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 8.15 (Berkeley) 05/14/95 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_revoke_desc, ufs_revoke }, /* revoke */ 57 { &vop_mmap_desc, ufs_mmap }, /* mmap */ 58 { &vop_fsync_desc, ffs_fsync }, /* fsync */ 59 { &vop_seek_desc, ufs_seek }, /* seek */ 60 { &vop_remove_desc, ufs_remove }, /* remove */ 61 { &vop_link_desc, ufs_link }, /* link */ 62 { &vop_rename_desc, ufs_rename }, /* rename */ 63 { &vop_mkdir_desc, ufs_mkdir }, /* mkdir */ 64 { &vop_rmdir_desc, ufs_rmdir }, /* rmdir */ 65 { &vop_symlink_desc, ufs_symlink }, /* symlink */ 66 { &vop_readdir_desc, ufs_readdir }, /* readdir */ 67 { &vop_readlink_desc, ufs_readlink }, /* readlink */ 68 { &vop_abortop_desc, ufs_abortop }, /* abortop */ 69 { &vop_inactive_desc, ufs_inactive }, /* inactive */ 70 { &vop_reclaim_desc, ffs_reclaim }, /* reclaim */ 71 { &vop_lock_desc, ufs_lock }, /* lock */ 72 { &vop_unlock_desc, ufs_unlock }, /* unlock */ 73 { &vop_bmap_desc, ufs_bmap }, /* bmap */ 74 { &vop_strategy_desc, ufs_strategy }, /* strategy */ 75 { &vop_print_desc, ufs_print }, /* print */ 76 { &vop_islocked_desc, ufs_islocked }, /* islocked */ 77 { &vop_pathconf_desc, ufs_pathconf }, /* pathconf */ 78 { &vop_advlock_desc, ufs_advlock }, /* advlock */ 79 { &vop_blkatoff_desc, ffs_blkatoff }, /* blkatoff */ 80 { &vop_valloc_desc, ffs_valloc }, /* valloc */ 81 { &vop_reallocblks_desc, ffs_reallocblks }, /* reallocblks */ 82 { &vop_vfree_desc, ffs_vfree }, /* vfree */ 83 { &vop_truncate_desc, ffs_truncate }, /* truncate */ 84 { &vop_update_desc, ffs_update }, /* update */ 85 { &vop_bwrite_desc, vn_bwrite }, 86 { (struct vnodeop_desc*)NULL, (int(*)())NULL } 87 }; 88 struct vnodeopv_desc ffs_vnodeop_opv_desc = 89 { &ffs_vnodeop_p, ffs_vnodeop_entries }; 90 91 int (**ffs_specop_p)(); 92 struct vnodeopv_entry_desc ffs_specop_entries[] = { 93 { &vop_default_desc, vn_default_error }, 94 { &vop_lookup_desc, spec_lookup }, /* lookup */ 95 { &vop_create_desc, spec_create }, /* create */ 96 { &vop_mknod_desc, spec_mknod }, /* mknod */ 97 { &vop_open_desc, spec_open }, /* open */ 98 { &vop_close_desc, ufsspec_close }, /* close */ 99 { &vop_access_desc, ufs_access }, /* access */ 100 { &vop_getattr_desc, ufs_getattr }, /* getattr */ 101 { &vop_setattr_desc, ufs_setattr }, /* setattr */ 102 { &vop_read_desc, ufsspec_read }, /* read */ 103 { &vop_write_desc, ufsspec_write }, /* write */ 104 { &vop_lease_desc, spec_lease_check }, /* lease */ 105 { &vop_ioctl_desc, spec_ioctl }, /* ioctl */ 106 { &vop_select_desc, spec_select }, /* select */ 107 { &vop_revoke_desc, spec_revoke }, /* revoke */ 108 { &vop_mmap_desc, spec_mmap }, /* mmap */ 109 { &vop_fsync_desc, ffs_fsync }, /* fsync */ 110 { &vop_seek_desc, spec_seek }, /* seek */ 111 { &vop_remove_desc, spec_remove }, /* remove */ 112 { &vop_link_desc, spec_link }, /* link */ 113 { &vop_rename_desc, spec_rename }, /* rename */ 114 { &vop_mkdir_desc, spec_mkdir }, /* mkdir */ 115 { &vop_rmdir_desc, spec_rmdir }, /* rmdir */ 116 { &vop_symlink_desc, spec_symlink }, /* symlink */ 117 { &vop_readdir_desc, spec_readdir }, /* readdir */ 118 { &vop_readlink_desc, spec_readlink }, /* readlink */ 119 { &vop_abortop_desc, spec_abortop }, /* abortop */ 120 { &vop_inactive_desc, ufs_inactive }, /* inactive */ 121 { &vop_reclaim_desc, ffs_reclaim }, /* reclaim */ 122 { &vop_lock_desc, ufs_lock }, /* lock */ 123 { &vop_unlock_desc, ufs_unlock }, /* unlock */ 124 { &vop_bmap_desc, spec_bmap }, /* bmap */ 125 { &vop_strategy_desc, spec_strategy }, /* strategy */ 126 { &vop_print_desc, ufs_print }, /* print */ 127 { &vop_islocked_desc, ufs_islocked }, /* islocked */ 128 { &vop_pathconf_desc, spec_pathconf }, /* pathconf */ 129 { &vop_advlock_desc, spec_advlock }, /* advlock */ 130 { &vop_blkatoff_desc, spec_blkatoff }, /* blkatoff */ 131 { &vop_valloc_desc, spec_valloc }, /* valloc */ 132 { &vop_reallocblks_desc, spec_reallocblks }, /* reallocblks */ 133 { &vop_vfree_desc, ffs_vfree }, /* vfree */ 134 { &vop_truncate_desc, spec_truncate }, /* truncate */ 135 { &vop_update_desc, ffs_update }, /* update */ 136 { &vop_bwrite_desc, vn_bwrite }, 137 { (struct vnodeop_desc*)NULL, (int(*)())NULL } 138 }; 139 struct vnodeopv_desc ffs_specop_opv_desc = 140 { &ffs_specop_p, ffs_specop_entries }; 141 142 #ifdef FIFO 143 int (**ffs_fifoop_p)(); 144 struct vnodeopv_entry_desc ffs_fifoop_entries[] = { 145 { &vop_default_desc, vn_default_error }, 146 { &vop_lookup_desc, fifo_lookup }, /* lookup */ 147 { &vop_create_desc, fifo_create }, /* create */ 148 { &vop_mknod_desc, fifo_mknod }, /* mknod */ 149 { &vop_open_desc, fifo_open }, /* open */ 150 { &vop_close_desc, ufsfifo_close }, /* close */ 151 { &vop_access_desc, ufs_access }, /* access */ 152 { &vop_getattr_desc, ufs_getattr }, /* getattr */ 153 { &vop_setattr_desc, ufs_setattr }, /* setattr */ 154 { &vop_read_desc, ufsfifo_read }, /* read */ 155 { &vop_write_desc, ufsfifo_write }, /* write */ 156 { &vop_lease_desc, fifo_lease_check }, /* lease */ 157 { &vop_ioctl_desc, fifo_ioctl }, /* ioctl */ 158 { &vop_select_desc, fifo_select }, /* select */ 159 { &vop_revoke_desc, fifo_revoke }, /* revoke */ 160 { &vop_mmap_desc, fifo_mmap }, /* mmap */ 161 { &vop_fsync_desc, ffs_fsync }, /* fsync */ 162 { &vop_seek_desc, fifo_seek }, /* seek */ 163 { &vop_remove_desc, fifo_remove }, /* remove */ 164 { &vop_link_desc, fifo_link }, /* link */ 165 { &vop_rename_desc, fifo_rename }, /* rename */ 166 { &vop_mkdir_desc, fifo_mkdir }, /* mkdir */ 167 { &vop_rmdir_desc, fifo_rmdir }, /* rmdir */ 168 { &vop_symlink_desc, fifo_symlink }, /* symlink */ 169 { &vop_readdir_desc, fifo_readdir }, /* readdir */ 170 { &vop_readlink_desc, fifo_readlink }, /* readlink */ 171 { &vop_abortop_desc, fifo_abortop }, /* abortop */ 172 { &vop_inactive_desc, ufs_inactive }, /* inactive */ 173 { &vop_reclaim_desc, ffs_reclaim }, /* reclaim */ 174 { &vop_lock_desc, ufs_lock }, /* lock */ 175 { &vop_unlock_desc, ufs_unlock }, /* unlock */ 176 { &vop_bmap_desc, fifo_bmap }, /* bmap */ 177 { &vop_strategy_desc, fifo_strategy }, /* strategy */ 178 { &vop_print_desc, ufs_print }, /* print */ 179 { &vop_islocked_desc, ufs_islocked }, /* islocked */ 180 { &vop_pathconf_desc, fifo_pathconf }, /* pathconf */ 181 { &vop_advlock_desc, fifo_advlock }, /* advlock */ 182 { &vop_blkatoff_desc, fifo_blkatoff }, /* blkatoff */ 183 { &vop_valloc_desc, fifo_valloc }, /* valloc */ 184 { &vop_reallocblks_desc, fifo_reallocblks }, /* reallocblks */ 185 { &vop_vfree_desc, ffs_vfree }, /* vfree */ 186 { &vop_truncate_desc, fifo_truncate }, /* truncate */ 187 { &vop_update_desc, ffs_update }, /* update */ 188 { &vop_bwrite_desc, vn_bwrite }, 189 { (struct vnodeop_desc*)NULL, (int(*)())NULL } 190 }; 191 struct vnodeopv_desc ffs_fifoop_opv_desc = 192 { &ffs_fifoop_p, ffs_fifoop_entries }; 193 #endif /* FIFO */ 194 195 /* 196 * Enabling cluster read/write operations. 197 */ 198 int doclusterread = 1; 199 int doclusterwrite = 1; 200 201 #include <ufs/ufs/ufs_readwrite.c> 202 203 /* 204 * Synch an open file. 205 */ 206 /* ARGSUSED */ 207 int 208 ffs_fsync(ap) 209 struct vop_fsync_args /* { 210 struct vnode *a_vp; 211 struct ucred *a_cred; 212 int a_waitfor; 213 struct proc *a_p; 214 } */ *ap; 215 { 216 register struct vnode *vp = ap->a_vp; 217 register struct buf *bp; 218 struct timeval tv; 219 struct buf *nbp; 220 int s; 221 222 /* 223 * Flush all dirty buffers associated with a vnode. 224 */ 225 loop: 226 s = splbio(); 227 for (bp = vp->v_dirtyblkhd.lh_first; bp; bp = nbp) { 228 nbp = bp->b_vnbufs.le_next; 229 if ((bp->b_flags & B_BUSY)) 230 continue; 231 if ((bp->b_flags & B_DELWRI) == 0) 232 panic("ffs_fsync: not dirty"); 233 bremfree(bp); 234 bp->b_flags |= B_BUSY; 235 splx(s); 236 /* 237 * Wait for I/O associated with indirect blocks to complete, 238 * since there is no way to quickly wait for them below. 239 */ 240 if (bp->b_vp == vp || ap->a_waitfor == MNT_NOWAIT) 241 (void) bawrite(bp); 242 else 243 (void) bwrite(bp); 244 goto loop; 245 } 246 if (ap->a_waitfor == MNT_WAIT) { 247 while (vp->v_numoutput) { 248 vp->v_flag |= VBWAIT; 249 sleep((caddr_t)&vp->v_numoutput, PRIBIO + 1); 250 } 251 #ifdef DIAGNOSTIC 252 if (vp->v_dirtyblkhd.lh_first) { 253 vprint("ffs_fsync: dirty", vp); 254 goto loop; 255 } 256 #endif 257 } 258 splx(s); 259 tv = time; 260 return (VOP_UPDATE(ap->a_vp, &tv, &tv, ap->a_waitfor == MNT_WAIT)); 261 } 262 263 /* 264 * Reclaim an inode so that it can be used for other purposes. 265 */ 266 int 267 ffs_reclaim(ap) 268 struct vop_reclaim_args /* { 269 struct vnode *a_vp; 270 struct proc *a_p; 271 } */ *ap; 272 { 273 register struct vnode *vp = ap->a_vp; 274 int error; 275 276 if (error = ufs_reclaim(vp, ap->a_p)) 277 return (error); 278 FREE(vp->v_data, VFSTOUFS(vp->v_mount)->um_devvp->v_tag == VT_MFS ? 279 M_MFSNODE : M_FFSNODE); 280 vp->v_data = NULL; 281 return (0); 282 } 283