[PATCH] man/man2/clone.2: Document CLONE_NEWPID and CLONE_NEWUSER flag

[PATCH] man/man2/clone.2: Document CLONE_NEWPID and CLONE_NEWUSER flag

[devhoodit]

CLONE_NEWPID and CLONE_PARENT can be used together, but not CLONE_THREAD.  Similarly, CLONE_NEWUSER and CLONE_PARENT can be used together, but not CLONE_THREAD.
This was discussed here: <https://lore.kernel.org/linux-man/06febfb3-e2e2-4363-bc34-83a07692144f@redhat.com/T/>
Relevant code: <https://github.com/torvalds/linux/blob/219d54332a09e8d8741c1e1982f5eae56099de85/kernel/fork.c#L1815>

Cc: Carlos O'Donell <carlos@redhat.com>
Cc: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: devhoodit <devhoodit@gmail.com>
---
 man/man2/clone.2 | 9 +++------
 1 file changed, 3 insertions(+), 6 deletions(-)

diff --git a/man/man2/clone.2 b/man/man2/clone.2
index 1b74e4c92..b9561125a 100644
--- a/man/man2/clone.2
+++ b/man/man2/clone.2
@@ -776,9 +776,7 @@ .SS The flags mask
 no privileges are needed to create a user namespace.
 .IP
 This flag can't be specified in conjunction with
-.B CLONE_THREAD
-or
-.BR CLONE_PARENT .
+.BR CLONE_THREAD .
 For security reasons,
 .\" commit e66eded8309ebf679d3d3c1f5820d1f2ca332c71
 .\" https://lwn.net/Articles/543273/
@@ -1319,11 +1317,10 @@ .SH ERRORS
 mask.
 .TP
 .B EINVAL
+Both
 .B CLONE_NEWPID
-and one (or both) of
+and
 .B CLONE_THREAD
-or
-.B CLONE_PARENT
 were specified in the
 .I flags
 mask.
-- 
2.49.0

Re: [PATCH] man/man2/clone.2: Document CLONE_NEWPID and CLONE_NEWUSER flag

[Alejandro Colomar]

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Hi Carlos,

On Mon, Apr 21, 2025 at 04:16:03AM +0900, devhoodit wrote:
> CLONE_NEWPID and CLONE_PARENT can be used together, but not CLONE_THREAD.  Similarly, CLONE_NEWUSER and CLONE_PARENT can be used together, but not CLONE_THREAD.
> This was discussed here: <https://lore.kernel.org/linux-man/06febfb3-e2e2-4363-bc34-83a07692144f@redhat.com/T/>
> Relevant code: <https://github.com/torvalds/linux/blob/219d54332a09e8d8741c1e1982f5eae56099de85/kernel/fork.c#L1815>
> 
> Cc: Carlos O'Donell <carlos@redhat.com>
> Cc: Andrew Morton <akpm@linux-foundation.org>
> Signed-off-by: devhoodit <devhoodit@gmail.com>

Could you please review this patch?


Have a lovely night!
Alex

> ---
>  man/man2/clone.2 | 9 +++------
>  1 file changed, 3 insertions(+), 6 deletions(-)
> 
> diff --git a/man/man2/clone.2 b/man/man2/clone.2
> index 1b74e4c92..b9561125a 100644
> --- a/man/man2/clone.2
> +++ b/man/man2/clone.2
> @@ -776,9 +776,7 @@ .SS The flags mask
>  no privileges are needed to create a user namespace.
>  .IP
>  This flag can't be specified in conjunction with
> -.B CLONE_THREAD
> -or
> -.BR CLONE_PARENT .
> +.BR CLONE_THREAD .
>  For security reasons,
>  .\" commit e66eded8309ebf679d3d3c1f5820d1f2ca332c71
>  .\" https://lwn.net/Articles/543273/
> @@ -1319,11 +1317,10 @@ .SH ERRORS
>  mask.
>  .TP
>  .B EINVAL
> +Both
>  .B CLONE_NEWPID
> -and one (or both) of
> +and
>  .B CLONE_THREAD
> -or
> -.B CLONE_PARENT
>  were specified in the
>  .I flags
>  mask.
> -- 
> 2.49.0
> 

-- 
<https://www.alejandro-colomar.es/>

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Re: [PATCH] man/man2/clone.2: Document CLONE_NEWPID and CLONE_NEWUSER flag

[hoodit dev]

Hi, Alejandro Colomar and Carlos

Just a friendly ping to check if you had a chance to review this patch.

