| /* -*- c -*- |
| * linux/include/linux/auto_fs4.h |
| * |
| * Copyright 1999-2000 Jeremy Fitzhardinge <jeremy@goop.org> |
| * |
| * This file is part of the Linux kernel and is made available under |
| * the terms of the GNU General Public License, version 2, or at your |
| * option, any later version, incorporated herein by reference. |
| */ |
| |
| #ifndef _LINUX_AUTO_FS4_H |
| #define _LINUX_AUTO_FS4_H |
| |
| /* Include common v3 definitions */ |
| #include <linux/types.h> |
| #include <linux/auto_fs.h> |
| |
| /* autofs v4 definitions */ |
| #undef AUTOFS_PROTO_VERSION |
| #undef AUTOFS_MIN_PROTO_VERSION |
| #undef AUTOFS_MAX_PROTO_VERSION |
| |
| #define AUTOFS_PROTO_VERSION 5 |
| #define AUTOFS_MIN_PROTO_VERSION 3 |
| #define AUTOFS_MAX_PROTO_VERSION 5 |
| |
| #define AUTOFS_PROTO_SUBVERSION 2 |
| |
| /* Mask for expire behaviour */ |
| #define AUTOFS_EXP_IMMEDIATE 1 |
| #define AUTOFS_EXP_LEAVES 2 |
| |
| #define AUTOFS_TYPE_ANY 0U |
| #define AUTOFS_TYPE_INDIRECT 1U |
| #define AUTOFS_TYPE_DIRECT 2U |
| #define AUTOFS_TYPE_OFFSET 4U |
| |
| static __inline__ void set_autofs_type_indirect(unsigned int *type) |
| { |
| *type = AUTOFS_TYPE_INDIRECT; |
| return; |
| } |
| |
| static __inline__ unsigned int autofs_type_indirect(unsigned int type) |
| { |
| return (type == AUTOFS_TYPE_INDIRECT); |
| } |
| |
| static __inline__ void set_autofs_type_direct(unsigned int *type) |
| { |
| *type = AUTOFS_TYPE_DIRECT; |
| return; |
| } |
| |
| static __inline__ unsigned int autofs_type_direct(unsigned int type) |
| { |
| return (type == AUTOFS_TYPE_DIRECT); |
| } |
| |
| static __inline__ void set_autofs_type_offset(unsigned int *type) |
| { |
| *type = AUTOFS_TYPE_OFFSET; |
| return; |
| } |
| |
| static __inline__ unsigned int autofs_type_offset(unsigned int type) |
| { |
| return (type == AUTOFS_TYPE_OFFSET); |
| } |
| |
| static __inline__ unsigned int autofs_type_trigger(unsigned int type) |
| { |
| return (type == AUTOFS_TYPE_DIRECT || type == AUTOFS_TYPE_OFFSET); |
| } |
| |
| /* |
| * This isn't really a type as we use it to say "no type set" to |
| * indicate we want to search for "any" mount in the |
| * autofs_dev_ioctl_ismountpoint() device ioctl function. |
| */ |
| static __inline__ void set_autofs_type_any(unsigned int *type) |
| { |
| *type = AUTOFS_TYPE_ANY; |
| return; |
| } |
| |
| static __inline__ unsigned int autofs_type_any(unsigned int type) |
| { |
| return (type == AUTOFS_TYPE_ANY); |
| } |
| |
| /* Daemon notification packet types */ |
| enum autofs_notify { |
| NFY_NONE, |
| NFY_MOUNT, |
| NFY_EXPIRE |
| }; |
| |
| /* Kernel protocol version 4 packet types */ |
| |
| /* Expire entry (umount request) */ |
| #define autofs_ptype_expire_multi 2 |
| |
| /* Kernel protocol version 5 packet types */ |
| |
| /* Indirect mount missing and expire requests. */ |
| #define autofs_ptype_missing_indirect 3 |
| #define autofs_ptype_expire_indirect 4 |
| |
| /* Direct mount missing and expire requests */ |
| #define autofs_ptype_missing_direct 5 |
| #define autofs_ptype_expire_direct 6 |
| |
| /* v4 multi expire (via pipe) */ |
| struct autofs_packet_expire_multi { |
| struct autofs_packet_hdr hdr; |
| autofs_wqt_t wait_queue_token; |
| int len; |
| char name[NAME_MAX+1]; |
| }; |
| |
| union autofs_packet_union { |
| struct autofs_packet_hdr hdr; |
| struct autofs_packet_missing missing; |
| struct autofs_packet_expire expire; |
| struct autofs_packet_expire_multi expire_multi; |
| }; |
| |
| /* autofs v5 common packet struct */ |
| struct autofs_v5_packet { |
| struct autofs_packet_hdr hdr; |
| autofs_wqt_t wait_queue_token; |
| __u32 dev; |
| __u64 ino; |
| __u32 uid; |
| __u32 gid; |
| __u32 pid; |
| __u32 tgid; |
| __u32 len; |
| char name[NAME_MAX+1]; |
| }; |
| |
| typedef struct autofs_v5_packet autofs_packet_missing_indirect_t; |
| typedef struct autofs_v5_packet autofs_packet_expire_indirect_t; |
| typedef struct autofs_v5_packet autofs_packet_missing_direct_t; |
| typedef struct autofs_v5_packet autofs_packet_expire_direct_t; |
| |
| union autofs_v5_packet_union { |
| struct autofs_packet_hdr hdr; |
| struct autofs_v5_packet v5_packet; |
| autofs_packet_missing_indirect_t missing_indirect; |
| autofs_packet_expire_indirect_t expire_indirect; |
| autofs_packet_missing_direct_t missing_direct; |
| autofs_packet_expire_direct_t expire_direct; |
| }; |
| |
| #define AUTOFS_IOC_EXPIRE_MULTI _IOW(0x93,0x66,int) |
| #define AUTOFS_IOC_EXPIRE_INDIRECT AUTOFS_IOC_EXPIRE_MULTI |
| #define AUTOFS_IOC_EXPIRE_DIRECT AUTOFS_IOC_EXPIRE_MULTI |
| #define AUTOFS_IOC_PROTOSUBVER _IOR(0x93,0x67,int) |
| #define AUTOFS_IOC_ASKUMOUNT _IOR(0x93,0x70,int) |
| |
| |
| #endif /* _LINUX_AUTO_FS4_H */ |