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2017-06-23path: add repo_worktree_path and strbuf_repo_worktree_pathLibravatar Brandon Williams1-0/+41
Introduce 'repo_worktree_path' and 'strbuf_repo_worktree_path' which take a repository struct and constructs a path relative to the repository's worktree. Signed-off-by: Brandon Williams <bmwill@google.com> Signed-off-by: Junio C Hamano <gitster@pobox.com>
2017-06-23path: add repo_git_path and strbuf_repo_git_pathLibravatar Brandon Williams1-0/+21
Introduce 'repo_git_path' and 'strbuf_repo_git_path' which take a repository struct and constructs a path into the repository's git directory. Signed-off-by: Brandon Williams <bmwill@google.com> Signed-off-by: Junio C Hamano <gitster@pobox.com>
2017-06-23path: worktree_git_path() should not use file relocationLibravatar Brandon Williams1-1/+2
git_path is a convenience function that usually produces a string $GIT_DIR/<path>. Since v2.5.0-rc0~143^2~35 (git_path(): be aware of file relocation in $GIT_DIR, 2014-11-30), as a side benefit callers get support for path relocation variables like $GIT_OBJECT_DIRECTORY: - git_path("index") is $GIT_INDEX_FILE when set - git_path("info/grafts") is $GIT_GRAFTS_FILE when set - git_path("objects/<foo>") is $GIT_OBJECT_DIRECTORY/<foo> when set - git_path("hooks/<foo>") is <foo> under core.hookspath when set - git_path("refs/<foo>") etc (see path.c::common_list) is relative to $GIT_COMMON_DIR instead of $GIT_DIR worktree_git_path, by comparison, is designed to resolve files in a specific worktree's git dir. Unfortunately, it shares code with git_path and performs the same relocation. The result is that paths that are meant to be relative to the specified worktree's git dir end up replaced by paths from environment variables within the current git dir. Luckily, no current callers pass such arguments. The relocation was noticed when testing the result of merging two patches under review, one of which introduces a caller: * The first patch made git prune check the index file in each worktree's git dir (using worktree_git_path(wt, "index")) for objects not to prune. This would trigger the unwanted relocation when GIT_INDEX_FILE is set, causing objects reachable from the index to be pruned. * The second patch simplified the relocation logic for index, info/grafts, objects, and hooks to happen unconditionally instead of based on whether environment or configuration variables are set. This caused the relocation to trigger even when GIT_INDEX_FILE is not set. [jn: rewrote commit message; skipping all relocation instead of just GIT_INDEX_FILE] Signed-off-by: Brandon Williams <bmwill@google.com> Signed-off-by: Jonathan Nieder <jrnieder@gmail.com> Signed-off-by: Junio C Hamano <gitster@pobox.com>
2017-06-23path: convert do_git_path to take a 'struct repository'Libravatar Brandon Williams1-14/+28
In preparation to adding 'git_path' like functions which operate on a 'struct repository' convert 'do_git_path' to take a 'struct repository'. Signed-off-by: Brandon Williams <bmwill@google.com> Signed-off-by: Junio C Hamano <gitster@pobox.com>
2017-06-23path: convert strbuf_git_common_path to take a 'struct repository'Libravatar Brandon Williams1-5/+8
Signed-off-by: Brandon Williams <bmwill@google.com> Signed-off-by: Junio C Hamano <gitster@pobox.com>
2017-06-23path: always pass in commondir to update_common_dirLibravatar Brandon Williams1-3/+1
Instead of passing in 'NULL' and having 'update_common_dir()' query for the commondir, have the callers of 'update_common_dir()' be responsible for providing the commondir. Signed-off-by: Brandon Williams <bmwill@google.com> Signed-off-by: Junio C Hamano <gitster@pobox.com>
2017-06-23path: create path.hLibravatar Brandon Williams1-0/+1
Move all path related declarations from cache.h to a new path.h header file. This makes cache.h smaller and makes it easier to add new path related functions. Signed-off-by: Brandon Williams <bmwill@google.com> Signed-off-by: Junio C Hamano <gitster@pobox.com>
2017-06-23environment: place key repository state in the_repositoryLibravatar Brandon Williams1-5/+6
Migrate 'git_dir', 'git_common_dir', 'git_object_dir', 'git_index_file', 'git_graft_file', and 'namespace' to be stored in 'the_repository'. Signed-off-by: Brandon Williams <bmwill@google.com> Signed-off-by: Junio C Hamano <gitster@pobox.com>
