mirror of
https://github.com/git/git.git
synced 2024-10-28 04:49:43 +01:00
reftable/record: handle allocation failures on copy
Handle allocation failures when copying records. While at it, convert from `xstrdup()` to `reftable_strdup()`. Adapt callsites to check for error codes. Signed-off-by: Patrick Steinhardt <ps@pks.im> Signed-off-by: Junio C Hamano <gitster@pobox.com>
This commit is contained in:
Patrick Steinhardt
Junio C Hamano
parent
eef7bcdafe
commit
ea194f9c46
2 changed files with 63 additions and 27 deletions
|
|
@ -215,13 +215,14 @@ static void reftable_ref_record_key(const void *r, struct strbuf *dest)
|
|||
strbuf_addstr(dest, rec->refname);
|
||||
}
|
||||
|
||||
static void reftable_ref_record_copy_from(void *rec, const void *src_rec,
|
||||
int hash_size)
|
||||
static int reftable_ref_record_copy_from(void *rec, const void *src_rec,
|
||||
int hash_size)
|
||||
{
|
||||
struct reftable_ref_record *ref = rec;
|
||||
const struct reftable_ref_record *src = src_rec;
|
||||
char *refname = NULL;
|
||||
size_t refname_cap = 0;
|
||||
int err;
|
||||
|
||||
assert(hash_size > 0);
|
||||
|
||||
|
|
@ -236,6 +237,11 @@ static void reftable_ref_record_copy_from(void *rec, const void *src_rec,
|
|||
|
||||
REFTABLE_ALLOC_GROW(ref->refname, refname_len + 1,
|
||||
ref->refname_cap);
|
||||
if (!ref->refname) {
|
||||
err = REFTABLE_OUT_OF_MEMORY_ERROR;
|
||||
goto out;
|
||||
}
|
||||
|
||||
memcpy(ref->refname, src->refname, refname_len);
|
||||
ref->refname[refname_len] = 0;
|
||||
}
|
||||
|
|
@ -254,9 +260,17 @@ static void reftable_ref_record_copy_from(void *rec, const void *src_rec,
|
|||
src->value.val2.target_value, hash_size);
|
||||
break;
|
||||
case REFTABLE_REF_SYMREF:
|
||||
ref->value.symref = xstrdup(src->value.symref);
|
||||
ref->value.symref = reftable_strdup(src->value.symref);
|
||||
if (!ref->value.symref) {
|
||||
err = REFTABLE_OUT_OF_MEMORY_ERROR;
|
||||
goto out;
|
||||
}
|
||||
break;
|
||||
}
|
||||
|
||||
err = 0;
|
||||
out:
|
||||
return err;
|
||||
}
|
||||
|
||||
static void reftable_ref_record_release_void(void *rec)
|
||||
|
|
@ -457,23 +471,28 @@ static void reftable_obj_record_release(void *rec)
|
|||
memset(obj, 0, sizeof(struct reftable_obj_record));
|
||||
}
|
||||
|
||||
static void reftable_obj_record_copy_from(void *rec, const void *src_rec,
|
||||
int hash_size UNUSED)
|
||||
static int reftable_obj_record_copy_from(void *rec, const void *src_rec,
|
||||
int hash_size UNUSED)
|
||||
{
|
||||
struct reftable_obj_record *obj = rec;
|
||||
const struct reftable_obj_record *src =
|
||||
(const struct reftable_obj_record *)src_rec;
|
||||
const struct reftable_obj_record *src = src_rec;
|
||||
|
||||
reftable_obj_record_release(obj);
|
||||
|
||||
REFTABLE_ALLOC_ARRAY(obj->hash_prefix, src->hash_prefix_len);
|
||||
if (!obj->hash_prefix)
|
||||
return REFTABLE_OUT_OF_MEMORY_ERROR;
|
||||
obj->hash_prefix_len = src->hash_prefix_len;
|
||||
if (src->hash_prefix_len)
|
||||
memcpy(obj->hash_prefix, src->hash_prefix, obj->hash_prefix_len);
|
||||
|
||||
REFTABLE_ALLOC_ARRAY(obj->offsets, src->offset_len);
|
||||
if (!obj->offsets)
|
||||
return REFTABLE_OUT_OF_MEMORY_ERROR;
|
||||
obj->offset_len = src->offset_len;
|
||||
COPY_ARRAY(obj->offsets, src->offsets, src->offset_len);
|
||||
|
||||
return 0;
|
||||
}
|
||||
|
||||
static uint8_t reftable_obj_record_val_type(const void *rec)
|
||||
|
|
@ -646,33 +665,44 @@ static void reftable_log_record_key(const void *r, struct strbuf *dest)
|
|||
strbuf_add(dest, i64, sizeof(i64));
|
||||
}
|
||||
|
||||
static void reftable_log_record_copy_from(void *rec, const void *src_rec,
|
||||
int hash_size)
|
||||
static int reftable_log_record_copy_from(void *rec, const void *src_rec,
|
||||
int hash_size)
|
||||
{
|
||||
struct reftable_log_record *dst = rec;
|
||||
const struct reftable_log_record *src =
|
||||
(const struct reftable_log_record *)src_rec;
|
||||
int ret;
|
||||
|
||||
reftable_log_record_release(dst);
|
||||
*dst = *src;
|
||||
|
||||
if (dst->refname) {
|
||||
dst->refname = xstrdup(dst->refname);
|
||||
dst->refname = reftable_strdup(dst->refname);
|
||||
if (!dst->refname) {
|
||||
