main/syscalls/ktrace_control.md

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# zx_ktrace_control

## Summary

TODO(https://fxbug.dev/42108078)

## Declaration

```c
#include <zircon/syscalls.h>

zx_status_t zx_ktrace_control(zx_handle_t handle,
                              uint32_t action,
                              uint32_t options,
                              void* ptr);
```

## Description

To use the `zx_ktrace_control()` function, you must specify
`kernel.enable-debugging-syscalls=true` on the kernel command line. Otherwise,
the function returns `ZX_ERR_NOT_SUPPORTED`.

TODO(https://fxbug.dev/42108078)

## Rights

*handle* must have resource kind `ZX_RSRC_KIND_SYSTEM` with base
`ZX_RSRC_SYSTEM_TRACING_BASE`.

## Return value

TODO(https://fxbug.dev/42108078)

## Errors

TODO(https://fxbug.dev/42108078)

## See also

TODO(https://fxbug.dev/42108078)