src/server/plugins/postgresql/vfs.c

Wed, 10 Aug 2022 20:32:49 +0200

author
Olaf Wintermann <olaf.wintermann@gmail.com>
date
Wed, 10 Aug 2022 20:32:49 +0200
branch
webdav
changeset 368
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parent 366
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child 370
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permissions
-rw-r--r--

implement named dav repositories

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1 /*
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2 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS HEADER.
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3 *
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4 * Copyright 2022 Olaf Wintermann. All rights reserved.
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5 *
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6 * Redistribution and use in source and binary forms, with or without
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7 * modification, are permitted provided that the following conditions are met:
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8 *
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9 * 1. Redistributions of source code must retain the above copyright
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10 * notice, this list of conditions and the following disclaimer.
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11 *
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12 * 2. Redistributions in binary form must reproduce the above copyright
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13 * notice, this list of conditions and the following disclaimer in the
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14 * documentation and/or other materials provided with the distribution.
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15 *
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16 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
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17 * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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18 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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19 * ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE
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20 * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
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21 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
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22 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
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23 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
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24 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
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25 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
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26 * POSSIBILITY OF SUCH DAMAGE.
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27 */
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28
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29 #include "vfs.h"
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30 #include "config.h"
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31
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32 #include <inttypes.h>
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33
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34 #include "../../util/util.h"
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35
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36 static VFS pg_vfs_class = {
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37 pg_vfs_open,
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38 pg_vfs_stat,
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39 pg_vfs_fstat,
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40 pg_vfs_opendir,
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41 pg_vfs_fdopendir,
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42 pg_vfs_mkdir,
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43 pg_vfs_unlink,
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44 pg_vfs_rmdir
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45 };
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46
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47 static VFS_IO pg_vfs_io_class = {
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48 pg_vfs_io_read,
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49 pg_vfs_io_write,
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50 pg_vfs_io_pread,
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51 pg_vfs_io_pwrite,
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52 pg_vfs_io_seek,
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53 pg_vfs_io_close,
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54 NULL, // no pg aio implementation yet
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55 NULL,
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56 pg_vfs_io_getetag
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57 };
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58
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59 static VFS_DIRIO pg_vfs_dirio_class = {
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60 pg_vfs_dirio_readdir,
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61 pg_vfs_dirio_close
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62 };
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63
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64
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65 /*
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66 * SQL Queries
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67 */
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68
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69 // Resolves a path into resource_id and parent_id
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70 // params: $1: path string
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71 static const char *sql_resolve_path =
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72 "with recursive resolvepath as (\n\
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73 select\n\
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74 resource_id,\n\
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75 parent_id,\n\
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76 '' as fullpath,\n\
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77 resoid,\n\
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78 iscollection,\n\
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79 lastmodified,\n\
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80 creationdate,\n\
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81 contentlength,\n\
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82 etag,\n\
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83 regexp_split_to_array($1, '/') as pathelm,\n\
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84 1 as pathdepth\n\
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85 from Resource\n\
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86 where parent_id is null\n\
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87 union\n\
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88 select\n\
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89 r.resource_id,\n\
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90 r.parent_id,\n\
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91 p.fullpath || '/' || r.nodename,\n\
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92 r.resoid,\n\
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93 r.iscollection,\n\
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94 r.lastmodified,\n\
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95 r.creationdate,\n\
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96 r.contentlength,\n\
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97 r.etag,\n\
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98 p.pathelm,\n\
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99 p.pathdepth + 1\n\
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100 from Resource r\n\
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101 inner join resolvepath p on r.parent_id = p.resource_id\n\
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102 where p.pathelm[p.pathdepth+1] = r.nodename\n\
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103 )\n\
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104 select resource_id, parent_id, fullpath, resoid, iscollection, lastmodified, creationdate, contentlength, etag from resolvepath\n\
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105 where fullpath = $1 ;";
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106
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107 // Same as sql_resolve_path, but it returns the root collection
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108 // params: $1: path string (should be '/')
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109 static const char *sql_get_root = "select resource_id, parent_id, $1 as fullpath, resoid, true as iscollection, lastmodified, creationdate, contentlength, etag from Resource where parent_id is null;";
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110
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111 // Get all children of a specific collection
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112 // params: $1: parent resource_id
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113 static const char *sql_get_children = "select resource_id, nodename, iscollection, lastmodified, creationdate, contentlength, etag from Resource where parent_id = $1;";
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114
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115 // Get resource
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116 // params: $1: resource_id
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117 static const char *sql_get_resource = "select resource_id, nodename, iscollection, lastmodified, creationdate, contentlength, etag from Resource where resource_id = $1;";
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118
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119 // Create resource
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120 // params: $1: parent_id
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121 // $2: node name
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122 static const char *sql_create_resource =
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123 "insert into Resource (parent_id, nodename, iscollection, lastmodified, creationdate, contentlength, resoid) values\n\
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124 ($1, $2, false, now(), now(), 0, lo_creat(-1))\n\
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125 returning resource_id, resoid, lastmodified, creationdate;";
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126
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127 // Create collection
