src/server/plugins/postgresql/vfs.c

Sat, 13 Aug 2022 15:56:51 +0200

author
Olaf Wintermann <olaf.wintermann@gmail.com>
date
Sat, 13 Aug 2022 15:56:51 +0200
branch
webdav
changeset 373
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parent 372
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child 374
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permissions
-rw-r--r--

add parser for extended postgresql webdav config

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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
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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(cfg, 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 PgRepository *repo = initData;
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151
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152 char *resource_pool;
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153 if(repo) {
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154 resource_pool = repo->resourcepool.ptr;
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155 } else {
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156 // resourcepool is required
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157 resource_pool = pblock_findval("resourcepool", pb);
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158 if(!resource_pool) {
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159 log_ereport(LOG_MISCONFIG, "pg_vfs_create: missing resourcepool parameter");
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160 return NULL;
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161 }
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162 }
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163
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164 // get the resource first (most likely to fail due to misconfig)
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165 ResourceData *resdata = resourcepool_lookup(sn, rq, resource_pool, 0);
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166 if(!resdata) {
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167 log_ereport(LOG_MISCONFIG, "postgresql vfs: resource pool %s not found", resource_pool);
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168 return NULL;
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169 }
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170 // resdata will be freed automatically when the request is finished
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171
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172 return pg_vfs_create_from_resourcedata(sn, rq, resdata);
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173 }
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174
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175 VFS* pg_vfs_create_from_resourcedata(Session *sn, Request *rq, ResourceData *resdata) {
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176 // Create a new VFS object and a separate instance object
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177 // VFS contains fptrs that can be copied from pg_vfs_class
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178 // instance contains request specific data (PGconn)
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179 VFS *vfs = pool_malloc(sn->pool, sizeof(VFS));
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180 if(!vfs) {
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181 return NULL;
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182 }
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183
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184 PgVFS *vfs_priv = pool_malloc(sn->pool, sizeof(PgVFS));
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185 if(!vfs_priv) {
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186 pool_free(sn->pool, vfs);
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187 return NULL;
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188 }
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189 vfs_priv->connection = resdata->data;
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190 vfs_priv->pg_resource = resdata;
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191
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192 memcpy(vfs, &pg_vfs_class, sizeof(VFS));
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193 vfs->flags = 0;
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194 vfs->instance = vfs_priv;
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195
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196 return vfs;
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197 }
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198
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199
281
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200 int pg_resolve_path(
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201 PGconn *connection,
281
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202 const char *path,
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203 int64_t *parent_id,
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204 int64_t *resource_id,
283
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205 Oid *oid,
281
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206 const char **resource_name,
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207 WSBool *iscollection,
305
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208 struct stat *s,
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209 char *etag,
305
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210 int *res_errno)
281
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211 {
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212 // basic path validation
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213 if(!path) return 1;
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214 size_t pathlen = strlen(path);
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215 if(pathlen == 0) return 1;
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216 if(path[0] != '/') {
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217 return 1;
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218 }
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219
281
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220 char *pathf = NULL;
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221 if(pathlen > 1 && path[pathlen-1] == '/') {
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222 pathf = malloc(pathlen);
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223 memcpy(pathf, path, pathlen);
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224 pathf[pathlen-1] = 0; // remove trailing '/'
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225 path = pathf;
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226 }
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227
278
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228 // get last node of path
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229 *resource_name = util_resource_name(path);
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230
281
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231 const char *sql = pathlen == 1 ? sql_get_root : sql_resolve_path;
278
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232 PGresult *result = PQexecParams(
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233 connection,
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234 sql,
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235 1, // number of parameters
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236 NULL,
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237 &path, // parameter value
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238 NULL,
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239 NULL,
279
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240 0); // 0: result in text format
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241
281
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242 if(pathf) {
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243 free(pathf);
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244 }
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245
278
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246 if(!result) return 1;
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247
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248 int ret = 1;
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249 //int nfields = PQnfields(result);
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250 int nrows = PQntuples(result);
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251 if(nrows == 1) {
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252 char *resource_id_str = PQgetvalue(result, 0, 0);
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253 char *parent_id_str = PQgetvalue(result, 0, 1);
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254 char *iscol = PQgetvalue(result, 0, 4);
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255 char *lastmodified = PQgetvalue(result, 0, 5);
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256 char *creationdate = PQgetvalue(result, 0, 6);
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257 char *contentlength = PQgetvalue(result, 0, 7);
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258 char *res_etag = PQgetvalue(result, 0, 8);
