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-rw-r--r--src/uname.c379
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diff --git a/src/uname.c b/src/uname.c
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+++ b/src/uname.c
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+/* uname -- print system information
+
+ Copyright (C) 1989-2022 Free Software Foundation, Inc.
+
+ This program is free software: you can redistribute it and/or modify
+ it under the terms of the GNU General Public License as published by
+ the Free Software Foundation, either version 3 of the License, or
+ (at your option) any later version.
+
+ This program is distributed in the hope that it will be useful,
+ but WITHOUT ANY WARRANTY; without even the implied warranty of
+ MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ GNU General Public License for more details.
+
+ You should have received a copy of the GNU General Public License
+ along with this program. If not, see <https://www.gnu.org/licenses/>. */
+
+/* Written by David MacKenzie <djm@gnu.ai.mit.edu> */
+
+#include <config.h>
+#include <stdio.h>
+#include <sys/types.h>
+#include <sys/utsname.h>
+#include <getopt.h>
+
+#if HAVE_SYSINFO && HAVE_SYS_SYSTEMINFO_H
+# include <sys/systeminfo.h>
+#endif
+
+#if HAVE_SYS_SYSCTL_H && ! defined __GLIBC__ && ! defined __APPLE__
+# if HAVE_SYS_PARAM_H
+# include <sys/param.h> /* needed for OpenBSD 3.0 */
+# endif
+# include <sys/sysctl.h>
+# ifdef HW_MODEL
+# ifdef HW_MACHINE_ARCH
+/* E.g., FreeBSD 4.5, NetBSD 1.5.2 */
+# define UNAME_HARDWARE_PLATFORM HW_MODEL
+# define UNAME_PROCESSOR HW_MACHINE_ARCH
+# else
+/* E.g., OpenBSD 3.0 */
+# define UNAME_PROCESSOR HW_MODEL
+# endif
+# endif
+#endif
+
+#include "system.h"
+#include "die.h"
+#include "error.h"
+#include "quote.h"
+#include "uname.h"
+
+/* The official name of this program (e.g., no 'g' prefix). */
+#define PROGRAM_NAME (uname_mode == UNAME_UNAME ? "uname" : "arch")
+
+#define AUTHORS proper_name ("David MacKenzie")
+#define ARCH_AUTHORS "David MacKenzie", "Karel Zak"
+
+/* Values that are bitwise or'd into 'toprint'. */
+/* Kernel name. */
+#define PRINT_KERNEL_NAME 1
+
+/* Node name on a communications network. */
+#define PRINT_NODENAME 2
+
+/* Kernel release. */
+#define PRINT_KERNEL_RELEASE 4
+
+/* Kernel version. */
+#define PRINT_KERNEL_VERSION 8
+
+/* Machine hardware name. */
+#define PRINT_MACHINE 16
+
+/* Processor type. */
+#define PRINT_PROCESSOR 32
+
+/* Hardware platform. */
+#define PRINT_HARDWARE_PLATFORM 64
+
+/* Operating system. */
+#define PRINT_OPERATING_SYSTEM 128
+
+static struct option const uname_long_options[] =
+{
+ {"all", no_argument, NULL, 'a'},
+ {"kernel-name", no_argument, NULL, 's'},
+ {"sysname", no_argument, NULL, 's'}, /* Obsolescent. */
+ {"nodename", no_argument, NULL, 'n'},
+ {"kernel-release", no_argument, NULL, 'r'},
+ {"release", no_argument, NULL, 'r'}, /* Obsolescent. */
+ {"kernel-version", no_argument, NULL, 'v'},
+ {"machine", no_argument, NULL, 'm'},
+ {"processor", no_argument, NULL, 'p'},
+ {"hardware-platform", no_argument, NULL, 'i'},
