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@@ -1,480 +1,481 b'' | |||
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1 | 1 | # verify.py - repository integrity checking for Mercurial |
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2 | 2 | # |
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3 | 3 | # Copyright 2006, 2007 Matt Mackall <mpm@selenic.com> |
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4 | 4 | # |
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5 | 5 | # This software may be used and distributed according to the terms of the |
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6 | 6 | # GNU General Public License version 2 or any later version. |
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7 | 7 | |
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8 | 8 | from __future__ import absolute_import |
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9 | 9 | |
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10 | 10 | import os |
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11 | 11 | |
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12 | 12 | from .i18n import _ |
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13 | 13 | from .node import ( |
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14 | 14 | nullid, |
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15 | 15 | short, |
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16 | 16 | ) |
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17 | 17 | |
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18 | 18 | from . import ( |
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19 | 19 | error, |
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20 | 20 | revlog, |
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21 | 21 | scmutil, |
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22 | 22 | util, |
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23 | 23 | ) |
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24 | 24 | |
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25 | 25 | def verify(repo): |
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26 | 26 | with repo.lock(): |
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27 | 27 | return verifier(repo).verify() |
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28 | 28 | |
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29 | 29 | def _normpath(f): |
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30 | 30 | # under hg < 2.4, convert didn't sanitize paths properly, so a |
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31 | 31 | # converted repo may contain repeated slashes |
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32 | 32 | while '//' in f: |
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33 | 33 | f = f.replace('//', '/') |
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34 | 34 | return f |
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35 | 35 | |
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36 | 36 | class verifier(object): |
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37 | 37 | # The match argument is always None in hg core, but e.g. the narrowhg |
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38 | 38 | # extension will pass in a matcher here. |
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39 | 39 | def __init__(self, repo, match=None): |
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40 | 40 | self.repo = repo.unfiltered() |
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41 | 41 | self.ui = repo.ui |
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42 | 42 | self.match = match or scmutil.matchall(repo) |
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43 | 43 | self.badrevs = set() |
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44 | 44 | self.errors = 0 |
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45 | 45 | self.warnings = 0 |
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46 | 46 | self.havecl = len(repo.changelog) > 0 |
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47 | 47 | self.havemf = len(repo.manifestlog._revlog) > 0 |
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48 | 48 | self.revlogv1 = repo.changelog.version != revlog.REVLOGV0 |
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49 | 49 | self.lrugetctx = util.lrucachefunc(repo.changectx) |
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50 | 50 | self.refersmf = False |
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51 | 51 | self.fncachewarned = False |
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52 | 52 | |
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53 | 53 | def warn(self, msg): |
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54 | 54 | self.ui.warn(msg + "\n") |
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55 | 55 | self.warnings += 1 |
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56 | 56 | |
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57 | 57 | def err(self, linkrev, msg, filename=None): |
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58 | 58 | if linkrev is not None: |
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59 | 59 | self.badrevs.add(linkrev) |
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60 | 60 | else: |
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61 | 61 | linkrev = '?' |
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62 | 62 | msg = "%s: %s" % (linkrev, msg) |
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63 | 63 | if filename: |
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64 | 64 | msg = "%s@%s" % (filename, msg) |
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65 | 65 | self.ui.warn(" " + msg + "\n") |
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66 | 66 | self.errors += 1 |
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67 | 67 | |
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68 | 68 | def exc(self, linkrev, msg, inst, filename=None): |
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69 | 69 | if not str(inst): |
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70 | 70 | inst = repr(inst) |
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71 | 71 | self.err(linkrev, "%s: %s" % (msg, inst), filename) |
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72 | 72 | |
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73 | 73 | def checklog(self, obj, name, linkrev): |
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74 | 74 | if not len(obj) and (self.havecl or self.havemf): |
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75 | 75 | self.err(linkrev, _("empty or missing %s") % name) |
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76 | 76 | return |
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77 | 77 | |
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78 | 78 | d = obj.checksize() |
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79 | 79 | if d[0]: |
