Annotation of src/sys/sys/fstypes.h, Revision 1.23.2.1
1.23.2.1! wrstuden 1: /* $NetBSD: fstypes.h,v 1.23 2008/05/06 18:43:45 ad Exp $ */
1.1 christos 2:
3: /*
4: * Copyright (c) 1989, 1991, 1993
5: * The Regents of the University of California. All rights reserved.
6: *
7: * Redistribution and use in source and binary forms, with or without
8: * modification, are permitted provided that the following conditions
9: * are met:
10: * 1. Redistributions of source code must retain the above copyright
11: * notice, this list of conditions and the following disclaimer.
12: * 2. Redistributions in binary form must reproduce the above copyright
13: * notice, this list of conditions and the following disclaimer in the
14: * documentation and/or other materials provided with the distribution.
15: * 3. Neither the name of the University nor the names of its contributors
16: * may be used to endorse or promote products derived from this software
17: * without specific prior written permission.
18: *
19: * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
20: * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
21: * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
22: * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
23: * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
24: * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
25: * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
26: * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
27: * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
28: * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
29: * SUCH DAMAGE.
30: *
31: * @(#)mount.h 8.21 (Berkeley) 5/20/95
32: */
33:
34: #ifndef _SYS_FSTYPES_H_
1.23.2.1! wrstuden 35: #define _SYS_FSTYPES_H_
1.1 christos 36:
37: typedef struct { int32_t __fsid_val[2]; } fsid_t; /* file system id type */
38:
1.13 martin 39: #if defined(_KERNEL)
1.1 christos 40: /*
41: * File identifier.
42: * These are unique per filesystem on a single machine.
43: */
44: struct fid {
45: unsigned short fid_len; /* length of data in bytes */
1.20 pooka 46: unsigned short fid_reserved; /* compat: historic align */
1.23.2.1! wrstuden 47: char fid_data[0]; /* data (variable length) */
1.1 christos 48: };
49:
50: /*
51: * Generic file handle
52: */
53: struct fhandle {
54: fsid_t fh_fsid; /* File system id of mount point */
55: struct fid fh_fid; /* File sys specific id */
56: };
57: typedef struct fhandle fhandle_t;
58:
1.12 yamt 59: /*
60: * FHANDLE_SIZE_MAX: arbitrary value to prevent unreasonable allocation.
61: *
62: * FHANDLE_SIZE_MIN: chosen for compatibility. smaller handles are zero-padded.
63: */
64:
1.14 yamt 65: #define FHANDLE_SIZE_COMPAT 28
1.12 yamt 66: #define FHANDLE_SIZE_MAX 1024
1.14 yamt 67: #define FHANDLE_SIZE_MIN FHANDLE_SIZE_COMPAT
1.12 yamt 68:
1.10 yamt 69: #define FHANDLE_FSID(fh) (&(fh)->fh_fsid)
70: #define FHANDLE_FILEID(fh) (&(fh)->fh_fid)
1.12 yamt 71: #define FHANDLE_SIZE_FROM_FILEID_SIZE(fidsize) \
72: MAX(FHANDLE_SIZE_MIN, (offsetof(fhandle_t, fh_fid) + (fidsize)))
73: #define FHANDLE_SIZE(fh) \
74: FHANDLE_SIZE_FROM_FILEID_SIZE(FHANDLE_FILEID(fh)->fid_len)
1.10 yamt 75: #endif /* defined(_KERNEL) */
76:
1.1 christos 77: /*
78: * Mount flags. XXX BEWARE: these are not in numerical order!
79: *
80: * Unmount uses MNT_FORCE flag.
81: *
82: * Note that all mount flags are listed here. if you need to add one, take
83: * one of the __MNT_UNUSED flags.
