From 05545755676b9ff35d244e55d749a15e28bb228b Mon Sep 17 00:00:00 2001
From: Reid Spencer <rspencer@reidspencer.com>
Date: Fri, 25 Aug 2006 21:37:17 +0000
Subject: For PR797: Make the Win32 code exception free (untested/uncompiled)
 which forced some interface changes which had ripple effect. This should be
 the last of 797.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@29884 91177308-0d34-0410-b5e6-96231b3b80d8
---
 lib/System/Unix/MappedFile.inc | 10 ++++++----
 lib/System/Unix/Signals.inc    | 13 +++++++++----
 lib/System/Unix/Unix.h         |  2 +-
 3 files changed, 16 insertions(+), 9 deletions(-)

(limited to 'lib/System/Unix')

diff --git a/lib/System/Unix/MappedFile.inc b/lib/System/Unix/MappedFile.inc
index ef959ba..4dccd13 100644
--- a/lib/System/Unix/MappedFile.inc
+++ b/lib/System/Unix/MappedFile.inc
@@ -122,7 +122,7 @@ size_t MappedFile::size() const {
   return info_->Size;
 }
 
-void MappedFile::size(size_t new_size) {
+bool MappedFile::size(size_t new_size, std::string* ErrMsg) {
   assert(info_ && "MappedFile not initialized");
 
   // Take the mapping out of memory
@@ -140,12 +140,14 @@ void MappedFile::size(size_t new_size) {
   if (new_size > cur_size) {
     // Ensure we can allocate at least the idodes necessary to handle the
     // file size requested. 
-    ::lseek(info_->FD, new_size, SEEK_SET);
-    ::write(info_->FD, "\0", 1);
+    if ((off_t)-1 == ::lseek(info_->FD, new_size, SEEK_SET))
+      return MakeErrMsg(ErrMsg, "Can't lseek: ");
+    if (-1 == ::write(info_->FD, "\0", 1))
+      return MakeErrMsg(ErrMsg, "Can't write: ");
   }
 
   // Put the mapping back into memory.
-  this->map(0);
+  return this->map(ErrMsg);
 }
 
 }
diff --git a/lib/System/Unix/Signals.inc b/lib/System/Unix/Signals.inc
index e464106..35c628b 100644
--- a/lib/System/Unix/Signals.inc
+++ b/lib/System/Unix/Signals.inc
@@ -154,7 +154,7 @@ void sys::SetInterruptFunction(void (*IF)()) {
 }
 
 // RemoveFileOnSignal - The public API
-void sys::RemoveFileOnSignal(const sys::Path &Filename) {
+bool sys::RemoveFileOnSignal(const sys::Path &Filename, std::string* ErrMsg) {
   if (FilesToRemove == 0)
     FilesToRemove = new std::vector<sys::Path>;
 
@@ -162,14 +162,18 @@ void sys::RemoveFileOnSignal(const sys::Path &Filename) {
 
   std::for_each(IntSigs, IntSigsEnd, RegisterHandler);
   std::for_each(KillSigs, KillSigsEnd, RegisterHandler);
+  return false;
 }
 
 // RemoveDirectoryOnSignal - The public API
-void sys::RemoveDirectoryOnSignal(const sys::Path& path) {
+bool sys::RemoveDirectoryOnSignal(const sys::Path& path, std::string* ErrMsg) {
   // Not a directory?
   sys::FileStatus Status;
-  if (path.getFileStatus(Status) || !Status.isDir)
-    return;
+  if (path.getFileStatus(Status) || !Status.isDir) {
+    if (ErrMsg)
+      *ErrMsg = path.toString() + " is not a directory";
+    return true;
+  }
 
   if (DirectoriesToRemove == 0)
     DirectoriesToRemove = new std::vector<sys::Path>;
@@ -178,6 +182,7 @@ void sys::RemoveDirectoryOnSignal(const sys::Path& path) {
 
   std::for_each(IntSigs, IntSigsEnd, RegisterHandler);
   std::for_each(KillSigs, KillSigsEnd, RegisterHandler);
+  return false;
 }
 
 /// PrintStackTraceOnErrorSignal - When an error signal (such as SIBABRT or
diff --git a/lib/System/Unix/Unix.h b/lib/System/Unix/Unix.h
index 29730fd..c38c652 100644
--- a/lib/System/Unix/Unix.h
+++ b/lib/System/Unix/Unix.h
@@ -94,7 +94,7 @@ inline bool MakeErrMsg(
   // but, oh well, just use a generic message
   sprintf(buffer, "Error #%d", errnum);
 #endif
-  *ErrMsg = buffer;
+  *ErrMsg = prefix + buffer;
   return true;
 }
 
-- 
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