[LTP] [PATCH] syscalls/fanotify: test fanotify_init new flags FAN_EVENT_INFO_TID
nixiaoming
nixiaoming@huawei.com
Tue Sep 25 10:43:44 CEST 2018
fanotify_info_tid:
test fanotify_init with FAN_EVENT_INFO_TID
data->pid is ID(pid) of the thread that caused the event
fanotify_info_tgid:
test fanotify_init without FAN_EVENT_INFO_TID
data->pid is ID(tgid) of the process that caused the event
Signed-off-by: nixiaoming <nixiaoming@huawei.com>
---
testcases/kernel/syscalls/fanotify/Makefile | 3 +-
.../kernel/syscalls/fanotify/fanotify_info_tgid.c | 200 ++++++++++++++++++++
.../kernel/syscalls/fanotify/fanotify_info_tid.c | 204 +++++++++++++++++++++
3 files changed, 406 insertions(+), 1 deletion(-)
create mode 100644 testcases/kernel/syscalls/fanotify/fanotify_info_tgid.c
create mode 100644 testcases/kernel/syscalls/fanotify/fanotify_info_tid.c
diff --git a/testcases/kernel/syscalls/fanotify/Makefile b/testcases/kernel/syscalls/fanotify/Makefile
index bb58878..d85c755 100644
--- a/testcases/kernel/syscalls/fanotify/Makefile
+++ b/testcases/kernel/syscalls/fanotify/Makefile
@@ -17,7 +17,8 @@
#
top_srcdir ?= ../../../..
-
+fanotify_info_tid: CFLAGS+=-pthread
+fanotify_info_tgid: CFLAGS+=-pthread
include $(top_srcdir)/include/mk/testcases.mk
include $(top_srcdir)/include/mk/generic_leaf_target.mk
diff --git a/testcases/kernel/syscalls/fanotify/fanotify_info_tgid.c b/testcases/kernel/syscalls/fanotify/fanotify_info_tgid.c
new file mode 100644
index 0000000..3b10d79
--- /dev/null
+++ b/testcases/kernel/syscalls/fanotify/fanotify_info_tgid.c
@@ -0,0 +1,200 @@
+/*
+ * Copyright (c) 2013 SUSE. All Rights Reserved.
+ *
+ * This program is free software; you can redistribute it and/or modify it
+ * under the terms of version 2 of the GNU General Public License as
+ * published by the Free Software Foundation.
+ *
+ * This program is distributed in the hope that it would be useful, but
+ * WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
+ *
+ * Further, this software is distributed without any warranty that it is
+ * free of the rightful claim of any third person regarding infringement
+ * or the like. Any license provided herein, whether implied or
+ * otherwise, applies only to this software file. Patent licenses, if
+ * any, provided herein do not apply to combinations of this program with
+ * other software, or any other product whatsoever.
+ *
+ * You should have received a copy of the GNU General Public License along
+ * with this program; if not, write the Free Software Foundation, Inc.,
+ * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
+ *
+ * Started by nixiaoming <nixiaoming@huawei.com>
+ *
+ * DESCRIPTION
+ * After fanotify_init without FAN_EVENT_INFO_TID,
+ * check whether the program can only show tgid
+ * in the multithreaded program triggered the event..
