Last change
on this file since 3867 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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Rev | Line | |
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[2725] | 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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[3232] | 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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[2725] | 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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