1 /*
   2  * CDDL HEADER START
   3  *
   4  * The contents of this file are subject to the terms of the
   5  * Common Development and Distribution License, Version 1.0 only
   6  * (the "License").  You may not use this file except in compliance
   7  * with the License.
   8  *
   9  * You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE
  10  * or http://www.opensolaris.org/os/licensing.
  11  * See the License for the specific language governing permissions
  12  * and limitations under the License.
  13  *
  14  * When distributing Covered Code, include this CDDL HEADER in each
  15  * file and include the License file at usr/src/OPENSOLARIS.LICENSE.
  16  * If applicable, add the following below this CDDL HEADER, with the
  17  * fields enclosed by brackets "[]" replaced with your own identifying
  18  * information: Portions Copyright [yyyy] [name of copyright owner]
  19  *
  20  * CDDL HEADER END
  21  */
  22 /*
  23  * Copyright (c) 2000 by Sun Microsystems, Inc.
  24  * All rights reserved.
  25  */
  26 
  27 #pragma ident   "%Z%%M% %I%     %E% SMI"
  28 
  29 /*
  30  * This file contains public API functions for module-level tasks.  For the
  31  * semantics of these functions, please see the Enterprise DHCP
  32  * Architecture Document.
  33  */
  34 
  35 #include <assert.h>
  36 #include <stdlib.h>
  37 #include <unistd.h>
  38 #include <sys/types.h>
  39 #include <sys/socket.h>
  40 #include <netinet/in.h>
  41 #include <libgen.h>
  42 #include <errno.h>
  43 #include <dhcp_svc_public.h>
  44 
  45 #include "util.h"
  46 
  47 /*
  48  * This symbol and its value tell the private layer that it must provide
  49  * synchronization guarantees via dsvclockd(1M) before calling our *_dn()
  50  * and *_dt() methods.  Please see $SRC/lib/libdhcpsvc/private/README.synch
  51  */
  52 int dsvc_synchtype = DSVC_SYNCH_DSVCD;
  53 
  54 int
  55 status(const char *location)
  56 {
  57         if (location != NULL) {
  58                 if (access(location, F_OK|R_OK) == -1) {
  59                         if (errno == ENOENT)
  60                                 return (DSVC_NO_LOCATION);
  61                         return (syserr_to_dsvcerr(errno));
  62                 }
  63         }
  64         return (DSVC_SUCCESS);
  65 }
  66 
  67 int
  68 version(int *vp)
  69 {
  70         *vp = DSVC_PUBLIC_VERSION;
  71         return (DSVC_SUCCESS);
  72 }
  73 
  74 int
  75 mklocation(const char *directory)
  76 {
  77         if (mkdirp(directory, 0755) == -1) {
  78                 switch (errno) {
  79                 case ENAMETOOLONG:
  80                 case ENOTDIR:
  81                         return (DSVC_INVAL);
  82 
  83                 case EEXIST:
  84                         return (DSVC_EXISTS);
  85 
  86                 case EROFS:
  87                 case EPERM:
  88                 case EACCES:
  89                         return (DSVC_ACCESS);
  90 
  91                 default:
  92                         return (DSVC_INTERNAL);
  93                 }
  94         }
  95 
  96         return (DSVC_SUCCESS);
  97 }
  98 
  99 int
 100 mkloctoken(const char *location, char *token, size_t tokensize)
 101 {
 102         assert(tokensize >= MAXPATHLEN);
 103         if (realpath(location, token) == NULL)
 104                 return (syserr_to_dsvcerr(errno));
 105 
 106         return (DSVC_SUCCESS);
 107 }