1 /* 2 * Copyright (c) 1986, 1989, 1991, 1993 3 * The Regents of the University of California. All rights reserved. 4 * 5 * %sccs.include.redist.c% 6 * 7 * @(#)lfs_vnops.c 8.4 (Berkeley) 09/23/93 8 */ 9 10 #include <sys/param.h> 11 #include <sys/systm.h> 12 #include <sys/namei.h> 13 #include <sys/resourcevar.h> 14 #include <sys/kernel.h> 15 #include <sys/file.h> 16 #include <sys/stat.h> 17 #include <sys/buf.h> 18 #include <sys/proc.h> 19 #include <sys/conf.h> 20 #include <sys/mount.h> 21 #include <sys/vnode.h> 22 #include <sys/malloc.h> 23 24 #include <vm/vm.h> 25 26 #include <miscfs/specfs/specdev.h> 27 #include <miscfs/fifofs/fifo.h> 28 29 #include <ufs/ufs/quota.h> 30 #include <ufs/ufs/inode.h> 31 #include <ufs/ufs/dir.h> 32 #include <ufs/ufs/ufsmount.h> 33 #include <ufs/ufs/ufs_extern.h> 34 35 #include <ufs/lfs/lfs.h> 36 #include <ufs/lfs/lfs_extern.h> 37 38 /* Global vfs data structures for lfs. */ 39 int (**lfs_vnodeop_p)(); 40 struct vnodeopv_entry_desc lfs_vnodeop_entries[] = { 41 { &vop_default_desc, vn_default_error }, 42 { &vop_lookup_desc, ufs_lookup }, /* lookup */ 43 { &vop_create_desc, ufs_create }, /* create */ 44 { &vop_mknod_desc, ufs_mknod }, /* mknod */ 45 { &vop_open_desc, ufs_open }, /* open */ 46 { &vop_close_desc, lfs_close }, /* close */ 47 { &vop_access_desc, ufs_access }, /* access */ 48 { &vop_getattr_desc, lfs_getattr }, /* getattr */ 49 { &vop_setattr_desc, ufs_setattr }, /* setattr */ 50 { &vop_read_desc, lfs_read }, /* read */ 51 { &vop_write_desc, lfs_write }, /* write */ 52 { &vop_ioctl_desc, ufs_ioctl }, /* ioctl */ 53 { &vop_select_desc, ufs_select }, /* select */ 54 { &vop_mmap_desc, ufs_mmap }, /* mmap */ 55 { &vop_fsync_desc, lfs_fsync }, /* fsync */ 56 { &vop_seek_desc, ufs_seek }, /* seek */ 57 { &vop_remove_desc, ufs_remove }, /* remove */ 58 { &vop_link_desc, ufs_link }, /* link */ 59 { &vop_rename_desc, ufs_rename }, /* rename */ 60 { &vop_mkdir_desc, ufs_mkdir }, /* mkdir */ 61 { &vop_rmdir_desc, ufs_rmdir }, /* rmdir */ 62 { &vop_symlink_desc, ufs_symlink }, /* symlink */ 63 { &vop_readdir_desc, ufs_readdir }, /* readdir */ 64 { &vop_readlink_desc, ufs_readlink }, /* readlink */ 65 { &vop_abortop_desc, ufs_abortop }, /* abortop */ 66 { &vop_inactive_desc, ufs_inactive }, /* inactive */ 67 { &vop_reclaim_desc, ufs_reclaim }, /* reclaim */ 68 { &vop_lock_desc, ufs_lock }, /* lock */ 69 { &vop_unlock_desc, ufs_unlock }, /* unlock */ 70 { &vop_bmap_desc, ufs_bmap }, /* bmap */ 71 { &vop_strategy_desc, ufs_strategy }, /* strategy */ 72 { &vop_print_desc, ufs_print }, /* print */ 73 { &vop_islocked_desc, ufs_islocked }, /* islocked */ 74 { &vop_pathconf_desc, ufs_pathconf }, /* pathconf */ 75 { &vop_advlock_desc, ufs_advlock }, /* advlock */ 76 { &vop_blkatoff_desc, lfs_blkatoff }, /* blkatoff */ 77 { &vop_valloc_desc, lfs_valloc }, /* valloc */ 78 { &vop_vfree_desc, lfs_vfree }, /* vfree */ 79 { &vop_truncate_desc, lfs_truncate }, /* truncate */ 80 { &vop_update_desc, lfs_update }, /* update */ 81 { &vop_bwrite_desc, lfs_bwrite }, /* bwrite */ 82 { (struct vnodeop_desc*)NULL, (int(*)())NULL } 83 }; 84 struct vnodeopv_desc lfs_vnodeop_opv_desc = 85 { &lfs_vnodeop_p, lfs_vnodeop_entries }; 86 87 int (**lfs_specop_p)(); 88 struct vnodeopv_entry_desc lfs_specop_entries[] = { 89 { &vop_default_desc, vn_default_error }, 90 { &vop_lookup_desc, spec_lookup }, /* lookup */ 91 { &vop_create_desc, spec_create }, /* create */ 92 { &vop_mknod_desc, spec_mknod }, /* mknod */ 93 { &vop_open_desc, spec_open }, /* open */ 94 { &vop_close_desc, ufsspec_close }, /* close */ 95 { &vop_access_desc, ufs_access }, /* access */ 96 { &vop_getattr_desc, lfs_getattr }, /* getattr */ 97 { &vop_setattr_desc, ufs_setattr }, /* setattr */ 98 { &vop_read_desc, ufsspec_read }, /* read */ 99 { &vop_write_desc, ufsspec_write }, /* write */ 100 { &vop_ioctl_desc, spec_ioctl }, /* ioctl */ 101 { &vop_select_desc, spec_select }, /* select */ 102 { &vop_mmap_desc, spec_mmap }, /* mmap */ 103 { &vop_fsync_desc, spec_fsync }, /* fsync */ 104 { &vop_seek_desc, spec_seek }, /* seek */ 105 { &vop_remove_desc, spec_remove }, /* remove */ 106 { &vop_link_desc, spec_link }, /* link */ 107 { &vop_rename_desc, spec_rename }, /* rename */ 108 { &vop_mkdir_desc, spec_mkdir }, /* mkdir */ 109 { &vop_rmdir_desc, spec_rmdir }, /* rmdir */ 110 { &vop_symlink_desc, spec_symlink }, /* symlink */ 111 { &vop_readdir_desc, spec_readdir }, /* readdir */ 112 { &vop_readlink_desc, spec_readlink }, /* readlink */ 113 { &vop_abortop_desc, spec_abortop }, /* abortop */ 114 { &vop_inactive_desc, ufs_inactive }, /* inactive */ 115 { &vop_reclaim_desc, ufs_reclaim }, /* reclaim */ 116 { &vop_lock_desc, ufs_lock }, /* lock */ 117 { &vop_unlock_desc, ufs_unlock }, /* unlock */ 118 { &vop_bmap_desc, spec_bmap }, /* bmap */ 119 { &vop_strategy_desc, spec_strategy }, /* strategy */ 120 { &vop_print_desc, ufs_print }, /* print */ 121 { &vop_islocked_desc, ufs_islocked }, /* islocked */ 122 { &vop_pathconf_desc, spec_pathconf }, /* pathconf */ 123 { &vop_advlock_desc, spec_advlock }, /* advlock */ 124 { &vop_blkatoff_desc, spec_blkatoff }, /* blkatoff */ 125 { &vop_valloc_desc, spec_valloc }, /* valloc */ 126 { &vop_vfree_desc, lfs_vfree }, /* vfree */ 127 { &vop_truncate_desc, spec_truncate }, /* truncate */ 128 { &vop_update_desc, lfs_update }, /* update */ 129 { &vop_bwrite_desc, lfs_bwrite }, /* bwrite */ 130 { (struct vnodeop_desc*)NULL, (int(*)())NULL } 131 }; 132 struct vnodeopv_desc lfs_specop_opv_desc = 133 { &lfs_specop_p, lfs_specop_entries }; 134 135 #ifdef FIFO 136 