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Re: [PATCH 2/7] Introduce target_fileio_set_fs
- From: Doug Evans <dje at google dot com>
- To: Pedro Alves <palves at redhat dot com>
- Cc: Gary Benson <gbenson at redhat dot com>, gdb-patches <gdb-patches at sourceware dot org>
- Date: Fri, 17 Apr 2015 10:28:24 -0700
- Subject: Re: [PATCH 2/7] Introduce target_fileio_set_fs
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- References: <1429186791-6867-1-git-send-email-gbenson at redhat dot com> <1429186791-6867-3-git-send-email-gbenson at redhat dot com> <CADPb22RVM=aT0+0e2679pW5az1VnwURTcQVc3T=eRo5V4tWoog at mail dot gmail dot com> <20150417133628 dot GA26681 at blade dot nx> <553116EB dot 6050508 at redhat dot com>
On Fri, Apr 17, 2015 at 7:21 AM, Pedro Alves <palves@redhat.com> wrote:
> On 04/17/2015 02:36 PM, Gary Benson wrote:
>
>> It was basically because the alternative was to add a parameter to
>> target_filesystem_is_local and target_fileio_{open,readlink,unlink}
>> (and all their target vector implementations) to pass around whatever
>> inferior you were talking about. You'd also have to make a lot more
>> changes to the remote protocol: either vFile:{open,unlink,readlink}
>> would need an extra argument (indicated with qSupported) or you'd need
>> new "fs" versions of each packet. Both Pedro and I thought that was
>> ugly.
>
> Right, this way mirrors what's done at the posix/system call level too,
> and if some other systems needs something different for selecting
> a "filesystem namespace", there's a single method/packet to change.
Fair enough.
All I would ask is that this get pushed down as far as possible in the
call stack.
E.g., while I wouldn't suggest massive changes to the remote protocol
(regardless of how desperately IWBN), IWBN that layers above that
follow good programming practices (avoiding using global state
wherever possible/reasonable).