You've already forked mariadb-columnstore-engine
mirror of
https://github.com/mariadb-corporation/mariadb-columnstore-engine.git
synced 2025-11-03 17:13:17 +03:00
116 lines
2.7 KiB
C++
116 lines
2.7 KiB
C++
/* Copyright (C) 2014 InfiniDB, Inc.
|
|
|
|
This program is free software; you can redistribute it and/or
|
|
modify it under the terms of the GNU General Public License
|
|
as published by the Free Software Foundation; version 2 of
|
|
the License.
|
|
|
|
This program is distributed in the hope that it will be useful,
|
|
but WITHOUT ANY WARRANTY; without even the implied warranty of
|
|
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
|
|
GNU General Public License for more details.
|
|
|
|
You should have received a copy of the GNU General Public License
|
|
along with this program; if not, write to the Free Software
|
|
Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston,
|
|
MA 02110-1301, USA. */
|
|
|
|
#include <unistd.h>
|
|
#include <string>
|
|
//#define NDEBUG
|
|
#include <cassert>
|
|
#include <climits>
|
|
using namespace std;
|
|
|
|
#include <boost/tokenizer.hpp>
|
|
#include <boost/filesystem.hpp>
|
|
using namespace boost;
|
|
namespace fs = boost::filesystem;
|
|
|
|
#include "fsutils.h"
|
|
#include "exceptclasses.h"
|
|
|
|
namespace
|
|
{
|
|
const string resolveInDir(const string& dir, const string& name)
|
|
{
|
|
idbassert(!dir.empty() && !name.empty());
|
|
string ret;
|
|
fs::path path(dir);
|
|
|
|
if (!fs::exists(path))
|
|
return ret;
|
|
|
|
idbassert(fs::exists(path));
|
|
path /= name;
|
|
|
|
if (!fs::exists(path))
|
|
return ret;
|
|
|
|
idbassert(fs::exists(path));
|
|
|
|
if (!fs::is_symlink(path))
|
|
return ret;
|
|
|
|
idbassert(fs::is_symlink(path));
|
|
char* realname = (char*)alloca(PATH_MAX + 1);
|
|
ssize_t realnamelen = readlink(path.string().c_str(), realname, PATH_MAX);
|
|
|
|
if (realnamelen <= 0)
|
|
return ret;
|
|
|
|
realname[realnamelen] = 0;
|
|
fs::path linkname(realname);
|
|
fs::path realpath("/dev");
|
|
realpath /= linkname.filename();
|
|
ret = realpath.string();
|
|
return ret;
|
|
}
|
|
|
|
inline const string label2dev(const string& name)
|
|
{
|
|
return resolveInDir("/dev/disk/by-label", name);
|
|
}
|
|
|
|
inline const string uuid2dev(const string& name)
|
|
{
|
|
return resolveInDir("/dev/disk/by-uuid", name);
|
|
}
|
|
|
|
} // namespace
|
|
|
|
namespace fsutils
|
|
{
|
|
const string symname2devname(const string& sympath)
|
|
{
|
|
string ret;
|
|
typedef boost::tokenizer<boost::char_separator<char> > tokenizer;
|
|
boost::char_separator<char> sep("=");
|
|
tokenizer tokens(sympath, sep);
|
|
tokenizer::iterator tok_iter = tokens.begin();
|
|
|
|
idbassert(tok_iter != tokens.end());
|
|
string symtype = *tok_iter;
|
|
|
|
if (symtype != "LABEL" && symtype != "UUID")
|
|
return ret;
|
|
|
|
idbassert(symtype == "LABEL" || symtype == "UUID");
|
|
|
|
++tok_iter;
|
|
idbassert(tok_iter != tokens.end());
|
|
string symname = *tok_iter;
|
|
|
|
++tok_iter;
|
|
idbassert(tok_iter == tokens.end());
|
|
|
|
if (symtype == "LABEL")
|
|
ret = label2dev(symname);
|
|
else if (symtype == "UUID")
|
|
ret = uuid2dev(symname);
|
|
|
|
return ret;
|
|
}
|
|
|
|
} // namespace fsutils
|