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259 if(resource_id_str && parent_id_str) {
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260 if(util_strtoint(resource_id_str, resource_id)) {
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261 ret = 0; // success
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262 }
279
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263 // optionally get parent_id
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264 util_strtoint(parent_id_str, parent_id);
278
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265 }
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266
283
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267 if(oid) {
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268 char *resoid = PQgetvalue(result, 0, 3);
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269 int64_t roid;
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270 if(resoid && util_strtoint(resoid, &roid)) {
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271 *oid = roid;
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272 }
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273 }
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274
281
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275 if(iscollection && iscol) {
278
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276 *iscollection = iscol[0] == 't' ? TRUE : FALSE;
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277 }
281
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278
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279 if(s) {
282
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280 pg_set_stat(s, iscol, lastmodified, creationdate, contentlength);
281
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281 }
346
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282
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283 if(etag) {
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284 size_t etag_len = strlen(res_etag);
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285 if(etag_len < PG_ETAG_MAXLEN)
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286 memcpy(etag, res_etag, etag_len+1);
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287 }
305
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288 } else if(res_errno) {
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289 *res_errno = ENOENT;
278
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290 }
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291
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292 PQclear(result);
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293
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294 return ret;
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295 }
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296
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297
282
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298 void pg_set_stat(
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299 struct stat *s,
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300 const char *iscollection,
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301 const char *lastmodified,
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302 const char *creationdate,
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303 const char *contentlength)
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304 {
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305 memset(s, 0, sizeof(struct stat));
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306 if(iscollection) {
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307 WSBool iscol = iscollection[0] == 't' ? TRUE : FALSE;
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308 if(iscol) {
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309 s->st_mode |= 0x4000;
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310 }
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311 }
304
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312 s->st_mtime = pg_convert_timestamp(lastmodified);
283
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313
282
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314 if(contentlength) {
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315 int64_t len;
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316 if(util_strtoint(contentlength, &len)) {
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317 s->st_size = len;
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318 }
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319 }
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320 }
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321
290
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322 static int pg_create_res(
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323 PgVFS *pg,
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324 const char *resparentid_str,
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325 const char *nodename,
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326 int64_t *new_resource_id,
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327 Oid *oid,
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328 const char **resource_name,
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329 struct stat *s)
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330 {
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331 const char* params[2] = { resparentid_str, nodename };
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332 PGresult *result = PQexecParams(
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333 pg->connection,
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334 sql_create_resource,
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335 2, // number of parameters
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336 NULL,
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337 params, // parameter value
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338 NULL,
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339 NULL,
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340 0); // 0: result in text format
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341
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342 if(!result) return 1;
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343
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344 int ret = 1;
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345 if(PQntuples(result) == 1) {
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346 // sql insert succesful
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347 ret = 0;
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348
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349 char *id_str = PQgetvalue(result, 0, 0);
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350 char *oid_str = PQgetvalue(result, 0, 1);
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351 char *lastmodified = PQgetvalue(result, 0, 2);
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352 char *creationdate = PQgetvalue(result, 0, 3);
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353
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354 if(new_resource_id) {
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355 if(!id_str || !util_strtoint(id_str, new_resource_id)) {
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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 resource_id to int");
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358 }
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359 }
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360 if(oid) {
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361 int64_t i;
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362 if(!oid_str || !util_strtoint(oid_str, &i)) {
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363 ret = 1; // shouldn't happen
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364 log_ereport(LOG_FAILURE, "Postgresql VFS: sql_create_resource: Could not convert oid to int");
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365 } else {
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366 *oid = i;
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367 }
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368 }
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369 if(resource_name) {
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370 *resource_name = nodename;
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371 }
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372 if(s) {
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373 pg_set_stat(s, 0, lastmodified, creationdate, NULL);
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374 }
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375 }
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376
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377 PQclear(result);
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378
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379 return ret;
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380 }
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381
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382
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383 static int pg_create_col(
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384 PgVFS *pg,
