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authorJunio C Hamano <gitster@pobox.com>2020-02-14 20:54:24 (GMT)
committerJunio C Hamano <gitster@pobox.com>2020-02-14 20:54:24 (GMT)
commit53c3be2c29b97a68145d42b413df2f8c070a2084 (patch)
tree18f6572a288c4146d21149fe935810dcd41083d3
parent7b029ebaefd945b2315281fcdf9c35843641623b (diff)
parenta7df60cac834cb7f91c3463205c2b6ba5e694200 (diff)
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Merge branch 'tb/commit-graph-object-dir'
The code to compute the commit-graph has been taught to use a more robust way to tell if two object directories refer to the same thing. * tb/commit-graph-object-dir: commit-graph.h: use odb in 'load_commit_graph_one_fd_st' commit-graph.c: remove path normalization, comparison commit-graph.h: store object directory in 'struct commit_graph' commit-graph.h: store an odb in 'struct write_commit_graph_context' t5318: don't pass non-object directory to '--object-dir'
-rw-r--r--Documentation/git-commit-graph.txt5
-rw-r--r--builtin/commit-graph.c35
-rw-r--r--builtin/commit.c2
-rw-r--r--builtin/fetch.c2
-rw-r--r--builtin/gc.c2
-rw-r--r--commit-graph.c115
-rw-r--r--commit-graph.h15
-rw-r--r--t/helper/test-read-graph.c8
-rwxr-xr-xt/t5318-commit-graph.sh4
9 files changed, 101 insertions, 87 deletions
diff --git a/Documentation/git-commit-graph.txt b/Documentation/git-commit-graph.txt
index bcd85c1..28d1fee 100644
--- a/Documentation/git-commit-graph.txt
+++ b/Documentation/git-commit-graph.txt
@@ -26,7 +26,10 @@ OPTIONS
file. This parameter exists to specify the location of an alternate
that only has the objects directory, not a full `.git` directory. The
commit-graph file is expected to be in the `<dir>/info` directory and
- the packfiles are expected to be in `<dir>/pack`.
+ the packfiles are expected to be in `<dir>/pack`. If the directory
+ could not be made into an absolute path, or does not match any known
+ object directory, `git commit-graph ...` will exit with non-zero
+ status.
--[no-]progress::
Turn progress on/off explicitly. If neither is specified, progress is
diff --git a/builtin/commit-graph.c b/builtin/commit-graph.c
index e0c6fc4..4a70b33 100644
--- a/builtin/commit-graph.c
+++ b/builtin/commit-graph.c
@@ -34,9 +34,29 @@ static struct opts_commit_graph {
int progress;
} opts;
+static struct object_directory *find_odb(struct repository *r,
+ const char *obj_dir)
+{
+ struct object_directory *odb;
+ char *obj_dir_real = real_pathdup(obj_dir, 1);
+
+ prepare_alt_odb(r);
+ for (odb = r->objects->odb; odb; odb = odb->next) {
+ if (!strcmp(obj_dir_real, real_path(odb->path)))
+ break;
+ }
+
+ free(obj_dir_real);
+
+ if (!odb)
+ die(_("could not find object directory matching %s"), obj_dir);
+ return odb;
+}
+
static int graph_verify(int argc, const char **argv)
{
struct commit_graph *graph = NULL;
+ struct object_directory *odb = NULL;
char *graph_name;
int open_ok;
int fd;
@@ -67,7 +87,8 @@ static int graph_verify(int argc, const char **argv)
if (opts.progress)
flags |= COMMIT_GRAPH_WRITE_PROGRESS;
- graph_name = get_commit_graph_filename(opts.obj_dir);
+ odb = find_odb(the_repository, opts.obj_dir);
+ graph_name = get_commit_graph_filename(odb);
open_ok = open_commit_graph(graph_name, &fd, &st);
if (!open_ok && errno != ENOENT)
die_errno(_("Could not open commit-graph '%s'"), graph_name);
@@ -75,9 +96,9 @@ static int graph_verify(int argc, const char **argv)
FREE_AND_NULL(graph_name);
