Commit graph

138 commits

Author SHA1 Message Date
Johannes Schindelin bdfef0492c Sync with 2.16.6
* maint-2.16: (31 commits)
  Git 2.16.6
  test-drop-caches: use `has_dos_drive_prefix()`
  Git 2.15.4
  Git 2.14.6
  mingw: handle `subst`-ed "DOS drives"
  mingw: refuse to access paths with trailing spaces or periods
  mingw: refuse to access paths with illegal characters
  unpack-trees: let merged_entry() pass through do_add_entry()'s errors
  quote-stress-test: offer to test quoting arguments for MSYS2 sh
  t6130/t9350: prepare for stringent Win32 path validation
  quote-stress-test: allow skipping some trials
  quote-stress-test: accept arguments to test via the command-line
  tests: add a helper to stress test argument quoting
  mingw: fix quoting of arguments
  Disallow dubiously-nested submodule git directories
  protect_ntfs: turn on NTFS protection by default
  path: also guard `.gitmodules` against NTFS Alternate Data Streams
  is_ntfs_dotgit(): speed it up
  mingw: disallow backslash characters in tree objects' file names
  path: safeguard `.git` against NTFS Alternate Streams Accesses
  ...
2019-12-06 16:27:36 +01:00
Johannes Schindelin 9ac92fed5b Sync with 2.15.4
* maint-2.15: (29 commits)
  Git 2.15.4
  Git 2.14.6
  mingw: handle `subst`-ed "DOS drives"
  mingw: refuse to access paths with trailing spaces or periods
  mingw: refuse to access paths with illegal characters
  unpack-trees: let merged_entry() pass through do_add_entry()'s errors
  quote-stress-test: offer to test quoting arguments for MSYS2 sh
  t6130/t9350: prepare for stringent Win32 path validation
  quote-stress-test: allow skipping some trials
  quote-stress-test: accept arguments to test via the command-line
  tests: add a helper to stress test argument quoting
  mingw: fix quoting of arguments
  Disallow dubiously-nested submodule git directories
  protect_ntfs: turn on NTFS protection by default
  path: also guard `.gitmodules` against NTFS Alternate Data Streams
  is_ntfs_dotgit(): speed it up
  mingw: disallow backslash characters in tree objects' file names
  path: safeguard `.git` against NTFS Alternate Streams Accesses
  clone --recurse-submodules: prevent name squatting on Windows
  is_ntfs_dotgit(): only verify the leading segment
  ...
2019-12-06 16:27:18 +01:00
Johannes Schindelin d3ac8c3f27 Sync with 2.14.6
* maint-2.14: (28 commits)
  Git 2.14.6
  mingw: handle `subst`-ed "DOS drives"
  mingw: refuse to access paths with trailing spaces or periods
  mingw: refuse to access paths with illegal characters
  unpack-trees: let merged_entry() pass through do_add_entry()'s errors
  quote-stress-test: offer to test quoting arguments for MSYS2 sh
  t6130/t9350: prepare for stringent Win32 path validation
  quote-stress-test: allow skipping some trials
  quote-stress-test: accept arguments to test via the command-line
  tests: add a helper to stress test argument quoting
  mingw: fix quoting of arguments
  Disallow dubiously-nested submodule git directories
  protect_ntfs: turn on NTFS protection by default
  path: also guard `.gitmodules` against NTFS Alternate Data Streams
  is_ntfs_dotgit(): speed it up
  mingw: disallow backslash characters in tree objects' file names
  path: safeguard `.git` against NTFS Alternate Streams Accesses
  clone --recurse-submodules: prevent name squatting on Windows
  is_ntfs_dotgit(): only verify the leading segment
  test-path-utils: offer to run a protectNTFS/protectHFS benchmark
  ...
2019-12-06 16:26:55 +01:00
Johannes Schindelin a8dee3ca61 Disallow dubiously-nested submodule git directories
Currently it is technically possible to let a submodule's git
directory point right into the git dir of a sibling submodule.

Example: the git directories of two submodules with the names `hippo`
and `hippo/hooks` would be `.git/modules/hippo/` and
`.git/modules/hippo/hooks/`, respectively, but the latter is already
intended to house the former's hooks.

In most cases, this is just confusing, but there is also a (quite
contrived) attack vector where Git can be fooled into mistaking remote
content for file contents it wrote itself during a recursive clone.

Let's plug this bug.

To do so, we introduce the new function `validate_submodule_git_dir()`
which simply verifies that no git dir exists for any leading directories
of the submodule name (if there are any).

Note: this patch specifically continues to allow sibling modules names
of the form `core/lib`, `core/doc`, etc, as long as `core` is not a
submodule name.

