#include "cache.h"
#include "hashmap.h"
#include "lockfile.h"
+#include "iterator.h"
#include "refs.h"
#include "refs/refs-internal.h"
#include "object.h"
const char *prettify_refname(const char *name)
{
- return name + (
- starts_with(name, "refs/heads/") ? 11 :
- starts_with(name, "refs/tags/") ? 10 :
- starts_with(name, "refs/remotes/") ? 13 :
- 0);
+ if (skip_prefix(name, "refs/heads/", &name) ||
+ skip_prefix(name, "refs/tags/", &name) ||
+ skip_prefix(name, "refs/remotes/", &name))
+ ; /* nothing */
+ return name;
}
static const char *ref_rev_parse_rules[] = {
{
const char **p, *r;
int refs_found = 0;
+ struct strbuf fullref = STRBUF_INIT;
*ref = NULL;
for (p = ref_rev_parse_rules; *p; p++) {
- char fullref[PATH_MAX];
unsigned char sha1_from_ref[20];
unsigned char *this_result;
int flag;
this_result = refs_found ? sha1_from_ref : sha1;
- mksnpath(fullref, sizeof(fullref), *p, len, str);
- r = resolve_ref_unsafe(fullref, RESOLVE_REF_READING,
+ strbuf_reset(&fullref);
+ strbuf_addf(&fullref, *p, len, str);
+ r = resolve_ref_unsafe(fullref.buf, RESOLVE_REF_READING,
this_result, &flag);
if (r) {
if (!refs_found++)
*ref = xstrdup(r);
if (!warn_ambiguous_refs)
break;
- } else if ((flag & REF_ISSYMREF) && strcmp(fullref, "HEAD")) {
- warning("ignoring dangling symref %s.", fullref);
- } else if ((flag & REF_ISBROKEN) && strchr(fullref, '/')) {
- warning("ignoring broken ref %s.", fullref);
+ } else if ((flag & REF_ISSYMREF) && strcmp(fullref.buf, "HEAD")) {
+ warning("ignoring dangling symref %s.", fullref.buf);
+ } else if ((flag & REF_ISBROKEN) && strchr(fullref.buf, '/')) {
+ warning("ignoring broken ref %s.", fullref.buf);
}
}
+ strbuf_release(&fullref);
return refs_found;
}
char *last_branch = substitute_branch_name(&str, &len);
const char **p;
int logs_found = 0;
+ struct strbuf path = STRBUF_INIT;
*log = NULL;
for (p = ref_rev_parse_rules; *p; p++) {
unsigned char hash[20];
- char path[PATH_MAX];
const char *ref, *it;
- mksnpath(path, sizeof(path), *p, len, str);
- ref = resolve_ref_unsafe(path, RESOLVE_REF_READING,
+ strbuf_reset(&path);
+ strbuf_addf(&path, *p, len, str);
+ ref = resolve_ref_unsafe(path.buf, RESOLVE_REF_READING,
hash, NULL);
if (!ref)
continue;
- if (reflog_exists(path))
- it = path;
- else if (strcmp(ref, path) && reflog_exists(ref))
+ if (reflog_exists(path.buf))
+ it = path.buf;
+ else if (strcmp(ref, path.buf) && reflog_exists(ref))
it = ref;
else
continue;
if (!warn_ambiguous_refs)
break;
}
+ strbuf_release(&path);
free(last_branch);
return logs_found;
}
return 0;
}
-int delete_ref(const char *msg, const char *refname,
- const unsigned char *old_sha1, unsigned int flags)
+int refs_delete_ref(struct ref_store *refs, const char *msg,
+ const char *refname,
+ const unsigned char *old_sha1,
+ unsigned int flags)
{
struct ref_transaction *transaction;
struct strbuf err = STRBUF_INIT;
- if (ref_type(refname) == REF_TYPE_PSEUDOREF)
+ if (ref_type(refname) == REF_TYPE_PSEUDOREF) {
+ assert(refs == get_main_ref_store());
return delete_pseudoref(refname, old_sha1);
+ }
- transaction = ref_transaction_begin(&err);
+ transaction = ref_store_transaction_begin(refs, &err);
if (!transaction ||
ref_transaction_delete(transaction, refname, old_sha1,
flags, msg, &err) ||
return 0;
}
+int delete_ref(const char *msg, const char *refname,
+ const unsigned char *old_sha1, unsigned int flags)
+{
+ return refs_delete_ref(get_main_ref_store(), msg, refname,
+ old_sha1, flags);
+}
+
int copy_reflog_msg(char *buf, const char *msg)
{
char *cp = buf;
return 1;
}
-struct ref_transaction *ref_transaction_begin(struct strbuf *err)
+struct ref_transaction *ref_store_transaction_begin(struct ref_store *refs,
+ struct strbuf *err)
{
+ struct ref_transaction *tr;
assert(err);
