*/
#include "cache.h"
+ #include "hashmap.h"
#include "lockfile.h"
#include "refs.h"
#include "refs/refs-internal.h"
int should_autocreate_reflog(const char *refname)
{
- if (!log_all_ref_updates)
+ switch (log_all_ref_updates) {
+ case LOG_REFS_ALWAYS:
+ return 1;
+ case LOG_REFS_NORMAL:
+ return starts_with(refname, "refs/heads/") ||
+ starts_with(refname, "refs/remotes/") ||
+ starts_with(refname, "refs/notes/") ||
+ !strcmp(refname, "HEAD");
+ default:
return 0;
- return starts_with(refname, "refs/heads/") ||
- starts_with(refname, "refs/remotes/") ||
- starts_with(refname, "refs/notes/") ||
- !strcmp(refname, "HEAD");
+ }
}
int is_branch(const char *refname)
}
/* This function needs to return a meaningful errno on failure */
- static const char *resolve_ref_recursively(struct ref_store *refs,
- const char *refname,
- int resolve_flags,
- unsigned char *sha1, int *flags)
+ const char *resolve_ref_recursively(struct ref_store *refs,
+ const char *refname,
+ int resolve_flags,
+ unsigned char *sha1, int *flags)
{
static struct strbuf sb_refname = STRBUF_INIT;
int unused_flags;
return 0;
}
+ struct submodule_hash_entry
+ {
+ struct hashmap_entry ent; /* must be the first member! */
+
+ struct ref_store *refs;
+
+ /* NUL-terminated name of submodule: */
+ char submodule[FLEX_ARRAY];
+ };
+
+ static int submodule_hash_cmp(const void *entry, const void *entry_or_key,
+ const void *keydata)
+ {
+ const struct submodule_hash_entry *e1 = entry, *e2 = entry_or_key;
+ const char *submodule = keydata ? keydata : e2->submodule;
+
+ return strcmp(e1->submodule, submodule);
+ }
+
+ static struct submodule_hash_entry *alloc_submodule_hash_entry(
+ const char *submodule, struct ref_store *refs)
+ {
+ struct submodule_hash_entry *entry;
+
+ FLEX_ALLOC_STR(entry, submodule, submodule);
+ hashmap_entry_init(entry, strhash(submodule));
+ entry->refs = refs;
+ return entry;
+ }
+
/* A pointer to the ref_store for the main repository: */
static struct ref_store *main_ref_store;
- /* A linked list of ref_stores for submodules: */
- static struct ref_store *submodule_ref_stores;
+ /* A hashmap of ref_stores, stored by submodule name: */
+ static struct hashmap submodule_ref_stores;
- void base_ref_store_init(struct ref_store *refs,
- const struct ref_storage_be *be,
- const char *submodule)
+ /*
+ * Return the ref_store instance for the specified submodule (or the
+ * main repository if submodule is NULL). If that ref_store hasn't
+ * been initialized yet, return NULL.
+ */
+ static struct ref_store *lookup_ref_store(const char *submodule)
+ {
+ struct submodule_hash_entry *entry;
+
+ if (!submodule)
+ return main_ref_store;
+
+ if (!submodule_ref_stores.tablesize)
+ /* It's initialized on demand in register_ref_store(). */
+ return NULL;
+
+ entry = hashmap_get_from_hash(&submodule_ref_stores,
+ strhash(submodule), submodule);
+ return entry ? entry->refs : NULL;
+ }
+
+ /*
+ * Register the specified ref_store to be the one that should be used
+ * for submodule (or the main repository if submodule is NULL). It is
+ * a fatal error to call this function twice for the same submodule.
