free_dir

SFL
Version 2.11

`free_dir`

#include "sfldir.h"
int
free_dir (DIRST *dir)

Synopsis

Frees all strings used in the DIRST. You should call this function to free space allocated by fix dir(). If you try to call free dir() for a DIRST that was not fixed, you will get an error feedback, and (if you compiled with DEBUG defined) an assertion fault. Returns 0 if okay, -1 if there was an error. After a call to free dir(), do not try to access the strings in DIRST; they are all set to point to an empty string.

Source Code - (sfldir.c)

{
    static char
        *empty = "";

    ASSERT (dir-> _fixed);
    if (dir-> _fixed)
      {
        /*  Free allocated strings                                           */
        mem_free (dir-> owner);
        mem_free (dir-> group);
        mem_free (dir-> file_name);

        /*  Now point the strings to an empty string                         */
        dir-> owner     = empty;
        dir-> group     = empty;
        dir-> file_name = empty;

        /*  And mark the DIRST as no longer 'fixed'                          */
        dir-> _fixed    = FALSE;
        return (0);
      }
    else
        return (-1);
}

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