1 | /* |
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2 | * tclFCmd.c |
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3 | * |
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4 | * This file implements the generic portion of file manipulation |
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5 | * subcommands of the "file" command. |
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6 | * |
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7 | * Copyright (c) 1996-1998 Sun Microsystems, Inc. |
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8 | * |
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9 | * See the file "license.terms" for information on usage and redistribution of |
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10 | * this file, and for a DISCLAIMER OF ALL WARRANTIES. |
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11 | * |
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12 | * RCS: @(#) $Id: tclFCmd.c,v 1.43 2007/12/13 15:23:17 dgp Exp $ |
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13 | */ |
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14 | |
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15 | #include "tclInt.h" |
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16 | |
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17 | /* |
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18 | * Declarations for local functions defined in this file: |
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19 | */ |
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20 | |
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21 | static int CopyRenameOneFile(Tcl_Interp *interp, |
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22 | Tcl_Obj *srcPathPtr, Tcl_Obj *destPathPtr, |
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23 | int copyFlag, int force); |
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24 | static Tcl_Obj * FileBasename(Tcl_Interp *interp, Tcl_Obj *pathPtr); |
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25 | static int FileCopyRename(Tcl_Interp *interp, |
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26 | int objc, Tcl_Obj *CONST objv[], int copyFlag); |
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27 | static int FileForceOption(Tcl_Interp *interp, |
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28 | int objc, Tcl_Obj *CONST objv[], int *forcePtr); |
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29 | |
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30 | /* |
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31 | *--------------------------------------------------------------------------- |
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32 | * |
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33 | * TclFileRenameCmd |
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34 | * |
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35 | * This function implements the "rename" subcommand of the "file" |
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36 | * command. Filename arguments need to be translated to native format |
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37 | * before being passed to platform-specific code that implements rename |
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38 | * functionality. |
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39 | * |
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40 | * Results: |
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41 | * A standard Tcl result. |
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42 | * |
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43 | * Side effects: |
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44 | * See the user documentation. |
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45 | * |
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46 | *--------------------------------------------------------------------------- |
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47 | */ |
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48 | |
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49 | int |
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50 | TclFileRenameCmd( |
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51 | Tcl_Interp *interp, /* Interp for error reporting or recursive |
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52 | * calls in the case of a tricky rename. */ |
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53 | int objc, /* Number of arguments. */ |
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54 | Tcl_Obj *CONST objv[]) /* Argument strings passed to Tcl_FileCmd. */ |
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55 | { |
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56 | return FileCopyRename(interp, objc, objv, 0); |
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57 | } |
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58 | |
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59 | /* |
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60 | *--------------------------------------------------------------------------- |
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61 | * |
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62 | * TclFileCopyCmd |
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63 | * |
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64 | * This function implements the "copy" subcommand of the "file" command. |
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65 | * Filename arguments need to be translated to native format before being |
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66 | * passed to platform-specific code that implements copy functionality. |
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67 | * |
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68 | * Results: |
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69 | * A standard Tcl result. |
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70 | * |
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71 | * Side effects: |
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72 | * See the user documentation. |
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73 | * |
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74 | *--------------------------------------------------------------------------- |
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75 | */ |
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76 | |
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77 | int |
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78 | TclFileCopyCmd( |
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79 | Tcl_Interp *interp, /* Used for error reporting or recursive calls |
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80 | * in the case of a tricky copy. */ |
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81 | int objc, /* Number of arguments. */ |
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82 | Tcl_Obj *CONST objv[]) /* Argument strings passed to Tcl_FileCmd. */ |
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83 | { |
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84 | return FileCopyRename(interp, objc, objv, 1); |
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85 | } |
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86 | |
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87 | /* |
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88 | *--------------------------------------------------------------------------- |
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89 | * |
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90 | * FileCopyRename -- |
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91 | * |
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92 | * Performs the work of TclFileRenameCmd and TclFileCopyCmd. See |
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93 | * comments for those functions. |
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94 | * |
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95 | * Results: |
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96 | * See above. |
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97 | * |
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98 | * Side effects: |
