TEST #13
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We should not actually expect the first `attrib.exe` in the PATH to be the one we are looking for. Or that it is in the PATH, for that matter. Signed-off-by: Johannes Schindelin <[email protected]>
MSys2's strace facility is very useful for debugging... With this patch, the bash will be executed through strace if the environment variable GIT_STRACE_COMMANDS is set, which comes in real handy when investigating issues in the test suite. Also support passing a path to a log file via GIT_STRACE_COMMANDS to force Git to call strace.exe with the `-o <path>` argument, i.e. to log into a file rather than print the log directly. That comes in handy when the output would otherwise misinterpreted by a calling process as part of Git's output. Note: the values "1", "yes" or "true" are *not* specifying paths, but tell Git to let strace.exe log directly to the console. Signed-off-by: Johannes Schindelin <[email protected]>
Windows' equivalent to "bind mounts", NTFS junction points, can be unlinked without affecting the mount target. This is clearly what users expect to happen when they call `git clean -dfx` in a worktree that contains NTFS junction points: the junction should be removed, and the target directory of said junction should be left alone (unless it is inside the worktree). Signed-off-by: Johannes Schindelin <[email protected]>
NTFS junctions are somewhat similar in spirit to Unix bind mounts: they point to a different directory and are resolved by the filesystem driver. As such, they appear to `lstat()` as if they are directories, not as if they are symbolic links. _Any_ user can create junctions, while symbolic links can only be created by non-administrators in Developer Mode on Windows 10. Hence NTFS junctions are much more common "in the wild" than NTFS symbolic links. It was reported in git-for-windows#2481 that adding files via an absolute path that traverses an NTFS junction: since 1e64d18 (mingw: do resolve symlinks in `getcwd()`), we resolve not only symbolic links but also NTFS junctions when determining the absolute path of the current directory. The same is not true for `git add <file>`, where symbolic links are resolved in `<file>`, but not NTFS junctions. Signed-off-by: Johannes Schindelin <[email protected]>
The vcpkg_install batch file depends on the availability of a working Git on the CMD path. This may not be present if the user has selected the 'bash only' option during Git-for-Windows install. Detect and tell the user about their lack of a working Git in the CMD window. Fixes git-for-windows#2348. A separate PR git-for-windows/build-extra#258 now highlights the recommended path setting during install. Signed-off-by: Philip Oakley <[email protected]>
Git for Windows' prefix is `/mingw64/` (or `/mingw32/` for 32-bit versions), therefore the system config is located at the clunky location `C:\Program Files\Git\mingw64\etc\gitconfig`. This moves the system config into a more logical location: the `mingw64` part of `C:\Program Files\Git\mingw64\etc\gitconfig` never made sense, as it is a mere implementation detail. Let's skip the `mingw64` part and move this to `C:\Program Files\Git\etc\gitconfig`. Side note: in the rare (and not recommended) case a user chooses to install 32-bit Git for Windows on a 64-bit system, the path will of course be `C:\Program Files (x86)\Git\etc\gitconfig`. Background: During the Git for Windows v1.x days, the system config was located at `C:\Program Files (x86)\Git\etc\gitconfig`. With Git for Windows v2.x, it moved to `C:\Program Files\Git\mingw64\gitconfig` (or `C:\Program Files (x86)\Git\mingw32\gitconfig`). Rather than fixing it back then, we tried to introduce a "Windows-wide" config, but that never caught on. Likewise, we move the system `gitattributes` into the same directory. Obviously, we are cautious to do this only for the known install locations `/mingw64` and `/mingw32`; If anybody wants to override that while building their version of Git (e.g. via `make prefix=$HOME`), we leave the default location of the system config and gitattributes alone. Signed-off-by: Johannes Schindelin <[email protected]>
