coda_vnops.c revision 54655
138625Srvb/* 238759Srvb * 338759Srvb * Coda: an Experimental Distributed File System 438759Srvb * Release 3.1 538759Srvb * 638759Srvb * Copyright (c) 1987-1998 Carnegie Mellon University 738759Srvb * All Rights Reserved 838759Srvb * 938759Srvb * Permission to use, copy, modify and distribute this software and its 1038759Srvb * documentation is hereby granted, provided that both the copyright 1138759Srvb * notice and this permission notice appear in all copies of the 1238759Srvb * software, derivative works or modified versions, and any portions 1338759Srvb * thereof, and that both notices appear in supporting documentation, and 1438759Srvb * that credit is given to Carnegie Mellon University in all documents 1538759Srvb * and publicity pertaining to direct or indirect use of this code or its 1638759Srvb * derivatives. 1738759Srvb * 1838759Srvb * CODA IS AN EXPERIMENTAL SOFTWARE SYSTEM AND IS KNOWN TO HAVE BUGS, 1938759Srvb * SOME OF WHICH MAY HAVE SERIOUS CONSEQUENCES. CARNEGIE MELLON ALLOWS 2038759Srvb * FREE USE OF THIS SOFTWARE IN ITS "AS IS" CONDITION. CARNEGIE MELLON 2138759Srvb * DISCLAIMS ANY LIABILITY OF ANY KIND FOR ANY DAMAGES WHATSOEVER 2238759Srvb * RESULTING DIRECTLY OR INDIRECTLY FROM THE USE OF THIS SOFTWARE OR OF 2338759Srvb * ANY DERIVATIVE WORK. 2438759Srvb * 2538759Srvb * Carnegie Mellon encourages users of this software to return any 2638759Srvb * improvements or extensions that they make, and to grant Carnegie 2738759Srvb * Mellon the rights to redistribute these changes without encumbrance. 2838759Srvb * 2939126Srvb * @(#) src/sys/coda/coda_vnops.c,v 1.1.1.1 1998/08/29 21:14:52 rvb Exp $ 3050477Speter * $FreeBSD: head/sys/fs/coda/coda_vnops.c 54655 1999-12-15 23:02:35Z eivind $ 3138759Srvb * 3238759Srvb */ 3338625Srvb 3438625Srvb/* 3538625Srvb * Mach Operating System 3638625Srvb * Copyright (c) 1990 Carnegie-Mellon University 3738625Srvb * Copyright (c) 1989 Carnegie-Mellon University 3838625Srvb * All rights reserved. The CMU software License Agreement specifies 3938625Srvb * the terms and conditions for use and redistribution. 4038625Srvb */ 4138625Srvb 4238625Srvb/* 4338625Srvb * This code was written for the Coda file system at Carnegie Mellon 4438625Srvb * University. Contributers include David Steere, James Kistler, and 4538625Srvb * M. Satyanarayanan. 4638625Srvb */ 4738625Srvb 4838625Srvb#include <sys/param.h> 4938625Srvb#include <sys/systm.h> 5038759Srvb#include <sys/kernel.h> 5138759Srvb#include <sys/proc.h> 5238625Srvb#include <sys/malloc.h> 5338759Srvb#include <sys/mount.h> 5438625Srvb#include <sys/errno.h> 5538625Srvb#include <sys/acct.h> 5638625Srvb#include <sys/file.h> 5738759Srvb#include <sys/fcntl.h> 5838625Srvb#include <sys/uio.h> 5938625Srvb#include <sys/namei.h> 6038625Srvb#include <sys/ioccom.h> 6138625Srvb#include <sys/select.h> 6238759Srvb 6338625Srvb#include <vm/vm.h> 6438625Srvb#include <vm/vm_object.h> 6538625Srvb#include <vm/vm_extern.h> 6638759Srvb#include <vm/vm_zone.h> 6738625Srvb 6839126Srvb#include <coda/coda.h> 6939126Srvb#include <coda/cnode.h> 7039126Srvb#include <coda/coda_vnops.h> 7139126Srvb#include <coda/coda_venus.h> 7239126Srvb#include <coda/coda_opstats.h> 7339126Srvb#include <coda/coda_subr.h> 7439126Srvb#include <coda/coda_namecache.h> 7539126Srvb#include <coda/coda_pioctl.h> 7638625Srvb 7738625Srvb/* 7838625Srvb * These flags select various performance enhancements. 7938625Srvb */ 8039085Srvbint coda_attr_cache = 1; /* Set to cache attributes in the kernel */ 8139085Srvbint coda_symlink_cache = 1; /* Set to cache symbolic link information */ 8239085Srvbint coda_access_cache = 1; /* Set to handle some access checks directly */ 8338625Srvb 8438625Srvb/* structure to keep track of vfs calls */ 8538625Srvb 8639085Srvbstruct coda_op_stats coda_vnodeopstats[CODA_VNODEOPS_SIZE]; 8738625Srvb 8839085Srvb#define MARK_ENTRY(op) (coda_vnodeopstats[op].entries++) 8939085Srvb#define MARK_INT_SAT(op) (coda_vnodeopstats[op].sat_intrn++) 9039085Srvb#define MARK_INT_FAIL(op) (coda_vnodeopstats[op].unsat_intrn++) 9139085Srvb#define MARK_INT_GEN(op) (coda_vnodeopstats[op].gen_intrn++) 9238625Srvb 9338625Srvb/* What we are delaying for in printf */ 9439085Srvbint coda_printf_delay = 0; /* in microseconds */ 9539085Srvbint coda_vnop_print_entry = 0; 9639085Srvbstatic int coda_lockdebug = 0; 9738625Srvb 9838625Srvb/* Definition of the vfs operation vector */ 9938625Srvb 10038625Srvb/* 10138625Srvb * Some NetBSD details: 10238625Srvb * 10339085Srvb * coda_start is called at the end of the mount syscall. 10439085Srvb * coda_init is called at boot time. 10538625Srvb */ 10638625Srvb 10739085Srvb#define ENTRY if(coda_vnop_print_entry) myprintf(("Entered %s\n",__FUNCTION__)) 10838625Srvb 10938625Srvb/* Definition of the vnode operation vector */ 11038625Srvb 11139085Srvbstruct vnodeopv_entry_desc coda_vnodeop_entries[] = { 11239085Srvb { &vop_default_desc, coda_vop_error }, 11339085Srvb { &vop_lookup_desc, coda_lookup }, /* lookup */ 11439085Srvb { &vop_create_desc, coda_create }, /* create */ 11539650Srvb { &vop_mknod_desc, coda_vop_error }, /* mknod */ 11639085Srvb { &vop_open_desc, coda_open }, /* open */ 11739085Srvb { &vop_close_desc, coda_close }, /* close */ 11839085Srvb { &vop_access_desc, coda_access }, /* access */ 11939650Srvb { &vop_getattr_desc, coda_getattr }, /* getattr */ 12039650Srvb { &vop_setattr_desc, coda_setattr }, /* setattr */ 12139085Srvb { &vop_read_desc, coda_read }, /* read */ 12239085Srvb { &vop_write_desc, coda_write }, /* write */ 12339085Srvb { &vop_ioctl_desc, coda_ioctl }, /* ioctl */ 12439650Srvb { &vop_mmap_desc, coda_vop_error }, /* mmap */ 12539085Srvb { &vop_fsync_desc, coda_fsync }, /* fsync */ 12639085Srvb { &vop_remove_desc, coda_remove }, /* remove */ 12739085Srvb { &vop_link_desc, coda_link }, /* link */ 12839085Srvb { &vop_rename_desc, coda_rename }, /* rename */ 12939085Srvb { &vop_mkdir_desc, coda_mkdir }, /* mkdir */ 13039085Srvb { &vop_rmdir_desc, coda_rmdir }, /* rmdir */ 13139650Srvb { &vop_symlink_desc, coda_symlink }, /* symlink */ 13239650Srvb { &vop_readdir_desc, coda_readdir }, /* readdir */ 13339085Srvb { &vop_readlink_desc, coda_readlink }, /* readlink */ 13439085Srvb { &vop_inactive_desc, coda_inactive }, /* inactive */ 13539650Srvb { &vop_reclaim_desc, coda_reclaim }, /* reclaim */ 13639085Srvb { &vop_lock_desc, coda_lock }, /* lock */ 13739085Srvb { &vop_unlock_desc, coda_unlock }, /* unlock */ 13839085Srvb { &vop_bmap_desc, coda_bmap }, /* bmap */ 13939085Srvb { &vop_strategy_desc, coda_strategy }, /* strategy */ 14039650Srvb { &vop_print_desc, coda_vop_error }, /* print */ 14139085Srvb { &vop_islocked_desc, coda_islocked }, /* islocked */ 14239650Srvb { &vop_pathconf_desc, coda_vop_error }, /* pathconf */ 14339650Srvb { &vop_advlock_desc, coda_vop_nop }, /* advlock */ 14439650Srvb { &vop_bwrite_desc, coda_vop_error }, /* bwrite */ 14539650Srvb { &vop_lease_desc, coda_vop_nop }, /* lease */ 14638759Srvb { &vop_poll_desc, (vop_t *) vop_stdpoll }, 14739085Srvb { &vop_getpages_desc, coda_fbsd_getpages }, /* pager intf.*/ 14839085Srvb { &vop_putpages_desc, coda_fbsd_putpages }, /* pager intf.*/ 14938625Srvb 15038759Srvb#if 0 15138625Srvb 15238759Srvb we need to define these someday 15338625Srvb#define UFS_BLKATOFF(aa, bb, cc, dd) VFSTOUFS((aa)->v_mount)->um_blkatoff(aa, bb, cc, dd) 15438625Srvb#define UFS_VALLOC(aa, bb, cc, dd) VFSTOUFS((aa)->v_mount)->um_valloc(aa, bb, cc, dd) 15538625Srvb#define UFS_VFREE(aa, bb, cc) VFSTOUFS((aa)->v_mount)->um_vfree(aa, bb, cc) 15638625Srvb#define UFS_TRUNCATE(aa, bb, cc, dd, ee) VFSTOUFS((aa)->v_mount)->um_truncate(aa, bb, cc, dd, ee) 15742374Sbde#define UFS_UPDATE(aa, bb) VFSTOUFS((aa)->v_mount)->um_update(aa, bb) 15838625Srvb 15938625Srvb missing 16038625Srvb { &vop_reallocblks_desc, (vop_t *) ufs_missingop }, 16138625Srvb { &vop_cachedlookup_desc, (vop_t *) ufs_lookup }, 16238625Srvb { &vop_whiteout_desc, (vop_t *) ufs_whiteout }, 16338625Srvb#endif 16438625Srvb { (struct vnodeop_desc*)NULL, (int(*)(void *))NULL } 16538625Srvb}; 16638625Srvb 16739085Srvbstatic struct vnodeopv_desc coda_vnodeop_opv_desc = 16839085Srvb { &coda_vnodeop_p, coda_vnodeop_entries }; 16938625Srvb 17039085SrvbVNODEOP_SET(coda_vnodeop_opv_desc); 17138625Srvb 17238625Srvb/* A generic panic: we were called with something we didn't define yet */ 17338625Srvbint 17439085Srvbcoda_vop_error(void *anon) { 17538625Srvb struct vnodeop_desc **desc = (struct vnodeop_desc **)anon; 17638625Srvb 17741202Srvb myprintf(("coda_vop_error: Vnode operation %s called, but not defined.