Loading...
1#!/bin/sh
2# SPDX-License-Identifier: GPL-2.0
3#
4# This scripts adds local version information from the version
5# control system git.
6#
7# If something goes wrong, send a mail the kernel build mailinglist
8# (see MAINTAINERS) and CC Nico Schottelius
9# <nico-linuxsetlocalversion -at- schottelius.org>.
10#
11#
12
13set -e
14
15usage() {
16 echo "Usage: $0 [--no-local] [srctree]" >&2
17 exit 1
18}
19
20no_local=false
21if test "$1" = "--no-local"; then
22 no_local=true
23 shift
24fi
25
26srctree=.
27if test $# -gt 0; then
28 srctree=$1
29 shift
30fi
31if test $# -gt 0 -o ! -d "$srctree"; then
32 usage
33fi
34
35try_tag() {
36 tag="$1"
37
38 # Is $tag an annotated tag?
39 if [ "$(git cat-file -t "$tag" 2> /dev/null)" != tag ]; then
40 return
41 fi
42
43 # Is it an ancestor of HEAD, and if so, how many commits are in $tag..HEAD?
44 # shellcheck disable=SC2046 # word splitting is the point here
45 set -- $(git rev-list --count --left-right "$tag"...HEAD 2> /dev/null)
46
47 # $1 is 0 if and only if $tag is an ancestor of HEAD. Use
48 # string comparison, because $1 is empty if the 'git rev-list'
49 # command somehow failed.
50 if [ "$1" != 0 ]; then
51 return
52 fi
53
54 # $2 is the number of commits in the range $tag..HEAD, possibly 0.
55 count="$2"
56}
57
58scm_version()
59{
60 local short=false
61 local no_dirty=false
62 local tag
63
64 while [ $# -gt 0 ];
65 do
66 case "$1" in
67 --short)
68 short=true;;
69 --no-dirty)
70 no_dirty=true;;
71 esac
72 shift
73 done
74
75 cd "$srctree"
76
77 if test -n "$(git rev-parse --show-cdup 2>/dev/null)"; then
78 return
79 fi
80
81 if ! head=$(git rev-parse --verify HEAD 2>/dev/null); then
82 return
83 fi
84
85 # mainline kernel: 6.2.0-rc5 -> v6.2-rc5
86 # stable kernel: 6.1.7 -> v6.1.7
87 version_tag=v$(echo "${KERNELVERSION}" | sed -E 's/^([0-9]+\.[0-9]+)\.0(.*)$/\1\2/')
88
89 # try_tag initializes count if the tag is usable.
90 count=
91
92 # If a localversion* file exists, and the corresponding
93 # annotated tag exists and is an ancestor of HEAD, use
94 # it. This is the case in linux-next.
95 if [ -n "${file_localversion#-}" ] ; then
96 try_tag "${file_localversion#-}"
97 fi
98
99 # Otherwise, if a localversion* file exists, and the tag
100 # obtained by appending it to the tag derived from
101 # KERNELVERSION exists and is an ancestor of HEAD, use
102 # it. This is e.g. the case in linux-rt.
103 if [ -z "${count}" ] && [ -n "${file_localversion}" ]; then
104 try_tag "${version_tag}${file_localversion}"
105 fi
106
107 # Otherwise, default to the annotated tag derived from KERNELVERSION.
108 if [ -z "${count}" ]; then
109 try_tag "${version_tag}"
110 fi
111
112 # If we are at the tagged commit, we ignore it because the
113 # version is well-defined. If none of the attempted tags exist
114 # or were usable, $count is still empty.
115 if [ -z "${count}" ] || [ "${count}" -gt 0 ]; then
116
117 # If only the short version is requested, don't bother
118 # running further git commands
119 if $short; then
120 echo "+"
121 return
122 fi
123
124 # If we are past the tagged commit, we pretty print it.
125 # (like 6.1.0-14595-g292a089d78d3)
126 if [ -n "${count}" ]; then
127 printf "%s%05d" "-" "${count}"
128 fi
129
130 # Add -g and exactly 12 hex chars.