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128 // params: $1: parent_id
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129 // $2: node name
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130 static const char *sql_create_collection =
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131 "insert into Resource (parent_id, nodename, iscollection, lastmodified, creationdate, contentlength) values\n\
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132 ($1, $2, true, now(), now(), 0)\n\
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133 returning resource_id, lastmodified, creationdate;";
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134
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135 // Update resource metadata
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136 // params: $1: resource_id
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137 // $2: contentlength
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138 static const char *sql_update_resource = "update Resource set contentlength = $2, lastmodified = now(), etag = gen_random_uuid() where resource_id = $1;";
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139
294
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140 // Delete a resource
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141 // params: $1: resource_id
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142 static const char *sql_delete_res = "delete from Resource where parent_id is not null and resource_id = $1;";
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143
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144
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145 void* pg_vfs_init(ServerConfiguration *cfg, pool_handle_t *pool, WSConfigNode *config) {
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146 return pg_init_repo(pool, config);
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147 }
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148
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149 VFS* pg_vfs_create(Session *sn, Request *rq, pblock *pb, void *initData) {
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150 // resourcepool is required
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151 char *resource_pool = pblock_findval("resourcepool", pb);
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152 if(!resource_pool) {
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153 log_ereport(LOG_MISCONFIG, "pg_vfs_create: missing resourcepool parameter");
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154 return NULL;
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155 }
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156
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157 // get the resource first (most likely to fail due to misconfig)
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158 ResourceData *resdata = resourcepool_lookup(sn, rq, resource_pool, 0);
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159 if(!resdata) {
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160 log_ereport(LOG_MISCONFIG, "postgresql vfs: resource pool %s not found", resource_pool);
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161 return NULL;
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162 }
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163 // resdata will be freed automatically when the request is finished
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164
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165 return pg_vfs_create_from_resourcedata(sn, rq, resdata);
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166 }
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167
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168 VFS* pg_vfs_create_from_resourcedata(Session *sn, Request *rq, ResourceData *resdata) {
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169 // Create a new VFS object and a separate instance object
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170 // VFS contains fptrs that can be copied from pg_vfs_class
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171 // instance contains request specific data (PGconn)
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172 VFS *vfs = pool_malloc(sn->pool, sizeof(VFS));
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173 if(!vfs) {
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174 return NULL;
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175 }
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176
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177 PgVFS *vfs_priv = pool_malloc(sn->pool, sizeof(PgVFS));
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178 if(!vfs_priv) {
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179 pool_free(sn->pool, vfs);
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180 return NULL;
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181 }
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182 vfs_priv->connection = resdata->data;
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183 vfs_priv->pg_resource = resdata;
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184
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185 memcpy(vfs, &pg_vfs_class, sizeof(VFS));
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186 vfs->flags = 0;
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187 vfs->instance = vfs_priv;
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188
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189 return vfs;
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190 }
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191
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192
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193 int pg_resolve_path(
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194 PGconn *connection,
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195 const char *path,
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196 int64_t *parent_id,
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197 int64_t *resource_id,
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198 Oid *oid,
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199 const char **resource_name,
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200 WSBool *iscollection,
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201 struct stat *s,
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202 char *etag,
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203 int *res_errno)
281
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204 {
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205 // basic path validation
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206 if(!path) return 1;
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207 size_t pathlen = strlen(path);
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208 if(pathlen == 0) return 1;
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209 if(path[0] != '/') {
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210 return 1;
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211 }
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212
281
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213 char *pathf = NULL;
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214 if(pathlen > 1 && path[pathlen-1] == '/') {
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215 pathf = malloc(pathlen);
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216 memcpy(pathf, path, pathlen);
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217 pathf[pathlen-1] = 0; // remove trailing '/'
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218 path = pathf;
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219 }
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220
278
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221 // get last node of path
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222 *resource_name = util_resource_name(path);
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223
281
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224 const char *sql = pathlen == 1 ? sql_get_root : sql_resolve_path;
278
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225 PGresult *result = PQexecParams(
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226 connection,
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227 sql,
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228 1, // number of parameters
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229 NULL,
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230 &path, // parameter value
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231 NULL,
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232 NULL,
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233 0); // 0: result in text format
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234
281
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235 if(pathf) {
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236 free(pathf);
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237 }
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238
278
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239 if(!result) return 1;
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240
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241 int ret = 1;
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242 //int nfields = PQnfields(result);
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243 int nrows = PQntuples(result);
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244 if(nrows == 1) {
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245 char *resource_id_str = PQgetvalue(result, 0, 0);
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246 char *parent_id_str = PQgetvalue(result, 0, 1);
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247 char *iscol = PQgetvalue(result, 0, 4);
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248 char *lastmodified = PQgetvalue(result, 0, 5);
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249 char *creationdate = PQgetvalue(result, 0, 6);
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250 char *contentlength = PQgetvalue(result, 0, 7);
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251 char *res_etag = PQgetvalue(result, 0, 8);
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252 if(resource_id_str && parent_id_str) {
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253 if(util_strtoint(resource_id_str, resource_id)) {
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254 ret = 0; // success
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255 }
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256 // optionally get parent_id
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257 util_strtoint(parent_id_str, parent_id);
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258 }
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259
283
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260 if(oid) {
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261 char *resoid = PQgetvalue(result, 0, 3);
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262 int64_t roid;
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263 if(resoid && util_strtoint(resoid, &roid)) {
