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Complete sysfs

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This commit is contained in:
Baptiste Wicht 2014-03-02 14:33:32 +01:00
parent 0c236f1a36
commit ace9a013ad
2 changed files with 138 additions and 13 deletions
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1
kernel/include/fs/sysfs.hpp
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@ -35,6 +35,7 @@ public:
void set_value(const std::string& mount_point, const std::string& path, const std::string& value); void set_value(const std::string& mount_point, const std::string& path, const std::string& value);
void delete_value(const std::string& mount_point, const std::string& path); void delete_value(const std::string& mount_point, const std::string& path);
void delete_folder(const std::string& mount_point, const std::string& path);
} }

150
kernel/src/fs/sysfs.cpp
View File

@ -53,28 +53,44 @@ sys_folder& find_root_folder(const std::string& mount_point){
return root_folders.back(); return root_folders.back();
} }
sys_folder& find_folder(sys_folder& root, const std::vector<std::string>& path, size_t i = 0){ sys_folder& find_folder(sys_folder& root, const std::vector<std::string>& path, size_t i, size_t last){
auto& name = path[i]; auto& name = path[i];
for(auto& folder : root.folders){ for(auto& folder : root.folders){
if(folder.name == name){ if(folder.name == name){
if(i == path.size() - 1){ if(i == last - 1){
return folder; return folder;
} else { } else {
return find_folder(folder, path, i + 1); return find_folder(folder, path, i + 1, last);
} }
} }
} }
root.folders.emplace_back(name); root.folders.emplace_back(name);
if(i == path.size() - 1){ if(i == last - 1){
return root.folders.back(); return root.folders.back();
} else { } else {
return find_folder(root.folders.back(), path, i + 1); return find_folder(root.folders.back(), path, i + 1, last);
} }
} }
bool exists_folder(sys_folder& root, const std::vector<std::string>& path, size_t i, size_t last){
auto& name = path[i];
for(auto& folder : root.folders){
if(folder.name == name){
if(i == last - 1){
return true;
} else {
return exists_folder(folder, path, i + 1, last);
}
}
}
return false;
}
} //end of anonymous namespace } //end of anonymous namespace
sysfs::sysfs_file_system::sysfs_file_system(std::string mp) : mount_point(mp) { sysfs::sysfs_file_system::sysfs_file_system(std::string mp) : mount_point(mp) {
@ -85,19 +101,93 @@ sysfs::sysfs_file_system::~sysfs_file_system(){
//Nothing to delete //Nothing to delete
} }
size_t sysfs::sysfs_file_system::get_file(const std::vector<std::string>& file_path, vfs::file& file){ size_t sysfs::sysfs_file_system::get_file(const std::vector<std::string>& file_path, vfs::file& f){
//TODO auto& root_folder = find_root_folder(mount_point);
if(exists_folder(root_folder, file_path, 0, file_path.size() - 1)){
auto& folder = find_folder(root_folder, file_path, 0, file_path.size() - 1);
for(auto& file : folder.folders){
if(file.name == file_path.back()){
f.file_name = file.name;
f.directory = true;
f.hidden = false;
f.system = false;
f.size = 0;
return 0;
}
}
for(auto& file : folder.values){
if(file.name == file_path.back()){
f.file_name = file.name;
f.directory = false;
f.hidden = false;
f.system = false;
f.size = 0;
return 0;
}
}
}
return std::ERROR_NOT_EXISTS; return std::ERROR_NOT_EXISTS;
} }
size_t sysfs::sysfs_file_system::read(const std::vector<std::string>& file_path, std::string& content){ size_t sysfs::sysfs_file_system::read(const std::vector<std::string>& file_path, std::string& content){
//TODO auto& root_folder = find_root_folder(mount_point);
return 0;
if(exists_folder(root_folder, file_path, 0, file_path.size() - 1)){
auto& folder = find_folder(root_folder, file_path, 0, file_path.size() - 1);
for(auto& file : folder.values){
if(file.name == file_path.back()){
content = file.value;
return 0;
}
}
for(auto& file : folder.folders){
if(file.name == file_path.back()){
return std::ERROR_DIRECTORY;
}
}
}
return std::ERROR_NOT_EXISTS;
} }
size_t sysfs::sysfs_file_system::ls(const std::vector<std::string>& file_path, std::vector<vfs::file>& contents){ size_t sysfs::sysfs_file_system::ls(const std::vector<std::string>& file_path, std::vector<vfs::file>& contents){
//TODO auto& root_folder = find_root_folder(mount_point);
return 0;
if(exists_folder(root_folder, file_path, 0, file_path.size() - 1)){
auto& folder = find_folder(root_folder, file_path, 0, file_path.size() - 1);
for(auto& file : folder.folders){
vfs::file f;
f.file_name = file.name;
f.directory = true;
f.hidden = false;
f.system = false;
f.size = 0;
contents.push_back(f);
}
for(auto& file : folder.values){
vfs::file f;
f.file_name = file.name;
f.directory = false;
f.hidden = false;
f.system = false;
f.size = 0;
contents.push_back(f);
}
return 0;
} else {
return std::ERROR_NOT_EXISTS;
}
} }
size_t sysfs::sysfs_file_system::touch(const std::vector<std::string>& ){ size_t sysfs::sysfs_file_system::touch(const std::vector<std::string>& ){
@ -126,7 +216,7 @@ void set_value(const std::string& mount_point, const std::string& path, const st
auto last = file_path.back(); auto last = file_path.back();
file_path.pop_back(); file_path.pop_back();
auto& folder = find_folder(root_folder, file_path); auto& folder = find_folder(root_folder, file_path, 0, file_path.size());
for(auto& v : folder.values){ for(auto& v : folder.values){
if(v.name == last){ if(v.name == last){
@ -139,5 +229,39 @@ void set_value(const std::string& mount_point, const std::string& path, const st
} }
void delete_value(const std::string& mount_point, const std::string& path){ void delete_value(const std::string& mount_point, const std::string& path){
//TODO auto& root_folder = find_root_folder(mount_point);
auto file_path = std::split(path, '/');
auto last = file_path.back();
file_path.pop_back();
auto& folder = find_folder(root_folder, file_path, 0, file_path.size());
for(size_t i = 0; i < folder.values.size(); ++i){
auto& v = folder.values[i];
if(v.name == last){
folder.values.erase(i);
break;
}
}
}
void delete_folder(const std::string& mount_point, const std::string& path){
auto& root_folder = find_root_folder(mount_point);
auto file_path = std::split(path, '/');
auto last = file_path.back();
file_path.pop_back();
auto& folder = find_folder(root_folder, file_path, 0, file_path.size());
for(size_t i = 0; i < folder.folders.size(); ++i){
auto& v = folder.folders[i];
if(v.name == last){
folder.folders.erase(i);
break;
}
}
} }