//===- llvm/System/Unix/Path.cpp - Unix Path Implementation -----*- C++ -*-===//
-//
+//
// The LLVM Compiler Infrastructure
//
// This file is distributed under the University of Illinois Open Source
// License. See LICENSE.TXT for details.
-//
+//
//===----------------------------------------------------------------------===//
//
// This file implements the Unix specific portion of the Path class.
return *this;
}
-bool
+bool
Path::isValid() const {
// Check some obvious things
- if (path.empty())
+ if (path.empty())
return false;
else if (path.length() >= MAXPATHLEN)
return false;
// Check that the characters are ascii chars
size_t len = path.length();
unsigned i = 0;
- while (i < len && isascii(path[i]))
+ while (i < len && isascii(path[i]))
++i;
- return i >= len;
+ return i >= len;
}
-bool
+bool
Path::isAbsolute() const {
if (path.empty())
return false;
return path[0] == '/';
-}
+}
Path
Path::GetRootDirectory() {
Path result;
Path
Path::GetTemporaryDirectory(std::string* ErrMsg ) {
#if defined(HAVE_MKDTEMP)
- // The best way is with mkdtemp but that's not available on many systems,
+ // The best way is with mkdtemp but that's not available on many systems,
// Linux and FreeBSD have it. Others probably won't.
char pathname[MAXPATHLEN];
strcpy(pathname,"/tmp/llvm_XXXXXX");
if (0 == mkdtemp(pathname)) {
- MakeErrMsg(ErrMsg,
+ MakeErrMsg(ErrMsg,
std::string(pathname) + ": can't create temporary directory");
return Path();
}
// which is then removed and created as a directory. We prefer this over
// mktemp because of mktemp's inherent security and threading risks. We still
// have a slight race condition from the time the temporary file is created to
- // the time it is re-created as a directoy.
+ // the time it is re-created as a directoy.
char pathname[MAXPATHLEN];
strcpy(pathname, "/tmp/llvm_XXXXXX");
int fd = 0;
if (-1 == (fd = mkstemp(pathname))) {
- MakeErrMsg(ErrMsg,
+ MakeErrMsg(ErrMsg,
std::string(pathname) + ": can't create temporary directory");
return Path();
}
::close(fd);
::unlink(pathname); // start race condition, ignore errors
if (-1 == ::mkdir(pathname, S_IRWXU)) { // end race condition
- MakeErrMsg(ErrMsg,
+ MakeErrMsg(ErrMsg,
std::string(pathname) + ": can't create temporary directory");
return Path();
}
strcpy(pathname, "/tmp/llvm_XXXXXX");
char *TmpName = ::mktemp(pathname);
if (TmpName == 0) {
- MakeErrMsg(ErrMsg,
+ MakeErrMsg(ErrMsg,
std::string(TmpName) + ": can't create unique directory name");
return Path();
}
if (-1 == ::mkdir(TmpName, S_IRWXU)) {
- MakeErrMsg(ErrMsg,
+ MakeErrMsg(ErrMsg,
std::string(TmpName) + ": can't create temporary directory");
return Path();
}
// This is the worst case implementation. tempnam(3) leaks memory unless its
// on an SVID2 (or later) system. On BSD 4.3 it leaks. tmpnam(3) has thread
// issues. The mktemp(3) function doesn't have enough variability in the
- // temporary name generated. So, we provide our own implementation that
+ // temporary name generated. So, we provide our own implementation that
// increments an integer from a random number seeded by the current time. This
// should be sufficiently unique that we don't have many collisions between
// processes. Generally LLVM processes don't run very long and don't use very
sprintf(pathname, "/tmp/llvm_%010u", unsigned(num));
} while ( 0 == access(pathname, F_OK ) );
if (-1 == ::mkdir(pathname, S_IRWXU)) {
- MakeErrMsg(ErrMsg,
+ MakeErrMsg(ErrMsg,
std::string(pathname) + ": can't create temporary directory");
return Path();
}
#endif
}
-void
+void
Path::GetSystemLibraryPaths(std::vector<sys::Path>& Paths) {
#ifdef LTDL_SHLIBPATH_VAR
char* env_var = getenv(LTDL_SHLIBPATH_VAR);
GetSystemLibraryPaths(Paths);
}
-Path
+Path
Path::GetLLVMDefaultConfigDir() {
return Path("/etc/llvm/");
}
assert (false && "Could not query current working directory.");
return Path("");
}
-
+
return Path(pathname);
}
return true;
}
-std::string
+std::string
Path::getLast() const {
// Find the last slash
size_t pos = path.rfind('/');
// Get the file's current mode.
struct stat buf;
- if (0 != stat(File.toString().c_str(), &buf))
+ if (0 != stat(File.toString().c_str(), &buf))
return false;
// Change the file to have whichever permissions bits from 'bits'
// that the umask would not disable.