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80 | 80 | self.err(None, _("data length off by %d bytes") % d[0], name) |
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81 | 81 | if d[1]: |
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82 | 82 | self.err(None, _("index contains %d extra bytes") % d[1], name) |
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83 | 83 | |
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84 | 84 | if obj.version != revlog.REVLOGV0: |
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85 | 85 | if not self.revlogv1: |
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86 | 86 | self.warn(_("warning: `%s' uses revlog format 1") % name) |
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87 | 87 | elif self.revlogv1: |
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88 | 88 | self.warn(_("warning: `%s' uses revlog format 0") % name) |
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89 | 89 | |
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90 | 90 | def checkentry(self, obj, i, node, seen, linkrevs, f): |
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91 | 91 | lr = obj.linkrev(obj.rev(node)) |
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92 | 92 | if lr < 0 or (self.havecl and lr not in linkrevs): |
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93 | 93 | if lr < 0 or lr >= len(self.repo.changelog): |
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94 | 94 | msg = _("rev %d points to nonexistent changeset %d") |
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95 | 95 | else: |
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96 | 96 | msg = _("rev %d points to unexpected changeset %d") |
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97 | 97 | self.err(None, msg % (i, lr), f) |
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98 | 98 | if linkrevs: |
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99 | 99 | if f and len(linkrevs) > 1: |
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100 | 100 | try: |
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101 | 101 | # attempt to filter down to real linkrevs |
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102 | 102 | linkrevs = [l for l in linkrevs |
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103 | 103 | if self.lrugetctx(l)[f].filenode() == node] |
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104 | 104 | except Exception: |
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105 | 105 | pass |
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106 | 106 | self.warn(_(" (expected %s)") % " ".join(map(str, linkrevs))) |
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107 | 107 | lr = None # can't be trusted |
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108 | 108 | |
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109 | 109 | try: |
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110 | 110 | p1, p2 = obj.parents(node) |
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111 | 111 | if p1 not in seen and p1 != nullid: |
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112 | 112 | self.err(lr, _("unknown parent 1 %s of %s") % |
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113 | 113 | (short(p1), short(node)), f) |
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114 | 114 | if p2 not in seen and p2 != nullid: |
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115 | 115 | self.err(lr, _("unknown parent 2 %s of %s") % |
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116 | 116 | (short(p2), short(node)), f) |
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117 | 117 | except Exception as inst: |
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118 | 118 | self.exc(lr, _("checking parents of %s") % short(node), inst, f) |
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119 | 119 | |
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120 | 120 | if node in seen: |
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121 | 121 | self.err(lr, _("duplicate revision %d (%d)") % (i, seen[node]), f) |
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122 | 122 | seen[node] = i |
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123 | 123 | return lr |
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124 | 124 | |
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125 | 125 | def verify(self): |
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126 | 126 | repo = self.repo |
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127 | 127 | |
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128 | 128 | ui = repo.ui |
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129 | 129 | |
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130 | 130 | if not repo.url().startswith('file:'): |
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131 | 131 | raise error.Abort(_("cannot verify bundle or remote repos")) |
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132 | 132 | |
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133 | 133 | if os.path.exists(repo.sjoin("journal")): |
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134 | 134 | ui.warn(_("abandoned transaction found - run hg recover\n")) |
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135 | 135 | |
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136 | 136 | if ui.verbose or not self.revlogv1: |
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137 | 137 | ui.status(_("repository uses revlog format %d\n") % |
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138 | 138 | (self.revlogv1 and 1 or 0)) |
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139 | 139 | |
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140 | 140 | mflinkrevs, filelinkrevs = self._verifychangelog() |
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141 | 141 | |
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142 | 142 | filenodes = self._verifymanifest(mflinkrevs) |
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143 | 143 | del mflinkrevs |
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144 | 144 | |
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145 | 145 | self._crosscheckfiles(filelinkrevs, filenodes) |
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146 | 146 | |
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147 | 147 | totalfiles, filerevisions = self._verifyfiles(filenodes, filelinkrevs) |
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148 | 148 | |
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149 | 149 | ui.status(_("%d files, %d changesets, %d total revisions\n") % |
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150 | 150 | (totalfiles, len(repo.changelog), filerevisions)) |
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151 | 151 | if self.warnings: |
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152 | 152 | ui.warn(_("%d warnings encountered!\n") % self.warnings) |
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153 | 153 | if self.fncachewarned: |