int (**lfs_fifoop_p)(); 137 struct vnodeopv_entry_desc lfs_fifoop_entries[] = { 138 { &vop_default_desc, vn_default_error }, 139 { &vop_lookup_desc, fifo_lookup }, /* lookup */ 140 { &vop_create_desc, fifo_create }, /* create */ 141 { &vop_mknod_desc, fifo_mknod }, /* mknod */ 142 { &vop_open_desc, fifo_open }, /* open */ 143 { &vop_close_desc, ufsfifo_close }, /* close */ 144 { &vop_access_desc, ufs_access }, /* access */ 145 { &vop_getattr_desc, lfs_getattr }, /* getattr */ 146 { &vop_setattr_desc, ufs_setattr }, /* setattr */ 147 { &vop_read_desc, ufsfifo_read }, /* read */ 148 { &vop_write_desc, ufsfifo_write }, /* write */ 149 { &vop_ioctl_desc, fifo_ioctl }, /* ioctl */ 150 { &vop_select_desc, fifo_select }, /* select */ 151 { &vop_mmap_desc, fifo_mmap }, /* mmap */ 152 { &vop_fsync_desc, fifo_fsync }, /* fsync */ 153 { &vop_seek_desc, fifo_seek }, /* seek */ 154 { &vop_remove_desc, fifo_remove }, /* remove */ 155 { &vop_link_desc, fifo_link }, /* link */ 156 { &vop_rename_desc, fifo_rename }, /* rename */ 157 { &vop_mkdir_desc, fifo_mkdir }, /* mkdir */ 158 { &vop_rmdir_desc, fifo_rmdir }, /* rmdir */ 159 { &vop_symlink_desc, fifo_symlink }, /* symlink */ 160 { &vop_readdir_desc, fifo_readdir }, /* readdir */ 161 { &vop_readlink_desc, fifo_readlink }, /* readlink */ 162 { &vop_abortop_desc, fifo_abortop }, /* abortop */ 163 { &vop_inactive_desc, ufs_inactive }, /* inactive */ 164 { &vop_reclaim_desc, ufs_reclaim }, /* reclaim */ 165 { &vop_lock_desc, ufs_lock }, /* lock */ 166 { &vop_unlock_desc, ufs_unlock }, /* unlock */ 167 { &vop_bmap_desc, fifo_bmap }, /* bmap */ 168 { &vop_strategy_desc, fifo_strategy }, /* strategy */ 169 { &vop_print_desc, ufs_print }, /* print */ 170 { &vop_islocked_desc, ufs_islocked }, /* islocked */ 171 { &vop_pathconf_desc, fifo_pathconf }, /* pathconf */ 172 { &vop_advlock_desc, fifo_advlock }, /* advlock */ 173 { &vop_blkatoff_desc, fifo_blkatoff }, /* blkatoff */ 174 { &vop_valloc_desc, fifo_valloc }, /* valloc */ 175 { &vop_vfree_desc, lfs_vfree }, /* vfree */ 176 { &vop_truncate_desc, fifo_truncate }, /* truncate */ 177 { &vop_update_desc, lfs_update }, /* update */ 178 { &vop_bwrite_desc, lfs_bwrite }, /* bwrite */ 179 { (struct vnodeop_desc*)NULL, (int(*)())NULL } 180 }; 181 struct vnodeopv_desc lfs_fifoop_opv_desc = 182 { &lfs_fifoop_p, lfs_fifoop_entries }; 183 #endif /* FIFO */ 184 185 #define LFS_READWRITE 186 #include <ufs/ufs/ufs_readwrite.c> 187 #undef LFS_READWRITE 188 189 /* 190 * Synch an open file. 191 */ 192 /* ARGSUSED */ 193 lfs_fsync(ap) 194 struct vop_fsync_args /* { 195 struct vnode *a_vp; 196 struct ucred *a_cred; 197 int a_waitfor; 198 struct proc *a_p; 199 } */ *ap; 200 { 201 struct timeval tv; 202 203 tv = time; 204 return (VOP_UPDATE(ap->a_vp, &tv, &tv, 205 ap->a_waitfor == MNT_WAIT ? LFS_SYNC : 0)); 206 } 207 208 /* 209 * These macros are used to bracket UFS directory ops, so that we can 210 * identify all the pages touched during directory ops which need to 211 * be ordered and flushed atomically, so that they may be recovered. 