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git/t/t1504-ceiling-dirs.sh

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Add support for GIT_CEILING_DIRECTORIES Make git recognize a new environment variable that prevents it from chdir'ing up into specified directories when looking for a GIT_DIR. Useful for avoiding slow network directories. For example, I use git in an environment where homedirs are automounted and "ls /home/nonexistent" takes about 9 seconds. Setting GIT_CEILING_DIRS="/home" allows "git help -a" (for bash completion) and "git symbolic-ref" (for my shell prompt) to run in a reasonable time. Signed-off-by: David Reiss <dreiss@facebook.com> Signed-off-by: Junio C Hamano <gitster@pobox.com>
2008-05-20 14:49:26 +08:00
#!/bin/sh
test_description='test GIT_CEILING_DIRECTORIES'
. ./test-lib.sh
test_prefix() {
test_expect_success "$1" \
"test '$2' = \"\$(git rev-parse --show-prefix)\""
}
test_fail() {
test-lib: make test_expect_code a test command Change test_expect_code to be a normal test command instead of a top-level command. As a top-level command it would fail in cases like: test_expect_code 1 'phoney' ' foo && bar && (exit 1) ' Here the test might incorrectly succeed if "foo" or "bar" happened to fail with exit status 1. Instead we now do: test_expect_success 'phoney' ' foo && bar && test_expect_code 1 "(exit 1)" ' Which will only succeed if "foo" and "bar" return status 0, and "(exit 1)" returns status 1. Note that test_expect_code has been made slightly noisier, as it reports the exit code it receives even upon success. Some test code in t0000-basic.sh relied on the old semantics of test_expect_code to test the test_when_finished command. I've converted that code to use an external test similar to the TODO test I added in v1.7.3-rc0~2^2~3. Signed-off-by: Ævar Arnfjörð Bjarmason <avarab@gmail.com> Acked-by: Jonathan Nieder <jrnieder@gmail.com> Signed-off-by: Elijah Newren <newren@gmail.com> Signed-off-by: Junio C Hamano <gitster@pobox.com>
2010-10-04 03:59:59 +08:00
test_expect_success "$1: prefix" '
test_expect_code 128 git rev-parse --show-prefix
'
Add support for GIT_CEILING_DIRECTORIES Make git recognize a new environment variable that prevents it from chdir'ing up into specified directories when looking for a GIT_DIR. Useful for avoiding slow network directories. For example, I use git in an environment where homedirs are automounted and "ls /home/nonexistent" takes about 9 seconds. Setting GIT_CEILING_DIRS="/home" allows "git help -a" (for bash completion) and "git symbolic-ref" (for my shell prompt) to run in a reasonable time. Signed-off-by: David Reiss <dreiss@facebook.com> Signed-off-by: Junio C Hamano <gitster@pobox.com>
2008-05-20 14:49:26 +08:00
}
Tests on Windows: $(pwd) must return Windows-style paths Many tests pass $(pwd) in some form to git and later test that the output of git contains the correct value of $(pwd). For example, the test of 'git remote show' sets up a remote that contains $(pwd) and then the expected result must contain $(pwd). Again, MSYS-bash's path mangling kicks in: Plain $(pwd) uses the MSYS style absolute path /c/path/to/git. The test case would write this name into the 'expect' file. But when git is invoked, MSYS-bash converts this name to the Windows style path c:/path/to/git, and git would produce this form in the result; the test would fail. We fix this by passing -W to bash's pwd that produces the Windows-style path. There are a two cases that need an accompanying change: - In t1504 the value of $(pwd) becomes part of a path list. In this case, the lone 'c' in something like /foo:c:/path/to/git:/bar inhibits MSYS-bashes path mangling; IOW in this case we want the /c/path/to/git form to allow path mangling. We use $PWD instead of $(pwd), which always has the latter form. - In t6200, $(pwd) - the Windows style path - must be used to construct the expected result because that is the path form that git sees. (The change in the test itself is just for consistency: 'git fetch' always sees the Windows-style path, with or without the change.) Signed-off-by: Johannes Sixt <j6t@kdbg.org>
