if (!refs_resolve_ref_unsafe(&refs->base,
refname.buf,
RESOLVE_REF_READING,
- oid.hash, &flag)) {
+ &oid, &flag)) {
oidclr(&oid);
flag |= REF_ISBROKEN;
} else if (is_null_oid(&oid)) {
}
static int files_read_raw_ref(struct ref_store *ref_store,
- const char *refname, unsigned char *sha1,
+ const char *refname, struct object_id *oid,
struct strbuf *referent, unsigned int *type)
{
struct files_ref_store *refs =
struct strbuf sb_path = STRBUF_INIT;
const char *path;
const char *buf;
+ const char *p;
struct stat st;
int fd;
int ret = -1;
if (errno != ENOENT)
goto out;
if (refs_read_raw_ref(refs->packed_ref_store, refname,
- sha1, referent, type)) {
+ oid, referent, type)) {
errno = ENOENT;
goto out;
}
* packed ref:
*/
if (refs_read_raw_ref(refs->packed_ref_store, refname,
- sha1, referent, type)) {
+ oid, referent, type)) {
errno = EISDIR;
goto out;
}
* Please note that FETCH_HEAD has additional
* data after the sha.
*/
- if (get_sha1_hex(buf, sha1) ||
- (buf[40] != '\0' && !isspace(buf[40]))) {
+ if (parse_oid_hex(buf, oid, &p) ||
+ (*p != '\0' && !isspace(*p))) {
*type |= REF_ISBROKEN;
errno = EINVAL;
goto out;
*/
if (files_read_raw_ref(&refs->base, refname,
- lock->old_oid.hash, referent, type)) {
+ &lock->old_oid, referent, type)) {
if (errno == ENOENT) {
if (mustexist) {
/* Garden variety missing reference. */
return ret;
}
-static int files_peel_ref(struct ref_store *ref_store,
- const char *refname, unsigned char *sha1)
-{
- struct files_ref_store *refs =
- files_downcast(ref_store, REF_STORE_READ | REF_STORE_ODB,
- "peel_ref");
- int flag;
- unsigned char base[20];
-
- if (current_ref_iter && current_ref_iter->refname == refname) {
- struct object_id peeled;
-
- if (ref_iterator_peel(current_ref_iter, &peeled))
- return -1;
- hashcpy(sha1, peeled.hash);
- return 0;
- }
-
- if (refs_read_ref_full(ref_store, refname,
- RESOLVE_REF_READING, base, &flag))
- return -1;
-
- /*
- * If the reference is packed, read its ref_entry from the
- * cache in the hope that we already know its peeled value.
- * We only try this optimization on packed references because
- * (a) forcing the filling of the loose reference cache could
- * be expensive and (b) loose references anyway usually do not
- * have REF_KNOWS_PEELED.
- */
- if (flag & REF_ISPACKED &&
- !refs_peel_ref(refs->packed_ref_store, refname, sha1))
- return 0;
-
- return peel_object(base, sha1);
-}
-
struct files_ref_iterator {
struct ref_iterator base;
const char *prefix, unsigned int flags)
{
struct files_ref_store *refs;
- struct ref_iterator *loose_iter, *packed_iter;
+ struct ref_iterator *loose_iter, *packed_iter, *overlay_iter;
struct files_ref_iterator *iter;
struct ref_iterator *ref_iterator;
unsigned int required_flags = REF_STORE_READ;
refs = files_downcast(ref_store, required_flags, "ref_iterator_begin");
- iter = xcalloc(1, sizeof(*iter));
- ref_iterator = &iter->base;
- base_ref_iterator_init(ref_iterator, &files_ref_iterator_vtable);
-
/*
* We must make sure that all loose refs are read before
* accessing the packed-refs file; this avoids a race
refs->packed_ref_store, prefix, 0,
DO_FOR_EACH_INCLUDE_BROKEN);
- iter->iter0 = overlay_ref_iterator_begin(loose_iter, packed_iter);
+ overlay_iter = overlay_ref_iterator_begin(loose_iter, packed_iter);
+
+ iter = xcalloc(1, sizeof(*iter));
+ ref_iterator = &iter->base;
+ base_ref_iterator_init(ref_iterator, &files_ref_iterator_vtable,
+ overlay_iter->ordered);
+ iter->iter0 = overlay_iter;
iter->flags = flags;
return ref_iterator;
}
/*
- * Verify that the reference locked by lock has the value old_sha1.
