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-rw-r--r--sha1-file.c289
1 files changed, 154 insertions, 135 deletions
diff --git a/sha1-file.c b/sha1-file.c
index 03b86ae..386b96e 100644
--- a/sha1-file.c
+++ b/sha1-file.c
@@ -149,10 +149,10 @@ static struct cached_object *find_cached_object(const struct object_id *oid)
struct cached_object *co = cached_objects;
for (i = 0; i < cached_object_nr; i++, co++) {
- if (!oidcmp(&co->oid, oid))
+ if (oideq(&co->oid, oid))
return co;
}
- if (!oidcmp(oid, the_hash_algo->empty_tree))
+ if (oideq(oid, the_hash_algo->empty_tree))
return &empty_tree;
return NULL;
}
@@ -346,25 +346,21 @@ static void fill_sha1_path(struct strbuf *buf, const unsigned char *sha1)
}
}
-void sha1_file_name(struct repository *r, struct strbuf *buf, const unsigned char *sha1)
+static const char *odb_loose_path(struct object_directory *odb,
+ struct strbuf *buf,
+ const unsigned char *sha1)
{
- strbuf_addstr(buf, r->objects->objectdir);
+ strbuf_reset(buf);
+ strbuf_addstr(buf, odb->path);
strbuf_addch(buf, '/');
fill_sha1_path(buf, sha1);
+ return buf->buf;
}
-struct strbuf *alt_scratch_buf(struct alternate_object_database *alt)
+const char *loose_object_path(struct repository *r, struct strbuf *buf,
+ const unsigned char *sha1)
{
- strbuf_setlen(&alt->scratch, alt->base_len);
- return &alt->scratch;
-}
-
-static const char *alt_sha1_path(struct alternate_object_database *alt,
- const unsigned char *sha1)
-{
- struct strbuf *buf = alt_scratch_buf(alt);
- fill_sha1_path(buf, sha1);
- return buf->buf;
+ return odb_loose_path(r->objects->odb, buf, sha1);
}
/*
@@ -374,7 +370,7 @@ static int alt_odb_usable(struct raw_object_store *o,
struct strbuf *path,
const char *normalized_objdir)
{
- struct alternate_object_database *alt;
+ struct object_directory *odb;
/* Detect cases where alternate disappeared */
if (!is_directory(path->buf)) {
@@ -388,8 +384,8 @@ static int alt_odb_usable(struct raw_object_store *o,
* Prevent the common mistake of listing the same
* thing twice, or object directory itself.
*/
- for (alt = o->alt_odb_list; alt; alt = alt->next) {
- if (!fspathcmp(path->buf, alt->path))
+ for (odb = o->odb; odb; odb = odb->next) {
+ if (!fspathcmp(path->buf, odb->path))
return 0;
}
if (!fspathcmp(path->buf, normalized_objdir))
@@ -402,7 +398,7 @@ static int alt_odb_usable(struct raw_object_store *o,
* Prepare alternate object database registry.
