sys/ufs/lfs/lfs_extern.h

   1 /*      $NetBSD: lfs_extern.h,v 1.95 2008/04/28 20:24:11 martin Exp $   */
   2
   3 /*-
   4  * Copyright (c) 1999, 2000, 2001, 2002, 2003 The NetBSD Foundation, Inc.
   5  * All rights reserved.
   6  *
   7  * This code is derived from software contributed to The NetBSD Foundation
   8  * by Konrad E. Schroder <perseant@hhhh.org>.
   9  *
  10  * Redistribution and use in source and binary forms, with or without
  11  * modification, are permitted provided that the following conditions
  12  * are met:
  13  * 1. Redistributions of source code must retain the above copyright
  14  *    notice, this list of conditions and the following disclaimer.
  15  * 2. Redistributions in binary form must reproduce the above copyright
  16  *    notice, this list of conditions and the following disclaimer in the
  17  *    documentation and/or other materials provided with the distribution.
  18  *
  19  * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS
  20  * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
  21  * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
  22  * PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS
  23  * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
  24  * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
  25  * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
  26  * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
  27  * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
  28  * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
  29  * POSSIBILITY OF SUCH DAMAGE.
  30  */
  31 /*-
  32  * Copyright (c) 1991, 1993, 1994
  33  *      The Regents of the University of California.  All rights reserved.
  34  *
  35  * Redistribution and use in source and binary forms, with or without
  36  * modification, are permitted provided that the following conditions
  37  * are met:
  38  * 1. Redistributions of source code must retain the above copyright
  39  *    notice, this list of conditions and the following disclaimer.
  40  * 2. Redistributions in binary form must reproduce the above copyright
  41  *    notice, this list of conditions and the following disclaimer in the
  42  *    documentation and/or other materials provided with the distribution.
  43  * 3. Neither the name of the University nor the names of its contributors
  44  *    may be used to endorse or promote products derived from this software
  45  *    without specific prior written permission.
  46  *
  47  * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
  48  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
  49  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
  50  * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
  51  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
  52  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
  53  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
  54  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
  55  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
  56  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
  57  * SUCH DAMAGE.
  58  *
  59  *      @(#)lfs_extern.h        8.6 (Berkeley) 5/8/95
  60  */
  61
  62 #ifndef _UFS_LFS_LFS_EXTERN_H_
  63 #define _UFS_LFS_LFS_EXTERN_H_
  64
  65 #ifdef _KERNEL
  66 #include <sys/mallocvar.h>
  67
  68 MALLOC_DECLARE(M_SEGMENT);
  69 #endif
  70
  71 /* Copied from ext2fs for ITIMES.  XXX This is a bogus use of v_tag. */
  72 #define IS_LFS_VNODE(vp)   (vp->v_tag == VT_LFS)
  73
  74 /*
  75  * Sysctl values for LFS.
  76  */
  77 #define LFS_WRITEINDIR   1 /* flush indirect blocks on non-checkpoint writes */
  78 #define LFS_CLEAN_VNHEAD 2 /* put prev unrefed cleaned vnodes on head of free list */
  79 #define LFS_DOSTATS      3
  80 #define LFS_MAXPAGES     4
  81 #define LFS_FS_PAGETRIP  5
  82 #define LFS_STATS        6
  83 #define LFS_DO_RFW       7
  84 #define LFS_DEBUGLOG     8
  85 #define LFS_IGNORE_LAZY_SYNC    9
