From 25f3205a1a6f7a1ce1ff0a3c9b4dcaeb8ca9dd37 Mon Sep 17 00:00:00 2001
From: Thiago Macieira <thiago.macieira@trolltech.com>
Date: Fri, 28 Dec 2007 13:04:03 +0100
Subject: [PATCH] Fail if writing to the process fails

---
 src/repository.cpp |  7 +++----
 src/repository.h   |  1 +
 src/svn.cpp        | 13 +++++++++++--
 3 files changed, 15 insertions(+), 6 deletions(-)

diff --git a/src/repository.cpp b/src/repository.cpp
index 63252b5..18d145a 100644
--- a/src/repository.cpp
+++ b/src/repository.cpp
@@ -184,7 +184,6 @@ QIODevice *Repository::Transaction::addFile(const QString &path, int mode, qint6
     repository->fastImport.write("\ndata ");
     repository->fastImport.write(QByteArray::number(length));
     repository->fastImport.write("\n", 1);
-    repository->fastImport.waitForBytesWritten(0);
 #endif
 
     modifiedFiles.insert(path, fp);
@@ -243,7 +242,7 @@ void Repository::Transaction::commit()
 
     repository->fastImport.write("\n");
 
-    while (repository->fastImport.bytesToWrite() && repository->fastImport.waitForBytesWritten()) {
-        // nothing
-    }
+    while (repository->fastImport.bytesToWrite())
+        if (!repository->fastImport.waitForBytesWritten())
+            qFatal("Failed to write to process: %s", qPrintable(repository->fastImport.errorString()));
 }
diff --git a/src/repository.h b/src/repository.h
index f971345..4692080 100644
--- a/src/repository.h
+++ b/src/repository.h
@@ -77,6 +77,7 @@ private:
     QString name;
     QProcess fastImport;
     int commitCount;
+    bool processHasStarted;
 
     void startFastImport();
 
diff --git a/src/svn.cpp b/src/svn.cpp
index a32005a..e6dc519 100644
--- a/src/svn.cpp
+++ b/src/svn.cpp
@@ -228,8 +228,14 @@ svn_error_t *QIODevice_write(void *baton, const char *data, apr_size_t *len)
     QIODevice *device = reinterpret_cast<QIODevice *>(baton);
     device->write(data, *len);
 
-    if (device->bytesToWrite() > 16384)
-        device->waitForBytesWritten(0);
+    while (device->bytesToWrite() > 16*1024) {
+        int timeout = device->bytesToWrite() >= 128*1024 ? -1 : 0;
+        if (!device->waitForBytesWritten(timeout)) {
+            qFatal("Failed to write to process: %s", qPrintable(device->errorString()));
+            return svn_error_createf(APR_EOF, SVN_NO_ERROR, "Failed to write to process: %s",
+                                     qPrintable(device->errorString()));
+        }
+    }
     return SVN_NO_ERROR;
 }
 
@@ -512,6 +518,9 @@ int SvnRevision::exportDispatch(const char *key, const svn_fs_path_change_t *cha
     case Rules::Match::Export:
         return exportInternal(key, change, path_from, rev_from, current, rule);
     }
+
+    // never reached
+    return EXIT_FAILURE;
 }
 
 int SvnRevision::exportInternal(const char *key, const svn_fs_path_change_t *change,
-- 
2.45.0