rtc_fixup.diff

diff --git a/twrp.cpp b/twrp.cpp
index 54f3ea6..0777784 100644
--- a/twrp.cpp
+++ b/twrp.cpp
@@ -60,6 +60,56 @@ static void Print_Prop(const char *key, const char *name, void *cookie) {
        printf("%s=%s\n", key, name);
 }
 
+ #include <sys/time.h>
+#include <dirent.h>
+static void fixup_qcom_rtc_shenanigans(void) {
+       static const std::string path = "/data/system/time";
+       DIR *d = opendir(path.c_str());
+       if(!d)
+               return;
+
+       struct dirent *dt;
+       uint64_t offset = 0;
+       while((dt = readdir(d)))
+       {
+               if(dt->d_type != DT_REG)
+                       continue;
+
+               if(strncmp(dt->d_name, "ats_", 4) == 0)
+               {
+                       FILE *f = fopen((path + "/" + dt->d_name).c_str(), "r");
+                       if(f)
+                       {
+                               printf("Reading offset from file %s\n", dt->d_name);
+                               fread(&offset, sizeof(offset), 1, f);
+                               fclose(f);
+                               break;
+                       }
+               }
+       }
+
+       closedir(d);
+       
+       if(offset == 0)
+               return;
+
+       printf("got time offset %lld\n", offset);
+       
+       struct timeval tv;
+       gettimeofday(&tv, NULL);
+
+       tv.tv_sec += offset/1000;
+       tv.tv_usec += (offset%1000)*1000;
+
+       while(tv.tv_usec >= 1000000)
+       {
+               ++tv.tv_sec;
+               tv.tv_usec -= 1000000;
+       }
+       printf("setting time to %llu s and %llu us\n", tv.tv_sec, tv.tv_usec);
+       settimeofday(&tv, NULL);
+}
+
 int main(int argc, char **argv) {
        // Recovery needs to install world-readable files, so clear umask
        // set by init
@@ -245,6 +295,8 @@ int main(int argc, char **argv) {
        // Read the settings file
        DataManager::ReadSettingsFile();
 
+       fixup_qcom_rtc_shenanigans();
+
        gui_rotate(DataManager::GetIntValue(TW_ROTATION));
 
        // Run any outstanding OpenRecoveryScript