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Using the helper API for random number generation.

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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@201125 91177308-0d34-0410-b5e6-96231b3b80d8
This commit is contained in:
Aaron Ballman 2014-02-11 03:40:14 +00:00
parent 91b585bccc
commit bec3b4865e
3 changed files with 2 additions and 14 deletions
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1
lib/Support/Path.cpp
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@ -15,6 +15,7 @@
#include "llvm/Support/Endian.h" #include "llvm/Support/Endian.h"
#include "llvm/Support/ErrorHandling.h" #include "llvm/Support/ErrorHandling.h"
#include "llvm/Support/FileSystem.h" #include "llvm/Support/FileSystem.h"
#include "llvm/Support/Process.h"
#include <cctype> #include <cctype>
#include <cstdio> #include <cstdio>
#include <cstring> #include <cstring>

1
lib/Support/Unix/Path.inc
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@ -17,7 +17,6 @@
//===----------------------------------------------------------------------===// //===----------------------------------------------------------------------===//
#include "Unix.h" #include "Unix.h"
#include "llvm/Support/Process.h"
#include <limits.h> #include <limits.h>
#include <stdio.h> #include <stdio.h>
#if HAVE_SYS_STAT_H #if HAVE_SYS_STAT_H

14
lib/Support/Windows/Path.inc
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@ -112,25 +112,13 @@ static error_code createUniqueEntity(const Twine &model, int &result_fd,
// needed if the randomly chosen path already exists. // needed if the randomly chosen path already exists.
SmallVector<wchar_t, 128> random_path_utf16; SmallVector<wchar_t, 128> random_path_utf16;
// Get a Crypto Provider for CryptGenRandom.
HCRYPTPROV HCPC;
if (!::CryptAcquireContextW(&HCPC,
NULL,
NULL,
PROV_RSA_FULL,
CRYPT_VERIFYCONTEXT))
return windows_error(::GetLastError());
ScopedCryptContext CryptoProvider(HCPC);
retry_random_path: retry_random_path:
random_path_utf16.set_size(0); random_path_utf16.set_size(0);
for (SmallVectorImpl<wchar_t>::const_iterator i = model_utf16.begin(), for (SmallVectorImpl<wchar_t>::const_iterator i = model_utf16.begin(),
e = model_utf16.end(); e = model_utf16.end();
i != e; ++i) { i != e; ++i) {
if (*i == L'%') { if (*i == L'%') {
BYTE val = 0; unsigned val = sys::Process::GetRandomNumber();
if (!::CryptGenRandom(CryptoProvider, 1, &val))
return windows_error(::GetLastError());
random_path_utf16.push_back(L"0123456789abcdef"[val & 15]); random_path_utf16.push_back(L"0123456789abcdef"[val & 15]);
} }
else else