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5197 | serge | 1 | /* BFD back-end for archive files (libraries). |
2 | Copyright 1990-2013 Free Software Foundation, Inc. |
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3 | Written by Cygnus Support. Mostly Gumby Henkel-Wallace's fault. |
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4 | |||
5 | This file is part of BFD, the Binary File Descriptor library. |
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6 | |||
7 | This program is free software; you can redistribute it and/or modify |
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8 | it under the terms of the GNU General Public License as published by |
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9 | the Free Software Foundation; either version 3 of the License, or |
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10 | (at your option) any later version. |
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11 | |||
12 | This program is distributed in the hope that it will be useful, |
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13 | but WITHOUT ANY WARRANTY; without even the implied warranty of |
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14 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
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15 | GNU General Public License for more details. |
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16 | |||
17 | You should have received a copy of the GNU General Public License |
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18 | along with this program; if not, write to the Free Software |
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19 | Foundation, Inc., 51 Franklin Street - Fifth Floor, Boston, MA 02110-1301, USA. */ |
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20 | |||
21 | /* |
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22 | @setfilename archive-info |
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23 | SECTION |
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24 | Archives |
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25 | |||
26 | DESCRIPTION |
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27 | An archive (or library) is just another BFD. It has a symbol |
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28 | table, although there's not much a user program will do with it. |
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29 | |||
30 | The big difference between an archive BFD and an ordinary BFD |
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31 | is that the archive doesn't have sections. Instead it has a |
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32 | chain of BFDs that are considered its contents. These BFDs can |
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33 | be manipulated like any other. The BFDs contained in an |
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34 | archive opened for reading will all be opened for reading. You |
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35 | may put either input or output BFDs into an archive opened for |
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36 | output; they will be handled correctly when the archive is closed. |
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37 | |||
38 | Use < |
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39 | the contents of an archive opened for input. You don't |
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40 | have to read the entire archive if you don't want |
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41 | to! Read it until you find what you want. |
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42 | |||
43 | A BFD returned by < |
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44 | closed manually with < |
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45 | then a second iteration through the members of an archive may |
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46 | return the same BFD. If you close the archive BFD, then all |
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47 | the member BFDs will automatically be closed as well. |
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48 | |||
49 | Archive contents of output BFDs are chained through the |
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50 | < |
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51 | through the < |
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52 | < |
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53 | one open output archive at a time. |
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54 | |||
55 | As expected, the BFD archive code is more general than the |
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56 | archive code of any given environment. BFD archives may |
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57 | contain files of different formats (e.g., a.out and coff) and |
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58 | even different architectures. You may even place archives |
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59 | recursively into archives! |
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60 | |||
61 | This can cause unexpected confusion, since some archive |
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62 | formats are more expressive than others. For instance, Intel |
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63 | COFF archives can preserve long filenames; SunOS a.out archives |
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64 | cannot. If you move a file from the first to the second |
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65 | format and back again, the filename may be truncated. |
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66 | Likewise, different a.out environments have different |
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67 | conventions as to how they truncate filenames, whether they |
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68 | preserve directory names in filenames, etc. When |
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69 | interoperating with native tools, be sure your files are |
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70 | homogeneous. |
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71 | |||
72 | Beware: most of these formats do not react well to the |
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73 | presence of spaces in filenames. We do the best we can, but |
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74 | can't always handle this case due to restrictions in the format of |
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75 | archives. Many Unix utilities are braindead in regards to |
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76 | spaces and such in filenames anyway, so this shouldn't be much |
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77 | of a restriction. |
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78 | |||
79 | Archives are supported in BFD in < |
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80 | |||
81 | SUBSECTION |
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82 | Archive functions |
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83 | */ |
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84 | |||
85 | /* Assumes: |
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86 | o - all archive elements start on an even boundary, newline padded; |
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87 | o - all arch headers are char *; |
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88 | o - all arch headers are the same size (across architectures). |
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89 | */ |
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90 | |||
91 | /* Some formats provide a way to cram a long filename into the short |
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92 | (16 chars) space provided by a BSD archive. The trick is: make a |
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93 | special "file" in the front of the archive, sort of like the SYMDEF |
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94 | entry. If the filename is too long to fit, put it in the extended |
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95 | name table, and use its index as the filename. To prevent |
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96 | confusion prepend the index with a space. This means you can't |
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97 | have filenames that start with a space, but then again, many Unix |
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98 | utilities can't handle that anyway. |
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99 | |||
100 | This scheme unfortunately requires that you stand on your head in |
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101 | order to write an archive since you need to put a magic file at the |
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102 | front, and need to touch every entry to do so. C'est la vie. |
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103 | |||
104 | We support two variants of this idea: |
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105 | The SVR4 format (extended name table is named "//"), |
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106 | and an extended pseudo-BSD variant (extended name table is named |
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107 | "ARFILENAMES/"). The origin of the latter format is uncertain. |
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108 | |||
109 | BSD 4.4 uses a third scheme: It writes a long filename |
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110 | directly after the header. This allows 'ar q' to work. |
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111 | */ |
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112 | |||
113 | /* Summary of archive member names: |
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114 | |||
115 | Symbol table (must be first): |
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116 | "__.SYMDEF " - Symbol table, Berkeley style, produced by ranlib. |
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117 | "/ " - Symbol table, system 5 style. |
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118 | |||
119 | Long name table (must be before regular file members): |
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120 | "// " - Long name table, System 5 R4 style. |
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121 | "ARFILENAMES/ " - Long name table, non-standard extended BSD (not BSD 4.4). |
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122 | |||
123 | Regular file members with short names: |
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124 | "filename.o/ " - Regular file, System 5 style (embedded spaces ok). |
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125 | "filename.o " - Regular file, Berkeley style (no embedded spaces). |
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126 | |||
127 | Regular files with long names (or embedded spaces, for BSD variants): |
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128 | "/18 " - SVR4 style, name at offset 18 in name table. |
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129 | "#1/23 " - Long name (or embedded spaces) 23 characters long, |
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130 | BSD 4.4 style, full name follows header. |
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131 | " 18 " - Long name 18 characters long, extended pseudo-BSD. |
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132 | */ |
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133 | |||
134 | #include "sysdep.h" |
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135 | #include "bfd.h" |
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136 | #include "libiberty.h" |
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137 | #include "libbfd.h" |
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138 | #include "aout/ar.h" |
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139 | #include "aout/ranlib.h" |
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140 | #include "safe-ctype.h" |
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141 | #include "hashtab.h" |
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142 | #include "filenames.h" |
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143 | |||
144 | #ifndef errno |
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145 | extern int errno; |
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146 | #endif |
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147 | |||
148 | /* We keep a cache of archive filepointers to archive elements to |
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149 | speed up searching the archive by filepos. We only add an entry to |
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150 | the cache when we actually read one. We also don't sort the cache; |
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151 | it's generally short enough to search linearly. |
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152 | Note that the pointers here point to the front of the ar_hdr, not |
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153 | to the front of the contents! */ |
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154 | struct ar_cache |
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155 | { |
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156 | file_ptr ptr; |
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157 | bfd *arbfd; |
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158 | }; |
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159 | |||
160 | #define ar_padchar(abfd) ((abfd)->xvec->ar_pad_char) |
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161 | #define ar_maxnamelen(abfd) ((abfd)->xvec->ar_max_namelen) |
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162 | |||
163 | #define arch_eltdata(bfd) ((struct areltdata *) ((bfd)->arelt_data)) |
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164 | #define arch_hdr(bfd) ((struct ar_hdr *) arch_eltdata (bfd)->arch_header) |
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165 | |||
166 | /* True iff NAME designated a BSD 4.4 extended name. */ |
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167 | |||
168 | #define is_bsd44_extended_name(NAME) \ |
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169 | (NAME[0] == '#' && NAME[1] == '1' && NAME[2] == '/' && ISDIGIT (NAME[3])) |
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170 | |||
171 | void |
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172 | _bfd_ar_spacepad (char *p, size_t n, const char *fmt, long val) |
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173 | { |
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174 | static char buf[20]; |
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175 | size_t len; |