131 printf '%s%.12s' -g "$head"
132 fi
133
134 if ${no_dirty}; then
135 return
136 fi
137
138 # Check for uncommitted changes.
139 # This script must avoid any write attempt to the source tree, which
140 # might be read-only.
141 # You cannot use 'git describe --dirty' because it tries to create
142 # .git/index.lock .
143 # First, with git-status, but --no-optional-locks is only supported in
144 # git >= 2.14, so fall back to git-diff-index if it fails. Note that
145 # git-diff-index does not refresh the index, so it may give misleading
146 # results.
147 # See git-update-index(1), git-diff-index(1), and git-status(1).
148 if {
149 git --no-optional-locks status -uno --porcelain 2>/dev/null ||
150 git diff-index --name-only HEAD
151 } | read dummy; then
152 printf '%s' -dirty
153 fi
154}
155
156collect_files()
157{
158 local file res=
159
160 for file; do
161 case "$file" in
162 *\~*)
163 continue
164 ;;
165 esac
166 if test -e "$file"; then
167 res="$res$(cat "$file")"
168 fi
169 done
170 echo "$res"
171}
172
173if [ -z "${KERNELVERSION}" ]; then
174 echo "KERNELVERSION is not set" >&2
175 exit 1
176fi
177
178# localversion* files in the build and source directory
179file_localversion="$(collect_files localversion*)"
180if test ! "$srctree" -ef .; then
181 file_localversion="${file_localversion}$(collect_files "$srctree"/localversion*)"
182fi
183
184if ${no_local}; then
185 echo "${KERNELVERSION}$(scm_version --no-dirty)"
186 exit 0
187fi
188
189if ! test -e include/config/auto.conf; then
190 echo "Error: kernelrelease not valid - run 'make prepare' to update it" >&2
191 exit 1
192fi
193
194# version string from CONFIG_LOCALVERSION
195config_localversion=$(sed -n 's/^CONFIG_LOCALVERSION=\(.*\)$/\1/p' include/config/auto.conf)
196
197# scm version string if not at the kernel version tag or at the file_localversion
198if grep -q "^CONFIG_LOCALVERSION_AUTO=y$" include/config/auto.conf; then
199 # full scm version string
200 scm_version="$(scm_version)"
201elif [ "${LOCALVERSION+set}" != "set" ]; then
202 # If the variable LOCALVERSION is not set, append a plus
203 # sign if the repository is not in a clean annotated or
204 # signed tagged state (as git describe only looks at signed
205 # or annotated tags - git tag -a/-s).
206 #
207 # If the variable LOCALVERSION is set (including being set
208 # to an empty string), we don't want to append a plus sign.
209 scm_version="$(scm_version --short)"
210fi
211
212echo "${KERNELVERSION}${file_localversion}${config_localversion}${LOCALVERSION}${scm_version}"
1#!/bin/sh
2#
3# This scripts adds local version information from the version
4# control systems git, mercurial (hg) and subversion (svn).
5#
6# If something goes wrong, send a mail the kernel build mailinglist
7# (see MAINTAINERS) and CC Nico Schottelius
8# <nico-linuxsetlocalversion -at- schottelius.org>.
9#
10#
11
12usage() {
13 echo "Usage: $0 [--save-scmversion] [srctree]" >&2
14 exit 1
15}
16
17scm_only=false
18srctree=.
19if test "$1" = "--save-scmversion"; then
20 scm_only=true
21 shift
22fi
23if test $# -gt 0; then
24 srctree=$1
25 shift
26fi
27if test $# -gt 0 -o ! -d "$srctree"; then
28 usage
29fi
30
31scm_version()
32{
33 local short
34 short=false
35
36 cd "$srctree"
37 if test -e .scmversion; then
38 cat .scmversion
39 return
40 fi
41 if test "$1" = "--short"; then
42 short=true
43 fi
44
45 # Check for git and a git repo.
46 if test -z "$(git rev-parse --show-cdup 2>/dev/null)" &&
47 head=`git rev-parse --verify --short HEAD 2>/dev/null`; then
48
49 # If we are at a tagged commit (like "v2.6.30-rc6"), we ignore
50 # it, because this version is defined in the top level Makefile.
