1 /* 2 * Copyright (c) 1982, 1986, 1989, 1993 3 * The Regents of the University of California. All rights reserved. 4 * 5 * %sccs.include.redist.c% 6 * 7 * @(#)ffs_vnops.c 8.12 (Berkeley) 01/03/95 8 */ 9 10 #include <sys/param.h> 11 #include <sys/systm.h> 12 #include <sys/resourcevar.h> 13 #include <sys/kernel.h> 14 #include <sys/file.h> 15 #include <sys/stat.h> 16 #include <sys/buf.h> 17 #include <sys/proc.h> 18 #include <sys/conf.h> 19 #include <sys/mount.h> 20 #include <sys/vnode.h> 21 #include <sys/malloc.h> 22 23 #include <vm/vm.h> 24 25 #include <miscfs/specfs/specdev.h> 26 #include <miscfs/fifofs/fifo.h> 27 28 #include <ufs/ufs/lockf.h> 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/ffs/fs.h> 36 #include <ufs/ffs/ffs_extern.h> 37 38 /* Global vfs data structures for ufs. */ 39 int (**ffs_vnodeop_p)(); 40 struct vnodeopv_entry_desc ffs_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_whiteout_desc, ufs_whiteout }, /* whiteout */ 45 { &vop_mknod_desc, ufs_mknod }, /* mknod */ 46 { &vop_open_desc, ufs_open }, /* open */ 47 { &vop_close_desc, ufs_close }, /* close */ 48 { &vop_access_desc, ufs_access }, /* access */ 49 { &vop_getattr_desc, ufs_getattr }, /* getattr */ 50 { &vop_setattr_desc, ufs_setattr }, /* setattr */ 51 { &vop_read_desc, ffs_read }, /* read */ 52 { &vop_write_desc, ffs_write }, /* write */ 53 { &vop_lease_desc, ufs_lease_check }, /* lease */ 54 { &vop_ioctl_desc, ufs_ioctl }, /* ioctl */ 55 { &vop_select_desc, ufs_select }, /* select */ 56 { &vop_mmap_desc, ufs_mmap }, /* mmap */ 57 { &vop_fsync_desc, ffs_fsync }, /* fsync */ 58 { &vop_seek_desc, ufs_seek }, /* seek */ 59 { &vop_remove_desc, ufs_remove }, /* remove */ 60 { &vop_link_desc, ufs_link }, /* link */ 61 { &vop_rename_desc, ufs_rename }, /* rename */ 62 { &vop_mkdir_desc, ufs_mkdir }, /* mkdir */ 63 { &vop_rmdir_desc, ufs_rmdir }, /* rmdir */ 64 { &vop_symlink_desc, ufs_symlink }, /* symlink */ 65 { &vop_readdir_desc, ufs_readdir }, /* readdir */ 66 { &vop_readlink_desc, ufs_readlink }, /* readlink */ 67 { &vop_abortop_desc, ufs_abortop }, /* abortop */ 68 { &vop_inactive_desc, ufs_inactive }, /* inactive */ 69 { &vop_reclaim_desc, ffs_reclaim }, /* reclaim */ 70 { &vop_lock_desc, ufs_lock }, /* lock */ 71 { &vop_unlock_desc, ufs_unlock }, /* unlock */ 72 { &vop_bmap_desc, ufs_bmap }, /* bmap */ 73 { &vop_strategy_desc, ufs_strategy }, /* strategy */ 74 { &vop_print_desc, ufs_print }, /* print */ 75 { &vop_islocked_desc, ufs_islocked }, /* islocked */ 76 { &vop_pathconf_desc, ufs_pathconf }, /* pathconf */ 77 { &vop_advlock_desc, ufs_advlock }, /* advlock */ 78 { &vop_blkatoff_desc, ffs_blkatoff }, /* blkatoff */ 79 { &vop_valloc_desc, ffs_valloc }, /* valloc */ 80 { &vop_reallocblks_desc, ffs_reallocblks }, /* reallocblks */ 81 { &vop_vfree_desc, ffs_vfree }, /* vfree */ 82 { &vop_truncate_desc, ffs_truncate }, /* truncate */ 83 { &vop_update_desc, ffs_update }, /* update */ 84 { &vop_bwrite_desc, vn_bwrite }, 85 { (struct vnodeop_desc*)NULL, (int(*)())NULL } 86 }; 87 struct vnodeopv_desc ffs_vnodeop_opv_desc = 88 { &ffs_vnodeop_p, ffs_vnodeop_entries }; 89 90 int (**ffs_specop_p)(); 91 struct vnodeopv_entry_desc ffs_specop_entries[] = { 92 { &vop_default_desc, vn_default_error }, 93 { &vop_lookup_desc, spec_lookup }, /* lookup */ 94 { &vop_create_desc, spec_create }, /* create */ 95 { &vop_mknod_desc, spec_mknod }, /* mknod */ 96 { &vop_open_desc, spec_open }, /* open */ 97 { &vop_close_desc, ufsspec_close }, /* close */ 98 { &vop_access_desc, ufs_access }, /* access */ 99 { &vop_getattr_desc, ufs_getattr }, /* getattr */ 100 { &vop_setattr_desc, ufs_setattr }, /* setattr */ 101 { &vop_read_desc, ufsspec_read }, /* read */ 102 { &vop_write_desc, ufsspec_write }, /* write */ 103 { &vop_lease_desc, spec_lease_check }, /* lease */ 104 { &vop_ioctl_desc, spec_ioctl }, /* ioctl */ 105 { &vop_select_desc, spec_select }, /* select */ 106 { &vop_mmap_desc, spec_mmap }, /* mmap */ 107 { &vop_fsync_desc, ffs_fsync }, /* fsync */ 108 { &vop_seek_desc, spec_seek }, /* seek */ 109 { &vop_remove_desc, spec_remove }, /* remove */ 110 { &vop_link_desc, spec_link }, /* link */ 111 { &vop_rename_desc, spec_rename }, /* rename */ 112 { &vop_mkdir_desc, spec_mkdir }, /* mkdir */ 113 { &vop_rmdir_desc, spec_rmdir }, /* rmdir */ 114 { &vop_symlink_desc, spec_symlink }, /* symlink */ 115 { &vop_readdir_desc, spec_readdir }, /* readdir */ 116 { &vop_readlink_desc, spec_readlink }, /* readlink */ 117 { &vop_abortop_desc, spec_abortop }, /* abortop */ 118 { &vop_inactive_desc, ufs_inactive }, /* inactive */ 119 { &vop_reclaim_desc, ffs_reclaim }, /* reclaim */ 120 { &vop_lock_desc, ufs_lock }, /* lock */ 121 { &vop_unlock_desc, ufs_unlock }, /* unlock */ 122 { &vop_bmap_desc, spec_bmap }, /* bmap */ 123 { &vop_strategy_desc, spec_strategy }, /* strategy */ 124 { &vop_print_desc, ufs_print }, /* print */ 125 { &vop_islocked_desc, ufs_islocked }, /* islocked */ 126 { &vop_pathconf_desc, spec_pathconf }, /* pathconf */ 127 { &vop_advlock_desc, spec_advlock }, /* advlock */ 128 { &vop_blkatoff_desc, spec_blkatoff }, /* blkatoff */ 129 { &vop_valloc_desc, spec_valloc }, /* valloc */ 130 { &vop_reallocblks_desc, spec_reallocblks }, /* reallocblks */ 131 { &vop_vfree_desc, ffs_vfree }, /* vfree */ 132 { &vop_truncate_desc, spec_truncate }, /* truncate */ 133 { &vop_update_desc, ffs_update }, /* update */ 134 { &vop_bwrite_desc, vn_bwrite }, 135 { (struct vnodeop_desc*)NULL, (int(*)())NULL } 136 }; 137 struct vnodeopv_desc ffs_specop_opv_desc = 138 { &ffs_specop_p, ffs_specop_entries }; 139 140 #ifdef FIFO 141 int (**ffs_fifoop_p)(); 142 struct vnodeopv_entry_desc ffs_fifoop_entries[] = { 143 { &vop_default_desc, vn_default_error }, 144 { &vop_lookup_desc, fifo_lookup }, /* lookup */ 145 { &vop_create_desc, fifo_create }, /* create */ 146 { &vop_mknod_desc, fifo_mknod }, /* mknod */ 147 { &vop_open_desc, fifo_open }, /* open */ 148 { &vop_close_desc, ufsfifo_close }, /* close */ 149 { &vop_access_desc, ufs_access }, /* access */ 150 { &vop_getattr_desc, ufs_getattr }, /* getattr */ 151 { &vop_setattr_desc, ufs_setattr }, /* setattr */ 152 { &vop_read_desc, ufsfifo_read }, /* read */ 153 { &vop_write_desc, ufsfifo_write }, /* write */ 154 { &vop_lease_desc, fifo_lease_check }, /* lease */ 155 { &vop_ioctl_desc, fifo_ioctl }, /* ioctl */ 156 { &vop_select_desc, fifo_select }, /* select */ 157 { &vop_mmap_desc, fifo_mmap }, /* mmap */ 158 { &vop_fsync_desc, ffs_fsync }, /* fsync */ 159 { &vop_seek_desc, fifo_seek }, /* seek */ 160 { &vop_remove_desc, fifo_remove }, /* remove */ 161 { &vop_link_desc, fifo_link }, /* link */ 162 { &vop_rename_desc, fifo_rename }, /* rename */ 163 { &vop_mkdir_desc, fifo_mkdir }, /* mkdir */ 164 { &vop_rmdir_desc, fifo_rmdir }, /* rmdir */ 165 { &vop_symlink_desc, fifo_symlink }, /* symlink */ 166 { &vop_readdir_desc, fifo_readdir }, /* readdir */ 167 { &vop_readlink_desc, fifo_readlink }, /* readlink */ 168 { &vop_abortop_desc, fifo_abortop }, /* abortop */ 169 { &vop_inactive_desc, ufs_inactive }, /* inactive */ 170 { &vop_reclaim_desc, ffs_reclaim }, /* reclaim */ 171 { &vop_lock_desc, ufs_lock }, /* lock */ 172 { &vop_unlock_desc, ufs_unlock }, /* unlock */ 173 { &vop_bmap_desc, fifo_bmap }, /* bmap */ 174 { &vop_strategy_desc, fifo_strategy }, /* strategy */ 175 { &vop_print_desc, ufs_print }, /* print */ 176 { &vop_islocked_desc, ufs_islocked }, /* islocked */ 177 { &vop_pathconf_desc, fifo_pathconf }, /* pathconf */ 178 { &vop_advlock_desc, fifo_advlock }, /* advlock */ 179 { &vop_blkatoff_desc, fifo_blkatoff }, /* blkatoff */ 180 { &vop_valloc_desc, fifo_valloc }, /* valloc */ 181 { &vop_reallocblks_desc, fifo_reallocblks }, /* reallocblks */ 182 { &vop_vfree_desc, ffs_vfree }, /* vfree */ 183 { &vop_truncate_desc, fifo_truncate }, /* truncate */ 184 { &vop_update_desc, ffs_update }, /* update */ 185 { &vop_bwrite_desc, vn_bwrite }, 186 { (struct vnodeop_desc*)NULL, (int(*)())NULL } 187 }; 188 struct vnodeopv_desc ffs_fifoop_opv_desc = 189 { &ffs_fifoop_p, ffs_fifoop_entries }; 190 #endif /* FIFO */ 191 192 #ifdef DEBUG 193 /* 194 * Enabling cluster read/write operations. 195 */ 196 #include <sys/sysctl.h> 197 int doclusterread = 1; 198 struct ctldebug debug11 = { "doclusterread", &doclusterread }; 199 int doclusterwrite = 1; 200 struct ctldebug debug12 = { "doclusterwrite", &doclusterwrite }; 201 #else 202 /* XXX for ufs_readwrite */ 203 #define doclusterread 1 204 #define doclusterwrite 1 205 #endif 206 207 #include <ufs/ufs/ufs_readwrite.c> 208 209 /* 210 * Synch an open file. 211 */ 212 /* ARGSUSED */ 213 int 214 ffs_fsync(ap) 215 struct vop_fsync_args /* { 216 struct vnode *a_vp; 217 struct ucred *a_cred; 218 int a_waitfor; 219 struct proc *a_p; 220 } */ *ap; 221 { 222 register struct vnode *vp = ap->a_vp; 223 register struct buf *bp; 224 struct timeval tv; 225 struct buf *nbp; 226 int s; 227 228 /* 229 * Flush all dirty buffers associated with a vnode. 230 */ 231 loop: 232 s = splbio(); 233 for (bp = vp->v_dirtyblkhd.lh_first; bp; bp = nbp) { 234 nbp = bp->b_vnbufs.le_next; 235 if ((bp->b_flags & B_BUSY)) 236 continue; 237 if ((bp->b_flags & B_DELWRI) == 0) 238 panic("ffs_fsync: not dirty"); 239 bremfree(bp); 240 bp->b_flags |= B_BUSY; 241 splx(s); 242 /* 243 * Wait for I/O associated with indirect blocks to complete, 244 * since there is no way to quickly wait for them below. 245 */ 246 if (bp->b_vp == vp || ap->a_waitfor == MNT_NOWAIT) 247 (void) bawrite(bp); 248 else 249 (void) bwrite(bp); 250 goto loop; 251 } 252 if (ap->a_waitfor == MNT_WAIT) { 253 while (vp->v_numoutput) { 254 vp->v_flag |= VBWAIT; 255 sleep((caddr_t)&vp->v_numoutput, PRIBIO + 1); 256 } 257 #ifdef DIAGNOSTIC 258 if (vp->v_dirtyblkhd.lh_first) { 259 vprint("ffs_fsync: dirty", vp); 260 goto loop; 261 } 262 #endif 263 } 264 splx(s); 265 tv = time; 266 return (VOP_UPDATE(ap->a_vp, &tv, &tv, ap->a_waitfor == MNT_WAIT)); 267 } 268 269 /* 270 * Reclaim an inode so that it can be used for other purposes. 271 */ 272 int 273 ffs_reclaim(ap) 274 struct vop_reclaim_args /* { 275 struct vnode *a_vp; 276 } */ *ap; 277 { 278 register struct vnode *vp = ap->a_vp; 279 int error; 280 281 if (error = ufs_reclaim(vp)) 282 return (error); 283 FREE(vp->v_data, VFSTOUFS(vp->v_mount)->um_devvp->v_tag == VT_MFS ? 284 M_MFSNODE : M_FFSNODE); 285 vp->v_data = NULL; 286 return (0); 287 } 288