436 		if (index != argv->index)
3537 			continue;
3638 		*checked = 1;
....@@ -62,12 +64,14 @@
6264 	int i;
6365 	struct tomoyo_path_info name;
6466 	struct tomoyo_path_info value;
67
+
6568 	name.name = env_name;
6669 	tomoyo_fill_path_info(&name);
6770 	value.name = env_value;
6871 	tomoyo_fill_path_info(&value);
6972 	for (i = 0; i < envc; envp++, checked++, i++) {
7073 		bool result;
74
+
7175 		if (!tomoyo_path_matches_pattern(&name, envp->name))
7276 			continue;
7377 		*checked = 1;
....@@ -113,6 +117,7 @@
113117 	bool result = true;
114118 	u8 local_checked[32];
115119 	u8 *checked;
120
+
116121 	if (argc + envc <= sizeof(local_checked)) {
117122 		checked = local_checked;
118123 		memset(local_checked, 0, sizeof(local_checked));
....@@ -131,6 +136,7 @@
131136 			/* Read. */
132137 			const char *kaddr = dump->data;
133138 			const unsigned char c = kaddr[offset++];
139
+
134140 			if (c && arg_len < TOMOYO_EXEC_TMPSIZE - 10) {
135141 				if (c == '\\') {
136142 					arg_ptr[arg_len++] = '\\';
....@@ -160,6 +166,7 @@
160166 				argv_count--;
161167 			} else if (envp_count) {
162168 				char *cp = strchr(arg_ptr, '=');
169
+
163170 				if (cp) {
164171 					*cp = '\0';
165172 					if (!tomoyo_envp(arg_ptr, cp + 1,
....@@ -182,6 +189,7 @@
182189 out:
183190 	if (result) {
184191 		int i;
192
+
185193 		/* Check not-yet-checked entries. */
186194 		for (i = 0; i < argc; i++) {
187195 			if (checked[i])
....@@ -229,6 +237,7 @@
229237 {
230238 	bool result;
231239 	struct tomoyo_path_info exe;
240
+
232241 	if (!file)
233242 		return false;
234243 	exe.name = tomoyo_realpath_from_path(&file->f_path);
....@@ -250,6 +259,7 @@
250259 static const struct tomoyo_path_info *tomoyo_get_dqword(char *start)
251260 {
252261 	char *cp = start + strlen(start) - 1;
262
+
253263 	if (cp == start || *start++ != '"' || *cp != '"')
254264 		return NULL;
255265 	*cp = '\0';
....@@ -270,6 +280,7 @@
270280 					   struct tomoyo_name_union *ptr)
271281 {
272282 	char *filename = param->data;
283
+
273284 	if (*filename == '@')
274285 		return tomoyo_parse_name_union(param, ptr);
275286 	ptr->filename = tomoyo_get_dqword(filename);
....@@ -310,6 +321,7 @@
310321 	const struct tomoyo_path_info *name;
311322 	const struct tomoyo_path_info *value;
312323 	char *cp = left + strlen(left) - 1;
324
+
313325 	if (*cp-- != ']' || *cp != '"')
314326 		goto out;
315327 	*cp = '\0';
....@@ -364,6 +376,7 @@
364376 static u8 tomoyo_condition_type(const char *word)
365377 {
366378 	u8 i;
379
+
367380 	for (i = 0; i < TOMOYO_MAX_CONDITION_KEYWORD; i++) {
368381 		if (!strcmp(word, tomoyo_condition_keyword[i]))
369382 			break;
....@@ -395,6 +408,7 @@
395408 {
396409 	struct tomoyo_condition *ptr;
397410 	bool found = false;
411
+
398412 	if (mutex_lock_interruptible(&tomoyo_policy_lock)) {
399413 		dprintk(KERN_WARNING "%u: %s failed\n", __LINE__, __func__);
400414 		ptr = NULL;
....@@ -442,12 +456,14 @@
442456 {
443457 	char * const pos = param->data;
444458 	bool flag;
459
+
445460 	if (*pos == '<') {
446461 		e->transit = tomoyo_get_domainname(param);
447462 		goto done;
448463 	}
449464 	{
450465 		char *cp = strchr(pos, ' ');
466
+
451467 		if (cp)
452468 			*cp = '\0';
453469 		flag = tomoyo_correct_path(pos) || !strcmp(pos, "keep") ||
....@@ -489,6 +505,7 @@
489505 		tomoyo_get_transit_preference(param, &e);
490506 	char * const end_of_string = start_of_string + strlen(start_of_string);
491507 	char *pos;
508
+
492509 rerun:
493510 	pos = start_of_string;
494511 	while (1) {
....@@ -498,6 +515,7 @@
498515 		char *cp;
499516 		char *right_word;
500517 		bool is_not;
518
+
501519 		if (!*left_word)
502520 			break;
503521 		/*
....@@ -622,8 +640,8 @@
622640 		}
623641 store_value:
624642 		if (!condp) {
625
-			dprintk(KERN_WARNING "%u: dry_run left=%u right=%u "
626
-				"match=%u\n", __LINE__, left, right, !is_not);
643
+			dprintk(KERN_WARNING "%u: dry_run left=%u right=%u match=%u\n",
644
+				__LINE__, left, right, !is_not);
627645 			continue;
628646 		}
629647 		condp->left = left;
....@@ -660,6 +678,7 @@
