From c711bf738f7e78ecb05acc6097088ea07646d3c0 Mon Sep 17 00:00:00 2001
From: Nikolaus Rath <Nikolaus@rath.org>
Date: Wed, 21 Jun 2017 10:59:13 -0700
Subject: Re-enabled cache support.

---
 sshfs.c | 32 ++++++++++++++++++++------------
 1 file changed, 20 insertions(+), 12 deletions(-)

(limited to 'sshfs.c')

diff --git a/sshfs.c b/sshfs.c
index 803482f..42a622c 100644
--- a/sshfs.c
+++ b/sshfs.c
@@ -224,6 +224,7 @@ struct sshfs {
 	int idmap;
 	int nomap;
 	int disable_hardlink;
+	int cache;
 	char *uid_file;
 	char *gid_file;
 	GHashTable *uid_map;
@@ -403,6 +404,8 @@ static struct fuse_opt sshfs_opts[] = {
 	SSHFS_OPT("delay_connect",     delay_connect, 1),
 	SSHFS_OPT("slave",             slave, 1),
 	SSHFS_OPT("disable_hardlink",  disable_hardlink, 1),
+	SSHFS_OPT("cache=yes",         cache, 1),
+	SSHFS_OPT("cache=no",          cache, 0),
 
 	FUSE_OPT_KEY("-p ",            KEY_PORT),
 	FUSE_OPT_KEY("-C",             KEY_COMPRESS),
@@ -2447,7 +2450,10 @@ static int sshfs_open_common(const char *path, mode_t mode,
 	uint32_t pflags = 0;
 	struct iovec iov;
 	uint8_t type;
-	uint64_t wrctr = cache_get_write_ctr();
+	uint64_t wrctr = 0;
+
+	if (sshfs.cache)
+		wrctr = cache_get_write_ctr();
 
 	if ((fi->flags & O_ACCMODE) == O_RDONLY)
 		pflags = SSH_FXF_READ;
@@ -2504,11 +2510,13 @@ static int sshfs_open_common(const char *path, mode_t mode,
 	}
 
 	if (!err) {
-		cache_add_attr(path, &stbuf, wrctr);
+		if (sshfs.cache)
+			cache_add_attr(path, &stbuf, wrctr);
 		buf_finish(&sf->handle);
 		fi->fh = (unsigned long) sf;
 	} else {
-		cache_invalidate(path);
+		if (sshfs.cache)
+			cache_invalidate(path);
 		g_free(sf);
 	}
 	buf_free(&buf);
@@ -3234,8 +3242,7 @@ static int processing_init(void)
 	return 0;
 }
 
-static struct fuse_cache_operations sshfs_oper = {
-	.oper = {
+static struct fuse_operations sshfs_oper = {
 		.init       = sshfs_init,
 		.getattr    = sshfs_getattr,
 		.access     = sshfs_access,
@@ -3266,8 +3273,6 @@ static struct fuse_cache_operations sshfs_oper = {
 		.fgetattr   = sshfs_fgetattr,
 		.flag_nullpath_ok = 1,
 		.flag_nopath = 1,
-	},
-//	.cache_readdir = sshfs_readdir,
 };
 
 static void usage(const char *progname)
@@ -3812,6 +3817,7 @@ int main(int argc, char *argv[])
 	sshfs.rfd = -1;
 	sshfs.wfd = -1;
 	sshfs.ptyfd = -1;
+	sshfs.cache = 1;
 	sshfs.ptyslavefd = -1;
 	sshfs.delay_connect = 0;
 	sshfs.slave = 0;
@@ -3837,8 +3843,8 @@ int main(int argc, char *argv[])
 
 	// These workarounds require the "path" argument.
 	if (sshfs.truncate_workaround || sshfs.fstat_workaround) {
-		sshfs_oper.oper.flag_nullpath_ok = 0;
-		sshfs_oper.oper.flag_nopath = 0;
+		sshfs_oper.flag_nullpath_ok = 0;
+		sshfs_oper.flag_nopath = 0;
 	}
 
 	if (sshfs.idmap == IDMAP_USER)
@@ -3977,9 +3983,11 @@ int main(int argc, char *argv[])
 			perror("WARNING: failed to set FD_CLOEXEC on fuse device");
 #endif
 
-		sshfs.op = cache_init(&sshfs_oper);
-		// FIXME: Bypass cache for now
-		fuse = fuse_new(ch, &args, &sshfs_oper.oper,
+		if(sshfs.cache)
+			sshfs.op = cache_init(&sshfs_oper);
+		else
+			sshfs.op = &sshfs_oper;
+		fuse = fuse_new(ch, &args, sshfs.op,
 				sizeof(struct fuse_operations), NULL);
 		if (fuse == NULL) {
 			fuse_unmount(mountpoint, ch);
-- 
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