Some platforms (e.g. Windows) provide API functions to resolve paths much quicker. Let's offer a way to short-cut `strbuf_realpath()` on those platforms. Signed-off-by: Johannes Schindelin <[email protected]>
On certain network filesystems (currently encounterd with Isilon, but in theory more network storage solutions could be causing the same issue), when the directory in question is missing, `raceproof_create_file()` fails with an `ERROR_INVALID_PARAMETER` instead of an `ERROR_PATH_NOT_FOUND`. Since it is highly unlikely that we produce such an error by mistake (the parameters we pass are fairly benign), we can be relatively certain that the directory is missing in this instance. So let's just translate that error automagically. This fixes git-for-windows#1345. Signed-off-by: Nathan Sanders <[email protected]> Signed-off-by: Johannes Schindelin <[email protected]>
no longer relevant after moving to PCRE2 Signed-off-by: Carlo Marcelo Arenas Belón <[email protected]>
The vcpkg downloads may not succeed. Warn careful readers of the time out. A simple retry will usually resolve the issue. Signed-off-by: Philip Oakley <[email protected]> Signed-off-by: Johannes Schindelin <[email protected]>
Git for Windows is compiled with a runtime prefix, and that runtime prefix is typically `C:/Program Files/Git/mingw64`. As we want the system gitconfig to live in the sibling directory `etc`, we define the relative path as `../etc/gitconfig`. However, as reported by Philip Oakley, the output of `git config --show-origin --system -l` looks rather ugly, as it shows the path as `file:C:/Program Files/Git/mingw64/../etc/gitconfig`, i.e. with the `mingw64/../` part. By normalizing the path, we get a prettier path. Signed-off-by: Johannes Schindelin <[email protected]>
While Git for Windows does not _ship_ Python (in order to save on bandwidth), MSYS2 provides very fine Python interpreters that users can easily take advantage of, by using Git for Windows within its SDK. Signed-off-by: Johannes Schindelin <[email protected]>
Since commit 0c499ea the send-pack builtin uses the side-band-64k capability if advertised by the server. Unfortunately this breaks pushing over the dump git protocol if used over a network connection. The detailed reasons for this breakage are (by courtesy of Jeff Preshing, quoted from ttps://groups.google.com/d/msg/msysgit/at8D7J-h7mw/eaLujILGUWoJ): ---------------------------------------------------------------------------- MinGW wraps Windows sockets in CRT file descriptors in order to mimic the functionality of POSIX sockets. This causes msvcrt.dll to treat sockets as Installable File System (IFS) handles, calling ReadFile, WriteFile, DuplicateHandle and CloseHandle on them. This approach works well in simple cases on recent versions of Windows, but does not support all usage patterns. In particular, using this approach, any attempt to read & write concurrently on the same socket (from one or more processes) will deadlock in a scenario where the read waits for a response from the server which is only invoked after the write. This is what send_pack currently attempts to do in the use_sideband codepath. ---------------------------------------------------------------------------- The new config option "sendpack.sideband" allows to override the side-band-64k capability of the server, and thus makes the dump git protocol work. Other transportation methods like ssh and http/https still benefit from the sideband channel, therefore the default value of "sendpack.sideband" is still true. [jes: split out the documentation into Documentation/config/] Signed-off-by: Thomas Braun <[email protected]> Signed-off-by: Johannes Schindelin <[email protected]> Signed-off-by: Oliver Schneider <[email protected]>