660678 	envp = (struct tomoyo_envp *) (argv + e.argc);
661679 	{
662680 		bool flag = false;
681
+
663682 		for (pos = start_of_string; pos < end_of_string; pos++) {
664683 			if (*pos)
665684 				continue;
....@@ -698,6 +717,7 @@
698717 
699718 	for (i = 0; i < TOMOYO_MAX_PATH_STAT; i++) {
700719 		struct inode *inode;
720
+
701721 		switch (i) {
702722 		case TOMOYO_PATH1:
703723 			dentry = obj->path1.dentry;
....@@ -718,6 +738,7 @@
718738 		inode = d_backing_inode(dentry);
719739 		if (inode) {
720740 			struct tomoyo_mini_stat *stat = &obj->stat[i];
741
+
721742 			stat->uid  = inode->i_uid;
722743 			stat->gid  = inode->i_gid;
723744 			stat->ino  = inode->i_ino;
....@@ -726,8 +747,7 @@
726747 			stat->rdev = inode->i_rdev;
727748 			obj->stat_valid[i] = true;
728749 		}
729
-		if (i & 1) /* i == TOMOYO_PATH1_PARENT ||
730
-			      i == TOMOYO_PATH2_PARENT */
750
+		if (i & 1) /* TOMOYO_PATH1_PARENT or TOMOYO_PATH2_PARENT */
731751 			dput(dentry);
732752 	}
733753 }
....@@ -758,6 +778,7 @@
758778 	u16 argc;
759779 	u16 envc;
760780 	struct linux_binprm *bprm = NULL;
781
+
761782 	if (!cond)
762783 		return true;
763784 	condc = cond->condc;
....@@ -780,6 +801,7 @@
780801 		const u8 right = condp->right;
781802 		bool is_bitop[2] = { false, false };
782803 		u8 j;
804
+
783805 		condp++;
784806 		/* Check argv[] and envp[] later. */
785807 		if (left == TOMOYO_ARGV_ENTRY || left == TOMOYO_ENVP_ENTRY)
....@@ -787,10 +809,11 @@
787809 		/* Check string expressions. */
788810 		if (right == TOMOYO_NAME_UNION) {
789811 			const struct tomoyo_name_union *ptr = names_p++;
812
+			struct tomoyo_path_info *symlink;
813
+			struct tomoyo_execve *ee;
814
+			struct file *file;
815
+
790816 			switch (left) {
791
-				struct tomoyo_path_info *symlink;
792
-				struct tomoyo_execve *ee;
793
-				struct file *file;
794817 			case TOMOYO_SYMLINK_TARGET:
795818 				symlink = obj ? obj->symlink_target : NULL;
796819 				if (!symlink ||
....@@ -812,6 +835,7 @@
812835 		for (j = 0; j < 2; j++) {
813836 			const u8 index = j ? right : left;
814837 			unsigned long value = 0;
838
+
815839 			switch (index) {
816840 			case TOMOYO_TASK_UID:
817841 				value = from_kuid(&init_user_ns, current_uid());
....@@ -874,31 +898,31 @@
874898 				value = S_ISVTX;
875899 				break;
876900 			case TOMOYO_MODE_OWNER_READ:
877
-				value = S_IRUSR;
901
+				value = 0400;
878902 				break;
879903 			case TOMOYO_MODE_OWNER_WRITE:
880
-				value = S_IWUSR;
904
+				value = 0200;
881905 				break;
882906 			case TOMOYO_MODE_OWNER_EXECUTE:
883
-				value = S_IXUSR;
907
+				value = 0100;
884908 				break;
885909 			case TOMOYO_MODE_GROUP_READ:
886
-				value = S_IRGRP;
910
+				value = 0040;
887911 				break;
888912 			case TOMOYO_MODE_GROUP_WRITE:
889
-				value = S_IWGRP;
913
+				value = 0020;
890914 				break;
891915 			case TOMOYO_MODE_GROUP_EXECUTE:
892
-				value = S_IXGRP;
916
+				value = 0010;
893917 				break;
894918 			case TOMOYO_MODE_OTHERS_READ:
895
-				value = S_IROTH;
919
+				value = 0004;
896920 				break;
897921 			case TOMOYO_MODE_OTHERS_WRITE:
898
-				value = S_IWOTH;
922
+				value = 0002;
899923 				break;
900924 			case TOMOYO_MODE_OTHERS_EXECUTE:
901
-				value = S_IXOTH;
925
+				value = 0001;
902926 				break;
903927 			case TOMOYO_EXEC_ARGC:
904928 				if (!bprm)
....@@ -923,6 +947,7 @@
923947 				{
924948 					u8 stat_index;
925949 					struct tomoyo_mini_stat *stat;
950
+
926951 					switch (index) {
927952 					case TOMOYO_PATH1_UID:
928953 					case TOMOYO_PATH1_GID:
....@@ -1036,12 +1061,14 @@
10361061 		if (left == TOMOYO_NUMBER_UNION) {
10371062 			/* Fetch values now. */
10381063 			const struct tomoyo_number_union *ptr = numbers_p++;
1064
+
10391065 			min_v[0] = ptr->values[0];
10401066 			max_v[0] = ptr->values[1];
10411067 		}
10421068 		if (right == TOMOYO_NUMBER_UNION) {
10431069 			/* Fetch values now. */
10441070 			const struct tomoyo_number_union *ptr = numbers_p++;
1071
+
10451072 			if (ptr->group) {
10461073 				if (tomoyo_number_matches_group(min_v[0],
10471074 								max_v[0],