busybox/coreutils/uname.c

/* 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>
 *
 * GNU coreutils 6.10:
 * Option:                      struct   Example(s):
 *                              utsname
 *                              field:
 * -s, --kernel-name            sysname  Linux
 * -n, --nodename               nodename localhost.localdomain
 * -r, --kernel-release         release  2.6.29
 * -v, --kernel-version         version  #1 SMP Sun Jan 11 20:52:37 EST 2009
 * -m, --machine                machine  x86_64   i686
 * -p, --processor              (none)   x86_64   i686
 * -i, --hardware-platform      (none)   x86_64   i386
 *      NB: vanilla coreutils reports "unknown" -p and -i,
 *      x86_64 and i686/i386 shown above are Fedora's inventions.
 * -o, --operating-system       (none)   GNU/Linux
 * -a, --all: all of the above, in the order shown.
 *      If -p or -i is not known, don't show them
 */

/* Busyboxed by Erik Andersen
 *
 * Before 2003: Glenn McGrath and Manuel Novoa III
 *  Further size reductions.
 * Mar 16, 2003: Manuel Novoa III (mjn3@codepoet.org)
 *  Now does proper error checking on i/o.  Plus some further space savings.
 * Jan 2009:
 *  Fix handling of -a to not print "unknown", add -o and -i support.
 */

#include "libbb.h"
/* After libbb.h, since it needs sys/types.h on some systems */
#include <sys/utsname.h>

typedef struct {
	struct utsname name;
	char processor[sizeof(((struct utsname*)NULL)->machine)];
	char platform[sizeof(((struct utsname*)NULL)->machine)];
	char os[sizeof("GNU/Linux")];
} uname_info_t;

static const char options[] ALIGN1 = "snrvmpioa";
static const unsigned short utsname_offset[] = {
	offsetof(uname_info_t, name.sysname), /* -s */
	offsetof(uname_info_t, name.nodename), /* -n */
	offsetof(uname_info_t, name.release), /* -r */
	offsetof(uname_info_t, name.version), /* -v */
	offsetof(uname_info_t, name.machine), /* -m */
	offsetof(uname_info_t, processor), /* -p */
	offsetof(uname_info_t, platform), /* -i */
	offsetof(uname_info_t, os), /* -o */
};

int uname_main(int argc, char **argv) MAIN_EXTERNALLY_VISIBLE;
int uname_main(int argc UNUSED_PARAM, char **argv)
{
#if ENABLE_LONG_OPTS
	static const char uname_longopts[] ALIGN1 =
		/* name, has_arg, val */
		"all\0"               No_argument       "a"
		"kernel-name\0"       No_argument       "s"
		"nodename\0"          No_argument       "n"
		"kernel-release\0"    No_argument       "r"
		"release\0"           No_argument       "r"
		"kernel-version\0"    No_argument       "v"
		"machine\0"           No_argument       "m"
		"processor\0"         No_argument       "p"
		"hardware-platform\0" No_argument       "i"
		"operating-system\0"  No_argument       "o"
	;
#endif
	uname_info_t uname_info;
#if defined(__sparc__) && defined(__linux__)
	char *fake_sparc = getenv("FAKE_SPARC");
#endif
	const char *unknown_str = "unknown";
	const char *fmt;
	const unsigned short *delta;
	unsigned toprint;

	IF_LONG_OPTS(applet_long_options = uname_longopts);
	toprint = getopt32(argv, options);

	if (argv[optind]) { /* coreutils-6.9 compat */
		bb_show_usage();
	}

	if (toprint & (1 << 8)) { /* -a => all opts on */
		toprint = (1 << 8) - 1;
		unknown_str = ""; /* -a does not print unknown fields */
	}

