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tools: hv: Fix a complier warning in the fcopy uio daemon

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hv_fcopy_uio_daemon.c:436:53: warning: '%s' directive output may be truncated
writing up to 14 bytes into a region of size 10 [-Wformat-truncation=]
  436 |  snprintf(uio_dev_path, sizeof(uio_dev_path), "/dev/%s", uio_name);

Also added 'static' for the array 'desc[]'.

Fixes: 82b0945ce2c2 ("tools: hv: Add new fcopy application based on uio driver")
Cc: stable@vger.kernel.org # 6.10+
Signed-off-by: Dexuan Cui <decui@microsoft.com>
Reviewed-by: Saurabh Sengar <ssengar@linux.microsoft.com>
Link: https://lore.kernel.org/r/20240910004433.50254-1-decui@microsoft.com
Signed-off-by: Wei Liu <wei.liu@kernel.org>
Message-ID: <20240910004433.50254-1-decui@microsoft.com>
This commit is contained in:
Dexuan Cui 2024-09-10 00:44:32 +00:00 committed by Wei Liu
parent fac04efc5c
commit cb1b78f1c7
1 changed files with 3 additions and 5 deletions
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8
tools/hv/hv_fcopy_uio_daemon.c
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@ -35,8 +35,6 @@
#define WIN8_SRV_MINOR 1
#define WIN8_SRV_VERSION (WIN8_SRV_MAJOR << 16 | WIN8_SRV_MINOR)
#define MAX_FOLDER_NAME 15
#define MAX_PATH_LEN 15
#define FCOPY_UIO "/sys/bus/vmbus/devices/eb765408-105f-49b6-b4aa-c123b64d17d4/uio"
#define FCOPY_VER_COUNT 1
@ -51,7 +49,7 @@ static const int fw_versions[] = {
#define HV_RING_SIZE 0x4000 /* 16KB ring buffer size */
unsigned char desc[HV_RING_SIZE];
static unsigned char desc[HV_RING_SIZE];
static int target_fd;
static char target_fname[PATH_MAX];
@ -409,8 +407,8 @@ int main(int argc, char *argv[])
struct vmbus_br txbr, rxbr;
void *ring;
uint32_t len = HV_RING_SIZE;
char uio_name[MAX_FOLDER_NAME] = {0};
char uio_dev_path[MAX_PATH_LEN] = {0};
char uio_name[NAME_MAX] = {0};
char uio_dev_path[PATH_MAX] = {0};
static struct option long_options[] = {
{"help", no_argument, 0, 'h' },