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385 const char *resparentid_str,
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386 const char *nodename,
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387 int64_t *new_resource_id,
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388 const char **resource_name,
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389 struct stat *s)
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390 {
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391 const char* params[2] = { resparentid_str, nodename };
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392 PGresult *result = PQexecParams(
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393 pg->connection,
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394 sql_create_collection,
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395 2, // number of parameters
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396 NULL,
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diff changeset
397 params, // parameter value
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398 NULL,
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399 NULL,
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400 0); // 0: result in text format
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401
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402 if(!result) return 1;
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403
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404 int ret = 1;
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405 if(PQntuples(result) == 1) {
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406 // sql insert succesful
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407 ret = 0;
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408
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409 char *id_str = PQgetvalue(result, 0, 0);
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410 char *lastmodified = PQgetvalue(result, 0, 1);
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411 char *creationdate = PQgetvalue(result, 0, 2);
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412
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413 if(new_resource_id) {
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414 if(!id_str || !util_strtoint(id_str, new_resource_id)) {
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415 ret = 1; // shouldn't happen
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416 log_ereport(LOG_FAILURE, "Postgresql VFS: sql_create_collection: Could not convert resource_id to int");
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417 }
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418 }
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419 if(resource_name) {
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420 *resource_name = nodename;
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421 }
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422 if(s) {
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423 pg_set_stat(s, 0, lastmodified, creationdate, NULL);
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424 }
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425 }
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426
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427 PQclear(result);
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428
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429 return ret;
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430 }
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431
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432 int pg_create_file(
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433 VFSContext *ctx,
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434 PgVFS *pg,
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435 const char *path,
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436 int64_t *new_resource_id,
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437 int64_t *res_parent_id,
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438 Oid *oid,
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439 const char **resource_name,
290
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440 struct stat *s,
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441 WSBool collection)
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442 {
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443 char *parent_path = util_parent_path(path);
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444 if(!parent_path) return 1;
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445
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446 size_t pathlen = strlen(path);
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447 char *pathf = NULL;
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448 if(pathlen > 1 && path[pathlen-1] == '/') {
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449 pathf = malloc(pathlen);
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450 memcpy(pathf, path, pathlen);
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451 pathf[pathlen-1] = 0; // remove trailing '/'
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452 path = pathf;
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453 }
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454
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455 const char *nodename = util_resource_name(path);
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456
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457 // resolve the parent path
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458 // if the parent path can't be resolved, we are done
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459 const char *resname;
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460 int64_t resource_id, parent_id;
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461 resource_id = -1;
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462 parent_id = -1;
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463 WSBool iscollection;
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464 Oid unused_oid = 0;
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465
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466 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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467 FREE(parent_path);
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468 if(err) {
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469 ctx->vfs_errno = ENOENT;
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470 if(pathf) free(pathf);
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471 return 1;
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472 }
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473
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474 // parent path exists, check if it is a collection
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475 if(!iscollection) {
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476 if(pathf) free(pathf);
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477 return 1;
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478 }
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479
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480 // create new Resource
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481 char resid_str[32];
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482 snprintf(resid_str, 32, "%" PRId64, resource_id); // convert parent resource_id to string
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483
290
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484 int ret;
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485 if(collection) {
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486 ret = pg_create_col(pg, resid_str, nodename, new_resource_id, resource_name, s);
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487 } else {
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488 ret = pg_create_res(pg, resid_str, nodename, new_resource_id, oid, resource_name, s);
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489 }
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490
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491 if(pathf) free(pathf);
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492
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493 if(res_parent_id) {
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494 // resource_id is still the id of the parent from previous pg_resolve_path call
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495 *res_parent_id = resource_id;
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496 }
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497
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498 return ret;
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499 }
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500
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501 int pg_remove_res(
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502 VFSContext *ctx,
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503 PgVFS *pg,
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504 int64_t resource_id,
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505 Oid oid)
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506 {
