[fuse-devel] null pointer exception in fuse_unmount_common

[Valient G. <va...@gm...>]

Hi,

I've been updating my filesystem to use the FUSE 26 API.  However
fuse_unmount has changed to take a fuse_chan, which I don't have.  It
doesn't appear that I have access to that if I call fuse_main, only if
I do all the setup myself.

It looks like fuse_unmount is supposed to allow a null for fuse_chan,
however it appears to be missing a check:

--- a/lib/helper.c      Wed Jan 02 20:36:41 2008 -0800
+++ b/lib/helper.c      Wed Jan 02 20:37:06 2008 -0800
@@ -226,7 +226,8 @@ static void fuse_unmount_common(const ch
 {
        int fd = ch ? fuse_chan_fd(ch) : -1;
        fuse_kern_unmount(mountpoint, fd);
-       fuse_chan_destroy(ch);
+       if(ch)
+           fuse_chan_destroy(ch);
 }


In the mean time, my workaround is to directly call
fuse_unmount_compat22 from my app.  Is there some other way to get
access to fuse_chan without having to duplicate all the code in
fuse_main into the local app?

regards,
Valient