linux-fsdevel.vger.kernel.org archive mirror
 help / color / mirror / Atom feed
From: Richard Guy Briggs <rgb@redhat.com>
To: Linux-Audit Mailing List <linux-audit@redhat.com>,
	LKML <linux-kernel@vger.kernel.org>,
	linux-fsdevel@vger.kernel.org
Cc: Paul Moore <paul@paul-moore.com>,
	Eric Paris <eparis@parisplace.org>,
	Steve Grubb <sgrubb@redhat.com>,
	Richard Guy Briggs <rgb@redhat.com>,
	Alexander Viro <viro@zeniv.linux.org.uk>,
	Eric Paris <eparis@redhat.com>,
	x86@kernel.org, linux-alpha@vger.kernel.org,
	linux-ia64@vger.kernel.org, linux-parisc@vger.kernel.org,
	linuxppc-dev@lists.ozlabs.org, linux-s390@vger.kernel.org,
	sparclinux@vger.kernel.org, Aleksa Sarai <cyphar@cyphar.com>,
	Arnd Bergmann <arnd@kernel.org>
Subject: [PATCH v3 2/3] audit: add support for the openat2 syscall
Date: Fri, 30 Apr 2021 16:35:22 -0400	[thread overview]
Message-ID: <29e7068e8121aee22bdd9f4c9a6d08a1762b20e9.1619811762.git.rgb@redhat.com> (raw)
In-Reply-To: <cover.1619811762.git.rgb@redhat.com>

The openat2(2) syscall was added in kernel v5.6 with commit fddb5d430ad9
("open: introduce openat2(2) syscall")

Add the openat2(2) syscall to the audit syscall classifier.

See the github issue
https://github.com/linux-audit/audit-kernel/issues/67

Signed-off-by: Richard Guy Briggs <rgb@redhat.com>
---
 arch/alpha/kernel/audit.c          | 2 ++
 arch/ia64/kernel/audit.c           | 2 ++
 arch/parisc/kernel/audit.c         | 2 ++
 arch/parisc/kernel/compat_audit.c  | 2 ++
 arch/powerpc/kernel/audit.c        | 2 ++
 arch/powerpc/kernel/compat_audit.c | 2 ++
 arch/s390/kernel/audit.c           | 2 ++
 arch/s390/kernel/compat_audit.c    | 2 ++
 arch/sparc/kernel/audit.c          | 2 ++
 arch/sparc/kernel/compat_audit.c   | 2 ++
 arch/x86/ia32/audit.c              | 2 ++
 arch/x86/kernel/audit_64.c         | 2 ++
 include/linux/auditscm.h           | 1 +
 kernel/auditsc.c                   | 3 +++
 lib/audit.c                        | 4 ++++
 lib/compat_audit.c                 | 4 ++++
 16 files changed, 36 insertions(+)

