zx_process_create

Summary

Create a new process.

Declaration

#include <zircon/syscalls.h>

zx_status_t zx_process_create(zx_handle_t job,
                              const char* name,
                              size_t name_size,
                              uint32_t options,
                              zx_handle_t* proc_handle,
                              zx_handle_t* vmar_handle);

Description

zx_process_create() creates a new process.

Upon success, handles for the new process and the root of its address space are returned. The thread will not start executing until zx_process_start() is called.

name is silently truncated to a maximum of ZX_MAX_NAME_LEN-1 characters.

When the last handle to a process is closed, the process is destroyed.

Process handles may be waited on and will assert the signal ZX_PROCESS_TERMINATED when the process exits.

job is the controlling job object for the new process, which will become a child of that job.

options can contain zero or the following flag:

  • ZX_PROCESS_SHARED to create a process that can share its address space with another process. Processes created with this flag can be passed to zx_process_create_shared().

Rights

job must be of type ZX_OBJ_TYPE_JOB and have ZX_RIGHT_MANAGE_PROCESS.

Caller job policy must allow ZX_POL_NEW_PROCESS.

Return value

On success, zx_process_create() returns ZX_OK, a handle to the new process (via proc_handle), and a handle to the root of its address space (via vmar_handle). In the event of failure, a negative error value is returned.

Errors

ZX_ERR_BAD_HANDLE job is not a valid handle.

ZX_ERR_WRONG_TYPE job is not a job handle.

ZX_ERR_ACCESS_DENIED job does not have the ZX_RIGHT_WRITE right (only when not ZX_HANDLE_INVALID).

ZX_ERR_INVALID_ARGS name, proc_handle, or vmar_handle was an invalid pointer, or options contained invalid options.

ZX_ERR_NO_MEMORY Failure due to lack of memory. There is no good way for userspace to handle this (unlikely) error. In a future build this error will no longer occur.

ZX_ERR_BAD_STATE The job object is in the dead state.

See also