212 */ 213 #define SET_DIROP(fs) { \ 214 if ((fs)->lfs_writer) \ 215 tsleep(&(fs)->lfs_dirops, PRIBIO + 1, "lfs_dirop", 0); \ 216 ++(fs)->lfs_dirops; \ 217 (fs)->lfs_doifile = 1; \ 218 } 219 220 #define SET_ENDOP(fs) { \ 221 --(fs)->lfs_dirops; \ 222 if (!(fs)->lfs_dirops) \ 223 wakeup(&(fs)->lfs_writer); \ 224 } 225 226 #define MARK_VNODE(dvp) (dvp)->v_flag |= VDIROP 227 228 int 229 lfs_symlink(ap) 230 struct vop_symlink_args /* { 231 struct vnode *a_dvp; 232 struct vnode **a_vpp; 233 struct componentname *a_cnp; 234 struct vattr *a_vap; 235 char *a_target; 236 } */ *ap; 237 { 238 int ret; 239 240 SET_DIROP(VTOI(ap->a_dvp)->i_lfs); 241 MARK_VNODE(ap->a_dvp); 242 ret = ufs_symlink(ap); 243 SET_ENDOP(VTOI(ap->a_dvp)->i_lfs); 244 return (ret); 245 } 246 247 int 248 lfs_mknod(ap) 249 struct vop_mknod_args /* { 250 struct vnode *a_dvp; 251 struct vnode **a_vpp; 252 struct componentname *a_cnp; 253 struct vattr *a_vap; 254 } */ *ap; 255 { 256 int ret; 257 258 SET_DIROP(VTOI(ap->a_dvp)->i_lfs); 259 MARK_VNODE(ap->a_dvp); 260 ret = ufs_mknod(ap); 261 SET_ENDOP(VTOI(ap->a_dvp)->i_lfs); 262 return (ret); 263 } 264 265 int 266 lfs_create(ap) 267 struct vop_create_args /* { 268 struct vnode *a_dvp; 269 struct vnode **a_vpp; 270 struct componentname *a_cnp; 271 struct vattr *a_vap; 272 } */ *ap; 273 { 274 int ret; 275 276 SET_DIROP(VTOI(ap->a_dvp)->i_lfs); 277 MARK_VNODE(ap->a_dvp); 278 ret = ufs_create(ap); 279 SET_ENDOP(VTOI(ap->a_dvp)->i_lfs); 280 return (ret); 281 } 282 283 int 284 lfs_mkdir(ap) 285 struct vop_mkdir_args /* { 286 struct vnode *a_dvp; 287 struct vnode **a_vpp; 288 struct componentname *a_cnp; 289 struct vattr *a_vap; 290 } */ *ap; 291 { 292 int ret; 293 294 SET_DIROP(VTOI(ap->a_dvp)->i_lfs); 295 MARK_VNODE(ap->a_dvp); 296 ret = ufs_mkdir(ap); 297 SET_ENDOP(VTOI(ap->a_dvp)->i_lfs); 298 return (ret); 299 } 300 301 int 302 lfs_remove(ap) 303 struct vop_remove_args /* { 304 struct vnode *a_dvp; 305 struct vnode *a_vp; 306 struct componentname *a_cnp; 307 } */ *ap; 308 { 309 int ret; 310 311 SET_DIROP(VTOI(ap->a_dvp)->i_lfs); 312 MARK_VNODE(ap->a_dvp); 313 MARK_VNODE(ap->a_vp); 314 ret = ufs_remove(ap); 315 SET_ENDOP(VTOI(ap->a_dvp)->i_lfs); 316 return (ret); 317 } 318 319 int 320 lfs_rmdir(ap) 321 struct vop_rmdir_args /* { 322 struct vnodeop_desc *a_desc; 323 struct vnode *a_dvp; 324 struct vnode *a_vp; 325 struct componentname *a_cnp; 326 } */ *ap; 327 { 328 int ret; 329 330 SET_DIROP(VTOI(ap->a_dvp)->i_lfs); 331 MARK_VNODE(ap->a_dvp); 332 MARK_VNODE(ap->a_vp); 