Contents of /trunk/mkinitrd-magellan/busybox/networking/hostname.c
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Revision 816 -
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Fri Apr 24 18:33:46 2009 UTC (15 years, 5 months ago) by niro
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Fri Apr 24 18:33:46 2009 UTC (15 years, 5 months ago) by niro
File MIME type: text/plain
File size: 2137 byte(s)
-updated to busybox-1.13.4
1 | /* vi: set sw=4 ts=4: */ |
2 | /* |
3 | * Mini hostname implementation for busybox |
4 | * |
5 | * Copyright (C) 1999 by Randolph Chung <tausq@debian.org> |
6 | * |
7 | * adjusted by Erik Andersen <andersen@codepoet.org> to remove |
8 | * use of long options and GNU getopt. Improved the usage info. |
9 | * |
10 | * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA |
11 | * |
12 | * Licensed under GPLv2 or later, see file LICENSE in this tarball for details. |
13 | */ |
14 | |
15 | #include "libbb.h" |
16 | |
17 | static void do_sethostname(char *s, int isfile) |
18 | { |
19 | if (!s) |
20 | return; |
21 | if (isfile) { |
22 | parser_t *parser = config_open2(s, xfopen_for_read); |
23 | while (config_read(parser, &s, 1, 1, "# \t", PARSE_NORMAL & ~PARSE_GREEDY)) { |
24 | do_sethostname(s, 0); |
25 | } |
26 | if (ENABLE_FEATURE_CLEAN_UP) |
27 | config_close(parser); |
28 | } else if (sethostname(s, strlen(s)) < 0) { |
29 | if (errno == EPERM) |
30 | bb_error_msg_and_die(bb_msg_perm_denied_are_you_root); |
31 | bb_perror_msg_and_die("sethostname"); |
32 | } |
33 | } |
34 | |
35 | int hostname_main(int argc, char **argv) MAIN_EXTERNALLY_VISIBLE; |
36 | int hostname_main(int argc, char **argv) |
37 | { |
38 | enum { |
39 | OPT_d = 0x1, |
40 | OPT_f = 0x2, |
41 | OPT_i = 0x4, |
42 | OPT_s = 0x8, |
43 | OPT_F = 0x10, |
44 | OPT_dfis = 0xf, |
45 | }; |
46 | |
47 | char *buf; |
48 | char *hostname_str; |
49 | |
50 | if (argc < 1) |
51 | bb_show_usage(); |
52 | |
53 | getopt32(argv, "dfisF:", &hostname_str); |
54 | argv += optind; |
55 | buf = safe_gethostname(); |
56 | |
57 | /* Output in desired format */ |
58 | if (option_mask32 & OPT_dfis) { |
59 | struct hostent *hp; |
60 | char *p; |
61 | hp = xgethostbyname(buf); |
62 | p = strchr(hp->h_name, '.'); |
63 | if (option_mask32 & OPT_f) { |
64 | puts(hp->h_name); |
65 | } else if (option_mask32 & OPT_s) { |
66 | if (p) |
67 | *p = '\0'; |
68 | puts(hp->h_name); |
69 | } else if (option_mask32 & OPT_d) { |
70 | if (p) |
71 | puts(p + 1); |
72 | } else if (option_mask32 & OPT_i) { |
73 | while (hp->h_addr_list[0]) { |
74 | printf("%s ", inet_ntoa(*(struct in_addr *) (*hp->h_addr_list++))); |
75 | } |
76 | bb_putchar('\n'); |
77 | } |
78 | } |
79 | /* Set the hostname */ |
80 | else if (option_mask32 & OPT_F) { |
81 | do_sethostname(hostname_str, 1); |
82 | } else if (argv[0]) { |
83 | do_sethostname(argv[0], 0); |
84 | } |
85 | /* Or if all else fails, |
86 | * just print the current hostname */ |
87 | else { |
88 | puts(buf); |
89 | } |
90 | if (ENABLE_FEATURE_CLEAN_UP) |
91 | free(buf); |
92 | return EXIT_SUCCESS; |
93 | } |