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264 *oid = roid;
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265 }
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266 }
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267
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268 if(iscollection && iscol) {
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269 *iscollection = iscol[0] == 't' ? TRUE : FALSE;
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270 }
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271
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272 if(s) {
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273 pg_set_stat(s, iscol, lastmodified, creationdate, contentlength);
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274 }
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275
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276 if(etag) {
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277 size_t etag_len = strlen(res_etag);
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278 if(etag_len < PG_ETAG_MAXLEN)
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279 memcpy(etag, res_etag, etag_len+1);
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280 }
305
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281 } else if(res_errno) {
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282 *res_errno = ENOENT;
278
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283 }
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284
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285 PQclear(result);
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286
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287 return ret;
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288 }
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289
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290
282
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291 void pg_set_stat(
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292 struct stat *s,
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293 const char *iscollection,
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294 const char *lastmodified,
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295 const char *creationdate,
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296 const char *contentlength)
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297 {
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298 memset(s, 0, sizeof(struct stat));
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299 if(iscollection) {
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300 WSBool iscol = iscollection[0] == 't' ? TRUE : FALSE;
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301 if(iscol) {
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302 s->st_mode |= 0x4000;
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303 }
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304 }
304
33911d44111d add basic parser for pg timestamps
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305 s->st_mtime = pg_convert_timestamp(lastmodified);
283
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306
282
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307 if(contentlength) {
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308 int64_t len;
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309 if(util_strtoint(contentlength, &len)) {
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310 s->st_size = len;
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311 }
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312 }
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313 }
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314
290
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315 static int pg_create_res(
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316 PgVFS *pg,
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317 const char *resparentid_str,
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318 const char *nodename,
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319 int64_t *new_resource_id,
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320 Oid *oid,
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321 const char **resource_name,
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322 struct stat *s)
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323 {
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324 const char* params[2] = { resparentid_str, nodename };
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325 PGresult *result = PQexecParams(
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326 pg->connection,
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327 sql_create_resource,
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328 2, // number of parameters
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329 NULL,
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330 params, // parameter value
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331 NULL,
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332 NULL,
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333 0); // 0: result in text format
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334
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335 if(!result) return 1;
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336
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337 int ret = 1;
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338 if(PQntuples(result) == 1) {
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339 // sql insert succesful
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340 ret = 0;
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341
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342 char *id_str = PQgetvalue(result, 0, 0);
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343 char *oid_str = PQgetvalue(result, 0, 1);
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344 char *lastmodified = PQgetvalue(result, 0, 2);
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345 char *creationdate = PQgetvalue(result, 0, 3);
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346
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347 if(new_resource_id) {
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348 if(!id_str || !util_strtoint(id_str, new_resource_id)) {
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349 ret = 1; // shouldn't happen
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350 log_ereport(LOG_FAILURE, "Postgresql VFS: sql_create_resource: Could not convert resource_id to int");
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351 }
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352 }
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353 if(oid) {
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354 int64_t i;
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355 if(!oid_str || !util_strtoint(oid_str, &i)) {
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356 ret = 1; // shouldn't happen
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357 log_ereport(LOG_FAILURE, "Postgresql VFS: sql_create_resource: Could not convert oid to int");
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358 } else {
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359 *oid = i;
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360 }
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361 }
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362 if(resource_name) {
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363 *resource_name = nodename;
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364 }
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365 if(s) {
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366 pg_set_stat(s, 0, lastmodified, creationdate, NULL);
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367 }
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368 }
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369
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370 PQclear(result);
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371
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372 return ret;
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373 }
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374
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375
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376 static int pg_create_col(
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377 PgVFS *pg,
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378 const char *resparentid_str,
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379 const char *nodename,
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380 int64_t *new_resource_id,
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381 const char **resource_name,
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382 struct stat *s)
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383 {
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384 const char* params[2] = { resparentid_str, nodename };
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385 PGresult *result = PQexecParams(
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386 pg->connection,
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387 sql_create_collection,
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388 2, // number of parameters
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389 NULL,
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diff changeset
390 params, // parameter value
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391 NULL,
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392 NULL,
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393 0); // 0: result in text format
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394
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395 if(!result) return 1;
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396
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397 int ret = 1;
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398 if(PQntuples(result) == 1) {
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399 // sql insert succesful
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400 ret = 0;
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401
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402 char *id_str = PQgetvalue(result, 0, 0);
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403 char *lastmodified = PQgetvalue(result, 0, 1);
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404 char *creationdate = PQgetvalue(result, 0, 2);
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405
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406 if(new_resource_id) {
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diff changeset
407 if(!id_str || !util_strtoint(id_str, new_resource_id)) {
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408 ret = 1; // shouldn't happen
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diff changeset
409 log_ereport(LOG_FAILURE, "Postgresql VFS: sql_create_collection: Could not convert resource_id to int");
