1 /* 2 * Copyright (c) 1982, 1986, 1989, 1993 3 * The Regents of the University of California. All rights reserved. 4 * 5 * Redistribution and use in source and binary forms, with or without 6 * modification, are permitted provided that the following conditions 7 * are met: 8 * 1. Redistributions of source code must retain the above copyright 9 * notice, this list of conditions and the following disclaimer. 10 * 2. Redistributions in binary form must reproduce the above copyright 11 * notice, this list of conditions and the following disclaimer in the 12 * documentation and/or other materials provided with the distribution. 13 * 3. All advertising materials mentioning features or use of this software 14 * must display the following acknowledgement: 15 * This product includes software developed by the University of 16 * California, Berkeley and its contributors. 17 * 4. Neither the name of the University nor the names of its contributors 18 * may be used to endorse or promote products derived from this software 19 * without specific prior written permission. 20 * 21 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND 22 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 23 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 24 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE 25 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 26 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 27 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 28 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 29 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 30 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 31 * SUCH DAMAGE. 32 * 33 * @(#)ffs_vnops.c 8.7 (Berkeley) 2/3/94 34 * $Id: ffs_vnops.c,v 1.17 1995/11/09 08:14:01 bde Exp $ 35 */ 36 37 #include <sys/param.h> 38 #include <sys/systm.h> 39 #include <sys/resourcevar.h> 40 #include <sys/signalvar.h> 41 #include <sys/kernel.h> 42 #include <sys/file.h> 43 #include <sys/stat.h> 44 #include <sys/buf.h> 45 #include <sys/proc.h> 46 #include <sys/conf.h> 47 #include <sys/mount.h> 48 #include <sys/vnode.h> 49 #include <sys/malloc.h> 50 #include <sys/lockf.h> 51 52 #include <vm/vm.h> 53 #include <vm/vm_page.h> 54 #include <vm/vm_object.h> 55 56 #include <miscfs/specfs/specdev.h> 57 #include <miscfs/fifofs/fifo.h> 58 59 #include <ufs/ufs/quota.h> 60 #include <ufs/ufs/inode.h> 61 #include <ufs/ufs/dir.h> 62 #include <ufs/ufs/ufs_extern.h> 63 64 #include <ufs/ffs/fs.h> 65 #include <ufs/ffs/ffs_extern.h> 66 67 /* Global vfs data structures for ufs. */ 68 vop_t **ffs_vnodeop_p; 69 struct vnodeopv_entry_desc ffs_vnodeop_entries[] = { 70 { &vop_default_desc, (vop_t *)vn_default_error }, 71 { &vop_lookup_desc, (vop_t *)ufs_lookup }, /* lookup */ 72 { &vop_create_desc, (vop_t *)ufs_create }, /* create */ 73 { &vop_mknod_desc, (vop_t *)ufs_mknod }, /* mknod */ 74 { &vop_open_desc, (vop_t *)ufs_open }, /* open */ 75 { &vop_close_desc, (vop_t *)ufs_close }, /* close */ 76 { &vop_access_desc, (vop_t *)ufs_access }, /* access */ 77 { &vop_getattr_desc, (vop_t *)ufs_getattr }, /* getattr */ 78 { &vop_setattr_desc, (vop_t *)ufs_setattr }, /* setattr */ 79 { &vop_read_desc, (vop_t *)ffs_read }, /* read */ 80 { &vop_write_desc, (vop_t *)ffs_write }, /* write */ 81 { &vop_ioctl_desc, (vop_t *)ufs_ioctl }, /* ioctl */ 82 { &vop_select_desc, (vop_t *)ufs_select }, /* select */ 83 { &vop_mmap_desc, (vop_t *)ufs_mmap }, /* mmap */ 84 { &vop_fsync_desc, (vop_t *)ffs_fsync }, /* fsync */ 85 { &vop_seek_desc, (vop_t *)ufs_seek }, /* seek */ 86 { &vop_remove_desc, (vop_t *)ufs_remove }, /* remove */ 87 { &vop_link_desc, (vop_t *)ufs_link }, /* link */ 88 { &vop_rename_desc, (vop_t *)ufs_rename }, /* rename */ 89 { &vop_mkdir_desc, (vop_t *)ufs_mkdir }, /* mkdir */ 90 { &vop_rmdir_desc, (vop_t *)ufs_rmdir }, /* rmdir */ 91 { &vop_symlink_desc, (vop_t *)ufs_symlink }, /* symlink */ 92 { &vop_readdir_desc, (vop_t *)ufs_readdir }, /* readdir */ 93 { &vop_readlink_desc, (vop_t *)ufs_readlink }, /* readlink */ 94 { &vop_abortop_desc, (vop_t *)ufs_abortop }, /* abortop */ 95 { &vop_inactive_desc, (vop_t *)ufs_inactive }, /* inactive */ 96 { &vop_reclaim_desc, (vop_t *)ufs_reclaim }, /* reclaim */ 97 { &vop_lock_desc, (vop_t *)ufs_lock }, /* lock */ 98 { &vop_unlock_desc, (vop_t *)ufs_unlock }, /* unlock */ 99 { &vop_bmap_desc, (vop_t *)ufs_bmap }, /* bmap */ 100 { &vop_strategy_desc, (vop_t *)ufs_strategy }, /* strategy */ 101 { &vop_print_desc, (vop_t *)ufs_print }, /* print */ 102 { &vop_islocked_desc, (vop_t *)ufs_islocked }, /* islocked */ 103 { &vop_pathconf_desc, (vop_t *)ufs_pathconf }, /* pathconf */ 104 { &vop_advlock_desc, (vop_t *)ufs_advlock }, /* advlock */ 105 { &vop_blkatoff_desc, (vop_t *)ffs_blkatoff }, /* blkatoff */ 106 { &vop_valloc_desc, (vop_t *)ffs_valloc }, /* valloc */ 107 { &vop_reallocblks_desc, (vop_t *)ffs_reallocblks }, /* reallocblks */ 108 { &vop_vfree_desc, (vop_t *)ffs_vfree }, /* vfree */ 109 { &vop_truncate_desc, (vop_t *)ffs_truncate }, /* truncate */ 110 { &vop_update_desc, (vop_t *)ffs_update }, /* update */ 111 { &vop_getpages_desc, (vop_t *)ffs_getpages}, /* getpages */ 112 { &vop_bwrite_desc, (vop_t *)vn_bwrite }, /* bwrite */ 113 { NULL, NULL } 114 }; 115 struct vnodeopv_desc ffs_vnodeop_opv_desc = 116 { &ffs_vnodeop_p, ffs_vnodeop_entries }; 117 118 vop_t **ffs_specop_p; 119 struct vnodeopv_entry_desc ffs_specop_entries[] = { 120 { &vop_default_desc, (vop_t *)vn_default_error }, 121 { &vop_lookup_desc, (vop_t *)spec_lookup }, /* lookup */ 122 { &vop_create_desc, (vop_t *)spec_create }, /* create */ 123 { &vop_mknod_desc, (vop_t *)spec_mknod }, /* mknod */ 124 { &vop_open_desc, (vop_t *)spec_open }, /* open */ 125 { &vop_close_desc, (vop_t *)ufsspec_close }, /* close */ 126 { &vop_access_desc, (vop_t *)ufs_access }, /* access */ 127 { &vop_getattr_desc, (vop_t *)ufs_getattr }, /* getattr */ 128 { &vop_setattr_desc, (vop_t *)ufs_setattr }, /* setattr */ 129 { &vop_read_desc, (vop_t *)ufsspec_read }, /* read */ 130 { &vop_write_desc, (vop_t *)ufsspec_write }, /* write */ 131 { &vop_ioctl_desc, (vop_t *)spec_ioctl }, /* ioctl */ 132 { &vop_select_desc, (vop_t *)spec_select }, /* select */ 133 { &vop_mmap_desc, (vop_t *)spec_mmap }, /* mmap */ 134 { &vop_fsync_desc, (vop_t *)ffs_fsync }, /* fsync */ 135 { &vop_seek_desc, (vop_t *)spec_seek }, /* seek */ 136 { &vop_remove_desc, (vop_t *)spec_remove }, /* remove */ 137 { &vop_link_desc, (vop_t *)spec_link }, /* link */ 138 { &vop_rename_desc, (vop_t *)spec_rename }, /* rename */ 139 { &vop_mkdir_desc, (vop_t *)spec_mkdir }, /* mkdir */ 140 { &vop_rmdir_desc, (vop_t *)spec_rmdir }, /* rmdir */ 141 { &vop_symlink_desc, (vop_t *)spec_symlink }, /* symlink */ 142 { &vop_readdir_desc, (vop_t *)spec_readdir }, /* readdir */ 143 { &vop_readlink_desc, (vop_t *)spec_readlink }, /* readlink */ 144 { &vop_abortop_desc, (vop_t *)spec_abortop }, /* abortop */ 145 { &vop_inactive_desc, (vop_t *)ufs_inactive }, /* inactive */ 146 { &vop_reclaim_desc, (vop_t *)ufs_reclaim }, /* reclaim */ 147 { &vop_lock_desc, (vop_t *)ufs_lock }, /* lock */ 148 { &vop_unlock_desc, (vop_t *)ufs_unlock }, /* unlock */ 149 { &vop_bmap_desc, (vop_t *)spec_bmap }, /* bmap */ 150 { &vop_strategy_desc, (vop_t *)spec_strategy }, /* strategy */ 151 { &vop_print_desc, (vop_t *)ufs_print }, /* print */ 152 { &vop_islocked_desc, (vop_t *)ufs_islocked }, /* islocked */ 153 { &vop_pathconf_desc, (vop_t *)spec_pathconf }, /* pathconf */ 154 { &vop_advlock_desc, (vop_t *)spec_advlock }, /* advlock */ 155 { &vop_blkatoff_desc, (vop_t *)spec_blkatoff }, /* blkatoff */ 156 { &vop_valloc_desc, (vop_t *)spec_valloc }, /* valloc */ 157 { &vop_reallocblks_desc, (vop_t *)spec_reallocblks }, /* reallocblks */ 158 { &vop_vfree_desc, (vop_t *)ffs_vfree }, /* vfree */ 159 { &vop_truncate_desc, (vop_t *)spec_truncate }, /* truncate */ 160 { &vop_update_desc, (vop_t *)ffs_update }, /* update */ 161 { &vop_getpages_desc, (vop_t *)spec_getpages}, /* getpages */ 162 { &vop_bwrite_desc, (vop_t *)vn_bwrite }, /* bwrite */ 163 { NULL, NULL } 164 }; 165 struct vnodeopv_desc ffs_specop_opv_desc = 166 { &ffs_specop_p, ffs_specop_entries }; 167 168 vop_t **ffs_fifoop_p; 169 struct vnodeopv_entry_desc ffs_fifoop_entries[] = { 170 { &vop_default_desc, (vop_t *)vn_default_error }, 171 { &vop_lookup_desc, (vop_t *)fifo_lookup }, /* lookup */ 172 { &vop_create_desc, (vop_t *)fifo_create }, /* create */ 173 { &vop_mknod_desc, (vop_t *)fifo_mknod }, /* mknod */ 174 { &vop_open_desc, (vop_t *)fifo_open }, /* open */ 175 { &vop_close_desc, (vop_t *)ufsfifo_close }, /* close */ 176 { &vop_access_desc, (vop_t *)ufs_access }, /* access */ 177 { &vop_getattr_desc, (vop_t *)ufs_getattr }, /* getattr */ 178 { &vop_setattr_desc, (vop_t *)ufs_setattr }, /* setattr */ 179 { &vop_read_desc, (vop_t *)ufsfifo_read }, /* read */ 180 { &vop_write_desc, (vop_t *)ufsfifo_write }, /* write */ 181 { &vop_ioctl_desc, (vop_t *)fifo_ioctl }, /* ioctl */ 182 { &vop_select_desc, (vop_t *)fifo_select }, /* select */ 183 { &vop_mmap_desc, (vop_t *)fifo_mmap }, /* mmap */ 184 { &vop_fsync_desc, (vop_t *)ffs_fsync }, /* fsync */ 185 { &vop_seek_desc, (vop_t *)fifo_seek }, /* seek */ 186 { &vop_remove_desc, (vop_t *)fifo_remove }, /* remove */ 187 { &vop_link_desc, (vop_t *)fifo_link }, /* link */ 188 { &vop_rename_desc, (vop_t *)fifo_rename }, /* rename */ 189 { &vop_mkdir_desc, (vop_t *)fifo_mkdir }, /* mkdir */ 190 { &vop_rmdir_desc, (vop_t *)fifo_rmdir }, /* rmdir */ 191 { &vop_symlink_desc, (vop_t *)fifo_symlink }, /* symlink */ 192 { &vop_readdir_desc, (vop_t *)fifo_readdir }, /* readdir */ 193 { &vop_readlink_desc, (vop_t *)fifo_readlink }, /* readlink */ 194 { &vop_abortop_desc, (vop_t *)fifo_abortop }, /* abortop */ 195 { &vop_inactive_desc, (vop_t *)ufs_inactive }, /* inactive */ 196 { &vop_reclaim_desc, (vop_t *)ufs_reclaim }, /* reclaim */ 197 { &vop_lock_desc, (vop_t *)ufs_lock }, /* lock */ 198 { &vop_unlock_desc, (vop_t *)ufs_unlock }, /* unlock */ 199 { &vop_bmap_desc, (vop_t *)fifo_bmap }, /* bmap */ 200 { &vop_strategy_desc, (vop_t *)fifo_strategy }, /* strategy */ 201 { &vop_print_desc, (vop_t *)ufs_print }, /* print */ 202 { &vop_islocked_desc, (vop_t *)ufs_islocked }, /* islocked */ 203 { &vop_pathconf_desc, (vop_t *)fifo_pathconf }, /* pathconf */ 204 { &vop_advlock_desc, (vop_t *)fifo_advlock }, /* advlock */ 205 { &vop_blkatoff_desc, (vop_t *)fifo_blkatoff }, /* blkatoff */ 206 { &vop_valloc_desc, (vop_t *)fifo_valloc }, /* valloc */ 207 { &vop_reallocblks_desc, (vop_t *)fifo_reallocblks }, /* reallocblks */ 208 { &vop_vfree_desc, (vop_t *)ffs_vfree }, /* vfree */ 209 { &vop_truncate_desc, (vop_t *)fifo_truncate }, /* truncate */ 210 { &vop_update_desc, (vop_t *)ffs_update }, /* update */ 211 { &vop_bwrite_desc, (vop_t *)vn_bwrite }, /* bwrite */ 212 { NULL, NULL } 213 }; 214 struct vnodeopv_desc ffs_fifoop_opv_desc = 215 { &ffs_fifoop_p, ffs_fifoop_entries }; 216 217 VNODEOP_SET(ffs_vnodeop_opv_desc); 218 VNODEOP_SET(ffs_specop_opv_desc); 219 VNODEOP_SET(ffs_fifoop_opv_desc); 220 221 #ifdef DEBUG 222 /* 223 * Enabling cluster read/write operations. 224 */ 225 #include <sys/sysctl.h> 226 int doclusterread = 1; 227 SYSCTL_INT(_debug, 11, doclusterread, CTLFLAG_RW, &doclusterread, 0, ""); 228 int doclusterwrite = 1; 229 SYSCTL_INT(_debug, 12, doclusterwrite, CTLFLAG_RW, &doclusterwrite, 0, ""); 230 #else 231 /* XXX for ufs_readwrite */ 232 #define doclusterread 1 233 #define doclusterwrite 1 234 #endif 235 236 #include <ufs/ufs/ufs_readwrite.c> 237 238 /* 239 * Synch an open file. 240 */ 241 /* ARGSUSED */ 242 int 243 ffs_fsync(ap) 244 struct vop_fsync_args /* { 245 struct vnode *a_vp; 246 struct ucred *a_cred; 247 int a_waitfor; 248 struct proc *a_p; 249 } */ *ap; 250 { 251 register struct vnode *vp = ap->a_vp; 252 register struct buf *bp; 253 struct timeval tv; 254 struct buf *nbp; 255 int pass; 256 int s; 257 258 pass = 0; 259 /* 260 * Flush all dirty buffers associated with a vnode. 261 */ 262 loop: 263 s = splbio(); 264 for (bp = vp->v_dirtyblkhd.lh_first; bp; bp = nbp) { 265 nbp = bp->b_vnbufs.le_next; 266 if ((bp->b_flags & B_BUSY) || (pass == 0 && (bp->b_blkno < 0))) 267 continue; 268 if ((bp->b_flags & B_DELWRI) == 0) 269 panic("ffs_fsync: not dirty"); 270 271 if (bp->b_vp != vp || ap->a_waitfor != MNT_NOWAIT) { 272 273 bremfree(bp); 274 bp->b_flags |= B_BUSY; 275 splx(s); 276 /* 277 * Wait for I/O associated with indirect blocks to complete, 278 * since there is no way to quickly wait for them below. 279 */ 280 if (bp->b_vp == vp || ap->a_waitfor == MNT_NOWAIT) 281 (void) bawrite(bp); 282 else 283 (void) bwrite(bp); 284 } else { 285 vfs_bio_awrite(bp); 286 splx(s); 287 } 288 goto loop; 289 } 290 splx(s); 291 292 if (pass == 0) { 293 pass = 1; 294 goto loop; 295 } 296 297 if (ap->a_waitfor == MNT_WAIT) { 298 s = splbio(); 299 while (vp->v_numoutput) { 300 vp->v_flag |= VBWAIT; 301 (void) tsleep((caddr_t)&vp->v_numoutput, PRIBIO + 1, "ffsfsn", 0); 302 } 303 splx(s); 304 #ifdef DIAGNOSTIC 305 if (vp->v_dirtyblkhd.lh_first) { 306 vprint("ffs_fsync: dirty", vp); 307 goto loop; 308 } 309 #endif 310 } 311 312 tv = time; 313 return (VOP_UPDATE(ap->a_vp, &tv, &tv, ap->a_waitfor == MNT_WAIT)); 314 } 315