diff options
| author | Noam Gottlieb <ngottlieb@nvidia.com> | 2021-06-07 12:23:21 +0300 |
|---|---|---|
| committer | Christoph Hellwig <hch@lst.de> | 2021-06-17 15:51:19 +0200 |
| commit | e13b061589ace0aee18bdbf86f3ddb2b6b5b5ab8 (patch) | |
| tree | 6fe78c77b7fffb70076c6c9c165e98cec7315ac1 /drivers/nvme/target/core.c | |
| parent | 2a4a910aa4f0acc428dc8d10227c42e14ed21d10 (diff) | |
| download | linux-e13b061589ace0aee18bdbf86f3ddb2b6b5b5ab8.tar.bz2 | |
nvmet: change sn size and check validity
According to the NVM specification, the serial_number should be 20 bytes
(bytes 23:04 of the Identify Controller data structure), and should
contain only ASCII characters.
In accordance, the serial_number size is changed to 20 bytes and before
any attempt to store a new value in serial_number we check that the
input is valid - i.e. contains only ASCII characters, is not empty and
does not exceed 20 bytes.
Signed-off-by: Max Gurtovoy <mgurtovoy@nvidia.com>
Signed-off-by: Noam Gottlieb <ngottlieb@nvidia.com>
Reviewed-by: Chaitanya Kulkarni <chaitanya.kulkarni@wdc.com>
Signed-off-by: Christoph Hellwig <hch@lst.de>
Diffstat (limited to 'drivers/nvme/target/core.c')
| -rw-r--r-- | drivers/nvme/target/core.c | 4 |
1 files changed, 3 insertions, 1 deletions
diff --git a/drivers/nvme/target/core.c b/drivers/nvme/target/core.c index 4ae4bea6625d..213a0c2af4f7 100644 --- a/drivers/nvme/target/core.c +++ b/drivers/nvme/target/core.c @@ -1493,6 +1493,7 @@ struct nvmet_subsys *nvmet_subsys_alloc(const char *subsysnqn, enum nvme_subsys_type type) { struct nvmet_subsys *subsys; + char serial[NVMET_SN_MAX_SIZE / 2]; subsys = kzalloc(sizeof(*subsys), GFP_KERNEL); if (!subsys) @@ -1500,7 +1501,8 @@ struct nvmet_subsys *nvmet_subsys_alloc(const char *subsysnqn, subsys->ver = NVMET_DEFAULT_VS; /* generate a random serial number as our controllers are ephemeral: */ - get_random_bytes(&subsys->serial, sizeof(subsys->serial)); + get_random_bytes(&serial, sizeof(serial)); + bin2hex(subsys->serial, &serial, sizeof(serial)); switch (type) { case NVME_NQN_NVME: |