Mercurial > trustbridge > nss-cmake-static
annotate nspr/pr/src/md/unix/uxshm.c @ 3:150b72113545
Add DBM and legacydb support
author | Andre Heinecke <andre.heinecke@intevation.de> |
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date | Tue, 05 Aug 2014 18:32:02 +0200 |
parents | 1e5118fa0cb1 |
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rev | line source |
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0
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1 /* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 2 -*- */ |
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2 /* This Source Code Form is subject to the terms of the Mozilla Public |
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3 * License, v. 2.0. If a copy of the MPL was not distributed with this |
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4 * file, You can obtain one at http://mozilla.org/MPL/2.0/. */ |
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5 |
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6 /* |
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7 ** uxshm.c -- Unix Implementations NSPR Named Shared Memory |
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8 ** |
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9 ** |
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10 ** lth. Jul-1999. |
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11 ** |
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12 */ |
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13 #include <string.h> |
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14 #include <prshm.h> |
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15 #include <prerr.h> |
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16 #include <prmem.h> |
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17 #include "primpl.h" |
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18 #include <fcntl.h> |
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19 |
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20 extern PRLogModuleInfo *_pr_shm_lm; |
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21 |
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22 |
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23 #define NSPR_IPC_SHM_KEY 'b' |
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24 /* |
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25 ** Implementation for System V |
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26 */ |
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27 #if defined PR_HAVE_SYSV_NAMED_SHARED_MEMORY |
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28 #include <sys/ipc.h> |
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29 #include <sys/shm.h> |
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30 #include <sys/types.h> |
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31 #include <sys/stat.h> |
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32 |
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33 #define _MD_OPEN_SHARED_MEMORY _MD_OpenSharedMemory |
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34 #define _MD_ATTACH_SHARED_MEMORY _MD_AttachSharedMemory |
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35 #define _MD_DETACH_SHARED_MEMORY _MD_DetachSharedMemory |
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36 #define _MD_CLOSE_SHARED_MEMORY _MD_CloseSharedMemory |
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37 #define _MD_DELETE_SHARED_MEMORY _MD_DeleteSharedMemory |
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38 |
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39 extern PRSharedMemory * _MD_OpenSharedMemory( |
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40 const char *name, |
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41 PRSize size, |
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42 PRIntn flags, |
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43 PRIntn mode |
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44 ) |
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45 { |
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46 PRStatus rc = PR_SUCCESS; |
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47 key_t key; |
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48 PRSharedMemory *shm; |
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49 char ipcname[PR_IPC_NAME_SIZE]; |
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50 |
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51 rc = _PR_MakeNativeIPCName( name, ipcname, PR_IPC_NAME_SIZE, _PRIPCShm ); |
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52 if ( PR_FAILURE == rc ) |
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53 { |
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54 _PR_MD_MAP_DEFAULT_ERROR( errno ); |
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55 PR_LOG( _pr_shm_lm, PR_LOG_DEBUG, |
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56 ("_MD_OpenSharedMemory(): _PR_MakeNativeIPCName() failed: %s", name )); |
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57 return( NULL ); |
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58 } |
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59 |
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60 shm = PR_NEWZAP( PRSharedMemory ); |
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61 if ( NULL == shm ) |
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62 { |
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63 PR_SetError(PR_OUT_OF_MEMORY_ERROR, 0 ); |
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64 PR_LOG(_pr_shm_lm, PR_LOG_DEBUG, ( "PR_OpenSharedMemory: New PRSharedMemory out of memory")); |
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65 return( NULL ); |
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66 } |
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67 |
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68 shm->ipcname = (char*)PR_MALLOC( strlen( ipcname ) + 1 ); |
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69 if ( NULL == shm->ipcname ) |
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70 { |
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71 PR_SetError(PR_OUT_OF_MEMORY_ERROR, 0 ); |
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72 PR_LOG(_pr_shm_lm, PR_LOG_DEBUG, ( "PR_OpenSharedMemory: New shm->ipcname out of memory")); |
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73 PR_DELETE( shm ); |
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74 return( NULL ); |
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75 } |
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76 |
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77 /* copy args to struct */ |
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78 strcpy( shm->ipcname, ipcname ); |
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79 shm->size = size; |
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80 shm->mode = mode; |
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81 shm->flags = flags; |
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82 shm->ident = _PR_SHM_IDENT; |
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83 |
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84 /* create the file first */ |
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85 if ( flags & PR_SHM_CREATE ) { |
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86 int osfd = open( shm->ipcname, (O_RDWR | O_CREAT), shm->mode ); |
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87 if ( -1 == osfd ) { |
