[PATCH v10 14/16] tests: check path filter
Nikolay Marchuk
marchuk.nikolay.a at gmail.com
Mon Aug 28 08:54:51 UTC 2017
* tests/filtering_path.c: New file.
* tests/filtering_path.test: Likewise.
* tests/.gitignore: Add filtering_path.
* tests/Makefile.am (check_PROGRAMS): Add filtering_path.
(MISC_TESTS): Add filtering_path.test.
---
tests/.gitignore | 1 +
tests/Makefile.am | 2 +
tests/filtering_path.c | 285 ++++++++++++++++++++++++++++++++++++++++++++++
tests/filtering_path.test | 18 +++
4 files changed, 306 insertions(+)
create mode 100644 tests/filtering_path.c
create mode 100755 tests/filtering_path.test
diff --git a/tests/.gitignore b/tests/.gitignore
index c8930e20..6ddc6feb 100644
--- a/tests/.gitignore
+++ b/tests/.gitignore
@@ -71,6 +71,7 @@ file_handle
file_ioctl
filter-unavailable
filtering_fd
+filtering_path
finit_module
flock
fork-f
diff --git a/tests/Makefile.am b/tests/Makefile.am
index 831f500b..c768712d 100644
--- a/tests/Makefile.am
+++ b/tests/Makefile.am
@@ -94,6 +94,7 @@ check_PROGRAMS = $(PURE_EXECUTABLES) \
execveat-v \
filter-unavailable \
filtering_fd \
+ filtering_path \
fork-f \
getpid \
getppid \
@@ -264,6 +265,7 @@ MISC_TESTS = \
filtering_expression-syntax.test \
filtering_fd-syntax.test \
filtering_fd.test \
+ filtering_path.test \
filtering_syscall-syntax.test \
fflush.test \
get_regs.test \
diff --git a/tests/filtering_path.c b/tests/filtering_path.c
new file mode 100644
index 00000000..b5889478
--- /dev/null
+++ b/tests/filtering_path.c
@@ -0,0 +1,285 @@
+/*
+ * Check decoding of non-standard path filters
+ *
+ * Copyright (c) 2017 Nikolay Marchuk <marchuk.nikolay.a at gmail.com>
+ * All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the above copyright
+ * notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ * notice, this list of conditions and the following disclaimer in the
+ * documentation and/or other materials provided with the distribution.
+ * 3. The name of the author may not be used to endorse or promote products
+ * derived from this software without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
+ * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
+ * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
+ * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
+ * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
+ * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+ * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
+ * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+ * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
+ * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ */
+
+#include "tests.h"
+#include <asm/unistd.h>
+#include <assert.h>
+#include <fcntl.h>
+#include <stdio.h>
+#include <stdlib.h>
+#include <unistd.h>
+#include <sys/mman.h>
+
+#define FD_TRACED_DEFAULT 5
+
+#ifdef __NR_dup2
+void
+test_dup2(int fd_base)
+{
+ int rc = syscall(__NR_dup2, fd_base, -1);
+ printf("dup2(%d, -1) = %s\n", fd_base, sprintrc(rc));
+ syscall(__NR_dup2, fd_base + 1, -1);
+
+ rc = syscall(__NR_dup2, -1, fd_base);
+ printf("dup2(-1, %d) = %s\n", fd_base, sprintrc(rc));
+ syscall(__NR_dup2, -1, fd_base + 1);
+}
+#else
+void
+test_dup2(int fd_base)
+{
+}
+#endif
+
+#ifdef __NR_linkat
