* [PATCH] test-lib: set GIT_CEILING_DIRECTORIES to protect the surrounding repository
@ 2021-08-28 12:13 SZEDER Gábor
2021-08-28 19:56 ` Carlo Arenas
2021-08-29 9:25 ` [PATCH v2] " SZEDER Gábor
0 siblings, 2 replies; 6+ messages in thread
From: SZEDER Gábor @ 2021-08-28 12:13 UTC (permalink / raw)
To: git; +Cc: SZEDER Gábor
Every once in a while a test somehow manages to escape from its trash
directory and modifies the surrounding repository, whether because of
a bug in git itself, a bug in a test [1], or e.g. when trying to run
tests with a shell that is, in general, unable to run our tests [2].
Set GIT_CEILING_DIRECTORIES="$GIT_BUILD_DIR" as an additional safety
measure to protect the surrounding repository at least from
modifications by git commands executed in the tests (though it won't
save us from regular shell commands, e.g. 'cd .. && rm -f ...').
[1] e.g. https://public-inbox.org/git/20210423051255.GD2947267@szeder.dev
[2] $ git symbolic-ref HEAD
refs/heads/master
$ ksh ./t2011-checkout-invalid-head.sh
[... a lot of "not ok" ...]
$ git symbolic-ref HEAD
refs/heads/other
(In short: 'ksh' doesn't support the 'local' builtin command,
which is used by 'test_oid', causing it to return with error
whenever called, leaving ZERO_OID set to empty, so when 'checkout
main from invalid HEAD' runs 'echo $ZERO_OID >.git/HEAD' writes a
corrupt (not invalid) HEAD, and subsequent git commands don't
recognize the repository in the trash directory anymore, but
operate on the surrounding repo.)
Signed-off-by: SZEDER Gábor <szeder.dev@gmail.com>
---
t/test-lib.sh | 3 ++-
1 file changed, 2 insertions(+), 1 deletion(-)
diff --git a/t/test-lib.sh b/t/test-lib.sh
index abcfbed6d6..a1e0182c2f 100644
--- a/t/test-lib.sh
+++ b/t/test-lib.sh
@@ -1343,7 +1343,8 @@ fi
GIT_TEMPLATE_DIR="$GIT_BUILD_DIR"/templates/blt
GIT_CONFIG_NOSYSTEM=1
GIT_ATTR_NOSYSTEM=1
-export PATH GIT_EXEC_PATH GIT_TEMPLATE_DIR GIT_CONFIG_NOSYSTEM GIT_ATTR_NOSYSTEM
+GIT_CEILING_DIRECTORIES="$GIT_BUILD_DIR"
+export PATH GIT_EXEC_PATH GIT_TEMPLATE_DIR GIT_CONFIG_NOSYSTEM GIT_ATTR_NOSYSTEM GIT_CEILING_DIRECTORIES
if test -z "$GIT_TEST_CMP"
then
--
2.33.0.358.g803110d36e
^ permalink raw reply related [flat|nested] 6+ messages in thread
* Re: [PATCH] test-lib: set GIT_CEILING_DIRECTORIES to protect the surrounding repository
2021-08-28 12:13 [PATCH] test-lib: set GIT_CEILING_DIRECTORIES to protect the surrounding repository SZEDER Gábor
@ 2021-08-28 19:56 ` Carlo Arenas
2021-08-29 9:15 ` SZEDER Gábor
2021-08-29 9:25 ` [PATCH v2] " SZEDER Gábor
1 sibling, 1 reply; 6+ messages in thread
From: Carlo Arenas @ 2021-08-28 19:56 UTC (permalink / raw)
To: SZEDER Gábor; +Cc: git
On Sat, Aug 28, 2021 at 5:15 AM SZEDER Gábor <szeder.dev@gmail.com> wrote:
> diff --git a/t/test-lib.sh b/t/test-lib.sh
> index abcfbed6d6..a1e0182c2f 100644
> --- a/t/test-lib.sh
> +++ b/t/test-lib.sh
> @@ -1343,7 +1343,8 @@ fi
> GIT_TEMPLATE_DIR="$GIT_BUILD_DIR"/templates/blt
> GIT_CONFIG_NOSYSTEM=1
> GIT_ATTR_NOSYSTEM=1
> -export PATH GIT_EXEC_PATH GIT_TEMPLATE_DIR GIT_CONFIG_NOSYSTEM GIT_ATTR_NOSYSTEM
> +GIT_CEILING_DIRECTORIES="$GIT_BUILD_DIR"
this wouldn't work as expected with --root and would be IMHO safer
anyway if using instead
GIT_CEILING_DIRECTORIES="$TRASH_DIRECTORY/.."