+ *
+ * This is a regression test for commit 55c5b2ed10331c3b22:
+ *
+ * fanotify: support reporting thread id instead of process id
+ */
+#define _GNU_SOURCE
+#include "config.h"
+
+#include <stdio.h>
+#include <stdlib.h>
+
+#include <sys/stat.h>
+#include <sys/types.h>
+#include <fcntl.h>
+#include <errno.h>
+#include <string.h>
+#include <unistd.h>
+#include <sys/syscall.h>
+#include <pthread.h>
+#include <sys/stat.h>
+#include <fcntl.h>
+#include <linux/limits.h>
+#include "tst_test.h"
+#include "fanotify.h"
+
+#if defined(HAVE_SYS_FANOTIFY_H)
+#include <sys/fanotify.h>
+
+
+#define BUF_SIZE 256
+#define gettid() syscall(SYS_gettid)
+
+static char fname[BUF_SIZE];
+int fd_notify;
+
+static int tid;
+static int tgid;
+static char tid_file[BUF_SIZE];
+
+void *thread_create_file(void *arg LTP_ATTRIBUTE_UNUSED)
+{
+ int fd;
+
+ tid = gettid();
+ snprintf(tid_file, sizeof(tid_file), "%s/test_tid_%d", fname, tid);
+ sleep(1);
+ fd = SAFE_OPEN(tid_file, O_WRONLY|O_CREAT, 0600);
+ tst_res(TINFO, "open file=%s. fd=%d, tid=%i\n", tid_file, fd, tid);
+ SAFE_WRITE(1, fd, tid_file, sizeof(tid_file));
+ tst_res(TINFO, "write file=%s. fd=%d, tid=%i\n", tid_file, fd, tid);
+ SAFE_CLOSE(fd);
+ tst_res(TINFO, "close file=%s. fd=%d, tid=%i\n", tid_file, fd, tid);
+ SAFE_UNLINK(tid_file);
+ tst_res(TINFO, "unlink file=%s. fd=%d, tid=%i\n", tid_file, fd, tid);
+ sleep(1);
+ pthread_exit(0);
+}
+
+static const char* mask2str(uint64_t mask)
+{
+ static char buffer[10];
+ int offset = 0;
+
+ if (mask & FAN_ACCESS)
+ buffer[offset++] = 'R';
+ if (mask & FAN_ONDIR)
+ buffer[offset++] = 'D';
+ if (mask & FAN_OPEN)
+ buffer[offset++] = 'O';
+ if (mask & FAN_CLOSE_WRITE || mask & FAN_CLOSE_NOWRITE)
+ buffer[offset++] = 'C';
+ if (mask & FAN_MODIFY || mask & FAN_CLOSE_WRITE)
+ buffer[offset++] = 'W';
+ buffer[offset] = '\0';
+
+ return buffer;
+}
+
+
+static void show_data(const struct fanotify_event_metadata *data)
+{
+ static char printbuf[100];
+ static char pathname[PATH_MAX];
+ struct stat st;
+ int len;
+
+ snprintf(printbuf, sizeof(printbuf), "/proc/self/fd/%i", data->fd);
+ len = readlink(printbuf, pathname, sizeof(pathname));
+ if (len < 0) {
+ /* fall back to the device/inode */
+ if (fstat(data->fd, &st) < 0) {
+ perror("stat");
+ exit(1);
+ }
+ snprintf(pathname, sizeof(pathname), "device %i:%i inode %ld\n",
+ major(st.st_dev), minor(st.st_dev), st.st_ino);
+ } else {
+ pathname[len] = '\0';
+ }
+ tst_res(TINFO, "envnt: %i %s %s\n", data->pid, mask2str(data->mask),
+ pathname);
+}
+
+void test01(void)
+{
+ int res;
+ int ret;
+ char buffer[4096] = {0};
+ struct fanotify_event_metadata *data;
+
+ ret = fanotify_mark(fd_notify, FAN_MARK_ADD, FAN_CLOSE | FAN_OPEN | FAN_EVENT_ON_CHILD, AT_FDCWD, fname);
+ if (ret != 0) {
+ tst_brk(TBROK, "fanotify_mark (%d, FAN_MARK_ADD, FAN_CLOSE | FAN_OPEN |FAN_EVENT_ON_CHILD, AT_FDCWD, %s) "
+ "failed, ret=%d\n", fd_notify, fname, ret);
+ }
+ tst_res(TINFO, "add notify mark\n");
+ res = SAFE_READ(0, fd_notify, buffer, 4096);
+ data = (struct fanotify_event_metadata *) buffer;
+ while (FAN_EVENT_OK(data, res)) {
+ show_data(data);
+ if (data->pid == tid)
+ tst_res(TFAIL, "data->pid == envent task thread id %u\n", tid);
+ else if (data->pid == tgid)
+ tst_res(TPASS, "data->pid %u != envent task thread id %u\n", data->pid, tid);
+ else
+ tst_res(TINFO, "Environmental interference....\n");
+ close(data->fd);
+ data = FAN_EVENT_NEXT(data, res);
+ }
+ fflush(stdout);
+
+ /* Remove mark to clear FAN_MARK_IGNORED_SURV_MODIFY */
+ ret = fanotify_mark(fd_notify, FAN_MARK_REMOVE, FAN_CLOSE | FAN_OPEN | FAN_EVENT_ON_CHILD, AT_FDCWD, fname);
+ if (ret != 0) {
+ tst_brk(TBROK, "fanotify_mark (%d, FAN_MARK_REMOVE, FAN_CLOSE | FAN_OPEN | FAN_EVENT_ON_CHILD, AT_FDCWD, %s) "
+ "failed, ret=%d\n", fd_notify, fname, ret);
+ }
+ tst_res(TINFO, "remove notify mark\n");
+}
+
+static void setup(void)
+{
+ pthread_t p_id;
+
+ tgid = getpid();
+ sprintf(fname, "tfile_%d", tgid);
+ mkdir(fname, 0755);
+
+ fd_notify = SAFE_FANOTIFY_INIT(0, 0);
+ if (fd_notify < 0)
+ tst_brk(TCONF, "no support\n");
+ pthread_create(&p_id, NULL, thread_create_file, NULL);
+}
+
+static void cleanup(void)
+{
+ if (fd_notify > 0)
+ SAFE_CLOSE(fd_notify);
+ rmdir(fname);
+}
+
+static struct tst_test test = {
+ .test_all = test01,
+ .setup = setup,
+ .cleanup = cleanup,
+ .needs_tmpdir = 1,
+ .needs_root = 1
+};
+
+#else
+TST_TEST_TCONF("system doesn't have required fanotify support");
+#endif
diff --git a/testcases/kernel/syscalls/fanotify/fanotify_info_tid.c b/testcases/kernel/syscalls/fanotify/fanotify_info_tid.c
new file mode 100644
index 0000000..4baf714
--- /dev/null
+++ b/testcases/kernel/syscalls/fanotify/fanotify_info_tid.c
@@ -0,0 +1,204 @@
+/*
+ * Copyright (c) 2013 SUSE. All Rights Reserved.
