mirror of
https://sourceware.org/git/glibc.git
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350 lines
8.9 KiB
C
350 lines
8.9 KiB
C
/* Test for string function add boundaries of usable memory.
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Copyright (C) 1996,1997,1999-2002,2003 Free Software Foundation, Inc.
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This file is part of the GNU C Library.
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Contributed by Ulrich Drepper <drepper@cygnus.com>, 1996.
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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, write to the Free
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Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA
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02111-1307 USA. */
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#define _GNU_SOURCE 1
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/* Make sure we don't test the optimized inline functions if we want to
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test the real implementation. */
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#undef __USE_STRING_INLINES
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#include <errno.h>
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#include <stdio.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/param.h>
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#ifndef MAX
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#define MAX(a, b) ((a) > (b) ? (a) : (b))
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#endif
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int
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main (int argc, char *argv[])
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{
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int size = sysconf (_SC_PAGESIZE);
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char *adr, *dest;
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int result = 0;
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adr = (char *) mmap (NULL, 3 * size, PROT_READ | PROT_WRITE,
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MAP_PRIVATE | MAP_ANON, -1, 0);
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dest = (char *) mmap (NULL, 3 * size, PROT_READ | PROT_WRITE,
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MAP_PRIVATE | MAP_ANON, -1, 0);
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if (adr == MAP_FAILED || dest == MAP_FAILED)
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{
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if (errno == ENOSYS)
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puts ("No test, mmap not available.");
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else
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{
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printf ("mmap failed: %m");
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result = 1;
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}
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}
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else
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{
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int inner, middle, outer;
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mprotect(adr, size, PROT_NONE);
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mprotect(adr + 2 * size, size, PROT_NONE);
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adr += size;
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mprotect(dest, size, PROT_NONE);
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mprotect(dest + 2 * size, size, PROT_NONE);
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dest += size;
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memset (adr, 'T', size);
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/* strlen test */
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for (outer = size - 1; outer >= MAX (0, size - 128); --outer)
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{
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for (inner = MAX (outer, size - 64); inner < size; ++inner)
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{
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adr[inner] = '\0';
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if (strlen (&adr[outer]) != (size_t) (inner - outer))
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{
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printf ("strlen flunked for outer = %d, inner = %d\n",
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outer, inner);
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result = 1;
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}
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adr[inner] = 'T';
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}
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}
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/* strchr test */
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for (outer = size - 1; outer >= MAX (0, size - 128); --outer)
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{
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for (middle = MAX (outer, size - 64); middle < size; ++middle)
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{
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for (inner = middle; inner < size; ++inner)
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{
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char *cp;
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adr[middle] = 'V';
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adr[inner] = '\0';
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cp = strchr (&adr[outer], 'V');
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if ((inner == middle && cp != NULL)
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|| (inner != middle
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&& (cp - &adr[outer]) != middle - outer))
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{
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printf ("strchr flunked for outer = %d, middle = %d, "
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"inner = %d\n", outer, middle, inner);
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result = 1;
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}
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adr[inner] = 'T';
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adr[middle] = 'T';
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}
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}
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}
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/* Special test. */
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adr[size - 1] = '\0';
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if (strchr (&adr[size - 1], '\n') != NULL)
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{
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puts ("strchr flunked for test of empty string at end of page");
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result = 1;
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}
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/* strrchr test */
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for (outer = size - 1; outer >= MAX (0, size - 128); --outer)
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{
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for (middle = MAX (outer, size - 64); middle < size; ++middle)
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{
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for (inner = middle; inner < size; ++inner)
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{
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char *cp;
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adr[middle] = 'V';
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adr[inner] = '\0';
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cp = strrchr (&adr[outer], 'V');
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if ((inner == middle && cp != NULL)
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|| (inner != middle
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&& (cp - &adr[outer]) != middle - outer))
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{
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printf ("strrchr flunked for outer = %d, middle = %d, "
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"inner = %d\n", outer, middle, inner);
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result = 1;
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}
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adr[inner] = 'T';
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adr[middle] = 'T';
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}
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}
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}
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/* rawmemchr test */
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for (outer = size - 1; outer >= MAX (0, size - 128); --outer)
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{
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for (middle = MAX (outer, size - 64); middle < size; ++middle)
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{
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char *cp;
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adr[middle] = 'V';
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cp = rawmemchr (&adr[outer], 'V');
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if (cp - &adr[outer] != middle - outer)
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{
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printf ("rawmemchr flunked for outer = %d, middle = %d\n",
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outer, middle);
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result = 1;
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}
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adr[middle] = 'T';
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}
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}
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/* strcpy test */
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for (outer = size - 1; outer >= MAX (0, size - 128); --outer)
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{
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for (inner = MAX (outer, size - 64); inner < size; ++inner)
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{
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adr[inner] = '\0';
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if (strcpy (dest, &adr[outer]) != dest
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|| strlen (dest) != (size_t) (inner - outer))
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{
