HelenOS sources
#ifndef _ABI_IPC_INTERFACES_H_
#define _ABI_IPC_INTERFACES_H_
#include <abi/fourcc.h>
enum {
        IFACE_EXCHANGE_MASK = 0x03,
        IFACE_MOD_MASK      = 0x04,
};
typedef enum {
        
        IFACE_EXCHANGE_ATOMIC = 0x00,
        
        IFACE_EXCHANGE_SERIALIZE = 0x01,
        
        IFACE_EXCHANGE_PARALLEL = 0x02
} iface_exch_mgmt_t;
typedef enum {
        IFACE_MOD_NONE = 0x00,
        IFACE_MOD_CALLBACK = 0x04
} iface_mod_t;
typedef enum {
        INTERFACE_ANY = 0,
        INTERFACE_LOADER =
            FOURCC_COMPACT('l', 'o', 'a', 'd') | IFACE_EXCHANGE_SERIALIZE,
        INTERFACE_PAGER =
            FOURCC_COMPACT('p', 'a', 'g', 'e') | IFACE_EXCHANGE_ATOMIC,
        INTERFACE_LOGGER_WRITER =
            FOURCC_COMPACT('l', 'o', 'g', 'w') | IFACE_EXCHANGE_SERIALIZE,
        INTERFACE_LOGGER_CONTROL =
            FOURCC_COMPACT('l', 'o', 'g', 'c') | IFACE_EXCHANGE_SERIALIZE,
        INTERFACE_CORECFG =
            FOURCC_COMPACT('c', 'c', 'f', 'g') | IFACE_EXCHANGE_SERIALIZE,
        INTERFACE_FS =
            FOURCC_COMPACT('f', 's', ' ', ' ') | IFACE_EXCHANGE_SERIALIZE,
        INTERFACE_VFS =
            FOURCC_COMPACT('v', 'f', 's', ' ') | IFACE_EXCHANGE_PARALLEL,
        INTERFACE_VFS_DRIVER =
            FOURCC_COMPACT('v', 'f', 's', 'd') | IFACE_EXCHANGE_SERIALIZE,
        INTERFACE_VFS_DRIVER_CB =
            FOURCC_COMPACT('v', 'f', 's', 'd') | IFACE_EXCHANGE_PARALLEL | IFACE_MOD_CALLBACK,
        INTERFACE_BLOCK =
            FOURCC_COMPACT('b', 'l', 'd', 'v') | IFACE_EXCHANGE_SERIALIZE,
        INTERFACE_BLOCK_CB =
            FOURCC_COMPACT('b', 'l', 'd', 'v') | IFACE_EXCHANGE_SERIALIZE | IFACE_MOD_CALLBACK,
        INTERFACE_CONSOLE =
            FOURCC_COMPACT('c', 'o', 'n', 's') | IFACE_EXCHANGE_SERIALIZE,
        INTERFACE_INPUT =
            FOURCC_COMPACT('i', 'n', 'd', 'v') | IFACE_EXCHANGE_ATOMIC,
        INTERFACE_INPUT_CB =
            FOURCC_COMPACT('i', 'n', 'd', 'v') | IFACE_EXCHANGE_SERIALIZE | IFACE_MOD_CALLBACK,
        INTERFACE_OUTPUT =
            FOURCC_COMPACT('o', 'u', 'd', 'v') | IFACE_EXCHANGE_SERIALIZE,
        INTERFACE_HOUND =
            FOURCC_COMPACT('h', 'o', 'u', 'n') | IFACE_EXCHANGE_PARALLEL,
        INTERFACE_LOC_SUPPLIER =
            FOURCC_COMPACT('l', 'o', 'c', 's') | IFACE_EXCHANGE_SERIALIZE,
        INTERFACE_LOC_CONSUMER =
            FOURCC_COMPACT('l', 'o', 'c', 'c') | IFACE_EXCHANGE_SERIALIZE,
        INTERFACE_LOC_CB =
