How can I determine, at a file-and-volume-high-level-API-level, which volumes
are physically read-only (i.e. CD-Rs and DVD-Rs) and thus cannot be written to
_even by Root_ (or by a process given Root-level privilege by
AuthorizationExecuteWithPrivileges?)
So far, all the miscellaneous UNIX system APIs I've played with do not seem to
take into account the physical characteristics of the device when displaying
access. For example:
Software-Engineering-G5:/Volumes d_smith$ ls -l
total 8
drwxrwxr-t 37 d_smith unknown 1258 1 Feb 03:01 Mac OS X Install DVD
drwxrwxr-t 47 root admin 1598 2 Mar 09:19 Part_1_Dan_Smith
drwxrwxr-t 32 root admin 1088 2 Mar 09:19 Part_2_SQA
lrwxr-xr-x 1 root admin 1 1 Mar 08:04 Part_3_Panther_Dan_Smith -> /
drwxrwxr-t 58 root admin 1972 2 Mar 09:19 Part_4_Dan_Smith
Notice that UNIX seems to be saying that I am the owner of Mac OS X Install
DVD... and that I have write access to it.
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