Carlo
^ permalink raw reply [flat|nested] 6+ messages in thread
* Re: [PATCH] test-lib: set GIT_CEILING_DIRECTORIES to protect the surrounding repository
2021-08-28 19:56 ` Carlo Arenas
@ 2021-08-29 9:15 ` SZEDER Gábor
0 siblings, 0 replies; 6+ messages in thread
From: SZEDER Gábor @ 2021-08-29 9:15 UTC (permalink / raw)
To: Carlo Arenas; +Cc: git
On Sat, Aug 28, 2021 at 12:56:24PM -0700, Carlo Arenas wrote:
> On Sat, Aug 28, 2021 at 5:15 AM SZEDER Gábor <szeder.dev@gmail.com> wrote:
> > diff --git a/t/test-lib.sh b/t/test-lib.sh
> > index abcfbed6d6..a1e0182c2f 100644
> > --- a/t/test-lib.sh
> > +++ b/t/test-lib.sh
> > @@ -1343,7 +1343,8 @@ fi
> > GIT_TEMPLATE_DIR="$GIT_BUILD_DIR"/templates/blt
> > GIT_CONFIG_NOSYSTEM=1
> > GIT_ATTR_NOSYSTEM=1
> > -export PATH GIT_EXEC_PATH GIT_TEMPLATE_DIR GIT_CONFIG_NOSYSTEM GIT_ATTR_NOSYSTEM
> > +GIT_CEILING_DIRECTORIES="$GIT_BUILD_DIR"
>
> this wouldn't work as expected with --root and would be IMHO safer
> anyway if using instead
>
> GIT_CEILING_DIRECTORIES="$TRASH_DIRECTORY/.."
Thanks, I completely forgot about '--root'.
^ permalink raw reply [flat|nested] 6+ messages in thread
* [PATCH v2] test-lib: set GIT_CEILING_DIRECTORIES to protect the surrounding repository
2021-08-28 12:13 [PATCH] test-lib: set GIT_CEILING_DIRECTORIES to protect the surrounding repository SZEDER Gábor
2021-08-28 19:56 ` Carlo Arenas
@ 2021-08-29 9:25 ` SZEDER Gábor
2021-08-31 14:40 ` Ævar Arnfjörð Bjarmason
1 sibling, 1 reply; 6+ messages in thread
From: SZEDER Gábor @ 2021-08-29 9:25 UTC (permalink / raw)
To: git; +Cc: Carlo Arenas, SZEDER Gábor
Every once in a while a test somehow manages to escape from its trash
directory and modifies the surrounding repository, whether because of
a bug in git itself, a bug in a test [1], or e.g. when trying to run
tests with a shell that is, in general, unable to run our tests [2].
Set GIT_CEILING_DIRECTORIES="$TRASH_DIRECTORY/.." as an additional
safety measure to protect the surrounding repository at least from
modifications by git commands executed in the tests (assuming that
handling of ceiling directories during repository discovery is not
broken, and, of course, it won't save us from regular shell commands,
e.g. 'cd .. && rm -f ...').
[1] e.g. https://public-inbox.org/git/20210423051255.GD2947267@szeder.dev
[2] $ git symbolic-ref HEAD
refs/heads/master
$ ksh ./t2011-checkout-invalid-head.sh
[... a lot of "not ok" ...]