84: */
85:
1.8 chs 86: #define __MNT_UNUSED1 0x00020000
87: #define __MNT_UNUSED2 0x00200000
88: #define __MNT_UNUSED3 0x00800000
89: #define __MNT_UNUSED4 0x01000000
1.1 christos 90:
91: #define MNT_RDONLY 0x00000001 /* read only filesystem */
92: #define MNT_SYNCHRONOUS 0x00000002 /* file system written synchronously */
93: #define MNT_NOEXEC 0x00000004 /* can't exec from filesystem */
94: #define MNT_NOSUID 0x00000008 /* don't honor setuid bits on fs */
95: #define MNT_NODEV 0x00000010 /* don't interpret special files */
96: #define MNT_UNION 0x00000020 /* union with underlying filesystem */
97: #define MNT_ASYNC 0x00000040 /* file system written asynchronously */
98: #define MNT_NOCOREDUMP 0x00008000 /* don't write core dumps to this FS */
1.23.2.1! wrstuden 99: #define MNT_IGNORE 0x00100000 /* don't show entry in df */
! 100: #define MNT_LOG 0x02000000 /* Use logging */
! 101: #define MNT_NOATIME 0x04000000 /* Never update access times in fs */
! 102: #define MNT_SYMPERM 0x20000000 /* recognize symlink permission */
! 103: #define MNT_NODEVMTIME 0x40000000 /* Never update mod times for devs */
! 104: #define MNT_SOFTDEP 0x80000000 /* Use soft dependencies */
1.1 christos 105:
1.23.2.1! wrstuden 106: #define __MNT_BASIC_FLAGS \
1.1 christos 107: { MNT_RDONLY, 0, "read-only" }, \
108: { MNT_SYNCHRONOUS, 0, "synchronous" }, \
109: { MNT_NOEXEC, 0, "noexec" }, \
110: { MNT_NOSUID, 0, "nosuid" }, \
111: { MNT_NODEV, 0, "nodev" }, \
112: { MNT_UNION, 0, "union" }, \
113: { MNT_ASYNC, 0, "asynchronous" }, \
114: { MNT_NOCOREDUMP, 0, "nocoredump" }, \
115: { MNT_IGNORE, 0, "hidden" }, \
116: { MNT_NOATIME, 0, "noatime" }, \
117: { MNT_SYMPERM, 0, "symperm" }, \
118: { MNT_NODEVMTIME, 0, "nodevmtime" }, \
1.23.2.1! wrstuden 119: { MNT_SOFTDEP, 0, "soft dependencies" }, \
! 120: { MNT_LOG, 0, "log" },
1.1 christos 121:
122: /*
123: * exported mount flags.
124: */
125: #define MNT_EXRDONLY 0x00000080 /* exported read only */
126: #define MNT_EXPORTED 0x00000100 /* file system is exported */
127: #define MNT_DEFEXPORTED 0x00000200 /* exported to the world */
128: #define MNT_EXPORTANON 0x00000400 /* use anon uid mapping for everyone */
129: #define MNT_EXKERB 0x00000800 /* exported with Kerberos uid mapping */
1.23.2.1! wrstuden 130: #define MNT_EXNORESPORT 0x08000000 /* don't enforce reserved ports (NFS) */
! 131: #define MNT_EXPUBLIC 0x10000000 /* public export (WebNFS) */
1.1 christos 132:
1.23.2.1! wrstuden 133: #define __MNT_EXPORTED_FLAGS \
1.1 christos 134: { MNT_EXRDONLY, 1, "exported read-only" }, \
135: { MNT_EXPORTED, 0, "NFS exported" }, \
136: { MNT_DEFEXPORTED, 1, "exported to the world" }, \
137: { MNT_EXPORTANON, 1, "anon uid mapping" }, \
138: { MNT_EXKERB, 1, "kerberos uid mapping" }, \
139: { MNT_EXNORESPORT, 0, "non-reserved ports" }, \
140: { MNT_EXPUBLIC, 0, "WebNFS exports" },
141:
142: /*
143: * Flags set by internal operations.
144: */
145: #define MNT_LOCAL 0x00001000 /* filesystem is stored locally */
146: #define MNT_QUOTA 0x00002000 /* quotas are enabled on filesystem */
147: #define MNT_ROOTFS 0x00004000 /* identifies the root filesystem */
148:
1.23.2.1! wrstuden 149: #define __MNT_INTERNAL_FLAGS \
1.1 christos 150: { MNT_LOCAL, 0, "local" }, \
151: { MNT_QUOTA, 0, "with quotas" }, \
152: { MNT_ROOTFS, 1, "root file system" },
153:
154: /*
155: * Mask of flags that are visible to statvfs()
156: */
1.5 christos 157: #define MNT_VISFLAGMASK ( \
158: MNT_RDONLY | \
159: MNT_SYNCHRONOUS | \
160: MNT_NOEXEC | \
161: MNT_NOSUID | \
162: MNT_NODEV | \
163: MNT_UNION | \
164: MNT_ASYNC | \
165: MNT_NOCOREDUMP | \
166: MNT_IGNORE | \
167: MNT_NOATIME | \
168: MNT_SYMPERM | \
169: MNT_NODEVMTIME | \
170: MNT_SOFTDEP | \
171: MNT_EXRDONLY | \
172: MNT_EXPORTED | \
173: MNT_DEFEXPORTED | \
174: MNT_EXPORTANON | \
175: MNT_EXKERB | \
176: MNT_EXNORESPORT | \
177: MNT_EXPUBLIC | \
178: MNT_LOCAL | \
179: MNT_QUOTA | \
1.23.2.1! wrstuden 180: MNT_ROOTFS | \
! 181: MNT_LOG)
1.1 christos 182:
183: /*
184: * External filesystem control flags.