+ */
+ static void register_ref_store(struct ref_store *refs, const char *submodule)
{
- refs->be = be;
if (!submodule) {
if (main_ref_store)
die("BUG: main_ref_store initialized twice");
- refs->submodule = "";
- refs->next = NULL;
main_ref_store = refs;
} else {
- if (lookup_ref_store(submodule))
+ if (!submodule_ref_stores.tablesize)
+ hashmap_init(&submodule_ref_stores, submodule_hash_cmp, 0);
+
+ if (hashmap_put(&submodule_ref_stores,
+ alloc_submodule_hash_entry(submodule, refs)))
die("BUG: ref_store for submodule '%s' initialized twice",
submodule);
-
- refs->submodule = xstrdup(submodule);
- refs->next = submodule_ref_stores;
- submodule_ref_stores = refs;
}
}
- struct ref_store *ref_store_init(const char *submodule)
+ /*
+ * Create, record, and return a ref_store instance for the specified
+ * submodule (or the main repository if submodule is NULL).
+ */
+ static struct ref_store *ref_store_init(const char *submodule)
{
const char *be_name = "files";
struct ref_storage_be *be = find_ref_storage_backend(be_name);
+ struct ref_store *refs;
if (!be)
die("BUG: reference backend %s is unknown", be_name);
- if (!submodule || !*submodule)
- return be->init(NULL);
- else
- return be->init(submodule);
- }
-
- struct ref_store *lookup_ref_store(const char *submodule)
- {
- struct ref_store *refs;
-
- if (!submodule || !*submodule)
- return main_ref_store;
-
- for (refs = submodule_ref_stores; refs; refs = refs->next) {
- if (!strcmp(submodule, refs->submodule))
- return refs;
- }
-
- return NULL;
+ refs = be->init(submodule);
+ register_ref_store(refs, submodule);
+ return refs;
}
struct ref_store *get_ref_store(const char *submodule)
return refs;
}
- void assert_main_repository(struct ref_store *refs, const char *caller)
+ void base_ref_store_init(struct ref_store *refs,
+ const struct ref_storage_be *be)
{
- if (*refs->submodule)
- die("BUG: %s called for a submodule", caller);
+ refs->be = be;
}
/* backend functions */
if (peel_entry(entry, 0))
return -1;
- hashcpy(peeled->hash, entry->u.value.peeled.hash);
+ oidcpy(peeled, &entry->u.value.peeled);
return 0;
}
*/
struct files_ref_store {
struct ref_store base;
+
+ /*
+ * The name of the submodule represented by this object, or
+ * NULL if it represents the main repository's reference
+ * store:
+ */
+ const char *submodule;
+
struct ref_entry *loose;
struct packed_ref_cache *packed;
};
struct files_ref_store *refs = xcalloc(1, sizeof(*refs));
struct ref_store *ref_store = (struct ref_store *)refs;
- base_ref_store_init(ref_store, &refs_be_files, submodule);
+ base_ref_store_init(ref_store, &refs_be_files);
+
+ refs->submodule = xstrdup_or_null(submodule);
return ref_store;
}
+ /*
+ * Die if refs is for a submodule (i.e., not for the main repository).
+ * caller is used in any necessary error messages.
