Mark & Others:
> I think you may have misunderstood what people were suggesting. They
> weren't suggesting changing the mode of the file, but using chmod(1M) to
> add/modify ZFS ACLs on the device file.
>
> chmod A+user:gdm:rwx:allow <file>
>
> See chmod(1M) or the zfs admin guide for ZFS ACL examples.
Thanks for your help. Now GDM is using the following code to set ACL's
(spacing slightly modified for readability):
{
int acl_flavor;
acl_flavor = pathconf("/dev/audio", _PC_ACL_ENABLED);
if (acl_flavor & _ACL_ACLENT_ENABLED) {
system ("/usr/bin/setfacl -m user:gdm:rwx,mask:rwx
/dev/audio");
system ("/usr/bin/setfacl -m user:gdm:rwx,mask:rwx
/dev/audioctl");
} else if (acl_flavor & _ACL_ACE_ENABLED) {
system ("/usr/bin/chmod A+user:gdm:rwx:allow
/dev/audio");
system ("/usr/bin/chmod A+user:gdm:rwx:allow
/dev/audioctl");
}
}
That works much better, and now GDM text-to-speech works much better on
ZFS filesystems.
However, now I am wondering if it might be better to call acl(2) functions
rather than spawning off new processes via system(). Does setfacl(2), for
exmaple, work with both flavors, or would I need to call different functions
based on the acl_flavor? I am not very familiar with working with
acl's, so any help explaining how to modify the above code to use acl
functions rather than calling system would be helpful.
Thanks,
Brian
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