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 8.3 (Berkeley) 09/05/93 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/ufs_extern.h> 33 34 #include <ufs/ffs/fs.h> 35 #include <ufs/ffs/ffs_extern.h> 36 37 /* Global vfs data structures for ufs. */ 38 int (**ffs_vnodeop_p)(); 39 struct vnodeopv_entry_desc ffs_vnodeop_entries[] = { 40 { &vop_default_desc, vn_default_error }, 41 { &vop_lookup_desc, ufs_lookup }, /* lookup */ 42 { &vop_create_desc, ufs_create }, /* create */ 43 { &vop_mknod_desc, ufs_mknod }, /* mknod */ 44 { &vop_open_desc, ufs_open }, /* open */ 45 { &vop_close_desc, ufs_close }, /* close */ 46 { &vop_access_desc, ufs_access }, /* access */ 47 { &vop_getattr_desc, ufs_getattr }, /* getattr */ 48 { &vop_setattr_desc, ufs_setattr }, /* setattr */ 49 { &vop_read_desc, ffs_read }, /* read */ 50 { &vop_write_desc, ffs_write }, /* write */ 51 { &vop_ioctl_desc, ufs_ioctl }, /* ioctl */ 52 { &vop_select_desc, ufs_select }, /* select */ 53 { &vop_mmap_desc, ufs_mmap }, /* mmap */ 54 { &vop_fsync_desc, ffs_fsync }, /* fsync */ 55 { &vop_seek_desc, ufs_seek }, /* seek */ 56 { &vop_remove_desc, ufs_remove }, /* remove */ 57 { &vop_link_desc, ufs_link }, /* link */ 58 { &vop_rename_desc, ufs_rename }, /* rename */ 59 { &vop_mkdir_desc, ufs_mkdir }, /* mkdir */ 60 { &vop_rmdir_desc, ufs_rmdir }, /* rmdir */ 61 { &vop_symlink_desc, ufs_symlink }, /* symlink */ 62 { &vop_readdir_desc, ufs_readdir }, /* readdir */ 63 { &vop_readlink_desc, ufs_readlink }, /* readlink */ 64 { &vop_abortop_desc, ufs_abortop }, /* abortop */ 65 { &vop_inactive_desc, ufs_inactive }, /* inactive */ 66 { &vop_reclaim_desc, ufs_reclaim }, /* reclaim */ 67 { &vop_lock_desc, ufs_lock }, /* lock */ 68 { &vop_unlock_desc, ufs_unlock }, /* unlock */ 69 { &vop_bmap_desc, ufs_bmap }, /* bmap */ 70 { &vop_strategy_desc, ufs_strategy }, /* strategy */ 71 { &vop_print_desc, ufs_print }, /* print */ 72 { &vop_islocked_desc, ufs_islocked }, /* islocked */ 73 { &vop_pathconf_desc, ufs_pathconf }, /* pathconf */ 74 { &vop_advlock_desc, ufs_advlock }, /* advlock */ 75 { &vop_blkatoff_desc, ffs_blkatoff }, /* blkatoff */ 76 { &vop_valloc_desc, ffs_valloc }, /* valloc */ 77 { &vop_vfree_desc, ffs_vfree }, /* vfree */ 78 { &vop_truncate_desc, ffs_truncate }, /* truncate */ 79 { &vop_update_desc, ffs_update }, /* update */ 80 { &vop_bwrite_desc, vn_bwrite }, 81 { (struct vnodeop_desc*)NULL, (int(*)())NULL } 82 }; 83 struct vnodeopv_desc ffs_vnodeop_opv_desc = 84 { &ffs_vnodeop_p, ffs_vnodeop_entries }; 85 86 int (**ffs_specop_p)(); 87 struct vnodeopv_entry_desc ffs_specop_entries[] = { 88 { &vop_default_desc, vn_default_error }, 89 { &vop_lookup_desc, spec_lookup }, /* lookup */ 90 { &vop_create_desc, spec_create }, /* create */ 91 { &vop_mknod_desc, spec_mknod }, /* mknod */ 92 { &vop_open_desc, spec_open }, /* open */ 93 { &vop_close_desc, ufsspec_close }, /* close */ 94 { &vop_access_desc, ufs_access }, /* access */ 95 { &vop_getattr_desc, ufs_getattr }, /* getattr */ 96 { &vop_setattr_desc, ufs_setattr }, /* setattr */ 97 { &vop_read_desc, ufsspec_read }, /* read */ 98 { &vop_write_desc, ufsspec_write }, /* write */ 99 { &vop_ioctl_desc, spec_ioctl }, /* ioctl */ 100 { &vop_select_desc, spec_select }, /* select */ 101 { &vop_mmap_desc, spec_mmap }, /* mmap */ 102 { &vop_fsync_desc, ffs_fsync }, /* fsync */ 103 { &vop_seek_desc, spec_seek }, /* seek */ 104 { &vop_remove_desc, spec_remove }, /* remove */ 105 { &vop_link_desc, spec_link }, /* link */ 106 { &vop_rename_desc, spec_rename }, /* rename */ 107 { &vop_mkdir_desc, spec_mkdir }, /* mkdir */ 108 { &vop_rmdir_desc, spec_rmdir }, /* rmdir */ 109 { &vop_symlink_desc, spec_symlink }, /* symlink */ 110 { &vop_readdir_desc, spec_readdir }, /* readdir */ 111 { &vop_readlink_desc, spec_readlink }, /* readlink */ 112 { &vop_abortop_desc, spec_abortop }, /* abortop */ 113 { &vop_inactive_desc, ufs_inactive }, /* inactive */ 114 { &vop_reclaim_desc, ufs_reclaim }, /* reclaim */ 115 { &vop_lock_desc, ufs_lock }, /* lock */ 116 { &vop_unlock_desc, ufs_unlock }, /* unlock */ 117 { &vop_bmap_desc, spec_bmap }, /* bmap */ 118 { &vop_strategy_desc, spec_strategy }, /* strategy */ 119 { &vop_print_desc, ufs_print }, /* print */ 120 { &vop_islocked_desc, ufs_islocked }, /* islocked */ 121 { &vop_pathconf_desc, spec_pathconf }, /* pathconf */ 122 { &vop_advlock_desc, spec_advlock }, /* advlock */ 123 { &vop_blkatoff_desc, spec_blkatoff }, /* blkatoff */ 124 { &vop_valloc_desc, spec_valloc }, /* valloc */ 125 { &vop_vfree_desc, ffs_vfree }, /* vfree */ 126 { &vop_truncate_desc, spec_truncate }, /* truncate */ 127 { &vop_update_desc, ffs_update }, /* update */ 128 { &vop_bwrite_desc, vn_bwrite }, 129 { (struct vnodeop_desc*)NULL, (int(*)())NULL } 130 }; 131 struct vnodeopv_desc ffs_specop_opv_desc = 132 { &ffs_specop_p, ffs_specop_entries }; 133 134 #ifdef FIFO 135 int (**ffs_fifoop_p)(); 136 struct vnodeopv_entry_desc ffs_fifoop_entries[] = { 137 { &vop_default_desc, vn_default_error }, 138 { &vop_lookup_desc, fifo_lookup }, /* lookup */ 139 { &vop_create_desc, fifo_create }, /* create */ 140 { &vop_mknod_desc, fifo_mknod }, /* mknod */ 141 { &vop_open_desc, fifo_open }, /* open */ 142 { &vop_close_desc, ufsfifo_close }, /* close */ 143 { &vop_access_desc, ufs_access }, /* access */ 144 { &vop_getattr_desc, ufs_getattr }, /* getattr */ 145 { &vop_setattr_desc, ufs_setattr }, /* setattr */ 146 { &vop_read_desc, ufsfifo_read }, /* read */ 147 { &vop_write_desc, ufsfifo_write }, /* write */ 148 { &vop_ioctl_desc, fifo_ioctl }, /* ioctl */ 149 { &vop_select_desc, fifo_select }, /* select */ 150 { &vop_mmap_desc, fifo_mmap }, /* mmap */ 151 { &vop_fsync_desc, ffs_fsync }, /* fsync */ 152 { &vop_seek_desc, fifo_seek }, /* seek */ 153 { &vop_remove_desc, fifo_remove }, /* remove */ 154 { &vop_link_desc, fifo_link }, /* link */ 155 { &vop_rename_desc, fifo_rename }, /* rename */ 156 { &vop_mkdir_desc, fifo_mkdir }, /* mkdir */ 157 { &vop_rmdir_desc, fifo_rmdir }, /* rmdir */ 158 { &vop_symlink_desc, fifo_symlink }, /* symlink */ 159 { &vop_readdir_desc, fifo_readdir }, /* readdir */ 160 { &vop_readlink_desc, fifo_readlink }, /* readlink */ 161 { &vop_abortop_desc, fifo_abortop }, /* abortop */ 162 { &vop_inactive_desc, ufs_inactive }, /* inactive */ 163 { &vop_reclaim_desc, ufs_reclaim }, /* reclaim */ 164 { &vop_lock_desc, ufs_lock }, /* lock */ 165 { &vop_unlock_desc, ufs_unlock }, /* unlock */ 166 { &vop_bmap_desc, fifo_bmap }, /* bmap */ 167 { &vop_strategy_desc, fifo_strategy }, /* strategy */ 168 { &vop_print_desc, ufs_print }, /* print */ 169 { &vop_islocked_desc, ufs_islocked }, /* islocked */ 170 { &vop_pathconf_desc, fifo_pathconf }, /* pathconf */ 171 { &vop_advlock_desc, fifo_advlock }, /* advlock */ 172 { &vop_blkatoff_desc, fifo_blkatoff }, /* blkatoff */ 173 { &vop_valloc_desc, fifo_valloc }, /* valloc */ 174 { &vop_vfree_desc, ffs_vfree }, /* vfree */ 175 { &vop_truncate_desc, fifo_truncate }, /* truncate */ 176 { &vop_update_desc, ffs_update }, /* update */ 177 { &vop_bwrite_desc, vn_bwrite }, 178 { (struct vnodeop_desc*)NULL, (int(*)())NULL } 179 }; 180 struct vnodeopv_desc ffs_fifoop_opv_desc = 181 { &ffs_fifoop_p, ffs_fifoop_entries }; 182 #endif /* FIFO */ 183 184 /* 185 * Enabling cluster read/write operations. 186 */ 187 #include <sys/sysctl.h> 188 int doclusterread = 1; 189 struct ctldebug debug11 = { "doclusterread", &doclusterread }; 190 int doclusterwrite = 1; 191 struct ctldebug debug12 = { "doclusterwrite", &doclusterwrite }; 192 193 #include <ufs/ufs/ufs_readwrite.c> 194 195 /* 196 * Synch an open file. 197 */ 198 /* ARGSUSED */ 199 int 200 ffs_fsync(ap) 201 struct vop_fsync_args /* { 202 struct vnode *a_vp; 203 struct ucred *a_cred; 204 int a_waitfor; 205 struct proc *a_p; 206 } */ *ap; 207 { 208 register struct vnode *vp = ap->a_vp; 209 struct inode *ip = VTOI(vp); 210 register struct buf *bp; 211 struct timeval tv; 212 struct buf *nbp; 213 int s; 214 215 /* 216 * Flush all dirty buffers associated with a vnode. 217 */ 218 loop: 219 s = splbio(); 220 for (bp = vp->v_dirtyblkhd.le_next; bp; bp = nbp) { 221 nbp = bp->b_vnbufs.qe_next; 222 if ((bp->b_flags & B_BUSY)) 223 continue; 224 if ((bp->b_flags & B_DELWRI) == 0) 225 panic("ffs_fsync: not dirty"); 226 bremfree(bp); 227 bp->b_flags |= B_BUSY; 228 splx(s); 229 /* 230 * Wait for I/O associated with indirect blocks to complete, 231 * since there is no way to quickly wait for them below. 232 */ 233 if (bp->b_vp == vp || ap->a_waitfor == MNT_NOWAIT) 234 (void) bawrite(bp); 235 else 236 (void) bwrite(bp); 237 goto loop; 238 } 239 if (ap->a_waitfor == MNT_WAIT) { 240 while (vp->v_numoutput) { 241 vp->v_flag |= VBWAIT; 242 sleep((caddr_t)&vp->v_numoutput, PRIBIO + 1); 243 } 244 #ifdef DIAGNOSTIC 245 if (vp->v_dirtyblkhd.le_next) { 246 vprint("ffs_fsync: dirty", vp); 247 goto loop; 248 } 249 #endif 250 } 251 splx(s); 252 tv = time; 253 return (VOP_UPDATE(ap->a_vp, &tv, &tv, ap->a_waitfor == MNT_WAIT)); 254 } 255