if (open_ok)
- graph = load_commit_graph_one_fd_st(fd, &st);
- else
- graph = read_commit_graph_one(the_repository, opts.obj_dir);
+ graph = load_commit_graph_one_fd_st(fd, &st, odb);
+ else
+ graph = read_commit_graph_one(the_repository, odb);
/* Return failure if open_ok predicted success */
if (!graph)
@@ -94,6 +115,7 @@ static int graph_write(int argc, const char **argv)
{
struct string_list *pack_indexes = NULL;
struct string_list *commit_hex = NULL;
+ struct object_directory *odb = NULL;
struct string_list lines;
int result = 0;
enum commit_graph_write_flags flags = 0;
@@ -145,9 +167,10 @@ static int graph_write(int argc, const char **argv)
flags |= COMMIT_GRAPH_WRITE_PROGRESS;
read_replace_refs = 0;
+ odb = find_odb(the_repository, opts.obj_dir);
if (opts.reachable) {
- if (write_commit_graph_reachable(opts.obj_dir, flags, &split_opts))
+ if (write_commit_graph_reachable(odb, flags, &split_opts))
return 1;
return 0;
}
@@ -169,7 +192,7 @@ static int graph_write(int argc, const char **argv)
UNLEAK(buf);
}
- if (write_commit_graph(opts.obj_dir,
+ if (write_commit_graph(odb,
pack_indexes,
commit_hex,
flags,
diff --git a/builtin/commit.c b/builtin/commit.c
index c70ad01..7ba33a3 100644
--- a/builtin/commit.c
+++ b/builtin/commit.c
@@ -1693,7 +1693,7 @@ int cmd_commit(int argc, const char **argv, const char *prefix)
"not exceeded, and then \"git restore --staged :/\" to recover."));
if (git_env_bool(GIT_TEST_COMMIT_GRAPH, 0) &&
- write_commit_graph_reachable(get_object_directory(), 0, NULL))
+ write_commit_graph_reachable(the_repository->objects->odb, 0, NULL))
return 1;
repo_rerere(the_repository, 0);
diff --git a/builtin/fetch.c b/builtin/fetch.c
index 6fb5032..ab7e4b1 100644
--- a/builtin/fetch.c
+++ b/builtin/fetch.c
@@ -1879,7 +1879,7 @@ int cmd_fetch(int argc, const char **argv, const char *prefix)
if (progress)
commit_graph_flags |= COMMIT_GRAPH_WRITE_PROGRESS;
- write_commit_graph_reachable(get_object_directory(),
+ write_commit_graph_reachable(the_repository->objects->odb,
commit_graph_flags,
NULL);
}
diff --git a/builtin/gc.c b/builtin/gc.c
index 3f76bf4..8e0b9cf 100644
--- a/builtin/gc.c
+++ b/builtin/gc.c
@@ -686,7 +686,7 @@ int cmd_gc(int argc, const char **argv, const char *prefix)
prepare_repo_settings(the_repository);
if (the_repository->settings.gc_write_commit_graph == 1)
- write_commit_graph_reachable(get_object_directory(),
+ write_commit_graph_reachable(the_repository->objects->odb,
!quiet && !daemonized ? COMMIT_GRAPH_WRITE_PROGRESS : 0,
NULL);
diff --git a/commit-graph.c b/commit-graph.c
index b205e65..656dd64 100644
--- a/commit-graph.c
+++ b/commit-graph.c
@@ -44,30 +44,21 @@
/* Remember to update object flag allocation in object.h */
#define REACHABLE (1u<<15)
-char *get_commit_graph_filename(const char *obj_dir)
+char *get_commit_graph_filename(struct object_directory *odb)
{
- char *filename = xstrfmt("%s/info/commit-graph", obj_dir);
- char *normalized = xmalloc(strlen(filename) + 1);
- normalize_path_copy(normalized, filename);
- free(filename);
- return normalized;
+ return xstrfmt("%s/info/commit-graph", odb->path);
}
-static char *get_split_graph_filename(const char *obj_dir,
+static char *get_split_graph_filename(struct object_directory *odb,
const char *oid_hex)
{
- char *filename = xstrfmt("%s/info/commit-graphs/graph-%s.graph",
- obj_dir,
- oid_hex);
- char *normalized = xmalloc(strlen(filename) + 1);
- normalize_path_copy(normalized, filename);
