diff options
| -rw-r--r-- | Documentation/git-reflog.txt | 7 | ||||
| -rw-r--r-- | Documentation/git-worktree.txt | 32 | ||||
| -rw-r--r-- | Documentation/gitrepository-layout.txt | 11 | ||||
| -rw-r--r-- | builtin/fsck.c | 68 | ||||
| -rw-r--r-- | builtin/reflog.c | 46 | ||||
| -rw-r--r-- | path.c | 2 | ||||
| -rw-r--r-- | refs.c | 24 | ||||
| -rw-r--r-- | refs.h | 8 | ||||
| -rw-r--r-- | refs/files-backend.c | 42 | ||||
| -rw-r--r-- | revision.c | 22 | ||||
| -rwxr-xr-x | t/t0060-path-utils.sh | 2 | ||||
| -rwxr-xr-x | t/t1410-reflog.sh | 15 | ||||
| -rwxr-xr-x | t/t1415-worktree-refs.sh | 79 | ||||
| -rwxr-xr-x | t/t1450-fsck.sh | 35 | ||||
| -rw-r--r-- | worktree.c | 79 | ||||
| -rw-r--r-- | worktree.h | 24 |
16 files changed, 449 insertions, 47 deletions
diff --git a/Documentation/git-reflog.txt b/Documentation/git-reflog.txt index 472a6808cd..ff487ff77d 100644 --- a/Documentation/git-reflog.txt +++ b/Documentation/git-reflog.txt @@ -20,7 +20,7 @@ depending on the subcommand: 'git reflog' ['show'] [log-options] [<ref>] 'git reflog expire' [--expire=<time>] [--expire-unreachable=<time>] [--rewrite] [--updateref] [--stale-fix] - [--dry-run | -n] [--verbose] [--all | <refs>...] + [--dry-run | -n] [--verbose] [--all [--single-worktree] | <refs>...] 'git reflog delete' [--rewrite] [--updateref] [--dry-run | -n] [--verbose] ref@\{specifier\}... 'git reflog exists' <ref> @@ -72,6 +72,11 @@ Options for `expire` --all:: Process the reflogs of all references. +--single-worktree:: + By default when `--all` is specified, reflogs from all working + trees are processed. This option limits the processing to reflogs + from the current working tree only. + --expire=<time>:: Prune entries older than the specified time. If this option is not specified, the expiration time is taken from the diff --git a/Documentation/git-worktree.txt b/Documentation/git-worktree.txt index 5e986ce8aa..cb86318f3e 100644 --- a/Documentation/git-worktree.txt +++ b/Documentation/git-worktree.txt @@ -204,6 +204,35 @@ working trees, it can be used to identify worktrees. For example if you only have two working trees, at "/abc/def/ghi" and "/abc/def/ggg", then "ghi" or "def/ghi" is enough to point to the former working tree. +REFS +---- +In multiple working trees, some refs may be shared between all working +trees, some refs are local. One example is HEAD is different for all +working trees. This section is about the sharing rules and how to access +refs of one working tree from another. + +In general, all pseudo refs are per working tree and all refs starting +with "refs/" are shared. Pseudo refs are ones like HEAD which are +directly under GIT_DIR instead of inside GIT_DIR/refs. There are one +exception to this: refs inside refs/bisect and refs/worktree is not +shared. + +Refs that are per working tree can still be accessed from another +working tree via two special paths, main-worktree and worktrees. The +former gives access to per-worktree refs of the main working tree, +while the latter to all linked working trees. + +For example, main-worktree/HEAD or main-worktree/refs/bisect/good +resolve to the same value as the main working tree's HEAD and +refs/bisect/good respectively. Similarly, worktrees/foo/HEAD or +worktrees/bar/refs/bisect/bad are the same as +GIT_COMMON_DIR/worktrees/foo/HEAD and +GIT_COMMON_DIR/worktrees/bar/refs/bisect/bad. + +To access refs, it's best not to look inside GIT_DIR directly. Instead +use commands such as linkgit:git-rev-parse[1] or linkgit:git-update-ref[1] +which will handle refs correctly. + CONFIGURATION FILE ------------------ By default, the repository "config" file is shared across all working @@ -258,7 +287,8 @@ linked working tree `git rev-parse --git-path HEAD` returns `/path/other/test-next/.git/HEAD` or `/path/main/.git/HEAD`) while `git rev-parse --git-path refs/heads/master` uses $GIT_COMMON_DIR and returns `/path/main/.git/refs/heads/master`, -since refs are shared across all working trees. +since refs are shared across all working trees, except refs/bisect and +refs/worktree. See linkgit:gitrepository-layout[5] for more information. The rule of thumb is do not make any assumption about whether a path belongs to diff --git a/Documentation/gitrepository-layout.txt b/Documentation/gitrepository-layout.txt index 36fcca8087..d501af9d77 100644 --- a/Documentation/gitrepository-layout.txt +++ b/Documentation/gitrepository-layout.txt @@ -95,8 +95,10 @@ refs:: References are stored in subdirectories of this directory. The 'git prune' command knows to preserve objects reachable from refs found in this directory and - its subdirectories. This directory is ignored if $GIT_COMMON_DIR - is set and "$GIT_COMMON_DIR/refs" will be used instead. + its subdirectories. + This directory is ignored (except refs/bisect and + refs/worktree) if $GIT_COMMON_DIR is set and + "$GIT_COMMON_DIR/refs" will be used instead. refs/heads/`name`:: records tip-of-the-tree commit objects of branch `name` @@ -170,6 +172,11 @@ hooks:: each hook. This directory is ignored if $GIT_COMMON_DIR is set and "$GIT_COMMON_DIR/hooks" will be used instead. +common:: + When multiple working trees are used, most of files in + $GIT_DIR are per-worktree with a few known exceptions. All + files under 'common' however will be shared between all + working trees. index:: The current index file for the repository. It is diff --git a/builtin/fsck.c b/builtin/fsck.c index 06eb421720..3c3e0f06e7 100644 --- a/builtin/fsck.c +++ b/builtin/fsck.c @@ -19,6 +19,7 @@ #include "packfile.h" #include "object-store.h" #include "run-command.h" +#include "worktree.h" #define REACHABLE 0x0001 #define SEEN 0x0002 @@ -36,8 +37,6 @@ static int check_strict; static int keep_cache_objects; static struct fsck_options fsck_walk_options = FSCK_OPTIONS_DEFAULT; static struct fsck_options fsck_obj_options = FSCK_OPTIONS_DEFAULT; -static struct object_id head_oid; -static const char *head_points_at; static int errors_found; static int write_lost_and_found; static int verbose; @@ -446,7 +445,11 @@ static int fsck_handle_reflog_ent(struct object_id *ooid, struct object_id *noid static int fsck_handle_reflog(const char *logname, const struct object_id *oid, int flag, void *cb_data) { - for_each_reflog_ent(logname, fsck_handle_reflog_ent, (void *)logname); + struct strbuf refname = STRBUF_INIT; + + strbuf_worktree_ref(cb_data, &refname, logname); + for_each_reflog_ent(refname.buf, fsck_handle_reflog_ent, refname.buf); + strbuf_release(&refname); return 0; } @@ -484,13 +487,34 @@ static int fsck_handle_ref(const char *refname, const struct object_id *oid, return 0; } +static int fsck_head_link(const char *head_ref_name, + const char **head_points_at, + struct object_id *head_oid); + static void get_default_heads(void) { - if (head_points_at && !is_null_oid(&head_oid)) - fsck_handle_ref("HEAD", &head_oid, 0, NULL); + struct worktree **worktrees, **p; + const char *head_points_at; + struct object_id head_oid; + for_each_rawref(fsck_handle_ref, NULL); - if (include_reflogs) - for_each_reflog(fsck_handle_reflog, NULL); + + worktrees = get_worktrees(0); + for (p = worktrees; *p; p++) { + struct worktree *wt = *p; + struct strbuf ref = STRBUF_INIT; + + strbuf_worktree_ref(wt, &ref, "HEAD"); + fsck_head_link(ref.buf, &head_points_at, &head_oid); + if (head_points_at && !is_null_oid(&head_oid)) + fsck_handle_ref(ref.buf, &head_oid, 0, NULL); + strbuf_release(&ref); + + if (include_reflogs) + refs_for_each_reflog(get_worktree_ref_store(wt), + fsck_handle_reflog, wt); + } + free_worktrees(worktrees); /* * Not having any default heads isn't really fatal, but @@ -579,33 +603,36 @@ static void fsck_object_dir(const char *path) stop_progress(&progress); } -static int fsck_head_link(void) +static int fsck_head_link(const char *head_ref_name, + const char **head_points_at, + struct object_id *head_oid) { int null_is_error = 0; if (verbose) - fprintf(stderr, "Checking HEAD link\n"); + fprintf(stderr, "Checking %s link\n", head_ref_name); - head_points_at = resolve_ref_unsafe("HEAD", 0, &head_oid, NULL); - if (!head_points_at) { + *head_points_at = resolve_ref_unsafe(head_ref_name, 0, head_oid, NULL); + if (!*head_points_at) { errors_found |= ERROR_REFS; - return error("Invalid HEAD"); + return error("Invalid %s", head_ref_name); } - if (!strcmp(head_points_at, "HEAD")) + if (!strcmp(*head_points_at, head_ref_name)) /* detached HEAD */ null_is_error = 1; - else if (!starts_with(head_points_at, "refs/heads/")) { + else if (!starts_with(*head_points_at, "refs/heads/")) { errors_found |= ERROR_REFS; - return error("HEAD points to something strange (%s)", - head_points_at); + return error("%s points to something strange (%s)", + head_ref_name, *head_points_at); } - if (is_null_oid(&head_oid)) { + if (is_null_oid(head_oid)) { if (null_is_error) { errors_found |= ERROR_REFS; - return error("HEAD: detached HEAD points at nothing"); + return error("%s: detached HEAD points at nothing", + head_ref_name); } - fprintf(stderr, "notice: HEAD points to an unborn branch (%s)\n", - head_points_at + 11); + fprintf(stderr, "notice: %s points to an unborn branch (%s)\n", + head_ref_name, *head_points_at + 11); } return 0; } @@ -720,7 +747,6 @@ int cmd_fsck(int argc, const char **argv, const char *prefix) git_config(fsck_config, NULL); - fsck_head_link(); if (connectivity_only) { for_each_loose_object(mark_loose_for_connectivity, NULL, 0); for_each_packed_object(mark_packed_for_connectivity, NULL, 0); diff --git a/builtin/reflog.c b/builtin/reflog.c index b5941c1ff3..7a85e4b164 100644 --- a/builtin/reflog.c +++ b/builtin/reflog.c @@ -10,6 +10,7 @@ #include "diff.h" #include "revision.h" #include "reachable.h" +#include "worktree.h" /* NEEDSWORK: switch to using parse_options */ static const char reflog_expire_usage[] = @@ -52,6 +53,7 @@ struct collect_reflog_cb { struct collected_reflog **e; int alloc; int nr; + struct worktree *wt; }; /* Remember to update object flag allocation in object.h */ @@ -330,13 +332,27 @@ static int push_tip_to_list(const char *refname, const struct object_id *oid, return 0; } +static int is_head(const char *refname) +{ + switch (ref_type(refname)) { + case REF_TYPE_OTHER_PSEUDOREF: + case REF_TYPE_MAIN_PSEUDOREF: + if (parse_worktree_ref(refname, NULL, NULL, &refname)) + BUG("not a worktree ref: %s", refname); + break; + default: + break; + } + return !strcmp(refname, "HEAD"); +} + static void reflog_expiry_prepare(const char *refname, const struct object_id *oid, void *cb_data) { struct expire_reflog_policy_cb *cb = cb_data; - if (!cb->cmd.expire_unreachable || !strcmp(refname, "HEAD")) { + if (!cb->cmd.expire_unreachable || is_head(refname)) { cb->tip_commit = NULL; cb->unreachable_expire_kind = UE_HEAD; } else { @@ -388,8 +404,19 @@ static int collect_reflog(const