This fixes CVE-2019-1387.

Reported-by: Nicolas Joly <Nicolas.Joly@microsoft.com>
Signed-off-by: Johannes Schindelin <johannes.schindelin@gmx.de>
2019-12-05 15:36:51 +01:00
Johannes Schindelin 0060fd1511 clone --recurse-submodules: prevent name squatting on Windows
In addition to preventing `.git` from being tracked by Git, on Windows
we also have to prevent `git~1` from being tracked, as the default NTFS
short name (also known as the "8.3 filename") for the file name `.git`
is `git~1`, otherwise it would be possible for malicious repositories to
write directly into the `.git/` directory, e.g. a `post-checkout` hook
that would then be executed _during_ a recursive clone.

When we implemented appropriate protections in 2b4c6efc82 (read-cache:
optionally disallow NTFS .git variants, 2014-12-16), we had analyzed
carefully that the `.git` directory or file would be guaranteed to be
the first directory entry to be written. Otherwise it would be possible
e.g. for a file named `..git` to be assigned the short name `git~1` and
subsequently, the short name generated for `.git` would be `git~2`. Or
`git~3`. Or even `~9999999` (for a detailed explanation of the lengths
we have to go to protect `.gitmodules`, see the commit message of
e7cb0b4455 (is_ntfs_dotgit: match other .git files, 2018-05-11)).

However, by exploiting two issues (that will be addressed in a related
patch series close by), it is currently possible to clone a submodule
into a non-empty directory:

- On Windows, file names cannot end in a space or a period (for
  historical reasons: the period separating the base name from the file
  extension was not actually written to disk, and the base name/file
  extension was space-padded to the full 8/3 characters, respectively).
  Helpfully, when creating a directory under the name, say, `sub.`, that
  trailing period is trimmed automatically and the actual name on disk
  is `sub`.

  This means that while Git thinks that the submodule names `sub` and
  `sub.` are different, they both access `.git/modules/sub/`.

- While the backslash character is a valid file name character on Linux,
  it is not so on Windows. As Git tries to be cross-platform, it
  therefore allows backslash characters in the file names stored in tree
  objects.

  Which means that it is totally possible that a submodule `c` sits next
  to a file `c\..git`, and on Windows, during recursive clone a file
  called `..git` will be written into `c/`, of course _before_ the
  submodule is cloned.

Note that the actual exploit is not quite as simple as having a
submodule `c` next to a file `c\..git`, as we have to make sure that the
directory `.git/modules/b` already exists when the submodule is checked
out, otherwise a different code path is taken in `module_clone()` that
does _not_ allow a non-empty submodule directory to exist already.

Even if we will address both issues nearby (the next commit will
disallow backslash characters in tree entries' file names on Windows,
and another patch will disallow creating directories/files with trailing
spaces or periods), it is a wise idea to defend in depth against this
sort of attack vector: when submodules are cloned recursively, we now
_require_ the directory to be empty, addressing CVE-2019-1349.

Note: the code path we patch is shared with the code path of `git
submodule update --init`, which must not expect, in general, that the
directory is empty. Hence we have to introduce the new option
`--force-init` and hand it all the way down from `git submodule` to the
actual `git submodule--helper` process that performs the initial clone.

Reported-by: Nicolas Joly <Nicolas.Joly@microsoft.com>
Signed-off-by: Johannes Schindelin <johannes.schindelin@gmx.de>
2019-12-04 13:20:05 +01:00
Junio C Hamano e43aab778c Sync with 2.16.5
* maint-2.16:
  Git 2.16.5
  Git 2.15.3
  Git 2.14.5
  submodule-config: ban submodule paths that start with a dash
  submodule-config: ban submodule urls that start with dash
  submodule--helper: use "--" to signal end of clone options
2018-09-27 11:41:02 -07:00
Junio C Hamano 424aac653a Sync with 2.15.3
* maint-2.15:
  Git 2.15.3
  Git 2.14.5
  submodule-config: ban submodule paths that start with a dash
  submodule-config: ban submodule urls that start with dash
  submodule--helper: use "--" to signal end of clone options
2018-09-27 11:35:43 -07:00
Junio C Hamano 902df9f5c4 Sync with Git 2.14.4
* maint-2.14:
  Git 2.14.5
  submodule-config: ban submodule paths that start with a dash
  submodule-config: ban submodule urls that start with dash
  submodule--helper: use "--" to signal end of clone options
2018-09-27 11:20:22 -07:00
Jeff King 98afac7a7c submodule--helper: use "--" to signal end of clone options
When we clone a submodule, we call "git clone $url $path".
But there's nothing to say that those components can't begin
with a dash themselves, confusing git-clone into thinking
they're options. Let's pass "--" to make it clear what we
expect.

