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From: Kees Cook <keescook@chromium.org>
To: linux-kernel@vger.kernel.org
Cc: Kees Cook <keescook@chromium.org>,
	Sargun Dhillon <sargun@sargun.me>,
	Christian Brauner <christian@brauner.io>,
	"David S. Miller" <davem@davemloft.net>,
	Christoph Hellwig <hch@lst.de>, Tycho Andersen <tycho@tycho.ws>,
	Jakub Kicinski <kuba@kernel.org>,
	Alexander Viro <viro@zeniv.linux.org.uk>,
	Aleksa Sarai <cyphar@cyphar.com>,
	Matt Denton <mpdenton@google.com>, Jann Horn <jannh@google.com>,
	Chris Palmer <palmer@google.com>,
	Robert Sesek <rsesek@google.com>,
	Giuseppe Scrivano <gscrivan@redhat.com>,
	Greg Kroah-Hartman <gregkh@linuxfoundation.org>,
	Andy Lutomirski <luto@amacapital.net>,
	Will Drewry <wad@chromium.org>, Shuah Khan <shuah@kernel.org>,
	netdev@vger.kernel.org, containers@lists.linux-foundation.org,
	linux-api@vger.kernel.org, linux-fsdevel@vger.kernel.org,
	linux-kselftest@vger.kernel.org
Subject: [PATCH v4 09/11] selftests/seccomp: Rename user_trap_syscall() to user_notif_syscall()
Date: Mon, 15 Jun 2020 20:25:22 -0700	[thread overview]
Message-ID: <20200616032524.460144-10-keescook@chromium.org> (raw)
In-Reply-To: <20200616032524.460144-1-keescook@chromium.org>

The user_trap_syscall() helper creates a filter with
SECCOMP_RET_USER_NOTIF. To avoid confusion with SECCOMP_RET_TRAP, rename
the helper to user_notif_syscall().

Additionally fix a redundant "return" after XFAIL.

Signed-off-by: Kees Cook <keescook@chromium.org>
---
 tools/testing/selftests/seccomp/seccomp_bpf.c | 60 +++++++++----------
 1 file changed, 29 insertions(+), 31 deletions(-)

diff --git a/tools/testing/selftests/seccomp/seccomp_bpf.c b/tools/testing/selftests/seccomp/seccomp_bpf.c
index 40ed846744e4..95b134933831 100644
--- a/tools/testing/selftests/seccomp/seccomp_bpf.c
+++ b/tools/testing/selftests/seccomp/seccomp_bpf.c
@@ -3110,10 +3110,8 @@ TEST(get_metadata)
 	long ret;
 
 	/* Only real root can get metadata. */
-	if (geteuid()) {
-		XFAIL(return, "get_metadata requires real root");
-		return;
-	}
+	if (geteuid())
+		XFAIL(return, "get_metadata test requires real root");
 
 	ASSERT_EQ(0, pipe(pipefd));
 
@@ -3170,7 +3168,7 @@ TEST(get_metadata)
 	ASSERT_EQ(0, kill(pid, SIGKILL));
 }
 
-static int user_trap_syscall(int nr, unsigned int flags)
+static int user_notif_syscall(int nr, unsigned int flags)
 {
 	struct sock_filter filter[] = {
 		BPF_STMT(BPF_LD+BPF_W+BPF_ABS,
@@ -3216,7 +3214,7 @@ TEST(user_notification_basic)
 
 	/* Check that we get -ENOSYS with no listener attached */
 	if (pid == 0) {
-		if (user_trap_syscall(__NR_getppid, 0) < 0)
+		if (user_notif_syscall(__NR_getppid, 0) < 0)
 			exit(1);
 		ret = syscall(__NR_getppid);
 		exit(ret >= 0 || errno != ENOSYS);
@@ -3233,13 +3231,13 @@ TEST(user_notification_basic)
 	EXPECT_EQ(seccomp(SECCOMP_SET_MODE_FILTER, 0, &prog), 0);
 
 	/* Check that the basic notification machinery works */
-	listener = user_trap_syscall(__NR_getppid,
-				     SECCOMP_FILTER_FLAG_NEW_LISTENER);
+	listener = user_notif_syscall(__NR_getppid,
+				      SECCOMP_FILTER_FLAG_NEW_LISTENER);
 	ASSERT_GE(listener, 0);
 
 	/* Installing a second listener in the chain should EBUSY */
-	EXPECT_EQ(user_trap_syscall(__NR_getppid,
-				    SECCOMP_FILTER_FLAG_NEW_LISTENER),
+	EXPECT_EQ(user_notif_syscall(__NR_getppid,
+				     SECCOMP_FILTER_FLAG_NEW_LISTENER),
 		  -1);
 	EXPECT_EQ(errno, EBUSY);
 