2017-04-23Merge branch 'nd/conditional-config-include'Libravatar Junio C Hamano1-3/+8
$GIT_DIR may in some cases be normalized with all symlinks resolved while "gitdir" path expansion in the pattern does not receive the same treatment, leading to incorrect mismatch. This has been fixed. * nd/conditional-config-include: config: resolve symlinks in conditional include's patterns path.c: and an option to call real_path() in expand_user_path()
2017-04-19Merge branch 'nd/files-backend-git-dir'Libravatar Junio C Hamano1-28/+7
The "submodule" specific field in the ref_store structure is replaced with a more generic "gitdir" that can later be used also when dealing with ref_store that represents the set of refs visible from the other worktrees. * nd/files-backend-git-dir: (28 commits) refs.h: add a note about sorting order of for_each_ref_* t1406: new tests for submodule ref store t1405: some basic tests on main ref store t/helper: add test-ref-store to test ref-store functions refs: delete pack_refs() in favor of refs_pack_refs() files-backend: avoid ref api targeting main ref store refs: new transaction related ref-store api refs: add new ref-store api refs: rename get_ref_store() to get_submodule_ref_store() and make it public files-backend: replace submodule_allowed check in files_downcast() refs: move submodule code out of files-backend.c path.c: move some code out of strbuf_git_path_submodule() refs.c: make get_main_ref_store() public and use it refs.c: kill register_ref_store(), add register_submodule_ref_store() refs.c: flatten get_ref_store() a bit refs: rename lookup_ref_store() to lookup_submodule_ref_store() refs.c: introduce get_main_ref_store() files-backend: remove the use of git_path() files-backend: add and use files_ref_path() files-backend: add and use files_reflog_path() ...
2017-04-14path.c: and an option to call real_path() in expand_user_path()Libravatar Nguyễn Thái Ngọc Duy1-3/+8
In the next patch we need the ability to expand '~' to real_path($HOME). But we can't do that from outside because '~' is part of a pattern, not a true path. Add an option to expand_user_path() to do so. Signed-off-by: Nguyễn Thái Ngọc Duy <pclouds@gmail.com> Signed-off-by: Junio C Hamano <gitster@pobox.com>
2017-03-27path.c: move some code out of strbuf_git_path_submodule()Libravatar Nguyễn Thái Ngọc Duy1-28/+7
refs is learning to avoid path rewriting that is done by strbuf_git_path_submodule(). Factor out this code so it could be reused by refs_* functions. Signed-off-by: Nguyễn Thái Ngọc Duy <pclouds@gmail.com> Signed-off-by: Junio C Hamano <gitster@pobox.com>
2017-03-13path.c: add xdg_cache_homeLibravatar Devin Lehmacher1-0/+15
We already have xdg_config_home to format paths relative to XDG_CONFIG_HOME. Let's provide a similar function xdg_cache_home to do the same for paths relative to XDG_CACHE_HOME. Signed-off-by: Devin Lehmacher <lehmacdj@gmail.com> Signed-off-by: Junio C Hamano <gitster@pobox.com>
2016-12-19Merge branch 'js/normalize-path-copy-ceil'Libravatar Junio C Hamano1-9/+14
A pathname that begins with "//" or "\\" on Windows is special but path normalization logic was unaware of it. * js/normalize-path-copy-ceil: normalize_path_copy(): fix pushing to //server/share/dir on Windows
2016-12-16normalize_path_copy(): fix pushing to //server/share/dir on WindowsLibravatar Johannes Sixt1-9/+14
normalize_path_copy() is not prepared to keep the double-slash of a //server/share/dir kind of path, but treats it like a regular POSIX style path and transforms it to /server/share/dir. The bug manifests when 'git push //server/share/dir master' is run, because tmp_objdir_add_as_alternate() uses the path in normalized form when it registers the quarantine object database via link_alt_odb_entries(). Needless to say that the directory cannot be accessed using the wrongly normalized path. Fix it by skipping all of the root part, not just a potential drive prefix. offset_1st_component takes care of this, see the implementation in compat/mingw.c::mingw_offset_1st_component(). Signed-off-by: Johannes Sixt <j6t@kdbg.org> Signed-off-by: Junio C Hamano <gitster@pobox.com>
2016-10-27Merge branch 'rs/ring-buffer-wraparound'Libravatar Junio C Hamano1-1/+2