2009-03-14 06:35:24 +08:00
TRASH_ROOT="$PWD"
Add support for GIT_CEILING_DIRECTORIES Make git recognize a new environment variable that prevents it from chdir'ing up into specified directories when looking for a GIT_DIR. Useful for avoiding slow network directories. For example, I use git in an environment where homedirs are automounted and "ls /home/nonexistent" takes about 9 seconds. Setting GIT_CEILING_DIRS="/home" allows "git help -a" (for bash completion) and "git symbolic-ref" (for my shell prompt) to run in a reasonable time. Signed-off-by: David Reiss <dreiss@facebook.com> Signed-off-by: Junio C Hamano <gitster@pobox.com>
2008-05-20 14:49:26 +08:00
ROOT_PARENT=$(dirname "$TRASH_ROOT")
unset GIT_CEILING_DIRECTORIES
test_prefix no_ceil ""
export GIT_CEILING_DIRECTORIES
GIT_CEILING_DIRECTORIES=""
test_prefix ceil_empty ""
GIT_CEILING_DIRECTORIES="$ROOT_PARENT"
test_prefix ceil_at_parent ""
GIT_CEILING_DIRECTORIES="$ROOT_PARENT/"
test_prefix ceil_at_parent_slash ""
GIT_CEILING_DIRECTORIES="$TRASH_ROOT"
test_prefix ceil_at_trash ""
GIT_CEILING_DIRECTORIES="$TRASH_ROOT/"
test_prefix ceil_at_trash_slash ""
GIT_CEILING_DIRECTORIES="$TRASH_ROOT/sub"
test_prefix ceil_at_sub ""
GIT_CEILING_DIRECTORIES="$TRASH_ROOT/sub/"
test_prefix ceil_at_sub_slash ""
Provide a mechanism to turn off symlink resolution in ceiling paths Commit 1b77d83cab 'setup_git_directory_gently_1(): resolve symlinks in ceiling paths' changed the setup code to resolve symlinks in the entries in GIT_CEILING_DIRECTORIES. Because those entries are compared textually to the symlink-resolved current directory, an entry in GIT_CEILING_DIRECTORIES that contained a symlink would have no effect. It was known that this could cause performance problems if the symlink resolution *itself* touched slow filesystems, but it was thought that such use cases would be unlikely. The intention of the earlier change was to deal with a case when the user has this: GIT_CEILING_DIRECTORIES=/home/gitster but in reality, /home/gitster is a symbolic link to somewhere else, e.g. /net/machine/home4/gitster. A textual comparison between the specified value /home/gitster and the location getcwd(3) returns would not help us, but readlink("/home/gitster") would still be fast. After this change was released, Anders Kaseorg <andersk@mit.edu> reported: > [...] my computer has been acting so slow when I’m not connected to > the network. I put various network filesystem paths in > $GIT_CEILING_DIRECTORIES, such as > /afs/athena.mit.edu/user/a/n/andersk (to avoid hitting its parents > /afs/athena.mit.edu, /afs/athena.mit.edu/user/a, and > /afs/athena.mit.edu/user/a/n which all live in different AFS > volumes). Now when I’m not connected to the network, every > invocation of Git, including the __git_ps1 in my shell prompt, waits > for AFS to timeout. To allow users to work around this problem, give them a mechanism to turn off symlink resolution in GIT_CEILING_DIRECTORIES entries. All the entries that follow an empty entry will not be checked for symbolic links and used literally in comparison. E.g. with these: GIT_CEILING_DIRECTORIES=:/foo/bar:/xyzzy or GIT_CEILING_DIRECTORIES=/foo/bar::/xyzzy we will not readlink("/xyzzy") because it comes after an empty entry. With the former (but not with the latter), "/foo/bar" comes after an empty entry, and we will not readlink it, either. Signed-off-by: Michael Haggerty <mhagger@alum.mit.edu> Signed-off-by: Junio C Hamano <gitster@pobox.com>
