projects / linux.git / blame
| Commit | Line | Data |
|---|---|---|
| 1da177e4 LT |
1 | /* -*- linux-c -*- ------------------------------------------------------- * |
| 2 | * | |
| 3 | * linux/include/linux/auto_fs.h | |
| 4 | * | |
| 5 | * Copyright 1997 Transmeta Corporation - All Rights Reserved | |
| 6 | * | |
| 7 | * This file is part of the Linux kernel and is made available under | |
| 8 | * the terms of the GNU General Public License, version 2, or at your | |
| 9 | * option, any later version, incorporated herein by reference. | |
| 10 | * | |
| 11 | * ----------------------------------------------------------------------- */ | |
| 12 | ||
| 13 | ||
| 14 | #ifndef _LINUX_AUTO_FS_H | |
| 15 | #define _LINUX_AUTO_FS_H | |
| 16 | ||
| 17 | #ifdef __KERNEL__ | |
| 18 | #include <linux/fs.h> | |
| 19 | #include <linux/limits.h> | |
| 20 | #include <asm/types.h> | |
| 21 | #endif /* __KERNEL__ */ | |
| 22 | ||
| 23 | #include <linux/ioctl.h> | |
| 24 | ||
| 25 | /* This file describes autofs v3 */ | |
| 26 | #define AUTOFS_PROTO_VERSION 3 | |
| 27 | ||
| 28 | /* Range of protocol versions defined */ | |
| 29 | #define AUTOFS_MAX_PROTO_VERSION AUTOFS_PROTO_VERSION | |
| 30 | #define AUTOFS_MIN_PROTO_VERSION AUTOFS_PROTO_VERSION | |
| 31 | ||
| 32 | /* | |
| 33 | * Architectures where both 32- and 64-bit binaries can be executed | |
| 34 | * on 64-bit kernels need this. This keeps the structure format | |
| 35 | * uniform, and makes sure the wait_queue_token isn't too big to be | |
| 36 | * passed back down to the kernel. | |
| 37 | * | |
| 38 | * This assumes that on these architectures: | |
| 39 | * mode 32 bit 64 bit | |
| 40 | * ------------------------- | |
| 41 | * int 32 bit 32 bit | |
| 42 | * long 32 bit 64 bit | |
| 43 | * | |
| 44 | * If so, 32-bit user-space code should be backwards compatible. | |
| 45 | */ | |
| 46 | ||
| 47 | #if defined(__sparc__) || defined(__mips__) || defined(__x86_64__) \ | |
| 48 | || defined(__powerpc__) || defined(__s390__) | |
| 49 | typedef unsigned int autofs_wqt_t; | |
| 50 | #else | |
| 51 | typedef unsigned long autofs_wqt_t; | |
| 52 | #endif | |
| 53 | ||
| 54 | /* Packet types */ | |
| 55 | #define autofs_ptype_missing 0 /* Missing entry (mount request) */ | |
| 56 | #define autofs_ptype_expire 1 /* Expire entry (umount request) */ | |
| 57 | ||
| 58 | struct autofs_packet_hdr { | |
| 59 | int proto_version; /* Protocol version */ | |
| 60 | int type; /* Type of packet */ | |
| 61 | }; | |
| 62 | ||
| 63 | struct autofs_packet_missing { | |
| 64 | struct autofs_packet_hdr hdr; | |
| 65 | autofs_wqt_t wait_queue_token; | |
| 66 | int len; | |
| 67 | char name[NAME_MAX+1]; | |
| 68 | }; | |
| 69 | ||
| 70 | /* v3 expire (via ioctl) */ | |
| 71 | struct autofs_packet_expire { | |
| 72 | struct autofs_packet_hdr hdr; | |
| 73 | int len; | |
| 74 | char name[NAME_MAX+1]; | |
| 75 | }; | |
| 76 | ||
| 77 | #define AUTOFS_IOC_READY _IO(0x93,0x60) | |
| 78 | #define AUTOFS_IOC_FAIL _IO(0x93,0x61) | |
| 79 | #define AUTOFS_IOC_CATATONIC _IO(0x93,0x62) | |
| 80 | #define AUTOFS_IOC_PROTOVER _IOR(0x93,0x63,int) | |
| 81 | #define AUTOFS_IOC_SETTIMEOUT _IOWR(0x93,0x64,unsigned long) | |
| 82 | #define AUTOFS_IOC_EXPIRE _IOR(0x93,0x65,struct autofs_packet_expire) | |
| 83 | ||
| 84 | #endif /* _LINUX_AUTO_FS_H */ |