On Mon, Apr 9, 2018 at 7:34 PM, Richard Guy Briggs <rgb(a)redhat.com&gt; wrote: > There were two formats of the audit MAC_STATUS record, one of which was more > standard than the other. One listed enforcing status changes and the > other listed enabled status changes with a non-standard label. In > addition, the record was missing information about which LSM was > responsible and the operation's completion status. While this record is > only issued on success, the parser expects the res= field to be present. > > old enforcing/permissive: > type=MAC_STATUS msg=audit(1523312831.378:24514): enforcing=0 old_enforcing=1 auid=0 ses=1 > old enable/disable: > type=MAC_STATUS msg=audit(1523312831.378:24514): selinux=0 auid=0 ses=1 > > List both sets of status and old values and add the lsm= field and the > res= field. > > Here is the new format: > type=MAC_STATUS msg=audit(1523293828.657:891): enforcing=0 old_enforcing=1 auid=0 ses=1 enabled=1 old-enabled=1 lsm=selinux res=1 > > This record already accompanied a SYSCALL record. > > See: https://github.com/linux-audit/audit-kernel/issues/46 > Signed-off-by: Richard Guy Briggs <rgb(a)redhat.com&gt; > --- > security/selinux/selinuxfs.c | 11 +++++++---- > 1 file changed, 7 insertions(+), 4 deletions(-) > > diff --git a/security/selinux/selinuxfs.c b/security/selinux/selinuxfs.c > index 00eed84..00b21b2 100644 > --- a/security/selinux/selinuxfs.c > +++ b/security/selinux/selinuxfs.c > @@ -145,10 +145,11 @@ static ssize_t sel_write_enforce(struct file *file, const char __user *buf, > if (length) > goto out; > audit_log(current->audit_context, GFP_KERNEL, AUDIT_MAC_STATUS, > - "enforcing=%d old_enforcing=%d auid=%u ses=%u", > + "enforcing=%d old_enforcing=%d auid=%u ses=%u" > + " enabled=%d old-enabled=%d lsm=selinux res=1", > new_value, selinux_enforcing, > from_kuid(&init_user_ns, audit_get_loginuid(current)), > - audit_get_sessionid(current)); > + audit_get_sessionid(current), selinux_enabled, selinux_enabled); This looks fine. > selinux_enforcing = new_value; > if (selinux_enforcing) > avc_ss_reset(0); > @@ -272,9 +273,11 @@ static ssize_t sel_write_disable(struct file *file, const char __user *buf, > if (length) > goto out; > audit_log(current->audit_context, GFP_KERNEL, AUDIT_MAC_STATUS, > - "selinux=0 auid=%u ses=%u", > + "enforcing=%d old_enforcing=%d auid=%u ses=%u" > + " enabled=%d old-enabled=%d lsm=selinux res=1", > + selinux_enforcing, selinux_enforcing, > from_kuid(&init_user_ns, audit_get_loginuid(current)), > - audit_get_sessionid(current)); > + audit_get_sessionid(current), 0, 1); It needs to be said again that I'm opposed to changes like this: inserting new fields, removing fields, or otherwise changing the format in ways that aren't strictly the addition of new fields to the end of a record is a Bad Thing. However, there are exceptions (there are *always* exceptions), and this seems like a reasonable change that shouldn't negatively affect anyone. I'll merge this once the merge window comes to a close (we are going to need to base selinux/next on v4.17-rc1).