2013-02-20 17:09:24 +08:00
if test_have_prereq SYMLINKS
then
ln -s sub top
fi
Add support for GIT_CEILING_DIRECTORIES Make git recognize a new environment variable that prevents it from chdir'ing up into specified directories when looking for a GIT_DIR. Useful for avoiding slow network directories. For example, I use git in an environment where homedirs are automounted and "ls /home/nonexistent" takes about 9 seconds. Setting GIT_CEILING_DIRS="/home" allows "git help -a" (for bash completion) and "git symbolic-ref" (for my shell prompt) to run in a reasonable time. Signed-off-by: David Reiss <dreiss@facebook.com> Signed-off-by: Junio C Hamano <gitster@pobox.com>
2008-05-20 14:49:26 +08:00
mkdir -p sub/dir || exit 1
cd sub/dir || exit 1
unset GIT_CEILING_DIRECTORIES
test_prefix subdir_no_ceil "sub/dir/"
export GIT_CEILING_DIRECTORIES
GIT_CEILING_DIRECTORIES=""
test_prefix subdir_ceil_empty "sub/dir/"
GIT_CEILING_DIRECTORIES="$TRASH_ROOT"
test_fail subdir_ceil_at_trash
GIT_CEILING_DIRECTORIES="$TRASH_ROOT/"
test_fail subdir_ceil_at_trash_slash
GIT_CEILING_DIRECTORIES="$TRASH_ROOT/sub"
test_fail subdir_ceil_at_sub
GIT_CEILING_DIRECTORIES="$TRASH_ROOT/sub/"
test_fail subdir_ceil_at_sub_slash
Provide a mechanism to turn off symlink resolution in ceiling paths Commit 1b77d83cab 'setup_git_directory_gently_1(): resolve symlinks in ceiling paths' changed the setup code to resolve symlinks in the entries in GIT_CEILING_DIRECTORIES. Because those entries are compared textually to the symlink-resolved current directory, an entry in GIT_CEILING_DIRECTORIES that contained a symlink would have no effect. It was known that this could cause performance problems if the symlink resolution *itself* touched slow filesystems, but it was thought that such use cases would be unlikely. The intention of the earlier change was to deal with a case when the user has this: GIT_CEILING_DIRECTORIES=/home/gitster but in reality, /home/gitster is a symbolic link to somewhere else, e.g. /net/machine/home4/gitster. A textual comparison between the specified value /home/gitster and the location getcwd(3) returns would not help us, but readlink("/home/gitster") would still be fast. After this change was released, Anders Kaseorg <andersk@mit.edu> reported: > [...] my computer has been acting so slow when I’m not connected to > the network. I put various network filesystem paths in > $GIT_CEILING_DIRECTORIES, such as > /afs/athena.mit.edu/user/a/n/andersk (to avoid hitting its parents > /afs/athena.mit.edu, /afs/athena.mit.edu/user/a, and > /afs/athena.mit.edu/user/a/n which all live in different AFS > volumes). Now when I’m not connected to the network, every > invocation of Git, including the __git_ps1 in my shell prompt, waits > for AFS to timeout. To allow users to work around this problem, give them a mechanism to turn off symlink resolution in GIT_CEILING_DIRECTORIES entries. All the entries that follow an empty entry will not be checked for symbolic links and used literally in comparison. E.g. with these: GIT_CEILING_DIRECTORIES=:/foo/bar:/xyzzy or GIT_CEILING_DIRECTORIES=/foo/bar::/xyzzy we will not readlink("/xyzzy") because it comes after an empty entry. With the former (but not with the latter), "/foo/bar" comes after an empty entry, and we will not readlink it, either. Signed-off-by: Michael Haggerty <mhagger@alum.mit.edu> Signed-off-by: Junio C Hamano <gitster@pobox.com>
2013-02-20 17:09:24 +08:00
if test_have_prereq SYMLINKS
then
GIT_CEILING_DIRECTORIES="$TRASH_ROOT/top"
test_fail subdir_ceil_at_top
GIT_CEILING_DIRECTORIES="$TRASH_ROOT/top/"
test_fail subdir_ceil_at_top_slash
GIT_CEILING_DIRECTORIES=":$TRASH_ROOT/top"
test_prefix subdir_ceil_at_top_no_resolve "sub/dir/"
GIT_CEILING_DIRECTORIES=":$TRASH_ROOT/top/"