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507 // create transaction savepoint
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508 PGresult *result = PQexec(pg->connection, "savepoint del_res;");
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509 ExecStatusType execStatus = PQresultStatus(result);
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510 PQclear(result);
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511 if(execStatus != PGRES_COMMAND_OK) {
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512 return 1;
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513 }
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514
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515 if(oid > 0) {
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516 if(lo_unlink(pg->connection, oid) != 1) {
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517 // restore savepoint
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518 result = PQexec(pg->connection, "rollback to savepoint del_res;");
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519 PQclear(result);
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520 return 1; // error
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521 }
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522 }
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523
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524 char resid_str[32];
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525 snprintf(resid_str, 32, "%" PRId64, resource_id);
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526
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527 const char* params[1] = { resid_str };
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528 result = PQexecParams(
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529 pg->connection,
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530 sql_delete_res,
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531 1, // number of parameters
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532 NULL,
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533 params, // parameter value
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534 NULL,
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535 NULL,
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536 0); // 0: result in text format
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537
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538 execStatus = PQresultStatus(result);
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539 PQclear(result);
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540 int ret = 0;
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541
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542 if(execStatus != PGRES_COMMAND_OK) {
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543 ret = 1;
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544 // restore savepoint
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545 result = PQexec(pg->connection, "rollback to savepoint del_res;");
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546 PQclear(result);
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547 } else {
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548 // we don't need the savepoint anymore
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549 result = PQexec(pg->connection, "release savepoint del_res;");
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550 PQclear(result);
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551 }
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552
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553 return ret;
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554 }
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555
292
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556 int pg_update_resource(PgVFS *pg, int64_t resource_id, int64_t contentlength) {
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557 char resid_str[32];
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558 char ctlen_str[32];
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559 snprintf(resid_str, 32, "%" PRId64, resource_id);
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560 snprintf(ctlen_str, 32, "%" PRId64, contentlength);
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561
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562 const char* params[2] = { resid_str, ctlen_str };
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563 PGresult *result = PQexecParams(
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564 pg->connection,
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565 sql_update_resource,
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566 2, // number of parameters
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567 NULL,
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568 params, // parameter value
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569 NULL,
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diff changeset
570 NULL,
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571 0); // 0: result in text format
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572
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573 int ret = PQresultStatus(result) == PGRES_COMMAND_OK ? 0 : 1;
297
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574 PQclear(result);
292
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575 return ret;
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576 }
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577
275
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578 /* -------------------------- VFS functions -------------------------- */
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579
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580 SYS_FILE pg_vfs_open(VFSContext *ctx, const char *path, int oflags) {
283
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581 VFS *vfs = ctx->vfs;
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582 PgVFS *pg = vfs->instance;
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583
278
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584 const char *resname;
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585 int64_t resource_id, parent_id;
279
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586 resource_id = -1;
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587 parent_id = -1;
278
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588 WSBool iscollection;
281
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589 struct stat s;
346
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590 char etag[PG_ETAG_MAXLEN];
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591 Oid oid = 0;
346
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592 if(pg_resolve_path(pg->connection, path, &parent_id, &resource_id, &oid, &resname, &iscollection, &s, etag, &ctx->vfs_errno)) {
285
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593 if((oflags & O_CREAT) == O_CREAT) {
290
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594 if(pg_create_file(ctx, pg, path, &resource_id, &parent_id, &oid, &resname, &s, FALSE)) {
285
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595 return NULL;
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596 }
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597 iscollection = 0;
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598 } else {
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599 return NULL;
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600 }
278
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601 }
275
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602
278
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diff changeset
603 VFSFile *file = pool_malloc(ctx->pool, sizeof(VFSFile));
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604 if(!file) {
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605 return NULL;
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606 }
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607 PgFile *pgfile = pool_malloc(ctx->pool, sizeof(PgFile));
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608 if(!pgfile) {
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609 pool_free(ctx->pool, file);
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610 return NULL;
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611 }
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612
283
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613 int fd = -1;
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614 if(!iscollection) {
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615 if (PQstatus(pg->connection) != CONNECTION_OK) {
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616 fd = -2;
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617 }
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618
289
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619 int lo_mode = INV_READ;
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620 if((oflags & O_RDWR) == O_RDWR) {
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621 lo_mode = INV_READ|INV_WRITE;
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622 } else if((oflags & O_WRONLY) == O_WRONLY) {
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623 lo_mode = INV_WRITE;
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624 }
283
