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116 lines
3.8 KiB
C
116 lines
3.8 KiB
C
/* Test readdir64 compatibility symbol.
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Copyright (C) 2018 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 <dirent.h>
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#include <dlfcn.h>
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#include <errno.h>
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#include <shlib-compat.h>
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#include <stdbool.h>
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#include <stdio.h>
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#include <string.h>
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#include <support/check.h>
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/* Copied from <olddirent.h>. */
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struct __old_dirent64
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{
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__ino_t d_ino;
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__off64_t d_off;
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unsigned short int d_reclen;
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unsigned char d_type;
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char d_name[256];
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};
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typedef struct __old_dirent64 *(*compat_readdir64_type) (DIR *);
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#if TEST_COMPAT (libc, GLIBC_2_1, GLIBC_2_2)
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struct __old_dirent64 *compat_readdir64 (DIR *);
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compat_symbol_reference (libc, compat_readdir64, readdir64, GLIBC_2_1);
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#endif
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static int
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do_test (void)
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{
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#if TEST_COMPAT (libc, GLIBC_2_1, GLIBC_2_2)
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/* Directory stream using the non-compat readdir64 symbol. The test
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checks against this. */
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DIR *dir_reference = opendir (".");
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TEST_VERIFY_EXIT (dir_reference != NULL);
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DIR *dir_test = opendir (".");
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TEST_VERIFY_EXIT (dir_test != NULL);
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/* This loop assumes that the enumeration order is consistent for
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two different handles. Nothing should write to the current
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directory (in the source tree) while this test runs, so there
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should not be any difference due to races. */
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size_t count = 0;
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while (true)
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{
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errno = 0;
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struct dirent64 *entry_reference = readdir64 (dir_reference);
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if (entry_reference == NULL && errno != 0)
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FAIL_EXIT1 ("readdir64 entry %zu: %m\n", count);
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struct __old_dirent64 *entry_test = compat_readdir64 (dir_test);
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if (entry_reference == NULL)
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{
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if (errno == EOVERFLOW)
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{
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TEST_VERIFY (entry_reference->d_ino
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!= (__ino_t) entry_reference->d_ino);
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printf ("info: inode number overflow at entry %zu\n", count);
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break;
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}
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if (errno != 0)
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FAIL_EXIT1 ("compat readdir64 entry %zu: %m\n", count);
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}
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/* Check that both streams end at the same time. */
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if (entry_reference == NULL)
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{
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TEST_VERIFY (entry_test == NULL);
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break;
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}
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else
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TEST_VERIFY_EXIT (entry_test != NULL);
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/* d_off is never zero because it is the offset of the next
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entry (not the current entry). */
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TEST_VERIFY (entry_reference->d_off > 0);
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/* Check that the entries are the same. */
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TEST_COMPARE_BLOB (entry_reference->d_name,
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strlen (entry_reference->d_name),
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entry_test->d_name, strlen (entry_test->d_name));
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TEST_COMPARE (entry_reference->d_ino, entry_test->d_ino);
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TEST_COMPARE (entry_reference->d_off, entry_test->d_off);
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TEST_COMPARE (entry_reference->d_type, entry_test->d_type);
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TEST_COMPARE (entry_reference->d_reclen, entry_test->d_reclen);
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++count;
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}
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printf ("info: %zu directory entries found\n", count);
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TEST_VERIFY (count >= 3); /* ".", "..", and some source files. */
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TEST_COMPARE (closedir (dir_test), 0);
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TEST_COMPARE (closedir (dir_reference), 0);
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#endif
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return 0;
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}
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#include <support/test-driver.c>
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