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99 | * See above. |
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100 | * |
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101 | *--------------------------------------------------------------------------- |
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102 | */ |
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103 | |
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104 | static int |
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105 | FileCopyRename( |
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106 | Tcl_Interp *interp, /* Used for error reporting. */ |
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107 | int objc, /* Number of arguments. */ |
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108 | Tcl_Obj *CONST objv[], /* Argument strings passed to Tcl_FileCmd. */ |
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109 | int copyFlag) /* If non-zero, copy source(s). Otherwise, |
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110 | * rename them. */ |
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111 | { |
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112 | int i, result, force; |
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113 | Tcl_StatBuf statBuf; |
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114 | Tcl_Obj *target; |
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115 | |
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116 | i = FileForceOption(interp, objc - 2, objv + 2, &force); |
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117 | if (i < 0) { |
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118 | return TCL_ERROR; |
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119 | } |
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120 | i += 2; |
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121 | if ((objc - i) < 2) { |
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122 | Tcl_AppendResult(interp, "wrong # args: should be \"", |
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123 | TclGetString(objv[0]), " ", TclGetString(objv[1]), |
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124 | " ?options? source ?source ...? target\"", NULL); |
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125 | return TCL_ERROR; |
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126 | } |
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127 | |
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128 | /* |
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129 | * If target doesn't exist or isn't a directory, try the copy/rename. |
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130 | * More than 2 arguments is only valid if the target is an existing |
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131 | * directory. |
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132 | */ |
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133 | |
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134 | target = objv[objc - 1]; |
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135 | if (Tcl_FSConvertToPathType(interp, target) != TCL_OK) { |
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136 | return TCL_ERROR; |
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137 | } |
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138 | |
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139 | result = TCL_OK; |
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140 | |
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141 | /* |
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142 | * Call Tcl_FSStat() so that if target is a symlink that points to a |
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143 | * directory we will put the sources in that directory instead of |
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144 | * overwriting the symlink. |
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145 | */ |
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146 | |
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147 | if ((Tcl_FSStat(target, &statBuf) != 0) || !S_ISDIR(statBuf.st_mode)) { |
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148 | if ((objc - i) > 2) { |
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149 | errno = ENOTDIR; |
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150 | Tcl_PosixError(interp); |
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151 | Tcl_AppendResult(interp, "error ", |
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152 | (copyFlag ? "copying" : "renaming"), ": target \"", |
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153 | TclGetString(target), "\" is not a directory", NULL); |
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154 | result = TCL_ERROR; |
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155 | } else { |
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156 | /* |
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157 | * Even though already have target == translated(objv[i+1]), pass |
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158 | * the original argument down, so if there's an error, the error |
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159 | * message will reflect the original arguments. |
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160 | */ |
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161 | |
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162 | result = CopyRenameOneFile(interp, objv[i], objv[i + 1], copyFlag, |
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163 | force); |
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164 | } |
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165 | return result; |
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166 | } |
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167 | |
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168 | /* |
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169 | * Move each source file into target directory. Extract the basename from |
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170 | * each source, and append it to the end of the target path. |
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171 | */ |
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172 | |
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173 | for ( ; i<objc-1 ; i++) { |
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174 | Tcl_Obj *jargv[2]; |
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175 | Tcl_Obj *source, *newFileName; |
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176 | Tcl_Obj *temp; |
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177 | |
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178 | source = FileBasename(interp, objv[i]); |
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179 | if (source == NULL) { |
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180 | result = TCL_ERROR; |
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181 | break; |
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182 | } |
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183 | jargv[0] = objv[objc - 1]; |
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184 | jargv[1] = source; |
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185 | temp = Tcl_NewListObj(2, jargv); |
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186 | newFileName = Tcl_FSJoinPath(temp, -1); |
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187 | Tcl_IncrRefCount(newFileName); |
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188 | result = CopyRenameOneFile(interp, objv[i], newFileName, copyFlag, |
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189 | force); |
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190 | Tcl_DecrRefCount(newFileName); |
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191 | Tcl_DecrRefCount(temp); |
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192 | Tcl_DecrRefCount(source); |
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193 | |
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194 | if (result == TCL_ERROR) { |
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195 | break; |
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196 | } |
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197 | } |
