1 files changed, 113 insertions, 0 deletions
diff --git a/src/mongo/db/storage/paths.cpp b/src/mongo/db/storage/paths.cpp
new file mode 100644
index 00000000000..cb2913c6b06
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+++ b/src/mongo/db/storage/paths.cpp
@@ -0,0 +1,113 @@
+/*    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
+    }
+}