\n", 17838625Srvb (*desc)->vdesc_name)); 17941202Srvb /* 18039085Srvb panic("coda_vop_error"); 18141202Srvb */ 18241202Srvb return EIO; 18338625Srvb} 18438625Srvb 18538625Srvb/* A generic do-nothing. For lease_check, advlock */ 18638625Srvbint 18739085Srvbcoda_vop_nop(void *anon) { 18838625Srvb struct vnodeop_desc **desc = (struct vnodeop_desc **)anon; 18938625Srvb 19039085Srvb if (codadebug) { 19138625Srvb myprintf(("Vnode operation %s called, but unsupported\n", 19238625Srvb (*desc)->vdesc_name)); 19338625Srvb } 19438625Srvb return (0); 19538625Srvb} 19638625Srvb 19738625Srvbint 19839085Srvbcoda_vnodeopstats_init(void) 19938625Srvb{ 20038625Srvb register int i; 20138625Srvb 20239085Srvb for(i=0;i<CODA_VNODEOPS_SIZE;i++) { 20339085Srvb coda_vnodeopstats[i].opcode = i; 20439085Srvb coda_vnodeopstats[i].entries = 0; 20539085Srvb coda_vnodeopstats[i].sat_intrn = 0; 20639085Srvb coda_vnodeopstats[i].unsat_intrn = 0; 20739085Srvb coda_vnodeopstats[i].gen_intrn = 0; 20838625Srvb } 20938625Srvb return 0; 21038625Srvb} 21138625Srvb 21238625Srvb/* 21339085Srvb * coda_open calls Venus to return the device, inode pair of the cache 21439085Srvb * file holding the data. Using iget, coda_open finds the vnode of the 21538625Srvb * cache file, and then opens it. 21638625Srvb */ 21738625Srvbint 21839085Srvbcoda_open(v) 21938625Srvb void *v; 22038625Srvb{ 22138625Srvb /* 22238625Srvb * NetBSD can pass the O_EXCL flag in mode, even though the check 22338625Srvb * has already happened. Venus defensively assumes that if open 22438625Srvb * is passed the EXCL, it must be a bug. We strip the flag here. 22538625Srvb */ 22638625Srvb/* true args */ 22738625Srvb struct vop_open_args *ap = v; 22838625Srvb register struct vnode **vpp = &(ap->a_vp); 22938625Srvb struct cnode *cp = VTOC(*vpp); 23038625Srvb int flag = ap->a_mode & (~O_EXCL); 23138625Srvb struct ucred *cred = ap->a_cred; 23238625Srvb struct proc *p = ap->a_p; 23338625Srvb/* locals */ 23438625Srvb int error; 23538625Srvb struct vnode *vp; 23638625Srvb dev_t dev; 23738625Srvb ino_t inode; 23838625Srvb 23939085Srvb MARK_ENTRY(CODA_OPEN_STATS); 24038625Srvb 24138625Srvb /* Check for open of control file. */ 24238625Srvb if (IS_CTL_VP(*vpp)) { 24338625Srvb /* XXX */ 24438625Srvb /* if (WRITEABLE(flag)) */ 24538625Srvb if (flag & (FWRITE | O_TRUNC | O_CREAT | O_EXCL)) { 24639085Srvb MARK_INT_FAIL(CODA_OPEN_STATS); 24738625Srvb return(EACCES); 24838625Srvb } 24939085Srvb MARK_INT_SAT(CODA_OPEN_STATS); 25038625Srvb return(0); 25138625Srvb } 25238625Srvb 25338625Srvb error = venus_open(vtomi((*vpp)), &cp->c_fid, flag, cred, p, &dev, &inode); 25438625Srvb if (error) 25538625Srvb return (error); 25638625Srvb if (!error) { 25749524Sbde CODADEBUG( CODA_OPEN,myprintf(("open: dev %#lx inode %lu result %d\n", 25849524Sbde (u_long)dev2udev(dev), (u_long)inode, 25949524Sbde error)); ) 26038625Srvb } 26138625Srvb 26238625Srvb /* Translate the <device, inode> pair for the cache file into 26338625Srvb an inode pointer. */ 26439085Srvb error = coda_grab_vnode(dev, inode, &vp); 26538625Srvb if (error) 26638625Srvb return (error); 26738625Srvb 26838759Srvb /* We get the vnode back locked. Needs unlocked */ 26938759Srvb VOP_UNLOCK(vp, 0, p); 27038625Srvb /* Keep a reference until the close comes in. */ 27138625Srvb vref(*vpp); 27238625Srvb 27338625Srvb /* Save the vnode pointer for the cache file. */ 27438625Srvb if (cp->c_ovp == NULL) { 27538625Srvb cp->c_ovp = vp; 27638625Srvb } else { 27738625Srvb if (cp->c_ovp != vp) 27839085Srvb panic("coda_open: cp->c_ovp != ITOV(ip)"); 27938625Srvb } 28038625Srvb cp->c_ocount++; 28138625Srvb 28238625Srvb /* Flush the attribute cached if writing the file. */ 28338625Srvb if (flag & FWRITE) { 28438625Srvb cp->c_owrite++; 28538625Srvb cp->c_flags &= ~C_VATTR; 28638625Srvb } 28738625Srvb 28838625Srvb /* Save the <device, inode> pair for the cache file to speed 28938625Srvb up subsequent page_read's. */ 29038625Srvb cp->c_device = dev; 29138625Srvb cp->c_inode = inode; 29238625Srvb 29338625Srvb /* Open the cache file. */ 29438625Srvb error = VOP_OPEN(vp, flag, cred, p); 29538625Srvb if (error) { 29639085Srvb printf("coda_open: VOP_OPEN on container failed %d\n", error); 29738625Srvb return (error); 29838625Srvb } 29939650Srvb/* grab (above) does this when it calls newvnode unless it's in the cache*/ 30038625Srvb if (vp->v_type == VREG) { 30142315Seivind error = vfs_object_create(vp, p, cred); 30238625Srvb if (error != 0) { 30339085Srvb printf("coda_open: vfs_object_create() returns %d\n", error); 30438625Srvb vput(vp); 30538625Srvb } 30638625Srvb } 30739650Srvb 30838625Srvb return(error); 30938625Srvb} 31038625Srvb 31138625Srvb/* 31238625Srvb * Close the cache file used for I/O and notify Venus. 31338625Srvb */ 31438625Srvbint 31539085Srvbcoda_close(v) 31638625Srvb void *v; 31738625Srvb{ 31838625Srvb/* true args */ 31938625Srvb struct vop_close_args *ap = v; 32038625Srvb struct vnode *vp = ap->a_vp; 32138625Srvb struct cnode *cp = VTOC(vp); 32238625Srvb int flag = ap->a_fflag; 32338625Srvb struct ucred *cred = ap->a_cred; 32438625Srvb struct proc *p = ap->a_p; 32538625Srvb/* locals */ 32638625Srvb int error; 32738625Srvb 32839085Srvb MARK_ENTRY(CODA_CLOSE_STATS); 32938625Srvb 33038625Srvb /* Check for close of control file. */ 33138625Srvb if (IS_CTL_VP(vp)) { 33239085Srvb MARK_INT_SAT(CODA_CLOSE_STATS); 33338625Srvb return(0); 33438625Srvb } 33538625Srvb 33638625Srvb if (IS_UNMOUNTING(cp)) { 33738625Srvb if (cp->c_ovp) { 33839728Srvb#ifdef CODA_VERBOSE 33939085Srvb printf("coda_close: destroying container ref %d, ufs vp %p of vp %p/cp %p\n", 34038625Srvb vp->v_usecount, cp->c_ovp, vp, cp); 34139650Srvb#endif 34240708Srvb#ifdef hmm 34338625Srvb vgone(cp->c_ovp); 34440708Srvb#else 34540708Srvb VOP_CLOSE(cp->c_ovp, flag, cred, p); /* Do errors matter here? */ 34640708Srvb vrele(cp->c_ovp); 34740708Srvb#endif 34838625Srvb } else { 34939728Srvb#ifdef CODA_VERBOSE 35039085Srvb printf("coda_close: NO container vp %p/cp %p\n", vp, cp); 35139650Srvb#endif 35238625Srvb } 35338625Srvb return ENODEV; 35438625Srvb } else { 35538625Srvb VOP_CLOSE(cp->c_ovp, flag, cred, p); /* Do errors matter here? */ 35638625Srvb vrele(cp->c_ovp); 35738625Srvb } 35838625Srvb 35938625Srvb if (--cp->c_ocount == 0) 36038625Srvb cp->c_ovp = NULL; 36138625Srvb 36238625Srvb if (flag & FWRITE) /* file was opened for write */ 36338625Srvb --cp->c_owrite; 36438625Srvb 36538625Srvb error = venus_close(vtomi(vp), &cp->c_fid, flag, cred, p); 36638625Srvb vrele(CTOV(cp)); 36738625Srvb 36839085Srvb CODADEBUG(CODA_CLOSE, myprintf(("close: result %d\n",error)); ) 36938625Srvb return(error); 37038625Srvb} 37138625Srvb 37238625Srvbint 37339085Srvbcoda_read(v) 37438625Srvb void *v; 37538625Srvb{ 37638625Srvb struct vop_read_args *ap = v; 37738625Srvb 37838625Srvb ENTRY; 37939085Srvb return(coda_rdwr(ap->a_vp, ap->a_uio, UIO_READ, 38038625Srvb ap->a_ioflag, ap->a_cred, ap->a_uio->uio_procp)); 38138625Srvb} 38238625Srvb 38338625Srvbint 38439085Srvbcoda_write(v) 38538625Srvb void *v; 38638625Srvb{ 38738625Srvb struct vop_write_args *ap = v; 38838625Srvb 38938625Srvb ENTRY; 39039085Srvb return(coda_rdwr(ap->a_vp, ap->a_uio, UIO_WRITE, 39138625Srvb ap->a_ioflag, ap->a_cred, ap->a_uio->uio_procp)); 39238625Srvb} 39338625Srvb 39438625Srvbint 39539085Srvbcoda_rdwr(vp, uiop, rw, ioflag, cred, p) 39638625Srvb struct vnode *vp; 39738625Srvb struct uio *uiop; 39838625Srvb enum uio_rw rw; 39938625Srvb int ioflag; 40038625Srvb struct ucred *cred; 40138625Srvb struct proc *p; 40238625Srvb{ 40338625Srvb/* upcall decl */ 40438625Srvb /* NOTE: container file operation!!! */ 40538625Srvb/* locals */ 40638625Srvb struct cnode *cp = VTOC(vp); 40738625Srvb struct vnode *cfvp = cp->c_ovp; 40838625Srvb int igot_internally = 0; 40938625Srvb int opened_internally = 0; 41038625Srvb int error = 0; 41138625Srvb 41239085Srvb MARK_ENTRY(CODA_RDWR_STATS); 41338625Srvb 41449524Sbde CODADEBUG(CODA_RDWR, myprintf(("coda_rdwr(%d, %p, %d, %lld, %d)\n", rw, 41549524Sbde (void *)uiop->uio_iov->iov_base, uiop->uio_resid, 41649524Sbde (long long)uiop->uio_offset, uiop->uio_segflg)); ) 41738625Srvb 41838625Srvb /* Check for rdwr of control object. */ 41938625Srvb if (IS_CTL_VP(vp)) { 42039085Srvb MARK_INT_FAIL(CODA_RDWR_STATS); 42138625Srvb return(EINVAL); 42238625Srvb } 42338625Srvb 42438625Srvb /* 42538625Srvb * If file is not already open this must be a page 42638625Srvb * {read,write} request. Iget the cache file's inode 42738625Srvb * pointer if we still have its <device, inode> pair. 42838625Srvb * Otherwise, we must do an internal open to derive the 42938625Srvb * pair. 43038625Srvb */ 43138625Srvb if (cfvp == NULL) { 43238625Srvb /* 43338625Srvb * If we're dumping core, do the internal open. Otherwise 43438625Srvb * venus won't have the correct size of the core when 43538625Srvb * it's completely written. 43638625Srvb */ 43738625Srvb if (cp->c_inode != 0 && !(p && (p->p_acflag & ACORE))) { 43838625Srvb igot_internally = 1; 43939085Srvb error = coda_grab_vnode(cp->c_device, cp->c_inode, &cfvp); 44038625Srvb if (error) { 44139085Srvb MARK_INT_FAIL(CODA_RDWR_STATS); 44238625Srvb return(error); 44338625Srvb } 44438625Srvb /* 44538625Srvb * We get the vnode back locked in both Mach and 44638625Srvb * NetBSD. Needs unlocked 44738625Srvb */ 44838759Srvb VOP_UNLOCK(cfvp, 0, p); 44938625Srvb } 45038625Srvb else { 45138625Srvb opened_internally = 1; 45239085Srvb MARK_INT_GEN(CODA_OPEN_STATS); 45338625Srvb error = VOP_OPEN(vp, (rw == UIO_READ ? FREAD : FWRITE), 45438625Srvb cred, p); 45539085Srvbprintf("coda_rdwr: Internally Opening %p\n", vp); 45638625Srvb if (error) { 45739085Srvb printf("coda_rdwr: VOP_OPEN on container failed %d\n", error); 45838625Srvb return (error); 45938625Srvb } 46038625Srvb if (vp->v_type == VREG) { 46142315Seivind error = vfs_object_create(vp, p, cred); 46238625Srvb if (error != 0) { 46339085Srvb printf("coda_rdwr: vfs_object_create() returns %d\n", error); 46438625Srvb vput(vp); 46538625Srvb } 46638625Srvb } 46738625Srvb if (error) { 46839085Srvb MARK_INT_FAIL(CODA_RDWR_STATS); 46938625Srvb return(error); 47038625Srvb } 47138625Srvb cfvp = cp->c_ovp; 47238625Srvb } 47338625Srvb } 47438625Srvb 47538625Srvb /* Have UFS handle the call. */ 47639085Srvb CODADEBUG(CODA_RDWR, myprintf(("indirect rdwr: fid = (%lx.