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* [PATCH v2] sstate: fix touching files inside pseudo
@ 2021-10-20 17:25 Jose Quaresma
  2021-10-25 14:28 ` [OE-core] " Peter Kjellerstedt
  0 siblings, 1 reply; 4+ messages in thread
From: Jose Quaresma @ 2021-10-20 17:25 UTC (permalink / raw)
  To: openembedded-core; +Cc: Jose Quaresma

running the 'id' command inside the sstate_create_package
function shows that this funcion run inside the pseudo:

 uid=0(root) gid=0(root) groups=0(root)

The check for touch files [ ! -w ${SSTATE_PKG} ]
will always return true and the touch can fail
when the real user don't have permission or
in readonly filesystem.

As the documentation refers, the file test operator "-w"
check if the file has write permission (for the user running the test).

We can avoid this test running the touch and mask any return errors
that we have.

Signed-off-by: Jose Quaresma <quaresma.jose@gmail.com>
---

v2: redirect stderr to /dev/null to avoid messages in the log

 meta/classes/sstate.bbclass | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/meta/classes/sstate.bbclass b/meta/classes/sstate.bbclass
index 3c179259e7..146f56ea2d 100644
--- a/meta/classes/sstate.bbclass
+++ b/meta/classes/sstate.bbclass
@@ -830,7 +830,7 @@ sstate_task_postfunc[dirs] = "${WORKDIR}"
 sstate_create_package () {
 	# Exit early if it already exists
 	if [ -e ${SSTATE_PKG} ]; then
-		[ ! -w ${SSTATE_PKG} ] || touch ${SSTATE_PKG}
+		touch ${SSTATE_PKG} 2>/dev/null || true
 		return
 	fi
 
@@ -865,7 +865,7 @@ sstate_create_package () {
 	else
 		rm $TFILE
 	fi
-	[ ! -w ${SSTATE_PKG} ] || touch ${SSTATE_PKG}
+	touch ${SSTATE_PKG} 2>/dev/null || true
 }
 
 python sstate_sign_package () {
-- 
2.33.1



^ permalink raw reply related	[flat|nested] 4+ messages in thread

* RE: [OE-core] [PATCH v2] sstate: fix touching files inside pseudo
  2021-10-20 17:25 [PATCH v2] sstate: fix touching files inside pseudo Jose Quaresma
@ 2021-10-25 14:28 ` Peter Kjellerstedt
  2021-10-26  9:05   ` Jose Quaresma
  0 siblings, 1 reply; 4+ messages in thread
From: Peter Kjellerstedt @ 2021-10-25 14:28 UTC (permalink / raw)
  To: Mittal, Anuj; +Cc: Jose Quaresma, openembedded-core@lists.openembedded.org

> -----Original Message-----
> From: openembedded-core@lists.openembedded.org <openembedded-
> core@lists.openembedded.org> On Behalf Of Jose Quaresma
> Sent: den 20 oktober 2021 19:26
> To: openembedded-core@lists.openembedded.org
> Cc: Jose Quaresma <quaresma.jose@gmail.com>
> Subject: [OE-core] [PATCH v2] sstate: fix touching files inside pseudo
> 
> running the 'id' command inside the sstate_create_package
> function shows that this funcion run inside the pseudo:
> 
>  uid=0(root) gid=0(root) groups=0(root)
> 
> The check for touch files [ ! -w ${SSTATE_PKG} ]
> will always return true and the touch can fail
> when the real user don't have permission or
> in readonly filesystem.
> 
> As the documentation refers, the file test operator "-w"
> check if the file has write permission (for the user running the test).
> 
> We can avoid this test running the touch and mask any return errors
> that we have.
> 
> Signed-off-by: Jose Quaresma <quaresma.jose@gmail.com>
> ---
> 
> v2: redirect stderr to /dev/null to avoid messages in the log
> 
>  meta/classes/sstate.bbclass | 4 ++--
>  1 file changed, 2 insertions(+), 2 deletions(-)
> 
> diff --git a/meta/classes/sstate.bbclass b/meta/classes/sstate.bbclass
> index 3c179259e7..146f56ea2d 100644
> --- a/meta/classes/sstate.bbclass
> +++ b/meta/classes/sstate.bbclass
> @@ -830,7 +830,7 @@ sstate_task_postfunc[dirs] = "${WORKDIR}"
>  sstate_create_package () {
>  	# Exit early if it already exists
>  	if [ -e ${SSTATE_PKG} ]; then
> -		[ ! -w ${SSTATE_PKG} ] || touch ${SSTATE_PKG}
> +		touch ${SSTATE_PKG} 2>/dev/null || true
>  		return
>  	fi
> 
> @@ -865,7 +865,7 @@ sstate_create_package () {
>  	else
>  		rm $TFILE
>  	fi
> -	[ ! -w ${SSTATE_PKG} ] || touch ${SSTATE_PKG}
> +	touch ${SSTATE_PKG} 2>/dev/null || true
>  }
> 
>  python sstate_sign_package () {
> --
> 2.33.1