There's no test here, because it's actually quite hard to
make these names work, even with "git clone" parsing them
correctly. And we're going to restrict these cases even
further in future commits. So we'll leave off testing until
then; this is just the minimal fix to prevent us from doing
something stupid with a badly formed entry.

Reported-by: joernchen <joernchen@phenoelit.de>
Signed-off-by: Jeff King <peff@peff.net>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2018-09-27 09:34:55 -07:00
Junio C Hamano 68f95b26e4 Sync with Git 2.16.4
* maint-2.16:
  Git 2.16.4
  Git 2.15.2
  Git 2.14.4
  Git 2.13.7
  verify_path: disallow symlinks in .gitmodules
  update-index: stat updated files earlier
  verify_dotfile: mention case-insensitivity in comment
  verify_path: drop clever fallthrough
  skip_prefix: add case-insensitive variant
  is_{hfs,ntfs}_dotgitmodules: add tests
  is_ntfs_dotgit: match other .git files
  is_hfs_dotgit: match other .git files
  is_ntfs_dotgit: use a size_t for traversing string
  submodule-config: verify submodule names as paths
2018-05-22 14:25:26 +09:00
Junio C Hamano 023020401d Sync with Git 2.15.2
* maint-2.15:
  Git 2.15.2
  Git 2.14.4
  Git 2.13.7
  verify_path: disallow symlinks in .gitmodules
  update-index: stat updated files earlier
  verify_dotfile: mention case-insensitivity in comment
  verify_path: drop clever fallthrough
  skip_prefix: add case-insensitive variant
  is_{hfs,ntfs}_dotgitmodules: add tests
  is_ntfs_dotgit: match other .git files
  is_hfs_dotgit: match other .git files
  is_ntfs_dotgit: use a size_t for traversing string
  submodule-config: verify submodule names as paths
2018-05-22 14:18:06 +09:00
Junio C Hamano 9e0f06d55d Sync with Git 2.14.4
* maint-2.14:
  Git 2.14.4
  Git 2.13.7
  verify_path: disallow symlinks in .gitmodules
  update-index: stat updated files earlier
  verify_dotfile: mention case-insensitivity in comment
  verify_path: drop clever fallthrough
  skip_prefix: add case-insensitive variant
  is_{hfs,ntfs}_dotgitmodules: add tests
  is_ntfs_dotgit: match other .git files
  is_hfs_dotgit: match other .git files
  is_ntfs_dotgit: use a size_t for traversing string
  submodule-config: verify submodule names as paths
2018-05-22 14:15:14 +09:00
Junio C Hamano 7b01c71b64 Sync with Git 2.13.7
* maint-2.13:
  Git 2.13.7
  verify_path: disallow symlinks in .gitmodules
  update-index: stat updated files earlier
  verify_dotfile: mention case-insensitivity in comment
  verify_path: drop clever fallthrough
  skip_prefix: add case-insensitive variant
  is_{hfs,ntfs}_dotgitmodules: add tests
  is_ntfs_dotgit: match other .git files
  is_hfs_dotgit: match other .git files
  is_ntfs_dotgit: use a size_t for traversing string
  submodule-config: verify submodule names as paths
2018-05-22 14:10:49 +09:00
Jeff King 0383bbb901 submodule-config: verify submodule names as paths
Submodule "names" come from the untrusted .gitmodules file,
but we blindly append them to $GIT_DIR/modules to create our
on-disk repo paths. This means you can do bad things by
putting "../" into the name (among other things).

Let's sanity-check these names to avoid building a path that
can be exploited. There are two main decisions:

  1. What should the allowed syntax be?

     It's tempting to reuse verify_path(), since submodule
     names typically come from in-repo paths. But there are
     two reasons not to:

       a. It's technically more strict than what we need, as
          we really care only about breaking out of the
          $GIT_DIR/modules/ hierarchy.  E.g., having a
          submodule named "foo/.git" isn't actually
          dangerous, and it's possible that somebody has
          manually given such a funny name.

       b. Since we'll eventually use this checking logic in
          fsck to prevent downstream repositories, it should
          be consistent across platforms. Because
          verify_path() relies on is_dir_sep(), it wouldn't
          block "foo\..\bar" on a non-Windows machine.

  2. Where should we enforce it? These days most of the
     .gitmodules reads go through submodule-config.c, so
     I've put it there in the reading step. That should
     cover all of the C code.