+ *
+ * This program is free software; you can redistribute it and/or modify it
+ * under the terms of version 2 of the GNU General Public License as
+ * published by the Free Software Foundation.
+ *
+ * This program is distributed in the hope that it would be useful, but
+ * WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
+ *
+ * Further, this software is distributed without any warranty that it is
+ * free of the rightful claim of any third person regarding infringement
+ * or the like. Any license provided herein, whether implied or
+ * otherwise, applies only to this software file. Patent licenses, if
+ * any, provided herein do not apply to combinations of this program with
+ * other software, or any other product whatsoever.
+ *
+ * You should have received a copy of the GNU General Public License along
+ * with this program; if not, write the Free Software Foundation, Inc.,
+ * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
+ *
+ * Started by nixiaoming <nixiaoming@huawei.com>
+ *
+ * DESCRIPTION
+ * After fanotify_init adds flags FAN_EVENT_INFO_TID,
+ * check whether the program can accurately identify which thread id
+ * in the multithreaded program triggered the event..
+ *
+ * This is a regression test for commit 55c5b2ed10331c3b22:
+ *
+ * fanotify: support reporting thread id instead of process id
+ */
+#define _GNU_SOURCE
+#include "config.h"
+
+#include <stdio.h>
+#include <stdlib.h>
+
+#include <sys/stat.h>
+#include <sys/types.h>
+#include <fcntl.h>
+#include <errno.h>
+#include <string.h>
+#include <unistd.h>
+#include <sys/syscall.h>
+#include <pthread.h>
+#include <sys/stat.h>
+#include <fcntl.h>
+#include <linux/limits.h>
+#include "tst_test.h"
+#include "fanotify.h"
+
+#if defined(HAVE_SYS_FANOTIFY_H)
+#include <sys/fanotify.h>
+#ifdef FAN_EVENT_INFO_TID
+
+#define BUF_SIZE 256
+#define gettid() syscall(SYS_gettid)
+
+static char fname[BUF_SIZE];
+int fd_notify;
+
+static int tid;
+static int tgid;
+static char tid_file[BUF_SIZE];
+
+void *thread_create_file(void *arg LTP_ATTRIBUTE_UNUSED)
+{
+ int fd;
+
+ tid = gettid();
+ snprintf(tid_file, sizeof(tid_file), "%s/test_tid_%d", fname, tid);
+ sleep(1);
+ fd = SAFE_OPEN(tid_file, O_WRONLY|O_CREAT, 0600);
+ tst_res(TINFO, "open file=%s. fd=%d, tid=%i\n", tid_file, fd, tid);
+ SAFE_WRITE(1, fd, tid_file, sizeof(tid_file));
+ tst_res(TINFO, "write file=%s. fd=%d, tid=%i\n", tid_file, fd, tid);
+ SAFE_CLOSE(fd);
+ tst_res(TINFO, "close file=%s. fd=%d, tid=%i\n", tid_file, fd, tid);
+ SAFE_UNLINK(tid_file);
+ tst_res(TINFO, "unlink file=%s. fd=%d, tid=%i\n", tid_file, fd, tid);
+ sleep(1);
+ pthread_exit(0);
+}
+
+static const char* mask2str(uint64_t mask)
+{
+ static char buffer[10];
+ int offset = 0;
+
+ if (mask & FAN_ACCESS)
+ buffer[offset++] = 'R';
+ if (mask & FAN_ONDIR)
+ buffer[offset++] = 'D';
+ if (mask & FAN_OPEN)
+ buffer[offset++] = 'O';
+ if (mask & FAN_CLOSE_WRITE || mask & FAN_CLOSE_NOWRITE)
+ buffer[offset++] = 'C';
