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Diffstat (limited to 'refs.c')
-rw-r--r--refs.c143
1 files changed, 90 insertions, 53 deletions
diff --git a/refs.c b/refs.c
index 5ff457ebfc..ed3b2cb405 100644
--- a/refs.c
+++ b/refs.c
@@ -1068,8 +1068,10 @@ static const char PACKED_REFS_HEADER[] =
* Return a pointer to the refname within the line (null-terminated),
* or NULL if there was a problem.
*/
-static const char *parse_ref_line(char *line, unsigned char *sha1)
+static const char *parse_ref_line(struct strbuf *line, unsigned char *sha1)
{
+ const char *ref;
+
/*
* 42: the answer to everything.
*
@@ -1078,22 +1080,23 @@ static const char *parse_ref_line(char *line, unsigned char *sha1)
* +1 (space in between hex and name)
* +1 (newline at the end of the line)
*/
- int len = strlen(line) - 42;
-
- if (len <= 0)
+ if (line->len <= 42)
return NULL;
- if (get_sha1_hex(line, sha1) < 0)
+
+ if (get_sha1_hex(line->buf, sha1) < 0)
return NULL;
- if (!isspace(line[40]))
+ if (!isspace(line->buf[40]))
return NULL;
- line += 41;
- if (isspace(*line))
+
+ ref = line->buf + 41;
+ if (isspace(*ref))
return NULL;
- if (line[len] != '\n')
+
+ if (line->buf[line->len - 1] != '\n')
return NULL;
- line[len] = 0;
+ line->buf[--line->len] = 0;
- return line;
+ return ref;
}
/*
@@ -1126,16 +1129,15 @@ static const char *parse_ref_line(char *line, unsigned char *sha1)
static void read_packed_refs(FILE *f, struct ref_dir *dir)
{
struct ref_entry *last = NULL;
- char refline[PATH_MAX];
+ struct strbuf line = STRBUF_INIT;
enum { PEELED_NONE, PEELED_TAGS, PEELED_FULLY } peeled = PEELED_NONE;
- while (fgets(refline, sizeof(refline), f)) {
+ while (strbuf_getwholeline(&line, f, '\n') != EOF) {
unsigned char sha1[20];
const char *refname;
- static const char header[] = "# pack-refs with:";
+ const char *traits;
- if (!strncmp(refline, header, sizeof(header)-1)) {
- const char *traits = refline + sizeof(header) - 1;
+ if (skip_prefix(line.buf, "# pack-refs with:", &traits)) {
if (strstr(traits, " fully-peeled "))
peeled = PEELED_FULLY;
else if (strstr(traits, " peeled "))
@@ -1144,7 +1146,7 @@ static void read_packed_refs(FILE *f, struct ref_dir *dir)
continue;
}
- refname = parse_ref_line(refline, sha1);
+ refname = parse_ref_line(&line, sha1);
if (refname) {
int flag = REF_ISPACKED;
@@ -1160,10 +1162,10 @@ static void read_packed_refs(FILE *f, struct ref_dir *dir)
continue;
}
if (last &&
- refline[0] == '^' &&
- strlen(refline) == PEELED_LINE_LENGTH &&
- refline[PEELED_LINE_LENGTH - 1] == '\n' &&
- !get_sha1_hex(refline + 1, sha1)) {
+ line.buf[0] == '^' &&
+ line.len == PEELED_LINE_LENGTH &&
+ line.buf[PEELED_LINE_LENGTH - 1] == '\n' &&
+ !get_sha1_hex(line.buf + 1, sha1)) {
hashcpy(last->u.value.peeled, sha1);
/*
* Regardless of what the file header said,
@@ -1173,6 +1175,8 @@ static void read_packed_refs(FILE *f, struct ref_dir *dir)
last->flag |= REF_KNOWS_PEELED;
}
}
+
+ strbuf_release(&line);
}
/*
@@ -2318,6 +2322,7 @@ static struct ref_lock *lock_ref_sha1_basic(const char *refname,
lock->lock_fd = hold_lock_file_for_update(lock->lk, ref_file, lflags);
if (lock->lock_fd < 0) {
+ last_errno = errno;
if (errno == ENOENT && --attempts_remaining > 0)
/*
* Maybe somebody just deleted one of the
@@ -2325,8 +2330,13 @@ static struct ref_lock *lock_ref_sha1_basic(const char *refname,
* again:
*/
goto retry;
- else
- unable_to_lock_die(ref_file, errno);
+ else {
+ struct strbuf err = STRBUF_INIT;
+ unable_to_lock_message(ref_file, errno, &err);
+ error("%s", err.buf);
+ strbuf_release(&err);
+ goto error_return;
+ }
}
return old_sha1 ? verify_lock(lock, old_sha1, mustexist) : lock;
@@ -2639,22 +2649,25 @@ static int curate_packed_ref_fn(struct ref_entry *entry, void *cb_data)
return 0;
}
-int repack_without_refs(const char **refnames, int n, struct strbuf *err)
+int repack_without_refs(struct string_list *refnames, struct strbuf *err)
{
struct ref_dir *packed;
struct string_list refs_to_delete = STRING_LIST_INIT_DUP;
- struct string_list_item *ref_to_delete;
- int i, ret, removed = 0;
+ struct string_list_item *refname, *ref_to_delete;
+ int ret, needs_repacking = 0, removed = 0;
assert(err);
/* Look for a packed ref */
- for (i = 0; i < n; i++)
