55 lines · c
1// SPDX-License-Identifier: GPL-2.0-only2/*3 * linux/init/version.c4 *5 * Copyright (C) 1992 Theodore Ts'o6 *7 * May be freely distributed as part of Linux.8 */9 10#include <generated/compile.h>11#include <linux/build-salt.h>12#include <linux/elfnote-lto.h>13#include <linux/export.h>14#include <linux/init.h>15#include <linux/printk.h>16#include <linux/uts.h>17#include <linux/utsname.h>18#include <linux/proc_ns.h>19 20static int __init early_hostname(char *arg)21{22 size_t bufsize = sizeof(init_uts_ns.name.nodename);23 size_t maxlen = bufsize - 1;24 ssize_t arglen;25 26 arglen = strscpy(init_uts_ns.name.nodename, arg, bufsize);27 if (arglen < 0) {28 pr_warn("hostname parameter exceeds %zd characters and will be truncated",29 maxlen);30 }31 return 0;32}33early_param("hostname", early_hostname);34 35const char linux_proc_banner[] =36 "%s version %s"37 " (" LINUX_COMPILE_BY "@" LINUX_COMPILE_HOST ")"38 " (" LINUX_COMPILER ") %s\n";39 40BUILD_SALT;41BUILD_LTO_INFO;42 43/*44 * init_uts_ns and linux_banner contain the build version and timestamp,45 * which are really fixed at the very last step of build process.46 * They are compiled with __weak first, and without __weak later.47 */48 49struct uts_namespace init_uts_ns __weak;50const char linux_banner[] __weak;51 52#include "version-timestamp.c"53 54EXPORT_SYMBOL_GPL(init_uts_ns);55