coda_vnops.c revision 38759
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 * 2938759Srvb * @(#) src/sys/cfs/cfs_vnodeops.c,v 1.1.1.1 1998/08/29 21:14:52 rvb Exp $ 3038759Srvb * $Id: $ 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/* 4938625Srvb * HISTORY 5038625Srvb * $Log: cfs_vnodeops.c,v $ 5138759Srvb * Revision 1.1.1.1 1998/08/29 21:14:52 rvb 5238759Srvb * Very Preliminary Coda 5338759Srvb * 5438625Srvb * Revision 1.12 1998/08/28 18:28:00 rvb 5538625Srvb * NetBSD -current is stricter! 5638625Srvb * 5738625Srvb * Revision 1.11 1998/08/28 18:12:23 rvb 5838625Srvb * Now it also works on FreeBSD -current. This code will be 5938625Srvb * committed to the FreeBSD -current and NetBSD -current 6038625Srvb * trees. It will then be tailored to the particular platform 6138625Srvb * by flushing conditional code. 6238625Srvb * 6338625Srvb * Revision 1.10 1998/08/18 17:05:21 rvb 6438625Srvb * Don't use __RCSID now 6538625Srvb * 6638625Srvb * Revision 1.9 1998/08/18 16:31:46 rvb 6738625Srvb * Sync the code for NetBSD -current; test on 1.3 later 6838625Srvb * 6938625Srvb * Revision 1.8 98/02/24 22:22:50 rvb 7038625Srvb * Fixes up mainly to flush iopen and friends 7138625Srvb * 7238625Srvb * Revision 1.7 98/01/31 20:53:15 rvb 7338625Srvb * First version that works on FreeBSD 2.2.5 7438625Srvb * 7538625Srvb * Revision 1.6 98/01/23 11:53:47 rvb 7638625Srvb * Bring RVB_CFS1_1 to HEAD 7738625Srvb * 7838625Srvb * Revision 1.5.2.8 98/01/23 11:21:11 rvb 7938625Srvb * Sync with 2.2.5 8038625Srvb * 8138625Srvb * Revision 1.5.2.7 97/12/19 14:26:08 rvb 8238625Srvb * session id 8338625Srvb * 8438625Srvb * Revision 1.5.2.6 97/12/16 22:01:34 rvb 8538625Srvb * Oops add cfs_subr.h cfs_venus.h; sync with peter 8638625Srvb * 8738625Srvb * Revision 1.5.2.5 97/12/16 12:40:14 rvb 8838625Srvb * Sync with 1.3 8938625Srvb * 9038625Srvb * Revision 1.5.2.4 97/12/10 14:08:31 rvb 9138625Srvb * Fix O_ flags; check result in cfscall 9238625Srvb * 9338625Srvb * Revision 1.5.2.3 97/12/10 11:40:27 rvb 9438625Srvb * No more ody 9538625Srvb * 9638625Srvb * Revision 1.5.2.2 97/12/09 16:07:15 rvb 9738625Srvb * Sync with vfs/include/coda.h 9838625Srvb * 9938625Srvb * Revision 1.5.2.1 97/12/06 17:41:25 rvb 10038625Srvb * Sync with peters coda.h 10138625Srvb * 10238625Srvb * Revision 1.5 97/12/05 10:39:23 rvb 10338625Srvb * Read CHANGES 10438625Srvb * 10538625Srvb * Revision 1.4.14.10 97/11/25 08:08:48 rvb 10638625Srvb * cfs_venus ... done; until cred/vattr change 10738625Srvb * 10838625Srvb * Revision 1.4.14.9 97/11/24 15:44:48 rvb 10938625Srvb * Final cfs_venus.c w/o macros, but one locking bug 11038625Srvb * 11138625Srvb * Revision 1.4.14.8 97/11/21 11:28:04 rvb 11238625Srvb * cfs_venus.c is done: first pass 11338625Srvb * 11438625Srvb * Revision 1.4.14.7 97/11/20 11:46:51 rvb 11538625Srvb * Capture current cfs_venus 11638625Srvb * 11738625Srvb * Revision 1.4.14.6 97/11/18 10:27:19 rvb 11838625Srvb * cfs_nbsd.c is DEAD!!!; integrated into cfs_vf/vnops.c 11938625Srvb * cfs_nb_foo and cfs_foo are joined 12038625Srvb * 12138625Srvb * Revision 1.4.14.5 97/11/13 22:03:03 rvb 12238625Srvb * pass2 cfs_NetBSD.h mt 12338625Srvb * 12438625Srvb * Revision 1.4.14.4 97/11/12 12:09:42 rvb 12538625Srvb * reorg pass1 12638625Srvb * 12738625Srvb * Revision 1.4.14.3 97/11/06 21:03:28 rvb 12838625Srvb * don't include headers in headers 12938625Srvb * 13038625Srvb * Revision 1.4.14.2 97/10/29 16:06:30 rvb 13138625Srvb * Kill DYING 13238625Srvb * 13338625Srvb * Revision 1.4.14.1 1997/10/28 23:10:18 rvb 13438625Srvb * >64Meg; venus can be killed! 13538625Srvb * 13638625Srvb * Revision 1.4 1997/02/20 13:54:50 lily 13738625Srvb * check for NULL return from cfsnc_lookup before CTOV 13838625Srvb * 13938625Srvb * Revision 1.3 1996/12/12 22:11:02 bnoble 14038625Srvb * Fixed the "downcall invokes venus operation" deadlock in all known cases. 14138625Srvb * There may be more 14238625Srvb * 14338625Srvb * Revision 1.2 1996/01/02 16:57:07 bnoble 14438625Srvb * Added support for Coda MiniCache and raw inode calls (final commit) 14538625Srvb * 14638625Srvb * Revision 1.1.2.1 1995/12/20 01:57:34 bnoble 14738625Srvb * Added CFS-specific files 14838625Srvb * 14938625Srvb * Revision 3.1.1.1 1995/03/04 19:08:06 bnoble 15038625Srvb * Branch for NetBSD port revisions 15138625Srvb * 15238625Srvb * Revision 3.1 1995/03/04 19:08:04 bnoble 15338625Srvb * Bump to major revision 3 to prepare for NetBSD port 15438625Srvb * 15538625Srvb * Revision 2.6 1995/02/17 16:25:26 dcs 15638625Srvb * These versions represent several changes: 15738625Srvb * 1. Allow venus to restart even if outstanding references exist. 15838625Srvb * 2. Have only one ctlvp per client, as opposed to one per mounted cfs device.d 15938625Srvb * 3. Allow ody_expand to return many members, not just one. 16038625Srvb * 16138625Srvb * Revision 2.5 94/11/09 20:29:27 dcs 16238625Srvb * Small bug in remove dealing with hard links and link counts was fixed. 16338625Srvb * 16438625Srvb * Revision 2.4 94/10/14 09:58:42 dcs 16538625Srvb * Made changes 'cause sun4s have braindead compilers 16638625Srvb * 16738625Srvb * Revision 2.3 94/10/12 16:46:37 dcs 16838625Srvb * Cleaned kernel/venus interface by removing XDR junk, plus 16938625Srvb * so cleanup to allow this code to be more easily ported. 17038625Srvb * 17138625Srvb * Revision 2.2 94/09/20 14:12:41 dcs 17238625Srvb * Fixed bug in rename when moving a directory. 17338625Srvb * 17438625Srvb * Revision 2.1 94/07/21 16:25:22 satya 17538625Srvb * Conversion to C++ 3.0; start of Coda Release 2.0 17638625Srvb * 17738625Srvb * Revision 1.4 93/12/17 01:38:01 luqi 17838625Srvb * Changes made for kernel to pass process info to Venus: 17938625Srvb * 18038625Srvb * (1) in file cfs.h 18138625Srvb * add process id and process group id in most of the cfs argument types. 18238625Srvb * 18338625Srvb * (2) in file cfs_vnodeops.c 18438625Srvb * add process info passing in most of the cfs vnode operations. 18538625Srvb * 18638625Srvb * (3) in file cfs_xdr.c 18738625Srvb * expand xdr routines according changes in (1). 18838625Srvb * add variable pass_process_info to allow venus for kernel version checking. 18938625Srvb * 19038625Srvb * Revision 1.3 93/05/28 16:24:33 bnoble 19138625Srvb * *** empty log message *** 19238625Srvb * 19338625Srvb * Revision 1.2 92/10/27 17:58:25 lily 19438625Srvb * merge kernel/latest and alpha/src/cfs 19538625Srvb * 19638625Srvb * Revision 2.4 92/09/30 14:16:37 mja 19738625Srvb * Redid buffer allocation so that it does kmem_{alloc,free} for all 19838625Srvb * architectures. Zone allocation, previously used on the 386, caused 19938625Srvb * panics if it was invoked repeatedly. Stack allocation, previously 20038625Srvb * used on all other architectures, tickled some Mach bug that appeared 20138625Srvb * with large stack frames. 20238625Srvb * [91/02/09 jjk] 20338625Srvb * 20438625Srvb * Added contributors blurb. 20538625Srvb * [90/12/13 jjk] 20638625Srvb * 20738625Srvb * Revision 2.3 90/07/26 15:50:09 mrt 20838625Srvb * Fixed fix to rename to remove .. from moved directories. 20938625Srvb * [90/06/28 dcs] 21038625Srvb * 21138625Srvb * Revision 1.7 90/06/28 16:24:25 dcs 21238625Srvb * Fixed bug with moving directories, we weren't flushing .. for the moved directory. 