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Subject[PATCH] NFSD: move from strlcpy with unused retval to strscpy
Date
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@sang-engineering.com>
---
fs/nfsd/nfs4idmap.c | 8 ++++----
fs/nfsd/nfs4proc.c | 2 +-
fs/nfsd/nfssvc.c | 2 +-
3 files changed, 6 insertions(+), 6 deletions(-)

diff --git a/fs/nfsd/nfs4idmap.c b/fs/nfsd/nfs4idmap.c
index f92161ce1f97..e70a1a2999b7 100644
--- a/fs/nfsd/nfs4idmap.c
+++ b/fs/nfsd/nfs4idmap.c
@@ -82,8 +82,8 @@ ent_init(struct cache_head *cnew, struct cache_head *citm)
new->id = itm->id;
new->type = itm->type;

- strlcpy(new->name, itm->name, sizeof(new->name));
- strlcpy(new->authname, itm->authname, sizeof(new->authname));
+ strscpy(new->name, itm->name, sizeof(new->name));
+ strscpy(new->authname, itm->authname, sizeof(new->authname));
}

static void
@@ -548,7 +548,7 @@ idmap_name_to_id(struct svc_rqst *rqstp, int type, const char *name, u32 namelen
return nfserr_badowner;
memcpy(key.name, name, namelen);
key.name[namelen] = '\0';
- strlcpy(key.authname, rqst_authname(rqstp), sizeof(key.authname));
+ strscpy(key.authname, rqst_authname(rqstp), sizeof(key.authname));
ret = idmap_lookup(rqstp, nametoid_lookup, &key, nn->nametoid_cache, &item);
if (ret == -ENOENT)
return nfserr_badowner;
@@ -584,7 +584,7 @@ static __be32 idmap_id_to_name(struct xdr_stream *xdr,
int ret;
struct nfsd_net *nn = net_generic(SVC_NET(rqstp), nfsd_net_id);

- strlcpy(key.authname, rqst_authname(rqstp), sizeof(key.authname));
+ strscpy(key.authname, rqst_authname(rqstp), sizeof(key.authname));
ret = idmap_lookup(rqstp, idtoname_lookup, &key, nn->idtoname_cache, &item);
if (ret == -ENOENT)
return encode_ascii_id(xdr, id);
diff --git a/fs/nfsd/nfs4proc.c b/fs/nfsd/nfs4proc.c
index a72ab97f77ef..0437210b9898 100644
--- a/fs/nfsd/nfs4proc.c
+++ b/fs/nfsd/nfs4proc.c
@@ -1343,7 +1343,7 @@ static __be32 nfsd4_ssc_setup_dul(struct nfsd_net *nn, char *ipaddr,
return 0;
}
if (work) {
- strlcpy(work->nsui_ipaddr, ipaddr, sizeof(work->nsui_ipaddr) - 1);
+ strscpy(work->nsui_ipaddr, ipaddr, sizeof(work->nsui_ipaddr) - 1);
refcount_set(&work->nsui_refcnt, 2);
work->nsui_busy = true;
list_add_tail(&work->nsui_list, &nn->nfsd_ssc_mount_list);
diff --git a/fs/nfsd/nfssvc.c b/fs/nfsd/nfssvc.c
index 4bb5baa17040..bfbd9f672f59 100644
--- a/fs/nfsd/nfssvc.c
+++ b/fs/nfsd/nfssvc.c
@@ -799,7 +799,7 @@ nfsd_svc(int nrservs, struct net *net, const struct cred *cred)
if (nrservs == 0 && nn->nfsd_serv == NULL)
goto out;

- strlcpy(nn->nfsd_name, utsname()->nodename,
+ strscpy(nn->nfsd_name, utsname()->nodename,
sizeof(nn->nfsd_name));

error = nfsd_create_serv(net);
--
2.35.1
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