+ */
+ static void files_assert_main_repository(struct files_ref_store *refs,
+ const char *caller)
+ {
+ if (refs->submodule)
+ die("BUG: %s called for a submodule", caller);
+ }
+
/*
* Downcast ref_store to files_ref_store. Die if ref_store is not a
* files_ref_store. If submodule_allowed is not true, then also die if
struct ref_store *ref_store, int submodule_allowed,
const char *caller)
{
+ struct files_ref_store *refs;
+
if (ref_store->be != &refs_be_files)
die("BUG: ref_store is type \"%s\" not \"files\" in %s",
ref_store->be->name, caller);
+ refs = (struct files_ref_store *)ref_store;
+
if (!submodule_allowed)
- assert_main_repository(ref_store, caller);
+ files_assert_main_repository(refs, caller);
- return (struct files_ref_store *)ref_store;
+ return refs;
}
/* The length of a peeled reference line in packed-refs, including EOL: */
{
char *packed_refs_file;
- if (*refs->base.submodule)
- packed_refs_file = git_pathdup_submodule(refs->base.submodule,
+ if (refs->submodule)
+ packed_refs_file = git_pathdup_submodule(refs->submodule,
"packed-refs");
else
packed_refs_file = git_pathdup("packed-refs");
size_t path_baselen;
int err = 0;
- if (*refs->base.submodule)
- err = strbuf_git_path_submodule(&path, refs->base.submodule, "%s", dirname);
+ if (refs->submodule)
+ err = strbuf_git_path_submodule(&path, refs->submodule, "%s", dirname);
else
strbuf_git_path(&path, "%s", dirname);
path_baselen = path.len;
create_dir_entry(refs, refname.buf,
refname.len, 1));
} else {
- int read_ok;
-
- if (*refs->base.submodule) {
- hashclr(sha1);
- flag = 0;
- read_ok = !resolve_gitlink_ref(refs->base.submodule,
- refname.buf, sha1);
- } else {
- read_ok = !read_ref_full(refname.buf,
- RESOLVE_REF_READING,
- sha1, &flag);
- }
-
- if (!read_ok) {
+ if (!resolve_ref_recursively(&refs->base,
+ refname.buf,
+ RESOLVE_REF_READING,
+ sha1, &flag)) {
hashclr(sha1);
flag |= REF_ISBROKEN;
} else if (is_null_sha1(sha1)) {
*type = 0;
strbuf_reset(&sb_path);
- if (*refs->base.submodule)
- strbuf_git_path_submodule(&sb_path, refs->base.submodule, "%s", refname);
+ if (refs->submodule)
+ strbuf_git_path_submodule(&sb_path, refs->submodule, "%s", refname);
else
strbuf_git_path(&sb_path, "%s", refname);
int ret = TRANSACTION_GENERIC_ERROR;
assert(err);
- assert_main_repository(&refs->base, "lock_raw_ref");
+ files_assert_main_repository(refs, "lock_raw_ref");
*type = 0;
return remove_dir_recursively(path, REMOVE_DIR_EMPTY_ONLY);
}
+static int create_reflock(const char *path, void *cb)
+{
+ struct lock_file *lk = cb;
+
+ return hold_lock_file_for_update(lk, path, LOCK_NO_DEREF) < 0 ? -1 : 0;
+}
+
/*
* Locks a ref returning the lock on success and NULL on failure.
* On failure errno is set to something meaningful.
struct strbuf ref_file = STRBUF_INIT;
struct ref_lock *lock;
int last_errno = 0;
- int lflags = LOCK_NO_DEREF;
int mustexist = (old_sha1 && !is_null_sha1(old_sha1));
int resolve_flags = RESOLVE_REF_NO_RECURSE;
- int attempts_remaining = 3;
int resolved;
- assert_main_repository(&refs->base, "lock_ref_sha1_basic");
+ files_assert_main_repository(refs, "lock_ref_sha1_basic");
assert(err);
lock = xcalloc(1, sizeof(struct ref_lock));
lock->ref_name = xstrdup(refname);
- retry:
- switch (safe_create_leading_directories_const(ref_file.buf)) {
- case SCLD_OK:
- break; /* success */
- case SCLD_VANISHED:
- if (--attempts_remaining > 0)
- goto retry;
- /* fall through */
- default:
+ if (raceproof_create_file(ref_file.buf, create_reflock, lock->lk)) {
