diff options
Diffstat (limited to 'posix/tst-preadwrite64.c')
| -rw-r--r-- | posix/tst-preadwrite64.c | 40 |
1 files changed, 36 insertions, 4 deletions
diff --git a/posix/tst-preadwrite64.c b/posix/tst-preadwrite64.c index 27425be342..00af21a242 100644 --- a/posix/tst-preadwrite64.c +++ b/posix/tst-preadwrite64.c @@ -1,7 +1,6 @@ /* Tests for pread64 and pwrite64. Copyright (C) 2000-2016 Free Software Foundation, Inc. This file is part of the GNU C Library. - Contributed by Ulrich Drepper <drepper@cygnus.com>, 1998. The GNU C Library is free software; you can redistribute it and/or modify it under the terms of the GNU Lesser General Public @@ -17,7 +16,40 @@ License along with the GNU C Library; if not, see <http://www.gnu.org/licenses/>. */ -#define PREAD pread64 -#define PWRITE pwrite64 +#define _FILE_OFFSET_BITS 64 +#include "tst-preadwrite-common.c" -#include "tst-preadwrite.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; +} |