- return xcalloc(1, sizeof(struct ref_transaction));
+ tr = xcalloc(1, sizeof(struct ref_transaction));
+ tr->ref_store = refs;
+ return tr;
+}
+
+struct ref_transaction *ref_transaction_begin(struct strbuf *err)
+{
+ return ref_store_transaction_begin(get_main_ref_store(), err);
}
void ref_transaction_free(struct ref_transaction *transaction)
old_oid ? old_oid->hash : NULL, flags, onerr);
}
-int update_ref(const char *msg, const char *refname,
- const unsigned char *new_sha1, const unsigned char *old_sha1,
- unsigned int flags, enum action_on_err onerr)
+int refs_update_ref(struct ref_store *refs, const char *msg,
+ const char *refname, const unsigned char *new_sha1,
+ const unsigned char *old_sha1, unsigned int flags,
+ enum action_on_err onerr)
{
struct ref_transaction *t = NULL;
struct strbuf err = STRBUF_INIT;
int ret = 0;
if (ref_type(refname) == REF_TYPE_PSEUDOREF) {
+ assert(refs == get_main_ref_store());
ret = write_pseudoref(refname, new_sha1, old_sha1, &err);
} else {
- t = ref_transaction_begin(&err);
+ t = ref_store_transaction_begin(refs, &err);
if (!t ||
ref_transaction_update(t, refname, new_sha1, old_sha1,
flags, msg, &err) ||
return 0;
}
+int update_ref(const char *msg, const char *refname,
+ const unsigned char *new_sha1,
+ const unsigned char *old_sha1,
+ unsigned int flags, enum action_on_err onerr)
+{
+ return refs_update_ref(get_main_ref_store(), msg, refname, new_sha1,
+ old_sha1, flags, onerr);
+}
+
char *shorten_unambiguous_ref(const char *refname, int strict)
{
int i;
static char **scanf_fmts;
static int nr_rules;
char *short_name;
+ struct strbuf resolved_buf = STRBUF_INIT;
if (!nr_rules) {
/*
*/
for (j = 0; j < rules_to_fail; j++) {
const char *rule = ref_rev_parse_rules[j];
- char refname[PATH_MAX];
/* skip matched rule */
if (i == j)
* (with this previous rule) to a valid ref
* read_ref() returns 0 on success
*/
- mksnpath(refname, sizeof(refname),
- rule, short_name_len, short_name);
- if (ref_exists(refname))
+ strbuf_reset(&resolved_buf);
+ strbuf_addf(&resolved_buf, rule,
+ short_name_len, short_name);
+ if (ref_exists(resolved_buf.buf))
break;
}
* short name is non-ambiguous if all previous rules
* haven't resolved to a valid ref
*/
- if (j == rules_to_fail)
+ if (j == rules_to_fail) {
+ strbuf_release(&resolved_buf);
return short_name;
+ }
}
+ strbuf_release(&resolved_buf);
free(short_name);
return xstrdup(refname);
}
return head_ref_submodule(NULL, fn, cb_data);
}
+struct ref_iterator *refs_ref_iterator_begin(
+ struct ref_store *refs,
+ const char *prefix, int trim, int flags)
+{
+ struct ref_iterator *iter;
+
+ iter = refs->be->iterator_begin(refs, prefix, flags);
+ iter = prefix_ref_iterator_begin(iter, prefix, trim);
+
+ return iter;
+}
+
/*
* Call fn for each reference in the specified submodule for which the
* refname begins with prefix. If trim is non-zero, then trim that
if (!refs)
return 0;
- iter = refs->be->iterator_begin(refs, prefix, flags);
- iter = prefix_ref_iterator_begin(iter, prefix, trim);
+ iter = refs_ref_iterator_begin(refs, prefix, trim, flags);
return do_for_each_ref_iterator(iter, fn, cb_data);
}
return refs_for_each_rawref(get_main_ref_store(), fn, cb_data);
}
+int refs_read_raw_ref(struct ref_store *ref_store,
+ const char *refname, unsigned char *sha1,
+ struct strbuf *referent, unsigned int *type)
+{
+ return ref_store->be->read_raw_ref(ref_store, refname, sha1, referent, type);
+}
+
/* This function needs to return a meaningful errno on failure */
const char *refs_resolve_ref_unsafe(struct ref_store *refs,
const char *refname,
for (symref_count = 0; symref_count < SYMREF_MAXDEPTH; symref_count++) {
unsigned int read_flags = 0;
- if (refs->be->read_raw_ref(refs, refname,
- sha1, &sb_refname, &read_flags)) {
+ if (refs_read_raw_ref(refs, refname,
