1 | /* vi: set sw=4 ts=4: */
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2 | /*
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3 | * Mini touch implementation for busybox
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4 | *
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5 | * Copyright (C) 1999-2004 by Erik Andersen <andersen@codepoet.org>
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6 | *
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7 | * Licensed under GPLv2 or later, see file LICENSE in this tarball for details.
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8 | */
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9 |
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10 | /* BB_AUDIT SUSv3 _NOT_ compliant -- options -a, -m, -r, -t not supported. */
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11 | /* http://www.opengroup.org/onlinepubs/007904975/utilities/touch.html */
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12 |
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13 | /* Mar 16, 2003 Manuel Novoa III (mjn3@codepoet.org)
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14 | *
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15 | * Previous version called open() and then utime(). While this will be
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16 | * be necessary to implement -r and -t, it currently only makes things bigger.
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17 | * Also, exiting on a failure was a bug. All args should be processed.
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18 | */
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19 |
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20 | #include "libbb.h"
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21 |
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22 | /* This is a NOFORK applet. Be very careful! */
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23 |
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24 | int touch_main(int argc, char **argv);
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25 | int touch_main(int argc, char **argv)
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26 | {
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27 | int fd;
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28 | int status = EXIT_SUCCESS;
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29 | int flags = getopt32(argv, "c");
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30 |
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31 | argv += optind;
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32 |
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33 | if (!*argv) {
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34 | bb_show_usage();
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35 | }
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36 |
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37 | do {
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38 | if (utime(*argv, NULL)) {
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39 | if (errno == ENOENT) { /* no such file */
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40 | if (flags) { /* Creation is disabled, so ignore. */
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41 | continue;
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42 | }
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43 | /* Try to create the file. */
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44 | fd = open(*argv, O_RDWR | O_CREAT,
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45 | S_IRUSR | S_IWUSR | S_IRGRP | S_IWGRP | S_IROTH | S_IWOTH
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46 | );
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47 | if ((fd >= 0) && !close(fd)) {
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48 | continue;
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49 | }
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50 | }
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51 | status = EXIT_FAILURE;
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52 | bb_perror_msg("%s", *argv);
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53 | }
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54 | } while (*++argv);
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55 |
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56 | return status;
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57 | }
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