last_errno = errno;
- strbuf_addf(err, "unable to create directory for '%s'",
- ref_file.buf);
+ unable_to_lock_message(ref_file.buf, errno, err);
goto error_return;
}
- if (hold_lock_file_for_update(lock->lk, ref_file.buf, lflags) < 0) {
- last_errno = errno;
- if (errno == ENOENT && --attempts_remaining > 0)
- /*
- * Maybe somebody just deleted one of the
- * directories leading to ref_file. Try
- * again:
- */
- goto retry;
- else {
- unable_to_lock_message(ref_file.buf, errno, err);
- goto error_return;
- }
- }
if (verify_lock(lock, old_sha1, mustexist, err)) {
last_errno = errno;
goto error_return;
static int timeout_value = 1000;
struct packed_ref_cache *packed_ref_cache;
- assert_main_repository(&refs->base, "lock_packed_refs");
+ files_assert_main_repository(refs, "lock_packed_refs");
if (!timeout_configured) {
git_config_get_int("core.packedrefstimeout", &timeout_value);
int save_errno = 0;
FILE *out;
- assert_main_repository(&refs->base, "commit_packed_refs");
+ files_assert_main_repository(refs, "commit_packed_refs");
if (!packed_ref_cache->lock)
die("internal error: packed-refs not locked");
struct packed_ref_cache *packed_ref_cache =
get_packed_ref_cache(refs);
- assert_main_repository(&refs->base, "rollback_packed_refs");
+ files_assert_main_repository(refs, "rollback_packed_refs");
if (!packed_ref_cache->lock)
die("internal error: packed-refs not locked");
return 0;
}
+enum {
+ REMOVE_EMPTY_PARENTS_REF = 0x01,
+ REMOVE_EMPTY_PARENTS_REFLOG = 0x02
+};
+
/*
- * Remove empty parents, but spare refs/ and immediate subdirs.
- * Note: munges *name.
+ * Remove empty parent directories associated with the specified
+ * reference and/or its reflog, but spare [logs/]refs/ and immediate
+ * subdirs. flags is a combination of REMOVE_EMPTY_PARENTS_REF and/or
+ * REMOVE_EMPTY_PARENTS_REFLOG.
*/
-static void try_remove_empty_parents(char *name)
+static void try_remove_empty_parents(const char *refname, unsigned int flags)
{
+ struct strbuf buf = STRBUF_INIT;
char *p, *q;
int i;
- p = name;
+
+ strbuf_addstr(&buf, refname);
+ p = buf.buf;
for (i = 0; i < 2; i++) { /* refs/{heads,tags,...}/ */
while (*p && *p != '/')
p++;
while (*p == '/')
p++;
}
- for (q = p; *q; q++)
- ;
- while (1) {
+ q = buf.buf + buf.len;
+ while (flags & (REMOVE_EMPTY_PARENTS_REF | REMOVE_EMPTY_PARENTS_REFLOG)) {
while (q > p && *q != '/')
q--;
while (q > p && *(q-1) == '/')
q--;
if (q == p)
break;
- *q = '\0';
- if (rmdir(git_path("%s", name)))
- break;
+ strbuf_setlen(&buf, q - buf.buf);
+ if ((flags & REMOVE_EMPTY_PARENTS_REF) &&
+ rmdir(git_path("%s", buf.buf)))
+ flags &= ~REMOVE_EMPTY_PARENTS_REF;
+ if ((flags & REMOVE_EMPTY_PARENTS_REFLOG) &&
+ rmdir(git_path("logs/%s", buf.buf)))
+ flags &= ~REMOVE_EMPTY_PARENTS_REFLOG;
}
+ strbuf_release(&buf);
}
/* make sure nobody touched the ref, and unlink */
}
ref_transaction_free(transaction);
strbuf_release(&err);
- try_remove_empty_parents(r->name);
}
static void prune_refs(struct ref_to_prune *r)
struct string_list_item *refname;
int ret, needs_repacking = 0, removed = 0;
- assert_main_repository(&refs->base, "repack_without_refs");
+ files_assert_main_repository(refs, "repack_without_refs");
assert(err);
/* Look for a packed ref */
return ret;
}
-static int delete_ref_loose(struct ref_lock *lock, int flag, struct strbuf *err)
-{
- assert(err);
-
- if (!(flag & REF_ISPACKED) || flag & REF_ISSYMREF) {
- /*
- * loose. The loose file name is the same as the
- * lockfile name, minus ".lock":
