Last change
on this file since 3801 was 3232, checked in by Bruno Cornec, 11 years ago |
- Update mindi-busybox to 1.21.1
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-
Property svn:eol-style
set to
native
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File size:
1.0 KB
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1 | /* vi: set sw=4 ts=4: */
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2 | /*
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3 | * wall - write a message to all logged-in users
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4 | * Copyright (c) 2009 Bernhard Reutner-Fischer
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5 | *
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6 | * Licensed under GPLv2 or later, see file LICENSE in this source tree.
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7 | */
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8 |
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9 | //usage:#define wall_trivial_usage
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10 | //usage: "[FILE]"
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11 | //usage:#define wall_full_usage "\n\n"
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12 | //usage: "Write content of FILE or stdin to all logged-in users"
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13 | //usage:
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14 | //usage:#define wall_sample_usage
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15 | //usage: "echo foo | wall\n"
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16 | //usage: "wall ./mymessage"
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17 |
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18 | #include "libbb.h"
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19 |
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20 | int wall_main(int argc, char **argv) MAIN_EXTERNALLY_VISIBLE;
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21 | int wall_main(int argc UNUSED_PARAM, char **argv)
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22 | {
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23 | struct utmp *ut;
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24 | char *msg;
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25 | int fd = argv[1] ? xopen(argv[1], O_RDONLY) : STDIN_FILENO;
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26 |
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27 | msg = xmalloc_read(fd, NULL);
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28 | if (ENABLE_FEATURE_CLEAN_UP && argv[1])
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29 | close(fd);
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30 | setutent();
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31 | while ((ut = getutent()) != NULL) {
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32 | char *line;
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33 | if (ut->ut_type != USER_PROCESS)
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34 | continue;
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35 | line = concat_path_file("/dev", ut->ut_line);
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36 | xopen_xwrite_close(line, msg);
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37 | free(line);
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38 | }
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39 | if (ENABLE_FEATURE_CLEAN_UP) {
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40 | endutent();
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41 | free(msg);
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42 | }
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43 | return EXIT_SUCCESS;
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44 | }
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