Function map_create [src]

Prototype

pub fn map_create(map_type: MapType, key_size: u32, value_size: u32, max_entries: u32) !fd_t

Parameters

map_type: MapTypekey_size: u32value_size: u32max_entries: u32

Source

  pub fn map_create(map_type: MapType, key_size: u32, value_size: u32, max_entries: u32) !fd_t {
    var attr = Attr{
        .map_create = std.mem.zeroes(MapCreateAttr),
    };

    attr.map_create.map_type = @intFromEnum(map_type);
    attr.map_create.key_size = key_size;
    attr.map_create.value_size = value_size;
    attr.map_create.max_entries = max_entries;

    const rc = linux.bpf(.map_create, &attr, @sizeOf(MapCreateAttr));
    switch (errno(rc)) {
        .SUCCESS => return @as(fd_t, @intCast(rc)),
        .INVAL => return error.MapTypeOrAttrInvalid,
        .NOMEM => return error.SystemResources,
        .PERM => return error.PermissionDenied,
        else => |err| return unexpectedErrno(err),
    }
}  