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198 | return result; |
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199 | } |
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200 | |
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201 | /* |
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202 | *--------------------------------------------------------------------------- |
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203 | * |
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204 | * TclFileMakeDirsCmd |
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205 | * |
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206 | * This function implements the "mkdir" subcommand of the "file" command. |
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207 | * Filename arguments need to be translated to native format before being |
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208 | * passed to platform-specific code that implements mkdir functionality. |
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209 | * |
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210 | * Results: |
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211 | * A standard Tcl result. |
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212 | * |
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213 | * Side effects: |
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214 | * See the user documentation. |
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215 | * |
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216 | *---------------------------------------------------------------------- |
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217 | */ |
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218 | |
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219 | int |
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220 | TclFileMakeDirsCmd( |
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221 | Tcl_Interp *interp, /* Used for error reporting. */ |
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222 | int objc, /* Number of arguments */ |
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223 | Tcl_Obj *CONST objv[]) /* Argument strings passed to Tcl_FileCmd. */ |
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224 | { |
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225 | Tcl_Obj *errfile; |
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226 | int result, i, j, pobjc; |
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227 | Tcl_Obj *split = NULL; |
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228 | Tcl_Obj *target = NULL; |
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229 | Tcl_StatBuf statBuf; |
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230 | |
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231 | errfile = NULL; |
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232 | |
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233 | result = TCL_OK; |
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234 | for (i = 2; i < objc; i++) { |
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235 | if (Tcl_FSConvertToPathType(interp, objv[i]) != TCL_OK) { |
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236 | result = TCL_ERROR; |
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237 | break; |
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238 | } |
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239 | |
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240 | split = Tcl_FSSplitPath(objv[i],&pobjc); |
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241 | Tcl_IncrRefCount(split); |
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242 | if (pobjc == 0) { |
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243 | errno = ENOENT; |
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244 | errfile = objv[i]; |
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245 | break; |
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246 | } |
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247 | for (j = 0; j < pobjc; j++) { |
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248 | target = Tcl_FSJoinPath(split, j + 1); |
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249 | Tcl_IncrRefCount(target); |
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250 | |
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251 | /* |
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252 | * Call Tcl_FSStat() so that if target is a symlink that points to |
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253 | * a directory we will create subdirectories in that directory. |
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254 | */ |
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255 | |
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256 | if (Tcl_FSStat(target, &statBuf) == 0) { |
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257 | if (!S_ISDIR(statBuf.st_mode)) { |
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258 | errno = EEXIST; |
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259 | errfile = target; |
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260 | goto done; |
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261 | } |
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262 | } else if (errno != ENOENT) { |
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263 | /* |
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264 | * If Tcl_FSStat() failed and the error is anything other than |
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265 | * non-existence of the target, throw the error. |
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266 | */ |
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267 | |
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268 | errfile = target; |
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269 | goto done; |
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270 | } else if (Tcl_FSCreateDirectory(target) != TCL_OK) { |
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271 | /* |
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272 | * Create might have failed because of being in a race |
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273 | * condition with another process trying to create the same |
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274 | * subdirectory. |
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275 | */ |
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276 | |
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277 | if (errno == EEXIST) { |
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278 | if ((Tcl_FSStat(target, &statBuf) == 0) |
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279 | && S_ISDIR(statBuf.st_mode)) { |
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280 | /* |
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281 | * It is a directory that wasn't there before, so keep |
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282 | * going without error. |
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283 | */ |
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284 | |
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285 | Tcl_ResetResult(interp); |
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286 | } else { |
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287 | errfile = target; |
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288 | goto done; |
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289 | } |
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290 | } else { |
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291 | errfile = target; |
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292 | goto done; |
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293 | } |
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294 | } |
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295 | |
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296 | /* |
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297 | * Forget about this sub-path. |
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298 | */ |
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299 | |
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300 | Tcl_DecrRefCount(target); |
