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| 1 | 13 | up20180614 | /* $NetBSD: puffs.h,v 1.126 2014/10/31 13:56:04 manu Exp $ */
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| 2 | |||
| 3 | /*
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| 4 | * Copyright (c) 2005, 2006, 2007 Antti Kantee. All Rights Reserved.
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| 5 | *
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| 6 | * Development of this software was supported by the
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| 7 | * Google Summer of Code program and the Ulla Tuominen Foundation.
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| 8 | * The Google SoC project was mentored by Bill Studenmund.
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| 9 | *
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| 10 | * Redistribution and use in source and binary forms, with or without
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| 11 | * modification, are permitted provided that the following conditions
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| 12 | * are met:
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| 13 | * 1. Redistributions of source code must retain the above copyright
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| 14 | * notice, this list of conditions and the following disclaimer.
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| 15 | * 2. Redistributions in binary form must reproduce the above copyright
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| 16 | * notice, this list of conditions and the following disclaimer in the
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| 17 | * documentation and/or other materials provided with the distribution.
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| 18 | *
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| 19 | * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS
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| 20 | * OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
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| 21 | * WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
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| 22 | * DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
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| 23 | * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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| 24 | * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
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| 25 | * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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| 26 | * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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| 27 | * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
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| 28 | * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
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| 29 | * SUCH DAMAGE.
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| 30 | */
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| 31 | |||
| 32 | #ifndef _PUFFS_H_
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| 33 | #define _PUFFS_H_
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| 34 | |||
| 35 | #include <sys/param.h> |
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| 36 | #include <sys/types.h> |
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| 37 | #include <sys/mount.h> |
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| 38 | #include <sys/namei.h> |
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| 39 | #include <sys/stat.h> |
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| 40 | #include <sys/statvfs.h> |
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| 41 | #include <sys/time.h> |
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| 42 | #include <sys/vnode.h> |
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| 43 | |||
| 44 | #include <fs/puffs/puffs_msgif.h> |
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| 45 | |||
| 46 | #include <mntopts.h> |
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| 47 | #include <stdbool.h> |
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| 48 | #include <string.h> |
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| 49 | |||
| 50 | /* forwards */
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| 51 | struct puffs_cc;
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| 52 | |||
| 53 | struct puffs_getreq;
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| 54 | struct puffs_cred;
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| 55 | struct puffs_newinfo;
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| 56 | |||
| 57 | /* paths */
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| 58 | struct puffs_pathobj {
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| 59 | void *po_path;
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| 60 | size_t po_len; |
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| 61 | uint32_t po_hash; |
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| 62 | }; |
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| 63 | |||
| 64 | /* for prefix rename */
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| 65 | struct puffs_pathinfo {
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| 66 | struct puffs_pathobj *pi_old;
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| 67 | struct puffs_pathobj *pi_new;
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| 68 | }; |
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| 69 | |||
| 70 | /* describes one segment cached in the kernel */
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| 71 | struct puffs_kcache {
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| 72 | off_t pkc_start; |
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| 73 | off_t pkc_end; |
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| 74 | |||
| 75 | LIST_ENTRY(puffs_kcache) pkc_entries; |
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| 76 | }; |
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| 77 | |||
| 78 | /* XXX: might disappear from here into a private header */
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| 79 | struct puffs_node {
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| 80 | off_t pn_size; |
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| 81 | int pn_flags;
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| 82 | int pn_nlookup;
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| 83 | struct vattr pn_va;
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| 84 | |||
| 85 | void *pn_data; /* private data */ |
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| 86 | |||
| 87 | struct puffs_pathobj pn_po; /* PUFFS_FLAG_BUILDPATH */ |
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| 88 | |||
| 89 | struct puffs_usermount *pn_mnt;
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| 90 | LIST_ENTRY(puffs_node) pn_entries; |
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| 91 | |||
| 92 | LIST_HEAD(,puffs_kcache)pn_cacheinfo; /* PUFFS_KFLAG_CACHE */
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| 93 | #if defined(__minix)
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| 94 | /* MINIX fields */
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| 95 | char pn_mountpoint; /* true if mounted on */ |
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| 96 | unsigned int pn_count; /* # times inode used */ |
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| 97 | #endif /* defined(__minix) */ |
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| 98 | }; |
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| 99 | #define PUFFS_NODE_REMOVED 0x01 /* not on entry list */ |
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| 100 | |||
| 101 | |||
| 102 | struct puffs_usermount;
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| 103 | |||
| 104 | /*
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| 105 | * megaXXX: these are values from inside _KERNEL
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| 106 | * need to work on the translation for ALL the necessary values.
