1 /* Copyright (c) 2017. The SimGrid Team.
2 * All rights reserved. */
4 /* This program is free software; you can redistribute it and/or modify it
5 * under the terms of the license (GNU LGPL) which comes with this package. */
7 #include "src/surf/FileImpl.hpp"
8 #include "src/surf/StorageImpl.hpp"
10 XBT_LOG_NEW_DEFAULT_SUBCATEGORY(surf_file, surf, "Logging specific to the SURF file module");
14 FileImpl::FileImpl(sg_storage_t st, std::string path, std::string mount) : path_(path), mount_point_(mount)
16 XBT_DEBUG("\tOpen file '%s'", path.c_str());
17 location_ = st->getImpl();
18 std::map<std::string, sg_size_t>* content = location_->getContent();
19 // if file does not exist create an empty file
20 auto sz = content->find(path);
21 if (sz != content->end()) {
25 content->insert({path, size_});
26 XBT_DEBUG("File '%s' was not found, file created.", path.c_str());
30 int FileImpl::seek(sg_offset_t offset, int origin)
34 current_position_ = offset;
37 current_position_ += offset;
40 current_position_ = size_ + offset;
47 int FileImpl::unlink()
49 /* Check if the file is on this storage */
50 if (location_->getContent()->find(path_) == location_->getContent()->end()) {
51 XBT_WARN("File %s is not on disk %s. Impossible to unlink", getCname(), location_->getCname());
54 XBT_DEBUG("UNLINK %s on disk '%s'", getCname(), location_->getCname());
55 location_->usedSize_ -= size_;
57 // Remove the file from storage
58 location_->getContent()->erase(path_);
64 void FileImpl::move(std::string fullpath)
66 /* Check if the new full path is on the same mount point */
67 if (not strncmp(mount_point_.c_str(), fullpath.c_str(), mount_point_.size())) {
68 std::map<std::string, sg_size_t>* content = location_->getContent();
69 auto sz = content->find(path_);
70 if (sz != content->end()) { // src file exists
71 sg_size_t new_size = sz->second;
72 content->erase(path_);
73 std::string path = fullpath.substr(mount_point_.length(), fullpath.length());
74 content->insert({path.c_str(), new_size});
75 XBT_DEBUG("Move file from %s to %s, size '%llu'", path_.c_str(), fullpath.c_str(), new_size);
77 XBT_WARN("File %s doesn't exist", path_.c_str());
80 XBT_WARN("New full path %s is not on the same mount point: %s.", fullpath.c_str(), mount_point_.c_str());