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Thu, 30 Mar 2023 08:50:36 +0000 (UTC) Received: from dovecot-director2.suse.de ([192.168.254.65]) by imap2.suse-dmz.suse.de with ESMTPSA id 78G6E1xNJWQbIwAAMHmgww (envelope-from ); Thu, 30 Mar 2023 08:50:36 +0000 X-Outflank-Mailman: Message body and most headers restored to incoming version X-BeenThere: xen-devel@lists.xenproject.org List-Id: Xen developer discussion List-Unsubscribe: , List-Post: List-Help: List-Subscribe: , Errors-To: xen-devel-bounces@lists.xenproject.org Precedence: list Sender: "Xen-devel" X-Inumbo-ID: f0775447-ced7-11ed-85db-49a42c6b2330 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=suse.com; s=susede1; t=1680166236; h=from:from:reply-to:date:date:message-id:message-id:to:to:cc:cc: mime-version:mime-version: content-transfer-encoding:content-transfer-encoding: in-reply-to:in-reply-to:references:references; bh=mh22UmQC/9EYE48tEsEFwbVqpQAAehAkZgB8F1H4+sY=; b=EBcok8zLDq2vnVCOBh0/ulacFaGPeaJpsHEsURLa6cgq8a7CmCFJxU+OcVPLq1V5B1KA5X pVXbT7SwqDYmhxKWhmGhejdPV6jOy6vWeU3EqOr/VCxI0PFuQtDcaYjNM7JcXicUpmx9r0 /YngaGolj72p420Bm5x6Ecoxuzbj4bk= From: Juergen Gross To: xen-devel@lists.xenproject.org Cc: Juergen Gross , Wei Liu , Julien Grall , Anthony PERARD Subject: [PATCH v2 04/13] tools/xenstore: let hashtable_insert() return 0 on success Date: Thu, 30 Mar 2023 10:50:02 +0200 Message-Id: <20230330085011.9170-5-jgross@suse.com> X-Mailer: git-send-email 2.35.3 In-Reply-To: <20230330085011.9170-1-jgross@suse.com> References: <20230330085011.9170-1-jgross@suse.com> MIME-Version: 1.0 Content-Transfer-Encoding: quoted-printable X-ZohoMail-DKIM: pass (identity @suse.com) X-ZM-MESSAGEID: 1680166263657100002 Content-Type: text/plain; charset="utf-8" Today hashtable_insert() returns 0 in case of an error. Change that to let it return an errno value in the error case and 0 in case of success. Even if not used today, do the same switch for the return value of hashtable_expand(). Signed-off-by: Juergen Gross --- tools/xenstore/hashtable.c | 15 ++++++++++----- tools/xenstore/hashtable.h | 2 +- tools/xenstore/xenstored_core.c | 4 ++-- tools/xenstore/xenstored_domain.c | 4 ++-- tools/xenstore/xenstored_transaction.c | 4 ++-- 5 files changed, 17 insertions(+), 12 deletions(-) diff --git a/tools/xenstore/hashtable.c b/tools/xenstore/hashtable.c index ab1e687d0b..084d562b22 100644 --- a/tools/xenstore/hashtable.c +++ b/tools/xenstore/hashtable.c @@ -105,14 +105,15 @@ static int hashtable_expand(struct hashtable *h) struct entry **pE; unsigned int newsize, i, index; /* Check we're not hitting max capacity */ - if (h->primeindex =3D=3D (PRIME_TABLE_LEN - 1)) return 0; + if (h->primeindex =3D=3D (PRIME_TABLE_LEN - 1)) + return ENOSPC; newsize =3D primes[++(h->primeindex)]; =20 newtable =3D talloc_realloc(h, h->table, struct entry *, newsize); if (!newtable) { h->primeindex--; - return 0; + return ENOMEM; } =20 h->table =3D newtable; @@ -136,7 +137,7 @@ static int hashtable_expand(struct hashtable *h) =20 h->tablelength =3D newsize; h->loadlimit =3D loadlimit(h->primeindex); - return -1; + return 0; } =20 int hashtable_insert(struct hashtable *h, void *k, void *v) @@ -153,7 +154,11 @@ int hashtable_insert(struct hashtable *h, void *k, voi= d *v) hashtable_expand(h); } e =3D talloc_zero(h, struct entry); - if (NULL =3D=3D e) { --(h->entrycount); return 0; } /*oom*/ + if (NULL =3D=3D e) + { + --h->entrycount; + return ENOMEM; + } e->h =3D hash(h,k); index =3D indexFor(h->tablelength,e->h); e->k =3D k; @@ -164,7 +169,7 @@ int hashtable_insert(struct hashtable *h, void *k, void= *v) talloc_steal(e, v); e->next =3D h->table[index]; h->table[index] =3D e; - return -1; + return 0; } =20 void *hashtable_search(const struct hashtable *h, const void *k) diff --git a/tools/xenstore/hashtable.h b/tools/xenstore/hashtable.h index 0e1a6f61c2..ee4e25cbbf 100644 --- a/tools/xenstore/hashtable.h +++ b/tools/xenstore/hashtable.h @@ -36,7 +36,7 @@ create_hashtable(const void *ctx, const char *name, * @param h the hashtable to insert into * @param k the key - hashtable claims ownership and will free on remo= val * @param v the value - does not claim ownership - * @return non-zero for successful insertion + * @return zero for successful insertion * * This function will cause the table to expand if the insertion would take * the ratio of entries to table size over the maximum load factor. diff --git a/tools/xenstore/xenstored_core.c b/tools/xenstore/xenstored_cor= e.c index 6ce7be3161..c5433e5b3f 100644 --- a/tools/xenstore/xenstored_core.c +++ b/tools/xenstore/xenstored_core.c @@ -2394,7 +2394,7 @@ int remember_string(struct hashtable *hash, const cha= r *str) char *k =3D talloc_strdup(NULL, str); =20 if (!k) - return 0; + return ENOMEM; return hashtable_insert(hash, k, (void *)1); } =20 @@ -2428,7 +2428,7 @@ static int check_store_step(const void *ctx, struct c= onnection *conn, : WALK_TREE_SKIP_CHILDREN; } =20 - if (!remember_string(data->reachable, node->name)) + if (remember_string(data->reachable, node->name)) return WALK_TREE_ERROR_STOP; =20 domain_check_acc_add(node, data->domains); diff --git a/tools/xenstore/xenstored_domain.c b/tools/xenstore/xenstored_d= omain.c index 6d40aefc63..be9175a461 100644 --- a/tools/xenstore/xenstored_domain.c +++ b/tools/xenstore/xenstored_domain.c @@ -540,7 +540,7 @@ static struct domain *alloc_domain(const void *context,= unsigned int domid) domain->generation =3D generation; domain->introduced =3D false; =20 - if (!hashtable_insert(domhash, &domain->domid, domain)) { + if (hashtable_insert(domhash, &domain->domid, domain)) { talloc_free(domain); errno =3D ENOMEM; return NULL; @@ -1792,7 +1792,7 @@ static int domain_check_acc_init_sub(const void *k, v= oid *v, void *arg) */ dom->nodes =3D -d->acc[ACC_NODES].val; =20 - if (!hashtable_insert(domains, &dom->domid, dom)) { + if (hashtable_insert(domains, &dom->domid, dom)) { talloc_free(dom); return -1; } diff --git a/tools/xenstore/xenstored_transaction.c b/tools/xenstore/xensto= red_transaction.c index e8968d7a1d..c615c0de13 100644 --- a/tools/xenstore/xenstored_transaction.c +++ b/tools/xenstore/xenstored_transaction.c @@ -600,13 +600,13 @@ int check_transactions(struct hashtable *hash) list_for_each_entry(trans, &conn->transaction_list, list) { tname =3D talloc_asprintf(trans, "%"PRIu64, trans->generation); - if (!tname || !remember_string(hash, tname)) + if (!tname || remember_string(hash, tname)) goto nomem; =20 list_for_each_entry(i, &trans->accessed, list) { if (!i->ta_node) continue; - if (!remember_string(hash, i->trans_name)) + if (remember_string(hash, i->trans_name)) goto nomem; } =20 --=20 2.35.3