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diff changeset
410 }
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411 }
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diff changeset
412 if(resource_name) {
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413 *resource_name = nodename;
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414 }
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415 if(s) {
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416 pg_set_stat(s, 0, lastmodified, creationdate, NULL);
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417 }
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418 }
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419
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420 PQclear(result);
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421
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422 return ret;
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423 }
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diff changeset
424
285
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425 int pg_create_file(
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426 VFSContext *ctx,
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427 PgVFS *pg,
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428 const char *path,
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429 int64_t *new_resource_id,
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430 int64_t *res_parent_id,
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431 Oid *oid,
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432 const char **resource_name,
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433 struct stat *s,
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434 WSBool collection)
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435 {
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436 char *parent_path = util_parent_path(path);
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437 if(!parent_path) return 1;
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438
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439 size_t pathlen = strlen(path);
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440 char *pathf = NULL;
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441 if(pathlen > 1 && path[pathlen-1] == '/') {
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442 pathf = malloc(pathlen);
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443 memcpy(pathf, path, pathlen);
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444 pathf[pathlen-1] = 0; // remove trailing '/'
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445 path = pathf;
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446 }
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447
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448 const char *nodename = util_resource_name(path);
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449
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450 // resolve the parent path
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451 // if the parent path can't be resolved, we are done
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452 const char *resname;
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453 int64_t resource_id, parent_id;
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454 resource_id = -1;
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455 parent_id = -1;
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456 WSBool iscollection;
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457 Oid unused_oid = 0;
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458
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459 int err = pg_resolve_path(pg->connection, parent_path, &parent_id, &resource_id, &unused_oid, &resname, &iscollection, NULL, NULL, &ctx->vfs_errno);
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460 FREE(parent_path);
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461 if(err) {
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462 ctx->vfs_errno = ENOENT;
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463 if(pathf) free(pathf);
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464 return 1;
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465 }
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466
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467 // parent path exists, check if it is a collection
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468 if(!iscollection) {
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469 if(pathf) free(pathf);
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470 return 1;
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471 }
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472
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473 // create new Resource
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474 char resid_str[32];
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475 snprintf(resid_str, 32, "%" PRId64, resource_id); // convert parent resource_id to string
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476
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477 int ret;
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478 if(collection) {
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479 ret = pg_create_col(pg, resid_str, nodename, new_resource_id, resource_name, s);
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480 } else {
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481 ret = pg_create_res(pg, resid_str, nodename, new_resource_id, oid, resource_name, s);
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482 }
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483
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484 if(pathf) free(pathf);
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485
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486 if(res_parent_id) {
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487 // resource_id is still the id of the parent from previous pg_resolve_path call
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488 *res_parent_id = resource_id;
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489 }
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490
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491 return ret;
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492 }
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493
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494 int pg_remove_res(
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495 VFSContext *ctx,
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496 PgVFS *pg,
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497 int64_t resource_id,
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498 Oid oid)
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499 {
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500 // create transaction savepoint
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501 PGresult *result = PQexec(pg->connection, "savepoint del_res;");
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502 ExecStatusType execStatus = PQresultStatus(result);
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503 PQclear(result);
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504 if(execStatus != PGRES_COMMAND_OK) {
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505 return 1;
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506 }
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507
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508 if(oid > 0) {
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509 if(lo_unlink(pg->connection, oid) != 1) {
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510 // restore savepoint
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511 result = PQexec(pg->connection, "rollback to savepoint del_res;");
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512 PQclear(result);
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513 return 1; // error
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514 }
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515 }
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516
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517 char resid_str[32];
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518 snprintf(resid_str, 32, "%" PRId64, resource_id);
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519
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520 const char* params[1] = { resid_str };
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521 result = PQexecParams(
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522 pg->connection,
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523 sql_delete_res,
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524 1, // number of parameters
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525 NULL,
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526 params, // parameter value
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527 NULL,
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528 NULL,
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529 0); // 0: result in text format
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530
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531 execStatus = PQresultStatus(result);
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532 PQclear(result);
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533 int ret = 0;
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534
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535 if(execStatus != PGRES_COMMAND_OK) {
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536 ret = 1;
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537 // restore savepoint
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538 result = PQexec(pg->connection, "rollback to savepoint del_res;");
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539 PQclear(result);
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540 } else {
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541 // we don't need the savepoint anymore
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542 result = PQexec(pg->connection, "release savepoint del_res;");
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543 PQclear(result);
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544 }
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545
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546 return ret;
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547 }
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548
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549 int pg_update_resource(PgVFS *pg, int64_t resource_id, int64_t contentlength) {
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550 char resid_str[32];
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551 char ctlen_str[32];
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552 snprintf(resid_str, 32, "%" PRId64, resource_id);
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553 snprintf(ctlen_str, 32, "%" PRId64, contentlength);
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554