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301 | target = NULL; |
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302 | } |
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303 | Tcl_DecrRefCount(split); |
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304 | split = NULL; |
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305 | } |
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306 | |
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307 | done: |
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308 | if (errfile != NULL) { |
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309 | Tcl_AppendResult(interp, "can't create directory \"", |
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310 | TclGetString(errfile), "\": ", Tcl_PosixError(interp), NULL); |
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311 | result = TCL_ERROR; |
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312 | } |
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313 | if (split != NULL) { |
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314 | Tcl_DecrRefCount(split); |
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315 | } |
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316 | if (target != NULL) { |
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317 | Tcl_DecrRefCount(target); |
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318 | } |
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319 | return result; |
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320 | } |
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321 | |
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322 | /* |
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323 | *---------------------------------------------------------------------- |
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324 | * |
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325 | * TclFileDeleteCmd |
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326 | * |
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327 | * This function implements the "delete" subcommand of the "file" |
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328 | * command. |
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329 | * |
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330 | * Results: |
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331 | * A standard Tcl result. |
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332 | * |
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333 | * Side effects: |
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334 | * See the user documentation. |
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335 | * |
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336 | *---------------------------------------------------------------------- |
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337 | */ |
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338 | |
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339 | int |
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340 | TclFileDeleteCmd( |
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341 | Tcl_Interp *interp, /* Used for error reporting */ |
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342 | int objc, /* Number of arguments */ |
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343 | Tcl_Obj *CONST objv[]) /* Argument strings passed to Tcl_FileCmd. */ |
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344 | { |
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345 | int i, force, result; |
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346 | Tcl_Obj *errfile; |
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347 | Tcl_Obj *errorBuffer = NULL; |
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348 | |
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349 | i = FileForceOption(interp, objc - 2, objv + 2, &force); |
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350 | if (i < 0) { |
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351 | return TCL_ERROR; |
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352 | } |
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353 | i += 2; |
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354 | if ((objc - i) < 1) { |
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355 | Tcl_AppendResult(interp, "wrong # args: should be \"", |
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356 | TclGetString(objv[0]), " ", TclGetString(objv[1]), |
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357 | " ?options? file ?file ...?\"", NULL); |
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358 | return TCL_ERROR; |
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359 | } |
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360 | |
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361 | errfile = NULL; |
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362 | result = TCL_OK; |
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363 | |
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364 | for ( ; i < objc; i++) { |
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365 | Tcl_StatBuf statBuf; |
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366 | |
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367 | errfile = objv[i]; |
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368 | if (Tcl_FSConvertToPathType(interp, objv[i]) != TCL_OK) { |
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369 | result = TCL_ERROR; |
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370 | goto done; |
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371 | } |
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372 | |
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373 | /* |
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374 | * Call lstat() to get info so can delete symbolic link itself. |
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375 | */ |
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376 | |
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377 | if (Tcl_FSLstat(objv[i], &statBuf) != 0) { |
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378 | /* |
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379 | * Trying to delete a file that does not exist is not considered |
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380 | * an error, just a no-op |
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381 | */ |
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382 | |
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383 | if (errno != ENOENT) { |
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384 | result = TCL_ERROR; |
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385 | } |
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386 | } else if (S_ISDIR(statBuf.st_mode)) { |
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387 | /* |
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388 | * We own a reference count on errorBuffer, if it was set as a |
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389 | * result of this call. |
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390 | */ |
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391 | |
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392 | result = Tcl_FSRemoveDirectory(objv[i], force, &errorBuffer); |
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393 | if (result != TCL_OK) { |
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394 | if ((force == 0) && (errno == EEXIST)) { |
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395 | Tcl_AppendResult(interp, "error deleting \"", |
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396 | TclGetString(objv[i]), "\": directory not empty", |
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397 | NULL); |
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398 | Tcl_PosixError(interp); |
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399 | goto done; |
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400 | } |
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401 | |
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402 | /* |
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403 | * If possible, use the untranslated name for the file. |
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404 | */ |
