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    Contents of /trunk/mkinitrd-magellan/busybox/coreutils/uname.c

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    Revision 532 - (show annotations) (download)
    Sat Sep 1 22:45:15 2007 UTC (16 years, 8 months ago) by niro
    File MIME type: text/plain
    File size: 2375 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 /* 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 <stdio.h>
    34 #include <stdlib.h>
    35 #include <stddef.h>
    36 #include <string.h>
    37 #include <unistd.h>
    38 #include <sys/types.h>
    39 #include <sys/utsname.h>
    40 #include "busybox.h"
    41
    42 typedef struct {
    43 struct utsname name;
    44 char processor[8]; /* for "unknown" */
    45 } uname_info_t;
    46
    47 static const char options[] = "snrvmpa";
    48 static const unsigned short int utsname_offset[] = {
    49 offsetof(uname_info_t,name.sysname),
    50 offsetof(uname_info_t,name.nodename),
    51 offsetof(uname_info_t,name.release),
    52 offsetof(uname_info_t,name.version),
    53 offsetof(uname_info_t,name.machine),
    54 offsetof(uname_info_t,processor)
    55 };
    56
    57 int uname_main(int argc, char **argv)
    58 {
    59 uname_info_t uname_info;
    60 #if defined(__sparc__) && defined(__linux__)
    61 char *fake_sparc = getenv("FAKE_SPARC");
    62 #endif
    63 const unsigned short int *delta;
    64 char toprint;
    65
    66 toprint = getopt32(argc, argv, options);
    67
    68 if (argc != optind) {
    69 bb_show_usage();
    70 }
    71
    72 if (toprint & (1 << 6)) {
    73 toprint = 0x3f;
    74 }
    75
    76 if (toprint == 0) {
    77 toprint = 1; /* sysname */
    78 }
    79
    80 if (uname(&uname_info.name) == -1) {
    81 bb_error_msg_and_die("cannot get system name");
    82 }
    83
    84 #if defined(__sparc__) && defined(__linux__)
    85 if ((fake_sparc != NULL)
    86 && ((fake_sparc[0] == 'y')
    87 || (fake_sparc[0] == 'Y'))) {
    88 strcpy(uname_info.name.machine, "sparc");
    89 }
    90 #endif
    91
    92 strcpy(uname_info.processor, "unknown");
    93
    94 delta = utsname_offset;
    95 do {
    96 if (toprint & 1) {
    97 printf(((char *)(&uname_info)) + *delta);
    98 if (toprint > 1) {
    99 putchar(' ');
    100 }
    101 }
    102 ++delta;
    103 } while (toprint >>= 1);
    104 putchar('\n');
    105
    106 fflush_stdout_and_exit(EXIT_SUCCESS);
    107 }