Annotation of /tags/mkinitrd-6_1_11/busybox/networking/hostname.c
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Revision 928 -
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Wed Oct 28 13:31:19 2009 UTC (14 years, 11 months ago) by niro
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File size: 2137 byte(s)
Wed Oct 28 13:31:19 2009 UTC (14 years, 11 months ago) by niro
File MIME type: text/plain
File size: 2137 byte(s)
tagged 'mkinitrd-6_1_11'
1 | niro | 532 | /* 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 | niro | 816 | #include "libbb.h" |
16 | niro | 532 | |
17 | static void do_sethostname(char *s, int isfile) | ||
18 | { | ||
19 | if (!s) | ||
20 | return; | ||
21 | niro | 816 | 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 | niro | 532 | } |
26 | if (ENABLE_FEATURE_CLEAN_UP) | ||
27 | niro | 816 | 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 | niro | 532 | } |
33 | } | ||
34 | |||
35 | niro | 816 | int hostname_main(int argc, char **argv) MAIN_EXTERNALLY_VISIBLE; |
36 | niro | 532 | 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 | niro | 816 | OPT_F = 0x10, |
44 | niro | 532 | OPT_dfis = 0xf, |
45 | }; | ||
46 | |||
47 | niro | 816 | char *buf; |
48 | char *hostname_str; | ||
49 | niro | 532 | |
50 | if (argc < 1) | ||
51 | bb_show_usage(); | ||
52 | |||
53 | niro | 816 | getopt32(argv, "dfisF:", &hostname_str); |
54 | argv += optind; | ||
55 | buf = safe_gethostname(); | ||
56 | niro | 532 | |
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 | niro | 816 | if (p) |
67 | *p = '\0'; | ||
68 | niro | 532 | 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 | niro | 816 | bb_putchar('\n'); |
77 | niro | 532 | } |
78 | } | ||
79 | /* Set the hostname */ | ||
80 | niro | 816 | else if (option_mask32 & OPT_F) { |
81 | niro | 532 | do_sethostname(hostname_str, 1); |
82 | niro | 816 | } else if (argv[0]) { |
83 | do_sethostname(argv[0], 0); | ||
84 | niro | 532 | } |
85 | /* Or if all else fails, | ||
86 | * just print the current hostname */ | ||
87 | else { | ||
88 | puts(buf); | ||
89 | } | ||
90 | niro | 816 | if (ENABLE_FEATURE_CLEAN_UP) |
91 | free(buf); | ||
92 | return EXIT_SUCCESS; | ||
93 | niro | 532 | } |