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405 | |
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406 | errfile = errorBuffer; |
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407 | |
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408 | /* |
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409 | * FS supposed to check between translated objv and errfile. |
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410 | */ |
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411 | |
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412 | if (Tcl_FSEqualPaths(objv[i], errfile)) { |
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413 | errfile = objv[i]; |
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414 | } |
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415 | } |
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416 | } else { |
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417 | result = Tcl_FSDeleteFile(objv[i]); |
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418 | } |
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419 | |
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420 | if (result != TCL_OK) { |
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421 | result = TCL_ERROR; |
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422 | |
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423 | /* |
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424 | * It is important that we break on error, otherwise we might end |
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425 | * up owning reference counts on numerous errorBuffers. |
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426 | */ |
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427 | |
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428 | break; |
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429 | } |
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430 | } |
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431 | if (result != TCL_OK) { |
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432 | if (errfile == NULL) { |
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433 | /* |
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434 | * We try to accomodate poor error results from our Tcl_FS calls. |
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435 | */ |
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436 | |
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437 | Tcl_AppendResult(interp, "error deleting unknown file: ", |
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438 | Tcl_PosixError(interp), NULL); |
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439 | } else { |
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440 | Tcl_AppendResult(interp, "error deleting \"", |
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441 | TclGetString(errfile), "\": ", Tcl_PosixError(interp), |
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442 | NULL); |
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443 | } |
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444 | } |
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445 | |
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446 | done: |
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447 | if (errorBuffer != NULL) { |
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448 | Tcl_DecrRefCount(errorBuffer); |
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449 | } |
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450 | return result; |
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451 | } |
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452 | |
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453 | /* |
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454 | *--------------------------------------------------------------------------- |
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455 | * |
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456 | * CopyRenameOneFile |
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457 | * |
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458 | * Copies or renames specified source file or directory hierarchy to the |
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459 | * specified target. |
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460 | * |
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461 | * Results: |
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462 | * A standard Tcl result. |
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463 | * |
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464 | * Side effects: |
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465 | * Target is overwritten if the force flag is set. Attempting to |
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466 | * copy/rename a file onto a directory or a directory onto a file will |
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467 | * always result in an error. |
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468 | * |
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469 | *---------------------------------------------------------------------- |
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470 | */ |
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471 | |
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472 | static int |
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473 | CopyRenameOneFile( |
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474 | Tcl_Interp *interp, /* Used for error reporting. */ |
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475 | Tcl_Obj *source, /* Pathname of file to copy. May need to be |
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476 | * translated. */ |
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477 | Tcl_Obj *target, /* Pathname of file to create/overwrite. May |
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478 | * need to be translated. */ |
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479 | int copyFlag, /* If non-zero, copy files. Otherwise, rename |
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480 | * them. */ |
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481 | int force) /* If non-zero, overwrite target file if it |
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482 | * exists. Otherwise, error if target already |
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483 | * exists. */ |
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484 | { |
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485 | int result; |
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486 | Tcl_Obj *errfile, *errorBuffer; |
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487 | Tcl_Obj *actualSource=NULL; /* If source is a link, then this is the real |
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488 | * file/directory. */ |
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489 | Tcl_StatBuf sourceStatBuf, targetStatBuf; |
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490 | |
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491 | if (Tcl_FSConvertToPathType(interp, source) != TCL_OK) { |
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492 | return TCL_ERROR; |
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493 | } |
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494 | if (Tcl_FSConvertToPathType(interp, target) != TCL_OK) { |
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495 | return TCL_ERROR; |
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496 | } |
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497 | |
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498 | errfile = NULL; |
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499 | errorBuffer = NULL; |
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500 | result = TCL_ERROR; |
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501 | |
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502 | /* |
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503 | * We want to copy/rename links and not the files they point to, so we use |
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504 | * lstat(). If target is a link, we also want to replace the link and not |
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505 | * the file it points to, so we also use lstat() on the target. |