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88 _PR_MD_MAP_OPEN_ERROR( errno ); |
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89 PR_FREEIF( shm->ipcname ); |
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90 PR_DELETE( shm ); |
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91 return( NULL ); |
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92 } |
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93 if ( close(osfd) == -1 ) { |
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94 _PR_MD_MAP_CLOSE_ERROR( errno ); |
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95 PR_FREEIF( shm->ipcname ); |
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96 PR_DELETE( shm ); |
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97 return( NULL ); |
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98 } |
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99 } |
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100 |
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101 /* hash the shm.name to an ID */ |
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102 key = ftok( shm->ipcname, NSPR_IPC_SHM_KEY ); |
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103 if ( -1 == key ) |
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104 { |
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105 rc = PR_FAILURE; |
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106 _PR_MD_MAP_DEFAULT_ERROR( errno ); |
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107 PR_LOG( _pr_shm_lm, PR_LOG_DEBUG, |
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108 ("_MD_OpenSharedMemory(): ftok() failed on name: %s", shm->ipcname)); |
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109 PR_FREEIF( shm->ipcname ); |
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110 PR_DELETE( shm ); |
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111 return( NULL ); |
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112 } |
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113 |
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114 /* get the shared memory */ |
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115 if ( flags & PR_SHM_CREATE ) { |
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116 shm->id = shmget( key, shm->size, ( shm->mode | IPC_CREAT|IPC_EXCL)); |
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117 if ( shm->id >= 0 ) { |
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118 return( shm ); |
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119 } |
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120 if ((errno == EEXIST) && (flags & PR_SHM_EXCL)) { |
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121 PR_SetError( PR_FILE_EXISTS_ERROR, errno ); |
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122 PR_LOG( _pr_shm_lm, PR_LOG_DEBUG, |
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123 ("_MD_OpenSharedMemory(): shmget() exclusive failed, errno: %d", errno)); |
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124 PR_FREEIF(shm->ipcname); |
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125 PR_DELETE(shm); |
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126 return(NULL); |
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127 } |
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128 } |
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129 |
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130 shm->id = shmget( key, shm->size, shm->mode ); |
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131 if ( -1 == shm->id ) { |
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132 _PR_MD_MAP_DEFAULT_ERROR( errno ); |
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133 PR_LOG( _pr_shm_lm, PR_LOG_DEBUG, |
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134 ("_MD_OpenSharedMemory(): shmget() failed, errno: %d", errno)); |
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135 PR_FREEIF(shm->ipcname); |
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136 PR_DELETE(shm); |
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137 return(NULL); |
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138 } |
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139 |
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140 return( shm ); |
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141 } /* end _MD_OpenSharedMemory() */ |
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142 |
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143 extern void * _MD_AttachSharedMemory( PRSharedMemory *shm, PRIntn flags ) |
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144 { |
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145 void *addr; |
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146 PRUint32 aFlags = shm->mode; |
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147 |
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148 PR_ASSERT( shm->ident == _PR_SHM_IDENT ); |
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149 |
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150 aFlags |= (flags & PR_SHM_READONLY )? SHM_RDONLY : 0; |
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151 |
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152 addr = shmat( shm->id, NULL, aFlags ); |
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153 if ( (void*)-1 == addr ) |
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154 { |
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155 _PR_MD_MAP_DEFAULT_ERROR( errno ); |
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156 PR_LOG( _pr_shm_lm, PR_LOG_DEBUG, |
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157 ("_MD_AttachSharedMemory(): shmat() failed on name: %s, OsError: %d", |
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158 shm->ipcname, PR_GetOSError() )); |
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159 addr = NULL; |
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160 } |
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161 |
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162 return addr; |
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163 } |
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164 |
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165 extern PRStatus _MD_DetachSharedMemory( PRSharedMemory *shm, void *addr ) |
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166 { |
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167 PRStatus rc = PR_SUCCESS; |
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168 PRIntn urc; |
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169 |
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170 PR_ASSERT( shm->ident == _PR_SHM_IDENT ); |
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171 |
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172 urc = shmdt( addr ); |
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173 if ( -1 == urc ) |
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174 { |
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175 rc = PR_FAILURE; |
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176 _PR_MD_MAP_DEFAULT_ERROR( errno ); |
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177 PR_LOG( _pr_shm_lm, PR_LOG_DEBUG, |
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178 ("_MD_DetachSharedMemory(): shmdt() failed on name: %s", shm->ipcname )); |
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179 } |
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180 |
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181 return rc; |
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182 } |
