android_filesystem_config: move fs_config to libcutils (a21c29ee) · Commits · e / os / android_system_core

include/private/android_filesystem_config.h

+27 −109

Original line number	Diff line number	Diff line
		@@ -22,8 +22,6 @@
		#ifndef _ANDROID_FILESYSTEM_CONFIG_H_
		#define _ANDROID_FILESYSTEM_CONFIG_H_

		#include <string.h>
		#include <sys/stat.h>
		#include <sys/types.h>
		#include <stdint.h>

		@@ -114,6 +112,14 @@
		#define AID_SHARED_GID_END 59999 /* start of gids for apps in each user to share */

		#if !defined(EXCLUDE_FS_CONFIG_STRUCTURES)
		/*
		* Used in:
		* bionic/libc/bionic/stubs.cpp
		* external/libselinux/src/android.c
		* system/core/logd/LogStatistics.cpp
		* system/core/init/ueventd.cpp
		* system/core/init/util.cpp
		*/
		struct android_id_info {
		const char *name;
		unsigned aid;
		@@ -191,116 +197,28 @@ struct fs_path_config {
		const char *prefix;
		};

		/* Rules for directories.
		** These rules are applied based on "first match", so they
		** should start with the most specific path and work their
		** way up to the root.
		*/
		/* Rules for directories and files has moved to system/code/libcutils/fs_config.c */

		static const struct fs_path_config android_dirs[] = {
		{ 00770, AID_SYSTEM, AID_CACHE, 0, "cache" },
		{ 00771, AID_SYSTEM, AID_SYSTEM, 0, "data/app" },
		{ 00771, AID_SYSTEM, AID_SYSTEM, 0, "data/app-private" },
		{ 00771, AID_ROOT, AID_ROOT, 0, "data/dalvik-cache" },
		{ 00771, AID_SYSTEM, AID_SYSTEM, 0, "data/data" },
		{ 00771, AID_SHELL, AID_SHELL, 0, "data/local/tmp" },
		{ 00771, AID_SHELL, AID_SHELL, 0, "data/local" },
		{ 01771, AID_SYSTEM, AID_MISC, 0, "data/misc" },
		{ 00770, AID_DHCP, AID_DHCP, 0, "data/misc/dhcp" },
		{ 00771, AID_SHARED_RELRO, AID_SHARED_RELRO, 0, "data/misc/shared_relro" },
		{ 00775, AID_MEDIA_RW, AID_MEDIA_RW, 0, "data/media" },
		{ 00775, AID_MEDIA_RW, AID_MEDIA_RW, 0, "data/media/Music" },
		{ 00771, AID_SYSTEM, AID_SYSTEM, 0, "data" },
		{ 00750, AID_ROOT, AID_SHELL, 0, "sbin" },
		{ 00755, AID_ROOT, AID_SHELL, 0, "system/bin" },
		{ 00755, AID_ROOT, AID_SHELL, 0, "system/vendor" },
		{ 00755, AID_ROOT, AID_SHELL, 0, "system/xbin" },
		{ 00755, AID_ROOT, AID_ROOT, 0, "system/etc/ppp" },
		{ 00755, AID_ROOT, AID_SHELL, 0, "vendor" },
		{ 00777, AID_ROOT, AID_ROOT, 0, "sdcard" },
		{ 00755, AID_ROOT, AID_ROOT, 0, 0 },
		};
		#ifdef __cplusplus
		extern "C" {
		#endif

		/* Rules for files.
		** These rules are applied based on "first match", so they
		** should start with the most specific path and work their
		** way up to the root. Prefixes ending in * denotes wildcard
		** and will allow partial matches.
		/*
		* Used in:
		* build/tools/fs_config/fs_config.c
		* build/tools/fs_get_stats/fs_get_stats.c
		* external/genext2fs/genext2fs.c
		* external/squashfs-tools/squashfs-tools/android.c
		* system/core/cpio/mkbootfs.c
		* system/core/adb/file_sync_service.cpp
		* system/extras/ext4_utils/canned_fs_config.c
		*/
		static const struct fs_path_config android_files[] = {
		{ 00440, AID_ROOT, AID_SHELL, 0, "system/etc/init.goldfish.rc" },
		{ 00550, AID_ROOT, AID_SHELL, 0, "system/etc/init.goldfish.sh" },
		{ 00550, AID_ROOT, AID_SHELL, 0, "system/etc/init.ril" },
		{ 00550, AID_DHCP, AID_SHELL, 0, "system/etc/dhcpcd/dhcpcd-run-hooks" },
		{ 00555, AID_ROOT, AID_ROOT, 0, "system/etc/ppp/*" },
		{ 00555, AID_ROOT, AID_ROOT, 0, "system/etc/rc.*" },
		{ 00644, AID_SYSTEM, AID_SYSTEM, 0, "data/app/*" },
		{ 00644, AID_MEDIA_RW, AID_MEDIA_RW, 0, "data/media/*" },
		{ 00644, AID_SYSTEM, AID_SYSTEM, 0, "data/app-private/*" },
		{ 00644, AID_APP, AID_APP, 0, "data/data/*" },