+ sha1, &sb_refname, &read_flags)) {
*flags |= read_flags;
if (errno != ENOENT || (resolve_flags & RESOLVE_REF_READING))
return NULL;
return refs->be->pack_refs(refs, flags);
}
-int pack_refs(unsigned int flags)
-{
- return refs_pack_refs(get_main_ref_store(), flags);
-}
-
int refs_peel_ref(struct ref_store *refs, const char *refname,
unsigned char *sha1)
{
int ref_transaction_commit(struct ref_transaction *transaction,
struct strbuf *err)
{
- struct ref_store *refs = get_main_ref_store();
+ struct ref_store *refs = transaction->ref_store;
+
+ if (getenv(GIT_QUARANTINE_ENVIRONMENT)) {
+ strbuf_addstr(err,
+ _("ref updates forbidden inside quarantine environment"));
+ return -1;
+ }
return refs->be->transaction_commit(refs, transaction, err);
}
int refs_verify_refname_available(struct ref_store *refs,
const char *refname,
- const struct string_list *extra,
+ const struct string_list *extras,
const struct string_list *skip,
struct strbuf *err)
{
- return refs->be->verify_refname_available(refs, refname, extra, skip, err);
+ const char *slash;
+ const char *extra_refname;
+ struct strbuf dirname = STRBUF_INIT;
+ struct strbuf referent = STRBUF_INIT;
+ struct object_id oid;
+ unsigned int type;
+ struct ref_iterator *iter;
+ int ok;
+ int ret = -1;
+
+ /*
+ * For the sake of comments in this function, suppose that
+ * refname is "refs/foo/bar".
+ */
+
+ assert(err);
+
+ strbuf_grow(&dirname, strlen(refname) + 1);
+ for (slash = strchr(refname, '/'); slash; slash = strchr(slash + 1, '/')) {
+ /* Expand dirname to the new prefix, not including the trailing slash: */
+ strbuf_add(&dirname, refname + dirname.len, slash - refname - dirname.len);
+
+ /*
+ * We are still at a leading dir of the refname (e.g.,
+ * "refs/foo"; if there is a reference with that name,
+ * it is a conflict, *unless* it is in skip.
+ */
+ if (skip && string_list_has_string(skip, dirname.buf))
+ continue;
+
+ if (!refs_read_raw_ref(refs, dirname.buf, oid.hash, &referent, &type)) {
+ strbuf_addf(err, "'%s' exists; cannot create '%s'",
+ dirname.buf, refname);
+ goto cleanup;
+ }
+
+ if (extras && string_list_has_string(extras, dirname.buf)) {
+ strbuf_addf(err, "cannot process '%s' and '%s' at the same time",
+ refname, dirname.buf);
+ goto cleanup;
+ }
+ }
+
+ /*
+ * We are at the leaf of our refname (e.g., "refs/foo/bar").
+ * There is no point in searching for a reference with that
+ * name, because a refname isn't considered to conflict with
+ * itself. But we still need to check for references whose
+ * names are in the "refs/foo/bar/" namespace, because they
+ * *do* conflict.
+ */
+ strbuf_addstr(&dirname, refname + dirname.len);
+ strbuf_addch(&dirname, '/');
+
+ iter = refs_ref_iterator_begin(refs, dirname.buf, 0,
+ DO_FOR_EACH_INCLUDE_BROKEN);
+ while ((ok = ref_iterator_advance(iter)) == ITER_OK) {
+ if (skip &&
+ string_list_has_string(skip, iter->refname))
+ continue;
+
+ strbuf_addf(err, "'%s' exists; cannot create '%s'",
+ iter->refname, refname);
+ ref_iterator_abort(iter);
+ goto cleanup;
+ }
+
+ if (ok != ITER_DONE)
+ die("BUG: error while iterating over references");
+
+ extra_refname = find_descendant_ref(dirname.buf, extras, skip);
+ if (extra_refname)
+ strbuf_addf(err, "cannot process '%s' and '%s' at the same time",
+ refname, extra_refname);
+ else
+ ret = 0;
+
+cleanup:
+ strbuf_release(&referent);
+ strbuf_release(&dirname);
+ return ret;
}
int refs_for_each_reflog(struct ref_store *refs, each_ref_fn fn, void *cb_data)
int initial_ref_transaction_commit(struct ref_transaction *transaction,
struct strbuf *err)
{
- struct ref_store *refs = get_main_ref_store();
+ struct ref_store *refs = transaction->ref_store;
return refs->be->initial_transaction_commit(refs, transaction, err);
}