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506 | */ |
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507 | |
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508 | if (Tcl_FSLstat(source, &sourceStatBuf) != 0) { |
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509 | errfile = source; |
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510 | goto done; |
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511 | } |
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512 | if (Tcl_FSLstat(target, &targetStatBuf) != 0) { |
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513 | if (errno != ENOENT) { |
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514 | errfile = target; |
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515 | goto done; |
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516 | } |
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517 | } else { |
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518 | if (force == 0) { |
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519 | errno = EEXIST; |
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520 | errfile = target; |
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521 | goto done; |
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522 | } |
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523 | |
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524 | /* |
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525 | * Prevent copying or renaming a file onto itself. Under Windows, stat |
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526 | * always returns 0 for st_ino. However, the Windows-specific code |
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527 | * knows how to deal with copying or renaming a file on top of itself. |
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528 | * It might be a good idea to write a stat that worked. |
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529 | */ |
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530 | |
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531 | if ((sourceStatBuf.st_ino != 0) && (targetStatBuf.st_ino != 0)) { |
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532 | if ((sourceStatBuf.st_ino == targetStatBuf.st_ino) && |
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533 | (sourceStatBuf.st_dev == targetStatBuf.st_dev)) { |
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534 | result = TCL_OK; |
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535 | goto done; |
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536 | } |
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537 | } |
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538 | |
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539 | /* |
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540 | * Prevent copying/renaming a file onto a directory and vice-versa. |
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541 | * This is a policy decision based on the fact that existing |
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542 | * implementations of copy and rename on all platforms also prevent |
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543 | * this. |
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544 | */ |
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545 | |
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546 | if (S_ISDIR(sourceStatBuf.st_mode) |
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547 | && !S_ISDIR(targetStatBuf.st_mode)) { |
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548 | errno = EISDIR; |
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549 | Tcl_AppendResult(interp, "can't overwrite file \"", |
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550 | TclGetString(target), "\" with directory \"", |
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551 | TclGetString(source), "\"", NULL); |
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552 | goto done; |
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553 | } |
---|
554 | if (!S_ISDIR(sourceStatBuf.st_mode) |
---|
555 | && S_ISDIR(targetStatBuf.st_mode)) { |
---|
556 | errno = EISDIR; |
---|
557 | Tcl_AppendResult(interp, "can't overwrite directory \"", |
---|
558 | TclGetString(target), "\" with file \"", |
---|
559 | TclGetString(source), "\"", NULL); |
---|
560 | goto done; |
---|
561 | } |
---|
562 | |
---|
563 | /* |
---|
564 | * The destination exists, but appears to be ok to over-write, and |
---|
565 | * -force is given. We now try to adjust permissions to ensure the |
---|
566 | * operation succeeds. If we can't adjust permissions, we'll let the |
---|
567 | * actual copy/rename return an error later. |
---|
568 | */ |
---|
569 | |
---|
570 | { |
---|
571 | Tcl_Obj *perm; |
---|
572 | int index; |
---|
573 | |
---|
574 | TclNewLiteralStringObj(perm, "u+w"); |
---|
575 | Tcl_IncrRefCount(perm); |
---|
576 | if (TclFSFileAttrIndex(target, "-permissions", &index) == TCL_OK) { |
---|
577 | Tcl_FSFileAttrsSet(NULL, index, target, perm); |
---|
578 | } |
---|
579 | Tcl_DecrRefCount(perm); |
---|
580 | } |
---|
581 | } |
---|
582 | |
---|
583 | if (copyFlag == 0) { |
---|
584 | result = Tcl_FSRenameFile(source, target); |
---|
585 | if (result == TCL_OK) { |
---|
586 | goto done; |
---|
587 | } |
---|
588 | |
---|
589 | if (errno == EINVAL) { |
---|
590 | Tcl_AppendResult(interp, "error renaming \"", |
---|
591 | TclGetString(source), "\" to \"", TclGetString(target), |
---|
592 | "\": trying to rename a volume or " |
---|
593 | "move a directory into itself", NULL); |
---|
594 | goto done; |
---|
595 | } else if (errno != EXDEV) { |
---|
596 | errfile = target; |
---|
597 | goto done; |
---|
598 | } |
---|
599 | |
---|
600 | /* |
---|
601 | * The rename failed because the move was across file systems. Fall |
---|
602 | * through to copy file and then remove original. Note that the |
---|
603 | * low-level Tcl_FSRenameFileProc in the filesystem is allowed to |
---|
604 | * implement cross-filesystem moves itself, if it desires. |
---|
605 | */ |
---|
606 | } |
---|
607 | |
---|
608 | actualSource = source; |
---|
609 | Tcl_IncrRefCount(actualSource); |
---|
610 | |
---|
611 | /* |
---|
612 | * Activate the following block to copy files instead of links. However |
---|
613 | * Tcl's semantics currently say we should copy links, so any such change |
---|
614 | * should be the subject of careful study on the consequences. |
---|
615 | * |
---|
616 | * Perhaps there could be an optional flag to 'file copy' to dictate which |
---|
617 | * approach to use, with the default being _not_ to have this block |
---|
618 | * active. |
---|
619 | */ |
---|
620 | |
---|
621 | #if 0 |
---|
622 | #ifdef S_ISLNK |
---|
623 | if (copyFlag && S_ISLNK(sourceStatBuf.st_mode)) { |
---|
624 | /* |
---|
625 | * We want to copy files not links. Therefore we must follow the link. |
---|
626 | * There are two purposes to this 'stat' call here. First we want to |
---|
627 | * know if the linked-file/dir actually exists, and second, in the |
---|
628 | * block of code which follows, some 20 lines down, we want to check |
---|
629 | * if the thing is a file or directory. |
---|
630 | */ |
---|
631 | |
---|
632 | if (Tcl_FSStat(source, &sourceStatBuf) != 0) { |
---|
633 | /* |
---|
634 | * Actual file doesn't exist. |
---|
635 | */ |
---|
636 | |
---|
637 | Tcl_AppendResult(interp, "error copying \"", TclGetString(source), |
---|
638 | "\": the target of this link doesn't exist", NULL); |
---|
639 | goto done; |
---|
640 | } else { |
---|
641 | int counter = 0; |
---|
642 | |
---|
643 | while (1) { |
---|
644 | Tcl_Obj *path = Tcl_FSLink(actualSource, NULL, 0); |
---|
645 | if (path == NULL) { |
---|
646 | break; |
---|
647 | } |
---|
648 | |
---|
649 | /* |
---|
650 | * Now we want to check if this is a relative path, and if so, |
---|
651 | * to make it absolute. |
---|
652 | */ |
---|
653 | |
---|
654 | if (Tcl_FSGetPathType(path) == TCL_PATH_RELATIVE) { |
---|
655 | Tcl_Obj *abs = Tcl_FSJoinToPath(actualSource, 1, &path); |
---|
656 | |
---|
657 | if (abs == NULL) { |
---|
658 | break; |
---|
659 | } |
---|
660 | Tcl_IncrRefCount(abs); |
---|
661 | Tcl_DecrRefCount(path); |
---|
662 | path = abs; |
---|
663 | } |
---|
664 | Tcl_DecrRefCount(actualSource); |
---|
665 | actualSource = path; |