- free(filename);
- return normalized;
+ return xstrfmt("%s/info/commit-graphs/graph-%s.graph", odb->path,
+ oid_hex);
}
-static char *get_chain_filename(const char *obj_dir)
+static char *get_chain_filename(struct object_directory *odb)
{
- return xstrfmt("%s/info/commit-graphs/commit-graph-chain", obj_dir);
+ return xstrfmt("%s/info/commit-graphs/commit-graph-chain", odb->path);
}
static uint8_t oid_version(void)
@@ -117,7 +108,8 @@ int open_commit_graph(const char *graph_file, int *fd, struct stat *st)
return 1;
}
-struct commit_graph *load_commit_graph_one_fd_st(int fd, struct stat *st)
+struct commit_graph *load_commit_graph_one_fd_st(int fd, struct stat *st,
+ struct object_directory *odb)
{
void *graph_map;
size_t graph_size;
@@ -133,7 +125,9 @@ struct commit_graph *load_commit_graph_one_fd_st(int fd, struct stat *st)
graph_map = xmmap(NULL, graph_size, PROT_READ, MAP_PRIVATE, fd, 0);
ret = parse_commit_graph(graph_map, fd, graph_size);
- if (!ret) {
+ if (ret)
+ ret->odb = odb;
+ else {
munmap(graph_map, graph_size);
close(fd);
}
@@ -308,7 +302,8 @@ struct commit_graph *parse_commit_graph(void *graph_map, int fd,
return graph;
}
-static struct commit_graph *load_commit_graph_one(const char *graph_file)
+static struct commit_graph *load_commit_graph_one(const char *graph_file,
+ struct object_directory *odb)
{
struct stat st;
@@ -319,7 +314,7 @@ static struct commit_graph *load_commit_graph_one(const char *graph_file)
if (!open_ok)
return NULL;
- g = load_commit_graph_one_fd_st(fd, &st);
+ g = load_commit_graph_one_fd_st(fd, &st, odb);
if (g)
g->filename = xstrdup(graph_file);
@@ -327,15 +322,13 @@ static struct commit_graph *load_commit_graph_one(const char *graph_file)
return g;
}
-static struct commit_graph *load_commit_graph_v1(struct repository *r, const char *obj_dir)
+static struct commit_graph *load_commit_graph_v1(struct repository *r,
+ struct object_directory *odb)
{
- char *graph_name = get_commit_graph_filename(obj_dir);
- struct commit_graph *g = load_commit_graph_one(graph_name);
+ char *graph_name = get_commit_graph_filename(odb);
+ struct commit_graph *g = load_commit_graph_one(graph_name, odb);
free(graph_name);
- if (g)
- g->obj_dir = obj_dir;
-
return g;
}
@@ -372,14 +365,15 @@ static int add_graph_to_chain(struct commit_graph *g,
return 1;
}
-static struct commit_graph *load_commit_graph_chain(struct repository *r, const char *obj_dir)
+static struct commit_graph *load_commit_graph_chain(struct repository *r,
+ struct object_directory *odb)
{
struct commit_graph *graph_chain = NULL;
struct strbuf line = STRBUF_INIT;
struct stat st;
struct object_id *oids;
int i = 0, valid = 1, count;
- char *chain_name = get_chain_filename(obj_dir);
+ char *chain_name = get_chain_filename(odb);
FILE *fp;
int stat_res;
@@ -412,14 +406,12 @@ static struct commit_graph *load_commit_graph_chain(struct repository *r, const
valid = 0;
for (odb = r->objects->odb; odb; odb = odb->next) {
- char *graph_name = get_split_graph_filename(odb->path, line.buf);
- struct commit_graph *g = load_commit_graph_one(graph_name);
+ char *graph_name = get_split_graph_filename(odb, line.buf);
+ struct commit_graph *g = load_commit_graph_one(graph_name, odb);
free(graph_name);
if (g) {
- g->obj_dir = odb->path;
-
if (add_graph_to_chain(g, graph_chain, oids, i)) {
graph_chain = g;
valid = 1;
@@ -442,23 +434,25 @@ static struct commit_graph *load_commit_graph_chain(struct repository *r, const