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| 107 | */
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| 108 | #define PUFFS_VNOVAL (-1) |
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| 109 | |||
| 110 | #define PUFFS_IO_APPEND 0x020 |
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| 111 | #define PUFFS_IO_NDELAY 0x100 |
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| 112 | |||
| 113 | #define PUFFS_VEXEC 01 |
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| 114 | #define PUFFS_VWRITE 02 |
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| 115 | #define PUFFS_VREAD 04 |
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| 116 | |||
| 117 | #define PUFFS_FSYNC_DATAONLY 0x0002 |
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| 118 | #define PUFFS_FSYNC_CACHE 0x0100 |
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| 119 | |||
| 120 | /*
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| 121 | * xflags for setattr_ttl and write2
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| 122 | */
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| 123 | #define PUFFS_SETATTR_FAF 0x1 |
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| 124 | #define PUFFS_WRITE_FAF 0x1 |
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| 125 | |||
| 126 | #define PUFFS_EXTATTR_LIST_LENPREFIX 1 |
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| 127 | /*
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| 128 | * Magic constants
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| 129 | */
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| 130 | #define PUFFS_CC_STACKSHIFT_DEFAULT 18 |
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| 131 | |||
| 132 | struct puffs_cn {
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| 133 | struct puffs_kcn *pcn_pkcnp; /* kernel input */ |
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| 134 | struct puffs_cred *pcn_cred; /* cred used for lookup */ |
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| 135 | |||
| 136 | struct puffs_pathobj pcn_po_full; /* PUFFS_FLAG_BUILDPATH */ |
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| 137 | }; |
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| 138 | #define pcn_nameiop pcn_pkcnp->pkcn_nameiop
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| 139 | #define pcn_flags pcn_pkcnp->pkcn_flags
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| 140 | #define pcn_name pcn_pkcnp->pkcn_name
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| 141 | #define pcn_namelen pcn_pkcnp->pkcn_namelen
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| 142 | #define pcn_consume pcn_pkcnp->pkcn_consume
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| 143 | |||
| 144 | /*
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| 145 | * Puffs options to mount
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| 146 | */
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| 147 | /* kernel */
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| 148 | #define PUFFSMOPT_NAMECACHE { "namecache", 1, PUFFS_KFLAG_NOCACHE_NAME, 1 } |
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| 149 | #define PUFFSMOPT_PAGECACHE { "pagecache", 1, PUFFS_KFLAG_NOCACHE_PAGE, 1 } |
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| 150 | #define PUFFSMOPT_ATTRCACHE { "attrcache", 1, PUFFS_KFLAG_NOCACHE_ATTR, 1 } |
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| 151 | #define PUFFSMOPT_CACHE { "cache", 1, PUFFS_KFLAG_NOCACHE, 1 } |
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| 152 | #define PUFFSMOPT_ALLOPS { "allops", 0, PUFFS_KFLAG_ALLOPS, 1 } |
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| 153 | |||
| 154 | /* libpuffs */
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| 155 | #define PUFFSMOPT_DUMP { "dump", 0, PUFFS_FLAG_OPDUMP, 1 } |
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| 156 | |||
| 157 | #define PUFFSMOPT_STD \
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| 158 | PUFFSMOPT_NAMECACHE, \ |
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| 159 | PUFFSMOPT_PAGECACHE, \ |
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| 160 | PUFFSMOPT_ATTRCACHE, \ |
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| 161 | PUFFSMOPT_CACHE, \ |
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| 162 | PUFFSMOPT_ALLOPS, \ |
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| 163 | PUFFSMOPT_DUMP |
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| 164 | |||
| 165 | extern const struct mntopt puffsmopts[]; /* puffs.c */ |
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| 166 | |||
| 167 | /* callbacks for operations */
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| 168 | struct puffs_ops {
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| 169 | int (*puffs_fs_unmount)(struct puffs_usermount *, int); |
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| 170 | int (*puffs_fs_statvfs)(struct puffs_usermount *, struct statvfs *); |
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| 171 | int (*puffs_fs_sync)(struct puffs_usermount *, int, |
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| 172 | const struct puffs_cred *); |
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| 173 | int (*puffs_fs_fhtonode)(struct puffs_usermount *, void *, size_t, |
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| 174 | struct puffs_newinfo *);
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| 175 | int (*puffs_fs_nodetofh)(struct puffs_usermount *, puffs_cookie_t, |
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| 176 | void *, size_t *);
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| 177 | int (*puffs_fs_extattrctl)(struct puffs_usermount *, int, |
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| 178 | puffs_cookie_t, int, int, const char *); |
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| 179 | |||
| 180 | int (*puffs_node_lookup)(struct puffs_usermount *, |
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| 181 | puffs_cookie_t, struct puffs_newinfo *, const struct puffs_cn *); |
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| 182 | int (*puffs_node_create)(struct puffs_usermount *, |
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| 183 | puffs_cookie_t, struct puffs_newinfo *, const struct puffs_cn *, |
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| 184 | const struct vattr *); |
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| 185 | int (*puffs_node_mknod)(struct puffs_usermount *, |