- * Fail if the reference doesn't exist and mustexist is set. Return 0
- * on success. On error, write an error message to err, set errno, and
- * return a negative value.
+ * Verify that the reference locked by lock has the value old_oid
+ * (unless it is NULL). Fail if the reference doesn't exist and
+ * mustexist is set. Return 0 on success. On error, write an error
+ * message to err, set errno, and return a negative value.
*/
static int verify_lock(struct ref_store *ref_store, struct ref_lock *lock,
- const unsigned char *old_sha1, int mustexist,
+ const struct object_id *old_oid, int mustexist,
struct strbuf *err)
{
assert(err);
if (refs_read_ref_full(ref_store, lock->ref_name,
mustexist ? RESOLVE_REF_READING : 0,
- lock->old_oid.hash, NULL)) {
- if (old_sha1) {
+ &lock->old_oid, NULL)) {
+ if (old_oid) {
int save_errno = errno;
strbuf_addf(err, "can't verify ref '%s'", lock->ref_name);
errno = save_errno;
return 0;
}
}
- if (old_sha1 && hashcmp(lock->old_oid.hash, old_sha1)) {
+ if (old_oid && oidcmp(&lock->old_oid, old_oid)) {
strbuf_addf(err, "ref '%s' is at %s but expected %s",
lock->ref_name,
oid_to_hex(&lock->old_oid),
- sha1_to_hex(old_sha1));
+ oid_to_hex(old_oid));
errno = EBUSY;
return -1;
}
* Locks a ref returning the lock on success and NULL on failure.
* On failure errno is set to something meaningful.
*/
-static struct ref_lock *lock_ref_sha1_basic(struct files_ref_store *refs,
- const char *refname,
- const unsigned char *old_sha1,
- const struct string_list *extras,
- const struct string_list *skip,
- unsigned int flags, int *type,
- struct strbuf *err)
+static struct ref_lock *lock_ref_oid_basic(struct files_ref_store *refs,
+ const char *refname,
+ const struct object_id *old_oid,
+ const struct string_list *extras,
+ const struct string_list *skip,
+ unsigned int flags, int *type,
+ struct strbuf *err)
{
struct strbuf ref_file = STRBUF_INIT;
struct ref_lock *lock;
int last_errno = 0;
- int mustexist = (old_sha1 && !is_null_sha1(old_sha1));
+ int mustexist = (old_oid && !is_null_oid(old_oid));
int resolve_flags = RESOLVE_REF_NO_RECURSE;
int resolved;
- files_assert_main_repository(refs, "lock_ref_sha1_basic");
+ files_assert_main_repository(refs, "lock_ref_oid_basic");
assert(err);
lock = xcalloc(1, sizeof(struct ref_lock));
files_ref_path(refs, &ref_file, refname);
resolved = !!refs_resolve_ref_unsafe(&refs->base,
refname, resolve_flags,
- lock->old_oid.hash, type);
+ &lock->old_oid, type);
if (!resolved && errno == EISDIR) {
/*
* we are trying to lock foo but we used to
}
resolved = !!refs_resolve_ref_unsafe(&refs->base,
refname, resolve_flags,
- lock->old_oid.hash, type);
+ &lock->old_oid, type);
}
if (!resolved) {
last_errno = errno;
goto error_return;
}
- if (verify_lock(&refs->base, lock, old_sha1, mustexist, err)) {
