1 /* 2 * Copyright (c) International Business Machines Corp., 2001 3 * 07/2001 Ported by Wayne Boyer 4 * 06/2017 Modified by Guangwen Feng <fenggw-fnst (at) cn.fujitsu.com> 5 * 6 * This program is free software; you can redistribute it and/or modify 7 * it under the terms of the GNU General Public License as published by 8 * the Free Software Foundation; either version 2 of the License, or 9 * (at your option) any later version. 10 * 11 * This program is distributed in the hope that it will be useful, 12 * but WITHOUT ANY WARRANTY; without even the implied warranty of 13 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See 14 * the GNU General Public License for more details. 15 * 16 * You should have received a copy of the GNU General Public License 17 * along with this program; if not, write to the Free Software 18 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA 19 */ 20 21 /* 22 * DESCRIPTION 23 * Open a file with oflag = O_CREAT set, does it set the sticky bit off? 24 * Open a dir with O_DIRECTORY, does it set the S_IFDIR bit on? 25 * 26 * ALGORITHM 27 * 1. open a new file with O_CREAT, fstat.st_mode should not have the 28 * 01000 bit on. In Linux, the save text bit is *NOT* cleared. 29 * 2. open a new dir with O_DIRECTORY, fstat.st_mode should have the 30 * 040000 bit on. 31 */ 32 33 #define _GNU_SOURCE /* for O_DIRECTORY */ 34 #include <sys/types.h> 35 #include <sys/stat.h> 36 #include <fcntl.h> 37 #include <errno.h> 38 #include "tst_test.h" 39 40 #define TEST_FILE "testfile" 41 #define TEST_DIR "testdir" 42 43 static int fd; 44 45 static struct tcase { 46 char *filename; 47 int flag; 48 mode_t mode; 49 unsigned short tst_bit; 50 char *desc; 51 } tcases[] = { 52 {TEST_FILE, O_RDWR | O_CREAT, 01444, S_ISVTX, "Sticky bit"}, 53 {TEST_DIR, O_DIRECTORY, 0, S_IFDIR, "Directory bit"} 54 }; 55 56 static void verify_open(unsigned int n) 57 { 58 struct tcase *tc = &tcases[n]; 59 struct stat buf; 60 61 TEST(open(tc->filename, tc->flag, tc->mode)); 62 fd = TEST_RETURN; 63 if (fd == -1) { 64 tst_res(TFAIL, "Cannot open a file"); 65 return; 66 } 67 68 SAFE_FSTAT(fd, &buf); 69 if (!(buf.st_mode & tc->tst_bit)) 70 tst_res(TFAIL, "%s is cleared unexpectedly", tc->desc); 71 else 72 tst_res(TPASS, "%s is set as expected", tc->desc); 73 74 SAFE_CLOSE(fd); 75 if (S_ISREG(buf.st_mode)) 76 SAFE_UNLINK(tc->filename); 77 } 78 79 static void setup(void) 80 { 81 SAFE_MKDIR(TEST_DIR, 0755); 82 } 83 84 static void cleanup(void) 85 { 86 if (fd > 0) 87 SAFE_CLOSE(fd); 88 } 89 90 static struct tst_test test = { 91 .tcnt = ARRAY_SIZE(tcases), 92 .needs_tmpdir = 1, 93 .setup = setup, 94 .cleanup = cleanup, 95 .test = verify_open, 96 }; 97