21338625Srvb * 21438625Srvb * Revision 1.6 90/05/31 17:01:47 dcs 21538625Srvb * Prepare for merge with facilities kernel. 21638625Srvb * 21738625Srvb * 21838625Srvb */ 21938625Srvb 22038625Srvb#include <sys/param.h> 22138625Srvb#include <sys/systm.h> 22238759Srvb#include <sys/kernel.h> 22338759Srvb#include <sys/proc.h> 22438625Srvb#include <sys/malloc.h> 22538759Srvb#include <sys/mount.h> 22638625Srvb#include <sys/errno.h> 22738625Srvb#include <sys/acct.h> 22838625Srvb#include <sys/file.h> 22938759Srvb#include <sys/fcntl.h> 23038625Srvb#include <sys/uio.h> 23138625Srvb#include <sys/namei.h> 23238625Srvb#include <sys/ioccom.h> 23338625Srvb#include <sys/select.h> 23438759Srvb 23538625Srvb#include <vm/vm.h> 23638625Srvb#include <vm/vm_object.h> 23738625Srvb#include <vm/vm_extern.h> 23838759Srvb#include <vm/vm_zone.h> 23938625Srvb 24038625Srvb#include <cfs/coda.h> 24138625Srvb#include <cfs/cnode.h> 24238625Srvb#include <cfs/cfs_vnodeops.h> 24338625Srvb#include <cfs/cfs_venus.h> 24438625Srvb#include <cfs/coda_opstats.h> 24538625Srvb#include <cfs/cfs_subr.h> 24638625Srvb#include <cfs/cfsnc.h> 24738625Srvb#include <cfs/pioctl.h> 24838625Srvb 24938625Srvb/* 25038625Srvb * These flags select various performance enhancements. 25138625Srvb */ 25238625Srvbint cfs_attr_cache = 1; /* Set to cache attributes in the kernel */ 25338625Srvbint cfs_symlink_cache = 1; /* Set to cache symbolic link information */ 25438625Srvbint cfs_access_cache = 1; /* Set to handle some access checks directly */ 25538625Srvb 25638625Srvb/* structure to keep track of vfs calls */ 25738625Srvb 25838625Srvbstruct cfs_op_stats cfs_vnodeopstats[CFS_VNODEOPS_SIZE]; 25938625Srvb 26038625Srvb#define MARK_ENTRY(op) (cfs_vnodeopstats[op].entries++) 26138625Srvb#define MARK_INT_SAT(op) (cfs_vnodeopstats[op].sat_intrn++) 26238625Srvb#define MARK_INT_FAIL(op) (cfs_vnodeopstats[op].unsat_intrn++) 26338625Srvb#define MARK_INT_GEN(op) (cfs_vnodeopstats[op].gen_intrn++) 26438625Srvb 26538625Srvb/* What we are delaying for in printf */ 26638625Srvbint cfs_printf_delay = 0; /* in microseconds */ 26738625Srvbint cfs_vnop_print_entry = 0; 26838625Srvbstatic int cfs_lockdebug = 0; 26938625Srvb 27038625Srvb/* Definition of the vfs operation vector */ 27138625Srvb 27238625Srvb/* 27338625Srvb * Some NetBSD details: 27438625Srvb * 27538625Srvb * cfs_start is called at the end of the mount syscall. 27638625Srvb * cfs_init is called at boot time. 27738625Srvb */ 27838625Srvb 27938759Srvb#define ENTRY if(cfs_vnop_print_entry) myprintf(("Entered %s\n",__FUNCTION__)) 28038625Srvb 28138625Srvb/* Definition of the vnode operation vector */ 28238625Srvb 28338625Srvbstruct vnodeopv_entry_desc cfs_vnodeop_entries[] = { 28438759Srvb { &vop_default_desc, cfs_vop_error }, 28538625Srvb { &vop_lookup_desc, cfs_lookup }, /* lookup */ 28638625Srvb { &vop_create_desc, cfs_create }, /* create */ 28738759Srvb { &vop_mknod_desc, cfs_vop_error }, /* mknod */ 28838625Srvb { &vop_open_desc, cfs_open }, /* open */ 28938625Srvb { &vop_close_desc, cfs_close }, /* close */ 29038625Srvb { &vop_access_desc, cfs_access }, /* access */ 29138625Srvb { &vop_getattr_desc, cfs_getattr }, /* getattr */ 29238625Srvb { &vop_setattr_desc, cfs_setattr }, /* setattr */ 29338625Srvb { &vop_read_desc, cfs_read }, /* read */ 29438625Srvb { &vop_write_desc, cfs_write }, /* write */ 29538625Srvb { &vop_ioctl_desc, cfs_ioctl }, /* ioctl */ 29638759Srvb { &vop_mmap_desc, cfs_vop_error }, /* mmap */ 29738625Srvb { &vop_fsync_desc, cfs_fsync }, /* fsync */ 29838625Srvb { &vop_remove_desc, cfs_remove }, /* remove */ 29938625Srvb { &vop_link_desc, cfs_link }, /* link */ 30038625Srvb { &vop_rename_desc, cfs_rename }, /* rename */ 30138625Srvb { &vop_mkdir_desc, cfs_mkdir }, /* mkdir */ 30238625Srvb { &vop_rmdir_desc, cfs_rmdir }, /* rmdir */ 30338625Srvb { &vop_symlink_desc, cfs_symlink }, /* symlink */ 30438625Srvb { &vop_readdir_desc, cfs_readdir }, /* readdir */ 30538625Srvb { &vop_readlink_desc, cfs_readlink }, /* readlink */ 30638625Srvb { &vop_abortop_desc, cfs_abortop }, /* abortop */ 30738625Srvb { &vop_inactive_desc, cfs_inactive }, /* inactive */ 30838625Srvb { &vop_reclaim_desc, cfs_reclaim }, /* reclaim */ 30938625Srvb { &vop_lock_desc, cfs_lock }, /* lock */ 31038625Srvb { &vop_unlock_desc, cfs_unlock }, /* unlock */ 31138625Srvb { &vop_bmap_desc, cfs_bmap }, /* bmap */ 31238625Srvb { &vop_strategy_desc, cfs_strategy }, /* strategy */ 31338759Srvb { &vop_print_desc, cfs_vop_error }, /* print */ 31438625Srvb { &vop_islocked_desc, cfs_islocked }, /* islocked */ 31538759Srvb { &vop_pathconf_desc, cfs_vop_error }, /* pathconf */ 31638759Srvb { &vop_advlock_desc, cfs_vop_nop }, /* advlock */ 31738759Srvb { &vop_bwrite_desc, cfs_vop_error }, /* bwrite */ 31838759Srvb { &vop_lease_desc, cfs_vop_nop }, /* lease */ 31938759Srvb { &vop_poll_desc, (vop_t *) vop_stdpoll }, 32038759Srvb { &vop_getpages_desc, cfs_fbsd_getpages }, /* pager intf.*/ 32138759Srvb { &vop_putpages_desc, cfs_fbsd_putpages }, /* pager intf.*/ 32238625Srvb 32338759Srvb#if 0 32438625Srvb 32538759Srvb we need to define these someday 32638625Srvb#define UFS_BLKATOFF(aa, bb, cc, dd) VFSTOUFS((aa)->v_mount)->um_blkatoff(aa, bb, cc, dd) 32738625Srvb#define UFS_VALLOC(aa, bb, cc, dd) VFSTOUFS((aa)->v_mount)->um_valloc(aa, bb, cc, dd) 32838625Srvb#define UFS_VFREE(aa, bb, cc) VFSTOUFS((aa)->v_mount)->um_vfree(aa, bb, cc) 32938625Srvb#define UFS_TRUNCATE(aa, bb, cc, dd, ee) VFSTOUFS((aa)->v_mount)->um_truncate(aa, bb, cc, dd, ee) 33038625Srvb#define UFS_UPDATE(aa, bb, cc, dd) VFSTOUFS((aa)->v_mount)->um_update(aa, bb, cc, dd) 33138625Srvb 33238625Srvb missing 33338625Srvb { &vop_reallocblks_desc, (vop_t *) ufs_missingop }, 33438625Srvb { &vop_cachedlookup_desc, (vop_t *) ufs_lookup }, 33538625Srvb { &vop_whiteout_desc, (vop_t *) ufs_whiteout }, 33638625Srvb#endif 33738625Srvb { (struct vnodeop_desc*)NULL, (int(*)(void *))NULL } 33838625Srvb}; 33938625Srvb 34038625Srvbstatic struct vnodeopv_desc cfs_vnodeop_opv_desc = 34138625Srvb { &cfs_vnodeop_p, cfs_vnodeop_entries }; 34238625Srvb 34338625SrvbVNODEOP_SET(cfs_vnodeop_opv_desc); 34438625Srvb 34538625Srvb/* A generic panic: we were called with something we didn't define yet */ 34638625Srvbint 34738759Srvbcfs_vop_error(void *anon) { 34838625Srvb struct vnodeop_desc **desc = (struct vnodeop_desc **)anon; 34938625Srvb 35038625Srvb myprintf(("Vnode operation %s called, but not defined\n", 35138625Srvb (*desc)->vdesc_name)); 35238759Srvb panic("cfs_vop_error"); 35338625Srvb return 0; 35438625Srvb} 35538625Srvb 35638625Srvb/* A generic do-nothing. For lease_check, advlock */ 35738625Srvbint 35838759Srvbcfs_vop_nop(void *anon) { 35938625Srvb struct vnodeop_desc **desc = (struct vnodeop_desc **)anon; 36038625Srvb 36138625Srvb if (cfsdebug) { 36238625Srvb myprintf(("Vnode operation %s called, but unsupported\n", 36338625Srvb (*desc)->vdesc_name)); 36438625Srvb } 36538625Srvb return (0); 36638625Srvb} 36738625Srvb 36838625Srvbint 36938625Srvbcfs_vnodeopstats_init(void) 37038625Srvb{ 37138625Srvb register int i; 37238625Srvb 37338625Srvb for(i=0;i<CFS_VNODEOPS_SIZE;i++) { 37438625Srvb cfs_vnodeopstats[i].opcode = i; 37538625Srvb cfs_vnodeopstats[i].entries = 0; 37638625Srvb cfs_vnodeopstats[i].sat_intrn = 0; 37738625Srvb cfs_vnodeopstats[i].unsat_intrn = 0; 37838625Srvb