     We also construct the name for "git submodule add"
     inside the git-submodule.sh script. This is probably
     not a big deal for security since the name is coming
     from the user anyway, but it would be polite to remind
     them if the name they pick is invalid (and we need to
     expose the name-checker to the shell anyway for our
     test scripts).

     This patch issues a warning when reading .gitmodules
     and just ignores the related config entry completely.
     This will generally end up producing a sensible error,
     as it works the same as a .gitmodules file which is
     missing a submodule entry (so "submodule update" will
     barf, but "git clone --recurse-submodules" will print
     an error but not abort the clone.

     There is one minor oddity, which is that we print the
     warning once per malformed config key (since that's how
     the config subsystem gives us the entries). So in the
     new test, for example, the user would see three
     warnings. That's OK, since the intent is that this case
     should never come up outside of malicious repositories
     (and then it might even benefit the user to see the
     message multiple times).

Credit for finding this vulnerability and the proof of
concept from which the test script was adapted goes to
Etienne Stalmans.

Signed-off-by: Jeff King <peff@peff.net>
2018-05-21 23:50:11 -04:00
Junio C Hamano 2081fa73b4 Merge branch 'pc/submodule-helper'
Hotfix.

* pc/submodule-helper:
  submodule deinit: handle non existing pathspecs gracefully
2018-03-28 11:04:25 -07:00
Stefan Beller 9748e39d0c submodule deinit: handle non existing pathspecs gracefully
This fixes a regression introduced in 2e612731b5 (submodule: port
submodule subcommand 'deinit' from shell to C, 2018-01-15), when
handling pathspecs that do not exist gracefully. This restores the
historic behavior of reporting the pathspec as unknown and returning
instead of reporting a bug.

Reported-by: Peter Oberndorfer <kumbayo84@arcor.de>
Signed-off-by: Stefan Beller <sbeller@google.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2018-03-27 22:07:13 -07:00
Junio C Hamano 7fb6aefd2a Merge branch 'nd/parseopt-completion'
Teach parse-options API an option to help the completion script,
and make use of the mechanism in command line completion.

* nd/parseopt-completion: (45 commits)
  completion: more subcommands in _git_notes()
  completion: complete --{reuse,reedit}-message= for all notes subcmds
  completion: simplify _git_notes
  completion: don't set PARSE_OPT_NOCOMPLETE on --rerere-autoupdate
  completion: use __gitcomp_builtin in _git_worktree
  completion: use __gitcomp_builtin in _git_tag
  completion: use __gitcomp_builtin in _git_status
  completion: use __gitcomp_builtin in _git_show_branch
  completion: use __gitcomp_builtin in _git_rm
  completion: use __gitcomp_builtin in _git_revert
  completion: use __gitcomp_builtin in _git_reset
  completion: use __gitcomp_builtin in _git_replace
  remote: force completing --mirror= instead of --mirror
  completion: use __gitcomp_builtin in _git_remote
  completion: use __gitcomp_builtin in _git_push
  completion: use __gitcomp_builtin in _git_pull
  completion: use __gitcomp_builtin in _git_notes
  completion: use __gitcomp_builtin in _git_name_rev
  completion: use __gitcomp_builtin in _git_mv
  completion: use __gitcomp_builtin in _git_merge_base
  ...
2018-03-14 12:01:07 -07:00
Prathamesh Chavan 2e612731b5 submodule: port submodule subcommand 'deinit' from shell to C
The same mechanism is used even for porting this submodule
subcommand, as used in the ported subcommands till now.
The function cmd_deinit in split up after porting into four
functions: module_deinit(), for_each_listed_submodule(),
deinit_submodule() and deinit_submodule_cb().

Mentored-by: Christian Couder <christian.couder@gmail.com>
Mentored-by: Stefan Beller <sbeller@google.com>
Signed-off-by: Prathamesh Chavan <pc44800@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2018-01-16 11:29:50 -08:00
Prathamesh Chavan 13424764db submodule: port submodule subcommand 'sync' from shell to C
Port the submodule subcommand 'sync' from shell to C using the same
mechanism as that used for porting submodule subcommand 'status'.
Hence, here the function cmd_sync() is ported from shell to C.
This is done by introducing four functions: module_sync(),
sync_submodule(), sync_submodule_cb() and print_default_remote().

The function print_default_remote() is introduced for getting
the default remote as stdout.

Mentored-by: Christian Couder <christian.couder@gmail.com>
Mentored-by: Stefan Beller <sbeller@google.com>
Signed-off-by: Prathamesh Chavan <pc44800@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2018-01-16 11:29:48 -08:00
Junio C Hamano 41a05ee3a6 Merge branch 'pc/submodule-helper'
A message fix.

