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      1 // SPDX-License-Identifier: GPL-2.0
      2 /*
      3  * Copyright (c) 2017 RedHat.  All Rights Reserved.
      4  *
      5  * Started by Xiong Zhou <xzhou (at) redhat.com>
      6  *
      7  * DESCRIPTION
      8  *     Sanity check fanotify_init flag FAN_CLOEXEC by fcntl.
      9  */
     10 #define _GNU_SOURCE
     11 #include "config.h"
     12 
     13 #include <stdio.h>
     14 #include <sys/stat.h>
     15 #include <sys/types.h>
     16 #include <fcntl.h>
     17 #include <errno.h>
     18 #include <string.h>
     19 #include <sys/syscall.h>
     20 #include "tst_test.h"
     21 #include "fanotify.h"
     22 
     23 #if defined(HAVE_SYS_FANOTIFY_H)
     24 #include <sys/fanotify.h>
     25 
     26 static int fd_notify;
     27 
     28 static void test_init_bit(unsigned int fan_bit,
     29 			unsigned int fd_bit, char *msg)
     30 {
     31 	int ret;
     32 
     33 	fd_notify = SAFE_FANOTIFY_INIT(FAN_CLASS_NOTIF|fan_bit, O_RDONLY);
     34 
     35 	ret = SAFE_FCNTL(fd_notify, F_GETFD);
     36 
     37 	if ((ret & FD_CLOEXEC) == fd_bit) {
     38 		tst_res(TPASS, "%s", msg);
     39 	} else {
     40 		tst_res(TFAIL, "%s", msg);
     41 	}
     42 
     43 	SAFE_CLOSE(fd_notify);
     44 }
     45 
     46 static void run(unsigned int i)
     47 {
     48 	switch (i) {
     49 	case 0:
     50 		test_init_bit(0, 0, "not set close_on_exec");
     51 		break;
     52 	case 1:
     53 		test_init_bit(FAN_CLOEXEC, FD_CLOEXEC, "set close_on_exec");
     54 		break;
     55 	}
     56 }
     57 
     58 static void cleanup(void)
     59 {
     60 	if (fd_notify > 0)
     61 		SAFE_CLOSE(fd_notify);
     62 }
     63 
     64 static struct tst_test test = {
     65 	.test = run,
     66 	.tcnt = 2,
     67 	.cleanup = cleanup,
     68 	.needs_root = 1,
     69 };
     70 
     71 #else
     72 	TST_TEST_TCONF("system doesn't have required fanotify support");
     73 #endif
     74