The code that we have used for the past 10+ years to cycle 4-element ring buffers turns out to be not quite portable in theoretical world. * rs/ring-buffer-wraparound: hex: make wraparound of the index into ring-buffer explicit
2016-10-26hex: make wraparound of the index into ring-buffer explicitLibravatar René Scharfe1-1/+2
Overflow is defined for unsigned integers, but not for signed ones. We could make the ring-buffer index in sha1_to_hex() and get_pathname() unsigned to be on the safe side to resolve this, but let's make it explicit that we are wrapping around at whatever the number of elements the ring-buffer has. The compiler is smart enough to turn modulus into bitmask for these codepaths that use ring-buffers of a size that is a power of 2. Signed-off-by: René Scharfe <l.s.r@web.de> Signed-off-by: Junio C Hamano <gitster@pobox.com>
2016-09-12Merge branch 'jk/diff-submodule-diff-inline'Libravatar Junio C Hamano1-6/+33
The "git diff --submodule={short,log}" mechanism has been enhanced to allow "--submodule=diff" to show the patch between the submodule commits bound to the superproject. * jk/diff-submodule-diff-inline: diff: teach diff to display submodule difference with an inline diff submodule: refactor show_submodule_summary with helper function submodule: convert show_submodule_summary to use struct object_id * allow do_submodule_path to work even if submodule isn't checked out diff: prepare for additional submodule formats graph: add support for --line-prefix on all graph-aware output diff.c: remove output_prefix_length field cache: add empty_tree_oid object and helper function
2016-08-31allow do_submodule_path to work even if submodule isn't checked outLibravatar Jacob Keller1-6/+33
Currently, do_submodule_path will attempt locating the .git directory by using read_gitfile on <path>/.git. If this fails it just assumes the <path>/.git is actually a git directory. This is good because it allows for handling submodules which were cloned in a regular manner first before being added to the superproject. Unfortunately this fails if the <path> is not actually checked out any longer, such as by removing the directory. Fix this by checking if the directory we found is actually a gitdir. In the case it is not, attempt to lookup the submodule configuration and find the name of where it is stored in the .git/modules/ directory of the superproject. If we can't locate the submodule configuration, this might occur because for example a submodule gitlink was added but the corresponding .gitmodules file was not properly updated. A die() here would not be pleasant to the users of submodule diff formats, so instead, modify do_submodule_path() to return an error code: - git_pathdup_submodule() returns NULL when we fail to find a path. - strbuf_git_path_submodule() propagates the error code to the caller. Modify the callers of these functions to check the error code and fail properly. This ensures we don't attempt to use a bad path that doesn't match the corresponding submodule. Because this change fixes add_submodule_odb() to work even if the submodule is not checked out, update the wording of the submodule log diff format to correctly display that the submodule is "not initialized" instead of "not checked out" Add tests to ensure this change works as expected. Signed-off-by: Jacob Keller <jacob.keller@gmail.com> Signed-off-by: Junio C Hamano <gitster@pobox.com>
2016-08-19Merge branch 'ab/hooks'Libravatar Junio C Hamano1-0/+2
"git rev-parse --git-path hooks/<hook>" learned to take core.hooksPath configuration variable (introduced during 2.9 cycle) into account. * ab/hooks: rev-parse: respect core.hooksPath in --git-path
2016-08-16rev-parse: respect core.hooksPath in --git-pathLibravatar Johannes Schindelin1-0/+2
The idea of the --git-path option is not only to avoid having to prefix paths with the output of --git-dir all the time, but also to respect overrides for specific common paths inside the .git directory (e.g. `git rev-parse --git-path objects` will report the value of the environment variable GIT_OBJECT_DIRECTORY, if set). When introducing the core.hooksPath setting, we forgot to adjust git_path() accordingly. This patch fixes that. While at it, revert the special-casing of core.hooksPath in run-command.c, as it is now no longer needed. Signed-off-by: Johannes Schindelin <johannes.schindelin@gmx.de> Signed-off-by: Junio C Hamano <gitster@pobox.com>
