Hi,

I'm having a problem with a simple sanity check performed by 'iozone -a'.

Basically, iozone create a file with a permission value of 0 and then it tries 
to truncate it:

1) fd = open("file", O_WRONLY|O_CREAT, 0)
2) ftruncate(fd, 0)

In zfs-fuse, the ftruncate() call ends up calling zfs_setattr() with AT_SIZE 
set in the attribute mask.

The problem is that one of the first things zfs_setattr() does is validate the 
permissions (by calling zfs_zaccess()), which fails since the file owner 
doesn't have write permission.

What am I doing wrong here? iozone seems to work in Solaris.

Thanks.

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