* pc/submodule-helper:
  submodule--helper.c: i18n: add a missing space in message
2017-12-13 13:28:56 -08:00
Jean-Noel Avila ed5bdd5bab submodule--helper.c: i18n: add a missing space in message
The message spans over 2 lines but the C concatenation does not add
the needed space between the two lines.

Signed-off-by: Jean-Noel Avila <jn.avila@free.fr>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2017-11-26 12:52:17 +09:00
Junio C Hamano e7e456f500 Merge branch 'bc/object-id'
Conversion from uchar[20] to struct object_id continues.

* bc/object-id: (25 commits)
  refs/files-backend: convert static functions to object_id
  refs: convert read_raw_ref backends to struct object_id
  refs: convert peel_object to struct object_id
  refs: convert resolve_ref_unsafe to struct object_id
  worktree: convert struct worktree to object_id
  refs: convert resolve_gitlink_ref to struct object_id
  Convert remaining callers of resolve_gitlink_ref to object_id
  sha1_file: convert index_path and index_fd to struct object_id
  refs: convert reflog_expire parameter to struct object_id
  refs: convert read_ref_at to struct object_id
  refs: convert peel_ref to struct object_id
  builtin/pack-objects: convert to struct object_id
  pack-bitmap: convert traverse_bitmap_commit_list to object_id
  refs: convert dwim_log to struct object_id
  builtin/reflog: convert remaining unsigned char uses to object_id
  refs: convert dwim_ref and expand_ref to struct object_id
  refs: convert read_ref and read_ref_full to object_id
  refs: convert resolve_refdup and refs_resolve_refdup to struct object_id
  Convert check_connected to use struct object_id
  refs: update ref transactions to use struct object_id
  ...
2017-11-06 14:24:27 +09:00
Junio C Hamano a1bf46ed9d Merge branch 'pc/submodule-helper'
GSoC.

* pc/submodule-helper:
  submodule: port submodule subcommand 'status' from shell to C
  submodule--helper: introduce for_each_listed_submodule()
  submodule--helper: introduce get_submodule_displaypath()
2017-11-06 14:24:23 +09:00
brian m. carlson 0f2dc722dd refs: convert resolve_refdup and refs_resolve_refdup to struct object_id
All of the callers already pass the hash member of struct object_id, so
update them to pass a pointer to the struct directly,

This transformation was done with an update to declaration and
definition and the following semantic patch:

@@
expression E1, E2, E3, E4;
@@
- resolve_refdup(E1, E2, E3.hash, E4)
+ resolve_refdup(E1, E2, &E3, E4)

@@
expression E1, E2, E3, E4;
@@
- resolve_refdup(E1, E2, E3->hash, E4)
+ resolve_refdup(E1, E2, E3, E4)

Signed-off-by: brian m. carlson <sandals@crustytoothpaste.net>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2017-10-16 11:05:50 +09:00
Prathamesh Chavan a9f8a37584 submodule: port submodule subcommand 'status' from shell to C
This aims to make git-submodule 'status' a built-in. Hence, the function
cmd_status() is ported from shell to C. This is done by introducing
four functions: module_status(), submodule_status_cb(),
submodule_status() and print_status().

The function module_status() acts as the front-end of the subcommand.
It parses subcommand's options and then calls the function
module_list_compute() for computing the list of submodules. Then
this functions calls for_each_listed_submodule() looping through the
list obtained.

Then for_each_listed_submodule() calls submodule_status_cb() for each of
the submodule in its list. The function submodule_status_cb() calls
submodule_status() after passing appropriate arguments to the funciton.
Function submodule_status() is responsible for generating the status
each submodule it is called for, and then calls print_status().

Finally, the function print_status() handles the printing of submodule's
status.

Function set_name_rev() is also ported from git-submodule to the
submodule--helper builtin function compute_rev_name(), which now
generates the value of the revision name as required.

Mentored-by: Christian Couder <christian.couder@gmail.com>
Mentored-by: Stefan Beller <sbeller@google.com>
Signed-off-by: Prathamesh Chavan <pc44800@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2017-10-07 17:52:35 +09:00
Prathamesh Chavan 9f580a6260 submodule--helper: introduce for_each_listed_submodule()
Introduce function for_each_listed_submodule() and replace a loop
in module_init() with a call to it.

The new function will also be used in other parts of the
system in later patches.

Mentored-by: Christian Couder <christian.couder@gmail.com>
Mentored-by: Stefan Beller <sbeller@google.com>
Signed-off-by: Prathamesh Chavan <pc44800@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2017-10-07 17:52:35 +09:00
Prathamesh Chavan 74a10642aa submodule--helper: introduce get_submodule_displaypath()
Introduce function get_submodule_displaypath() to replace the code
occurring in submodule_init() for generating displaypath of the
submodule with a call to it.