%lx.%lx), refcnt = %d\n", 47738625Srvb cp->c_fid.Volume, cp->c_fid.Vnode, 47838625Srvb cp->c_fid.Unique, CTOV(cp)->v_usecount)); ) 47938625Srvb 48039650Srvb 48138625Srvb if (rw == UIO_READ) { 48238625Srvb error = VOP_READ(cfvp, uiop, ioflag, cred); 48338625Srvb } else { 48438625Srvb error = VOP_WRITE(cfvp, uiop, ioflag, cred); 48538625Srvb /* ufs_write updates the vnode_pager_setsize for the vnode/object */ 48639650Srvb 48738625Srvb { struct vattr attr; 48838625Srvb 48938625Srvb if (VOP_GETATTR(cfvp, &attr, cred, p) == 0) { 49038625Srvb vnode_pager_setsize(vp, attr.va_size); 49138625Srvb } 49238625Srvb } 49338625Srvb } 49438625Srvb 49538625Srvb if (error) 49639085Srvb MARK_INT_FAIL(CODA_RDWR_STATS); 49738625Srvb else 49839085Srvb MARK_INT_SAT(CODA_RDWR_STATS); 49938625Srvb 50038625Srvb /* Do an internal close if necessary. */ 50138625Srvb if (opened_internally) { 50239085Srvb MARK_INT_GEN(CODA_CLOSE_STATS); 50338625Srvb (void)VOP_CLOSE(vp, (rw == UIO_READ ? FREAD : FWRITE), cred, p); 50438625Srvb } 50538625Srvb 50638625Srvb /* Invalidate cached attributes if writing. */ 50738625Srvb if (rw == UIO_WRITE) 50838625Srvb cp->c_flags &= ~C_VATTR; 50938625Srvb return(error); 51038625Srvb} 51138625Srvb 51238625Srvbint 51339085Srvbcoda_ioctl(v) 51438625Srvb void *v; 51538625Srvb{ 51638625Srvb/* true args */ 51738625Srvb struct vop_ioctl_args *ap = v; 51838625Srvb struct vnode *vp = ap->a_vp; 51938625Srvb int com = ap->a_command; 52038625Srvb caddr_t data = ap->a_data; 52138625Srvb int flag = ap->a_fflag; 52238625Srvb struct ucred *cred = ap->a_cred; 52338625Srvb struct proc *p = ap->a_p; 52438625Srvb/* locals */ 52538625Srvb int error; 52638625Srvb struct vnode *tvp; 52738625Srvb struct nameidata ndp; 52838625Srvb struct PioctlData *iap = (struct PioctlData *)data; 52938625Srvb 53039085Srvb MARK_ENTRY(CODA_IOCTL_STATS); 53138625Srvb 53239085Srvb CODADEBUG(CODA_IOCTL, myprintf(("in coda_ioctl on %s\n", iap->path));) 53338625Srvb 53438625Srvb /* Don't check for operation on a dying object, for ctlvp it 53538625Srvb shouldn't matter */ 53638625Srvb 53738625Srvb /* Must be control object to succeed. */ 53838625Srvb if (!IS_CTL_VP(vp)) { 53939085Srvb MARK_INT_FAIL(CODA_IOCTL_STATS); 54039085Srvb CODADEBUG(CODA_IOCTL, myprintf(("coda_ioctl error: vp != ctlvp"));) 54138625Srvb return (EOPNOTSUPP); 54238625Srvb } 54338625Srvb /* Look up the pathname. */ 54438625Srvb 54538625Srvb /* Should we use the name cache here? It would get it from 54638625Srvb lookupname sooner or later anyway, right? */ 54738625Srvb 54843382Sbde NDINIT(&ndp, LOOKUP, (iap->follow ? FOLLOW : NOFOLLOW), UIO_USERSPACE, iap->path, p); 54938625Srvb error = namei(&ndp); 55038625Srvb tvp = ndp.ni_vp; 55138625Srvb 55238625Srvb if (error) { 55339085Srvb MARK_INT_FAIL(CODA_IOCTL_STATS); 55439085Srvb CODADEBUG(CODA_IOCTL, myprintf(("coda_ioctl error: lookup returns %d\n", 55538625Srvb error));) 55638625Srvb return(error); 55738625Srvb } 55838625Srvb 55938625Srvb /* 56038625Srvb * Make sure this is a coda style cnode, but it may be a 56138625Srvb * different vfsp 56238625Srvb */ 56349687Sphk if (tvp->v_op != coda_vnodeop_p) { 56438625Srvb vrele(tvp); 56554655Seivind NDFREE(&ndp, NDF_ONLY_PNBUF); 56639085Srvb MARK_INT_FAIL(CODA_IOCTL_STATS); 56739085Srvb CODADEBUG(CODA_IOCTL, 56839085Srvb myprintf(("coda_ioctl error: %s not a coda object\n", 56938625Srvb iap->path));) 57038625Srvb return(EINVAL); 57138625Srvb } 57238625Srvb 57338625Srvb if (iap->vi.in_size > VC_MAXDATASIZE) { 57454655Seivind NDFREE(&ndp, 0); 57538625Srvb return(EINVAL); 57638625Srvb } 57738625Srvb error = venus_ioctl(vtomi(tvp), &((VTOC(tvp))->c_fid), com, flag, data, cred, p); 57838625Srvb 57938625Srvb if (error) 58039085Srvb MARK_INT_FAIL(CODA_IOCTL_STATS); 58138625Srvb else 58239085Srvb CODADEBUG(CODA_IOCTL, myprintf(("Ioctl returns %d \n", error)); ) 58338625Srvb 58438625Srvb vrele(tvp); 58554655Seivind NDFREE(&ndp, NDF_ONLY_PNBUF); 58638625Srvb return(error); 58738625Srvb} 58838625Srvb 58938625Srvb/* 59038625Srvb * To reduce the cost of a user-level venus;we cache attributes in 59138625Srvb * the kernel. Each cnode has storage allocated for an attribute. If 59238625Srvb * c_vattr is valid, return a reference to it. Otherwise, get the 59338625Srvb * attributes from venus and store them in the cnode. There is some 59438625Srvb * question if this method is a security leak. But I think that in 59538625Srvb * order to make this call, the user must have done a lookup and 59638625Srvb * opened the file, and therefore should already have access. 59738625Srvb */ 59838625Srvbint 59939085Srvbcoda_getattr(v) 60038625Srvb void *v; 60138625Srvb{ 60238625Srvb/* true args */ 60338625Srvb struct vop_getattr_args *ap = v; 60438625Srvb struct vnode *vp = ap->a_vp; 60538625Srvb struct cnode *cp = VTOC(vp); 60638625Srvb struct vattr *vap = ap->a_vap; 60738625Srvb struct ucred *cred = ap->a_cred; 60838625Srvb struct proc *p = ap->a_p; 60938625Srvb/* locals */ 61038625Srvb int error; 61138625Srvb 61239085Srvb MARK_ENTRY(CODA_GETATTR_STATS); 61338625Srvb 61438625Srvb if (IS_UNMOUNTING(cp)) 61538625Srvb return ENODEV; 61638759Srvb 61738625Srvb /* Check for getattr of control object. */ 61838625Srvb if (IS_CTL_VP(vp)) { 61939085Srvb MARK_INT_FAIL(CODA_GETATTR_STATS); 62038625Srvb return(ENOENT); 62138625Srvb } 62238625Srvb 62338625Srvb /* Check to see if the attributes have already been cached */ 62438625Srvb if (VALID_VATTR(cp)) { 62539085Srvb CODADEBUG(CODA_GETATTR, { myprintf(("attr cache hit: (%lx.%lx.%lx)\n", 62638625Srvb cp->c_fid.Volume, 62738625Srvb cp->c_fid.Vnode, 62838625Srvb cp->c_fid.Unique));}); 62939085Srvb CODADEBUG(CODA_GETATTR, if (!(codadebug & ~CODA_GETATTR)) 63038625Srvb print_vattr(&cp->c_vattr); ); 63138625Srvb 63238625Srvb *vap = cp->c_vattr; 63339085Srvb MARK_INT_SAT(CODA_GETATTR_STATS); 63438625Srvb return(0); 63538625Srvb } 63638625Srvb 63738625Srvb error = venus_getattr(vtomi(vp), &cp->c_fid, cred, p, vap); 63838625Srvb 63938625Srvb if (!error) { 64039085Srvb CODADEBUG(CODA_GETATTR, myprintf(("getattr miss (%lx.%lx.%lx): result %d\n", 64138625Srvb cp->c_fid.Volume, 64238625Srvb cp->c_fid.Vnode, 64338625Srvb cp->c_fid.Unique, 64438625Srvb error)); ) 64538625Srvb 64639085Srvb CODADEBUG(CODA_GETATTR, if (!(codadebug & ~CODA_GETATTR)) 64738625Srvb print_vattr(vap); ); 64838625Srvb 64938625Srvb { int size = vap->va_size; 65038625Srvb struct vnode *convp = cp->c_ovp; 65138625Srvb if (convp != (struct vnode *)0) { 65238625Srvb vnode_pager_setsize(convp, size); 65338625Srvb } 65438625Srvb } 65538625Srvb /* If not open for write, store attributes in cnode */ 65639085Srvb if ((cp->c_owrite == 0) && (coda_attr_cache)) { 65738625Srvb cp->c_vattr = *vap; 65838625Srvb cp->c_flags |= C_VATTR; 65938625Srvb } 66038625Srvb 66138625Srvb } 66238625Srvb return(error); 66338625Srvb} 66438625Srvb 66538625Srvbint 66639085Srvbcoda_setattr(v) 66738625Srvb void *v; 66838625Srvb{ 66938625Srvb/* true args */ 67038625Srvb struct vop_setattr_args *ap = v; 67138625Srvb register struct vnode *vp = ap->a_vp; 67238625Srvb struct cnode *cp = VTOC(vp); 67338625Srvb register struct vattr *vap = ap->a_vap; 67438625Srvb struct ucred *cred = ap->a_cred; 67538625Srvb struct proc *p = ap->a_p; 67638625Srvb/* locals */ 67738625Srvb int error; 67838625Srvb 67939085Srvb MARK_ENTRY(CODA_SETATTR_STATS); 68038625Srvb 68138625Srvb /* Check for setattr of control object. */ 68238625Srvb if (IS_CTL_VP(vp)) { 68339085Srvb MARK_INT_FAIL(CODA_SETATTR_STATS); 68438625Srvb return(ENOENT); 68538625Srvb } 68638625Srvb 68739085Srvb if (codadebug & CODADBGMSK(CODA_SETATTR)) { 68838625Srvb print_vattr(vap); 68938625Srvb } 69038625Srvb error = venus_setattr(vtomi(vp), &cp->c_fid, vap, cred, p); 69138625Srvb 69238625Srvb if (!error) 69338625Srvb cp->c_flags &= ~C_VATTR; 69438625Srvb 69538625Srvb { int size = vap->va_size; 69638625Srvb struct vnode *convp = cp->c_ovp; 69738625Srvb if (size != VNOVAL && convp != (struct vnode *)0) { 69838625Srvb vnode_pager_setsize(convp, size); 69938625Srvb } 70038625Srvb } 70139085Srvb CODADEBUG(CODA_SETATTR, myprintf(("setattr %d\n", error)); ) 70238625Srvb return(error); 70338625Srvb} 70438625Srvb 70538625Srvbint 70639085Srvbcoda_access(v) 70738625Srvb void *v; 70838625Srvb{ 70938625Srvb/* true args */ 71038625Srvb struct vop_access_args *ap = v; 71138625Srvb struct vnode *vp = ap->a_vp; 71238625Srvb struct cnode *cp = VTOC(vp); 71338625Srvb int mode = ap->a_mode; 71438625Srvb struct ucred *cred = ap->a_cred; 71538625Srvb struct proc *p = ap->a_p; 71638625Srvb/* locals */ 71738625Srvb int error; 71838625Srvb 71939085Srvb MARK_ENTRY(CODA_ACCESS_STATS); 72038625Srvb 72138625Srvb /* Check for access of control object. Only read access is 72238625Srvb allowed on it. */ 72338625Srvb if (IS_CTL_VP(vp)) { 72438625Srvb /* bogus hack - all will be marked as successes */ 72539085Srvb MARK_INT_SAT(CODA_ACCESS_STATS); 72638625Srvb return(((mode & VREAD) && !(mode & (VWRITE | VEXEC))) 72738625Srvb ? 