+ if (mask & FAN_MODIFY || mask & FAN_CLOSE_WRITE)
+ buffer[offset++] = 'W';
+ buffer[offset] = '\0';
+
+ return buffer;
+}
+
+
+static void show_data(const struct fanotify_event_metadata *data)
+{
+ static char printbuf[100];
+ static char pathname[PATH_MAX];
+ struct stat st;
+ int len;
+
+ snprintf(printbuf, sizeof(printbuf), "/proc/self/fd/%i", data->fd);
+ len = readlink(printbuf, pathname, sizeof(pathname));
+ if (len < 0) {
+ /* fall back to the device/inode */
+ if (fstat(data->fd, &st) < 0) {
+ perror("stat");
+ exit(1);
+ }
+ snprintf(pathname, sizeof(pathname), "device %i:%i inode %ld\n",
+ major(st.st_dev), minor(st.st_dev), st.st_ino);
+ } else {
+ pathname[len] = '\0';
+ }
+ tst_res(TINFO, "envnt: %i %s %s\n", data->pid, mask2str(data->mask),
+ pathname);
+}
+
+void test01(void)
+{
+ int res;
+ int ret;
+ char buffer[4096] = {0};
+ struct fanotify_event_metadata *data;
+
+ ret = fanotify_mark(fd_notify, FAN_MARK_ADD, FAN_CLOSE | FAN_OPEN | FAN_EVENT_ON_CHILD, AT_FDCWD, fname);
+ if (ret != 0) {
+ tst_brk(TBROK, "fanotify_mark (%d, FAN_MARK_ADD, FAN_CLOSE | FAN_OPEN |FAN_EVENT_ON_CHILD, AT_FDCWD, %s) "
+ "failed, ret=%d\n", fd_notify, fname, ret);
+ }
+ tst_res(TINFO, "add notify mark\n");
+ res = SAFE_READ(0, fd_notify, buffer, 4096);
+ data = (struct fanotify_event_metadata *) buffer;
+ while (FAN_EVENT_OK(data, res)) {
+ show_data(data);
+ if (data->pid == tid)
+ tst_res(TPASS, "data->pid == envent task thread id %u\n", tid);
+ else if (data->pid == tgid)
+ tst_res(TFAIL, "data->pid %u != envent task thread id %u\n", data->pid, tid);
+ else
+ tst_res(TINFO, "Environmental interference....\n");
+ close(data->fd);
+ data = FAN_EVENT_NEXT(data, res);
+ }
+ fflush(stdout);
+
+ /* Remove mark to clear FAN_MARK_IGNORED_SURV_MODIFY */
+ ret = fanotify_mark(fd_notify, FAN_MARK_REMOVE, FAN_CLOSE | FAN_OPEN | FAN_EVENT_ON_CHILD, AT_FDCWD, fname);
+ if (ret != 0) {
+ tst_brk(TBROK, "fanotify_mark (%d, FAN_MARK_REMOVE, FAN_CLOSE | FAN_OPEN | FAN_EVENT_ON_CHILD, AT_FDCWD, %s) "
+ "failed, ret=%d\n", fd_notify, fname, ret);
+ }
+ tst_res(TINFO, "remove notify mark\n");
+}
+
+static void setup(void)
+{
+ pthread_t p_id;
+
+ tgid = getpid();
+ sprintf(fname, "tfile_%d", tgid);
+ mkdir(fname, 0755);
+
+ fd_notify = SAFE_FANOTIFY_INIT(FAN_EVENT_INFO_TID, 0);
+ if (fd_notify < 0)
+ tst_brk(TCONF, "no support FAN_EVENT_INFO_TID\n");
+ pthread_create(&p_id, NULL, thread_create_file, NULL);
+}
+
+static void cleanup(void)
+{
+ if (fd_notify > 0)
+ SAFE_CLOSE(fd_notify);
+ rmdir(fname);
+}
+
+static struct tst_test test = {
+ .test_all = test01,
+ .setup = setup,
+ .cleanup = cleanup,
+ .needs_tmpdir = 1,
+ .needs_root = 1
+};
+
+#else
+TST_TEST_TCONF("system doesn't support fanotify_init flags: FAN_EVENT_INFO_TID");
+#endif /* ifdef FAN_EVENT_INFO_TID */
+
+#else
+TST_TEST_TCONF("system doesn't have required fanotify support");
+#endif
--
2.10.1
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