cfs_vnodeopstats[i].gen_intrn = 0; 37938625Srvb } 38038625Srvb return 0; 38138625Srvb} 38238625Srvb 38338625Srvb/* 38438625Srvb * cfs_open calls Venus to return the device, inode pair of the cache 38538625Srvb * file holding the data. Using iget, cfs_open finds the vnode of the 38638625Srvb * cache file, and then opens it. 38738625Srvb */ 38838625Srvbint 38938625Srvbcfs_open(v) 39038625Srvb void *v; 39138625Srvb{ 39238625Srvb /* 39338625Srvb * NetBSD can pass the O_EXCL flag in mode, even though the check 39438625Srvb * has already happened. Venus defensively assumes that if open 39538625Srvb * is passed the EXCL, it must be a bug. We strip the flag here. 39638625Srvb */ 39738625Srvb/* true args */ 39838625Srvb struct vop_open_args *ap = v; 39938625Srvb register struct vnode **vpp = &(ap->a_vp); 40038625Srvb struct cnode *cp = VTOC(*vpp); 40138625Srvb int flag = ap->a_mode & (~O_EXCL); 40238625Srvb struct ucred *cred = ap->a_cred; 40338625Srvb struct proc *p = ap->a_p; 40438625Srvb/* locals */ 40538625Srvb int error; 40638625Srvb struct vnode *vp; 40738625Srvb dev_t dev; 40838625Srvb ino_t inode; 40938625Srvb 41038625Srvb MARK_ENTRY(CFS_OPEN_STATS); 41138625Srvb 41238625Srvb /* Check for open of control file. */ 41338625Srvb if (IS_CTL_VP(*vpp)) { 41438625Srvb /* XXX */ 41538625Srvb /* if (WRITEABLE(flag)) */ 41638625Srvb if (flag & (FWRITE | O_TRUNC | O_CREAT | O_EXCL)) { 41738625Srvb MARK_INT_FAIL(CFS_OPEN_STATS); 41838625Srvb return(EACCES); 41938625Srvb } 42038625Srvb MARK_INT_SAT(CFS_OPEN_STATS); 42138625Srvb return(0); 42238625Srvb } 42338625Srvb 42438625Srvb error = venus_open(vtomi((*vpp)), &cp->c_fid, flag, cred, p, &dev, &inode); 42538625Srvb if (error) 42638625Srvb return (error); 42738625Srvb if (!error) { 42838625Srvb CFSDEBUG( CFS_OPEN,myprintf(("open: dev %d inode %d result %d\n", 42938625Srvb dev, inode, error)); ) 43038625Srvb } 43138625Srvb 43238625Srvb /* Translate the <device, inode> pair for the cache file into 43338625Srvb an inode pointer. */ 43438625Srvb error = cfs_grab_vnode(dev, inode, &vp); 43538625Srvb if (error) 43638625Srvb return (error); 43738625Srvb 43838759Srvb /* We get the vnode back locked. Needs unlocked */ 43938759Srvb VOP_UNLOCK(vp, 0, p); 44038625Srvb /* Keep a reference until the close comes in. */ 44138625Srvb vref(*vpp); 44238625Srvb 44338625Srvb /* Save the vnode pointer for the cache file. */ 44438625Srvb if (cp->c_ovp == NULL) { 44538625Srvb cp->c_ovp = vp; 44638625Srvb } else { 44738625Srvb if (cp->c_ovp != vp) 44838625Srvb panic("cfs_open: cp->c_ovp != ITOV(ip)"); 44938625Srvb } 45038625Srvb cp->c_ocount++; 45138625Srvb 45238625Srvb /* Flush the attribute cached if writing the file. */ 45338625Srvb if (flag & FWRITE) { 45438625Srvb cp->c_owrite++; 45538625Srvb cp->c_flags &= ~C_VATTR; 45638625Srvb } 45738625Srvb 45838625Srvb /* Save the <device, inode> pair for the cache file to speed 45938625Srvb up subsequent page_read's. */ 46038625Srvb cp->c_device = dev; 46138625Srvb cp->c_inode = inode; 46238625Srvb 46338625Srvb /* Open the cache file. */ 46438625Srvb error = VOP_OPEN(vp, flag, cred, p); 46538625Srvb if (error) { 46638625Srvb printf("cfs_open: VOP_OPEN on container failed %d\n", error); 46738625Srvb return (error); 46838625Srvb } 46938625Srvb if (vp->v_type == VREG) { 47038625Srvb error = vfs_object_create(vp, p, cred, 1); 47138625Srvb if (error != 0) { 47238625Srvb printf("cfs_open: vfs_object_create() returns %d\n", error); 47338625Srvb vput(vp); 47438625Srvb } 47538625Srvb } 47638625Srvb return(error); 47738625Srvb} 47838625Srvb 47938625Srvb/* 48038625Srvb * Close the cache file used for I/O and notify Venus. 48138625Srvb */ 48238625Srvbint 48338625Srvbcfs_close(v) 48438625Srvb void *v; 48538625Srvb{ 48638625Srvb/* true args */ 48738625Srvb struct vop_close_args *ap = v; 48838625Srvb struct vnode *vp = ap->a_vp; 48938625Srvb struct cnode *cp = VTOC(vp); 49038625Srvb int flag = ap->a_fflag; 49138625Srvb struct ucred *cred = ap->a_cred; 49238625Srvb struct proc *p = ap->a_p; 49338625Srvb/* locals */ 49438625Srvb int error; 49538625Srvb 49638625Srvb MARK_ENTRY(CFS_CLOSE_STATS); 49738625Srvb 49838625Srvb /* Check for close of control file. */ 49938625Srvb if (IS_CTL_VP(vp)) { 50038625Srvb MARK_INT_SAT(CFS_CLOSE_STATS); 50138625Srvb return(0); 50238625Srvb } 50338625Srvb 50438625Srvb if (IS_UNMOUNTING(cp)) { 50538625Srvb if (cp->c_ovp) { 50638625Srvb printf("cfs_close: destroying container ref %d, ufs vp %p of vp %p/cp %p\n", 50738625Srvb vp->v_usecount, cp->c_ovp, vp, cp); 50838625Srvb vgone(cp->c_ovp); 50938625Srvb } else { 51038625Srvb printf("cfs_close: NO container vp %p/cp %p\n", vp, cp); 51138625Srvb } 51238625Srvb return ENODEV; 51338625Srvb } else { 51438625Srvb VOP_CLOSE(cp->c_ovp, flag, cred, p); /* Do errors matter here? */ 51538625Srvb vrele(cp->c_ovp); 51638625Srvb } 51738625Srvb 51838625Srvb if (--cp->c_ocount == 0) 51938625Srvb cp->c_ovp = NULL; 52038625Srvb 52138625Srvb if (flag & FWRITE) /* file was opened for write */ 52238625Srvb --cp->c_owrite; 52338625Srvb 52438625Srvb error = venus_close(vtomi(vp), &cp->c_fid, flag, cred, p); 52538625Srvb vrele(CTOV(cp)); 52638625Srvb 52738625Srvb CFSDEBUG(CFS_CLOSE, myprintf(("close: result %d\n",error)); ) 52838625Srvb return(error); 52938625Srvb} 53038625Srvb 53138625Srvbint 53238625Srvbcfs_read(v) 53338625Srvb void *v; 53438625Srvb{ 53538625Srvb struct vop_read_args *ap = v; 53638625Srvb 53738625Srvb ENTRY; 53838625Srvb return(cfs_rdwr(ap->a_vp, ap->a_uio, UIO_READ, 53938625Srvb ap->a_ioflag, ap->a_cred, ap->a_uio->uio_procp)); 54038625Srvb} 54138625Srvb 54238625Srvbint 54338625Srvbcfs_write(v) 54438625Srvb void *v; 54538625Srvb{ 54638625Srvb struct vop_write_args *ap = v; 54738625Srvb 54838625Srvb ENTRY; 54938625Srvb return(cfs_rdwr(ap->a_vp, ap->a_uio, UIO_WRITE, 55038625Srvb ap->a_ioflag, ap->a_cred, ap->a_uio->uio_procp)); 55138625Srvb} 55238625Srvb 55338625Srvbint 55438625Srvbcfs_rdwr(vp, uiop, rw, ioflag, cred, p) 55538625Srvb struct vnode *vp; 55638625Srvb struct uio *uiop; 55738625Srvb enum uio_rw rw; 55838625Srvb int ioflag; 55938625Srvb struct ucred *cred; 56038625Srvb struct proc *p; 56138625Srvb{ 56238625Srvb/* upcall decl */ 56338625Srvb /* NOTE: container file operation!!! */ 56438625Srvb/* locals */ 56538625Srvb struct cnode *cp = VTOC(vp); 56638625Srvb struct vnode *cfvp = cp->c_ovp; 56738625Srvb int igot_internally = 0; 56838625Srvb int opened_internally = 0; 56938625Srvb int error = 0; 57038625Srvb 57138625Srvb MARK_ENTRY(CFS_RDWR_STATS); 57238625Srvb 57338625Srvb CFSDEBUG(CFS_RDWR, myprintf(("cfs_rdwr(%d, %p, %d, %qd, %d)\n", rw, 57438625Srvb uiop->uio_iov->iov_base, uiop->uio_resid, 57538625Srvb uiop->uio_offset, uiop->uio_segflg)); ) 57638625Srvb 57738625Srvb /* Check for rdwr of control object. */ 57838625Srvb if (IS_CTL_VP(vp)) { 57938625Srvb MARK_INT_FAIL(CFS_RDWR_STATS); 58038625Srvb return(EINVAL); 58138625Srvb } 58238625Srvb 58338625Srvb /* 58438625Srvb * If file is not already open this must be a page 58538625Srvb * {read,write} request. Iget the cache file's inode 58638625Srvb * pointer if we still have its <device, inode> pair. 58738625Srvb * Otherwise, we must do an internal open to derive the 58838625Srvb * pair. 58938625Srvb */ 59038625Srvb if (cfvp == NULL) { 59138625Srvb /* 59238625Srvb * If we're dumping core, do the internal open. Otherwise 59338625Srvb * venus won't have the correct size of the core when 59438625Srvb * it's completely written. 