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625 fd = lo_open(pg->connection, oid, lo_mode);
341
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626 int err = 0;
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627 if(fd < 0) {
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628 err = 1;
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629 } else if((oflags & O_TRUNC) == O_TRUNC) {
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630 if(lo_truncate(pg->connection, fd, 0)) {
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631 lo_close(pg->connection, fd);
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632 err = 1;
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633 }
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634 }
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635
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636 if(err) {
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diff changeset
637 pool_free(ctx->pool, file);
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638 pool_free(ctx->pool, pgfile);
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639 return NULL;
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640 }
283
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641 }
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642
278
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643 pgfile->iscollection = iscollection;
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644 pgfile->resource_id = resource_id;
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645 pgfile->parent_id = parent_id;
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646 pgfile->oid = oid;
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647 pgfile->fd = fd;
292
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648 pgfile->oflags = oflags;
281
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649 pgfile->s = s;
346
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650 memcpy(pgfile->etag, etag, PG_ETAG_MAXLEN);
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651
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652 file->ctx = ctx;
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653 file->io = iscollection ? &pg_vfs_io_class : &pg_vfs_io_class;
278
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654 file->fd = -1;
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655 file->data = pgfile;
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656
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657 return file;
275
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658 }
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parents:
diff changeset
659
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660 int pg_vfs_stat(VFSContext *ctx, const char *path, struct stat *buf) {
305
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661 VFS *vfs = ctx->vfs;
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662 PgVFS *pg = vfs->instance;
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663
281
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664 int64_t parent_id, resource_id;
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665 const char *resname;
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666 WSBool iscollection;
346
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667 return pg_resolve_path(pg->connection, path, &parent_id, &resource_id, NULL, &resname, &iscollection, buf, NULL, &ctx->vfs_errno);
275
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668 }
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parents:
diff changeset
669
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670 int pg_vfs_fstat(VFSContext *ctx, SYS_FILE fd, struct stat *buf) {
281
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671 PgFile *pgfile = fd->data;
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672 memcpy(buf, &pgfile->s, sizeof(struct stat));
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673 return 0;
275
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674 }
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parents:
diff changeset
675
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676 VFS_DIR pg_vfs_opendir(VFSContext *ctx, const char *path) {
279
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677 VFSFile *file = pg_vfs_open(ctx, path, O_RDONLY);
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678 if(!file) return NULL;
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679 return pg_vfs_fdopendir(ctx, file);
275
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680 }
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parents:
diff changeset
681
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682 VFS_DIR pg_vfs_fdopendir(VFSContext *ctx, SYS_FILE fd) {
279
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683 PgFile *pg = fd->data;
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684 if(!pg->iscollection) {
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685 ctx->vfs_errno = ENOTDIR;
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686 return NULL;
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687 }
275
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688
279
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689 VFSDir *dir = pool_malloc(ctx->pool, sizeof(VFSDir));
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diff changeset
690 if(!dir) {
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diff changeset
691 fd->io->close(fd);
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diff changeset
692 ctx->vfs_errno = ENOMEM;
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693 return NULL;
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diff changeset
694 }
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695
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diff changeset
696 PgDir *pgdir = pool_malloc(ctx->pool, sizeof(PgDir));
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diff changeset
697 if(!pgdir) {
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diff changeset
698 fd->io->close(fd);
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diff changeset
699 pool_free(ctx->pool, dir);
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diff changeset
700 ctx->vfs_errno = ENOMEM;
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diff changeset
701 return NULL;
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diff changeset
702 }
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diff changeset
703 memset(pgdir, 0, sizeof(PgDir));
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diff changeset
704 pgdir->file = fd;
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705
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diff changeset
706 dir->ctx = ctx;
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diff changeset
707 dir->io = &pg_vfs_dirio_class;
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diff changeset
708 dir->data = pgdir;
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parents: 278
diff changeset
709 dir->fd = -1;
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parents: 278
diff changeset
710
79029fe26aae add basic postgresql vfs directory functions
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parents: 278
diff changeset
711 return dir;
275
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parents:
diff changeset
712 }
535004faa1a5 add empty postgresql VFS functions
Olaf Wintermann <olaf.wintermann@gmail.com>
parents:
diff changeset
713
535004faa1a5 add empty postgresql VFS functions
Olaf Wintermann <olaf.wintermann@gmail.com>
parents:
diff changeset
714 int pg_vfs_mkdir(VFSContext *ctx, const char *path) {
290
efc10acf539f implement pg vfs mkdir
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parents: 289
diff changeset
715 VFS *vfs = ctx->vfs;
efc10acf539f implement pg vfs mkdir
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parents: 289
diff changeset
716 PgVFS *pg = vfs->instance;
efc10acf539f implement pg vfs mkdir
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parents: 289
diff changeset
717
efc10acf539f implement pg vfs mkdir
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parents: 289
diff changeset
718 const char *resname;
efc10acf539f implement pg vfs mkdir
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parents: 289
diff changeset
719 int64_t resource_id, parent_id;
efc10acf539f implement pg vfs mkdir
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parents: 289
diff changeset
720 resource_id = -1;
efc10acf539f implement pg vfs mkdir
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parents: 289
diff changeset
721 parent_id = -1;
efc10acf539f implement pg vfs mkdir
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parents: 289
diff changeset
722 WSBool iscollection;
efc10acf539f implement pg vfs mkdir
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parents: 289
diff changeset
723 struct stat s;
efc10acf539f implement pg vfs mkdir
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parents: 289
diff changeset
724 Oid oid = 0;
346
784b24381bed extend postgresql vfs to store an etag in the file
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parents: 345
diff changeset
725 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
726 ctx->vfs_errno = EEXIST;
efc10acf539f implement pg vfs mkdir
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parents: 289
diff changeset
727 return 1;
