auto import from //depot/cupcake/@135843

tools/fs_get_stats/Android.mk

@@ -0,0 +1,9 @@
+LOCAL_PATH:= $(call my-dir)
+
+include $(CLEAR_VARS)
+
+LOCAL_SRC_FILES := fs_get_stats.c
+
+LOCAL_MODULE := fs_get_stats
+
+include $(BUILD_HOST_EXECUTABLE)

tools/fs_get_stats/fs_get_stats.c

@@ -0,0 +1,64 @@
+#include <stdlib.h>
+#include <stdio.h>
+#include <string.h>
+#include <unistd.h>
+
+#include <private/android_filesystem_config.h>
+
+#define DO_DEBUG 1
+
+#define ERROR(fmt,args...) \
+	do { \
+		fprintf(stderr, "%s:%d: ERROR: " fmt,  \
+		        __FILE__, __LINE__, ##args);    \
+	} while (0)
+
+#if DO_DEBUG
+#define DEBUG(fmt,args...) \
+	do { fprintf(stderr, "DEBUG: " fmt, ##args); } while(0)
+#else
+#define DEBUG(x...)               do {} while(0)
+#endif
+
+void
+print_help(void)
+{
+	fprintf(stderr, "fs_get_stats: retrieve the target file stats "
+	        "for the specified file\n");
+	fprintf(stderr, "usage: fs_get_stats cur_perms is_dir filename\n");
+	fprintf(stderr, "\tcur_perms - The current permissions of "
+	        "the file\n");
+	fprintf(stderr, "\tis_dir    - Is filename is a dir, 1. Otherwise, 0.\n");
+	fprintf(stderr, "\tfilename  - The filename to lookup\n");
+	fprintf(stderr, "\n");
+}
+
+int
+main(int argc, const char *argv[])
+{
+	char *endptr;
+	char is_dir = 0;
+	unsigned perms = 0;
+	unsigned uid = (unsigned)-1;
+	unsigned gid = (unsigned)-1;
+
+	if (argc < 4) {
+		ERROR("Invalid arguments\n");
+		print_help();
+		exit(-1);
+	}
+
+	perms = (unsigned)strtoul(argv[1], &endptr, 0);
+	if (!endptr || (endptr == argv[1]) || (*endptr != '\0')) {
+		ERROR("current permissions must be a number. Got '%s'.\n", argv[1]);
+		exit(-1);
+	}
+
+	if (!strcmp(argv[2], "1"))
+		is_dir = 1;
+
+	fs_config(argv[3], is_dir, &uid, &gid, &perms);
+	fprintf(stdout, "%d %d 0%o\n", uid, gid, perms);
+
+	return 0;
+}