185: */
186: #define MNT_UPDATE 0x00010000 /* not a real mount, just an update */
187: #define MNT_RELOAD 0x00040000 /* reload filesystem data */
188: #define MNT_FORCE 0x00080000 /* force unmount or readonly change */
189: #define MNT_GETARGS 0x00400000 /* retrieve file system specific args */
190:
1.17 yamt 191: #define MNT_OP_FLAGS (MNT_UPDATE|MNT_RELOAD|MNT_FORCE|MNT_GETARGS)
192:
1.23.2.1! wrstuden 193: #define __MNT_EXTERNAL_FLAGS \
1.1 christos 194: { MNT_UPDATE, 1, "being updated" }, \
195: { MNT_RELOAD, 1, "reload filesystem data" }, \
196: { MNT_FORCE, 1, "force unmount or readonly change" }, \
197: { MNT_GETARGS, 1, "retrieve mount arguments" },
198:
199: /*
200: * Internal filesystem control flags.
201: * These are set in struct mount mnt_iflag.
202: *
203: * IMNT_UNMOUNT locks the mount entry so that name lookup cannot proceed
204: * past the mount point. This keeps the subtree stable during mounts
205: * and unmounts.
206: */
207: #define IMNT_GONE 0x00000001 /* filesystem is gone.. */
208: #define IMNT_UNMOUNT 0x00000002 /* unmount in progress */
209: #define IMNT_WANTRDWR 0x00000004 /* upgrade to read/write requested */
1.3 mycroft 210: #define IMNT_DTYPE 0x00000040 /* returns d_type fields */
1.18 hannken 211: #define IMNT_HAS_TRANS 0x00000080 /* supports transactions */
1.21 ad 212: #define IMNT_MPSAFE 0x00000100 /* file system code MP safe */
1.1 christos 213:
1.23.2.1! wrstuden 214: #define __MNT_FLAGS \
1.1 christos 215: __MNT_BASIC_FLAGS \
216: __MNT_EXPORTED_FLAGS \
217: __MNT_INTERNAL_FLAGS \
218: __MNT_EXTERNAL_FLAGS
219:
1.23.2.1! wrstuden 220: #define __MNT_FLAG_BITS \
1.1 christos 221: "\20" \
222: "\40MNT_SOFTDEP" \
223: "\37MNT_NODEVMTIME" \
224: "\36MNT_SYMPERM" \
225: "\35MNT_EXPUBLIC" \
226: "\34MNT_EXNORESPORT" \
227: "\33MNT_NOATIME" \
1.23.2.1! wrstuden 228: "\32MNT_LOG" \
1.8 chs 229: "\31MNT_UNUSED" \
230: "\30MNT_UNUSED" \
1.1 christos 231: "\27MNT_GETARGS" \
1.8 chs 232: "\26MNT_UNUSED" \
1.1 christos 233: "\25MNT_IGNORE" \
234: "\24MNT_FORCE" \
235: "\23MNT_RELOAD" \
1.8 chs 236: "\22MNT_UNUSED" \
1.1 christos 237: "\21MNT_UPDATE" \
238: "\20MNT_NOCOREDUMP" \
239: "\17MNT_ROOTFS" \
240: "\16MNT_QUOTA" \
241: "\15MNT_LOCAL" \
242: "\14MNT_EXKERB" \
243: "\13MNT_EXPORTANON" \
244: "\12MNT_DEFEXPORTED" \
245: "\11MNT_EXPORTED" \
246: "\10MNT_EXRDONLY" \
247: "\07MNT_ASYNC" \
248: "\06MNT_UNION" \
249: "\05MNT_NODEV" \
250: "\04MNT_NOSUID" \
251: "\03MNT_NOEXEC" \
252: "\02MNT_SYNCHRONOUS" \
253: "\01MNT_RDONLY"
254:
1.23.2.1! wrstuden 255: #define __IMNT_FLAG_BITS \
1.1 christos 256: "\20" \
1.21 ad 257: "\20IMNT_MPSAFE" \
1.18 hannken 258: "\10IMNT_HAS_TRANS" \
1.3 mycroft 259: "\07IMNT_DTYPE" \
1.1 christos 260: "\03IMNT_WANTRDWR" \
261: "\02IMNT_UNMOUNT" \
262: "\01IMNT_GONE"
263:
264: /*
265: * Flags for various system call interfaces.
266: *
267: * waitfor flags to vfs_sync() and getvfsstat()
268: */
1.23.2.1! wrstuden 269: #define MNT_WAIT 1 /* synchronously wait for I/O to complete */
! 270: #define MNT_NOWAIT 2 /* start all I/O, but do not wait for it */
! 271: #define MNT_LAZY 3 /* push data not written by filesystem syncer */
1.1 christos 272: #endif /* _SYS_FSTYPES_H_ */
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