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176 | |||
177 | snprintf (buf, sizeof (buf), fmt, val); |
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178 | len = strlen (buf); |
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179 | if (len < n) |
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180 | { |
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181 | memcpy (p, buf, len); |
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182 | memset (p + len, ' ', n - len); |
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183 | } |
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184 | else |
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185 | memcpy (p, buf, n); |
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186 | } |
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187 | |||
188 | bfd_boolean |
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189 | _bfd_ar_sizepad (char *p, size_t n, bfd_size_type size) |
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190 | { |
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191 | static char buf[21]; |
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192 | size_t len; |
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193 | |||
194 | snprintf (buf, sizeof (buf), "%-10" BFD_VMA_FMT "u", size); |
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195 | len = strlen (buf); |
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196 | if (len > n) |
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197 | { |
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198 | bfd_set_error (bfd_error_file_too_big); |
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199 | return FALSE; |
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200 | } |
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201 | if (len < n) |
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202 | { |
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203 | memcpy (p, buf, len); |
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204 | memset (p + len, ' ', n - len); |
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205 | } |
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206 | else |
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207 | memcpy (p, buf, n); |
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208 | return TRUE; |
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209 | } |
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210 | |||
211 | bfd_boolean |
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212 | _bfd_generic_mkarchive (bfd *abfd) |
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213 | { |
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214 | bfd_size_type amt = sizeof (struct artdata); |
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215 | |||
216 | abfd->tdata.aout_ar_data = (struct artdata *) bfd_zalloc (abfd, amt); |
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217 | if (bfd_ardata (abfd) == NULL) |
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218 | return FALSE; |
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219 | |||
220 | /* Already cleared by bfd_zalloc above. |
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221 | bfd_ardata (abfd)->cache = NULL; |
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222 | bfd_ardata (abfd)->archive_head = NULL; |
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223 | bfd_ardata (abfd)->symdefs = NULL; |
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224 | bfd_ardata (abfd)->extended_names = NULL; |
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225 | bfd_ardata (abfd)->extended_names_size = 0; |
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226 | bfd_ardata (abfd)->tdata = NULL; */ |
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227 | |||
228 | return TRUE; |
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229 | } |
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230 | |||
231 | /* |
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232 | FUNCTION |
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233 | bfd_get_next_mapent |
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234 | |||
235 | SYNOPSIS |
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236 | symindex bfd_get_next_mapent |
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237 | (bfd *abfd, symindex previous, carsym **sym); |
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238 | |||
239 | DESCRIPTION |
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240 | Step through archive @var{abfd}'s symbol table (if it |
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241 | has one). Successively update @var{sym} with the next symbol's |
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242 | information, returning that symbol's (internal) index into the |
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243 | symbol table. |
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244 | |||
245 | Supply < |
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246 | the first one; returns < |
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247 | got the last one. |
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248 | |||
249 | A < |
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250 | user-visible element is its name, a null-terminated string. |
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251 | */ |
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252 | |||
253 | symindex |
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254 | bfd_get_next_mapent (bfd *abfd, symindex prev, carsym **entry) |
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255 | { |
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256 | if (!bfd_has_map (abfd)) |
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257 | { |
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258 | bfd_set_error (bfd_error_invalid_operation); |
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259 | return BFD_NO_MORE_SYMBOLS; |
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260 | } |
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261 | |||
262 | if (prev == BFD_NO_MORE_SYMBOLS) |
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263 | prev = 0; |
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264 | else |
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265 | ++prev; |
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266 | if (prev >= bfd_ardata (abfd)->symdef_count) |
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267 | return BFD_NO_MORE_SYMBOLS; |
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268 | |||
269 | *entry = (bfd_ardata (abfd)->symdefs + prev); |
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270 | return prev; |
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271 | } |
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272 | |||
273 | /* To be called by backends only. */ |
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274 | |||
275 | bfd * |
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276 | _bfd_create_empty_archive_element_shell (bfd *obfd) |
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277 | { |
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278 | return _bfd_new_bfd_contained_in (obfd); |
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279 | } |
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280 | |||
281 | /* |
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282 | FUNCTION |
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283 | bfd_set_archive_head |
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284 | |||
285 | SYNOPSIS |
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286 | bfd_boolean bfd_set_archive_head (bfd *output, bfd *new_head); |
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287 | |||
288 | DESCRIPTION |
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289 | Set the head of the chain of |
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290 | BFDs contained in the archive @var{output} to @var{new_head}. |
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291 | */ |
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292 | |||
293 | bfd_boolean |
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294 | bfd_set_archive_head (bfd *output_archive, bfd *new_head) |
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295 | { |
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296 | output_archive->archive_head = new_head; |
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297 | return TRUE; |
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298 | } |
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299 | |||
300 | bfd * |
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301 | _bfd_look_for_bfd_in_cache (bfd *arch_bfd, file_ptr filepos) |
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302 | { |
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303 | htab_t hash_table = bfd_ardata (arch_bfd)->cache; |
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304 | struct ar_cache m; |
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305 | |||
306 | m.ptr = filepos; |
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307 | |||
308 | if (hash_table) |
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309 | { |
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310 | struct ar_cache *entry = (struct ar_cache *) htab_find (hash_table, &m); |
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311 | if (!entry) |
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312 | return NULL; |
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313 | else |
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314 | return entry->arbfd; |
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315 | } |
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316 | else |
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317 | return NULL; |
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318 | } |
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319 | |||
320 | static hashval_t |
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321 | hash_file_ptr (const void * p) |
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322 | { |
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323 | return (hashval_t) (((struct ar_cache *) p)->ptr); |
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324 | } |
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325 | |||
326 | /* Returns non-zero if P1 and P2 are equal. */ |
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327 | |||
328 | static int |
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329 | eq_file_ptr (const void * p1, const void * p2) |
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330 | { |
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331 | struct ar_cache *arc1 = (struct ar_cache *) p1; |
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332 | struct ar_cache *arc2 = (struct ar_cache *) p2; |
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333 | return arc1->ptr == arc2->ptr; |
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334 | } |
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335 | |||
336 | /* The calloc function doesn't always take size_t (e.g. on VMS) |
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337 | so wrap it to avoid a compile time warning. */ |
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338 | |||
339 | static void * |
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340 | _bfd_calloc_wrapper (size_t a, size_t b) |
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341 | { |
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342 | return calloc (a, b); |
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343 | } |
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344 | |||
345 | /* Kind of stupid to call cons for each one, but we don't do too many. */ |
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346 | |||
347 | bfd_boolean |
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348 | _bfd_add_bfd_to_archive_cache (bfd *arch_bfd, file_ptr filepos, bfd *new_elt) |
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349 | { |
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350 | struct ar_cache *cache; |
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351 | htab_t hash_table = bfd_ardata (arch_bfd)->cache; |
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352 | |||
353 | /* If the hash table hasn't been created, create it. */ |
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354 | if (hash_table == NULL) |
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355 | { |
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356 | hash_table = htab_create_alloc (16, hash_file_ptr, eq_file_ptr, |
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357 | NULL, _bfd_calloc_wrapper, free); |
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358 | if (hash_table == NULL) |
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359 | return FALSE; |
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360 | bfd_ardata (arch_bfd)->cache = hash_table; |
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361 | } |
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362 | |||
363 | /* Insert new_elt into the hash table by filepos. */ |
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364 | cache = (struct ar_cache *) bfd_zalloc (arch_bfd, sizeof (struct ar_cache)); |
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365 | cache->ptr = filepos; |
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366 | cache->arbfd = new_elt; |
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367 | *htab_find_slot (hash_table, (const void *) cache, INSERT) = cache; |
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368 | |||
369 | /* Provide a means of accessing this from child. */ |
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370 | arch_eltdata (new_elt)->parent_cache = hash_table; |
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371 | arch_eltdata (new_elt)->key = filepos; |
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372 | |||
373 | return TRUE; |
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374 | } |
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375 | |||
376 | static bfd * |
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377 | _bfd_find_nested_archive (bfd *arch_bfd, const char *filename) |
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378 | { |
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379 | bfd *abfd; |
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380 | const char *target; |
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381 | |||
382 | /* PR 15140: Don't allow a nested archive pointing to itself. */ |
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383 | if (filename_cmp (filename, arch_bfd->filename) == 0) |
