diff options
Diffstat (limited to 'REORG.TODO/posix/tst-preadwrite64.c')
-rw-r--r-- | REORG.TODO/posix/tst-preadwrite64.c | 55 |
1 files changed, 55 insertions, 0 deletions
diff --git a/REORG.TODO/posix/tst-preadwrite64.c b/REORG.TODO/posix/tst-preadwrite64.c new file mode 100644 index 0000000000..2ea3d4ac1f --- /dev/null +++ b/REORG.TODO/posix/tst-preadwrite64.c @@ -0,0 +1,55 @@ +/* Tests for pread64 and pwrite64. + Copyright (C) 2000-2017 Free Software Foundation, Inc. + This file is part of the GNU C Library. + + The GNU C Library is free software; you can redistribute it and/or + modify it under the terms of the GNU Lesser General Public + License as published by the Free Software Foundation; either + version 2.1 of the License, or (at your option) any later version. + + The GNU C Library is distributed in the hope that it will be useful, + but WITHOUT ANY WARRANTY; without even the implied warranty of + MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU + Lesser General Public License for more details. + + You should have received a copy of the GNU Lesser General Public + License along with the GNU C Library; if not, see + <http://www.gnu.org/licenses/>. */ + +#define _FILE_OFFSET_BITS 64 +#include "tst-preadwrite-common.c" + +static int +do_test (void) +{ + ssize_t ret; + + ret = do_test_with_offset (0); + if (ret == -1) + return 1; + + /* Create a sparse file larger than 4GB to check if offset is handled + correctly in p{write,read}64. */ + off_t base_offset = UINT32_MAX + 2048LL; + ret = do_test_with_offset (base_offset); + if (ret == -1) + return 1; + + struct stat st; + if (fstat (fd, &st) == -1) + { + printf ("error: fstat on temporary file failed: %m"); + return 1; + } + + /* The file size should >= base_offset plus bytes read. */ + off_t expected_value = base_offset + ret; + if (st.st_size < expected_value) + { + printf ("error: file size less than expected (%jd > %jd)\n", + (intmax_t) expected_value, (intmax_t) st.st_size); + return 1; + } + + return 0; +} |