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#include <sys/types.h>
#include <sys/stat.h>
#include <fcntl.h>
#include <errno.h>
#include <stdio.h>
#define THE_COOKIE ((void *) 0xdeadbeeful)
static int errors;
static int cookieread_called;
static ssize_t
cookieread (void *cookie, char *buf, size_t count)
{
printf ("`%s' called with cookie %#lx\n", __FUNCTION__,
(unsigned long int) cookie);
if (cookie != THE_COOKIE)
++errors;
cookieread_called = 1;
return 42;
}
static int cookiewrite_called;
static ssize_t
cookiewrite (void *cookie, const char *buf, size_t count)
{
printf ("`%s' called with cookie %#lx\n", __FUNCTION__,
(unsigned long int) cookie);
if (cookie != THE_COOKIE)
++errors;
cookiewrite_called = 1;
return 43;
}
static int cookieseek_called;
static int
cookieseek (void *cookie, off64_t *offset, int whence)
{
printf ("`%s' called with cookie %#lx\n", __FUNCTION__,
(unsigned long int) cookie);
if (cookie != THE_COOKIE)
++errors;
cookieseek_called = 1;
return 44;
}
static int cookieclose_called;
static int
cookieclose (void *cookie)
{
printf ("`%s' called with cookie %#lx\n", __FUNCTION__,
(unsigned long int) cookie);
if (cookie != THE_COOKIE)
++errors;
cookieclose_called = 1;
return 45;
}
int
main (void)
{
cookie_io_functions_t fcts;
char buf[1];
FILE *f;
fcts.read = cookieread;
fcts.seek = cookieseek;
fcts.close = cookieclose;
fcts.write = cookiewrite;
f = fopencookie (THE_COOKIE, "r+", fcts);
fread (buf, 1, 1, f);
fwrite (buf, 1, 1, f);
fseek (f, 0, SEEK_CUR);
fclose (f);
if (cookieread_called == 0
|| cookiewrite_called == 0
|| cookieseek_called == 0
|| cookieclose_called == 0)
++errors;
return errors != 0;
}
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