change errno to error to avoid confusion

syscalls/uname.c

@@ -20,7 +20,7 @@ struct syscall_ret sys_setuname(const __user struct __utsname* ptr) {
     struct syscall_ret ret = {};
 
     if (!ptr) {
-        ret.errno = EINVAL;
+        ret.error = EINVAL;
         return ret;
     }
 
@@ -28,7 +28,7 @@ struct syscall_ret sys_setuname(const __user struct __utsname* ptr) {
 
     struct __utsname read_buf;
     if (!usercopy_read(&read_buf, ptr, sizeof(read_buf))) {
-        ret.errno = EFAULT;
+        ret.error = EFAULT;
         return ret;
     }
 
@@ -50,7 +50,7 @@ struct syscall_ret sys_getuname(__user struct __utsname* ptr) {
     struct syscall_ret ret = {};
 
     if (!ptr) {
-        ret.errno = EINVAL;
+        ret.error = EINVAL;
         return ret;
     }
 
@@ -59,7 +59,7 @@ struct syscall_ret sys_getuname(__user struct __utsname* ptr) {
     spin_unlock(&uname_lock);
 
     if (!usercopy_write(ptr, &write_buf, sizeof(write_buf)))
-        ret.errno = EFAULT;
+        ret.error = EFAULT;
 
     return ret;
 }