git_path() and friends are going to be killed in files-backend.c in near
future. And because there's a risk with overwriting buffer in
git_path(), let's convert them all to strbuf_git_path(). We'll have
easier time killing/converting strbuf_git_path() then because we won't
have to worry about memory management again.
Signed-off-by: Nguyễn Thái Ngọc Duy <pclouds@xxxxxxxxx>
---
refs/files-backend.c | 130 ++++++++++++++++++++++++++++++++++++++-------------
1 file changed, 97 insertions(+), 33 deletions(-)
diff --git a/refs/files-backend.c b/refs/files-backend.c
index 6282e5868f..54e698dcea 100644
--- a/refs/files-backend.c
+++ b/refs/files-backend.c
@@ -2319,6 +2319,7 @@ enum {
static void try_remove_empty_parents(const char *refname, unsigned int flags)
{
struct strbuf buf = STRBUF_INIT;
+ struct strbuf sb = STRBUF_INIT;
char *p, *q;
int i;
@@ -2340,14 +2341,19 @@ static void try_remove_empty_parents(const char *refname, unsigned int flags)
if (q == p)
break;
strbuf_setlen(&buf, q - buf.buf);
- if ((flags & REMOVE_EMPTY_PARENTS_REF) &&
- rmdir(git_path("%s", buf.buf)))
+
+ strbuf_reset(&sb);
+ strbuf_git_path(&sb, "%s", buf.buf);
+ if ((flags & REMOVE_EMPTY_PARENTS_REF) && rmdir(sb.buf))
flags &= ~REMOVE_EMPTY_PARENTS_REF;
- if ((flags & REMOVE_EMPTY_PARENTS_REFLOG) &&
- rmdir(git_path("logs/%s", buf.buf)))
+
+ strbuf_reset(&sb);
+ strbuf_git_path(&sb, "logs/%s", buf.buf);
+ if ((flags & REMOVE_EMPTY_PARENTS_REFLOG) && rmdir(sb.buf))
flags &= ~REMOVE_EMPTY_PARENTS_REFLOG;
}
strbuf_release(&buf);
+ strbuf_release(&sb);
}
/* make sure nobody touched the ref, and unlink */
@@ -2509,11 +2515,16 @@ static int files_delete_refs(struct ref_store *ref_store,
*/
#define TMP_RENAMED_LOG "logs/refs/.tmp-renamed-log"
-static int rename_tmp_log_callback(const char *path, void *cb)
+struct rename_cb {
+ const char *tmp_renamed_log;
+ int true_errno;
+};
+
+static int rename_tmp_log_callback(const char *path, void *cb_data)
{
- int *true_errno = cb;
+ struct rename_cb *cb = cb_data;
- if (rename(git_path(TMP_RENAMED_LOG), path)) {
+ if (rename(cb->tmp_renamed_log, path)) {
/*
* rename(a, b) when b is an existing directory ought
* to result in ISDIR, but Solaris 5.8 gives ENOTDIR.
@@ -2521,7 +2532,7 @@ static int rename_tmp_log_callback(const char *path, void *cb)
* but report EISDIR to raceproof_create_file() so
* that it knows to retry.