}
bool Path::makeReadableOnDisk(std::string* ErrMsg) {
- if (!AddPermissionBits(*this, 0444))
+ if (!AddPermissionBits(*this, 0444))
return MakeErrMsg(ErrMsg, path + ": can't make file readable");
return false;
}
if (0 != lstat(aPath.path.c_str(), &st)) {
if (S_ISLNK(st.st_mode))
continue; // dangling symlink -- ignore
- return MakeErrMsg(ErrMsg,
+ return MakeErrMsg(ErrMsg,
aPath.path + ": can't determine file object type");
}
result.insert(aPath);
}
}
-
+
closedir(direntries);
return false;
}
}
static bool createDirectoryHelper(char* beg, char* end, bool create_parents) {
-
+
if (access(beg, F_OK | R_OK | W_OK) == 0)
return false;
-
+
if (create_parents) {
-
+
char* c = end;
-
+
for (; c != beg; --c)
if (*c == '/') {
-
+
// Recurse to handling the parent directory.
- *c = '\0';
+ *c = '\0';
bool x = createDirectoryHelper(beg, c, create_parents);
*c = '/';
-
+
// Return if we encountered an error.
if (x)
return true;
-
+
break;
}
- }
-
+ }
+
return mkdir(beg, S_IRWXU | S_IRWXG) != 0;
}
// Null-terminate the last component
size_t lastchar = path.length() - 1 ;
-
+
if (pathname[lastchar] != '/')
++lastchar;
-
+
pathname[lastchar] = 0;
-
+
if (createDirectoryHelper(pathname, pathname+lastchar, create_parents))
- return MakeErrMsg(ErrMsg,
+ return MakeErrMsg(ErrMsg,
std::string(pathname) + ": can't create directory");
-
+
return false;
}
// create the file
int fd = ::open(path.c_str(), O_WRONLY|O_CREAT|O_TRUNC, 0666);
- if (fd < 0)
+ if (fd < 0)
return MakeErrMsg(ErrMsg, path + ": can't create temporary file");
::close(fd);
return false;
return true;
}
- // Note: this check catches strange situations. In all cases, LLVM should
- // only be involved in the creation and deletion of regular files. This
- // check ensures that what we're trying to erase is a regular file. It
- // effectively prevents LLVM from erasing things like /dev/null, any block
- // special file, or other things that aren't "regular" files.
+ // Note: this check catches strange situations. In all cases, LLVM should
+ // only be involved in the creation and deletion of regular files. This
+ // check ensures that what we're trying to erase is a regular file. It
+ // effectively prevents LLVM from erasing things like /dev/null, any block
+ // special file, or other things that aren't "regular" files.
if (S_ISREG(buf.st_mode)) {
if (unlink(path.c_str()) != 0)
return MakeErrMsg(ErrStr, path + ": can't destroy file");
return false;
}
-
+
if (!S_ISDIR(buf.st_mode)) {
if (ErrStr) *ErrStr = "not a file or directory";
return true;
char pathname[MAXPATHLEN];
path.copy(pathname, MAXPATHLEN);
size_t lastchar = path.length() - 1;
- if (pathname[lastchar] == '/')
+ if (pathname[lastchar] == '/')
pathname[lastchar] = 0;
else
pathname[lastchar+1] = 0;
-
+
if (rmdir(pathname) != 0)
- return MakeErrMsg(ErrStr,
+ return MakeErrMsg(ErrStr,
std::string(pathname) + ": can't erase directory");
return false;
}
bool
Path::renamePathOnDisk(const Path& newName, std::string* ErrMsg) {
if (0 != ::rename(path.c_str(), newName.c_str()))
- return MakeErrMsg(ErrMsg, std::string("can't rename '") + path + "' as '" +
+ return MakeErrMsg(ErrMsg, std::string("can't rename '") + path + "' as '" +
newName.toString() + "' ");
return false;
}
-bool
+bool
Path::setStatusInfoOnDisk(const FileStatus &si, std::string *ErrStr) const {
struct utimbuf utb;
utb.actime = si.modTime.toPosixTime();
return false;
}
-bool
+bool
sys::CopyFile(const sys::Path &Dest, const sys::Path &Src, std::string* ErrMsg){
int inFile = -1;
int outFile = -1;
inFile = ::open(Src.c_str(), O_RDONLY);
if (inFile == -1)
- return MakeErrMsg(ErrMsg, Src.toString() +
+ return MakeErrMsg(ErrMsg, Src.toString() +
": can't open source file to copy");
outFile = ::open(Dest.c_str(), O_WRONLY|O_CREAT, 0666);
if (errno != EINTR && errno != EAGAIN) {
::close(inFile);
::close(outFile);
- return MakeErrMsg(ErrMsg, Dest.toString() +
+ return MakeErrMsg(ErrMsg, Dest.toString() +
": can't write destination file: ");
}
} else {
return false;
}
-bool
+bool
Path::makeUnique(bool reuse_current, std::string* ErrMsg) {
if (reuse_current && !exists())
return false; // File doesn't exist already, just use it!
- // Append an XXXXXX pattern to the end of the file for use with mkstemp,
+ // Append an XXXXXX pattern to the end of the file for use with mkstemp,
// mktemp or our own implementation.
char *FNBuffer = (char*) alloca(path.size()+8);
path.copy(FNBuffer,path.size());
path = FNBuffer;
}
if (FCounter > 999999)
- return MakeErrMsg(ErrMsg,
+ return MakeErrMsg(ErrMsg,
path + ": can't make unique filename: too many files");
#endif
return false;
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