            FOURCC_COMPACT('l', 'o', 'c', ' ') | IFACE_EXCHANGE_SERIALIZE | IFACE_MOD_CALLBACK,
        INTERFACE_DEVMAN_DEVICE =
            FOURCC_COMPACT('d', 'v', 'd', 'v') | IFACE_EXCHANGE_PARALLEL,
        INTERFACE_DEVMAN_PARENT =
            FOURCC_COMPACT('d', 'v', 'p', 't') | IFACE_EXCHANGE_SERIALIZE,
        INTERFACE_IRC =
            FOURCC_COMPACT('i', 'r', 'c', ' ') | IFACE_EXCHANGE_SERIALIZE,
        INTERFACE_DDF =
            FOURCC_COMPACT('d', 'd', 'f', ' ') | IFACE_EXCHANGE_SERIALIZE,
        INTERFACE_DDF_DEVMAN =
            FOURCC_COMPACT('d', 'd', 'f', 'm') | IFACE_EXCHANGE_SERIALIZE,
        INTERFACE_DDF_CLIENT =
            FOURCC_COMPACT('d', 'd', 'f', 'c') | IFACE_EXCHANGE_SERIALIZE,
        INTERFACE_DDF_DRIVER =
            FOURCC_COMPACT('d', 'd', 'f', 'd') | IFACE_EXCHANGE_SERIALIZE,
        INTERFACE_INET =
            FOURCC_COMPACT('i', 'n', 'e', 't') | IFACE_EXCHANGE_SERIALIZE,
        INTERFACE_INET_CB =
            FOURCC_COMPACT('i', 'n', 'e', 't') | IFACE_EXCHANGE_SERIALIZE | IFACE_MOD_CALLBACK,
        INTERFACE_INETCFG =
            FOURCC_COMPACT('i', 'c', 'f', 'g') | IFACE_EXCHANGE_SERIALIZE,
        INTERFACE_INETPING =
            FOURCC_COMPACT('i', 'p', 'n', 'g') | IFACE_EXCHANGE_SERIALIZE,
        INTERFACE_INETPING_CB =
            FOURCC_COMPACT('i', 'p', 'n', 'g') | IFACE_EXCHANGE_SERIALIZE | IFACE_MOD_CALLBACK,
        INTERFACE_DHCP =
            FOURCC_COMPACT('d', 'h', 'c', 'p') | IFACE_EXCHANGE_SERIALIZE,
        INTERFACE_DNSR =
            FOURCC_COMPACT('d', 'n', 's', 'r') | IFACE_EXCHANGE_SERIALIZE,
        INTERFACE_IPLINK =
            FOURCC_COMPACT('i', 'p', 'l', 'k') | IFACE_EXCHANGE_SERIALIZE,
        INTERFACE_IPLINK_CB =
            FOURCC_COMPACT('i', 'p', 'l', 'k') | IFACE_EXCHANGE_SERIALIZE | IFACE_MOD_CALLBACK,
        INTERFACE_TCP =
            FOURCC_COMPACT('t', 'c', 'p', ' ') | IFACE_EXCHANGE_SERIALIZE,
        INTERFACE_TCP_CB =
            FOURCC_COMPACT('t', 'c', 'p', ' ') | IFACE_EXCHANGE_SERIALIZE | IFACE_MOD_CALLBACK,
        INTERFACE_UDP =
            FOURCC_COMPACT('u', 'd', 'p', ' ') | IFACE_EXCHANGE_SERIALIZE,
        INTERFACE_UDP_CB =
            FOURCC_COMPACT('u', 'd', 'p', ' ') | IFACE_EXCHANGE_SERIALIZE | IFACE_MOD_CALLBACK,
        INTERFACE_CLIPBOARD =
            FOURCC_COMPACT('c', 'l', 'i', 'p') | IFACE_EXCHANGE_SERIALIZE,
        INTERFACE_CHAR_CB =
            FOURCC_COMPACT('b', 'l', 'd', 'v') | IFACE_EXCHANGE_PARALLEL | IFACE_MOD_CALLBACK,
