Patchwork latencytop: add sudo as runtime dependency

From: "Maxin B. John" <maxin.john@enea.com>

Latencytop needs superuser privileges. The latencytop plugin in
eclipse invokes it as 'sudo latencytop'. So, it will be good to
include sudo as a runtime dependency.

Signed-off-by: Maxin B. John <maxin.john@enea.com>
---
 meta/recipes-kernel/latencytop/latencytop_0.5.bb |    3 +++
 1 files changed, 3 insertions(+), 0 deletions(-)

On Fri, 2013-01-04 at 12:30 +0100, Maxin B. John wrote:
> From: "Maxin B. John" <maxin.john@enea.com>
> 
> Latencytop needs superuser privileges. The latencytop plugin in
> eclipse invokes it as 'sudo latencytop'. So, it will be good to
> include sudo as a runtime dependency.
> 
> Signed-off-by: Maxin B. John <maxin.john@enea.com>
> ---
>  meta/recipes-kernel/latencytop/latencytop_0.5.bb |    3 +++
>  1 files changed, 3 insertions(+), 0 deletions(-)
> 
> diff --git a/meta/recipes-kernel/latencytop/latencytop_0.5.bb b/meta/recipes-kernel/latencytop/latencytop_0.5.bb
> index 3e35bf9..a148a47 100644
> --- a/meta/recipes-kernel/latencytop/latencytop_0.5.bb
> +++ b/meta/recipes-kernel/latencytop/latencytop_0.5.bb
> @@ -7,6 +7,9 @@ LIC_FILES_CHKSUM = "file://latencytop.c;endline=23;md5=ee9ea9b1415356e5734adad4a
>  
>  DEPENDS = "virtual/libintl ncurses glib-2.0  ${@base_contains('DISTRO_FEATURES', 'x11', 'gtk+', '', d)}"
>  
> +# latencytop and it's eclipse support need sudo
> +RDEPENDS_${PN} = "sudo"
> +
>  PR = "r3"

Shouldn't the eclipse support RDEPEND on sudo, not latencytop? There are
several ways you could run latencytop without sudo...

Following this logic, we'd add an RDEPENDS on sudo for every app that
could possibly need root privs.

Cheers,

Richard

Hi Richard,
On Fri, Jan 04, 2013 at 02:27:42PM +0000, Richard Purdie wrote:
> On Fri, 2013-01-04 at 12:30 +0100, Maxin B. John wrote:
> > From: "Maxin B. John" <maxin.john@enea.com>
> > 
> > Latencytop needs superuser privileges. The latencytop plugin in
> > eclipse invokes it as 'sudo latencytop'. So, it will be good to
> > include sudo as a runtime dependency.
> > 
> > Signed-off-by: Maxin B. John <maxin.john@enea.com>
> > ---
> >  meta/recipes-kernel/latencytop/latencytop_0.5.bb |    3 +++
> >  1 files changed, 3 insertions(+), 0 deletions(-)
> > 
> > diff --git a/meta/recipes-kernel/latencytop/latencytop_0.5.bb b/meta/recipes-kernel/latencytop/latencytop_0.5.bb
> > index 3e35bf9..a148a47 100644
> > --- a/meta/recipes-kernel/latencytop/latencytop_0.5.bb
> > +++ b/meta/recipes-kernel/latencytop/latencytop_0.5.bb
> > @@ -7,6 +7,9 @@ LIC_FILES_CHKSUM = "file://latencytop.c;endline=23;md5=ee9ea9b1415356e5734adad4a
> >  
> >  DEPENDS = "virtual/libintl ncurses glib-2.0  ${@base_contains('DISTRO_FEATURES', 'x11', 'gtk+', '', d)}"
> >  
> > +# latencytop and it's eclipse support need sudo
> > +RDEPENDS_${PN} = "sudo"
> > +
> >  PR = "r3"
> 
> Shouldn't the eclipse support RDEPEND on sudo, not latencytop? There are
> several ways you could run latencytop without sudo...

I agree. We can run latencytop without sudo. However, it is possible
to install the Eclipse Yocto Plug-in from the downloads.yoctoproject.org.
So, it may not be necessary to build the Eclipse Yocto Plug-in
support in-order to use it.

In that case, when we use the latencytop plugin from Eclipse by
connecting to a target board running linux, it will fail with the
following output:
# sudo : command not found

It is because of this line in 'LatencytopHandler.java':
private static String initCmd="export
PATH=$PATH:/usr/local/sbin:/usr/sbin:/sbin; cd; sudo latencytop\r"; 

This line 'assumes' that every target board with latencytop also have
sudo. Please correct me if I am wrong.
 
> Following this logic, we'd add an RDEPENDS on sudo for every app that
> could possibly need root privs.
I didn't mean that :) 
This is a special case for latencytop. Please let me know your comments.

> Cheers,
> 
> Richard
Best Regards,
Maxin