1 | /* |
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2 | * $Source: /afs/dev.mit.edu/source/repository/athena/bin/delete/expunge.c,v $ |
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3 | * $Author: jik $ |
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4 | * |
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5 | * This program is part of a package including delete, undelete, |
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6 | * lsdel, expunge and purge. The software suite is meant as a |
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7 | * replacement for rm which allows for file recovery. |
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8 | * |
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9 | * Copyright (c) 1989 by the Massachusetts Institute of Technology. |
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10 | * For copying and distribution information, see the file "mit-copyright.h." |
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11 | */ |
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12 | |
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13 | #if (!defined(lint) && !defined(SABER)) |
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14 | static char rcsid_expunge_c[] = "$Header: /afs/dev.mit.edu/source/repository/athena/bin/delete/expunge.c,v 1.10 1989-10-23 13:37:44 jik Exp $"; |
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15 | #endif |
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16 | |
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17 | #include <stdio.h> |
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18 | #include <sys/types.h> |
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19 | #include <sys/time.h> |
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20 | #include <sys/dir.h> |
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21 | #include <sys/param.h> |
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22 | #include <strings.h> |
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23 | #include <sys/stat.h> |
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24 | #include <com_err.h> |
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25 | #include <errno.h> |
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26 | #include "col.h" |
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27 | #include "directories.h" |
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28 | #include "util.h" |
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29 | #include "pattern.h" |
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30 | #include "expunge.h" |
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31 | #include "shell_regexp.h" |
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32 | #include "mit-copyright.h" |
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33 | #include "delete_errs.h" |
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34 | #include "errors.h" |
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35 | |
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36 | extern char *malloc(), *realloc(); |
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37 | extern long current_time; |
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38 | extern int errno; |
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39 | |
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40 | char *whoami; |
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41 | |
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42 | int timev, /* minimum mod time before undeletion */ |
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43 | interactive, /* query before each expunge */ |
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44 | recursive, /* expunge undeleted directories recursively */ |
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45 | noop, /* print what would be done instead of doing it */ |
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46 | verbose, /* print a line as each file is deleted */ |
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47 | force, /* do not ask for any confirmation */ |
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48 | listfiles, /* list files at toplevel */ |
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49 | yield; /* print yield of expunge at end */ |
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50 | |
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51 | int blocks_removed = 0; |
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52 | |
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53 | |
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54 | |
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55 | |
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56 | main(argc, argv) |
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57 | int argc; |
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58 | char *argv[]; |
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59 | { |
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60 | extern char *optarg; |
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61 | extern int optind; |
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62 | int arg; |
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63 | |
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64 | initialize_del_error_table(); |
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65 | |
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66 | whoami = lastpart(argv[0]); |
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67 | if (*whoami == 'p') { /* we're doing a purge */ |
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68 | if (purge()) |
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69 | error("purge"); |
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70 | exit(error_occurred ? 1 : 0); |
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71 | } |
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72 | timev = 0; |
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73 | yield = interactive = recursive = noop = verbose = listfiles = force = 0; |
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74 | while ((arg = getopt(argc, argv, "t:irfnvly")) != EOF) { |
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75 | switch (arg) { |
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76 | case 't': |
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77 | timev = atoi(optarg); |
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78 | break; |
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79 | case 'i': |
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80 | interactive++; |
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81 | break; |
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82 | case 'r': |
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83 | recursive++; |
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84 | break; |
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85 | case 'f': |
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86 | force++; |
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87 | break; |
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88 | case 'n': |
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89 | noop++; |
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90 | break; |
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91 | case 'v': |
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92 | verbose++; |
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93 | break; |
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94 | case 'l': |
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95 | listfiles++; |
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96 | break; |
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97 | case 'y': |
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98 | yield++; |
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99 | break; |
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100 | default: |
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101 | usage(); |
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102 | exit(1); |
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103 | } |
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104 | } |
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105 | if (optind == argc) { |
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106 | char *dir; |
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107 | dir = "."; /* current working directory */ |
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108 | if (expunge(&dir, 1)) |
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109 | error("expunging ."); |
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110 | } |
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111 | else if (expunge(&argv[optind], argc - optind)) |
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112 | error("expunge"); |
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113 | |
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114 | exit((error_occurred && (! force)) ? 1 : 0); |
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115 | } |
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116 | |
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117 | |
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118 | |
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119 | |
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120 | |
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121 | purge() |
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122 | { |
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123 | char *home; |
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124 | int retval; |
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125 | |
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126 | home = malloc(MAXPATHLEN); |
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127 | if (! home) { |
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128 | set_error(errno); |
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129 | error("purge"); |
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130 | return error_code; |
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131 | } |
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132 | timev = interactive = noop = verbose = force = 0; |
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133 | yield = listfiles = recursive = 1; |
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134 | if (retval = get_home(home)) { |
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135 | error("purge"); |
