166 lines
3.6 KiB
C
166 lines
3.6 KiB
C
/* basic fmemopen interface testing.
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Copyright (C) 2014-2017 Free Software Foundation, Inc.
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This file is part of the GNU C Library.
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The GNU C Library is free software; you can redistribute it and/or
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modify it under the terms of the GNU Lesser General Public
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License as published by the Free Software Foundation; either
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version 2.1 of the License, or (at your option) any later version.
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The GNU C Library is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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Lesser General Public License for more details.
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You should have received a copy of the GNU Lesser General Public
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License along with the GNU C Library; if not, see
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<http://www.gnu.org/licenses/>. */
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#include <errno.h>
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#include <fcntl.h>
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#include <stdio.h>
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#include <stdlib.h>
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#include <string.h>
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#include <unistd.h>
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#include <sys/mman.h>
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#include <sys/stat.h>
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#include <sys/types.h>
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static char *test_file;
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static void
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do_prepare (int argc, char *argv[])
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{
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/* Construct the test file name based on ARGV[0], which will be
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an absolute file name in the build directory. Don't touch the
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source directory, which might be read-only. */
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if (asprintf (&test_file, "%s.test", argv[0]) < 0)
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{
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puts ("asprintf failed\n");
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exit (EXIT_FAILURE);
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}
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}
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static int
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do_test (void)
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{
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const char blah[] = "BLAH";
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FILE *fp;
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char *mmap_data;
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int ch, fd;
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struct stat fs;
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const char *cp;
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/* setup the physical file, and use it */
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if ((fp = fopen (test_file, "w+")) == NULL)
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return 1;
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if (fwrite (blah, 1, strlen (blah), fp) != strlen (blah))
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{
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fclose (fp);
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return 2;
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}
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rewind (fp);
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printf ("file: ");
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cp = blah;
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while ((ch = getc (fp)) != EOF)
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{
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fputc (ch, stdout);
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if (ch != *cp)
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{
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printf ("\ncharacter %td: '%c' instead of '%c'\n",
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cp - blah, ch, *cp);
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fclose (fp);
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return 1;
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}
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++cp;
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}
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fputc ('\n', stdout);
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if (ferror (fp))
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{
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puts ("fp: error");
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fclose (fp);
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return 1;
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}
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if (feof (fp))
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printf ("fp: EOF\n");
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else
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{
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puts ("not EOF");
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fclose (fp);
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return 1;
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}
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fclose (fp);
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/* Now, mmap the file into a buffer, and do that too */
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if ((fd = open (test_file, O_RDONLY)) == -1)
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{
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printf ("open (%s, O_RDONLY) failed\n", test_file);
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return 3;
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}
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if (fstat (fd, &fs) == -1)
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{
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printf ("stat (%i)\n", fd);
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return 4;
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}
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if ((mmap_data = (char *) mmap (NULL, fs.st_size, PROT_READ,
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MAP_SHARED, fd, 0)) == MAP_FAILED)
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{
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printf ("mmap (NULL, %zu, PROT_READ, MAP_SHARED, %i, 0) failed\n",
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(size_t) fs.st_size, fd);
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return 5;
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}
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if ((fp = fmemopen (mmap_data, fs.st_size, "r")) == NULL)
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{
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printf ("fmemopen (%p, %zu) failed\n", mmap_data, (size_t) fs.st_size);
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return 1;
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}
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printf ("mem: ");
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cp = blah;
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while ((ch = getc (fp)) != EOF)
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{
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fputc (ch, stdout);
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if (ch != *cp)
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{
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printf ("%td character: '%c' instead of '%c'\n",
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cp - blah, ch, *cp);
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fclose (fp);
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return 1;
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}
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++cp;
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}
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fputc ('\n', stdout);
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if (ferror (fp))
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{
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puts ("fp: error");
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fclose (fp);
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return 1;
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}
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if (feof (fp))
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printf ("fp: EOF\n");
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else
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{
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puts ("not EOF");
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fclose (fp);
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return 1;
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}
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fclose (fp);
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munmap (mmap_data, fs.st_size);
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unlink (test_file);
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free (test_file);
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return 0;
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}
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#define PREPARE(argc, argv) do_prepare (argc, argv)
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#define TEST_FUNCTION do_test ()
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#include "../test-skeleton.c"
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