2016-08-08Merge branch 'rs/use-strbuf-addbuf' into maintLibravatar Junio C Hamano1-1/+1
Code cleanup. * rs/use-strbuf-addbuf: strbuf: avoid calling strbuf_grow() twice in strbuf_addbuf() use strbuf_addbuf() for appending a strbuf to another
2016-07-25Merge branch 'rs/use-strbuf-addbuf'Libravatar Junio C Hamano1-1/+1
Code cleanup. * rs/use-strbuf-addbuf: strbuf: avoid calling strbuf_grow() twice in strbuf_addbuf() use strbuf_addbuf() for appending a strbuf to another
2016-07-19use strbuf_addbuf() for appending a strbuf to anotherLibravatar René Scharfe1-1/+1
Use strbuf_addbuf() where possible; it's shorter and more efficient. Signed-off-by: Rene Scharfe <l.s.r@web.de> Signed-off-by: Junio C Hamano <gitster@pobox.com>
2016-05-23Merge branch 'nd/worktree-various-heads'Libravatar Junio C Hamano1-6/+47
The experimental "multiple worktree" feature gains more safety to forbid operations on a branch that is checked out or being actively worked on elsewhere, by noticing that e.g. it is being rebased. * nd/worktree-various-heads: branch: do not rename a branch under bisect or rebase worktree.c: check whether branch is bisected in another worktree wt-status.c: split bisect detection out of wt_status_get_state() worktree.c: check whether branch is rebased in another worktree worktree.c: avoid referencing to worktrees[i] multiple times wt-status.c: make wt_status_check_rebase() work on any worktree wt-status.c: split rebase detection out of wt_status_get_state() path.c: refactor and add worktree_git_path() worktree.c: mark current worktree worktree.c: make find_shared_symref() return struct worktree * worktree.c: store "id" instead of "git_dir" path.c: add git_common_path() and strbuf_git_common_path() dir.c: rename str(n)cmp_icase to fspath(n)cmp
2016-05-17Merge branch 'lp/typofixes'Libravatar Junio C Hamano1-1/+1
* lp/typofixes: typofix: assorted typofixes in comments, documentation and messages
2016-05-06typofix: assorted typofixes in comments, documentation and messagesLibravatar Li Peng1-1/+1
Many instances of duplicate words (e.g. "the the path") and a few typoes are fixed, originally in multiple patches. wildmatch: fix duplicate words of "the" t: fix duplicate words of "output" transport-helper: fix duplicate words of "read" Git.pm: fix duplicate words of "return" path: fix duplicate words of "look" pack-protocol.txt: fix duplicate words of "the" precompose-utf8: fix typo of "sequences" split-index: fix typo worktree.c: fix typo remote-ext: fix typo utf8: fix duplicate words of "the" git-cvsserver: fix duplicate words Signed-off-by: Li Peng <lip@dtdream.com> Signed-off-by: Junio C Hamano <gitster@pobox.com>
2016-04-22path.c: refactor and add worktree_git_path()Libravatar Nguyễn Thái Ngọc Duy1-6/+18
do_git_path(), which is the common code for all git_path* functions, is modified to take a worktree struct and can produce paths for any worktree. worktree_git_path() is the first function that makes use of this. It can be used to write code that can examine any worktree. For example, wt_status_get_state() will be converted using this to take am/rebase/... state of any worktree. Signed-off-by: Nguyễn Thái Ngọc Duy <pclouds@gmail.com> Signed-off-by: Junio C Hamano <gitster@pobox.com>
2016-04-22path.c: add git_common_path() and strbuf_git_common_path()Libravatar Nguyễn Thái Ngọc Duy1-0/+29
These are mostly convenient functions to reduce code duplication. Most of the time, we should be able to get by with git_path() which handles $GIT_COMMON_DIR internally. However there are a few cases where we need to construct paths manually, for example some paths from a specific worktree. These functions will enable that. Signed-off-by: Nguyễn Thái Ngọc Duy <pclouds@gmail.com> Signed-off-by: Junio C Hamano <gitster@pobox.com>
2016-04-13Merge branch 'jk/check-repository-format'Libravatar Junio C Hamano1-5/+5
