libshare.c

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    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 (the "License").
    6  * You may not use this file except in compliance with the License.
    7  *
    8  * You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE
    9  * or https://opensource.org/licenses/CDDL-1.0.
   10  * See the License for the specific language governing permissions
   11  * and limitations under the License.
   12  *
   13  * When distributing Covered Code, include this CDDL HEADER in each
   14  * file and include the License file at usr/src/OPENSOLARIS.LICENSE.
   15  * If applicable, add the following below this CDDL HEADER, with the
   16  * fields enclosed by brackets "[]" replaced with your own identifying
   17  * information: Portions Copyright [yyyy] [name of copyright owner]
   18  *
   19  * CDDL HEADER END
   20  */
   21 
   22 /*
   23  * Copyright (c) 2002, 2010, Oracle and/or its affiliates. All rights reserved.
   24  * Copyright (c) 2011 Gunnar Beutner
   25  * Copyright (c) 2018, 2022 by Delphix. All rights reserved.
   26  */
   27 
   28 #include <stdio.h>
   29 #include <stdlib.h>
   30 #include <stddef.h>
   31 #include <string.h>
   32 #include <errno.h>
   33 #include <libintl.h>
   34 #include <sys/file.h>
   35 #include <sys/types.h>
   36 #include <sys/stat.h>
   37 #include <unistd.h>
   38 #include <libzfs.h>
   39 #include <libshare.h>
   40 #include "libshare_impl.h"
   41 
   42 #define init_share(zfsname, path, shareopts) \
   43         { \
   44                 .sa_zfsname = zfsname, \
   45                 .sa_mountpoint = path, \
   46                 .sa_shareopts = shareopts, \
   47         }
   48 
   49 #define VALIDATE_PROTOCOL(proto, ...) \
   50         if ((proto) < 0 || (proto) >= SA_PROTOCOL_COUNT) \
   51                 return __VA_ARGS__
   52 
   53 const char *const sa_protocol_names[SA_PROTOCOL_COUNT] = {
   54         [SA_PROTOCOL_NFS] = "nfs",
   55         [SA_PROTOCOL_SMB] = "smb",
   56 };
   57 
   58 static const sa_fstype_t *fstypes[SA_PROTOCOL_COUNT] =
   59         {&libshare_nfs_type, &libshare_smb_type};
   60 
   61 int
   62 sa_enable_share(const char *zfsname, const char *mountpoint,
   63     const char *shareopts, enum sa_protocol protocol)
   64 {
   65         VALIDATE_PROTOCOL(protocol, SA_INVALID_PROTOCOL);
   66 
   67         const struct sa_share_impl args =
   68             init_share(zfsname, mountpoint, shareopts);
   69         return (fstypes[protocol]->enable_share(&args));
   70 }
   71 
   72 int
   73 sa_disable_share(const char *mountpoint, enum sa_protocol protocol)
   74 {
   75         VALIDATE_PROTOCOL(protocol, SA_INVALID_PROTOCOL);
   76 
   77         const struct sa_share_impl args = init_share(NULL, mountpoint, NULL);
   78         return (fstypes[protocol]->disable_share(&args));
   79 }
   80 
   81 boolean_t
   82 sa_is_shared(const char *mountpoint, enum sa_protocol protocol)
   83 {
   84         VALIDATE_PROTOCOL(protocol, B_FALSE);
   85 
   86         const struct sa_share_impl args = init_share(NULL, mountpoint, NULL);
   87         return (fstypes[protocol]->is_shared(&args));
   88 }
   89 
   90 void
   91 sa_commit_shares(enum sa_protocol protocol)
   92 {
   93         /* CSTYLED */
   94         VALIDATE_PROTOCOL(protocol, );
   95 
   96         fstypes[protocol]->commit_shares();
   97 }
   98 
   99 void
  100 sa_truncate_shares(enum sa_protocol protocol)
  101 {
  102         /* CSTYLED */
  103         VALIDATE_PROTOCOL(protocol, );
  104 
  105         if (fstypes[protocol]->truncate_shares != NULL)
  106                 fstypes[protocol]->truncate_shares();
  107 }
  108 
  109 int
  110 sa_validate_shareopts(const char *options, enum sa_protocol protocol)
  111 {
  112         VALIDATE_PROTOCOL(protocol, SA_INVALID_PROTOCOL);
  113 
  114         return (fstypes[protocol]->validate_shareopts(options));
  115 }
  116 
  117 /*
  118  * sa_errorstr(err)
  119  *
  120  * convert an error value to an error string
  121  */
  122 const char *
  123 sa_errorstr(int err)
  124 {
  125         static char errstr[32];
  126 
  127         switch (err) {
  128         case SA_OK:
  129                 return (dgettext(TEXT_DOMAIN, "ok"));
  130         case SA_NO_SUCH_PATH:
  131                 return (dgettext(TEXT_DOMAIN, "path doesn't exist"));
  132         case SA_NO_MEMORY:
  133                 return (dgettext(TEXT_DOMAIN, "no memory"));
  134         case SA_DUPLICATE_NAME:
  135                 return (dgettext(TEXT_DOMAIN, "name in use"));
  136         case SA_BAD_PATH:
  137                 return (dgettext(TEXT_DOMAIN, "bad path"));
  138         case SA_NO_SUCH_GROUP:
  139                 return (dgettext(TEXT_DOMAIN, "no such group"));
  140         case SA_CONFIG_ERR:
  141                 return (dgettext(TEXT_DOMAIN, "configuration error"));
  142         case SA_SYSTEM_ERR:
  143                 return (dgettext(TEXT_DOMAIN, "system error"));
  144         case SA_SYNTAX_ERR:
  145                 return (dgettext(TEXT_DOMAIN, "syntax error"));
  146         case SA_NO_PERMISSION:
  147                 return (dgettext(TEXT_DOMAIN, "no permission"));
  148         case SA_BUSY:
  149                 return (dgettext(TEXT_DOMAIN, "busy"));
  150         case SA_NO_SUCH_PROP:
  151                 return (dgettext(TEXT_DOMAIN, "no such property"));
  152         case SA_INVALID_NAME:
  153                 return (dgettext(TEXT_DOMAIN, "invalid name"));
  154         case SA_INVALID_PROTOCOL:
  155                 return (dgettext(TEXT_DOMAIN, "invalid protocol"));
  156         case SA_NOT_ALLOWED:
  157                 return (dgettext(TEXT_DOMAIN, "operation not allowed"));
  158         case SA_BAD_VALUE:
  159                 return (dgettext(TEXT_DOMAIN, "bad property value"));
  160         case SA_INVALID_SECURITY:
  161                 return (dgettext(TEXT_DOMAIN, "invalid security type"));
  162         case SA_NO_SUCH_SECURITY:
  163                 return (dgettext(TEXT_DOMAIN, "security type not found"));
  164         case SA_VALUE_CONFLICT:
  165                 return (dgettext(TEXT_DOMAIN, "property value conflict"));
  166         case SA_NOT_IMPLEMENTED:
  167                 return (dgettext(TEXT_DOMAIN, "not implemented"));
  168         case SA_INVALID_PATH:
  169                 return (dgettext(TEXT_DOMAIN, "invalid path"));
  170         case SA_NOT_SUPPORTED:
  171                 return (dgettext(TEXT_DOMAIN, "operation not supported"));
  172         case SA_PROP_SHARE_ONLY:
  173                 return (dgettext(TEXT_DOMAIN, "property not valid for group"));
  174         case SA_NOT_SHARED:
  175                 return (dgettext(TEXT_DOMAIN, "not shared"));
  176         case SA_NO_SUCH_RESOURCE:
  177                 return (dgettext(TEXT_DOMAIN, "no such resource"));
  178         case SA_RESOURCE_REQUIRED:
  179                 return (dgettext(TEXT_DOMAIN, "resource name required"));
  180         case SA_MULTIPLE_ERROR:
  181                 return (dgettext(TEXT_DOMAIN,
  182                     "errors from multiple protocols"));
  183         case SA_PATH_IS_SUBDIR:
  184                 return (dgettext(TEXT_DOMAIN, "path is a subpath of share"));
  185         case SA_PATH_IS_PARENTDIR:
  186                 return (dgettext(TEXT_DOMAIN, "path is parent of a share"));
  187         case SA_NO_SECTION:
  188                 return (dgettext(TEXT_DOMAIN, "protocol requires a section"));
  189         case SA_NO_PROPERTIES:
  190                 return (dgettext(TEXT_DOMAIN, "properties not found"));
  191         case SA_NO_SUCH_SECTION:
  192                 return (dgettext(TEXT_DOMAIN, "section not found"));
  193         case SA_PASSWORD_ENC:
  194                 return (dgettext(TEXT_DOMAIN, "passwords must be encrypted"));
  195         case SA_SHARE_EXISTS:
  196                 return (dgettext(TEXT_DOMAIN,
  197                     "path or file is already shared"));
  198         default:
  199                 (void) snprintf(errstr, sizeof (errstr),
  200                     dgettext(TEXT_DOMAIN, "unknown %d"), err);
  201                 return (errstr);
  202         }
  203 }

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FreeBSD/Linux Kernel Cross Reference sys/contrib/openzfs/lib/libshare/libshare.c

FreeBSD/Linux Kernel Cross Reference
sys/contrib/openzfs/lib/libshare/libshare.c