+ {"operating-system", no_argument, NULL, 'o'},
+ {GETOPT_HELP_OPTION_DECL},
+ {GETOPT_VERSION_OPTION_DECL},
+ {NULL, 0, NULL, 0}
+};
+
+static struct option const arch_long_options[] =
+{
+ {GETOPT_HELP_OPTION_DECL},
+ {GETOPT_VERSION_OPTION_DECL},
+ {NULL, 0, NULL, 0}
+};
+
+void
+usage (int status)
+{
+ if (status != EXIT_SUCCESS)
+ emit_try_help ();
+ else
+ {
+ printf (_("Usage: %s [OPTION]...\n"), program_name);
+
+ if (uname_mode == UNAME_UNAME)
+ {
+ fputs (_("\
+Print certain system information. With no OPTION, same as -s.\n\
+\n\
+ -a, --all print all information, in the following order,\n\
+ except omit -p and -i if unknown:\n\
+ -s, --kernel-name print the kernel name\n\
+ -n, --nodename print the network node hostname\n\
+ -r, --kernel-release print the kernel release\n\
+"), stdout);
+ fputs (_("\
+ -v, --kernel-version print the kernel version\n\
+ -m, --machine print the machine hardware name\n\
+ -p, --processor print the processor type (non-portable)\n\
+ -i, --hardware-platform print the hardware platform (non-portable)\n\
+ -o, --operating-system print the operating system\n\
+"), stdout);
+ }
+ else
+ {
+ fputs (_("\
+Print machine architecture.\n\
+\n\
+"), stdout);
+ }
+
+ fputs (HELP_OPTION_DESCRIPTION, stdout);
+ fputs (VERSION_OPTION_DESCRIPTION, stdout);
+ emit_ancillary_info (PROGRAM_NAME);
+ }
+ exit (status);
+}
+
+/* Print ELEMENT, preceded by a space if something has already been
+ printed. */
+
+static void
+print_element (char const *element)
+{
+ static bool printed;
+ if (printed)
+ putchar (' ');
+ printed = true;
+ fputs (element, stdout);
+}
+
+/* Print ELEMENT, preceded by a space if something has already been
+ printed. But if the environment variable ENVVAR is set, print its
+ value instead of ELEMENT. */
+
+static void
+print_element_env (char const *element, MAYBE_UNUSED char const *envvar)
+{
+#ifdef __APPLE__
+ if (envvar)
+ {
+ char const *val = getenv (envvar);
+ if (val)
+ element = val;
+ }
+#endif
+ print_element (element);
+}
+
+
+/* Set all the option flags according to the switches specified.
+ Return the mask indicating which elements to print. */
+
+static int
+decode_switches (int argc, char **argv)
+{
+ int c;
+ unsigned int toprint = 0;
+
+ if (uname_mode == UNAME_ARCH)
+ {
+ while ((c = getopt_long (argc, argv, "",
+ arch_long_options, NULL)) != -1)
+ {
+ switch (c)
+ {
+ case_GETOPT_HELP_CHAR;
+
+ case_GETOPT_VERSION_CHAR (PROGRAM_NAME, ARCH_AUTHORS);
+
+ default:
+ usage (EXIT_FAILURE);
+ }
+ }
+ toprint = PRINT_MACHINE;
+ }
+ else
+ {
+ while ((c = getopt_long (argc, argv, "asnrvmpio",
+ uname_long_options, NULL)) != -1)
+ {
+ switch (c)
+ {
+ case 'a':
+ toprint = UINT_MAX;
+ break;
+
+ case 's':
+ toprint |= PRINT_KERNEL_NAME;
+ break;
+
+ case 'n':
+ toprint |= PRINT_NODENAME;
+ break;
+
+ case 'r':
+ toprint |= PRINT_KERNEL_RELEASE;
+ break;
+
+ case 'v':
+ toprint |= PRINT_KERNEL_VERSION;
+ break;
+
+ case 'm':
+ toprint |= PRINT_MACHINE;
+ break;
+
+ case 'p':
+ toprint |= PRINT_PROCESSOR;
+ break;
+
+ case 'i':
+ toprint |= PRINT_HARDWARE_PLATFORM;
+ break;
+