The winsock2 library provides functions that work on different data types than file descriptors, therefore we wrap them. But that is not the only difference: they also do not set `errno` but expect the callers to enquire about errors via `WSAGetLastError()`. Let's translate that into appropriate `errno` values whenever the socket operations fail so that Git's code base does not have to change its expectations. This closes git-for-windows#2404 Helped-by: Jeff Hostetler <[email protected]> Signed-off-by: Johannes Schindelin <[email protected]>
As pointed out in git-for-windows#1676, the `git rev-parse --is-inside-work-tree` command currently fails when the current directory's path contains symbolic links. The underlying reason for this bug is that `getcwd()` is supposed to resolve symbolic links, but our `mingw_getcwd()` implementation did not. We do have all the building blocks for that, though: the `GetFinalPathByHandleW()` function will resolve symbolic links. However, we only called that function if `GetLongPathNameW()` failed, for historical reasons: the latter function was supported for a long time, but the former API function was introduced only with Windows Vista, and we used to support also Windows XP. With that support having been dropped, we are free to call the symbolic link-resolving function right away. Signed-off-by: Johannes Schindelin <[email protected]>
In 4dc42c6 (mingw: refuse paths containing reserved names, 2019-12-21), we started disallowing file names that are reserved, e.g. `NUL`, `CONOUT$`, etc. This included `COM<n>` where `<n>` is a digit. Unfortunately, this includes `COM0` but only `COM1`, ..., `COM9` are reserved, according to the official documentation, `COM0` is mentioned in the "NT Namespaces" section but it is explicitly _omitted_ from the list of reserved names: https://docs.microsoft.com/en-us/windows/win32/fileio/naming-a-file#naming-conventions Tests corroborate this: it is totally possible to write a file called `com0.c` on Windows 10, but not `com1.c`. So let's tighten the code to disallow only the reserved `COM<n>` file names, but to allow `COM0` again. This fixes git-for-windows#2470. Signed-off-by: Johannes Schindelin <[email protected]>
In 1e64d18 (mingw: do resolve symlinks in `getcwd()`) a problem was introduced that causes git for Windows to stop working with certain mapped network drives (in particular, drives that are mapped to locations with long path names). Error message was "fatal: Unable to read current working directory: No such file or directory". Present change fixes this issue as discussed in git-for-windows#2480 Signed-off-by: Bjoern Mueller <[email protected]>
Update clink.pl to link with either libcurl.lib or libcurl-d.lib depending on whether DEBUG=1 is set. Signed-off-by: Jeff Hostetler <[email protected]> Signed-off-by: Johannes Schindelin <[email protected]>
There is a Win32 API function to resolve symbolic links, and we can use that instead of resolving them manually. Even better, this function also resolves NTFS junction points (which are somewhat similar to bind mounts). This fixes git-for-windows#2481. Signed-off-by: Johannes Schindelin <[email protected]>
…32 job Once upon a time we ran 'make --jobs=2 ...' to build Git, its documentation, or to apply Coccinelle semantic patches. Then commit eaa6229 (ci: inherit --jobs via MAKEFLAGS in run-build-and-tests, 2019-01-27) came along, and started using the MAKEFLAGS environment variable to centralize setting the number of parallel jobs in 'ci/libs.sh'. Alas, it forgot to update 'ci/run-linux32-docker.sh' to make MAKEFLAGS available inside the Docker container running the 32 bit Linux job, and, consequently, since then that job builds Git sequentially, and it ignores any Makefile knobs that we might set in MAKEFLAGS (though we don't set any for the 32 bit Linux job at the moment). So update the 'docker run' invocation in 'ci/run-linux32-docker.sh' to make MAKEFLAGS available inside the Docker container as well. Set CC=gcc for the 32 bit Linux job, because that's the compiler installed in the 32 bit Linux Docker image that we use (Travis CI nowadays sets CC=clang by default, but clang is not installed in this image). Signed-off-by: SZEDER Gábor <[email protected]> Signed-off-by: Đoàn Trần Công Danh <[email protected]>