> } > > length = count; > -- > 1.8.3.1

On 2018-04-17 17:59, Paul Moore wrote: > On Wed, Apr 11, 2018 at 5:08 PM, Paul Moore <paul(a)paul-moore.com&gt; wrote: > > On Mon, Apr 9, 2018 at 7:34 PM, Richard Guy Briggs <rgb(a)redhat.com&gt; wrote: > >> There were two formats of the audit MAC_STATUS record, one of which was more > >> standard than the other. One listed enforcing status changes and the > >> other listed enabled status changes with a non-standard label. In > >> addition, the record was missing information about which LSM was > >> responsible and the operation's completion status. While this record is > >> only issued on success, the parser expects the res= field to be present. > >> > >> old enforcing/permissive: > >> type=MAC_STATUS msg=audit(1523312831.378:24514): enforcing=0 old_enforcing=1 auid=0 ses=1 > >> old enable/disable: > >> type=MAC_STATUS msg=audit(1523312831.378:24514): selinux=0 auid=0 ses=1 > >> > >> List both sets of status and old values and add the lsm= field and the > >> res= field. > >> > >> Here is the new format: > >> type=MAC_STATUS msg=audit(1523293828.657:891): enforcing=0 old_enforcing=1 auid=0 ses=1 enabled=1 old-enabled=1 lsm=selinux res=1 > >> > >> This record already accompanied a SYSCALL record. > >> > >> See: https://github.com/linux-audit/audit-kernel/issues/46 > >> Signed-off-by: Richard Guy Briggs <rgb(a)redhat.com&gt; > >> --- > >> security/selinux/selinuxfs.c | 11 +++++++---- > >> 1 file changed, 7 insertions(+), 4 deletions(-) > >> > >> diff --git a/security/selinux/selinuxfs.c b/security/selinux/selinuxfs.c > >> index 00eed84..00b21b2 100644 > >> --- a/security/selinux/selinuxfs.c > >> +++ b/security/selinux/selinuxfs.c > >> @@ -145,10 +145,11 @@ static ssize_t sel_write_enforce(struct file *file, const char __user *buf, > >> if (length) > >> goto out; > >> audit_log(current->audit_context, GFP_KERNEL, AUDIT_MAC_STATUS, > >> - "enforcing=%d old_enforcing=%d auid=%u ses=%u", > >> + "enforcing=%d old_enforcing=%d auid=%u ses=%u" > >> + " enabled=%d old-enabled=%d lsm=selinux res=1", > >> new_value, selinux_enforcing, > >> from_kuid(&init_user_ns, audit_get_loginuid(current)), > >> - audit_get_sessionid(current)); > >> + audit_get_sessionid(current), selinux_enabled, selinux_enabled); > > > > This looks fine. > > > >> selinux_enforcing = new_value; > >> if (selinux_enforcing) > >> avc_ss_reset(0); > >> @@ -272,9 +273,11 @@ static ssize_t sel_write_disable(struct file *file, const char __user *buf, > >> if (length) > >> goto out; > >> audit_log(current->audit_context, GFP_KERNEL, AUDIT_MAC_STATUS, > >> - "selinux=0 auid=%u ses=%u", > >> + "enforcing=%d old_enforcing=%d auid=%u ses=%u" > >> + " enabled=%d old-enabled=%d lsm=selinux res=1", > >> + selinux_enforcing, selinux_enforcing, > >> from_kuid(&init_user_ns, audit_get_loginuid(current)), > >> - audit_get_sessionid(current)); > >> + audit_get_sessionid(current), 0, 1); > > > > It needs to be said again that I'm opposed to changes like this: > > inserting new fields, removing fields, or otherwise changing the > > format in ways that aren't strictly the addition of new fields to the > > end of a record is a Bad Thing. However, there are exceptions (there > > are *always* exceptions), and this seems like a reasonable change that > > shouldn't negatively affect anyone. > > > > I'll merge this once the merge window comes to a close (we are going > > to need to base selinux/next on v4.17-rc1). > > Merged into selinux/next, although I should mention that there were > some actual code changes because of the SELinux state consolidation > patches that went into v4.17. The changes were small but please take > a look and make sure everything still looks okay to you. Ok, that was a bit disruptive, but looks ok to me.

2018-04-10 1:34 GMT+02:00 Richard Guy Briggs <rgb(a)redhat.com&gt;: > There were two formats of the audit MAC_STATUS record, one of which was more > standard than the other. One listed enforcing status changes and the > other listed enabled status changes with a non-standard label. In > addition, the record was missing information about which LSM was > responsible and the operation's completion status. While this record is > only issued on success, the parser expects the res= field to be present. > > old enforcing/permissive: > type=MAC_STATUS msg=audit(1523312831.378:24514): enforcing=0 old_enforcing=1 auid=0 ses=1 > old enable/disable: > type=MAC_STATUS msg=audit(1523312831.378:24514): selinux=0 auid=0 ses=1 > > List both sets of status and old values and add the lsm= field and the > res= field. > > Here is the new format: > type=MAC_STATUS msg=audit(1523293828.657:891): enforcing=0 old_enforcing=1 auid=0 ses=1 enabled=1 old-enabled=1 lsm=selinux res=1 > > This record already accompanied a SYSCALL record. > > See: https://github.com/linux-audit/audit-kernel/issues/46 > Signed-off-by: Richard Guy Briggs <rgb(a)redhat.com&gt; > --- > security/selinux/selinuxfs.c | 11 +++++++---- > 1 file changed, 7 insertions(+), 4 deletions(-) > > diff --git a/security/selinux/selinuxfs.c b/security/selinux/selinuxfs.c > index 00eed84..00b21b2 100644 > --- a/security/selinux/selinuxfs.c > +++ b/security/selinux/selinuxfs.c > @@ -145,10 +145,11 @@ static ssize_t sel_write_enforce(struct file *file, const char __user *buf, > if (length) > goto out; > audit_log(current->audit_context, GFP_KERNEL, AUDIT_MAC_STATUS, > - "enforcing=%d old_enforcing=%d auid=%u ses=%u", > + "enforcing=%d old_enforcing=%d auid=%u ses=%u" > + " enabled=%d old-enabled=%d lsm=selinux res=1", This is just a tiny nit but why does "old_enforcing" use an underscore and "old-enabled" a dash? Shouldn't the style be consistent across fields?

Just my two cents...