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183 |
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184 extern PRStatus _MD_CloseSharedMemory( PRSharedMemory *shm ) |
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185 { |
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186 PR_ASSERT( shm->ident == _PR_SHM_IDENT ); |
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187 |
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188 PR_FREEIF(shm->ipcname); |
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189 PR_DELETE(shm); |
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190 |
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191 return PR_SUCCESS; |
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192 } |
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193 |
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194 extern PRStatus _MD_DeleteSharedMemory( const char *name ) |
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195 { |
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196 PRStatus rc = PR_SUCCESS; |
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197 key_t key; |
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198 int id; |
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199 PRIntn urc; |
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200 char ipcname[PR_IPC_NAME_SIZE]; |
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201 |
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202 rc = _PR_MakeNativeIPCName( name, ipcname, PR_IPC_NAME_SIZE, _PRIPCShm ); |
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203 if ( PR_FAILURE == rc ) |
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204 { |
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205 PR_SetError( PR_UNKNOWN_ERROR , errno ); |
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206 PR_LOG( _pr_shm_lm, PR_LOG_DEBUG, |
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207 ("_MD_DeleteSharedMemory(): _PR_MakeNativeIPCName() failed: %s", name )); |
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208 return(PR_FAILURE); |
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209 } |
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210 |
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211 /* create the file first */ |
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212 { |
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213 int osfd = open( ipcname, (O_RDWR | O_CREAT), 0666 ); |
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214 if ( -1 == osfd ) { |
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215 _PR_MD_MAP_OPEN_ERROR( errno ); |
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216 return( PR_FAILURE ); |
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217 } |
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218 if ( close(osfd) == -1 ) { |
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219 _PR_MD_MAP_CLOSE_ERROR( errno ); |
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220 return( PR_FAILURE ); |
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221 } |
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222 } |
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223 |
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224 /* hash the shm.name to an ID */ |
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225 key = ftok( ipcname, NSPR_IPC_SHM_KEY ); |
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226 if ( -1 == key ) |
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227 { |
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228 rc = PR_FAILURE; |
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229 _PR_MD_MAP_DEFAULT_ERROR( errno ); |
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230 PR_LOG( _pr_shm_lm, PR_LOG_DEBUG, |
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231 ("_MD_DeleteSharedMemory(): ftok() failed on name: %s", ipcname)); |
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232 } |
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233 |
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234 #ifdef SYMBIAN |
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235 /* In Symbian OS the system imposed minimum is 1 byte, instead of ZERO */ |
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236 id = shmget( key, 1, 0 ); |
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237 #else |
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238 id = shmget( key, 0, 0 ); |
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239 #endif |
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240 if ( -1 == id ) { |
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241 _PR_MD_MAP_DEFAULT_ERROR( errno ); |
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242 PR_LOG( _pr_shm_lm, PR_LOG_DEBUG, |
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243 ("_MD_DeleteSharedMemory(): shmget() failed, errno: %d", errno)); |
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244 return(PR_FAILURE); |
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245 } |
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246 |
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247 urc = shmctl( id, IPC_RMID, NULL ); |
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248 if ( -1 == urc ) |
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249 { |
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250 _PR_MD_MAP_DEFAULT_ERROR( errno ); |
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251 PR_LOG( _pr_shm_lm, PR_LOG_DEBUG, |
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252 ("_MD_DeleteSharedMemory(): shmctl() failed on name: %s", ipcname )); |
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253 return(PR_FAILURE); |
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254 } |
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255 |
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256 urc = unlink( ipcname ); |
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257 if ( -1 == urc ) { |
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258 _PR_MD_MAP_UNLINK_ERROR( errno ); |
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259 PR_LOG( _pr_shm_lm, PR_LOG_DEBUG, |
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260 ("_MD_DeleteSharedMemory(): unlink() failed: %s", ipcname )); |
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261 return(PR_FAILURE); |
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262 } |
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263 |
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264 return rc; |
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265 } /* end _MD_DeleteSharedMemory() */ |
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266 |
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267 /* |
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268 ** Implementation for Posix |
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269 */ |
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270 #elif defined PR_HAVE_POSIX_NAMED_SHARED_MEMORY |
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271 #include <sys/mman.h> |
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272 |
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273 #define _MD_OPEN_SHARED_MEMORY _MD_OpenSharedMemory |
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274 #define _MD_ATTACH_SHARED_MEMORY _MD_AttachSharedMemory |
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275 #define _MD_DETACH_SHARED_MEMORY _MD_DetachSharedMemory |