59538625Srvb */ 59638625Srvb if (cp->c_inode != 0 && !(p && (p->p_acflag & ACORE))) { 59738625Srvb igot_internally = 1; 59838625Srvb error = cfs_grab_vnode(cp->c_device, cp->c_inode, &cfvp); 59938625Srvb if (error) { 60038625Srvb MARK_INT_FAIL(CFS_RDWR_STATS); 60138625Srvb return(error); 60238625Srvb } 60338625Srvb /* 60438625Srvb * We get the vnode back locked in both Mach and 60538625Srvb * NetBSD. Needs unlocked 60638625Srvb */ 60738759Srvb VOP_UNLOCK(cfvp, 0, p); 60838625Srvb } 60938625Srvb else { 61038625Srvb opened_internally = 1; 61138625Srvb MARK_INT_GEN(CFS_OPEN_STATS); 61238625Srvb error = VOP_OPEN(vp, (rw == UIO_READ ? FREAD : FWRITE), 61338625Srvb cred, p); 61438625Srvbprintf("cfs_rdwr: Internally Opening %p\n", vp); 61538625Srvb if (error) { 61638625Srvb printf("cfs_rdwr: VOP_OPEN on container failed %d\n", error); 61738625Srvb return (error); 61838625Srvb } 61938625Srvb if (vp->v_type == VREG) { 62038625Srvb error = vfs_object_create(vp, p, cred, 1); 62138625Srvb if (error != 0) { 62238625Srvb printf("cfs_rdwr: vfs_object_create() returns %d\n", error); 62338625Srvb vput(vp); 62438625Srvb } 62538625Srvb } 62638625Srvb if (error) { 62738625Srvb MARK_INT_FAIL(CFS_RDWR_STATS); 62838625Srvb return(error); 62938625Srvb } 63038625Srvb cfvp = cp->c_ovp; 63138625Srvb } 63238625Srvb } 63338625Srvb 63438625Srvb /* Have UFS handle the call. */ 63538625Srvb CFSDEBUG(CFS_RDWR, myprintf(("indirect rdwr: fid = (%lx.%lx.%lx), refcnt = %d\n", 63638625Srvb cp->c_fid.Volume, cp->c_fid.Vnode, 63738625Srvb cp->c_fid.Unique, CTOV(cp)->v_usecount)); ) 63838625Srvb 63938625Srvb if (rw == UIO_READ) { 64038625Srvb error = VOP_READ(cfvp, uiop, ioflag, cred); 64138625Srvb } else { 64238625Srvb error = VOP_WRITE(cfvp, uiop, ioflag, cred); 64338625Srvb /* ufs_write updates the vnode_pager_setsize for the vnode/object */ 64438625Srvb { struct vattr attr; 64538625Srvb 64638625Srvb if (VOP_GETATTR(cfvp, &attr, cred, p) == 0) { 64738625Srvb vnode_pager_setsize(vp, attr.va_size); 64838625Srvb } 64938625Srvb } 65038625Srvb } 65138625Srvb 65238625Srvb if (error) 65338625Srvb MARK_INT_FAIL(CFS_RDWR_STATS); 65438625Srvb else 65538625Srvb MARK_INT_SAT(CFS_RDWR_STATS); 65638625Srvb 65738625Srvb /* Do an internal close if necessary. */ 65838625Srvb if (opened_internally) { 65938625Srvb MARK_INT_GEN(CFS_CLOSE_STATS); 66038625Srvb (void)VOP_CLOSE(vp, (rw == UIO_READ ? FREAD : FWRITE), cred, p); 66138625Srvb } 66238625Srvb 66338625Srvb /* Invalidate cached attributes if writing. */ 66438625Srvb if (rw == UIO_WRITE) 66538625Srvb cp->c_flags &= ~C_VATTR; 66638625Srvb return(error); 66738625Srvb} 66838625Srvb 66938625Srvbint 67038625Srvbcfs_ioctl(v) 67138625Srvb void *v; 67238625Srvb{ 67338625Srvb/* true args */ 67438625Srvb struct vop_ioctl_args *ap = v; 67538625Srvb struct vnode *vp = ap->a_vp; 67638625Srvb int com = ap->a_command; 67738625Srvb caddr_t data = ap->a_data; 67838625Srvb int flag = ap->a_fflag; 67938625Srvb struct ucred *cred = ap->a_cred; 68038625Srvb struct proc *p = ap->a_p; 68138625Srvb/* locals */ 68238625Srvb int error; 68338625Srvb struct vnode *tvp; 68438625Srvb struct nameidata ndp; 68538625Srvb struct PioctlData *iap = (struct PioctlData *)data; 68638625Srvb 68738625Srvb MARK_ENTRY(CFS_IOCTL_STATS); 68838625Srvb 68938625Srvb CFSDEBUG(CFS_IOCTL, myprintf(("in cfs_ioctl on %s\n", iap->path));) 69038625Srvb 69138625Srvb /* Don't check for operation on a dying object, for ctlvp it 69238625Srvb shouldn't matter */ 69338625Srvb 69438625Srvb /* Must be control object to succeed. */ 69538625Srvb if (!IS_CTL_VP(vp)) { 69638625Srvb MARK_INT_FAIL(CFS_IOCTL_STATS); 69738625Srvb CFSDEBUG(CFS_IOCTL, myprintf(("cfs_ioctl error: vp != ctlvp"));) 69838625Srvb return (EOPNOTSUPP); 69938625Srvb } 70038625Srvb /* Look up the pathname. */ 70138625Srvb 70238625Srvb /* Should we use the name cache here? It would get it from 70338625Srvb lookupname sooner or later anyway, right? */ 70438625Srvb 70538625Srvb NDINIT(&ndp, LOOKUP, (iap->follow ? FOLLOW : NOFOLLOW), UIO_USERSPACE, ((caddr_t)iap->path), p); 70638625Srvb error = namei(&ndp); 70738625Srvb tvp = ndp.ni_vp; 70838625Srvb 70938625Srvb if (error) { 71038625Srvb MARK_INT_FAIL(CFS_IOCTL_STATS); 71138625Srvb CFSDEBUG(CFS_IOCTL, myprintf(("cfs_ioctl error: lookup returns %d\n", 71238625Srvb error));) 71338625Srvb return(error); 71438625Srvb } 71538625Srvb 71638625Srvb /* 71738625Srvb * Make sure this is a coda style cnode, but it may be a 71838625Srvb * different vfsp 71938625Srvb */ 72038625Srvb /* XXX: this totally violates the comment about vtagtype in vnode.h */ 72138625Srvb if (tvp->v_tag != VT_CFS) { 72238625Srvb vrele(tvp); 72338625Srvb MARK_INT_FAIL(CFS_IOCTL_STATS); 72438625Srvb CFSDEBUG(CFS_IOCTL, 72538625Srvb myprintf(("cfs_ioctl error: %s not a coda object\n", 72638625Srvb iap->path));) 72738625Srvb return(EINVAL); 72838625Srvb } 72938625Srvb 73038625Srvb if (iap->vi.in_size > VC_MAXDATASIZE) { 73138625Srvb vrele(tvp); 73238625Srvb return(EINVAL); 73338625Srvb } 73438625Srvb error = venus_ioctl(vtomi(tvp), &((VTOC(tvp))->c_fid), com, flag, data, cred, p); 73538625Srvb 73638625Srvb if (error) 73738625Srvb MARK_INT_FAIL(CFS_IOCTL_STATS); 73838625Srvb else 73938625Srvb CFSDEBUG(CFS_IOCTL, myprintf(("Ioctl returns %d \n", error)); ) 74038625Srvb 74138625Srvb vrele(tvp); 74238625Srvb return(error); 74338625Srvb} 74438625Srvb 74538625Srvb/* 74638625Srvb * To reduce the cost of a user-level venus;we cache attributes in 74738625Srvb * the kernel. Each cnode has storage allocated for an attribute. If 74838625Srvb * c_vattr is valid, return a reference to it. Otherwise, get the 74938625Srvb * attributes from venus and store them in the cnode. There is some 75038625Srvb * question if this method is a security leak. But I think that in 75138625Srvb * order to make this call, the user must have done a lookup and 75238625Srvb * opened the file, and therefore should already have access. 75338625Srvb */ 75438625Srvbint 75538625Srvbcfs_getattr(v) 75638625Srvb void *v; 75738625Srvb{ 75838625Srvb/* true args */ 75938625Srvb struct vop_getattr_args *ap = v; 76038625Srvb struct vnode *vp = ap->a_vp; 76138625Srvb struct cnode *cp = VTOC(vp); 76238625Srvb struct vattr *vap = ap->a_vap; 76338625Srvb struct ucred *cred = ap->a_cred; 76438625Srvb struct proc *p = ap->a_p; 76538625Srvb/* locals */ 76638625Srvb int error; 76738625Srvb 76838625Srvb MARK_ENTRY(CFS_GETATTR_STATS); 76938625Srvb 77038625Srvb if (IS_UNMOUNTING(cp)) 77138625Srvb return ENODEV; 77238759Srvb 77338625Srvb /* Check for getattr of control object. */ 77438625Srvb if (IS_CTL_VP(vp)) { 77538625Srvb MARK_INT_FAIL(CFS_GETATTR_STATS); 77638625Srvb return(ENOENT); 77738625Srvb } 77838625Srvb 77938625Srvb /* Check to see if the attributes have already been cached */ 78038625Srvb if (VALID_VATTR(cp)) { 78138625Srvb CFSDEBUG(CFS_GETATTR, { myprintf(("attr cache hit: (%lx.%lx.%lx)\n", 78238625Srvb cp->c_fid.Volume, 78338625Srvb cp->c_fid.Vnode, 78438625Srvb cp->c_fid.Unique));}); 78538625Srvb CFSDEBUG(CFS_GETATTR, if (!