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| 186 | puffs_cookie_t, struct puffs_newinfo *, const struct puffs_cn *, |
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| 187 | const struct vattr *); |
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| 188 | int (*puffs_node_open)(struct puffs_usermount *, |
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| 189 | puffs_cookie_t, int, const struct puffs_cred *); |
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| 190 | int (*puffs_node_close)(struct puffs_usermount *, |
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| 191 | puffs_cookie_t, int, const struct puffs_cred *); |
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| 192 | int (*puffs_node_access)(struct puffs_usermount *, |
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| 193 | puffs_cookie_t, int, const struct puffs_cred *); |
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| 194 | int (*puffs_node_getattr)(struct puffs_usermount *, |
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| 195 | puffs_cookie_t, struct vattr *, const struct puffs_cred *); |
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| 196 | int (*puffs_node_setattr)(struct puffs_usermount *, |
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| 197 | puffs_cookie_t, const struct vattr *, const struct puffs_cred *); |
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| 198 | int (*puffs_node_poll)(struct puffs_usermount *, puffs_cookie_t, int *); |
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| 199 | int (*puffs_node_mmap)(struct puffs_usermount *, |
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| 200 | puffs_cookie_t, vm_prot_t, const struct puffs_cred *); |
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| 201 | int (*puffs_node_fsync)(struct puffs_usermount *, |
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| 202 | puffs_cookie_t, const struct puffs_cred *, int, off_t, off_t); |
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| 203 | int (*puffs_node_seek)(struct puffs_usermount *, |
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| 204 | puffs_cookie_t, off_t, off_t, const struct puffs_cred *); |
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| 205 | int (*puffs_node_remove)(struct puffs_usermount *, |
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| 206 | puffs_cookie_t, puffs_cookie_t, const struct puffs_cn *); |
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| 207 | int (*puffs_node_link)(struct puffs_usermount *, |
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| 208 | puffs_cookie_t, puffs_cookie_t, const struct puffs_cn *); |
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| 209 | int (*puffs_node_rename)(struct puffs_usermount *, |
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| 210 | puffs_cookie_t, puffs_cookie_t, const struct puffs_cn *, |
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| 211 | puffs_cookie_t, puffs_cookie_t, const struct puffs_cn *); |
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| 212 | int (*puffs_node_mkdir)(struct puffs_usermount *, |
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| 213 | puffs_cookie_t, struct puffs_newinfo *, const struct puffs_cn *, |
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| 214 | const struct vattr *); |
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| 215 | int (*puffs_node_rmdir)(struct puffs_usermount *, |
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| 216 | puffs_cookie_t, puffs_cookie_t, const struct puffs_cn *); |
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| 217 | int (*puffs_node_symlink)(struct puffs_usermount *, |
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| 218 | puffs_cookie_t, struct puffs_newinfo *, const struct puffs_cn *, |
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| 219 | const struct vattr *, |
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| 220 | const char *); |
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| 221 | int (*puffs_node_readdir)(struct puffs_usermount *, |
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| 222 | puffs_cookie_t, struct dirent *, off_t *, size_t *,
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| 223 | const struct puffs_cred *, int *, off_t *, size_t *); |
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| 224 | int (*puffs_node_readlink)(struct puffs_usermount *, |
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| 225 | puffs_cookie_t, const struct puffs_cred *, char *, size_t *); |
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| 226 | int (*puffs_node_reclaim)(struct puffs_usermount *, puffs_cookie_t); |
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| 227 | int (*puffs_node_inactive)(struct puffs_usermount *, puffs_cookie_t); |
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| 228 | int (*puffs_node_print)(struct puffs_usermount *, puffs_cookie_t); |
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| 229 | int (*puffs_node_pathconf)(struct puffs_usermount *, |
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| 230 | puffs_cookie_t, int, register_t *);
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| 231 | int (*puffs_node_advlock)(struct puffs_usermount *, |
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| 232 | puffs_cookie_t, void *, int, struct flock *, int); |
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| 233 | int (*puffs_node_read)(struct puffs_usermount *, puffs_cookie_t, |
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| 234 | uint8_t *, off_t, size_t *, const struct puffs_cred *, int); |
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| 235 | int (*puffs_node_write)(struct puffs_usermount *, puffs_cookie_t, |
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| 236 | uint8_t *, off_t, size_t *, const struct puffs_cred *, int); |
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| 237 | int (*puffs_node_abortop)(struct puffs_usermount *, puffs_cookie_t, |
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| 238 | const struct puffs_cn *); |
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| 239 | int (*puffs_node_getextattr)(struct puffs_usermount *, puffs_cookie_t, |
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| 240 | int, const char *, size_t *, uint8_t *, size_t *, |
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| 241 | const struct puffs_cred *); |