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384 | { |
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385 | bfd_set_error (bfd_error_malformed_archive); |
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386 | return NULL; |
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387 | } |
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388 | |||
389 | for (abfd = arch_bfd->nested_archives; |
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390 | abfd != NULL; |
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391 | abfd = abfd->archive_next) |
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392 | { |
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393 | if (filename_cmp (filename, abfd->filename) == 0) |
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394 | return abfd; |
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395 | } |
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396 | target = NULL; |
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397 | if (!arch_bfd->target_defaulted) |
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398 | target = arch_bfd->xvec->name; |
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399 | abfd = bfd_openr (filename, target); |
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400 | if (abfd) |
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401 | { |
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402 | abfd->archive_next = arch_bfd->nested_archives; |
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403 | arch_bfd->nested_archives = abfd; |
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404 | } |
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405 | return abfd; |
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406 | } |
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407 | |||
408 | /* The name begins with space. Hence the rest of the name is an index into |
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409 | the string table. */ |
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410 | |||
411 | static char * |
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412 | get_extended_arelt_filename (bfd *arch, const char *name, file_ptr *originp) |
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413 | { |
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414 | unsigned long table_index = 0; |
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415 | const char *endp; |
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416 | |||
417 | /* Should extract string so that I can guarantee not to overflow into |
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418 | the next region, but I'm too lazy. */ |
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419 | errno = 0; |
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420 | /* Skip first char, which is '/' in SVR4 or ' ' in some other variants. */ |
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421 | table_index = strtol (name + 1, (char **) &endp, 10); |
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422 | if (errno != 0 || table_index >= bfd_ardata (arch)->extended_names_size) |
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423 | { |
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424 | bfd_set_error (bfd_error_malformed_archive); |
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425 | return NULL; |
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426 | } |
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427 | /* In a thin archive, a member of an archive-within-an-archive |
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428 | will have the offset in the inner archive encoded here. */ |
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429 | if (bfd_is_thin_archive (arch) && endp != NULL && *endp == ':') |
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430 | { |
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431 | file_ptr origin = strtol (endp + 1, NULL, 10); |
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432 | |||
433 | if (errno != 0) |
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434 | { |
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435 | bfd_set_error (bfd_error_malformed_archive); |
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436 | return NULL; |
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437 | } |
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438 | *originp = origin; |
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439 | } |
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440 | else |
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441 | *originp = 0; |
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442 | |||
443 | return bfd_ardata (arch)->extended_names + table_index; |
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444 | } |
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445 | |||
446 | /* This functions reads an arch header and returns an areltdata pointer, or |
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447 | NULL on error. |
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448 | |||
449 | Presumes the file pointer is already in the right place (ie pointing |
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450 | to the ar_hdr in the file). Moves the file pointer; on success it |
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451 | should be pointing to the front of the file contents; on failure it |
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452 | could have been moved arbitrarily. */ |
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453 | |||
454 | void * |
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455 | _bfd_generic_read_ar_hdr (bfd *abfd) |
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456 | { |
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457 | return _bfd_generic_read_ar_hdr_mag (abfd, NULL); |
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458 | } |
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459 | |||
460 | /* Alpha ECOFF uses an optional different ARFMAG value, so we have a |
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461 | variant of _bfd_generic_read_ar_hdr which accepts a magic string. */ |
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462 | |||
463 | void * |
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464 | _bfd_generic_read_ar_hdr_mag (bfd *abfd, const char *mag) |
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465 | { |
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466 | struct ar_hdr hdr; |
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467 | char *hdrp = (char *) &hdr; |
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468 | bfd_size_type parsed_size; |
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469 | struct areltdata *ared; |
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470 | char *filename = NULL; |
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471 | bfd_size_type namelen = 0; |
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472 | bfd_size_type allocsize = sizeof (struct areltdata) + sizeof (struct ar_hdr); |
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473 | char *allocptr = 0; |
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474 | file_ptr origin = 0; |
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475 | unsigned int extra_size = 0; |
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476 | char fmag_save; |
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477 | int scan; |
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478 | |||
479 | if (bfd_bread (hdrp, sizeof (struct ar_hdr), abfd) != sizeof (struct ar_hdr)) |
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480 | { |
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481 | if (bfd_get_error () != bfd_error_system_call) |
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482 | bfd_set_error (bfd_error_no_more_archived_files); |
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483 | return NULL; |
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484 | } |
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485 | if (strncmp (hdr.ar_fmag, ARFMAG, 2) != 0 |
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486 | && (mag == NULL |
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487 | || strncmp (hdr.ar_fmag, mag, 2) != 0)) |
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488 | { |
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489 | bfd_set_error (bfd_error_malformed_archive); |
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490 | return NULL; |
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491 | } |
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492 | |||
493 | errno = 0; |
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494 | fmag_save = hdr.ar_fmag[0]; |
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495 | hdr.ar_fmag[0] = 0; |
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496 | scan = sscanf (hdr.ar_size, "%" BFD_VMA_FMT "u", &parsed_size); |
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497 | hdr.ar_fmag[0] = fmag_save; |
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498 | if (scan != 1) |
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499 | { |
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500 | bfd_set_error (bfd_error_malformed_archive); |
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501 | return NULL; |
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502 | } |
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503 | |||
504 | /* Extract the filename from the archive - there are two ways to |
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505 | specify an extended name table, either the first char of the |
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506 | name is a space, or it's a slash. */ |
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507 | if ((hdr.ar_name[0] == '/' |
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508 | || (hdr.ar_name[0] == ' ' |
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509 | && memchr (hdr.ar_name, '/', ar_maxnamelen (abfd)) == NULL)) |
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510 | && bfd_ardata (abfd)->extended_names != NULL) |
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511 | { |
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512 | filename = get_extended_arelt_filename (abfd, hdr.ar_name, &origin); |
||
513 | if (filename == NULL) |
||
514 | return NULL; |
||
515 | } |
||
516 | /* BSD4.4-style long filename. */ |
||
517 | else if (is_bsd44_extended_name (hdr.ar_name)) |
||
518 | { |
||
519 | /* BSD-4.4 extended name */ |
||
520 | namelen = atoi (&hdr.ar_name[3]); |
||
521 | allocsize += namelen + 1; |
||
522 | parsed_size -= namelen; |
||
523 | extra_size = namelen; |
||
524 | |||
525 | allocptr = (char *) bfd_zmalloc (allocsize); |
||
526 | if (allocptr == NULL) |
||
527 | return NULL; |
||
528 | filename = (allocptr |
||
529 | + sizeof (struct areltdata) |
||
530 | + sizeof (struct ar_hdr)); |
||
531 | if (bfd_bread (filename, namelen, abfd) != namelen) |
||
532 | { |
||
533 | free (allocptr); |
||
534 | if (bfd_get_error () != bfd_error_system_call) |
||
535 | bfd_set_error (bfd_error_no_more_archived_files); |
||
536 | return NULL; |
||
537 | } |
||
538 | filename[namelen] = '\0'; |
||
539 | } |
||
540 | else |
||
541 | { |
||
542 | /* We judge the end of the name by looking for '/' or ' '. |
||
543 | Note: The SYSV format (terminated by '/') allows embedded |
||
544 | spaces, so only look for ' ' if we don't find '/'. */ |
||
545 | |||
546 | char *e; |
||
547 | e = (char *) memchr (hdr.ar_name, '\0', ar_maxnamelen (abfd)); |
||
548 | if (e == NULL) |
||
549 | { |
||
550 | e = (char *) memchr (hdr.ar_name, '/', ar_maxnamelen (abfd)); |
||
551 | if (e == NULL) |
||
552 | e = (char *) memchr (hdr.ar_name, ' ', ar_maxnamelen (abfd)); |
||
553 | } |
||
554 | |||
555 | if (e != NULL) |
||
556 | namelen = e - hdr.ar_name; |
||
557 | else |
||
558 | { |
||
559 | /* If we didn't find a termination character, then the name |
||
560 | must be the entire field. */ |
||
561 | namelen = ar_maxnamelen (abfd); |
||
562 | } |
||
563 | |||
564 | allocsize += namelen + 1; |
||
565 | } |
||
566 | |||
567 | if (!allocptr) |
||
568 | { |
||
569 | allocptr = (char *) bfd_zmalloc (allocsize); |
||
570 | if (allocptr == NULL) |
||
571 | return NULL; |
||
572 | } |
||
573 | |||
574 | ared = (struct areltdata *) allocptr; |
||
575 | |||
576 | ared->arch_header = allocptr + sizeof (struct areltdata); |
||
577 | memcpy (ared->arch_header, &hdr, sizeof (struct ar_hdr)); |
||
578 | ared->parsed_size = parsed_size; |
||
579 | ared->extra_size = extra_size; |
||
580 | ared->origin = origin; |
||
581 | |||
582 | if (filename != NULL) |
||
583 | ared->filename = filename; |
||
584 | else |
||
585 | { |
||
586 | ared->filename = allocptr + (sizeof (struct areltdata) + |
||
587 | sizeof (struct ar_hdr)); |
||
588 | if (namelen) |
||
589 | memcpy (ared->filename, hdr.ar_name, namelen); |
||
590 | ared->filename[namelen] = '\0'; |
||
591 | } |
||
592 | |||
593 | return ared; |
||
594 | } |
||
595 | |||
596 | /* Append the relative pathname for a member of the thin archive |
||
597 | to the pathname of the directory containing the archive. */ |
||
598 | |||
599 | char * |
||
600 | _bfd_append_relative_path (bfd *arch, char *elt_name) |
||
601 | { |
||
602 | const char *arch_name = arch->filename; |
||
603 | const char *base_name = lbasename (arch_name); |
||
604 | size_t prefix_len; |
||
605 | char *filename; |
||
606 | |||
607 | if (base_name == arch_name) |
||
608 | return elt_name; |
||
609 | |||
610 | prefix_len = base_name - arch_name; |
||
611 | filename = (char *) bfd_alloc (arch, prefix_len + strlen (elt_name) + 1); |
||
612 | if (filename == NULL) |
||
613 | return NULL; |
||
614 | |||
615 | strncpy (filename, arch_name, prefix_len); |
||
616 | strcpy (filename + prefix_len, elt_name); |
||
617 | return filename; |
||
618 | } |
||
619 | |||
620 | /* This is an internal function; it's mainly used when indexing |
||
621 | through the archive symbol table, but also used to get the next |
||
622 | element, since it handles the bookkeeping so nicely for us. */ |
||
623 | |||
624 | bfd * |
||
625 | _bfd_get_elt_at_filepos (bfd *archive, file_ptr filepos) |
||
626 | { |
||
627 | struct areltdata *new_areldata; |
||
628 | bfd *n_nfd; |
||
629 | char *filename; |
||
630 | |||
631 | n_nfd = _bfd_look_for_bfd_in_cache (archive, filepos); |
||
632 | if (n_nfd) |
||
633 | return n_nfd; |
||
634 | |||
635 | if (0 > bfd_seek (archive, filepos, SEEK_SET)) |
||
636 | return NULL; |
||
637 | |||
638 | if ((new_areldata = (struct areltdata *) _bfd_read_ar_hdr (archive)) == NULL) |
||
639 | return NULL; |
||
640 | |||
641 | filename = new_areldata->filename; |
||
642 | |||
643 | if (bfd_is_thin_archive (archive)) |
||
644 | { |
||
645 | const char *target; |
||
646 | |||
647 | /* This is a proxy entry for an external file. */ |
||
648 | if (! IS_ABSOLUTE_PATH (filename)) |
