On Wed, 2020-06-17 at 13:44 -0700, Lakshmi Ramasubramanian wrote: > Error code is not included in the audit messages logged by > the integrity subsystem. Add "errno" field in the audit messages > logged by the integrity subsystem and set the value to the error code > passed to integrity_audit_msg() in the "result" parameter. > > Sample audit messages: > > [ 6.284329] audit: type=1804 audit(1591756723.627:2): pid=1 uid=0 auid=4294967295 ses=4294967295 subj=kernel op=add_boot_aggregate cause=alloc_entry comm="swapper/0" name="boot_aggregate" res=0 errno=-12 > > [ 8.085456] audit: type=1802 audit(1592005947.297:9): pid=1 uid=0 auid=4294967295 ses=4294967295 subj=system_u:system_r:init_t:s0 op=policy_update cause=completed comm="systemd" res=1 errno=0 > > Signed-off-by: Lakshmi Ramasubramanian <nramas@xxxxxxxxxxxxxxxxxxx> > Suggested-by: Steve Grubb <sgrubb@xxxxxxxxxx> > --- > security/integrity/integrity_audit.c | 2 +- > 1 file changed, 1 insertion(+), 1 deletion(-) > > diff --git a/security/integrity/integrity_audit.c b/security/integrity/integrity_audit.c > index 5109173839cc..a265024f82f3 100644 > --- a/security/integrity/integrity_audit.c > +++ b/security/integrity/integrity_audit.c > @@ -53,6 +53,6 @@ void integrity_audit_msg(int audit_msgno, struct inode *inode, > audit_log_untrustedstring(ab, inode->i_sb->s_id); > audit_log_format(ab, " ino=%lu", inode->i_ino); > } > - audit_log_format(ab, " res=%d", !result); > + audit_log_format(ab, " res=%d errno=%d", !result, result); > audit_log_end(ab); > } For the reasons that I mentioned previously, unless others are willing to add their Reviewed-by tag not for the audit aspect in particular, but IMA itself, I'm not comfortable making this change all at once. Previously I suggested making the existing integrity_audit_msg() a wrapper for a new function with errno. Steve said, "We normally do not like to have fields that swing in and out ...", but said setting errno to 0 is fine. The original integrity_audit_msg() function would call the new function with errno set to 0. Mimi
