#include "refs.h"
#include "refs/refs-internal.h"
#include "run-command.h"
+#include "hook.h"
#include "object-store.h"
#include "object.h"
#include "tag.h"
return NULL;
}
-int ref_storage_backend_exists(const char *name)
-{
- return find_ref_storage_backend(name) != NULL;
-}
-
/*
* How to handle various characters in refnames:
* 0: An acceptable character for refs
* does not exist, emit a warning and return false.
*/
int ref_resolves_to_object(const char *refname,
+ struct repository *repo,
const struct object_id *oid,
unsigned int flags)
{
if (flags & REF_ISBROKEN)
return 0;
- if (!has_object_file(oid)) {
+ if (!repo_has_object_file(repo, oid)) {
error(_("%s does not point to a valid object!"), refname);
return 0;
}
struct object_id *oid, int *flags)
{
const char *result;
+ int ignore_errno;
result = refs_resolve_ref_unsafe(refs, refname, resolve_flags,
- oid, flags);
+ oid, flags, &ignore_errno);
return xstrdup_or_null(result);
}
void *cb_data;
};
-int refs_read_ref_full(struct ref_store *refs, const char *refname,
- int resolve_flags, struct object_id *oid, int *flags)
+int read_ref_full(const char *refname, int resolve_flags, struct object_id *oid, int *flags)
{
- if (refs_resolve_ref_unsafe(refs, refname, resolve_flags, oid, flags))
+ int ignore_errno;
+ struct ref_store *refs = get_main_ref_store(the_repository);
+
+ if (refs_resolve_ref_unsafe(refs, refname, resolve_flags,
+ oid, flags, &ignore_errno))
return 0;
return -1;
}
-int read_ref_full(const char *refname, int resolve_flags, struct object_id *oid, int *flags)
-{
- return refs_read_ref_full(get_main_ref_store(the_repository), refname,
- resolve_flags, oid, flags);
-}
-
int read_ref(const char *refname, struct object_id *oid)
{
return read_ref_full(refname, RESOLVE_REF_READING, oid, NULL);
int refs_ref_exists(struct ref_store *refs, const char *refname)
{
- return !!refs_resolve_ref_unsafe(refs, refname, RESOLVE_REF_READING, NULL, NULL);
+ int ignore_errno;
+ return !!refs_resolve_ref_unsafe(refs, refname, RESOLVE_REF_READING,
+ NULL, NULL, &ignore_errno);
}
int ref_exists(const char *refname)
struct object_id oid_from_ref;
struct object_id *this_result;
int flag;
+ struct ref_store *refs = get_main_ref_store(repo);
+ int ignore_errno;
this_result = refs_found ? &oid_from_ref : oid;
strbuf_reset(&fullref);
strbuf_addf(&fullref, *p, len, str);
- r = refs_resolve_ref_unsafe(get_main_ref_store(repo),
- fullref.buf, RESOLVE_REF_READING,
- this_result, &flag);
+ r = refs_resolve_ref_unsafe(refs, fullref.buf,
+ RESOLVE_REF_READING,
+ this_result, &flag,
+ &ignore_errno);
if (r) {
if (!refs_found++)
*ref = xstrdup(r);
for (p = ref_rev_parse_rules; *p; p++) {
struct object_id hash;
const char *ref, *it;
+ int ignore_errno;
strbuf_reset(&path);
strbuf_addf(&path, *p, len, str);
ref = refs_resolve_ref_unsafe(refs, path.buf,
RESOLVE_REF_READING,
- &hash, NULL);
+ oid ? &hash : NULL, NULL,
+ &ignore_errno);
if (!ref)
continue;
if (refs_reflog_exists(refs, path.buf))
continue;
if (!logs_found++) {
*log = xstrdup(it);
- oidcpy(oid, &hash);
+ if (oid)
+ oidcpy(oid, &hash);
}
if (!warn_ambiguous_refs)
break;
{
assert(err);
- if ((new_oid && !is_null_oid(new_oid)) ?
- check_refname_format(refname, REFNAME_ALLOW_ONELEVEL) :
- !refname_is_safe(refname)) {
+ if (!(flags & REF_SKIP_REFNAME_VERIFICATION) &&
+ ((new_oid && !is_null_oid(new_oid)) ?
+ check_refname_format(refname, REFNAME_ALLOW_ONELEVEL) :
+ !refname_is_safe(refname))) {
strbuf_addf(err, _("refusing to update ref with bad name '%s'"),
refname);
return -1;
if (flags & ~REF_TRANSACTION_UPDATE_ALLOWED_FLAGS)
BUG("illegal flags 0x%x passed to ref_transaction_update()", flags);
+ /*
+ * Clear flags outside the allowed set; this should be a noop because
+ * of the BUG() check above, but it works around a -Wnonnull warning
+ * with some versions of "gcc -O3".
