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nvme-core: rework a NQN copying operation 

Although it is easy to see that the code in nvme_init_subnqn() guarantees that
the subsys->nqn string is '\0'-terminated, apparently Coverity is not smart
enough to see this. Make it easier for Coverity to analyze this code by changing
the strncpy() call into a strlcpy() call. This patch does not change the
behavior of the code but fixes Coveritiy ID 1423720.

Signed-off-by: Bart Van Assche <bvanassche@acm.org>
Reviewed-by: Johannes Thumshirn <jthumshirn@suse.de>
Signed-off-by: Christoph Hellwig <hch@lst.de>
This commit is contained in:
Bart Van Assche 2018-10-08 14:28:41 -07:00 committed by Christoph Hellwig
parent eb090c4c94
commit bb2a1d4e80
1 changed files with 1 additions and 1 deletions
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2
drivers/nvme/host/core.c
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@ -2076,7 +2076,7 @@ static void nvme_init_subnqn(struct nvme_subsystem *subsys, struct nvme_ctrl *ct
nqnlen = strnlen(id->subnqn, NVMF_NQN_SIZE); nqnlen = strnlen(id->subnqn, NVMF_NQN_SIZE);
if (nqnlen > 0 && nqnlen < NVMF_NQN_SIZE) { if (nqnlen > 0 && nqnlen < NVMF_NQN_SIZE) {
strncpy(subsys->subnqn, id->subnqn, NVMF_NQN_SIZE); strlcpy(subsys->subnqn, id->subnqn, NVMF_NQN_SIZE);
return; return;
} }