git/t/t1509-root-worktree.sh

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#!/bin/sh
test_description='Test Git when git repository is located at root
This test requires write access in root. Do not bother if you do not
have a throwaway chroot or VM.
Script t1509/prepare-chroot.sh may help you setup chroot, then you
can chroot in and execute this test from there.
'
. ./test-lib.sh
test_cmp_val() {
echo "$1" > expected
echo "$2" > result
test_cmp expected result
}
test_vars() {
test_expect_success "$1: gitdir" '
test_cmp_val "'"$2"'" "$(git rev-parse --git-dir)"
'
test_expect_success "$1: worktree" '
test_cmp_val "'"$3"'" "$(git rev-parse --show-toplevel)"
'
test_expect_success "$1: prefix" '
test_cmp_val "'"$4"'" "$(git rev-parse --show-prefix)"
'
}
test_foobar_root() {
test_expect_success 'add relative' '
test -z "$(cd / && git ls-files)" &&
git add foo/foome &&
git add foo/bar/barme &&
git add me &&
( cd / && git ls-files --stage ) > result &&
test_cmp /ls.expected result &&
rm "$(git rev-parse --git-dir)/index"
'
test_expect_success 'add absolute' '
test -z "$(cd / && git ls-files)" &&
git add /foo/foome &&
git add /foo/bar/barme &&
git add /me &&
( cd / && git ls-files --stage ) > result &&
test_cmp /ls.expected result &&
rm "$(git rev-parse --git-dir)/index"
'
}
test_foobar_foo() {
test_expect_success 'add relative' '
test -z "$(cd / && git ls-files)" &&
git add foome &&
git add bar/barme &&
git add ../me &&
( cd / && git ls-files --stage ) > result &&
test_cmp /ls.expected result &&
rm "$(git rev-parse --git-dir)/index"
'
test_expect_success 'add absolute' '
test -z "$(cd / && git ls-files)" &&
git add /foo/foome &&
git add /foo/bar/barme &&
git add /me &&
( cd / && git ls-files --stage ) > result &&
test_cmp /ls.expected result &&
rm "$(git rev-parse --git-dir)/index"
'
}
test_foobar_foobar() {
test_expect_success 'add relative' '
test -z "$(cd / && git ls-files)" &&
git add ../foome &&
git add barme &&
git add ../../me &&
( cd / && git ls-files --stage ) > result &&
test_cmp /ls.expected result &&
rm "$(git rev-parse --git-dir)/index"
'
test_expect_success 'add absolute' '
test -z "$(cd / && git ls-files)" &&
git add /foo/foome &&
git add /foo/bar/barme &&
git add /me &&
( cd / && git ls-files --stage ) > result &&
test_cmp /ls.expected result &&
rm "$(git rev-parse --git-dir)/index"
'
}
tests: correct misuses of POSIXPERM POSIXPERM requires that a later call to stat(2) (hence "ls -l") faithfully reproduces what an earlier chmod(2) did. Some filesystems cannot satisify this. SANITY requires that a file or a directory is indeed accessible (or inaccessible) when its permission bits would say it ought to be accessible (or inaccessible). Running tests as root would lose this prerequisite for obvious reasons. Fix a few tests that misuse POSIXPERM. t0061-run-command.sh has two uses of POSIXPERM. - One checks that an attempt to execute a file that is marked as unexecutable results in a failure with EACCES; I do not think having root-ness or any other capability that busts the filesystem permission mode bits will make you run an unexecutable file, so this should be left as-is. The test does not have anything to do with SANITY. - The other one expects 'git nitfol' runs the alias when an alias.nitfol is defined and a directory on the PATH is marked as unreadable and unsearchable. I _think_ the test tries to reject the alternative expectation that we want to refuse to run the alias because it would break "no alias may mask a command" rule if a file 'git-nitfol' exists in the unreadable directory but we cannot even determine if