@@ -3303,12 +3301,12 @@ TEST(user_notification_with_tsync)
 	/* these were exclusive */
 	flags = SECCOMP_FILTER_FLAG_NEW_LISTENER |
 		SECCOMP_FILTER_FLAG_TSYNC;
-	ASSERT_EQ(-1, user_trap_syscall(__NR_getppid, flags));
+	ASSERT_EQ(-1, user_notif_syscall(__NR_getppid, flags));
 	ASSERT_EQ(EINVAL, errno);
 
 	/* but now they're not */
 	flags |= SECCOMP_FILTER_FLAG_TSYNC_ESRCH;
-	ret = user_trap_syscall(__NR_getppid, flags);
+	ret = user_notif_syscall(__NR_getppid, flags);
 	close(ret);
 	ASSERT_LE(0, ret);
 }
@@ -3326,8 +3324,8 @@ TEST(user_notification_kill_in_middle)
 		TH_LOG("Kernel does not support PR_SET_NO_NEW_PRIVS!");
 	}
 
-	listener = user_trap_syscall(__NR_getppid,
-				     SECCOMP_FILTER_FLAG_NEW_LISTENER);
+	listener = user_notif_syscall(__NR_getppid,
+				      SECCOMP_FILTER_FLAG_NEW_LISTENER);
 	ASSERT_GE(listener, 0);
 
 	/*
@@ -3380,8 +3378,8 @@ TEST(user_notification_signal)
 
 	ASSERT_EQ(socketpair(PF_LOCAL, SOCK_SEQPACKET, 0, sk_pair), 0);
 
-	listener = user_trap_syscall(__NR_gettid,
-				     SECCOMP_FILTER_FLAG_NEW_LISTENER);
+	listener = user_notif_syscall(__NR_gettid,
+				      SECCOMP_FILTER_FLAG_NEW_LISTENER);
 	ASSERT_GE(listener, 0);
 
 	pid = fork();
@@ -3450,8 +3448,8 @@ TEST(user_notification_closed_listener)
 		TH_LOG("Kernel does not support PR_SET_NO_NEW_PRIVS!");
 	}
 
-	listener = user_trap_syscall(__NR_getppid,
-				     SECCOMP_FILTER_FLAG_NEW_LISTENER);
+	listener = user_notif_syscall(__NR_getppid,
+				      SECCOMP_FILTER_FLAG_NEW_LISTENER);
 	ASSERT_GE(listener, 0);
 
 	/*
@@ -3484,8 +3482,8 @@ TEST(user_notification_child_pid_ns)
 
 	ASSERT_EQ(unshare(CLONE_NEWUSER | CLONE_NEWPID), 0);
 
-	listener = user_trap_syscall(__NR_getppid,
-				     SECCOMP_FILTER_FLAG_NEW_LISTENER);
+	listener = user_notif_syscall(__NR_getppid,
+				      SECCOMP_FILTER_FLAG_NEW_LISTENER);
 	ASSERT_GE(listener, 0);
 
 	pid = fork();
@@ -3524,8 +3522,8 @@ TEST(user_notification_sibling_pid_ns)
 		TH_LOG("Kernel does not support PR_SET_NO_NEW_PRIVS!");
 	}
 
-	listener = user_trap_syscall(__NR_getppid,
-				     SECCOMP_FILTER_FLAG_NEW_LISTENER);
+	listener = user_notif_syscall(__NR_getppid,
+				      SECCOMP_FILTER_FLAG_NEW_LISTENER);
 	ASSERT_GE(listener, 0);
 
 	pid = fork();
@@ -3589,8 +3587,8 @@ TEST(user_notification_fault_recv)
 
 	ASSERT_EQ(unshare(CLONE_NEWUSER), 0);
 
-	listener = user_trap_syscall(__NR_getppid,
-				     SECCOMP_FILTER_FLAG_NEW_LISTENER);
+	listener = user_notif_syscall(__NR_getppid,
+				      SECCOMP_FILTER_FLAG_NEW_LISTENER);
 	ASSERT_GE(listener, 0);
 
 	pid = fork();
@@ -3641,7 +3639,7 @@ TEST(user_notification_continue)
 		TH_LOG("Kernel does not support PR_SET_NO_NEW_PRIVS!");
 	}
 
-	listener = user_trap_syscall(__NR_dup, SECCOMP_FILTER_FLAG_NEW_LISTENER);
+	listener = user_notif_syscall(__NR_dup, SECCOMP_FILTER_FLAG_NEW_LISTENER);
 	ASSERT_GE(listener, 0);
 
 	pid = fork();
@@ -3736,7 +3734,7 @@ TEST(user_notification_filter_empty)
 	if (pid == 0) {
 		int listener;
 