- */
- char *loose_filename = get_locked_file_path(lock->lk);
- int res = unlink_or_msg(loose_filename, err);
- free(loose_filename);
- if (res)
- return 1;
- }
- return 0;
-}
-
static int files_delete_refs(struct ref_store *ref_store,
struct string_list *refnames, unsigned int flags)
{
*/
#define TMP_RENAMED_LOG "logs/refs/.tmp-renamed-log"
-static int rename_tmp_log(const char *newrefname)
+static int rename_tmp_log_callback(const char *path, void *cb)
{
- int attempts_remaining = 4;
- struct strbuf path = STRBUF_INIT;
- int ret = -1;
+ int *true_errno = cb;
- retry:
- strbuf_reset(&path);
- strbuf_git_path(&path, "logs/%s", newrefname);
- switch (safe_create_leading_directories_const(path.buf)) {
- case SCLD_OK:
- break; /* success */
- case SCLD_VANISHED:
- if (--attempts_remaining > 0)
- goto retry;
- /* fall through */
- default:
- error("unable to create directory for %s", newrefname);
- goto out;
+ if (rename(git_path(TMP_RENAMED_LOG), path)) {
+ /*
+ * rename(a, b) when b is an existing directory ought
+ * to result in ISDIR, but Solaris 5.8 gives ENOTDIR.
+ * Sheesh. Record the true errno for error reporting,
+ * but report EISDIR to raceproof_create_file() so
+ * that it knows to retry.
+ */
+ *true_errno = errno;
+ if (errno == ENOTDIR)
+ errno = EISDIR;
+ return -1;
+ } else {
+ return 0;
}
+}
- if (rename(git_path(TMP_RENAMED_LOG), path.buf)) {
- if ((errno==EISDIR || errno==ENOTDIR) && --attempts_remaining > 0) {
- /*
- * rename(a, b) when b is an existing
- * directory ought to result in ISDIR, but
- * Solaris 5.8 gives ENOTDIR. Sheesh.
- */
- if (remove_empty_directories(&path)) {
- error("Directory not empty: logs/%s", newrefname);
- goto out;
- }
- goto retry;
- } else if (errno == ENOENT && --attempts_remaining > 0) {
- /*
- * Maybe another process just deleted one of
- * the directories in the path to newrefname.
- * Try again from the beginning.
- */
- goto retry;
- } else {
- error("unable to move logfile "TMP_RENAMED_LOG" to logs/%s: %s",
- newrefname, strerror(errno));
- goto out;
- }
+static int rename_tmp_log(const char *newrefname)
+{
+ char *path = git_pathdup("logs/%s", newrefname);
+ int ret, true_errno;
+
+ ret = raceproof_create_file(path, rename_tmp_log_callback, &true_errno);
+ if (ret) {
+ if (errno == EISDIR)
+ error("directory not empty: %s", path);
+ else
+ error("unable to move logfile %s to %s: %s",
+ git_path(TMP_RENAMED_LOG), path,
+ strerror(true_errno));
}
- ret = 0;
-out:
- strbuf_release(&path);
+
+ free(path);
return ret;
}
if (!read_ref_full(newrefname, RESOLVE_REF_READING | RESOLVE_REF_NO_RECURSE,
sha1, NULL) &&
delete_ref(newrefname, NULL, REF_NODEREF)) {
- if (errno==EISDIR) {
+ if (errno == EISDIR) {
struct strbuf path = STRBUF_INIT;
int result;
}
flag = log_all_ref_updates;
- log_all_ref_updates = 0;
+ log_all_ref_updates = LOG_REFS_NONE;
if (write_ref_to_lockfile(lock, orig_sha1, &err) ||
commit_ref_update(refs, lock, orig_sha1, NULL, &err)) {
error("unable to write current sha1 into %s: %s", oldrefname, err.buf);
return 0;
}
+static int open_or_create_logfile(const char *path, void *cb)
+{
+ int *fd = cb;
+
+ *fd = open(path, O_APPEND | O_WRONLY | O_CREAT, 0666);
+ return (*fd < 0) ? -1 : 0;
+}
+
/*
- * Create a reflog for a ref. If force_create = 0, the reflog will
- * only be created for certain refs (those for which
- * should_autocreate_reflog returns non-zero. Otherwise, create it
- * regardless of the ref name. Fill in *err and return -1 on failure.