||
649 | { |
||
650 | filename = _bfd_append_relative_path (archive, filename); |
||
651 | if (filename == NULL) |
||
652 | { |
||
653 | free (new_areldata); |
||
654 | return NULL; |
||
655 | } |
||
656 | } |
||
657 | |||
658 | if (new_areldata->origin > 0) |
||
659 | { |
||
660 | /* This proxy entry refers to an element of a nested archive. |
||
661 | Locate the member of that archive and return a bfd for it. */ |
||
662 | bfd *ext_arch = _bfd_find_nested_archive (archive, filename); |
||
663 | |||
664 | if (ext_arch == NULL |
||
665 | || ! bfd_check_format (ext_arch, bfd_archive)) |
||
666 | { |
||
667 | free (new_areldata); |
||
668 | return NULL; |
||
669 | } |
||
670 | n_nfd = _bfd_get_elt_at_filepos (ext_arch, new_areldata->origin); |
||
671 | if (n_nfd == NULL) |
||
672 | { |
||
673 | free (new_areldata); |
||
674 | return NULL; |
||
675 | } |
||
676 | n_nfd->proxy_origin = bfd_tell (archive); |
||
677 | return n_nfd; |
||
678 | } |
||
679 | /* It's not an element of a nested archive; |
||
680 | open the external file as a bfd. */ |
||
681 | target = NULL; |
||
682 | if (!archive->target_defaulted) |
||
683 | target = archive->xvec->name; |
||
684 | n_nfd = bfd_openr (filename, target); |
||
685 | if (n_nfd == NULL) |
||
686 | bfd_set_error (bfd_error_malformed_archive); |
||
687 | } |
||
688 | else |
||
689 | { |
||
690 | n_nfd = _bfd_create_empty_archive_element_shell (archive); |
||
691 | } |
||
692 | |||
693 | if (n_nfd == NULL) |
||
694 | { |
||
695 | free (new_areldata); |
||
696 | return NULL; |
||
697 | } |
||
698 | |||
699 | n_nfd->proxy_origin = bfd_tell (archive); |
||
700 | |||
701 | if (bfd_is_thin_archive (archive)) |
||
702 | { |
||
703 | n_nfd->origin = 0; |
||
704 | } |
||
705 | else |
||
706 | { |
||
707 | n_nfd->origin = n_nfd->proxy_origin; |
||
708 | n_nfd->filename = filename; |
||
709 | } |
||
710 | |||
711 | n_nfd->arelt_data = new_areldata; |
||
712 | |||
713 | /* Copy BFD_COMPRESS and BFD_DECOMPRESS flags. */ |
||
714 | n_nfd->flags |= archive->flags & (BFD_COMPRESS | BFD_DECOMPRESS); |
||
715 | |||
716 | if (_bfd_add_bfd_to_archive_cache (archive, filepos, n_nfd)) |
||
717 | return n_nfd; |
||
718 | |||
719 | free (new_areldata); |
||
720 | n_nfd->arelt_data = NULL; |
||
721 | return NULL; |
||
722 | } |
||
723 | |||
724 | /* Return the BFD which is referenced by the symbol in ABFD indexed by |
||
725 | SYM_INDEX. SYM_INDEX should have been returned by bfd_get_next_mapent. */ |
||
726 | |||
727 | bfd * |
||
728 | _bfd_generic_get_elt_at_index (bfd *abfd, symindex sym_index) |
||
729 | { |
||
730 | carsym *entry; |
||
731 | |||
732 | entry = bfd_ardata (abfd)->symdefs + sym_index; |
||
733 | return _bfd_get_elt_at_filepos (abfd, entry->file_offset); |
||
734 | } |
||
735 | |||
736 | /* |
||
737 | FUNCTION |
||
738 | bfd_openr_next_archived_file |
||
739 | |||
740 | SYNOPSIS |
||
741 | bfd *bfd_openr_next_archived_file (bfd *archive, bfd *previous); |
||
742 | |||
743 | DESCRIPTION |
||
744 | Provided a BFD, @var{archive}, containing an archive and NULL, open |
||
745 | an input BFD on the first contained element and returns that. |
||
746 | Subsequent calls should pass |
||
747 | the archive and the previous return value to return a created |
||
748 | BFD to the next contained element. NULL is returned when there |
||
749 | are no more. |
||
750 | */ |
||
751 | |||
752 | bfd * |
||
753 | bfd_openr_next_archived_file (bfd *archive, bfd *last_file) |
||
754 | { |
||
755 | if ((bfd_get_format (archive) != bfd_archive) |
||
756 | || (archive->direction == write_direction)) |
||
757 | { |
||
758 | bfd_set_error (bfd_error_invalid_operation); |
||
759 | return NULL; |
||
760 | } |
||
761 | |||
762 | return BFD_SEND (archive, |
||
763 | openr_next_archived_file, (archive, last_file)); |
||
764 | } |
||
765 | |||
766 | bfd * |
||
767 | bfd_generic_openr_next_archived_file (bfd *archive, bfd *last_file) |
||
768 | { |
||
769 | file_ptr filestart; |
||
770 | |||
771 | if (!last_file) |
||
772 | filestart = bfd_ardata (archive)->first_file_filepos; |
||
773 | else |
||
774 | { |
||
775 | bfd_size_type size = arelt_size (last_file); |
||
776 | |||
777 | filestart = last_file->proxy_origin; |
||
778 | if (! bfd_is_thin_archive (archive)) |
||
779 | filestart += size; |
||
780 | /* Pad to an even boundary... |
||
781 | Note that last_file->origin can be odd in the case of |
||
782 | BSD-4.4-style element with a long odd size. */ |
||
783 | filestart += filestart % 2; |
||
784 | } |
||
785 | |||
786 | return _bfd_get_elt_at_filepos (archive, filestart); |
||
787 | } |
||
788 | |||
789 | const bfd_target * |
||
790 | bfd_generic_archive_p (bfd *abfd) |
||
791 | { |
||
792 | struct artdata *tdata_hold; |
||
793 | char armag[SARMAG + 1]; |
||
794 | bfd_size_type amt; |
||
795 | |||
796 | if (bfd_bread (armag, SARMAG, abfd) != SARMAG) |
||
797 | { |
||
798 | if (bfd_get_error () != bfd_error_system_call) |
||
799 | bfd_set_error (bfd_error_wrong_format); |
||
800 | return NULL; |
||
801 | } |
||
802 | |||
803 | bfd_is_thin_archive (abfd) = (strncmp (armag, ARMAGT, SARMAG) == 0); |
||
804 | |||
805 | if (strncmp (armag, ARMAG, SARMAG) != 0 |
||
806 | && strncmp (armag, ARMAGB, SARMAG) != 0 |
||
807 | && ! bfd_is_thin_archive (abfd)) |
||
808 | return NULL; |
||
809 | |||
810 | tdata_hold = bfd_ardata (abfd); |
||
811 | |||
812 | amt = sizeof (struct artdata); |
||
813 | bfd_ardata (abfd) = (struct artdata *) bfd_zalloc (abfd, amt); |
||
814 | if (bfd_ardata (abfd) == NULL) |
||
815 | { |
||
816 | bfd_ardata (abfd) = tdata_hold; |
||
817 | return NULL; |
||
818 | } |
||
819 | |||
820 | bfd_ardata (abfd)->first_file_filepos = SARMAG; |
||
821 | /* Cleared by bfd_zalloc above. |
||
822 | bfd_ardata (abfd)->cache = NULL; |
||
823 | bfd_ardata (abfd)->archive_head = NULL; |
||
824 | bfd_ardata (abfd)->symdefs = NULL; |
||
825 | bfd_ardata (abfd)->extended_names = NULL; |
||
826 | bfd_ardata (abfd)->extended_names_size = 0; |
||
827 | bfd_ardata (abfd)->tdata = NULL; */ |
||
828 | |||
829 | if (!BFD_SEND (abfd, _bfd_slurp_armap, (abfd)) |
||
830 | || !BFD_SEND (abfd, _bfd_slurp_extended_name_table, (abfd))) |
||
831 | { |
||
832 | if (bfd_get_error () != bfd_error_system_call) |
||
833 | bfd_set_error (bfd_error_wrong_format); |
||
834 | bfd_release (abfd, bfd_ardata (abfd)); |
||
835 | bfd_ardata (abfd) = tdata_hold; |
||
836 | return NULL; |
||
837 | } |
||
838 | |||
839 | if (abfd->target_defaulted && bfd_has_map (abfd)) |
||
840 | { |
||
841 | bfd *first; |
||
842 | |||
843 | /* This archive has a map, so we may presume that the contents |
||
844 | are object files. Make sure that if the first file in the |
||
845 | archive can be recognized as an object file, it is for this |
||
846 | target. If not, assume that this is the wrong format. If |
||
847 | the first file is not an object file, somebody is doing |
||
848 | something weird, and we permit it so that ar -t will work. |
||
849 | |||
850 | This is done because any normal format will recognize any |
||
851 | normal archive, regardless of the format of the object files. |
||
852 | We do accept an empty archive. */ |
||
853 | |||
854 | first = bfd_openr_next_archived_file (abfd, NULL); |
||
855 | if (first != NULL) |
||
856 | { |
||
857 | first->target_defaulted = FALSE; |
||
858 | if (bfd_check_format (first, bfd_object) |
||
859 | && first->xvec != abfd->xvec) |
||
860 | bfd_set_error (bfd_error_wrong_object_format); |
||
861 | /* And we ought to close `first' here too. */ |
||
862 | } |
||
863 | } |
||
864 | |||
865 | return abfd->xvec; |
||
866 | } |
||
867 | |||
868 | /* Some constants for a 32 bit BSD archive structure. We do not |
||
869 | support 64 bit archives presently; so far as I know, none actually |
||
870 | exist. Supporting them would require changing these constants, and |
||
871 | changing some H_GET_32 to H_GET_64. */ |
||
872 | |||
873 | /* The size of an external symdef structure. */ |
||
874 | #define BSD_SYMDEF_SIZE 8 |
||
875 | |||
876 | /* The offset from the start of a symdef structure to the file offset. */ |
||
877 | #define BSD_SYMDEF_OFFSET_SIZE 4 |
||
878 | |||
879 | /* The size of the symdef count. */ |
||
880 | #define BSD_SYMDEF_COUNT_SIZE 4 |
||
881 | |||
882 | /* The size of the string count. */ |
||
883 | #define BSD_STRING_COUNT_SIZE 4 |
||
884 | |||
885 | /* Read a BSD-style archive symbol table. Returns FALSE on error, |
||
886 | TRUE otherwise. */ |
||
887 | |||
888 | static bfd_boolean |
||
889 | do_slurp_bsd_armap (bfd *abfd) |
||
890 | { |
||
891 | struct areltdata *mapdata; |
||
892 | unsigned int counter; |
||
893 | bfd_byte *raw_armap, *rbase; |
||
894 | struct artdata *ardata = bfd_ardata (abfd); |
||
895 | char *stringbase; |
||
896 | bfd_size_type parsed_size, amt; |
||
897 | carsym *set; |
||
898 | |||
899 | mapdata = (struct areltdata *) _bfd_read_ar_hdr (abfd); |
||
900 | if (mapdata == NULL) |
||
901 | return FALSE; |
||
902 | parsed_size = mapdata->parsed_size; |
||
903 | free (mapdata); |
||
904 | |||
905 | raw_armap = (bfd_byte *) bfd_zalloc (abfd, parsed_size); |
||
906 | if (raw_armap == NULL) |
||
907 | return FALSE; |
||
908 | |||
909 | if (bfd_bread (raw_armap, parsed_size, abfd) != parsed_size) |
||
910 | { |
||
911 | if (bfd_get_error () != bfd_error_system_call) |
||
912 | bfd_set_error (bfd_error_malformed_archive); |
||
913 | byebye: |
||
914 | bfd_release (abfd, raw_armap); |
||
915 | return FALSE; |
||
916 | } |
||
917 | |||
918 | ardata->symdef_count = H_GET_32 (abfd, raw_armap) / BSD_SYMDEF_SIZE; |
||
919 | |||
920 | if (ardata->symdef_count * BSD_SYMDEF_SIZE > |
||
921 | parsed_size - BSD_SYMDEF_COUNT_SIZE) |
||
922 | { |
||
923 | /* Probably we're using the wrong byte ordering. */ |
||
924 | bfd_set_error (bfd_error_wrong_format); |
||
925 | goto byebye; |
||
926 | } |
||
927 | |||
928 | ardata->cache = 0; |
||
929 | rbase = raw_armap + BSD_SYMDEF_COUNT_SIZE; |
||
930 | stringbase = ((char *) rbase |
||
931 | + ardata->symdef_count * BSD_SYMDEF_SIZE |
||
932 | + BSD_STRING_COUNT_SIZE); |
||
933 | amt = ardata->symdef_count * sizeof (carsym); |
||
934 | ardata->symdefs = (struct carsym *) bfd_alloc (abfd, amt); |
||
935 | if (!ardata->symdefs) |
||
936 | return FALSE; |
||
937 | |||
938 | for (counter = 0, set = ardata->symdefs; |
||
939 | counter < ardata->symdef_count; |
||
940 | counter++, set++, rbase += BSD_SYMDEF_SIZE) |
||
941 | { |
||
942 | set->name = H_GET_32 (abfd, rbase) + stringbase; |
||
943 | set->file_offset = H_GET_32 (abfd, rbase + BSD_SYMDEF_OFFSET_SIZE); |
||
944 | } |
||
945 | |||
946 | ardata->first_file_filepos = bfd_tell (abfd); |
||
947 | /* Pad to an even boundary if you have to. */ |
||
948 | ardata->first_file_filepos += (ardata->first_file_filepos) % 2; |
||
949 | /* FIXME, we should provide some way to free raw_ardata when |
||
950 | we are done using the strings from it. For now, it seems |
||
951 | to be allocated on an objalloc anyway... */ |
||
952 | bfd_has_map (abfd) = TRUE; |
||
953 | return TRUE; |
||
954 | } |
||
955 | |||
956 | /* Read a COFF archive symbol table. Returns FALSE on error, TRUE |
||
957 | otherwise. */ |
||
958 | |||
959 | static bfd_boolean |
||
960 | do_slurp_coff_armap (bfd *abfd) |
||
961 | { |
||
962 | struct areltdata *mapdata; |
||
963 | int *raw_armap, *rawptr; |
||
964 | struct artdata *ardata = bfd_ardata (abfd); |
||
965 | char *stringbase; |
||
966 | bfd_size_type stringsize; |
||
967 | bfd_size_type parsed_size; |
||
968 | carsym *carsyms; |
||
969 | bfd_size_type nsymz; /* Number of symbols in armap. */ |
||
970 | bfd_vma (*swap) (const void *); |
||
971 | char int_buf[sizeof (long)]; |
||
972 | bfd_size_type carsym_size, ptrsize; |
||
973 | unsigned int i; |
||
974 | |||
975 | mapdata = (struct areltdata *) _bfd_read_ar_hdr (abfd); |
||
976 | if (mapdata == NULL) |
||
977 | return FALSE; |
||
978 | parsed_size = mapdata->parsed_size; |
||
979 | free (mapdata); |
||
980 | |||
981 | if (bfd_bread (int_buf, 4, abfd) != 4) |
||
982 | { |
||
983 | if (bfd_get_error () != bfd_error_system_call) |
||
984 | bfd_set_error (bfd_error_malformed_archive); |
||
985 | return FALSE; |
||
986 | } |
||
987 | /* It seems that all numeric information in a coff archive is always |
||
988 | in big endian format, nomatter the host or target. */ |
||
989 | swap = bfd_getb32; |
||
990 | nsymz = bfd_getb32 (int_buf); |
||
991 | stringsize = parsed_size - (4 * nsymz) - 4; |
||
992 | |||
993 | /* ... except that some archive formats are broken, and it may be our |
||
994 | fault - the i960 little endian coff sometimes has big and sometimes |
||
995 | little, because our tools changed. Here's a horrible hack to clean |
||
996 | up the crap. */ |
||
997 | |||
998 | if (stringsize > 0xfffff |
||
999 | && bfd_get_arch (abfd) == bfd_arch_i960 |
||
1000 | && bfd_get_flavour (abfd) == bfd_target_coff_flavour) |
||
1001 | { |
||
1002 | /* This looks dangerous, let's do it the other way around. */ |
||
1003 | nsymz = bfd_getl32 (int_buf); |
||
1004 | stringsize = parsed_size - (4 * nsymz) - 4; |
||
1005 | swap = bfd_getl32; |
||
1006 | } |
||
1007 | |||
1008 | /* The coff armap must be read sequentially. So we construct a |
||
1009 | bsd-style one in core all at once, for simplicity. */ |
||
1010 | |||
1011 | if (nsymz > ~ (bfd_size_type) 0 / sizeof (carsym)) |
||
1012 | return FALSE; |
||
1013 | |||
1014 | carsym_size = (nsymz * sizeof (carsym)); |
||
1015 | ptrsize = (4 * nsymz); |
||
1016 | |||
1017 | if (carsym_size + stringsize + 1 <= carsym_size) |
||
1018 | return FALSE; |
||
1019 | |||
1020 | ardata->symdefs = (struct carsym *) bfd_zalloc (abfd, |
||
1021 | carsym_size + stringsize + 1); |
||
1022 | if (ardata->symdefs == NULL) |
||
1023 | return FALSE; |
||
1024 | carsyms = ardata->symdefs; |
||
1025 | stringbase = ((char *) ardata->symdefs) + carsym_size; |
||
1026 | |||
1027 | /* Allocate and read in the raw offsets. */ |
||
1028 | raw_armap = (int *) bfd_alloc (abfd, ptrsize); |
||
1029 | if (raw_armap == NULL) |
||
1030 | goto release_symdefs; |
||
1031 | if (bfd_bread (raw_armap, ptrsize, abfd) != ptrsize |
||
1032 | || (bfd_bread (stringbase, stringsize, abfd) != stringsize)) |
||
1033 | { |
||
1034 | if (bfd_get_error () != bfd_error_system_call) |
||
1035 | bfd_set_error (bfd_error_malformed_archive); |
||
1036 | goto release_raw_armap; |
||
1037 | } |
||
1038 | |||
1039 | /* OK, build the carsyms. */ |
||
1040 | for (i = 0; i < nsymz; i++) |
||
1041 | { |
||
1042 | rawptr = raw_armap + i; |
||
1043 | carsyms->file_offset = swap ((bfd_byte *) rawptr); |
||
1044 | carsyms->name = stringbase; |
||
1045 | stringbase += strlen (stringbase) + 1; |
||
1046 | carsyms++; |
||
1047 | } |
||
1048 | *stringbase = 0; |
||
1049 | |||
1050 | ardata->symdef_count = nsymz; |
||
1051 | ardata->first_file_filepos = bfd_tell (abfd); |
||
1052 | /* Pad to an even boundary if you have to. */ |
||
1053 | ardata->first_file_filepos += (ardata->first_file_filepos) % 2; |
||
1054 | |||
1055 | bfd_has_map (abfd) = TRUE; |
||
1056 | bfd_release (abfd, raw_armap); |
||
1057 | |||
1058 | /* Check for a second archive header (as used by PE). */ |
||
1059 | { |
||
1060 | struct areltdata *tmp; |