*/
- *true_errno = errno;
+ cb->true_errno = errno;
if (errno == ENOTDIR)
errno = EISDIR;
return -1;
@@ -2532,20 +2543,26 @@ static int rename_tmp_log_callback(const char *path, void *cb)
static int rename_tmp_log(const char *newrefname)
{
- char *path = git_pathdup("logs/%s", newrefname);
- int ret, true_errno;
+ struct strbuf path = STRBUF_INIT;
+ struct strbuf tmp = STRBUF_INIT;
+ struct rename_cb cb;
+ int ret;
- ret = raceproof_create_file(path, rename_tmp_log_callback, &true_errno);
+ strbuf_git_path(&path, "logs/%s", newrefname);
+ strbuf_git_path(&tmp, TMP_RENAMED_LOG);
+ cb.tmp_renamed_log = tmp.buf;
+ ret = raceproof_create_file(path.buf, rename_tmp_log_callback, &cb);
if (ret) {
if (errno == EISDIR)
- error("directory not empty: %s", path);
+ error("directory not empty: %s", path.buf);
else
error("unable to move logfile %s to %s: %s",
- git_path(TMP_RENAMED_LOG), path,
- strerror(true_errno));
+ tmp.buf, path.buf,
+ strerror(cb.true_errno));
}
- free(path);
+ strbuf_release(&path);
+ strbuf_release(&tmp);
return ret;
}
@@ -2586,10 +2603,17 @@ static int files_rename_ref(struct ref_store *ref_store,
int flag = 0, logmoved = 0;
struct ref_lock *lock;
struct stat loginfo;
- int log = !lstat(git_path("logs/%s", oldrefname), &loginfo);
+ struct strbuf sb_oldref = STRBUF_INIT;
+ struct strbuf sb_newref = STRBUF_INIT;
+ struct strbuf tmp_renamed_log = STRBUF_INIT;
+ int log, ret;
struct strbuf err = STRBUF_INIT;
- int ret;
+ strbuf_git_path(&sb_oldref, "logs/%s", oldrefname);
+ strbuf_git_path(&sb_newref, "logs/%s", newrefname);
+ strbuf_git_path(&tmp_renamed_log, TMP_RENAMED_LOG);
+
+ log = !lstat(sb_oldref.buf, &loginfo);
if (log && S_ISLNK(loginfo.st_mode)) {
ret = error("reflog for %s is a symlink", oldrefname);
goto out;
@@ -2611,7 +2635,7 @@ static int files_rename_ref(struct ref_store *ref_store,
goto out;
}
- if (log && rename(git_path("logs/%s", oldrefname), git_path(TMP_RENAMED_LOG))) {
+ if (log && rename(sb_oldref.buf, tmp_renamed_log.buf)) {
ret = error("unable to move logfile logs/%s to "TMP_RENAMED_LOG": %s",
oldrefname, strerror(errno));
goto out;
@@ -2693,16 +2717,19 @@ static int files_rename_ref(struct ref_store *ref_store,
log_all_ref_updates = flag;
rollbacklog:
- if (logmoved && rename(git_path("logs/%s", newrefname), git_path("logs/%s", oldrefname)))
+ if (logmoved && rename(sb_newref.buf, sb_oldref.buf))
error("unable to restore logfile %s from %s: %s",
oldrefname, newrefname, strerror(errno));
if (!logmoved && log &&
- rename(git_path(TMP_RENAMED_LOG), git_path("logs/%s", oldrefname)))
+ rename(tmp_renamed_log.buf, sb_oldref.buf))
error("unable to restore logfile %s from "TMP_RENAMED_LOG": %s",
oldrefname, strerror(errno));
-
ret = 1;
out:
+ strbuf_release(&sb_newref);
+ strbuf_release(&sb_oldref);
+ strbuf_release(&tmp_renamed_log);
+
return ret;
}
@@ -2875,18 +2902,24 @@ int files_log_ref_write(const char *refname, const unsigned char *old_sha1,
result = log_ref_write_fd(logfd, old_sha1, new_sha1,
git_committer_info(0), msg);
if (result) {
+ struct strbuf sb = STRBUF_INIT;
int save_errno = errno;
+ strbuf_git_path(&sb, "logs/%s", refname);
strbuf_addf(err, "unable to append to '%s': %s",
- git_path("logs/%s", refname), strerror(save_errno));
+ sb.buf, strerror(save_errno));
+ strbuf_release(&sb);
close(logfd);
return -1;
}
if (close(logfd)) {
+ struct strbuf sb = STRBUF_INIT;
int save_errno = errno;
+ strbuf_git_path(&sb, "logs/%s", refname);
strbuf_addf(err, "unable to append to '%s': %s",
- git_path("logs/%s", refname), strerror(save_errno));
+ sb.buf, strerror(save_errno));
+ strbuf_release(&sb);
return -1;
}
return 0;
@@ -3106,22 +3139,32 @@ int set_worktree_head_symref(const char *gitdir, const char *target, const char
static int files_reflog_exists(struct ref_store *ref_store,
const char *refname)
{
+ struct strbuf sb = STRBUF_INIT;
struct stat st;
+ int ret;
