mirror of
https://sourceware.org/git/glibc.git
synced 2024-12-13 06:40:09 +00:00
166 lines
3.6 KiB
C
166 lines
3.6 KiB
C
/* basic fmemopen interface testing.
|
|
Copyright (C) 2014-2023 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
|
|
<https://www.gnu.org/licenses/>. */
|
|
|
|
#include <errno.h>
|
|
#include <fcntl.h>
|
|
#include <stdio.h>
|
|
#include <stdlib.h>
|
|
#include <string.h>
|
|
#include <unistd.h>
|
|
#include <sys/mman.h>
|
|
#include <sys/stat.h>
|
|
#include <sys/types.h>
|
|
|
|
static char *test_file;
|
|
|
|
static void
|
|
do_prepare (int argc, char *argv[])
|
|
{
|
|
/* Construct the test file name based on ARGV[0], which will be
|
|
an absolute file name in the build directory. Don't touch the
|
|
source directory, which might be read-only. */
|
|
if (asprintf (&test_file, "%s.test", argv[0]) < 0)
|
|
{
|
|
puts ("asprintf failed\n");
|
|
exit (EXIT_FAILURE);
|
|
}
|
|
}
|
|
|
|
static int
|
|
do_test (void)
|
|
{
|
|
const char blah[] = "BLAH";
|
|
FILE *fp;
|
|
char *mmap_data;
|
|
int ch, fd;
|
|
struct stat fs;
|
|
const char *cp;
|
|
|
|
/* setup the physical file, and use it */
|
|
if ((fp = fopen (test_file, "w+")) == NULL)
|
|
return 1;
|
|
if (fwrite (blah, 1, strlen (blah), fp) != strlen (blah))
|
|
{
|
|
fclose (fp);
|
|
return 2;
|
|
}
|
|
|
|
rewind (fp);
|
|
printf ("file: ");
|
|
cp = blah;
|
|
while ((ch = getc (fp)) != EOF)
|
|
{
|
|
fputc (ch, stdout);
|
|
if (ch != *cp)
|
|
{
|
|
printf ("\ncharacter %td: '%c' instead of '%c'\n",
|
|
cp - blah, ch, *cp);
|
|
fclose (fp);
|
|
return 1;
|
|
}
|
|
++cp;
|
|
}
|
|
fputc ('\n', stdout);
|
|
if (ferror (fp))
|
|
{
|
|
puts ("fp: error");
|
|
fclose (fp);
|
|
return 1;
|
|
}
|
|
if (feof (fp))
|
|
printf ("fp: EOF\n");
|
|
else
|
|
{
|
|
puts ("not EOF");
|
|
fclose (fp);
|
|
return 1;
|
|
}
|
|
fclose (fp);
|
|
|
|
/* Now, mmap the file into a buffer, and do that too */
|
|
if ((fd = open (test_file, O_RDONLY)) == -1)
|
|
{
|
|
printf ("open (%s, O_RDONLY) failed\n", test_file);
|
|
return 3;
|
|
}
|
|
if (fstat (fd, &fs) == -1)
|
|
{
|
|
printf ("stat (%i)\n", fd);
|
|
return 4;
|
|
}
|
|
|
|
if ((mmap_data = (char *) mmap (NULL, fs.st_size, PROT_READ,
|
|
MAP_SHARED, fd, 0)) == MAP_FAILED)
|
|
{
|
|
printf ("mmap (NULL, %zu, PROT_READ, MAP_SHARED, %i, 0) failed\n",
|
|
(size_t) fs.st_size, fd);
|
|
return 5;
|
|
}
|
|
|
|
if ((fp = fmemopen (mmap_data, fs.st_size, "r")) == NULL)
|
|
{
|
|
printf ("fmemopen (%p, %zu) failed\n", mmap_data, (size_t) fs.st_size);
|
|
return 1;
|
|
}
|
|
|
|
printf ("mem: ");
|
|
cp = blah;
|
|
while ((ch = getc (fp)) != EOF)
|
|
{
|
|
fputc (ch, stdout);
|
|
if (ch != *cp)
|
|
{
|
|
printf ("%td character: '%c' instead of '%c'\n",
|
|
cp - blah, ch, *cp);
|
|
fclose (fp);
|
|
return 1;
|
|
}
|
|
++cp;
|
|
}
|
|
|
|
fputc ('\n', stdout);
|
|
|
|
if (ferror (fp))
|
|
{
|
|
puts ("fp: error");
|
|
fclose (fp);
|
|
return 1;
|
|
}
|
|
if (feof (fp))
|
|
printf ("fp: EOF\n");
|
|
else
|
|
{
|
|
puts ("not EOF");
|
|
fclose (fp);
|
|
return 1;
|
|
}
|
|
|
|
fclose (fp);
|
|
|
|
munmap (mmap_data, fs.st_size);
|
|
|
|
unlink (test_file);
|
|
free (test_file);
|
|
|
|
return 0;
|
|
}
|
|
|
|
#define PREPARE(argc, argv) do_prepare (argc, argv)
|
|
#define TEST_FUNCTION do_test ()
|
|
#include "../test-skeleton.c"
|