||
1061 | |||
1062 | bfd_seek (abfd, ardata->first_file_filepos, SEEK_SET); |
||
1063 | tmp = (struct areltdata *) _bfd_read_ar_hdr (abfd); |
||
1064 | if (tmp != NULL) |
||
1065 | { |
||
1066 | if (tmp->arch_header[0] == '/' |
||
1067 | && tmp->arch_header[1] == ' ') |
||
1068 | { |
||
1069 | ardata->first_file_filepos += |
||
1070 | (tmp->parsed_size + sizeof (struct ar_hdr) + 1) & ~(unsigned) 1; |
||
1071 | } |
||
1072 | free (tmp); |
||
1073 | } |
||
1074 | } |
||
1075 | |||
1076 | return TRUE; |
||
1077 | |||
1078 | release_raw_armap: |
||
1079 | bfd_release (abfd, raw_armap); |
||
1080 | release_symdefs: |
||
1081 | bfd_release (abfd, (ardata)->symdefs); |
||
1082 | return FALSE; |
||
1083 | } |
||
1084 | |||
1085 | /* This routine can handle either coff-style or bsd-style armaps |
||
1086 | (archive symbol table). Returns FALSE on error, TRUE otherwise */ |
||
1087 | |||
1088 | bfd_boolean |
||
1089 | bfd_slurp_armap (bfd *abfd) |
||
1090 | { |
||
1091 | char nextname[17]; |
||
1092 | int i = bfd_bread (nextname, 16, abfd); |
||
1093 | |||
1094 | if (i == 0) |
||
1095 | return TRUE; |
||
1096 | if (i != 16) |
||
1097 | return FALSE; |
||
1098 | |||
1099 | if (bfd_seek (abfd, (file_ptr) -16, SEEK_CUR) != 0) |
||
1100 | return FALSE; |
||
1101 | |||
1102 | if (CONST_STRNEQ (nextname, "__.SYMDEF ") |
||
1103 | || CONST_STRNEQ (nextname, "__.SYMDEF/ ")) /* Old Linux archives. */ |
||
1104 | return do_slurp_bsd_armap (abfd); |
||
1105 | else if (CONST_STRNEQ (nextname, "/ ")) |
||
1106 | return do_slurp_coff_armap (abfd); |
||
1107 | else if (CONST_STRNEQ (nextname, "/SYM64/ ")) |
||
1108 | { |
||
1109 | /* 64bit ELF (Irix 6) archive. */ |
||
1110 | #ifdef BFD64 |
||
1111 | extern bfd_boolean bfd_elf64_archive_slurp_armap (bfd *); |
||
1112 | return bfd_elf64_archive_slurp_armap (abfd); |
||
1113 | #else |
||
1114 | bfd_set_error (bfd_error_wrong_format); |
||
1115 | return FALSE; |
||
1116 | #endif |
||
1117 | } |
||
1118 | else if (CONST_STRNEQ (nextname, "#1/20 ")) |
||
1119 | { |
||
1120 | /* Mach-O has a special name for armap when the map is sorted by name. |
||
1121 | However because this name has a space it is slightly more difficult |
||
1122 | to check it. */ |
||
1123 | struct ar_hdr hdr; |
||
1124 | char extname[21]; |
||
1125 | |||
1126 | if (bfd_bread (&hdr, sizeof (hdr), abfd) != sizeof (hdr)) |
||
1127 | return FALSE; |
||
1128 | /* Read the extended name. We know its length. */ |
||
1129 | if (bfd_bread (extname, 20, abfd) != 20) |
||
1130 | return FALSE; |
||
1131 | if (bfd_seek (abfd, -(file_ptr) (sizeof (hdr) + 20), SEEK_CUR) != 0) |
||
1132 | return FALSE; |
||
1133 | if (CONST_STRNEQ (extname, "__.SYMDEF SORTED") |
||
1134 | || CONST_STRNEQ (extname, "__.SYMDEF")) |
||
1135 | return do_slurp_bsd_armap (abfd); |
||
1136 | } |
||
1137 | |||
1138 | bfd_has_map (abfd) = FALSE; |
||
1139 | return TRUE; |
||
1140 | } |
||
1141 | |||
1142 | /* Returns FALSE on error, TRUE otherwise. */ |
||
1143 | /* Flavor 2 of a bsd armap, similar to bfd_slurp_bsd_armap except the |
||
1144 | header is in a slightly different order and the map name is '/'. |
||
1145 | This flavour is used by hp300hpux. */ |
||
1146 | |||
1147 | #define HPUX_SYMDEF_COUNT_SIZE 2 |
||
1148 | |||
1149 | bfd_boolean |
||
1150 | bfd_slurp_bsd_armap_f2 (bfd *abfd) |
||
1151 | { |
||
1152 | struct areltdata *mapdata; |
||
1153 | char nextname[17]; |
||
1154 | unsigned int counter; |
||
1155 | bfd_byte *raw_armap, *rbase; |
||
1156 | struct artdata *ardata = bfd_ardata (abfd); |
||
1157 | char *stringbase; |
||
1158 | unsigned int stringsize; |
||
1159 | unsigned int left; |
||
1160 | bfd_size_type amt; |
||
1161 | carsym *set; |
||
1162 | int i = bfd_bread (nextname, 16, abfd); |
||
1163 | |||
1164 | if (i == 0) |
||
1165 | return TRUE; |
||
1166 | if (i != 16) |
||
1167 | return FALSE; |
||
1168 | |||
1169 | /* The archive has at least 16 bytes in it. */ |
||
1170 | if (bfd_seek (abfd, (file_ptr) -16, SEEK_CUR) != 0) |
||
1171 | return FALSE; |
||
1172 | |||
1173 | if (CONST_STRNEQ (nextname, "__.SYMDEF ") |
||
1174 | || CONST_STRNEQ (nextname, "__.SYMDEF/ ")) /* Old Linux archives. */ |
||
1175 | return do_slurp_bsd_armap (abfd); |
||
1176 | |||
1177 | if (! CONST_STRNEQ (nextname, "/ ")) |
||
1178 | { |
||
1179 | bfd_has_map (abfd) = FALSE; |
||
1180 | return TRUE; |
||
1181 | } |
||
1182 | |||
1183 | mapdata = (struct areltdata *) _bfd_read_ar_hdr (abfd); |
||
1184 | if (mapdata == NULL) |
||
1185 | return FALSE; |
||
1186 | |||
1187 | if (mapdata->parsed_size < HPUX_SYMDEF_COUNT_SIZE + BSD_STRING_COUNT_SIZE) |
||
1188 | { |
||
1189 | free (mapdata); |
||
1190 | wrong_format: |
||
1191 | bfd_set_error (bfd_error_wrong_format); |
||
1192 | byebye: |
||
1193 | return FALSE; |
||
1194 | } |
||
1195 | left = mapdata->parsed_size - HPUX_SYMDEF_COUNT_SIZE - BSD_STRING_COUNT_SIZE; |
||
1196 | |||
1197 | amt = mapdata->parsed_size; |
||
1198 | free (mapdata); |
||
1199 | |||
1200 | raw_armap = (bfd_byte *) bfd_zalloc (abfd, amt); |
||
1201 | if (raw_armap == NULL) |
||
1202 | goto byebye; |
||
1203 | |||
1204 | if (bfd_bread (raw_armap, amt, abfd) != amt) |
||
1205 | { |
||
1206 | if (bfd_get_error () != bfd_error_system_call) |
||
1207 | bfd_set_error (bfd_error_malformed_archive); |
||
1208 | goto byebye; |
||
1209 | } |
||
1210 | |||
1211 | ardata->symdef_count = H_GET_16 (abfd, raw_armap); |
||
1212 | |||
1213 | ardata->cache = 0; |
||
1214 | |||
1215 | stringsize = H_GET_32 (abfd, raw_armap + HPUX_SYMDEF_COUNT_SIZE); |
||
1216 | if (stringsize > left) |
||
1217 | goto wrong_format; |
||
1218 | left -= stringsize; |
||
1219 | |||
1220 | /* Skip sym count and string sz. */ |
||
1221 | stringbase = ((char *) raw_armap |
||
1222 | + HPUX_SYMDEF_COUNT_SIZE |
||
1223 | + BSD_STRING_COUNT_SIZE); |
||
1224 | rbase = (bfd_byte *) stringbase + stringsize; |
||
1225 | amt = ardata->symdef_count * BSD_SYMDEF_SIZE; |
||
1226 | if (amt > left) |
||
1227 | goto wrong_format; |
||
1228 | |||
1229 | ardata->symdefs = (struct carsym *) bfd_alloc (abfd, amt); |
||
1230 | if (!ardata->symdefs) |
||
1231 | return FALSE; |
||
1232 | |||
1233 | for (counter = 0, set = ardata->symdefs; |
||
1234 | counter < ardata->symdef_count; |
||
1235 | counter++, set++, rbase += BSD_SYMDEF_SIZE) |
||
1236 | { |
||
1237 | set->name = H_GET_32 (abfd, rbase) + stringbase; |
||
1238 | set->file_offset = H_GET_32 (abfd, rbase + BSD_SYMDEF_OFFSET_SIZE); |
||
1239 | } |
||
1240 | |||
1241 | ardata->first_file_filepos = bfd_tell (abfd); |
||
1242 | /* Pad to an even boundary if you have to. */ |
||
1243 | ardata->first_file_filepos += (ardata->first_file_filepos) % 2; |
||
1244 | /* FIXME, we should provide some way to free raw_ardata when |
||
1245 | we are done using the strings from it. For now, it seems |
||
1246 | to be allocated on an objalloc anyway... */ |
||
1247 | bfd_has_map (abfd) = TRUE; |
||
1248 | return TRUE; |
||
1249 | } |
||
1250 | |||
1251 | /** Extended name table. |
||
1252 | |||
1253 | Normally archives support only 14-character filenames. |
||
1254 | |||
1255 | Intel has extended the format: longer names are stored in a special |
||
1256 | element (the first in the archive, or second if there is an armap); |
||
1257 | the name in the ar_hdr is replaced by |
||
1258 | element>. Index is the P.R. of an int (decimal). Data General have |
||
1259 | extended the format by using the prefix // for the special element. */ |
||
1260 | |||
1261 | /* Returns FALSE on error, TRUE otherwise. */ |
||
1262 | |||
1263 | bfd_boolean |
||
1264 | _bfd_slurp_extended_name_table (bfd *abfd) |
||
1265 | { |
||
1266 | char nextname[17]; |
||
1267 | struct areltdata *namedata; |
||
1268 | bfd_size_type amt; |
||
1269 | |||
1270 | /* FIXME: Formatting sucks here, and in case of failure of BFD_READ, |
||
1271 | we probably don't want to return TRUE. */ |
||
1272 | if (bfd_seek (abfd, bfd_ardata (abfd)->first_file_filepos, SEEK_SET) != 0) |
||
1273 | return FALSE; |
||
1274 | |||
1275 | if (bfd_bread (nextname, 16, abfd) == 16) |
||
1276 | { |
||
1277 | if (bfd_seek (abfd, (file_ptr) -16, SEEK_CUR) != 0) |
||
1278 | return FALSE; |
||
1279 | |||
1280 | if (! CONST_STRNEQ (nextname, "ARFILENAMES/ ") |
||
1281 | && ! CONST_STRNEQ (nextname, "// ")) |
||
1282 | { |
||
1283 | bfd_ardata (abfd)->extended_names = NULL; |
||
1284 | bfd_ardata (abfd)->extended_names_size = 0; |
||
1285 | return TRUE; |
||
1286 | } |
||
1287 | |||
1288 | namedata = (struct areltdata *) _bfd_read_ar_hdr (abfd); |
||
1289 | if (namedata == NULL) |
||
1290 | return FALSE; |
||
1291 | |||
1292 | amt = namedata->parsed_size; |
||
1293 | if (amt + 1 == 0) |
||
1294 | goto byebye; |
||
1295 | |||
1296 | bfd_ardata (abfd)->extended_names_size = amt; |
||
1297 | bfd_ardata (abfd)->extended_names = (char *) bfd_zalloc (abfd, amt + 1); |
||
1298 | if (bfd_ardata (abfd)->extended_names == NULL) |
||
1299 | { |
||
1300 | byebye: |
||
1301 | free (namedata); |
||
1302 | return FALSE; |
||
1303 | } |
||
1304 | |||
1305 | if (bfd_bread (bfd_ardata (abfd)->extended_names, amt, abfd) != amt) |
||
1306 | { |
||
1307 | if (bfd_get_error () != bfd_error_system_call) |
||
1308 | bfd_set_error (bfd_error_malformed_archive); |
||
1309 | bfd_release (abfd, (bfd_ardata (abfd)->extended_names)); |
||
1310 | bfd_ardata (abfd)->extended_names = NULL; |
||
1311 | goto byebye; |
||
1312 | } |
||
1313 | |||
1314 | /* Since the archive is supposed to be printable if it contains |
||
1315 | text, the entries in the list are newline-padded, not null |
||
1316 | padded. In SVR4-style archives, the names also have a |
||
1317 | trailing '/'. DOS/NT created archive often have \ in them |
||
1318 | We'll fix all problems here.. */ |
||
1319 | { |
||
1320 | char *ext_names = bfd_ardata (abfd)->extended_names; |
||
1321 | char *temp = ext_names; |
||
1322 | char *limit = temp + namedata->parsed_size; |
||
1323 | for (; temp < limit; ++temp) |
||
1324 | { |
||
1325 | if (*temp == ARFMAG[1]) |
||
1326 | temp[temp > ext_names && temp[-1] == '/' ? -1 : 0] = '\0'; |
||
1327 | if (*temp == '\\') |
||
1328 | *temp = '/'; |
||
1329 | } |
||
1330 | *limit = '\0'; |
||
1331 | } |
||
1332 | |||
1333 | /* Pad to an even boundary if you have to. */ |
||
1334 | bfd_ardata (abfd)->first_file_filepos = bfd_tell (abfd); |
||
1335 | bfd_ardata (abfd)->first_file_filepos += |
||
1336 | (bfd_ardata (abfd)->first_file_filepos) % 2; |
||
1337 | |||
1338 | free (namedata); |
||
1339 | } |
||
1340 | return TRUE; |
||
1341 | } |
||
1342 | |||
1343 | #ifdef VMS |
||
1344 | |||
1345 | /* Return a copy of the stuff in the filename between any :]> and a |
||
1346 | semicolon. */ |
||
1347 | |||
1348 | static const char * |
||
1349 | normalize (bfd *abfd, const char *file) |
||
1350 | { |
||
1351 | const char *first; |
||
1352 | const char *last; |
||
1353 | char *copy; |
||
1354 | |||
1355 | first = file + strlen (file) - 1; |
||
1356 | last = first + 1; |
||
1357 | |||
1358 | while (first != file) |
||
1359 | { |
||
1360 | if (*first == ';') |
||
1361 | last = first; |
||
1362 | if (*first == ':' || *first == ']' || *first == '>') |
||
1363 | { |
||
1364 | first++; |
||
1365 | break; |
||
1366 | } |
||
1367 | first--; |
||
1368 | } |
||
1369 | |||
1370 | copy = bfd_alloc (abfd, last - first + 1); |
||
1371 | if (copy == NULL) |
||
1372 | return NULL; |
||
1373 | |||
1374 | memcpy (copy, first, last - first); |
||
1375 | copy[last - first] = 0; |
||
1376 | |||
1377 | return copy; |
||
1378 | } |
||
1379 | |||
1380 | #else |
||
1381 | static const char * |
||
1382 | normalize (bfd *abfd ATTRIBUTE_UNUSED, const char *file) |
||
1383 | { |
||
1384 | return lbasename (file); |
||
1385 | } |
||
1386 | #endif |
||
1387 | |||
1388 | /* Adjust a relative path name based on the reference path. |
||
1389 | For example: |
||
1390 | |||
1391 | Relative path Reference path Result |
||
1392 | ------------- -------------- ------ |
||
1393 | bar.o lib.a bar.o |
||
1394 | foo/bar.o lib.a foo/bar.o |
||
1395 | bar.o foo/lib.a ../bar.o |
||
1396 | foo/bar.o baz/lib.a ../foo/bar.o |
||
1397 | bar.o ../lib.a |
||
1398 | ; ../bar.o ../lib.a bar.o |
||
1399 | ; ../bar.o lib.a ../bar.o |
||
1400 | foo/bar.o ../lib.a |
||
1401 | bar.o ../../lib.a |
||
1402 | bar.o foo/baz/lib.a ../../bar.o |
||
1403 | |||
1404 | Note - the semicolons above are there to prevent the BFD chew |
||
1405 | utility from interpreting those lines as prototypes to put into |
||
1406 | the autogenerated bfd.h header... |
||
1407 | |||
1408 | Note - the string is returned in a static buffer. */ |
||
1409 | |||
1410 | static const char * |
||
1411 | adjust_relative_path (const char * path, const char * ref_path) |
||
1412 | { |
||
1413 | static char *pathbuf = NULL; |
||
1414 | static unsigned int pathbuf_len = 0; |
||
1415 | const char *pathp; |
||
1416 | const char *refp; |
||
1417 | char * lpath; |
||
1418 | char * rpath; |
||
1419 | unsigned int len; |
||
1420 | unsigned int dir_up = 0; |
||
1421 | unsigned int dir_down = 0; |
||
1422 | char *newp; |
||
1423 | char * pwd = getpwd (); |
||
1424 | const char * down; |
||
1425 | |||
1426 | /* Remove symlinks, '.' and '..' from the paths, if possible. */ |
||
1427 | lpath = lrealpath (path); |
||
1428 | pathp = lpath == NULL ? path : lpath; |
||
1429 | |||
1430 | rpath = lrealpath (ref_path); |
||
1431 | refp = rpath == NULL ? ref_path : rpath; |
||
1432 | |||
1433 | /* Remove common leading path elements. */ |
||
1434 | for (;;) |
||
1435 | { |
||
1436 | const char *e1 = pathp; |
||
1437 | const char *e2 = refp; |
||
1438 | |||
1439 | while (*e1 && ! IS_DIR_SEPARATOR (*e1)) |
||
1440 | ++e1; |
||
1441 | while (*e2 && ! IS_DIR_SEPARATOR (*e2)) |
||
1442 | ++e2; |
||
1443 | if (*e1 == '\0' || *e2 == '\0' || e1 - pathp != e2 - refp |
||
1444 | || filename_ncmp (pathp, refp, e1 - pathp) != 0) |
||
1445 | break; |
||
1446 | pathp = e1 + 1; |
||
1447 | refp = e2 + 1; |
||
1448 | } |
||
1449 | |||
1450 | len = strlen (pathp) + 1; |
||
1451 | /* For each leading path element in the reference path, |
||
1452 | insert "../" into the path. */ |
||
1453 | for (; *refp; ++refp) |
||
1454 | if (IS_DIR_SEPARATOR (*refp)) |
||
1455 | { |
||
1456 | /* PR 12710: If the path element is "../" then instead of |
||
1457 | inserting "../" we need to insert the name of the directory |
||
1458 | at the current level. */ |
||
1459 | if (refp > ref_path + 1 |
||
1460 | && refp[-1] == '.' |
||
1461 | && refp[-2] == '.') |
||
1462 | dir_down ++; |
||
1463 | else |
||
1464 | dir_up ++; |
||
1465 | } |
||
1466 | |||
1467 | /* If the lrealpath calls above succeeded then we should never |
||
1468 | see dir_up and dir_down both being non-zero. */ |
||
1469 | |||
1470 | len += 3 * dir_up; |
||
1471 | |||
1472 | if (dir_down) |
||
1473 | { |
||
1474 | down = pwd + strlen (pwd) - 1; |
||
1475 | |||
1476 | while (dir_down && down > pwd) |
||
1477 | { |
||
1478 | if (IS_DIR_SEPARATOR (*down)) |
||
1479 | --dir_down; |
||
1480 | } |
||
1481 | BFD_ASSERT (dir_down == 0); |
||
1482 | len += strlen (down) + 1; |
||
1483 | } |
||
1484 | else |
||
1485 | down = NULL; |
||
1486 | |||
1487 | if (len > pathbuf_len) |
||
1488 | { |
||
1489 | if (pathbuf != NULL) |