(cfsdebug & ~CFS_GETATTR)) 78638625Srvb print_vattr(&cp->c_vattr); ); 78738625Srvb 78838625Srvb *vap = cp->c_vattr; 78938625Srvb MARK_INT_SAT(CFS_GETATTR_STATS); 79038625Srvb return(0); 79138625Srvb } 79238625Srvb 79338625Srvb error = venus_getattr(vtomi(vp), &cp->c_fid, cred, p, vap); 79438625Srvb 79538625Srvb if (!error) { 79638625Srvb CFSDEBUG(CFS_GETATTR, myprintf(("getattr miss (%lx.%lx.%lx): result %d\n", 79738625Srvb cp->c_fid.Volume, 79838625Srvb cp->c_fid.Vnode, 79938625Srvb cp->c_fid.Unique, 80038625Srvb error)); ) 80138625Srvb 80238625Srvb CFSDEBUG(CFS_GETATTR, if (!(cfsdebug & ~CFS_GETATTR)) 80338625Srvb print_vattr(vap); ); 80438625Srvb 80538625Srvb { int size = vap->va_size; 80638625Srvb struct vnode *convp = cp->c_ovp; 80738625Srvb if (convp != (struct vnode *)0) { 80838625Srvb vnode_pager_setsize(convp, size); 80938625Srvb } 81038625Srvb } 81138625Srvb /* If not open for write, store attributes in cnode */ 81238625Srvb if ((cp->c_owrite == 0) && (cfs_attr_cache)) { 81338625Srvb cp->c_vattr = *vap; 81438625Srvb cp->c_flags |= C_VATTR; 81538625Srvb } 81638625Srvb 81738625Srvb } 81838625Srvb return(error); 81938625Srvb} 82038625Srvb 82138625Srvbint 82238625Srvbcfs_setattr(v) 82338625Srvb void *v; 82438625Srvb{ 82538625Srvb/* true args */ 82638625Srvb struct vop_setattr_args *ap = v; 82738625Srvb register struct vnode *vp = ap->a_vp; 82838625Srvb struct cnode *cp = VTOC(vp); 82938625Srvb register struct vattr *vap = ap->a_vap; 83038625Srvb struct ucred *cred = ap->a_cred; 83138625Srvb struct proc *p = ap->a_p; 83238625Srvb/* locals */ 83338625Srvb int error; 83438625Srvb 83538625Srvb MARK_ENTRY(CFS_SETATTR_STATS); 83638625Srvb 83738625Srvb /* Check for setattr of control object. */ 83838625Srvb if (IS_CTL_VP(vp)) { 83938625Srvb MARK_INT_FAIL(CFS_SETATTR_STATS); 84038625Srvb return(ENOENT); 84138625Srvb } 84238625Srvb 84338625Srvb if (cfsdebug & CFSDBGMSK(CFS_SETATTR)) { 84438625Srvb print_vattr(vap); 84538625Srvb } 84638625Srvb error = venus_setattr(vtomi(vp), &cp->c_fid, vap, cred, p); 84738625Srvb 84838625Srvb if (!error) 84938625Srvb cp->c_flags &= ~C_VATTR; 85038625Srvb 85138625Srvb { int size = vap->va_size; 85238625Srvb struct vnode *convp = cp->c_ovp; 85338625Srvb if (size != VNOVAL && convp != (struct vnode *)0) { 85438625Srvb vnode_pager_setsize(convp, size); 85538625Srvb } 85638625Srvb } 85738625Srvb CFSDEBUG(CFS_SETATTR, myprintf(("setattr %d\n", error)); ) 85838625Srvb return(error); 85938625Srvb} 86038625Srvb 86138625Srvbint 86238625Srvbcfs_access(v) 86338625Srvb void *v; 86438625Srvb{ 86538625Srvb/* true args */ 86638625Srvb struct vop_access_args *ap = v; 86738625Srvb struct vnode *vp = ap->a_vp; 86838625Srvb struct cnode *cp = VTOC(vp); 86938625Srvb int mode = ap->a_mode; 87038625Srvb struct ucred *cred = ap->a_cred; 87138625Srvb struct proc *p = ap->a_p; 87238625Srvb/* locals */ 87338625Srvb int error; 87438625Srvb 87538625Srvb MARK_ENTRY(CFS_ACCESS_STATS); 87638625Srvb 87738625Srvb /* Check for access of control object. Only read access is 87838625Srvb allowed on it. */ 87938625Srvb if (IS_CTL_VP(vp)) { 88038625Srvb /* bogus hack - all will be marked as successes */ 88138625Srvb MARK_INT_SAT(CFS_ACCESS_STATS); 88238625Srvb return(((mode & VREAD) && !(mode & (VWRITE | VEXEC))) 88338625Srvb ? 0 : EACCES); 88438625Srvb } 88538625Srvb 88638625Srvb /* 88738625Srvb * if the file is a directory, and we are checking exec (eg lookup) 88838625Srvb * access, and the file is in the namecache, then the user must have 88938625Srvb * lookup access to it. 89038625Srvb */ 89138625Srvb if (cfs_access_cache) { 89238625Srvb if ((vp->v_type == VDIR) && (mode & VEXEC)) { 89338625Srvb if (cfsnc_lookup(cp, ".", 1, cred)) { 89438625Srvb MARK_INT_SAT(CFS_ACCESS_STATS); 89538625Srvb return(0); /* it was in the cache */ 89638625Srvb } 89738625Srvb } 89838625Srvb } 89938625Srvb 90038625Srvb error = venus_access(vtomi(vp), &cp->c_fid, mode, cred, p); 90138625Srvb 90238625Srvb return(error); 90338625Srvb} 90438625Srvb 90538625Srvb/* 90638625Srvb * CFS abort op, called after namei() when a CREATE/DELETE isn't actually 90738625Srvb * done. If a buffer has been saved in anticipation of a cfs_create or 90838625Srvb * a cfs_remove, delete it. 90938625Srvb */ 91038625Srvb/* ARGSUSED */ 91138625Srvbint 91238625Srvbcfs_abortop(v) 91338625Srvb void *v; 91438625Srvb{ 91538625Srvb/* true args */ 91638625Srvb struct vop_abortop_args /* { 91738625Srvb struct vnode *a_dvp; 91838625Srvb struct componentname *a_cnp; 91938625Srvb } */ *ap = v; 92038625Srvb/* upcall decl */ 92138625Srvb/* locals */ 92238625Srvb 92338625Srvb if ((ap->a_cnp->cn_flags & (HASBUF | SAVESTART)) == HASBUF) 92438759Srvb zfree(namei_zone, ap->a_cnp->cn_pnbuf); 92538625Srvb return (0); 92638625Srvb} 92738625Srvb 92838625Srvbint 92938625Srvbcfs_readlink(v) 93038625Srvb void *v; 93138625Srvb{ 93238625Srvb/* true args */ 93338625Srvb struct vop_readlink_args *ap = v; 93438625Srvb struct vnode *vp = ap->a_vp; 93538625Srvb struct cnode *cp = VTOC(vp); 93638625Srvb struct uio *uiop = ap->a_uio; 93738625Srvb struct ucred *cred = ap->a_cred; 93838625Srvb struct proc *p = ap->a_uio->uio_procp; 93938625Srvb/* locals */ 94038625Srvb int error; 94138625Srvb char *str; 94238625Srvb int len; 94338625Srvb 94438625Srvb MARK_ENTRY(CFS_READLINK_STATS); 94538625Srvb 94638625Srvb /* Check for readlink of control object. */ 94738625Srvb if (IS_CTL_VP(vp)) { 94838625Srvb MARK_INT_FAIL(CFS_READLINK_STATS); 94938625Srvb return(ENOENT); 95038625Srvb } 95138625Srvb 95238625Srvb if ((cfs_symlink_cache) && (VALID_SYMLINK(cp))) { /* symlink was cached */ 95338625Srvb uiop->uio_rw = UIO_READ; 95438625Srvb error = uiomove(cp->c_symlink, (int)cp->c_symlen, uiop); 95538625Srvb if (error) 95638625Srvb MARK_INT_FAIL(CFS_READLINK_STATS); 95738625Srvb else 95838625Srvb MARK_INT_SAT(CFS_READLINK_STATS); 95938625Srvb return(error); 96038625Srvb } 96138625Srvb 96238625Srvb error = venus_readlink(vtomi(vp), &cp->c_fid, cred, p, &str, &len); 96338625Srvb 96438625Srvb if (!error) { 96538625Srvb uiop->uio_rw = UIO_READ; 96638625Srvb error = uiomove(str, len, uiop); 96738625Srvb 96838625Srvb if (cfs_symlink_cache) { 96938625Srvb cp->c_symlink = str; 97038625Srvb cp->c_symlen = len; 97138625Srvb cp->c_flags |= C_SYMLINK; 97238625Srvb } else 97338625Srvb CFS_FREE(str, len); 97438625Srvb } 97538625Srvb 97638625Srvb CFSDEBUG(CFS_READLINK, myprintf(("in readlink result %d\n",error));) 97738625Srvb return(error); 97838625Srvb} 97938625Srvb 98038625Srvbint 98138625Srvbcfs_fsync(v) 98238625Srvb void *v; 98338625Srvb{ 98438625Srvb/* true args */ 98538625Srvb struct vop_fsync_args *ap = v; 98638625Srvb struct vnode *vp = ap->a_vp; 98738625Srvb struct cnode *cp = VTOC(vp); 98838625Srvb struct ucred *cred = ap->a_cred; 98938625Srvb struct proc *p = ap->a_p; 99038625Srvb/* locals */ 99138625Srvb struct vnode *convp = cp->c_ovp; 99238625Srvb int error; 99338625Srvb 99438625Srvb MARK_ENTRY(CFS_FSYNC_STATS); 99538625Srvb 99638625Srvb /* Check for fsync on an unmounting object */ 99738625Srvb /* The NetBSD kernel, in it's infinite wisdom, can try to fsync 99838625Srvb * after an unmount has been initiated. This is a Bad Thing, 99938625Srvb * which we have to avoid. Not a legitimate failure for stats. 