General QoL changes

native/jni/core/bootstages.cpp

@@ -131,7 +131,7 @@ void node_entry::create_module_tree(const char *module) {
 	auto full_path = get_path();
 	snprintf(buf, PATH_MAX, "%s/%s%s", MODULEROOT, module, full_path.c_str());
 
-	unique_ptr<DIR, decltype(&closedir)> dir(xopendir(buf), closedir);
+	auto dir = xopen_dir(buf);
 	if (!dir)
 		return;
 
@@ -148,7 +148,7 @@ void node_entry::create_module_tree(const char *module) {
 		return;
 	}
 
-	for (struct dirent *entry; (entry = xreaddir(dir.get()));) {
+	for (dirent *entry; (entry = xreaddir(dir.get()));) {
 		if (entry->d_name == "."sv || entry->d_name == ".."sv)
 			continue;
 		// Create new node
@@ -207,22 +207,18 @@ void node_entry::create_module_tree(const char *module) {
 }
 
 void node_entry::clone_skeleton() {
-	DIR *dir;
-	struct dirent *entry;
-
 	// Clone the structure
 	auto full_path = get_path();
-	snprintf(buf, PATH_MAX, "%s%s", MIRRDIR, full_path.c_str());
-	if (!(dir = xopendir(buf)))
-		return;
-	while ((entry = xreaddir(dir))) {
+	snprintf(buf, PATH_MAX, "%s%s", MIRRDIR, full_path.data());
+	if (auto dir = xopen_dir(buf); dir) {
+		for (dirent *entry; (entry = xreaddir(dir.get()));) {
 			if (entry->d_name == "."sv || entry->d_name == ".."sv)
 				continue;
 			// Create dummy node
 			auto dummy = new node_entry(entry->d_name, entry->d_type, IS_DUMMY);
 			insert(dummy);
 		}
-	closedir(dir);
+	} else { return; }
 
 	if (status & IS_SKEL) {
 		file_attr attr;
@@ -460,9 +456,8 @@ void remove_modules() {
 	LOGI("* Remove all modules and reboot");
 	chdir(MODULEROOT);
 	rm_rf("lost+found");
-	DIR *dir = xopendir(".");
-	struct dirent *entry;
-	while ((entry = xreaddir(dir))) {
+	auto dir = xopen_dir(".");
+	for (dirent *entry; (entry = xreaddir(dir.get()));) {
 		if (entry->d_type == DT_DIR) {
 			if (entry->d_name == "."sv || entry->d_name == ".."sv || entry->d_name == ".core"sv)
 				continue;
@@ -471,7 +466,6 @@ void remove_modules() {
 			chdir("..");
 		}
 	}
-	closedir(dir);
 	chdir("/");
 	reboot();
 }
@@ -479,9 +473,8 @@ void remove_modules() {
 static void collect_modules() {
 	chdir(MODULEROOT);
 	rm_rf("lost+found");
-	DIR *dir = xopendir(".");
-	struct dirent *entry;
-	while ((entry = xreaddir(dir))) {
+	auto dir = xopen_dir(".");
+	for (dirent *entry; (entry = xreaddir(dir.get()));) {
 		if (entry->d_type == DT_DIR) {
 			if (entry->d_name == "."sv || entry->d_name == ".."sv || entry->d_name == ".core"sv)
 				continue;
@@ -501,7 +494,6 @@ static void collect_modules() {
 			chdir("..");
 		}
 	}
-	closedir(dir);
 	chdir("/");
 }
 
@@ -575,15 +567,14 @@ static bool check_data() {
 }
 
 void unlock_blocks() {
-	DIR *dir;
-	struct dirent *entry;
 	int fd, dev, OFF = 0;
 
-	if (!(dir = xopendir("/dev/block")))
+	auto dir = xopen_dir("/dev/block");
+	if (!dir)
 		return;
-	dev = dirfd(dir);
+	dev = dirfd(dir.get());
 
