linux-kernel - [PATCH] nvme: move from strlcpy with unused retval to strscpy

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Date:   Thu, 18 Aug 2022 23:00:52 +0200
From:   Wolfram Sang <wsa+renesas@...g-engineering.com>
To:     linux-kernel@...r.kernel.org
Cc:     Wolfram Sang <wsa+renesas@...g-engineering.com>,
        Keith Busch <kbusch@...nel.org>, Jens Axboe <axboe@...com>,
        Christoph Hellwig <hch@....de>,
        Sagi Grimberg <sagi@...mberg.me>,
        Chaitanya Kulkarni <kch@...dia.com>,
        linux-nvme@...ts.infradead.org
Subject: [PATCH] nvme: move from strlcpy with unused retval to strscpy

Follow the advice of the below link and prefer 'strscpy' in this
subsystem. Conversion is 1:1 because the return value is not used.
Generated by a coccinelle script.

Link: https://lore.kernel.org/r/CAHk-=wgfRnXz0W3D37d01q3JFkr_i_uTL=V6A6G1oUZcprmknw@mail.gmail.com/
Signed-off-by: Wolfram Sang <wsa+renesas@...g-engineering.com>
---
 drivers/nvme/host/core.c        | 2 +-
 drivers/nvme/host/fabrics.c     | 2 +-
 drivers/nvme/target/admin-cmd.c | 2 +-
 drivers/nvme/target/discovery.c | 2 +-
 4 files changed, 4 insertions(+), 4 deletions(-)

diff --git a/drivers/nvme/host/core.c b/drivers/nvme/host/core.c
index af367b22871b..806696572a22 100644
--- a/drivers/nvme/host/core.c
+++ b/drivers/nvme/host/core.c
@@ -2696,7 +2696,7 @@ static void nvme_init_subnqn(struct nvme_subsystem *subsys, struct nvme_ctrl *ct
 	if(!(ctrl->quirks & NVME_QUIRK_IGNORE_DEV_SUBNQN)) {
 		nqnlen = strnlen(id->subnqn, NVMF_NQN_SIZE);
 		if (nqnlen > 0 && nqnlen < NVMF_NQN_SIZE) {
-			strlcpy(subsys->subnqn, id->subnqn, NVMF_NQN_SIZE);
+			strscpy(subsys->subnqn, id->subnqn, NVMF_NQN_SIZE);
 			return;
 		}
 
diff --git a/drivers/nvme/host/fabrics.c b/drivers/nvme/host/fabrics.c
index 10cc4a814602..61637c1dd722 100644
--- a/drivers/nvme/host/fabrics.c
+++ b/drivers/nvme/host/fabrics.c
@@ -49,7 +49,7 @@ static struct nvmf_host *nvmf_host_add(const char *hostnqn)
 		goto out_unlock;
 
 	kref_init(&host->ref);
-	strlcpy(host->nqn, hostnqn, NVMF_NQN_SIZE);
+	strscpy(host->nqn, hostnqn, NVMF_NQN_SIZE);
 
 	list_add_tail(&host->list, &nvmf_hosts);
 out_unlock:
diff --git a/drivers/nvme/target/admin-cmd.c b/drivers/nvme/target/admin-cmd.c
index fc8a957fad0a..c8a061ce3ee5 100644
--- a/drivers/nvme/target/admin-cmd.c
+++ b/drivers/nvme/target/admin-cmd.c
@@ -449,7 +449,7 @@ static void nvmet_execute_identify_ctrl(struct nvmet_req *req)
 	if (req->port->inline_data_size)
 		id->sgls |= cpu_to_le32(1 << 20);
 
-	strlcpy(id->subnqn, ctrl->subsys->subsysnqn, sizeof(id->subnqn));
+	strscpy(id->subnqn, ctrl->subsys->subsysnqn, sizeof(id->subnqn));
 
 	/*
 	 * Max command capsule size is sqe + in-capsule data size.
diff --git a/drivers/nvme/target/discovery.c b/drivers/nvme/target/discovery.c
index c2162eef8ce1..668d257fa986 100644
--- a/drivers/nvme/target/discovery.c
+++ b/drivers/nvme/target/discovery.c
@@ -292,7 +292,7 @@ static void nvmet_execute_disc_identify(struct nvmet_req *req)
 
 	id->oaes = cpu_to_le32(NVMET_DISC_AEN_CFG_OPTIONAL);
 
-	strlcpy(id->subnqn, ctrl->subsys->subsysnqn, sizeof(id->subnqn));
+	strscpy(id->subnqn, ctrl->subsys->subsysnqn, sizeof(id->subnqn));
 
 	status = nvmet_copy_to_sgl(req, 0, id, sizeof(*id));
 
-- 
2.35.1