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Message-ID: <CAHC9VhRWUvG6DwiPn4o+vt=fgGfY+JmG8m78M8CeyGYxF2yRXQ@mail.gmail.com> Date: Mon, 1 Apr 2019 10:49:54 -0400 From: Paul Moore <paul@...l-moore.com> To: Richard Guy Briggs <rgb@...hat.com> Cc: containers@...ts.linux-foundation.org, linux-api@...r.kernel.org, Linux-Audit Mailing List <linux-audit@...hat.com>, linux-fsdevel@...r.kernel.org, LKML <linux-kernel@...r.kernel.org>, netdev@...r.kernel.org, netfilter-devel@...r.kernel.org, sgrubb@...hat.com, omosnace@...hat.com, dhowells@...hat.com, simo@...hat.com, Eric Paris <eparis@...isplace.org>, Serge Hallyn <serge@...lyn.com>, ebiederm@...ssion.com, nhorman@...driver.com Subject: Re: [PATCH ghak90 V5 06/10] audit: add support for non-syscall auxiliary records On Fri, Mar 15, 2019 at 2:34 PM Richard Guy Briggs <rgb@...hat.com> wrote: > Standalone audit records have the timestamp and serial number generated > on the fly and as such are unique, making them standalone. This new > function audit_alloc_local() generates a local audit context that will > be used only for a standalone record and its auxiliary record(s). The > context is discarded immediately after the local associated records are > produced. > > Signed-off-by: Richard Guy Briggs <rgb@...hat.com> > Acked-by: Serge Hallyn <serge@...lyn.com> > --- > include/linux/audit.h | 8 ++++++++ > kernel/audit.h | 1 + > kernel/auditsc.c | 35 ++++++++++++++++++++++++++++++----- > 3 files changed, 39 insertions(+), 5 deletions(-) ... > diff --git a/include/linux/audit.h b/include/linux/audit.h > index ebd6625ca80e..6db5aba7cc01 100644 > --- a/include/linux/audit.h > +++ b/include/linux/audit.h > @@ -285,6 +285,8 @@ static inline void audit_log_contid(struct audit_context *context, u64 contid) > > /* These are defined in auditsc.c */ > /* Public API */ > +extern struct audit_context *audit_alloc_local(gfp_t gfpflags); > +extern void audit_free_context(struct audit_context *context); > extern void __audit_syscall_entry(int major, unsigned long a0, unsigned long a1, > unsigned long a2, unsigned long a3); > extern void __audit_syscall_exit(int ret_success, long ret_value); > @@ -512,6 +514,12 @@ static inline void audit_fanotify(unsigned int response) > extern int audit_n_rules; > extern int audit_signals; > #else /* CONFIG_AUDITSYSCALL */ > +static inline struct audit_context *audit_alloc_local(gfp_t gfpflags) > +{ > + return NULL; > +} > +static inline void audit_free_context(struct audit_context *context) > +{ } > static inline void audit_syscall_entry(int major, unsigned long a0, > unsigned long a1, unsigned long a2, > unsigned long a3) > diff --git a/kernel/audit.h b/kernel/audit.h > index c5ac6436317e..2a1a8b8a8019 100644 > --- a/kernel/audit.h > +++ b/kernel/audit.h > @@ -111,6 +111,7 @@ struct audit_proctitle { > struct audit_context { > int dummy; /* must be the first element */ > int in_syscall; /* 1 if task is in a syscall */ > + bool local; /* local context needed */ It's very possible I've missed it, but "local" never gets used in any meaningful way in this patchset does it? > enum audit_state state, current_state; > unsigned int serial; /* serial number for record */ > int major; /* syscall number */ -- paul moore www.paul-moore.com
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