-	while((entry = readdir(dir))) {
+	for (dirent *entry; (entry = readdir(dir.get()));) {
 		if (entry->d_type == DT_BLK) {
 			if ((fd = openat(dev, entry->d_name, O_RDONLY | O_CLOEXEC)) < 0)
 				continue;
@@ -592,7 +583,6 @@ void unlock_blocks() {
 			close(fd);
 		}
 	}
-	closedir(dir);
 }
 
 static bool log_dump = false;

native/jni/core/daemon.cpp

@@ -118,10 +118,10 @@ static void main_daemon() {
 
 	// Unmount pre-init patches
 	if (access(ROOTMNT, F_OK) == 0) {
-		file_readline(ROOTMNT, [](auto line) -> bool {
+		file_readline(true, ROOTMNT, [](auto line) -> bool {
 			umount2(line.data(), MNT_DETACH);
 			return true;
-		}, true);
+		});
 	}
 
 	LOGI(SHOW_VER(Magisk) " daemon started\n");

native/jni/core/scripting.cpp

@@ -26,15 +26,14 @@ void exec_script(const char *script) {
 
 void exec_common_script(const char *stage) {
 	char path[4096];
-	DIR *dir;
-	struct dirent *entry;
 	sprintf(path, SECURE_DIR "/%s.d", stage);
-	if (!(dir = xopendir(path)))
+	auto dir = xopen_dir(path);
+	if (!dir)
 		return;
 	chdir(path);
 
-	bool pfs = strcmp(stage, "post-fs-data") == 0;
-	while ((entry = xreaddir(dir))) {
+	bool pfs = stage == "post-fs-data"sv;
+	for (dirent *entry; (entry = xreaddir(dir.get()));) {
 		if (entry->d_type == DT_REG) {
 			if (access(entry->d_name, X_OK) == -1)
 				continue;
@@ -50,13 +49,12 @@ void exec_common_script(const char *stage) {
 		}
 	}
 
-	closedir(dir);
 	chdir("/");
 }
 
 void exec_module_script(const char *stage, const vector<string> &module_list) {
 	char path[4096];
-	bool pfs = strcmp(stage, "post-fs-data") == 0;
+	bool pfs = stage == "post-fs-data"sv;
 	for (auto &m : module_list) {
 		const char* module = m.c_str();
 		sprintf(path, MODULEROOT "/%s/%s.sh", module, stage);

native/jni/init/init.cpp

@@ -197,10 +197,10 @@ int main(int argc, char *argv[]) {
 		return test_main(argc, argv);
 #endif
 
-	if (argc > 1 && strcmp(argv[1], "-x") == 0) {
-		if (strcmp(argv[2], "magisk") == 0)
+	if (argc > 1 && argv[1] == "-x"sv) {
+		if (argv[2] == "magisk"sv)
 			return dump_magisk(argv[3], 0755);
-		else if (strcmp(argv[2], "manager") == 0)
+		else if (argv[2] == "manager"sv)
 			return dump_manager(argv[3], 0644);
 	}
 
@@ -208,15 +208,15 @@ int main(int argc, char *argv[]) {
 		return 1;
 	setup_klog();
 
-	if (argc > 1 && argv[1] == "selinux_setup"sv) {
-		auto init = make_unique<SecondStageInit>(argv);
-		init->start();
-	}
-
+	unique_ptr<BaseInit> init;
 	cmdline cmd{};
+
+	if (argc > 1 && argv[1] == "selinux_setup"sv) {
+		init = make_unique<SecondStageInit>(argv);
+	} else {
+		// This will also mount /sys and /proc
 		load_kernel_info(&cmd);
 
-	unique_ptr<BaseInit> init;
 		if (cmd.force_normal_boot) {
 			init = make_unique<ABFirstStageInit>(argv, &cmd);
 		} else if (cmd.skip_initramfs) {
@@ -230,6 +230,7 @@ int main(int argc, char *argv[]) {
 			else
 				init = make_unique<RootFSInit>(argv, &cmd);
 		}
+	}
 
 	// Run the main routine
 	init->start();

native/jni/init/mount.cpp

@@ -44,17 +44,15 @@ static void parse_device(devinfo *dev, const char *uevent) {
 static void collect_devices() {
 	char path[128];
 	devinfo dev{};
-	DIR *dir = xopendir("/sys/dev/block");
-	if (dir == nullptr)
-		return;
-	for (dirent *entry; (entry = readdir(dir));) {
+	if (auto dir = xopen_dir("/sys/dev/block"); dir) {
+		for (dirent *entry; (entry = readdir(dir.get()));) {
 			if (entry->d_name == "."sv || entry->d_name == ".."sv)
 				continue;
 			sprintf(path, "/sys/dev/block/%s/uevent", entry->d_name);
 			parse_device(&dev, path);
 			dev_list.push_back(dev);
 		}
-	closedir(dir);
+	}
 }
 