test_prefix subdir_ceil_at_top_slash_no_resolve "sub/dir/"
fi
Add support for GIT_CEILING_DIRECTORIES Make git recognize a new environment variable that prevents it from chdir'ing up into specified directories when looking for a GIT_DIR. Useful for avoiding slow network directories. For example, I use git in an environment where homedirs are automounted and "ls /home/nonexistent" takes about 9 seconds. Setting GIT_CEILING_DIRS="/home" allows "git help -a" (for bash completion) and "git symbolic-ref" (for my shell prompt) to run in a reasonable time. Signed-off-by: David Reiss <dreiss@facebook.com> Signed-off-by: Junio C Hamano <gitster@pobox.com>
2008-05-20 14:49:26 +08:00
GIT_CEILING_DIRECTORIES="$TRASH_ROOT/sub/dir"
test_prefix subdir_ceil_at_subdir "sub/dir/"
GIT_CEILING_DIRECTORIES="$TRASH_ROOT/sub/dir/"
test_prefix subdir_ceil_at_subdir_slash "sub/dir/"
GIT_CEILING_DIRECTORIES="$TRASH_ROOT/su"
test_prefix subdir_ceil_at_su "sub/dir/"
GIT_CEILING_DIRECTORIES="$TRASH_ROOT/su/"
test_prefix subdir_ceil_at_su_slash "sub/dir/"
GIT_CEILING_DIRECTORIES="$TRASH_ROOT/sub/di"
test_prefix subdir_ceil_at_sub_di "sub/dir/"
GIT_CEILING_DIRECTORIES="$TRASH_ROOT/sub/di"
test_prefix subdir_ceil_at_sub_di_slash "sub/dir/"
GIT_CEILING_DIRECTORIES="$TRASH_ROOT/subdi"
test_prefix subdir_ceil_at_subdi "sub/dir/"
GIT_CEILING_DIRECTORIES="$TRASH_ROOT/subdi"
test_prefix subdir_ceil_at_subdi_slash "sub/dir/"
Fix GIT_CEILING_DIRECTORIES on Windows Using git with GIT_CEILING_DIRECTORIES crashed on Windows due to a failed assertion in normalize_absolute_path(): This function expects absolute paths to start with a slash, while on Windows they can start with a drive letter or a backslash. This fixes it by using the alternative, normalize_path_copy() instead, which can handle Windows-style paths just fine. Secondly, the portability macro PATH_SEP is used instead of expecting colons to be used as path list delimiter. The test script t1504 is also changed to help MSYS's bash recognize some program arguments as path list. (MSYS's bash must translate POSIX-style path lists to Windows-style path lists, and the heuristic did not catch some cases.) Signed-off-by: Rene Scharfe <rene.scharfe@lsrfire.ath.cx> Signed-off-by: Johannes Sixt <j6t@kdbg.org> Signed-off-by: Junio C Hamano <gitster@pobox.com>
2009-02-07 23:08:29 +08:00
GIT_CEILING_DIRECTORIES="/foo:$TRASH_ROOT/sub"
Add support for GIT_CEILING_DIRECTORIES Make git recognize a new environment variable that prevents it from chdir'ing up into specified directories when looking for a GIT_DIR. Useful for avoiding slow network directories. For example, I use git in an environment where homedirs are automounted and "ls /home/nonexistent" takes about 9 seconds. Setting GIT_CEILING_DIRS="/home" allows "git help -a" (for bash completion) and "git symbolic-ref" (for my shell prompt) to run in a reasonable time. Signed-off-by: David Reiss <dreiss@facebook.com> Signed-off-by: Junio C Hamano <gitster@pobox.com>
2008-05-20 14:49:26 +08:00
test_fail second_of_two
Fix GIT_CEILING_DIRECTORIES on Windows Using git with GIT_CEILING_DIRECTORIES crashed on Windows due to a failed assertion in normalize_absolute_path(): This function expects absolute paths to start with a slash, while on Windows they can start with a drive letter or a backslash. This fixes it by using the alternative, normalize_path_copy() instead, which can handle Windows-style paths just fine. Secondly, the portability macro PATH_SEP is used instead of expecting colons to be used as path list delimiter. The test script t1504 is also changed to help MSYS's bash recognize some program arguments as path list. (MSYS's bash must translate POSIX-style path lists to Windows-style path lists, and the heuristic did not catch some cases.) Signed-off-by: Rene Scharfe <rene.scharfe@lsrfire.ath.cx> Signed-off-by: Johannes Sixt <j6t@kdbg.org> Signed-off-by: Junio C Hamano <gitster@pobox.com>