return graph_chain;
}
-struct commit_graph *read_commit_graph_one(struct repository *r, const char *obj_dir)
+struct commit_graph *read_commit_graph_one(struct repository *r,
+ struct object_directory *odb)
{
- struct commit_graph *g = load_commit_graph_v1(r, obj_dir);
+ struct commit_graph *g = load_commit_graph_v1(r, odb);
if (!g)
- g = load_commit_graph_chain(r, obj_dir);
+ g = load_commit_graph_chain(r, odb);
return g;
}
-static void prepare_commit_graph_one(struct repository *r, const char *obj_dir)
+static void prepare_commit_graph_one(struct repository *r,
+ struct object_directory *odb)
{
if (r->objects->commit_graph)
return;
- r->objects->commit_graph = read_commit_graph_one(r, obj_dir);
+ r->objects->commit_graph = read_commit_graph_one(r, odb);
}
/*
@@ -505,7 +499,7 @@ static int prepare_commit_graph(struct repository *r)
for (odb = r->objects->odb;
!r->objects->commit_graph && odb;
odb = odb->next)
- prepare_commit_graph_one(r, odb->path);
+ prepare_commit_graph_one(r, odb);
return !!r->objects->commit_graph;
}
@@ -772,7 +766,7 @@ struct packed_oid_list {
struct write_commit_graph_context {
struct repository *r;
- char *obj_dir;
+ struct object_directory *odb;
char *graph_name;
struct packed_oid_list oids;
struct packed_commit_list commits;
@@ -1149,7 +1143,7 @@ static int add_ref_to_list(const char *refname,
return 0;
}
-int write_commit_graph_reachable(const char *obj_dir,
+int write_commit_graph_reachable(struct object_directory *odb,
enum commit_graph_write_flags flags,
const struct split_commit_graph_opts *split_opts)
{
@@ -1157,7 +1151,7 @@ int write_commit_graph_reachable(const char *obj_dir,
int result;
for_each_ref(add_ref_to_list, &list);
- result = write_commit_graph(obj_dir, NULL, &list,
+ result = write_commit_graph(odb, NULL, &list,
flags, split_opts);
string_list_clear(&list, 0);
@@ -1172,7 +1166,7 @@ static int fill_oids_from_packs(struct write_commit_graph_context *ctx,
struct strbuf packname = STRBUF_INIT;
int dirlen;
- strbuf_addf(&packname, "%s/pack/", ctx->obj_dir);
+ strbuf_addf(&packname, "%s/pack/", ctx->odb->path);
dirlen = packname.len;
if (ctx->report_progress) {
strbuf_addf(&progress_title,
@@ -1368,10 +1362,10 @@ static int write_commit_graph_file(struct write_commit_graph_context *ctx)
strbuf_addf(&tmp_file,
"%s/info/commit-graphs/tmp_graph_XXXXXX",
- ctx->obj_dir);
+ ctx->odb->path);
ctx->graph_name = strbuf_detach(&tmp_file, NULL);
} else {
- ctx->graph_name = get_commit_graph_filename(ctx->obj_dir);
+ ctx->graph_name = get_commit_graph_filename(ctx->odb);
}
if (safe_create_leading_directories(ctx->graph_name)) {
@@ -1382,7 +1376,7 @@ static int write_commit_graph_file(struct write_commit_graph_context *ctx)
}
if (ctx->split) {
- char *lock_name = get_chain_filename(ctx->obj_dir);
+ char *lock_name = get_chain_filename(ctx->odb);
hold_lock_file_for_update(&lk, lock_name, LOCK_DIE_ON_ERROR);
@@ -1470,7 +1464,7 @@ static int write_commit_graph_file(struct write_commit_graph_context *ctx)
if (ctx->split && ctx->base_graph_name && ctx->num_commit_graphs_after > 1) {
char *new_base_hash = xstrdup(oid_to_hex(&ctx->new_base_graph->oid));
- char *new_base_name = get_split_graph_filename(ctx->new_base_graph->obj_dir, new_base_hash);
+ char *new_base_name = get_split_graph_filename(ctx->new_base_graph->odb, new_base_hash);
free(ctx->commit_graph_filenames_after[ctx->num_commit_graphs_after - 2]);
