src/os/posix/vm/os_posix.hpp

rev 12684 : 8173848: realpath is unsafe
Summary: Fix occurrences of realpath in hotspot to use safe POSIX.1-2008 form, if possible.
Reviewed-by:
rev 12685 : [mq]: 8173828-realpath-is-unsafe-2

*** 98,108 ****
  
    // A safe implementation of realpath which will not cause a buffer overflow if the resolved path
    //   is longer than PATH_MAX.
    // On success, it will return a pointer to the input buffer.
    // On error, it will return NULL and set errno. Content of output buffer is undefined.
!   // On truncation error (output buffer too small), it will return NULL and set errno to EINVAL.
    static char* realpath(const char* filename, char* outbuf, size_t outbuflen);
  
  };
  
  /*
--- 98,108 ----
  
    // A safe implementation of realpath which will not cause a buffer overflow if the resolved path
    //   is longer than PATH_MAX.
    // On success, it will return a pointer to the input buffer.
    // On error, it will return NULL and set errno. Content of output buffer is undefined.
!   // On truncation error (output buffer too small), it will return NULL and set errno to ENAMETOOLONG.
    static char* realpath(const char* filename, char* outbuf, size_t outbuflen);
  
  };
  
  /*