memcheck/tests/freebsd/realpathat.c

   1 #include <stdlib.h>
   2 #include <string.h>
   3 #include <limits.h>
   4 #include <sys/syscall.h>
   5 #include <unistd.h>
   6 #include <sys/fcntl.h>
   7
   8 int main(void)
   9 {
  10    // good
  11    char buf[PATH_MAX];
  12    char* self_path = "../../tests/freebsd/realpath.c";
  13    realpath(self_path, buf);
  14
  15    // bad
  16    int * bad_int1 = malloc(sizeof(char));
  17    int * bad_int2 = malloc(sizeof(char));
  18    size_t * bad_sz = malloc(sizeof(char));
  19    *bad_int1 = AT_FDCWD;
  20    *bad_int2 = 0;
  21    *bad_sz = PATH_MAX;
  22    syscall(SYS___realpathat, *bad_int1, self_path, buf, *bad_sz,  *bad_int2);
  23    free(bad_int1);
  24    free(bad_int2);
  25
  26    // ugly
  27    char * bad_buf = malloc(100);
  28    char* bad_buf2 = strdup(self_path);
  29    free(bad_buf);
  30    free(bad_buf2);
  31    // fingers crossed
  32    realpath(bad_buf2, bad_buf);
  33
  34
  35 }