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path: root/netfs/daemon/daemonFile.cpp
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#include "pch.hpp"
#include <errno.h>
#include <map>
#include <fcntl.h>
#include <typeConvert.h>
#include <sys/stat.h>
#include "daemonFile.h"

FileServer::FileServer(int f) :
	fd(f)
{
}

FileServer::~FileServer()
{
}

void
FileServer::ftruncate(const NetFS::ReqEnv & re, Ice::Long size, const Ice::Current&)
{
	TempPrivs tp(re, &uentries, &gentries);
	errno = 0;
	if (::ftruncate(fd, size) != 0) {
		throw NetFS::SystemError(errno);
	}
}

NetFS::Attr
FileServer::fgetattr(const NetFS::ReqEnv & re, const Ice::Current &)
{
	TempPrivs tp(re, &uentries, &gentries);
	struct stat s;
	if (::fstat(fd, &s) != 0) {
		throw NetFS::SystemError(errno);
	}
	NetFS::Attr a;
	a << StatSource { s, boost::bind(&UserEntCache::getName, &uentries, _1), boost::bind(&GroupEntCache::getName, &gentries, _1) };
	return a;
}

void
FileServer::close(const Ice::Current & ice)
{
	errno = 0;
	if (::close(fd) != 0) {
		throw NetFS::SystemError(errno);
	}
	ice.adapter->remove(ice.id);
}

NetFS::Buffer
FileServer::read(Ice::Long offset, Ice::Long size, const Ice::Current&)
{
	NetFS::Buffer buf;
	buf.resize(size);
	errno = 0;
	int r = pread(fd, &buf[0], size, offset);
	if (r == -1) {
		throw NetFS::SystemError(errno);
	}
	else if (r != size) {
		buf.resize(r);
	}
	return buf;
}

void
FileServer::write(Ice::Long offset, Ice::Long size, const NetFS::Buffer & data, const Ice::Current&)
{
	errno = 0;
	if (pwrite(fd, &data.front(), size, offset) != size) {
		throw NetFS::SystemError(errno);
	}
}