---
title: mbuf_setflags
framework: Kernel
role: symbol
role_heading: Function
platforms: [macOS 10.4+]
path: kernel/1535683-mbuf_setflags
---

# mbuf_setflags

## Declaration

```occ
errno_t mbuf_setflags(mbuf_t mbuf, mbuf_flags_t flags);
```

## Parameters

- `mbuf`: The mbuf.
- `flags`: The flags that should be set, all other flags will be cleared. Certain flags such as MBUF_EXT cannot be altered.

## Return Value

Return Value 0 upon success otherwise the errno error.

## Discussion

Discussion Sets the set of set flags.