||
1490 | free (pathbuf); |
||
1491 | pathbuf_len = 0; |
||
1492 | pathbuf = (char *) bfd_malloc (len); |
||
1493 | if (pathbuf == NULL) |
||
1494 | goto out; |
||
1495 | pathbuf_len = len; |
||
1496 | } |
||
1497 | |||
1498 | newp = pathbuf; |
||
1499 | while (dir_up-- > 0) |
||
1500 | { |
||
1501 | /* FIXME: Support Windows style path separators as well. */ |
||
1502 | strcpy (newp, "../"); |
||
1503 | newp += 3; |
||
1504 | } |
||
1505 | |||
1506 | if (down) |
||
1507 | sprintf (newp, "%s/%s", down, pathp); |
||
1508 | else |
||
1509 | strcpy (newp, pathp); |
||
1510 | |||
1511 | out: |
||
1512 | free (lpath); |
||
1513 | free (rpath); |
||
1514 | return pathbuf; |
||
1515 | } |
||
1516 | |||
1517 | /* Build a BFD style extended name table. */ |
||
1518 | |||
1519 | bfd_boolean |
||
1520 | _bfd_archive_bsd_construct_extended_name_table (bfd *abfd, |
||
1521 | char **tabloc, |
||
1522 | bfd_size_type *tablen, |
||
1523 | const char **name) |
||
1524 | { |
||
1525 | *name = "ARFILENAMES/"; |
||
1526 | return _bfd_construct_extended_name_table (abfd, FALSE, tabloc, tablen); |
||
1527 | } |
||
1528 | |||
1529 | /* Build an SVR4 style extended name table. */ |
||
1530 | |||
1531 | bfd_boolean |
||
1532 | _bfd_archive_coff_construct_extended_name_table (bfd *abfd, |
||
1533 | char **tabloc, |
||
1534 | bfd_size_type *tablen, |
||
1535 | const char **name) |
||
1536 | { |
||
1537 | *name = "//"; |
||
1538 | return _bfd_construct_extended_name_table (abfd, TRUE, tabloc, tablen); |
||
1539 | } |
||
1540 | |||
1541 | /* Follows archive_head and produces an extended name table if |
||
1542 | necessary. Returns (in tabloc) a pointer to an extended name |
||
1543 | table, and in tablen the length of the table. If it makes an entry |
||
1544 | it clobbers the filename so that the element may be written without |
||
1545 | further massage. Returns TRUE if it ran successfully, FALSE if |
||
1546 | something went wrong. A successful return may still involve a |
||
1547 | zero-length tablen! */ |
||
1548 | |||
1549 | bfd_boolean |
||
1550 | _bfd_construct_extended_name_table (bfd *abfd, |
||
1551 | bfd_boolean trailing_slash, |
||
1552 | char **tabloc, |
||
1553 | bfd_size_type *tablen) |
||
1554 | { |
||
1555 | unsigned int maxname = ar_maxnamelen (abfd); |
||
1556 | bfd_size_type total_namelen = 0; |
||
1557 | bfd *current; |
||
1558 | char *strptr; |
||
1559 | const char *last_filename; |
||
1560 | long last_stroff; |
||
1561 | |||
1562 | *tablen = 0; |
||
1563 | last_filename = NULL; |
||
1564 | |||
1565 | /* Figure out how long the table should be. */ |
||
1566 | for (current = abfd->archive_head; |
||
1567 | current != NULL; |
||
1568 | current = current->archive_next) |
||
1569 | { |
||
1570 | const char *normal; |
||
1571 | unsigned int thislen; |
||
1572 | |||
1573 | if (bfd_is_thin_archive (abfd)) |
||
1574 | { |
||
1575 | const char *filename = current->filename; |
||
1576 | |||
1577 | /* If the element being added is a member of another archive |
||
1578 | (i.e., we are flattening), use the containing archive's name. */ |
||
1579 | if (current->my_archive |
||
1580 | && ! bfd_is_thin_archive (current->my_archive)) |
||
1581 | filename = current->my_archive->filename; |
||
1582 | |||
1583 | /* If the path is the same as the previous path seen, |
||
1584 | reuse it. This can happen when flattening a thin |
||
1585 | archive that contains other archives. */ |
||
1586 | if (last_filename && filename_cmp (last_filename, filename) == 0) |
||
1587 | continue; |
||
1588 | |||
1589 | last_filename = filename; |
||
1590 | |||
1591 | /* If the path is relative, adjust it relative to |
||
1592 | the containing archive. */ |
||
1593 | if (! IS_ABSOLUTE_PATH (filename) |
||
1594 | && ! IS_ABSOLUTE_PATH (abfd->filename)) |
||
1595 | normal = adjust_relative_path (filename, abfd->filename); |
||
1596 | else |
||
1597 | normal = filename; |
||
1598 | |||
1599 | /* In a thin archive, always store the full pathname |
||
1600 | in the extended name table. */ |
||
1601 | total_namelen += strlen (normal) + 1; |
||
1602 | if (trailing_slash) |
||
1603 | /* Leave room for trailing slash. */ |
||
1604 | ++total_namelen; |
||
1605 | |||
1606 | continue; |
||
1607 | } |
||
1608 | |||
1609 | normal = normalize (current, current->filename); |
||
1610 | if (normal == NULL) |
||
1611 | return FALSE; |
||
1612 | |||
1613 | thislen = strlen (normal); |
||
1614 | |||
1615 | if (thislen > maxname |
||
1616 | && (bfd_get_file_flags (abfd) & BFD_TRADITIONAL_FORMAT) != 0) |
||
1617 | thislen = maxname; |
||
1618 | |||
1619 | if (thislen > maxname) |
||
1620 | { |
||
1621 | /* Add one to leave room for \n. */ |
||
1622 | total_namelen += thislen + 1; |
||
1623 | if (trailing_slash) |
||
1624 | { |
||
1625 | /* Leave room for trailing slash. */ |
||
1626 | ++total_namelen; |
||
1627 | } |
||
1628 | } |
||
1629 | else |
||
1630 | { |
||
1631 | struct ar_hdr *hdr = arch_hdr (current); |
||
1632 | if (filename_ncmp (normal, hdr->ar_name, thislen) != 0 |
||
1633 | || (thislen < sizeof hdr->ar_name |
||
1634 | && hdr->ar_name[thislen] != ar_padchar (current))) |
||
1635 | { |
||
1636 | /* Must have been using extended format even though it |
||
1637 | didn't need to. Fix it to use normal format. */ |
||
1638 | memcpy (hdr->ar_name, normal, thislen); |
||
1639 | if (thislen < maxname |
||
1640 | || (thislen == maxname && thislen < sizeof hdr->ar_name)) |
||
1641 | hdr->ar_name[thislen] = ar_padchar (current); |
||
1642 | } |
||
1643 | } |
||
1644 | } |
||
1645 | |||
1646 | if (total_namelen == 0) |
||
1647 | return TRUE; |
||
1648 | |||
1649 | *tabloc = (char *) bfd_zalloc (abfd, total_namelen); |
||
1650 | if (*tabloc == NULL) |
||
1651 | return FALSE; |
||
1652 | |||
1653 | *tablen = total_namelen; |
||
1654 | strptr = *tabloc; |
||
1655 | |||
1656 | last_filename = NULL; |
||
1657 | last_stroff = 0; |
||
1658 | |||
1659 | for (current = abfd->archive_head; |
||
1660 | current != NULL; |
||
1661 | current = current->archive_next) |
||
1662 | { |
||
1663 | const char *normal; |
||
1664 | unsigned int thislen; |
||
1665 | long stroff; |
||
1666 | const char *filename = current->filename; |
||
1667 | |||
1668 | if (bfd_is_thin_archive (abfd)) |
||
1669 | { |
||
1670 | /* If the element being added is a member of another archive |
||
1671 | (i.e., we are flattening), use the containing archive's name. */ |
||
1672 | if (current->my_archive |
||
1673 | && ! bfd_is_thin_archive (current->my_archive)) |
||
1674 | filename = current->my_archive->filename; |
||
1675 | /* If the path is the same as the previous path seen, |
||
1676 | reuse it. This can happen when flattening a thin |
||
1677 | archive that contains other archives. |
||
1678 | If the path is relative, adjust it relative to |
||
1679 | the containing archive. */ |
||
1680 | if (last_filename && filename_cmp (last_filename, filename) == 0) |
||
1681 | normal = last_filename; |
||
1682 | else if (! IS_ABSOLUTE_PATH (filename) |
||
1683 | && ! IS_ABSOLUTE_PATH (abfd->filename)) |
||
1684 | normal = adjust_relative_path (filename, abfd->filename); |
||
1685 | else |
||
1686 | normal = filename; |
||
1687 | } |
||
1688 | else |
||
1689 | { |
||
1690 | normal = normalize (current, filename); |
||
1691 | if (normal == NULL) |
||
1692 | return FALSE; |
||
1693 | } |
||
1694 | |||
1695 | thislen = strlen (normal); |
||
1696 | if (thislen > maxname || bfd_is_thin_archive (abfd)) |
||
1697 | { |
||
1698 | /* Works for now; may need to be re-engineered if we |
||
1699 | encounter an oddball archive format and want to |
||
1700 | generalise this hack. */ |
||
1701 | struct ar_hdr *hdr = arch_hdr (current); |
||
1702 | if (normal == last_filename) |
||
1703 | stroff = last_stroff; |
||
1704 | else |
||
1705 | { |
||
1706 | strcpy (strptr, normal); |
||
1707 | if (! trailing_slash) |
||
1708 | strptr[thislen] = ARFMAG[1]; |
||
1709 | else |
||
1710 | { |
||
1711 | strptr[thislen] = '/'; |
||
1712 | strptr[thislen + 1] = ARFMAG[1]; |
||
1713 | } |
||
1714 | stroff = strptr - *tabloc; |
||
1715 | last_stroff = stroff; |
||
1716 | } |
||
1717 | hdr->ar_name[0] = ar_padchar (current); |
||
1718 | if (bfd_is_thin_archive (abfd) && current->origin > 0) |
||
1719 | { |
||
1720 | int len = snprintf (hdr->ar_name + 1, maxname - 1, "%-ld:", |
||
1721 | stroff); |
||
1722 | _bfd_ar_spacepad (hdr->ar_name + 1 + len, maxname - 1 - len, |
||
1723 | "%-ld", |
||
1724 | current->origin - sizeof (struct ar_hdr)); |
||
1725 | } |
||
1726 | else |
||
1727 | _bfd_ar_spacepad (hdr->ar_name + 1, maxname - 1, "%-ld", stroff); |
||
1728 | if (normal != last_filename) |
||
1729 | { |
||
1730 | strptr += thislen + 1; |
||
1731 | if (trailing_slash) |
||
1732 | ++strptr; |
||
1733 | last_filename = filename; |
||
1734 | } |
||
1735 | } |
||
1736 | } |
||
1737 | |||
1738 | return TRUE; |
||
1739 | } |
||
1740 | |||
1741 | /* Do not construct an extended name table but transforms name field into |
||
1742 | its extended form. */ |
||
1743 | |||
1744 | bfd_boolean |
||
1745 | _bfd_archive_bsd44_construct_extended_name_table (bfd *abfd, |
||
1746 | char **tabloc, |
||
1747 | bfd_size_type *tablen, |
||
1748 | const char **name) |
||
1749 | { |
||
1750 | unsigned int maxname = ar_maxnamelen (abfd); |
||
1751 | bfd *current; |
||
1752 | |||
1753 | *tablen = 0; |
||
1754 | *tabloc = NULL; |
||
1755 | *name = NULL; |
||
1756 | |||
1757 | for (current = abfd->archive_head; |
||
1758 | current != NULL; |
||
1759 | current = current->archive_next) |
||
1760 | { |
||
1761 | const char *normal = normalize (current, current->filename); |
||
1762 | int has_space = 0; |
||
1763 | unsigned int len; |
||
1764 | |||
1765 | if (normal == NULL) |
||
1766 | return FALSE; |
||
1767 | |||
1768 | for (len = 0; normal[len]; len++) |
||
1769 | if (normal[len] == ' ') |
||
1770 | has_space = 1; |
||
1771 | |||
1772 | if (len > maxname || has_space) |
||
1773 | { |
||
1774 | struct ar_hdr *hdr = arch_hdr (current); |
||
1775 | |||
1776 | len = (len + 3) & ~3; |
||
1777 | arch_eltdata (current)->extra_size = len; |
||
1778 | _bfd_ar_spacepad (hdr->ar_name, maxname, "#1/%lu", len); |
||
1779 | } |
||
1780 | } |
||
1781 | |||
1782 | return TRUE; |
||
1783 | } |
||
1784 | |||
1785 | /* Write an archive header. */ |
||
1786 | |||
1787 | bfd_boolean |
||
1788 | _bfd_generic_write_ar_hdr (bfd *archive, bfd *abfd) |
||
1789 | { |
||
1790 | struct ar_hdr *hdr = arch_hdr (abfd); |
||
1791 | |||
1792 | if (bfd_bwrite (hdr, sizeof (*hdr), archive) != sizeof (*hdr)) |
||
1793 | return FALSE; |
||
1794 | return TRUE; |
||
1795 | } |
||
1796 | |||
1797 | /* Write an archive header using BSD4.4 convention. */ |
||
1798 | |||
1799 | bfd_boolean |
||
1800 | _bfd_bsd44_write_ar_hdr (bfd *archive, bfd *abfd) |
||
1801 | { |
||
1802 | struct ar_hdr *hdr = arch_hdr (abfd); |
||
1803 | |||
1804 | if (is_bsd44_extended_name (hdr->ar_name)) |
||
1805 | { |
||
1806 | /* This is a BSD 4.4 extended name. */ |
||
1807 | const char *fullname = normalize (abfd, abfd->filename); |
||
1808 | unsigned int len = strlen (fullname); |
||
1809 | unsigned int padded_len = (len + 3) & ~3; |
||
1810 | |||
1811 | BFD_ASSERT (padded_len == arch_eltdata (abfd)->extra_size); |
||
1812 | |||
1813 | if (!_bfd_ar_sizepad (hdr->ar_size, sizeof (hdr->ar_size), |
||
1814 | arch_eltdata (abfd)->parsed_size + padded_len)) |
||
1815 | return FALSE; |
||
1816 | |||
1817 | if (bfd_bwrite (hdr, sizeof (*hdr), archive) != sizeof (*hdr)) |
||
1818 | return FALSE; |
||
1819 | |||
1820 | if (bfd_bwrite (fullname, len, archive) != len) |
||
1821 | return FALSE; |
||
1822 | |||
1823 | if (len & 3) |
||
1824 | { |
||
1825 | static const char pad[3] = { 0, 0, 0 }; |
||
1826 | |||
1827 | len = 4 - (len & 3); |
||
1828 | if (bfd_bwrite (pad, len, archive) != len) |
||
1829 | return FALSE; |
||
1830 | } |
||
1831 | } |
||
1832 | else |
||
1833 | { |
||
1834 | if (bfd_bwrite (hdr, sizeof (*hdr), archive) != sizeof (*hdr)) |
||
1835 | return FALSE; |
||
1836 | } |
||
1837 | return TRUE; |
||
1838 | } |
||
1839 | |||
1840 | /* A couple of functions for creating ar_hdrs. */ |
||
1841 | |||
1842 | #ifdef HPUX_LARGE_AR_IDS |
||
1843 | /* Function to encode large UID/GID values according to HP. */ |
||
1844 | |||
1845 | static void |
||
1846 | hpux_uid_gid_encode (char str[6], long int id) |
||
1847 | { |
||
1848 | int cnt; |
||
1849 | |||
1850 | str[5] = '@' + (id & 3); |
||
1851 | id >>= 2; |
||
1852 | |||
1853 | for (cnt = 4; cnt >= 0; --cnt, id >>= 6) |
||
1854 | str[cnt] = ' ' + (id & 0x3f); |
||
1855 | } |
||
1856 | #endif /* HPUX_LARGE_AR_IDS */ |
||
1857 | |||
1858 | #ifndef HAVE_GETUID |
||
1859 | #define getuid() 0 |
||
1860 | #endif |
||
1861 | |||
1862 | #ifndef HAVE_GETGID |
||
1863 | #define getgid() 0 |
||
1864 | #endif |
||
1865 | |||
1866 | /* Takes a filename, returns an arelt_data for it, or NULL if it can't |
||
1867 | make one. The filename must refer to a filename in the filesystem. |
||
1868 | The filename field of the ar_hdr will NOT be initialized. If member |
||
1869 | is set, and it's an in-memory bfd, we fake it. */ |
||
1870 | |||
1871 | static struct areltdata * |
||
1872 | bfd_ar_hdr_from_filesystem (bfd *abfd, const char *filename, bfd *member) |
||
1873 | { |
||
1874 | struct stat status; |
||
1875 | struct areltdata *ared; |
||
1876 | struct ar_hdr *hdr; |
||
1877 | bfd_size_type amt; |
||
1878 | |||
1879 | if (member && (member->flags & BFD_IN_MEMORY) != 0) |
||
1880 | { |
||
1881 | /* Assume we just "made" the member, and fake it. */ |
||
1882 | struct bfd_in_memory *bim = (struct bfd_in_memory *) member->iostream; |
||
1883 | time (&status.st_mtime); |
||
1884 | status.st_uid = getuid (); |
||
1885 | status.st_gid = getgid (); |
||
1886 | status.st_mode = 0644; |
||
1887 | status.st_size = bim->size; |
||
1888 | } |
||
1889 | else if (stat (filename, &status) != 0) |
||
1890 | { |
||
1891 | bfd_set_error (bfd_error_system_call); |
||
1892 | return NULL; |
||
1893 | } |
||
1894 | |||
1895 | /* If the caller requested that the BFD generate deterministic output, |
||
1896 | fake values for modification time, UID, GID, and file mode. */ |
||
1897 | if ((abfd->flags & BFD_DETERMINISTIC_OUTPUT) != 0) |
||
1898 | { |
||
1899 | status.st_mtime = 0; |
||
1900 | status.st_uid = 0; |
||
1901 | status.st_gid = 0; |
||
1902 | status.st_mode = 0644; |
||
1903 | } |
||
1904 | |||
1905 | amt = sizeof (struct ar_hdr) + sizeof (struct areltdata); |
||
1906 | ared = (struct areltdata *) bfd_zmalloc (amt); |
||
1907 | if (ared == NULL) |
||
1908 | return NULL; |
||
1909 | hdr = (struct ar_hdr *) (((char *) ared) + sizeof (struct areltdata)); |
||
1910 | |||
1911 | /* ar headers are space padded, not null padded! */ |
||
1912 | memset (hdr, ' ', sizeof (struct ar_hdr)); |
||
1913 | |||
1914 | _bfd_ar_spacepad (hdr->ar_date, sizeof (hdr->ar_date), "%-12ld", |
||
1915 | status.st_mtime); |
||
1916 | #ifdef HPUX_LARGE_AR_IDS |
||
1917 | /* HP has a very "special" way to handle UID/GID's with numeric values |
||
1918 | > 99999. */ |
||
1919 | if (status.st_uid > 99999) |
||
1920 | hpux_uid_gid_encode (hdr->ar_uid, (long) status.st_uid); |
||
1921 | else |
||