Can this please be backported to Hardknott and Honister now that 
it has been accepted for master?

//Peter



^ permalink raw reply	[flat|nested] 4+ messages in thread

* Re: [OE-core] [PATCH v2] sstate: fix touching files inside pseudo
  2021-10-25 14:28 ` [OE-core] " Peter Kjellerstedt
@ 2021-10-26  9:05   ` Jose Quaresma
  2021-10-26 14:05     ` Steve Sakoman
  0 siblings, 1 reply; 4+ messages in thread
From: Jose Quaresma @ 2021-10-26  9:05 UTC (permalink / raw)
  To: Peter Kjellerstedt; +Cc: Mittal, Anuj, openembedded-core@lists.openembedded.org

[-- Attachment #1: Type: text/plain, Size: 2437 bytes --]

I have found this bug on the dunfell branch, can it be backported to
dunfell too?

Jose

Peter Kjellerstedt <peter.kjellerstedt@axis.com> escreveu no dia segunda,
25/10/2021 à(s) 15:28:

> > -----Original Message-----
> > From: openembedded-core@lists.openembedded.org <openembedded-
> > core@lists.openembedded.org> On Behalf Of Jose Quaresma
> > Sent: den 20 oktober 2021 19:26
> > To: openembedded-core@lists.openembedded.org
> > Cc: Jose Quaresma <quaresma.jose@gmail.com>
> > Subject: [OE-core] [PATCH v2] sstate: fix touching files inside pseudo
> >
> > running the 'id' command inside the sstate_create_package
> > function shows that this funcion run inside the pseudo:
> >
> >  uid=0(root) gid=0(root) groups=0(root)
> >
> > The check for touch files [ ! -w ${SSTATE_PKG} ]
> > will always return true and the touch can fail
> > when the real user don't have permission or
> > in readonly filesystem.
> >
> > As the documentation refers, the file test operator "-w"
> > check if the file has write permission (for the user running the test).
> >
> > We can avoid this test running the touch and mask any return errors
> > that we have.
> >
> > Signed-off-by: Jose Quaresma <quaresma.jose@gmail.com>
> > ---
> >
> > v2: redirect stderr to /dev/null to avoid messages in the log
> >
> >  meta/classes/sstate.bbclass | 4 ++--
> >  1 file changed, 2 insertions(+), 2 deletions(-)
> >
> > diff --git a/meta/classes/sstate.bbclass b/meta/classes/sstate.bbclass
> > index 3c179259e7..146f56ea2d 100644
> > --- a/meta/classes/sstate.bbclass
> > +++ b/meta/classes/sstate.bbclass
> > @@ -830,7 +830,7 @@ sstate_task_postfunc[dirs] = "${WORKDIR}"
> >  sstate_create_package () {
> >       # Exit early if it already exists
> >       if [ -e ${SSTATE_PKG} ]; then
> > -             [ ! -w ${SSTATE_PKG} ] || touch ${SSTATE_PKG}
> > +             touch ${SSTATE_PKG} 2>/dev/null || true
> >               return
> >       fi
> >
> > @@ -865,7 +865,7 @@ sstate_create_package () {
> >       else
> >               rm $TFILE
> >       fi
> > -     [ ! -w ${SSTATE_PKG} ] || touch ${SSTATE_PKG}
> > +     touch ${SSTATE_PKG} 2>/dev/null || true
> >  }
> >
> >  python sstate_sign_package () {
> > --
> > 2.33.1
>
> Can this please be backported to Hardknott and Honister now that
> it has been accepted for master?
>
> //Peter
>
>