 static int64_t setup_block(bool write_block = true) {

native/jni/init/rootdir.cpp

@@ -426,17 +426,16 @@ static void patch_fstab(const string &fstab) {
 #define FSR "/first_stage_ramdisk"
 
 void ABFirstStageInit::prepare() {
-	DIR *dir = xopendir(FSR);
+	auto dir = xopen_dir(FSR);
 	if (!dir)
 		return;
 	string fstab(FSR "/");
-	for (dirent *de; (de = readdir(dir));) {
+	for (dirent *de; (de = xreaddir(dir.get()));) {
 		if (strstr(de->d_name, "fstab")) {
 			fstab += de->d_name;
 			break;
 		}
 	}
-	closedir(dir);
 	if (fstab.length() == sizeof(FSR))
 		return;
 
@@ -453,14 +452,13 @@ void ABFirstStageInit::prepare() {
 }
 
 void AFirstStageInit::prepare() {
-	DIR *dir = xopendir("/");
-	for (dirent *de; (de = readdir(dir));) {
+	auto dir = xopen_dir("/");
+	for (dirent *de; (de = xreaddir(dir.get()));) {
 		if (strstr(de->d_name, "fstab")) {
 			patch_fstab(de->d_name);
 			break;
 		}
 	}
-	closedir(dir);
 
 	// Move stuffs for next stage
 	xmkdir("/system", 0755);

native/jni/magiskboot/bootimg.cpp

@@ -22,14 +22,14 @@ uint32_t dyn_img_hdr::j32 = 0;
 uint64_t dyn_img_hdr::j64 = 0;
 
 static void decompress(format_t type, int fd, const void *in, size_t size) {
-	auto ptr = get_decoder(type, make_stream<fd_stream>(fd));
+	auto ptr = get_decoder(type, make_unique<fd_stream>(fd));
 	ptr->write(in, size);
 }
 
 static off_t compress(format_t type, int fd, const void *in, size_t size) {
 	auto prev = lseek(fd, 0, SEEK_CUR);
 	{
-		auto strm = get_encoder(type, make_stream<fd_stream>(fd));
+		auto strm = get_encoder(type, make_unique<fd_stream>(fd));
 		strm->write(in, size);
 	}
 	auto now = lseek(fd, 0, SEEK_CUR);

native/jni/magiskboot/compress.cpp

@@ -57,7 +57,7 @@ protected:
 		ENCODE
 	} mode;
 
-	gz_strm(mode_t mode, sFILE &&fp) : cpr_stream(std::move(fp)), mode(mode) {
+	gz_strm(mode_t mode, stream_ptr &&base) : cpr_stream(std::move(base)), mode(mode) {
 		switch(mode) {
 			case DECODE:
 				inflateInit2(&strm, 15 | 16);
@@ -99,12 +99,12 @@ private:
 
 class gz_decoder : public gz_strm {
 public:
-	explicit gz_decoder(sFILE &&fp) : gz_strm(DECODE, std::move(fp)) {};
+	explicit gz_decoder(stream_ptr &&base) : gz_strm(DECODE, std::move(base)) {};
 };
 
 class gz_encoder : public gz_strm {
 public:
-	explicit gz_encoder(sFILE &&fp) : gz_strm(ENCODE, std::move(fp)) {};
+	explicit gz_encoder(stream_ptr &&base) : gz_strm(ENCODE, std::move(base)) {};
 };
 
 class bz_strm : public cpr_stream {
@@ -131,7 +131,7 @@ protected:
 		ENCODE
 	} mode;
 
-	bz_strm(mode_t mode, sFILE &&fp) : cpr_stream(std::move(fp)), mode(mode) {
+	bz_strm(mode_t mode, stream_ptr &&base) : cpr_stream(std::move(base)), mode(mode) {
 		switch(mode) {
 			case DECODE:
 				BZ2_bzDecompressInit(&strm, 0, 0);
@@ -173,12 +173,12 @@ private:
 
 class bz_decoder : public bz_strm {
 public:
-	explicit bz_decoder(sFILE &&fp) : bz_strm(DECODE, std::move(fp)) {};
+	explicit bz_decoder(stream_ptr &&base) : bz_strm(DECODE, std::move(base)) {};
 };
 
 class bz_encoder : public bz_strm {
 public:
-	explicit bz_encoder(sFILE &&fp) : bz_strm(ENCODE, std::move(fp)) {};
+	explicit bz_encoder(stream_ptr &&base) : bz_strm(ENCODE, std::move(base)) {};
 };
 
 class lzma_strm : public cpr_stream {
@@ -199,8 +199,8 @@ protected:
 		ENCODE_LZMA
 	} mode;
 
