Skip to main content

fdt_get_property_by_offset

libfdt_sys

Function fdt_get_property_by_offset 

Source 
pub unsafe extern "C" fn fdt_get_property_by_offset(
    fdt: *const c_void,
    offset: c_int,
    lenp: *mut c_int,
) -> *const fdt_property
Expand description

fdt_get_property_by_offset - retrieve the property at a given offset @fdt: pointer to the device tree blob @offset: offset of the property to retrieve @lenp: pointer to an integer variable (will be overwritten) or NULL

fdt_get_property_by_offset() retrieves a pointer to the fdt_property structure within the device tree blob at the given offset. If lenp is non-NULL, the length of the property value is also returned, in the integer pointed to by lenp.

Note that this code only works on device tree versions >= 16. fdt_getprop() works on all versions.

returns: pointer to the structure representing the property if lenp is non-NULL, *lenp contains the length of the property value (>=0) NULL, on error if lenp is non-NULL, *lenp contains an error code (<0): -FDT_ERR_BADOFFSET, nodeoffset did not point to FDT_PROP tag -FDT_ERR_BADMAGIC, -FDT_ERR_BADVERSION, -FDT_ERR_BADSTATE, -FDT_ERR_BADSTRUCTURE, -FDT_ERR_TRUNCATED, standard meanings