-		listener = user_trap_syscall(__NR_mknod, SECCOMP_FILTER_FLAG_NEW_LISTENER);
+		listener = user_notif_syscall(__NR_mknod, SECCOMP_FILTER_FLAG_NEW_LISTENER);
 		if (listener < 0)
 			_exit(EXIT_FAILURE);
 
@@ -3792,7 +3790,7 @@ TEST(user_notification_filter_empty_threaded)
 		int listener, status;
 		pthread_t thread;
 
-		listener = user_trap_syscall(__NR_dup, SECCOMP_FILTER_FLAG_NEW_LISTENER);
+		listener = user_notif_syscall(__NR_dup, SECCOMP_FILTER_FLAG_NEW_LISTENER);
 		if (listener < 0)
 			_exit(EXIT_FAILURE);
 
@@ -3869,8 +3867,8 @@ TEST(user_notification_sendfd)
 	}
 
 	/* Check that the basic notification machinery works */
-	listener = user_trap_syscall(__NR_getppid,
-				     SECCOMP_FILTER_FLAG_NEW_LISTENER);
+	listener = user_notif_syscall(__NR_getppid,
+				      SECCOMP_FILTER_FLAG_NEW_LISTENER);
 	ASSERT_GE(listener, 0);
 
 	pid = fork();
@@ -3993,8 +3991,8 @@ TEST(user_notification_sendfd_rlimit)
 	}
 
 	/* Check that the basic notification machinery works */
-	listener = user_trap_syscall(__NR_getppid,
-				     SECCOMP_FILTER_FLAG_NEW_LISTENER);
+	listener = user_notif_syscall(__NR_getppid,
+				      SECCOMP_FILTER_FLAG_NEW_LISTENER);
 	ASSERT_GE(listener, 0);
 
 	pid = fork();
-- 
2.25.1


  parent reply	other threads:[~2020-06-16  3:26 UTC|newest]

Thread overview: 28+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2020-06-16  3:25 [PATCH v4 00/11] Add seccomp notifier ioctl that enables adding fds Kees Cook
2020-06-16  3:25 ` [PATCH v4 01/11] net/scm: Regularize compat handling of scm_detach_fds() Kees Cook
2020-06-16  3:25 ` [PATCH v4 02/11] fs: Move __scm_install_fd() to __fd_install_received() Kees Cook
2020-06-16  5:29   ` Sargun Dhillon
2020-06-16  5:48     ` Kees Cook
2020-06-17 15:25   ` David Laight
2020-06-17 18:40     ` Kees Cook
2020-06-18  8:56   ` Christian Brauner
2020-06-18 20:05     ` Kees Cook
2020-06-16  3:25 ` [PATCH v4 03/11] fs: Add fd_install_received() wrapper for __fd_install_received() Kees Cook
2020-06-17 15:35   ` David Laight
2020-06-17 19:58     ` Kees Cook
2020-06-18  8:19       ` David Laight
2020-06-16  3:25 ` [PATCH v4 04/11] pidfd: Replace open-coded partial fd_install_received() Kees Cook
2020-06-16  3:25 ` [PATCH v4 05/11] fs: Expand __fd_install_received() to accept fd Kees Cook
2020-06-16  3:25 ` [PATCH v4 06/11] seccomp: Introduce addfd ioctl to seccomp user notifier Kees Cook
2020-06-16  3:25 ` [PATCH v4 07/11] selftests/seccomp: Test SECCOMP_IOCTL_NOTIF_ADDFD Kees Cook
2020-06-16  3:25 ` [PATCH v4 08/11] selftests/seccomp: Make kcmp() less required Kees Cook
2020-06-16 14:57   ` Tycho Andersen
2020-06-16 16:03     ` Kees Cook
2020-06-16  3:25 ` Kees Cook [this message]
2020-06-16 14:56   ` [PATCH v4 09/11] selftests/seccomp: Rename user_trap_syscall() to user_notif_syscall() Tycho Andersen
2020-06-16  3:25 ` [PATCH v4 10/11] seccomp: Switch addfd to Extensible Argument ioctl Kees Cook
2020-06-16 14:55   ` Tycho Andersen
2020-06-16 16:05     ` Kees Cook
2020-06-16 16:18       ` Tycho Andersen
2020-06-16  3:25 ` [PATCH v4 11/11] seccomp: Fix ioctl number for SECCOMP_IOCTL_NOTIF_ID_VALID Kees Cook
2020-06-18 22:16 ` [PATCH v4 00/11] Add seccomp notifier ioctl that enables adding fds Sargun Dhillon

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