        INTERFACE_AUDIO_PCM_CB =
            FOURCC_COMPACT('a', 'p', 'c', 'm') | IFACE_EXCHANGE_PARALLEL | IFACE_MOD_CALLBACK,
        INTERFACE_NIC_CB =
            FOURCC_COMPACT('n', 'i', 'c', ' ') | IFACE_EXCHANGE_SERIALIZE | IFACE_MOD_CALLBACK,
        INTERFACE_USBVIRT_CB =
            FOURCC_COMPACT('u', 's', 'b', 'v') | IFACE_EXCHANGE_PARALLEL | IFACE_MOD_CALLBACK,
        INTERFACE_ADB_CB =
            FOURCC_COMPACT('a', 'd', 'b', ' ') | IFACE_EXCHANGE_SERIALIZE | IFACE_MOD_CALLBACK,
        INTERFACE_MOUSE_CB =
            FOURCC_COMPACT('m', 'o', 'u', 's') | IFACE_EXCHANGE_SERIALIZE | IFACE_MOD_CALLBACK,
        INTERFACE_KBD_CB =
            FOURCC_COMPACT('k', 'b', 'd', ' ') | IFACE_EXCHANGE_SERIALIZE | IFACE_MOD_CALLBACK,
        INTERFACE_VOL =
            FOURCC_COMPACT('v', 'o', 'l', ' ') | IFACE_EXCHANGE_SERIALIZE,
        INTERFACE_VBD =
            FOURCC_COMPACT('v', 'b', 'd', ' ') | IFACE_EXCHANGE_SERIALIZE,
        INTERFACE_IPC_TEST =
            FOURCC_COMPACT('i', 'p', 'c', 't') | IFACE_EXCHANGE_SERIALIZE,
        INTERFACE_PCI =
            FOURCC_COMPACT('p', 'c', 'i', ' ') | IFACE_EXCHANGE_SERIALIZE,
        INTERFACE_DDEV =
            FOURCC_COMPACT('d', 'd', 'e', 'v') | IFACE_EXCHANGE_SERIALIZE,
        INTERFACE_DISPCFG =
            FOURCC_COMPACT('d', 'c', 'f', 'g') | IFACE_EXCHANGE_SERIALIZE,
        INTERFACE_DISPCFG_CB =
            FOURCC_COMPACT('d', 'c', 'f', 'g') | IFACE_EXCHANGE_SERIALIZE | IFACE_MOD_CALLBACK,
        INTERFACE_DISPLAY =
            FOURCC_COMPACT('d', 's', 'p', 'l') | IFACE_EXCHANGE_SERIALIZE,
        INTERFACE_DISPLAY_CB =
            FOURCC_COMPACT('d', 's', 'p', 'l') | IFACE_EXCHANGE_SERIALIZE | IFACE_MOD_CALLBACK,
        INTERFACE_GC =
            FOURCC_COMPACT('g', 'f', 'x', 'c') | IFACE_EXCHANGE_SERIALIZE,
        INTERFACE_WNDMGT =
            FOURCC_COMPACT('w', 'm', 'g', 't') | IFACE_EXCHANGE_SERIALIZE,
        INTERFACE_WNDMGT_CB =
            FOURCC_COMPACT('w', 'm', 'g', 't') | IFACE_EXCHANGE_SERIALIZE | IFACE_MOD_CALLBACK,
        INTERFACE_TBARCFG_NOTIFY =
            FOURCC_COMPACT('t', 'b', 'c', 'f') | IFACE_EXCHANGE_SERIALIZE,
        INTERFACE_SYSTEM =
            FOURCC_COMPACT('s', 's', 't', 'm') | IFACE_EXCHANGE_SERIALIZE,
        INTERFACE_SYSTEM_CB =
            FOURCC_COMPACT('s', 's', 't', 'm') | IFACE_EXCHANGE_SERIALIZE | IFACE_MOD_CALLBACK
} iface_t;
#endif
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