> new_value, selinux_enforcing, > from_kuid(&init_user_ns, audit_get_loginuid(current)), > - audit_get_sessionid(current)); > + audit_get_sessionid(current), selinux_enabled, selinux_enabled); > selinux_enforcing = new_value; > if (selinux_enforcing) > avc_ss_reset(0); > @@ -272,9 +273,11 @@ static ssize_t sel_write_disable(struct file *file, const char __user *buf, > if (length) > goto out; > audit_log(current->audit_context, GFP_KERNEL, AUDIT_MAC_STATUS, > - "selinux=0 auid=%u ses=%u", > + "enforcing=%d old_enforcing=%d auid=%u ses=%u" > + " enabled=%d old-enabled=%d lsm=selinux res=1", > + selinux_enforcing, selinux_enforcing, ^ also here > from_kuid(&init_user_ns, audit_get_loginuid(current)), > - audit_get_sessionid(current)); > + audit_get_sessionid(current), 0, 1); > } > > length = count; Ondrej Mosnacek <omosnace at redhat dot com>

On 2018-04-16 09:26, Ondrej Mosnacek wrote: > 2018-04-10 1:34 GMT+02:00 Richard Guy Briggs <rgb(a)redhat.com&gt;: > > There were two formats of the audit MAC_STATUS record, one of which was > > more standard than the other. One listed enforcing status changes and > > the other listed enabled status changes with a non-standard label. In > > addition, the record was missing information about which LSM was > > responsible and the operation's completion status. While this record > > is > > only issued on success, the parser expects the res= field to be > > present. > > > > old enforcing/permissive: > > type=MAC_STATUS msg=audit(1523312831.378:24514): enforcing=0 > > old_enforcing=1 auid=0 ses=1 old enable/disable: > > type=MAC_STATUS msg=audit(1523312831.378:24514): selinux=0 auid=0 ses=1 > > > > List both sets of status and old values and add the lsm= field and the > > res= field. > > > > Here is the new format: > > type=MAC_STATUS msg=audit(1523293828.657:891): enforcing=0 > > old_enforcing=1 auid=0 ses=1 enabled=1 old-enabled=1 lsm=selinux res=1 > > > > This record already accompanied a SYSCALL record. > > > > See: https://github.com/linux-audit/audit-kernel/issues/46 > > Signed-off-by: Richard Guy Briggs <rgb(a)redhat.com&gt; > > --- > > > > security/selinux/selinuxfs.c | 11 +++++++---- > > 1 file changed, 7 insertions(+), 4 deletions(-) > > > > diff --git a/security/selinux/selinuxfs.c > > b/security/selinux/selinuxfs.c > > index 00eed84..00b21b2 100644 > > --- a/security/selinux/selinuxfs.c > > +++ b/security/selinux/selinuxfs.c > > @@ -145,10 +145,11 @@ static ssize_t sel_write_enforce(struct file > > *file, const char __user *buf,> > > > if (length) > > > > goto out; > > > > audit_log(current->audit_context, GFP_KERNEL, > > AUDIT_MAC_STATUS, > > > > - "enforcing=%d old_enforcing=%d auid=%u ses=%u", > > + "enforcing=%d old_enforcing=%d auid=%u ses=%u" > > + " enabled=%d old-enabled=%d lsm=selinux res=1", > > This is just a tiny nit but why does "old_enforcing" use an underscore > and "old-enabled" a dash? Shouldn't the style be consistent across > fields?

Yes, but my understanding is a preference for underscore, and not to change existing field names. Steve?

> Just my two cents... These details are worth noticing, thank you. > > new_value, selinux_enforcing, > > from_kuid(&init_user_ns, > > audit_get_loginuid(current)), > > > > - audit_get_sessionid(current)); > > + audit_get_sessionid(current), selinux_enabled, > > selinux_enabled);> > > > selinux_enforcing = new_value; > > if (selinux_enforcing) > > > > avc_ss_reset(0); > > > > @@ -272,9 +273,11 @@ static ssize_t sel_write_disable(struct file > > *file, const char __user *buf,> > > > if (length) > > > > goto out; > > > > audit_log(current->audit_context, GFP_KERNEL, > > AUDIT_MAC_STATUS, > > > > - "selinux=0 auid=%u ses=%u", > > + "enforcing=%d old_enforcing=%d auid=%u ses=%u" > > + " enabled=%d old-enabled=%d lsm=selinux res=1", > > + selinux_enforcing, selinux_enforcing, > > ^ also here > > > from_kuid(&init_user_ns, > > audit_get_loginuid(current)), > > > > - audit_get_sessionid(current)); > > + audit_get_sessionid(current), 0, 1); > > > > } > > > > length = count; > > Ondrej Mosnacek <omosnace at redhat dot com> - RGB -- Richard Guy Briggs <rgb(a)redhat.com&gt; Sr. S/W Engineer, Kernel Security, Base Operating Systems Remote, Ottawa, Red Hat Canada IRC: rgb, SunRaycer Voice: +1.647.777.2635, Internal: (81) 32635 -- Linux-audit mailing list Linux-audit(a)redhat.com https://www.redhat.com/mailman/listinfo/linux-audit