100038625Srvb */ 100138625Srvb if (IS_UNMOUNTING(cp)) { 100238625Srvb return(ENODEV); 100338625Srvb } 100438625Srvb 100538625Srvb /* Check for fsync of control object. */ 100638625Srvb if (IS_CTL_VP(vp)) { 100738625Srvb MARK_INT_SAT(CFS_FSYNC_STATS); 100838625Srvb return(0); 100938625Srvb } 101038625Srvb 101138625Srvb if (convp) 101238625Srvb VOP_FSYNC(convp, cred, MNT_WAIT, p); 101338625Srvb 101438625Srvb /* 101538625Srvb * We see fsyncs with usecount == 1 then usecount == 0. 101638625Srvb * For now we ignore them. 101738625Srvb */ 101838625Srvb /* 101938625Srvb if (!vp->v_usecount) { 102038625Srvb printf("cfs_fsync on vnode %p with %d usecount. c_flags = %x (%x)\n", 102138625Srvb vp, vp->v_usecount, cp->c_flags, cp->c_flags&C_PURGING); 102238625Srvb } 102338625Srvb */ 102438625Srvb 102538625Srvb /* 102638625Srvb * We can expect fsync on any vnode at all if venus is pruging it. 102738625Srvb * Venus can't very well answer the fsync request, now can it? 102838625Srvb * Hopefully, it won't have to, because hopefully, venus preserves 102938625Srvb * the (possibly untrue) invariant that it never purges an open 103038625Srvb * vnode. Hopefully. 103138625Srvb */ 103238625Srvb if (cp->c_flags & C_PURGING) { 103338625Srvb return(0); 103438625Srvb } 103538625Srvb 103638625Srvb /* needs research */ 103738625Srvb return 0; 103838625Srvb error = venus_fsync(vtomi(vp), &cp->c_fid, cred, p); 103938625Srvb 104038625Srvb CFSDEBUG(CFS_FSYNC, myprintf(("in fsync result %d\n",error)); ); 104138625Srvb return(error); 104238625Srvb} 104338625Srvb 104438625Srvbint 104538625Srvbcfs_inactive(v) 104638625Srvb void *v; 104738625Srvb{ 104838625Srvb /* XXX - at the moment, inactive doesn't look at cred, and doesn't 104938625Srvb have a proc pointer. Oops. */ 105038625Srvb/* true args */ 105138625Srvb struct vop_inactive_args *ap = v; 105238625Srvb struct vnode *vp = ap->a_vp; 105338625Srvb struct cnode *cp = VTOC(vp); 105438625Srvb struct ucred *cred __attribute__((unused)) = NULL; 105538625Srvb struct proc *p __attribute__((unused)) = curproc; 105638625Srvb/* upcall decl */ 105738625Srvb/* locals */ 105838625Srvb 105938625Srvb /* We don't need to send inactive to venus - DCS */ 106038625Srvb MARK_ENTRY(CFS_INACTIVE_STATS); 106138625Srvb 106238625Srvb if (IS_CTL_VP(vp)) { 106338625Srvb MARK_INT_SAT(CFS_INACTIVE_STATS); 106438625Srvb return 0; 106538625Srvb } 106638625Srvb 106738625Srvb CFSDEBUG(CFS_INACTIVE, myprintf(("in inactive, %lx.%lx.%lx. vfsp %p\n", 106838625Srvb cp->c_fid.Volume, cp->c_fid.Vnode, 106938625Srvb cp->c_fid.Unique, vp->v_mount));) 107038625Srvb 107138625Srvb /* If an array has been allocated to hold the symlink, deallocate it */ 107238625Srvb if ((cfs_symlink_cache) && (VALID_SYMLINK(cp))) { 107338625Srvb if (cp->c_symlink == NULL) 107438625Srvb panic("cfs_inactive: null symlink pointer in cnode"); 107538625Srvb 107638625Srvb CFS_FREE(cp->c_symlink, cp->c_symlen); 107738625Srvb cp->c_flags &= ~C_SYMLINK; 107838625Srvb cp->c_symlen = 0; 107938625Srvb } 108038625Srvb 108138625Srvb /* Remove it from the table so it can't be found. */ 108238625Srvb cfs_unsave(cp); 108338625Srvb if ((struct cfs_mntinfo *)(vp->v_mount->mnt_data) == NULL) { 108438625Srvb myprintf(("Help! vfsp->vfs_data was NULL, but vnode %p wasn't dying\n", vp)); 108538625Srvb panic("badness in cfs_inactive\n"); 108638625Srvb } 108738625Srvb 108838625Srvb if (IS_UNMOUNTING(cp)) { 108938625Srvb#ifdef DEBUG 109038625Srvb printf("cfs_inactive: IS_UNMOUNTING use %d: vp %p, cp %p\n", vp->v_usecount, vp, cp); 109138625Srvb if (cp->c_ovp != NULL) 109238625Srvb printf("cfs_inactive: cp->ovp != NULL use %d: vp %p, cp %p\n", 109338625Srvb vp->v_usecount, vp, cp); 109438625Srvb#endif 109538759Srvb lockmgr(&cp->c_lock, LK_RELEASE, &vp->v_interlock, p); 109638625Srvb } else { 109738625Srvb#ifdef DIAGNOSTIC 109838625Srvb if (CTOV(cp)->v_usecount) { 109938625Srvb panic("cfs_inactive: nonzero reference count"); 110038625Srvb } 110138625Srvb if (cp->c_ovp != NULL) { 110238625Srvb panic("cfs_inactive: cp->ovp != NULL"); 110338625Srvb } 110438625Srvb#endif 110538759Srvb VOP_UNLOCK(vp, 0, p); 110638625Srvb vgone(vp); 110738625Srvb } 110838625Srvb 110938625Srvb MARK_INT_SAT(CFS_INACTIVE_STATS); 111038625Srvb return(0); 111138625Srvb} 111238625Srvb 111338625Srvb/* 111438625Srvb * Remote file system operations having to do with directory manipulation. 111538625Srvb */ 111638625Srvb 111738625Srvb/* 111838625Srvb * It appears that in NetBSD, lookup is supposed to return the vnode locked 111938625Srvb */ 112038625Srvbint 112138625Srvbcfs_lookup(v) 112238625Srvb void *v; 112338625Srvb{ 112438625Srvb/* true args */ 112538625Srvb struct vop_lookup_args *ap = v; 112638625Srvb struct vnode *dvp = ap->a_dvp; 112738625Srvb struct cnode *dcp = VTOC(dvp); 112838625Srvb struct vnode **vpp = ap->a_vpp; 112938625Srvb /* 113038625Srvb * It looks as though ap->a_cnp->ni_cnd->cn_nameptr holds the rest 113138625Srvb * of the string to xlate, and that we must try to get at least 113238625Srvb * ap->a_cnp->ni_cnd->cn_namelen of those characters to macth. I 113338625Srvb * could be wrong. 113438625Srvb */ 113538625Srvb struct componentname *cnp = ap->a_cnp; 113638625Srvb struct ucred *cred = cnp->cn_cred; 113738625Srvb struct proc *p = cnp->cn_proc; 113838625Srvb/* locals */ 113938625Srvb struct cnode *cp; 114038625Srvb const char *nm = cnp->cn_nameptr; 114138625Srvb int len = cnp->cn_namelen; 114238625Srvb ViceFid VFid; 114338625Srvb int vtype; 114438625Srvb int error = 0; 114538625Srvb 114638625Srvb MARK_ENTRY(CFS_LOOKUP_STATS); 114738625Srvb 114838625Srvb CFSDEBUG(CFS_LOOKUP, myprintf(("lookup: %s in %lx.%lx.%lx\n", 114938625Srvb nm, dcp->c_fid.Volume, 115038625Srvb dcp->c_fid.Vnode, dcp->c_fid.Unique));); 115138625Srvb 115238625Srvb /* Check for lookup of control object. */ 115338625Srvb if (IS_CTL_NAME(dvp, nm, len)) { 115438625Srvb *vpp = cfs_ctlvp; 115538625Srvb vref(*vpp); 115638625Srvb MARK_INT_SAT(CFS_LOOKUP_STATS); 115738625Srvb goto exit; 115838625Srvb } 115938625Srvb 116038625Srvb if (len+1 > CFS_MAXNAMLEN) { 116138625Srvb MARK_INT_FAIL(CFS_LOOKUP_STATS); 116238625Srvb CFSDEBUG(CFS_LOOKUP, myprintf(("name too long: lookup, %lx.%lx.%lx(%s)\n", 116338625Srvb dcp->c_fid.Volume, dcp->c_fid.Vnode, 116438625Srvb dcp->c_fid.Unique, nm));); 116538625Srvb *vpp = (struct vnode *)0; 116638625Srvb error = EINVAL; 116738625Srvb goto exit; 116838625Srvb } 116938625Srvb /* First try to look the file up in the cfs name cache */ 117038625Srvb /* lock the parent vnode? */ 117138625Srvb cp = cfsnc_lookup(dcp, nm, len, cred); 117238625Srvb if (cp) { 117338625Srvb *vpp = CTOV(cp); 117438625Srvb vref(*vpp); 117538625Srvb CFSDEBUG(CFS_LOOKUP, 117638625Srvb myprintf(("lookup result %d vpp %p\n",error,*vpp));) 117738625Srvb } else { 117838625Srvb 117938625Srvb /* The name wasn't cached, so we need to contact Venus */ 118038625Srvb error = venus_lookup(vtomi(dvp), &dcp->c_fid, nm, len, cred, p, &VFid, &vtype); 118138625Srvb 118238625Srvb if (error) { 118338625Srvb MARK_INT_FAIL(CFS_LOOKUP_STATS); 118438625Srvb CFSDEBUG(CFS_LOOKUP, myprintf(("lookup error on %lx.%lx.