-	lzma_strm(mode_t mode, sFILE &&fp)
-	: cpr_stream(std::move(fp)), mode(mode), strm(LZMA_STREAM_INIT) {
+	lzma_strm(mode_t mode, stream_ptr &&base)
+	: cpr_stream(std::move(base)), mode(mode), strm(LZMA_STREAM_INIT) {
 		lzma_options_lzma opt;
 
 		// Initialize preset
@@ -247,22 +247,22 @@ private:
 
 class lzma_decoder : public lzma_strm {
 public:
-	explicit lzma_decoder(sFILE &&fp) : lzma_strm(DECODE, std::move(fp)) {}
+	explicit lzma_decoder(stream_ptr &&base) : lzma_strm(DECODE, std::move(base)) {}
 };
 
 class xz_encoder : public lzma_strm {
 public:
-	explicit xz_encoder(sFILE &&fp) : lzma_strm(ENCODE_XZ, std::move(fp)) {}
+	explicit xz_encoder(stream_ptr &&base) : lzma_strm(ENCODE_XZ, std::move(base)) {}
 };
 
 class lzma_encoder : public lzma_strm {
 public:
-	explicit lzma_encoder(sFILE &&fp) : lzma_strm(ENCODE_LZMA, std::move(fp)) {}
+	explicit lzma_encoder(stream_ptr &&base) : lzma_strm(ENCODE_LZMA, std::move(base)) {}
 };
 
 class LZ4F_decoder : public cpr_stream {
 public:
-	explicit LZ4F_decoder(sFILE &&fp) : cpr_stream(std::move(fp)), outbuf(nullptr) {
+	explicit LZ4F_decoder(stream_ptr &&base) : cpr_stream(std::move(base)), outbuf(nullptr) {
 		LZ4F_createDecompressionContext(&ctx, LZ4F_VERSION);
 	}
 
@@ -317,8 +317,8 @@ private:
 
 class LZ4F_encoder : public cpr_stream {
 public:
-	explicit LZ4F_encoder(sFILE &&fp)
-	: cpr_stream(std::move(fp)), outbuf(nullptr), outCapacity(0) {
+	explicit LZ4F_encoder(stream_ptr &&base)
+	: cpr_stream(std::move(base)), outbuf(nullptr), outCapacity(0) {
 		LZ4F_createCompressionContext(&ctx, LZ4F_VERSION);
 	}
 
@@ -378,8 +378,8 @@ private:
 
 class LZ4_decoder : public cpr_stream {
 public:
-	explicit LZ4_decoder(sFILE &&fp)
-	: cpr_stream(std::move(fp)), out_buf(new char[LZ4_UNCOMPRESSED]),
+	explicit LZ4_decoder(stream_ptr &&base)
+	: cpr_stream(std::move(base)), out_buf(new char[LZ4_UNCOMPRESSED]),
 	buffer(new char[LZ4_COMPRESSED]), init(false), block_sz(0), buf_off(0) {}
 
 	~LZ4_decoder() override {
@@ -439,8 +439,8 @@ private:
 
 class LZ4_encoder : public cpr_stream {
 public:
-	explicit LZ4_encoder(sFILE &&fp)
-	: cpr_stream(std::move(fp)), outbuf(new char[LZ4_COMPRESSED]), buf(new char[LZ4_UNCOMPRESSED]),
+	explicit LZ4_encoder(stream_ptr &&base)
+	: cpr_stream(std::move(base)), outbuf(new char[LZ4_COMPRESSED]), buf(new char[LZ4_UNCOMPRESSED]),
 	init(false), buf_off(0), in_total(0) {}
 
 	int write(const void *in, size_t size) override {
@@ -500,38 +500,38 @@ private:
 	unsigned in_total;
 };
 
