parisc: pdc_stable: use strscpy() to instead of strncpy()

The implementation of strscpy() is more robust and safer.
That's now the recommended way to copy NUL-terminated strings.

Signed-off-by: Xu Panda <xu.panda@zte.com.cn>
Signed-off-by: Yang Yang <yang.yang29@zte.com>
Signed-off-by: Helge Deller <deller@gmx.de>

diff --git a/drivers/parisc/pdc_stable.c b/drivers/parisc/pdc_stable.c
index d6af572..2a18f7b 100644 (file)
--- a/drivers/parisc/pdc_stable.c
+++ b/drivers/parisc/pdc_stable.c
@@ -274,8 +274,7 @@ pdcspath_hwpath_write(struct pdcspath_entry *entry, const char *buf, size_t coun
 
        /* We'll use a local copy of buf */
        count = min_t(size_t, count, sizeof(in)-1);
-       strncpy(in, buf, count);
-       in[count] = '\0';
+       strscpy(in, buf, count + 1);
        
        /* Let's clean up the target. 0xff is a blank pattern */
        memset(&hwpath, 0xff, sizeof(hwpath));
@@ -388,8 +387,7 @@ pdcspath_layer_write(struct pdcspath_entry *entry, const char *buf, size_t count
 
        /* We'll use a local copy of buf */
        count = min_t(size_t, count, sizeof(in)-1);
-       strncpy(in, buf, count);
-       in[count] = '\0';
+       strscpy(in, buf, count + 1);
        
        /* Let's clean up the target. 0 is a blank pattern */
        memset(&layers, 0, sizeof(layers));
@@ -756,8 +754,7 @@ static ssize_t pdcs_auto_write(struct kobject *kobj,
 
        /* We'll use a local copy of buf */
        count = min_t(size_t, count, sizeof(in)-1);
-       strncpy(in, buf, count);
-       in[count] = '\0';
+       strscpy(in, buf, count + 1);
 
        /* Current flags are stored in primary boot path entry */
        pathentry = &pdcspath_entry_primary;