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555 const char* params[2] = { resid_str, ctlen_str };
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556 PGresult *result = PQexecParams(
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557 pg->connection,
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558 sql_update_resource,
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559 2, // number of parameters
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560 NULL,
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561 params, // parameter value
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562 NULL,
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563 NULL,
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564 0); // 0: result in text format
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565
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566 int ret = PQresultStatus(result) == PGRES_COMMAND_OK ? 0 : 1;
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567 PQclear(result);
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568 return ret;
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569 }
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570
275
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571 /* -------------------------- VFS functions -------------------------- */
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572
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573 SYS_FILE pg_vfs_open(VFSContext *ctx, const char *path, int oflags) {
283
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574 VFS *vfs = ctx->vfs;
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575 PgVFS *pg = vfs->instance;
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576
278
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577 const char *resname;
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578 int64_t resource_id, parent_id;
279
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diff changeset
579 resource_id = -1;
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580 parent_id = -1;
278
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diff changeset
581 WSBool iscollection;
281
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582 struct stat s;
346
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583 char etag[PG_ETAG_MAXLEN];
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584 Oid oid = 0;
346
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585 if(pg_resolve_path(pg->connection, path, &parent_id, &resource_id, &oid, &resname, &iscollection, &s, etag, &ctx->vfs_errno)) {
285
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586 if((oflags & O_CREAT) == O_CREAT) {
290
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587 if(pg_create_file(ctx, pg, path, &resource_id, &parent_id, &oid, &resname, &s, FALSE)) {
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588 return NULL;
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589 }
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590 iscollection = 0;
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591 } else {
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592 return NULL;
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593 }
278
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594 }
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595
278
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596 VFSFile *file = pool_malloc(ctx->pool, sizeof(VFSFile));
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597 if(!file) {
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598 return NULL;
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599 }
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600 PgFile *pgfile = pool_malloc(ctx->pool, sizeof(PgFile));
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601 if(!pgfile) {
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602 pool_free(ctx->pool, file);
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603 return NULL;
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604 }
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605
283
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606 int fd = -1;
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607 if(!iscollection) {
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608 if (PQstatus(pg->connection) != CONNECTION_OK) {
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609 fd = -2;
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610 }
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611
289
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612 int lo_mode = INV_READ;
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613 if((oflags & O_RDWR) == O_RDWR) {
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614 lo_mode = INV_READ|INV_WRITE;
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615 } else if((oflags & O_WRONLY) == O_WRONLY) {
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616 lo_mode = INV_WRITE;
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617 }
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618 fd = lo_open(pg->connection, oid, lo_mode);
341
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619 int err = 0;
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620 if(fd < 0) {
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621 err = 1;
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622 } else if((oflags & O_TRUNC) == O_TRUNC) {
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623 if(lo_truncate(pg->connection, fd, 0)) {
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624 lo_close(pg->connection, fd);
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625 err = 1;
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626 }
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627 }
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628
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629 if(err) {
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630 pool_free(ctx->pool, file);
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631 pool_free(ctx->pool, pgfile);
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632 return NULL;
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633 }
283
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634 }
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635
278
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636 pgfile->iscollection = iscollection;
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637 pgfile->resource_id = resource_id;
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638 pgfile->parent_id = parent_id;
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639 pgfile->oid = oid;
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640 pgfile->fd = fd;
292
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641 pgfile->oflags = oflags;
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642 pgfile->s = s;
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643 memcpy(pgfile->etag, etag, PG_ETAG_MAXLEN);
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644
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645 file->ctx = ctx;
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646 file->io = iscollection ? &pg_vfs_io_class : &pg_vfs_io_class;
278
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647 file->fd = -1;
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648 file->data = pgfile;
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649
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650 return file;
275
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651 }
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parents:
diff changeset
652
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parents:
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653 int pg_vfs_stat(VFSContext *ctx, const char *path, struct stat *buf) {
305
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654 VFS *vfs = ctx->vfs;
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655 PgVFS *pg = vfs->instance;
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656
281
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657 int64_t parent_id, resource_id;
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658 const char *resname;
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659 WSBool iscollection;
346
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660 return pg_resolve_path(pg->connection, path, &parent_id, &resource_id, NULL, &resname, &iscollection, buf, NULL, &ctx->vfs_errno);
275
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661 }
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parents:
diff changeset
662
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663 int pg_vfs_fstat(VFSContext *ctx, SYS_FILE fd, struct stat *buf) {
281
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664 PgFile *pgfile = fd->data;
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665 memcpy(buf, &pgfile->s, sizeof(struct stat));
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666 return 0;
275
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667 }
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parents:
diff changeset
668
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669 VFS_DIR pg_vfs_opendir(VFSContext *ctx, const char *path) {
279
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670 VFSFile *file = pg_vfs_open(ctx, path, O_RDONLY);
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671 if(!file) return NULL;
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672 return pg_vfs_fdopendir(ctx, file);
275
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673 }
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parents:
diff changeset
674
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675 VFS_DIR pg_vfs_fdopendir(VFSContext *ctx, SYS_FILE fd) {
279
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676 PgFile *pg = fd->data;
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677 if(!pg->iscollection) {
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678 ctx->vfs_errno = ENOTDIR;
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679 return NULL;
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diff changeset
680 }
275
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681
279
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682 VFSDir *dir = pool_malloc(ctx->pool, sizeof(VFSDir));
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diff changeset
683 if(!dir) {
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684 fd->io->close(fd);
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685 ctx->vfs_errno = ENOMEM;
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686 return NULL;
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687 }
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688
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diff changeset
689 PgDir *pgdir = pool_malloc(ctx->pool, sizeof(PgDir));
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diff changeset
690 if(!pgdir) {
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diff changeset
691 fd->io->close(fd);
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diff changeset