diff --git a/arch/alpha/kernel/audit.c b/arch/alpha/kernel/audit.c
index 81cbd804e375..3ab04709784a 100644
--- a/arch/alpha/kernel/audit.c
+++ b/arch/alpha/kernel/audit.c
@@ -42,6 +42,8 @@ int audit_classify_syscall(int abi, unsigned syscall)
 		return AUDITSC_OPENAT;
 	case __NR_execve:
 		return AUDITSC_EXECVE;
+	case __NR_openat2:
+		return AUDITSC_OPENAT2;
 	default:
 		return AUDITSC_NATIVE;
 	}
diff --git a/arch/ia64/kernel/audit.c b/arch/ia64/kernel/audit.c
index dba6a74c9ab3..ec61f20ca61f 100644
--- a/arch/ia64/kernel/audit.c
+++ b/arch/ia64/kernel/audit.c
@@ -43,6 +43,8 @@ int audit_classify_syscall(int abi, unsigned syscall)
 		return AUDITSC_OPENAT;
 	case __NR_execve:
 		return AUDITSC_EXECVE;
+	case __NR_openat2:
+		return AUDITSC_OPENAT2;
 	default:
 		return AUDITSC_NATIVE;
 	}
diff --git a/arch/parisc/kernel/audit.c b/arch/parisc/kernel/audit.c
index 14244e83db75..f420b5552140 100644
--- a/arch/parisc/kernel/audit.c
+++ b/arch/parisc/kernel/audit.c
@@ -52,6 +52,8 @@ int audit_classify_syscall(int abi, unsigned syscall)
 		return AUDITSC_OPENAT;
 	case __NR_execve:
 		return AUDITSC_EXECVE;
+	case __NR_openat2:
+		return AUDITSC_OPENAT2;
 	default:
 		return AUDITSC_NATIVE;
 	}
diff --git a/arch/parisc/kernel/compat_audit.c b/arch/parisc/kernel/compat_audit.c
index 0c181bb39f34..02cfd9d1ebeb 100644
--- a/arch/parisc/kernel/compat_audit.c
+++ b/arch/parisc/kernel/compat_audit.c
@@ -36,6 +36,8 @@ int parisc32_classify_syscall(unsigned syscall)
 		return AUDITSC_OPENAT;
 	case __NR_execve:
 		return AUDITSC_EXECVE;
+	case __NR_openat2:
+		return AUDITSC_OPENAT2;
 	default:
 		return AUDITSC_COMPAT;
 	}
diff --git a/arch/powerpc/kernel/audit.c b/arch/powerpc/kernel/audit.c
index 6eb18ef77dff..1bcfca5fdf67 100644
--- a/arch/powerpc/kernel/audit.c
+++ b/arch/powerpc/kernel/audit.c
@@ -54,6 +54,8 @@ int audit_classify_syscall(int abi, unsigned syscall)
 		return AUDITSC_SOCKETCALL;
 	case __NR_execve:
 		return AUDITSC_EXECVE;
+	case __NR_openat2:
+		return AUDITSC_OPENAT2;
 	default:
 		return AUDITSC_NATIVE;
 	}
diff --git a/arch/powerpc/kernel/compat_audit.c b/arch/powerpc/kernel/compat_audit.c
index f250777f6365..1fa0c902be8a 100644
--- a/arch/powerpc/kernel/compat_audit.c
+++ b/arch/powerpc/kernel/compat_audit.c
@@ -39,6 +39,8 @@ int ppc32_classify_syscall(unsigned syscall)
 		return AUDITSC_SOCKETCALL;
 	case __NR_execve:
 		return AUDITSC_EXECVE;
+	case __NR_openat2:
+		return AUDITSC_OPENAT2;
 	default:
 		return AUDITSC_COMPAT;
 	}
diff --git a/arch/s390/kernel/audit.c b/arch/s390/kernel/audit.c
index 7e331e1831d4..02051a596b87 100644
--- a/arch/s390/kernel/audit.c