This new function will also be used in other parts of the system
in later patches.

Mentored-by: Christian Couder <christian.couder@gmail.com>
Mentored-by: Stefan Beller <sbeller@google.com>
Signed-off-by: Prathamesh Chavan <pc44800@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2017-10-02 09:35:35 +09:00
Junio C Hamano 73ecdc606e Merge branch 'rs/resolve-ref-optional-result'
Code clean-up.

* rs/resolve-ref-optional-result:
  refs: pass NULL to resolve_ref_unsafe() if hash is not needed
  refs: pass NULL to refs_resolve_ref_unsafe() if hash is not needed
  refs: make sha1 output parameter of refs_resolve_ref_unsafe() optional
2017-09-28 14:47:56 +09:00
René Scharfe 744c040b19 refs: pass NULL to resolve_ref_unsafe() if hash is not needed
This allows us to get rid of some write-only variables, among them seven
SHA1 buffers.

Signed-off-by: Rene Scharfe <l.s.r@web.de>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2017-09-24 10:18:21 +09:00
Jeff King 1cf01a34ea consistently use "fallthrough" comments in switches
Gcc 7 adds -Wimplicit-fallthrough, which can warn when a
switch case falls through to the next case. The general idea
is that the compiler can't tell if this was intentional or
not, so you should annotate any intentional fall-throughs as
such, leaving it to complain about any unannotated ones.

There's a GNU __attribute__ which can be used for
annotation, but of course we'd have to #ifdef it away on
non-gcc compilers. Gcc will also recognize
specially-formatted comments, which matches our current
practice. Let's extend that practice to all of the
unannotated sites (which I did look over and verify that
they were behaving as intended).

Ideally in each case we'd actually give some reasons in the
comment about why we're falling through, or what we're
falling through to. And gcc does support that with
-Wimplicit-fallthrough=2, which relaxes the comment pattern
matching to anything that contains "fallthrough" (or a
variety of spelling variants). However, this isn't the
default for -Wimplicit-fallthrough, nor for -Wextra. In the
name of simplicity, it's probably better for us to support
the default level, which requires "fallthrough" to be the
only thing in the comment (modulo some window dressing like
"else" and some punctuation; see the gcc manual for the
complete set of patterns).

This patch suppresses all warnings due to
-Wimplicit-fallthrough. We might eventually want to add that
to the DEVELOPER Makefile knob, but we should probably wait
until gcc 7 is more widely adopted (since earlier versions
will complain about the unknown warning type).

Signed-off-by: Jeff King <peff@peff.net>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2017-09-22 12:49:57 +09:00
Junio C Hamano eba2a68f25 Merge branch 'bw/push-options-recursively-to-submodules' into maint
"git push --recurse-submodules $there HEAD:$target" was not
propagated down to the submodules, but now it is.

* bw/push-options-recursively-to-submodules:
  submodule--helper: teach push-check to handle HEAD
2017-09-10 17:02:49 +09:00
Junio C Hamano 614ea03a71 Merge branch 'bw/submodule-config-cleanup'
Code clean-up to avoid mixing values read from the .gitmodules file
and values read from the .git/config file.

* bw/submodule-config-cleanup:
  submodule: remove gitmodules_config
  unpack-trees: improve loading of .gitmodules
  submodule-config: lazy-load a repository's .gitmodules file
  submodule-config: move submodule-config functions to submodule-config.c
  submodule-config: remove support for overlaying repository config
  diff: stop allowing diff to have submodules configured in .git/config
  submodule: remove submodule_config callback routine
  unpack-trees: don't respect submodule.update
  submodule: don't rely on overlayed config when setting diffopts
  fetch: don't overlay config with submodule-config
  submodule--helper: don't overlay config in update-clone
  submodule--helper: don't overlay config in remote_submodule_branch
  add, reset: ensure submodules can be added or reset
  submodule: don't use submodule_from_name
  t7411: check configuration parsing errors
2017-08-26 22:55:08 -07:00
Junio C Hamano 0869277033 Merge branch 'js/run-process-parallel-api-fix' into maint
API fix.

* js/run-process-parallel-api-fix:
  run_processes_parallel: change confusing task_cb convention
2017-08-23 14:33:49 -07:00
Junio C Hamano 5aa0b6c506 Merge branch 'bw/grep-recurse-submodules'
"git grep --recurse-submodules" has been reworked to give a more
consistent output across submodule boundary (and do its thing
without having to fork a separate process).

