Contents of /tags/mkinitrd-6_1_3/busybox/coreutils/uname.c
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Mon May 4 18:51:23 2009 UTC (15 years, 4 months ago) by niro
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Mon May 4 18:51:23 2009 UTC (15 years, 4 months ago) by niro
File MIME type: text/plain
File size: 2383 byte(s)
tagged 'mkinitrd-6_1_3'
1 | /* vi: set sw=4 ts=4: */ |
2 | /* uname -- print system information |
3 | * Copyright (C) 1989-1999 Free Software Foundation, Inc. |
4 | * |
5 | * Licensed under GPLv2 or later, see file LICENSE in this tarball for details. |
6 | */ |
7 | |
8 | /* BB_AUDIT SUSv3 compliant */ |
9 | /* http://www.opengroup.org/onlinepubs/007904975/utilities/uname.html */ |
10 | |
11 | /* Option Example |
12 | |
13 | -s, --sysname SunOS |
14 | -n, --nodename rocky8 |
15 | -r, --release 4.0 |
16 | -v, --version |
17 | -m, --machine sun |
18 | -a, --all SunOS rocky8 4.0 sun |
19 | |
20 | The default behavior is equivalent to '-s'. |
21 | |
22 | David MacKenzie <djm@gnu.ai.mit.edu> */ |
23 | |
24 | /* Busyboxed by Erik Andersen */ |
25 | |
26 | /* Further size reductions by Glenn McGrath and Manuel Novoa III. */ |
27 | |
28 | /* Mar 16, 2003 Manuel Novoa III (mjn3@codepoet.org) |
29 | * |
30 | * Now does proper error checking on i/o. Plus some further space savings. |
31 | */ |
32 | |
33 | #include <sys/utsname.h> |
34 | #include "libbb.h" |
35 | |
36 | typedef struct { |
37 | struct utsname name; |
38 | char processor[8]; /* for "unknown" */ |
39 | } uname_info_t; |
40 | |
41 | static const char options[] ALIGN1 = "snrvmpa"; |
42 | static const unsigned short utsname_offset[] = { |
43 | offsetof(uname_info_t, name.sysname), |
44 | offsetof(uname_info_t, name.nodename), |
45 | offsetof(uname_info_t, name.release), |
46 | offsetof(uname_info_t, name.version), |
47 | offsetof(uname_info_t, name.machine), |
48 | offsetof(uname_info_t, processor) |
49 | }; |
50 | |
51 | int uname_main(int argc, char **argv) MAIN_EXTERNALLY_VISIBLE; |
52 | int uname_main(int argc UNUSED_PARAM, char **argv) |
53 | { |
54 | uname_info_t uname_info; |
55 | #if defined(__sparc__) && defined(__linux__) |
56 | char *fake_sparc = getenv("FAKE_SPARC"); |
57 | #endif |
58 | const unsigned short *delta; |
59 | char toprint; |
60 | |
61 | toprint = getopt32(argv, options); |
62 | |
63 | if (argv[optind]) { /* coreutils-6.9 compat */ |
64 | bb_show_usage(); |
65 | } |
66 | |
67 | if (toprint & (1 << 6)) { /* -a => all opts on */ |
68 | toprint = 0x3f; |
69 | } |
70 | |
71 | if (toprint == 0) { /* no opts => -s (sysname) */ |
72 | toprint = 1; |
73 | } |
74 | |
75 | uname(&uname_info.name); /* never fails */ |
76 | |
77 | #if defined(__sparc__) && defined(__linux__) |
78 | if (fake_sparc && (fake_sparc[0] | 0x20) == 'y') { |
79 | strcpy(uname_info.name.machine, "sparc"); |
80 | } |
81 | #endif |
82 | |
83 | strcpy(uname_info.processor, "unknown"); |
84 | |
85 | delta = utsname_offset; |
86 | do { |
87 | if (toprint & 1) { |
88 | /* printf would not be safe here */ |
89 | fputs((char *)(&uname_info) + *delta, stdout); |
90 | if (toprint > 1) { |
91 | bb_putchar(' '); |
92 | } |
93 | } |
94 | ++delta; |
95 | } while (toprint >>= 1); |
96 | bb_putchar('\n'); |
97 | |
98 | fflush_stdout_and_exit(EXIT_SUCCESS); /* coreutils-6.9 compat */ |
99 | } |