1 /* -*- c -*- 2 * linux/include/linux/auto_fs4.h 3 * 4 * Copyright 1999-2000 Jeremy Fitzhardinge <jeremy@goop.org> 5 * 6 * This file is part of the Linux kernel and is made available under 7 * the terms of the GNU General Public License, version 2, or at your 8 * option, any later version, incorporated herein by reference. 9 */ 10 11 #ifndef _LINUX_AUTO_FS4_H 12 #define _LINUX_AUTO_FS4_H 13 14 /* Include common v3 definitions */ 15 #include <linux/auto_fs.h> 16 17 /* autofs v4 definitions */ 18 #undef AUTOFS_PROTO_VERSION 19 #undef AUTOFS_MIN_PROTO_VERSION 20 #undef AUTOFS_MAX_PROTO_VERSION 21 22 #define AUTOFS_PROTO_VERSION 5 23 #define AUTOFS_MIN_PROTO_VERSION 3 24 #define AUTOFS_MAX_PROTO_VERSION 5 25 26 #define AUTOFS_PROTO_SUBVERSION 0 27 28 /* Mask for expire behaviour */ 29 #define AUTOFS_EXP_IMMEDIATE 1 30 #define AUTOFS_EXP_LEAVES 2 31 32 /* Daemon notification packet types */ 33 enum autofs_notify { 34 NFY_NONE, 35 NFY_MOUNT, 36 NFY_EXPIRE 37 }; 38 39 /* Kernel protocol version 4 packet types */ 40 41 /* Expire entry (umount request) */ 42 #define autofs_ptype_expire_multi 2 43 44 /* Kernel protocol version 5 packet types */ 45 46 /* Indirect mount missing and expire requests. */ 47 #define autofs_ptype_missing_indirect 3 48 #define autofs_ptype_expire_indirect 4 49 50 /* Direct mount missing and expire requests */ 51 #define autofs_ptype_missing_direct 5 52 #define autofs_ptype_expire_direct 6 53 54 /* v4 multi expire (via pipe) */ 55 struct autofs_packet_expire_multi { 56 struct autofs_packet_hdr hdr; 57 autofs_wqt_t wait_queue_token; 58 int len; 59 char name[NAME_MAX+1]; 60 }; 61 62 union autofs_packet_union { 63 struct autofs_packet_hdr hdr; 64 struct autofs_packet_missing missing; 65 struct autofs_packet_expire expire; 66 struct autofs_packet_expire_multi expire_multi; 67 }; 68 69 /* autofs v5 common packet struct */ 70 struct autofs_v5_packet { 71 struct autofs_packet_hdr hdr; 72 autofs_wqt_t wait_queue_token; 73 __u32 dev; 74 __u64 ino; 75 __u32 uid; 76 __u32 gid; 77 __u32 pid; 78 __u32 tgid; 79 __u32 len; 80 char name[NAME_MAX+1]; 81 }; 82 83 typedef struct autofs_v5_packet autofs_packet_missing_indirect_t; 84 typedef struct autofs_v5_packet autofs_packet_expire_indirect_t; 85 typedef struct autofs_v5_packet autofs_packet_missing_direct_t; 86 typedef struct autofs_v5_packet autofs_packet_expire_direct_t; 87 88 union autofs_v5_packet_union { 89 struct autofs_packet_hdr hdr; 90 struct autofs_v5_packet v5_packet; 91 autofs_packet_missing_indirect_t missing_indirect; 92 autofs_packet_expire_indirect_t expire_indirect; 93 autofs_packet_missing_direct_t missing_direct; 94 autofs_packet_expire_direct_t expire_direct; 95 }; 96 97 #define AUTOFS_IOC_EXPIRE_MULTI _IOW(0x93,0x66,int) 98 #define AUTOFS_IOC_EXPIRE_INDIRECT AUTOFS_IOC_EXPIRE_MULTI 99 #define AUTOFS_IOC_EXPIRE_DIRECT AUTOFS_IOC_EXPIRE_MULTI 100 #define AUTOFS_IOC_PROTOSUBVER _IOR(0x93,0x67,int) 101 #define AUTOFS_IOC_ASKREGHOST _IOR(0x93,0x68,int) 102 #define AUTOFS_IOC_TOGGLEREGHOST _IOR(0x93,0x69,int) 103 #define AUTOFS_IOC_ASKUMOUNT _IOR(0x93,0x70,int) 104 105 106 #endif /* _LINUX_AUTO_FS4_H */ 107