+ */
+ flags &= REF_TRANSACTION_UPDATE_ALLOWED_FLAGS;
+
flags |= (new_oid ? REF_HAVE_NEW : 0) | (old_oid ? REF_HAVE_OLD : 0);
ref_transaction_add_update(transaction, refname, flags,
return NULL;
}
-int refs_rename_ref_available(struct ref_store *refs,
- const char *old_refname,
- const char *new_refname)
-{
- struct string_list skip = STRING_LIST_INIT_NODUP;
- struct strbuf err = STRBUF_INIT;
- int ok;
-
- string_list_insert(&skip, old_refname);
- ok = !refs_verify_refname_available(refs, new_refname,
- NULL, &skip, &err);
- if (!ok)
- error("%s", err.buf);
-
- string_list_clear(&skip, 0);
- strbuf_release(&err);
- return ok;
-}
-
int refs_head_ref(struct ref_store *refs, each_ref_fn fn, void *cb_data)
{
struct object_id oid;
int flag;
+ int ignore_errno;
- if (!refs_read_ref_full(refs, "HEAD", RESOLVE_REF_READING,
- &oid, &flag))
+ if (refs_resolve_ref_unsafe(refs, "HEAD", RESOLVE_REF_READING,
+ &oid, &flag, &ignore_errno))
return fn("HEAD", &oid, flag, cb_data);
return 0;
struct ref_iterator *refs_ref_iterator_begin(
struct ref_store *refs,
- const char *prefix, int trim, int flags)
+ const char *prefix, int trim,
+ enum do_for_each_ref_flags flags)
{
struct ref_iterator *iter;
- if (ref_paranoia < 0)
- ref_paranoia = git_env_bool("GIT_REF_PARANOIA", 0);
- if (ref_paranoia)
- flags |= DO_FOR_EACH_INCLUDE_BROKEN;
+ if (!(flags & DO_FOR_EACH_INCLUDE_BROKEN)) {
+ static int ref_paranoia = -1;
+
+ if (ref_paranoia < 0)
+ ref_paranoia = git_env_bool("GIT_REF_PARANOIA", 1);
+ if (ref_paranoia) {
+ flags |= DO_FOR_EACH_INCLUDE_BROKEN;
+ flags |= DO_FOR_EACH_OMIT_DANGLING_SYMREFS;
+ }
+ }
iter = refs->be->iterator_begin(refs, prefix, flags);
}
static int do_for_each_ref(struct ref_store *refs, const char *prefix,
- each_ref_fn fn, int trim, int flags, void *cb_data)
+ each_ref_fn fn, int trim,
+ enum do_for_each_ref_flags flags, void *cb_data)
{
struct ref_iterator *iter;
struct do_for_each_ref_help hp = { fn, cb_data };
return refs_for_each_ref_in(get_main_ref_store(the_repository), prefix, fn, cb_data);
}
-int for_each_fullref_in(const char *prefix, each_ref_fn fn, void *cb_data, unsigned int broken)
+int for_each_fullref_in(const char *prefix, each_ref_fn fn, void *cb_data)
{
- unsigned int flag = 0;
-
- if (broken)
- flag = DO_FOR_EACH_INCLUDE_BROKEN;
return do_for_each_ref(get_main_ref_store(the_repository),
- prefix, fn, 0, flag, cb_data);
+ prefix, fn, 0, 0, cb_data);
}
int refs_for_each_fullref_in(struct ref_store *refs, const char *prefix,
- each_ref_fn fn, void *cb_data,
- unsigned int broken)
+ each_ref_fn fn, void *cb_data)
{
- unsigned int flag = 0;
-
- if (broken)
- flag = DO_FOR_EACH_INCLUDE_BROKEN;
- return do_for_each_ref(refs, prefix, fn, 0, flag, cb_data);
+ return do_for_each_ref(refs, prefix, fn, 0, 0, cb_data);
}
int for_each_replace_ref(struct repository *r, each_repo_ref_fn fn, void *cb_data)
int for_each_fullref_in_prefixes(const char *namespace,
const char **patterns,
- each_ref_fn fn, void *cb_data,
- unsigned int broken)
+ each_ref_fn fn, void *cb_data)
{
struct string_list prefixes = STRING_LIST_INIT_DUP;
struct string_list_item *prefix;
for_each_string_list_item(prefix, &prefixes) {
strbuf_addstr(&buf, prefix->string);
- ret = for_each_fullref_in(buf.buf, fn, cb_data, broken);
+ ret = for_each_fullref_in(buf.buf, fn, cb_data);
if (ret)
break;
strbuf_setlen(&buf, namespace_len);
static int refs_read_special_head(struct ref_store *ref_store,
const char *refname, struct object_id *oid,
