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path: root/netfs/fuse/fuseDirs.cpp
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#include <pch.hpp>
#include "fuseApp.h"
#include <lockHelpers.h>
#include <typeConvert.h>
#include <entCache.h>

NetFS::FuseApp::OpenDir::OpenDir(DirectoryPrx r, const std::string & p) :
	remote(r),
	path(p)
{
}

void
NetFS::FuseApp::setProxy(OpenDirPtr od, uint64_t & fh)
{
	Lock(_lock);
	while (openDirs.find(fh = ++openDirID) != openDirs.end()) ;
	openDirs.insert({ fh, od });
}

NetFS::FuseApp::OpenDirPtr
NetFS::FuseApp::getDirProxy(uint64_t localID) const
{
	SharedLock(_lock);
	OpenDirs::const_iterator i = openDirs.find(localID);
	if (i != openDirs.end()) {
		return i->second;
	}
	throw NetFS::SystemError(EBADF);
}

void
NetFS::FuseApp::clearDirProxy(uint64_t localID)
{
	Lock(_lock);
	openDirs.erase(localID);
}

int
NetFS::FuseApp::opendir(const char * p, struct fuse_file_info * fi)
{
	try {
		auto remote = volume->opendir(reqEnv(), p);
		setProxy(new OpenDir(remote, p), fi->fh);
		return 0;
	}
	catch (NetFS::SystemError & e) {
		return -e.syserrno;
	}
}

int
NetFS::FuseApp::releasedir(const char *, struct fuse_file_info * fi)
{
	try {
		auto remote = getDirProxy(fi->fh)->remote;
		remote->close();
		clearDirProxy(fi->fh);
		return 0;
	}
	catch (NetFS::SystemError & e) {
		return -e.syserrno;
	}
}

int
NetFS::FuseApp::readdir(const char * p, void * buf, fuse_fill_dir_t filler, off_t, struct fuse_file_info * fi)
{
	try {
		auto remote = getDirProxy(fi->fh)->remote;
		NetFS::NameList ds = remote->readdir();
		std::string path(p);
		NetFS::VolumePrx vc = volume;
		for (const auto & e : ds) {
			filler(buf, e.c_str(), NULL, 0);
			std::string epath = path + "/" + e;
			auto asga = volume->begin_getattr(reqEnv(), epath);
			statCache.add(epath,
						[asga,this]() {
							struct stat s;
							s << AttrSource { volume->end_getattr(asga), userLookup, groupLookup };
							return s;
						}, time_t(NULL) + 2);
		}
		return 0;
	}
	catch (NetFS::SystemError & e) {
		return -e.syserrno;
	}
}

int
NetFS::FuseApp::mkdir(const char * p, mode_t m)
{
	try {
		volume->mkdir(reqEnv(), p, m);
		return 0;
	}
	catch (NetFS::SystemError & e) {
		return -e.syserrno;
	}
}

int
NetFS::FuseApp::rmdir(const char * p)
{
	try {
		volume->rmdir(reqEnv(), p);
		return 0;
	}
	catch (NetFS::SystemError & e) {
		return -e.syserrno;
	}
}