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#include "pch.hpp"
#include <string.h>
#include <typeConvert.h>
#include "fuse.h"
#include "lockHelpers.h"
NetFS::FuseApp::OpenFile::OpenFile(FilePrx r, const std::string & p, int f) :
remote(r),
path(p),
flags(f)
{
}
void
NetFS::FuseApp::setProxy(OpenFilePtr of, uint64_t & fh)
{
Lock(_lock);
while (openFiles.find(fh = ++openFileID) != openFiles.end()) ;
openFiles.insert({ fh, of });
}
NetFS::FuseApp::OpenFilePtr
NetFS::FuseApp::getFileProxy(uint64_t localID) const
{
SharedLock(_lock);
OpenFiles::const_iterator i = openFiles.find(localID);
if (i != openFiles.end()) {
return i->second;
}
throw NetFS::SystemError(EBADF);
}
void
NetFS::FuseApp::clearFileProxy(uint64_t localID)
{
Lock(_lock);
openFiles.erase(localID);
}
int
NetFS::FuseApp::open(const char * p, struct fuse_file_info * fi)
{
try {
auto remote = volume->open(reqEnv(), p, fi->flags);
setProxy(new OpenFile(remote, p, fi->flags), fi->fh);
return 0;
}
catch (NetFS::SystemError & e) {
return -e.syserrno;
}
}
int
NetFS::FuseApp::create(const char * p, mode_t m, struct fuse_file_info * fi)
{
try {
auto remote = volume->create(reqEnv(), p, fi->flags, m);
setProxy(new OpenFile(remote, p, fi->flags), fi->fh);
return 0;
}
catch (NetFS::SystemError & e) {
return -e.syserrno;
}
}
int
NetFS::FuseApp::release(const char *, struct fuse_file_info * fi)
{
try {
auto remote = getFileProxy(fi->fh)->remote;
remote->close();
clearFileProxy(fi->fh);
return 0;
}
catch (NetFS::SystemError & e) {
return -e.syserrno;
}
}
int
NetFS::FuseApp::read(const char *, char * buf, size_t s, off_t o, struct fuse_file_info * fi)
{
try {
auto remote = getFileProxy(fi->fh)->remote;
NetFS::Buffer data = remote->read(o, s);
memcpy(buf, &data.front(), data.size());
return data.size();
}
catch (NetFS::SystemError & e) {
return -e.syserrno;
}
}
int
NetFS::FuseApp::write(const char *, const char * buf, size_t s, off_t o, struct fuse_file_info * fi)
{
try {
auto remote = getFileProxy(fi->fh)->remote;
remote->write(o, s, NetFS::Buffer(buf, buf + s));
return s;
}
catch (NetFS::SystemError & e) {
return -e.syserrno;
}
}
int
NetFS::FuseApp::truncate(const char * p, off_t o)
{
try {
volume->truncate(reqEnv(), p, o);
return 0;
}
catch (NetFS::SystemError & e) {
return -e.syserrno;
}
}
int
NetFS::FuseApp::ftruncate(const char *, off_t o, fuse_file_info * fi)
{
try {
auto remote = getFileProxy(fi->fh)->remote;
remote->ftruncate(reqEnv(), o);
return 0;
}
catch (NetFS::SystemError & e) {
return -e.syserrno;
}
}
int
NetFS::FuseApp::fgetattr(const char *, struct stat * s, fuse_file_info * fi)
{
try {
auto remote = getFileProxy(fi->fh)->remote;
*s << AttrSource { remote->fgetattr(reqEnv()), boost::bind(&UserEntCache::getID, &uentries, _1), boost::bind(&GroupEntCache::getID, &gentries, _1) };
return 0;
}
catch (NetFS::SystemError & e) {
return -e.syserrno;
}
}
int
NetFS::FuseApp::unlink(const char * p)
{
try {
volume->unlink(reqEnv(), p);
return 0;
}
catch (NetFS::SystemError & e) {
return -e.syserrno;
}
}
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