char *ref, const struct object_id *oid, int unus { struct collected_reflog *e; struct collect_reflog_cb *cb = cb_data; + struct strbuf newref = STRBUF_INIT; + + /* + * Avoid collecting the same shared ref multiple times because + * they are available via all worktrees. + */ + if (!cb->wt->is_current && ref_type(ref) == REF_TYPE_NORMAL) + return 0; + + strbuf_worktree_ref(cb->wt, &newref, ref); + FLEX_ALLOC_STR(e, reflog, newref.buf); + strbuf_release(&newref); - FLEX_ALLOC_STR(e, reflog, ref); oidcpy(&e->oid, oid); ALLOC_GROW(cb->e, cb->nr + 1, cb->alloc); cb->e[cb->nr++] = e; @@ -512,7 +539,7 @@ static int cmd_reflog_expire(int argc, const char **argv, const char *prefix) { struct expire_reflog_policy_cb cb; timestamp_t now = time(NULL); - int i, status, do_all; + int i, status, do_all, all_worktrees = 1; int explicit_expiry = 0; unsigned int flags = 0; @@ -549,6 +576,8 @@ static int cmd_reflog_expire(int argc, const char **argv, const char *prefix) flags |= EXPIRE_REFLOGS_UPDATE_REF; else if (!strcmp(arg, "--all")) do_all = 1; + else if (!strcmp(arg, "--single-worktree")) + all_worktrees = 0; else if (!strcmp(arg, "--verbose")) flags |= EXPIRE_REFLOGS_VERBOSE; else if (!strcmp(arg, "--")) { @@ -577,10 +606,19 @@ static int cmd_reflog_expire(int argc, const char **argv, const char *prefix) if (do_all) { struct collect_reflog_cb collected; + struct worktree **worktrees, **p; int i; memset(&collected, 0, sizeof(collected)); - for_each_reflog(collect_reflog, &collected); + worktrees = get_worktrees(0); + for (p = worktrees; *p; p++) { + if (!all_worktrees && !(*p)->is_current) + continue; + collected.wt = *p; + refs_for_each_reflog(get_worktree_ref_store(*p), + collect_reflog, &collected); + } + free_worktrees(worktrees); for (i = 0; i < collected.nr; i++) { struct collected_reflog *e = collected.e[i]; set_reflog_expiry_param(&cb.cmd, explicit_expiry, e->reflog); @@ -108,6 +108,7 @@ struct common_dir { static struct common_dir common_list[] = { { 0, 1, 0, "branches" }, + { 0, 1, 0, "common" }, { 0, 1, 0, "hooks" }, { 0, 1, 0, "info" }, { 0, 0, 1, "info/sparse-checkout" }, @@ -118,6 +119,7 @@ static struct common_dir common_list[] = { { 0, 1, 0, "objects" }, { 0, 1, 0, "refs" }, { 0, 1, 1, "refs/bisect" }, + { 0, 1, 1, "refs/worktree" }, { 0, 1, 0, "remotes" }, { 0, 1, 0, "worktrees" }, { 0, 1, 0, "rr-cache" }, @@ -624,6 +624,7 @@ int dwim_log(const char *str, int len, struct object_id *oid, char **log) static int is_per_worktree_ref(const char *refname) { return !strcmp(refname, "HEAD") || + starts_with(refname, "refs/worktree/") || starts_with(refname, "refs/bisect/") || starts_with(refname, "refs/rewritten/"); } @@ -640,13 +641,34 @@ static int is_pseudoref_syntax(const char *refname) return 1; } +static int is_main_pseudoref_syntax(const char *refname) +{ + return skip_prefix(refname, "main-worktree/", &refname) && + *refname && + is_pseudoref_syntax(refname); +} + +static int is_other_pseudoref_syntax(const char *refname) +{ + if (!skip_prefix(refname, "worktrees/", &refname)) + return 0; + refname = strchr(refname, '/'); + if (!refname || !refname[1]) + return 0; + return is_pseudoref_syntax(refname + 1); +} + enum ref_type ref_type(const char *refname) { if (is_per_worktree_ref(refname)) return REF_TYPE_PER_WORKTREE; if (is_pseudoref_syntax(refname)) return REF_TYPE_PSEUDOREF; - return REF_TYPE_NORMAL; + if (is_main_pseudoref_syntax(refname)) + return REF_TYPE_MAIN_PSEUDOREF; + if (is_other_pseudoref_syntax(refname)) + return REF_TYPE_OTHER_PSEUDOREF; + return REF_TYPE_NORMAL; } long get_files_ref_lock_timeout_ms(void) @@ -714,9 +714,11 @@ int parse_hide_refs_config(const char *var, const char *value, const char *); int ref_is_hidden(const char *, const char *); enum ref_type { - REF_TYPE_PER_WORKTREE, - REF_TYPE_PSEUDOREF, - REF_TYPE_NORMAL, + REF_TYPE_PER_WORKTREE, /* refs inside refs/ but not shared */ + REF_TYPE_PSEUDOREF, /* refs outside refs/ in current worktree */ + REF_TYPE_MAIN_PSEUDOREF, /* pseudo refs from the main worktree */ + REF_TYPE_OTHER_PSEUDOREF, /* pseudo refs from other worktrees */ + REF_TYPE_NORMAL, /* normal/shared refs inside refs/ */ }; enum ref_type ref_type(const char *refname); diff --git a/refs/files-backend.c b/refs/files-backend.c index 16ef9325e0..9183875dad 100644 --- a/refs/files-backend.c +++ b/refs/files-backend.c @@ -10,6 +10,7 @@ #include "../object.h" #include "../dir.h" #include "../chdir-notify.h" +#include "worktree.h" /* * This backend uses the following flags in `ref_update::flags` for @@ -149,6 +150,25 @@ static struct files_ref_store *files_downcast(struct ref_store *ref_store, return refs; } +static void files_reflog_path_other_worktrees(struct files_ref_store *refs, + struct strbuf *sb, + const char *refname) +{ + const char *real_ref; + const char *worktree_name; + int length; + + if (parse_worktree_ref(refname, &worktree_name, &length, &real_ref)) + BUG("refname %s is not a other-worktree ref", refname); + + if (worktree_name) + strbuf_addf(sb, "%s/worktrees/%.*s/logs/%s", refs->gitcommondir, + length, worktree_name, real_ref); + else + strbuf_addf(sb, "%s/logs/%s", refs->gitcommondir, + real_ref); +} + static void files_reflog_path(struct files_ref_store *refs, struct strbuf *sb, const char *refname) @@ -158,6 +178,9 @@ static void files_reflog_path(struct files_ref_store *refs, case REF_TYPE_PSEUDOREF: strbuf_addf(sb, "%s/logs/%s", refs->gitdir, refname); break; + case REF_TYPE_OTHER_PSEUDOREF: + case REF_TYPE_MAIN_PSEUDOREF: + return files_reflog_path_other_worktrees(refs, sb, refname); case REF_TYPE_NORMAL: strbuf_addf(sb, "%s/logs/%s", refs->gitcommondir, refname); break; @@ -176,6 +199,11 @@ static void files_ref_path(struct files_ref_store *refs, case REF_TYPE_PSEUDOREF: strbuf_addf(sb, "%s/%s", refs->gitdir, refname); break; + case REF_TYPE_MAIN_PSEUDOREF: + if (!skip_prefix(refname, "main-worktree/", &refname)) + BUG("ref %s is not a main pseudoref", refname); + /* fallthrough */ + case REF_TYPE_OTHER_PSEUDOREF: case REF_TYPE_NORMAL: strbuf_addf(sb, "%s/%s", refs->gitcommondir, refname); break; @@ -269,9 +297,9 @@ static void loose_fill_ref_dir(struct ref_store *ref_store, closedir(d); /* - * Manually add refs/bisect, which, being per-worktree, might - * not appear in the directory listing for refs/ in the main - * repo. + * Manually add refs/bisect and refs/worktree, which, being + * per-worktree, might not appear in the directory listing for + * refs/ in the main repo. */ if (!strcmp(dirname, "refs/")) { int pos = search_ref_dir(dir, "refs/bisect/", 12); @@ -281,6 +309,14 @@ static void loose_fill_ref_dir(struct ref_store *ref_store, dir->cache, "refs/bisect/", 12, 1); add_entry_to_dir(dir, child_entry); } + + pos = search_ref_dir(dir, "refs/worktree/", 11); + + if (pos < 0) { + struct ref_entry *child_entry = create_dir_entry( + dir->cache, "refs/worktree/", 11, 1); + add_entry_to_dir(dir, child_entry); + } } } diff --git a/revision.c b/revision.c index 28fb2a70cd..59a3c22b8a 100644 --- a/revision.c +++ b/revision.c @@ -1177,7 +1177,7 @@ struct all_refs_cb { int warned_bad_reflog; struct rev_info *all_revs; const char *name_for_errormsg; - struct ref_store *refs; + struct