| /* basic fmemopen interface testing. |
| Copyright (C) 2014-2018 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/>. */ |
| |
| #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" |