mirror of
https://sourceware.org/git/glibc.git
synced 2025-10-30 10:45:40 +03:00
313 lines
7.9 KiB
C
313 lines
7.9 KiB
C
/* Test for string function add boundaries of usable memory.
|
|
Copyright (C) 1996,1997,1999,2000,2001,2002 Free Software Foundation, Inc.
|
|
This file is part of the GNU C Library.
|
|
Contributed by Ulrich Drepper <drepper@cygnus.com>, 1996.
|
|
|
|
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, write to the Free
|
|
Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA
|
|
02111-1307 USA. */
|
|
|
|
#define _GNU_SOURCE 1
|
|
|
|
/* Make sure we don't test the optimized inline functions if we want to
|
|
test the real implementation. */
|
|
#undef __USE_STRING_INLINES
|
|
|
|
#include <errno.h>
|
|
#include <stdio.h>
|
|
#include <string.h>
|
|
#include <unistd.h>
|
|
#include <sys/mman.h>
|
|
#include <sys/param.h>
|
|
|
|
#ifndef MAX
|
|
#define MAX(a, b) ((a) > (b) ? (a) : (b))
|
|
#endif
|
|
|
|
int
|
|
main (int argc, char *argv[])
|
|
{
|
|
int size = sysconf (_SC_PAGESIZE);
|
|
char *adr, *dest;
|
|
int result = 0;
|
|
|
|
adr = (char *) mmap (NULL, 3 * size, PROT_READ | PROT_WRITE,
|
|
MAP_PRIVATE | MAP_ANON, -1, 0);
|
|
dest = (char *) mmap (NULL, 3 * size, PROT_READ | PROT_WRITE,
|
|
MAP_PRIVATE | MAP_ANON, -1, 0);
|
|
if (adr == MAP_FAILED || dest == MAP_FAILED)
|
|
{
|
|
if (errno == ENOSYS)
|
|
puts ("No test, mmap not available.");
|
|
else
|
|
{
|
|
printf ("mmap failed: %m");
|
|
result = 1;
|
|
}
|
|
}
|
|
else
|
|
{
|
|
int inner, middle, outer;
|
|
|
|
mprotect(adr, size, PROT_NONE);
|
|
mprotect(adr + 2 * size, size, PROT_NONE);
|
|
adr += size;
|
|
|
|
mprotect(dest, size, PROT_NONE);
|
|
mprotect(dest + 2 * size, size, PROT_NONE);
|
|
dest += size;
|
|
|
|
memset (adr, 'T', size);
|
|
|
|
/* strlen test */
|
|
for (outer = size - 1; outer >= MAX (0, size - 128); --outer)
|
|
{
|
|
for (inner = MAX (outer, size - 64); inner < size; ++inner)
|
|
{
|
|
adr[inner] = '\0';
|
|
|
|
if (strlen (&adr[outer]) != (size_t) (inner - outer))
|
|
{
|
|
printf ("strlen flunked for outer = %d, inner = %d\n",
|
|
outer, inner);
|
|
result = 1;
|
|
}
|
|
|
|
adr[inner] = 'T';
|
|
}
|
|
}
|
|
|
|
/* strchr test */
|
|
for (outer = size - 1; outer >= MAX (0, size - 128); --outer)
|
|
{
|
|
for (middle = MAX (outer, size - 64); middle < size; ++middle)
|
|
{
|
|
for (inner = middle; inner < size; ++inner)
|
|
{
|
|
char *cp;
|
|
adr[middle] = 'V';
|
|
adr[inner] = '\0';
|
|
|
|
cp = strchr (&adr[outer], 'V');
|
|
|
|
if ((inner == middle && cp != NULL)
|
|
|| (inner != middle
|
|
&& (cp - &adr[outer]) != middle - outer))
|
|
{
|
|
printf ("strchr flunked for outer = %d, middle = %d, "
|
|
"inner = %d\n", outer, middle, inner);
|
|
result = 1;
|
|
}
|
|
|
|
adr[inner] = 'T';
|
|
adr[middle] = 'T';
|
|
}
|
|
}
|
|
}
|
|
|
|
/* Special test. */
|
|
adr[size - 1] = '\0';
|
|
if (strchr (&adr[size - 1], '\n') != NULL)
|
|
{
|
|
puts ("strchr flunked for test of empty string at end of page");
|
|
result = 1;
|
|
}
|
|
|
|
/* strrchr test */
|
|
for (outer = size - 1; outer >= MAX (0, size - 128); --outer)
|
|
{
|
|
for (middle = MAX (outer, size - 64); middle < size; ++middle)
|
|
{
|
|
for (inner = middle; inner < size; ++inner)
|
|
{
|
|
char *cp;
|
|
adr[middle] = 'V';
|
|
adr[inner] = '\0';
|
|
|
|
cp = strrchr (&adr[outer], 'V');
|
|
|
|
if ((inner == middle && cp != NULL)
|
|
|| (inner != middle
|
|
&& (cp - &adr[outer]) != middle - outer))
|
|
{
|
|
printf ("strrchr flunked for outer = %d, middle = %d, "
|
|
"inner = %d\n", outer, middle, inner);
|
|
result = 1;
|
|
}
|
|
|
|
adr[inner] = 'T';
|
|
adr[middle] = 'T';
|
|
}
|
|
}
|
|
}
|
|
|
|
/* rawmemchr test */
|
|
for (outer = size - 1; outer >= MAX (0, size - 128); --outer)