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276 #define _MD_CLOSE_SHARED_MEMORY _MD_CloseSharedMemory |
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277 #define _MD_DELETE_SHARED_MEMORY _MD_DeleteSharedMemory |
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278 |
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279 struct _MDSharedMemory { |
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280 int handle; |
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281 }; |
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282 |
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283 extern PRSharedMemory * _MD_OpenSharedMemory( |
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284 const char *name, |
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285 PRSize size, |
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286 PRIntn flags, |
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287 PRIntn mode |
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288 ) |
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289 { |
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290 PRStatus rc = PR_SUCCESS; |
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291 PRInt32 end; |
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292 PRSharedMemory *shm; |
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293 char ipcname[PR_IPC_NAME_SIZE]; |
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294 |
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295 rc = _PR_MakeNativeIPCName( name, ipcname, PR_IPC_NAME_SIZE, _PRIPCShm ); |
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296 if ( PR_FAILURE == rc ) |
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297 { |
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298 PR_SetError( PR_UNKNOWN_ERROR , errno ); |
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299 PR_LOG( _pr_shm_lm, PR_LOG_DEBUG, |
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300 ("_MD_OpenSharedMemory(): _PR_MakeNativeIPCName() failed: %s", name )); |
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301 return( NULL ); |
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302 } |
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303 |
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304 shm = PR_NEWZAP( PRSharedMemory ); |
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305 if ( NULL == shm ) |
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306 { |
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307 PR_SetError(PR_OUT_OF_MEMORY_ERROR, 0 ); |
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308 PR_LOG(_pr_shm_lm, PR_LOG_DEBUG, ( "PR_OpenSharedMemory: New PRSharedMemory out of memory")); |
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309 return( NULL ); |
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310 } |
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311 |
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312 shm->ipcname = PR_MALLOC( strlen( ipcname ) + 1 ); |
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313 if ( NULL == shm->ipcname ) |
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314 { |
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315 PR_SetError(PR_OUT_OF_MEMORY_ERROR, 0 ); |
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316 PR_LOG(_pr_shm_lm, PR_LOG_DEBUG, ( "PR_OpenSharedMemory: New shm->ipcname out of memory")); |
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317 return( NULL ); |
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318 } |
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319 |
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320 /* copy args to struct */ |
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321 strcpy( shm->ipcname, ipcname ); |
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322 shm->size = size; |
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323 shm->mode = mode; |
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324 shm->flags = flags; |
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325 shm->ident = _PR_SHM_IDENT; |
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326 |
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327 /* |
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328 ** Create the shared memory |
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329 */ |
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330 if ( flags & PR_SHM_CREATE ) { |
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331 int oflag = (O_CREAT | O_RDWR); |
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332 |
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333 if ( flags & PR_SHM_EXCL ) |
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334 oflag |= O_EXCL; |
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335 shm->id = shm_open( shm->ipcname, oflag, shm->mode ); |
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336 } else { |
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337 shm->id = shm_open( shm->ipcname, O_RDWR, shm->mode ); |
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338 } |
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339 |
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340 if ( -1 == shm->id ) { |
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341 _PR_MD_MAP_DEFAULT_ERROR( errno ); |
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342 PR_LOG(_pr_shm_lm, PR_LOG_DEBUG, |
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343 ("_MD_OpenSharedMemory(): shm_open failed: %s, OSError: %d", |
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344 shm->ipcname, PR_GetOSError())); |
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345 PR_DELETE( shm->ipcname ); |
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346 PR_DELETE( shm ); |
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347 return(NULL); |
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348 } |
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349 |
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350 end = ftruncate( shm->id, shm->size ); |
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351 if ( -1 == end ) { |
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352 _PR_MD_MAP_DEFAULT_ERROR( errno ); |
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353 PR_LOG(_pr_shm_lm, PR_LOG_DEBUG, |
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354 ("_MD_OpenSharedMemory(): ftruncate failed, OSError: %d", |
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355 PR_GetOSError())); |
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356 PR_DELETE( shm->ipcname ); |
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357 PR_DELETE( shm ); |
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358 return(NULL); |
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359 } |
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360 |
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361 return(shm); |
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362 } /* end _MD_OpenSharedMemory() */ |
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363 |
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364 extern void * _MD_AttachSharedMemory( PRSharedMemory *shm, PRIntn flags ) |
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365 { |
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366 void *addr; |
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367 PRIntn prot = (PROT_READ | PROT_WRITE); |
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368 |
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369 PR_ASSERT( shm->ident == _PR_SHM_IDENT ); |