0 : EACCES); 72838625Srvb } 72938625Srvb 73038625Srvb /* 73138625Srvb * if the file is a directory, and we are checking exec (eg lookup) 73238625Srvb * access, and the file is in the namecache, then the user must have 73338625Srvb * lookup access to it. 73438625Srvb */ 73539085Srvb if (coda_access_cache) { 73638625Srvb if ((vp->v_type == VDIR) && (mode & VEXEC)) { 73739085Srvb if (coda_nc_lookup(cp, ".", 1, cred)) { 73839085Srvb MARK_INT_SAT(CODA_ACCESS_STATS); 73938625Srvb return(0); /* it was in the cache */ 74038625Srvb } 74138625Srvb } 74238625Srvb } 74338625Srvb 74438625Srvb error = venus_access(vtomi(vp), &cp->c_fid, mode, cred, p); 74538625Srvb 74638625Srvb return(error); 74738625Srvb} 74838625Srvb 74938625Srvbint 75039085Srvbcoda_readlink(v) 75138625Srvb void *v; 75238625Srvb{ 75338625Srvb/* true args */ 75438625Srvb struct vop_readlink_args *ap = v; 75538625Srvb struct vnode *vp = ap->a_vp; 75638625Srvb struct cnode *cp = VTOC(vp); 75738625Srvb struct uio *uiop = ap->a_uio; 75838625Srvb struct ucred *cred = ap->a_cred; 75938625Srvb struct proc *p = ap->a_uio->uio_procp; 76038625Srvb/* locals */ 76138625Srvb int error; 76238625Srvb char *str; 76338625Srvb int len; 76438625Srvb 76539085Srvb MARK_ENTRY(CODA_READLINK_STATS); 76638625Srvb 76738625Srvb /* Check for readlink of control object. */ 76838625Srvb if (IS_CTL_VP(vp)) { 76939085Srvb MARK_INT_FAIL(CODA_READLINK_STATS); 77038625Srvb return(ENOENT); 77138625Srvb } 77238625Srvb 77339085Srvb if ((coda_symlink_cache) && (VALID_SYMLINK(cp))) { /* symlink was cached */ 77438625Srvb uiop->uio_rw = UIO_READ; 77538625Srvb error = uiomove(cp->c_symlink, (int)cp->c_symlen, uiop); 77638625Srvb if (error) 77739085Srvb MARK_INT_FAIL(CODA_READLINK_STATS); 77838625Srvb else 77939085Srvb MARK_INT_SAT(CODA_READLINK_STATS); 78038625Srvb return(error); 78138625Srvb } 78238625Srvb 78338625Srvb error = venus_readlink(vtomi(vp), &cp->c_fid, cred, p, &str, &len); 78438625Srvb 78538625Srvb if (!error) { 78638625Srvb uiop->uio_rw = UIO_READ; 78738625Srvb error = uiomove(str, len, uiop); 78838625Srvb 78939085Srvb if (coda_symlink_cache) { 79038625Srvb cp->c_symlink = str; 79138625Srvb cp->c_symlen = len; 79238625Srvb cp->c_flags |= C_SYMLINK; 79338625Srvb } else 79439085Srvb CODA_FREE(str, len); 79538625Srvb } 79638625Srvb 79739085Srvb CODADEBUG(CODA_READLINK, myprintf(("in readlink result %d\n",error));) 79838625Srvb return(error); 79938625Srvb} 80038625Srvb 80138625Srvbint 80239085Srvbcoda_fsync(v) 80338625Srvb void *v; 80438625Srvb{ 80538625Srvb/* true args */ 80638625Srvb struct vop_fsync_args *ap = v; 80738625Srvb struct vnode *vp = ap->a_vp; 80838625Srvb struct cnode *cp = VTOC(vp); 80938625Srvb struct ucred *cred = ap->a_cred; 81038625Srvb struct proc *p = ap->a_p; 81138625Srvb/* locals */ 81238625Srvb struct vnode *convp = cp->c_ovp; 81338625Srvb int error; 81438625Srvb 81539085Srvb MARK_ENTRY(CODA_FSYNC_STATS); 81638625Srvb 81738625Srvb /* Check for fsync on an unmounting object */ 81838625Srvb /* The NetBSD kernel, in it's infinite wisdom, can try to fsync 81938625Srvb * after an unmount has been initiated. This is a Bad Thing, 82038625Srvb * which we have to avoid. Not a legitimate failure for stats. 82138625Srvb */ 82238625Srvb if (IS_UNMOUNTING(cp)) { 82338625Srvb return(ENODEV); 82438625Srvb } 82538625Srvb 82638625Srvb /* Check for fsync of control object. */ 82738625Srvb if (IS_CTL_VP(vp)) { 82839085Srvb MARK_INT_SAT(CODA_FSYNC_STATS); 82938625Srvb return(0); 83038625Srvb } 83138625Srvb 83238625Srvb if (convp) 83338625Srvb VOP_FSYNC(convp, cred, MNT_WAIT, p); 83438625Srvb 83538625Srvb /* 83638625Srvb * We see fsyncs with usecount == 1 then usecount == 0. 83738625Srvb * For now we ignore them. 83838625Srvb */ 83938625Srvb /* 84038625Srvb if (!vp->v_usecount) { 84139085Srvb printf("coda_fsync on vnode %p with %d usecount. c_flags = %x (%x)\n", 84238625Srvb vp, vp->v_usecount, cp->c_flags, cp->c_flags&C_PURGING); 84338625Srvb } 84438625Srvb */ 84538625Srvb 84638625Srvb /* 84738625Srvb * We can expect fsync on any vnode at all if venus is pruging it. 84838625Srvb * Venus can't very well answer the fsync request, now can it? 84938625Srvb * Hopefully, it won't have to, because hopefully, venus preserves 85038625Srvb * the (possibly untrue) invariant that it never purges an open 85138625Srvb * vnode. Hopefully. 85238625Srvb */ 85338625Srvb if (cp->c_flags & C_PURGING) { 85438625Srvb return(0); 85538625Srvb } 85638625Srvb 85738625Srvb /* needs research */ 85838625Srvb return 0; 85938625Srvb error = venus_fsync(vtomi(vp), &cp->c_fid, cred, p); 86038625Srvb 86139085Srvb CODADEBUG(CODA_FSYNC, myprintf(("in fsync result %d\n",error)); ); 86238625Srvb return(error); 86338625Srvb} 86438625Srvb 86538625Srvbint 86639085Srvbcoda_inactive(v) 86738625Srvb void *v; 86838625Srvb{ 86938625Srvb /* XXX - at the moment, inactive doesn't look at cred, and doesn't 87038625Srvb have a proc pointer. Oops. */ 87138625Srvb/* true args */ 87238625Srvb struct vop_inactive_args *ap = v; 87338625Srvb struct vnode *vp = ap->a_vp; 87438625Srvb struct cnode *cp = VTOC(vp); 87538625Srvb struct ucred *cred __attribute__((unused)) = NULL; 87638625Srvb struct proc *p __attribute__((unused)) = curproc; 87738625Srvb/* upcall decl */ 87838625Srvb/* locals */ 87938625Srvb 88038625Srvb /* We don't need to send inactive to venus - DCS */ 88139085Srvb MARK_ENTRY(CODA_INACTIVE_STATS); 88238625Srvb 88338625Srvb if (IS_CTL_VP(vp)) { 88439085Srvb MARK_INT_SAT(CODA_INACTIVE_STATS); 88538625Srvb return 0; 88638625Srvb } 88738625Srvb 88839085Srvb CODADEBUG(CODA_INACTIVE, myprintf(("in inactive, %lx.%lx.%lx. vfsp %p\n", 88938625Srvb cp->c_fid.Volume, cp->c_fid.Vnode, 89038625Srvb cp->c_fid.Unique, vp->v_mount));) 89138625Srvb 89238625Srvb /* If an array has been allocated to hold the symlink, deallocate it */ 89339085Srvb if ((coda_symlink_cache) && (VALID_SYMLINK(cp))) { 89438625Srvb if (cp->c_symlink == NULL) 89539085Srvb panic("coda_inactive: null symlink pointer in cnode"); 89638625Srvb 89739085Srvb CODA_FREE(cp->c_symlink, cp->c_symlen); 89838625Srvb cp->c_flags &= ~C_SYMLINK; 89938625Srvb cp->c_symlen = 0; 90038625Srvb } 90138625Srvb 90238625Srvb /* Remove it from the table so it can't be found. */ 90339085Srvb coda_unsave(cp); 90439085Srvb if ((struct coda_mntinfo *)(vp->v_mount->mnt_data) == NULL) { 90538625Srvb myprintf(("Help! vfsp->vfs_data was NULL, but vnode %p wasn't dying\n", vp)); 90639085Srvb panic("badness in coda_inactive\n"); 90738625Srvb } 90838625Srvb 90938625Srvb if (IS_UNMOUNTING(cp)) { 91038625Srvb#ifdef DEBUG 91139085Srvb printf("coda_inactive: IS_UNMOUNTING use %d: vp %p, cp %p\n", vp->v_usecount, vp, cp); 91238625Srvb if (cp->c_ovp != NULL) 91339085Srvb printf("coda_inactive: cp->ovp != NULL use %d: vp %p, cp %p\n", 91438625Srvb vp->v_usecount, vp, cp); 91538625Srvb#endif 91638759Srvb lockmgr(&cp->c_lock, LK_RELEASE, &vp->v_interlock, p); 91738625Srvb } else { 91839650Srvb#ifdef OLD_DIAGNOSTIC 91938625Srvb if (CTOV(cp)->v_usecount) { 92039085Srvb panic("coda_inactive: nonzero reference count"); 92138625Srvb } 92238625Srvb if (cp->c_ovp != NULL) { 92339085Srvb panic("coda_inactive: cp->ovp != NULL"); 92438625Srvb } 92538625Srvb#endif 92638759Srvb VOP_UNLOCK(vp, 0, p); 92738625Srvb vgone(vp); 92838625Srvb } 92938625Srvb 93039085Srvb MARK_INT_SAT(CODA_INACTIVE_STATS); 93138625Srvb return(0); 93238625Srvb} 93338625Srvb 93438625Srvb/* 93538625Srvb * Remote file system operations having to do with directory manipulation. 93638625Srvb */ 93738625Srvb 93838625Srvb/* 93938625Srvb * It appears that in NetBSD, lookup is supposed to return the vnode locked 94038625Srvb */ 94138625Srvbint 94239085Srvbcoda_lookup(v) 94338625Srvb void *v; 94438625Srvb{ 94538625Srvb/* true args */ 94638625Srvb struct vop_lookup_args *ap = v; 94738625Srvb struct vnode *dvp = ap->a_dvp; 94838625Srvb struct cnode *dcp = VTOC(dvp); 94938625Srvb struct vnode **vpp = ap->a_vpp; 95038625Srvb /* 95138625Srvb * It looks as though ap->a_cnp->ni_cnd->cn_nameptr holds the rest 95238625Srvb * of the string to xlate, and that we must try to get at least 95338625Srvb * ap->a_cnp->ni_cnd->cn_namelen of those characters to macth. I 95438625Srvb * could be wrong. 95538625Srvb */ 95638625Srvb struct componentname *cnp = ap->a_cnp; 95738625Srvb struct ucred *cred = cnp->cn_cred; 95838625Srvb struct proc *p = cnp->cn_proc; 95938625Srvb/* locals */ 96038625Srvb struct cnode *cp; 96138625Srvb const char *nm = cnp->cn_nameptr; 96238625Srvb int len = cnp->cn_namelen; 96338625Srvb ViceFid VFid; 96438625Srvb int vtype; 96538625Srvb int error = 0; 96638625Srvb 96739085Srvb MARK_ENTRY(CODA_LOOKUP_STATS); 96838625Srvb 96939085Srvb CODADEBUG(CODA_LOOKUP, myprintf(("lookup: %s in %lx.%lx.%lx\n", 97038625Srvb nm, dcp->c_fid.Volume, 97138625Srvb dcp->c_fid.Vnode, dcp->c_fid.Unique));); 97238625Srvb 97338625Srvb /* Check for lookup of control object. */ 97438625Srvb if (IS_CTL_NAME(dvp, nm, len)) { 97539085Srvb *vpp = coda_ctlvp; 97638625Srvb vref(*vpp); 97739085Srvb MARK_INT_SAT(CODA_LOOKUP_STATS); 97838625Srvb goto exit; 97938625Srvb } 98038625Srvb 98139085Srvb if (len+1 > CODA_MAXNAMLEN) { 98239085Srvb MARK_INT_FAIL(CODA_LOOKUP_STATS); 98339085Srvb CODADEBUG(CODA_LOOKUP, myprintf(("name too long: lookup, %lx.%lx.