The repository set-up sequence has been streamlined (the biggest change is that there is no longer git_config_early()), so that we do not attempt to look into refs/* when we know we do not have a Git repository. * jk/check-repository-format: verify_repository_format: mark messages for translation setup: drop repository_format_version global setup: unify repository version callbacks init: use setup.c's repo version verification setup: refactor repo format reading and verification config: drop git_config_early check_repository_format_gently: stop using git_config_early lazily load core.sharedrepository wrap shared_repository global in get/set accessors setup: document check_repository_format()
2016-03-23config --show-origin: report paths with forward slashesLibravatar Johannes Schindelin1-0/+3
On Windows, the backslash is the native directory separator, but all supported Windows versions also accept the forward slash in most circumstances. Our tests expect forward slashes. Relative paths are generated by Git using forward slashes. So let's try to be consistent and use forward slashes in the $HOME part of the paths reported by `git config --show-origin`, too. Signed-off-by: Johannes Schindelin <johannes.schindelin@gmx.de> Signed-off-by: Junio C Hamano <gitster@pobox.com>
2016-03-11wrap shared_repository global in get/set accessorsLibravatar Jeff King1-5/+5
It would be useful to control access to the global shared_repository, so that we can lazily load its config. The first step to doing so is to make sure all access goes through a set of functions. This step is purely mechanical, and should result in no change of behavior. Signed-off-by: Jeff King <peff@peff.net> Signed-off-by: Junio C Hamano <gitster@pobox.com>
2016-02-03Merge branch 'js/dirname-basename'Libravatar Junio C Hamano1-9/+5
dirname() emulation has been added, as Msys2 lacks it. * js/dirname-basename: mingw: avoid linking to the C library's isalpha() t0060: loosen overly strict expectations t0060: verify that basename() and dirname() work as expected compat/basename.c: provide a dirname() compatibility function compat/basename: make basename() conform to POSIX Refactor skipping DOS drive prefixes
2016-01-12Refactor skipping DOS drive prefixesLibravatar Johannes Schindelin1-9/+5
Junio noticed that there is an implicit assumption in pretty much all the code calling has_dos_drive_prefix(): it forces all of its callsites to hardcode the knowledge that the DOS drive prefix is always two bytes long. While this assumption is pretty safe, we can still make the code more readable and less error-prone by introducing a function that skips the DOS drive prefix safely. While at it, we change the has_dos_drive_prefix() return value: it now returns the number of bytes to be skipped if there is a DOS drive prefix. Signed-off-by: Johannes Schindelin <johannes.schindelin@gmx.de> Signed-off-by: Junio C Hamano <gitster@pobox.com>
2015-12-08Merge branch 'dt/refs-backend-pre-vtable'Libravatar Junio C Hamano1-0/+12
Code preparation for pluggable ref backends. * dt/refs-backend-pre-vtable: refs: break out ref conflict checks files_log_ref_write: new function initdb: make safe_create_dir public refs: split filesystem-based refs code into a new file refs/refs-internal.h: new header file refname_is_safe(): improve docstring pack_if_possible_fn(): use ref_type() instead of is_per_worktree_ref() copy_msg(): rename to copy_reflog_msg() verify_refname_available(): new function verify_refname_available(): rename function
2015-12-04Merge branch 'dk/gc-idx-wo-pack' into maintLibravatar Junio C Hamano1-1/+1
Having a leftover .idx file without corresponding .pack file in the repository hurts performance; "git gc" learned to prune them. We may want to do the same for .bitmap (and notice but not prune .keep) without corresponding .pack, but that can be a separate topic. * dk/gc-idx-wo-pack: gc: remove garbage .idx files from pack dir t5304: test cleaning pack garbage prepare_packed_git(): refactor garbage reporting in pack directory
2015-11-20Merge branch 'dk/gc-idx-wo-pack'Libravatar Jeff King1-1/+1
Having a leftover .idx file without corresponding .pack file in the repository hurts performance; "git gc" learned to prune them. * dk/gc-idx-wo-pack: gc: remove garbage .idx files from pack dir t5304: test cleaning pack garbage prepare_packed_git(): refactor garbage reporting in pack directory
2015-11-20initdb: make safe_create_dir publicLibravatar David Turner1-0/+12