*
* The variable alt_odb_list points at the list of struct
- * alternate_object_database. The elements on this list come from
+ * object_directory. The elements on this list come from
* non-empty elements from colon separated ALTERNATE_DB_ENVIRONMENT
* environment variable, and $GIT_OBJECT_DIRECTORY/info/alternates,
* whose contents is similar to that environment variable but can be
@@ -419,7 +415,7 @@ static void read_info_alternates(struct repository *r,
static int link_alt_odb_entry(struct repository *r, const char *entry,
const char *relative_base, int depth, const char *normalized_objdir)
{
- struct alternate_object_database *ent;
+ struct object_directory *ent;
struct strbuf pathbuf = STRBUF_INIT;
if (!is_absolute_path(entry) && relative_base) {
@@ -447,11 +443,12 @@ static int link_alt_odb_entry(struct repository *r, const char *entry,
return -1;
}
- ent = alloc_alt_odb(pathbuf.buf);
+ ent = xcalloc(1, sizeof(*ent));
+ ent->path = xstrdup(pathbuf.buf);
/* add the alternate entry */
- *r->objects->alt_odb_tail = ent;
- r->objects->alt_odb_tail = &(ent->next);
+ *r->objects->odb_tail = ent;
+ r->objects->odb_tail = &(ent->next);
ent->next = NULL;
/* recursively add alternates */
@@ -505,7 +502,7 @@ static void link_alt_odb_entries(struct repository *r, const char *alt,
return;
}
- strbuf_add_absolute_path(&objdirbuf, r->objects->objectdir);
+ strbuf_add_absolute_path(&objdirbuf, r->objects->odb->path);
if (strbuf_normalize_path(&objdirbuf) < 0)
die(_("unable to normalize object directory: %s"),
objdirbuf.buf);
@@ -540,18 +537,6 @@ static void read_info_alternates(struct repository *r,
free(path);
}
-struct alternate_object_database *alloc_alt_odb(const char *dir)
-{
- struct alternate_object_database *ent;
-
- FLEX_ALLOC_STR(ent, path, dir);
- strbuf_init(&ent->scratch, 0);
- strbuf_addf(&ent->scratch, "%s/", dir);
- ent->base_len = ent->scratch.len;
-
- return ent;
-}
-
void add_to_alternates_file(const char *reference)
{
struct lock_file lock = LOCK_INIT;
@@ -588,7 +573,7 @@ void add_to_alternates_file(const char *reference)
fprintf_or_die(out, "%s\n", reference);
if (commit_lock_file(&lock))
die_errno(_("unable to move new alternates file into place"));
- if (the_repository->objects->alt_odb_tail)
+ if (the_repository->objects->loaded_alternates)
link_alt_odb_entries(the_repository, reference,
'\n', NULL, 0);
}
@@ -684,11 +669,11 @@ out:
int foreach_alt_odb(alt_odb_fn fn, void *cb)
{
- struct alternate_object_database *ent;
+ struct object_directory *ent;
int r = 0;
prepare_alt_odb(the_repository);
- for (ent = the_repository->objects->alt_odb_list; ent; ent = ent->next) {
+ for (ent = the_repository->objects->odb->next; ent; ent = ent->next) {
r = fn(ent, cb);
if (r)
break;
@@ -698,13 +683,13 @@ int foreach_alt_odb(alt_odb_fn fn, void *cb)
void prepare_alt_odb(struct repository *r)
{
- if (r->objects->alt_odb_tail)
+ if (r->objects->loaded_alternates)
return;
- r->objects->alt_odb_tail = &r->objects->alt_odb_list;
link_alt_odb_entries(r, r->objects->alternate_db, PATH_SEP, NULL, 0);
- read_info_alternates(r, r->objects->objectdir, 0);
+ read_info_alternates(r, r->objects->odb->path, 0);
+ r->objects->loaded_alternates = 1;
}
/* Returns 1 if we have successfully freshened the file, 0 otherwise. */
@@ -731,23 +716,27 @@ int check_and_freshen_file(const char *fn, int freshen)
return 1;
}
-static int check_and_freshen_local(const struct object_id *oid, int freshen)
+static int check_and_freshen_odb(struct object_directory *odb,
+ const struct object_id *oid,
+ int freshen)
{
- static struct strbuf buf = STRBUF_INIT;
-
- strbuf_reset(&buf);
- sha1_file_name(the_repository, &buf, oid->hash);
+ static struct strbuf path = STRBUF_INIT;
+ odb_loose_path(odb, &path, oid->hash);
+ return check_and_freshen_file(path.buf, freshen);
+}
- return check_and_freshen_file(buf.buf, freshen);
