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/* Copyright 2010 10gen Inc.
*
* This program is free software: you can redistribute it and/or modify
* it under the terms of the GNU Affero General Public License, version 3,
* as published by the Free Software Foundation.
*
* 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 Affero General Public License for more details.
*
* You should have received a copy of the GNU Affero General Public License
* along with this program. If not, see <http://www.gnu.org/licenses/>.
*
* As a special exception, the copyright holders give permission to link the
* code of portions of this program with the OpenSSL library under certain
* conditions as described in each individual source file and distribute
* linked combinations including the program with the OpenSSL library. You
* must comply with the GNU Affero General Public License in all respects
* for all of the code used other than as permitted herein. If you modify
* file(s) with this exception, you may extend this exception to your
* version of the file(s), but you are not obligated to do so. If you do not
* wish to do so, delete this exception statement from your version. If you
* delete this exception statement from all source files in the program,
* then also delete it in the license file.
*/
#define MONGO_LOG_DEFAULT_COMPONENT ::mongo::logger::LogComponent::kStorage
#include "mongo/platform/basic.h"
#include "mongo/db/storage/paths.h"
#include "mongo/util/log.h"
namespace mongo {
/** from a full path */
RelativePath RelativePath::fromFullPath(boost::filesystem::path dbp, boost::filesystem::path f) {
// filesystem::path normalizes / and backslash
std::string fullpath = f.string();
std::string relative = str::after(fullpath, dbp.string());
if (relative.empty()) {
log() << "warning file is not under db path? " << fullpath << ' ' << dbp.string();
RelativePath rp;
rp._p = fullpath;
return rp;
}
if (str::startsWith(relative, "/") || str::startsWith(relative, "\\")) {
relative.erase(0, 1);
}
RelativePath rp;
rp._p = relative;
return rp;
}
dev_t getPartition(const std::string& path) {
struct stat stats;
if (stat(path.c_str(), &stats) != 0) {
uasserted(13646,
str::stream() << "stat() failed for file: " << path << " "
<< errnoWithDescription());
}
return stats.st_dev;
}
void flushMyDirectory(const boost::filesystem::path& file) {
#ifdef __linux__ // this isn't needed elsewhere
static bool _warnedAboutFilesystem = false;
// if called without a fully qualified path it asserts; that makes mongoperf fail.
// so make a warning. need a better solution longer term.
// massert(13652, str::stream() << "Couldn't find parent dir for file: " << file.string(),);
if (!file.has_branch_path()) {
log() << "warning flushMyDirectory couldn't find parent dir for file: " << file.string();
return;
}
boost::filesystem::path dir = file.branch_path(); // parent_path in new boosts
LOG(1) << "flushing directory " << dir.string();
int fd = ::open(dir.string().c_str(), O_RDONLY); // DO NOT THROW OR ASSERT BEFORE CLOSING
massert(13650,
str::stream() << "Couldn't open directory '" << dir.string()
<< "' for flushing: " << errnoWithDescription(),
fd >= 0);
if (fsync(fd) != 0) {
int e = errno;
if (e == EINVAL) { // indicates filesystem does not support synchronization
if (!_warnedAboutFilesystem) {
log() << "\tWARNING: This file system is not supported. For further information"
<< " see:" << startupWarningsLog;
log() << "\t\t\thttp://dochub.mongodb.org/core/unsupported-filesystems"
<< startupWarningsLog;
log() << "\t\tPlease notify MongoDB, Inc. if an unlisted filesystem generated "
<< "this warning." << startupWarningsLog;
_warnedAboutFilesystem = true;
}
} else {
close(fd);
massert(13651,
str::stream() << "Couldn't fsync directory '" << dir.string()
<< "': " << errnoWithDescription(e),
false);
}
}
close(fd);
#endif
}
}
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