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annotate toys/logname.c @ 624:1e8b9acdafeb

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Genericize llist code a bit: rename llist_free() to llist_traverse(), and no longer accept NULL as a synonym for free.
author Rob Landley <rob@landley.net>
date Sun, 15 Jul 2012 17:22:04 -0500
parents d5fb52b428ed
children
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Elie De Brauwer <eliedebrauwer@gmail.com>
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1 /* vi: set sw=4 ts=4:
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2 *
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3 * logname.c - Print user's login name.
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4 *
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5 * Copyright 2012 Elie De Brauwer <eliedebrauwer@gmail.com>
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6 *
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7 * See http://pubs.opengroup.org/onlinepubs/9699919799/utilities/logname.html
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8
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9 USE_LOGNAME(NEWTOY(logname, ">0", TOYFLAG_BIN))
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10
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11 config LOGNAME
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12 bool "logname"
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13 default y
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14 help
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15 usage: logname
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16
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17 Prints the calling user's name or an error when this cannot be
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18 determined.
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19 */
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20
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21 #include "toys.h"
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22
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23 void logname_main(void)
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24 {
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25 if (getlogin_r(toybuf, sizeof(toybuf))){
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26 error_exit("no login name");
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27 }
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28 xputs(toybuf);
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29 }