$ git symbolic-ref HEAD
refs/heads/other
(In short: 'ksh' doesn't support the 'local' builtin command,
which is used by 'test_oid', causing it to return with error
whenever it's called, leaving ZERO_OID set to empty, so when the
test 'checkout main from invalid HEAD' runs 'echo $ZERO_OID
>.git/HEAD' it writes a corrupt (not invalid) HEAD, and subsequent
git commands don't recognize the repository in the trash directory
anymore, but operate on the surrounding repo.)
Signed-off-by: SZEDER Gábor <szeder.dev@gmail.com>
---
Changes since v1:
- Set "$TRASH_DIRECTORY/.." instead of $GIT_BUILD_DIR.
- Minor commit message tweaks.
t/test-lib.sh | 3 ++-
1 file changed, 2 insertions(+), 1 deletion(-)
diff --git a/t/test-lib.sh b/t/test-lib.sh
index abcfbed6d6..fc1e521519 100644
--- a/t/test-lib.sh
+++ b/t/test-lib.sh
@@ -1343,7 +1343,8 @@ fi
GIT_TEMPLATE_DIR="$GIT_BUILD_DIR"/templates/blt
GIT_CONFIG_NOSYSTEM=1
GIT_ATTR_NOSYSTEM=1
-export PATH GIT_EXEC_PATH GIT_TEMPLATE_DIR GIT_CONFIG_NOSYSTEM GIT_ATTR_NOSYSTEM
+GIT_CEILING_DIRECTORIES="$TRASH_DIRECTORY/.."
+export PATH GIT_EXEC_PATH GIT_TEMPLATE_DIR GIT_CONFIG_NOSYSTEM GIT_ATTR_NOSYSTEM GIT_CEILING_DIRECTORIES
if test -z "$GIT_TEST_CMP"
then
--
2.33.0.361.g6f8e582daa
^ permalink raw reply related [flat|nested] 6+ messages in thread
* Re: [PATCH v2] test-lib: set GIT_CEILING_DIRECTORIES to protect the surrounding repository
2021-08-29 9:25 ` [PATCH v2] " SZEDER Gábor
@ 2021-08-31 14:40 ` Ævar Arnfjörð Bjarmason
2021-09-01 4:58 ` SZEDER Gábor
0 siblings, 1 reply; 6+ messages in thread
From: Ævar Arnfjörð Bjarmason @ 2021-08-31 14:40 UTC (permalink / raw)
To: SZEDER Gábor; +Cc: git, Carlo Arenas
On Sun, Aug 29 2021, SZEDER Gábor wrote:
> Every once in a while a test somehow manages to escape from its trash
> directory and modifies the surrounding repository, whether because of
> a bug in git itself, a bug in a test [1], or e.g. when trying to run
> tests with a shell that is, in general, unable to run our tests [2].
>
> Set GIT_CEILING_DIRECTORIES="$TRASH_DIRECTORY/.." as an additional
> safety measure to protect the surrounding repository at least from
> modifications by git commands executed in the tests (assuming that
> handling of ceiling directories during repository discovery is not
> broken, and, of course, it won't save us from regular shell commands,
> e.g. 'cd .. && rm -f ...').
>
> [1] e.g. https://public-inbox.org/git/20210423051255.GD2947267@szeder.dev
> [2] $ git symbolic-ref HEAD
> refs/heads/master
> $ ksh ./t2011-checkout-invalid-head.sh
> [... a lot of "not ok" ...]
> $ git symbolic-ref HEAD
> refs/heads/other
>
> (In short: 'ksh' doesn't support the 'local' builtin command,
> which is used by 'test_oid', causing it to return with error
> whenever it's called, leaving ZERO_OID set to empty, so when the
> test 'checkout main from invalid HEAD' runs 'echo $ZERO_OID
> >.git/HEAD' it writes a corrupt (not invalid) HEAD, and subsequent
> git commands don't recognize the repository in the trash directory
> anymore, but operate on the surrounding repo.)
>
> Signed-off-by: SZEDER Gábor <szeder.dev@gmail.com>
> ---
> Changes since v1:
> - Set "$TRASH_DIRECTORY/.." instead of $GIT_BUILD_DIR.