---|
666 | counter++; |
---|
667 | |
---|
668 | /* |
---|
669 | * Arbitrary limit of 20 links to follow. |
---|
670 | */ |
---|
671 | |
---|
672 | if (counter > 20) { |
---|
673 | /* |
---|
674 | * Too many links. |
---|
675 | */ |
---|
676 | |
---|
677 | Tcl_SetErrno(EMLINK); |
---|
678 | errfile = source; |
---|
679 | goto done; |
---|
680 | } |
---|
681 | } |
---|
682 | /* Now 'actualSource' is the correct file */ |
---|
683 | } |
---|
684 | } |
---|
685 | #endif /* S_ISLNK */ |
---|
686 | #endif |
---|
687 | |
---|
688 | if (S_ISDIR(sourceStatBuf.st_mode)) { |
---|
689 | result = Tcl_FSCopyDirectory(actualSource, target, &errorBuffer); |
---|
690 | if (result != TCL_OK) { |
---|
691 | if (errno == EXDEV) { |
---|
692 | /* |
---|
693 | * The copy failed because we're trying to do a |
---|
694 | * cross-filesystem copy. We do this through our Tcl library. |
---|
695 | */ |
---|
696 | |
---|
697 | Tcl_Obj *copyCommand, *cmdObj, *opObj; |
---|
698 | |
---|
699 | TclNewObj(copyCommand); |
---|
700 | TclNewLiteralStringObj(cmdObj, "::tcl::CopyDirectory"); |
---|
701 | Tcl_ListObjAppendElement(interp, copyCommand, cmdObj); |
---|
702 | if (copyFlag) { |
---|
703 | TclNewLiteralStringObj(opObj, "copying"); |
---|
704 | } else { |
---|
705 | TclNewLiteralStringObj(opObj, "renaming"); |
---|
706 | } |
---|
707 | Tcl_ListObjAppendElement(interp, copyCommand, opObj); |
---|
708 | Tcl_ListObjAppendElement(interp, copyCommand, source); |
---|
709 | Tcl_ListObjAppendElement(interp, copyCommand, target); |
---|
710 | Tcl_IncrRefCount(copyCommand); |
---|
711 | result = Tcl_EvalObjEx(interp, copyCommand, |
---|
712 | TCL_EVAL_GLOBAL | TCL_EVAL_DIRECT); |
---|
713 | Tcl_DecrRefCount(copyCommand); |
---|
714 | if (result != TCL_OK) { |
---|
715 | /* |
---|
716 | * There was an error in the Tcl-level copy. We will pass |
---|
717 | * on the Tcl error message and can ensure this by setting |
---|
718 | * errfile to NULL |
---|
719 | */ |
---|
720 | |
---|
721 | errfile = NULL; |
---|
722 | } |
---|
723 | } else { |
---|
724 | errfile = errorBuffer; |
---|
725 | if (Tcl_FSEqualPaths(errfile, source)) { |
---|
726 | errfile = source; |
---|
727 | } else if (Tcl_FSEqualPaths(errfile, target)) { |
---|
728 | errfile = target; |
---|
729 | } |
---|
730 | } |
---|
731 | } |
---|
732 | } else { |
---|
733 | result = Tcl_FSCopyFile(actualSource, target); |
---|
734 | if ((result != TCL_OK) && (errno == EXDEV)) { |
---|
735 | result = TclCrossFilesystemCopy(interp, source, target); |
---|
736 | } |
---|
737 | if (result != TCL_OK) { |
---|
738 | /* |
---|
739 | * We could examine 'errno' to double-check if the problem was |
---|
740 | * with the target, but we checked the source above, so it should |
---|
741 | * be quite clear |
---|
742 | */ |
---|
743 | |
---|
744 | errfile = target; |
---|
745 | |
---|
746 | /* |
---|
747 | * We now need to reset the result, because the above call, if it |
---|
748 | * failed, may have put an error message in place. (Ideally we |
---|
749 | * would prefer not to pass an interpreter in above, but the |
---|
750 | * channel IO code used by TclCrossFilesystemCopy currently |
---|
751 | * requires one). |
---|
752 | */ |
---|
753 | |
---|
754 | Tcl_ResetResult(interp); |
---|
755 | } |
---|
756 | } |
---|
757 | if ((copyFlag == 0) && (result == TCL_OK)) { |
---|
758 | if (S_ISDIR(sourceStatBuf.st_mode)) { |
---|
759 | result = Tcl_FSRemoveDirectory(source, 1, &errorBuffer); |
---|
760 | if (result != TCL_OK) { |
---|
761 | if (Tcl_FSEqualPaths(errfile, source) == 0) { |
---|
762 | errfile = source; |
---|
763 | } |
---|
764 | } |
---|
765 | } else { |
---|
766 | result = Tcl_FSDeleteFile(source); |
---|
767 | if (result != TCL_OK) { |
---|
768 | errfile = source; |
---|
769 | } |
---|
770 | } |
---|
771 | if (result != TCL_OK) { |
---|
772 | Tcl_AppendResult(interp, "can't unlink \"", TclGetString(errfile), |
---|
773 | "\": ", Tcl_PosixError(interp), NULL); |
---|
774 | errfile = NULL; |
---|
775 | } |
---|
776 | } |
---|
777 | |
---|
778 | done: |
---|
779 | if (errfile != NULL) { |
---|
780 | Tcl_AppendResult(interp, "error ", (copyFlag ? "copying" : "renaming"), |
---|
781 | " \"", TclGetString(source), NULL); |
---|
782 | if (errfile != source) { |
---|
783 | Tcl_AppendResult(interp, "\" to \"", TclGetString(target), NULL); |
---|
784 | if (errfile != target) { |
---|
785 | Tcl_AppendResult(interp, "\": \"", TclGetString(errfile),NULL); |
---|
786 | } |
---|
787 | } |
---|
788 | Tcl_AppendResult(interp, "\": ", Tcl_PosixError(interp), NULL); |
---|
789 | } |
---|
790 | if (errorBuffer != NULL) { |
---|
791 | Tcl_DecrRefCount(errorBuffer); |
---|
792 | } |
---|
793 | if (actualSource != NULL) { |
---|
794 | Tcl_DecrRefCount(actualSource); |
---|
795 | } |
---|
796 | return result; |
---|
797 | } |
---|
798 | |
---|
799 | /* |
---|
800 | *--------------------------------------------------------------------------- |
---|
801 | * |
---|
802 | * FileForceOption -- |
---|
803 | * |
---|
804 | * Helps parse command line options for file commands that take the |
---|
805 | * "-force" and "--" options. |
---|
806 | * |
---|
807 | * Results: |
---|
808 | * The return value is how many arguments from argv were consumed by this |
---|
809 | * function, or -1 if there was an error parsing the options. If an error |
---|
810 | * occurred, an error message is left in the interp's result. |
---|
811 | * |
---|
812 | * Side effects: |
---|
813 | * None. |
---|
814 | * |
---|
815 | *--------------------------------------------------------------------------- |
---|
816 | */ |
---|
817 | |
---|
818 | static int |
---|
819 | FileForceOption( |
---|
820 | Tcl_Interp *interp, /* Interp, for error return. */ |
---|
821 | int objc, /* Number of arguments. */ |
---|
822 | Tcl_Obj *CONST objv[], /* Argument strings. First command line |
---|
823 | * option, if it exists, begins at 0. */ |
---|
824 | int *forcePtr) /* If the "-force" was specified, *forcePtr is |
---|
825 | * filled with 1, otherwise with 0. */ |
---|
826 | { |
---|
827 | int force, i; |
---|
828 | |
---|
829 | force = 0; |
---|
830 | for (i = 0; i < objc; i++) { |
---|
831 | if (TclGetString(objv[i])[0] != '-') { |
---|
832 | break; |
---|
833 | } |
---|
834 | if (strcmp(TclGetString(objv[i]), "-force") == 0) { |
---|
835 | force = 1; |
---|
836 | } else if (strcmp(TclGetString(objv[i]), "--") == 0) { |
---|
837 | i++; |
---|
838 | break; |
---|
839 | } else { |
---|
840 | Tcl_AppendResult(interp, "bad option \"", TclGetString(objv[i]), |
---|
841 | "\": should be -force or --", NULL); |
---|
842 | return -1; |
---|
843 | } |
---|
844 | } |
---|
845 | *forcePtr = force; |
---|
846 | return i; |
---|
847 | } |
---|
848 | /* |
---|
849 | *--------------------------------------------------------------------------- |
---|
850 | * |
---|
851 | * FileBasename -- |
---|
852 | * |
---|
853 | * Given a path in either tcl format (with / separators), or in the |
---|
854 | * platform-specific format for the current platform, return all the |
---|
855 | * characters in the path after the last directory separator. But, if |
---|
856 | * path is the root directory, returns no characters. |
---|
857 | * |
---|
858 | * Results: |
---|
859 | * Returns the string object that represents the basename. If there is an |
---|
860 | * error, an error message is left in interp, and NULL is returned. |
---|
861 | * |
---|
862 | * Side effects: |
---|
863 | * None. |
---|
864 | * |
---|
865 | *--------------------------------------------------------------------------- |
---|
866 | */ |
---|
867 | |
---|
868 | static Tcl_Obj * |
---|
869 | FileBasename( |
---|
870 | Tcl_Interp *interp, /* Interp, for error return. */ |
---|
871 | Tcl_Obj *pathPtr) /* Path whose basename to extract. */ |
---|
872 | { |
---|
873 | int objc; |
---|
874 | Tcl_Obj *splitPtr; |
---|
875 | Tcl_Obj *resultPtr = NULL; |
---|
876 | |
---|
877 | splitPtr = Tcl_FSSplitPath(pathPtr, &objc); |
---|
878 | Tcl_IncrRefCount(splitPtr); |
---|
879 | |
---|
880 | if (objc != 0) { |
---|
881 | if ((objc == 1) && (*TclGetString(pathPtr) == '~')) { |
---|
882 | Tcl_DecrRefCount(splitPtr); |
---|
883 | if (Tcl_FSConvertToPathType(interp, pathPtr) != TCL_OK) { |
---|
884 | return NULL; |
---|
885 | } |
---|
886 | splitPtr = Tcl_FSSplitPath(pathPtr, &objc); |
---|
887 | Tcl_IncrRefCount(splitPtr); |
---|
888 | } |
---|
889 | |
---|
890 | /* |
---|
891 | * Return the last component, unless it is the only component, and it |