+ if (verify_lock(&refs->base, lock, old_oid, mustexist, err)) {
last_errno = errno;
goto error_return;
}
struct ref_to_prune {
struct ref_to_prune *next;
- unsigned char sha1[20];
+ struct object_id oid;
char name[FLEX_ARRAY];
};
transaction = ref_store_transaction_begin(&refs->base, &err);
if (!transaction ||
- ref_transaction_delete(transaction, r->name, r->sha1,
+ ref_transaction_delete(transaction, r->name, &r->oid,
REF_ISPRUNING | REF_NODEREF, NULL, &err) ||
ref_transaction_commit(transaction, &err)) {
ref_transaction_free(transaction);
* packed-refs transaction:
*/
if (ref_transaction_update(transaction, iter->refname,
- iter->oid->hash, NULL,
+ iter->oid, NULL,
REF_NODEREF, NULL, &err))
die("failure preparing to create packed reference %s: %s",
iter->refname, err.buf);
if ((flags & PACK_REFS_PRUNE)) {
struct ref_to_prune *n;
FLEX_ALLOC_STR(n, name, iter->refname);
- hashcpy(n->sha1, iter->oid->hash);
+ oidcpy(&n->oid, iter->oid);
n->next = refs_to_prune;
refs_to_prune = n;
}
const struct object_id *oid, const char *logmsg,
struct strbuf *err);
-static int files_rename_ref(struct ref_store *ref_store,
+static int files_copy_or_rename_ref(struct ref_store *ref_store,
const char *oldrefname, const char *newrefname,
- const char *logmsg)
+ const char *logmsg, int copy)
{
struct files_ref_store *refs =
files_downcast(ref_store, REF_STORE_WRITE, "rename_ref");
if (!refs_resolve_ref_unsafe(&refs->base, oldrefname,
RESOLVE_REF_READING | RESOLVE_REF_NO_RECURSE,
- orig_oid.hash, &flag)) {
+ &orig_oid, &flag)) {
ret = error("refname %s not found", oldrefname);
goto out;
}
if (flag & REF_ISSYMREF) {
- ret = error("refname %s is a symbolic ref, renaming it is not supported",
- oldrefname);
+ if (copy)
+ ret = error("refname %s is a symbolic ref, copying it is not supported",
+ oldrefname);
+ else
+ ret = error("refname %s is a symbolic ref, renaming it is not supported",
+ oldrefname);
goto out;
}
if (!refs_rename_ref_available(&refs->base, oldrefname, newrefname)) {
goto out;
}
- if (log && rename(sb_oldref.buf, tmp_renamed_log.buf)) {
+ if (!copy && log && rename(sb_oldref.buf, tmp_renamed_log.buf)) {
ret = error("unable to move logfile logs/%s to logs/"TMP_RENAMED_LOG": %s",
oldrefname, strerror(errno));
goto out;
}
- if (refs_delete_ref(&refs->base, logmsg, oldrefname,
- orig_oid.hash, REF_NODEREF)) {
+ if (copy && log && copy_file(tmp_renamed_log.buf, sb_oldref.buf, 0644)) {
+ ret = error("unable to copy logfile logs/%s to logs/"TMP_RENAMED_LOG": %s",
+ oldrefname, strerror(errno));
+ goto out;
+ }
+
+ if (!copy && refs_delete_ref(&refs->base, logmsg, oldrefname,
+ &orig_oid, REF_NODEREF)) {
error("unable to delete old %s", oldrefname);
goto rollback;
}
* the safety anyway; we want to delete the reference whatever
* its current value.