+static int check_and_freshen_local(const struct object_id *oid, int freshen)
+{
+ return check_and_freshen_odb(the_repository->objects->odb, oid, freshen);
}
static int check_and_freshen_nonlocal(const struct object_id *oid, int freshen)
{
- struct alternate_object_database *alt;
+ struct object_directory *odb;
+
prepare_alt_odb(the_repository);
- for (alt = the_repository->objects->alt_odb_list; alt; alt = alt->next) {
- const char *path = alt_sha1_path(alt, oid->hash);
- if (check_and_freshen_file(path, freshen))
+ for (odb = the_repository->objects->odb->next; odb; odb = odb->next) {
+ if (check_and_freshen_odb(odb, oid, freshen))
return 1;
}
return 0;
@@ -825,7 +814,7 @@ int check_object_signature(const struct object_id *oid, void *map,
if (map) {
hash_object_file(map, size, type, &real_oid);
- return oidcmp(oid, &real_oid) ? -1 : 0;
+ return !oideq(oid, &real_oid) ? -1 : 0;
}
st = open_istream(oid, &obj_type, &size, NULL);
@@ -833,7 +822,7 @@ int check_object_signature(const struct object_id *oid, void *map,
return -1;
/* Generate the header */
- hdrlen = xsnprintf(hdr, sizeof(hdr), "%s %lu", type_name(obj_type), size) + 1;
+ hdrlen = xsnprintf(hdr, sizeof(hdr), "%s %"PRIuMAX , type_name(obj_type), (uintmax_t)size) + 1;
/* Sha1.. */
the_hash_algo->init_fn(&c);
@@ -852,7 +841,7 @@ int check_object_signature(const struct object_id *oid, void *map,
}
the_hash_algo->final_fn(real_oid.hash, &c);
close_istream(st);
- return oidcmp(oid, &real_oid) ? -1 : 0;
+ return !oideq(oid, &real_oid) ? -1 : 0;
}
int git_open_cloexec(const char *name, int flags)
@@ -888,25 +877,17 @@ int git_open_cloexec(const char *name, int flags)
*
* The "path" out-parameter will give the path of the object we found (if any).
* Note that it may point to static storage and is only valid until another
- * call to sha1_file_name(), etc.
+ * call to stat_sha1_file().
*/
static int stat_sha1_file(struct repository *r, const unsigned char *sha1,
struct stat *st, const char **path)
{
- struct alternate_object_database *alt;
+ struct object_directory *odb;
static struct strbuf buf = STRBUF_INIT;
- strbuf_reset(&buf);
- sha1_file_name(r, &buf, sha1);
- *path = buf.buf;
-
- if (!lstat(*path, st))
- return 0;
-
prepare_alt_odb(r);
- errno = ENOENT;
- for (alt = r->objects->alt_odb_list; alt; alt = alt->next) {
- *path = alt_sha1_path(alt, sha1);
+ for (odb = r->objects->odb; odb; odb = odb->next) {
+ *path = odb_loose_path(odb, &buf, sha1);
if (!lstat(*path, st))
return 0;
}
@@ -922,25 +903,17 @@ static int open_sha1_file(struct repository *r,
const unsigned char *sha1, const char **path)
{
int fd;
- struct alternate_object_database *alt;
- int most_interesting_errno;
+ struct object_directory *odb;
+ int most_interesting_errno = ENOENT;
static struct strbuf buf = STRBUF_INIT;
- strbuf_reset(&buf);
- sha1_file_name(r, &buf, sha1);
- *path = buf.buf;
-
- fd = git_open(*path);
- if (fd >= 0)
- return fd;
- most_interesting_errno = errno;
-
prepare_alt_odb(r);
- for (alt = r->objects->alt_odb_list; alt; alt = alt->next) {
- *path = alt_sha1_path(alt, sha1);
+ for (odb = r->objects->odb; odb; odb = odb->next) {
+ *path = odb_loose_path(odb, &buf, sha1);
fd = git_open(*path);
if (fd >= 0)
return fd;
+
if (most_interesting_errno == ENOENT)
most_interesting_errno = errno;
}
@@ -948,6 +921,22 @@ static int open_sha1_file(struct repository *r,
return -1;
}
+static int quick_has_loose(struct repository *r,
+ const unsigned char *sha1)
+{
+ struct object_id oid;
+ struct object_directory *odb;
+
+ hashcpy(oid.hash, sha1);
+
+ prepare_alt_odb(r);
+ for (odb = r->objects->odb; odb; odb = odb->next) {
+ if (oid_array_lookup(odb_loose_cache(odb, &oid), &oid) >= 0)
+ return 1;
+ }
+ return 0;
+}
+
/*
* Map the loose object at "path" if it is not NULL, or the path found by
* searching for a loose object named "sha1".