333 ret = ufs_rmdir(ap); 334 SET_ENDOP(VTOI(ap->a_dvp)->i_lfs); 335 return (ret); 336 } 337 338 int 339 lfs_link(ap) 340 struct vop_link_args /* { 341 struct vnode *a_vp; 342 struct vnode *a_tdvp; 343 struct componentname *a_cnp; 344 } */ *ap; 345 { 346 int ret; 347 348 SET_DIROP(VTOI(ap->a_vp)->i_lfs); 349 MARK_VNODE(ap->a_vp); 350 ret = ufs_link(ap); 351 SET_ENDOP(VTOI(ap->a_vp)->i_lfs); 352 return (ret); 353 } 354 355 int 356 lfs_rename(ap) 357 struct vop_rename_args /* { 358 struct vnode *a_fdvp; 359 struct vnode *a_fvp; 360 struct componentname *a_fcnp; 361 struct vnode *a_tdvp; 362 struct vnode *a_tvp; 363 struct componentname *a_tcnp; 364 } */ *ap; 365 { 366 int ret; 367 368 SET_DIROP(VTOI(ap->a_fdvp)->i_lfs); 369 MARK_VNODE(ap->a_fdvp); 370 MARK_VNODE(ap->a_tdvp); 371 ret = ufs_rename(ap); 372 SET_ENDOP(VTOI(ap->a_fdvp)->i_lfs); 373 return (ret); 374 } 375 /* XXX hack to avoid calling ITIMES in getattr */ 376 int 377 lfs_getattr(ap) 378 struct vop_getattr_args /* { 379 struct vnode *a_vp; 380 struct vattr *a_vap; 381 struct ucred *a_cred; 382 struct proc *a_p; 383 } */ *ap; 384 { 385 register struct vnode *vp = ap->a_vp; 386 register struct inode *ip = VTOI(vp); 387 register struct vattr *vap = ap->a_vap; 388 /* 389 * Copy from inode table 390 */ 391 vap->va_fsid = ip->i_dev; 392 vap->va_fileid = ip->i_number; 393 vap->va_mode = ip->i_mode & ~IFMT; 394 vap->va_nlink = ip->i_nlink; 395 vap->va_uid = ip->i_uid; 396 vap->va_gid = ip->i_gid; 397 vap->va_rdev = (dev_t)ip->i_rdev; 398 vap->va_size = ip->i_din.di_size; 399 vap->va_atime = ip->i_atime; 400 vap->va_mtime = ip->i_mtime; 401 vap->va_ctime = ip->i_ctime; 402 vap->va_flags = ip->i_flags; 403 vap->va_gen = ip->i_gen; 404 /* this doesn't belong here */ 405 if (vp->v_type == VBLK) 406 vap->va_blocksize = BLKDEV_IOSIZE; 407 else if (vp->v_type == VCHR) 408 vap->va_blocksize = MAXBSIZE; 409 else 410 vap->va_blocksize = vp->v_mount->mnt_stat.f_iosize; 411 vap->va_bytes = dbtob(ip->i_blocks); 412 vap->va_type = vp->v_type; 413 vap->va_filerev = ip->i_modrev; 414 return (0); 415 } 416 /* 417 * Close called 418 * 419 * XXX -- we were using ufs_close, but since it updates the 420 * times on the inode, we might need to bump the uinodes 421 * count. 422 */ 423 /* ARGSUSED */ 424 int 425 lfs_close(ap) 426 struct vop_close_args /* { 427 struct vnode *a_vp; 428 int a_fflag; 429 struct ucred *a_cred; 430 struct proc *a_p; 431 } */ *ap; 432 { 433 register struct vnode *vp = ap->a_vp; 434 register struct inode *ip = VTOI(vp); 435 int mod; 436 437 if (vp->v_usecount > 1 && !(ip->i_flag & IN_LOCKED)) { 438 mod = ip->i_flag & IN_MODIFIED; 439 ITIMES(ip, &time, &time); 440 if (!mod && ip->i_flag & IN_MODIFIED) 441 ip->i_lfs->lfs_uinodes++; 442 } 443 return (0); 444 } 445 446