|
|
{
|
|
for (middle = MAX (outer, size - 64); middle < size; ++middle)
|
|
{
|
|
char *cp;
|
|
adr[middle] = 'V';
|
|
|
|
cp = rawmemchr (&adr[outer], 'V');
|
|
|
|
if (cp - &adr[outer] != middle - outer)
|
|
{
|
|
printf ("rawmemchr flunked for outer = %d, middle = %d\n",
|
|
outer, middle);
|
|
result = 1;
|
|
}
|
|
|
|
adr[middle] = 'T';
|
|
}
|
|
}
|
|
|
|
/* strcpy test */
|
|
for (outer = size - 1; outer >= MAX (0, size - 128); --outer)
|
|
{
|
|
for (inner = MAX (outer, size - 64); inner < size; ++inner)
|
|
{
|
|
adr[inner] = '\0';
|
|
|
|
if (strcpy (dest, &adr[outer]) != dest
|
|
|| strlen (dest) != (size_t) (inner - outer))
|
|
{
|
|
printf ("strcpy flunked for outer = %d, inner = %d\n",
|
|
outer, inner);
|
|
result = 1;
|
|
}
|
|
|
|
adr[inner] = 'T';
|
|
}
|
|
}
|
|
|
|
/* strncpy tests */
|
|
adr[size-1] = 'T';
|
|
for (outer = size - 1; outer >= MAX (0, size - 128); --outer)
|
|
{
|
|
size_t len;
|
|
|
|
for (len = 0; len < size - outer; ++len)
|
|
{
|
|
if (strncpy (dest, &adr[outer], len) != dest
|
|
|| memcmp (dest, &adr[outer], len) != 0)
|
|
{
|
|
printf ("outer strncpy flunked for outer = %d, len = %Zd\n",
|
|
outer, len);
|
|
result = 1;
|
|
}
|
|
}
|
|
}
|
|
adr[size-1] = '\0';
|
|
|
|
for (outer = size - 1; outer >= MAX (0, size - 128); --outer)
|
|
{
|
|
for (inner = MAX (outer, size - 64); inner < size; ++inner)
|
|
{
|
|
size_t len;
|
|
|
|
adr[inner] = '\0';
|
|
|
|
for (len = 0; len < size - outer + 64; ++len)
|
|
{
|
|
if (strncpy (dest, &adr[outer], len) != dest
|
|
|| memcmp (dest, &adr[outer],
|
|
MIN (inner - outer, len)) != 0
|
|
|| (inner - outer < len
|
|
&& strlen (dest) != (inner - outer)))
|
|
{
|
|
printf ("strncpy flunked for outer = %d, inner = %d, len = %Zd\n",
|
|
outer, inner, len);
|
|
result = 1;
|
|
}
|
|
if (strncpy (dest + 1, &adr[outer], len) != dest + 1
|
|
|| memcmp (dest + 1, &adr[outer],
|
|
MIN (inner - outer, len)) != 0
|
|
|| (inner - outer < len
|
|
&& strlen (dest + 1) != (inner - outer)))
|
|
{
|
|
printf ("strncpy+1 flunked for outer = %d, inner = %d, len = %Zd\n",
|
|
outer, inner, len);
|
|
result = 1;
|
|
}
|
|
}
|
|
|
|
adr[inner] = 'T';
|
|
}
|
|
}
|
|
|
|
/* stpcpy test */
|
|
for (outer = size - 1; outer >= MAX (0, size - 128); --outer)
|
|
{
|
|
for (inner = MAX (outer, size - 64); inner < size; ++inner)
|
|
{
|
|
adr[inner] = '\0';
|
|
|
|
if ((stpcpy (dest, &adr[outer]) - dest) != inner - outer)
|
|
{
|
|
printf ("stpcpy flunked for outer = %d, inner = %d\n",
|
|
outer, inner);
|
|
result = 1;
|
|
}
|
|
|
|
adr[inner] = 'T';
|
|
}
|
|
}
|
|
|
|
/* stpncpy test */
|
|
for (outer = size - 1; outer >= MAX (0, size - 128); --outer)
|
|
{
|
|
for (middle = MAX (outer, size - 64); middle < size; ++middle)
|
|
{
|
|
adr[middle] = '\0';
|
|
|
|
for (inner = 0; inner < size - outer; ++ inner)
|
|
{
|
|
if ((stpncpy (dest, &adr[outer], inner) - dest)
|
|
!= MIN (inner, middle - outer))
|
|
{
|
|
printf ("stpncpy flunked for outer = %d, middle = %d, "
|
|
"inner = %d\n", outer, middle, inner);
|
|
result = 1;
|
|
}
|
|
}
|
|
|
|
adr[middle] = 'T';
|
|
}
|
|
}
|
|
|
|
/* memcpy test */
|
|
for (outer = size - 1; outer >= MAX (0, size - 128); --outer)
|
|
for (inner = 0; inner < size - outer; ++inner)
|
|
if (memcpy (dest, &adr[outer], inner) != dest)
|
|
{
|
|
printf ("memcpy flunked for outer = %d, inner = %d\n",
|
|
outer, inner);
|
|
result = 1;
|
|
}
|
|
|
|
/* mempcpy test */
|
|
for (outer = size - 1; outer >= MAX (0, size - 128); --outer)
|
|
for (inner = 0; inner < size - outer; ++inner)
|
|
if (mempcpy (dest, &adr[outer], inner) != dest + inner)
|
|
{
|
|
printf ("mempcpy flunked for outer = %d, inner = %d\n",
|
|
outer, inner);
|
|
result = 1;
|
|
}
|
|
}
|
|
|
|
return result;
|
|
}
|