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| 242 | int (*puffs_node_setextattr)(struct puffs_usermount *, puffs_cookie_t, |
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| 243 | int, const char *, uint8_t *, size_t *, const struct puffs_cred *); |
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| 244 | int (*puffs_node_listextattr)(struct puffs_usermount *, puffs_cookie_t, |
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| 245 | int, size_t *, uint8_t *, size_t *, int, const struct puffs_cred *); |
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| 246 | int (*puffs_node_deleteextattr)(struct puffs_usermount *, |
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| 247 | puffs_cookie_t, int, const char *, const struct puffs_cred *); |
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| 248 | int (*puffs_node_getattr_ttl)(struct puffs_usermount *, |
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| 249 | puffs_cookie_t, struct vattr *, const struct puffs_cred *, |
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| 250 | struct timespec *);
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| 251 | int (*puffs_node_setattr_ttl)(struct puffs_usermount *, |
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| 252 | puffs_cookie_t, struct vattr *, const struct puffs_cred *, |
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| 253 | struct timespec *, int); |
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| 254 | int (*puffs_node_write2)(struct puffs_usermount *, puffs_cookie_t, |
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| 255 | uint8_t *, off_t, size_t *, const struct puffs_cred *, int, int); |
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| 256 | int (*puffs_node_reclaim2)(struct puffs_usermount *, |
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| 257 | puffs_cookie_t, int);
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| 258 | int (*puffs_node_open2)(struct puffs_usermount *, |
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| 259 | puffs_cookie_t, int, const struct puffs_cred *, int *); |
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| 260 | int (*puffs_node_fallocate)(struct puffs_usermount *, |
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| 261 | puffs_cookie_t, off_t, off_t); |
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| 262 | int (*puffs_node_fdiscard)(struct puffs_usermount *, |
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| 263 | puffs_cookie_t, off_t, off_t); |
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| 264 | |||
| 265 | void *puffs_ops_spare[26]; |
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| 266 | }; |
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| 267 | |||
| 268 | typedef int (*pu_pathbuild_fn)(struct puffs_usermount *, |
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| 269 | const struct puffs_pathobj *, |
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| 270 | const struct puffs_pathobj *, size_t, |
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| 271 | struct puffs_pathobj *);
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| 272 | typedef int (*pu_pathtransform_fn)(struct puffs_usermount *, |
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| 273 | const struct puffs_pathobj *, |
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| 274 | const struct puffs_cn *, |
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| 275 | struct puffs_pathobj *);
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| 276 | typedef int (*pu_pathcmp_fn)(struct puffs_usermount *, struct puffs_pathobj *, |
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| 277 | struct puffs_pathobj *, size_t, int); |
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| 278 | typedef void (*pu_pathfree_fn)(struct puffs_usermount *, |
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| 279 | struct puffs_pathobj *);
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| 280 | typedef int (*pu_namemod_fn)(struct puffs_usermount *, |
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| 281 | struct puffs_pathobj *, struct puffs_cn *); |
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| 282 | |||
| 283 | typedef void (*pu_errnotify_fn)(struct puffs_usermount *, |
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| 284 | uint8_t, int, const char *, puffs_cookie_t); |
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| 285 | |||
| 286 | typedef void (*pu_prepost_fn)(struct puffs_usermount *); |
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| 287 | |||
| 288 | typedef struct puffs_node *(*pu_cmap_fn)(struct puffs_usermount *, |
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| 289 | puffs_cookie_t); |
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| 290 | |||
| 291 | enum {
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| 292 | PUFFS_STATE_BEFOREMOUNT, PUFFS_STATE_RUNNING, |
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| 293 | PUFFS_STATE_UNMOUNTING, PUFFS_STATE_UNMOUNTED |
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| 294 | }; |
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| 295 | |||
| 296 | #define PUFFS_FLAG_BUILDPATH 0x80000000 /* node paths in pnode */ |
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| 297 | #define PUFFS_FLAG_OPDUMP 0x40000000 /* dump all operations */ |
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| 298 | #define PUFFS_FLAG_HASHPATH 0x20000000 /* speedup: hash paths */ |
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| 299 | #define PUFFS_FLAG_PNCOOKIE 0x10000000 /* cookies are pnodes */ |
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| 300 | #define PUFFS_FLAG_MASK 0xf0000000 |
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| 301 | |||
| 302 | #define PUFFS_FLAG_KERN(a) ((a) & PUFFS_KFLAG_MASK)
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| 303 | #define PUFFS_FLAG_LIB(a) ((a) & PUFFS_FLAG_MASK)
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| 304 | |||
| 305 | /* blocking mode argument */
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| 306 | #define PUFFSDEV_BLOCK 0 |
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| 307 | #define PUFFSDEV_NONBLOCK 1 |
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| 308 | |||
| 309 | #define PUFFS_STACKSIZE_DEFAULT (1<<PUFFS_CC_STACKSHIFT_DEFAULT) |
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| 310 | #define PUFFS_STACKSIZE_MIN ((size_t)-1) |
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| 311 | |||
