| 1 | /* vi: set sw=4 ts=4: */
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| 2 | /* uname -- print system information
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| 3 | * Copyright (C) 1989-1999 Free Software Foundation, Inc.
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| 4 | *
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| 5 | * Licensed under GPLv2 or later, see file LICENSE in this tarball for details.
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| 6 | */
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| 7 |
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| 8 | /* BB_AUDIT SUSv3 compliant */
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| 9 | /* http://www.opengroup.org/onlinepubs/007904975/utilities/uname.html */
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| 10 |
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| 11 | /* Option Example
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| 12 |
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| 13 | -s, --sysname SunOS
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| 14 | -n, --nodename rocky8
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| 15 | -r, --release 4.0
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| 16 | -v, --version
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| 17 | -m, --machine sun
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| 18 | -a, --all SunOS rocky8 4.0 sun
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| 19 |
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| 20 | The default behavior is equivalent to `-s'.
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| 21 |
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| 22 | David MacKenzie <djm@gnu.ai.mit.edu> */
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| 23 |
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| 24 | /* Busyboxed by Erik Andersen */
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| 25 |
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| 26 | /* Further size reductions by Glenn McGrath and Manuel Novoa III. */
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| 27 |
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| 28 | /* Mar 16, 2003 Manuel Novoa III (mjn3@codepoet.org)
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| 29 | *
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| 30 | * Now does proper error checking on i/o. Plus some further space savings.
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| 31 | */
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| 32 |
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| 33 | #include <sys/utsname.h>
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| 34 | #include "libbb.h"
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| 35 |
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| 36 | typedef struct {
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| 37 | struct utsname name;
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| 38 | char processor[8]; /* for "unknown" */
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| 39 | } uname_info_t;
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| 40 |
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| 41 | static const char options[] ALIGN1 = "snrvmpa";
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| 42 | static const unsigned short utsname_offset[] ALIGN2 = {
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| 43 | offsetof(uname_info_t,name.sysname),
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| 44 | offsetof(uname_info_t,name.nodename),
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| 45 | offsetof(uname_info_t,name.release),
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| 46 | offsetof(uname_info_t,name.version),
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| 47 | offsetof(uname_info_t,name.machine),
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| 48 | offsetof(uname_info_t,processor)
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| 49 | };
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| 50 |
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| 51 | int uname_main(int argc, char **argv);
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| 52 | int uname_main(int argc, char **argv)
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| 53 | {
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| 54 | uname_info_t uname_info;
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| 55 | #if defined(__sparc__) && defined(__linux__)
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| 56 | char *fake_sparc = getenv("FAKE_SPARC");
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| 57 | #endif
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| 58 | const unsigned short int *delta;
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| 59 | char toprint;
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| 60 |
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| 61 | toprint = getopt32(argv, options);
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| 62 |
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| 63 | if (argc != optind) {
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| 64 | bb_show_usage();
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| 65 | }
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| 66 |
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| 67 | if (toprint & (1 << 6)) {
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| 68 | toprint = 0x3f;
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| 69 | }
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| 70 |
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| 71 | if (toprint == 0) {
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| 72 | toprint = 1; /* sysname */
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| 73 | }
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| 74 |
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| 75 | if (uname(&uname_info.name) == -1) {
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| 76 | bb_error_msg_and_die("cannot get system name");
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| 77 | }
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| 78 |
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| 79 | #if defined(__sparc__) && defined(__linux__)
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| 80 | if ((fake_sparc != NULL)
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| 81 | && ((fake_sparc[0] == 'y')
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| 82 | || (fake_sparc[0] == 'Y'))) {
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| 83 | strcpy(uname_info.name.machine, "sparc");
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| 84 | }
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| 85 | #endif
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| 86 |
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| 87 | strcpy(uname_info.processor, "unknown");
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| 88 |
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| 89 | delta = utsname_offset;
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| 90 | do {
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| 91 | if (toprint & 1) {
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| 92 | printf(((char *)(&uname_info)) + *delta);
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| 93 | if (toprint > 1) {
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| 94 | putchar(' ');
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| 95 | }
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| 96 | }
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| 97 | ++delta;
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| 98 | } while (toprint >>= 1);
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| 99 | putchar('\n');
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| 100 |
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| 101 | fflush_stdout_and_exit(EXIT_SUCCESS);
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| 102 | }
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