-stream_ptr get_encoder(format_t type, sFILE &&fp) {
+stream_ptr get_encoder(format_t type, stream_ptr &&base) {
 	switch (type) {
 		case XZ:
-			return make_unique<xz_encoder>(std::move(fp));
+			return make_unique<xz_encoder>(std::move(base));
 		case LZMA:
-			return make_unique<lzma_encoder>(std::move(fp));
+			return make_unique<lzma_encoder>(std::move(base));
 		case BZIP2:
-			return make_unique<bz_encoder>(std::move(fp));
+			return make_unique<bz_encoder>(std::move(base));
 		case LZ4:
-			return make_unique<LZ4F_encoder>(std::move(fp));
+			return make_unique<LZ4F_encoder>(std::move(base));
 		case LZ4_LEGACY:
-			return make_unique<LZ4_encoder>(std::move(fp));
+			return make_unique<LZ4_encoder>(std::move(base));
 		case GZIP:
 		default:
-			return make_unique<gz_encoder>(std::move(fp));
+			return make_unique<gz_encoder>(std::move(base));
 	}
 }
 
-stream_ptr get_decoder(format_t type, sFILE &&fp) {
+stream_ptr get_decoder(format_t type, stream_ptr &&base) {
 	switch (type) {
 		case XZ:
 		case LZMA:
-			return make_unique<lzma_decoder>(std::move(fp));
+			return make_unique<lzma_decoder>(std::move(base));
 		case BZIP2:
-			return make_unique<bz_decoder>(std::move(fp));
+			return make_unique<bz_decoder>(std::move(base));
 		case LZ4:
-			return make_unique<LZ4F_decoder>(std::move(fp));
+			return make_unique<LZ4F_decoder>(std::move(base));
 		case LZ4_LEGACY:
-			return make_unique<LZ4_decoder>(std::move(fp));
+			return make_unique<LZ4_decoder>(std::move(base));
 		case GZIP:
 		default:
-			return make_unique<gz_decoder>(std::move(fp));
+			return make_unique<gz_decoder>(std::move(base));
 	}
 }
 
@@ -573,7 +573,7 @@ void decompress(char *infile, const char *outfile) {
 			}
 
 			FILE *out_fp = outfile == "-"sv ? stdout : xfopen(outfile, "we");
-			strm = get_decoder(type, make_sFILE(out_fp));
+			strm = get_decoder(type, make_unique<fp_stream>(out_fp));
 			if (ext) *ext = '.';
 		}
 		if (strm->write(buf, len) < 0)
@@ -614,7 +614,7 @@ void compress(const char *method, const char *infile, const char *outfile) {
 		out_fp = outfile == "-"sv ? stdout : xfopen(outfile, "we");
 	}
 
-	auto strm = get_encoder(it->second, make_sFILE(out_fp));
+	auto strm = get_encoder(it->second, make_unique<fp_stream>(out_fp));
 
 	char buf[4096];
 	size_t len;

native/jni/magiskboot/compress.h

@@ -4,9 +4,9 @@
 
 #include "format.h"
 
-stream_ptr get_encoder(format_t type, sFILE &&fp);
+stream_ptr get_encoder(format_t type, stream_ptr &&base);
 
-stream_ptr get_decoder(format_t type, sFILE &&fp);
+stream_ptr get_decoder(format_t type, stream_ptr &&base);
 
 void compress(const char *method, const char *infile, const char *outfile);
 

native/jni/magiskboot/ramdisk.cpp

@@ -244,7 +244,7 @@ void magisk_cpio::compress() {
 
 	uint8_t *data;
 	size_t len;
-	auto strm = make_stream(get_encoder(XZ, make_stream<byte_stream>(data, len)));
+	auto strm = make_stream_fp(get_encoder(XZ, make_unique<byte_stream>(data, len)));
 	dump(strm.release());
 
 	entries.clear();
@@ -264,7 +264,7 @@ void magisk_cpio::decompress() {
 	char *data;
 	size_t len;
 	{
-		auto strm = get_decoder(XZ, make_stream<byte_stream>(data, len));
+		auto strm = get_decoder(XZ, make_unique<byte_stream>(data, len));
 		strm->write(it->second->data, it->second->filesize);
 	}
 

native/jni/magiskhide/hide_utils.cpp

@@ -183,7 +183,7 @@ bool init_list() {
 
 	// Migrate old hide list into database
 	if (access(LEGACY_LIST, R_OK) == 0) {
-		file_readline(LEGACY_LIST, [](string_view s) -> bool {
+		file_readline(true, LEGACY_LIST, [](string_view s) -> bool {
 			add_list(s.data());
 			return true;
 		});

native/jni/magiskpolicy/policydb.cpp

@@ -178,7 +178,7 @@ int dump_policydb(const char *file) {
 	size_t len;
 