1922 | #endif |
||
1923 | _bfd_ar_spacepad (hdr->ar_uid, sizeof (hdr->ar_uid), "%ld", |
||
1924 | status.st_uid); |
||
1925 | #ifdef HPUX_LARGE_AR_IDS |
||
1926 | /* HP has a very "special" way to handle UID/GID's with numeric values |
||
1927 | > 99999. */ |
||
1928 | if (status.st_gid > 99999) |
||
1929 | hpux_uid_gid_encode (hdr->ar_gid, (long) status.st_gid); |
||
1930 | else |
||
1931 | #endif |
||
1932 | _bfd_ar_spacepad (hdr->ar_gid, sizeof (hdr->ar_gid), "%ld", |
||
1933 | status.st_gid); |
||
1934 | _bfd_ar_spacepad (hdr->ar_mode, sizeof (hdr->ar_mode), "%-8lo", |
||
1935 | status.st_mode); |
||
1936 | if (!_bfd_ar_sizepad (hdr->ar_size, sizeof (hdr->ar_size), status.st_size)) |
||
1937 | { |
||
1938 | free (ared); |
||
1939 | return NULL; |
||
1940 | } |
||
1941 | memcpy (hdr->ar_fmag, ARFMAG, 2); |
||
1942 | ared->parsed_size = status.st_size; |
||
1943 | ared->arch_header = (char *) hdr; |
||
1944 | |||
1945 | return ared; |
||
1946 | } |
||
1947 | |||
1948 | /* Analogous to stat call. */ |
||
1949 | |||
1950 | int |
||
1951 | bfd_generic_stat_arch_elt (bfd *abfd, struct stat *buf) |
||
1952 | { |
||
1953 | struct ar_hdr *hdr; |
||
1954 | char *aloser; |
||
1955 | |||
1956 | if (abfd->arelt_data == NULL) |
||
1957 | { |
||
1958 | bfd_set_error (bfd_error_invalid_operation); |
||
1959 | return -1; |
||
1960 | } |
||
1961 | |||
1962 | hdr = arch_hdr (abfd); |
||
1963 | |||
1964 | #define foo(arelt, stelt, size) \ |
||
1965 | buf->stelt = strtol (hdr->arelt, &aloser, size); \ |
||
1966 | if (aloser == hdr->arelt) \ |
||
1967 | return -1; |
||
1968 | |||
1969 | /* Some platforms support special notations for large IDs. */ |
||
1970 | #ifdef HPUX_LARGE_AR_IDS |
||
1971 | # define foo2(arelt, stelt, size) \ |
||
1972 | if (hdr->arelt[5] == ' ') \ |
||
1973 | { \ |
||
1974 | foo (arelt, stelt, size); \ |
||
1975 | } \ |
||
1976 | else \ |
||
1977 | { \ |
||
1978 | int cnt; \ |
||
1979 | for (buf->stelt = cnt = 0; cnt < 5; ++cnt) \ |
||
1980 | { \ |
||
1981 | if (hdr->arelt[cnt] < ' ' || hdr->arelt[cnt] > ' ' + 0x3f) \ |
||
1982 | return -1; \ |
||
1983 | buf->stelt <<= 6; \ |
||
1984 | buf->stelt += hdr->arelt[cnt] - ' '; \ |
||
1985 | } \ |
||
1986 | if (hdr->arelt[5] < '@' || hdr->arelt[5] > '@' + 3) \ |
||
1987 | return -1; \ |
||
1988 | buf->stelt <<= 2; \ |
||
1989 | buf->stelt += hdr->arelt[5] - '@'; \ |
||
1990 | } |
||
1991 | #else |
||
1992 | # define foo2(arelt, stelt, size) foo (arelt, stelt, size) |
||
1993 | #endif |
||
1994 | |||
1995 | foo (ar_date, st_mtime, 10); |
||
1996 | foo2 (ar_uid, st_uid, 10); |
||
1997 | foo2 (ar_gid, st_gid, 10); |
||
1998 | foo (ar_mode, st_mode, 8); |
||
1999 | |||
2000 | buf->st_size = arch_eltdata (abfd)->parsed_size; |
||
2001 | |||
2002 | return 0; |
||
2003 | } |
||
2004 | |||
2005 | void |
||
2006 | bfd_dont_truncate_arname (bfd *abfd, const char *pathname, char *arhdr) |
||
2007 | { |
||
2008 | /* FIXME: This interacts unpleasantly with ar's quick-append option. |
||
2009 | Fortunately ic960 users will never use that option. Fixing this |
||
2010 | is very hard; fortunately I know how to do it and will do so once |
||
2011 | intel's release is out the door. */ |
||
2012 | |||
2013 | struct ar_hdr *hdr = (struct ar_hdr *) arhdr; |
||
2014 | size_t length; |
||
2015 | const char *filename; |
||
2016 | size_t maxlen = ar_maxnamelen (abfd); |
||
2017 | |||
2018 | if ((bfd_get_file_flags (abfd) & BFD_TRADITIONAL_FORMAT) != 0) |
||
2019 | { |
||
2020 | bfd_bsd_truncate_arname (abfd, pathname, arhdr); |
||
2021 | return; |
||
2022 | } |
||
2023 | |||
2024 | filename = normalize (abfd, pathname); |
||
2025 | if (filename == NULL) |
||
2026 | { |
||
2027 | /* FIXME */ |
||
2028 | abort (); |
||
2029 | } |
||
2030 | |||
2031 | length = strlen (filename); |
||
2032 | |||
2033 | if (length <= maxlen) |
||
2034 | memcpy (hdr->ar_name, filename, length); |
||
2035 | |||
2036 | /* Add the padding character if there is room for it. */ |
||
2037 | if (length < maxlen |
||
2038 | || (length == maxlen && length < sizeof hdr->ar_name)) |
||
2039 | (hdr->ar_name)[length] = ar_padchar (abfd); |
||
2040 | } |
||
2041 | |||
2042 | void |
||
2043 | bfd_bsd_truncate_arname (bfd *abfd, const char *pathname, char *arhdr) |
||
2044 | { |
||
2045 | struct ar_hdr *hdr = (struct ar_hdr *) arhdr; |
||
2046 | size_t length; |
||
2047 | const char *filename = lbasename (pathname); |
||
2048 | size_t maxlen = ar_maxnamelen (abfd); |
||
2049 | |||
2050 | length = strlen (filename); |
||
2051 | |||
2052 | if (length <= maxlen) |
||
2053 | memcpy (hdr->ar_name, filename, length); |
||
2054 | else |
||
2055 | { |
||
2056 | /* pathname: meet procrustes */ |
||
2057 | memcpy (hdr->ar_name, filename, maxlen); |
||
2058 | length = maxlen; |
||
2059 | } |
||
2060 | |||
2061 | if (length < maxlen) |
||
2062 | (hdr->ar_name)[length] = ar_padchar (abfd); |
||
2063 | } |
||
2064 | |||
2065 | /* Store name into ar header. Truncates the name to fit. |
||
2066 | 1> strip pathname to be just the basename. |
||
2067 | 2> if it's short enuf to fit, stuff it in. |
||
2068 | 3> If it doesn't end with .o, truncate it to fit |
||
2069 | 4> truncate it before the .o, append .o, stuff THAT in. */ |
||
2070 | |||
2071 | /* This is what gnu ar does. It's better but incompatible with the |
||
2072 | bsd ar. */ |
||
2073 | |||
2074 | void |
||
2075 | bfd_gnu_truncate_arname (bfd *abfd, const char *pathname, char *arhdr) |
||
2076 | { |
||
2077 | struct ar_hdr *hdr = (struct ar_hdr *) arhdr; |
||
2078 | size_t length; |
||
2079 | const char *filename = lbasename (pathname); |
||
2080 | size_t maxlen = ar_maxnamelen (abfd); |
||
2081 | |||
2082 | length = strlen (filename); |
||
2083 | |||
2084 | if (length <= maxlen) |
||
2085 | memcpy (hdr->ar_name, filename, length); |
||
2086 | else |
||
2087 | { |
||
2088 | /* pathname: meet procrustes. */ |
||
2089 | memcpy (hdr->ar_name, filename, maxlen); |
||
2090 | if ((filename[length - 2] == '.') && (filename[length - 1] == 'o')) |
||
2091 | { |
||
2092 | hdr->ar_name[maxlen - 2] = '.'; |
||
2093 | hdr->ar_name[maxlen - 1] = 'o'; |
||
2094 | } |
||
2095 | length = maxlen; |
||
2096 | } |
||
2097 | |||
2098 | if (length < 16) |
||
2099 | (hdr->ar_name)[length] = ar_padchar (abfd); |
||
2100 | } |
||
2101 | |||
2102 | /* The BFD is open for write and has its format set to bfd_archive. */ |
||
2103 | |||
2104 | bfd_boolean |
||
2105 | _bfd_write_archive_contents (bfd *arch) |
||
2106 | { |
||
2107 | bfd *current; |
||
2108 | char *etable = NULL; |
||
2109 | bfd_size_type elength = 0; |
||
2110 | const char *ename = NULL; |
||
2111 | bfd_boolean makemap = bfd_has_map (arch); |
||
2112 | /* If no .o's, don't bother to make a map. */ |
||
2113 | bfd_boolean hasobjects = FALSE; |
||
2114 | bfd_size_type wrote; |
||
2115 | int tries; |
||
2116 | char *armag; |
||
2117 | |||
2118 | /* Verify the viability of all entries; if any of them live in the |
||
2119 | filesystem (as opposed to living in an archive open for input) |
||
2120 | then construct a fresh ar_hdr for them. */ |
||
2121 | for (current = arch->archive_head; |
||
2122 | current != NULL; |
||
2123 | current = current->archive_next) |
||
2124 | { |
||
2125 | /* This check is checking the bfds for the objects we're reading |
||
2126 | from (which are usually either an object file or archive on |
||
2127 | disk), not the archive entries we're writing to. We don't |
||
2128 | actually create bfds for the archive members, we just copy |
||
2129 | them byte-wise when we write out the archive. */ |
||
2130 | if (bfd_write_p (current)) |
||
2131 | { |
||
2132 | bfd_set_error (bfd_error_invalid_operation); |
||
2133 | goto input_err; |
||
2134 | } |
||
2135 | if (!current->arelt_data) |
||
2136 | { |
||
2137 | current->arelt_data = |
||
2138 | bfd_ar_hdr_from_filesystem (arch, current->filename, current); |
||
2139 | if (!current->arelt_data) |
||
2140 | goto input_err; |
||
2141 | |||
2142 | /* Put in the file name. */ |
||
2143 | BFD_SEND (arch, _bfd_truncate_arname, |
||
2144 | (arch, current->filename, (char *) arch_hdr (current))); |
||
2145 | } |
||
2146 | |||
2147 | if (makemap && ! hasobjects) |
||
2148 | { /* Don't bother if we won't make a map! */ |
||
2149 | if ((bfd_check_format (current, bfd_object))) |
||
2150 | hasobjects = TRUE; |
||
2151 | } |
||
2152 | } |
||
2153 | |||
2154 | if (!BFD_SEND (arch, _bfd_construct_extended_name_table, |
||
2155 | (arch, &etable, &elength, &ename))) |
||
2156 | return FALSE; |
||
2157 | |||
2158 | if (bfd_seek (arch, (file_ptr) 0, SEEK_SET) != 0) |
||
2159 | return FALSE; |
||
2160 | armag = ARMAG; |
||
2161 | if (bfd_is_thin_archive (arch)) |
||
2162 | armag = ARMAGT; |
||
2163 | wrote = bfd_bwrite (armag, SARMAG, arch); |
||
2164 | if (wrote != SARMAG) |
||
2165 | return FALSE; |
||
2166 | |||
2167 | if (makemap && hasobjects) |
||
2168 | { |
||
2169 | if (! _bfd_compute_and_write_armap (arch, (unsigned int) elength)) |
||
2170 | return FALSE; |
||
2171 | } |
||
2172 | |||
2173 | if (elength != 0) |
||
2174 | { |
||
2175 | struct ar_hdr hdr; |
||
2176 | |||
2177 | memset (&hdr, ' ', sizeof (struct ar_hdr)); |
||
2178 | memcpy (hdr.ar_name, ename, strlen (ename)); |
||
2179 | /* Round size up to even number in archive header. */ |
||
2180 | if (!_bfd_ar_sizepad (hdr.ar_size, sizeof (hdr.ar_size), |
||
2181 | (elength + 1) & ~(bfd_size_type) 1)) |
||
2182 | return FALSE; |
||
2183 | memcpy (hdr.ar_fmag, ARFMAG, 2); |
||
2184 | if ((bfd_bwrite (&hdr, sizeof (struct ar_hdr), arch) |
||
2185 | != sizeof (struct ar_hdr)) |
||
2186 | || bfd_bwrite (etable, elength, arch) != elength) |
||
2187 | return FALSE; |
||
2188 | if ((elength % 2) == 1) |
||
2189 | { |
||
2190 | if (bfd_bwrite (&ARFMAG[1], 1, arch) != 1) |
||
2191 | return FALSE; |
||
2192 | } |
||
2193 | } |
||
2194 | |||
2195 | for (current = arch->archive_head; |
||
2196 | current != NULL; |
||
2197 | current = current->archive_next) |
||
2198 | { |
||
2199 | char buffer[DEFAULT_BUFFERSIZE]; |
||
2200 | bfd_size_type remaining = arelt_size (current); |
||
2201 | |||
2202 | /* Write ar header. */ |
||
2203 | if (!_bfd_write_ar_hdr (arch, current)) |
||
2204 | return FALSE; |
||
2205 | if (bfd_is_thin_archive (arch)) |
||
2206 | continue; |
||
2207 | if (bfd_seek (current, (file_ptr) 0, SEEK_SET) != 0) |
||
2208 | goto input_err; |
||
2209 | |||
2210 | while (remaining) |
||
2211 | { |
||
2212 | unsigned int amt = DEFAULT_BUFFERSIZE; |
||
2213 | |||
2214 | if (amt > remaining) |
||
2215 | amt = remaining; |
||
2216 | errno = 0; |
||
2217 | if (bfd_bread (buffer, amt, current) != amt) |
||
2218 | { |
||
2219 | if (bfd_get_error () != bfd_error_system_call) |
||
2220 | bfd_set_error (bfd_error_file_truncated); |
||
2221 | goto input_err; |
||
2222 | } |
||
2223 | if (bfd_bwrite (buffer, amt, arch) != amt) |
||
2224 | return FALSE; |
||
2225 | remaining -= amt; |
||
2226 | } |
||
2227 | |||
2228 | if ((arelt_size (current) % 2) == 1) |
||
2229 | { |
||
2230 | if (bfd_bwrite (&ARFMAG[1], 1, arch) != 1) |
||
2231 | return FALSE; |
||
2232 | } |
||
2233 | } |
||
2234 | |||
2235 | if (makemap && hasobjects) |
||
2236 | { |
||
2237 | /* Verify the timestamp in the archive file. If it would not be |
||
2238 | accepted by the linker, rewrite it until it would be. If |
||
2239 | anything odd happens, break out and just return. (The |
||
2240 | Berkeley linker checks the timestamp and refuses to read the |
||
2241 | table-of-contents if it is >60 seconds less than the file's |
||
2242 | modified-time. That painful hack requires this painful hack. */ |
||
2243 | tries = 1; |
||
2244 | do |
||
2245 | { |
||
2246 | if (bfd_update_armap_timestamp (arch)) |
||
2247 | break; |
||
2248 | (*_bfd_error_handler) |
||
2249 | (_("Warning: writing archive was slow: rewriting timestamp\n")); |
||
2250 | } |
||
2251 | while (++tries < 6); |
||
2252 | } |
||
2253 | |||
2254 | return TRUE; |
||
2255 | |||
2256 | input_err: |
||
2257 | bfd_set_error (bfd_error_on_input, current, bfd_get_error ()); |
||
2258 | return FALSE; |
||
2259 | } |
||
2260 | |||
2261 | /* Note that the namidx for the first symbol is 0. */ |
||
2262 | |||
2263 | bfd_boolean |
||
2264 | _bfd_compute_and_write_armap (bfd *arch, unsigned int elength) |
||
2265 | { |
||
2266 | char *first_name = NULL; |
||
2267 | bfd *current; |
||
2268 | file_ptr elt_no = 0; |
||
2269 | struct orl *map = NULL; |
||
2270 | unsigned int orl_max = 1024; /* Fine initial default. */ |
||
2271 | unsigned int orl_count = 0; |
||
2272 | int stridx = 0; |
||
2273 | asymbol **syms = NULL; |
||
2274 | long syms_max = 0; |
||
2275 | bfd_boolean ret; |
||
2276 | bfd_size_type amt; |
||
2277 | |||
2278 | /* Dunno if this is the best place for this info... */ |
||
2279 | if (elength != 0) |
||
2280 | elength += sizeof (struct ar_hdr); |
||
2281 | elength += elength % 2; |
||
2282 | |||
2283 | amt = orl_max * sizeof (struct orl); |
||
2284 | map = (struct orl *) bfd_malloc (amt); |
||
2285 | if (map == NULL) |
||
2286 | goto error_return; |
||
2287 | |||
2288 | /* We put the symbol names on the arch objalloc, and then discard |
||
2289 | them when done. */ |
||
2290 | first_name = (char *) bfd_alloc (arch, 1); |
||
2291 | if (first_name == NULL) |
||
2292 | goto error_return; |
||
2293 | |||
2294 | /* Drop all the files called __.SYMDEF, we're going to make our own. */ |
||
2295 | while (arch->archive_head |
||
2296 | && strcmp (arch->archive_head->filename, "__.SYMDEF") == 0) |
||
2297 | arch->archive_head = arch->archive_head->archive_next; |
||
2298 | |||
2299 | /* Map over each element. */ |
||
2300 | for (current = arch->archive_head; |
||
2301 | current != NULL; |
||
2302 | current = current->archive_next, elt_no++) |
||
2303 | { |
||
2304 | if (bfd_check_format (current, bfd_object) |
||
2305 | && (bfd_get_file_flags (current) & HAS_SYMS) != 0) |
||
2306 | { |
||
2307 | long storage; |
||
2308 | long symcount; |
||
2309 | long src_count; |
||
2310 | |||
2311 | storage = bfd_get_symtab_upper_bound (current); |
||
2312 | if (storage < 0) |
||
2313 | goto error_return; |
||
2314 | |||
2315 | if (storage != 0) |
||
2316 | { |
||
2317 | if (storage > syms_max) |
||
2318 | { |
||
2319 | if (syms_max > 0) |
||
2320 | free (syms); |
||
2321 | syms_max = storage; |
||
2322 | syms = (asymbol **) bfd_malloc (syms_max); |
||
2323 | if (syms == NULL) |
||
2324 | goto error_return; |
||
2325 | } |
||
2326 | symcount = bfd_canonicalize_symtab (current, syms); |
||
2327 | if (symcount < 0) |
||
2328 | goto error_return; |
||
2329 | |||
2330 | /* Now map over all the symbols, picking out the ones we |
||
2331 | want. */ |
||
2332 | for (src_count = 0; src_count < symcount; src_count++) |
||
2333 | { |
||
2334 | flagword flags = (syms[src_count])->flags; |
||
2335 | asection *sec = syms[src_count]->section; |
||
2336 | |||
2337 | if (((flags & (BSF_GLOBAL |
||
2338 | | BSF_WEAK |
||
2339 | | BSF_INDIRECT |
||
2340 | | BSF_GNU_UNIQUE)) != 0 |
||
2341 | || bfd_is_com_section (sec)) |
||
2342 | && ! bfd_is_und_section (sec)) |
||
2343 | { |
||
2344 | bfd_size_type namelen; |
||
2345 | struct orl *new_map; |
||
2346 | |||
2347 | /* This symbol will go into the archive header. */ |
