1/* vi: set sw=4 ts=4: */
2/* uname -- print system information
3   Copyright (C) 1989-1999 Free Software Foundation, Inc.
4
5   This program is free software; you can redistribute it and/or modify
6   it under the terms of the GNU General Public License as published by
7   the Free Software Foundation; either version 2, or (at your option)
8   any later version.
9
10   This program is distributed in the hope that it will be useful,
11   but WITHOUT ANY WARRANTY; without even the implied warranty of
12   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
13   GNU General Public License for more details.
14
15   You should have received a copy of the GNU General Public License
16   along with this program; if not, write to the Free Software Foundation,
17   Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.  */
18
19/* Option		Example
20
21   -s, --sysname	SunOS
22   -n, --nodename	rocky8
23   -r, --release	4.0
24   -v, --version
25   -m, --machine	sun
26   -a, --all		SunOS rocky8 4.0  sun
27
28   The default behavior is equivalent to `-s'.
29
30   David MacKenzie <djm@gnu.ai.mit.edu> */
31
32/* Busyboxed by Erik Andersen */
33
34#include <stdio.h>
35#include <stdlib.h>
36#include <string.h>
37#include <sys/types.h>
38#include <sys/utsname.h>
39
40#if defined(HAVE_SYSINFO) && defined(HAVE_SYS_SYSTEMINFO_H)
41# include <sys/systeminfo.h>
42#endif
43#include "busybox.h"
44
45static void print_element(unsigned int mask, char *element);
46
47/* Values that are bitwise or'd into `toprint'. */
48/* Operating system name. */
49static const int PRINT_SYSNAME = 1;
50
51/* Node name on a communications network. */
52static const int PRINT_NODENAME = 2;
53
54/* Operating system release. */
55static const int PRINT_RELEASE = 4;
56
57/* Operating system version. */
58static const int PRINT_VERSION = 8;
59
60/* Machine hardware name. */
61static const int PRINT_MACHINE = 16;
62
63 /* Host processor type. */
64static const int PRINT_PROCESSOR = 32;
65
66/* Mask indicating which elements of the name to print. */
67static unsigned char toprint;
68
69
70int uname_main(int argc, char **argv)
71{
72	struct utsname name;
73	char processor[256];
74
75#if defined(__sparc__) && defined(__linux__)
76	char *fake_sparc = getenv("FAKE_SPARC");
77#endif
78
79	toprint = 0;
80
81	/* Parse any options */
82	//fprintf(stderr, "argc=%d, argv=%s\n", argc, *argv);
83	while (--argc > 0 && **(++argv) == '-') {
84		while (*(++(*argv))) {
85			switch (**argv) {
86			case 's':
87				toprint |= PRINT_SYSNAME;
88				break;
89			case 'n':
90				toprint |= PRINT_NODENAME;
91				break;
92			case 'r':
93				toprint |= PRINT_RELEASE;
94				break;
95			case 'v':
96				toprint |= PRINT_VERSION;
97				break;
98			case 'm':
99				toprint |= PRINT_MACHINE;
100				break;
101			case 'p':
102				toprint |= PRINT_PROCESSOR;
103				break;
104			case 'a':
105				toprint = (PRINT_SYSNAME | PRINT_NODENAME | PRINT_RELEASE |
106						   PRINT_PROCESSOR | PRINT_VERSION |
107						   PRINT_MACHINE);
108				break;
109			default:
110				show_usage();
111			}
112		}
113	}
114
115	if (toprint == 0)
116		toprint = PRINT_SYSNAME;
117
118	if (uname(&name) == -1)
119		perror_msg("cannot get system name");
120
121#if defined(HAVE_SYSINFO) && defined(SI_ARCHITECTURE)
122	if (sysinfo(SI_ARCHITECTURE, processor, sizeof(processor)) == -1)
123		perror_msg("cannot get processor type");
124}
125
126#else
127	strcpy(processor, "unknown");
128#endif
129
130#if defined(__sparc__) && defined(__linux__)
131	if (fake_sparc != NULL
132		&& (fake_sparc[0] == 'y'
133			|| fake_sparc[0] == 'Y')) strcpy(name.machine, "sparc");
134#endif
135
136	print_element(PRINT_SYSNAME, name.sysname);
137	print_element(PRINT_NODENAME, name.nodename);
138	print_element(PRINT_RELEASE, name.release);
139	print_element(PRINT_VERSION, name.version);
140	print_element(PRINT_MACHINE, name.machine);
141	print_element(PRINT_PROCESSOR, processor);
142
143	return EXIT_SUCCESS;
144}
145
146/* If the name element set in MASK is selected for printing in `toprint',
147   print ELEMENT; then print a space unless it is the last element to
148   be printed, in which case print a newline. */
149
150static void print_element(unsigned int mask, char *element)
151{
152	if (toprint & mask) {
153		toprint &= ~mask;
154		printf("%s%c", element, toprint ? ' ' : '\n');
155	}
156}
157