Dump system settings for all users

Change-Id: Ic832b19fe698da1984876b2949c3f26990ae5076

cmds/dumpstate/dumpstate.c

@@ -174,9 +174,7 @@ static void dumpstate() {
     dump_file("LAST PANIC CONSOLE", "/data/dontpanic/apanic_console");
     dump_file("LAST PANIC THREADS", "/data/dontpanic/apanic_threads");
 
-    run_command("SYSTEM SETTINGS", 20, SU_PATH, "root", "sqlite3",
-            "/data/data/com.android.providers.settings/databases/settings.db",
-            "pragma user_version; select * from system; select * from secure; select * from global;", NULL);
+    for_each_userid(do_dump_settings, NULL);
 
     /* The following have a tendency to get wedged when wifi drivers/fw goes belly-up. */
     run_command("NETWORK INTERFACES", 10, SU_PATH, "root", "netcfg", NULL);

cmds/dumpstate/dumpstate.h

@@ -26,6 +26,7 @@
 
 typedef void (for_each_pid_func)(int, const char *);
 typedef void (for_each_tid_func)(int, int, const char *);
+typedef void (for_each_userid_func)(int);
 
 /* prints the contents of a file */
 int dump_file(const char *title, const char* path);
@@ -51,6 +52,9 @@ void for_each_pid(for_each_pid_func func, const char *header);
 /* for each thread in the system, run the specified function */
 void for_each_tid(for_each_tid_func func, const char *header);
 
+/* for each user id in the system, run the specified function */
+void for_each_userid(for_each_userid_func func, const char *header);
+
 /* Displays a blocked processes in-kernel wait channel */
 void show_wchan(int pid, int tid, const char *name);
 
@@ -60,6 +64,9 @@ void do_showmap(int pid, const char *name);
 /* Gets the dmesg output for the kernel */
 void do_dmesg();
 
+/* Dumps settings for a given user id */
+void do_dump_settings(int userid);
+
 /* Play a sound via Stagefright */
 void play_sound(const char* path);
 

cmds/dumpstate/utils.c

@@ -51,6 +51,29 @@ static const char* native_processes_to_dump[] = {
         NULL,
 };
 
+void for_each_userid(void (*func)(int), const char *header) {
+    DIR *d;
+    struct dirent *de;
+
+    if (header) printf("\n------ %s ------\n", header);
+    func(0);
+
+    if (!(d = opendir("/data/system/users"))) {
+        printf("Failed to open /data/system/users (%s)\n", strerror(errno));
+        return;
+    }
+
+    while ((de = readdir(d))) {
+        int userid;
+        if (de->d_type != DT_DIR || !(userid = atoi(de->d_name))) {
+            continue;
+        }
+        func(userid);
+    }
+
+    closedir(d);
+}
+
 static void __for_each_pid(void (*helper)(int, const char *, void *), const char *header, void *arg) {
     DIR *d;
     struct dirent *de;
@@ -175,6 +198,22 @@ out_close:
     return;
 }
 
+void do_dump_settings(int userid) {
+    char title[255];
+    char dbpath[255];
+    char sql[255];
+    sprintf(title, "SYSTEM SETTINGS (user %d)", userid);
+    if (userid == 0) {
+        strcpy(dbpath, "/data/data/com.android.providers.settings/databases/settings.db");
+        strcpy(sql, "pragma user_version; select * from system; select * from secure; select * from global;");
+    } else {
+        sprintf(dbpath, "/data/system/users/%d/settings.db", userid);
+        strcpy(sql, "pragma user_version; select * from system; select * from secure;");
+    }
+    run_command(title, 20, SU_PATH, "root", "sqlite3", dbpath, sql, NULL);
+    return;
+}
+
 void do_dmesg() {
     printf("------ KERNEL LOG (dmesg) ------\n");
     /* Get size of kernel buffer */