| 312 | #define DENT_DOT 0 |
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| 313 | #define DENT_DOTDOT 1 |
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| 314 | #define DENT_ADJ(a) ((a)-2) /* nth request means dir's n-2th */ |
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| 315 | |||
| 316 | |||
| 317 | /*
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| 318 | * protos
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| 319 | */
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| 320 | |||
| 321 | #define PUFFSOP_PROTOS(fsname) \
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| 322 | int fsname##_fs_unmount(struct puffs_usermount *, int); \ |
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| 323 | int fsname##_fs_statvfs(struct puffs_usermount *, \ |
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| 324 | struct statvfs *); \
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| 325 | int fsname##_fs_sync(struct puffs_usermount *, int, \ |
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| 326 | const struct puffs_cred *cred); \ |
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| 327 | int fsname##_fs_fhtonode(struct puffs_usermount *, void *, \ |
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| 328 | size_t, struct puffs_newinfo *); \
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| 329 | int fsname##_fs_nodetofh(struct puffs_usermount *, \ |
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| 330 | puffs_cookie_t, void *, size_t *); \
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| 331 | int fsname##_fs_extattrctl(struct puffs_usermount *, int, \ |
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| 332 | puffs_cookie_t, int, int, const char *); \ |
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| 333 | \ |
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| 334 | int fsname##_node_lookup(struct puffs_usermount *, \ |
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| 335 | puffs_cookie_t, struct puffs_newinfo *, \
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| 336 | const struct puffs_cn *); \ |
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| 337 | int fsname##_node_create(struct puffs_usermount *, \ |
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| 338 | puffs_cookie_t, struct puffs_newinfo *, \
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| 339 | const struct puffs_cn *, const struct vattr *); \ |
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| 340 | int fsname##_node_mknod(struct puffs_usermount *, \ |
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| 341 | puffs_cookie_t, struct puffs_newinfo *, \
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| 342 | const struct puffs_cn *, const struct vattr *); \ |
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| 343 | int fsname##_node_open(struct puffs_usermount *, \ |
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| 344 | puffs_cookie_t, int, const struct puffs_cred *); \ |
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| 345 | int fsname##_node_close(struct puffs_usermount *, \ |
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| 346 | puffs_cookie_t, int, const struct puffs_cred *); \ |
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| 347 | int fsname##_node_access(struct puffs_usermount *, \ |
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| 348 | puffs_cookie_t, int, const struct puffs_cred *); \ |
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| 349 | int fsname##_node_getattr(struct puffs_usermount *, \ |
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| 350 | puffs_cookie_t, struct vattr *, const struct puffs_cred *); \ |
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| 351 | int fsname##_node_setattr(struct puffs_usermount *, \ |
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| 352 | puffs_cookie_t, const struct vattr *, \ |
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| 353 | const struct puffs_cred *); \ |
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| 354 | int fsname##_node_poll(struct puffs_usermount *, \ |
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| 355 | puffs_cookie_t, int *); \
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| 356 | int fsname##_node_mmap(struct puffs_usermount *, \ |
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| 357 | puffs_cookie_t, vm_prot_t, const struct puffs_cred *); \ |
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| 358 | int fsname##_node_fsync(struct puffs_usermount *, \ |
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| 359 | puffs_cookie_t, const struct puffs_cred *, int, \ |
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| 360 | off_t, off_t); \ |
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| 361 | int fsname##_node_seek(struct puffs_usermount *, \ |
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| 362 | puffs_cookie_t, off_t, off_t, const struct puffs_cred *); \ |
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| 363 | int fsname##_node_remove(struct puffs_usermount *, \ |
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| 364 | puffs_cookie_t, puffs_cookie_t, const struct puffs_cn *); \ |
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| 365 | int fsname##_node_link(struct puffs_usermount *, \ |
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| 366 | puffs_cookie_t, puffs_cookie_t, const struct puffs_cn *); \ |
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| 367 | int fsname##_node_rename(struct puffs_usermount *, \ |
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| 368 | puffs_cookie_t, puffs_cookie_t, const struct puffs_cn *, \ |
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| 369 | puffs_cookie_t, puffs_cookie_t, const struct puffs_cn *); \ |
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| 370 | int fsname##_node_mkdir(struct puffs_usermount *, \ |
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| 371 | puffs_cookie_t, struct puffs_newinfo *, \
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| 372 | const struct puffs_cn *, const struct vattr *); \ |
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| 373 | int fsname##_node_rmdir(struct puffs_usermount *, \ |
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| 374 | puffs_cookie_t, puffs_cookie_t, const struct puffs_cn *); \ |
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| 375 | int fsname##_node_symlink(struct puffs_usermount *, \ |