+++ b/arch/s390/kernel/audit.c
@@ -54,6 +54,8 @@ int audit_classify_syscall(int abi, unsigned syscall)
 		return AUDITSC_SOCKETCALL;
 	case __NR_execve:
 		return AUDITSC_EXECVE;
+	case __NR_openat2:
+		return AUDITSC_OPENAT2;
 	default:
 		return AUDITSC_NATIVE;
 	}
diff --git a/arch/s390/kernel/compat_audit.c b/arch/s390/kernel/compat_audit.c
index b2a2ed5d605a..320b5e7d96f0 100644
--- a/arch/s390/kernel/compat_audit.c
+++ b/arch/s390/kernel/compat_audit.c
@@ -40,6 +40,8 @@ int s390_classify_syscall(unsigned syscall)
 		return AUDITSC_SOCKETCALL;
 	case __NR_execve:
 		return AUDITSC_EXECVE;
+	case __NR_openat2:
+		return AUDITSC_OPENAT2;
 	default:
 		return AUDITSC_COMPAT;
 	}
diff --git a/arch/sparc/kernel/audit.c b/arch/sparc/kernel/audit.c
index 50fab35bdaba..b092274eca79 100644
--- a/arch/sparc/kernel/audit.c
+++ b/arch/sparc/kernel/audit.c
@@ -55,6 +55,8 @@ int audit_classify_syscall(int abi, unsigned int syscall)
 		return AUDITSC_SOCKETCALL;
 	case __NR_execve:
 		return AUDITSC_EXECVE;
+	case __NR_openat2:
+		return AUDITSC_OPENAT2;
 	default:
 		return AUDITSC_NATIVE;
 	}
diff --git a/arch/sparc/kernel/compat_audit.c b/arch/sparc/kernel/compat_audit.c
index fdf0d70b569b..b0a7d0112b96 100644
--- a/arch/sparc/kernel/compat_audit.c
+++ b/arch/sparc/kernel/compat_audit.c
@@ -40,6 +40,8 @@ int sparc32_classify_syscall(unsigned int syscall)
 		return AUDITSC_SOCKETCALL;
 	case __NR_execve:
 		return AUDITSC_EXECVE;
+	case __NR_openat2:
+		return AUDITSC_OPENAT2;
 	default:
 		return AUDITSC_COMPAT;
 	}
diff --git a/arch/x86/ia32/audit.c b/arch/x86/ia32/audit.c
index d3dc8b57df81..8f6bf3a46a3a 100644
--- a/arch/x86/ia32/audit.c
+++ b/arch/x86/ia32/audit.c
@@ -40,6 +40,8 @@ int ia32_classify_syscall(unsigned syscall)
 	case __NR_execve:
 	case __NR_execveat:
 		return AUDITSC_EXECVE;
+	case __NR_openat2:
+		return AUDITSC_OPENAT2;
 	default:
 		return AUDITSC_COMPAT;
 	}
diff --git a/arch/x86/kernel/audit_64.c b/arch/x86/kernel/audit_64.c
index 2a6cc9c9c881..44c3601cfdc4 100644
--- a/arch/x86/kernel/audit_64.c
+++ b/arch/x86/kernel/audit_64.c
@@ -53,6 +53,8 @@ int audit_classify_syscall(int abi, unsigned syscall)
 	case __NR_execve:
 	case __NR_execveat:
 		return AUDITSC_EXECVE;
+	case __NR_openat2:
+		return AUDITSC_OPENAT2;
 	default:
 		return AUDITSC_NATIVE;
 	}
diff --git a/include/linux/auditscm.h b/include/linux/auditscm.h
index 1c4f0ead5931..0893c373e12b 100644
--- a/include/linux/auditscm.h
+++ b/include/linux/auditscm.h
@@ -16,6 +16,7 @@ enum auditsc_class_t {
 	AUDITSC_OPENAT,
 	AUDITSC_SOCKETCALL,
 	AUDITSC_EXECVE,
+	AUDITSC_OPENAT2,
 