* bw/grep-recurse-submodules:
  grep: recurse in-process using 'struct repository'
  submodule: merge repo_read_gitmodules and gitmodules_config
  submodule: check for unmerged .gitmodules outside of config parsing
  submodule: check for unstaged .gitmodules outside of config parsing
  submodule: remove fetch.recursesubmodules from submodule-config parsing
  submodule: remove submodule.fetchjobs from submodule-config parsing
  config: add config_from_gitmodules
  cache.h: add GITMODULES_FILE macro
  repository: have the_repository use the_index
  repo_read_index: don't discard the index
2017-08-22 10:29:01 -07:00
Junio C Hamano a49794d108 Merge branch 'bw/push-options-recursively-to-submodules'
"git push --recurse-submodules $there HEAD:$target" was not
propagated down to the submodules, but now it is.

* bw/push-options-recursively-to-submodules:
  submodule--helper: teach push-check to handle HEAD
2017-08-22 10:29:00 -07:00
Junio C Hamano 4a636e7682 Merge branch 'js/run-process-parallel-api-fix'
API fix.

* js/run-process-parallel-api-fix:
  run_processes_parallel: change confusing task_cb convention
2017-08-11 13:27:02 -07:00
Brandon Williams 557a5998df submodule: remove gitmodules_config
Now that the submodule-config subsystem can lazily read the gitmodules
file we no longer need to explicitly pre-read the gitmodules by calling
'gitmodules_config()' so let's remove it.

Signed-off-by: Brandon Williams <bmwill@google.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2017-08-03 13:11:02 -07:00
Brandon Williams 2cc67fe54a submodule: remove submodule_config callback routine
Remove the last remaining caller of 'submodule_config()' as well as the
function itself.

With 'submodule_config()' being removed the submodule-config API can be
a little simpler as callers don't need to worry about whether or not
they need to overlay the repository's config on top of the
submodule-config.  This also makes it more difficult to accidentally
add non-submodule specific configuration to the .gitmodules file.

Signed-off-by: Brandon Williams <bmwill@google.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2017-08-03 13:11:01 -07:00
Brandon Williams ec6141a0f2 submodule--helper: don't overlay config in update-clone
Don't rely on overlaying the repository's config on top of the
submodule-config, instead query the repository's config directly for the
url and the update strategy configuration.

Signed-off-by: Brandon Williams <bmwill@google.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2017-08-03 13:11:01 -07:00
Brandon Williams 177257ccc7 submodule--helper: don't overlay config in remote_submodule_branch
Don't rely on overlaying the repository's config on top of the
submodule-config, instead query the repository's config directly for the
branch field.

Signed-off-by: Brandon Williams <bmwill@google.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2017-08-03 13:11:01 -07:00
Junio C Hamano a46ddc992b Merge branch 'bc/object-id' into bw/submodule-config-cleanup
* bc/object-id:
  sha1_name: convert uses of 40 to GIT_SHA1_HEXSZ
  sha1_name: convert GET_SHA1* flags to GET_OID*
  sha1_name: convert get_sha1* to get_oid*
  Convert remaining callers of get_sha1 to get_oid.
  builtin/unpack-file: convert to struct object_id
  bisect: convert bisect_checkout to struct object_id
  builtin/update_ref: convert to struct object_id
  sequencer: convert to struct object_id
  remote: convert struct push_cas to struct object_id
  submodule: convert submodule config lookup to use object_id
  builtin/merge-tree: convert remaining caller of get_sha1 to object_id
  builtin/fsck: convert remaining caller of get_sha1 to object_id
  tag: convert gpg_verify_tag to use struct object_id
  commit: convert lookup_commit_graft to struct object_id
2017-08-02 14:34:28 -07:00
Brandon Williams f20e7c1ea2 submodule: remove submodule.fetchjobs from submodule-config parsing
The '.gitmodules' file should only contain information pertinent to
configuring individual submodules (name to path mapping, URL where to
obtain the submodule, etc.) while other configuration like the number of
jobs to use when fetching submodules should be a part of the
repository's config.

Remove the 'submodule.fetchjobs' configuration option from the general
submodule-config parsing and instead rely on using the
'config_from_gitmodules()' in order to maintain backwards compatibility
with this config being placed in the '.gitmodules' file.

Signed-off-by: Brandon Williams <bmwill@google.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2017-08-02 14:26:46 -07:00
Johannes Schindelin c1e860f1dc run_processes_parallel: change confusing task_cb convention
By declaring the task_cb parameter of type `void **`, the signature of
the get_next_task method suggests that the "task-specific cookie" can be
defined in that method, and the signatures of the start_failure and of
the task_finished methods declare that parameter of type `void *`,
suggesting that those methods are mere users of said cookie.