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| 376 | puffs_cookie_t, struct puffs_newinfo *, \
|
||
| 377 | const struct puffs_cn *, const struct vattr *, \ |
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| 378 | const char *); \ |
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| 379 | int fsname##_node_readdir(struct puffs_usermount *, \ |
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| 380 | puffs_cookie_t, struct dirent *, off_t *, size_t *, \
|
||
| 381 | const struct puffs_cred *, int *, off_t *, size_t *); \ |
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| 382 | int fsname##_node_readlink(struct puffs_usermount *, \ |
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| 383 | puffs_cookie_t, const struct puffs_cred *, char *, \ |
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| 384 | size_t *); \ |
||
| 385 | int fsname##_node_reclaim(struct puffs_usermount *, \ |
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| 386 | puffs_cookie_t); \ |
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| 387 | int fsname##_node_inactive(struct puffs_usermount *, \ |
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| 388 | puffs_cookie_t); \ |
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| 389 | int fsname##_node_print(struct puffs_usermount *, \ |
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| 390 | puffs_cookie_t); \ |
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| 391 | int fsname##_node_pathconf(struct puffs_usermount *, \ |
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| 392 | puffs_cookie_t, int, register_t *); \
|
||
| 393 | int fsname##_node_advlock(struct puffs_usermount *, \ |
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| 394 | puffs_cookie_t, void *, int, struct flock *, int); \ |
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| 395 | int fsname##_node_read(struct puffs_usermount *, puffs_cookie_t,\ |
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| 396 | uint8_t *, off_t, size_t *, const struct puffs_cred *, int);\ |
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| 397 | int fsname##_node_write(struct puffs_usermount *, \ |
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| 398 | puffs_cookie_t, uint8_t *, off_t, size_t *, \ |
||
| 399 | const struct puffs_cred *, int); \ |
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| 400 | int fsname##_node_abortop(struct puffs_usermount *, \ |
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| 401 | puffs_cookie_t, const struct puffs_cn *); \ |
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| 402 | int fsname##_node_getextattr(struct puffs_usermount *, \ |
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| 403 | puffs_cookie_t, int, const char *, size_t *, uint8_t *, \ |
||
| 404 | size_t *, const struct puffs_cred *); \ |
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| 405 | int fsname##_node_setextattr(struct puffs_usermount *, \ |
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| 406 | puffs_cookie_t, int, const char *, uint8_t *, size_t *, \ |
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| 407 | const struct puffs_cred *); \ |
||
| 408 | int fsname##_node_listextattr(struct puffs_usermount *, \ |
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| 409 | puffs_cookie_t, int, size_t *, uint8_t *, size_t *, \
|
||
| 410 | int, const struct puffs_cred *); \ |
||
| 411 | int fsname##_node_deleteextattr(struct puffs_usermount *, \ |
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| 412 | puffs_cookie_t, int, const char *, \ |
||
| 413 | const struct puffs_cred *); \ |
||
| 414 | int fsname##_node_getattr_ttl(struct puffs_usermount *, \ |
||
| 415 | puffs_cookie_t, struct vattr *, const struct puffs_cred *, \ |
||
| 416 | struct timespec *); \
|
||
| 417 | int fsname##_node_setattr_ttl(struct puffs_usermount *, \ |
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| 418 | puffs_cookie_t, struct vattr *, const struct puffs_cred *, \ |
||
| 419 | struct timespec *, int); \ |
||
| 420 | int fsname##_node_write2(struct puffs_usermount *, \ |
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| 421 | puffs_cookie_t, uint8_t *, off_t, size_t *, \ |
||
| 422 | const struct puffs_cred *, int, int); \ |
||
| 423 | int fsname##_node_reclaim2(struct puffs_usermount *, \ |
||
| 424 | puffs_cookie_t, int); \
|
||
| 425 | int fsname##_node_open2(struct puffs_usermount *, \ |
||
| 426 | puffs_cookie_t, int, const struct puffs_cred *, int *); \ |
||
| 427 | int fsname##_node_fallocate(struct puffs_usermount *, \ |
||
| 428 | puffs_cookie_t, int, off_t, off_t); \
|
||
| 429 | int fsname##_node_fdiscard(struct puffs_usermount *, \ |
||
| 430 | puffs_cookie_t, int, off_t, off_t);
|
||
| 431 | |||
| 432 | |||
| 433 | #define PUFFSOP_INIT(ops) \
|
||
| 434 | ops = malloc(sizeof(struct puffs_ops)); \ |
||
| 435 | memset(ops, 0, sizeof(struct puffs_ops)) |
||
| 436 | #define PUFFSOP_SET(ops, fsname, fsornode, opname) \
|
||
| 437 | (ops)->puffs_##fsornode##_##opname = fsname##_##fsornode##_##opname |
||
| 438 | #define PUFFSOP_SETFSNOP(ops, opname) \
|
||
| 439 | (ops)->puffs_fs_##opname = puffs_fsnop_##opname |
||
| 440 | |||
| 441 | PUFFSOP_PROTOS(puffs_null) /* XXX */
|
||
| 442 | |||
| 443 | #define PNPATH(pnode) ((pnode)->pn_po.po_path)
|
||
| 444 | #define PNPLEN(pnode) ((pnode)->pn_po.po_len)
|
||
| 445 | #define PCNPATH(pcnode) ((pcnode)->pcn_po_full.po_path)
|
||
| 446 | #define PCNPLEN(pcnode) ((pcnode)->pcn_po_full.po_len)
|
||
| 447 | #define PCNISDOTDOT(pcnode) \
|
||
| 448 | ((pcnode)->pcn_namelen == 2 && strcmp((pcnode)->pcn_name, "..") == 0) |
||
| 449 | |||
| 450 | #define PUFFS_STORE_DCOOKIE(cp, ncp, off) \
|
||
| 451 | if (cp) { \
|
||
| 452 | *((cp)++) = off; \ |
||
| 453 | (*(ncp))++; \ |
||
| 454 | } |
||
| 455 | |||
| 456 | /* mainloop */
|
||
| 457 | typedef void (*puffs_ml_loop_fn)(struct puffs_usermount *); |
||
| 458 | |||
| 459 | /* framebuf stuff */
|
||
| 460 | struct puffs_framebuf;
|
||
| 461 | typedef int (*puffs_framev_readframe_fn)(struct puffs_usermount *, |
||
| 462 | struct puffs_framebuf *,
|
||
| 463 | int, int *); |
||
| 464 | typedef int (*puffs_framev_writeframe_fn)(struct puffs_usermount *, |
||
| 465 | struct puffs_framebuf *,
|
||
| 466 | int, int *); |
||
| 467 | typedef int (*puffs_framev_cmpframe_fn)(struct puffs_usermount *, |
||
| 468 | struct puffs_framebuf *,
|
||
| 469 | struct puffs_framebuf *,
|
||
| 470 | int *);
|
||
| 471 | typedef void (*puffs_framev_fdnotify_fn)(struct puffs_usermount *, int, int); |
