cd /usr/src/linux/
nano init/version.c
---------------------------------------------------------------------------------------------------------------
#include <generated/compile.h>
#include <linux/build-salt.h>
#include <linux/elfnote-lto.h>
#include <linux/export.h>
#include <linux/uts.h>
#include <linux/utsname.h>
#include <generated/utsrelease.h>
#include <linux/version.h>
#include <linux/proc_ns.h>
struct uts_namespace init_uts_ns = {
.ns.count = REFCOUNT_INIT(2),
.name = {
.sysname = UTS_SYSNAME, /* Operating system name (e.g., "Linux") */
.nodename = UTS_NODENAME, /* Name within communications network to which the node is attached, if any */
.release = UTS_RELEASE, /* Operating system releas (e.g., "2.6.28") */
.version = UTS_VERSION, /* Operating system version */
.machine = UTS_MACHINE, /* Hardware type identifier */
.domainname = UTS_DOMAINNAME, /* NIS or YP domain name */
},
.user_ns = &init_user_ns,
.ns.inum = PROC_UTS_INIT_INO,
#ifdef CONFIG_UTS_NS
.ns.ops = &utsns_operations,
#endif
};
EXPORT_SYMBOL_GPL(init_uts_ns);
/* FIXED STRINGS! Don't touch! */
const char linux_banner[] =
"Linux version " UTS_RELEASE " (" LINUX_COMPILE_BY "@"
LINUX_COMPILE_HOST ") (" LINUX_COMPILER ") " UTS_VERSION "\n";
const char linux_proc_banner[] =
"%s version %s"
" (" LINUX_COMPILE_BY "@" LINUX_COMPILE_HOST ")"
" (" LINUX_COMPILER ") %s\n";
BUILD_SALT;
BUILD_LTO_INFO;
--------------------------------------------------------------------------------------------------------------------------------------
nano include/generated/compile.h
--------------------------------------------------------------------------------------------------------------------------------------
/* This file is auto generated, version 3 */
/* SMP */
#define UTS_MACHINE "x86_64"
#define UTS_VERSION "#3 SMP Wed Jan 18 06:19:25 +0545 2023"
#define LINUX_COMPILE_BY "root"
#define LINUX_COMPILE_HOST "me"
#define LINUX_COMPILER "gcc (Gentoo Hardened 11.3.1_p20221209 p3) 11.3.1 20221209, GNU ld (Gentoo 2.39 p5) 2.39.0"
--------------------------------------------------------------------------------------------------------------------------------------
nano include/generated/utsrelease.h
--------------------------------------------------------------------------------------------------------------------------------------
#define UTS_RELEASE "5.15.80-gentoo"
--------------------------------------------------------------------------------------------------------------------------------------
nano include/linux/uts.h
--------------------------------------------------------------------------------------------------------------------------------------
/* SPDX-License-Identifier: GPL-2.0 */
#ifndef _LINUX_UTS_H
#define _LINUX_UTS_H
/*
* Defines for what uname() should return
*/
#ifndef UTS_SYSNAME
#define UTS_SYSNAME "Linux"
#endif
#ifndef UTS_NODENAME
#define UTS_NODENAME CONFIG_DEFAULT_HOSTNAME /* set by sethostname() */
#endif
#ifndef UTS_DOMAINNAME
#define UTS_DOMAINNAME "(none)" /* set by setdomainname() */
#endif
#endif
--------------------------------------------------------------------------------------------------------------------------------------
nano scripts/setlocalversion
--------------------------------------------------------------------------------------------------------------------------------------
#!/bin/sh
# SPDX-License-Identifier: GPL-2.0
#
# This scripts adds local version information from the version
# control systems git, mercurial (hg) and subversion (svn).
#
# If something goes wrong, send a mail the kernel build mailinglist
# (see MAINTAINERS) and CC Nico Schottelius
# <nico-linuxsetlocalversion -at- schottelius.org>.
#
#
usage() {
echo "Usage: $0 [--save-scmversion] [srctree]" >&2
exit 1
}
scm_only=false
srctree=.