692 pool_free(ctx->pool, dir);
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diff changeset
693 ctx->vfs_errno = ENOMEM;
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694 return NULL;
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diff changeset
695 }
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diff changeset
696 memset(pgdir, 0, sizeof(PgDir));
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diff changeset
697 pgdir->file = fd;
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698
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diff changeset
699 dir->ctx = ctx;
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700 dir->io = &pg_vfs_dirio_class;
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diff changeset
701 dir->data = pgdir;
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702 dir->fd = -1;
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703
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704 return dir;
275
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parents:
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705 }
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parents:
diff changeset
706
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parents:
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707 int pg_vfs_mkdir(VFSContext *ctx, const char *path) {
290
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diff changeset
708 VFS *vfs = ctx->vfs;
efc10acf539f implement pg vfs mkdir
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diff changeset
709 PgVFS *pg = vfs->instance;
efc10acf539f implement pg vfs mkdir
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diff changeset
710
efc10acf539f implement pg vfs mkdir
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parents: 289
diff changeset
711 const char *resname;
efc10acf539f implement pg vfs mkdir
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parents: 289
diff changeset
712 int64_t resource_id, parent_id;
efc10acf539f implement pg vfs mkdir
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parents: 289
diff changeset
713 resource_id = -1;
efc10acf539f implement pg vfs mkdir
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parents: 289
diff changeset
714 parent_id = -1;
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parents: 289
diff changeset
715 WSBool iscollection;
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diff changeset
716 struct stat s;
efc10acf539f implement pg vfs mkdir
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parents: 289
diff changeset
717 Oid oid = 0;
346
784b24381bed extend postgresql vfs to store an etag in the file
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parents: 345
diff changeset
718 if(!pg_resolve_path(pg->connection, path, &parent_id, &resource_id, &oid, &resname, &iscollection, &s, NULL, &ctx->vfs_errno)) {
290
efc10acf539f implement pg vfs mkdir
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parents: 289
diff changeset
719 ctx->vfs_errno = EEXIST;
efc10acf539f implement pg vfs mkdir
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parents: 289
diff changeset
720 return 1;
efc10acf539f implement pg vfs mkdir
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parents: 289
diff changeset
721 }
efc10acf539f implement pg vfs mkdir
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parents: 289
diff changeset
722
efc10acf539f implement pg vfs mkdir
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parents: 289
diff changeset
723 if(pg_create_file(ctx, pg, path, NULL, NULL, NULL, NULL, NULL, TRUE)) {
efc10acf539f implement pg vfs mkdir
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diff changeset
724 return 1;
efc10acf539f implement pg vfs mkdir
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parents: 289
diff changeset
725 }
efc10acf539f implement pg vfs mkdir
Olaf Wintermann <olaf.wintermann@gmail.com>
parents: 289
diff changeset
726
efc10acf539f implement pg vfs mkdir
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parents: 289
diff changeset
727 return 0;
275
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parents:
diff changeset
728 }
535004faa1a5 add empty postgresql VFS functions
Olaf Wintermann <olaf.wintermann@gmail.com>
parents:
diff changeset
729
535004faa1a5 add empty postgresql VFS functions
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parents:
diff changeset
730 int pg_vfs_unlink(VFSContext *ctx, const char *path) {
294
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diff changeset
731 VFS *vfs = ctx->vfs;
277a5896a2ec implement pg unlink
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parents: 292
diff changeset
732 PgVFS *pg = vfs->instance;
277a5896a2ec implement pg unlink
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parents: 292
diff changeset
733
277a5896a2ec implement pg unlink
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parents: 292
diff changeset
734 const char *resname;
277a5896a2ec implement pg unlink
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parents: 292
diff changeset
735 int64_t resource_id, parent_id;
277a5896a2ec implement pg unlink
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parents: 292
diff changeset
736 resource_id = -1;
277a5896a2ec implement pg unlink
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parents: 292
diff changeset
737 parent_id = -1;
277a5896a2ec implement pg unlink
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parents: 292
diff changeset
738 WSBool iscollection;
277a5896a2ec implement pg unlink
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parents: 292
diff changeset
739 Oid oid = 0;
346
784b24381bed extend postgresql vfs to store an etag in the file
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parents: 345
diff changeset
740 if(pg_resolve_path(pg->connection, path, &parent_id, &resource_id, &oid, &resname, &iscollection, NULL, NULL, &ctx->vfs_errno)) {
294
277a5896a2ec implement pg unlink
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parents: 292
diff changeset
741 return 1;
277a5896a2ec implement pg unlink
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parents: 292
diff changeset
742 }
277a5896a2ec implement pg unlink
Olaf Wintermann <olaf.wintermann@gmail.com>
parents: 292
diff changeset
743
277a5896a2ec implement pg unlink
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parents: 292
diff changeset
744 if(iscollection) {
277a5896a2ec implement pg unlink
Olaf Wintermann <olaf.wintermann@gmail.com>
parents: 292
diff changeset
745 ctx->vfs_errno = EISDIR;
277a5896a2ec implement pg unlink
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parents: 292
diff changeset
746 return 1;
277a5896a2ec implement pg unlink
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parents: 292
diff changeset
747 }
277a5896a2ec implement pg unlink
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parents: 292
diff changeset
748
296
78e92337fa4e implement pg rmdir
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diff changeset
749 return pg_remove_res(ctx, pg, resource_id, oid);
275
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parents:
diff changeset
750 }
535004faa1a5 add empty postgresql VFS functions
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parents:
diff changeset
751
295
73a1243fce15 add pg mkdir tests
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diff changeset
752 int pg_vfs_rmdir(VFSContext *ctx, const char *path) {
296
78e92337fa4e implement pg rmdir
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parents: 295
diff changeset
753 VFS *vfs = ctx->vfs;
78e92337fa4e implement pg rmdir
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parents: 295
diff changeset
754 PgVFS *pg = vfs->instance;
295
73a1243fce15 add pg mkdir tests
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parents: 294
diff changeset
755
296
78e92337fa4e implement pg rmdir
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diff changeset
756 const char *resname;
78e92337fa4e implement pg rmdir
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parents: 295
diff changeset
757 int64_t resource_id, parent_id;
78e92337fa4e implement pg rmdir
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parents: 295
diff changeset
758 resource_id = -1;
78e92337fa4e implement pg rmdir
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parents: 295
diff changeset
759 parent_id = -1;
78e92337fa4e implement pg rmdir
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parents: 295
diff changeset
760 WSBool iscollection;
346
784b24381bed extend postgresql vfs to store an etag in the file
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parents: 345
diff changeset
761 if(pg_resolve_path(pg->connection, path, &parent_id, &resource_id, NULL, &resname, &iscollection, NULL, NULL, &ctx->vfs_errno)) {
296
78e92337fa4e implement pg rmdir
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diff changeset
762 return 1;
78e92337fa4e implement pg rmdir
Olaf Wintermann <olaf.wintermann@gmail.com>
parents: 295
diff changeset
763 }
78e92337fa4e implement pg rmdir
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parents: 295
diff changeset
764
78e92337fa4e implement pg rmdir
Olaf Wintermann <olaf.wintermann@gmail.com>
parents: 295
diff changeset
765 if(!iscollection) {
78e92337fa4e implement pg rmdir
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parents: 295
diff changeset
766 ctx->vfs_errno = ENOTDIR;
78e92337fa4e implement pg rmdir
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parents: 295
diff changeset
767 return 1;
78e92337fa4e implement pg rmdir
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parents: 295
diff changeset
768 }
78e92337fa4e implement pg rmdir
Olaf Wintermann <olaf.wintermann@gmail.com>
parents: 295
diff changeset
769
78e92337fa4e implement pg rmdir
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parents: 295
diff changeset
770 return pg_remove_res(ctx, pg, resource_id, 0);
275
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parents:
diff changeset
771 }
535004faa1a5 add empty postgresql VFS functions
Olaf Wintermann <olaf.wintermann@gmail.com>
parents:
diff changeset
772
535004faa1a5 add empty postgresql VFS functions
Olaf Wintermann <olaf.wintermann@gmail.com>
parents:
diff changeset
773
535004faa1a5 add empty postgresql VFS functions
Olaf Wintermann <olaf.wintermann@gmail.com>
parents:
diff changeset
774 /* -------------------------- VFS_IO functions -------------------------- */
535004faa1a5 add empty postgresql VFS functions
Olaf Wintermann <olaf.wintermann@gmail.com>
parents:
diff changeset
775
535004faa1a5 add empty postgresql VFS functions
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parents:
diff changeset
776 ssize_t pg_vfs_io_read(SYS_FILE fd, void *buf, size_t nbyte) {
283
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diff changeset
777 PgVFS *pgvfs = fd->ctx->vfs->instance;
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parents: 282
diff changeset
778 PgFile *pg = fd->data;
25e5b771677d minimal working send_file with postgresql vfs
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parents: 282
diff changeset
779 return lo_read(pgvfs->connection, pg->fd, buf, nbyte);
275
535004faa1a5 add empty postgresql VFS functions
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parents:
diff changeset
780 }
535004faa1a5 add empty postgresql VFS functions
Olaf Wintermann <olaf.wintermann@gmail.com>
parents:
diff changeset
781
535004faa1a5 add empty postgresql VFS functions
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parents:
diff changeset
782 ssize_t pg_vfs_io_write(SYS_FILE fd, const void *buf, size_t nbyte) {
283
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diff changeset
783 PgVFS *pgvfs = fd->ctx->vfs->instance;
284
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diff changeset
784 PgFile *pg = fd->data;
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diff changeset
785 return lo_write(pgvfs->connection, pg->fd, buf, nbyte);
275
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parents:
diff changeset
786 }
535004faa1a5 add empty postgresql VFS functions
Olaf Wintermann <olaf.wintermann@gmail.com>
parents:
diff changeset
787
535004faa1a5 add empty postgresql VFS functions
Olaf Wintermann <olaf.wintermann@gmail.com>
parents:
diff changeset
788 ssize_t pg_vfs_io_pread(SYS_FILE fd, void *buf, size_t nbyte, off_t offset) {
283
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diff changeset
789 PgVFS *pgvfs = fd->ctx->vfs->instance;
284
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diff changeset
790 PgFile *pg = fd->data;
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parents: 283
diff changeset
791 if(lo_lseek64(pgvfs->connection, pg->fd, offset, SEEK_SET) == -1) {
eab579b8c80d add missing postgresql vfs io functions
Olaf Wintermann <olaf.wintermann@gmail.com>
parents: 283
diff changeset
792 return -1;
eab579b8c80d add missing postgresql vfs io functions
Olaf Wintermann <olaf.wintermann@gmail.com>
parents: 283
diff changeset
793 }
eab579b8c80d add missing postgresql vfs io functions
Olaf Wintermann <olaf.wintermann@gmail.com>
parents: 283
diff changeset
794 return lo_read(pgvfs->connection, pg->fd, buf, nbyte);
275
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parents:
diff changeset
795 }
535004faa1a5 add empty postgresql VFS functions
Olaf Wintermann <olaf.wintermann@gmail.com>
parents:
diff changeset
796
535004faa1a5 add empty postgresql VFS functions
Olaf Wintermann <olaf.wintermann@gmail.com>
parents:
diff changeset
797 ssize_t pg_vfs_io_pwrite(SYS_FILE fd, const void *buf, size_t nbyte, off_t offset) {
283
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diff changeset
798 PgVFS *pgvfs = fd->ctx->vfs->instance;
284
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diff changeset
799 PgFile *pg = fd->data;
eab579b8c80d add missing postgresql vfs io functions
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parents: 283
diff changeset
800 if(lo_lseek64(pgvfs->connection, pg->fd, offset, SEEK_SET) == -1) {
eab579b8c80d add missing postgresql vfs io functions
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parents: 283
diff changeset
801 return -1;
eab579b8c80d add missing postgresql vfs io functions
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parents: 283
diff changeset
802 }
eab579b8c80d add missing postgresql vfs io functions
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parents: 283
diff changeset
803 return lo_write(pgvfs->connection, pg->fd, buf, nbyte);
275
535004faa1a5 add empty postgresql VFS functions
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parents:
diff changeset
804 }
535004faa1a5 add empty postgresql VFS functions
Olaf Wintermann <olaf.wintermann@gmail.com>
parents:
diff changeset
805
535004faa1a5 add empty postgresql VFS functions
Olaf Wintermann <olaf.wintermann@gmail.com>
parents:
diff changeset
806 off_t pg_vfs_io_seek(SYS_FILE fd, off_t offset, int whence) {
283
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diff changeset
807 PgVFS *pgvfs = fd->ctx->vfs->instance;
284
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parents: 283
diff changeset
808 PgFile *pg = fd->data;
eab579b8c80d add missing postgresql vfs io functions
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parents: 283
diff changeset
809 return lo_lseek64(pgvfs->connection, pg->fd, offset, whence);
275
535004faa1a5 add empty postgresql VFS functions
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parents:
diff changeset
810 }
535004faa1a5 add empty postgresql VFS functions
Olaf Wintermann <olaf.wintermann@gmail.com>
parents:
diff changeset
811
291
0f46b645aea4 add pg_vfs_io_tell
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parents: 290
diff changeset
812 off_t pg_vfs_io_tell(SYS_FILE fd) {
0f46b645aea4 add pg_vfs_io_tell
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parents: 290
diff changeset
813 PgVFS *pgvfs = fd->ctx->vfs->instance;
0f46b645aea4 add pg_vfs_io_tell
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parents: 290
diff changeset
814 PgFile *pg = fd->data;
0f46b645aea4 add pg_vfs_io_tell
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parents: 290
diff changeset
815 return lo_tell64(pgvfs->connection, pg->fd);
0f46b645aea4 add pg_vfs_io_tell
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parents: 290
diff changeset
816 }
0f46b645aea4 add pg_vfs_io_tell
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parents: 290
diff changeset
817
275
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parents:
diff changeset
818 void pg_vfs_io_close(SYS_FILE fd) {
282
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parents: 281
diff changeset
819 pool_handle_t *pool = fd->ctx->pool;
292
7c31bcd5b4be update pg resource metadata on close
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parents: 291
diff changeset
820 PgVFS *pgvfs = fd->ctx->vfs->instance;
282
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diff changeset
821 PgFile *pg = fd->data;
275
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parents:
diff changeset
822
283
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diff changeset
823 if(pg->fd >= 0) {
292
7c31bcd5b4be update pg resource metadata on close
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parents: 291
diff changeset
824 if((pg->oflags & (O_WRONLY|O_RDWR)) > 0) {
7c31bcd5b4be update pg resource metadata on close
Olaf Wintermann <olaf.wintermann@gmail.com>
parents: 291
diff changeset
825 // file modified, update length and lastmodified
7c31bcd5b4be update pg resource metadata on close
Olaf Wintermann <olaf.wintermann@gmail.com>
parents: 291
diff changeset
826 off_t len = pg_vfs_io_seek(fd, 0, SEEK_END);
7c31bcd5b4be update pg resource metadata on close
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parents: 291
diff changeset
827 if(len < 0) len = 0;
7c31bcd5b4be update pg resource metadata on close
Olaf Wintermann <olaf.wintermann@gmail.com>
parents: 291
diff changeset
828
7c31bcd5b4be update pg resource metadata on close
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parents: 291
diff changeset
829 pg_update_resource(pgvfs, pg->resource_id, len);
7c31bcd5b4be update pg resource metadata on close
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parents: 291
diff changeset
830 }
7c31bcd5b4be update pg resource metadata on close
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parents: 291
diff changeset
831
283
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diff changeset
832 PgVFS *pgvfs = fd->ctx->vfs->instance;
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parents: 282
diff changeset
833 lo_close(pgvfs->connection, pg->fd);
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diff changeset
834 }
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parents: 282
diff changeset
835
282
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diff changeset
836 pool_free(pool, pg);
cfb588e27198 add support for getstat parameter in pg readdir
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parents: 281
diff changeset
837 pool_free(pool, fd);
275
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parents:
diff changeset
838 }
535004faa1a5 add empty postgresql VFS functions
Olaf Wintermann <olaf.wintermann@gmail.com>
parents:
diff changeset
839
345
5832e10fc59a add optional getetag function to VFS API
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parents: 344
diff changeset
840 const char *pg_vfs_io_getetag(SYS_FILE fd) {
346
784b24381bed extend postgresql vfs to store an etag in the file
Olaf Wintermann <olaf.wintermann@gmail.com>
parents: 345
diff changeset
841 PgFile *pg = fd->data;
784b24381bed extend postgresql vfs to store an etag in the file
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parents: 345
diff changeset
842 return pg->etag;
345
5832e10fc59a add optional getetag function to VFS API
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parents: 344
diff changeset
843 }
275
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parents:
diff changeset
844
535004faa1a5 add empty postgresql VFS functions
Olaf Wintermann <olaf.wintermann@gmail.com>
parents:
diff changeset
845 /* -------------------------- VFS_DIRIO functions -------------------------- */
535004faa1a5 add empty postgresql VFS functions
Olaf Wintermann <olaf.wintermann@gmail.com>
parents:
diff changeset
846
279
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parents: 278
diff changeset
847 static int load_dir(VFSDir *dir, PgDir *pg) {
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diff changeset
848 VFS *vfs = dir->ctx->vfs;
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diff changeset
849 PgVFS *pgvfs = vfs->instance;
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850 PgFile *pgfd = pg->file->data;
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diff changeset
851 PgDir *pgdir = dir->data;
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diff changeset
852
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diff changeset
853 char resid_param[32];
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diff changeset
854 snprintf(resid_param, 32, "%" PRId64, pgfd->resource_id);
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diff changeset
855
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diff changeset
856 const char *param = resid_param;
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diff changeset
857
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diff changeset
858 PGresult *result = PQexecParams(
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diff changeset
859 pgvfs->connection,
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diff changeset
860 sql_get_children,
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diff changeset
861 1, // number of parameters
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862 NULL,
281
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863 &param, // param: parent resource_id
279
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diff changeset
864 NULL,
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diff changeset
865 NULL,
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diff changeset
866 0); // 0: result in text format
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diff changeset
867 if(!result) return 1;
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diff changeset
868
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diff changeset
869 pgdir->result = result;
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diff changeset
870 pgdir->nrows = PQntuples(result);