%lx(%s)\n", 98438625Srvb dcp->c_fid.Volume, dcp->c_fid.Vnode, 98538625Srvb dcp->c_fid.Unique, nm));); 98638625Srvb *vpp = (struct vnode *)0; 98738625Srvb error = EINVAL; 98838625Srvb goto exit; 98938625Srvb } 99038625Srvb /* First try to look the file up in the cfs name cache */ 99138625Srvb /* lock the parent vnode? */ 99239085Srvb cp = coda_nc_lookup(dcp, nm, len, cred); 99338625Srvb if (cp) { 99438625Srvb *vpp = CTOV(cp); 99538625Srvb vref(*vpp); 99639085Srvb CODADEBUG(CODA_LOOKUP, 99738625Srvb myprintf(("lookup result %d vpp %p\n",error,*vpp));) 99838625Srvb } else { 99938625Srvb 100038625Srvb /* The name wasn't cached, so we need to contact Venus */ 100138625Srvb error = venus_lookup(vtomi(dvp), &dcp->c_fid, nm, len, cred, p, &VFid, &vtype); 100238625Srvb 100338625Srvb if (error) { 100439085Srvb MARK_INT_FAIL(CODA_LOOKUP_STATS); 100539085Srvb CODADEBUG(CODA_LOOKUP, myprintf(("lookup error on %lx.%lx.%lx(%s)%d\n", 100638625Srvb dcp->c_fid.Volume, dcp->c_fid.Vnode, dcp->c_fid.Unique, nm, error));) 100738625Srvb *vpp = (struct vnode *)0; 100838625Srvb } else { 100939085Srvb MARK_INT_SAT(CODA_LOOKUP_STATS); 101039085Srvb CODADEBUG(CODA_LOOKUP, 101138625Srvb myprintf(("lookup: vol %lx vno %lx uni %lx type %o result %d\n", 101238625Srvb VFid.Volume, VFid.Vnode, VFid.Unique, vtype, 101338625Srvb error)); ) 101438625Srvb 101539085Srvb cp = make_coda_node(&VFid, dvp->v_mount, vtype); 101638625Srvb *vpp = CTOV(cp); 101738625Srvb 101838625Srvb /* enter the new vnode in the Name Cache only if the top bit isn't set */ 101938625Srvb /* And don't enter a new vnode for an invalid one! */ 102039085Srvb if (!(vtype & CODA_NOCACHE)) 102139085Srvb coda_nc_enter(VTOC(dvp), nm, len, cred, VTOC(*vpp)); 102238625Srvb } 102338625Srvb } 102438625Srvb 102538625Srvb exit: 102638625Srvb /* 102738625Srvb * If we are creating, and this was the last name to be looked up, 102838625Srvb * and the error was ENOENT, then there really shouldn't be an 102938625Srvb * error and we can make the leaf NULL and return success. Since 103038625Srvb * this is supposed to work under Mach as well as NetBSD, we're 103138625Srvb * leaving this fn wrapped. We also must tell lookup/namei that 103238625Srvb * we need to save the last component of the name. (Create will 103338625Srvb * have to free the name buffer later...lucky us...) 103438625Srvb */ 103538625Srvb if (((cnp->cn_nameiop == CREATE) || (cnp->cn_nameiop == RENAME)) 103638625Srvb && (cnp->cn_flags & ISLASTCN) 103738625Srvb && (error == ENOENT)) 103838625Srvb { 103938625Srvb error = EJUSTRETURN; 104038625Srvb cnp->cn_flags |= SAVENAME; 104138625Srvb *ap->a_vpp = NULL; 104238625Srvb } 104338625Srvb 104438625Srvb /* 104538625Srvb * If we are removing, and we are at the last element, and we 104638625Srvb * found it, then we need to keep the name around so that the 104738625Srvb * removal will go ahead as planned. Unfortunately, this will 104838625Srvb * probably also lock the to-be-removed vnode, which may or may 104938625Srvb * not be a good idea. I'll have to look at the bits of 105039085Srvb * coda_remove to make sure. We'll only save the name if we did in 105139085Srvb * fact find the name, otherwise coda_remove won't have a chance 105238625Srvb * to free the pathname. 105338625Srvb */ 105438625Srvb if ((cnp->cn_nameiop == DELETE) 105538625Srvb && (cnp->cn_flags & ISLASTCN) 105638625Srvb && !error) 105738625Srvb { 105838625Srvb cnp->cn_flags |= SAVENAME; 105938625Srvb } 106038625Srvb 106138625Srvb /* 106238625Srvb * If the lookup went well, we need to (potentially?) unlock the 106338625Srvb * parent, and lock the child. We are only responsible for 106438625Srvb * checking to see if the parent is supposed to be unlocked before 106538625Srvb * we return. We must always lock the child (provided there is 106638625Srvb * one, and (the parent isn't locked or it isn't the same as the 106738625Srvb * parent.) Simple, huh? We can never leave the parent locked unless 106838625Srvb * we are ISLASTCN 106938625Srvb */ 107038625Srvb if (!error || (error == EJUSTRETURN)) { 107138625Srvb if (!(cnp->cn_flags & LOCKPARENT) || !(cnp->cn_flags & ISLASTCN)) { 107238759Srvb if ((error = VOP_UNLOCK(dvp, 0, p))) { 107338625Srvb return error; 107438625Srvb } 107538625Srvb /* 107638625Srvb * The parent is unlocked. As long as there is a child, 107738625Srvb * lock it without bothering to check anything else. 107838625Srvb */ 107938625Srvb if (*ap->a_vpp) { 108038759Srvb if ((error = VOP_LOCK(*ap->a_vpp, LK_EXCLUSIVE, p))) { 108139085Srvb printf("coda_lookup: "); 108238625Srvb panic("unlocked parent but couldn't lock child"); 108338625Srvb } 108438625Srvb } 108538625Srvb } else { 108638625Srvb /* The parent is locked, and may be the same as the child */ 108738625Srvb if (*ap->a_vpp && (*ap->a_vpp != dvp)) { 108838625Srvb /* Different, go ahead and lock it. */ 108938759Srvb if ((error = VOP_LOCK(*ap->a_vpp, LK_EXCLUSIVE, p))) { 109039085Srvb printf("coda_lookup: "); 109138625Srvb panic("unlocked parent but couldn't lock child"); 109238625Srvb } 109338625Srvb } 109438625Srvb } 109538625Srvb } else { 109638625Srvb /* If the lookup failed, we need to ensure that the leaf is NULL */ 109738625Srvb /* Don't change any locking? */ 109838625Srvb *ap->a_vpp = NULL; 109938625Srvb } 110038625Srvb return(error); 110138625Srvb} 110238625Srvb 110338625Srvb/*ARGSUSED*/ 110438625Srvbint 110539085Srvbcoda_create(v) 110638625Srvb void *v; 110738625Srvb{ 110838625Srvb/* true args */ 110938625Srvb struct vop_create_args *ap = v; 111038625Srvb struct vnode *dvp = ap->a_dvp; 111138625Srvb struct cnode *dcp = VTOC(dvp); 111238625Srvb struct vattr *va = ap->a_vap; 111338625Srvb int exclusive = 1; 111438625Srvb int mode = ap->a_vap->va_mode; 111538625Srvb struct vnode **vpp = ap->a_vpp; 111638625Srvb struct componentname *cnp = ap->a_cnp; 111738625Srvb struct ucred *cred = cnp->cn_cred; 111838625Srvb struct proc *p = cnp->cn_proc; 111938625Srvb/* locals */ 112038625Srvb int error; 112138625Srvb struct cnode *cp; 112238625Srvb const char *nm = cnp->cn_nameptr; 112338625Srvb int len = cnp->cn_namelen; 112438625Srvb ViceFid VFid; 112538625Srvb struct vattr attr; 112638625Srvb 112739085Srvb MARK_ENTRY(CODA_CREATE_STATS); 112838625Srvb 112938625Srvb /* All creates are exclusive XXX */ 113038625Srvb /* I'm assuming the 'mode' argument is the file mode bits XXX */ 113138625Srvb 113238625Srvb /* Check for create of control object. */ 113338625Srvb if (IS_CTL_NAME(dvp, nm, len)) { 113438625Srvb *vpp = (struct vnode *)0; 113539085Srvb MARK_INT_FAIL(CODA_CREATE_STATS); 113638625Srvb return(EACCES); 113738625Srvb } 113838625Srvb 113938625Srvb error = venus_create(vtomi(dvp), &dcp->c_fid, nm, len, exclusive, mode, va, cred, p, &VFid, &attr); 114038625Srvb 114138625Srvb if (!error) { 114238625Srvb 114338625Srvb /* If this is an exclusive create, panic if the file already exists. */ 114438625Srvb /* Venus should have detected the file and reported EEXIST. */ 114538625Srvb 114638625Srvb if ((exclusive == 1) && 114739085Srvb (coda_find(&VFid) != NULL)) 114838625Srvb panic("cnode existed for newly created file!"); 114938625Srvb 115039085Srvb cp = make_coda_node(&VFid, dvp->v_mount, attr.va_type); 115138625Srvb *vpp = CTOV(cp); 115238625Srvb 115338625Srvb /* Update va to reflect the new attributes. */ 115438625Srvb (*va) = attr; 115538625Srvb 115638625Srvb /* Update the attribute cache and mark it as valid */ 115739085Srvb if (coda_attr_cache) { 115838625Srvb VTOC(*vpp)->c_vattr = attr; 115938625Srvb VTOC(*vpp)->c_flags |= C_VATTR; 116038625Srvb } 116138625Srvb 116238625Srvb /* Invalidate the parent's attr cache, the modification time has changed */ 116338625Srvb VTOC(dvp)->c_flags &= ~C_VATTR; 116438625Srvb 116538625Srvb /* enter the new vnode in the Name Cache */ 116639085Srvb coda_nc_enter(VTOC(dvp), nm, len, cred, VTOC(*vpp)); 116738625Srvb 116839085Srvb CODADEBUG(CODA_CREATE, 116938625Srvb myprintf(("create: (%lx.%lx.%lx), result %d\n", 117038625Srvb VFid.Volume, VFid.Vnode, VFid.Unique, error)); ) 117138625Srvb } else { 117238625Srvb *vpp = (struct vnode *)0; 117339085Srvb CODADEBUG(CODA_CREATE, myprintf(("create error %d\n", error));) 117438625Srvb } 117538625Srvb 117638625Srvb if (!error) { 117738625Srvb if (cnp->cn_flags & LOCKLEAF) { 117838759Srvb if ((error = VOP_LOCK(*ap->a_vpp, LK_EXCLUSIVE, p))) { 117939085Srvb printf("coda_create: "); 118038625Srvb panic("unlocked parent but couldn't lock child"); 118138625Srvb } 118238625Srvb } 118339650Srvb#ifdef OLD_DIAGNOSTIC 118438625Srvb else { 118539085Srvb printf("coda_create: LOCKLEAF not set!\n"); 118638625Srvb } 118739650Srvb#endif 118838625Srvb } 118938625Srvb return(error); 119038625Srvb} 119138625Srvb 119238625Srvbint 119339085Srvbcoda_remove(v) 119438625Srvb void *v; 119538625Srvb{ 119638625Srvb/* true args */ 119738625Srvb struct vop_remove_args *ap = v; 119838625Srvb struct vnode *dvp = ap->a_dvp; 119938625Srvb struct cnode *cp = VTOC(dvp); 120038625Srvb struct componentname *cnp = ap->a_cnp; 120138625Srvb struct ucred *cred = cnp->cn_cred; 120238625Srvb struct proc *p = cnp->cn_proc; 120338625Srvb/* locals */ 120438625Srvb int error; 120538625Srvb const char *nm = cnp->cn_nameptr; 120638625Srvb int len = cnp->cn_namelen; 120738625Srvb struct cnode *tp; 120838625Srvb 120939085Srvb MARK_ENTRY(CODA_REMOVE_STATS); 121038625Srvb 121139085Srvb CODADEBUG(CODA_REMOVE, myprintf(("remove: %s in %lx.