+ case 'o':
+ toprint |= PRINT_OPERATING_SYSTEM;
+ break;
+
+ case_GETOPT_HELP_CHAR;
+
+ case_GETOPT_VERSION_CHAR (PROGRAM_NAME, AUTHORS);
+
+ default:
+ usage (EXIT_FAILURE);
+ }
+ }
+ }
+
+ if (argc != optind)
+ {
+ error (0, 0, _("extra operand %s"), quote (argv[optind]));
+ usage (EXIT_FAILURE);
+ }
+
+ return toprint;
+}
+
+int
+main (int argc, char **argv)
+{
+ static char const unknown[] = "unknown";
+
+ /* Mask indicating which elements to print. */
+ unsigned int toprint = 0;
+
+ initialize_main (&argc, &argv);
+ set_program_name (argv[0]);
+ setlocale (LC_ALL, "");
+ bindtextdomain (PACKAGE, LOCALEDIR);
+ textdomain (PACKAGE);
+
+ atexit (close_stdout);
+
+ toprint = decode_switches (argc, argv);
+
+ if (toprint == 0)
+ toprint = PRINT_KERNEL_NAME;
+
+ if (toprint
+ & (PRINT_KERNEL_NAME | PRINT_NODENAME | PRINT_KERNEL_RELEASE
+ | PRINT_KERNEL_VERSION | PRINT_MACHINE))
+ {
+ struct utsname name;
+
+ if (uname (&name) == -1)
+ die (EXIT_FAILURE, errno, _("cannot get system name"));
+
+ if (toprint & PRINT_KERNEL_NAME)
+ print_element_env (name.sysname, "UNAME_SYSNAME");
+ if (toprint & PRINT_NODENAME)
+ print_element_env (name.nodename, "UNAME_NODENAME");
+ if (toprint & PRINT_KERNEL_RELEASE)
+ print_element_env (name.release, "UNAME_RELEASE");
+ if (toprint & PRINT_KERNEL_VERSION)
+ print_element_env (name.version, "UNAME_VERSION");
+ if (toprint & PRINT_MACHINE)
+ print_element_env (name.machine, "UNAME_MACHINE");
+ }
+
+ if (toprint & PRINT_PROCESSOR)
+ {
+ char const *element = unknown;
+#ifdef __APPLE__
+# if defined __arm__ || defined __arm64__
+ element = "arm";
+# elif defined __i386__ || defined __x86_64__
+ element = "i386";
+# elif defined __ppc__ || defined __ppc64__
+ element = "powerpc";
+# endif
+#endif
+#if HAVE_SYSINFO && defined SI_ARCHITECTURE
+ if (element == unknown)
+ {
+ static char processor[257];
+ if (0 <= sysinfo (SI_ARCHITECTURE, processor, sizeof processor))
+ element = processor;
+ }
+#endif
+#ifdef UNAME_PROCESSOR
+ if (element == unknown)
+ {
+ static char processor[257];
+ size_t s = sizeof processor;
+ static int mib[] = { CTL_HW, UNAME_PROCESSOR };
+ if (sysctl (mib, 2, processor, &s, 0, 0) >= 0)
+ element = processor;
+ }
+#endif
+ if (! (toprint == UINT_MAX && element == unknown))
+ print_element (element);
+ }
+
+ if (toprint & PRINT_HARDWARE_PLATFORM)
+ {
+ char const *element = unknown;
+#if HAVE_SYSINFO && defined SI_PLATFORM
+ {
+ static char hardware_platform[257];
+ if (0 <= sysinfo (SI_PLATFORM,
+ hardware_platform, sizeof hardware_platform))
+ element = hardware_platform;
+ }
+#endif
+#ifdef UNAME_HARDWARE_PLATFORM
+ if (element == unknown)
+ {
+ static char hardware_platform[257];
+ size_t s = sizeof hardware_platform;
+ static int mib[] = { CTL_HW, UNAME_HARDWARE_PLATFORM };
+ if (sysctl (mib, 2, hardware_platform, &s, 0, 0) >= 0)
+ element = hardware_platform;
+ }
+#endif
+ if (! (toprint == UINT_MAX && element == unknown))
+ print_element (element);
+ }
+
+ if (toprint & PRINT_OPERATING_SYSTEM)
+ print_element (HOST_OPERATING_SYSTEM);
+
+ putchar ('\n');
+
+ return EXIT_SUCCESS;
+}