	if (toprint == 0) { /* no opts => -s (sysname) */
		toprint = 1;
	}

	uname(&uname_info.name); /* never fails */

#if defined(__sparc__) && defined(__linux__)
	if (fake_sparc && (fake_sparc[0] | 0x20) == 'y') {
		strcpy(uname_info.name.machine, "sparc");
	}
#endif
	strcpy(uname_info.processor, unknown_str);
	strcpy(uname_info.platform, unknown_str);
	strcpy(uname_info.os, "GNU/Linux");
#if 0
	/* Fedora does something like this */
	strcpy(uname_info.processor, uname_info.name.machine);
	strcpy(uname_info.platform, uname_info.name.machine);
	if (uname_info.platform[0] == 'i'
	 && uname_info.platform[1]
	 && uname_info.platform[2] == '8'
	 && uname_info.platform[3] == '6'
	) {
		uname_info.platform[1] = '3';
	}
#endif

	delta = utsname_offset;
	fmt = " %s" + 1;
	do {
		if (toprint & 1) {
			const char *p = (char *)(&uname_info) + *delta;
			if (p[0]) {
				printf(fmt, p);
				fmt = " %s";
			}
		}
		++delta;
	} while (toprint >>= 1);
	bb_putchar('\n');

	fflush_stdout_and_exit(EXIT_SUCCESS); /* coreutils-6.9 compat */
}
1	niro	532	/* vi: set sw=4 ts=4: */
2			/* uname -- print system information
3			* Copyright (C) 1989-1999 Free Software Foundation, Inc.
4			*
5			* Licensed under GPLv2 or later, see file LICENSE in this tarball for details.
6			*/
7
8			/* BB_AUDIT SUSv3 compliant */
9			/* http://www.opengroup.org/onlinepubs/007904975/utilities/uname.html */
10
11			/* Option Example
12	niro	984	* -s, --sysname SunOS
13			* -n, --nodename rocky8
14			* -r, --release 4.0
15			* -v, --version
16			* -m, --machine sun
17			* -a, --all SunOS rocky8 4.0 sun
18			*
19			* The default behavior is equivalent to '-s'.
20			*
21			* David MacKenzie <djm@gnu.ai.mit.edu>
22			*
23			* GNU coreutils 6.10:
24			* Option: struct Example(s):
25			* utsname
26			* field:
27			* -s, --kernel-name sysname Linux
28			* -n, --nodename nodename localhost.localdomain
29			* -r, --kernel-release release 2.6.29
30			* -v, --kernel-version version #1 SMP Sun Jan 11 20:52:37 EST 2009
31			* -m, --machine machine x86_64 i686
32			* -p, --processor (none) x86_64 i686
33			* -i, --hardware-platform (none) x86_64 i386
34			* NB: vanilla coreutils reports "unknown" -p and -i,
35			* x86_64 and i686/i386 shown above are Fedora's inventions.
36			* -o, --operating-system (none) GNU/Linux
37			* -a, --all: all of the above, in the order shown.
38			* If -p or -i is not known, don't show them
39			*/
40	niro	532
41	niro	984	/* Busyboxed by Erik Andersen
42	niro	532	*
43	niro	984	* Before 2003: Glenn McGrath and Manuel Novoa III
44			* Further size reductions.
45			* Mar 16, 2003: Manuel Novoa III (mjn3@codepoet.org)
46			* Now does proper error checking on i/o. Plus some further space savings.
47			* Jan 2009:
48			* Fix handling of -a to not print "unknown", add -o and -i support.
49	niro	532	*/
50
51	niro	984	#include "libbb.h"
52			/* After libbb.h, since it needs sys/types.h on some systems */
53	niro	532	#include <sys/utsname.h>
54
55			typedef struct {
56			struct utsname name;
57	niro	984	char processor[sizeof(((struct utsname*)NULL)->machine)];
58			char platform[sizeof(((struct utsname*)NULL)->machine)];
59			char os[sizeof("GNU/Linux")];
60	niro	532	} uname_info_t;
61