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370 |
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371 if ( PR_SHM_READONLY == flags) |
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372 prot ^= PROT_WRITE; |
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373 |
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374 addr = mmap( (void*)0, shm->size, prot, MAP_SHARED, shm->id, 0 ); |
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375 if ((void*)-1 == addr ) |
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376 { |
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377 _PR_MD_MAP_DEFAULT_ERROR( errno ); |
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378 PR_LOG( _pr_shm_lm, PR_LOG_DEBUG, |
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379 ("_MD_AttachSharedMemory(): mmap failed: %s, errno: %d", |
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380 shm->ipcname, PR_GetOSError())); |
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381 addr = NULL; |
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382 } else { |
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383 PR_LOG( _pr_shm_lm, PR_LOG_DEBUG, |
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384 ("_MD_AttachSharedMemory(): name: %s, attached at: %p", shm->ipcname, addr)); |
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385 } |
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386 |
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387 return addr; |
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388 } |
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389 |
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390 extern PRStatus _MD_DetachSharedMemory( PRSharedMemory *shm, void *addr ) |
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391 { |
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392 PRStatus rc = PR_SUCCESS; |
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393 PRIntn urc; |
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394 |
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395 PR_ASSERT( shm->ident == _PR_SHM_IDENT ); |
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396 |
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397 urc = munmap( addr, shm->size ); |
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398 if ( -1 == urc ) |
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399 { |
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400 rc = PR_FAILURE; |
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401 _PR_MD_MAP_DEFAULT_ERROR( errno ); |
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402 PR_LOG( _pr_shm_lm, PR_LOG_DEBUG, |
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403 ("_MD_DetachSharedMemory(): munmap failed: %s, errno: %d", |
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404 shm->ipcname, PR_GetOSError())); |
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405 } |
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406 return rc; |
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407 } |
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408 |
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409 extern PRStatus _MD_CloseSharedMemory( PRSharedMemory *shm ) |
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410 { |
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411 int urc; |
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412 |
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413 PR_ASSERT( shm->ident == _PR_SHM_IDENT ); |
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414 |
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415 urc = close( shm->id ); |
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416 if ( -1 == urc ) { |
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417 _PR_MD_MAP_CLOSE_ERROR( errno ); |
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418 PR_LOG( _pr_shm_lm, PR_LOG_DEBUG, |
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419 ("_MD_CloseSharedMemory(): close() failed, error: %d", PR_GetOSError())); |
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420 return(PR_FAILURE); |
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421 } |
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422 PR_DELETE( shm->ipcname ); |
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423 PR_DELETE( shm ); |
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424 return PR_SUCCESS; |
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425 } |
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426 |
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427 extern PRStatus _MD_DeleteSharedMemory( const char *name ) |
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428 { |
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429 PRStatus rc = PR_SUCCESS; |
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430 PRUintn urc; |
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431 char ipcname[PR_IPC_NAME_SIZE]; |
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432 |
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433 rc = _PR_MakeNativeIPCName( name, ipcname, PR_IPC_NAME_SIZE, _PRIPCShm ); |
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434 if ( PR_FAILURE == rc ) |
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435 { |
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436 PR_SetError( PR_UNKNOWN_ERROR , errno ); |
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437 PR_LOG( _pr_shm_lm, PR_LOG_DEBUG, |
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438 ("_MD_OpenSharedMemory(): _PR_MakeNativeIPCName() failed: %s", name )); |
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439 return rc; |
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440 } |
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441 |
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442 urc = shm_unlink( ipcname ); |
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443 if ( -1 == urc ) { |
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444 rc = PR_FAILURE; |
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445 _PR_MD_MAP_DEFAULT_ERROR( errno ); |
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446 PR_LOG( _pr_shm_lm, PR_LOG_DEBUG, |
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447 ("_MD_DeleteSharedMemory(): shm_unlink failed: %s, errno: %d", |
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448 ipcname, PR_GetOSError())); |
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449 } else { |
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450 PR_LOG( _pr_shm_lm, PR_LOG_DEBUG, |
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451 ("_MD_DeleteSharedMemory(): %s, success", ipcname)); |
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452 } |
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453 |
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454 return rc; |
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455 } /* end _MD_DeleteSharedMemory() */ |
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456 #endif |
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457 |
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458 |
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459 |
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460 /* |
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461 ** Unix implementation for anonymous memory (file) mapping |
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462 */ |
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463 extern PRLogModuleInfo *_pr_shma_lm; |