 	{
-		auto fp = make_stream<byte_stream>(data, len);
+		auto fp = make_stream_fp<byte_stream>(data, len);
 		struct policy_file pf;
 		policy_file_init(&pf);
 		pf.type = PF_USE_STDIO;

native/jni/magiskpolicy/statement.cpp

@@ -416,10 +416,10 @@ void parse_statement(const char *statement) {
 }
 
 void load_rule_file(const char *file) {
-	file_readline(file, [](string_view line) -> bool {
+	file_readline(true, file, [](string_view line) -> bool {
 		if (line.empty() || line[0] == '#')
 			return true;
 		parse_statement(line.data());
 		return true;
-	}, true);
+	});
 }

native/jni/utils/file.cpp

@@ -1,8 +1,4 @@
-/* file.cpp - Contains all files related utilities
- */
-
 #include <sys/sendfile.h>
-#include <sys/mman.h>
 #include <linux/fs.h>
 #include <stdlib.h>
 #include <fcntl.h>
@@ -359,7 +355,7 @@ void write_zero(int fd, size_t size) {
 	}
 }
 
-void file_readline(const char *file, const function<bool (string_view)> &fn, bool trim) {
+void file_readline(bool trim, const char *file, const std::function<bool(std::string_view)> &fn) {
 	FILE *fp = xfopen(file, "re");
 	if (fp == nullptr)
 		return;
@@ -384,7 +380,7 @@ void file_readline(const char *file, const function<bool (string_view)> &fn, boo
 }
 
 void parse_prop_file(const char *file, const function<bool (string_view, string_view)> &fn) {
-	file_readline(file, [&](string_view line_view) -> bool {
+	file_readline(true, file, [&](string_view line_view) -> bool {
 		char *line = (char *) line_view.data();
 		if (line[0] == '#')
 			return true;
@@ -393,7 +389,7 @@ void parse_prop_file(const char *file, const function<bool (string_view, string_
 			return true;
 		*eql = '\0';
 		return fn(line, eql + 1);
-	}, true);
+	});
 }
 
 void parse_mnt(const char *file, const function<bool (mntent*)> &fn) {

native/jni/utils/files.h

@@ -1,17 +1,16 @@
 #pragma once
 
+#include <sys/mman.h>
+#include <sys/stat.h>
 #include <mntent.h>
 #include <functional>
 #include <string_view>
 
+#include "xwrap.h"
+
 #define do_align(p, a)  (((p) + (a) - 1) / (a) * (a))
 #define align_off(p, a) (do_align(p, a) - (p))
 
-using sFILE = std::unique_ptr<FILE, decltype(&fclose)>;
-static inline sFILE make_sFILE(FILE *fp = nullptr) {
-	return sFILE(fp, fclose);
-}
-
 struct file_attr {
 	struct stat st;
 	char con[128];
@@ -36,12 +35,15 @@ void clone_attr(const char *source, const char *target);
 void fd_full_read(int fd, void **buf, size_t *size);
 void full_read(const char *filename, void **buf, size_t *size);
 void write_zero(int fd, size_t size);
-
-void file_readline(const char *file, const std::function<bool (std::string_view)> &fn, bool trim = false);
-void parse_prop_file(const char *file, const std::function
-		<bool(std::string_view, std::string_view)> &fn);
+void file_readline(bool trim, const char *file, const std::function<bool(std::string_view)> &fn);
+static inline void file_readline(const char *file,
+		const std::function<bool(std::string_view)> &fn) {
+	file_readline(false, file, fn);
+}
+void parse_prop_file(const char *file,
+		const std::function<bool(std::string_view, std::string_view)> &fn);
 void *__mmap(const char *filename, size_t *size, bool rw);
-void frm_rf(int dirfd, std::initializer_list<const char *> excl = std::initializer_list<const char *>());
+void frm_rf(int dirfd, std::initializer_list<const char *> excl = {});
 void clone_dir(int src, int dest, bool overwrite = true);
 void parse_mnt(const char *file, const std::function<bool(mntent*)> &fn);
 
