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Make all of this functionality work directly on win32. Properly conditionalize
system specific stuff on HAVE_MKSTEMP git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@14051 91177308-0d34-0410-b5e6-96231b3b80d8
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@ -13,11 +13,13 @@
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//===----------------------------------------------------------------------===//
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#include "Support/FileUtilities.h"
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#include "Support/DataTypes.h"
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#include "Config/unistd.h"
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#include "Config/fcntl.h"
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#include "Config/sys/stat.h"
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#include "Config/sys/types.h"
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#include "Config/sys/stat.h"
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#include "Config/sys/mman.h"
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#include "Config/alloca.h"
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#include <cerrno>
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#include <cstdio>
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#include <fstream>
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@ -28,10 +30,10 @@ using namespace llvm;
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/// name a readable file.
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///
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bool llvm::CheckMagic(const std::string &FN, const std::string &Magic) {
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char buf[1 + Magic.size ()];
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std::ifstream f (FN.c_str ());
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f.read (buf, Magic.size ());
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buf[Magic.size ()] = '\0';
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char *buf = (char*)alloca(1 + Magic.size());
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std::ifstream f(FN.c_str());
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f.read(buf, Magic.size());
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buf[Magic.size()] = '\0';
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return Magic == buf;
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}
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@ -41,7 +43,7 @@ bool llvm::CheckMagic(const std::string &FN, const std::string &Magic) {
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bool llvm::IsArchive(const std::string &FN) {
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// Inspect the beginning of the file to see if it contains the "ar"
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// library archive format magic string.
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return CheckMagic (FN, "!<arch>\012");
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return CheckMagic(FN, "!<arch>\012");
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}
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/// IsBytecode - Returns true IFF the file named FN appears to be an LLVM
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@ -179,8 +181,11 @@ std::string llvm::getUniqueFilename(const std::string &FilenameBase) {
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strcpy(FNBuffer+FilenameBase.size(), "-XXXXXX");
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// Agree on a temporary file name to use....
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#if defined(HAVE_MKSTEMP) && !defined(_MSC_VER)
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int TempFD;
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if ((TempFD = mkstemp(FNBuffer)) == -1) {
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// FIXME: this should return an emtpy string or something and allow the
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// caller to deal with the error!
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std::cerr << "bugpoint: ERROR: Cannot create temporary file in the current "
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<< " directory!\n";
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exit(1);
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@ -189,22 +194,33 @@ std::string llvm::getUniqueFilename(const std::string &FilenameBase) {
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// We don't need to hold the temp file descriptor... we will trust that no one
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// will overwrite/delete the file while we are working on it...
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close(TempFD);
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#else
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// If we don't have mkstemp, use the old and obsolete mktemp function.
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if (mktemp(FNBuffer) == 0) {
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// FIXME: this should return an emtpy string or something and allow the
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// caller to deal with the error!
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std::cerr << "bugpoint: ERROR: Cannot create temporary file in the current "
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<< " directory!\n";
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exit(1);
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}
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#endif
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std::string Result(FNBuffer);
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delete[] FNBuffer;
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return Result;
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}
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static bool AddPermissionsBits (const std::string &Filename, mode_t bits) {
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static bool AddPermissionsBits (const std::string &Filename, int bits) {
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// Get the umask value from the operating system. We want to use it
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// when changing the file's permissions. Since calling umask() sets
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// the umask and returns its old value, we must call it a second
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// time to reset it to the user's preference.
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mode_t mask = umask (0777); // The arg. to umask is arbitrary...
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umask (mask);
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int mask = umask(0777); // The arg. to umask is arbitrary.
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umask(mask); // Restore the umask.
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// Get the file's current mode.
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struct stat st;
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if ((stat (Filename.c_str(), &st)) == -1)
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if ((stat(Filename.c_str(), &st)) == -1)
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return false;
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// Change the file to have whichever permissions bits from 'bits'
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@ -259,8 +275,8 @@ unsigned long long llvm::getFileTimestamp(const std::string &Filename) {
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/// failure, return null.
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void *llvm::ReadFileIntoAddressSpace(const std::string &Filename,
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unsigned &Length) {
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#ifdef HAVE_MMAP_FILE
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Length = getFileSize(Filename);
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#if defined(HAVE_MMAP_FILE) && !defined(_MSC_VER)
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Length = (unsigned)getFileSize(Filename);
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if ((int)Length == -1) return 0;
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FDHandle FD(open(Filename.c_str(), O_RDONLY));
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@ -287,7 +303,7 @@ void *llvm::ReadFileIntoAddressSpace(const std::string &Filename,
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/// UnmapFileFromAddressSpace - Remove the specified file from the current
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/// address space.
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void llvm::UnmapFileFromAddressSpace(void *Buffer, unsigned Length) {
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#ifdef HAVE_MMAP_FILE
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#if defined(HAVE_MMAP_FILE) && !defined(_MSC_VER)
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if (Length)
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munmap((char*)Buffer, Length);
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else
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