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464 |
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465 #include <unistd.h> |
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466 |
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This is NSS with a Cmake Buildsyste
Andre Heinecke <andre.heinecke@intevation.de>
parents:
diff
changeset
|
467 extern PRFileMap* _md_OpenAnonFileMap( |
1e5118fa0cb1
This is NSS with a Cmake Buildsyste
Andre Heinecke <andre.heinecke@intevation.de>
parents:
diff
changeset
|
468 const char *dirName, |
1e5118fa0cb1
This is NSS with a Cmake Buildsyste
Andre Heinecke <andre.heinecke@intevation.de>
parents:
diff
changeset
|
469 PRSize size, |
1e5118fa0cb1
This is NSS with a Cmake Buildsyste
Andre Heinecke <andre.heinecke@intevation.de>
parents:
diff
changeset
|
470 PRFileMapProtect prot |
1e5118fa0cb1
This is NSS with a Cmake Buildsyste
Andre Heinecke <andre.heinecke@intevation.de>
parents:
diff
changeset
|
471 ) |
1e5118fa0cb1
This is NSS with a Cmake Buildsyste
Andre Heinecke <andre.heinecke@intevation.de>
parents:
diff
changeset
|
472 { |
1e5118fa0cb1
This is NSS with a Cmake Buildsyste
Andre Heinecke <andre.heinecke@intevation.de>
parents:
diff
changeset
|
473 PRFileMap *fm = NULL; |
1e5118fa0cb1
This is NSS with a Cmake Buildsyste
Andre Heinecke <andre.heinecke@intevation.de>
parents:
diff
changeset
|
474 PRFileDesc *fd; |
1e5118fa0cb1
This is NSS with a Cmake Buildsyste
Andre Heinecke <andre.heinecke@intevation.de>
parents:
diff
changeset
|
475 int osfd; |
1e5118fa0cb1
This is NSS with a Cmake Buildsyste
Andre Heinecke <andre.heinecke@intevation.de>
parents:
diff
changeset
|
476 PRIntn urc; |
1e5118fa0cb1
This is NSS with a Cmake Buildsyste
Andre Heinecke <andre.heinecke@intevation.de>
parents:
diff
changeset
|
477 PRIntn mode = 0600; |
1e5118fa0cb1
This is NSS with a Cmake Buildsyste
Andre Heinecke <andre.heinecke@intevation.de>
parents:
diff
changeset
|
478 char *genName; |
1e5118fa0cb1
This is NSS with a Cmake Buildsyste
Andre Heinecke <andre.heinecke@intevation.de>
parents:
diff
changeset
|
479 pid_t pid = getpid(); /* for generating filename */ |
1e5118fa0cb1
This is NSS with a Cmake Buildsyste
Andre Heinecke <andre.heinecke@intevation.de>
parents:
diff
changeset
|
480 PRThread *tid = PR_GetCurrentThread(); /* for generating filename */ |
1e5118fa0cb1
This is NSS with a Cmake Buildsyste
Andre Heinecke <andre.heinecke@intevation.de>
parents:
diff
changeset
|
481 int incr; /* for generating filename */ |
1e5118fa0cb1
This is NSS with a Cmake Buildsyste
Andre Heinecke <andre.heinecke@intevation.de>
parents:
diff
changeset
|
482 const int maxTries = 20; /* maximum # attempts at a unique filename */ |
1e5118fa0cb1
This is NSS with a Cmake Buildsyste
Andre Heinecke <andre.heinecke@intevation.de>
parents:
diff
changeset
|
483 PRInt64 size64; /* 64-bit version of 'size' */ |
1e5118fa0cb1
This is NSS with a Cmake Buildsyste
Andre Heinecke <andre.heinecke@intevation.de>
parents:
diff
changeset
|
484 |
1e5118fa0cb1
This is NSS with a Cmake Buildsyste
Andre Heinecke <andre.heinecke@intevation.de>
parents:
diff
changeset
|
485 /* |
1e5118fa0cb1
This is NSS with a Cmake Buildsyste
Andre Heinecke <andre.heinecke@intevation.de>
parents:
diff
changeset
|
486 ** generate a filename from input and runtime environment |
1e5118fa0cb1
This is NSS with a Cmake Buildsyste
Andre Heinecke <andre.heinecke@intevation.de>
parents:
diff
changeset
|
487 ** open the file, unlink the file. |
1e5118fa0cb1
This is NSS with a Cmake Buildsyste
Andre Heinecke <andre.heinecke@intevation.de>
parents:
diff
changeset
|
488 ** make maxTries number of attempts at uniqueness in the filename |
1e5118fa0cb1
This is NSS with a Cmake Buildsyste
Andre Heinecke <andre.heinecke@intevation.de>
parents:
diff
changeset
|
489 */ |
1e5118fa0cb1
This is NSS with a Cmake Buildsyste
Andre Heinecke <andre.heinecke@intevation.de>
parents:
diff
changeset
|
490 for ( incr = 0; incr < maxTries ; incr++ ) { |
1e5118fa0cb1
This is NSS with a Cmake Buildsyste
Andre Heinecke <andre.heinecke@intevation.de>
parents:
diff
changeset
|
491 #if defined(SYMBIAN) |
1e5118fa0cb1
This is NSS with a Cmake Buildsyste
Andre Heinecke <andre.heinecke@intevation.de>
parents:
diff
changeset
|
492 #define NSPR_AFM_FILENAME "%s\\NSPR-AFM-%d-%p.%d" |
1e5118fa0cb1
This is NSS with a Cmake Buildsyste
Andre Heinecke <andre.heinecke@intevation.de>
parents:
diff
changeset
|
493 #else |
1e5118fa0cb1
This is NSS with a Cmake Buildsyste
Andre Heinecke <andre.heinecke@intevation.de>
parents:
diff
changeset
|
494 #define NSPR_AFM_FILENAME "%s/.NSPR-AFM-%d-%p.%d" |
1e5118fa0cb1
This is NSS with a Cmake Buildsyste
Andre Heinecke <andre.heinecke@intevation.de>
parents:
diff
changeset
|
495 #endif |
1e5118fa0cb1
This is NSS with a Cmake Buildsyste
Andre Heinecke <andre.heinecke@intevation.de>
parents:
diff
changeset
|
496 genName = PR_smprintf( NSPR_AFM_FILENAME, |
1e5118fa0cb1
This is NSS with a Cmake Buildsyste
Andre Heinecke <andre.heinecke@intevation.de>
parents:
diff
changeset
|
497 dirName, (int) pid, tid, incr ); |
1e5118fa0cb1
This is NSS with a Cmake Buildsyste
Andre Heinecke <andre.heinecke@intevation.de>
parents:
diff
changeset
|
498 if ( NULL == genName ) { |
1e5118fa0cb1
This is NSS with a Cmake Buildsyste
Andre Heinecke <andre.heinecke@intevation.de>
parents:
diff
changeset
|
499 PR_LOG( _pr_shma_lm, PR_LOG_DEBUG, |
1e5118fa0cb1
This is NSS with a Cmake Buildsyste
Andre Heinecke <andre.heinecke@intevation.de>
parents:
diff
changeset
|
500 ("_md_OpenAnonFileMap(): PR_snprintf(): failed, generating filename")); |
1e5118fa0cb1
This is NSS with a Cmake Buildsyste
Andre Heinecke <andre.heinecke@intevation.de>
parents:
diff
changeset
|
501 goto Finished; |
1e5118fa0cb1
This is NSS with a Cmake Buildsyste
Andre Heinecke <andre.heinecke@intevation.de>
parents:
diff
changeset
|
502 } |
1e5118fa0cb1
This is NSS with a Cmake Buildsyste
Andre Heinecke <andre.heinecke@intevation.de>
parents:
diff
changeset
|
503 |
1e5118fa0cb1
This is NSS with a Cmake Buildsyste
Andre Heinecke <andre.heinecke@intevation.de>
parents:
diff
changeset
|
504 /* create the file */ |
1e5118fa0cb1
This is NSS with a Cmake Buildsyste
Andre Heinecke <andre.heinecke@intevation.de>
parents:
diff
changeset
|
505 osfd = open( genName, (O_CREAT | O_EXCL | O_RDWR), mode ); |
1e5118fa0cb1
This is NSS with a Cmake Buildsyste
Andre Heinecke <andre.heinecke@intevation.de>
parents:
diff
changeset
|
506 if ( -1 == osfd ) { |
1e5118fa0cb1
This is NSS with a Cmake Buildsyste
Andre Heinecke <andre.heinecke@intevation.de>
parents:
diff
changeset
|
507 if ( EEXIST == errno ) { |
1e5118fa0cb1
This is NSS with a Cmake Buildsyste
Andre Heinecke <andre.heinecke@intevation.de>
parents:
diff
changeset
|
508 PR_smprintf_free( genName ); |
1e5118fa0cb1
This is NSS with a Cmake Buildsyste
Andre Heinecke <andre.heinecke@intevation.de>
parents:
diff
changeset
|
509 continue; /* name exists, try again */ |
1e5118fa0cb1
This is NSS with a Cmake Buildsyste
Andre Heinecke <andre.heinecke@intevation.de>
parents:
diff
changeset
|
510 } else { |
1e5118fa0cb1
This is NSS with a Cmake Buildsyste
Andre Heinecke <andre.heinecke@intevation.de>
parents:
diff
changeset
|
511 _PR_MD_MAP_OPEN_ERROR( errno ); |
1e5118fa0cb1
This is NSS with a Cmake Buildsyste
Andre Heinecke <andre.heinecke@intevation.de>
parents:
diff
changeset
|
512 PR_LOG( _pr_shma_lm, PR_LOG_DEBUG, |
1e5118fa0cb1
This is NSS with a Cmake Buildsyste
Andre Heinecke <andre.heinecke@intevation.de>
parents:
diff
changeset
|
513 ("_md_OpenAnonFileMap(): open(): failed, filename: %s, errno: %d", |
1e5118fa0cb1
This is NSS with a Cmake Buildsyste
Andre Heinecke <andre.heinecke@intevation.de>
parents:
diff
changeset
|
514 genName, PR_GetOSError())); |
1e5118fa0cb1
This is NSS with a Cmake Buildsyste
Andre Heinecke <andre.heinecke@intevation.de>
parents:
diff
changeset
|
515 PR_smprintf_free( genName ); |
1e5118fa0cb1
This is NSS with a Cmake Buildsyste
Andre Heinecke <andre.heinecke@intevation.de>
parents:
diff
changeset
|
516 goto Finished; |
1e5118fa0cb1
This is NSS with a Cmake Buildsyste
Andre Heinecke <andre.heinecke@intevation.de>
parents:
diff
changeset
|
517 } |
1e5118fa0cb1
This is NSS with a Cmake Buildsyste
Andre Heinecke <andre.heinecke@intevation.de>
parents:
diff
changeset
|
518 } |
1e5118fa0cb1
This is NSS with a Cmake Buildsyste
Andre Heinecke <andre.heinecke@intevation.de>
parents:
diff
changeset
|
519 break; /* name generation and open successful, break; */ |
1e5118fa0cb1
This is NSS with a Cmake Buildsyste
Andre Heinecke <andre.heinecke@intevation.de>
parents:
diff
changeset
|
520 } /* end for() */ |
1e5118fa0cb1
This is NSS with a Cmake Buildsyste
Andre Heinecke <andre.heinecke@intevation.de>
parents:
diff
changeset
|
521 |
1e5118fa0cb1
This is NSS with a Cmake Buildsyste
Andre Heinecke <andre.heinecke@intevation.de>
parents:
diff
changeset
|
522 if ( incr == maxTries ) { |
1e5118fa0cb1
This is NSS with a Cmake Buildsyste
Andre Heinecke <andre.heinecke@intevation.de>
parents:
diff
changeset
|
523 PR_ASSERT( -1 == osfd ); |
1e5118fa0cb1
This is NSS with a Cmake Buildsyste
Andre Heinecke <andre.heinecke@intevation.de>
parents:
diff
changeset
|
524 PR_ASSERT( EEXIST == errno ); |
1e5118fa0cb1
This is NSS with a Cmake Buildsyste
Andre Heinecke <andre.heinecke@intevation.de>
parents:
diff
changeset
|
525 _PR_MD_MAP_OPEN_ERROR( errno ); |
1e5118fa0cb1
This is NSS with a Cmake Buildsyste
Andre Heinecke <andre.heinecke@intevation.de>
parents:
diff
changeset
|
526 goto Finished; |
1e5118fa0cb1
This is NSS with a Cmake Buildsyste
Andre Heinecke <andre.heinecke@intevation.de>
parents:
diff
changeset
|
527 } |
1e5118fa0cb1
This is NSS with a Cmake Buildsyste
Andre Heinecke <andre.heinecke@intevation.de>
parents:
diff
changeset
|
528 |
1e5118fa0cb1
This is NSS with a Cmake Buildsyste
Andre Heinecke <andre.heinecke@intevation.de>
parents:
diff
changeset
|
529 urc = unlink( genName ); |
1e5118fa0cb1
This is NSS with a Cmake Buildsyste
Andre Heinecke <andre.heinecke@intevation.de>
parents:
diff
changeset
|
530 #if defined(SYMBIAN) && defined(__WINS__) |
1e5118fa0cb1
This is NSS with a Cmake Buildsyste
Andre Heinecke <andre.heinecke@intevation.de>
parents:
diff
changeset
|
531 /* If it is being used by the system or another process, Symbian OS |
1e5118fa0cb1
This is NSS with a Cmake Buildsyste
Andre Heinecke <andre.heinecke@intevation.de>
parents:
diff
changeset
|
532 * Emulator(WINS) considers this an error. */ |
1e5118fa0cb1
This is NSS with a Cmake Buildsyste
Andre Heinecke <andre.heinecke@intevation.de>
parents:
diff
changeset
|
533 if ( -1 == urc && EACCES != errno ) { |
1e5118fa0cb1
This is NSS with a Cmake Buildsyste
Andre Heinecke <andre.heinecke@intevation.de>
parents:
diff
changeset
|
534 #else |
1e5118fa0cb1
This is NSS with a Cmake Buildsyste
Andre Heinecke <andre.heinecke@intevation.de>
parents:
diff
changeset
|
535 if ( -1 == urc ) { |
1e5118fa0cb1
This is NSS with a Cmake Buildsyste
Andre Heinecke <andre.heinecke@intevation.de>
parents:
diff
changeset
|
536 #endif |
1e5118fa0cb1
This is NSS with a Cmake Buildsyste
Andre Heinecke <andre.heinecke@intevation.de>
parents:
diff
changeset
|
537 _PR_MD_MAP_UNLINK_ERROR( errno ); |
1e5118fa0cb1
This is NSS with a Cmake Buildsyste
Andre Heinecke <andre.heinecke@intevation.de>
parents:
diff
changeset
|
538 PR_LOG( _pr_shma_lm, PR_LOG_DEBUG, |
1e5118fa0cb1
This is NSS with a Cmake Buildsyste
Andre Heinecke <andre.heinecke@intevation.de>
parents:
diff
changeset
|
539 ("_md_OpenAnonFileMap(): failed on unlink(), errno: %d", errno)); |
1e5118fa0cb1
This is NSS with a Cmake Buildsyste
Andre Heinecke <andre.heinecke@intevation.de>
parents:
diff
changeset
|
540 PR_smprintf_free( genName ); |
1e5118fa0cb1
This is NSS with a Cmake Buildsyste
Andre Heinecke <andre.heinecke@intevation.de>
parents:
diff
changeset
|
541 close( osfd ); |
1e5118fa0cb1
This is NSS with a Cmake Buildsyste
Andre Heinecke <andre.heinecke@intevation.de>
parents:
diff
changeset
|
542 goto Finished; |
1e5118fa0cb1
This is NSS with a Cmake Buildsyste
Andre Heinecke <andre.heinecke@intevation.de>
parents:
diff
changeset
|
543 } |
1e5118fa0cb1
This is NSS with a Cmake Buildsyste
Andre Heinecke <andre.heinecke@intevation.de>
parents:
diff
changeset
|
544 PR_LOG( _pr_shma_lm, PR_LOG_DEBUG, |
1e5118fa0cb1
This is NSS with a Cmake Buildsyste
Andre Heinecke <andre.heinecke@intevation.de>
parents:
diff
changeset
|
545 ("_md_OpenAnonFileMap(): unlink(): %s", genName )); |
1e5118fa0cb1
This is NSS with a Cmake Buildsyste
Andre Heinecke <andre.heinecke@intevation.de>
parents:
diff
changeset
|
546 |
1e5118fa0cb1
This is NSS with a Cmake Buildsyste
Andre Heinecke <andre.heinecke@intevation.de>
parents:
diff
changeset
|
547 PR_smprintf_free( genName ); |
1e5118fa0cb1
This is NSS with a Cmake Buildsyste
Andre Heinecke <andre.heinecke@intevation.de>
parents:
diff
changeset
|
548 |
1e5118fa0cb1
This is NSS with a Cmake Buildsyste
Andre Heinecke <andre.heinecke@intevation.de>
parents:
diff
changeset
|
549 fd = PR_ImportFile( osfd ); |
1e5118fa0cb1
This is NSS with a Cmake Buildsyste
Andre Heinecke <andre.heinecke@intevation.de>
parents:
diff
changeset
|
550 if ( NULL == fd ) { |
1e5118fa0cb1
This is NSS with a Cmake Buildsyste
Andre Heinecke <andre.heinecke@intevation.de>
parents:
diff
changeset
|
551 PR_LOG( _pr_shma_lm, PR_LOG_DEBUG, |
1e5118fa0cb1
This is NSS with a Cmake Buildsyste
Andre Heinecke <andre.heinecke@intevation.de>
parents:
diff
changeset
|
552 ("_md_OpenAnonFileMap(): PR_ImportFile(): failed")); |
1e5118fa0cb1
This is NSS with a Cmake Buildsyste
Andre Heinecke <andre.heinecke@intevation.de>
parents:
diff
changeset
|
553 goto Finished; |
1e5118fa0cb1
This is NSS with a Cmake Buildsyste
Andre Heinecke <andre.heinecke@intevation.de>
parents:
diff
changeset
|
554 } |
1e5118fa0cb1
This is NSS with a Cmake Buildsyste
Andre Heinecke <andre.heinecke@intevation.de>
parents:
diff
changeset
|
555 PR_LOG( _pr_shma_lm, PR_LOG_DEBUG, |
1e5118fa0cb1
This is NSS with a Cmake Buildsyste
Andre Heinecke <andre.heinecke@intevation.de>
parents:
diff
changeset
|
556 ("_md_OpenAnonFileMap(): fd: %p", fd )); |
1e5118fa0cb1
This is NSS with a Cmake Buildsyste
Andre Heinecke <andre.heinecke@intevation.de>
parents:
diff
changeset
|
557 |
1e5118fa0cb1
This is NSS with a Cmake Buildsyste
Andre Heinecke <andre.heinecke@intevation.de>
parents:
diff
changeset
|
558 urc = ftruncate( fd->secret->md.osfd, size ); |
1e5118fa0cb1
This is NSS with a Cmake Buildsyste
Andre Heinecke <andre.heinecke@intevation.de>
parents:
diff
changeset
|
559 if ( -1 == urc ) { |
1e5118fa0cb1
This is NSS with a Cmake Buildsyste
Andre Heinecke <andre.heinecke@intevation.de>
parents:
diff
changeset
|
560 _PR_MD_MAP_DEFAULT_ERROR( errno ); |
1e5118fa0cb1
This is NSS with a Cmake Buildsyste
Andre Heinecke <andre.heinecke@intevation.de>
parents:
diff
changeset
|
561 PR_LOG( _pr_shma_lm, PR_LOG_DEBUG, |
1e5118fa0cb1
This is NSS with a Cmake Buildsyste
Andre Heinecke <andre.heinecke@intevation.de>
parents:
diff
changeset
|
562 ("_md_OpenAnonFileMap(): failed on ftruncate(), errno: %d", errno)); |
1e5118fa0cb1
This is NSS with a Cmake Buildsyste
Andre Heinecke <andre.heinecke@intevation.de>
parents:
diff
changeset
|
563 PR_Close( fd ); |
1e5118fa0cb1
This is NSS with a Cmake Buildsyste
Andre Heinecke <andre.heinecke@intevation.de>
parents:
diff
changeset
|
564 goto Finished; |