@@ -80,3 +82,22 @@ void mmap_rw(const char *filename, B &buf, L &sz) {
 	buf = (B) __mmap(filename, &__sz, true);
 	sz = __sz;
 }
+
+using sFILE = std::unique_ptr<FILE, decltype(&fclose)>;
+using sDIR = std::unique_ptr<DIR, decltype(&closedir)>;
+
+static inline sDIR open_dir(const char *path) {
+	return sDIR(opendir(path), closedir);
+}
+
+static inline sDIR xopen_dir(const char *path) {
+	return sDIR(xopendir(path), closedir);
+}
+
+static inline sFILE open_file(const char *path, const char *mode) {
+	return sFILE(fopen(path, mode), fclose);
+}
+
+static inline sFILE xopen_file(const char *path, const char *mode) {
+	return sFILE(xfopen(path, mode), fclose);
+}

native/jni/utils/include/stream.h

@@ -5,17 +5,6 @@
 
 #include "../files.h"
 
-class stream;
-
-using stream_ptr = std::unique_ptr<stream>;
-
-sFILE make_stream(stream_ptr &&strm);
-
-template <class T, class... Args>
-sFILE make_stream(Args &&... args) {
-	return make_stream(stream_ptr(new T(std::forward<Args>(args)...)));
-}
-
 class stream {
 public:
 	virtual int read(void *buf, size_t len);
@@ -24,35 +13,22 @@ public:
 	virtual ~stream() = default;
 };
 
-// Delegates all operations to the base FILE pointer
+using stream_ptr = std::unique_ptr<stream>;
+
+// Delegates all operations to base stream
 class filter_stream : public stream {
 public:
-	filter_stream(sFILE &&fp = make_sFILE()) : fp(std::move(fp)) {}
+	filter_stream(stream_ptr &&base) : base(std::move(base)) {}
 
 	int read(void *buf, size_t len) override;
 	int write(const void *buf, size_t len) override;
 
-	void set_base(sFILE &&f);
-	template <class T, class... Args >
-	void set_base(Args&&... args) {
-		set_base(make_stream<T>(std::forward<Args>(args)...));
-	}
-
 protected:
-	sFILE fp;
-};
-
-// Handy interface for classes that need custom seek logic
-class seekable_stream : public stream {
-protected:
-	size_t _pos = 0;
-
-	off_t seek_pos(off_t off, int whence);
-	virtual size_t end_pos() = 0;
+	stream_ptr base;
 };
 
 // Byte stream that dynamically allocates memory
-class byte_stream : public seekable_stream {
+class byte_stream : public stream {
 public:
 	byte_stream(uint8_t *&buf, size_t &len);
 	template <class byte>
@@ -64,10 +40,10 @@ public:
 private:
 	uint8_t *&_buf;
 	size_t &_len;
+	size_t _pos = 0;
 	size_t _cap = 0;
 
 	void resize(size_t new_pos, bool zero = false);
-	size_t end_pos() final { return _len; }
 };
 
 // File stream but does not close the file descriptor at any time
@@ -81,3 +57,28 @@ public:
 private:
 	int fd;
 };
+
+/* ****************************************
+ * Bridge between stream class and C stdio
+ * ****************************************/
+
+// sFILE -> stream_ptr
+class fp_stream final : public stream {
+public:
+	fp_stream(FILE *fp = nullptr) : fp(fp, fclose) {}
+	fp_stream(sFILE &&fp) : fp(std::move(fp)) {}
+	int read(void *buf, size_t len) override;
+	int write(const void *buf, size_t len) override;
+	off_t seek(off_t off, int whence) override;
+
+private:
+	sFILE fp;
+};
+
+// stream_ptr -> sFILE
+sFILE make_stream_fp(stream_ptr &&strm);
+
+template <class T, class... Args>
+sFILE make_stream_fp(Args &&... args) {
+	return make_stream_fp(stream_ptr(new T(std::forward<Args>(args)...)));
+}

native/jni/utils/include/utils.h

@@ -1,14 +1,5 @@
 #pragma once
 
-#include <sys/socket.h>
-#include <sys/stat.h>
-#include <sys/mman.h>
-#include <stdio.h>
-#include <dirent.h>
-#include <pthread.h>
-#include <poll.h>
-#include <mntent.h>
-
 #include "../missing.h"
 #include "../xwrap.h"
 #include "../files.h"

native/jni/utils/misc.h

@@ -1,5 +1,6 @@
 #pragma once
 
+#include <pthread.h>
 #include <string>
 #include <functional>
 #include <string_view>

native/jni/utils/selinux.cpp

@@ -207,11 +207,10 @@ void restore_rootcon() {
 	setfilecon(MIRRDIR, ROOT_CON);
 	setfilecon(BLOCKDIR, ROOT_CON);
 