%lx.%lx\n", 121238625Srvb nm, cp->c_fid.Volume, cp->c_fid.Vnode, 121338625Srvb cp->c_fid.Unique));); 121438625Srvb 121539085Srvb /* Remove the file's entry from the CODA Name Cache */ 121638625Srvb /* We're being conservative here, it might be that this person 121738625Srvb * doesn't really have sufficient access to delete the file 121838625Srvb * but we feel zapping the entry won't really hurt anyone -- dcs 121938625Srvb */ 122038625Srvb /* I'm gonna go out on a limb here. If a file and a hardlink to it 122138625Srvb * exist, and one is removed, the link count on the other will be 122238625Srvb * off by 1. We could either invalidate the attrs if cached, or 122338625Srvb * fix them. I'll try to fix them. DCS 11/8/94 122438625Srvb */ 122539085Srvb tp = coda_nc_lookup(VTOC(dvp), nm, len, cred); 122638625Srvb if (tp) { 122738625Srvb if (VALID_VATTR(tp)) { /* If attrs are cached */ 122838625Srvb if (tp->c_vattr.va_nlink > 1) { /* If it's a hard link */ 122938625Srvb tp->c_vattr.va_nlink--; 123038625Srvb } 123138625Srvb } 123238625Srvb 123339085Srvb coda_nc_zapfile(VTOC(dvp), nm, len); 123438625Srvb /* No need to flush it if it doesn't exist! */ 123538625Srvb } 123638625Srvb /* Invalidate the parent's attr cache, the modification time has changed */ 123738625Srvb VTOC(dvp)->c_flags &= ~C_VATTR; 123838625Srvb 123938625Srvb /* Check for remove of control object. */ 124038625Srvb if (IS_CTL_NAME(dvp, nm, len)) { 124139085Srvb MARK_INT_FAIL(CODA_REMOVE_STATS); 124238625Srvb return(ENOENT); 124338625Srvb } 124438625Srvb 124538625Srvb error = venus_remove(vtomi(dvp), &cp->c_fid, nm, len, cred, p); 124638625Srvb 124739085Srvb CODADEBUG(CODA_REMOVE, myprintf(("in remove result %d\n",error)); ) 124838625Srvb 124938625Srvb return(error); 125038625Srvb} 125138625Srvb 125238625Srvbint 125339085Srvbcoda_link(v) 125438625Srvb void *v; 125538625Srvb{ 125638625Srvb/* true args */ 125738625Srvb struct vop_link_args *ap = v; 125838625Srvb struct vnode *vp = ap->a_vp; 125938625Srvb struct cnode *cp = VTOC(vp); 126038625Srvb struct vnode *tdvp = ap->a_tdvp; 126138625Srvb struct cnode *tdcp = VTOC(tdvp); 126238625Srvb struct componentname *cnp = ap->a_cnp; 126338625Srvb struct ucred *cred = cnp->cn_cred; 126438625Srvb struct proc *p = cnp->cn_proc; 126538625Srvb/* locals */ 126638625Srvb int error; 126738625Srvb const char *nm = cnp->cn_nameptr; 126838625Srvb int len = cnp->cn_namelen; 126938625Srvb 127039085Srvb MARK_ENTRY(CODA_LINK_STATS); 127138625Srvb 127239085Srvb if (codadebug & CODADBGMSK(CODA_LINK)) { 127338625Srvb 127438625Srvb myprintf(("nb_link: vp fid: (%lx.%lx.%lx)\n", 127538625Srvb cp->c_fid.Volume, cp->c_fid.Vnode, cp->c_fid.Unique)); 127638625Srvb myprintf(("nb_link: tdvp fid: (%lx.%lx.%lx)\n", 127738625Srvb tdcp->c_fid.Volume, tdcp->c_fid.Vnode, tdcp->c_fid.Unique)); 127838625Srvb 127938625Srvb } 128039085Srvb if (codadebug & CODADBGMSK(CODA_LINK)) { 128138625Srvb myprintf(("link: vp fid: (%lx.%lx.%lx)\n", 128238625Srvb cp->c_fid.Volume, cp->c_fid.Vnode, cp->c_fid.Unique)); 128338625Srvb myprintf(("link: tdvp fid: (%lx.%lx.%lx)\n", 128438625Srvb tdcp->c_fid.Volume, tdcp->c_fid.Vnode, tdcp->c_fid.Unique)); 128538625Srvb 128638625Srvb } 128738625Srvb 128838625Srvb /* Check for link to/from control object. */ 128938625Srvb if (IS_CTL_NAME(tdvp, nm, len) || IS_CTL_VP(vp)) { 129039085Srvb MARK_INT_FAIL(CODA_LINK_STATS); 129138625Srvb return(EACCES); 129238625Srvb } 129338625Srvb 129438625Srvb error = venus_link(vtomi(vp), &cp->c_fid, &tdcp->c_fid, nm, len, cred, p); 129538625Srvb 129638625Srvb /* Invalidate the parent's attr cache, the modification time has changed */ 129738625Srvb VTOC(tdvp)->c_flags &= ~C_VATTR; 129838625Srvb VTOC(vp)->c_flags &= ~C_VATTR; 129938625Srvb 130039085Srvb CODADEBUG(CODA_LINK, myprintf(("in link result %d\n",error)); ) 130138625Srvb 130238625Srvb return(error); 130338625Srvb} 130438625Srvb 130538625Srvbint 130639085Srvbcoda_rename(v) 130738625Srvb void *v; 130838625Srvb{ 130938625Srvb/* true args */ 131038625Srvb struct vop_rename_args *ap = v; 131138625Srvb struct vnode *odvp = ap->a_fdvp; 131238625Srvb struct cnode *odcp = VTOC(odvp); 131338625Srvb struct componentname *fcnp = ap->a_fcnp; 131438625Srvb struct vnode *ndvp = ap->a_tdvp; 131538625Srvb struct cnode *ndcp = VTOC(ndvp); 131638625Srvb struct componentname *tcnp = ap->a_tcnp; 131738625Srvb struct ucred *cred = fcnp->cn_cred; 131838625Srvb struct proc *p = fcnp->cn_proc; 131938625Srvb/* true args */ 132038625Srvb int error; 132138625Srvb const char *fnm = fcnp->cn_nameptr; 132238625Srvb int flen = fcnp->cn_namelen; 132338625Srvb const char *tnm = tcnp->cn_nameptr; 132438625Srvb int tlen = tcnp->cn_namelen; 132538625Srvb 132639085Srvb MARK_ENTRY(CODA_RENAME_STATS); 132738625Srvb 132838625Srvb /* Hmmm. The vnodes are already looked up. Perhaps they are locked? 132938625Srvb This could be Bad. XXX */ 133039650Srvb#ifdef OLD_DIAGNOSTIC 133138625Srvb if ((fcnp->cn_cred != tcnp->cn_cred) 133238625Srvb || (fcnp->cn_proc != tcnp->cn_proc)) 133338625Srvb { 133439085Srvb panic("coda_rename: component names don't agree"); 133538625Srvb } 133639650Srvb#endif 133738625Srvb 133838625Srvb /* Check for rename involving control object. */ 133938625Srvb if (IS_CTL_NAME(odvp, fnm, flen) || IS_CTL_NAME(ndvp, tnm, tlen)) { 134039085Srvb MARK_INT_FAIL(CODA_RENAME_STATS); 134138625Srvb return(EACCES); 134238625Srvb } 134338625Srvb 134438625Srvb /* Problem with moving directories -- need to flush entry for .. */ 134538625Srvb if (odvp != ndvp) { 134639085Srvb struct cnode *ovcp = coda_nc_lookup(VTOC(odvp), fnm, flen, cred); 134738625Srvb if (ovcp) { 134838625Srvb struct vnode *ovp = CTOV(ovcp); 134938625Srvb if ((ovp) && 135038625Srvb (ovp->v_type == VDIR)) /* If it's a directory */ 135139085Srvb coda_nc_zapfile(VTOC(ovp),"..", 2); 135238625Srvb } 135338625Srvb } 135438625Srvb 135538625Srvb /* Remove the entries for both source and target files */ 135639085Srvb coda_nc_zapfile(VTOC(odvp), fnm, flen); 135739085Srvb coda_nc_zapfile(VTOC(ndvp), tnm, tlen); 135838625Srvb 135938625Srvb /* Invalidate the parent's attr cache, the modification time has changed */ 136038625Srvb VTOC(odvp)->c_flags &= ~C_VATTR; 136138625Srvb VTOC(ndvp)->c_flags &= ~C_VATTR; 136238625Srvb 136339085Srvb if (flen+1 > CODA_MAXNAMLEN) { 136439085Srvb MARK_INT_FAIL(CODA_RENAME_STATS); 136538625Srvb error = EINVAL; 136638625Srvb goto exit; 136738625Srvb } 136838625Srvb 136939085Srvb if (tlen+1 > CODA_MAXNAMLEN) { 137039085Srvb MARK_INT_FAIL(CODA_RENAME_STATS); 137138625Srvb error = EINVAL; 137238625Srvb goto exit; 137338625Srvb } 137438625Srvb 137538625Srvb error = venus_rename(vtomi(odvp), &odcp->c_fid, &ndcp->c_fid, fnm, flen, tnm, tlen, cred, p); 137638625Srvb 137738625Srvb exit: 137839085Srvb CODADEBUG(CODA_RENAME, myprintf(("in rename result %d\n",error));) 137938625Srvb /* XXX - do we need to call cache pureg on the moved vnode? */ 138038625Srvb cache_purge(ap->a_fvp); 138138625Srvb 138238625Srvb /* It seems to be incumbent on us to drop locks on all four vnodes */ 138338625Srvb /* From-vnodes are not locked, only ref'd. To-vnodes are locked. */ 138438625Srvb 138538625Srvb vrele(ap->a_fvp); 138638625Srvb vrele(odvp); 138738625Srvb 138838625Srvb if (ap->a_tvp) { 138938625Srvb if (ap->a_tvp == ndvp) { 139038625Srvb vrele(ap->a_tvp); 139138625Srvb } else { 139238625Srvb vput(ap->a_tvp); 139338625Srvb } 139438625Srvb } 139538625Srvb 139638625Srvb vput(ndvp); 139738625Srvb return(error); 139838625Srvb} 139938625Srvb 140038625Srvbint 140139085Srvbcoda_mkdir(v) 140238625Srvb void *v; 140338625Srvb{ 140438625Srvb/* true args */ 140538625Srvb struct vop_mkdir_args *ap = v; 140638625Srvb struct vnode *dvp = ap->a_dvp; 140738625Srvb struct cnode *dcp = VTOC(dvp); 140838625Srvb struct componentname *cnp = ap->a_cnp; 140938625Srvb register struct vattr *va = ap->a_vap; 141038625Srvb struct vnode **vpp = ap->a_vpp; 141138625Srvb struct ucred *cred = cnp->cn_cred; 141238625Srvb struct proc *p = cnp->cn_proc; 141338625Srvb/* locals */ 141438625Srvb int error; 141538625Srvb const char *nm = cnp->cn_nameptr; 141638625Srvb int len = cnp->cn_namelen; 141738625Srvb struct cnode *cp; 141838625Srvb ViceFid VFid; 141938625Srvb struct vattr ova; 142038625Srvb 142139085Srvb MARK_ENTRY(CODA_MKDIR_STATS); 142238625Srvb 142338625Srvb /* Check for mkdir of target object. */ 142438625Srvb if (IS_CTL_NAME(dvp, nm, len)) { 142538625Srvb *vpp = (struct vnode *)0; 142639085Srvb MARK_INT_FAIL(CODA_MKDIR_STATS); 142738625Srvb return(EACCES); 142838625Srvb } 142938625Srvb 143039085Srvb if (len+1 > CODA_MAXNAMLEN) { 143138625Srvb *vpp = (struct vnode *)0; 143239085Srvb MARK_INT_FAIL(CODA_MKDIR_STATS); 143338625Srvb return(EACCES); 143438625Srvb } 143538625Srvb 143638625Srvb error = venus_mkdir(vtomi(dvp), &dcp->c_fid, nm, len, va, cred, p, &VFid, &ova); 143738625Srvb 143838625Srvb if (!error) { 143939085Srvb if (coda_find(&VFid) != NULL) 144038625Srvb panic("cnode existed for newly created directory!"); 144138625Srvb 144238625Srvb 144339085Srvb cp = make_coda_node(&VFid, dvp->v_mount, va->va_type); 144438625Srvb *vpp = CTOV(cp); 144538625Srvb 144638625Srvb /* enter the new vnode in the Name Cache */ 144739085Srvb coda_nc_enter(VTOC(dvp), nm, len, cred, VTOC(*vpp)); 144838625Srvb 144938625Srvb /* as a side effect, enter "." and ".." for the directory */ 145039085Srvb coda_nc_enter(VTOC(*vpp), ".", 1, cred, VTOC(*vpp)); 145139085Srvb coda_nc_enter(VTOC(*vpp), "..", 2, cred, VTOC(dvp)); 145238625Srvb 145339085Srvb if (coda_attr_cache) { 145438625Srvb VTOC(*vpp)->c_vattr = ova; /* update the attr cache */ 145538625Srvb VTOC(*vpp)->c_flags |= C_VATTR; /* Valid attributes in cnode */ 145638625Srvb } 145738625Srvb 145838625Srvb /* Invalidate the parent's attr cache, the modification time has changed */ 145938625Srvb VTOC(dvp)->c_flags &= ~C_VATTR; 146038625Srvb 146139085Srvb CODADEBUG( CODA_MKDIR, myprintf(("mkdir: (%lx.