Scott Lurndal wrote:

> Per POSIX:
>
> [EACCES]
>     Search permission is denied on a component of the path prefix,
>     or the file exists and the permissions specified by oflag are denied,
>     or the file does not exist and write permission is denied for the pare
nt
>     directory of the file to be created, or O_TRUNC is specified and write
>     permission is denied.
>
> [EROFS]
>     The named file resides on a read-only file system and either O_WRONLY,
>     O_RDWR, O_CREAT (if the file does not exist), or O_TRUNC is set in
>     the oflag argument.
>
> Note that either _could_ apply in this case, but I believe the intent of P
OSIX
> is that EROFS should take precedence.

What makes you believe that is the intent?

POSIX has a general rule that there is no precedence between errors.
XSH section 2.3 Error Numbers:

"If more than one error occurs in processing a function call, any
one of the possible errors may be returned, as the order of
detection is undefined."

--
Geoff Clare <netnews@gclare.org.uk>

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