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67b23e6043
It is impossible to formulate sane ABI based on size of ulong because it can be 32-bit or 64-bit. Basically it means that you cannot portably use more that 32 option chars in one call anyway... Make it explicit.
108 lines
2.3 KiB
C
108 lines
2.3 KiB
C
/* vi: set sw=4 ts=4: */
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/* uname -- print system information
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* Copyright (C) 1989-1999 Free Software Foundation, Inc.
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*
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* Licensed under GPLv2 or later, see file LICENSE in this tarball for details.
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*/
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/* BB_AUDIT SUSv3 compliant */
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/* http://www.opengroup.org/onlinepubs/007904975/utilities/uname.html */
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/* Option Example
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-s, --sysname SunOS
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-n, --nodename rocky8
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-r, --release 4.0
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-v, --version
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-m, --machine sun
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-a, --all SunOS rocky8 4.0 sun
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The default behavior is equivalent to `-s'.
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David MacKenzie <djm@gnu.ai.mit.edu> */
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/* Busyboxed by Erik Andersen */
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/* Further size reductions by Glenn McGrath and Manuel Novoa III. */
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/* Mar 16, 2003 Manuel Novoa III (mjn3@codepoet.org)
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*
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* Now does proper error checking on i/o. Plus some further space savings.
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*/
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#include <stdio.h>
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#include <stdlib.h>
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#include <stddef.h>
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#include <string.h>
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#include <unistd.h>
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#include <sys/types.h>
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#include <sys/utsname.h>
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#include "busybox.h"
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typedef struct {
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struct utsname name;
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char processor[8]; /* for "unknown" */
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} uname_info_t;
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static const char options[] = "snrvmpa";
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static const unsigned short int utsname_offset[] = {
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offsetof(uname_info_t,name.sysname),
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offsetof(uname_info_t,name.nodename),
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offsetof(uname_info_t,name.release),
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offsetof(uname_info_t,name.version),
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offsetof(uname_info_t,name.machine),
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offsetof(uname_info_t,processor)
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};
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int uname_main(int argc, char **argv)
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{
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uname_info_t uname_info;
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#if defined(__sparc__) && defined(__linux__)
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char *fake_sparc = getenv("FAKE_SPARC");
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#endif
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const unsigned short int *delta;
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char toprint;
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toprint = getopt32(argc, argv, options);
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if (argc != optind) {
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bb_show_usage();
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}
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if (toprint & (1 << 6)) {
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toprint = 0x3f;
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}
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if (toprint == 0) {
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toprint = 1; /* sysname */
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}
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if (uname(&uname_info.name) == -1) {
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bb_error_msg_and_die("cannot get system name");
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}
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#if defined(__sparc__) && defined(__linux__)
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if ((fake_sparc != NULL)
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&& ((fake_sparc[0] == 'y')
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|| (fake_sparc[0] == 'Y'))) {
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strcpy(uname_info.name.machine, "sparc");
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}
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#endif
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strcpy(uname_info.processor, "unknown");
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delta=utsname_offset;
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do {
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if (toprint & 1) {
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bb_printf(((char *)(&uname_info)) + *delta);
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if (toprint > 1) {
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putchar(' ');
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}
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}
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++delta;
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} while (toprint >>= 1);
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putchar('\n');
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bb_fflush_stdout_and_exit(EXIT_SUCCESS);
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}
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