> - Minor commit message tweaks.
>
> t/test-lib.sh | 3 ++-
> 1 file changed, 2 insertions(+), 1 deletion(-)
>
> diff --git a/t/test-lib.sh b/t/test-lib.sh
> index abcfbed6d6..fc1e521519 100644
> --- a/t/test-lib.sh
> +++ b/t/test-lib.sh
> @@ -1343,7 +1343,8 @@ fi
> GIT_TEMPLATE_DIR="$GIT_BUILD_DIR"/templates/blt
> GIT_CONFIG_NOSYSTEM=1
> GIT_ATTR_NOSYSTEM=1
> -export PATH GIT_EXEC_PATH GIT_TEMPLATE_DIR GIT_CONFIG_NOSYSTEM GIT_ATTR_NOSYSTEM
> +GIT_CEILING_DIRECTORIES="$TRASH_DIRECTORY/.."
> +export PATH GIT_EXEC_PATH GIT_TEMPLATE_DIR GIT_CONFIG_NOSYSTEM GIT_ATTR_NOSYSTEM GIT_CEILING_DIRECTORIES
>
> if test -z "$GIT_TEST_CMP"
> then
For what it's worth I'm very happy with this, and have been running this
in my own daily build of git, I've occasionally ran into e.g. needing to
manually clean up my own git.git's config file because some test escaped
its trash directory.
^ permalink raw reply [flat|nested] 6+ messages in thread
* Re: [PATCH v2] test-lib: set GIT_CEILING_DIRECTORIES to protect the surrounding repository
2021-08-31 14:40 ` Ævar Arnfjörð Bjarmason
@ 2021-09-01 4:58 ` SZEDER Gábor
0 siblings, 0 replies; 6+ messages in thread
From: SZEDER Gábor @ 2021-09-01 4:58 UTC (permalink / raw)
To: Ævar Arnfjörð Bjarmason; +Cc: git, Carlo Arenas
On Tue, Aug 31, 2021 at 04:40:39PM +0200, Ævar Arnfjörð Bjarmason wrote:
>
> On Sun, Aug 29 2021, SZEDER Gábor wrote:
>
> > Every once in a while a test somehow manages to escape from its trash
> > directory and modifies the surrounding repository, whether because of
> > a bug in git itself, a bug in a test [1], or e.g. when trying to run
> > tests with a shell that is, in general, unable to run our tests [2].
> >
> > Set GIT_CEILING_DIRECTORIES="$TRASH_DIRECTORY/.." as an additional
> > safety measure to protect the surrounding repository at least from
> > modifications by git commands executed in the tests (assuming that
> > handling of ceiling directories during repository discovery is not
> > broken, and, of course, it won't save us from regular shell commands,
> > e.g. 'cd .. && rm -f ...').
> For what it's worth I'm very happy with this, and have been running this
> in my own daily build of git, I've occasionally ran into e.g. needing to
> manually clean up my own git.git's config file because some test escaped
> its trash directory.
Thanks, that's a good point.
After a test escapes from its trash directory I routinely check the
content of the work tree and look for stray refs, but it never occured
to me that I should look at the config, too. And indeed, at the
bottom of .git/config there are two config variables that I don't
remember setting (actually don't even know what they do).
^ permalink raw reply [flat|nested] 6+ messages in thread
end of thread, other threads:[~2021-09-01 4:59 UTC | newest]
Thread overview: 6+ messages (download: mbox.gz / follow: Atom feed)
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2021-08-28 12:13 [PATCH] test-lib: set GIT_CEILING_DIRECTORIES to protect the surrounding repository SZEDER Gábor
2021-08-28 19:56 ` Carlo Arenas
2021-08-29 9:15 ` SZEDER Gábor
2021-08-29 9:25 ` [PATCH v2] " SZEDER Gábor
2021-08-31 14:40 ` Ævar Arnfjörð Bjarmason
2021-09-01 4:58 ` SZEDER Gábor
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