%lx(%s)%d\n", 118538625Srvb dcp->c_fid.Volume, dcp->c_fid.Vnode, dcp->c_fid.Unique, nm, error));) 118638625Srvb *vpp = (struct vnode *)0; 118738625Srvb } else { 118838625Srvb MARK_INT_SAT(CFS_LOOKUP_STATS); 118938625Srvb CFSDEBUG(CFS_LOOKUP, 119038625Srvb myprintf(("lookup: vol %lx vno %lx uni %lx type %o result %d\n", 119138625Srvb VFid.Volume, VFid.Vnode, VFid.Unique, vtype, 119238625Srvb error)); ) 119338625Srvb 119438625Srvb cp = makecfsnode(&VFid, dvp->v_mount, vtype); 119538625Srvb *vpp = CTOV(cp); 119638625Srvb 119738625Srvb /* enter the new vnode in the Name Cache only if the top bit isn't set */ 119838625Srvb /* And don't enter a new vnode for an invalid one! */ 119938759Srvb if (!(vtype & CFS_NOCACHE)) 120038625Srvb cfsnc_enter(VTOC(dvp), nm, len, cred, VTOC(*vpp)); 120138625Srvb } 120238625Srvb } 120338625Srvb 120438625Srvb exit: 120538625Srvb /* 120638625Srvb * If we are creating, and this was the last name to be looked up, 120738625Srvb * and the error was ENOENT, then there really shouldn't be an 120838625Srvb * error and we can make the leaf NULL and return success. Since 120938625Srvb * this is supposed to work under Mach as well as NetBSD, we're 121038625Srvb * leaving this fn wrapped. We also must tell lookup/namei that 121138625Srvb * we need to save the last component of the name. (Create will 121238625Srvb * have to free the name buffer later...lucky us...) 121338625Srvb */ 121438625Srvb if (((cnp->cn_nameiop == CREATE) || (cnp->cn_nameiop == RENAME)) 121538625Srvb && (cnp->cn_flags & ISLASTCN) 121638625Srvb && (error == ENOENT)) 121738625Srvb { 121838625Srvb error = EJUSTRETURN; 121938625Srvb cnp->cn_flags |= SAVENAME; 122038625Srvb *ap->a_vpp = NULL; 122138625Srvb } 122238625Srvb 122338625Srvb /* 122438625Srvb * If we are removing, and we are at the last element, and we 122538625Srvb * found it, then we need to keep the name around so that the 122638625Srvb * removal will go ahead as planned. Unfortunately, this will 122738625Srvb * probably also lock the to-be-removed vnode, which may or may 122838625Srvb * not be a good idea. I'll have to look at the bits of 122938625Srvb * cfs_remove to make sure. We'll only save the name if we did in 123038625Srvb * fact find the name, otherwise cfs_remove won't have a chance 123138625Srvb * to free the pathname. 123238625Srvb */ 123338625Srvb if ((cnp->cn_nameiop == DELETE) 123438625Srvb && (cnp->cn_flags & ISLASTCN) 123538625Srvb && !error) 123638625Srvb { 123738625Srvb cnp->cn_flags |= SAVENAME; 123838625Srvb } 123938625Srvb 124038625Srvb /* 124138625Srvb * If the lookup went well, we need to (potentially?) unlock the 124238625Srvb * parent, and lock the child. We are only responsible for 124338625Srvb * checking to see if the parent is supposed to be unlocked before 124438625Srvb * we return. We must always lock the child (provided there is 124538625Srvb * one, and (the parent isn't locked or it isn't the same as the 124638625Srvb * parent.) Simple, huh? We can never leave the parent locked unless 124738625Srvb * we are ISLASTCN 124838625Srvb */ 124938625Srvb if (!error || (error == EJUSTRETURN)) { 125038625Srvb if (!(cnp->cn_flags & LOCKPARENT) || !(cnp->cn_flags & ISLASTCN)) { 125138759Srvb if ((error = VOP_UNLOCK(dvp, 0, p))) { 125238625Srvb return error; 125338625Srvb } 125438625Srvb /* 125538625Srvb * The parent is unlocked. As long as there is a child, 125638625Srvb * lock it without bothering to check anything else. 125738625Srvb */ 125838625Srvb if (*ap->a_vpp) { 125938759Srvb if ((error = VOP_LOCK(*ap->a_vpp, LK_EXCLUSIVE, p))) { 126038625Srvb printf("cfs_lookup: "); 126138625Srvb panic("unlocked parent but couldn't lock child"); 126238625Srvb } 126338625Srvb } 126438625Srvb } else { 126538625Srvb /* The parent is locked, and may be the same as the child */ 126638625Srvb if (*ap->a_vpp && (*ap->a_vpp != dvp)) { 126738625Srvb /* Different, go ahead and lock it. */ 126838759Srvb if ((error = VOP_LOCK(*ap->a_vpp, LK_EXCLUSIVE, p))) { 126938625Srvb printf("cfs_lookup: "); 127038625Srvb panic("unlocked parent but couldn't lock child"); 127138625Srvb } 127238625Srvb } 127338625Srvb } 127438625Srvb } else { 127538625Srvb /* If the lookup failed, we need to ensure that the leaf is NULL */ 127638625Srvb /* Don't change any locking? */ 127738625Srvb *ap->a_vpp = NULL; 127838625Srvb } 127938625Srvb return(error); 128038625Srvb} 128138625Srvb 128238625Srvb/*ARGSUSED*/ 128338625Srvbint 128438625Srvbcfs_create(v) 128538625Srvb void *v; 128638625Srvb{ 128738625Srvb/* true args */ 128838625Srvb struct vop_create_args *ap = v; 128938625Srvb struct vnode *dvp = ap->a_dvp; 129038625Srvb struct cnode *dcp = VTOC(dvp); 129138625Srvb struct vattr *va = ap->a_vap; 129238625Srvb int exclusive = 1; 129338625Srvb int mode = ap->a_vap->va_mode; 129438625Srvb struct vnode **vpp = ap->a_vpp; 129538625Srvb struct componentname *cnp = ap->a_cnp; 129638625Srvb struct ucred *cred = cnp->cn_cred; 129738625Srvb struct proc *p = cnp->cn_proc; 129838625Srvb/* locals */ 129938625Srvb int error; 130038625Srvb struct cnode *cp; 130138625Srvb const char *nm = cnp->cn_nameptr; 130238625Srvb int len = cnp->cn_namelen; 130338625Srvb ViceFid VFid; 130438625Srvb struct vattr attr; 130538625Srvb 130638625Srvb MARK_ENTRY(CFS_CREATE_STATS); 130738625Srvb 130838625Srvb /* All creates are exclusive XXX */ 130938625Srvb /* I'm assuming the 'mode' argument is the file mode bits XXX */ 131038625Srvb 131138625Srvb /* Check for create of control object. */ 131238625Srvb if (IS_CTL_NAME(dvp, nm, len)) { 131338625Srvb *vpp = (struct vnode *)0; 131438625Srvb MARK_INT_FAIL(CFS_CREATE_STATS); 131538625Srvb return(EACCES); 131638625Srvb } 131738625Srvb 131838625Srvb error = venus_create(vtomi(dvp), &dcp->c_fid, nm, len, exclusive, mode, va, cred, p, &VFid, &attr); 131938625Srvb 132038625Srvb if (!error) { 132138625Srvb 132238625Srvb /* If this is an exclusive create, panic if the file already exists. */ 132338625Srvb /* Venus should have detected the file and reported EEXIST. */ 132438625Srvb 132538625Srvb if ((exclusive == 1) && 132638625Srvb (cfs_find(&VFid) != NULL)) 132738625Srvb panic("cnode existed for newly created file!"); 132838625Srvb 132938625Srvb cp = makecfsnode(&VFid, dvp->v_mount, attr.va_type); 133038625Srvb *vpp = CTOV(cp); 133138625Srvb 133238625Srvb /* Update va to reflect the new attributes. */ 133338625Srvb (*va) = attr; 133438625Srvb 133538625Srvb /* Update the attribute cache and mark it as valid */ 133638625Srvb if (cfs_attr_cache) { 133738625Srvb VTOC(*vpp)->c_vattr = attr; 133838625Srvb VTOC(*vpp)->c_flags |= C_VATTR; 133938625Srvb } 134038625Srvb 134138625Srvb /* Invalidate the parent's attr cache, the modification time has changed */ 134238625Srvb VTOC(dvp)->c_flags &= ~C_VATTR; 134338625Srvb 134438625Srvb /* enter the new vnode in the Name Cache */ 134538625Srvb cfsnc_enter(VTOC(dvp), nm, len, cred, VTOC(*vpp)); 134638625Srvb 134738625Srvb CFSDEBUG(CFS_CREATE, 134838625Srvb myprintf(("create: (%lx.%lx.%lx), result %d\n", 134938625Srvb VFid.Volume, VFid.Vnode, VFid.Unique, error)); ) 135038625Srvb } else { 135138625Srvb *vpp = (struct vnode *)0; 135238625Srvb CFSDEBUG(CFS_CREATE, myprintf(("create error %d\n", error));) 135338625Srvb } 135438625Srvb 135538625Srvb if (!error) { 135638625Srvb if (cnp->cn_flags & LOCKLEAF) { 135738759Srvb if ((error = VOP_LOCK(*ap->a_vpp, LK_EXCLUSIVE, p))) { 135838625Srvb printf("cfs_create: "); 135938625Srvb panic("unlocked parent but couldn't lock child"); 136038625Srvb } 136138625Srvb } 136238625Srvb#ifdef DIAGNOSTIC 136338625Srvb else { 136438625Srvb printf("cfs_create: LOCKLEAF not set!