+ * Create a reflog for a ref. If force_create = 0, only create the
+ * reflog for certain refs (those for which should_autocreate_reflog
+ * returns non-zero). Otherwise, create it regardless of the reference
+ * name. If the logfile already existed or was created, return 0 and
+ * set *logfd to the file descriptor opened for appending to the file.
+ * If no logfile exists and we decided not to create one, return 0 and
+ * set *logfd to -1. On failure, fill in *err, set *logfd to -1, and
+ * return -1.
*/
-static int log_ref_setup(const char *refname, struct strbuf *logfile, struct strbuf *err, int force_create)
+static int log_ref_setup(const char *refname, int force_create,
+ int *logfd, struct strbuf *err)
{
- int logfd, oflags = O_APPEND | O_WRONLY;
+ char *logfile = git_pathdup("logs/%s", refname);
- strbuf_git_path(logfile, "logs/%s", refname);
if (force_create || should_autocreate_reflog(refname)) {
- if (safe_create_leading_directories(logfile->buf) < 0) {
- strbuf_addf(err, "unable to create directory for '%s': "
- "%s", logfile->buf, strerror(errno));
- return -1;
- }
- oflags |= O_CREAT;
- }
-
- logfd = open(logfile->buf, oflags, 0666);
- if (logfd < 0) {
- if (!(oflags & O_CREAT) && (errno == ENOENT || errno == EISDIR))
- return 0;
+ if (raceproof_create_file(logfile, open_or_create_logfile, logfd)) {
+ if (errno == ENOENT)
+ strbuf_addf(err, "unable to create directory for '%s': "
+ "%s", logfile, strerror(errno));
+ else if (errno == EISDIR)
+ strbuf_addf(err, "there are still logs under '%s'",
+ logfile);
+ else
+ strbuf_addf(err, "unable to append to '%s': %s",
+ logfile, strerror(errno));
- if (errno == EISDIR) {
- if (remove_empty_directories(logfile)) {
- strbuf_addf(err, "there are still logs under "
- "'%s'", logfile->buf);
- return -1;
- }
- logfd = open(logfile->buf, oflags, 0666);
+ goto error;
}
-
- if (logfd < 0) {
- strbuf_addf(err, "unable to append to '%s': %s",
- logfile->buf, strerror(errno));
- return -1;
+ } else {
+ *logfd = open(logfile, O_APPEND | O_WRONLY, 0666);
+ if (*logfd < 0) {
+ if (errno == ENOENT || errno == EISDIR) {
+ /*
+ * The logfile doesn't already exist,
+ * but that is not an error; it only
+ * means that we won't write log
+ * entries to it.