||
| 472 | typedef void (*puffs_framev_gotframe_fn)(struct puffs_usermount *, |
||
| 473 | struct puffs_framebuf *);
|
||
| 474 | typedef void (*puffs_framev_cb)(struct puffs_usermount *, |
||
| 475 | struct puffs_framebuf *,
|
||
| 476 | void *, int); |
||
| 477 | #define PUFFS_FBIO_READ 0x01 |
||
| 478 | #define PUFFS_FBIO_WRITE 0x02 |
||
| 479 | #define PUFFS_FBIO_ERROR 0x04 |
||
| 480 | |||
| 481 | #define PUFFS_FBQUEUE_URGENT 0x01 |
||
| 482 | |||
| 483 | |||
| 484 | __BEGIN_DECLS |
||
| 485 | |||
| 486 | #define PUFFS_DEFER ((void *)-1) |
||
| 487 | struct puffs_usermount *puffs_init(struct puffs_ops *, const char *, |
||
| 488 | const char *, void *, uint32_t); |
||
| 489 | int puffs_mount(struct puffs_usermount *, const char *, int, void*); |
||
| 490 | int puffs_exit(struct puffs_usermount *, int); |
||
| 491 | void puffs_cancel(struct puffs_usermount *, int); |
||
| 492 | int puffs_mainloop(struct puffs_usermount *); |
||
| 493 | int puffs_daemon(struct puffs_usermount *, int, int); |
||
| 494 | |||
| 495 | int puffs_unmountonsignal(int, bool); |
||
| 496 | |||
| 497 | |||
| 498 | int puffs_getselectable(struct puffs_usermount *); |
||
| 499 | int puffs_setblockingmode(struct puffs_usermount *, int); |
||
| 500 | int puffs_getstate(struct puffs_usermount *); |
||
| 501 | void puffs_setstacksize(struct puffs_usermount *, size_t); |
||
| 502 | |||
| 503 | void puffs_ml_setloopfn(struct puffs_usermount *, puffs_ml_loop_fn); |
||
| 504 | void puffs_ml_settimeout(struct puffs_usermount *, struct timespec *); |
||
| 505 | |||
| 506 | void puffs_setroot(struct puffs_usermount *, |
||
| 507 | struct puffs_node *);
|
||
| 508 | struct puffs_node *puffs_getroot(struct puffs_usermount *); |
||
| 509 | void puffs_setrootinfo(struct puffs_usermount *, |
||
| 510 | enum vtype, vsize_t, dev_t);
|
||
| 511 | |||
| 512 | void *puffs_getspecific(struct puffs_usermount *); |
||
| 513 | void puffs_setspecific(struct puffs_usermount *, void *); |
||
| 514 | void puffs_setmaxreqlen(struct puffs_usermount *, size_t); |
||
| 515 | size_t puffs_getmaxreqlen(struct puffs_usermount *);
|
||
| 516 | void puffs_setfhsize(struct puffs_usermount *, size_t, int); |
||
| 517 | void puffs_setmntinfo(struct puffs_usermount *, |
||
| 518 | const char *, const char *); |
||
| 519 | |||
| 520 | void puffs_setncookiehash(struct puffs_usermount *, int); |
||
| 521 | |||
| 522 | struct puffs_pathobj *puffs_getrootpathobj(struct puffs_usermount *); |
||
| 523 | |||
| 524 | void puffs_setback(struct puffs_cc *, int); |
||
| 525 | |||
| 526 | struct puffs_node *puffs_pn_new(struct puffs_usermount *, void *); |
||
| 527 | void puffs_pn_remove(struct puffs_node *); |
||
| 528 | void puffs_pn_put(struct puffs_node *); |
||
| 529 | struct vattr *puffs_pn_getvap(struct puffs_node *); |
||
| 530 | void * puffs_pn_getpriv(struct puffs_node *); |
||
| 531 | void puffs_pn_setpriv(struct puffs_node *, void *); |
||
| 532 | struct puffs_pathobj *puffs_pn_getpo(struct puffs_node *); |
||
| 533 | struct puffs_usermount *puffs_pn_getmnt(struct puffs_node *); |
||
| 534 | struct timespec *puffs_pn_getvattl(struct puffs_node *); |
||
| 535 | struct timespec *puffs_pn_getcnttl(struct puffs_node *); |
||
| 536 | |||
| 537 | void puffs_newinfo_setcookie(struct puffs_newinfo *, puffs_cookie_t); |
||
| 538 | void puffs_newinfo_setvtype(struct puffs_newinfo *, enum vtype); |
||
| 539 | void puffs_newinfo_setsize(struct puffs_newinfo *, voff_t); |
||
| 540 | void puffs_newinfo_setrdev(struct puffs_newinfo *, dev_t); |
||
| 541 | void puffs_newinfo_setva(struct puffs_newinfo *, struct vattr *); |
||
| 542 | void puffs_newinfo_setvattl(struct puffs_newinfo *, struct timespec *); |
||
| 543 | void puffs_newinfo_setcnttl(struct puffs_newinfo *, struct timespec *); |
||
| 544 | |||
| 545 | void *puffs_pn_getmntspecific(struct puffs_node *); |
||
| 546 | |||
| 547 | typedef void * (*puffs_nodewalk_fn)(struct puffs_usermount *, |
||
| 548 | struct puffs_node *, void *); |
||
| 549 | void *puffs_pn_nodewalk(struct puffs_usermount *, |
||
| 550 | puffs_nodewalk_fn, void *);
|
||
| 551 | |||
| 552 | void puffs_setvattr(struct vattr *, const struct vattr *); |
||
| 553 | void puffs_vattr_null(struct vattr *); |
||
| 554 | |||
| 555 | void puffs_null_setops(struct puffs_ops *); |
||
| 556 | |||
| 557 | int puffs_dispatch_create(struct puffs_usermount *, |
||
| 558 | struct puffs_framebuf *,
|
||
| 559 | struct puffs_cc **);
|
||
| 560 | int puffs_dispatch_exec(struct puffs_cc *, |
||
| 561 | struct puffs_framebuf **);
|
||
| 562 | |||
| 563 | /*
|
||
| 564 | * generic/dummy routines applicable for some file systems
|
||
| 565 | */
|
||
| 566 | int puffs_fsnop_unmount(struct puffs_usermount *, int); |
||
| 567 | int puffs_fsnop_statvfs(struct puffs_usermount *, struct statvfs *); |
||
| 568 | void puffs_zerostatvfs(struct statvfs *); |
||
| 569 | int puffs_fsnop_sync(struct puffs_usermount *, int waitfor, |
||
| 570 | const struct puffs_cred *); |
||
| 571 | |||
| 572 | int puffs_genfs_node_getattr(struct puffs_usermount *, puffs_cookie_t, |
||
| 573 | struct vattr *, const struct puffs_cred *); |
||
| 574 | int puffs_genfs_node_reclaim(struct puffs_usermount *, puffs_cookie_t); |
||
| 575 | |||
| 576 | /*
|
||
| 577 | * Subroutine stuff
|
||
| 578 | */
|
||
| 579 | |||
| 580 | int puffs_gendotdent(struct dirent **, ino_t, int, size_t *); |
||
| 581 | int puffs_nextdent(struct dirent **, const char *, ino_t, |
||
| 582 | uint8_t, size_t *); |
||
| 583 | int puffs_vtype2dt(enum vtype); |
||
| 584 | enum vtype puffs_mode2vt(mode_t);
|
||
| 585 | void puffs_stat2vattr(struct vattr *va, const struct stat *); |
||
| 586 | mode_t puffs_addvtype2mode(mode_t, enum vtype);
|
||
| 587 | |||
| 588 | |||
| 589 | /*
|
||
| 590 | * credentials & permissions
|
||
| 591 | */
|
||
| 592 | |||
| 593 | /* Credential fetch */
|
||
| 594 | int puffs_cred_getuid(const struct puffs_cred *, uid_t *); |
||
| 595 | int puffs_cred_getgid(const struct puffs_cred *, gid_t *); |
||
| 596 | int puffs_cred_getgroups(const struct puffs_cred *, gid_t *, short *); |
||
| 597 | |||
| 598 | /* Credential check */
|
||
| 599 | bool puffs_cred_isuid(const struct puffs_cred *, uid_t); |
||
| 600 | bool puffs_cred_hasgroup(const struct puffs_cred *, gid_t); |
||
| 601 | bool puffs_cred_isregular(const struct puffs_cred *); |
||
| 602 | bool puffs_cred_iskernel(const struct puffs_cred *); |
||
| 603 | bool puffs_cred_isfs(const struct puffs_cred *); |
||
| 604 | bool puffs_cred_isjuggernaut(const struct puffs_cred *); |