- struct strbuf *referent, unsigned int *type)
+ struct strbuf *referent, unsigned int *type,
+ int *failure_errno)
{
struct strbuf full_path = STRBUF_INIT;
struct strbuf content = STRBUF_INIT;
if (strbuf_read_file(&content, full_path.buf, 0) < 0)
goto done;
- result = parse_loose_ref_contents(content.buf, oid, referent, type);
+ result = parse_loose_ref_contents(content.buf, oid, referent, type,
+ failure_errno);
done:
strbuf_release(&full_path);
return result;
}
-int refs_read_raw_ref(struct ref_store *ref_store,
- const char *refname, struct object_id *oid,
- struct strbuf *referent, unsigned int *type)
+int refs_read_raw_ref(struct ref_store *ref_store, const char *refname,
+ struct object_id *oid, struct strbuf *referent,
+ unsigned int *type, int *failure_errno)
{
+ assert(failure_errno);
if (!strcmp(refname, "FETCH_HEAD") || !strcmp(refname, "MERGE_HEAD")) {
return refs_read_special_head(ref_store, refname, oid, referent,
- type);
+ type, failure_errno);
}
return ref_store->be->read_raw_ref(ref_store, refname, oid, referent,
- type);
+ type, failure_errno);
}
-/* This function needs to return a meaningful errno on failure */
const char *refs_resolve_ref_unsafe(struct ref_store *refs,
const char *refname,
int resolve_flags,
- struct object_id *oid, int *flags)
+ struct object_id *oid,
+ int *flags, int *failure_errno)
{
static struct strbuf sb_refname = STRBUF_INIT;
struct object_id unused_oid;
int unused_flags;
int symref_count;
+ assert(failure_errno);
+
if (!oid)
oid = &unused_oid;
if (!flags)
if (check_refname_format(refname, REFNAME_ALLOW_ONELEVEL)) {
if (!(resolve_flags & RESOLVE_REF_ALLOW_BAD_NAME) ||
!refname_is_safe(refname)) {
- errno = EINVAL;
+ *failure_errno = EINVAL;
return NULL;
}
for (symref_count = 0; symref_count < SYMREF_MAXDEPTH; symref_count++) {
unsigned int read_flags = 0;
- if (refs_read_raw_ref(refs, refname,
- oid, &sb_refname, &read_flags)) {
+ if (refs_read_raw_ref(refs, refname, oid, &sb_refname,
+ &read_flags, failure_errno)) {
*flags |= read_flags;
+ if (errno)
+ *failure_errno = errno;
/* In reading mode, refs must eventually resolve */
if (resolve_flags & RESOLVE_REF_READING)
* may show errors besides ENOENT if there are
* similarly-named refs.
*/
- if (errno != ENOENT &&
- errno != EISDIR &&
- errno != ENOTDIR)
+ if (*failure_errno != ENOENT &&
+ *failure_errno != EISDIR &&
+ *failure_errno != ENOTDIR)
return NULL;
oidclr(oid);
if (check_refname_format(refname, REFNAME_ALLOW_ONELEVEL)) {
if (!(resolve_flags & RESOLVE_REF_ALLOW_BAD_NAME) ||
!refname_is_safe(refname)) {
- errno = EINVAL;
+ *failure_errno = EINVAL;
return NULL;
}
}
}
- errno = ELOOP;
+ *failure_errno = ELOOP;
return NULL;
}
const char *resolve_ref_unsafe(const char *refname, int resolve_flags,
struct object_id *oid, int *flags)
{
+ int ignore_errno;
+
return refs_resolve_ref_unsafe(get_main_ref_store(the_repository), refname,
- resolve_flags, oid, flags);
+ resolve_flags, oid, flags, &ignore_errno);
}
int resolve_gitlink_ref(const char *submodule, const char *refname,
{
struct ref_store *refs;
int flags;
+ int ignore_errno;
refs = get_submodule_ref_store(submodule);
if (!refs)
return -1;
- if (!refs_resolve_ref_unsafe(refs, refname, 0, oid, &flags) ||
- is_null_oid(oid))
+ if (!refs_resolve_ref_unsafe(refs, refname, 0, oid, &flags,
+ &ignore_errno) || is_null_oid(oid))
return -1;
return 0;
}
* Create, record, and return a ref_store instance for the specified
* gitdir.