@@ -971,6 +960,7 @@ static void *map_sha1_file_1(struct repository *r, const char *path,
if (!*size) {
/* mmap() is forbidden on empty files */
error(_("object file %s is empty"), path);
+ close(fd);
return NULL;
}
map = xmmap(NULL, *size, PROT_READ, MAP_PRIVATE, fd, 0);
@@ -1198,6 +1188,8 @@ static int sha1_loose_object_info(struct repository *r,
if (!oi->typep && !oi->type_name && !oi->sizep && !oi->contentp) {
const char *path;
struct stat st;
+ if (!oi->disk_sizep && (flags & OBJECT_INFO_QUICK))
+ return quick_has_loose(r, sha1) ? 0 : -1;
if (stat_sha1_file(r, sha1, &st, &path) < 0)
return -1;
if (oi->disk_sizep)
@@ -1492,7 +1484,7 @@ static void write_object_file_prepare(const void *buf, unsigned long len,
git_hash_ctx c;
/* Generate the header */
- *hdrlen = xsnprintf(hdr, *hdrlen, "%s %lu", type, len)+1;
+ *hdrlen = xsnprintf(hdr, *hdrlen, "%s %"PRIuMAX , type, (uintmax_t)len)+1;
/* Sha1.. */
the_hash_algo->init_fn(&c);
@@ -1626,8 +1618,7 @@ static int write_loose_object(const struct object_id *oid, char *hdr,
static struct strbuf tmp_file = STRBUF_INIT;
static struct strbuf filename = STRBUF_INIT;
- strbuf_reset(&filename);
- sha1_file_name(the_repository, &filename, oid->hash);
+ loose_object_path(the_repository, &filename, oid->hash);
fd = create_tmpfile(&tmp_file, filename.buf);
if (fd < 0) {
@@ -1671,7 +1662,7 @@ static int write_loose_object(const struct object_id *oid, char *hdr,
die(_("deflateEnd on object %s failed (%d)"), oid_to_hex(oid),
ret);
the_hash_algo->final_fn(parano_oid.hash, &c);
- if (oidcmp(oid, &parano_oid) != 0)
+ if (!oideq(oid, &parano_oid))
die(_("confused by unstable object source data for %s"),
oid_to_hex(oid));
@@ -1758,7 +1749,7 @@ int force_object_loose(const struct object_id *oid, time_t mtime)
buf = read_object(oid->hash, &type, &len);
if (!buf)
return error(_("cannot read sha1_file for %s"), oid_to_hex(oid));
- hdrlen = xsnprintf(hdr, sizeof(hdr), "%s %lu", type_name(type), len) + 1;
+ hdrlen = xsnprintf(hdr, sizeof(hdr), "%s %"PRIuMAX , type_name(type), (uintmax_t)len) + 1;
ret = write_loose_object(oid, hdr, hdrlen, buf, len, mtime);
free(buf);
@@ -1813,7 +1804,8 @@ static void check_tag(const void *buf, size_t size)
die(_("corrupt tag"));
}
-static int index_mem(struct object_id *oid, void *buf, size_t size,
+static int index_mem(struct index_state *istate,
+ struct object_id *oid, void *buf, size_t size,
enum object_type type,
const char *path, unsigned flags)
{
@@ -1828,7 +1820,7 @@ static int index_mem(struct object_id *oid, void *buf, size_t size,
*/
if ((type == OBJ_BLOB) && path) {
struct strbuf nbuf = STRBUF_INIT;
- if (convert_to_git(&the_index, path, buf, size, &nbuf,
+ if (convert_to_git(istate, path, buf, size, &nbuf,
get_conv_flags(flags))) {
buf = strbuf_detach(&nbuf, &size);
re_allocated = 1;
@@ -1852,17 +1844,20 @@ static int index_mem(struct object_id *oid, void *buf, size_t size,
return ret;
}
-static int index_stream_convert_blob(struct object_id *oid, int fd,
- const char *path, unsigned flags)
+static int index_stream_convert_blob(struct index_state *istate,
+ struct object_id *oid,
+ int fd,
+ const char *path,
+ unsigned flags)
{
int ret;
const int write_object = flags & HASH_WRITE_OBJECT;
struct strbuf sbuf = STRBUF_INIT;
assert(path);
- assert(would_convert_to_git_filter_fd(&the_index, path));
