diff options
Diffstat (limited to 'posix')
| -rw-r--r-- | posix/Makefile | 3 | ||||
| -rw-r--r-- | posix/tst-preadwrite.c | 91 |
2 files changed, 93 insertions, 1 deletions
diff --git a/posix/Makefile b/posix/Makefile index 77471c8eee..ff185dcbe8 100644 --- a/posix/Makefile +++ b/posix/Makefile @@ -55,7 +55,8 @@ routines := \ include ../Makeconfig aux := init-posix environ -tests := tstgetopt testfnm runtests wordexp-test runptests +tests := tstgetopt testfnm runtests wordexp-test runptests \ + tst-preadwrite test-srcs := globtest others := getconf install-bin := getconf diff --git a/posix/tst-preadwrite.c b/posix/tst-preadwrite.c new file mode 100644 index 0000000000..68379bf036 --- /dev/null +++ b/posix/tst-preadwrite.c @@ -0,0 +1,91 @@ +/* Tests for pread and pwrite. + Copyright (C) 1998 Free Software Foundation, Inc. + 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 Library General Public License as + published by the Free Software Foundation; either version 2 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 + Library General Public License for more details. + + You should have received a copy of the GNU Library General Public + License along with the GNU C Library; see the file COPYING.LIB. If not, + write to the Free Software Foundation, Inc., 59 Temple Place - Suite 330, + Boston, MA 02111-1307, USA. */ + +#include <errno.h> +#include <error.h> +#include <string.h> +#include <unistd.h> + + +/* Prototype for our test function. */ +extern void do_prepare (int argc, char *argv[]); +extern int do_test (int argc, char *argv[]); + +/* We have a preparation function. */ +#define PREPARE do_prepare + +/* We might need a bit longer timeout. */ +#define TIMEOUT 20 /* sec */ + +/* This defines the `main' function and some more. */ +#include <test-skeleton.c> + +/* These are for the temporary file we generate. */ +char *name; +int fd; + +void +do_prepare (int argc, char *argv[]) +{ + char name_len; + + name_len = strlen (test_dir); + name = malloc (name_len + sizeof ("/preadwriteXXXXXX")); + mempcpy (mempcpy (name, test_dir, name_len), + "/preadwriteXXXXXX", sizeof ("/preadwriteXXXXXX")); + add_temp_file (name); + + /* Open our test file. */ + fd = mkstemp (name); + if (fd == -1) + error (EXIT_FAILURE, errno, "cannot open test file `%s'", name); +} + + +int +do_test (int argc, char *argv[]) +{ + char buf[1000]; + char res[1000]; + int i; + + memset (buf, '\0', sizeof (buf)); + memset (res, '\xff', sizeof (res)); + + if (write (fd, buf, sizeof (buf)) != sizeof (buf)) + error (EXIT_FAILURE, errno, "during write"); + + for (i = 100; i < 200; ++i) + buf[i] = i; + if (pwrite (fd, buf + 100, 100, 100) != 100) + error (EXIT_FAILURE, errno, "during pwrite"); + + for (i = 450; i < 600; ++i) + buf[i] = i; + if (pwrite (fd, buf + 450, 150, 450) != 150) + error (EXIT_FAILURE, errno, "during pwrite"); + + if (pread (fd, res, sizeof (buf) - 50, 50) != sizeof (buf) - 50) + error (EXIT_FAILURE, errno, "during pread"); + + close (fd); + unlink (name); + + return memcmp (buf + 50, res, sizeof (buf) - 50); +} |