We're using "su -m" to preserve environment variables in the shell run by "su". But, that options will be ignored while "-l" (aka "--login") is specified in util-linux and busybox's su. In a later patch this script will be reused for checking Git for Linux with musl libc on Alpine Linux, Alpine Linux uses "su" from busybox. Since we don't have interest in all environment variables, pass only those necessary variables to the inner script. Signed-off-by: Đoàn Trần Công Danh <[email protected]>
In a later patch, the remaining of this command will be re-used for the CI job for linux with musl libc. Allow customisation of the emulator, now. Signed-off-by: Đoàn Trần Công Danh <[email protected]>
We will support alpine check in docker later in this series. While we're at it, tell people to run as root in podman, if podman is used as drop-in replacement for docker, because podman will map host-user to container's root, therefore, mapping their permission. Signed-off-by: Đoàn Trần Công Danh <[email protected]>
A change between versions 2.4.1 and 2.6.0 of the MSYS2 runtime modified how Cygwin's runtime (and hence Git for Windows' MSYS2 runtime derivative) handles locales: d16a56306d (Consolidate wctomb/mbtowc calls for POSIX-1.2008, 2016-07-20). An unintended side-effect is that "cold-calling" into the POSIX emulation will start with a locale based on the current code page, something that Git for Windows is very ill-prepared for, as it expects to be able to pass a command-line containing non-ASCII characters to the shell without having those characters munged. One symptom of this behavior: when `git clone` or `git fetch` shell out to call `git-upload-pack` with a path that contains non-ASCII characters, the shell tried to interpret the entire command-line (including command-line parameters) as executable path, which obviously must fail. This fixes git-for-windows#1036 Signed-off-by: Johannes Schindelin <[email protected]>
BRE interprets `+` literally, and `\+` is undefined for POSIX BRE, from: https://pubs.opengroup.org/onlinepubs/9699919799/basedefs/V1_chap09.html#tag_09_03_02 > The interpretation of an ordinary character preceded > by an unescaped <backslash> ( '\\' ) is undefined, except for: > - The characters ')', '(', '{', and '}' > - The digits 1 to 9 inclusive > - A character inside a bracket expression This test is failing with busybox sed, the default sed of Alpine Linux We have 2 options here: - Using literal `+` because BRE will interpret it as-is, or - Using character class `[+]` to defend against a sed that expects ERE ERE-expected sed is theoretical at this point, but we haven't found it, yet. And, we may run into other problems with that sed. Let's go with first option and fix it later if that sed could be found. Signed-off-by: Đoàn Trần Công Danh <[email protected]> Signed-off-by: Junio C Hamano <[email protected]>
In a later patch, we will add new Travis Job for linux-musl. Most of other code in this file could be reuse for that job. Move the code to install dependencies to a common script. Should we add new CI system that can run directly in container, we can reuse this script for installation step. Signed-off-by: Đoàn Trần Công Danh <[email protected]>
Git for Windows wants to add `git.exe` to the users' `PATH`, without cluttering the latter with unnecessary executables such as `wish.exe`. To that end, it invented the concept of its "Git wrapper", i.e. a tiny executable located in `C:\Program Files\Git\cmd\git.exe` (originally a CMD script) whose sole purpose is to set up a couple of environment variables and then spawn the _actual_ `git.exe` (which nowadays lives in `C:\Program Files\Git\mingw64\bin\git.exe` for 64-bit, and the obvious equivalent for 32-bit installations). Currently, the following environment variables are set unless already initialized: - `MSYSTEM`, to make sure that the MSYS2 Bash and the MSYS2 Perl interpreter behave as expected, and - `PLINK_PROTOCOL`, to force PuTTY's `plink.exe` to use the SSH protocol instead of Telnet, - `PATH`, to make sure that the `bin` folder in the user's home directory, as well as the `/mingw64/bin` and the `/usr/bin` directories are included. The trick