*/
- if (!refs_read_ref_full(&refs->base, newrefname,
+ if (!copy && !refs_read_ref_full(&refs->base, newrefname,
RESOLVE_REF_READING | RESOLVE_REF_NO_RECURSE,
- oid.hash, NULL) &&
+ &oid, NULL) &&
refs_delete_ref(&refs->base, NULL, newrefname,
NULL, REF_NODEREF)) {
if (errno == EISDIR) {
logmoved = log;
- lock = lock_ref_sha1_basic(refs, newrefname, NULL, NULL, NULL,
- REF_NODEREF, NULL, &err);
+ lock = lock_ref_oid_basic(refs, newrefname, NULL, NULL, NULL,
+ REF_NODEREF, NULL, &err);
if (!lock) {
- error("unable to rename '%s' to '%s': %s", oldrefname, newrefname, err.buf);
+ if (copy)
+ error("unable to copy '%s' to '%s': %s", oldrefname, newrefname, err.buf);
+ else
+ error("unable to rename '%s' to '%s': %s", oldrefname, newrefname, err.buf);
strbuf_release(&err);
goto rollback;
}
goto out;
rollback:
- lock = lock_ref_sha1_basic(refs, oldrefname, NULL, NULL, NULL,
- REF_NODEREF, NULL, &err);
+ lock = lock_ref_oid_basic(refs, oldrefname, NULL, NULL, NULL,
+ REF_NODEREF, NULL, &err);
if (!lock) {
error("unable to lock %s for rollback: %s", oldrefname, err.buf);
strbuf_release(&err);
return ret;
}
+static int files_rename_ref(struct ref_store *ref_store,
+ const char *oldrefname, const char *newrefname,
+ const char *logmsg)
+{
+ return files_copy_or_rename_ref(ref_store, oldrefname,
+ newrefname, logmsg, 0);
+}
+
+static int files_copy_ref(struct ref_store *ref_store,
+ const char *oldrefname, const char *newrefname,
+ const char *logmsg)
+{
+ return files_copy_or_rename_ref(ref_store, oldrefname,
+ newrefname, logmsg, 1);
+}
+
static int close_ref_gently(struct ref_lock *lock)
{
if (close_lock_file_gently(&lock->lk))
written = len <= maxlen ? write_in_full(fd, logrec, len) : -1;
free(logrec);
- if (written != len)
+ if (written < 0)
return -1;
return 0;
return -1;
}
fd = get_lock_file_fd(&lock->lk);
- if (write_in_full(fd, oid_to_hex(oid), GIT_SHA1_HEXSZ) != GIT_SHA1_HEXSZ ||
- write_in_full(fd, &term, 1) != 1 ||
+ if (write_in_full(fd, oid_to_hex(oid), GIT_SHA1_HEXSZ) < 0 ||
+ write_in_full(fd, &term, 1) < 0 ||
close_ref_gently(lock) < 0) {
strbuf_addf(err,
"couldn't write '%s'", get_lock_file_path(&lock->lk));
struct object_id new_oid;
if (logmsg &&
!refs_read_ref_full(&refs->base, target,
- RESOLVE_REF_READING, new_oid.hash, NULL) &&
+ RESOLVE_REF_READING, &new_oid, NULL) &&
files_log_ref_write(refs, refname, &lock->old_oid,
&new_oid, logmsg, 0, &err)) {
error("%s", err.buf);
struct ref_lock *lock;
int ret;
- lock = lock_ref_sha1_basic(refs, refname, NULL,
- NULL, NULL, REF_NODEREF, NULL,
- &err);
+ lock = lock_ref_oid_basic(refs, refname, NULL,
+ NULL, NULL, REF_NODEREF, NULL,
+ &err);
if (!lock) {
error("%s", err.buf);
strbuf_release(&err);
if (refs_read_ref_full(iter->ref_store,
diter->relative_path, 0,
- iter->oid.hash, &flags)) {
+ &iter->oid, &flags)) {
error("bad ref for %s", diter->path.buf);
continue;
}
struct ref_iterator *ref_iterator = &iter->base;
struct strbuf sb = STRBUF_INIT;
- base_ref_iterator_init(ref_iterator, &files_reflog_iterator_vtable);
+ base_ref_iterator_init(ref_iterator, &files_reflog_iterator_vtable, 0);
strbuf_addf(&sb, "%s/logs", gitdir);
iter->dir_iterator = dir_iterator_begin(sb.buf);
iter->ref_store = ref_store;
return reflog_iterator_begin(ref_store, refs->gitcommondir);
} else {
return merge_ref_iterator_begin(
+ 0,
reflog_iterator_begin(ref_store, refs->gitdir),