worktree *wt; }; int ref_excluded(struct string_list *ref_excludes, const char *path) @@ -1214,7 +1214,7 @@ static void init_all_refs_cb(struct all_refs_cb *cb, struct rev_info *revs, cb->all_revs = revs; cb->all_flags = flags; revs->rev_input_given = 1; - cb->refs = NULL; + cb->wt = NULL; } void clear_ref_exclusion(struct string_list **ref_excludes_p) @@ -1277,14 +1277,20 @@ static int handle_one_reflog_ent(struct object_id *ooid, struct object_id *noid, return 0; } -static int handle_one_reflog(const char *path, const struct object_id *oid, +static int handle_one_reflog(const char *refname_in_wt, + const struct object_id *oid, int flag, void *cb_data) { struct all_refs_cb *cb = cb_data; + struct strbuf refname = STRBUF_INIT; + cb->warned_bad_reflog = 0; - cb->name_for_errormsg = path; - refs_for_each_reflog_ent(cb->refs, path, + strbuf_worktree_ref(cb->wt, &refname, refname_in_wt); + cb->name_for_errormsg = refname.buf; + refs_for_each_reflog_ent(get_main_ref_store(the_repository), + refname.buf, handle_one_reflog_ent, cb_data); + strbuf_release(&refname); return 0; } @@ -1299,8 +1305,8 @@ static void add_other_reflogs_to_pending(struct all_refs_cb *cb) if (wt->is_current) continue; - cb->refs = get_worktree_ref_store(wt); - refs_for_each_reflog(cb->refs, + cb->wt = wt; + refs_for_each_reflog(get_worktree_ref_store(wt), handle_one_reflog, cb); } @@ -1313,7 +1319,7 @@ void add_reflogs_to_pending(struct rev_info *revs, unsigned flags) cb.all_revs = revs; cb.all_flags = flags; - cb.refs = get_main_ref_store(revs->repo); + cb.wt = NULL; for_each_reflog(handle_one_reflog, &cb); if (!revs->single_worktree) diff --git a/t/t0060-path-utils.sh b/t/t0060-path-utils.sh index cd74c0a471..c7b53e494b 100755 --- a/t/t0060-path-utils.sh +++ b/t/t0060-path-utils.sh @@ -306,6 +306,8 @@ test_git_path GIT_COMMON_DIR=bar hooks/me bar/hooks/me test_git_path GIT_COMMON_DIR=bar config bar/config test_git_path GIT_COMMON_DIR=bar packed-refs bar/packed-refs test_git_path GIT_COMMON_DIR=bar shallow bar/shallow +test_git_path GIT_COMMON_DIR=bar common bar/common +test_git_path GIT_COMMON_DIR=bar common/file bar/common/file # In the tests below, $(pwd) must be used because it is a native path on # Windows and avoids MSYS's path mangling (which simplifies "foo/../bar" and diff --git a/t/t1410-reflog.sh b/t/t1410-reflog.sh index 388b0611d8..3e053532eb 100755 --- a/t/t1410-reflog.sh +++ b/t/t1410-reflog.sh @@ -368,4 +368,19 @@ test_expect_success 'continue walking past root commits' ' ) ' +test_expect_success 'expire with multiple worktrees' ' + git init main-wt && + ( + cd main-wt && + test_tick && + test_commit foo && + git worktree add link-wt && + test_tick && + test_commit -C link-wt foobar && + test_tick && + git reflog expire --verbose --all --expire=$test_tick && + test_must_be_empty .git/worktrees/link-wt/logs/HEAD + ) +' + test_done diff --git a/t/t1415-worktree-refs.sh b/t/t1415-worktree-refs.sh new file mode 100755 index 0000000000..b664e51250 --- /dev/null +++ b/t/t1415-worktree-refs.sh @@ -0,0 +1,79 @@ +#!/bin/sh + +test_description='per-worktree refs' + +. ./test-lib.sh + +test_expect_success 'setup' ' + test_commit initial && + test_commit wt1 && + test_commit wt2 && + git worktree add wt1 wt1 && + git worktree add wt2 wt2 && + git checkout initial && + git update-ref refs/worktree/foo HEAD && + git -C wt1 update-ref refs/worktree/foo HEAD && + git -C wt2 update-ref refs/worktree/foo HEAD +' + +test_expect_success 'refs/worktree must not be packed' ' + git pack-refs --all && + test_path_is_missing .git/refs/tags/wt1 && + test_path_is_file .git/refs/worktree/foo && + test_path_is_file .git/worktrees/wt1/refs/worktree/foo && + test_path_is_file .git/worktrees/wt2/refs/worktree/foo +' + +test_expect_success 'refs/worktree are per-worktree' ' + test_cmp_rev worktree/foo initial && + ( cd wt1 && test_cmp_rev worktree/foo wt1 ) && + ( cd wt2 && test_cmp_rev worktree/foo wt2 ) +' + +test_expect_success 'resolve main-worktree/HEAD' ' + test_cmp_rev main-worktree/HEAD initial && + ( cd wt1 && test_cmp_rev main-worktree/HEAD initial ) && + ( cd wt2 && test_cmp_rev main-worktree/HEAD initial ) +' + +test_expect_success 'ambiguous main-worktree/HEAD' ' + mkdir -p .git/refs/heads/main-worktree && + test_when_finished rm -f .git/refs/heads/main-worktree/HEAD && + cp .git/HEAD .git/refs/heads/main-worktree/HEAD && + git rev-parse main-worktree/HEAD 2>warn && + grep "main-worktree/HEAD.*ambiguous" warn +' + +test_expect_success 'resolve worktrees/xx/HEAD' ' + test_cmp_rev worktrees/wt1/HEAD wt1 && + ( cd wt1 && test_cmp_rev worktrees/wt1/HEAD wt1 ) && + ( cd wt2 && test_cmp_rev worktrees/wt1/HEAD wt1 ) +' + +test_expect_success 'ambiguous worktrees/xx/HEAD' ' + mkdir -p .git/refs/heads/worktrees/wt1 && + test_when_finished rm -f .git/refs/heads/worktrees/wt1/HEAD && + cp .git/HEAD .git/refs/heads/worktrees/wt1/HEAD && + git rev-parse worktrees/wt1/HEAD 2>warn && + grep "worktrees/wt1/HEAD.*ambiguous" warn +' + +test_expect_success 'reflog of main-worktree/HEAD' ' + git reflog HEAD | sed "s/HEAD/main-worktree\/HEAD/" >expected && + git reflog main-worktree/HEAD >actual && + test_cmp expected actual && + git -C wt1 reflog main-worktree/HEAD >actual.wt1 && + test_cmp expected actual.wt1 +' + +test_expect_success 'reflog of worktrees/xx/HEAD' ' + git -C wt2 reflog HEAD | sed "s/HEAD/worktrees\/wt2\/HEAD/" >expected && + git reflog worktrees/wt2/HEAD >actual && + test_cmp expected actual && + git -C wt1 reflog worktrees/wt2/HEAD >actual.wt1 && + test_cmp expected actual.wt1 && + git -C wt2 reflog worktrees/wt2/HEAD >actual.wt2 && + test_cmp expected actual.wt2 +' + +test_done diff --git a/t/t1450-fsck.sh b/t/t1450-fsck.sh index b5677d26a4..e20e8fa830 100755 --- a/t/t1450-fsck.sh +++ b/t/t1450-fsck.sh @@ -101,6 +101,41 @@ test_expect_success 'HEAD link pointing at a funny place' ' grep "HEAD points to something strange" out ' +test_expect_success 'HEAD link pointing at a funny object (from different wt)' ' + test_when_finished "mv .git/SAVED_HEAD .git/HEAD" && + test_when_finished "rm -rf .git/worktrees wt" && + git worktree add wt && + mv .git/HEAD .git/SAVED_HEAD && + echo $ZERO_OID >.git/HEAD && + # avoid corrupt/broken HEAD from interfering with repo discovery + test_must_fail git -C wt fsck 2>out && + grep "main-worktree/HEAD: detached HEAD points" out +' + +test_expect_success 'other worktree HEAD link pointing at a funny object' ' + test_when_finished "rm -rf .git/worktrees other" && + git worktree add other && + echo $ZERO_OID >.git/worktrees/other/HEAD && + test_must_fail git fsck 2>out && + grep "worktrees/other/HEAD: detached HEAD points" out +' + +test_expect_success 'other worktree HEAD link pointing at missing object' ' + test_when_finished "rm -rf .git/worktrees other" && + git worktree add other && + echo "Contents missing from repo" | git hash-object --stdin >.git/worktrees/other/HEAD && + test_must_fail git fsck 2>out && + grep "worktrees/other/HEAD: invalid sha1 pointer" out +' + +test_expect_success 'other worktree HEAD link pointing at a funny place' ' + test_when_finished "rm -rf .git/worktrees other" && + git worktree add other && + echo "ref: refs/funny/place" >.git/worktrees/other/HEAD && + test_must_fail git fsck 2>out && + grep "worktrees/other/HEAD points to something strange" out +' + test_expect_success 'email without @ is okay' ' git cat-file commit HEAD >basis && sed "s/@/AT/" basis >okay && diff --git a/worktree.c b/worktree.c index befdbe7fae..d6a0ee7f73 100644 --- a/worktree.c +++ b/worktree.c @@ -487,6 +487,75 @@ int submodule_uses_worktrees(const char *path) return ret; } +int parse_worktree_ref(const char *worktree_ref, const char **name, + int *name_length, const char **ref) +{ + if (skip_prefix(worktree_ref, "main-worktree/", &worktree_ref)) { + if (!*worktree_ref) + return -1; + if (name) + *name = NULL; + if (name_length) + *name_length = 0; + if (ref) + *ref = worktree_ref; + return 0; + } + if (skip_prefix(worktree_ref, "worktrees/", &worktree_ref)) { + const char *slash = strchr(worktree_ref, '/'); + + if (!slash || slash == worktree_ref || !slash[1]) + return -1; + if (name) + *name = worktree_ref; + if (name_length) + *name_length = slash - worktree_ref; + if (ref) + *ref = slash + 1; + return 0; + } + return -1; +} + +void strbuf_worktree_ref(const struct worktree *wt, + struct strbuf *sb, + const char *refname) +{ + switch (ref_type(refname)) { + case REF_TYPE_PSEUDOREF: + case REF_TYPE_PER_WORKTREE: + if (wt && !wt->is_current) { + if (is_main_worktree(wt)) + strbuf_addstr(sb, "main-worktree/"); + else + strbuf_addf(sb, "worktrees/%s/", wt->id); + } + break; + + case REF_TYPE_MAIN_PSEUDOREF: + case REF_TYPE_OTHER_PSEUDOREF: + break; + + case REF_TYPE_NORMAL: + /* + * For shared refs, don't prefix worktrees/ or + * main-worktree/. It's not necessary and + * files-backend.c can't handle it anyway. + */ + break; + } + strbuf_addstr(sb, refname); +} + +const char *worktree_ref(const struct worktree *wt, const char *refname) +{ + static struct strbuf sb = STRBUF_INIT; + + strbuf_reset(&sb); + strbuf_worktree_ref(wt, &sb, refname); + return sb.buf; +} + int other_head_refs(each_ref_fn fn, void *cb_data) { struct worktree **worktrees, **p; @@ -495,13 +564,17 @@ int other_head_refs(each_ref_fn fn, void *cb_data) worktrees = get_worktrees(0); for (p = worktrees; *p; p++) { struct worktree *wt = *p; - struct ref_store *refs; + struct object_id oid; + int flag; if (wt->is_current) continue; - refs = get_worktree_ref_store(wt); - ret = refs_head_ref(refs, fn, cb_data); + if (!refs_read_ref_full(get_main_ref_store(the_repository), + worktree_ref(wt, "HEAD"), + RESOLVE_REF_READING, + &oid, &flag)) + ret = fn(worktree_ref(wt, "HEAD"), &oid, flag, cb_data); if (ret) break; } diff --git a/worktree.h b/worktree.h index 55d449b6a9..9e3b0b7b6f 100644 --- a/worktree.h +++ b/worktree.h @@ -108,4 +108,28 @@ extern const char *worktree_git_path(const struct worktree *wt, const char *fmt, ...) __attribute__((format (printf, 2, 3))); +/* + * Parse a worktree ref (i.e. with prefix main-worktree/ or + * worktrees/) and return the position of the worktree's name and + * length (or NULL and zero if it's main worktree), and ref. + * + * All name, name_length and ref arguments could be NULL. + */ +int parse_worktree_ref(const char *worktree_ref, const char **name, + int *name_length, const char **ref); + +/* + * Return a refname suitable for access from the current ref store. + */ +void strbuf_worktree_ref(const struct worktree *wt, + struct strbuf *sb, + const char *refname); + +/* + * Return a refname suitable for access from the current ref + * store. The result will be destroyed at the next call. + */ +const char *worktree_ref(const struct worktree *wt, + const char *refname); + #endif |