From: Miklos Szeredi <mszeredi@suse.cz>
Date: Tue, 10 Apr 2012 14:01:00 +0000 (+0200)
Subject: Check protocol version before sending notifications
X-Git-Tag: fuse_2_9_0~5
X-Git-Url: http://git.maquefel.me/?a=commitdiff_plain;h=6f77e7de6f0ad9a8d6991c213841c926acc53a96;p=qemu-gpiodev%2Flibfuse.git

Check protocol version before sending notifications

Check protocol version before sending notifications and return -ENOSYS if a
particular notification is not supported.
---

diff --git a/ChangeLog b/ChangeLog
index e4ba255..fab6ee1 100644
--- a/ChangeLog
+++ b/ChangeLog
@@ -1,3 +1,8 @@
+2012-04-10  Miklos Szeredi <miklos@szeredi.hu>
+
+	* Check protocol version before sending notifications and return
+	-ENOSYS if a particular notification is not supported.
+
 2012-01-27  Miklos Szeredi <miklos@szeredi.hu>
 
 	* Interpret octal escape codes in options.  Requested by Jan
diff --git a/lib/fuse_lowlevel.c b/lib/fuse_lowlevel.c
index a0d4887..2282ccf 100644
--- a/lib/fuse_lowlevel.c
+++ b/lib/fuse_lowlevel.c
@@ -2028,6 +2028,9 @@ int fuse_lowlevel_notify_delete(struct fuse_chan *ch,
 	if (!f)
 		return -ENODEV;
 
+	if (f->conn.proto_minor < 18)
+		return -ENOSYS;
+
 	outarg.parent = parent;
 	outarg.child = child;
 	outarg.namelen = namelen;
@@ -2059,6 +2062,9 @@ int fuse_lowlevel_notify_store(struct fuse_chan *ch, fuse_ino_t ino,
 	if (!f)
 		return -ENODEV;
 
+	if (f->conn.proto_minor < 15)
+		return -ENOSYS;
+
 	out.unique = 0;
 	out.error = FUSE_NOTIFY_STORE;
 
@@ -2138,6 +2144,9 @@ int fuse_lowlevel_notify_retrieve(struct fuse_chan *ch, fuse_ino_t ino,
 	if (!f)
 		return -ENODEV;
 
+	if (f->conn.proto_minor < 15)
+		return -ENOSYS;
+
 	rreq = malloc(sizeof(*rreq));
 	if (rreq == NULL)
 		return -ENOMEM;