||
2348 | if (orl_count == orl_max) |
||
2349 | { |
||
2350 | orl_max *= 2; |
||
2351 | amt = orl_max * sizeof (struct orl); |
||
2352 | new_map = (struct orl *) bfd_realloc (map, amt); |
||
2353 | if (new_map == NULL) |
||
2354 | goto error_return; |
||
2355 | |||
2356 | map = new_map; |
||
2357 | } |
||
2358 | |||
2359 | namelen = strlen (syms[src_count]->name); |
||
2360 | amt = sizeof (char *); |
||
2361 | map[orl_count].name = (char **) bfd_alloc (arch, amt); |
||
2362 | if (map[orl_count].name == NULL) |
||
2363 | goto error_return; |
||
2364 | *(map[orl_count].name) = (char *) bfd_alloc (arch, |
||
2365 | namelen + 1); |
||
2366 | if (*(map[orl_count].name) == NULL) |
||
2367 | goto error_return; |
||
2368 | strcpy (*(map[orl_count].name), syms[src_count]->name); |
||
2369 | map[orl_count].u.abfd = current; |
||
2370 | map[orl_count].namidx = stridx; |
||
2371 | |||
2372 | stridx += namelen + 1; |
||
2373 | ++orl_count; |
||
2374 | } |
||
2375 | } |
||
2376 | } |
||
2377 | |||
2378 | /* Now ask the BFD to free up any cached information, so we |
||
2379 | don't fill all of memory with symbol tables. */ |
||
2380 | if (! bfd_free_cached_info (current)) |
||
2381 | goto error_return; |
||
2382 | } |
||
2383 | } |
||
2384 | |||
2385 | /* OK, now we have collected all the data, let's write them out. */ |
||
2386 | ret = BFD_SEND (arch, write_armap, |
||
2387 | (arch, elength, map, orl_count, stridx)); |
||
2388 | |||
2389 | if (syms_max > 0) |
||
2390 | free (syms); |
||
2391 | if (map != NULL) |
||
2392 | free (map); |
||
2393 | if (first_name != NULL) |
||
2394 | bfd_release (arch, first_name); |
||
2395 | |||
2396 | return ret; |
||
2397 | |||
2398 | error_return: |
||
2399 | if (syms_max > 0) |
||
2400 | free (syms); |
||
2401 | if (map != NULL) |
||
2402 | free (map); |
||
2403 | if (first_name != NULL) |
||
2404 | bfd_release (arch, first_name); |
||
2405 | |||
2406 | return FALSE; |
||
2407 | } |
||
2408 | |||
2409 | bfd_boolean |
||
2410 | bsd_write_armap (bfd *arch, |
||
2411 | unsigned int elength, |
||
2412 | struct orl *map, |
||
2413 | unsigned int orl_count, |
||
2414 | int stridx) |
||
2415 | { |
||
2416 | int padit = stridx & 1; |
||
2417 | unsigned int ranlibsize = orl_count * BSD_SYMDEF_SIZE; |
||
2418 | unsigned int stringsize = stridx + padit; |
||
2419 | /* Include 8 bytes to store ranlibsize and stringsize in output. */ |
||
2420 | unsigned int mapsize = ranlibsize + stringsize + 8; |
||
2421 | file_ptr firstreal; |
||
2422 | bfd *current = arch->archive_head; |
||
2423 | bfd *last_elt = current; /* Last element arch seen. */ |
||
2424 | bfd_byte temp[4]; |
||
2425 | unsigned int count; |
||
2426 | struct ar_hdr hdr; |
||
2427 | long uid, gid; |
||
2428 | |||
2429 | firstreal = mapsize + elength + sizeof (struct ar_hdr) + SARMAG; |
||
2430 | |||
2431 | /* If deterministic, we use 0 as the timestamp in the map. |
||
2432 | Some linkers may require that the archive filesystem modification |
||
2433 | time is less than (or near to) the archive map timestamp. Those |
||
2434 | linkers should not be used with deterministic mode. (GNU ld and |
||
2435 | Gold do not have this restriction.) */ |
||
2436 | bfd_ardata (arch)->armap_timestamp = 0; |
||
2437 | uid = 0; |
||
2438 | gid = 0; |
||
2439 | if ((arch->flags & BFD_DETERMINISTIC_OUTPUT) == 0) |
||
2440 | { |
||
2441 | struct stat statbuf; |
||
2442 | |||
2443 | if (stat (arch->filename, &statbuf) == 0) |
||
2444 | bfd_ardata (arch)->armap_timestamp = (statbuf.st_mtime |
||
2445 | + ARMAP_TIME_OFFSET); |
||
2446 | uid = getuid(); |
||
2447 | gid = getgid(); |
||
2448 | } |
||
2449 | |||
2450 | memset (&hdr, ' ', sizeof (struct ar_hdr)); |
||
2451 | memcpy (hdr.ar_name, RANLIBMAG, strlen (RANLIBMAG)); |
||
2452 | bfd_ardata (arch)->armap_datepos = (SARMAG |
||
2453 | + offsetof (struct ar_hdr, ar_date[0])); |
||
2454 | _bfd_ar_spacepad (hdr.ar_date, sizeof (hdr.ar_date), "%ld", |
||
2455 | bfd_ardata (arch)->armap_timestamp); |
||
2456 | _bfd_ar_spacepad (hdr.ar_uid, sizeof (hdr.ar_uid), "%ld", uid); |
||
2457 | _bfd_ar_spacepad (hdr.ar_gid, sizeof (hdr.ar_gid), "%ld", gid); |
||
2458 | if (!_bfd_ar_sizepad (hdr.ar_size, sizeof (hdr.ar_size), mapsize)) |
||
2459 | return FALSE; |
||
2460 | memcpy (hdr.ar_fmag, ARFMAG, 2); |
||
2461 | if (bfd_bwrite (&hdr, sizeof (struct ar_hdr), arch) |
||
2462 | != sizeof (struct ar_hdr)) |
||
2463 | return FALSE; |
||
2464 | H_PUT_32 (arch, ranlibsize, temp); |
||
2465 | if (bfd_bwrite (temp, sizeof (temp), arch) != sizeof (temp)) |
||
2466 | return FALSE; |
||
2467 | |||
2468 | for (count = 0; count < orl_count; count++) |
||
2469 | { |
||
2470 | unsigned int offset; |
||
2471 | bfd_byte buf[BSD_SYMDEF_SIZE]; |
||
2472 | |||
2473 | if (map[count].u.abfd != last_elt) |
||
2474 | { |
||
2475 | do |
||
2476 | { |
||
2477 | struct areltdata *ared = arch_eltdata (current); |
||
2478 | |||
2479 | firstreal += (ared->parsed_size + ared->extra_size |
||
2480 | + sizeof (struct ar_hdr)); |
||
2481 | firstreal += firstreal % 2; |
||
2482 | current = current->archive_next; |
||
2483 | } |
||
2484 | while (current != map[count].u.abfd); |
||
2485 | } |
||
2486 | |||
2487 | /* The archive file format only has 4 bytes to store the offset |
||
2488 | of the member. Check to make sure that firstreal has not grown |
||
2489 | too big. */ |
||
2490 | offset = (unsigned int) firstreal; |
||
2491 | if (firstreal != (file_ptr) offset) |
||
2492 | { |
||
2493 | bfd_set_error (bfd_error_file_truncated); |
||
2494 | return FALSE; |
||
2495 | } |
||
2496 | |||
2497 | last_elt = current; |
||
2498 | H_PUT_32 (arch, map[count].namidx, buf); |
||
2499 | H_PUT_32 (arch, firstreal, buf + BSD_SYMDEF_OFFSET_SIZE); |
||
2500 | if (bfd_bwrite (buf, BSD_SYMDEF_SIZE, arch) |
||
2501 | != BSD_SYMDEF_SIZE) |
||
2502 | return FALSE; |
||
2503 | } |
||
2504 | |||
2505 | /* Now write the strings themselves. */ |
||
2506 | H_PUT_32 (arch, stringsize, temp); |
||
2507 | if (bfd_bwrite (temp, sizeof (temp), arch) != sizeof (temp)) |
||
2508 | return FALSE; |
||
2509 | for (count = 0; count < orl_count; count++) |
||
2510 | { |
||
2511 | size_t len = strlen (*map[count].name) + 1; |
||
2512 | |||
2513 | if (bfd_bwrite (*map[count].name, len, arch) != len) |
||
2514 | return FALSE; |
||
2515 | } |
||
2516 | |||
2517 | /* The spec sez this should be a newline. But in order to be |
||
2518 | bug-compatible for sun's ar we use a null. */ |
||
2519 | if (padit) |
||
2520 | { |
||
2521 | if (bfd_bwrite ("", 1, arch) != 1) |
||
2522 | return FALSE; |
||
2523 | } |
||
2524 | |||
2525 | return TRUE; |
||
2526 | } |
||
2527 | |||
2528 | /* At the end of archive file handling, update the timestamp in the |
||
2529 | file, so the linker will accept it. |
||
2530 | |||
2531 | Return TRUE if the timestamp was OK, or an unusual problem happened. |
||
2532 | Return FALSE if we updated the timestamp. */ |
||
2533 | |||
2534 | bfd_boolean |
||
2535 | _bfd_archive_bsd_update_armap_timestamp (bfd *arch) |
||
2536 | { |
||
2537 | struct stat archstat; |
||
2538 | struct ar_hdr hdr; |
||
2539 | |||
2540 | /* If creating deterministic archives, just leave the timestamp as-is. */ |
||
2541 | if ((arch->flags & BFD_DETERMINISTIC_OUTPUT) != 0) |
||
2542 | return TRUE; |
||
2543 | |||
2544 | /* Flush writes, get last-write timestamp from file, and compare it |
||
2545 | to the timestamp IN the file. */ |
||
2546 | bfd_flush (arch); |
||
2547 | if (bfd_stat (arch, &archstat) == -1) |
||
2548 | { |
||
2549 | bfd_perror (_("Reading archive file mod timestamp")); |
||
2550 | |||
2551 | /* Can't read mod time for some reason. */ |
||
2552 | return TRUE; |
||
2553 | } |
||
2554 | if (((long) archstat.st_mtime) <= bfd_ardata (arch)->armap_timestamp) |
||
2555 | /* OK by the linker's rules. */ |
||
2556 | return TRUE; |
||
2557 | |||
2558 | /* Update the timestamp. */ |
||
2559 | bfd_ardata (arch)->armap_timestamp = archstat.st_mtime + ARMAP_TIME_OFFSET; |
||
2560 | |||
2561 | /* Prepare an ASCII version suitable for writing. */ |
||
2562 | memset (hdr.ar_date, ' ', sizeof (hdr.ar_date)); |
||
2563 | _bfd_ar_spacepad (hdr.ar_date, sizeof (hdr.ar_date), "%ld", |
||
2564 | bfd_ardata (arch)->armap_timestamp); |
||
2565 | |||
2566 | /* Write it into the file. */ |
||
2567 | bfd_ardata (arch)->armap_datepos = (SARMAG |
||
2568 | + offsetof (struct ar_hdr, ar_date[0])); |
||
2569 | if (bfd_seek (arch, bfd_ardata (arch)->armap_datepos, SEEK_SET) != 0 |
||
2570 | || (bfd_bwrite (hdr.ar_date, sizeof (hdr.ar_date), arch) |
||
2571 | != sizeof (hdr.ar_date))) |
||
2572 | { |
||
2573 | bfd_perror (_("Writing updated armap timestamp")); |
||
2574 | |||
2575 | /* Some error while writing. */ |
||
2576 | return TRUE; |
||
2577 | } |
||
2578 | |||
2579 | /* We updated the timestamp successfully. */ |
||
2580 | return FALSE; |
||
2581 | } |
||
2582 | |||
2583 | /* A coff armap looks like : |
||
2584 | lARMAG |
||
2585 | struct ar_hdr with name = '/' |
||
2586 | number of symbols |
||
2587 | offset of file for symbol 0 |
||
2588 | offset of file for symbol 1 |
||
2589 | |||
2590 | offset of file for symbol n-1 |
||
2591 | symbol name 0 |
||
2592 | symbol name 1 |
||
2593 | |||
2594 | symbol name n-1 */ |
||
2595 | |||
2596 | bfd_boolean |
||
2597 | coff_write_armap (bfd *arch, |
||
2598 | unsigned int elength, |
||
2599 | struct orl *map, |
||
2600 | unsigned int symbol_count, |
||
2601 | int stridx) |
||
2602 | { |
||
2603 | /* The size of the ranlib is the number of exported symbols in the |
||
2604 | archive * the number of bytes in an int, + an int for the count. */ |
||
2605 | unsigned int ranlibsize = (symbol_count * 4) + 4; |
||
2606 | unsigned int stringsize = stridx; |
||
2607 | unsigned int mapsize = stringsize + ranlibsize; |
||
2608 | file_ptr archive_member_file_ptr; |
||
2609 | bfd *current = arch->archive_head; |
||
2610 | unsigned int count; |
||
2611 | struct ar_hdr hdr; |
||
2612 | int padit = mapsize & 1; |
||
2613 | |||
2614 | if (padit) |
||
2615 | mapsize++; |
||
2616 | |||
2617 | /* Work out where the first object file will go in the archive. */ |
||
2618 | archive_member_file_ptr = (mapsize |
||
2619 | + elength |
||
2620 | + sizeof (struct ar_hdr) |
||
2621 | + SARMAG); |
||
2622 | |||
2623 | memset (&hdr, ' ', sizeof (struct ar_hdr)); |
||
2624 | hdr.ar_name[0] = '/'; |
||
2625 | if (!_bfd_ar_sizepad (hdr.ar_size, sizeof (hdr.ar_size), mapsize)) |
||
2626 | return FALSE; |
||
2627 | _bfd_ar_spacepad (hdr.ar_date, sizeof (hdr.ar_date), "%ld", |
||
2628 | ((arch->flags & BFD_DETERMINISTIC_OUTPUT) == 0 |
||
2629 | ? time (NULL) : 0)); |
||
2630 | /* This, at least, is what Intel coff sets the values to. */ |
||
2631 | _bfd_ar_spacepad (hdr.ar_uid, sizeof (hdr.ar_uid), "%ld", 0); |
||
2632 | _bfd_ar_spacepad (hdr.ar_gid, sizeof (hdr.ar_gid), "%ld", 0); |
||
2633 | _bfd_ar_spacepad (hdr.ar_mode, sizeof (hdr.ar_mode), "%-7lo", 0); |
||
2634 | memcpy (hdr.ar_fmag, ARFMAG, 2); |
||
2635 | |||
2636 | /* Write the ar header for this item and the number of symbols. */ |
||
2637 | if (bfd_bwrite (&hdr, sizeof (struct ar_hdr), arch) |
||
2638 | != sizeof (struct ar_hdr)) |
||
2639 | return FALSE; |
||
2640 | |||
2641 | if (!bfd_write_bigendian_4byte_int (arch, symbol_count)) |
||
2642 | return FALSE; |
||
2643 | |||
2644 | /* Two passes, first write the file offsets for each symbol - |
||
2645 | remembering that each offset is on a two byte boundary. */ |
||
2646 | |||
2647 | /* Write out the file offset for the file associated with each |
||
2648 | symbol, and remember to keep the offsets padded out. */ |
||
2649 | |||
2650 | current = arch->archive_head; |
||
2651 | count = 0; |
||
2652 | while (current != NULL && count < symbol_count) |
||
2653 | { |
||
2654 | /* For each symbol which is used defined in this object, write |
||
2655 | out the object file's address in the archive. */ |
||
2656 | |||
2657 | while (count < symbol_count && map[count].u.abfd == current) |
||
2658 | { |
||
2659 | unsigned int offset = (unsigned int) archive_member_file_ptr; |
||
2660 | |||
2661 | /* Catch an attempt to grow an archive past its 4Gb limit. */ |
||
2662 | if (archive_member_file_ptr != (file_ptr) offset) |
||
2663 | { |
||
2664 | bfd_set_error (bfd_error_file_truncated); |
||
2665 | return FALSE; |
||
2666 | } |
||
2667 | if (!bfd_write_bigendian_4byte_int (arch, offset)) |
||
2668 | return FALSE; |
||
2669 | count++; |
||
2670 | } |
||
2671 | archive_member_file_ptr += sizeof (struct ar_hdr); |
||
2672 | if (! bfd_is_thin_archive (arch)) |
||
2673 | { |
||
2674 | /* Add size of this archive entry. */ |
||
2675 | archive_member_file_ptr += arelt_size (current); |
||
2676 | /* Remember about the even alignment. */ |
||
2677 | archive_member_file_ptr += archive_member_file_ptr % 2; |
||
2678 | } |
||
2679 | current = current->archive_next; |
||
2680 | } |
||
2681 | |||
2682 | /* Now write the strings themselves. */ |
||
2683 | for (count = 0; count < symbol_count; count++) |
||
2684 | { |
||
2685 | size_t len = strlen (*map[count].name) + 1; |
||
2686 | |||
2687 | if (bfd_bwrite (*map[count].name, len, arch) != len) |
||
2688 | return FALSE; |
||
2689 | } |
||
2690 | |||
2691 | /* The spec sez this should be a newline. But in order to be |
||
2692 | bug-compatible for arc960 we use a null. */ |
||
2693 | if (padit) |
||
2694 | { |
||
2695 | if (bfd_bwrite ("", 1, arch) != 1) |
||
2696 | return FALSE; |
||
2697 | } |
||
2698 | |||
2699 | return TRUE; |
||
2700 | } |
||
2701 | |||
2702 | static int |
||
2703 | archive_close_worker (void **slot, void *inf ATTRIBUTE_UNUSED) |
||
2704 | { |
||
2705 | struct ar_cache *ent = (struct ar_cache *) *slot; |
||
2706 | |||
2707 | bfd_close_all_done (ent->arbfd); |
||
2708 | return 1; |
||
2709 | } |
||
2710 | |||
2711 | bfd_boolean |
||
2712 | _bfd_archive_close_and_cleanup (bfd *abfd) |
||
2713 | { |
||
2714 | if (bfd_read_p (abfd) && abfd->format == bfd_archive) |
||
2715 | { |
||
2716 | bfd *nbfd; |
||
2717 | bfd *next; |
||
2718 | htab_t htab; |
||
2719 | |||
2720 | /* Close nested archives (if this bfd is a thin archive). */ |
||
2721 | for (nbfd = abfd->nested_archives; nbfd; nbfd = next) |
||
2722 | { |
||
2723 | next = nbfd->archive_next; |
||
2724 | bfd_close (nbfd); |
||
2725 | } |
||
2726 | |||
2727 | htab = bfd_ardata (abfd)->cache; |
||
2728 | if (htab) |
||
2729 | { |
||
2730 | htab_traverse_noresize (htab, archive_close_worker, NULL); |
||
2731 | htab_delete (htab); |
||
2732 | bfd_ardata (abfd)->cache = NULL; |
||
2733 | } |
||
2734 | } |
||
2735 | if (arch_eltdata (abfd) != NULL) |
||
2736 | { |
||
2737 | struct areltdata *ared = arch_eltdata (abfd); |
||
2738 | htab_t htab = (htab_t) ared->parent_cache; |
||
2739 | |||
2740 | if (htab) |
||
2741 | { |
||
2742 | struct ar_cache ent; |
||
2743 | void **slot; |
||
2744 | |||
2745 | ent.ptr = ared->key; |
||
2746 | slot = htab_find_slot (htab, &ent, NO_INSERT); |
||
2747 | if (slot != NULL) |
||
2748 | { |
||
2749 | BFD_ASSERT (((struct ar_cache *) *slot)->arbfd == abfd); |
||
2750 | htab_clear_slot (htab, slot); |
||
2751 | } |
||
2752 | } |
||
2753 | } |
||
2754 | return TRUE; |
||
2755 | }>>>=>>>>>>>>=>>=>>>=>=><=>>=><=>>>>>>>>>>=>> |