/* Check validity (but we don't need the result): */
files_downcast(ref_store, 0, "reflog_exists");
- return !lstat(git_path("logs/%s", refname), &st) &&
- S_ISREG(st.st_mode);
+ strbuf_git_path(&sb, "logs/%s", refname);
+ ret = !lstat(sb.buf, &st) && S_ISREG(st.st_mode);
+ strbuf_release(&sb);
+ return ret;
}
static int files_delete_reflog(struct ref_store *ref_store,
const char *refname)
{
+ struct strbuf sb = STRBUF_INIT;
+ int ret;
+
/* Check validity (but we don't need the result): */
files_downcast(ref_store, 0, "delete_reflog");
- return remove_path(git_path("logs/%s", refname));
+ strbuf_git_path(&sb, "logs/%s", refname);
+ ret = remove_path(sb.buf);
+ strbuf_release(&sb);
+ return ret;
}
static int show_one_reflog_ent(struct strbuf *sb, each_reflog_ent_fn fn, void *cb_data)
@@ -3177,7 +3220,9 @@ static int files_for_each_reflog_ent_reverse(struct ref_store *ref_store,
/* Check validity (but we don't need the result): */
files_downcast(ref_store, 0, "for_each_reflog_ent_reverse");
- logfp = fopen(git_path("logs/%s", refname), "r");
+ strbuf_git_path(&sb, "logs/%s", refname);
+ logfp = fopen(sb.buf, "r");
+ strbuf_release(&sb);
if (!logfp)
return -1;
@@ -3283,7 +3328,9 @@ static int files_for_each_reflog_ent(struct ref_store *ref_store,
/* Check validity (but we don't need the result): */
files_downcast(ref_store, 0, "for_each_reflog_ent");
- logfp = fopen(git_path("logs/%s", refname), "r");
+ strbuf_git_path(&sb, "logs/%s", refname);
+ logfp = fopen(sb.buf, "r");
+ strbuf_release(&sb);
if (!logfp)
return -1;
@@ -3365,12 +3412,15 @@ static struct ref_iterator *files_reflog_iterator_begin(struct ref_store *ref_st
{
struct files_reflog_iterator *iter = xcalloc(1, sizeof(*iter));
struct ref_iterator *ref_iterator = &iter->base;
+ struct strbuf sb = STRBUF_INIT;
/* Check validity (but we don't need the result): */
files_downcast(ref_store, 0, "reflog_iterator_begin");
base_ref_iterator_init(ref_iterator, &files_reflog_iterator_vtable);
- iter->dir_iterator = dir_iterator_begin(git_path("logs"));
+ strbuf_git_path(&sb, "logs");
+ iter->dir_iterator = dir_iterator_begin(sb.buf);
+ strbuf_release(&sb);
return ref_iterator;
}
@@ -3708,6 +3758,7 @@ static int files_transaction_commit(struct ref_store *ref_store,
char *head_ref = NULL;
int head_type;
struct object_id head_oid;
+ struct strbuf sb = STRBUF_INIT;
assert(err);
@@ -3829,7 +3880,9 @@ static int files_transaction_commit(struct ref_store *ref_store,
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)) {
+ strbuf_reset(&sb);
+ strbuf_git_path(&sb, "%s", lock->ref_name);
+ if (unlink_or_msg(sb.buf, err)) {
ret = TRANSACTION_GENERIC_ERROR;
goto cleanup;
}
@@ -3849,7 +3902,9 @@ static int files_transaction_commit(struct ref_store *ref_store,
/* 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)))
+ strbuf_reset(&sb);
+ strbuf_git_path(&sb, "logs/%s", ref_to_delete->string);
+ if (!unlink_or_warn(sb.buf))
try_remove_empty_parents(ref_to_delete->string,
REMOVE_EMPTY_PARENTS_REFLOG);
}
@@ -3857,6 +3912,7 @@ static int files_transaction_commit(struct ref_store *ref_store,
clear_loose_ref_cache(refs);
cleanup:
+ strbuf_release(&sb);
transaction->state = REF_TRANSACTION_CLOSED;
for (i = 0; i < transaction->nr; i++) {
@@ -4123,14 +4179,22 @@ static int files_reflog_expire(struct ref_store *ref_store,
static int files_init_db(struct ref_store *ref_store, struct strbuf *err)
{
+ struct strbuf sb = STRBUF_INIT;
+
/* Check validity (but we don't need the result): */
files_downcast(ref_store, 0, "init_db");
/*
* Create .git/refs/{heads,tags}
*/
- safe_create_dir(git_path("refs/heads"), 1);
- safe_create_dir(git_path("refs/tags"), 1);
+ strbuf_git_path(&sb, "refs/heads");
+ safe_create_dir(sb.buf, 1);
+
+ strbuf_reset(&sb);
+ strbuf_git_path(&sb, "refs/tags");
+ safe_create_dir(sb.buf, 1);
+
+ strbuf_release(&sb);
return 0;
}
--
2.11.0.157.gd943d85