Mercurial > hg > toybox
annotate toys/other/readlink.c @ 656:6df4ccc0acbe
Regularize command headers, update links to standards documents.
author | Rob Landley <rob@landley.net> |
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date | Sat, 25 Aug 2012 18:08:51 -0500 |
parents | 2986aa63a021 |
children | 786841fdb1e0 |
rev | line source |
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1 /* vi: set sw=4 ts=4: |
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2 * |
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3 * readlink.c - Return string representation of a symbolic link. |
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Add comments about SUSv3 specs (or lack thereof).
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4 * |
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5 * Copyright 2007 Rob Landley <rob@landley.net> |
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6 |
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7 USE_READLINK(NEWTOY(readlink, "<1f", TOYFLAG_BIN)) |
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8 |
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9 config READLINK |
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10 bool "readlink" |
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11 default n |
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12 help |
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13 usage: readlink |
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14 |
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15 Show what a symbolic link points to. |
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16 |
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17 config READLINK_F |
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18 bool "readlink -f" |
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19 default n |
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20 depends on READLINK |
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21 help |
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22 usage: readlink [-f] |
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23 |
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24 -f Show full cannonical path, with no symlinks in it. Returns |
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25 nonzero if nothing could currently exist at this location. |
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26 */ |
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27 |
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28 #include "toys.h" |
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29 |
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30 void readlink_main(void) |
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31 { |
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32 char *s; |
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33 |
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34 // Calculating full cannonical path? |
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35 |
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Convert another realpath use to xrealpath().
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36 if (CFG_READLINK_F && toys.optflags) s = xrealpath(*toys.optargs); |
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37 else s = xreadlink(*toys.optargs); |
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38 |
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39 if (s) { |
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40 xputs(s); |
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41 if (CFG_TOYBOX_FREE) free(s); |
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42 } else toys.exitval = 1; |
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43 } |