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136 | return retval; |
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137 | } |
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138 | |
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139 | printf("Please be patient.... this may take a while.\n\n"); |
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140 | |
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141 | if (retval = expunge(&home, 1)) { |
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142 | error("expunge"); |
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143 | return retval; |
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144 | } |
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145 | } |
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146 | |
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147 | |
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148 | |
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149 | |
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150 | usage() |
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151 | { |
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152 | printf("Usage: %s [ options ] [ filename [ ... ]]\n", whoami); |
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153 | printf("Options are:\n"); |
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154 | printf(" -r recursive\n"); |
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155 | printf(" -i interactive\n"); |
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156 | printf(" -f force\n"); |
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157 | printf(" -t n n-day-or-older expunge\n"); |
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158 | printf(" -n noop\n"); |
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159 | printf(" -v verbose\n"); |
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160 | printf(" -l list files before expunging\n"); |
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161 | printf(" -y print yield of expunge\n"); |
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162 | printf(" -- end options and start filenames\n"); |
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163 | } |
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164 | |
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165 | |
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166 | |
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167 | |
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168 | |
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169 | int expunge(files, num) |
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170 | char **files; |
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171 | int num; |
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172 | { |
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173 | char *file_re; |
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174 | char **found_files; |
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175 | int num_found; |
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176 | char *start_dir; |
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177 | int status = 0; |
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178 | int total = 0; |
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179 | filerec *current; |
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180 | int retval; |
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181 | |
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182 | if (initialize_tree()) |
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183 | exit(1); |
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184 | |
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185 | for ( ; num ; num--) { |
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186 | if (*files[num - 1] == '/') { |
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187 | start_dir = "/"; |
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188 | file_re = files[num - 1] + 1; |
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189 | } |
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190 | else { |
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191 | start_dir = ""; |
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192 | file_re = files[num - 1]; |
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193 | } |
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194 | |
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195 | retval = get_the_files(start_dir, file_re, &num_found, &found_files); |
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196 | if (retval) { |
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197 | error(files[num - 1]); |
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198 | return retval; |
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199 | } |
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200 | |
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201 | if (num_found) { |
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202 | num_found = process_files(found_files, num_found); |
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203 | if (num_found < 0) { |
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204 | error("process_files"); |
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205 | return error_code; |
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206 | } |
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207 | } |
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208 | |
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209 | total += num_found; |
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210 | if (! num_found) if (! force) { |
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211 | /* |
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212 | * There are three different situations here. Eiter we |
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213 | * are dealing with an existing directory with no |
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214 | * deleted files in it, or we are deleting with a |
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215 | * non-existing deleted file with wildcards, or we are |
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216 | * dealing with a non-existing deleted file without |
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217 | * wildcards. In the former case we print nothing, and |
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218 | * in the latter cases we print either "no match" or |
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219 | * "not found" respectively |
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220 | */ |
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221 | if (no_wildcards(file_re)) { |
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222 | if (! directory_exists(files[num - 1])) { |
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223 | set_error(ENOENT); |
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224 | error(files[num - 1]); |
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225 | } |
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226 | } |
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227 | else { |
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228 | set_error(ENOMATCH); |
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229 | error(files[num - 1]); |
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230 | } |
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231 | } |
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232 | } |
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233 | if (total && listfiles) { |
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234 | if (retval = list_files()) { |
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235 | error("list_files"); |
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236 | return retval; |
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237 | } |
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238 | if (! force) if (! top_level()) { |
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239 | set_status(EXPUNGE_NOT_EXPUNGED); |
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240 | return error_code; |
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241 | } |
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242 | } |
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243 | current = get_root_tree(); |
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244 | if (current) { |
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245 | if (retval = expunge_specified(current)) { |
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246 | error("expunge_specified"); |
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247 | status = retval; |
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248 | } |
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249 | } |
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250 | current = get_cwd_tree(); |
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251 | if (current) { |
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252 | if (retval = expunge_specified(current)) { |
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253 | error("expunge_specified"); |
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254 | status = retval; |
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255 | } |
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256 | } |
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257 | if (yield) { |
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258 | if (noop) |
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259 | printf("Total that would be expunged: %dk\n", |
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260 | blk_to_k(blocks_removed)); |
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261 | else |
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262 | printf("Total expunged: %dk\n", blk_to_k(blocks_removed)); |
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263 | } |
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264 | return status; |
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265 | } |
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266 | |
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267 | |
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268 | |
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269 | expunge_specified(leaf) |
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270 | filerec *leaf; |
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271 | { |