+ */
+ ;
+ } else {
+ strbuf_addf(err, "unable to append to '%s': %s",
+ logfile, strerror(errno));
+ goto error;
+ }
}
}
- adjust_shared_perm(logfile->buf);
- close(logfd);
+ if (*logfd >= 0)
+ adjust_shared_perm(logfile);
+
+ free(logfile);
return 0;
-}
+error:
+ free(logfile);
+ return -1;
+}
static int files_create_reflog(struct ref_store *ref_store,
const char *refname, int force_create,
struct strbuf *err)
{
- int ret;
- struct strbuf sb = STRBUF_INIT;
+ int fd;
/* Check validity (but we don't need the result): */
files_downcast(ref_store, 0, "create_reflog");
- ret = log_ref_setup(refname, &sb, err, force_create);
- strbuf_release(&sb);
- return ret;
+ if (log_ref_setup(refname, force_create, &fd, err))
+ return -1;
+
+ if (fd >= 0)
+ close(fd);
+
+ return 0;
}
static int log_ref_write_fd(int fd, const unsigned char *old_sha1,
return 0;
}
-static int log_ref_write_1(const char *refname, const unsigned char *old_sha1,
- const unsigned char *new_sha1, const char *msg,
- struct strbuf *logfile, int flags,
- struct strbuf *err)
+int files_log_ref_write(const char *refname, const unsigned char *old_sha1,
+ const unsigned char *new_sha1, const char *msg,
+ int flags, struct strbuf *err)
{
- int logfd, result, oflags = O_APPEND | O_WRONLY;
+ int logfd, result;
- if (log_all_ref_updates < 0)
- log_all_ref_updates = !is_bare_repository();
+ if (log_all_ref_updates == LOG_REFS_UNSET)
+ log_all_ref_updates = is_bare_repository() ? LOG_REFS_NONE : LOG_REFS_NORMAL;
- result = log_ref_setup(refname, logfile, err, flags & REF_FORCE_CREATE_REFLOG);
+ result = log_ref_setup(refname, flags & REF_FORCE_CREATE_REFLOG,
+ &logfd, err);
if (result)
return result;
- logfd = open(logfile->buf, oflags);
if (logfd < 0)
return 0;
result = log_ref_write_fd(logfd, old_sha1, new_sha1,
git_committer_info(0), msg);
if (result) {
- strbuf_addf(err, "unable to append to '%s': %s", logfile->buf,
- strerror(errno));
+ int save_errno = errno;
+
+ strbuf_addf(err, "unable to append to '%s': %s",
+ git_path("logs/%s", refname), strerror(save_errno));
close(logfd);
return -1;
}
if (close(logfd)) {
- strbuf_addf(err, "unable to append to '%s': %s", logfile->buf,
- strerror(errno));
+ int save_errno = errno;
+
+ strbuf_addf(err, "unable to append to '%s': %s",
+ git_path("logs/%s", refname), strerror(save_errno));
return -1;
}
return 0;
}
-static int log_ref_write(const char *refname, const unsigned char *old_sha1,
- const unsigned char *new_sha1, const char *msg,
- int flags, struct strbuf *err)
-{
- return files_log_ref_write(refname, old_sha1, new_sha1, msg, flags,
- err);
-}
-
-int files_log_ref_write(const char *refname, const unsigned char *old_sha1,
- const unsigned char *new_sha1, const char *msg,
- int flags, struct strbuf *err)
-{
- struct strbuf sb = STRBUF_INIT;
- int ret = log_ref_write_1(refname, old_sha1, new_sha1, msg, &sb, flags,
- err);
- strbuf_release(&sb);
- return ret;
-}
-
/*
* Write sha1 into the open lockfile, then close the lockfile. On
* errors, rollback the lockfile, fill in *err and
const unsigned char *sha1, const char *logmsg,
struct strbuf *err)
{
- assert_main_repository(&refs->base, "commit_ref_update");
+ files_assert_main_repository(refs, "commit_ref_update");
clear_loose_ref_cache(refs);