%lx.%lx) result %d\n", 146238625Srvb VFid.Volume, VFid.Vnode, VFid.Unique, error)); ) 146338625Srvb } else { 146438625Srvb *vpp = (struct vnode *)0; 146539085Srvb CODADEBUG(CODA_MKDIR, myprintf(("mkdir error %d\n",error));) 146638625Srvb } 146738625Srvb 146838625Srvb return(error); 146938625Srvb} 147038625Srvb 147138625Srvbint 147239085Srvbcoda_rmdir(v) 147338625Srvb void *v; 147438625Srvb{ 147538625Srvb/* true args */ 147638625Srvb struct vop_rmdir_args *ap = v; 147738625Srvb struct vnode *dvp = ap->a_dvp; 147838625Srvb struct cnode *dcp = VTOC(dvp); 147938625Srvb struct componentname *cnp = ap->a_cnp; 148038625Srvb struct ucred *cred = cnp->cn_cred; 148138625Srvb struct proc *p = cnp->cn_proc; 148238625Srvb/* true args */ 148338625Srvb int error; 148438625Srvb const char *nm = cnp->cn_nameptr; 148538625Srvb int len = cnp->cn_namelen; 148638625Srvb struct cnode *cp; 148738625Srvb 148839085Srvb MARK_ENTRY(CODA_RMDIR_STATS); 148938625Srvb 149038625Srvb /* Check for rmdir of control object. */ 149138625Srvb if (IS_CTL_NAME(dvp, nm, len)) { 149239085Srvb MARK_INT_FAIL(CODA_RMDIR_STATS); 149338625Srvb return(ENOENT); 149438625Srvb } 149538625Srvb 149638625Srvb /* We're being conservative here, it might be that this person 149738625Srvb * doesn't really have sufficient access to delete the file 149838625Srvb * but we feel zapping the entry won't really hurt anyone -- dcs 149938625Srvb */ 150038625Srvb /* 150138625Srvb * As a side effect of the rmdir, remove any entries for children of 150238625Srvb * the directory, especially "." and "..". 150338625Srvb */ 150439085Srvb cp = coda_nc_lookup(dcp, nm, len, cred); 150539085Srvb if (cp) coda_nc_zapParentfid(&(cp->c_fid), NOT_DOWNCALL); 150638625Srvb 150739085Srvb /* Remove the file's entry from the CODA Name Cache */ 150839085Srvb coda_nc_zapfile(dcp, nm, len); 150938625Srvb 151038625Srvb /* Invalidate the parent's attr cache, the modification time has changed */ 151138625Srvb dcp->c_flags &= ~C_VATTR; 151238625Srvb 151338625Srvb error = venus_rmdir(vtomi(dvp), &dcp->c_fid, nm, len, cred, p); 151438625Srvb 151539085Srvb CODADEBUG(CODA_RMDIR, myprintf(("in rmdir result %d\n", error)); ) 151638625Srvb 151738625Srvb return(error); 151838625Srvb} 151938625Srvb 152038625Srvbint 152139085Srvbcoda_symlink(v) 152238625Srvb void *v; 152338625Srvb{ 152438625Srvb/* true args */ 152538625Srvb struct vop_symlink_args *ap = v; 152638625Srvb struct vnode *tdvp = ap->a_dvp; 152738625Srvb struct cnode *tdcp = VTOC(tdvp); 152838625Srvb struct componentname *cnp = ap->a_cnp; 152938625Srvb struct vattr *tva = ap->a_vap; 153038625Srvb char *path = ap->a_target; 153138625Srvb struct ucred *cred = cnp->cn_cred; 153238625Srvb struct proc *p = cnp->cn_proc; 153353131Seivind struct vnode **vpp = ap->a_vpp; 153438625Srvb/* locals */ 153538625Srvb int error; 153638625Srvb /* 153739085Srvb * XXX I'm assuming the following things about coda_symlink's 153838625Srvb * arguments: 153938625Srvb * t(foo) is the new name/parent/etc being created. 154038625Srvb * lname is the contents of the new symlink. 154138625Srvb */ 154238759Srvb char *nm = cnp->cn_nameptr; 154338625Srvb int len = cnp->cn_namelen; 154438625Srvb int plen = strlen(path); 154538625Srvb 154638625Srvb /* 154738625Srvb * Here's the strategy for the moment: perform the symlink, then 154838625Srvb * do a lookup to grab the resulting vnode. I know this requires 154938625Srvb * two communications with Venus for a new sybolic link, but 155038625Srvb * that's the way the ball bounces. I don't yet want to change 155138625Srvb * the way the Mach symlink works. When Mach support is 155238625Srvb * deprecated, we should change symlink so that the common case 155338625Srvb * returns the resultant vnode in a vpp argument. 155438625Srvb */ 155538625Srvb 155639085Srvb MARK_ENTRY(CODA_SYMLINK_STATS); 155738625Srvb 155838625Srvb /* Check for symlink of control object. */ 155938625Srvb if (IS_CTL_NAME(tdvp, nm, len)) { 156039085Srvb MARK_INT_FAIL(CODA_SYMLINK_STATS); 156138625Srvb return(EACCES); 156238625Srvb } 156338625Srvb 156439085Srvb if (plen+1 > CODA_MAXPATHLEN) { 156539085Srvb MARK_INT_FAIL(CODA_SYMLINK_STATS); 156638625Srvb return(EINVAL); 156738625Srvb } 156838625Srvb 156939085Srvb if (len+1 > CODA_MAXNAMLEN) { 157039085Srvb MARK_INT_FAIL(CODA_SYMLINK_STATS); 157138625Srvb error = EINVAL; 157238625Srvb goto exit; 157338625Srvb } 157438625Srvb 157538625Srvb error = venus_symlink(vtomi(tdvp), &tdcp->c_fid, path, plen, nm, len, tva, cred, p); 157638625Srvb 157738625Srvb /* Invalidate the parent's attr cache, the modification time has changed */ 157838625Srvb tdcp->c_flags &= ~C_VATTR; 157938625Srvb 158053131Seivind if (error == 0) 158153131Seivind error = VOP_LOOKUP(tdvp, vpp, cnp); 158238625Srvb 158338625Srvb exit: 158439085Srvb CODADEBUG(CODA_SYMLINK, myprintf(("in symlink result %d\n",error)); ) 158538625Srvb return(error); 158638625Srvb} 158738625Srvb 158838625Srvb/* 158938625Srvb * Read directory entries. 159038625Srvb */ 159138625Srvbint 159239085Srvbcoda_readdir(v) 159338625Srvb void *v; 159438625Srvb{ 159538625Srvb/* true args */ 159638625Srvb struct vop_readdir_args *ap = v; 159738625Srvb struct vnode *vp = ap->a_vp; 159838625Srvb struct cnode *cp = VTOC(vp); 159938625Srvb register struct uio *uiop = ap->a_uio; 160038625Srvb struct ucred *cred = ap->a_cred; 160138625Srvb int *eofflag = ap->a_eofflag; 160238625Srvb u_long **cookies = ap->a_cookies; 160338625Srvb int *ncookies = ap->a_ncookies; 160438625Srvb struct proc *p = ap->a_uio->uio_procp; 160538625Srvb/* upcall decl */ 160638625Srvb/* locals */ 160738625Srvb int error = 0; 160838625Srvb 160939085Srvb MARK_ENTRY(CODA_READDIR_STATS); 161038625Srvb 161149524Sbde CODADEBUG(CODA_READDIR, myprintf(("coda_readdir(%p, %d, %lld, %d)\n", 161249524Sbde (void *)uiop->uio_iov->iov_base, 161349524Sbde uiop->uio_resid, 161449524Sbde (long long)uiop->uio_offset, 161549524Sbde uiop->uio_segflg)); ) 161638625Srvb 161738625Srvb /* Check for readdir of control object. */ 161838625Srvb if (IS_CTL_VP(vp)) { 161939085Srvb MARK_INT_FAIL(CODA_READDIR_STATS); 162038625Srvb return(ENOENT); 162138625Srvb } 162238625Srvb 162338759Srvb { 162438625Srvb /* If directory is not already open do an "internal open" on it. */ 162538625Srvb int opened_internally = 0; 162638625Srvb if (cp->c_ovp == NULL) { 162738625Srvb opened_internally = 1; 162839085Srvb MARK_INT_GEN(CODA_OPEN_STATS); 162938625Srvb error = VOP_OPEN(vp, FREAD, cred, p); 163039085Srvbprintf("coda_readdir: Internally Opening %p\n", vp); 163138625Srvb if (error) { 163239085Srvb printf("coda_readdir: VOP_OPEN on container failed %d\n", error); 163338625Srvb return (error); 163438625Srvb } 163538625Srvb if (vp->v_type == VREG) { 163642315Seivind error = vfs_object_create(vp, p, cred); 163738625Srvb if (error != 0) { 163839085Srvb printf("coda_readdir: vfs_object_create() returns %d\n", error); 163938625Srvb vput(vp); 164038625Srvb } 164138625Srvb } 164238625Srvb if (error) return(error); 164338625Srvb } 164438625Srvb 164538625Srvb /* Have UFS handle the call. */ 164639085Srvb CODADEBUG(CODA_READDIR, myprintf(("indirect readdir: fid = (%lx.%lx.%lx), refcnt = %d\n",cp->c_fid.Volume, cp->c_fid.Vnode, cp->c_fid.Unique, vp->v_usecount)); ) 164738625Srvb error = VOP_READDIR(cp->c_ovp, uiop, cred, eofflag, ncookies, 164838625Srvb cookies); 164938625Srvb 165038625Srvb if (error) 165139085Srvb MARK_INT_FAIL(CODA_READDIR_STATS); 165238625Srvb else 165339085Srvb MARK_INT_SAT(CODA_READDIR_STATS); 165438625Srvb 165538625Srvb /* Do an "internal close" if necessary. */ 165638625Srvb if (opened_internally) { 165739085Srvb MARK_INT_GEN(CODA_CLOSE_STATS); 165838625Srvb (void)VOP_CLOSE(vp, FREAD, cred, p); 165938625Srvb } 166038625Srvb } 166138625Srvb 166238625Srvb return(error); 166338625Srvb} 166438625Srvb 166538625Srvb/* 166638625Srvb * Convert from file system blocks to device blocks 166738625Srvb */ 166838625Srvbint 166939085Srvbcoda_bmap(v) 167038625Srvb void *v; 167138625Srvb{ 167238625Srvb /* XXX on the global proc */ 167338625Srvb/* true args */ 167438625Srvb struct vop_bmap_args *ap = v; 167538625Srvb struct vnode *vp __attribute__((unused)) = ap->a_vp; /* file's vnode */ 167638625Srvb daddr_t bn __attribute__((unused)) = ap->a_bn; /* fs block number */ 167738625Srvb struct vnode **vpp = ap->a_vpp; /* RETURN vp of device */ 167838625Srvb daddr_t *bnp __attribute__((unused)) = ap->a_bnp; /* RETURN device block number */ 167938625Srvb struct proc *p __attribute__((unused)) = curproc; 168038625Srvb/* upcall decl */ 168138625Srvb/* locals */ 168238625Srvb 168338625Srvb int ret = 0; 168438625Srvb struct cnode *cp; 168538625Srvb 168638625Srvb cp = VTOC(vp); 168738625Srvb if (cp->c_ovp) { 168839728Srvb return EINVAL; 168938625Srvb ret = VOP_BMAP(cp->c_ovp, bn, vpp, bnp, ap->a_runp, ap->a_runb); 169039650Srvb#if 0 169138625Srvb printf("VOP_BMAP(cp->c_ovp %p, bn %p, vpp %p, bnp %p, ap->a_runp %p, ap->a_runb %p) = %d\n", 169238625Srvb cp->c_ovp, bn, vpp, bnp, ap->a_runp, ap->a_runb, ret); 169339650Srvb#endif 169438625Srvb return ret; 169538625Srvb } else { 169641504Srvb#if 0 169739085Srvb printf("coda_bmap: no container\n"); 169841504Srvb#endif 169938625Srvb return(EOPNOTSUPP); 170038625Srvb } 170138625Srvb} 170238625Srvb 170338625Srvb/* 170438625Srvb * I don't think the following two things are used anywhere, so I've 170538625Srvb * commented them out 170638625Srvb * 170738625Srvb * struct buf *async_bufhead; 170838625Srvb * int async_daemon_count; 170938625Srvb */ 171038625Srvbint 171139085Srvbcoda_strategy(v) 171238625Srvb void *v; 171338625Srvb{ 171438625Srvb/* true args */ 171538625Srvb struct vop_strategy_args *ap = v; 171638625Srvb register struct buf *bp __attribute__((unused)) = ap->a_bp; 171738625Srvb struct proc *p __attribute__((unused)) = curproc; 171838625Srvb/* upcall decl */ 171938625Srvb/* locals */ 172038625Srvb 172139085Srvb printf("coda_strategy: called ???