62	niro	984	static const char options[] ALIGN1 = "snrvmpioa";
63	niro	816	static const unsigned short utsname_offset[] = {
64	niro	984	offsetof(uname_info_t, name.sysname), /* -s */
65			offsetof(uname_info_t, name.nodename), /* -n */
66			offsetof(uname_info_t, name.release), /* -r */
67			offsetof(uname_info_t, name.version), /* -v */
68			offsetof(uname_info_t, name.machine), /* -m */
69			offsetof(uname_info_t, processor), /* -p */
70			offsetof(uname_info_t, platform), /* -i */
71			offsetof(uname_info_t, os), /* -o */
72	niro	532	};
73
74	niro	816	int uname_main(int argc, char **argv) MAIN_EXTERNALLY_VISIBLE;
75			int uname_main(int argc UNUSED_PARAM, char **argv)
76	niro	532	{
77	niro	984	#if ENABLE_LONG_OPTS
78			static const char uname_longopts[] ALIGN1 =
79			/* name, has_arg, val */
80			"all\0" No_argument "a"
81			"kernel-name\0" No_argument "s"
82			"nodename\0" No_argument "n"
83			"kernel-release\0" No_argument "r"
84			"release\0" No_argument "r"
85			"kernel-version\0" No_argument "v"
86			"machine\0" No_argument "m"
87			"processor\0" No_argument "p"
88			"hardware-platform\0" No_argument "i"
89			"operating-system\0" No_argument "o"
90			;
91			#endif
92	niro	532	uname_info_t uname_info;
93			#if defined(__sparc__) && defined(__linux__)
94			char *fake_sparc = getenv("FAKE_SPARC");
95			#endif
96	niro	984	const char *unknown_str = "unknown";
97			const char *fmt;
98	niro	816	const unsigned short *delta;
99	niro	984	unsigned toprint;
100	niro	532
101	niro	984	IF_LONG_OPTS(applet_long_options = uname_longopts);
102	niro	816	toprint = getopt32(argv, options);
103	niro	532
104	niro	816	if (argv[optind]) { /* coreutils-6.9 compat */
105	niro	532	bb_show_usage();
106			}
107
108	niro	984	if (toprint & (1 << 8)) { /* -a => all opts on */
109			toprint = (1 << 8) - 1;
110			unknown_str = ""; /* -a does not print unknown fields */
111	niro	532	}
112
113	niro	816	if (toprint == 0) { /* no opts => -s (sysname) */
114			toprint = 1;
115	niro	532	}
116
117	niro	816	uname(&uname_info.name); /* never fails */
118	niro	532
119			#if defined(__sparc__) && defined(__linux__)
120	niro	816	if (fake_sparc && (fake_sparc[0] \| 0x20) == 'y') {
121	niro	532	strcpy(uname_info.name.machine, "sparc");
122			}
123			#endif
124	niro	984	strcpy(uname_info.processor, unknown_str);
125			strcpy(uname_info.platform, unknown_str);
126			strcpy(uname_info.os, "GNU/Linux");
127			#if 0
128			/* Fedora does something like this */
129			strcpy(uname_info.processor, uname_info.name.machine);
130			strcpy(uname_info.platform, uname_info.name.machine);
131			if (uname_info.platform[0] == 'i'
132			&& uname_info.platform[1]
133			&& uname_info.platform[2] == '8'
134			&& uname_info.platform[3] == '6'
135			) {
136			uname_info.platform[1] = '3';
137			}
138			#endif
139	niro	532
140			delta = utsname_offset;
141	niro	984	fmt = " %s" + 1;
142	niro	532	do {
143			if (toprint & 1) {
144	niro	984	const char p = (char )(&uname_info) + *delta;
145			if (p[0]) {
146			printf(fmt, p);
147			fmt = " %s";
148	niro	532	}
149			}
150			++delta;
151			} while (toprint >>= 1);
152	niro	816	bb_putchar('\n');
153	niro	532
154	niro	816	fflush_stdout_and_exit(EXIT_SUCCESS); /* coreutils-6.9 compat */
155	niro	532	}