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154 | 154 | ui.warn(_('hint: run "hg debugrebuildfncache" to recover from ' |
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155 | 155 | 'corrupt fncache\n')) |
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156 | 156 | if self.errors: |
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157 | 157 | ui.warn(_("%d integrity errors encountered!\n") % self.errors) |
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158 | 158 | if self.badrevs: |
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159 | 159 | ui.warn(_("(first damaged changeset appears to be %d)\n") |
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160 | 160 | % min(self.badrevs)) |
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161 | 161 | return 1 |
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162 | 162 | |
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163 | 163 | def _verifychangelog(self): |
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164 | 164 | ui = self.ui |
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165 | 165 | repo = self.repo |
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166 | 166 | match = self.match |
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167 | 167 | cl = repo.changelog |
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168 | 168 | |
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169 | 169 | ui.status(_("checking changesets\n")) |
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170 | 170 | mflinkrevs = {} |
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171 | 171 | filelinkrevs = {} |
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172 | 172 | seen = {} |
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173 | 173 | self.checklog(cl, "changelog", 0) |
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174 | 174 | total = len(repo) |
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175 | 175 | for i in repo: |
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176 | 176 | ui.progress(_('checking'), i, total=total, unit=_('changesets')) |
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177 | 177 | n = cl.node(i) |
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178 | 178 | self.checkentry(cl, i, n, seen, [i], "changelog") |
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179 | 179 | |
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180 | 180 | try: |
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181 | 181 | changes = cl.read(n) |
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182 | 182 | if changes[0] != nullid: |
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183 | 183 | mflinkrevs.setdefault(changes[0], []).append(i) |
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184 | 184 | self.refersmf = True |
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185 | 185 | for f in changes[3]: |
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186 | 186 | if match(f): |
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187 | 187 | filelinkrevs.setdefault(_normpath(f), []).append(i) |
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188 | 188 | except Exception as inst: |
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189 | 189 | self.refersmf = True |
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190 | 190 | self.exc(i, _("unpacking changeset %s") % short(n), inst) |
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191 | 191 | ui.progress(_('checking'), None) |
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192 | 192 | return mflinkrevs, filelinkrevs |
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193 | 193 | |
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194 | 194 | def _verifymanifest(self, mflinkrevs, dir="", storefiles=None, |
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195 | 195 | progress=None): |
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196 | 196 | repo = self.repo |
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197 | 197 | ui = self.ui |
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198 | 198 | match = self.match |
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199 | 199 | mfl = self.repo.manifestlog |
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200 | 200 | mf = mfl._revlog.dirlog(dir) |
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201 | 201 | |
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202 | 202 | if not dir: |
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203 | 203 | self.ui.status(_("checking manifests\n")) |
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204 | 204 | |
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205 | 205 | filenodes = {} |
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206 | 206 | subdirnodes = {} |
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207 | 207 | seen = {} |
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208 | 208 | label = "manifest" |
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209 | 209 | if dir: |
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210 | 210 | label = dir |
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211 | 211 | revlogfiles = mf.files() |
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212 | 212 | storefiles.difference_update(revlogfiles) |
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213 | 213 | if progress: # should be true since we're in a subdirectory |
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214 | 214 | progress() |
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215 | 215 | if self.refersmf: |
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216 | 216 | # Do not check manifest if there are only changelog entries with |
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217 | 217 | # null manifests. |
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218 | 218 | self.checklog(mf, label, 0) |
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219 | 219 | total = len(mf) |
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220 | 220 | for i in mf: |
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221 | 221 | if not dir: |
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222 | 222 | ui.progress(_('checking'), i, total=total, unit=_('manifests')) |
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223 | 223 | n = mf.node(i) |
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224 | 224 | lr = self.checkentry(mf, i, n, seen, mflinkrevs.get(n, []), label) |
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225 | 225 | if n in mflinkrevs: |
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226 | 226 | del mflinkrevs[n] |
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227 | 227 | elif dir: |
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228 | 228 | self.err(lr, _("%s not in parent-directory manifest") % |
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229 | 229 | short(n), label) |
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230 | 230 | else: |