here is that the `/mingw64/bin/` and `/usr/bin/` directories are relative to the top-level installation directory of Git for Windows (which the included Bash interprets as `/`, i.e. as the MSYS pseudo root directory). Using the absence of `MSYSTEM` as a tell-tale, we can detect in `git.exe` whether these environment variables have been initialized properly. Therefore we can call `C:\Program Files\Git\mingw64\bin\git` in-place after this change, without having to call Git through the Git wrapper. Obviously, above-mentioned directories must be _prepended_ to the `PATH` variable, otherwise we risk picking up executables from unrelated Git installations. We do that by constructing the new `PATH` value from scratch, appending `$HOME/bin` (if `HOME` is set), then the MSYS2 system directories, and then appending the original `PATH`. Side note: this modification of the `PATH` variable is independent of the modification necessary to reach the executables and scripts in `/mingw64/libexec/git-core/`, i.e. the `GIT_EXEC_PATH`. That modification is still performed by Git, elsewhere, long after making the changes described above. While we _still_ cannot simply hard-link `mingw64\bin\git.exe` to `cmd` (because the former depends on a couple of `.dll` files that are only in `mingw64\bin`, i.e. calling `...\cmd\git.exe` would fail to load due to missing dependencies), at least we can now avoid that extra process of running the Git wrapper (which then has to wait for the spawned `git.exe` to finish) by calling `...\mingw64\bin\git.exe` directly, via its absolute path. Testing this is in Git's test suite tricky: we set up a "new" MSYS pseudo-root and copy the `git.exe` file into the appropriate location, then verify that `MSYSTEM` is set properly, and also that the `PATH` is modified so that scripts can be found in `$HOME/bin`, `/mingw64/bin/` and `/usr/bin/`. This addresses git-for-windows#2283 Signed-off-by: Johannes Schindelin <[email protected]>
Shell recognises first non-assignment token as command name. With /bin/sh linked to either /bin/bash or /bin/dash, `cd t/perf && ./p0000-perf-lib-sanity.sh -d -i -v` reports: > test_cmp:1: command not found: diff -u Using `eval` to unquote $GIT_TEST_CMP as same as precedence in `git_editor`. Signed-off-by: Đoàn Trần Công Danh <[email protected]> Signed-off-by: Junio C Hamano <[email protected]>
Signed-off-by: Đoàn Trần Công Danh <[email protected]>
Originally, we refrained from adding a regression test in 7b6c649 (system_path(): Add prefix computation at runtime if RUNTIME_PREFIX set, 2008-08-10), and in 226c0dd (exec_cmd: RUNTIME_PREFIX on some POSIX systems, 2018-04-10). The reason was that it was deemed too tricky to test. Turns out that it is not tricky to test at all: we simply create a pseudo-root, copy the `git` executable into the `git/` subdirectory of that pseudo-root, then copy a script into the `libexec/git-core/` directory and expect that to be picked up. As long as the trash directory is in a location where binaries can be executed, this works. Signed-off-by: Johannes Schindelin <[email protected]>
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When using a padding specifier in the pretty format passed to git-log(1)
we need to calculate the string length in several places. These string
lengths are stored in `int`s though, which means that these can easily
overflow when the input lengths exceeds 2GB. This can ultimately lead to
an out-of-bounds write when these are used in a call to memcpy(3P):
==8340==ERROR: AddressSanitizer: heap-buffer-overflow on address 0x7f1ec62f97fe at pc 0x7f2127e5f427 bp 0x7ffd3bd63de0 sp 0x7ffd3bd63588
WRITE of size 1 at 0x7f1ec62f97fe thread T0
#0 0x7f2127e5f426 in __interceptor_memcpy /usr/src/debug/gcc/libsanitizer/sanitizer_common/sanitizer_common_interceptors.inc:827
#1 0x5628e96aa605 in format_and_pad_commit pretty.c:1762
#2 0x5628e96aa7f4 in format_commit_item pretty.c:1801
#3 0x5628e97cdb24 in strbuf_expand strbuf.c:429
#4 0x5628e96ab060 in repo_format_commit_message pretty.c:1869
#5 0x5628e96acd0f in pretty_print_commit pretty.c:2161
