source4/param/share.c

   1 /*
   2    Unix SMB/CIFS implementation.
   3
   4    Modular shares configuration system
   5
   6    Copyright (C) Simo Sorce     2006
   7
   8    This program is free software; you can redistribute it and/or modify
   9    it under the terms of the GNU General Public License as published by
  10    the Free Software Foundation; either version 3 of the License, or
  11    (at your option) any later version.
  12
  13    This program is distributed in the hope that it will be useful,
  14    but WITHOUT ANY WARRANTY; without even the implied warranty of
  15    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  16    GNU General Public License for more details.
  17
  18    You should have received a copy of the GNU General Public License
  19    along with this program.  If not, see <http://www.gnu.org/licenses/>.
  20 */
  21
  22 #include "includes.h"
  23 #include "param/share.h"
  24 #include "param/param.h"
  25
  26 const char *share_string_option(struct share_config *scfg, const char *opt_name, const char *defval)
  27 {
  28         return scfg->ctx->ops->string_option(scfg, opt_name, defval);
  29 }
  30
  31 int share_int_option(struct share_config *scfg, const char *opt_name, int defval)
  32 {
  33         return scfg->ctx->ops->int_option(scfg, opt_name, defval);
  34 }
  35
  36 bool share_bool_option(struct share_config *scfg, const char *opt_name, bool defval)
  37 {
  38         return scfg->ctx->ops->bool_option(scfg, opt_name, defval);
  39 }
  40
  41 const char **share_string_list_option(TALLOC_CTX *mem_ctx, struct share_config *scfg, const char *opt_name)
  42 {
  43         return scfg->ctx->ops->string_list_option(mem_ctx, scfg, opt_name);
  44 }
  45
  46 NTSTATUS share_list_all(TALLOC_CTX *mem_ctx, struct share_context *sctx, int *count, const char ***names)
  47 {
  48         return sctx->ops->list_all(mem_ctx, sctx, count, names);
  49 }
  50
  51 NTSTATUS share_get_config(TALLOC_CTX *mem_ctx, struct share_context *sctx, const char *name, struct share_config **scfg)
  52 {
  53         return sctx->ops->get_config(mem_ctx, sctx, name, scfg);
  54 }
  55
  56 NTSTATUS share_create(struct share_context *sctx, const char *name, struct share_info *info, int count)
  57 {
  58         if (sctx->ops->create) {
  59                 return sctx->ops->create(sctx, name, info, count);
  60         }
  61         return NT_STATUS_NOT_IMPLEMENTED;
  62 }
  63
  64 NTSTATUS share_set(struct share_context *sctx, const char *name, struct share_info *info, int count)
  65 {
  66         if (sctx->ops->set) {
  67                 return sctx->ops->set(sctx, name, info, count);
  68         }
  69         return NT_STATUS_NOT_IMPLEMENTED;
  70 }
  71
  72 NTSTATUS share_remove(struct share_context *sctx, const char *name)
  73 {
  74         if (sctx->ops->remove) {
  75                 return sctx->ops->remove(sctx, name);
  76         }
  77         return NT_STATUS_NOT_IMPLEMENTED;
  78 }
  79
  80 /* List of currently available share backends */
  81 static struct share_ops **backends = NULL;
  82
  83 static const struct share_ops *share_backend_by_name(const char *name)
  84 {
  85         int i;
  86
  87         for (i = 0; backends && backends[i]; i++) {
  88                 if (strcmp(backends[i]->name, name) == 0) {
  89                         return backends[i];
  90                 }
  91         }
  92
  93         return NULL;
  94 }
  95
  96 /*
  97   Register the share backend
  98 */
  99 NTSTATUS share_register(const struct share_ops *ops)
 100 {
 101         int i;
 102
 103         if (share_backend_by_name(ops->name) != NULL) {
 104                 DEBUG(0,("SHARE backend [%s] already registered\n", ops->name));
 105                 return NT_STATUS_OBJECT_NAME_COLLISION;
 106         }
 107
 108         i = 0;
 109         while (backends && backends[i]) {
 110                 i++;
 111         }
 112
 113         backends = realloc_p(backends, struct share_ops *, i + 2);
 114         if (!backends) {
 115                 smb_panic("out of memory in share_register");
 116         }
 117
 118         backends[i] = (struct share_ops *)smb_xmemdup(ops, sizeof(*ops));
 119         backends[i]->name = smb_xstrdup(ops->name);
 120
 121         backends[i + 1] = NULL;
 122
 123         DEBUG(3, ("SHARE backend [%s] registered.\n", ops->name));
 124
 125         return NT_STATUS_OK;
 126 }
 127
 128 NTSTATUS share_get_context_by_name(TALLOC_CTX *mem_ctx, const char *backend_name,
 129                                    struct tevent_context *event_ctx,
 130                                    struct loadparm_context *lp_ctx,
 131                                    struct share_context **ctx)
 132 {
 133         const struct share_ops *ops;
 134
 135         ops = share_backend_by_name(backend_name);
 136         if (!ops) {
 137                 DEBUG(0, ("share_init_connection: share backend [%s] not found!\n", backend_name));
 138                 return NT_STATUS_INTERNAL_ERROR;
 139         }
 140
 141         return ops->init(mem_ctx, ops, event_ctx, lp_ctx, ctx);
 142 }
 143
 144 /*
 145   initialise the SHARE subsystem
 146 */
 147 NTSTATUS share_init(void)
 148 {
 149 #define _MODULE_PROTO(init) extern NTSTATUS init(void);
 150         STATIC_share_MODULES_PROTO;
 151         init_module_fn static_init[] = { STATIC_share_MODULES };
 152
 153         run_init_functions(static_init);
 154
 155         return NT_STATUS_OK;
 156 }