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231 | 231 | self.err(lr, _("%s not in changesets") % short(n), label) |
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232 | 232 | |
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233 | 233 | try: |
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234 | 234 | mfdelta = mfl.get(dir, n).readdelta(shallow=True) |
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235 | 235 | for f, fn, fl in mfdelta.iterentries(): |
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236 | 236 | if not f: |
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237 | 237 | self.err(lr, _("entry without name in manifest")) |
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238 | 238 | elif f == "/dev/null": # ignore this in very old repos |
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239 | 239 | continue |
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240 | 240 | fullpath = dir + _normpath(f) |
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241 | 241 | if fl == 't': |
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242 | 242 | if not match.visitdir(fullpath): |
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243 | 243 | continue |
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244 | 244 | subdirnodes.setdefault(fullpath + '/', {}).setdefault( |
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245 | 245 | fn, []).append(lr) |
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246 | 246 | else: |
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247 | 247 | if not match(fullpath): |
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248 | 248 | continue |
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249 | 249 | filenodes.setdefault(fullpath, {}).setdefault(fn, lr) |
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250 | 250 | except Exception as inst: |
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251 | 251 | self.exc(lr, _("reading delta %s") % short(n), inst, label) |
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252 | 252 | if not dir: |
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253 | 253 | ui.progress(_('checking'), None) |
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254 | 254 | |
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255 | 255 | if self.havemf: |
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256 | 256 | for c, m in sorted([(c, m) for m in mflinkrevs |
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257 | 257 | for c in mflinkrevs[m]]): |
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258 | 258 | if dir: |
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259 | 259 | self.err(c, _("parent-directory manifest refers to unknown " |
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260 | 260 | "revision %s") % short(m), label) |
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261 | 261 | else: |
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262 | 262 | self.err(c, _("changeset refers to unknown revision %s") % |
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263 | 263 | short(m), label) |
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264 | 264 | |
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265 | 265 | if not dir and subdirnodes: |
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266 | 266 | self.ui.status(_("checking directory manifests\n")) |
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267 | 267 | storefiles = set() |
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268 | 268 | subdirs = set() |
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269 | 269 | revlogv1 = self.revlogv1 |
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270 | 270 | for f, f2, size in repo.store.datafiles(): |
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271 | 271 | if not f: |
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272 | 272 | self.err(None, _("cannot decode filename '%s'") % f2) |
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273 | 273 | elif (size > 0 or not revlogv1) and f.startswith('meta/'): |
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274 | 274 | storefiles.add(_normpath(f)) |
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275 | 275 | subdirs.add(os.path.dirname(f)) |
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276 | 276 | subdircount = len(subdirs) |
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277 | 277 | currentsubdir = [0] |
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278 | 278 | def progress(): |
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279 | 279 | currentsubdir[0] += 1 |
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280 | 280 | ui.progress(_('checking'), currentsubdir[0], total=subdircount, |
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281 | 281 | unit=_('manifests')) |
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282 | 282 | |
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283 | 283 | for subdir, linkrevs in subdirnodes.iteritems(): |
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284 | 284 | subdirfilenodes = self._verifymanifest(linkrevs, subdir, storefiles, |
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285 | 285 | progress) |
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286 | 286 | for f, onefilenodes in subdirfilenodes.iteritems(): |
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287 | 287 | filenodes.setdefault(f, {}).update(onefilenodes) |
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288 | 288 | |
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289 | 289 | if not dir and subdirnodes: |
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290 | 290 | ui.progress(_('checking'), None) |
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291 | 291 | for f in sorted(storefiles): |
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292 | 292 | self.warn(_("warning: orphan revlog '%s'") % f) |
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293 | 293 | |
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294 | 294 | return filenodes |
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295 | 295 | |
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296 | 296 | def _crosscheckfiles(self, filelinkrevs, filenodes): |
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297 | 297 | repo = self.repo |
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298 | 298 | ui = self.ui |
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299 | 299 | ui.status(_("crosschecking files in changesets and manifests\n")) |
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300 | 300 | |
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301 | 301 | total = len(filelinkrevs) + len(filenodes) |
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302 | 302 | count = 0 |
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303 | 303 | if self.havemf: |
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304 | 304 | for f in sorted(filelinkrevs): |
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305 | 305 | count += 1 |