that is the case. Under !SANITY that busts the permission bits, this test no longer checks that, so it must be protected with SANITY. t1509-root-worktree.sh expects to be run on a / that is writable by the user and sees if Git behaves "sensibly" when /.git is the repository to govern a worktree that is the whole filesystem, and also if Git behaves "sensibly" when / itself is a bare repository with refs, objects, and friends (I find the definition of "behaves sensibly" under these conditions hard to fathom, but it is a different matter). The implementation of the test is very much problematic. - It requires POSIXPERM, but it does not do chmod or checks modes in any way. - It runs "rm /*" and "rm -fr /refs /objects ..." in one of the tests, and also does "cd / && git init --bare". If done on a live system that takes advantages of the "feature" being tested, these obviously will clobber the system. But there is no guard against such a breakage. - It uses "test $UID = 0" to see rootness, which now should be spelled "! test_have_prereq NOT_ROOT" Signed-off-by: Junio C Hamano <gitster@pobox.com>
2015-01-16 18:32:09 +00:00
if ! test -w /
then
skip_all="Test requiring writable / skipped. Read this test if you want to run it"
test_done
fi
if test -e /refs || test -e /objects || test -e /info || test -e /hooks ||
test -e /.git || test -e /foo || test -e /me
then
skip_all="Skip test that clobbers existing files in /"
test_done
fi
if [ "$IKNOWWHATIAMDOING" != "YES" ]; then
skip_all="You must set env var IKNOWWHATIAMDOING=YES in order to run this test"
test_done
fi
tests: correct misuses of POSIXPERM POSIXPERM requires that a later call to stat(2) (hence "ls -l") faithfully reproduces what an earlier chmod(2) did. Some filesystems cannot satisify this. SANITY requires that a file or a directory is indeed accessible (or inaccessible) when its permission bits would say it ought to be accessible (or inaccessible). Running tests as root would lose this prerequisite for obvious reasons. Fix a few tests that misuse POSIXPERM. t0061-run-command.sh has two uses of POSIXPERM. - One checks that an attempt to execute a file that is marked as unexecutable results in a failure with EACCES; I do not think having root-ness or any other capability that busts the filesystem permission mode bits will make you run an unexecutable file, so this should be left as-is. The test does not have anything to do with SANITY. - The other one expects 'git nitfol' runs the alias when an alias.nitfol is defined and a directory on the PATH is marked as unreadable and unsearchable. I _think_ the test tries to reject the alternative expectation that we want to refuse to run the alias because it would break "no alias may mask a command" rule if a file 'git-nitfol' exists in the unreadable directory but we cannot even determine if that is the case. Under !SANITY that busts the permission bits, this test no longer checks that, so it must be protected with SANITY. t1509-root-worktree.sh expects to be run on a / that is writable by the user and sees if Git behaves "sensibly" when /.git is the repository to govern a worktree that is the whole filesystem, and also if Git behaves "sensibly" when / itself is a bare repository with refs, objects, and friends (I find the definition of "behaves sensibly" under these conditions hard to fathom, but it is a different matter). The implementation of the test is very much problematic. - It requires POSIXPERM, but it does not do chmod or checks modes in any way. - It runs "rm /*" and "rm -fr /refs /objects ..." in one of the tests, and also does "cd / && git init --bare". If done on a live system that takes advantages of the "feature" being tested, these obviously will clobber the system. But there is no guard against such a breakage. - It uses "test $UID = 0" to see rootness, which now should be spelled "! test_have_prereq NOT_ROOT" Signed-off-by: Junio C Hamano <gitster@pobox.com>
