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) 2000-2001 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  * WARNING: This file is also compiled into the files0 module; if you make
  35  *          changes to this file which are not appropriate for files0, you
  36  *          will need to provide files0 with its own implementation.
  37  */
  38 
  39 #include <assert.h>
  40 #include <stdlib.h>
  41 #include <unistd.h>
  42 #include <sys/types.h>
  43 #include <sys/socket.h>
  44 #include <netinet/in.h>
  45 #include <libgen.h>
  46 #include <errno.h>
  47 #include <dhcp_svc_public.h>
  48 #include <dhcp_svc_private.h>             /* DSVC_SYNCH_CROSSHOST */
  49 
  50 #include "util.h"
  51 
  52 /*
  53  * This symbol and its value tell the private layer that it must provide
  54  * synchronization guarantees via dsvclockd(1M) before calling our *_dn()
  55  * and *_dt() methods.  Please see $SRC/lib/libdhcpsvc/private/README.synch
  56  */
  57 int dsvc_synchtype = DSVC_SYNCH_DSVCD | DSVC_SYNCH_CROSSHOST;
  58 
  59 int
  60 status(const char *location)
  61 {
  62         if (location != NULL) {
  63                 if (access(location, F_OK|R_OK) == -1) {
  64                         if (errno == ENOENT)
  65                                 return (DSVC_NO_LOCATION);
  66                         return (syserr_to_dsvcerr(errno));
  67                 }
  68         }
  69         return (DSVC_SUCCESS);
  70 }
  71 
  72 int
  73 version(int *vp)
  74 {
  75         *vp = DSVC_PUBLIC_VERSION;
  76         return (DSVC_SUCCESS);
  77 }
  78 
  79 int
  80 mklocation(const char *location)
  81 {
  82         if (mkdirp(location, 0755) == -1) {
  83                 switch (errno) {
  84                 case ENAMETOOLONG:
  85                 case ENOTDIR:
  86                         return (DSVC_INVAL);
  87 
  88                 case EEXIST:
  89                         return (DSVC_EXISTS);
  90 
  91                 case EROFS:
  92                 case EPERM:
  93                 case EACCES:
  94                         return (DSVC_ACCESS);
  95 
  96                 default:
  97                         return (DSVC_INTERNAL);
  98                 }
  99         }
 100 
 101         return (DSVC_SUCCESS);
 102 }
 103 
 104 int
 105 mkloctoken(const char *location, char *token, size_t tokensize)
 106 {
 107         assert(tokensize >= MAXPATHLEN);
 108         if (realpath(location, token) == NULL)
 109                 return (syserr_to_dsvcerr(errno));
 110 
 111         return (DSVC_SUCCESS);
 112 }