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306 | 306 | ui.progress(_('crosschecking'), count, total=total) |
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307 | 307 | if f not in filenodes: |
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308 | 308 | lr = filelinkrevs[f][0] |
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309 | 309 | self.err(lr, _("in changeset but not in manifest"), f) |
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310 | 310 | |
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311 | 311 | if self.havecl: |
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312 | 312 | for f in sorted(filenodes): |
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313 | 313 | count += 1 |
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314 | 314 | ui.progress(_('crosschecking'), count, total=total) |
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315 | 315 | if f not in filelinkrevs: |
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316 | 316 | try: |
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317 | 317 | fl = repo.file(f) |
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318 | 318 | lr = min([fl.linkrev(fl.rev(n)) for n in filenodes[f]]) |
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319 | 319 | except Exception: |
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320 | 320 | lr = None |
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321 | 321 | self.err(lr, _("in manifest but not in changeset"), f) |
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322 | 322 | |
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323 | 323 | ui.progress(_('crosschecking'), None) |
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324 | 324 | |
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325 | 325 | def _verifyfiles(self, filenodes, filelinkrevs): |
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326 | 326 | repo = self.repo |
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327 | 327 | ui = self.ui |
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328 | 328 | lrugetctx = self.lrugetctx |
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329 | 329 | revlogv1 = self.revlogv1 |
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330 | 330 | havemf = self.havemf |
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331 | 331 | ui.status(_("checking files\n")) |
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332 | 332 | |
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333 | 333 | storefiles = set() |
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334 | 334 | for f, f2, size in repo.store.datafiles(): |
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335 | 335 | if not f: |
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336 | 336 | self.err(None, _("cannot decode filename '%s'") % f2) |
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337 | 337 | elif (size > 0 or not revlogv1) and f.startswith('data/'): |
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338 | 338 | storefiles.add(_normpath(f)) |
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339 | 339 | |
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340 | 340 | files = sorted(set(filenodes) | set(filelinkrevs)) |
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341 | 341 | total = len(files) |
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342 | 342 | revisions = 0 |
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343 | 343 | for i, f in enumerate(files): |
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344 | 344 | ui.progress(_('checking'), i, item=f, total=total, unit=_('files')) |
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345 | 345 | try: |
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346 | 346 | linkrevs = filelinkrevs[f] |
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347 | 347 | except KeyError: |
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348 | 348 | # in manifest but not in changelog |
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349 | 349 | linkrevs = [] |
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350 | 350 | |
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351 | 351 | if linkrevs: |
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352 | 352 | lr = linkrevs[0] |
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353 | 353 | else: |
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354 | 354 | lr = None |
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355 | 355 | |
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356 | 356 | try: |
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357 | 357 | fl = repo.file(f) |
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358 | 358 | except error.RevlogError as e: |
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359 | 359 | self.err(lr, _("broken revlog! (%s)") % e, f) |
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360 | 360 | continue |
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361 | 361 | |
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362 | 362 | for ff in fl.files(): |
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363 | 363 | try: |
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364 | 364 | storefiles.remove(ff) |
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365 | 365 | except KeyError: |
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366 | 366 | self.warn(_(" warning: revlog '%s' not in fncache!") % ff) |
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367 | 367 | self.fncachewarned = True |
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368 | 368 | |
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369 | 369 | self.checklog(fl, f, lr) |
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370 | 370 | seen = {} |
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371 | 371 | rp = None |
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372 | 372 | for i in fl: |
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373 | 373 | revisions += 1 |
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374 | 374 | n = fl.node(i) |
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375 | 375 | lr = self.checkentry(fl, i, n, seen, linkrevs, f) |
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376 | 376 | if f in filenodes: |
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377 | 377 | if havemf and n not in filenodes[f]: |
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378 | 378 | self.err(lr, _("%s not in manifests") % (short(n)), f) |
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379 | 379 | else: |
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380 | 380 | del filenodes[f][n] |
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381 | 381 | |
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382 | 382 | # Verify contents. 4 cases to care about: |
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383 | 383 | # |
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384 | 384 | # common: the most common case |