free(ctx->commit_graph_hash_after[ctx->num_commit_graphs_after - 2]);
@@ -1506,12 +1500,12 @@ static int write_commit_graph_file(struct write_commit_graph_context *ctx)
}
}
} else {
- char *graph_name = get_commit_graph_filename(ctx->obj_dir);
+ char *graph_name = get_commit_graph_filename(ctx->odb);
unlink(graph_name);
}
ctx->commit_graph_hash_after[ctx->num_commit_graphs_after - 1] = xstrdup(oid_to_hex(&file_hash));
- final_graph_name = get_split_graph_filename(ctx->obj_dir,
+ final_graph_name = get_split_graph_filename(ctx->odb,
ctx->commit_graph_hash_after[ctx->num_commit_graphs_after - 1]);
ctx->commit_graph_filenames_after[ctx->num_commit_graphs_after - 1] = final_graph_name;
@@ -1553,7 +1547,7 @@ static void split_graph_merge_strategy(struct write_commit_graph_context *ctx)
while (g && (g->num_commits <= size_mult * num_commits ||
(max_commits && num_commits > max_commits))) {
- if (strcmp(g->obj_dir, ctx->obj_dir))
+ if (g->odb != ctx->odb)
break;
num_commits += g->num_commits;
@@ -1565,10 +1559,10 @@ static void split_graph_merge_strategy(struct write_commit_graph_context *ctx)
ctx->new_base_graph = g;
if (ctx->num_commit_graphs_after == 2) {
- char *old_graph_name = get_commit_graph_filename(g->obj_dir);
+ char *old_graph_name = get_commit_graph_filename(g->odb);
if (!strcmp(g->filename, old_graph_name) &&
- strcmp(g->obj_dir, ctx->obj_dir)) {
+ g->odb != ctx->odb) {
ctx->num_commit_graphs_after = 1;
ctx->new_base_graph = NULL;
}
@@ -1719,13 +1713,13 @@ static void expire_commit_graphs(struct write_commit_graph_context *ctx)
if (ctx->split_opts && ctx->split_opts->expire_time)
expire_time -= ctx->split_opts->expire_time;
if (!ctx->split) {
- char *chain_file_name = get_chain_filename(ctx->obj_dir);
+ char *chain_file_name = get_chain_filename(ctx->odb);
unlink(chain_file_name);
free(chain_file_name);
ctx->num_commit_graphs_after = 0;
}
- strbuf_addstr(&path, ctx->obj_dir);
+ strbuf_addstr(&path, ctx->odb->path);
strbuf_addstr(&path, "/info/commit-graphs");
dir = opendir(path.buf);
@@ -1764,7 +1758,7 @@ out:
strbuf_release(&path);
}
-int write_commit_graph(const char *obj_dir,
+int write_commit_graph(struct object_directory *odb,
struct string_list *pack_indexes,
struct string_list *commit_hex,
enum commit_graph_write_flags flags,
@@ -1772,7 +1766,6 @@ int write_commit_graph(const char *obj_dir,
{
struct write_commit_graph_context *ctx;
uint32_t i, count_distinct = 0;
- size_t len;
int res = 0;
if (!commit_graph_compatible(the_repository))
@@ -1780,14 +1773,7 @@ int write_commit_graph(const char *obj_dir,
ctx = xcalloc(1, sizeof(struct write_commit_graph_context));
ctx->r = the_repository;
-
- /* normalize object dir with no trailing slash */
- ctx->obj_dir = xmallocz(strlen(obj_dir) + 1);
- normalize_path_copy(ctx->obj_dir, obj_dir);
- len = strlen(ctx->obj_dir);
- if (len && ctx->obj_dir[len - 1] == '/')
- ctx->obj_dir[len - 1] = 0;
-
+ ctx->odb = odb;
ctx->append = flags & COMMIT_GRAPH_WRITE_APPEND ? 1 : 0;
ctx->report_progress = flags & COMMIT_GRAPH_WRITE_PROGRESS ? 1 : 0;
ctx->split = flags & COMMIT_GRAPH_WRITE_SPLIT ? 1 : 0;
@@ -1824,7 +1810,7 @@ int write_commit_graph(const char *obj_dir,
ctx->oids.alloc = split_opts->max_commits;
if (ctx->append) {
- prepare_commit_graph_one(ctx->r, ctx->obj_dir);
+ prepare_commit_graph_one(ctx->r, ctx->odb);
if (ctx->r->objects->commit_graph)
ctx->oids.alloc += ctx->r->objects->commit_graph->num_commits;
}
@@ -1898,7 +1884,6 @@ cleanup:
