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author | Zack Weinberg <zackw@panix.com> | 2017-06-08 15:39:03 -0400 |
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committer | Zack Weinberg <zackw@panix.com> | 2017-06-08 15:39:03 -0400 |
commit | 5046dbb4a7eba5eccfd258f92f4735c9ffc8d069 (patch) | |
tree | 4470480d904b65cf14ca524f96f79eca818c3eaf /REORG.TODO/stdio-common/tst-fmemopen.c | |
parent | 199fc19d3aaaf57944ef036e15904febe877fc93 (diff) | |
download | glibc-zack/build-layout-experiment.tar.gz glibc-zack/build-layout-experiment.tar.xz glibc-zack/build-layout-experiment.zip |
Prepare for radical source tree reorganization. zack/build-layout-experiment
All top-level files and directories are moved into a temporary storage directory, REORG.TODO, except for files that will certainly still exist in their current form at top level when we're done (COPYING, COPYING.LIB, LICENSES, NEWS, README), all old ChangeLog files (which are moved to the new directory OldChangeLogs, instead), and the generated file INSTALL (which is just deleted; in the new order, there will be no generated files checked into version control).
Diffstat (limited to 'REORG.TODO/stdio-common/tst-fmemopen.c')
-rw-r--r-- | REORG.TODO/stdio-common/tst-fmemopen.c | 165 |
1 files changed, 165 insertions, 0 deletions
diff --git a/REORG.TODO/stdio-common/tst-fmemopen.c b/REORG.TODO/stdio-common/tst-fmemopen.c new file mode 100644 index 0000000000..0f90f40bdb --- /dev/null +++ b/REORG.TODO/stdio-common/tst-fmemopen.c @@ -0,0 +1,165 @@ +/* basic fmemopen interface testing. + Copyright (C) 2014-2017 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" |