---|
892 | * is the root of an absolute path. |
---|
893 | */ |
---|
894 | |
---|
895 | if (objc > 0) { |
---|
896 | Tcl_ListObjIndex(NULL, splitPtr, objc-1, &resultPtr); |
---|
897 | if ((objc == 1) && |
---|
898 | (Tcl_FSGetPathType(resultPtr) != TCL_PATH_RELATIVE)) { |
---|
899 | resultPtr = NULL; |
---|
900 | } |
---|
901 | } |
---|
902 | } |
---|
903 | if (resultPtr == NULL) { |
---|
904 | resultPtr = Tcl_NewObj(); |
---|
905 | } |
---|
906 | Tcl_IncrRefCount(resultPtr); |
---|
907 | Tcl_DecrRefCount(splitPtr); |
---|
908 | return resultPtr; |
---|
909 | } |
---|
910 | |
---|
911 | /* |
---|
912 | *---------------------------------------------------------------------- |
---|
913 | * |
---|
914 | * TclFileAttrsCmd -- |
---|
915 | * |
---|
916 | * Sets or gets the platform-specific attributes of a file. The objc-objv |
---|
917 | * points to the file name with the rest of the command line following. |
---|
918 | * This routine uses platform-specific tables of option strings and |
---|
919 | * callbacks. The callback to get the attributes take three parameters: |
---|
920 | * Tcl_Interp *interp; The interp to report errors with. Since |
---|
921 | * this is an object-based API, the object |
---|
922 | * form of the result should be used. |
---|
923 | * CONST char *fileName; This is extracted using |
---|
924 | * Tcl_TranslateFileName. |
---|
925 | * TclObj **attrObjPtrPtr; A new object to hold the attribute is |
---|
926 | * allocated and put here. |
---|
927 | * The first two parameters of the callback used to write out the |
---|
928 | * attributes are the same. The third parameter is: |
---|
929 | * CONST *attrObjPtr; A pointer to the object that has the new |
---|
930 | * attribute. |
---|
931 | * They both return standard TCL errors; if the routine to get an |
---|
932 | * attribute fails, no object is allocated and *attrObjPtrPtr is |
---|
933 | * unchanged. |
---|
934 | * |
---|
935 | * Results: |
---|
936 | * Standard TCL error. |
---|
937 | * |
---|
938 | * Side effects: |
---|
939 | * May set file attributes for the file name. |
---|
940 | * |
---|
941 | *---------------------------------------------------------------------- |
---|
942 | */ |
---|
943 | |
---|
944 | int |
---|
945 | TclFileAttrsCmd( |
---|
946 | Tcl_Interp *interp, /* The interpreter for error reporting. */ |
---|
947 | int objc, /* Number of command line arguments. */ |
---|
948 | Tcl_Obj *CONST objv[]) /* The command line objects. */ |
---|
949 | { |
---|
950 | int result; |
---|
951 | CONST char ** attributeStrings; |
---|
952 | Tcl_Obj* objStrings = NULL; |
---|
953 | int numObjStrings = -1; |
---|
954 | Tcl_Obj *filePtr; |
---|
955 | |
---|
956 | if (objc < 3) { |
---|
957 | Tcl_WrongNumArgs(interp, 2, objv, |
---|
958 | "name ?option? ?value? ?option value ...?"); |
---|
959 | return TCL_ERROR; |
---|
960 | } |
---|
961 | |
---|
962 | filePtr = objv[2]; |
---|
963 | if (Tcl_FSConvertToPathType(interp, filePtr) != TCL_OK) { |
---|
964 | return TCL_ERROR; |
---|
965 | } |
---|
966 | |
---|
967 | objc -= 3; |
---|
968 | objv += 3; |
---|
969 | result = TCL_ERROR; |
---|
970 | Tcl_SetErrno(0); |
---|
971 | |
---|
972 | attributeStrings = Tcl_FSFileAttrStrings(filePtr, &objStrings); |
---|
973 | if (attributeStrings == NULL) { |
---|
974 | int index; |
---|
975 | Tcl_Obj *objPtr; |
---|
976 | |
---|
977 | if (objStrings == NULL) { |
---|
978 | if (Tcl_GetErrno() != 0) { |
---|
979 | /* |
---|
980 | * There was an error, probably that the filePtr is not |
---|
981 | * accepted by any filesystem |
---|
982 | */ |
---|
983 | Tcl_AppendResult(interp, "could not read \"", |
---|
984 | TclGetString(filePtr), "\": ", Tcl_PosixError(interp), |
---|
985 | NULL); |
---|
986 | return TCL_ERROR; |
---|
987 | } |
---|
988 | goto end; |
---|
989 | } |
---|
990 | |
---|
991 | /* |
---|
992 | * We own the object now. |
---|
993 | */ |
---|
994 | |
---|
995 | Tcl_IncrRefCount(objStrings); |
---|
996 | |
---|
997 | /* |
---|
998 | * Use objStrings as a list object. |
---|
999 | */ |
---|
1000 | |
---|
1001 | if (Tcl_ListObjLength(interp, objStrings, &numObjStrings) != TCL_OK) { |
---|
1002 | goto end; |
---|
1003 | } |
---|
1004 | attributeStrings = (CONST char **) TclStackAlloc(interp, |
---|
1005 | (1+numObjStrings) * sizeof(char*)); |
---|
1006 | for (index = 0; index < numObjStrings; index++) { |
---|
1007 | Tcl_ListObjIndex(interp, objStrings, index, &objPtr); |
---|
1008 | attributeStrings[index] = TclGetString(objPtr); |
---|
1009 | } |
---|
1010 | attributeStrings[index] = NULL; |
---|
1011 | } |
---|
1012 | if (objc == 0) { |
---|
1013 | /* |
---|
1014 | * Get all attributes. |
---|
1015 | */ |
---|
1016 | |
---|
1017 | int index, res = TCL_OK, nbAtts = 0; |
---|
1018 | Tcl_Obj *listPtr; |
---|
1019 | |
---|
1020 | listPtr = Tcl_NewListObj(0, NULL); |
---|
1021 | for (index = 0; attributeStrings[index] != NULL; index++) { |
---|
1022 | Tcl_Obj *objPtrAttr; |
---|
1023 | |
---|
1024 | if (res != TCL_OK) { |
---|
1025 | /* |
---|
1026 | * Clear the error from the last iteration. |
---|
1027 | */ |
---|
1028 | |
---|
1029 | Tcl_ResetResult(interp); |
---|
1030 | } |
---|
1031 | |
---|
1032 | res = Tcl_FSFileAttrsGet(interp, index, filePtr, &objPtrAttr); |
---|
1033 | if (res == TCL_OK) { |
---|
1034 | Tcl_Obj *objPtr = |
---|
1035 | Tcl_NewStringObj(attributeStrings[index], -1); |
---|
1036 | |
---|
1037 | Tcl_ListObjAppendElement(interp, listPtr, objPtr); |
---|
1038 | Tcl_ListObjAppendElement(interp, listPtr, objPtrAttr); |
---|
1039 | nbAtts++; |
---|
1040 | } |
---|
1041 | } |
---|
1042 | |
---|
1043 | if (index > 0 && nbAtts == 0) { |
---|
1044 | /* |
---|
1045 | * Error: no valid attributes found. |
---|
1046 | */ |
---|
1047 | |
---|
1048 | Tcl_DecrRefCount(listPtr); |
---|
1049 | goto end; |
---|
1050 | } |
---|
1051 | |
---|
1052 | Tcl_SetObjResult(interp, listPtr); |
---|
1053 | } else if (objc == 1) { |
---|
1054 | /* |
---|
1055 | * Get one attribute. |
---|
1056 | */ |
---|
1057 | |
---|
1058 | int index; |
---|
1059 | Tcl_Obj *objPtr = NULL; |
---|
1060 | |
---|
1061 | if (numObjStrings == 0) { |
---|
1062 | Tcl_AppendResult(interp, "bad option \"", TclGetString(objv[0]), |
---|
1063 | "\", there are no file attributes in this filesystem.", |
---|
1064 | NULL); |
---|
1065 | goto end; |
---|
1066 | } |
---|
1067 | |
---|
1068 | if (Tcl_GetIndexFromObj(interp, objv[0], attributeStrings, |
---|
1069 | "option", 0, &index) != TCL_OK) { |
---|
1070 | goto end; |
---|
1071 | } |
---|
1072 | if (Tcl_FSFileAttrsGet(interp, index, filePtr, |
---|
1073 | &objPtr) != TCL_OK) { |
---|
1074 | goto end; |
---|
1075 | } |
---|
1076 | Tcl_SetObjResult(interp, objPtr); |
---|
1077 | } else { |
---|
1078 | /* |
---|
1079 | * Set option/value pairs. |
---|
1080 | */ |
---|
1081 | |
---|
1082 | int i, index; |
---|
1083 | |
---|
1084 | if (numObjStrings == 0) { |
---|
1085 | Tcl_AppendResult(interp, "bad option \"", TclGetString(objv[0]), |
---|
1086 | "\", there are no file attributes in this filesystem.", |
---|
1087 | NULL); |
---|
1088 | goto end; |
---|
1089 | } |
---|
1090 | |
---|
1091 | for (i = 0; i < objc ; i += 2) { |
---|
1092 | if (Tcl_GetIndexFromObj(interp, objv[i], attributeStrings, |
---|
1093 | "option", 0, &index) != TCL_OK) { |
---|
1094 | goto end; |
---|
1095 | } |
---|
1096 | if (i + 1 == objc) { |
---|
1097 | Tcl_AppendResult(interp, "value for \"", |
---|
1098 | TclGetString(objv[i]), "\" missing", NULL); |
---|
1099 | goto end; |
---|
1100 | } |
---|
1101 | if (Tcl_FSFileAttrsSet(interp, index, filePtr, |
---|
1102 | objv[i + 1]) != TCL_OK) { |
---|
1103 | goto end; |
---|
1104 | } |
---|
1105 | } |
---|
1106 | } |
---|
1107 | result = TCL_OK; |
---|
1108 | |
---|
1109 | end: |
---|
1110 | if (numObjStrings != -1) { |
---|
1111 | /* |
---|
1112 | * Free up the array we allocated. |
---|
1113 | */ |
---|
1114 | |
---|
1115 | TclStackFree(interp, (void *)attributeStrings); |
---|
1116 | |
---|
1117 | /* |
---|
1118 | * We don't need this object that was passed to us any more. |
---|
1119 | */ |
---|
1120 | |
---|
1121 | if (objStrings != NULL) { |
---|
1122 | Tcl_DecrRefCount(objStrings); |
---|
1123 | } |
---|
1124 | } |
---|
1125 | return result; |
---|
1126 | } |
---|
1127 | |
---|
1128 | /* |
---|
1129 | * Local Variables: |
---|
1130 | * mode: c |
---|
1131 | * c-basic-offset: 4 |
---|
1132 | * fill-column: 78 |
---|
1133 | * End: |
---|
1134 | */ |
---|