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

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    Revision 815 - (show annotations) (download)
    Fri Apr 24 18:32:46 2009 UTC (15 years, 1 month ago) by niro
    File MIME type: text/plain
    File size: 3203 byte(s) 
    -updated to klibc-1.5.15
    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 static 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 static char *make_hardware(const char *machine)
    53 {
    54 char *hardware;
    55
    56 hardware = strdup(machine);
    57 if (!hardware) {
    58 fprintf(stderr, "strdup() failed: %s\n", strerror(errno));
    59 goto end;
    60 }
    61 if (strlen(hardware) == 4
    62 && hardware[0] == 'i' && hardware[2] == '8' && hardware[3] == '6') {
    63 hardware[1] = '3';
    64 }
    65 end:
    66 return hardware;
    67 }
    68
    69 int main(int argc, char *argv[])
    70 {
    71 int ec = 1;
    72 int opt;
    73 int i;
    74 int nr_pr;
    75 struct utsname buf;
    76 char *uname_fields[UN_NR_FIELDS] = { NULL };
    77
    78 if (-1 == uname(&buf)) {
    79 fprintf(stderr, "uname() failure: %s\n", strerror(errno));
    80 goto end;
    81 }
    82
    83 if (1 == argc)
    84 /* no options given - default to -s */
    85 uname_fields[UN_SYSNAME] = buf.sysname;
    86
    87 while ((opt = getopt(argc, argv, "asnrvmpioh")) != -1) {
    88 switch (opt) {
    89 case 'a':
    90 uname_fields[UN_SYSNAME] = buf.sysname;
    91 uname_fields[UN_NODENAME] = buf.nodename;
    92 uname_fields[UN_RELEASE] = buf.release;
    93 uname_fields[UN_VERSION] = buf.version;
    94 uname_fields[UN_MACHINE] = buf.machine;
    95 uname_fields[UN_HARDWARE] = make_hardware(buf.machine);
    96 if (!uname_fields[UN_HARDWARE])
    97 goto end;
    98 break;
    99 case 's':
    100 uname_fields[UN_SYSNAME] = buf.sysname;
    101 break;
    102 case 'n':
    103 uname_fields[UN_NODENAME] = buf.nodename;
    104 break;
    105 case 'r':
    106 uname_fields[UN_RELEASE] = buf.release;
    107 break;
    108 case 'v':
    109 uname_fields[UN_VERSION] = buf.version;
    110 break;
    111 case 'm':
    112 uname_fields[UN_MACHINE] = buf.machine;
    113 break;
    114 #if NOT_IMPLEMENTED_PROCESSOR
    115 case 'p':
    116 break;
    117 #endif
    118 case 'i':
    119 uname_fields[UN_HARDWARE] = make_hardware(buf.machine);
    120 if (!uname_fields[UN_HARDWARE])
    121 goto end;
    122 break;
    123 #if NOT_IMPLEMENTED_OS
    124 case 'o':
    125 break;
    126 #endif
    127 case 'h':
    128 usage(stdout, argv[0]);
    129 ec = 0;
    130 goto end;
    131 break;
    132 default:
    133 usage(stderr, argv[0]);
    134 goto end;
    135 break;
    136 }
    137 }
    138
    139 for (nr_pr = 0, i = UN_SYSNAME; i < UN_NR_FIELDS; i++) {
    140 if (!uname_fields[i])
    141 continue;
    142 if (nr_pr)
    143 fputc(' ', stdout);
    144 fputs(uname_fields[i], stdout);
    145 nr_pr++;
    146 }
    147 fputc('\n', stdout);
    148
    149 ec = 0;
    150
    151 end:
    152 if (uname_fields[UN_HARDWARE])
    153 free(uname_fields[UN_HARDWARE]);
    154 return ec;
    155 }