/*
	main.c?（01.09.09）
	FUSE-based?exFAT?implementation.?Requires?FUSE?2.6?or?later.

	Copyright?（C）?2010-2013??Andrew?Nayenko

	This?program?is?free?software:?you?can?redistribute?it?and/or?modify
	it?under?the?terms?of?the?GNU?General?Public?License?as?published?by
	the?Free?Software?Foundation?either?version?3?of?the?License?or
	（at?your?option）?any?later?version.

	This?program?is?distributed?in?the?hope?that?it?will?be?useful
	but?WITHOUT?ANY?WARRANTY;?without?even?the?implied?warranty?of
	MERCHANTABILITY?or?FITNESS?FOR?A?PARTICULAR?PURPOSE.??See?the
	GNU?General?Public?License?for?more?details.

	You?should?have?received?a?copy?of?the?GNU?General?Public?License
	along?with?this?program.??If?not?see?.
*/

#define?FUSE_USE_VERSION?26
#include?
#include?
#include?
#include?
#include?
#include?
#include?
#include?
#include?
#include?
#include?
#include?

#define?exfat_debug（format?...）

#if?!defined（FUSE_VERSION）?||?（FUSE_VERSION?	#error?FUSE?2.6?or?later?is?required
#endif

const?char*?default_options?=?“ro_fallbackallow_otherblkdevbig_writes“
		“defer_permissions“;

struct?exfat?ef;

static?struct?exfat_node*?get_node（const?struct?fuse_file_info*?fi）
{
	return?（struct?exfat_node*）?（size_t）?fi->fh;
}

static?void?set_node（struct?fuse_file_info*?fi?struct?exfat_node*?node）
{
	fi->fh?=?（uint64_t）?（size_t）?node;
}

static?int?fuse_exfat_getattr（const?char*?path?struct?stat*?stbuf）
{
	struct?exfat_node*?node;
	int?rc;

	exfat_debug（“[%s]?%s“?__func__?path）;

	rc?=?exfat_lookup（&ef?&node?path）;
	if?（rc?!=?0）
		return?rc;

	exfat_stat（&ef?node?stbuf）;
	exfat_put_node（&ef?node）;
	return?0;
}

static?int?fuse_exfat_truncate（const?char*?path?s64?size）
{
	struct?exfat_node*?node;
	int?rc;

	exfat_debug（“[%s]?%s?%“PRId64?__func__?path?size）;

	rc?=?exfat_lookup（&ef?&node?path）;
	if?（rc?!=?0）
		return?rc;

	rc?=?exfat_truncate（&ef?node?size?true）;
	exfat_put_node（&ef?node）;
	return?rc;
}

static?int?fuse_exfat_readdir（const?char*?path?void*?buffer
		fuse_fill_dir_t?filler?s64?offset?struct?fuse_file_info*?fi）
{
	struct?exfat_node*?parent;
	struct?exfat_node*?node;
	struct?exfat_iterator?it;
	int?rc;
	char?name[EXFAT_NAME_MAX?+?1];

	exfat_debug（“[%s]?%s“?__func__?path）;

	rc?=?exfat_lookup（&ef?&parent?path）;
	if?（rc?!=?0）
		return?rc;
	if?（!（parent->flags?&?EXFAT_ATTRIB_DIR））
	{
		exfat_put_node（&ef?parent）;
		exfat_error（“‘%s‘?is?not?a?directory?（0x%x）“?path?parent->flags）;
		return?-ENOTDIR;
	}

	filler（buffer?“.“?NULL?0）;
	filler（buffer?“..“?NULL?0）;

	rc?=?exfat_opendir（&ef?parent?&it）;
	if?（rc?!=?0）
	{
		exfat_put_node（&ef?parent）;
		exfat_error（“failed?to?open?directory?‘%s‘“?path）;
		return?rc;
	}
	while?（（node?=?exfat_readdir（&ef?&it）））
	{
		exfat_get_name（node?name?EXFAT_NAME_MAX）;
		exfat_debug（“[%s]?%s:?%s?%“PRId64“?bytes?cluster?0x%x“?__fun