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annotate toys/posix/uname.c @ 1401:8a67f42e4f76 draft

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Have single.sh enable I18N and FLOAT.
author Rob Landley <rob@landley.net>
date Mon, 21 Jul 2014 20:03:06 -0500
parents 7a45b9b54d3d
children
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1 /* uname.c - return system name
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2 *
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3 * Copyright 2008 Rob Landley <rob@landley.net>
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4 *
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5 * See http://opengroup.org/onlinepubs/9699919799/utilities/uname.html
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6
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7 USE_UNAME(NEWTOY(uname, "oamvrns[+os]", TOYFLAG_BIN))
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8
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9 config UNAME
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10 bool "uname"
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11 default y
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12 help
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13 usage: uname [-asnrvm]
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15 Print system information.
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17 -s System name
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18 -n Network (domain) name
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19 -r Kernel Release number
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20 -v Kernel Version
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21 -m Machine (hardware) name
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22 -a All of the above
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23 */
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7e846e281e38 New build infrastructure to generate FLAG_ macros and TT alias, #define FOR_commandname before #including toys.h to trigger it. Rename DEFINE_GLOBALS() to just GLOBALS() (because I could never remember if it was DECLARE_GLOBALS). Convert existing commands to use new infrastructure, and replace optflag constants with FLAG_ macros where appropriate.
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25 #define FOR_uname
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26 #include "toys.h"
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27
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28 // If a 32 bit x86 build environment working in a chroot under an x86-64
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29 // kernel returns x86_64 for -m it confuses ./configure. Special case it.
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31 #if defined(__i686__)
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32 #define GROSS "i686"
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33 #elif defined(__i586__)
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34 #define GROSS "i586"
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35 #elif defined(__i486__)
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36 #define GROSS "i486"
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37 #elif defined(__i386__)
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38 #define GROSS "i386"
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39 #endif
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41 void uname_main(void)
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42 {
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43 int i, flags = toys.optflags, needspace=0;
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45 uname((void *)toybuf);
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47 if (!flags) flags = FLAG_s;
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48 for (i=0; i<5; i++) {
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49 char *c = toybuf+(65*i);
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51 if (flags & ((1<<i)|FLAG_a)) {
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52 int len = strlen(c);
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54 // This problem originates in autoconf, so of course the solution
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55 // is horribly ugly.
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56 #ifdef GROSS
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57 if (i==4 && !strcmp(c,"x86_64")) {
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58 printf(GROSS);
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59 continue;
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60 }
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61 #endif
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63 if (needspace++) {
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64 // We can't decrement on the first entry, because
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65 // needspace would be 0
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66 *(--c)=' ';
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67 len++;
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68 }
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69 xwrite(1, c, len);
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70 }
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71 }
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72 putchar('\n');
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73 }