reflog_iterator_begin(ref_store, refs->gitcommondir),
reflog_iterator_select, refs);
new_update = ref_transaction_add_update(
transaction, "HEAD",
update->flags | REF_LOG_ONLY | REF_NODEREF,
- update->new_oid.hash, update->old_oid.hash,
+ &update->new_oid, &update->old_oid,
update->msg);
/*
new_update = ref_transaction_add_update(
transaction, referent, new_flags,
- update->new_oid.hash, update->old_oid.hash,
+ &update->new_oid, &update->old_oid,
update->msg);
new_update->parent_update = update;
*/
if (refs_read_ref_full(&refs->base,
referent.buf, 0,
- lock->old_oid.hash, NULL)) {
+ &lock->old_oid, NULL)) {
if (update->flags & REF_HAVE_OLD) {
strbuf_addf(err, "cannot lock ref '%s': "
"error reading reference",
struct string_list affected_refnames = STRING_LIST_INIT_NODUP;
char *head_ref = NULL;
int head_type;
- struct object_id head_oid;
struct files_transaction_backend_data *backend_data;
struct ref_transaction *packed_transaction = NULL;
*/
head_ref = refs_resolve_refdup(ref_store, "HEAD",
RESOLVE_REF_NO_RECURSE,
- head_oid.hash, &head_type);
+ NULL, &head_type);
if (head_ref && !(head_type & REF_ISSYMREF)) {
FREE_AND_NULL(head_ref);
ret = lock_ref_for_update(refs, update, transaction,
head_ref, &affected_refnames, err);
if (ret)
- break;
+ goto cleanup;
if (update->flags & REF_DELETING &&
!(update->flags & REF_LOG_ONLY) &&
ref_transaction_add_update(
packed_transaction, update->refname,
update->flags & ~REF_HAVE_OLD,
- update->new_oid.hash, update->old_oid.hash,
+ &update->new_oid, &update->old_oid,
NULL);
}
}
*/
ref_transaction_add_update(packed_transaction, update->refname,
update->flags & ~REF_HAVE_OLD,
- update->new_oid.hash, update->old_oid.hash,
+ &update->new_oid, &update->old_oid,
NULL);
}
}
static int files_reflog_expire(struct ref_store *ref_store,
- const char *refname, const unsigned char *sha1,
+ const char *refname, const struct object_id *oid,
unsigned int flags,
reflog_expiry_prepare_fn prepare_fn,
reflog_expiry_should_prune_fn should_prune_fn,
int status = 0;
int type;
struct strbuf err = STRBUF_INIT;
- struct object_id oid;
memset(&cb, 0, sizeof(cb));
cb.flags = flags;
* reference itself, plus we might need to update the
* reference if --updateref was specified:
*/
- lock = lock_ref_sha1_basic(refs, refname, sha1,
- NULL, NULL, REF_NODEREF,
- &type, &err);
+ lock = lock_ref_oid_basic(refs, refname, oid,
+ NULL, NULL, REF_NODEREF,
+ &type, &err);
if (!lock) {
error("cannot lock ref '%s': %s", refname, err.buf);
strbuf_release(&err);
}
}
- hashcpy(oid.hash, sha1);
-
- (*prepare_fn)(refname, &oid, cb.policy_cb);
+ (*prepare_fn)(refname, oid, cb.policy_cb);
refs_for_each_reflog_ent(ref_store, refname, expire_reflog_ent, &cb);
(*cleanup_fn)(cb.policy_cb);
rollback_lock_file(&reflog_lock);
} else if (update &&
(write_in_full(get_lock_file_fd(&lock->lk),
- oid_to_hex(&cb.last_kept_oid), GIT_SHA1_HEXSZ) != GIT_SHA1_HEXSZ ||
- write_str_in_full(get_lock_file_fd(&lock->lk), "\n") != 1 ||
+ oid_to_hex(&cb.last_kept_oid), GIT_SHA1_HEXSZ) < 0 ||
+ write_str_in_full(get_lock_file_fd(&lock->lk), "\n") < 0 ||
close_ref_gently(lock) < 0)) {
status |= error("couldn't write %s",
get_lock_file_path(&lock->lk));
files_initial_transaction_commit,
files_pack_refs,
- files_peel_ref,
files_create_symref,
files_delete_refs,
files_rename_ref,
+ files_copy_ref,
files_ref_iterator_begin,
files_read_raw_ref,