efc10acf539f implement pg vfs mkdir
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parents: 289
diff changeset
728 }
efc10acf539f implement pg vfs mkdir
Olaf Wintermann <olaf.wintermann@gmail.com>
parents: 289
diff changeset
729
efc10acf539f implement pg vfs mkdir
Olaf Wintermann <olaf.wintermann@gmail.com>
parents: 289
diff changeset
730 if(pg_create_file(ctx, pg, path, NULL, NULL, NULL, NULL, NULL, TRUE)) {
efc10acf539f implement pg vfs mkdir
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parents: 289
diff changeset
731 return 1;
efc10acf539f implement pg vfs mkdir
Olaf Wintermann <olaf.wintermann@gmail.com>
parents: 289
diff changeset
732 }
efc10acf539f implement pg vfs mkdir
Olaf Wintermann <olaf.wintermann@gmail.com>
parents: 289
diff changeset
733
efc10acf539f implement pg vfs mkdir
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parents: 289
diff changeset
734 return 0;
275
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parents:
diff changeset
735 }
535004faa1a5 add empty postgresql VFS functions
Olaf Wintermann <olaf.wintermann@gmail.com>
parents:
diff changeset
736
535004faa1a5 add empty postgresql VFS functions
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parents:
diff changeset
737 int pg_vfs_unlink(VFSContext *ctx, const char *path) {
294
277a5896a2ec implement pg unlink
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parents: 292
diff changeset
738 VFS *vfs = ctx->vfs;
277a5896a2ec implement pg unlink
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parents: 292
diff changeset
739 PgVFS *pg = vfs->instance;
277a5896a2ec implement pg unlink
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parents: 292
diff changeset
740
277a5896a2ec implement pg unlink
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parents: 292
diff changeset
741 const char *resname;
277a5896a2ec implement pg unlink
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parents: 292
diff changeset
742 int64_t resource_id, parent_id;
277a5896a2ec implement pg unlink
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parents: 292
diff changeset
743 resource_id = -1;
277a5896a2ec implement pg unlink
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parents: 292
diff changeset
744 parent_id = -1;
277a5896a2ec implement pg unlink
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parents: 292
diff changeset
745 WSBool iscollection;
277a5896a2ec implement pg unlink
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parents: 292
diff changeset
746 Oid oid = 0;
346
784b24381bed extend postgresql vfs to store an etag in the file
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parents: 345
diff changeset
747 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
748 return 1;
277a5896a2ec implement pg unlink
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parents: 292
diff changeset
749 }
277a5896a2ec implement pg unlink
Olaf Wintermann <olaf.wintermann@gmail.com>
parents: 292
diff changeset
750
277a5896a2ec implement pg unlink
Olaf Wintermann <olaf.wintermann@gmail.com>
parents: 292
diff changeset
751 if(iscollection) {
277a5896a2ec implement pg unlink
Olaf Wintermann <olaf.wintermann@gmail.com>
parents: 292
diff changeset
752 ctx->vfs_errno = EISDIR;
277a5896a2ec implement pg unlink
Olaf Wintermann <olaf.wintermann@gmail.com>
parents: 292
diff changeset
753 return 1;
277a5896a2ec implement pg unlink
Olaf Wintermann <olaf.wintermann@gmail.com>
parents: 292
diff changeset
754 }
277a5896a2ec implement pg unlink
Olaf Wintermann <olaf.wintermann@gmail.com>
parents: 292
diff changeset
755
296
78e92337fa4e implement pg rmdir
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parents: 295
diff changeset
756 return pg_remove_res(ctx, pg, resource_id, oid);
275
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parents:
diff changeset
757 }
535004faa1a5 add empty postgresql VFS functions
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parents:
diff changeset
758
295
73a1243fce15 add pg mkdir tests
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parents: 294
diff changeset
759 int pg_vfs_rmdir(VFSContext *ctx, const char *path) {
296
78e92337fa4e implement pg rmdir
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parents: 295
diff changeset
760 VFS *vfs = ctx->vfs;
78e92337fa4e implement pg rmdir
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parents: 295
diff changeset
761 PgVFS *pg = vfs->instance;
295
73a1243fce15 add pg mkdir tests
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parents: 294
diff changeset
762
296
78e92337fa4e implement pg rmdir
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parents: 295
diff changeset
763 const char *resname;
78e92337fa4e implement pg rmdir
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parents: 295
diff changeset
764 int64_t resource_id, parent_id;
78e92337fa4e implement pg rmdir
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parents: 295
diff changeset
765 resource_id = -1;
78e92337fa4e implement pg rmdir
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parents: 295
diff changeset
766 parent_id = -1;
78e92337fa4e implement pg rmdir
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parents: 295
diff changeset
767 WSBool iscollection;
346
784b24381bed extend postgresql vfs to store an etag in the file
Olaf Wintermann <olaf.wintermann@gmail.com>
parents: 345
diff changeset
768 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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parents: 295
diff changeset
769 return 1;
78e92337fa4e implement pg rmdir
Olaf Wintermann <olaf.wintermann@gmail.com>
parents: 295
diff changeset
770 }
78e92337fa4e implement pg rmdir
Olaf Wintermann <olaf.wintermann@gmail.com>
parents: 295
diff changeset
771
78e92337fa4e implement pg rmdir
Olaf Wintermann <olaf.wintermann@gmail.com>
parents: 295
diff changeset
772 if(!iscollection) {
78e92337fa4e implement pg rmdir
Olaf Wintermann <olaf.wintermann@gmail.com>
parents: 295
diff changeset
773 ctx->vfs_errno = ENOTDIR;
78e92337fa4e implement pg rmdir
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parents: 295
diff changeset
774 return 1;
78e92337fa4e implement pg rmdir
Olaf Wintermann <olaf.wintermann@gmail.com>
parents: 295
diff changeset
775 }
78e92337fa4e implement pg rmdir
Olaf Wintermann <olaf.wintermann@gmail.com>
parents: 295
diff changeset
776
78e92337fa4e implement pg rmdir
Olaf Wintermann <olaf.wintermann@gmail.com>
parents: 295
diff changeset
777 return pg_remove_res(ctx, pg, resource_id, 0);
275
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parents:
diff changeset
778 }
535004faa1a5 add empty postgresql VFS functions
Olaf Wintermann <olaf.wintermann@gmail.com>
parents:
diff changeset
779
535004faa1a5 add empty postgresql VFS functions
Olaf Wintermann <olaf.wintermann@gmail.com>
parents:
diff changeset
780
535004faa1a5 add empty postgresql VFS functions
Olaf Wintermann <olaf.wintermann@gmail.com>
parents:
diff changeset
781 /* -------------------------- VFS_IO functions -------------------------- */
535004faa1a5 add empty postgresql VFS functions
Olaf Wintermann <olaf.wintermann@gmail.com>
parents:
diff changeset
782
535004faa1a5 add empty postgresql VFS functions
Olaf Wintermann <olaf.wintermann@gmail.com>
parents:
diff changeset
783 ssize_t pg_vfs_io_read(SYS_FILE fd, void *buf, size_t nbyte) {
283
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parents: 282
diff changeset
784 PgVFS *pgvfs = fd->ctx->vfs->instance;
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parents: 282
diff changeset
785 PgFile *pg = fd->data;
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parents: 282
diff changeset
786 return lo_read(pgvfs->connection, pg->fd, buf, nbyte);
275
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parents:
diff changeset
787 }
535004faa1a5 add empty postgresql VFS functions
Olaf Wintermann <olaf.wintermann@gmail.com>
parents:
diff changeset
788
535004faa1a5 add empty postgresql VFS functions
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parents:
diff changeset
789 ssize_t pg_vfs_io_write(SYS_FILE fd, const void *buf, size_t nbyte) {
283
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diff changeset
790 PgVFS *pgvfs = fd->ctx->vfs->instance;
284
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diff changeset
791 PgFile *pg = fd->data;
eab579b8c80d add missing postgresql vfs io functions
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diff changeset
792 return lo_write(pgvfs->connection, pg->fd, buf, nbyte);
275
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parents:
diff changeset
793 }
535004faa1a5 add empty postgresql VFS functions
Olaf Wintermann <olaf.wintermann@gmail.com>
parents:
diff changeset
794
535004faa1a5 add empty postgresql VFS functions
Olaf Wintermann <olaf.wintermann@gmail.com>
parents:
diff changeset
795 ssize_t pg_vfs_io_pread(SYS_FILE fd, void *buf, size_t nbyte, off_t offset) {
283
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parents: 282
diff changeset
796 PgVFS *pgvfs = fd->ctx->vfs->instance;
284
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parents: 283
diff changeset
797 PgFile *pg = fd->data;
eab579b8c80d add missing postgresql vfs io functions
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parents: 283
diff changeset
798 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
799 return -1;
eab579b8c80d add missing postgresql vfs io functions
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parents: 283
diff changeset