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272 | int status = 0; |
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273 | int do_it = 1; |
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274 | int retval; |
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275 | |
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276 | if ((leaf->specified) && ((leaf->specs.st_mode & S_IFMT) == S_IFDIR)) { |
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277 | char buf[MAXPATHLEN]; |
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278 | |
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279 | if (retval = get_leaf_path(leaf, buf)) { |
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280 | error("get_leaf_path"); |
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281 | return retval; |
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282 | } |
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283 | convert_to_user_name(buf, buf); |
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284 | |
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285 | if (interactive) { |
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286 | printf("%s: Expunge directory %s? ", whoami, buf); |
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287 | status = (! (do_it = yes())); |
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288 | } |
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289 | } |
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290 | if (do_it) { |
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291 | if (leaf->dirs) { |
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292 | if (retval = expunge_specified(leaf->dirs)) { |
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293 | error("expunge_specified"); |
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294 | status = retval; |
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295 | } |
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296 | } |
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297 | if (leaf->files) { |
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298 | if (retval = expunge_specified(leaf->files)) { |
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299 | error("expunge_specified"); |
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300 | status = retval; |
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301 | } |
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302 | } |
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303 | } |
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304 | if (leaf->specified && (! status)) { |
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305 | if (retval = really_do_expunge(leaf)) { |
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306 | error("really_do_expunge"); |
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307 | status = retval; |
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308 | } |
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309 | } |
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310 | if (leaf->next) { |
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311 | if (retval = expunge_specified(leaf->next)) { |
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312 | error("expunge_specified"); |
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313 | status = retval; |
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314 | } |
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315 | } |
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316 | |
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317 | free_leaf(leaf); |
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318 | return status; |
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319 | } |
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320 | |
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321 | |
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322 | process_files(files, num) |
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323 | char **files; |
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324 | int num; |
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325 | { |
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326 | int i, skipped = 0; |
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327 | filerec *leaf; |
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328 | |
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329 | for (i = 0; i < num; i++) { |
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330 | if (add_path_to_tree(files[i], &leaf)) { |
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331 | error("add_path_to_tree"); |
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332 | return -1; |
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333 | } |
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334 | free(files[i]); |
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335 | if (! timed_out(leaf, current_time, timev)) { |
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336 | free_leaf(leaf); |
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337 | skipped++; |
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338 | } |
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339 | } |
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340 | free((char *) files); |
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341 | return(num-skipped); |
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342 | } |
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343 | |
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344 | |
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345 | |
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346 | |
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347 | |
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348 | |
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349 | |
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350 | |
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351 | |
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352 | really_do_expunge(file_ent) |
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353 | filerec *file_ent; |
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354 | { |
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355 | char real[MAXPATHLEN], user[MAXPATHLEN]; |
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356 | int status; |
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357 | int retval; |
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358 | |
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359 | if (retval = get_leaf_path(file_ent, real)) { |
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360 | error("get_leaf_path"); |
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361 | return retval; |
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362 | } |
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363 | convert_to_user_name(real, user); |
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364 | |
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365 | if (interactive) { |
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366 | printf ("%s: Expunge %s (%dk)? ", whoami, user, |
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367 | blk_to_k(file_ent->specs.st_blocks)); |
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368 | if (! yes()) { |
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369 | set_status(EXPUNGE_NOT_EXPUNGED); |
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370 | return error_code; |
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371 | } |
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372 | } |
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373 | |
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374 | if (noop) { |
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375 | blocks_removed += file_ent->specs.st_blocks; |
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376 | printf("%s: %s (%dk) would be expunged (%dk total)\n", whoami, user, |
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377 | blk_to_k(file_ent->specs.st_blocks), |
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378 | blk_to_k(blocks_removed)); |
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379 | return 0; |
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380 | } |
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381 | |
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382 | if ((file_ent->specs.st_mode & S_IFMT) == S_IFDIR) |
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383 | status = rmdir(real); |
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384 | else |
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385 | status = unlink(real); |
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386 | if (! status) { |
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387 | blocks_removed += file_ent->specs.st_blocks; |
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388 | if (verbose) |
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389 | printf("%s: %s (%dk) expunged (%dk total)\n", whoami, user, |
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390 | blk_to_k(file_ent->specs.st_blocks), |
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391 | blk_to_k(blocks_removed)); |
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392 | return 0; |
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393 | } |
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394 | else { |
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395 | set_error(errno); |
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396 | error(real); |
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397 | return error_code; |
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398 | } |
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399 | } |
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400 | |
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401 | |
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402 | |
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403 | |
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404 | |
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405 | |
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406 | |
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407 | |
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408 | |
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409 | top_level() |
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410 | { |
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411 | if (interactive) { |