free(ctx->graph_name);
free(ctx->commits.list);
free(ctx->oids.list);
- free(ctx->obj_dir);
if (ctx->commit_graph_filenames_after) {
for (i = 0; i < ctx->num_commit_graphs_after; i++) {
diff --git a/commit-graph.h b/commit-graph.h
index 7f5c933..e87a6f6 100644
--- a/commit-graph.h
+++ b/commit-graph.h
@@ -5,13 +5,14 @@
#include "repository.h"
#include "string-list.h"
#include "cache.h"
+#include "object-store.h"
#define GIT_TEST_COMMIT_GRAPH "GIT_TEST_COMMIT_GRAPH"
#define GIT_TEST_COMMIT_GRAPH_DIE_ON_LOAD "GIT_TEST_COMMIT_GRAPH_DIE_ON_LOAD"
struct commit;
-char *get_commit_graph_filename(const char *obj_dir);
+char *get_commit_graph_filename(struct object_directory *odb);
int open_commit_graph(const char *graph_file, int *fd, struct stat *st);
/*
@@ -48,7 +49,7 @@ struct commit_graph {
uint32_t num_commits;
struct object_id oid;
char *filename;
- const char *obj_dir;
+ struct object_directory *odb;
uint32_t num_commits_in_base;
struct commit_graph *base_graph;
@@ -60,8 +61,10 @@ struct commit_graph {
const unsigned char *chunk_base_graphs;
};
-struct commit_graph *load_commit_graph_one_fd_st(int fd, struct stat *st);
-struct commit_graph *read_commit_graph_one(struct repository *r, const char *obj_dir);
+struct commit_graph *load_commit_graph_one_fd_st(int fd, struct stat *st,
+ struct object_directory *odb);
+struct commit_graph *read_commit_graph_one(struct repository *r,
+ struct object_directory *odb);
struct commit_graph *parse_commit_graph(void *graph_map, int fd,
size_t graph_size);
@@ -91,10 +94,10 @@ struct split_commit_graph_opts {
* is not compatible with the commit-graph feature, then the
* methods will return 0 without writing a commit-graph.
*/
-int write_commit_graph_reachable(const char *obj_dir,
+int write_commit_graph_reachable(struct object_directory *odb,
enum commit_graph_write_flags flags,
const struct split_commit_graph_opts *split_opts);
-int write_commit_graph(const char *obj_dir,
+int write_commit_graph(struct object_directory *odb,
struct string_list *pack_indexes,
struct string_list *commit_hex,
enum commit_graph_write_flags flags,
diff --git a/t/helper/test-read-graph.c b/t/helper/test-read-graph.c
index d2884ef..f8a4617 100644
--- a/t/helper/test-read-graph.c
+++ b/t/helper/test-read-graph.c
@@ -11,18 +11,18 @@ int cmd__read_graph(int argc, const char **argv)
int open_ok;
int fd;
struct stat st;
- const char *object_dir;
+ struct object_directory *odb;
setup_git_directory();
- object_dir = get_object_directory();
+ odb = the_repository->objects->odb;
- graph_name = get_commit_graph_filename(object_dir);
+ graph_name = get_commit_graph_filename(odb);
open_ok = open_commit_graph(graph_name, &fd, &st);
if (!open_ok)
die_errno(_("Could not open commit-graph '%s'"), graph_name);
- graph = load_commit_graph_one_fd_st(fd, &st);
+ graph = load_commit_graph_one_fd_st(fd, &st, odb);
if (!graph)
return 1;
diff --git a/t/t5318-commit-graph.sh b/t/t5318-commit-graph.sh
index 81cf118..07b3207 100755
--- a/t/t5318-commit-graph.sh
+++ b/t/t5318-commit-graph.sh
@@ -19,8 +19,8 @@ test_expect_success 'verify graph with no graph file' '
test_expect_success 'write graph with no packs' '
cd "$TRASH_DIRECTORY/full" &&
- git commit-graph write --object-dir . &&
- test_path_is_missing info/commit-graph
+ git commit-graph write --object-dir $objdir &&
+ test_path_is_missing $objdir/info/commit-graph
'
test_expect_success 'exit with correct error on bad input to --stdin-packs' '