2015-01-16 18:32:09 +00:00
if ! test_have_prereq NOT_ROOT
then
skip_all="No you can't run this as root"
test_done
fi
ONE_SHA1=d00491fd7e5bb6fa28c517a0bb32b8b506539d4d
test_expect_success 'setup' '
rm -rf /foo
mkdir /foo &&
mkdir /foo/bar &&
echo 1 > /foo/foome &&
echo 1 > /foo/bar/barme &&
echo 1 > /me
'
say "GIT_DIR absolute, GIT_WORK_TREE set"
test_expect_success 'go to /' 'cd /'
cat >ls.expected <<EOF
100644 $ONE_SHA1 0 foo/bar/barme
100644 $ONE_SHA1 0 foo/foome
100644 $ONE_SHA1 0 me
EOF
GIT_DIR="$TRASH_DIRECTORY/.git" && export GIT_DIR
GIT_WORK_TREE=/ && export GIT_WORK_TREE
test_vars 'abs gitdir, root' "$GIT_DIR" "/" ""
test_foobar_root
test_expect_success 'go to /foo' 'cd /foo'
test_vars 'abs gitdir, foo' "$GIT_DIR" "/" "foo/"
test_foobar_foo
test_expect_success 'go to /foo/bar' 'cd /foo/bar'
test_vars 'abs gitdir, foo/bar' "$GIT_DIR" "/" "foo/bar/"
test_foobar_foobar
say "GIT_DIR relative, GIT_WORK_TREE set"
test_expect_success 'go to /' 'cd /'
GIT_DIR="$(echo $TRASH_DIRECTORY|sed 's,^/,,')/.git" && export GIT_DIR
GIT_WORK_TREE=/ && export GIT_WORK_TREE
test_vars 'rel gitdir, root' "$GIT_DIR" "/" ""
test_foobar_root
test_expect_success 'go to /foo' 'cd /foo'
GIT_DIR="../$TRASH_DIRECTORY/.git" && export GIT_DIR
GIT_WORK_TREE=/ && export GIT_WORK_TREE
test_vars 'rel gitdir, foo' "$TRASH_DIRECTORY/.git" "/" "foo/"
test_foobar_foo
test_expect_success 'go to /foo/bar' 'cd /foo/bar'
GIT_DIR="../../$TRASH_DIRECTORY/.git" && export GIT_DIR
GIT_WORK_TREE=/ && export GIT_WORK_TREE
test_vars 'rel gitdir, foo/bar' "$TRASH_DIRECTORY/.git" "/" "foo/bar/"
test_foobar_foobar
say "GIT_DIR relative, GIT_WORK_TREE relative"
test_expect_success 'go to /' 'cd /'
GIT_DIR="$(echo $TRASH_DIRECTORY|sed 's,^/,,')/.git" && export GIT_DIR
GIT_WORK_TREE=. && export GIT_WORK_TREE
test_vars 'rel gitdir, root' "$GIT_DIR" "/" ""
test_foobar_root
test_expect_success 'go to /' 'cd /foo'
GIT_DIR="../$TRASH_DIRECTORY/.git" && export GIT_DIR
GIT_WORK_TREE=.. && export GIT_WORK_TREE
test_vars 'rel gitdir, foo' "$TRASH_DIRECTORY/.git" "/" "foo/"
test_foobar_foo
test_expect_success 'go to /foo/bar' 'cd /foo/bar'
GIT_DIR="../../$TRASH_DIRECTORY/.git" && export GIT_DIR
GIT_WORK_TREE=../.. && export GIT_WORK_TREE
test_vars 'rel gitdir, foo/bar' "$TRASH_DIRECTORY/.git" "/" "foo/bar/"
test_foobar_foobar
say ".git at root"
unset GIT_DIR
unset GIT_WORK_TREE
test_expect_success 'go to /' 'cd /'
test_expect_success 'setup' '
rm -rf /.git
echo "Initialized empty Git repository in /.git/" > expected &&
git init > result &&
test_cmp expected result
'
test_vars 'auto gitdir, root' ".git" "/" ""
test_foobar_root
test_expect_success 'go to /foo' 'cd /foo'
test_vars 'auto gitdir, foo' "/.git" "/" "foo/"
test_foobar_foo
test_expect_success 'go to /foo/bar' 'cd /foo/bar'
test_vars 'auto gitdir, foo/bar' "/.git" "/" "foo/bar/"
test_foobar_foobar
test_expect_success 'cleanup' 'rm -rf /.git'
say "auto bare gitdir"
# DESTROYYYYY!!!!!
test_expect_success 'setup' '
rm -rf /refs /objects /info /hooks
rm /*
cd / &&
echo "Initialized empty Git repository in /" > expected &&
git init --bare > result &&
test_cmp expected result
'
test_vars 'auto gitdir, root' "." "" ""
test_expect_success 'go to /foo' 'cd /foo'
test_vars 'auto gitdir, root' "/" "" ""
test_done