-- 
Best regards,

José Quaresma

[-- Attachment #2: Type: text/html, Size: 3611 bytes --]

^ permalink raw reply	[flat|nested] 4+ messages in thread

* Re: [OE-core] [PATCH v2] sstate: fix touching files inside pseudo
  2021-10-26  9:05   ` Jose Quaresma
@ 2021-10-26 14:05     ` Steve Sakoman
  0 siblings, 0 replies; 4+ messages in thread
From: Steve Sakoman @ 2021-10-26 14:05 UTC (permalink / raw)
  To: Jose Quaresma
  Cc: Peter Kjellerstedt, Mittal, Anuj,
	openembedded-core@lists.openembedded.org

On Mon, Oct 25, 2021 at 11:06 PM Jose Quaresma <quaresma.jose@gmail.com> wrote:
>
> I have found this bug on the dunfell branch, can it be backported to dunfell too?

I'll add it to my testing queue.

Steve

>
> Jose
>
> Peter Kjellerstedt <peter.kjellerstedt@axis.com> escreveu no dia segunda, 25/10/2021 à(s) 15:28:
>>
>> > -----Original Message-----
>> > From: openembedded-core@lists.openembedded.org <openembedded-
>> > core@lists.openembedded.org> On Behalf Of Jose Quaresma
>> > Sent: den 20 oktober 2021 19:26
>> > To: openembedded-core@lists.openembedded.org
>> > Cc: Jose Quaresma <quaresma.jose@gmail.com>
>> > Subject: [OE-core] [PATCH v2] sstate: fix touching files inside pseudo
>> >
>> > running the 'id' command inside the sstate_create_package
>> > function shows that this funcion run inside the pseudo:
>> >
>> >  uid=0(root) gid=0(root) groups=0(root)
>> >
>> > The check for touch files [ ! -w ${SSTATE_PKG} ]
>> > will always return true and the touch can fail
>> > when the real user don't have permission or
>> > in readonly filesystem.
>> >
>> > As the documentation refers, the file test operator "-w"
>> > check if the file has write permission (for the user running the test).
>> >
>> > We can avoid this test running the touch and mask any return errors
>> > that we have.
>> >
>> > Signed-off-by: Jose Quaresma <quaresma.jose@gmail.com>
>> > ---
>> >
>> > v2: redirect stderr to /dev/null to avoid messages in the log
>> >
>> >  meta/classes/sstate.bbclass | 4 ++--
>> >  1 file changed, 2 insertions(+), 2 deletions(-)
>> >
>> > diff --git a/meta/classes/sstate.bbclass b/meta/classes/sstate.bbclass
>> > index 3c179259e7..146f56ea2d 100644
>> > --- a/meta/classes/sstate.bbclass
>> > +++ b/meta/classes/sstate.bbclass
>> > @@ -830,7 +830,7 @@ sstate_task_postfunc[dirs] = "${WORKDIR}"
>> >  sstate_create_package () {
>> >       # Exit early if it already exists
>> >       if [ -e ${SSTATE_PKG} ]; then
>> > -             [ ! -w ${SSTATE_PKG} ] || touch ${SSTATE_PKG}
>> > +             touch ${SSTATE_PKG} 2>/dev/null || true
>> >               return
>> >       fi
>> >
>> > @@ -865,7 +865,7 @@ sstate_create_package () {
>> >       else
>> >               rm $TFILE
>> >       fi
>> > -     [ ! -w ${SSTATE_PKG} ] || touch ${SSTATE_PKG}
>> > +     touch ${SSTATE_PKG} 2>/dev/null || true
>> >  }
>> >
>> >  python sstate_sign_package () {
>> > --
>> > 2.33.1
>>
>> Can this please be backported to Hardknott and Honister now that
>> it has been accepted for master?
>>
>> //Peter
>>
>
>
> --
> Best regards,
>
> José Quaresma
>
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>


^ permalink raw reply	[flat|nested] 4+ messages in thread

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Thread overview: 4+ messages (download: mbox.gz follow: Atom feed
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2021-10-20 17:25 [PATCH v2] sstate: fix touching files inside pseudo Jose Quaresma
2021-10-25 14:28 ` [OE-core] " Peter Kjellerstedt
2021-10-26  9:05   ` Jose Quaresma
2021-10-26 14:05     ` Steve Sakoman

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