+ assert(would_convert_to_git_filter_fd(istate, path));
- convert_to_git_filter_fd(&the_index, path, fd, &sbuf,
+ convert_to_git_filter_fd(istate, path, fd, &sbuf,
get_conv_flags(flags));
if (write_object)
@@ -1875,14 +1870,15 @@ static int index_stream_convert_blob(struct object_id *oid, int fd,
return ret;
}
-static int index_pipe(struct object_id *oid, int fd, enum object_type type,
+static int index_pipe(struct index_state *istate, struct object_id *oid,
+ int fd, enum object_type type,
const char *path, unsigned flags)
{
struct strbuf sbuf = STRBUF_INIT;
int ret;
if (strbuf_read(&sbuf, fd, 4096) >= 0)
- ret = index_mem(oid, sbuf.buf, sbuf.len, type, path, flags);
+ ret = index_mem(istate, oid, sbuf.buf, sbuf.len, type, path, flags);
else
ret = -1;
strbuf_release(&sbuf);
@@ -1891,14 +1887,15 @@ static int index_pipe(struct object_id *oid, int fd, enum object_type type,
#define SMALL_FILE_SIZE (32*1024)
-static int index_core(struct object_id *oid, int fd, size_t size,
+static int index_core(struct index_state *istate,
+ struct object_id *oid, int fd, size_t size,
enum object_type type, const char *path,
unsigned flags)
{
int ret;
if (!size) {
- ret = index_mem(oid, "", size, type, path, flags);
+ ret = index_mem(istate, oid, "", size, type, path, flags);
} else if (size <= SMALL_FILE_SIZE) {
char *buf = xmalloc(size);
ssize_t read_result = read_in_full(fd, buf, size);
@@ -1909,11 +1906,11 @@ static int index_core(struct object_id *oid, int fd, size_t size,
ret = error(_("short read while indexing %s"),
path ? path : "<unknown>");
else
- ret = index_mem(oid, buf, size, type, path, flags);
+ ret = index_mem(istate, oid, buf, size, type, path, flags);
free(buf);
} else {
void *buf = xmmap(NULL, size, PROT_READ, MAP_PRIVATE, fd, 0);
- ret = index_mem(oid, buf, size, type, path, flags);
+ ret = index_mem(istate, oid, buf, size, type, path, flags);
munmap(buf, size);
}
return ret;
@@ -1941,7 +1938,8 @@ static int index_stream(struct object_id *oid, int fd, size_t size,
return index_bulk_checkin(oid, fd, size, type, path, flags);
}
-int index_fd(struct object_id *oid, int fd, struct stat *st,
+int index_fd(struct index_state *istate, struct object_id *oid,
+ int fd, struct stat *st,
enum object_type type, const char *path, unsigned flags)
{
int ret;
@@ -1950,14 +1948,14 @@ int index_fd(struct object_id *oid, int fd, struct stat *st,
* Call xsize_t() only when needed to avoid potentially unnecessary
* die() for large files.
*/
- if (type == OBJ_BLOB && path && would_convert_to_git_filter_fd(&the_index, path))
- ret = index_stream_convert_blob(oid, fd, path, flags);
+ if (type == OBJ_BLOB && path && would_convert_to_git_filter_fd(istate, path))
+ ret = index_stream_convert_blob(istate, oid, fd, path, flags);
else if (!S_ISREG(st->st_mode))
- ret = index_pipe(oid, fd, type, path, flags);
+ ret = index_pipe(istate, oid, fd, type, path, flags);
else if (st->st_size <= big_file_threshold || type != OBJ_BLOB ||
- (path && would_convert_to_git(&the_index, path)))
- ret = index_core(oid, fd, xsize_t(st->st_size), type, path,
- flags);
+ (path && would_convert_to_git(istate, path)))
+ ret = index_core(istate, oid, fd, xsize_t(st->st_size),
+ type, path, flags);
else
ret = index_stream(oid, fd, xsize_t(st->st_size), type, path,
flags);
@@ -1965,7 +1963,8 @@ int index_fd(struct object_id *oid, int fd, struct stat *st,