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385 | 385 | # rename: with a rename |
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386 | 386 | # meta: file content starts with b'\1\n', the metadata |
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387 | 387 | # header defined in filelog.py, but without a rename |
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388 | 388 | # ext: content stored externally |
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389 | 389 | # |
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390 | 390 | # More formally, their differences are shown below: |
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391 | 391 | # |
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392 | 392 | # | common | rename | meta | ext |
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393 | 393 | # ------------------------------------------------------- |
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394 | 394 | # flags() | 0 | 0 | 0 | not 0 |
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395 | 395 | # renamed() | False | True | False | ? |
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396 | 396 | # rawtext[0:2]=='\1\n'| False | True | True | ? |
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397 | 397 | # |
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398 | 398 | # "rawtext" means the raw text stored in revlog data, which |
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399 | 399 | # could be retrieved by "revision(rev, raw=True)". "text" |
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400 | 400 | # mentioned below is "revision(rev, raw=False)". |
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401 | 401 | # |
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402 | 402 | # There are 3 different lengths stored physically: |
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403 | 403 | # 1. L1: rawsize, stored in revlog index |
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404 | 404 | # 2. L2: len(rawtext), stored in revlog data |
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405 | 405 | # 3. L3: len(text), stored in revlog data if flags==0, or |
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406 | 406 | # possibly somewhere else if flags!=0 |
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407 | 407 | # |
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408 | 408 | # L1 should be equal to L2. L3 could be different from them. |
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409 | 409 | # "text" may or may not affect commit hash depending on flag |
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410 | 410 | # processors (see revlog.addflagprocessor). |
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411 | 411 | # |
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412 | 412 | # | common | rename | meta | ext |
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413 | 413 | # ------------------------------------------------- |
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414 | 414 | # rawsize() | L1 | L1 | L1 | L1 |
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415 | 415 | # size() | L1 | L2-LM | L1(*) | L1 (?) |
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416 | 416 | # len(rawtext) | L2 | L2 | L2 | L2 |
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417 | 417 | # len(text) | L2 | L2 | L2 | L3 |
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418 | 418 | # len(read()) | L2 | L2-LM | L2-LM | L3 (?) |
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419 | 419 | # |
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420 | 420 | # LM: length of metadata, depending on rawtext |
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421 | 421 | # (*): not ideal, see comment in filelog.size |
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422 | 422 | # (?): could be "- len(meta)" if the resolved content has |
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423 | 423 | # rename metadata |
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424 | 424 | # |
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425 | 425 | # Checks needed to be done: |
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426 | 426 | # 1. length check: L1 == L2, in all cases. |
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427 | 427 | # 2. hash check: depending on flag processor, we may need to |
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428 | 428 | # use either "text" (external), or "rawtext" (in revlog). |
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429 | 429 | try: |
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430 | 430 | l = len(fl.read(n)) |
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431 | 431 | rp = fl.renamed(n) |
|
432 | 432 | if l != fl.size(i): |
|
433 | if len(fl.revision(n)) != fl.size(i): | |
|
433 | # the "L1 == L2" check | |
|
434 | if len(fl.revision(n, raw=True)) != fl.rawsize(i): | |
|
434 | 435 | self.err(lr, _("unpacked size is %s, %s expected") % |
|
435 | 436 | (l, fl.size(i)), f) |
|
436 | 437 | except error.CensoredNodeError: |
|
437 | 438 | # experimental config: censor.policy |
|
438 | 439 | if ui.config("censor", "policy", "abort") == "abort": |
|
439 | 440 | self.err(lr, _("censored file data"), f) |
|
440 | 441 | except Exception as inst: |
|
441 | 442 | self.exc(lr, _("unpacking %s") % short(n), inst, f) |
|
442 | 443 | |
|
443 | 444 | # check renames |
|
444 | 445 | try: |
|
445 | 446 | if rp: |
|
446 | 447 | if lr is not None and ui.verbose: |
|
447 | 448 | ctx = lrugetctx(lr) |
|
448 | 449 | found = False |
|
449 | 450 | for pctx in ctx.parents(): |
|
450 | 451 | if rp[0] in pctx: |
|
451 | 452 | found = True |
|
452 | 453 | break |
|
453 | 454 | if not found: |
|
454 | 455 | self.warn(_("warning: copy source of '%s' not" |
|
455 | 456 | " in parents of %s") % (f, ctx)) |
|
456 | 457 | fl2 = repo.file(rp[0]) |
|
457 | 458 | if not len(fl2): |
|
458 | 459 | self.err(lr, _("empty or missing copy source " |
|
459 | 460 | "revlog %s:%s") % (rp[0], short(rp[1])), f) |
|
460 | 461 | elif rp[1] == nullid: |
|
461 | 462 | ui.note(_("warning: %s@%s: copy source" |
|
462 | 463 | " revision is nullid %s:%s\n") |
|
463 | 464 | % (f, lr, rp[0], short(rp[1]))) |
|
464 | 465 | else: |
|
465 | 466 | fl2.rev(rp[1]) |
|
466 | 467 | except Exception as inst: |
|
467 | 468 | self.exc(lr, _("checking rename of %s") % short(n), inst, f) |
|
468 | 469 | |
|
469 | 470 | # cross-check |
|
470 | 471 | if f in filenodes: |
|
471 | 472 | fns = [(v, k) for k, v in filenodes[f].iteritems()] |
|
472 | 473 | for lr, node in sorted(fns): |
|
473 | 474 | self.err(lr, _("manifest refers to unknown revision %s") % |
|
474 | 475 | short(node), f) |
|
475 | 476 | ui.progress(_('checking'), None) |
|
476 | 477 | |
|
477 | 478 | for f in sorted(storefiles): |
|
478 | 479 | self.warn(_("warning: orphan revlog '%s'") % f) |
|
479 | 480 | |
|
480 | 481 | return len(files), revisions |
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