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diff changeset
871 return 0;
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diff changeset
872 }
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diff changeset
873
275
535004faa1a5 add empty postgresql VFS functions
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874 int pg_vfs_dirio_readdir(VFS_DIR dir, VFS_ENTRY *entry, int getstat) {
279
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diff changeset
875 PgDir *pg = dir->data;
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diff changeset
876 if(!pg->result) {
79029fe26aae add basic postgresql vfs directory functions
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877 if(load_dir(dir, pg)) {
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diff changeset
878 return 0;
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diff changeset
879 }
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880 }
275
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diff changeset
881
279
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diff changeset
882 if(pg->row >= pg->nrows) {
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diff changeset
883 return 0; // EOF
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diff changeset
884 }
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diff changeset
885
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diff changeset
886 entry->name = PQgetvalue(pg->result, pg->row, 1);
353
382d6c221807 fix pg_vfs_dirio_readdir not initializing some VFS_ENTRY fields
Olaf Wintermann <olaf.wintermann@gmail.com>
parents: 350
diff changeset
887 entry->stat_errno = 0;
382d6c221807 fix pg_vfs_dirio_readdir not initializing some VFS_ENTRY fields
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diff changeset
888 entry->stat_extra = NULL;
279
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diff changeset
889
282
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diff changeset
890 if(getstat) {
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diff changeset
891 memset(&entry->stat, 0, sizeof(struct stat));
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diff changeset
892
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diff changeset
893 char *iscollection = PQgetvalue(pg->result, pg->row, 2);
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diff changeset
894 char *lastmodified = PQgetvalue(pg->result, pg->row, 3);
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diff changeset
895 char *creationdate = PQgetvalue(pg->result, pg->row, 4);
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896 char *contentlength = PQgetvalue(pg->result, pg->row, 5);
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diff changeset
897 pg_set_stat(&entry->stat, iscollection, lastmodified, creationdate, contentlength);
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diff changeset
898 }
279
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diff changeset
899
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diff changeset
900 pg->row++;
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901 return 1;
275
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diff changeset
902 }
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parents:
diff changeset
903
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parents:
diff changeset
904 void pg_vfs_dirio_close(VFS_DIR dir) {
280
d0d5a970292f implement pg_vfs_dirio_close
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parents: 279
diff changeset
905 pool_handle_t *pool = dir->ctx->pool;
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diff changeset
906 PgDir *pg = dir->data;
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diff changeset
907 if(pg->result) {
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diff changeset
908 PQclear(pg->result);
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diff changeset
909 }
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diff changeset
910 PgFile *pgfile = pg->file->data;
275
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diff changeset
911
280
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diff changeset
912 pool_free(pool, pgfile);
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diff changeset
913 pool_free(pool, pg->file);
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diff changeset
914 pool_free(pool, pg);
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diff changeset
915 pool_free(pool, dir);
275
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parents:
diff changeset
916 }
304
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diff changeset
917
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diff changeset
918 time_t pg_convert_timestamp(const char *timestamp) {
311
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diff changeset
919 struct tm tm;
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parents: 305
diff changeset
920 if(pg_convert_timestamp_tm(timestamp, &tm)) {
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diff changeset
921 return 0;
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diff changeset
922 }
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diff changeset
923 #ifdef __FreeBSD__
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diff changeset
924 return timelocal(&tm);
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diff changeset
925 #else
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parents: 305
diff changeset
926 return mktime(&tparts) - timezone;
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diff changeset
927 #endif
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parents: 305
diff changeset
928 }
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parents: 305
diff changeset
929
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diff changeset
930 int pg_convert_timestamp_tm(const char *timestamp, struct tm *tm) {
304
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diff changeset
931 // TODO: this is a very basic implementation that needs some work
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diff changeset
932 // format yyyy-mm-dd HH:MM:SS
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diff changeset
933
311
e676ed461b5b implement pg getlastmodified propfind (and prepare creationdate)
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diff changeset
934 memset(tm, 0, sizeof(struct tm));
304
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parents: 298
diff changeset
935 size_t len = timestamp ? strlen(timestamp) : 0;
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diff changeset
936 if(len < 19) {
311
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diff changeset
937 return 1;
304
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diff changeset
938 } else if(len > 63) {
311
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parents: 305
diff changeset
939 return 1;
304
33911d44111d add basic parser for pg timestamps
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diff changeset
940 }
33911d44111d add basic parser for pg timestamps
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parents: 298
diff changeset
941
33911d44111d add basic parser for pg timestamps
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diff changeset
942 char buf[64];
33911d44111d add basic parser for pg timestamps
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diff changeset
943 memcpy(buf, timestamp, len);
33911d44111d add basic parser for pg timestamps
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diff changeset
944
33911d44111d add basic parser for pg timestamps
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diff changeset
945 char *year_str = buf;
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diff changeset
946 year_str[4] = '\0';
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parents: 298
diff changeset
947
33911d44111d add basic parser for pg timestamps
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diff changeset
948 char *month_str = buf + 5;
33911d44111d add basic parser for pg timestamps
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parents: 298
diff changeset
949 month_str[2] = '\0';
33911d44111d add basic parser for pg timestamps
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parents: 298
diff changeset
950
33911d44111d add basic parser for pg timestamps
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diff changeset
951 char *day_str = buf + 8;
33911d44111d add basic parser for pg timestamps
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parents: 298
diff changeset
952 day_str[2] = '\0';
33911d44111d add basic parser for pg timestamps
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parents: 298
diff changeset
953
33911d44111d add basic parser for pg timestamps
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parents: 298
diff changeset
954 char *hour_str = buf + 11;
33911d44111d add basic parser for pg timestamps
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parents: 298
diff changeset
955 hour_str[2] = '\0';
33911d44111d add basic parser for pg timestamps
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parents: 298
diff changeset
956
33911d44111d add basic parser for pg timestamps
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parents: 298
diff changeset
957 char *minute_str = buf + 14;
33911d44111d add basic parser for pg timestamps
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parents: 298
diff changeset
958 minute_str[2] = '\0';
33911d44111d add basic parser for pg timestamps
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parents: 298
diff changeset
959
33911d44111d add basic parser for pg timestamps
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parents: 298
diff changeset
960 char *second_str = buf + 17;
33911d44111d add basic parser for pg timestamps
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parents: 298
diff changeset
961 second_str[2] = '\0';
33911d44111d add basic parser for pg timestamps
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diff changeset
962
311
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diff changeset
963 tm->tm_year = atoi(year_str) - 1900;
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parents: 305
diff changeset
964 tm->tm_mon = atoi(month_str) - 1;
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parents: 305
diff changeset
965 tm->tm_mday = atoi(day_str);
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parents: 305
diff changeset
966 tm->tm_hour = atoi(hour_str);
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parents: 305
diff changeset
967 tm->tm_min = atoi(minute_str);
e676ed461b5b implement pg getlastmodified propfind (and prepare creationdate)
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parents: 305
diff changeset
968 tm->tm_sec = atoi(second_str);
304
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parents: 298
diff changeset
969
311
e676ed461b5b implement pg getlastmodified propfind (and prepare creationdate)
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parents: 305
diff changeset
970 return 0;
304
33911d44111d add basic parser for pg timestamps
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parents: 298
diff changeset
971 }

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