diff options
Diffstat (limited to 'src/uname.c')
| -rw-r--r-- | src/uname.c | 379 |
1 files changed, 379 insertions, 0 deletions
diff --git a/src/uname.c b/src/uname.c new file mode 100644 index 0000000..385674f --- /dev/null +++ b/src/uname.c @@ -0,0 +1,379 @@ +/* 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; +} |