-	struct dirent *entry;
-	DIR *dir = xopendir("/sbin");
-	int dfd = dirfd(dir);
+	auto dir = xopen_dir("/sbin");
+	int dfd = dirfd(dir.get());
 
-	while ((entry = xreaddir(dir))) {
+	for (dirent *entry; (entry = xreaddir(dir.get()));) {
 		if (entry->d_name == "."sv || entry->d_name == ".."sv)
 			continue;
 		setfilecon_at(dfd, entry->d_name, ROOT_CON);
@@ -220,6 +219,4 @@ void restore_rootcon() {
 	setfilecon("/sbin/magisk.bin", MAGISK_CON);
 	setfilecon("/sbin/magisk", MAGISK_CON);
 	setfilecon("/sbin/magiskinit", MAGISK_CON);
-
-	closedir(dir);
 }

native/jni/utils/stream.cpp

@@ -23,7 +23,7 @@ static int strm_close(void *v) {
 	return 0;
 }
 
-sFILE make_stream(stream_ptr &&strm) {
+sFILE make_stream_fp(stream_ptr &&strm) {
 	sFILE fp(funopen(strm.release(), strm_read, strm_write, strm_seek, strm_close), fclose);
 	setbuf(fp.get(), nullptr);
 	return fp;
@@ -44,29 +44,24 @@ off_t stream::seek(off_t off, int whence) {
 	return -1;
 }
 
-int filter_stream::read(void *buf, size_t len) {
+int fp_stream::read(void *buf, size_t len) {
 	return fread(buf, 1, len, fp.get());
 }
 
-int filter_stream::write(const void *buf, size_t len) {
+int fp_stream::write(const void *buf, size_t len) {
 	return fwrite(buf, 1, len, fp.get());
 }
 
-void filter_stream::set_base(sFILE &&f) {
-	fp = std::move(f);
+off_t fp_stream::seek(off_t off, int whence) {
+	return fseek(fp.get(), off, whence);
 }
 
-off_t seekable_stream::seek_pos(off_t off, int whence) {
-	switch (whence) {
-		case SEEK_CUR:
-			return _pos + off;
-		case SEEK_END:
-			return end_pos() + off;
-		case SEEK_SET:
-			return off;
-		default:
-			return -1;
-	}
+int filter_stream::read(void *buf, size_t len) {
+	return base->read(buf, len);
+}
+
+int filter_stream::write(const void *buf, size_t len) {
+	return base->write(buf, len);
 }
 
 byte_stream::byte_stream(uint8_t *&buf, size_t &len) : _buf(buf), _len(len) {
@@ -89,9 +84,20 @@ int byte_stream::write(const void *buf, size_t len) {
 }
 
 off_t byte_stream::seek(off_t off, int whence) {
-	off_t np = seek_pos(off, whence);
-	if (np < 0)
+	off_t np;
+	switch (whence) {
+		case SEEK_CUR:
+			np = _pos + off;
+			break;
+		case SEEK_END:
+			np = _len + off;
+			break;
+		case SEEK_SET:
+			np = off;
+			break;
+		default:
 			return -1;
+	}
 	resize(np, true);
 	_pos = np;
 	return np;

native/jni/utils/xwrap.cpp

@@ -1,17 +1,6 @@
-/* xwrap.cpp - wrappers around existing library functions.
- *
- * Functions with the x prefix are wrappers that either succeed or log the
- * error message. They usually have the same arguments and return value
- * as the function they wrap.
- *
- */
-
 #include <sched.h>
-#include <stdio.h>
 #include <stdlib.h>
 #include <unistd.h>
-#include <fcntl.h>
-#include <dirent.h>
 #include <errno.h>
 #include <pthread.h>
 #include <sys/socket.h>

native/jni/utils/xwrap.h

@@ -1,5 +1,10 @@
 #pragma once
 
+#include <dirent.h>
+#include <stdio.h>
+#include <poll.h>
+#include <fcntl.h>
+
 FILE *xfopen(const char *pathname, const char *mode);
 FILE *xfdopen(int fd, const char *mode);
 int xopen(const char *pathname, int flags);