*/
-static struct ref_store *ref_store_init(const char *gitdir,
+static struct ref_store *ref_store_init(struct repository *repo,
+ const char *gitdir,
unsigned int flags)
{
const char *be_name = "files";
if (!be)
BUG("reference backend %s is unknown", be_name);
- refs = be->init(gitdir, flags);
+ refs = be->init(repo, gitdir, flags);
return refs;
}
if (!r->gitdir)
BUG("attempting to get main_ref_store outside of repository");
- r->refs_private = ref_store_init(r->gitdir, REF_STORE_ALL_CAPS);
+ r->refs_private = ref_store_init(r, r->gitdir, REF_STORE_ALL_CAPS);
r->refs_private = maybe_debug_wrap_ref_store(r->gitdir, r->refs_private);
return r->refs_private;
}
struct ref_store *refs;
char *to_free = NULL;
size_t len;
+ struct repository *subrepo;
if (!submodule)
return NULL;
if (submodule_to_gitdir(&submodule_sb, submodule))
goto done;
- /* assume that add_submodule_odb() has been called */
- refs = ref_store_init(submodule_sb.buf,
+ subrepo = xmalloc(sizeof(*subrepo));
+ /*
+ * NEEDSWORK: Make get_submodule_ref_store() work with arbitrary
+ * superprojects other than the_repository. This probably should be
+ * done by making it take a struct repository * parameter instead of a
+ * submodule path.
+ */
+ if (repo_submodule_init(subrepo, the_repository, submodule,
+ null_oid())) {
+ free(subrepo);
+ goto done;
+ }
+ refs = ref_store_init(subrepo, submodule_sb.buf,
REF_STORE_READ | REF_STORE_ODB);
register_ref_store_map(&submodule_ref_stores, "submodule",
refs, submodule);
return refs;
if (wt->id)
- refs = ref_store_init(git_common_path("worktrees/%s", wt->id),
+ refs = ref_store_init(the_repository,
+ git_common_path("worktrees/%s", wt->id),
REF_STORE_ALL_CAPS);
else
- refs = ref_store_init(get_git_common_dir(),
+ refs = ref_store_init(the_repository,
+ get_git_common_dir(),
REF_STORE_ALL_CAPS);
if (refs)
update->refname);
if (write_in_full(proc.in, buf.buf, buf.len) < 0) {
- if (errno != EPIPE)
+ if (errno != EPIPE) {
+ /* Don't leak errno outside this API */
+ errno = 0;
ret = -1;
+ }
break;
}
}
strbuf_grow(&dirname, strlen(refname) + 1);
for (slash = strchr(refname, '/'); slash; slash = strchr(slash + 1, '/')) {
+ /*
+ * Just saying "Is a directory" when we e.g. can't
+ * lock some multi-level ref isn't very informative,
+ * the user won't be told *what* is a directory, so
+ * let's not use strerror() below.
+ */
+ int ignore_errno;
/* Expand dirname to the new prefix, not including the trailing slash: */
strbuf_add(&dirname, refname + dirname.len, slash - refname - dirname.len);
if (skip && string_list_has_string(skip, dirname.buf))
continue;
- if (!refs_read_raw_ref(refs, dirname.buf, &oid, &referent, &type)) {
+ if (!refs_read_raw_ref(refs, dirname.buf, &oid, &referent,
+ &type, &ignore_errno)) {
strbuf_addf(err, _("'%s' exists; cannot create '%s'"),
dirname.buf, refname);
goto cleanup;
}
int refs_create_reflog(struct ref_store *refs, const char *refname,
- int force_create, struct strbuf *err)
+ struct strbuf *err)
{
- return refs->be->create_reflog(refs, refname, force_create, err);
+ return refs->be->create_reflog(refs, refname, err);
}
-int safe_create_reflog(const char *refname, int force_create,
- struct strbuf *err)
+int safe_create_reflog(const char *refname, struct strbuf *err)
{
return refs_create_reflog(get_main_ref_store(the_repository), refname,
- force_create, err);
+ err);
}
int refs_delete_reflog(struct ref_store *refs, const char *refname)
}
int refs_reflog_expire(struct ref_store *refs,
- const char *refname, const struct object_id *oid,
+ const char *refname,
unsigned int flags,
reflog_expiry_prepare_fn prepare_fn,
reflog_expiry_should_prune_fn should_prune_fn,
reflog_expiry_cleanup_fn cleanup_fn,
void *policy_cb_data)
{
- return refs->be->reflog_expire(refs, refname, oid, flags,
+ return refs->be->reflog_expire(refs, refname, flags,
prepare_fn, should_prune_fn,
cleanup_fn, policy_cb_data);
}
-int reflog_expire(const char *refname, const struct object_id *oid,
+int reflog_expire(const char *refname,
unsigned int flags,
reflog_expiry_prepare_fn prepare_fn,
reflog_expiry_should_prune_fn should_prune_fn,
void *policy_cb_data)
{
return refs_reflog_expire(get_main_ref_store(the_repository),
- refname, oid, flags,
+ refname, flags,
prepare_fn, should_prune_fn,
cleanup_fn, policy_cb_data);
}
projects / thirdparty / git.git / blobdiff