800 }
eab579b8c80d add missing postgresql vfs io functions
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parents: 283
diff changeset
801 return lo_read(pgvfs->connection, pg->fd, buf, nbyte);
275
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parents:
diff changeset
802 }
535004faa1a5 add empty postgresql VFS functions
Olaf Wintermann <olaf.wintermann@gmail.com>
parents:
diff changeset
803
535004faa1a5 add empty postgresql VFS functions
Olaf Wintermann <olaf.wintermann@gmail.com>
parents:
diff changeset
804 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
805 PgVFS *pgvfs = fd->ctx->vfs->instance;
284
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parents: 283
diff changeset
806 PgFile *pg = fd->data;
eab579b8c80d add missing postgresql vfs io functions
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parents: 283
diff changeset
807 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
808 return -1;
eab579b8c80d add missing postgresql vfs io functions
Olaf Wintermann <olaf.wintermann@gmail.com>
parents: 283
diff changeset
809 }
eab579b8c80d add missing postgresql vfs io functions
Olaf Wintermann <olaf.wintermann@gmail.com>
parents: 283
diff changeset
810 return lo_write(pgvfs->connection, pg->fd, buf, nbyte);
275
535004faa1a5 add empty postgresql VFS functions
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parents:
diff changeset
811 }
535004faa1a5 add empty postgresql VFS functions
Olaf Wintermann <olaf.wintermann@gmail.com>
parents:
diff changeset
812
535004faa1a5 add empty postgresql VFS functions
Olaf Wintermann <olaf.wintermann@gmail.com>
parents:
diff changeset
813 off_t pg_vfs_io_seek(SYS_FILE fd, off_t offset, int whence) {
283
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diff changeset
814 PgVFS *pgvfs = fd->ctx->vfs->instance;
284
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parents: 283
diff changeset
815 PgFile *pg = fd->data;
eab579b8c80d add missing postgresql vfs io functions
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parents: 283
diff changeset
816 return lo_lseek64(pgvfs->connection, pg->fd, offset, whence);
275
535004faa1a5 add empty postgresql VFS functions
Olaf Wintermann <olaf.wintermann@gmail.com>
parents:
diff changeset
817 }
535004faa1a5 add empty postgresql VFS functions
Olaf Wintermann <olaf.wintermann@gmail.com>
parents:
diff changeset
818
291
0f46b645aea4 add pg_vfs_io_tell
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parents: 290
diff changeset
819 off_t pg_vfs_io_tell(SYS_FILE fd) {
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parents: 290
diff changeset
820 PgVFS *pgvfs = fd->ctx->vfs->instance;
0f46b645aea4 add pg_vfs_io_tell
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parents: 290
diff changeset
821 PgFile *pg = fd->data;
0f46b645aea4 add pg_vfs_io_tell
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parents: 290
diff changeset
822 return lo_tell64(pgvfs->connection, pg->fd);
0f46b645aea4 add pg_vfs_io_tell
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parents: 290
diff changeset
823 }
0f46b645aea4 add pg_vfs_io_tell
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parents: 290
diff changeset
824
275
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parents:
diff changeset
825 void pg_vfs_io_close(SYS_FILE fd) {
282
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parents: 281
diff changeset
826 pool_handle_t *pool = fd->ctx->pool;
292
7c31bcd5b4be update pg resource metadata on close
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parents: 291
diff changeset
827 PgVFS *pgvfs = fd->ctx->vfs->instance;
282
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parents: 281
diff changeset
828 PgFile *pg = fd->data;
275
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parents:
diff changeset
829
283
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diff changeset
830 if(pg->fd >= 0) {
292
7c31bcd5b4be update pg resource metadata on close
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parents: 291
diff changeset
831 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
832 // file modified, update length and lastmodified
7c31bcd5b4be update pg resource metadata on close
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parents: 291
diff changeset
833 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
834 if(len < 0) len = 0;
7c31bcd5b4be update pg resource metadata on close
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parents: 291
diff changeset
835
7c31bcd5b4be update pg resource metadata on close
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parents: 291
diff changeset
836 pg_update_resource(pgvfs, pg->resource_id, len);
7c31bcd5b4be update pg resource metadata on close
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parents: 291
diff changeset
837 }
7c31bcd5b4be update pg resource metadata on close
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parents: 291
diff changeset
838
283
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parents: 282
diff changeset
839 PgVFS *pgvfs = fd->ctx->vfs->instance;
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parents: 282
diff changeset
840 lo_close(pgvfs->connection, pg->fd);
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parents: 282
diff changeset
841 }
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parents: 282
diff changeset
842
282
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parents: 281
diff changeset
843 pool_free(pool, pg);
cfb588e27198 add support for getstat parameter in pg readdir
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parents: 281
diff changeset
844 pool_free(pool, fd);
275
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parents:
diff changeset
845 }
535004faa1a5 add empty postgresql VFS functions
Olaf Wintermann <olaf.wintermann@gmail.com>
parents:
diff changeset
846
345
5832e10fc59a add optional getetag function to VFS API
Olaf Wintermann <olaf.wintermann@gmail.com>
parents: 344
diff changeset
847 const char *pg_vfs_io_getetag(SYS_FILE fd) {
346
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diff changeset
848 PgFile *pg = fd->data;
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849 return pg->etag;
345
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diff changeset
850 }
275
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851
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parents:
diff changeset
852 /* -------------------------- VFS_DIRIO functions -------------------------- */
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853
279
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854 static int load_dir(VFSDir *dir, PgDir *pg) {
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855 VFS *vfs = dir->ctx->vfs;
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856 PgVFS *pgvfs = vfs->instance;
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857 PgFile *pgfd = pg->file->data;
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858 PgDir *pgdir = dir->data;
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859
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diff changeset
860 char resid_param[32];
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861 snprintf(resid_param, 32, "%" PRId64, pgfd->resource_id);
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862
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diff changeset
863 const char *param = resid_param;
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864
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diff changeset
865 PGresult *result = PQexecParams(
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diff changeset
866 pgvfs->connection,
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diff changeset
867 sql_get_children,
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diff changeset
868 1, // number of parameters
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869 NULL,
281
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870 &param, // param: parent resource_id
279
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871 NULL,
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diff changeset
872 NULL,
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diff changeset
873 0); // 0: result in text format
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874 if(!result) return 1;
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875
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diff changeset
876 pgdir->result = result;
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diff changeset
877 pgdir->nrows = PQntuples(result);
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diff changeset
878 return 0;
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diff changeset
879 }
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diff changeset
880
275
535004faa1a5 add empty postgresql VFS functions
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881 int pg_vfs_dirio_readdir(VFS_DIR dir, VFS_ENTRY *entry, int getstat) {
279
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882 PgDir *pg = dir->data;
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883 if(!pg->result) {
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884 if(load_dir(dir, pg)) {
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885 return 0;
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886 }
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diff changeset
887 }
275
