Contents of /tags/mkinitrd-6_2_1/busybox/miscutils/wall.c
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Sun May 30 12:16:23 2010 UTC (14 years, 3 months ago) by niro
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File size: 837 byte(s)
Sun May 30 12:16:23 2010 UTC (14 years, 3 months ago) by niro
File MIME type: text/plain
File size: 837 byte(s)
tagged 'mkinitrd-6_2_1'
1 | /* vi: set sw=4 ts=4: */ |
2 | /* |
3 | * wall - write a message to all logged-in users |
4 | * Copyright (c) 2009 Bernhard Reutner-Fischer |
5 | * |
6 | * Licensed under GPLv2 or later, see file LICENSE in this tarball for details. |
7 | */ |
8 | |
9 | #include "libbb.h" |
10 | #include <utmp.h> |
11 | |
12 | int wall_main(int argc, char **argv) MAIN_EXTERNALLY_VISIBLE; |
13 | int wall_main(int argc UNUSED_PARAM, char **argv) |
14 | { |
15 | struct utmp *ut; |
16 | char *msg; |
17 | int fd = argv[1] ? xopen(argv[1], O_RDONLY) : STDIN_FILENO; |
18 | |
19 | msg = xmalloc_read(fd, NULL); |
20 | if (ENABLE_FEATURE_CLEAN_UP && argv[1]) |
21 | close(fd); |
22 | setutent(); |
23 | while ((ut = getutent()) != NULL) { |
24 | char *line; |
25 | if (ut->ut_type != USER_PROCESS) |
26 | continue; |
27 | line = concat_path_file("/dev", ut->ut_line); |
28 | xopen_xwrite_close(line, msg); |
29 | free(line); |
30 | } |
31 | if (ENABLE_FEATURE_CLEAN_UP) { |
32 | endutent(); |
33 | free(msg); |
34 | } |
35 | return EXIT_SUCCESS; |
36 | } |