From 4c92784e3903ec635519fe90d705c734a1290109 Mon Sep 17 00:00:00 2001
From: randomdan <randomdan@localhost>
Date: Sat, 22 Mar 2014 13:49:48 +0000
Subject: Annoyingly pessimistic locking around open handle proxy lookups

---
 netfs/fuse/fuseDirs.cpp  | 13 ++++++++++---
 netfs/fuse/fuseFiles.cpp | 31 +++++++++++++++++++++++++------
 2 files changed, 35 insertions(+), 9 deletions(-)

diff --git a/netfs/fuse/fuseDirs.cpp b/netfs/fuse/fuseDirs.cpp
index fac70a6..216d032 100644
--- a/netfs/fuse/fuseDirs.cpp
+++ b/netfs/fuse/fuseDirs.cpp
@@ -19,7 +19,6 @@ NetFS::FuseApp::setProxy(OpenDirPtr od, uint64_t & fh)
 NetFS::FuseApp::OpenDirPtr
 NetFS::FuseApp::getDirProxy(uint64_t localID) const
 {
-	SLOCK;
 	OpenDirs::const_iterator i = openDirs.find(localID);
 	if (i != openDirs.end()) {
 		return i->second;
@@ -51,7 +50,11 @@ int
 NetFS::FuseApp::releasedir(const char *, struct fuse_file_info * fi)
 {
 	try {
-		auto remote = getDirProxy(fi->fh)->remote;
+		DirectoryPrx remote;
+		{
+			LOCK;
+			remote = getDirProxy(fi->fh)->remote;
+		}
 		remote->close();
 		clearDirProxy(fi->fh);
 		return 0;
@@ -65,7 +68,11 @@ int
 NetFS::FuseApp::readdir(const char *, void * buf, fuse_fill_dir_t filler, off_t, struct fuse_file_info * fi)
 {
 	try {
-		auto remote = getDirProxy(fi->fh)->remote;
+		DirectoryPrx remote;
+		{
+			LOCK;
+			remote = getDirProxy(fi->fh)->remote;
+		}
 		NetFS::NameList ds = remote->readdir();
 		BOOST_FOREACH(const auto & e, ds) {
 			filler(buf, e.c_str(), NULL, 0);
diff --git a/netfs/fuse/fuseFiles.cpp b/netfs/fuse/fuseFiles.cpp
index 4a96e51..c8d2495 100644
--- a/netfs/fuse/fuseFiles.cpp
+++ b/netfs/fuse/fuseFiles.cpp
@@ -21,7 +21,6 @@ NetFS::FuseApp::setProxy(OpenFilePtr of, uint64_t & fh)
 NetFS::FuseApp::OpenFilePtr
 NetFS::FuseApp::getFileProxy(uint64_t localID) const
 {
-	SLOCK;
 	OpenFiles::const_iterator i = openFiles.find(localID);
 	if (i != openFiles.end()) {
 		return i->second;
@@ -66,7 +65,11 @@ int
 NetFS::FuseApp::release(const char *, struct fuse_file_info * fi)
 {
 	try {
-		auto remote = getFileProxy(fi->fh)->remote;
+		FilePrx remote;
+		{
+			LOCK;
+			remote = getFileProxy(fi->fh)->remote;
+		}
 		remote->close();
 		clearFileProxy(fi->fh);
 		return 0;
@@ -80,7 +83,11 @@ 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;
+		FilePrx remote;
+		{
+			LOCK;
+			remote = getFileProxy(fi->fh)->remote;
+		}
 		NetFS::Buffer data = remote->read(o, s);
 		memcpy(buf, &data.front(), data.size());
 		return data.size();
@@ -94,7 +101,11 @@ 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;
+		FilePrx remote;
+		{
+			LOCK;
+			remote = getFileProxy(fi->fh)->remote;
+		}
 		remote->write(o, s, NetFS::Buffer(buf, buf + s));
 		return s;
 	}
@@ -119,7 +130,11 @@ int
 NetFS::FuseApp::ftruncate(const char *, off_t o, fuse_file_info * fi)
 {
 	try {
-		auto remote = getFileProxy(fi->fh)->remote;
+		FilePrx remote;
+		{
+			LOCK;
+			remote = getFileProxy(fi->fh)->remote;
+		}
 		remote->ftruncate(reqEnv(), o);
 		return 0;
 	}
@@ -132,7 +147,11 @@ int
 NetFS::FuseApp::fgetattr(const char *, struct stat * s, fuse_file_info * fi)
 {
 	try {
-		auto remote = getFileProxy(fi->fh)->remote;
+		FilePrx remote;
+		{
+			LOCK;
+			remote = getFileProxy(fi->fh)->remote;
+		}
 		*s << AttrSource { remote->fgetattr(reqEnv()), boost::bind(&UserEntCache::getID, &uentries, _1), boost::bind(&GroupEntCache::getID, &gentries, _1) };
 		return 0;
 	}
-- 
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