osd_file::error osd_get_full_path(std::string &dst, std::string const &path)
{
try
{
#if defined(WIN32)
std::vector<char> path_buffer(MAX_PATH);
if (::_fullpath(&path_buffer[0], path.c_str(), MAX_PATH))
{
dst = &path_buffer[0];
return osd_file::error::NONE;
}
else
{
return osd_file::error::FAILURE;
}
#else
std::unique_ptr<char, void (*)(void *)> canonical(::realpath(path.c_str(), nullptr), &std::free);
if (canonical)
{
dst = canonical.get();
return osd_file::error::NONE;
}
std::vector<char> path_buffer(PATH_MAX);
if (::realpath(path.c_str(), &path_buffer[0]))
{
dst = &path_buffer[0];
return osd_file::error::NONE;
}
else if (path[0] == PATHSEPCH)
{
dst = path;
return osd_file::error::NONE;
}
else
{
while (!::getcwd(&path_buffer[0], path_buffer.size()))
{
if (errno != ERANGE)
return errno_to_file_error(errno);
else
path_buffer.resize(path_buffer.size() * 2);
}
dst.assign(&path_buffer[0]).push_back(PATHSEPCH);
dst.append(path);
return osd_file::error::NONE;
}
#endif
}
catch (...)
{
return osd_file::error::OUT_OF_MEMORY;
}
}
void temp_fstream::open (std::ios_base::openmode mode)
{
close();
const char* tmpdir = getenv("TMPDIR");
size_t tmpdir_len = tmpdir ? std::strlen(tmpdir) : 0;
if (tmpdir_len == 0 || tmpdir_len > 4096) {
// no $TMPDIR or it's excessively long => fall back to /tmp
tmpdir = "/tmp";
tmpdir_len = 4;
}
std::vector<char> path_buffer(tmpdir_len + 18);
char* path = &path_buffer[0];
std::strcpy(path, tmpdir);
std::strcpy(path + tmpdir_len, "/git-crypt.XXXXXX");
mode_t old_umask = umask(0077);
int fd = mkstemp(path);
if (fd == -1) {
int mkstemp_errno = errno;
umask(old_umask);
throw System_error("mkstemp", "", mkstemp_errno);
}
umask(old_umask);
std::fstream::open(path, mode);
if (!std::fstream::is_open()) {
unlink(path);
::close(fd);
throw System_error("std::fstream::open", path, 0);
}
unlink(path);
::close(fd);
}
std::string absolutePath(const std::string& relative_path) {
#ifdef WIN32
// Entirely derived from LLVM's FileManager source (see getCanonicalName).
llvm::SmallString<PATH_MAX> path_buffer(relative_path);
llvm::sys::fs::make_absolute(path_buffer);
llvm::sys::path::native(path_buffer);
llvm::sys::path::remove_dots(path_buffer, true);
return path_buffer.str().str();
#else
char resolved_path[PATH_MAX];
realpath(relative_path.c_str(), resolved_path);
return std::string(resolved_path);
#endif
}
// "/some/path" => "/some/path0000012"
bool zk::create_seq(const string& path, string& seqfile) {
scoped_lock lk(m_);
string path_buffer(path.size() + 16, '\0');
int rc = zoo_create(zh_, path.c_str(), NULL, 0, &ZOO_OPEN_ACL_UNSAFE,
ZOO_EPHEMERAL | ZOO_SEQUENCE, &path_buffer[0],
path.size() + 16);
seqfile = "";
if (rc != ZOK) {
LOG(ERROR) << "failed to create: " << path << " - " << zerror(rc);
return false;
} else {
seqfile = path_buffer;
DLOG(INFO) << __func__ << " " << seqfile;
return true;
}
}