2009-02-07 23:08:29 +08:00
GIT_CEILING_DIRECTORIES="$TRASH_ROOT/sub:/bar"
Add support for GIT_CEILING_DIRECTORIES Make git recognize a new environment variable that prevents it from chdir'ing up into specified directories when looking for a GIT_DIR. Useful for avoiding slow network directories. For example, I use git in an environment where homedirs are automounted and "ls /home/nonexistent" takes about 9 seconds. Setting GIT_CEILING_DIRS="/home" allows "git help -a" (for bash completion) and "git symbolic-ref" (for my shell prompt) to run in a reasonable time. Signed-off-by: David Reiss <dreiss@facebook.com> Signed-off-by: Junio C Hamano <gitster@pobox.com>
2008-05-20 14:49:26 +08:00
test_fail first_of_two
Fix GIT_CEILING_DIRECTORIES on Windows Using git with GIT_CEILING_DIRECTORIES crashed on Windows due to a failed assertion in normalize_absolute_path(): This function expects absolute paths to start with a slash, while on Windows they can start with a drive letter or a backslash. This fixes it by using the alternative, normalize_path_copy() instead, which can handle Windows-style paths just fine. Secondly, the portability macro PATH_SEP is used instead of expecting colons to be used as path list delimiter. The test script t1504 is also changed to help MSYS's bash recognize some program arguments as path list. (MSYS's bash must translate POSIX-style path lists to Windows-style path lists, and the heuristic did not catch some cases.) Signed-off-by: Rene Scharfe <rene.scharfe@lsrfire.ath.cx> Signed-off-by: Johannes Sixt <j6t@kdbg.org> Signed-off-by: Junio C Hamano <gitster@pobox.com>
2009-02-07 23:08:29 +08:00
GIT_CEILING_DIRECTORIES="/foo:$TRASH_ROOT/sub:/bar"
Add support for GIT_CEILING_DIRECTORIES Make git recognize a new environment variable that prevents it from chdir'ing up into specified directories when looking for a GIT_DIR. Useful for avoiding slow network directories. For example, I use git in an environment where homedirs are automounted and "ls /home/nonexistent" takes about 9 seconds. Setting GIT_CEILING_DIRS="/home" allows "git help -a" (for bash completion) and "git symbolic-ref" (for my shell prompt) to run in a reasonable time. Signed-off-by: David Reiss <dreiss@facebook.com> Signed-off-by: Junio C Hamano <gitster@pobox.com>
2008-05-20 14:49:26 +08:00
test_fail second_of_three
GIT_CEILING_DIRECTORIES="$TRASH_ROOT/sub"
GIT_DIR=../../.git
export GIT_DIR
test_prefix git_dir_specified ""
unset GIT_DIR
cd ../.. || exit 1
mkdir -p s/d || exit 1
cd s/d || exit 1
unset GIT_CEILING_DIRECTORIES
test_prefix sd_no_ceil "s/d/"
export GIT_CEILING_DIRECTORIES
GIT_CEILING_DIRECTORIES=""
test_prefix sd_ceil_empty "s/d/"
GIT_CEILING_DIRECTORIES="$TRASH_ROOT"
test_fail sd_ceil_at_trash
GIT_CEILING_DIRECTORIES="$TRASH_ROOT/"
test_fail sd_ceil_at_trash_slash
GIT_CEILING_DIRECTORIES="$TRASH_ROOT/s"
test_fail sd_ceil_at_s
GIT_CEILING_DIRECTORIES="$TRASH_ROOT/s/"
test_fail sd_ceil_at_s_slash
GIT_CEILING_DIRECTORIES="$TRASH_ROOT/s/d"
test_prefix sd_ceil_at_sd "s/d/"
GIT_CEILING_DIRECTORIES="$TRASH_ROOT/s/d/"
test_prefix sd_ceil_at_sd_slash "s/d/"
GIT_CEILING_DIRECTORIES="$TRASH_ROOT/su"
test_prefix sd_ceil_at_su "s/d/"
GIT_CEILING_DIRECTORIES="$TRASH_ROOT/su/"
test_prefix sd_ceil_at_su_slash "s/d/"
GIT_CEILING_DIRECTORIES="$TRASH_ROOT/s/di"
test_prefix sd_ceil_at_s_di "s/d/"
GIT_CEILING_DIRECTORIES="$TRASH_ROOT/s/di"
test_prefix sd_ceil_at_s_di_slash "s/d/"
GIT_CEILING_DIRECTORIES="$TRASH_ROOT/sdi"
test_prefix sd_ceil_at_sdi "s/d/"
GIT_CEILING_DIRECTORIES="$TRASH_ROOT/sdi"
test_prefix sd_ceil_at_sdi_slash "s/d/"
test_done
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