51 if [ -z "`git describe --exact-match 2>/dev/null`" ]; then
52
53 # If only the short version is requested, don't bother
54 # running further git commands
55 if $short; then
56 echo "+"
57 return
58 fi
59 # If we are past a tagged commit (like
60 # "v2.6.30-rc5-302-g72357d5"), we pretty print it.
61 if atag="`git describe 2>/dev/null`"; then
62 echo "$atag" | awk -F- '{printf("-%05d-%s", $(NF-1),$(NF))}'
63
64 # If we don't have a tag at all we print -g{commitish}.
65 else
66 printf '%s%s' -g $head
67 fi
68 fi
69
70 # Is this git on svn?
71 if git config --get svn-remote.svn.url >/dev/null; then
72 printf -- '-svn%s' "`git svn find-rev $head`"
73 fi
74
75 # Check for uncommitted changes
76 if git diff-index --name-only HEAD | grep -qv "^scripts/package"; then
77 printf '%s' -dirty
78 fi
79
80 # All done with git
81 return
82 fi
83
84 # Check for mercurial and a mercurial repo.
85 if test -d .hg && hgid=`hg id 2>/dev/null`; then
86 # Do we have an tagged version? If so, latesttagdistance == 1
87 if [ "`hg log -r . --template '{latesttagdistance}'`" == "1" ]; then
88 id=`hg log -r . --template '{latesttag}'`
89 printf '%s%s' -hg "$id"
90 else
91 tag=`printf '%s' "$hgid" | cut -d' ' -f2`
92 if [ -z "$tag" -o "$tag" = tip ]; then
93 id=`printf '%s' "$hgid" | sed 's/[+ ].*//'`
94 printf '%s%s' -hg "$id"
95 fi
96 fi
97
98 # Are there uncommitted changes?
99 # These are represented by + after the changeset id.
100 case "$hgid" in
101 *+|*+\ *) printf '%s' -dirty ;;
102 esac
103
104 # All done with mercurial
105 return
106 fi
107
108 # Check for svn and a svn repo.
109 if rev=`LANG= LC_ALL= LC_MESSAGES=C svn info 2>/dev/null | grep '^Last Changed Rev'`; then
110 rev=`echo $rev | awk '{print $NF}'`
111 printf -- '-svn%s' "$rev"
112
113 # All done with svn
114 return
115 fi
116}
117
118collect_files()
119{
120 local file res
121
122 for file; do
123 case "$file" in
124 *\~*)
125 continue
126 ;;
127 esac
128 if test -e "$file"; then
129 res="$res$(cat "$file")"
130 fi
131 done
132 echo "$res"
133}
134
135if $scm_only; then
136 if test ! -e .scmversion; then
137 res=$(scm_version)
138 echo "$res" >.scmversion
139 fi
140 exit
141fi
142
143if test -e include/config/auto.conf; then
144 . include/config/auto.conf
145else
146 echo "Error: kernelrelease not valid - run 'make prepare' to update it"
147 exit 1
148fi
149
150# localversion* files in the build and source directory
151res="$(collect_files localversion*)"
152if test ! "$srctree" -ef .; then
153 res="$res$(collect_files "$srctree"/localversion*)"
154fi
155
156# CONFIG_LOCALVERSION and LOCALVERSION (if set)
157res="${res}${CONFIG_LOCALVERSION}${LOCALVERSION}"
158
159# scm version string if not at a tagged commit
160if test "$CONFIG_LOCALVERSION_AUTO" = "y"; then
161 # full scm version string
162 res="$res$(scm_version)"
163else
164 # append a plus sign if the repository is not in a clean
165 # annotated or signed tagged state (as git describe only
166 # looks at signed or annotated tags - git tag -a/-s) and
167 # LOCALVERSION= is not specified
168 if test "${LOCALVERSION+set}" != "set"; then
169 scm=$(scm_version --short)
170 res="$res${scm:++}"
171 fi
172fi
173
174echo "$res"