- if (get_packed_ref(refnames[i]))
+ for_each_string_list_item(refname, refnames) {
+ if (get_packed_ref(refname->string)) {
+ needs_repacking = 1;
break;
+ }
+ }
/* Avoid locking if we have nothing to do */
- if (i == n)
+ if (!needs_repacking)
return 0; /* no refname exists in packed refs */
if (lock_packed_refs(0)) {
@@ -2664,8 +2677,8 @@ int repack_without_refs(const char **refnames, int n, struct strbuf *err)
packed = get_packed_refs(&ref_cache);
/* Remove refnames from the cache */
- for (i = 0; i < n; i++)
- if (remove_entry(packed, refnames[i]) != -1)
+ for_each_string_list_item(refname, refnames)
+ if (remove_entry(packed, refname->string) != -1)
removed = 1;
if (!removed) {
/*
@@ -3404,29 +3417,54 @@ int for_each_reflog_ent_reverse(const char *refname, each_reflog_ent_fn fn, void
bp = find_beginning_of_line(buf, scanp);
- if (*bp != '\n') {
- strbuf_splice(&sb, 0, 0, buf, endp - buf);
- if (pos)
- break; /* need to fill another block */
- scanp = buf - 1; /* leave loop */
- } else {
+ if (*bp == '\n') {
/*
- * (bp + 1) thru endp is the beginning of the
- * current line we have in sb
+ * The newline is the end of the previous line,
+ * so we know we have complete line starting
+ * at (bp + 1). Prefix it onto any prior data
+ * we collected for the line and process it.
*/
strbuf_splice(&sb, 0, 0, bp + 1, endp - (bp + 1));
scanp = bp;
endp = bp + 1;
+ ret = show_one_reflog_ent(&sb, fn, cb_data);
+ strbuf_reset(&sb);
+ if (ret)
+ break;
+ } else if (!pos) {
+ /*
+ * We are at the start of the buffer, and the
+ * start of the file; there is no previous
+ * line, and we have everything for this one.
+ * Process it, and we can end the loop.
+ */
+ strbuf_splice(&sb, 0, 0, buf, endp - buf);
+ ret = show_one_reflog_ent(&sb, fn, cb_data);
+ strbuf_reset(&sb);
+ break;
}
- ret = show_one_reflog_ent(&sb, fn, cb_data);
- strbuf_reset(&sb);
- if (ret)
+
+ if (bp == buf) {
+ /*
+ * We are at the start of the buffer, and there
+ * is more file to read backwards. Which means
+ * we are in the middle of a line. Note that we
+ * may get here even if *bp was a newline; that
+ * just means we are at the exact end of the
+ * previous line, rather than some spot in the
+ * middle.
+ *
+ * Save away what we have to be combined with
+ * the data from the next read.
+ */
+ strbuf_splice(&sb, 0, 0, buf, endp - buf);
break;
+ }
}
}
if (!ret && sb.len)
- ret = show_one_reflog_ent(&sb, fn, cb_data);
+ die("BUG: reverse reflog parser had leftover data");
fclose(logfp);
strbuf_release(&sb);
@@ -3738,10 +3776,11 @@ static int ref_update_reject_duplicates(struct ref_update **updates, int n,
int ref_transaction_commit(struct ref_transaction *transaction,
struct strbuf *err)
{
- int ret = 0, delnum = 0, i;
- const char **delnames;
+ int ret = 0, i;
int n = transaction->nr;
struct ref_update **updates = transaction->updates;
+ struct string_list refs_to_delete = STRING_LIST_INIT_NODUP;
+ struct string_list_item *ref_to_delete;
assert(err);
@@ -3753,9 +3792,6 @@ int ref_transaction_commit(struct ref_transaction *transaction,
return 0;
}
- /* Allocate work space */
- delnames = xmalloc(sizeof(*delnames) * n);
-
/* Copy, sort, and reject duplicate refs */
qsort(updates, n, sizeof(*updates), ref_update_compare);
if (ref_update_reject_duplicates(updates, n, err)) {
@@ -3815,16 +3851,17 @@ int ref_transaction_commit(struct ref_transaction *transaction,
}
if (!(update->flags & REF_ISPRUNING))
- delnames[delnum++] = update->lock->ref_name;
+ string_list_append(&refs_to_delete,
+ update->lock->ref_name);
}
}
- if (repack_without_refs(delnames, delnum, err)) {
+ if (repack_without_refs(&refs_to_delete, err)) {
ret = TRANSACTION_GENERIC_ERROR;
goto cleanup;
}
- for (i = 0; i < delnum; i++)
- unlink_or_warn(git_path("logs/%s", delnames[i]));
+ for_each_string_list_item(ref_to_delete, &refs_to_delete)
+ unlink_or_warn(git_path("logs/%s", ref_to_delete->string));
clear_loose_ref_cache(&ref_cache);
cleanup:
@@ -3833,7 +3870,7 @@ cleanup:
for (i = 0; i < n; i++)
if (updates[i]->lock)
unlock_ref(updates[i]->lock);
- free(delnames);
+ string_list_clear(&refs_to_delete, 0);
return ret;
}
generated by cgit v1.2.3 (git 2.25.1) at 2024-12-16 16:50:04 +0000