  86 #define LFS_MAXID        10
  87
  88 struct fid;
  89 struct mount;
  90 struct nameidata;
  91 struct proc;
  92 struct statvfs;
  93 struct timeval;
  94 struct inode;
  95 struct uio;
  96 struct mbuf;
  97 struct ufs1_dinode;
  98 struct buf;
  99 struct vnode;
 100 struct dlfs;
 101 struct lfs;
 102 struct segment;
 103 struct block_info;
 104
 105 #if defined(_KERNEL)
 106
 107 extern int lfs_allclean_wakeup;
 108 extern struct pool lfs_inode_pool;              /* memory pool for inodes */
 109 extern struct pool lfs_dinode_pool;             /* memory pool for dinodes */
 110 extern struct pool lfs_inoext_pool;     /* memory pool for inode extension */
 111 extern struct pool lfs_lbnentry_pool;   /* memory pool for balloc accounting */
 112
 113 extern int locked_queue_count;
 114 extern long locked_queue_bytes;
 115 extern int lfs_subsys_pages;
 116 extern int lfs_dirvcount;
 117 extern kmutex_t lfs_lock;
 118 extern int lfs_debug_log_subsys[];
 119 extern kcondvar_t lfs_writing_cv;
 120 extern kcondvar_t locked_queue_cv;
 121
 122 __BEGIN_DECLS
 123 /* lfs_alloc.c */
 124 void lfs_vcreate(struct mount *, ino_t, struct vnode *);
 125 int lfs_valloc(struct vnode *, int, kauth_cred_t, struct vnode **);
 126 int lfs_vfree(struct vnode *, ino_t, int);
 127 void lfs_order_freelist(struct lfs *);
 128 int lfs_extend_ifile(struct lfs *, kauth_cred_t);
 129 int lfs_ialloc(struct lfs *, struct vnode *, ino_t, int, struct vnode **);
 130 void lfs_orphan(struct lfs *, ino_t);
 131
 132 /* lfs_balloc.c */
 133 int lfs_balloc(struct vnode *, off_t, int, kauth_cred_t, int, struct buf **);
 134 void lfs_register_block(struct vnode *, daddr_t);
 135 void lfs_deregister_block(struct vnode *, daddr_t);
 136 void lfs_deregister_all(struct vnode *);
 137
 138 /* lfs_bio.c */
 139 int lfs_availwait(struct lfs *, int);
 140 int lfs_bwrite_ext(struct buf *, int);
 141 int lfs_fits(struct lfs *, int);
 142 void lfs_flush_fs(struct lfs *, int);
 143 void lfs_flush(struct lfs *, int, int);
 144 int lfs_check(struct vnode *, daddr_t, int);
 145 void lfs_freebuf(struct lfs *, struct buf *);
 146 struct buf *lfs_newbuf(struct lfs *, struct vnode *, daddr_t, size_t, int);
 147 void lfs_countlocked(int *, long *, const char *);
 148 int lfs_reserve(struct lfs *, struct vnode *, struct vnode *, int);
 149
 150 /* lfs_debug.c */
 151 #ifdef DEBUG
 152 int lfs_bwrite_log(struct buf *, const char *, int);
 153 void lfs_dumplog(void);
 154 void lfs_dump_super(struct lfs *);
 155 void lfs_dump_dinode(struct ufs1_dinode *);
 156 void lfs_check_bpp(struct lfs *, struct segment *, char *, int);
 157 void lfs_check_segsum(struct lfs *, struct segment *, char *, int);
 158 void lfs_debug_log(int, const char *, ...);
 159 #endif /* DEBUG */
 160
 161 /* lfs_inode.c */
 162 int lfs_update(struct vnode *, const struct timespec *, const struct timespec *,
 163     int);
 164 int lfs_truncate(struct vnode *, off_t, int, kauth_cred_t);
 165 struct ufs1_dinode *lfs_ifind(struct lfs *, ino_t, struct buf *);
 166 void lfs_finalize_ino_seguse(struct lfs *, struct inode *);
 167 void lfs_finalize_fs_seguse(struct lfs *);
 168
 169 /* lfs_rfw.c */
 170 int lfs_rf_valloc(struct lfs *, ino_t, int, struct lwp *, struct vnode **);
 171 void lfs_roll_forward(struct lfs *, struct mount *, struct lwp *);
 172
 173 /* lfs_segment.c */
 174 void lfs_imtime(struct lfs *);
 175 int lfs_vflush(struct vnode *);
 176 int lfs_segwrite(struct mount *, int);
 177 int lfs_writefile(struct lfs *, struct segment *, struct vnode *);
 178 int lfs_writeinode(struct lfs *, struct segment *, struct inode *);
 179 int lfs_gatherblock(struct segment *, struct buf *, kmutex_t *);
 180 int lfs_gather(struct lfs *, struct segment *, struct vnode *, int (*match )(struct lfs *, struct buf *));
 181 void lfs_update_single(struct lfs *, struct segment *, struct vnode *,
 182     daddr_t, int32_t, int);
 183 void lfs_updatemeta(struct segment *);
 184 int lfs_rewind(struct lfs *, int);
 185 void lfs_unset_inval_all(struct lfs *);