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diff changeset
888
279
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889 if(pg->row >= pg->nrows) {
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diff changeset
890 return 0; // EOF
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diff changeset
891 }
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diff changeset
892
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diff changeset
893 entry->name = PQgetvalue(pg->result, pg->row, 1);
353
382d6c221807 fix pg_vfs_dirio_readdir not initializing some VFS_ENTRY fields
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diff changeset
894 entry->stat_errno = 0;
382d6c221807 fix pg_vfs_dirio_readdir not initializing some VFS_ENTRY fields
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diff changeset
895 entry->stat_extra = NULL;
279
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diff changeset
896
282
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diff changeset
897 if(getstat) {
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diff changeset
898 memset(&entry->stat, 0, sizeof(struct stat));
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diff changeset
899
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diff changeset
900 char *iscollection = PQgetvalue(pg->result, pg->row, 2);
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diff changeset
901 char *lastmodified = PQgetvalue(pg->result, pg->row, 3);
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diff changeset
902 char *creationdate = PQgetvalue(pg->result, pg->row, 4);
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diff changeset
903 char *contentlength = PQgetvalue(pg->result, pg->row, 5);
cfb588e27198 add support for getstat parameter in pg readdir
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diff changeset
904 pg_set_stat(&entry->stat, iscollection, lastmodified, creationdate, contentlength);
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diff changeset
905 }
279
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diff changeset
906
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diff changeset
907 pg->row++;
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908 return 1;
275
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909 }
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parents:
diff changeset
910
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parents:
diff changeset
911 void pg_vfs_dirio_close(VFS_DIR dir) {
280
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diff changeset
912 pool_handle_t *pool = dir->ctx->pool;
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diff changeset
913 PgDir *pg = dir->data;
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diff changeset
914 if(pg->result) {
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diff changeset
915 PQclear(pg->result);
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diff changeset
916 }
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diff changeset
917 PgFile *pgfile = pg->file->data;
275
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918
280
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diff changeset
919 pool_free(pool, pgfile);
d0d5a970292f implement pg_vfs_dirio_close
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diff changeset
920 pool_free(pool, pg->file);
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diff changeset
921 pool_free(pool, pg);
d0d5a970292f implement pg_vfs_dirio_close
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diff changeset
922 pool_free(pool, dir);
275
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diff changeset
923 }
304
33911d44111d add basic parser for pg timestamps
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diff changeset
924
33911d44111d add basic parser for pg timestamps
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diff changeset
925 time_t pg_convert_timestamp(const char *timestamp) {
311
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diff changeset
926 struct tm tm;
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parents: 305
diff changeset
927 if(pg_convert_timestamp_tm(timestamp, &tm)) {
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parents: 305
diff changeset
928 return 0;
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parents: 305
diff changeset
929 }
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diff changeset
930 #ifdef __FreeBSD__
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diff changeset
931 return timelocal(&tm);
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diff changeset
932 #else
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parents: 305
diff changeset
933 return mktime(&tparts) - timezone;
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diff changeset
934 #endif
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parents: 305
diff changeset
935 }
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parents: 305
diff changeset
936
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diff changeset
937 int pg_convert_timestamp_tm(const char *timestamp, struct tm *tm) {
304
33911d44111d add basic parser for pg timestamps
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diff changeset
938 // TODO: this is a very basic implementation that needs some work
33911d44111d add basic parser for pg timestamps
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diff changeset
939 // format yyyy-mm-dd HH:MM:SS
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diff changeset
940
311
e676ed461b5b implement pg getlastmodified propfind (and prepare creationdate)
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diff changeset
941 memset(tm, 0, sizeof(struct tm));
304
33911d44111d add basic parser for pg timestamps
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diff changeset
942 size_t len = timestamp ? strlen(timestamp) : 0;
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diff changeset
943 if(len < 19) {
311
e676ed461b5b implement pg getlastmodified propfind (and prepare creationdate)
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diff changeset
944 return 1;
304
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diff changeset
945 } else if(len > 63) {
311
e676ed461b5b implement pg getlastmodified propfind (and prepare creationdate)
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diff changeset
946 return 1;
304
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diff changeset
947 }
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diff changeset
948
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diff changeset
949 char buf[64];
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diff changeset
950 memcpy(buf, timestamp, len);
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diff changeset
951
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diff changeset
952 char *year_str = buf;
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diff changeset
953 year_str[4] = '\0';
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954
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diff changeset
955 char *month_str = buf + 5;
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diff changeset
956 month_str[2] = '\0';
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diff changeset
957
33911d44111d add basic parser for pg timestamps
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diff changeset
958 char *day_str = buf + 8;
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diff changeset
959 day_str[2] = '\0';
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diff changeset
960
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diff changeset
961 char *hour_str = buf + 11;
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diff changeset
962 hour_str[2] = '\0';
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diff changeset
963
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diff changeset
964 char *minute_str = buf + 14;
33911d44111d add basic parser for pg timestamps
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parents: 298
diff changeset
965 minute_str[2] = '\0';
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diff changeset
966
33911d44111d add basic parser for pg timestamps
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diff changeset
967 char *second_str = buf + 17;
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diff changeset
968 second_str[2] = '\0';
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diff changeset
969
311
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diff changeset
970 tm->tm_year = atoi(year_str) - 1900;
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diff changeset
971 tm->tm_mon = atoi(month_str) - 1;
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diff changeset
972 tm->tm_mday = atoi(day_str);
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diff changeset
973 tm->tm_hour = atoi(hour_str);
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diff changeset
974 tm->tm_min = atoi(minute_str);
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diff changeset
975 tm->tm_sec = atoi(second_str);
304
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diff changeset
976
311
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diff changeset
977 return 0;
304
33911d44111d add basic parser for pg timestamps
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parents: 298
diff changeset
978 }

mercurial