Thanks

2025년 5월 2일 (금) 오전 6:30, Alejandro Colomar <alx@kernel.org>님이 작성:
>
> Hi Carlos,
>
> On Mon, Apr 21, 2025 at 04:16:03AM +0900, devhoodit wrote:
> > CLONE_NEWPID and CLONE_PARENT can be used together, but not CLONE_THREAD.  Similarly, CLONE_NEWUSER and CLONE_PARENT can be used together, but not CLONE_THREAD.
> > This was discussed here: <https://lore.kernel.org/linux-man/06febfb3-e2e2-4363-bc34-83a07692144f@redhat.com/T/>
> > Relevant code: <https://github.com/torvalds/linux/blob/219d54332a09e8d8741c1e1982f5eae56099de85/kernel/fork.c#L1815>
> >
> > Cc: Carlos O'Donell <carlos@redhat.com>
> > Cc: Andrew Morton <akpm@linux-foundation.org>
> > Signed-off-by: devhoodit <devhoodit@gmail.com>
>
> Could you please review this patch?
>
>
> Have a lovely night!
> Alex
>
> > ---
> >  man/man2/clone.2 | 9 +++------
> >  1 file changed, 3 insertions(+), 6 deletions(-)
> >
> > diff --git a/man/man2/clone.2 b/man/man2/clone.2
> > index 1b74e4c92..b9561125a 100644
> > --- a/man/man2/clone.2
> > +++ b/man/man2/clone.2
> > @@ -776,9 +776,7 @@ .SS The flags mask
> >  no privileges are needed to create a user namespace.
> >  .IP
> >  This flag can't be specified in conjunction with
> > -.B CLONE_THREAD
> > -or
> > -.BR CLONE_PARENT .
> > +.BR CLONE_THREAD .
> >  For security reasons,
> >  .\" commit e66eded8309ebf679d3d3c1f5820d1f2ca332c71
> >  .\" https://lwn.net/Articles/543273/
> > @@ -1319,11 +1317,10 @@ .SH ERRORS
> >  mask.
> >  .TP
> >  .B EINVAL
> > +Both
> >  .B CLONE_NEWPID
> > -and one (or both) of
> > +and
> >  .B CLONE_THREAD
> > -or
> > -.B CLONE_PARENT
> >  were specified in the
> >  .I flags
> >  mask.
> > --
> > 2.49.0
> >
>
> --
> <https://www.alejandro-colomar.es/>

Re: [PATCH] man/man2/clone.2: Document CLONE_NEWPID and CLONE_NEWUSER flag

[Alejandro Colomar]

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Hi,

On Wed, Oct 29, 2025 at 06:00:50PM +0900, hoodit dev wrote:
> Hi, Alejandro Colomar and Carlos
> 
> Just a friendly ping to check if you had a chance to review this patch.

I don't know enough of clone(2) to review this.  I'll wait for Carlos's
review.


Have a lovely day!
Alex

> 
> Thanks
> 
> 2025년 5월 2일 (금) 오전 6:30, Alejandro Colomar <alx@kernel.org>님이 작성:
> >
> > Hi Carlos,
> >
> > On Mon, Apr 21, 2025 at 04:16:03AM +0900, devhoodit wrote:
> > > CLONE_NEWPID and CLONE_PARENT can be used together, but not CLONE_THREAD.  Similarly, CLONE_NEWUSER and CLONE_PARENT can be used together, but not CLONE_THREAD.
> > > This was discussed here: <https://lore.kernel.org/linux-man/06febfb3-e2e2-4363-bc34-83a07692144f@redhat.com/T/>
> > > Relevant code: <https://github.com/torvalds/linux/blob/219d54332a09e8d8741c1e1982f5eae56099de85/kernel/fork.c#L1815>
> > >
> > > Cc: Carlos O'Donell <carlos@redhat.com>
> > > Cc: Andrew Morton <akpm@linux-foundation.org>
> > > Signed-off-by: devhoodit <devhoodit@gmail.com>
> >
> > Could you please review this patch?
> >
> >
> > Have a lovely night!
> > Alex
> >
> > > ---
> > >  man/man2/clone.2 | 9 +++------
> > >  1 file changed, 3 insertions(+), 6 deletions(-)
> > >
> > > diff --git a/man/man2/clone.2 b/man/man2/clone.2
> > > index 1b74e4c92..b9561125a 100644
> > > --- a/man/man2/clone.2
> > > +++ b/man/man2/clone.2
> > > @@ -776,9 +776,7 @@ .SS The flags mask
> > >  no privileges are needed to create a user namespace.
> > >  .IP
> > >  This flag can't be specified in conjunction with
> > > -.B CLONE_THREAD
> > > -or
> > > -.BR CLONE_PARENT .
> > > +.BR CLONE_THREAD .
> > >  For security reasons,
> > >  .\" commit e66eded8309ebf679d3d3c1f5820d1f2ca332c71
> > >  .\" https://lwn.net/Articles/543273/
> > > @@ -1319,11 +1317,10 @@ .SH ERRORS
> > >  mask.
> > >  .TP
> > >  .B EINVAL
> > > +Both
> > >  .B CLONE_NEWPID
> > > -and one (or both) of
> > > +and
> > >  .B CLONE_THREAD
> > > -or
> > > -.B CLONE_PARENT
> > >  were specified in the
> > >  .I flags
> > >  mask.
> > > --
> > > 2.49.0
> > >
> >
> > --
> > <https://www.alejandro-colomar.es/>
> 

-- 
<https://www.alejandro-colomar.es>
Use port 80 (that is, <...:80/>).

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