||
| 605 | |||
| 606 | /* misc */
|
||
| 607 | int puffs_access(enum vtype, mode_t, uid_t, gid_t, mode_t, |
||
| 608 | const struct puffs_cred *); |
||
| 609 | int puffs_access_chown(uid_t, gid_t, uid_t, gid_t,
|
||
| 610 | const struct puffs_cred *); |
||
| 611 | int puffs_access_chmod(uid_t, gid_t, enum vtype, mode_t, |
||
| 612 | const struct puffs_cred *); |
||
| 613 | int puffs_access_times(uid_t, gid_t, mode_t, int, |
||
| 614 | const struct puffs_cred *); |
||
| 615 | |||
| 616 | |||
| 617 | /*
|
||
| 618 | * Call Context interfaces relevant for user.
|
||
| 619 | */
|
||
| 620 | |||
| 621 | void puffs_cc_yield(struct puffs_cc *); |
||
| 622 | void puffs_cc_continue(struct puffs_cc *); |
||
| 623 | void puffs_cc_schedule(struct puffs_cc *); |
||
| 624 | int puffs_cc_getcaller(struct puffs_cc *,pid_t *,lwpid_t *); |
||
| 625 | struct puffs_cc *puffs_cc_getcc(struct puffs_usermount *); |
||
| 626 | |||
| 627 | /*
|
||
| 628 | * Flushing / invalidation routines
|
||
| 629 | */
|
||
| 630 | |||
| 631 | int puffs_inval_namecache_dir(struct puffs_usermount *, puffs_cookie_t); |
||
| 632 | int puffs_inval_namecache_all(struct puffs_usermount *); |
||
| 633 | |||
| 634 | int puffs_inval_pagecache_node(struct puffs_usermount *, puffs_cookie_t); |
||
| 635 | int puffs_inval_pagecache_node_range(struct puffs_usermount *, |
||
| 636 | puffs_cookie_t, off_t, off_t); |
||
| 637 | int puffs_flush_pagecache_node(struct puffs_usermount *, puffs_cookie_t); |
||
| 638 | int puffs_flush_pagecache_node_range(struct puffs_usermount *, |
||
| 639 | puffs_cookie_t, off_t, off_t); |
||
| 640 | |||
| 641 | /*
|
||
| 642 | * Path constructicons
|
||
| 643 | */
|
||
| 644 | |||
| 645 | int puffs_stdpath_buildpath(struct puffs_usermount *, |
||
| 646 | const struct puffs_pathobj *, |
||
| 647 | const struct puffs_pathobj *, size_t, |
||
| 648 | struct puffs_pathobj *);
|
||
| 649 | int puffs_stdpath_cmppath(struct puffs_usermount *, struct puffs_pathobj *, |
||
| 650 | struct puffs_pathobj *, size_t, int); |
||
| 651 | void puffs_stdpath_freepath(struct puffs_usermount *,struct puffs_pathobj *); |
||
| 652 | |||
| 653 | void *puffs_path_walkcmp(struct puffs_usermount *, |
||
| 654 | struct puffs_node *, void *); |
||
| 655 | void *puffs_path_prefixadj(struct puffs_usermount *, |
||
| 656 | struct puffs_node *, void *); |
||
| 657 | int puffs_path_pcnbuild(struct puffs_usermount *, |
||
| 658 | struct puffs_cn *, void *); |
||
| 659 | void puffs_path_buildhash(struct puffs_usermount *, struct puffs_pathobj *); |
||
| 660 | void puffs_set_pathbuild(struct puffs_usermount *, pu_pathbuild_fn); void puffs_set_pathtransform(struct puffs_usermount *, pu_pathtransform_fn); |
||
| 661 | void puffs_set_pathcmp(struct puffs_usermount *, pu_pathcmp_fn); |
||
| 662 | void puffs_set_pathfree(struct puffs_usermount *, pu_pathfree_fn); |
||
| 663 | void puffs_set_namemod(struct puffs_usermount *, pu_namemod_fn); |
||
| 664 | |||
| 665 | void puffs_set_errnotify(struct puffs_usermount *, pu_errnotify_fn); |
||
| 666 | void puffs_kernerr_log(struct puffs_usermount *, uint8_t, int, |
||
| 667 | const char *, puffs_cookie_t); |
||
| 668 | __dead void puffs_kernerr_abort(struct puffs_usermount *, uint8_t, int, |
||
| 669 | const char *, puffs_cookie_t); |
||
| 670 | void puffs_set_prepost(struct puffs_usermount *, |
||
| 671 | pu_prepost_fn, pu_prepost_fn); |
||
| 672 | void puffs_set_cmap(struct puffs_usermount *, pu_cmap_fn); |
||
| 673 | |||
| 674 | /*
|
||
| 675 | * Suspension
|
||
| 676 | */
|
||
| 677 | |||
| 678 | int puffs_fs_suspend(struct puffs_usermount *); |
||
| 679 | |||
| 680 | /*
|
||
| 681 | * Frame buffering
|
||
| 682 | */
|
||
| 683 | |||
| 684 | void puffs_framev_init(struct puffs_usermount *, |
||
| 685 | puffs_framev_readframe_fn, |
||
| 686 | puffs_framev_writeframe_fn, |
||
| 687 | puffs_framev_cmpframe_fn, |
||
| 688 | puffs_framev_gotframe_fn, |
||
| 689 | puffs_framev_fdnotify_fn); |
||
| 690 | |||
| 691 | struct puffs_framebuf *puffs_framebuf_make(void); |
||
| 692 | void puffs_framebuf_destroy(struct puffs_framebuf *); |
||
| 693 | int puffs_framebuf_dup(struct puffs_framebuf *, |
||
| 694 | struct puffs_framebuf **);
|
||
| 695 | void puffs_framebuf_recycle(struct puffs_framebuf *); |
||
| 696 | int puffs_framebuf_reserve_space(struct puffs_framebuf *, |
||
| 697 | size_t); |
||
| 698 | |||
| 699 | int puffs_framebuf_putdata(struct puffs_framebuf *, const void *, size_t); |
||
| 700 | int puffs_framebuf_putdata_atoff(struct puffs_framebuf *, size_t, |
||
| 701 | const void *, size_t); |
||
| 702 | int puffs_framebuf_getdata(struct puffs_framebuf *, void *, size_t); |
||
| 703 | int puffs_framebuf_getdata_atoff(struct puffs_framebuf *, size_t, |
||
| 704 | void *, size_t);
|
||
| 705 | |||
| 706 | size_t puffs_framebuf_telloff(struct puffs_framebuf *);
|
||
| 707 | size_t puffs_framebuf_tellsize(struct puffs_framebuf *);
|
||
| 708 | size_t puffs_framebuf_remaining(struct puffs_framebuf *);
|
||
| 709 | int puffs_framebuf_seekset(struct puffs_framebuf *, size_t); |
||
| 710 | int puffs_framebuf_getwindow(struct puffs_framebuf *, size_t, |
||
| 711 | void **, size_t *);
|
||
| 712 | |||
| 713 | int puffs_framev_enqueue_cc(struct puffs_cc *, int, |
||
| 714 | struct puffs_framebuf *, int); |
||
| 715 | int puffs_framev_enqueue_cb(struct puffs_usermount *, int, |
||
| 716 | struct puffs_framebuf *,
|
||
| 717 | puffs_framev_cb, void *, int); |
||
| 718 | int puffs_framev_enqueue_justsend(struct puffs_usermount *, int, |
||
| 719 | struct puffs_framebuf *, int, int); |
||
| 720 | int puffs_framev_enqueue_directreceive(struct puffs_cc *, int, |
||
| 721 | struct puffs_framebuf *, int); |
||
| 722 | int puffs_framev_enqueue_directsend(struct puffs_cc *, int, |
||
| 723 | struct puffs_framebuf *, int); |
||
| 724 | int puffs_framev_enqueue_waitevent(struct puffs_cc *, int, int *); |
||
| 725 | int puffs_framev_framebuf_ccpromote(struct puffs_framebuf *, |
||
| 726 | struct puffs_cc *);
|
||
| 727 | |||
| 728 | int puffs_framev_addfd(struct puffs_usermount *, int, int); |
||
| 729 | int puffs_framev_enablefd(struct puffs_usermount *, int, int); |
||
| 730 | int puffs_framev_disablefd(struct puffs_usermount *, int, int); |
||
| 731 | int puffs_framev_removefd(struct puffs_usermount *, int, int); |
||
| 732 | void puffs_framev_removeonclose(struct puffs_usermount *, int, int); |
||
| 733 | void puffs_framev_unmountonclose(struct puffs_usermount *, int, int); |
||
| 734 | |||
| 735 | __END_DECLS |
||
| 736 | |||
| 737 | #endif /* _PUFFS_H_ */ |