1.1 --- /dev/null	Thu Jan 01 00:00:00 1970 +0000
     1.2 +++ b/src/osdep/unix/opendir.c	Mon Sep 14 15:17:45 2009 +0900
     1.3 @@ -0,0 +1,79 @@
     1.4 +/* ========================================================================
     1.5 + * Copyright 1988-2006 University of Washington
     1.6 + *
     1.7 + * Licensed under the Apache License, Version 2.0 (the "License");
     1.8 + * you may not use this file except in compliance with the License.
     1.9 + * You may obtain a copy of the License at
    1.10 + *
    1.11 + *     http://www.apache.org/licenses/LICENSE-2.0
    1.12 + *
    1.13 + * 
    1.14 + * ========================================================================
    1.15 + */
    1.16 +
    1.17 +/*
    1.18 + * Program:	Read directories
    1.19 + *
    1.20 + * Author:	Mark Crispin
    1.21 + *		Networks and Distributed Computing
    1.22 + *		Computing & Communications
    1.23 + *		University of Washington
    1.24 + *		Administration Building, AG-44
    1.25 + *		Seattle, WA  98195
    1.26 + *		Internet: MRC@CAC.Washington.EDU
    1.27 + *
    1.28 + * Date:	16 December 1993
    1.29 + * Last Edited:	30 August 2006
    1.30 + */
    1.31 +
    1.32 +/* Emulator for BSD opendir() call
    1.33 + * Accepts: directory name
    1.34 + * Returns: directory structure pointer
    1.35 + */
    1.36 +
    1.37 +DIR *opendir (char *name)
    1.38 +{
    1.39 +  DIR *d = NIL;
    1.40 +  struct stat sbuf;
    1.41 +  int fd = open (name,O_RDONLY,NIL);
    1.42 +  errno = ENOTDIR;		/* default error is bogus directory */
    1.43 +  if ((fd >= 0) && !(fstat (fd,&sbuf)) && ((sbuf.st_mode&S_IFMT) == S_IFDIR)) {
    1.44 +    d = (DIR *) fs_get (sizeof (DIR));
    1.45 +				/* initialize structure */
    1.46 +    d->dd_loc = 0;
    1.47 +    read (fd,d->dd_buf = (char *) fs_get (sbuf.st_size),
    1.48 +	  d->dd_size = sbuf.st_size);
    1.49 +  }
    1.50 +  else if (d) fs_give ((void **) &d);
    1.51 +  if (fd >= 0) close (fd);
    1.52 +  return d;
    1.53 +}
    1.54 +
    1.55 +
    1.56 +/* Emulator for BSD closedir() call
    1.57 + * Accepts: directory structure pointer
    1.58 + */
    1.59 +
    1.60 +int closedir (DIR *d)
    1.61 +{
    1.62 +				/* free storage */
    1.63 +  fs_give ((void **) &(d->dd_buf));
    1.64 +  fs_give ((void **) &d);
    1.65 +  return NIL;			/* return */
    1.66 +}
    1.67 +
    1.68 +
    1.69 +/* Emulator for BSD readdir() call
    1.70 + * Accepts: directory structure pointer
    1.71 + */
    1.72 +
    1.73 +struct direct *readdir (DIR *d)
    1.74 +{
    1.75 +				/* loop through directory */
    1.76 +  while (d->dd_loc < d->dd_size) {
    1.77 +    struct direct *dp = (struct direct *) (d->dd_buf + d->dd_loc);
    1.78 +    d->dd_loc += sizeof (struct direct);
    1.79 +    if (dp->d_ino) return dp;	/* if have a good entry return it */
    1.80 +  }
    1.81 +  return NIL;			/* all done */
    1.82 +}