Contents of /trunk/mkinitrd-magellan/busybox/networking/hostname.c
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Sat Sep 1 22:45:15 2007 UTC (17 years ago) by niro
File MIME type: text/plain
File size: 2197 byte(s)
Sat Sep 1 22:45:15 2007 UTC (17 years ago) by niro
File MIME type: text/plain
File size: 2197 byte(s)
-import if magellan mkinitrd; it is a fork of redhats mkinitrd-5.0.8 with all magellan patches and features; deprecates magellan-src/mkinitrd
1 | /* vi: set sw=4 ts=4: */ |
2 | /* |
3 | * $Id: hostname.c,v 1.1 2007-09-01 22:43:53 niro Exp $ |
4 | * Mini hostname implementation for busybox |
5 | * |
6 | * Copyright (C) 1999 by Randolph Chung <tausq@debian.org> |
7 | * |
8 | * adjusted by Erik Andersen <andersen@codepoet.org> to remove |
9 | * use of long options and GNU getopt. Improved the usage info. |
10 | * |
11 | * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA |
12 | * |
13 | * Licensed under GPLv2 or later, see file LICENSE in this tarball for details. |
14 | */ |
15 | |
16 | #include "busybox.h" |
17 | |
18 | static void do_sethostname(char *s, int isfile) |
19 | { |
20 | FILE *f; |
21 | |
22 | if (!s) |
23 | return; |
24 | if (!isfile) { |
25 | if (sethostname(s, strlen(s)) < 0) { |
26 | if (errno == EPERM) |
27 | bb_error_msg_and_die(bb_msg_perm_denied_are_you_root); |
28 | else |
29 | bb_perror_msg_and_die("sethostname"); |
30 | } |
31 | } else { |
32 | f = xfopen(s, "r"); |
33 | while (fgets(bb_common_bufsiz1, sizeof(bb_common_bufsiz1), f) != NULL) { |
34 | if (bb_common_bufsiz1[0] == '#') { |
35 | continue; |
36 | } |
37 | chomp(bb_common_bufsiz1); |
38 | do_sethostname(bb_common_bufsiz1, 0); |
39 | } |
40 | if (ENABLE_FEATURE_CLEAN_UP) |
41 | fclose(f); |
42 | } |
43 | } |
44 | |
45 | int hostname_main(int argc, char **argv) |
46 | { |
47 | enum { |
48 | OPT_d = 0x1, |
49 | OPT_f = 0x2, |
50 | OPT_i = 0x4, |
51 | OPT_s = 0x8, |
52 | OPT_dfis = 0xf, |
53 | }; |
54 | |
55 | char buf[256]; |
56 | char *hostname_str = NULL; |
57 | |
58 | if (argc < 1) |
59 | bb_show_usage(); |
60 | |
61 | getopt32(argc, argv, "dfisF:", &hostname_str); |
62 | |
63 | /* Output in desired format */ |
64 | if (option_mask32 & OPT_dfis) { |
65 | struct hostent *hp; |
66 | char *p; |
67 | gethostname(buf, sizeof(buf)); |
68 | hp = xgethostbyname(buf); |
69 | p = strchr(hp->h_name, '.'); |
70 | if (option_mask32 & OPT_f) { |
71 | puts(hp->h_name); |
72 | } else if (option_mask32 & OPT_s) { |
73 | if (p != NULL) { |
74 | *p = 0; |
75 | } |
76 | puts(hp->h_name); |
77 | } else if (option_mask32 & OPT_d) { |
78 | if (p) |
79 | puts(p + 1); |
80 | } else if (option_mask32 & OPT_i) { |
81 | while (hp->h_addr_list[0]) { |
82 | printf("%s ", inet_ntoa(*(struct in_addr *) (*hp->h_addr_list++))); |
83 | } |
84 | puts(""); |
85 | } |
86 | } |
87 | /* Set the hostname */ |
88 | else if (hostname_str != NULL) { |
89 | do_sethostname(hostname_str, 1); |
90 | } else if (optind < argc) { |
91 | do_sethostname(argv[optind], 0); |
92 | } |
93 | /* Or if all else fails, |
94 | * just print the current hostname */ |
95 | else { |
96 | gethostname(buf, sizeof(buf)); |
97 | puts(buf); |
98 | } |
99 | return 0; |
100 | } |