[LTP] [PATCH v2] syscalls/fanotify11: new test for report thread id
nixiaoming
nixiaoming@huawei.com
Thu Sep 27 12:10:28 CEST 2018
syscalls/fanotify11
test fanotify_init with FAN_EVENT_INFO_TID
data->pid is ID(pid) of the thread that caused the event
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>
---
runtest/syscalls | 1 +
testcases/kernel/syscalls/fanotify/.gitignore | 1 +
testcases/kernel/syscalls/fanotify/Makefile | 2 +-
testcases/kernel/syscalls/fanotify/fanotify11.c | 221 ++++++++++++++++++++++++
4 files changed, 224 insertions(+), 1 deletion(-)
create mode 100644 testcases/kernel/syscalls/fanotify/fanotify11.c
diff --git a/runtest/syscalls b/runtest/syscalls
index 0d0be77..84b0d6e 100644
--- a/runtest/syscalls
+++ b/runtest/syscalls
@@ -497,6 +497,7 @@ fanotify06 fanotify06
fanotify07 fanotify07
fanotify08 fanotify08
fanotify09 fanotify09
+fanotify11 fanotify11
ioperm01 ioperm01
ioperm02 ioperm02
diff --git a/testcases/kernel/syscalls/fanotify/.gitignore b/testcases/kernel/syscalls/fanotify/.gitignore
index ec75539..62180ab 100644
--- a/testcases/kernel/syscalls/fanotify/.gitignore
+++ b/testcases/kernel/syscalls/fanotify/.gitignore
@@ -7,3 +7,4 @@
/fanotify07
/fanotify08
/fanotify09
+/fanotify11
diff --git a/testcases/kernel/syscalls/fanotify/Makefile b/testcases/kernel/syscalls/fanotify/Makefile
index bb58878..5d01b48 100644
--- a/testcases/kernel/syscalls/fanotify/Makefile
+++ b/testcases/kernel/syscalls/fanotify/Makefile
@@ -17,7 +17,7 @@
#
top_srcdir ?= ../../../..
-
+fanotify11: 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/fanotify11.c b/testcases/kernel/syscalls/fanotify/fanotify11.c
new file mode 100644
index 0000000..6218b22
--- /dev/null
+++ b/testcases/kernel/syscalls/fanotify/fanotify11.c
@@ -0,0 +1,221 @@
+/*
+ * 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..
+ *
+ */
+#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 FAN_EVENT_INFO_TID 0x02000000
+#ifdef FAN_EVENT_INFO_TID
+
+#define BUF_SIZE 256
+#define gettid() syscall(SYS_gettid)
+
+static char fname[BUF_SIZE];
+
+static int tid;
+static int tgid;
+
+void *thread_create_file(void *arg LTP_ATTRIBUTE_UNUSED)
+{
+ int fd;
+ char tid_file[64] = {0};
+ char buf[64];
+
+ tid = gettid();
+ snprintf(tid_file, sizeof(tid_file), "%s/test_tid_%d", fname, tid);
+ fd = SAFE_OPEN(tid_file, O_RDWR|O_CREAT, 0600);
+ tst_res(TINFO, "file=%s. fd=%d, tid=%i\n", tid_file, fd, tid);
+ SAFE_WRITE(1, fd, tid_file, sizeof(tid_file));
+ lseek(fd, 0, SEEK_SET);
+ SAFE_READ(0, fd, buf, sizeof(buf));
+ SAFE_CLOSE(fd);
+ SAFE_UNLINK(tid_file);
+ 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 test_init_bit(unsigned int flags, unsigned long long mask)
+{
+ int ret;
+ pthread_t p_id;
+ struct fanotify_event_metadata data;
+ int fd_notify;
+
+ fd_notify = fanotify_init(flags, 0);
+ if (fd_notify == -EINVAL)
+ tst_brk(TCONF, "no support FAN_EVENT_INFO_TID\n");
+
+ ret = fanotify_mark(fd_notify, FAN_MARK_ADD, mask | FAN_EVENT_ON_CHILD, AT_FDCWD, fname);
+ if (ret != 0) {
+ tst_brk(TBROK, "fanotify_mark (%d, FAN_MARK_ADD, %x, AT_FDCWD, %s) failed, ret=%d\n", mask | FAN_EVENT_ON_CHILD, fd_notify, fname, ret);
+ }
+ pthread_create(&p_id, NULL, thread_create_file, NULL);
+ res = SAFE_READ(0, fd_notify, &data, sizeof(struct fanotify_event_metadata));
+ show_data(&data);
+ if (((flags & FAN_EVENT_INFO_TID) && (data.pid == tid)) ||
+ ((!(flags & FAN_EVENT_INFO_TID)) && (data.pid == tgid)))
+ tst_res(TPASS, "%s FAN_EVENT_INFO_TID: tgid=%d, tid=%d, data->pid=%d\n", (flags & FAN_EVENT_INFO_TID) ? "with" : "without", tgid, tid, data.pid);
+ else
+ tst_res(TFAIL, "%s FAN_EVENT_INFO_TID: tgid=%d, tid=%d, data->pid=%d\n", (flags & FAN_EVENT_INFO_TID) ? "with" : "without", tgid, tid, data.pid);
+ if (data.fd != FAN_NOFD)
+ SAFE_CLOSE(data.fd);
+
+ /* Remove mark to clear FAN_MARK_IGNORED_SURV_MODIFY */
+ ret = fanotify_mark(fd_notify, FAN_MARK_REMOVE, mask | FAN_EVENT_ON_CHILD, AT_FDCWD, fname);
+ if (ret != 0) {
+ tst_brk(TBROK, "fanotify_mark (%d, FAN_MARK_REMOVE, %x, AT_FDCWD, %s) failed, ret=%d\n", mask | FAN_EVENT_ON_CHILD, fd_notify, fname, ret);
+ }
+
+ SAFE_CLOSE(fd_notify);
+
+}
+
+static void run(unsigned int i)
+{
+ switch (i) {
+ case 0:
+ test_init_bit(FAN_EVENT_INFO_TID, FAN_CLOSE);
+ break;
+ case 1:
+ test_init_bit(FAN_EVENT_INFO_TID, FAN_OPEN);
+ break;
+ case 2:
+ test_init_bit(FAN_EVENT_INFO_TID, FAN_MODIFY);
+ break;
+ case 3:
+ test_init_bit(FAN_EVENT_INFO_TID, FAN_ACCESS);
+ break;
+ case 4:
+ test_init_bit(0, FAN_CLOSE);
+ break;
+ case 5:
+ test_init_bit(0, FAN_OPEN);
+ break;
+ case 6:
+ test_init_bit(0, FAN_MODIFY);
+ break;
+ case 7:
+ test_init_bit(0, FAN_ACCESS);
+ break;
+ }
+}
+
+static void setup(void)
+{
+ tgid = getpid();
+ sprintf(fname, "tfile_%d", tgid);
+ mkdir(fname, 0755);
+}
+
+static void cleanup(void)
+{
+ rmdir(fname);
+}
+
+static struct tst_test test = {
+ .test = run,
+ .tcnt = 8,
+ .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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