That convention makes a total lot of sense, because the tasks are pretty
much dead when one of the latter two methods is called: there would be
little use to reset that cookie at that point because nobody would be
able to see the change afterwards.

However, this is not what the code actually does. For all three methods,
it passes the *address* of pp->children[i].data.

As reasoned above, this behavior makes no sense. So let's change the
implementation to adhere to the convention suggested by the signatures.

Signed-off-by: Johannes Schindelin <johannes.schindelin@gmx.de>
Acked-by: Stefan Beller <sbeller@google.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2017-07-21 11:58:46 -07:00
Brandon Williams c7be7201a7 submodule--helper: teach push-check to handle HEAD
In 06bf4ad1d (push: propagate remote and refspec with
--recurse-submodules) push was taught how to propagate a refspec down to
submodules when the '--recurse-submodules' flag is given.  The only refspecs
that are allowed to be propagated are ones which name a ref which exists
in both the superproject and the submodule, with the caveat that 'HEAD'
was disallowed.

This patch teaches push-check (the submodule helper which determines if
a refspec can be propagated to a submodule) to permit propagating 'HEAD'
if and only if the superproject and the submodule both have the same
named branch checked out and the submodule is not in a detached head
state.

Signed-off-by: Brandon Williams <bmwill@google.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2017-07-20 14:58:26 -07:00
brian m. carlson cd73de4714 submodule: convert submodule config lookup to use object_id
Signed-off-by: brian m. carlson <sandals@crustytoothpaste.net>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2017-07-17 13:54:37 -07:00
Junio C Hamano 127c13aa41 Merge branch 'jc/utf8-fprintf' into maint
Code cleanup.

* jc/utf8-fprintf:
  submodule--helper: do not call utf8_fprintf() unnecessarily
2017-07-10 13:59:09 -07:00
Junio C Hamano 62458ea333 Merge branch 'jc/utf8-fprintf'
Code cleanup.

* jc/utf8-fprintf:
  submodule--helper: do not call utf8_fprintf() unnecessarily
2017-07-06 18:14:44 -07:00
Junio C Hamano dc4b4a61ba submodule--helper: do not call utf8_fprintf() unnecessarily
The helper function utf8_fprintf(fp, ...) has exactly the same
effect to the output stream fp as fprintf(fp, ...) does, and the
only difference is that its return value counts in display columns
consumed (assuming that the payload is encoded in UTF-8), as opposed
to number of bytes.

There is no reason to call it unless the caller cares about its
return value.

Signed-off-by: Junio C Hamano <gitster@pobox.com>
2017-06-28 14:27:10 -07:00
Brandon Williams 627d9342fe submodule: convert is_submodule_initialized to work on a repository
Convert 'is_submodule_initialized()' to take a repository object and
while we're at it, lets rename the function to 'is_submodule_active()'
and remove the NEEDSWORK comment.

Signed-off-by: Brandon Williams <bmwill@google.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2017-06-23 18:24:34 -07:00
Junio C Hamano 25bf951381 Merge branches 'bw/ls-files-sans-the-index' and 'bw/config-h' into bw/repo-object
* bw/ls-files-sans-the-index:
  ls-files: factor out tag calculation
  ls-files: factor out debug info into a function
  ls-files: convert show_files to take an index
  ls-files: convert show_ce_entry to take an index
  ls-files: convert prune_cache to take an index
  ls-files: convert ce_excluded to take an index
  ls-files: convert show_ru_info to take an index
  ls-files: convert show_other_files to take an index
  ls-files: convert show_killed_files to take an index
  ls-files: convert write_eolinfo to take an index
  ls-files: convert overlay_tree_on_cache to take an index
  tree: convert read_tree to take an index parameter
  convert: convert renormalize_buffer to take an index
  convert: convert convert_to_git to take an index
  convert: convert convert_to_git_filter_fd to take an index
  convert: convert crlf_to_git to take an index
  convert: convert get_cached_convert_stats_ascii to take an index

* bw/config-h:
  config: don't implicitly use gitdir or commondir
  config: respect commondir
  setup: teach discover_git_directory to respect the commondir
  config: don't include config.h by default
  config: remove git_config_iter
  config: create config.h
  alias: use the early config machinery to expand aliases
  t7006: demonstrate a problem with aliases in subdirectories
  t1308: relax the test verifying that empty alias values are disallowed
  help: use early config when autocorrecting aliases
  config: report correct line number upon error
  discover_git_directory(): avoid setting invalid git_dir
2017-06-23 18:24:00 -07:00