Add support to remove avb verity

jni/magiskboot/cpio.c

@@ -208,8 +208,13 @@ static void cpio_test(struct vector *v) {
 int check_verity_pattern(const char *s) {
 	int pos = 0;
 	if (s[0] == ',') ++pos;
-	if (strncmp(s + pos, "verify", 6) != 0) return -1;
+	if (strncmp(s + pos, "verify", 6) == 0)
 		pos += 6;
+	else if (strncmp(s + pos, "avb", 3) == 0)
+		pos += 3;
+	else
+		return -1;
+
 	if (s[pos] == '=') {
 		while (s[pos] != '\0' && s[pos] != ' ' && s[pos] != '\n' && s[pos] != ',') ++pos;
 	}

jni/magiskboot/dtb.c

@@ -7,11 +7,24 @@
 
 extern int check_verity_pattern(const char *s);
 
+static void print_props(const void *fdt, int node, int depth) {
+	int prop;
+	fdt_for_each_property_offset(prop, fdt, node) {
+		for (int i = 0; i < depth; ++i) printf("    ");
+		printf("  ");
+		int size;
+		const char *name;
+		const char *value = fdt_getprop_by_offset(fdt, prop, &name, &size);
+		printf("[%s]: [%s]\n", name, value);
+	}
+}
+
 static void print_subnode(const void *fdt, int parent, int depth) {
 	int node;
 	fdt_for_each_subnode(node, fdt, parent) {
 		for (int i = 0; i < depth; ++i) printf("    ");
-		printf("%d: %s\n", node, fdt_get_name(fdt, node, NULL));
+		printf("#%d: %s\n", node, fdt_get_name(fdt, node, NULL));
+		print_props(fdt, node, depth);
 		print_subnode(fdt, node, depth + 1);
 	}
 }
@@ -28,7 +41,7 @@ static int find_fstab(const void *fdt, int parent) {
 	return -1;
 }
 
-void dtb_print(const char *file) {
+void dtb_dump(const char *file) {
 	size_t size ;
 	void *dtb, *fdt;
 	fprintf(stderr, "Loading dtbs from [%s]\n", file);
@@ -38,7 +51,7 @@ void dtb_print(const char *file) {
 	for (int i = 0; i < size; ++i) {
 		if (memcmp(dtb + i, DTB_MAGIC, 4) == 0) {
 			fdt = dtb + i;
-			fprintf(stderr, "\nPrinting dtb.%04d\n\n", dtb_num++);
+			fprintf(stderr, "Dumping dtb.%04d\n\n", dtb_num++);
 			print_subnode(fdt, 0, 0);
 		}
 	}

jni/magiskboot/magiskboot.h

@@ -21,7 +21,7 @@ int parse_img(void *orig, size_t size, boot_img *boot);
 int cpio_commands(const char *command, int argc, char *argv[]);
 void comp_file(const char *method, const char *from, const char *to);
 void decomp_file(char *from, const char *to);
-void dtb_print(const char *file);
+void dtb_dump(const char *file);
 void dtb_patch(const char *file);
 
 // Compressions

jni/magiskboot/main.c

@@ -45,7 +45,7 @@ static void usage(char *arg0) {
 		"    -extract <entry> <outfile>\n"
 		"      Extract <entry> to <outfile>\n"
 		"    -test\n"
-		"      Return value: 0/stock 1/Magisk 2/other (e.g. phh, SuperSU)\n"
+		"      Return value: 0/stock 1/Magisk 2/other (phh, SuperSU, Xposed)\n"
 		"    -patch <KEEPVERITY> <KEEPFORCEENCRYPT>\n"
 		"      Patch cpio for Magisk. KEEP**** are true/false values\n"
 		"    -backup <origcpio> [SHA1]\n"
@@ -56,11 +56,13 @@ static void usage(char *arg0) {
 		"    -stocksha1\n"
 		"      Get stock boot SHA1 recorded within <incpio>\n"
 		"\n"
-		" --dtb-print <dtb>\n"
+		" --dtb-<cmd> <dtb>\n"
-		"  Print all nodes in <dtb>, for debugging\n"
+		"  Do dtb related cmds to <dtb> (modifications are done directly)\n"
-		"\n"
+		"  Supported commands:\n"
-		" --dtb-patch <dtb>\n"
+		"    -dump\n"
-		"  Search for fstab in <dtb> and remove verity checks\n"
+		"      Dump all contents from dtb for debugging\n"
+		"    -patch\n"
+		"      Search for fstab and remove verity/avb\n"
 		"\n"
 		" --compress[=method] <infile> [outfile]\n"
 		"  Compress <infile> with [method] (default: gzip), optionally to [outfile]\n"
@@ -119,8 +121,8 @@ int main(int argc, char *argv[]) {
 		repack(argv[2], argc > 3 ? argv[3] : NEW_BOOT);
 	} else if (argc > 2 && strcmp(argv[1], "--decompress") == 0) {
 		decomp_file(argv[2], argc > 3 ? argv[3] : NULL);
-	} else if (argc > 2 && strcmp(argv[1], "--dtb-print") == 0) {
+	} else if (argc > 2 && strcmp(argv[1], "--dtb-dump") == 0) {
-		dtb_print(argv[2]);
+		dtb_dump(argv[2]);
 	} else if (argc > 2 && strcmp(argv[1], "--dtb-patch") == 0) {
 		dtb_patch(argv[2]);
 	} else if (argc > 2 && strncmp(argv[1], "--compress", 10) == 0) {