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    Contents of /trunk/mkinitrd-magellan/klibc/usr/utils/uname.c

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    Revision 532 - (show annotations) (download)
    Sat Sep 1 22:45:15 2007 UTC (16 years, 9 months ago) by niro
    File MIME type: text/plain
    File size: 3193 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 /*
    2 * by tlh
    3 *
    4 * The uname program for system information: kernel name, kernel
    5 * release, kernel release, machine, processor, platform, os and
    6 * hostname.
    7 */
    8
    9 #include <stdio.h>
    10 #include <stdlib.h>
    11 #include <errno.h>
    12 #include <string.h>
    13 #include <sys/utsname.h>
    14
    15 enum uname_fields {
    16 UN_SYSNAME,
    17 UN_NODENAME,
    18 UN_RELEASE,
    19 UN_VERSION,
    20 UN_MACHINE,
    21 #if NOT_IMPLEMENTED_PROCESSOR
    22 UN_PROCESSOR,
    23 #endif
    24 UN_HARDWARE,
    25 #if NOT_IMPLEMENTED_OS
    26 UN_OS,
    27 #endif
    28 UN_NR_FIELDS
    29 };
    30
    31 void usage(FILE * stream, const char *progname)
    32 {
    33 fprintf(stream,
    34 "Usage: %s [OPTION] . . .\n"
    35 "Print system information, No options defaults to -s.\n"
    36 "\n"
    37 " -a print all the information in the same order as follows below\n"
    38 " -s kernel name\n"
    39 " -n network node name (hostname)\n"
    40 " -r kernel release\n"
    41 " -v kernel version\n" " -m machine hardware name\n"
    42 #if NOT_IMPLEMENTED_PROCESSOR
    43 " -p processor type\n"
    44 #endif
    45 " -i hardware platform\n"
    46 #if NOT_IMPLEMENTED_OS
    47 " -o operating system\n"
    48 #endif
    49 "\n" " -h help/usage\n" "\n", progname);
    50 }
    51
    52 char *make_hardware(const char *machine)
    53 {
    54 char *hardware;
    55
    56 if (!(hardware = strdup(machine))) {
    57 fprintf(stderr, "strdup() failed: %s\n", strerror(errno));
    58 goto end;
    59 }
    60 if (strlen(hardware) == 4
    61 && hardware[0] == 'i' && hardware[2] == '8' && hardware[3] == '6') {
    62 hardware[1] = '3';
    63 }
    64 end:
    65 return hardware;
    66 }
    67
    68 int main(int argc, char *argv[])
    69 {
    70 int ec = 1;
    71 int opt;
    72 int i;
    73 int nr_pr;
    74 struct utsname buf;
    75 char *uname_fields[UN_NR_FIELDS] = { NULL };
    76
    77 if (-1 == uname(&buf)) {
    78 fprintf(stderr, "uname() failure: %s\n", strerror(errno));
    79 goto end;
    80 }
    81
    82 if (1 == argc)
    83 /* no options given - default to -s */
    84 uname_fields[UN_SYSNAME] = buf.sysname;
    85
    86 while ((opt = getopt(argc, argv, "asnrvmpioh")) != -1) {
    87 switch (opt) {
    88 case 'a':
    89 uname_fields[UN_SYSNAME] = buf.sysname;
    90 uname_fields[UN_NODENAME] = buf.nodename;
    91 uname_fields[UN_RELEASE] = buf.release;
    92 uname_fields[UN_VERSION] = buf.version;
    93 uname_fields[UN_MACHINE] = buf.machine;
    94 uname_fields[UN_HARDWARE] = make_hardware(buf.machine);
    95 if (!uname_fields[UN_HARDWARE])
    96 goto end;
    97 break;
    98 case 's':
    99 uname_fields[UN_SYSNAME] = buf.sysname;
    100 break;
    101 case 'n':
    102 uname_fields[UN_NODENAME] = buf.nodename;
    103 break;
    104 case 'r':
    105 uname_fields[UN_RELEASE] = buf.release;
    106 break;
    107 case 'v':
    108 uname_fields[UN_VERSION] = buf.version;
    109 break;
    110 case 'm':
    111 uname_fields[UN_MACHINE] = buf.machine;
    112 break;
    113 #if NOT_IMPLEMENTED_PROCESSOR
    114 case 'p':
    115 break;
    116 #endif
    117 case 'i':
    118 uname_fields[UN_HARDWARE] = make_hardware(buf.machine);
    119 if (!uname_fields[UN_HARDWARE])
    120 goto end;
    121 break;
    122 #if NOT_IMPLEMENTED_OS
    123 case 'o':
    124 break;
    125 #endif
    126 case 'h':
    127 usage(stdout, argv[0]);
    128 ec = 0;
    129 goto end;
    130 break;
    131 default:
    132 usage(stderr, argv[0]);
    133 goto end;
    134 break;
    135 }
    136 }
    137
    138 for (nr_pr = 0, i = UN_SYSNAME; i < UN_NR_FIELDS; i++) {
    139 if (!uname_fields[i])
    140 continue;
    141 if (nr_pr)
    142 fputc(' ', stdout);
    143 fputs(uname_fields[i], stdout);
    144 nr_pr++;
    145 }
    146 fputc('\n', stdout);
    147
    148 ec = 0;
    149
    150 end:
    151 if (uname_fields[UN_HARDWARE])
    152 free(uname_fields[UN_HARDWARE]);
    153 return ec;
    154 }