1 /* Tests for pread64 and pwrite64. 2 Copyright (C) 2016-2022 Free Software Foundation, Inc. 3 This file is part of the GNU C Library. 4 5 The GNU C Library is free software; you can redistribute it and/or 6 modify it under the terms of the GNU Lesser General Public 7 License as published by the Free Software Foundation; either 8 version 2.1 of the License, or (at your option) any later version. 9 10 The GNU C Library is distributed in the hope that it will be useful, 11 but WITHOUT ANY WARRANTY; without even the implied warranty of 12 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU 13 Lesser General Public License for more details. 14 15 You should have received a copy of the GNU Lesser General Public 16 License along with the GNU C Library; if not, see 17 <https://www.gnu.org/licenses/>. */ 18 19 #define _FILE_OFFSET_BITS 64 20 #include "tst-preadvwritev-common.c" 21 22 static int do_test(void)23do_test (void) 24 { 25 int ret; 26 27 ret = do_test_with_offset (0); 28 29 if (!temp_fd_supports_holes) 30 { 31 puts ("warning: partial test due to lack of support for holes"); 32 return ret; 33 } 34 35 /* Create a sparse file larger than 4GB to check if offset is handled 36 correctly in p{write,read}v64. */ 37 off_t base_offset = UINT32_MAX + 2048LL; 38 ret += do_test_with_offset (base_offset); 39 40 struct stat st; 41 if (fstat (temp_fd, &st) == -1) 42 { 43 printf ("error: fstat on temporary file failed: %m"); 44 return 1; 45 } 46 47 /* The total size should base_offset plus 2 * 96. */ 48 off_t expected_value = base_offset + (2 * (96LL)); 49 if (st.st_size != expected_value) 50 { 51 printf ("error: file size different than expected (%jd != %jd)\n", 52 (intmax_t) expected_value, (intmax_t) st.st_size); 53 return 1; 54 } 55 56 return ret; 57 } 58