 	AUDITSC_NVALS /* count */
 };
diff --git a/kernel/auditsc.c b/kernel/auditsc.c
index 8807afa6e237..27c747e0d5ab 100644
--- a/kernel/auditsc.c
+++ b/kernel/auditsc.c
@@ -76,6 +76,7 @@
 #include <linux/fsnotify_backend.h>
 #include <uapi/linux/limits.h>
 #include <uapi/linux/netfilter/nf_tables.h>
+#include <uapi/linux/openat2.h>
 
 #include "audit.h"
 
@@ -195,6 +196,8 @@ static int audit_match_perm(struct audit_context *ctx, int mask)
 		return ((mask & AUDIT_PERM_WRITE) && ctx->argv[0] == SYS_BIND);
 	case AUDITSC_EXECVE:
 		return mask & AUDIT_PERM_EXEC;
+	case AUDITSC_OPENAT2:
+		return mask & ACC_MODE((u32)((struct open_how *)ctx->argv[2])->flags);
 	default:
 		return 0;
 	}
diff --git a/lib/audit.c b/lib/audit.c
index 3ec1a94d8d64..738bda22dd39 100644
--- a/lib/audit.c
+++ b/lib/audit.c
@@ -60,6 +60,10 @@ int audit_classify_syscall(int abi, unsigned syscall)
 #endif
 	case __NR_execve:
 		return AUDITSC_EXECVE;
+#ifdef __NR_openat2
+	case __NR_openat2:
+		return AUDITSC_OPENAT2;
+#endif
 	default:
 		return AUDITSC_NATIVE;
 	}
diff --git a/lib/compat_audit.c b/lib/compat_audit.c
index 63125ad2edc0..7ed9461b52b7 100644
--- a/lib/compat_audit.c
+++ b/lib/compat_audit.c
@@ -46,6 +46,10 @@ int audit_classify_compat_syscall(int abi, unsigned syscall)
 #endif
 	case __NR_execve:
 		return AUDITSC_EXECVE;
+#ifdef __NR_openat2
+	case __NR_openat2:
+		return AUDITSC_OPENAT2;
+#endif
 	default:
 		return AUDITSC_COMPAT;
 	}
-- 
2.27.0


  parent reply	other threads:[~2021-04-30 20:36 UTC|newest]

Thread overview: 8+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2021-04-30 20:35 [PATCH v3 0/3] audit: add support for openat2 Richard Guy Briggs
2021-04-30 20:35 ` [PATCH v3 1/3] audit: replace magic audit syscall class numbers with macros Richard Guy Briggs
2021-05-11  1:23   ` Paul Moore
2021-05-11 17:13     ` Richard Guy Briggs
2021-05-11 17:51       ` Paul Moore
2021-05-11 18:50     ` Richard Guy Briggs
2021-04-30 20:35 ` Richard Guy Briggs [this message]
2021-04-30 20:35 ` [PATCH v3 3/3] audit: add OPENAT2 record to list how Richard Guy Briggs

Reply instructions:

You may reply publicly to this message via plain-text email
using any one of the following methods:

* Save the following mbox file, import it into your mail client,
  and reply-to-all from there: mbox

  Avoid top-posting and favor interleaved quoting:
  https://en.wikipedia.org/wiki/Posting_style#Interleaved_style

* Reply using the --to, --cc, and --in-reply-to
  switches of git-send-email(1):

  git send-email \
    --in-reply-to=29e7068e8121aee22bdd9f4c9a6d08a1762b20e9.1619811762.git.rgb@redhat.com \
    --to=rgb@redhat.com \
    --cc=arnd@kernel.org \
    --cc=cyphar@cyphar.com \
    --cc=eparis@parisplace.org \
    --cc=eparis@redhat.com \
    --cc=linux-alpha@vger.kernel.org \
    --cc=linux-audit@redhat.com \
    --cc=linux-fsdevel@vger.kernel.org \
    --cc=linux-ia64@vger.kernel.org \
    --cc=linux-kernel@vger.kernel.org \
    --cc=linux-parisc@vger.kernel.org \
    --cc=linux-s390@vger.kernel.org \
    --cc=linuxppc-dev@lists.ozlabs.org \
    --cc=paul@paul-moore.com \
    --cc=sgrubb@redhat.com \
    --cc=sparclinux@vger.kernel.org \
    --cc=viro@zeniv.linux.org.uk \
    --cc=x86@kernel.org \
    /path/to/YOUR_REPLY

  https://kernel.org/pub/software/scm/git/docs/git-send-email.html

* If your mail client supports setting the In-Reply-To header
  via mailto: links, try the mailto: link
Be sure your reply has a Subject: header at the top and a blank line before the message body. 
This is a public inbox, see mirroring instructions
for how to clone and mirror all data and code used for this inbox;
as well as URLs for NNTP newsgroup(s).