1 /* 2 * Copyright (c) 2017 RedHat. All Rights Reserved. 3 * 4 * This program is free software; you can redistribute it and/or modify it 5 * under the terms of version 2 of the GNU General Public License as 6 * published by the Free Software Foundation. 7 * 8 * This program is distributed in the hope that it would be useful, but 9 * WITHOUT ANY WARRANTY; without even the implied warranty of 10 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. 11 * 12 * Further, this software is distributed without any warranty that it is 13 * free of the rightful claim of any third person regarding infringement 14 * or the like. Any license provided herein, whether implied or 15 * otherwise, applies only to this software file. Patent licenses, if 16 * any, provided herein do not apply to combinations of this program with 17 * other software, or any other product whatsoever. 18 * 19 * You should have received a copy of the GNU General Public License along 20 * with this program; if not, write the Free Software Foundation, Inc., 21 * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA. 22 * 23 * Started by Xiong Zhou <xzhou (at) redhat.com> 24 * 25 * DESCRIPTION 26 * Sanity check fanotify_init flag FAN_CLOEXEC by fcntl. 27 */ 28 #define _GNU_SOURCE 29 #include "config.h" 30 31 #include <stdio.h> 32 #include <sys/stat.h> 33 #include <sys/types.h> 34 #include <fcntl.h> 35 #include <errno.h> 36 #include <string.h> 37 #include <sys/syscall.h> 38 #include "tst_test.h" 39 #include "fanotify.h" 40 41 #if defined(HAVE_SYS_FANOTIFY_H) 42 #include <sys/fanotify.h> 43 44 static int fd_notify; 45 46 static void test_init_bit(unsigned int fan_bit, 47 unsigned int fd_bit, char *msg) 48 { 49 int ret; 50 51 fd_notify = SAFE_FANOTIFY_INIT(FAN_CLASS_NOTIF|fan_bit, O_RDONLY); 52 53 ret = SAFE_FCNTL(fd_notify, F_GETFD); 54 55 if ((ret & FD_CLOEXEC) == fd_bit) { 56 tst_res(TPASS, "%s", msg); 57 } else { 58 tst_res(TFAIL, "%s", msg); 59 } 60 61 SAFE_CLOSE(fd_notify); 62 } 63 64 static void run(unsigned int i) 65 { 66 switch (i) { 67 case 0: 68 test_init_bit(0, 0, "not set close_on_exec"); 69 break; 70 case 1: 71 test_init_bit(FAN_CLOEXEC, FD_CLOEXEC, "set close_on_exec"); 72 break; 73 } 74 } 75 76 static void cleanup(void) 77 { 78 if (fd_notify > 0) 79 SAFE_CLOSE(fd_notify); 80 } 81 82 static struct tst_test test = { 83 .test = run, 84 .tcnt = 2, 85 .cleanup = cleanup, 86 .needs_root = 1, 87 }; 88 89 #else 90 TST_TEST_TCONF("system doesn't have required fanotify support"); 91 #endif 92
