along with this program; if not, write to the Free Software Foundation,
Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. */
+/* BB_AUDIT SUSv3 compliant */
+/* http://www.opengroup.org/onlinepubs/007904975/utilities/uname.html */
+
/* Option Example
-s, --sysname SunOS
/* Busyboxed by Erik Andersen */
-#include "busybox.h"
+/* 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 <stdio.h>
+#include <stdlib.h>
+#include <stddef.h>
+#include <string.h>
+#include <unistd.h>
#include <sys/types.h>
#include <sys/utsname.h>
+#include "busybox.h"
-#if defined (HAVE_SYSINFO) && defined (HAVE_SYS_SYSTEMINFO_H)
-# include <sys/systeminfo.h>
-#endif
-
-static void print_element(unsigned int mask, char *element);
-
-/* Values that are bitwise or'd into `toprint'. */
-/* Operating system name. */
-#define PRINT_SYSNAME 1
-
-/* Node name on a communications network. */
-#define PRINT_NODENAME 2
-
-/* Operating system release. */
-#define PRINT_RELEASE 4
-
-/* Operating system version. */
-#define PRINT_VERSION 8
-
-/* Machine hardware name. */
-#define PRINT_MACHINE 16
-
- /* Host processor type. */
-#define PRINT_PROCESSOR 32
-
-/* Mask indicating which elements of the name to print. */
-static unsigned char toprint;
-
+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)
{
- struct utsname name;
- char processor[256];
-
+ 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 = 0;
-
- /* Parse any options */
- //fprintf(stderr, "argc=%d, argv=%s\n", argc, *argv);
- while (--argc > 0 && **(++argv) == '-') {
- while (*(++(*argv))) {
- switch (**argv) {
- case 's':
- toprint |= PRINT_SYSNAME;
- break;
- case 'n':
- toprint |= PRINT_NODENAME;
- break;
- case 'r':
- toprint |= PRINT_RELEASE;
- break;
- case 'v':
- toprint |= PRINT_VERSION;
- break;
- case 'm':
- toprint |= PRINT_MACHINE;
- break;
- case 'p':
- toprint |= PRINT_PROCESSOR;
- break;
- case 'a':
- toprint = (PRINT_SYSNAME | PRINT_NODENAME | PRINT_RELEASE |
- PRINT_PROCESSOR | PRINT_VERSION |
- PRINT_MACHINE);
- break;
- default:
- usage(uname_usage);
- }
- }
- }
+ toprint = bb_getopt_ulflags(argc, argv, options);
- if (toprint == 0)
- toprint = PRINT_SYSNAME;
+ if (argc != optind) {
+ bb_show_usage();
+ }
- if (uname(&name) == -1)
- perror_msg("cannot get system name");
+ if (toprint & (1 << 6)) {
+ toprint = 0x3f;
+ }
-#if defined (HAVE_SYSINFO) && defined (SI_ARCHITECTURE)
- if (sysinfo(SI_ARCHITECTURE, processor, sizeof(processor)) == -1)
- perror_msg("cannot get processor type");
-}
+ if (toprint == 0) {
+ toprint = 1; /* sysname */
+ }
-#else
- strcpy(processor, "unknown");
-#endif
+ 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(name.machine, "sparc");
+ if ((fake_sparc != NULL)
+ && ((fake_sparc[0] == 'y')
+ || (fake_sparc[0] == 'Y'))) {
+ strcpy(uname_info.name.machine, "sparc");
+ }
#endif
- print_element(PRINT_SYSNAME, name.sysname);
- print_element(PRINT_NODENAME, name.nodename);
- print_element(PRINT_RELEASE, name.release);
- print_element(PRINT_VERSION, name.version);
- print_element(PRINT_MACHINE, name.machine);
- print_element(PRINT_PROCESSOR, processor);
-
- return EXIT_SUCCESS;
-}
+ strcpy(uname_info.processor, "unknown");
-/* If the name element set in MASK is selected for printing in `toprint',
- print ELEMENT; then print a space unless it is the last element to
- be printed, in which case print a newline. */
+ delta=utsname_offset;
+ do {
+ if (toprint & 1) {
+ bb_printf(((char *)(&uname_info)) + *delta);
+ if (toprint > 1) {
+ putchar(' ');
+ }
+ }
+ ++delta;
+ } while (toprint >>= 1);
+ putchar('\n');
-static void print_element(unsigned int mask, char *element)
-{
- if (toprint & mask) {
- toprint &= ~mask;
- printf("%s%c", element, toprint ? ' ' : '\n');
- }
+ bb_fflush_stdout_and_exit(EXIT_SUCCESS);
}
projects / oweals / busybox.git / blobdiff