fs/ecryptfs: replace snprintf with sysfs_emit in show function

Use sysfs_emit() instead of snprintf() in version_show() function to
follow the preferred kernel API.

Signed-off-by: Ankit Chauhan <ankitchauhan2065@gmail.com>
Link: https://lore.kernel.org/20250619031536.19352-1-ankitchauhan2065@gmail.com
Signed-off-by: Christian Brauner <brauner@kernel.org>

Author: ankitchauhan2065

fs/ecryptfs/main.c

@@ -20,6 +20,7 @@
 #include <linux/fs_context.h>
 #include <linux/fs_parser.h>
 #include <linux/fs_stack.h>
+#include <linux/sysfs.h>
 #include <linux/slab.h>
 #include <linux/magic.h>
 #include "ecryptfs_kernel.h"
@@ -764,7 +765,7 @@ static struct kobject *ecryptfs_kobj;
 static ssize_t version_show(struct kobject *kobj,
 			    struct kobj_attribute *attr, char *buff)
 {
-	return snprintf(buff, PAGE_SIZE, "%d\n", ECRYPTFS_VERSIONING_MASK);
+	return sysfs_emit(buff, "%d\n", ECRYPTFS_VERSIONING_MASK);
 }
 
 static struct kobj_attribute version_attr = __ATTR_RO(version);