return ret;
}
-int index_path(struct object_id *oid, const char *path, struct stat *st, unsigned flags)
+int index_path(struct index_state *istate, struct object_id *oid,
+ const char *path, struct stat *st, unsigned flags)
{
int fd;
struct strbuf sb = STRBUF_INIT;
@@ -1976,7 +1975,7 @@ int index_path(struct object_id *oid, const char *path, struct stat *st, unsigne
fd = open(path, O_RDONLY);
if (fd < 0)
return error_errno("open(\"%s\")", path);
- if (index_fd(oid, fd, st, OBJ_BLOB, path, flags) < 0)
+ if (index_fd(istate, oid, fd, st, OBJ_BLOB, path, flags) < 0)
return error(_("%s: failed to insert into database"),
path);
break;
@@ -2126,43 +2125,63 @@ int for_each_loose_file_in_objdir(const char *path,
return r;
}
-struct loose_alt_odb_data {
- each_loose_object_fn *cb;
- void *data;
-};
+int for_each_loose_object(each_loose_object_fn cb, void *data,
+ enum for_each_object_flags flags)
+{
+ struct object_directory *odb;
+
+ prepare_alt_odb(the_repository);
+ for (odb = the_repository->objects->odb; odb; odb = odb->next) {
+ int r = for_each_loose_file_in_objdir(odb->path, cb, NULL,
+ NULL, data);
+ if (r)
+ return r;
+
+ if (flags & FOR_EACH_OBJECT_LOCAL_ONLY)
+ break;
+ }
+
+ return 0;
+}
-static int loose_from_alt_odb(struct alternate_object_database *alt,
- void *vdata)
+static int append_loose_object(const struct object_id *oid, const char *path,
+ void *data)
{
- struct loose_alt_odb_data *data = vdata;
+ oid_array_append(data, oid);
+ return 0;
+}
+
+struct oid_array *odb_loose_cache(struct object_directory *odb,
+ const struct object_id *oid)
+{
+ int subdir_nr = oid->hash[0];
struct strbuf buf = STRBUF_INIT;
- int r;
- strbuf_addstr(&buf, alt->path);
- r = for_each_loose_file_in_objdir_buf(&buf,
- data->cb, NULL, NULL,
- data->data);
+ if (subdir_nr < 0 ||
+ subdir_nr >= ARRAY_SIZE(odb->loose_objects_subdir_seen))
+ BUG("subdir_nr out of range");
+
+ if (odb->loose_objects_subdir_seen[subdir_nr])
+ return &odb->loose_objects_cache[subdir_nr];
+
+ strbuf_addstr(&buf, odb->path);
+ for_each_file_in_obj_subdir(subdir_nr, &buf,
+ append_loose_object,
+ NULL, NULL,
+ &odb->loose_objects_cache[subdir_nr]);
+ odb->loose_objects_subdir_seen[subdir_nr] = 1;
strbuf_release(&buf);
- return r;
+ return &odb->loose_objects_cache[subdir_nr];
}
-int for_each_loose_object(each_loose_object_fn cb, void *data,
- enum for_each_object_flags flags)
+void odb_clear_loose_cache(struct object_directory *odb)
{
- struct loose_alt_odb_data alt;
- int r;
-
- r = for_each_loose_file_in_objdir(get_object_directory(),
- cb, NULL, NULL, data);
- if (r)
- return r;
-
- if (flags & FOR_EACH_OBJECT_LOCAL_ONLY)
- return 0;
+ int i;
- alt.cb = cb;
- alt.data = data;
- return foreach_alt_odb(loose_from_alt_odb, &alt);
+ for (i = 0; i < ARRAY_SIZE(odb->loose_objects_cache); i++)
+ oid_array_clear(&odb->loose_objects_cache[i]);
+ memset(&odb->loose_objects_subdir_seen, 0,
+ sizeof(odb->loose_objects_subdir_seen));
}
static int check_stream_sha1(git_zstream *stream,
@@ -2214,7 +2233,7 @@ static int check_stream_sha1(git_zstream *stream,
}
the_hash_algo->final_fn(real_sha1, &c);
- if (hashcmp(expected_sha1, real_sha1)) {
+ if (!hasheq(expected_sha1, real_sha1)) {
error(_("sha1 mismatch for %s (expected %s)"), path,
sha1_to_hex(expected_sha1));
return -1;