Soon we will want to create initdb functions for ref backends, and code from initdb that calls this function needs to move into the files backend. So this function needs to be public. Signed-off-by: David Turner <dturner@twopensource.com> Signed-off-by: Junio C Hamano <gitster@pobox.com> Signed-off-by: Michael Haggerty <mhagger@alum.mit.edu> Signed-off-by: Jeff King <peff@peff.net>
2015-11-05Merge branch 'nd/clone-linked-checkout' into maintLibravatar Junio C Hamano1-5/+9
It was not possible to use a repository-lookalike created by "git worktree add" as a local source of "git clone". * nd/clone-linked-checkout: clone: better error when --reference is a linked checkout clone: allow --local from a linked checkout enter_repo: allow .git files in strict mode enter_repo: avoid duplicating logic, use is_git_directory() instead t0002: add test for enter_repo(), non-strict mode path.c: delete an extra space
2015-11-03Merge branch 'mk/submodule-gitdir-path' into maintLibravatar Junio C Hamano1-4/+18
The submodule code has been taught to work better with separate work trees created via "git worktree add". * mk/submodule-gitdir-path: path: implement common_dir handling in git_pathdup_submodule() submodule refactor: use strbuf_git_path_submodule() in add_submodule_odb()
2015-10-20Merge branch 'jk/war-on-sprintf'Libravatar Junio C Hamano1-34/+46
Many allocations that is manually counted (correctly) that are followed by strcpy/sprintf have been replaced with a less error prone constructs such as xstrfmt. Macintosh-specific breakage was noticed and corrected in this reroll. * jk/war-on-sprintf: (70 commits) name-rev: use strip_suffix to avoid magic numbers use strbuf_complete to conditionally append slash fsck: use for_each_loose_file_in_objdir Makefile: drop D_INO_IN_DIRENT build knob fsck: drop inode-sorting code convert strncpy to memcpy notes: document length of fanout path with a constant color: add color_set helper for copying raw colors prefer memcpy to strcpy help: clean up kfmclient munging receive-pack: simplify keep_arg computation avoid sprintf and strcpy with flex arrays use alloc_ref rather than hand-allocating "struct ref" color: add overflow checks for parsing colors drop strcpy in favor of raw sha1_to_hex use sha1_to_hex_r() instead of strcpy daemon: use cld->env_array when re-spawning stat_tracking_info: convert to argv_array http-push: use an argv_array for setup_revisions fetch-pack: use argv_array for index-pack / unpack-objects ...
2015-10-16Merge branch 'rd/test-path-utils'Libravatar Junio C Hamano1-0/+5
The normalize_ceiling_entry() function does not muck with the end of the path it accepts, and the real world callers do rely on that, but a test insisted that the function drops a trailing slash. * rd/test-path-utils: test-path-utils.c: remove incorrect assumption
2015-10-15Merge branch 'nd/clone-linked-checkout'Libravatar Junio C Hamano1-4/+8
It was not possible to use a repository-lookalike created by "git worktree add" as a local source of "git clone". * nd/clone-linked-checkout: clone: better error when --reference is a linked checkout clone: allow --local from a linked checkout enter_repo: allow .git files in strict mode enter_repo: avoid duplicating logic, use is_git_directory() instead t0002: add test for enter_repo(), non-strict mode path.c: delete an extra space
2015-10-15Merge branch 'mk/submodule-gitdir-path'Libravatar Junio C Hamano1-4/+17
The submodule code has been taught to work better with separate work trees created via "git worktree add". * mk/submodule-gitdir-path: path: implement common_dir handling in git_pathdup_submodule() submodule refactor: use strbuf_git_path_submodule() in add_submodule_odb()
2015-10-08test-path-utils.c: remove incorrect assumptionLibravatar Ray Donnelly1-0/+5
In normalize_ceiling_entry(), we test that normalized paths end with slash, *unless* the path to be normalized was already the root directory. However, normalize_path_copy() does not even enforce this condition. Even worse: on Windows, the root directory gets translated into a Windows directory by the Bash before being passed to `git.exe` (or `test-path-utils.exe`), which means that we cannot even know whether the path that was passed to us was the root directory to begin with. This issue has already caused endless hours of trying to "fix" the MSYS2 runtime, only to break other things due to MSYS2 ensuring that the converted path maintains the same state as the input path with respect to any final '/'. So let's just forget about this test. It is non-essential to Git's operation, anyway. Acked-by: Johannes Schindelin <johannes.schindelin@gmx.de> Signed-off-by: Ray Donnelly <mingw.android@gmail.com>
