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/* vi: set sw=4 ts=4: */ /* uname -- print system information * Copyright (C) 1989-1999 Free Software Foundation, Inc. * * Licensed under GPLv2 or later, see file LICENSE in this tarball for details. */ /* BB_AUDIT SUSv3 compliant */ /* http://www.opengroup.org/onlinepubs/007904975/utilities/uname.html */ /* Option Example -s, --sysname SunOS -n, --nodename rocky8 -r, --release 4.0 -v, --version -m, --machine sun -a, --all SunOS rocky8 4.0 sun The default behavior is equivalent to `-s'. David MacKenzie <djm@gnu.ai.mit.edu> */ /* Busyboxed by Erik Andersen */ /* Further size reductions by Glenn McGrath and Manuel Novoa III. */ /* Mar 16, 2003 Manuel Novoa III (mjn3@codepoet.org) * * Now does proper error checking on i/o. Plus some further space savings. */ #include <sys/utsname.h> #include "libbb.h" typedef struct { struct utsname name; char processor[8]; /* for "unknown" */ } uname_info_t; static const char options[] = "snrvmpa"; static const unsigned short int utsname_offset[] = { offsetof(uname_info_t,name.sysname), offsetof(uname_info_t,name.nodename), offsetof(uname_info_t,name.release), offsetof(uname_info_t,name.version), offsetof(uname_info_t,name.machine), offsetof(uname_info_t,processor) }; int uname_main(int argc, char **argv); int uname_main(int argc, char **argv) { uname_info_t uname_info; #if defined(__sparc__) && defined(__linux__) char *fake_sparc = getenv("FAKE_SPARC"); #endif const unsigned short int *delta; char toprint; toprint = getopt32(argc, argv, options); if (argc != optind) { bb_show_usage(); } if (toprint & (1 << 6)) { toprint = 0x3f; } if (toprint == 0) { toprint = 1; /* sysname */ } if (uname(&uname_info.name) == -1) { bb_error_msg_and_die("cannot get system name"); } #if defined(__sparc__) && defined(__linux__) if ((fake_sparc != NULL) && ((fake_sparc[0] == 'y') || (fake_sparc[0] == 'Y'))) { strcpy(uname_info.name.machine, "sparc"); } #endif strcpy(uname_info.processor, "unknown"); delta = utsname_offset; do { if (toprint & 1) { printf(((char *)(&uname_info)) + *delta); if (toprint > 1) { putchar(' '); } } ++delta; } while (toprint >>= 1); putchar('\n'); fflush_stdout_and_exit(EXIT_SUCCESS); } |