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printf ("strcpy flunked for outer = %d, inner = %d\n",
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outer, inner);
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result = 1;
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}
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adr[inner] = 'T';
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}
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}
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/* strncpy tests */
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adr[size-1] = 'T';
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for (outer = size - 1; outer >= MAX (0, size - 128); --outer)
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{
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size_t len;
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for (len = 0; len < size - outer; ++len)
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{
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if (strncpy (dest, &adr[outer], len) != dest
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|| memcmp (dest, &adr[outer], len) != 0)
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{
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printf ("outer strncpy flunked for outer = %d, len = %Zd\n",
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outer, len);
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result = 1;
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}
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}
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}
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adr[size-1] = '\0';
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for (outer = size - 1; outer >= MAX (0, size - 128); --outer)
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{
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for (inner = MAX (outer, size - 64); inner < size; ++inner)
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{
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size_t len;
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adr[inner] = '\0';
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for (len = 0; len < size - outer + 64; ++len)
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{
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if (strncpy (dest, &adr[outer], len) != dest
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|| memcmp (dest, &adr[outer],
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MIN (inner - outer, len)) != 0
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|| (inner - outer < len
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&& strlen (dest) != (inner - outer)))
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{
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printf ("strncpy flunked for outer = %d, inner = %d, len = %Zd\n",
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outer, inner, len);
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result = 1;
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}
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if (strncpy (dest + 1, &adr[outer], len) != dest + 1
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|| memcmp (dest + 1, &adr[outer],
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MIN (inner - outer, len)) != 0
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|| (inner - outer < len
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&& strlen (dest + 1) != (inner - outer)))
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{
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printf ("strncpy+1 flunked for outer = %d, inner = %d, len = %Zd\n",
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outer, inner, len);
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result = 1;
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}
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}
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adr[inner] = 'T';
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}
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}
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/* stpcpy test */
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for (outer = size - 1; outer >= MAX (0, size - 128); --outer)
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{
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for (inner = MAX (outer, size - 64); inner < size; ++inner)
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{
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adr[inner] = '\0';
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if ((stpcpy (dest, &adr[outer]) - dest) != inner - outer)
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{
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printf ("stpcpy flunked for outer = %d, inner = %d\n",
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outer, inner);
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result = 1;
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}
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adr[inner] = 'T';
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}
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}
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/* stpncpy test */
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for (outer = size - 1; outer >= MAX (0, size - 128); --outer)
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{
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for (middle = MAX (outer, size - 64); middle < size; ++middle)
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{
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adr[middle] = '\0';
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for (inner = 0; inner < size - outer; ++ inner)
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{
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if ((stpncpy (dest, &adr[outer], inner) - dest)
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!= MIN (inner, middle - outer))
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{
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printf ("stpncpy flunked for outer = %d, middle = %d, "
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"inner = %d\n", outer, middle, inner);
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result = 1;
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}
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}
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adr[middle] = 'T';
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}
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}
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/* memcpy test */
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for (outer = size - 1; outer >= MAX (0, size - 128); --outer)
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for (inner = 0; inner < size - outer; ++inner)
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if (memcpy (dest, &adr[outer], inner) != dest)
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{
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printf ("memcpy flunked for outer = %d, inner = %d\n",
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outer, inner);
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result = 1;
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}
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/* mempcpy test */
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for (outer = size - 1; outer >= MAX (0, size - 128); --outer)
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for (inner = 0; inner < size - outer; ++inner)
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if (mempcpy (dest, &adr[outer], inner) != dest + inner)
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{
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printf ("mempcpy flunked for outer = %d, inner = %d\n",
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outer, inner);
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result = 1;
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}
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/* memccpy test */
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memset (adr, '\0', size);
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for (outer = size - 1; outer >= MAX (0, size - 128); --outer)
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for (inner = 0; inner < size - outer; ++inner)
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if (memccpy (dest, &adr[outer], '\1', inner) != NULL)
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{
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printf ("memccpy flunked full copy for outer = %d, inner = %d\n",
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outer, inner);
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result = 1;
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}
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for (outer = size - 1; outer >= MAX (0, size - 128); --outer)
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for (middle = 0; middle < size - outer; ++middle)
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{
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memset (dest, '\2', middle + 1);
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for (inner = 0; inner < middle; ++inner)
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{
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adr[outer + inner] = '\1';
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if (memccpy (dest, &adr[outer], '\1', middle + 128)
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!= dest + inner + 1)
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{
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printf ("\
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memccpy flunked partial copy for outer = %d, middle = %d, inner = %d\n",
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outer, middle, inner);
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result = 1;
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}
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else if (dest[inner + 1] != '\2')
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{
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printf ("\
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memccpy copied too much for outer = %d, middle = %d, inner = %d\n",
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outer, middle, inner);
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result = 1;
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}
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adr[outer + inner] = '\0';
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}
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}
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}
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return result;
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}
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