2015-10-05use strbuf_complete to conditionally append slashLibravatar Jeff King1-2/+1
When working with paths in strbufs, we frequently want to ensure that a directory contains a trailing slash before appending to it. We can shorten this code (and make the intent more obvious) by calling strbuf_complete. Most of these cases are trivially identical conversions, but there are two things to note: - in a few cases we did not check that the strbuf is non-empty (which would lead to an out-of-bounds memory access). These were generally not triggerable in practice, either from earlier assertions, or typically because we would have just fed the strbuf to opendir(), which would choke on an empty path. - in a few cases we indexed the buffer with "original_len" or similar, rather than the current sb->len, and it is not immediately obvious from the diff that they are the same. In all of these cases, I manually verified that the strbuf does not change between the assignment and the strbuf_complete call. This does not convert cases which look like: if (sb->len && !is_dir_sep(sb->buf[sb->len - 1])) strbuf_addch(sb, '/'); as those are obviously semantically different. Some of these cases arguably should be doing that, but that is out of scope for this change, which aims purely for cleanup with no behavior change (and at least it will make such sites easier to find and examine in the future, as we can grep for strbuf_complete). Signed-off-by: Jeff King <peff@peff.net> Signed-off-by: Junio C Hamano <gitster@pobox.com>
2015-10-05remove_leading_path: use a strbuf for internal storageLibravatar Jeff King1-4/+6
This function strcpy's directly into a PATH_MAX-sized buffer. There's only one caller, which feeds the git_dir into it, so it's not easy to trigger in practice (even if you fed a large $GIT_DIR through the environment or .git file, it would have to actually exist and be accessible on the filesystem to get to this point). We can fix it by moving to a strbuf. Signed-off-by: Jeff King <peff@peff.net> Signed-off-by: Junio C Hamano <gitster@pobox.com>
2015-10-05enter_repo: convert fixed-size buffers to strbufsLibravatar Jeff King1-28/+29
We use two PATH_MAX-sized buffers to represent the repo path, and must make sure not to overflow them. We do take care to check the lengths, but the logic is rather hard to follow, as we use several magic numbers (e.g., "PATH_MAX - 10"). And in fact you _can_ overflow the buffer if you have a ".git" file with an extremely long path in it. By switching to strbufs, these problems all go away. We do, however, retain the check that the initial input we get is no larger than PATH_MAX. This function is an entry point for untrusted repo names from the network, and it's a good idea to keep a sanity check (both to avoid allocating arbitrary amounts of memory, and also as a layer of defense against any downstream users of the names). Signed-off-by: Jeff King <peff@peff.net> Signed-off-by: Junio C Hamano <gitster@pobox.com>
2015-09-28enter_repo: allow .git files in strict modeLibravatar Nguyễn Thái Ngọc Duy1-2/+7
Strict mode is about not guessing where .git is. If the user points to a .git file, we know exactly where the target .git dir will be. This makes it possible to serve .git files as repository on the server side. This may be needed even in local clone case because transport.c code uses upload-pack for fetching remote refs. But right now the clone/transport code goes with non-strict. Signed-off-by: Nguyễn Thái Ngọc Duy <pclouds@gmail.com> Signed-off-by: Junio C Hamano <gitster@pobox.com>
2015-09-28enter_repo: avoid duplicating logic, use is_git_directory() insteadLibravatar Nguyễn Thái Ngọc Duy1-2/+1
It matters for linked checkouts where 'refs' directory won't be available in $GIT_DIR. is_git_directory() knows about $GIT_COMMON_DIR and can handle this case. Signed-off-by: Nguyễn Thái Ngọc Duy <pclouds@gmail.com> Signed-off-by: Junio C Hamano <gitster@pobox.com>