if test "$1" = "--save-scmversion"; then
scm_only=true
shift
fi
if test $# -gt 0; then
srctree=$1
shift
fi
if test $# -gt 0 -o ! -d "$srctree"; then
usage
fi
scm_version()
{
local short
short=false
cd "$srctree"
if test -e .scmversion; then
cat .scmversion
return
fi
if test "$1" = "--short"; then
short=true
fi
# Check for git and a git repo.
if test -z "$(git rev-parse --show-cdup 2>/dev/null)" &&
head=$(git rev-parse --verify HEAD 2>/dev/null); then
# If we are at a tagged commit (like "v2.6.30-rc6"), we ignore
# it, because this version is defined in the top level Makefile.
if [ -z "$(git describe --exact-match 2>/dev/null)" ]; then
# If only the short version is requested, don't bother
# running further git commands
if $short; then
echo "+"
return
fi
# If we are past a tagged commit (like
# "v2.6.30-rc5-302-g72357d5"), we pretty print it.
if atag="$(git describe 2>/dev/null)"; then
echo "$atag" | awk -F- '{printf("-%05d", $(NF-1))}'
fi
# Add -g and exactly 12 hex chars.
printf '%s%s' -g "$(echo $head | cut -c1-12)"
fi
# Check for uncommitted changes.
# This script must avoid any write attempt to the source tree,
# which might be read-only.
# You cannot use 'git describe --dirty' because it tries to
# create .git/index.lock .
# First, with git-status, but --no-optional-locks is only
# supported in git >= 2.14, so fall back to git-diff-index if
# it fails. Note that git-diff-index does not refresh the
# index, so it may give misleading results. See
# git-update-index(1), git-diff-index(1), and git-status(1).
if {
git --no-optional-locks status -uno --porcelain 2>/dev/null ||
git diff-index --name-only HEAD
} | read dummy; then
printf '%s' -dirty
fi
fi
}
collect_files()
{
local file res=
for file; do
case "$file" in
*\~*)
continue
;;
esac
if test -e "$file"; then
res="$res$(cat "$file")"
fi
done
echo "$res"
}
if $scm_only; then
if test ! -e .scmversion; then
res=$(scm_version)
echo "$res" >.scmversion
fi
exit
fi
if test -e include/config/auto.conf; then
. include/config/auto.conf
else
echo "Error: kernelrelease not valid - run 'make prepare' to update it" >&2
exit 1
fi
# localversion* files in the build and source directory
res="$(collect_files localversion*)"
if test ! "$srctree" -ef .; then
res="$res$(collect_files "$srctree"/localversion*)"
fi
# CONFIG_LOCALVERSION and LOCALVERSION (if set)
res="${res}${CONFIG_LOCALVERSION}${LOCALVERSION}"
# scm version string if not at a tagged commit
if test "$CONFIG_LOCALVERSION_AUTO" = "y"; then
# full scm version string
res="$res$(scm_version)"
elif [ "${LOCALVERSION+set}" != "set" ]; then
# If the variable LOCALVERSION is not set, append a plus
# sign if the repository is not in a clean annotated or
# signed tagged state (as git describe only looks at signed
# or annotated tags - git tag -a/-s).
#
# If the variable LOCALVERSION is set (including being set
# to an empty string), we don't want to append a plus sign.
scm=$(scm_version --short)
res="$res${scm:++}"
fi
echo "$res"
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/proc/sys/kernel/{ostype,hostname,osrelease,version, domainname}
--------------------------------------------------------------------------------------------------------------------------------------
nano Makefile
VERSION = 5
PATCHLEVEL = 15
SUBLEVEL = 80
EXTRAVERSION = -gentoo
NAME = Trick or Treat
--------------------------------------------------------------------------------------------------------------------------------------
src
man 2 uname
https://unix.stackexchange.com/questions/136959/where-does-uname-get-its-information-from
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