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412 | printf("The above files, which have been marked for deletion, are about to be\n"); |
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413 | printf("expunged forever! You will be asked for confirmation before each file is\n"); |
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414 | printf("deleted. Do you wish to continue [return = no]? "); |
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415 | } |
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416 | else { |
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417 | printf("The above files, which have been marked for deletion, are about to be\n"); |
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418 | printf("expunged forever! Make sure you don't need any of them before continuing.\n"); |
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419 | printf("Do you wish to continue [return = no]? "); |
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420 | } |
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421 | return (yes()); |
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422 | } |
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423 | |
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424 | |
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425 | |
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426 | |
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427 | |
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428 | list_files() |
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429 | { |
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430 | filerec *current; |
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431 | char **strings; |
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432 | int num; |
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433 | int retval; |
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434 | |
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435 | strings = (char **) malloc(sizeof(char *)); |
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436 | num = 0; |
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437 | if (! strings) { |
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438 | set_error(errno); |
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439 | error("malloc"); |
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440 | return error_code; |
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441 | } |
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442 | |
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443 | printf("The following deleted files are going to be expunged: \n\n"); |
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444 | |
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445 | current = get_root_tree(); |
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446 | if (retval = accumulate_names(current, &strings, &num)) { |
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447 | error("accumulate_names"); |
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448 | return retval; |
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449 | } |
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450 | current = get_cwd_tree(); |
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451 | if (retval = accumulate_names(current, &strings, &num)) { |
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452 | error("accumulate_names"); |
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453 | return retval; |
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454 | } |
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455 | if (retval = column_array(strings, num, DEF_SCR_WIDTH, 0, 0, 2, 1, 0, |
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456 | 1, stdout)) { |
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457 | error("column_array"); |
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458 | return retval; |
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459 | } |
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460 | |
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461 | printf("\n"); |
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462 | return(0); |
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463 | } |
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464 | |
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465 | |
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466 | |
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467 | |
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468 | |
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469 | int get_the_files(base, reg_exp, num_found, found) |
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470 | char *base, *reg_exp; |
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471 | int *num_found; |
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472 | char ***found; |
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473 | { |
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474 | char **matches; |
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475 | int num_matches; |
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476 | int num; |
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477 | int i; |
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478 | int retval; |
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479 | |
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480 | *found = (char **) malloc(0); |
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481 | num = 0; |
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482 | |
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483 | if (retval = find_matches(base, reg_exp, &num_matches, &matches)) { |
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484 | error("find_matches"); |
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485 | return retval; |
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486 | } |
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487 | |
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488 | if (recursive) { |
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489 | char **recurs_found; |
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490 | int recurs_num; |
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491 | |
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492 | for (i = 0; i < num_matches; free(matches[i]), i++) { |
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493 | if (is_deleted(lastpart(matches[i]))) { |
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494 | if (retval = add_str(found, num, matches[i])) { |
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495 | error("add_str"); |
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496 | return retval; |
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497 | } |
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498 | num++; |
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499 | } |
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500 | if (retval = find_deleted_recurses(matches[i], &recurs_num, |
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501 | &recurs_found)) { |
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502 | error("find_deleted_recurses"); |
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503 | return retval; |
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504 | } |
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505 | if (retval = add_arrays(found, &num, &recurs_found, |
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506 | &recurs_num)) { |
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507 | error("add_arrays"); |
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508 | return retval; |
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509 | } |
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510 | } |
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511 | } |
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512 | else { |
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513 | struct stat stat_buf; |
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514 | char **contents_found; |
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515 | int num_contents; |
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516 | |
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517 | for (i = 0; i < num_matches; free(matches[i]), i++) { |
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518 | if (is_deleted(lastpart(matches[i]))) { |
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519 | if (retval = add_str(found, num, matches[i])) { |
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520 | error("add_str"); |
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521 | return retval; |
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522 | } |
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523 | num++; |
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524 | } |
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525 | if (lstat(matches[i], &stat_buf)) |
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526 | continue; |
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527 | if ((stat_buf.st_mode & S_IFMT) == S_IFDIR) { |
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528 | if (retval = |
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529 | find_deleted_contents_recurs(matches[i], &num_contents, |
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530 | &contents_found)) { |
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531 | error("find_deleted_contents_recurs"); |
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532 | return retval; |
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533 | } |
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534 | if (retval = add_arrays(found, &num, &contents_found, |
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535 | &num_contents)) { |
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536 | error("add_arrays"); |
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537 | return retval; |
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538 | } |
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539 | } |
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540 | } |
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541 | } |
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542 | free((char *) matches); |
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543 | *num_found = num; |
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544 | return 0; |
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545 | } |
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