zx_iob_create_shared_region
Summary
Creates a shared region that can be used with multiple IOBuffer objects.
Declaration
#include <zircon/syscalls-next.h> zx_status_t zx_iob_create_shared_region(uint64_t options, uint64_t size, zx_handle_t* out);
Description
Creates a shared region that can be used with multiple IOBuffer objects.
options must be zero. size must be a multiple of the page size.
Return value
On success, ZX_OK is returned and out will be populated with a new handle.
Errors
ZX_ERR_ACCESS_DENIED The proess does not have permissions to create shared IOBuffer regions.
ZX_ERR_INVALID_ARGS options was nonzero (there are no non-default options supported at this time), or size was zero or not a multiple of the page size.
ZX_ERR_NO_MEMORY Failure due to lack of memory to allocate the shared region.
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Last updated 2025-04-15 UTC.
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