[Toybox] [Patch] - freeramdisk, openvt & deallocvt

[Vivek Bhagat]

Hi Isaac,

Thanks. I have incorporated your comments.
Please find the updated files attached herewith.

Regards,
Vivek


On Thu, Feb 6, 2014 at 12:38 AM, Isaac Dunham <ibid.ag at gmail.com> wrote:

> On Wed, Feb 05, 2014 at 06:49:03PM +0530, Vivek Bhagat wrote:
> > Hi List,
> >
> > This is my first post on ToyBox community.
> >
> Welcome!
>
> I'm sorry I can't do inline comments this time, between the mime types and
> the editor I'm using; but I'll try to comment.
>
> And thanks for breaking them out into separate patches.
>
> Anyhow, first there are some smaller details that apply to all of them:
>
> 1. It would be nice if in the future new toys were submitted by
> attaching the source code, rather than a patch (eg, freeramdisk.c,
> openvt.c, and deallocvt.c)
>
> 2. Rob puts submissions into toys/pending first and sets them to "default
> n"
>
> 3. For toybox, the standard indentation is 2 spaces for every level.
>
> 4. I note that the NEWTOY line has more options than TOYFLAG_USR &
> TOYFLAG_BIN:
> All of these should have TOYFLAG_NEEDROOT, and freeramdisk really belongs
> in
> /sbin (TOYFLAG_SBIN)
>
> > Please find the patches attached herewith for adding 3 new commands -
> > 1. freeramdisk - If we unmount or detach the RAM disk based file system
> the
> > Linux Kernel
> >    will not free the allocated memory associated with the RAM device.
> This
> > can be useful if
> >    one wants to mount this device again:  All data will be preserved.
> >    If we need to free the memory back to the Kernel, one can use the
> > command: "toybox freeramdisk <RAM device>".
>
> This one looked pretty good.
>
> >
> > 2. openvt - Successfully opens a new virtual terminal as mentioned with
> -c
> > option
> >         otherwise search and open next available VT.
> >  with -s option it switches to new VT
> > with -s -w option, it switch back successfully to originating VT.
>
> A couple of smaller details...
> This bit:
> >+      vt_fd = open(toybuf, O_RDWR);
> >+      if (vt_fd < 0) perror_exit("failed to open /dev/tty%d", TT.vt_num);
> could be replaced with
> vt_fd = xopen(toybuf, O_RDWR);
>
> Also, full POSIX conformance requires STDIN_FILENO to be 0,
> and toybox relies on this quite heavily.
>
> > 3. deallocvt - Deallocate specified virtual teminal.
> >     if no virtual terminal is specified, it deallocates all unused VT.
> >
>
> Uses find_console_fd() from openvt.c, and does not depend on openvt.
> The options are:
> -add "depends on openvt" to the kconfig entry
> -move find_console_fd() to lib/
> -put deallocvt in openvt.c
>
> > Please find the test log attached here for above 3 commands.
> > Your inputs are welcome.
> >
> > Thanks.
> > Vivek
>
>
> Thank you,
> Isaac Dunham
>
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