Re: [fuse-devel] Return value modified for truncate, utime and chown

[Miklos S. <mi...@sz...>]

> I'm trying to make a new binding for a Scheme interpreter of my
> own. This binding is nearly finished but I have three calls that
> always give me problems. These calls are truncate utime and chown.
> The symptom is the same for these three calls: even if I return 0,
> finally the caller sees an EIO error. I have tried to track down
> the problem in the library but was not able to figure where the value
> is changed. Here is a trace of such a call:
> 
>     OPEN[1] flags: 0x8801
>        unique: 18, error: 0 (Success), outsize: 32
>     unique: 19, opcode: RELEASE (18), nodeid: 3, insize: 56
>     RELEASE[1] flags: 0x8801
>        unique: 19, error: 0 (Success), outsize: 16
>     unique: 20, opcode: SETATTR (4), nodeid: 3, insize: 128
>        unique: 20, error: 0 (Success), outsize: 112
> 
> So, everything seems correct in the library, but in the mounted
> file system the touch command used there return an IO error. 

I'm almost sure that the cause is a bad st_mode value.  Make sure that
the file type (the upper bits of st_mode) are always correctly set.

Miklos