+void
+test_linkat(const char *path, int fd_base)
+{
+ int rc = syscall(__NR_linkat, fd_base, "old", -1, "new", 0);
+ printf("linkat(%d, \"old\", -1, \"new\", 0) = %s\n",
+ fd_base, sprintrc(rc));
+ rc = syscall(__NR_linkat, -1, "old", fd_base, "new", 0);
+ printf("linkat(-1, \"old\", %d, \"new\", 0) = %s\n",
+ fd_base, sprintrc(rc));
+ syscall(__NR_linkat, fd_base + 1, "old", fd_base + 1, "new", 0);
+
+ rc = syscall(__NR_linkat, -1, path, -1, "new", 0);
+ printf("linkat(-1, \"%s\", -1, \"new\", 0) = %s\n", path, sprintrc(rc));
+ rc = syscall(__NR_linkat, -1, "old", -1, path, 0);
+ printf("linkat(-1, \"old\", -1, \"%s\", 0) = %s\n", path, sprintrc(rc));
+
+ syscall(__NR_linkat, -1, "old", -1, "new", 0);
+}
+#else
+void
+test_linkat(const char *path, int fd_base)
+{
+}
+#endif
+
+#ifdef __NR_symlinkat
+void
+test_symlinkat(const char *path, int fd_base)
+{
+ int rc = syscall(__NR_symlinkat, "new", fd_base, "old");
+ printf("symlinkat(\"new\", %d, \"old\") = %s\n",
+ fd_base, sprintrc(rc));
+ syscall(__NR_symlinkat, "new", fd_base + 1, "old");
+
+ rc = syscall(__NR_symlinkat, "new", -1, path);
+ printf("symlinkat(\"new\", -1, \"%s\") = %s\n", path, sprintrc(rc));
+ syscall(__NR_symlinkat, "new", -1, "old");
+
+ syscall(__NR_symlinkat, path, -1, "old");
+}
+#else
+void
+test_symlinkat(const char *path, int fd_base)
+{
+}
+#endif
+
+#ifdef __NR_epoll_ctl
+# include <sys/epoll.h>
+void
+test_epoll(int fd_base)
+{
+ int rc = syscall(__NR_epoll_ctl, -1, EPOLL_CTL_ADD, fd_base, NULL);
+ printf("epoll_ctl(-1, EPOLL_CTL_ADD, %d, NULL) = %s\n",
+ fd_base, sprintrc(rc));
+ syscall(__NR_epoll_ctl, -1, EPOLL_CTL_ADD, fd_base + 1, NULL);
+}
+#else
+void
+test_epoll(int fd_base)
+{
+}
+#endif
+
+#if defined HAVE_SYS_FANOTIFY_H && defined HAVE_FANOTIFY_MARK && \
+ defined __NR_fanotify_mark
+# include <sys/fanotify.h>
+void
+test_fanotify_mark(const char *path, int fd_base)
+{
+ int rc = fanotify_mark(-1, 0, 0, fd_base, ".");
+ printf("fanotify_mark(-1, 0, 0, %d, \".\") = %s\n",
+ fd_base, sprintrc(rc));
+ fanotify_mark(-1, 0, 0, fd_base + 1, ".");
+
+ rc = fanotify_mark(-1, 0, 0, -1, path);
+ printf("fanotify_mark(-1, 0, 0, FAN_NOFD, \"%s\") = %s\n",
+ path, sprintrc(rc));
+ fanotify_mark(-1, 0, 0, -1, "not_file");
+}
+#else
+void
+test_fanotify_mark(const char *path, int fd_base)
+{
+}
+#endif
+
+#if defined __NR_select || defined __NR__newselect
+# include <sys/select.h>
+void
+test_select(int fd_base)
+{
+ fd_set positive_set, negative_set;
+
+ FD_ZERO(&positive_set);
+ FD_SET(fd_base, &positive_set);
+ FD_ZERO(&negative_set);
+ FD_SET(fd_base + 1, &negative_set);
+# ifndef __NR__newselect
+ syscall(__NR_select, fd_base + 1, &positive_set, NULL, NULL, NULL);
+ printf("select(%d, [%d], NULL, NULL, NULL) = 1 (in [%d])\n",
+ fd_base + 1, fd_base, fd_base);
+ syscall(__NR_select, fd_base + 2, &negative_set, NULL, NULL,NULL);
+# else
+ syscall(__NR__newselect, fd_base + 1, &positive_set, NULL, NULL,
+ NULL);
+ printf("_newselect(%d, [%d], NULL, NULL, NULL) = 1 (in [%d])\n",
+ fd_base + 1, fd_base, fd_base);
+ syscall(__NR__newselect, fd_base + 2, &negative_set, NULL, NULL, NULL);
+# endif
+}
+#else
+void
+test_select(int fd_base)
+{
+}
+#endif
+
+#ifdef __NR_poll