- if (log_ref_write(lock->ref_name, lock->old_oid.hash, sha1, logmsg, 0, err)) {
+ if (files_log_ref_write(lock->ref_name, lock->old_oid.hash, sha1,
+ logmsg, 0, err)) {
char *old_msg = strbuf_detach(err, NULL);
strbuf_addf(err, "cannot update the ref '%s': %s",
lock->ref_name, old_msg);
if (head_ref && (head_flag & REF_ISSYMREF) &&
!strcmp(head_ref, lock->ref_name)) {
struct strbuf log_err = STRBUF_INIT;
- if (log_ref_write("HEAD", lock->old_oid.hash, sha1,
+ if (files_log_ref_write("HEAD", lock->old_oid.hash, sha1,
logmsg, 0, &log_err)) {
error("%s", log_err.buf);
strbuf_release(&log_err);
struct strbuf err = STRBUF_INIT;
unsigned char new_sha1[20];
if (logmsg && !read_ref(target, new_sha1) &&
- log_ref_write(refname, lock->old_oid.hash, new_sha1, logmsg, 0, &err)) {
+ files_log_ref_write(refname, lock->old_oid.hash, new_sha1,
+ logmsg, 0, &err)) {
error("%s", err.buf);
strbuf_release(&err);
}
int ret;
struct ref_lock *lock;
- assert_main_repository(&refs->base, "lock_ref_for_update");
+ files_assert_main_repository(refs, "lock_ref_for_update");
if ((update->flags & REF_HAVE_NEW) && is_null_sha1(update->new_sha1))
update->flags |= REF_DELETING;
if (update->flags & REF_NEEDS_COMMIT ||
update->flags & REF_LOG_ONLY) {
- if (log_ref_write(lock->ref_name, lock->old_oid.hash,
- update->new_sha1,
- update->msg, update->flags, err)) {
+ if (files_log_ref_write(lock->ref_name,
+ lock->old_oid.hash,
+ update->new_sha1,
+ update->msg, update->flags,
+ err)) {
char *old_msg = strbuf_detach(err, NULL);
strbuf_addf(err, "cannot update the ref '%s': %s",
if (update->flags & REF_DELETING &&
!(update->flags & REF_LOG_ONLY)) {
- if (delete_ref_loose(lock, update->type, err)) {
- ret = TRANSACTION_GENERIC_ERROR;
- goto cleanup;
+ if (!(update->type & REF_ISPACKED) ||
+ update->type & REF_ISSYMREF) {
+ /* It is a loose reference. */
+ if (unlink_or_msg(git_path("%s", lock->ref_name), err)) {
+ ret = TRANSACTION_GENERIC_ERROR;
+ goto cleanup;
+ }
+ update->flags |= REF_DELETED_LOOSE;
}
if (!(update->flags & REF_ISPRUNING))
ret = TRANSACTION_GENERIC_ERROR;
goto cleanup;
}
- for_each_string_list_item(ref_to_delete, &refs_to_delete)
- unlink_or_warn(git_path("logs/%s", ref_to_delete->string));
+
+ /* Delete the reflogs of any references that were deleted: */
+ for_each_string_list_item(ref_to_delete, &refs_to_delete) {
+ if (!unlink_or_warn(git_path("logs/%s", ref_to_delete->string)))
+ try_remove_empty_parents(ref_to_delete->string,
+ REMOVE_EMPTY_PARENTS_REFLOG);
+ }
+
clear_loose_ref_cache(refs);
cleanup:
transaction->state = REF_TRANSACTION_CLOSED;
- for (i = 0; i < transaction->nr; i++)
- if (transaction->updates[i]->backend_data)
- unlock_ref(transaction->updates[i]->backend_data);
+ for (i = 0; i < transaction->nr; i++) {
+ struct ref_update *update = transaction->updates[i];
+ struct ref_lock *lock = update->backend_data;
+
+ if (lock)
+ unlock_ref(lock);
+
+ if (update->flags & REF_DELETED_LOOSE) {
+ /*
+ * The loose reference was deleted. Delete any
+ * empty parent directories. (Note that this
+ * can only work because we have already
+ * removed the lockfile.)
+ */
+ try_remove_empty_parents(update->refname,
+ REMOVE_EMPTY_PARENTS_REF);
+ }
+ }
+
string_list_clear(&refs_to_delete, 0);
free(head_ref);
string_list_clear(&affected_refnames, 0);