#6 0x5628e95a44c8 in show_log log-tree.c:781
#7 0x5628e95a76ba in log_tree_commit log-tree.c:1117
#8 0x5628e922bed5 in cmd_log_walk_no_free builtin/log.c:508
#9 0x5628e922c35b in cmd_log_walk builtin/log.c:549
#10 0x5628e922f1a2 in cmd_log builtin/log.c:883
#11 0x5628e9106993 in run_builtin git.c:466
#12 0x5628e9107397 in handle_builtin git.c:721
#13 0x5628e9107b07 in run_argv git.c:788
#14 0x5628e91088a7 in cmd_main git.c:923
#15 0x5628e939d682 in main common-main.c:57
#16 0x7f2127c3c28f (/usr/lib/libc.so.6+0x2328f)
#17 0x7f2127c3c349 in __libc_start_main (/usr/lib/libc.so.6+0x23349)
#18 0x5628e91020e4 in _start ../sysdeps/x86_64/start.S:115
0x7f1ec62f97fe is located 2 bytes to the left of 4831838265-byte region [0x7f1ec62f9800,0x7f1fe62f9839)
allocated by thread T0 here:
#0 0x7f2127ebe7ea in __interceptor_realloc /usr/src/debug/gcc/libsanitizer/asan/asan_malloc_linux.cpp:85
#1 0x5628e98774d4 in xrealloc wrapper.c:136
#2 0x5628e97cb01c in strbuf_grow strbuf.c:99
#3 0x5628e97ccd42 in strbuf_addchars strbuf.c:327
#4 0x5628e96aa55c in format_and_pad_commit pretty.c:1761
#5 0x5628e96aa7f4 in format_commit_item pretty.c:1801
#6 0x5628e97cdb24 in strbuf_expand strbuf.c:429
#7 0x5628e96ab060 in repo_format_commit_message pretty.c:1869
#8 0x5628e96acd0f in pretty_print_commit pretty.c:2161
#9 0x5628e95a44c8 in show_log log-tree.c:781
#10 0x5628e95a76ba in log_tree_commit log-tree.c:1117
#11 0x5628e922bed5 in cmd_log_walk_no_free builtin/log.c:508
#12 0x5628e922c35b in cmd_log_walk builtin/log.c:549
#13 0x5628e922f1a2 in cmd_log builtin/log.c:883
#14 0x5628e9106993 in run_builtin git.c:466
#15 0x5628e9107397 in handle_builtin git.c:721
#16 0x5628e9107b07 in run_argv git.c:788
#17 0x5628e91088a7 in cmd_main git.c:923
#18 0x5628e939d682 in main common-main.c:57
#19 0x7f2127c3c28f (/usr/lib/libc.so.6+0x2328f)
#20 0x7f2127c3c349 in __libc_start_main (/usr/lib/libc.so.6+0x23349)
#21 0x5628e91020e4 in _start ../sysdeps/x86_64/start.S:115
SUMMARY: AddressSanitizer: heap-buffer-overflow /usr/src/debug/gcc/libsanitizer/sanitizer_common/sanitizer_common_interceptors.inc:827 in __interceptor_memcpy
Shadow bytes around the buggy address:
0x0fe458c572a0: fa fa fa fa fa fa fa fa fa fa fa fa fa fa fa fa
0x0fe458c572b0: fa fa fa fa fa fa fa fa fa fa fa fa fa fa fa fa
0x0fe458c572c0: fa fa fa fa fa fa fa fa fa fa fa fa fa fa fa fa
0x0fe458c572d0: fa fa fa fa fa fa fa fa fa fa fa fa fa fa fa fa
0x0fe458c572e0: fa fa fa fa fa fa fa fa fa fa fa fa fa fa fa fa
=>0x0fe458c572f0: fa fa fa fa fa fa fa fa fa fa fa fa fa fa fa[fa]
0x0fe458c57300: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
0x0fe458c57310: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
0x0fe458c57320: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
0x0fe458c57330: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
0x0fe458c57340: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
Shadow byte legend (one shadow byte represents 8 application bytes):
Addressable: 00
Partially addressable: 01 02 03 04 05 06 07
Heap left redzone: fa
Freed heap region: fd
Stack left redzone: f1
Stack mid redzone: f2
Stack right redzone: f3
Stack after return: f5
Stack use after scope: f8
Global redzone: f9
Global init order: f6
Poisoned by user: f7
Container overflow: fc
Array cookie: ac
Intra object redzone: bb
ASan internal: fe
Left alloca redzone: ca
Right alloca redzone: cb
==8340==ABORTING
The pretty format can also be used in `git archive` operations via the
`export-subst` attribute. So this is what in our opinion makes this a
critical issue in the context of Git forges which allow to download an
archive of user supplied Git repositories.
Fix this vulnerability by using `size_t` instead of `int` to track the
string lengths. Add tests which detect this vulnerability when Git is
compiled with the address sanitizer.
Reported-by: Joern Schneeweisz <[email protected]>
Original-patch-by: Joern Schneeweisz <[email protected]>
Modified-by: Taylor Blau <[email protected]>
Signed-off-by: Patrick Steinhardt <[email protected]>
Signed-off-by: Junio C Hamano <[email protected]>
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