From 120652acc2832081117d2bbef8c98e6de012d254 Mon Sep 17 00:00:00 2001
From: Mehdi Amini <mehdi.amini@apple.com>
Date: Fri, 1 Apr 2016 00:13:31 +0000
Subject: [PATCH] Revert "Add disk_space() to llvm::fs"

This reverts commit r265074 and r265068.
Breaks windows build

From: Mehdi Amini <mehdi.amini@apple.com>

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@265080 91177308-0d34-0410-b5e6-96231b3b80d8
---
 include/llvm/Support/FileSystem.h | 12 ------------
 lib/Support/Unix/Path.inc         | 32 +------------------------------
 lib/Support/Windows/Path.inc      | 13 -------------
 3 files changed, 1 insertion(+), 56 deletions(-)

diff --git a/include/llvm/Support/FileSystem.h b/include/llvm/Support/FileSystem.h
index 3d780236f12..4a4c3f493a5 100644
--- a/include/llvm/Support/FileSystem.h
+++ b/include/llvm/Support/FileSystem.h
@@ -32,7 +32,6 @@
 #include "llvm/ADT/Twine.h"
 #include "llvm/Support/DataTypes.h"
 #include "llvm/Support/ErrorHandling.h"
-#include "llvm/Support/ErrorOr.h"
 #include "llvm/Support/TimeValue.h"
 #include <ctime>
 #include <iterator>
@@ -649,17 +648,6 @@ std::error_code identify_magic(const Twine &path, file_magic &result);
 
 std::error_code getUniqueID(const Twine Path, UniqueID &Result);
 
-/// @brief Get disk space usage information.
-///
-/// Note: Users must be careful about "Time Of Check, Time Of Use" kind of bug.
-/// Note: Windows reports results according to the quota allocated to the user.
-///
-/// @param Path Input path.
-/// @returns a space_info structure filled with the capacity, free, and
-/// available space on the device \a Path is on. A platform specific error_code
-/// is returned on error.
-ErrorOr<space_info> disk_space(const Twine &Path);
-
 /// This class represents a memory mapped file. It is based on
 /// boost::iostreams::mapped_file.
 class mapped_file_region {
diff --git a/lib/Support/Unix/Path.inc b/lib/Support/Unix/Path.inc
index 3cedf64d4b0..a80e0ddb8a1 100644
--- a/lib/Support/Unix/Path.inc
+++ b/lib/Support/Unix/Path.inc
@@ -60,24 +60,6 @@
 # define PATH_MAX 4096
 #endif
 
-#include <sys/types.h>
-#if !defined(__APPLE__) && !defined(__OpenBSD__) && !defined(__ANDROID__)
-#include <sys/statvfs.h>
-#define STATVFS statvfs
-#define STATVFS_F_FRSIZE(vfs) vfs.f_frsize
-#else
-#ifdef __OpenBSD__
-#include <sys/param.h>
-#elif defined(__ANDROID__)
-#include <sys/vfs.h>
-#else
-#include <sys/mount.h>
-#endif
-#define STATVFS statfs
-#define STATVFS_F_FRSIZE(vfs) static_cast<uint64_t>(vfs.f_bsize)
-#endif
-
-
 using namespace llvm;
 
 namespace llvm {
@@ -88,7 +70,7 @@ namespace fs {
     defined(__linux__) || defined(__CYGWIN__) || defined(__DragonFly__)
 static int
 test_dir(char ret[PATH_MAX], const char *dir, const char *bin)
-{
+{  
   struct stat sb;
   char fullpath[PATH_MAX];
 
@@ -208,18 +190,6 @@ UniqueID file_status::getUniqueID() const {
   return UniqueID(fs_st_dev, fs_st_ino);
 }
 
-ErrorOr<space_info> disk_space(const Twine &Path) {
-  struct STATVFS Vfs;
-  if (::STATVFS(Path.str().c_str(), &Vfs))
-    return std::error_code(errno, std::generic_category());
-  auto FrSize = STATVFS_F_FRSIZE(Vfs);
-  space_info SpaceInfo;
-  SpaceInfo.capacity = static_cast<uint64_t>(Vfs.f_blocks) * FrSize;
-  SpaceInfo.free = static_cast<uint64_t>(Vfs.f_bfree) * FrSize;
-  SpaceInfo.available = static_cast<uint64_t>(Vfs.f_bavail) * FrSize;
-  return SpaceInfo;
-}
-
 std::error_code current_path(SmallVectorImpl<char> &result) {
   result.clear();
 
diff --git a/lib/Support/Windows/Path.inc b/lib/Support/Windows/Path.inc
index c17c5c61b5a..98fd7b0034a 100644
--- a/lib/Support/Windows/Path.inc
+++ b/lib/Support/Windows/Path.inc
@@ -151,19 +151,6 @@ UniqueID file_status::getUniqueID() const {
   return UniqueID(VolumeSerialNumber, FileID);
 }
 
-ErrorOr<space_info> disk_space(const Twine &Path) {
-  PULARGE_INTEGER Avail, Total, Free;
-  if (!::GetDiskFreeSpaceExA(Path.str().c_str(), &Avail, &Total, &Free))
-    return mapWindowsError(::GetLastError());
-  space_info SpaceInfo;
-  SpaceInfo.capacity =
-      (static_cast<uint64_t>(Total.HighPart) << 32) + Total.LowPart;
-  SpaceInfo.Free = (static_cast<uint64_t>(Free.HighPart) << 32) + Free.LowPart;
-  SpaceInfo.available =
-      (static_cast<uint64_t>(Avail.HighPart) << 32) + Avail.LowPart;
-  return SpaceInfo;
-}
-
 TimeValue file_status::getLastAccessedTime() const {
   ULARGE_INTEGER UI;
   UI.LowPart = LastAccessedTimeLow;