162 lines
3.6 KiB
C
162 lines
3.6 KiB
C
#define _GNU_SOURCE 1
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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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size_t 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_ANONYMOUS, -1, 0);
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dest = (char *) mmap (NULL, 3*size, PROT_READ|PROT_WRITE,
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MAP_PRIVATE|MAP_ANONYMOUS, -1, 0);
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if (adr == (char *)-1L || dest == (char *)-1L)
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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 ("mmaping 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]) != 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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/* 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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/* 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) != 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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/* 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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}
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return result;
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}
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