if reading of autobit state failed, let write fail

[apt.git] / methods / rred.cc

diff --git a/methods/rred.cc b/methods/rred.cc
index 0f938adf8648a756e1bfb64e0b255c700b8f68d3..51af3755784567aa84d47428b1f713d7ac384a81 100644 (file)
--- a/methods/rred.cc
+++ b/methods/rred.cc
@@ -10,7 +10,6 @@
 #include <apt-pkg/init.h>
 #include <apt-pkg/fileutl.h>
 #include <apt-pkg/error.h>
-#include <apt-pkg/acquire-method.h>
 #include <apt-pkg/strutl.h>
 #include <apt-pkg/hashes.h>
 #include <apt-pkg/configuration.h>
@@ -491,7 +490,11 @@ class Patch {
       for (ch = filechanges.rbegin(); ch != filechanges.rend(); ++ch) {
         std::list<struct Change>::reverse_iterator mg_i, mg_e = ch;
         while (ch->del_cnt == 0 && ch->offset == 0)
+        {
            ++ch;
+           if (unlikely(ch == filechanges.rend()))
+              return;
+        }
         line -= ch->del_cnt;
         std::string buf;
         if (ch->add_cnt > 0) {
@@ -656,6 +659,11 @@ class RredMethod : public aptMethod {
         out.Close();
         inp.Close();
 
+        if (_error->PendingError() == true) {
+           std::cerr << "FAILED to read or write files" << std::endl;
+           return false;
+        }
+
         if (Debug == true) {
            std::clog << "rred: finished file patching of " << Path  << "." << std::endl;
         }
@@ -663,7 +671,7 @@ class RredMethod : public aptMethod {
         struct stat bufbase, bufpatch;
         if (stat(Path.c_str(), &bufbase) != 0 ||
               stat(patch_name.c_str(), &bufpatch) != 0)
-           return _error->Errno("stat", _("Failed to stat"));
+           return _error->Errno("stat", _("Failed to stat %s"), Path.c_str());
 
         struct timeval times[2];
         times[0].tv_sec = bufbase.st_atime;
@@ -673,7 +681,7 @@ class RredMethod : public aptMethod {
            return _error->Errno("utimes",_("Failed to set modification time"));
 
         if (stat(Itm->DestFile.c_str(), &bufbase) != 0)
-           return _error->Errno("stat", _("Failed to stat"));
+           return _error->Errno("stat", _("Failed to stat %s"), Itm->DestFile.c_str());
 
         Res.LastModified = bufbase.st_mtime;
         Res.Size = bufbase.st_size;
@@ -695,8 +703,7 @@ int main(int argc, char **argv)
    Patch patch;
 
    if (argc <= 1) {
-      RredMethod Mth;
-      return Mth.Run();
+      return RredMethod().Run();
    }
 
    // Usage: rred -t input output diff ...