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NFSD: Fix strncpy() fortify warning

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[ Upstream commit 5304877936c0a67e1a01464d113bae4c81eacdb6 ]

In function ‘strncpy’,
    inlined from ‘nfsd4_ssc_setup_dul’ at /home/cel/src/linux/manet/fs/nfsd/nfs4proc.c:1392:3,
    inlined from ‘nfsd4_interssc_connect’ at /home/cel/src/linux/manet/fs/nfsd/nfs4proc.c:1489:11:
/home/cel/src/linux/manet/include/linux/fortify-string.h:52:33: warning: ‘__builtin_strncpy’ specified bound 63 equals destination size [-Wstringop-truncation]
   52 | #define __underlying_strncpy    __builtin_strncpy
      |                                 ^
/home/cel/src/linux/manet/include/linux/fortify-string.h:89:16: note: in expansion of macro ‘__underlying_strncpy’
   89 |         return __underlying_strncpy(p, q, size);
      |                ^~~~~~~~~~~~~~~~~~~~

Signed-off-by: Chuck Lever <chuck.lever@oracle.com>
Signed-off-by: Sasha Levin <sashal@kernel.org>
This commit is contained in:
Chuck Lever 2022-07-27 14:40:03 -04:00 • committed by Ksawlii
parent 7b1c5f6a61
commit 22ed210e34
2 changed files with 2 additions and 2 deletions
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2
fs/nfsd/nfs4proc.c
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@ -1391,7 +1391,7 @@ try_again:
return 0;
}
if (work) {
strncpy(work->nsui_ipaddr, ipaddr, sizeof(work->nsui_ipaddr));
strlcpy(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);

2
include/linux/nfs_ssc.h
View file

@ -64,7 +64,7 @@ struct nfsd4_ssc_umount_item {
refcount_t nsui_refcnt;
unsigned long nsui_expire;
struct vfsmount *nsui_vfsmount;
char nsui_ipaddr[RPC_MAX_ADDRBUFLEN];
char nsui_ipaddr[RPC_MAX_ADDRBUFLEN + 1];
};
#endif