Experimental Physics and
Industrial Control System

Marty Kraimer <[email protected]> · Mon, 28 Jul 1997 08:56:55 -0500

Ralph Lange wrote:
> 
> Hi Marty,
> 
> > At the end of our vwXorks startup files we execute the command:
> >
> > dbl > some_file
> >
> > If the file is written via ftp it has the protections:
> >
> > -rw-r--r--
> >
> > I it is written via NFS it is
> >
> > -rw-r-----
> >
> > Does anyone know how we can make the NFS create the file with:
> >
> > -rw-r--r--
> 
> I proposed this question to my favourite WRS support engineer and the
> official answer is:
> 
> [ If you supply a "mode" in the open() call, it will be the file mode -
> [ default permissions otherwise.
> [
> [ nfsLib.c :
> [
> [     createArgs.where.name = fileName;
> [
> [     pSattr = &createArgs.attributes;
> [
> [     if (mode == 0)
> [         /* create a file with default permissions */
> [         pSattr->mode = NFS_FSTAT_REG | DEFAULT_FILE_PERM;
> [     else
> [         pSattr->mode = mode;
> 
> Ralph

In our vxWorks distribution I did a grep for DEFAULT_FILE_PERM
and sure enough I found

h/ioLib.h:#define DEFAULT_FILE_PERM     0000640 

Changing the value to 644 should solve the problem
By the way I did change dbl so it accepts an optional 2nd argument
which is a file name. dbl then executes

fd = open(filename, O_CREAT | O_WRONLY | O_TRUNC, 0644 );

This solved the problem for dbl.
Ralph's solution solves the problem for all commands of the form

xxx > "file name"

Thanks,

Marty

Experimental Physics and Industrial Control System

Experimental Physics and
Industrial Control System