\n"); 172238625Srvb return(EOPNOTSUPP); 172338625Srvb} 172438625Srvb 172538625Srvbint 172639085Srvbcoda_reclaim(v) 172738625Srvb void *v; 172838625Srvb{ 172938625Srvb/* true args */ 173038625Srvb struct vop_reclaim_args *ap = v; 173138625Srvb struct vnode *vp = ap->a_vp; 173238625Srvb struct cnode *cp = VTOC(vp); 173338625Srvb/* upcall decl */ 173438625Srvb/* locals */ 173538625Srvb 173638625Srvb/* 173738625Srvb * Forced unmount/flush will let vnodes with non zero use be destroyed! 173838625Srvb */ 173938625Srvb ENTRY; 174038625Srvb 174138625Srvb if (IS_UNMOUNTING(cp)) { 174238625Srvb#ifdef DEBUG 174338625Srvb if (VTOC(vp)->c_ovp) { 174438625Srvb if (IS_UNMOUNTING(cp)) 174539085Srvb printf("coda_reclaim: c_ovp not void: vp %p, cp %p\n", vp, cp); 174638625Srvb } 174738625Srvb#endif 174838625Srvb } else { 174939650Srvb#ifdef OLD_DIAGNOSTIC 175038625Srvb if (vp->v_usecount != 0) 175139650Srvb print("coda_reclaim: pushing active %p\n", vp); 175238625Srvb if (VTOC(vp)->c_ovp) { 175339085Srvb panic("coda_reclaim: c_ovp not void"); 175438625Srvb } 175539650Srvb#endif 175638625Srvb } 175738625Srvb cache_purge(vp); 175839085Srvb coda_free(VTOC(vp)); 175938625Srvb VTOC(vp) = NULL; 176038625Srvb return (0); 176138625Srvb} 176238625Srvb 176338625Srvbint 176439085Srvbcoda_lock(v) 176538625Srvb void *v; 176638625Srvb{ 176738625Srvb/* true args */ 176838625Srvb struct vop_lock_args *ap = v; 176938625Srvb struct vnode *vp = ap->a_vp; 177038625Srvb struct cnode *cp = VTOC(vp); 177138625Srvb struct proc *p = ap->a_p; 177238625Srvb/* upcall decl */ 177338625Srvb/* locals */ 177438625Srvb 177538625Srvb ENTRY; 177638625Srvb 177739085Srvb if (coda_lockdebug) { 177838625Srvb myprintf(("Attempting lock on %lx.%lx.%lx\n", 177938625Srvb cp->c_fid.Volume, cp->c_fid.Vnode, cp->c_fid.Unique)); 178038625Srvb } 178138625Srvb 178242900Seivind#ifndef DEBUG_LOCKS 178338759Srvb return (lockmgr(&cp->c_lock, ap->a_flags, &vp->v_interlock, p)); 178442900Seivind#else 178542900Seivind return (debuglockmgr(&cp->c_lock, ap->a_flags, &vp->v_interlock, p, 178642900Seivind "coda_lock", vp->filename, vp->line)); 178742900Seivind#endif 178838625Srvb} 178938625Srvb 179038625Srvbint 179139085Srvbcoda_unlock(v) 179238625Srvb void *v; 179338625Srvb{ 179438625Srvb/* true args */ 179538625Srvb struct vop_unlock_args *ap = v; 179638625Srvb struct vnode *vp = ap->a_vp; 179738625Srvb struct cnode *cp = VTOC(vp); 179838625Srvb struct proc *p = ap->a_p; 179938625Srvb/* upcall decl */ 180038625Srvb/* locals */ 180138625Srvb 180238625Srvb ENTRY; 180339085Srvb if (coda_lockdebug) { 180438625Srvb myprintf(("Attempting unlock on %lx.%lx.%lx\n", 180538625Srvb cp->c_fid.Volume, cp->c_fid.Vnode, cp->c_fid.Unique)); 180638625Srvb } 180738625Srvb 180838759Srvb return (lockmgr(&cp->c_lock, ap->a_flags | LK_RELEASE, &vp->v_interlock, p)); 180938625Srvb} 181038625Srvb 181138625Srvbint 181239085Srvbcoda_islocked(v) 181338625Srvb void *v; 181438625Srvb{ 181538625Srvb/* true args */ 181638625Srvb struct vop_islocked_args *ap = v; 181738625Srvb struct cnode *cp = VTOC(ap->a_vp); 181838625Srvb ENTRY; 181938625Srvb 182054444Seivind return (lockstatus(&cp->c_lock, ap->a_p)); 182138625Srvb} 182238625Srvb 182338625Srvb/* How one looks up a vnode given a device/inode pair: */ 182438625Srvbint 182539085Srvbcoda_grab_vnode(dev_t dev, ino_t ino, struct vnode **vpp) 182638625Srvb{ 182738625Srvb /* This is like VFS_VGET() or igetinode()! */ 182838625Srvb int error; 182938625Srvb struct mount *mp; 183038625Srvb 183138625Srvb if (!(mp = devtomp(dev))) { 183249524Sbde myprintf(("coda_grab_vnode: devtomp(%#lx) returns NULL\n", 183349524Sbde (u_long)dev2udev(dev))); 183438625Srvb return(ENXIO); 183538625Srvb } 183638625Srvb 183738625Srvb /* XXX - ensure that nonzero-return means failure */ 183838625Srvb error = VFS_VGET(mp,ino,vpp); 183938625Srvb if (error) { 184049524Sbde myprintf(("coda_grab_vnode: iget/vget(%lx, %lu) returns %p, err %d\n", 184149524Sbde (u_long)dev2udev(dev), (u_long)ino, (void *)*vpp, error)); 184238625Srvb return(ENOENT); 184338625Srvb } 184438625Srvb return(0); 184538625Srvb} 184638625Srvb 184738625Srvbvoid 184838625Srvbprint_vattr( attr ) 184938625Srvb struct vattr *attr; 185038625Srvb{ 185138625Srvb char *typestr; 185238625Srvb 185338625Srvb switch (attr->va_type) { 185438625Srvb case VNON: 185538625Srvb typestr = "VNON"; 185638625Srvb break; 185738625Srvb case VREG: 185838625Srvb typestr = "VREG"; 185938625Srvb break; 186038625Srvb case VDIR: 186138625Srvb typestr = "VDIR"; 186238625Srvb break; 186338625Srvb case VBLK: 186438625Srvb typestr = "VBLK"; 186538625Srvb break; 186638625Srvb case VCHR: 186738625Srvb typestr = "VCHR"; 186838625Srvb break; 186938625Srvb case VLNK: 187038625Srvb typestr = "VLNK"; 187138625Srvb break; 187238625Srvb case VSOCK: 187338625Srvb typestr = "VSCK"; 187438625Srvb break; 187538625Srvb case VFIFO: 187638625Srvb typestr = "VFFO"; 187738625Srvb break; 187838625Srvb case VBAD: 187938625Srvb typestr = "VBAD"; 188038625Srvb break; 188138625Srvb default: 188238625Srvb typestr = "????"; 188338625Srvb break; 188438625Srvb } 188538625Srvb 188638625Srvb 188738625Srvb myprintf(("attr: type %s mode %d uid %d gid %d fsid %d rdev %d\n", 188838625Srvb typestr, (int)attr->va_mode, (int)attr->va_uid, 188938625Srvb (int)attr->va_gid, (int)attr->va_fsid, (int)attr->va_rdev)); 189038625Srvb 189138625Srvb myprintf((" fileid %d nlink %d size %d blocksize %d bytes %d\n", 189238625Srvb (int)attr->va_fileid, (int)attr->va_nlink, 189338625Srvb (int)attr->va_size, 189438625Srvb (int)attr->va_blocksize,(int)attr->va_bytes)); 189538625Srvb myprintf((" gen %ld flags %ld vaflags %d\n", 189638625Srvb attr->va_gen, attr->va_flags, attr->va_vaflags)); 189738625Srvb myprintf((" atime sec %d nsec %d\n", 189838625Srvb (int)attr->va_atime.tv_sec, (int)attr->va_atime.tv_nsec)); 189938625Srvb myprintf((" mtime sec %d nsec %d\n", 190038625Srvb (int)attr->va_mtime.tv_sec, (int)attr->va_mtime.tv_nsec)); 190138625Srvb myprintf((" ctime sec %d nsec %d\n", 190238625Srvb (int)attr->va_ctime.tv_sec, (int)attr->va_ctime.tv_nsec)); 190338625Srvb} 190438625Srvb 190538625Srvb/* How to print a ucred */ 190638625Srvbvoid 190738625Srvbprint_cred(cred) 190838625Srvb struct ucred *cred; 190938625Srvb{ 191038625Srvb 191138625Srvb int i; 191238625Srvb 191338625Srvb myprintf(("ref %d\tuid %d\n",cred->cr_ref,cred->cr_uid)); 191438625Srvb 191538625Srvb for (i=0; i < cred->cr_ngroups; i++) 191638625Srvb myprintf(("\tgroup %d: (%d)\n",i,cred->cr_groups[i])); 191738625Srvb myprintf(("\n")); 191838625Srvb 191938625Srvb} 192038625Srvb 192138625Srvb/* 192238625Srvb * Return a vnode for the given fid. 192338625Srvb * If no cnode exists for this fid create one and put it 192438625Srvb * in a table hashed by fid.Volume and fid.Vnode. If the cnode for 192538625Srvb * this fid is already in the table return it (ref count is 192639085Srvb * incremented by coda_find. The cnode will be flushed from the 192739085Srvb * table when coda_inactive calls coda_unsave. 192838625Srvb */ 192938625Srvbstruct cnode * 193039085Srvbmake_coda_node(fid, vfsp, type) 193138625Srvb ViceFid *fid; struct mount *vfsp; short type; 193238625Srvb{ 193338625Srvb struct cnode *cp; 193438625Srvb int err; 193538625Srvb 193639085Srvb if ((cp = coda_find(fid)) == NULL) { 193738625Srvb struct vnode *vp; 193838625Srvb 193939085Srvb cp = coda_alloc(); 194038625Srvb lockinit(&cp->c_lock, PINOD, "cnode", 0, 0); 194138625Srvb cp->c_fid = *fid; 194238625Srvb 194339085Srvb err = getnewvnode(VT_CODA, vfsp, coda_vnodeop_p, &vp); 194438625Srvb if (err) { 194539085Srvb panic("coda: getnewvnode returned error %d\n", err); 194638625Srvb } 194738625Srvb vp->v_data = cp; 194838625Srvb vp->v_type = type; 194938625Srvb cp->c_vnode = vp; 195039085Srvb coda_save(cp); 195138625Srvb 195238625Srvb } else { 195338625Srvb vref(CTOV(cp)); 195438625Srvb } 195538625Srvb 195638625Srvb return cp; 195738625Srvb} 1958