		/* the following five files are INTENTIONALLY set-uid, but they
		* are NOT included on user builds. */
		{ 04750, AID_ROOT, AID_SHELL, 0, "system/xbin/su" },
		{ 06755, AID_ROOT, AID_ROOT, 0, "system/xbin/librank" },
		{ 06755, AID_ROOT, AID_ROOT, 0, "system/xbin/procrank" },
		{ 06755, AID_ROOT, AID_ROOT, 0, "system/xbin/procmem" },
		{ 04770, AID_ROOT, AID_RADIO, 0, "system/bin/pppd-ril" },

		/* the following files have enhanced capabilities and ARE included in user builds. */
		{ 00750, AID_ROOT, AID_SHELL, (1 << CAP_SETUID) \| (1 << CAP_SETGID), "system/bin/run-as" },

		{ 00750, AID_ROOT, AID_ROOT, 0, "system/bin/uncrypt" },
		{ 00750, AID_ROOT, AID_ROOT, 0, "system/bin/install-recovery.sh" },
		{ 00755, AID_ROOT, AID_SHELL, 0, "system/bin/*" },
		{ 00755, AID_ROOT, AID_ROOT, 0, "system/lib/valgrind/*" },
		{ 00755, AID_ROOT, AID_ROOT, 0, "system/lib64/valgrind/*" },
		{ 00755, AID_ROOT, AID_SHELL, 0, "system/xbin/*" },
		{ 00755, AID_ROOT, AID_SHELL, 0, "system/vendor/bin/*" },
		{ 00755, AID_ROOT, AID_SHELL, 0, "vendor/bin/*" },
		{ 00750, AID_ROOT, AID_SHELL, 0, "sbin/*" },
		{ 00755, AID_ROOT, AID_ROOT, 0, "bin/*" },
		{ 00750, AID_ROOT, AID_SHELL, 0, "init*" },
		{ 00750, AID_ROOT, AID_SHELL, 0, "sbin/fs_mgr" },
		{ 00640, AID_ROOT, AID_SHELL, 0, "fstab.*" },
		{ 00644, AID_ROOT, AID_ROOT, 0, 0 },
		};

		static inline void fs_config(const char *path, int dir,
		unsigned uid, unsigned gid, unsigned mode, uint64_t capabilities)
		{
		const struct fs_path_config *pc;
		int plen;
		void fs_config(const char *path, int dir,
		unsigned uid, unsigned gid, unsigned mode, uint64_t capabilities);

		if (path[0] == '/') {
		path++;
		}

		pc = dir ? android_dirs : android_files;
		plen = strlen(path);
		for(; pc->prefix; pc++){
		int len = strlen(pc->prefix);
		if (dir) {
		if(plen < len) continue;
		if(!strncmp(pc->prefix, path, len)) break;
		continue;
		}
		/* If name ends in * then allow partial matches. */
		if (pc->prefix[len -1] == '*') {
		if(!strncmp(pc->prefix, path, len - 1)) break;
		} else if (plen == len){
		if(!strncmp(pc->prefix, path, len)) break;
		#ifdef __cplusplus
		}
		}
		*uid = pc->uid;
		*gid = pc->gid;
		mode = (mode & (~07777)) \| pc->mode;
		*capabilities = pc->capabilities;

		#if 0
		fprintf(stderr,"< '%s' '%s' %d %d %o >\n",
		path, pc->prefix ? pc->prefix : "", uid, gid, *mode);
		#endif
		}

		#endif
		#endif

libcutils/fs_config.c

+0 −11

Original line number	Diff line number	Diff line
		@@ -19,23 +19,12 @@
		** by the device side of adb.
		*/

		#define EXCLUDE_FS_CONFIG_STRUCTURES

		#include <stdint.h>
		#include <string.h>
		#include <sys/stat.h>

		#include <private/android_filesystem_config.h>

		/* Temporary while EXCLUDE_FS_CONFIG_STRUCTURES is defined */
		struct fs_path_config {
		unsigned mode;
		unsigned uid;
		unsigned gid;
		uint64_t capabilities;
		const char *prefix;
		};

		/* Rules for directories.
		** These rules are applied based on "first match", so they
		** should start with the most specific path and work their