+# include <poll.h>
+void
+test_poll(int fd_base)
+{
+ struct pollfd positive_fds = {.fd = fd_base, .events = POLLIN};
+ struct pollfd negative_fds = {.fd = fd_base + 1, .events = POLLIN};
+
+ syscall(__NR_poll, &positive_fds, 1, 1);
+ printf("poll([{fd=%d, events=POLLIN}], 1, 1) = 1 "
+ "([{fd=%d, revents=POLLIN}])\n", fd_base, fd_base);
+ syscall(__NR_poll, &negative_fds, 1, 1);
+}
+#else
+void
+test_poll(int fd_base)
+{
+}
+#endif
+
+#ifdef __NR_faccessat
+void
+test_faccessat(const char *path, int fd_base)
+{
+ int rc = syscall(__NR_faccessat, -1, path, 0, 0);
+ printf("faccessat(-1, \"%s\", F_OK) = %s\n", path, sprintrc(rc));
+ syscall(__NR_faccessat, -1, "not_file", 0, 0);
+
+ rc = syscall(__NR_faccessat, fd_base, "not_file", 0, 0);
+ printf("faccessat(%d, \"not_file\", F_OK) = %s\n", fd_base, sprintrc(rc));
+ syscall(__NR_faccessat, fd_base + 1, "not_file", 0, 0);
+}
+#else
+void
+test_faccessat(const char *path, int fd_base)
+{
+}
+#endif
+
+#ifdef __NR_link
+void
+test_link(const char *path, int fd_base)
+{
+ int rc;
+
+ rc = syscall(__NR_link, path, NULL);
+ printf("link(\"%s\", NULL) = %s\n",
+ path, sprintrc(rc));
+
+ rc = syscall(__NR_link, NULL, path);
+ printf("link(NULL, \"%s\") = %s\n",
+ path, sprintrc(rc));
+
+ syscall(__NR_link, "old", "new");
+}
+#else
+void
+test_link(const char *path, int fd_base)
+{
+}
+#endif
+
+static const char *path = "path_trace test.sample";
+
+#ifdef __NR_open
+int
+main(int argc, char **argv)
+{
+ const char *const name = argc > 1 ? argv[1] : "mmap";
+ long tmp_fd_base = argc > 2 ? strtol(argv[2], NULL, 10) :
+ FD_TRACED_DEFAULT;
+ int fd_base = (tmp_fd_base > 0 && tmp_fd_base < 1023) ?
+ (int) tmp_fd_base : FD_TRACED_DEFAULT;
+ int tmp_fd;
+
+ assert((tmp_fd = syscall(__NR_open, path, O_RDONLY | O_CREAT, 0600)) >= 0);
+ printf("open(\"%s\", O_RDONLY|O_CREAT, 0600) = %d\n", path, tmp_fd);
+ assert(dup2(tmp_fd, fd_base) == fd_base);
+ printf("dup2(%d, %d) = %d\n", tmp_fd, fd_base, fd_base);
+ assert(close(tmp_fd) == 0);
+ printf("close(%d) = 0\n", tmp_fd);
+
+
+ test_dup2(fd_base);
+ test_linkat(path, fd_base);
+ test_symlinkat(path, fd_base);
+ test_epoll(fd_base);
+ test_fanotify_mark(path, fd_base);
+ test_select(fd_base);
+ test_poll(fd_base);
+ mmap(NULL, 0, PROT_NONE, MAP_FILE, fd_base, 0);
+ printf("%s(NULL, 0, PROT_NONE, MAP_FILE, %d, 0) = -1 "
+ "EINVAL (Invalid argument)\n", name, fd_base);
+
+ test_faccessat(path, fd_base);
+ test_link(path, fd_base);
+ test_linkat(path, fd_base);
+
+ puts("+++ exited with 0 +++");
+ return 0;
+}
+
+#else
+
+SKIP_MAIN_UNDEFINED("__NR_open")
+
+#endif
diff --git a/tests/filtering_path.test b/tests/filtering_path.test
new file mode 100755
index 00000000..ae071800
--- /dev/null
+++ b/tests/filtering_path.test
@@ -0,0 +1,18 @@
+#!/bin/sh
+
+# Check fd filtering
+
+. "${srcdir=.}/mmap_name.sh"
+
+fd_base=5
+path="path_trace\ test.sample"
+
+get_mmap_name "&& path $path"
+
+for arg in "trace(path $path)" \
+ "trace(syscall %file,%desc,%network and path $path)" \
+ ; do
+ run_prog "../$NAME" "$mmap" "$fd_base" > /dev/null
+ run_strace -a9 -e "$arg" $args > "$EXP"
+ match_diff "$LOG" "$EXP"
+done
--
2.11.0
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