 186 int lfs_initseg(struct lfs *);
 187 int lfs_writeseg(struct lfs *, struct segment *);
 188 void lfs_writesuper(struct lfs *, daddr_t);
 189 int lfs_match_data(struct lfs *, struct buf *);
 190 int lfs_match_indir(struct lfs *, struct buf *);
 191 int lfs_match_dindir(struct lfs *, struct buf *);
 192 int lfs_match_tindir(struct lfs *, struct buf *);
 193 void lfs_callback(struct buf *);
 194 int lfs_vref(struct vnode *);
 195 void lfs_vunref(struct vnode *);
 196 void lfs_vunref_head(struct vnode *);
 197 void lfs_acquire_finfo(struct lfs *fs, ino_t, int);
 198 void lfs_release_finfo(struct lfs *fs);
 199
 200 /* lfs_subr.c */
 201 void lfs_setup_resblks(struct lfs *);
 202 void lfs_pad_check(unsigned char *, int, char *, int);
 203 void lfs_free_resblks(struct lfs *);
 204 void *lfs_malloc(struct lfs *, size_t, int);
 205 void lfs_free(struct lfs *, void *, int);
 206 int lfs_seglock(struct lfs *, unsigned long);
 207 void lfs_segunlock(struct lfs *);
 208 void lfs_segunlock_relock(struct lfs *);
 209 int lfs_writer_enter(struct lfs *, const char *);
 210 void lfs_writer_leave(struct lfs *);
 211 void lfs_wakeup_cleaner(struct lfs *);
 212
 213 /* lfs_syscalls.c */
 214 int lfs_fastvget(struct mount *, ino_t, daddr_t, struct vnode **, struct ufs1_dinode *);
 215 struct buf *lfs_fakebuf(struct lfs *, struct vnode *, int, size_t, void *);
 216 int lfs_do_segclean(struct lfs *, unsigned long);
 217 int lfs_segwait(fsid_t *, struct timeval *);
 218 int lfs_bmapv(struct proc *, fsid_t *, struct block_info *, int);
 219 int lfs_markv(struct proc *, fsid_t *, struct block_info *, int);
 220
 221 /* lfs_vfsops.c */
 222 void lfs_init(void);
 223 void lfs_reinit(void);
 224 void lfs_done(void);
 225 int lfs_mountroot(void);
 226 int lfs_mount(struct mount *, const char *, void *, size_t *);
 227 int lfs_unmount(struct mount *, int);
 228 int lfs_statvfs(struct mount *, struct statvfs *);
 229 int lfs_sync(struct mount *, int, kauth_cred_t);
 230 int lfs_vget(struct mount *, ino_t, struct vnode **);
 231 int lfs_fhtovp(struct mount *, struct fid *, struct vnode **);
 232 int lfs_vptofh(struct vnode *, struct fid *, size_t *);
 233 void lfs_vinit(struct mount *, struct vnode **);
 234 int lfs_resize_fs(struct lfs *, int);
 235
 236 /* lfs_vnops.c */
 237 void lfs_mark_vnode(struct vnode *);
 238 void lfs_unmark_vnode(struct vnode *);
 239 int lfs_gop_alloc(struct vnode *, off_t, off_t, int, kauth_cred_t);
 240 void lfs_gop_size(struct vnode *, off_t, off_t *, int);
 241 int lfs_putpages_ext(void *, int);
 242 int lfs_gatherpages(struct vnode *);
 243 void lfs_flush_dirops(struct lfs *);
 244 void lfs_flush_pchain(struct lfs *);
 245
 246 int lfs_bwrite   (void *);
 247 int lfs_fsync    (void *);
 248 int lfs_symlink  (void *);
 249 int lfs_mknod    (void *);
 250 int lfs_create   (void *);
 251 int lfs_mkdir    (void *);
 252 int lfs_read     (void *);
 253 int lfs_remove   (void *);
 254 int lfs_rmdir    (void *);
 255 int lfs_link     (void *);
 256 int lfs_mmap     (void *);
 257 int lfs_rename   (void *);
 258 int lfs_getattr  (void *);
 259 int lfs_setattr  (void *);
 260 int lfs_close    (void *);
 261 int lfsspec_close(void *);
 262 int lfsfifo_close(void *);
 263 int lfs_fcntl    (void *);
 264 int lfs_inactive (void *);
 265 int lfs_reclaim  (void *);
 266 int lfs_strategy (void *);
 267 int lfs_write    (void *);
 268 int lfs_getpages (void *);
 269 int lfs_putpages (void *);
 270
 271 extern int lfs_mount_type;
 272 extern int (**lfs_vnodeop_p)(void *);
 273 extern int (**lfs_specop_p)(void *);
 274 extern int (**lfs_fifoop_p)(void *);
 275 extern const struct genfs_ops lfs_genfsops;
 276
 277 #endif /* defined(_KERNEL) */
 278
 279 /* lfs_cksum.c */
 280 u_int32_t cksum(void *, size_t);
 281 u_int32_t lfs_cksum_part(void *, size_t, u_int32_t);
 282 #define lfs_cksum_fold(sum)     (sum)
 283 u_int32_t lfs_sb_cksum(struct dlfs *);
 284
 285 __END_DECLS
 286
 287 #endif /* !_UFS_LFS_LFS_EXTERN_H_ */