1e5118fa0cb1
This is NSS with a Cmake Buildsyste
Andre Heinecke <andre.heinecke@intevation.de>
parents:
diff
changeset
|
565 } |
1e5118fa0cb1
This is NSS with a Cmake Buildsyste
Andre Heinecke <andre.heinecke@intevation.de>
parents:
diff
changeset
|
566 PR_LOG( _pr_shma_lm, PR_LOG_DEBUG, |
1e5118fa0cb1
This is NSS with a Cmake Buildsyste
Andre Heinecke <andre.heinecke@intevation.de>
parents:
diff
changeset
|
567 ("_md_OpenAnonFileMap(): ftruncate(): size: %d", size )); |
1e5118fa0cb1
This is NSS with a Cmake Buildsyste
Andre Heinecke <andre.heinecke@intevation.de>
parents:
diff
changeset
|
568 |
1e5118fa0cb1
This is NSS with a Cmake Buildsyste
Andre Heinecke <andre.heinecke@intevation.de>
parents:
diff
changeset
|
569 LL_UI2L(size64, size); /* PRSize (size_t) is unsigned */ |
1e5118fa0cb1
This is NSS with a Cmake Buildsyste
Andre Heinecke <andre.heinecke@intevation.de>
parents:
diff
changeset
|
570 fm = PR_CreateFileMap( fd, size64, prot ); |
1e5118fa0cb1
This is NSS with a Cmake Buildsyste
Andre Heinecke <andre.heinecke@intevation.de>
parents:
diff
changeset
|
571 if ( NULL == fm ) { |
1e5118fa0cb1
This is NSS with a Cmake Buildsyste
Andre Heinecke <andre.heinecke@intevation.de>
parents:
diff
changeset
|
572 PR_LOG( _pr_shma_lm, PR_LOG_DEBUG, |
1e5118fa0cb1
This is NSS with a Cmake Buildsyste
Andre Heinecke <andre.heinecke@intevation.de>
parents:
diff
changeset
|
573 ("PR_OpenAnonFileMap(): failed")); |
1e5118fa0cb1
This is NSS with a Cmake Buildsyste
Andre Heinecke <andre.heinecke@intevation.de>
parents:
diff
changeset
|
574 PR_Close( fd ); |
1e5118fa0cb1
This is NSS with a Cmake Buildsyste
Andre Heinecke <andre.heinecke@intevation.de>
parents:
diff
changeset
|
575 goto Finished; |
1e5118fa0cb1
This is NSS with a Cmake Buildsyste
Andre Heinecke <andre.heinecke@intevation.de>
parents:
diff
changeset
|
576 } |
1e5118fa0cb1
This is NSS with a Cmake Buildsyste
Andre Heinecke <andre.heinecke@intevation.de>
parents:
diff
changeset
|
577 fm->md.isAnonFM = PR_TRUE; /* set fd close */ |
1e5118fa0cb1
This is NSS with a Cmake Buildsyste
Andre Heinecke <andre.heinecke@intevation.de>
parents:
diff
changeset
|
578 |
1e5118fa0cb1
This is NSS with a Cmake Buildsyste
Andre Heinecke <andre.heinecke@intevation.de>
parents:
diff
changeset
|
579 PR_LOG( _pr_shma_lm, PR_LOG_DEBUG, |
1e5118fa0cb1
This is NSS with a Cmake Buildsyste
Andre Heinecke <andre.heinecke@intevation.de>
parents:
diff
changeset
|
580 ("_md_OpenAnonFileMap(): PR_CreateFileMap(): fm: %p", fm )); |
1e5118fa0cb1
This is NSS with a Cmake Buildsyste
Andre Heinecke <andre.heinecke@intevation.de>
parents:
diff
changeset
|
581 |
1e5118fa0cb1
This is NSS with a Cmake Buildsyste
Andre Heinecke <andre.heinecke@intevation.de>
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582 Finished: |
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583 return(fm); |
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584 } /* end md_OpenAnonFileMap() */ |
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585 |
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586 /* |
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587 ** _md_ExportFileMapAsString() |
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588 ** |
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589 ** |
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590 */ |
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591 extern PRStatus _md_ExportFileMapAsString( |
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592 PRFileMap *fm, |
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593 PRSize bufSize, |
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594 char *buf |
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595 ) |
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596 { |
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597 PRIntn written; |
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598 PRIntn prot = (PRIntn)fm->prot; |
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599 |
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600 written = PR_snprintf( buf, bufSize, "%ld:%d", |
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601 fm->fd->secret->md.osfd, prot ); |
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602 |
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603 return((written == -1)? PR_FAILURE : PR_SUCCESS); |
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604 } /* end _md_ExportFileMapAsString() */ |
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605 |
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606 |
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607 extern PRFileMap * _md_ImportFileMapFromString( |
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608 const char *fmstring |
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609 ) |
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610 { |
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611 PRStatus rc; |
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612 PRInt32 osfd; |
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613 PRIntn prot; /* really: a PRFileMapProtect */ |
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614 PRFileDesc *fd; |
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615 PRFileMap *fm = NULL; /* default return value */ |
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616 PRFileInfo64 info; |
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617 |
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618 PR_sscanf( fmstring, "%ld:%d", &osfd, &prot ); |
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619 |
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620 /* import the os file descriptor */ |
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621 fd = PR_ImportFile( osfd ); |
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622 if ( NULL == fd ) { |
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623 PR_LOG( _pr_shma_lm, PR_LOG_DEBUG, |
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624 ("_md_ImportFileMapFromString(): PR_ImportFile() failed")); |
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625 goto Finished; |
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626 } |
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627 |
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628 rc = PR_GetOpenFileInfo64( fd, &info ); |
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629 if ( PR_FAILURE == rc ) { |
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630 PR_LOG( _pr_shma_lm, PR_LOG_DEBUG, |
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631 ("_md_ImportFileMapFromString(): PR_GetOpenFileInfo64() failed")); |
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632 goto Finished; |
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633 } |
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634 |
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635 fm = PR_CreateFileMap( fd, info.size, (PRFileMapProtect)prot ); |
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636 if ( NULL == fm ) { |
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637 PR_LOG( _pr_shma_lm, PR_LOG_DEBUG, |
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638 ("_md_ImportFileMapFromString(): PR_CreateFileMap() failed")); |
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639 } |
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640 |
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641 Finished: |
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642 return(fm); |
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643 } /* end _md_ImportFileMapFromString() */ |