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/*
* Licensed to the Apache Software Foundation (ASF) under one
* or more contributor license agreements. See the NOTICE file
* distributed with this work for additional information
* regarding copyright ownership. The ASF licenses this file
* to you under the Apache License, Version 2.0 (the
* "License"); you may not use this file except in compliance
* with the License. You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing,
* software distributed under the License is distributed on an
* "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
* KIND, either express or implied. See the License for the
* specific language governing permissions and limitations
* under the License.
*/
/**
* \file JournalDirectory.cpp
*/
#include "JournalDirectory.h"
#include "JournalError.h"
#include <cstring>
#include <dirent.h>
#include <errno.h>
#include <sstream>
#include <unistd.h>
#include <sys/stat.h>
namespace qpid {
namespace asyncStore {
namespace jrnl2 {
JournalDirectory::JournalDirectory(const std::string& fqName) :
m_fqName(fqName),
m_verified(false)
{}
const
std::string JournalDirectory::getFqName() const
{
return m_fqName;
}
void
JournalDirectory::setFqName(const std::string newFqName,
const bool createNew,
const bool destroyExisting)
{
if (m_fqName.compare(newFqName) != 0) {
if (destroyExisting) {
destroy();
}
m_fqName = newFqName;
if (createNew) {
create();
}
}
}
// static
bool
JournalDirectory::s_exists(const std::string& fqName,
const bool checkIsWritable)
{
struct stat buff;
if (::lstat(fqName.c_str(), &buff)) {
if (errno == ENOENT) // No such dir or file
return false;
HANDLE_SYS_ERROR(fqName, JournalError::JERR_STAT, "s_exists");
}
CHK_ERROR(!S_ISDIR(buff.st_mode), fqName, JournalError::JERR_NOTADIR, "s_exists");
if (checkIsWritable) {
return (buff.st_mode & (S_IWUSR | S_IWGRP | S_IWOTH));
}
return true;
}
// static
void
JournalDirectory::s_create(const std::string& fqName)
{
std::size_t fdp = fqName.find_last_of('/');
if (fdp != std::string::npos) {
std::string parent_dir = fqName.substr(0, fdp);
if (!s_exists(parent_dir)) {
s_create(parent_dir);
}
}
if (::mkdir(fqName.c_str(), S_IRWXU | S_IRWXG | S_IROTH | S_IXOTH)) {
if (errno != EEXIST) { // Dir exists, ignore
HANDLE_SYS_ERROR(fqName, JournalError::JERR_MKDIR, "s_create");
}
}
}
void
JournalDirectory::create()
{
s_create(m_fqName);
m_verified = true;
}
//static
void
JournalDirectory::s_clear(const std::string& fqName,
const bool recursiveDelete)
{
s_destroy(fqName, recursiveDelete, true);
}
void
JournalDirectory::clear(const bool recursiveDelete)
{
s_clear(m_fqName, recursiveDelete);
}
// static
void
JournalDirectory::s_destroy(const std::string& fqName,
const bool recursiveDelete,
const bool childrenOnly)
{
if (s_exists(fqName)) {
DIR* dir = ::opendir(fqName.c_str());
if (dir) {
struct stat buff;
struct dirent* entry;
while ((entry = ::readdir(dir)) != 0) {
// Ignore . and ..
if (std::strcmp(entry->d_name, ".") != 0 && std::strcmp(entry->d_name, "..") != 0) {
std::string fullName(fqName + "/" + entry->d_name);
CHK_SYS_ERROR(::lstat(fullName.c_str(), &buff), fullName, JournalError::JERR_STAT, "s_destroy");
if (S_ISREG(buff.st_mode) || S_ISLNK(buff.st_mode)) { // This is a file or symlink
CHK_SYS_ERROR(::unlink(fullName.c_str()), fullName, JournalError::JERR_UNLINK, "s_destroy");
} else if (S_ISDIR(buff.st_mode)) { // This is a directory
if (recursiveDelete) {
s_destroy(fullName);
} else {
HANDLE_ERROR(fullName, JournalError::JERR_DIRNOTEMPTY, "s_destroy");
}
} else {
HANDLE_ERROR(fullName, JournalError::JERR_BADFTYPE, "s_destroy");
}
}
}
CHK_SYS_ERROR(::closedir(dir), fqName, JournalError::JERR_CLOSEDIR, "s_destroy");
if (!childrenOnly) {
CHK_SYS_ERROR(::rmdir(fqName.c_str()), fqName, JournalError::JERR_RMDIR, "s_destroy");
}
} else {
HANDLE_SYS_ERROR(fqName, JournalError::JERR_OPENDIR, "s_destroy");
}
}
}
void
JournalDirectory::destroy(const bool recursiveDelete,
const bool childrenOnly)
{
if (m_verified) {
s_destroy(m_fqName, recursiveDelete, childrenOnly);
m_verified = false;
}
}
bool
JournalDirectory::isVerified() const
{
return m_verified;
}
}}} // namespace qpid::asyncStore::jrnl2
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