ret = REFTABLE_OUT_OF_MEMORY_ERROR;
|
||||
goto out;
|
||||
}
|
||||
}
|
||||
|
||||
switch (dst->value_type) {
|
||||
case REFTABLE_LOG_DELETION:
|
||||
break;
|
||||
case REFTABLE_LOG_UPDATE:
|
||||
if (dst->value.update.email) {
|
||||
if (dst->value.update.email)
|
||||
dst->value.update.email =
|
||||
xstrdup(dst->value.update.email);
|
||||
}
|
||||
if (dst->value.update.name) {
|
||||
reftable_strdup(dst->value.update.email);
|
||||
if (dst->value.update.name)
|
||||
dst->value.update.name =
|
||||
xstrdup(dst->value.update.name);
|
||||
}
|
||||
if (dst->value.update.message) {
|
||||
reftable_strdup(dst->value.update.name);
|
||||
if (dst->value.update.message)
|
||||
dst->value.update.message =
|
||||
xstrdup(dst->value.update.message);
|
||||
reftable_strdup(dst->value.update.message);
|
||||
|
||||
if (!dst->value.update.email ||
|
||||
!dst->value.update.name ||
|
||||
!dst->value.update.message) {
|
||||
ret = REFTABLE_OUT_OF_MEMORY_ERROR;
|
||||
goto out;
|
||||
}
|
||||
|
||||
memcpy(dst->value.update.new_hash,
|
||||
|
|
@ -681,6 +711,10 @@ static void reftable_log_record_copy_from(void *rec, const void *src_rec,
|
|||
src->value.update.old_hash, hash_size);
|
||||
break;
|
||||
}
|
||||
|
||||
ret = 0;
|
||||
out:
|
||||
return ret;
|
||||
}
|
||||
|
||||
static void reftable_log_record_release_void(void *rec)
|
||||
|
|
@ -954,8 +988,8 @@ static void reftable_index_record_key(const void *r, struct strbuf *dest)
|
|||
strbuf_addbuf(dest, &rec->last_key);
|
||||
}
|
||||
|
||||
static void reftable_index_record_copy_from(void *rec, const void *src_rec,
|
||||
int hash_size UNUSED)
|
||||
static int reftable_index_record_copy_from(void *rec, const void *src_rec,
|
||||
int hash_size UNUSED)
|
||||
{
|
||||
struct reftable_index_record *dst = rec;
|
||||
const struct reftable_index_record *src = src_rec;
|
||||
|
|
@ -963,6 +997,8 @@ static void reftable_index_record_copy_from(void *rec, const void *src_rec,
|
|||
strbuf_reset(&dst->last_key);
|
||||
strbuf_addbuf(&dst->last_key, &src->last_key);
|
||||
dst->offset = src->offset;
|
||||
|
||||
return 0;
|
||||
}
|
||||
|
||||
static void reftable_index_record_release(void *rec)
|
||||
|
|
@ -1054,14 +1090,14 @@ int reftable_record_encode(struct reftable_record *rec, struct string_view dest,
|
|||
dest, hash_size);
|
||||
}
|
||||
|
||||
void reftable_record_copy_from(struct reftable_record *rec,
|
||||
int reftable_record_copy_from(struct reftable_record *rec,
|
||||
struct reftable_record *src, int hash_size)
|
||||
{
|
||||
assert(src->type == rec->type);
|
||||
|
||||
reftable_record_vtable(rec)->copy_from(reftable_record_data(rec),
|
||||
reftable_record_data(src),
|
||||
hash_size);
|
||||
return reftable_record_vtable(rec)->copy_from(reftable_record_data(rec),
|
||||
reftable_record_data(src),
|
||||
hash_size);
|
||||
}
|
||||
|
||||
uint8_t reftable_record_val_type(struct reftable_record *rec)
|
||||
|
|
|
|||
|
|
@ -44,7 +44,7 @@ struct reftable_record_vtable {
|
|||
/* The record type of ('r' for ref). */
|
||||
uint8_t type;
|
||||
|
||||
void (*copy_from)(void *dest, const void *src, int hash_size);
|
||||
int (*copy_from)(void *dest, const void *src, int hash_size);
|
||||
|
||||
/* a value of [0..7], indicating record subvariants (eg. ref vs. symref
|
||||
* vs ref deletion) */
|
||||
|
|
@ -137,8 +137,8 @@ void reftable_record_init(struct reftable_record *rec, uint8_t typ);
|
|||
int reftable_record_cmp(struct reftable_record *a, struct reftable_record *b);
|
||||
int reftable_record_equal(struct reftable_record *a, struct reftable_record *b, int hash_size);
|
||||
void reftable_record_key(struct reftable_record *rec, struct strbuf *dest);
|
||||
void reftable_record_copy_from(struct reftable_record *rec,
|
||||
struct reftable_record *src, int hash_size);
|
||||
int reftable_record_copy_from(struct reftable_record *rec,
|
||||
struct reftable_record *src, int hash_size);
|
||||
uint8_t reftable_record_val_type(struct reftable_record *rec);
|
||||
int reftable_record_encode(struct reftable_record *rec, struct string_view dest,
|
||||
int hash_size);
|
||||
|
|
|
|||
Loading…
Reference in a new issue