\n"); 136538625Srvb } 136638625Srvb#endif /* DIAGNOSTIC */ 136738625Srvb } 136838625Srvb /* Have to free the previously saved name */ 136938625Srvb /* 137038625Srvb * This condition is stolen from ufs_makeinode. I have no idea 137138625Srvb * why it's here, but what the hey... 137238625Srvb */ 137338625Srvb if ((cnp->cn_flags & SAVESTART) == 0) { 137438759Srvb zfree(namei_zone, cnp->cn_pnbuf); 137538625Srvb } 137638625Srvb return(error); 137738625Srvb} 137838625Srvb 137938625Srvbint 138038625Srvbcfs_remove(v) 138138625Srvb void *v; 138238625Srvb{ 138338625Srvb/* true args */ 138438625Srvb struct vop_remove_args *ap = v; 138538625Srvb struct vnode *dvp = ap->a_dvp; 138638625Srvb struct cnode *cp = VTOC(dvp); 138738625Srvb struct componentname *cnp = ap->a_cnp; 138838625Srvb struct ucred *cred = cnp->cn_cred; 138938625Srvb struct proc *p = cnp->cn_proc; 139038625Srvb/* locals */ 139138625Srvb int error; 139238625Srvb const char *nm = cnp->cn_nameptr; 139338625Srvb int len = cnp->cn_namelen; 139438625Srvb struct cnode *tp; 139538625Srvb 139638625Srvb MARK_ENTRY(CFS_REMOVE_STATS); 139738625Srvb 139838625Srvb CFSDEBUG(CFS_REMOVE, myprintf(("remove: %s in %lx.%lx.%lx\n", 139938625Srvb nm, cp->c_fid.Volume, cp->c_fid.Vnode, 140038625Srvb cp->c_fid.Unique));); 140138625Srvb 140238625Srvb /* Remove the file's entry from the CFS Name Cache */ 140338625Srvb /* We're being conservative here, it might be that this person 140438625Srvb * doesn't really have sufficient access to delete the file 140538625Srvb * but we feel zapping the entry won't really hurt anyone -- dcs 140638625Srvb */ 140738625Srvb /* I'm gonna go out on a limb here. If a file and a hardlink to it 140838625Srvb * exist, and one is removed, the link count on the other will be 140938625Srvb * off by 1. We could either invalidate the attrs if cached, or 141038625Srvb * fix them. I'll try to fix them. DCS 11/8/94 141138625Srvb */ 141238625Srvb tp = cfsnc_lookup(VTOC(dvp), nm, len, cred); 141338625Srvb if (tp) { 141438625Srvb if (VALID_VATTR(tp)) { /* If attrs are cached */ 141538625Srvb if (tp->c_vattr.va_nlink > 1) { /* If it's a hard link */ 141638625Srvb tp->c_vattr.va_nlink--; 141738625Srvb } 141838625Srvb } 141938625Srvb 142038625Srvb cfsnc_zapfile(VTOC(dvp), nm, len); 142138625Srvb /* No need to flush it if it doesn't exist! */ 142238625Srvb } 142338625Srvb /* Invalidate the parent's attr cache, the modification time has changed */ 142438625Srvb VTOC(dvp)->c_flags &= ~C_VATTR; 142538625Srvb 142638625Srvb /* Check for remove of control object. */ 142738625Srvb if (IS_CTL_NAME(dvp, nm, len)) { 142838625Srvb MARK_INT_FAIL(CFS_REMOVE_STATS); 142938625Srvb return(ENOENT); 143038625Srvb } 143138625Srvb 143238625Srvb error = venus_remove(vtomi(dvp), &cp->c_fid, nm, len, cred, p); 143338625Srvb 143438625Srvb CFSDEBUG(CFS_REMOVE, myprintf(("in remove result %d\n",error)); ) 143538625Srvb 143638625Srvb if ((cnp->cn_flags & SAVESTART) == 0) { 143738759Srvb zfree(namei_zone, cnp->cn_pnbuf); 143838625Srvb } 143938625Srvb return(error); 144038625Srvb} 144138625Srvb 144238625Srvbint 144338625Srvbcfs_link(v) 144438625Srvb void *v; 144538625Srvb{ 144638625Srvb/* true args */ 144738625Srvb struct vop_link_args *ap = v; 144838625Srvb struct vnode *vp = ap->a_vp; 144938625Srvb struct cnode *cp = VTOC(vp); 145038625Srvb struct vnode *tdvp = ap->a_tdvp; 145138625Srvb struct cnode *tdcp = VTOC(tdvp); 145238625Srvb struct componentname *cnp = ap->a_cnp; 145338625Srvb struct ucred *cred = cnp->cn_cred; 145438625Srvb struct proc *p = cnp->cn_proc; 145538625Srvb/* locals */ 145638625Srvb int error; 145738625Srvb const char *nm = cnp->cn_nameptr; 145838625Srvb int len = cnp->cn_namelen; 145938625Srvb 146038625Srvb MARK_ENTRY(CFS_LINK_STATS); 146138625Srvb 146238625Srvb if (cfsdebug & CFSDBGMSK(CFS_LINK)) { 146338625Srvb 146438625Srvb myprintf(("nb_link: vp fid: (%lx.%lx.%lx)\n", 146538625Srvb cp->c_fid.Volume, cp->c_fid.Vnode, cp->c_fid.Unique)); 146638625Srvb myprintf(("nb_link: tdvp fid: (%lx.%lx.%lx)\n", 146738625Srvb tdcp->c_fid.Volume, tdcp->c_fid.Vnode, tdcp->c_fid.Unique)); 146838625Srvb 146938625Srvb } 147038625Srvb if (cfsdebug & CFSDBGMSK(CFS_LINK)) { 147138625Srvb myprintf(("link: vp fid: (%lx.%lx.%lx)\n", 147238625Srvb cp->c_fid.Volume, cp->c_fid.Vnode, cp->c_fid.Unique)); 147338625Srvb myprintf(("link: tdvp fid: (%lx.%lx.%lx)\n", 147438625Srvb tdcp->c_fid.Volume, tdcp->c_fid.Vnode, tdcp->c_fid.Unique)); 147538625Srvb 147638625Srvb } 147738625Srvb 147838625Srvb /* Check for link to/from control object. */ 147938625Srvb if (IS_CTL_NAME(tdvp, nm, len) || IS_CTL_VP(vp)) { 148038625Srvb MARK_INT_FAIL(CFS_LINK_STATS); 148138625Srvb return(EACCES); 148238625Srvb } 148338625Srvb 148438625Srvb error = venus_link(vtomi(vp), &cp->c_fid, &tdcp->c_fid, nm, len, cred, p); 148538625Srvb 148638625Srvb /* Invalidate the parent's attr cache, the modification time has changed */ 148738625Srvb VTOC(tdvp)->c_flags &= ~C_VATTR; 148838625Srvb VTOC(vp)->c_flags &= ~C_VATTR; 148938625Srvb 149038625Srvb CFSDEBUG(CFS_LINK, myprintf(("in link result %d\n",error)); ) 149138625Srvb 149238625Srvbexit: 149338625Srvb 149438625Srvb /* Drop the name buffer if we don't need to SAVESTART */ 149538625Srvb if ((cnp->cn_flags & SAVESTART) == 0) { 149638759Srvb zfree(namei_zone, cnp->cn_pnbuf); 149738625Srvb } 149838625Srvb return(error); 149938625Srvb} 150038625Srvb 150138625Srvbint 150238625Srvbcfs_rename(v) 150338625Srvb void *v; 150438625Srvb{ 150538625Srvb/* true args */ 150638625Srvb struct vop_rename_args *ap = v; 150738625Srvb struct vnode *odvp = ap->a_fdvp; 150838625Srvb struct cnode *odcp = VTOC(odvp); 150938625Srvb struct componentname *fcnp = ap->a_fcnp; 151038625Srvb struct vnode *ndvp = ap->a_tdvp; 151138625Srvb struct cnode *ndcp = VTOC(ndvp); 151238625Srvb struct componentname *tcnp = ap->a_tcnp; 151338625Srvb struct ucred *cred = fcnp->cn_cred; 151438625Srvb struct proc *p = fcnp->cn_proc; 151538625Srvb/* true args */ 151638625Srvb int error; 151738625Srvb const char *fnm = fcnp->cn_nameptr; 151838625Srvb int flen = fcnp->cn_namelen; 151938625Srvb const char *tnm = tcnp->cn_nameptr; 152038625Srvb int tlen = tcnp->cn_namelen; 152138625Srvb 152238625Srvb MARK_ENTRY(CFS_RENAME_STATS); 152338625Srvb 152438625Srvb /* Hmmm. The vnodes are already looked up. Perhaps they are locked? 152538625Srvb This could be Bad. XXX */ 152638625Srvb#ifdef DIAGNOSTIC 152738625Srvb if ((fcnp->cn_cred != tcnp->cn_cred) 152838625Srvb || (fcnp->cn_proc != tcnp->cn_proc)) 152938625Srvb { 153038625Srvb panic("cfs_rename: component names don't agree"); 153138625Srvb } 153238625Srvb#endif DIAGNOSTIC 153338625Srvb 153438625Srvb /* Check for rename involving control object. */ 153538625Srvb if (IS_CTL_NAME(odvp, fnm, flen) || IS_CTL_NAME(ndvp, tnm, tlen)) { 153638625Srvb MARK_INT_FAIL(CFS_RENAME_STATS); 153738625Srvb return(EACCES); 153838625Srvb } 153938625Srvb 154038625Srvb /* Problem with moving directories -- need to flush entry for .. */ 154138625Srvb if (odvp != ndvp) { 154238625Srvb struct cnode *ovcp = cfsnc_lookup(VTOC(odvp), fnm, flen, cred); 154338625Srvb if (ovcp) { 154438625Srvb struct vnode *ovp = CTOV(ovcp); 154538625Srvb if ((ovp) && 154638625Srvb (ovp->v_type == VDIR)) /* If it's a directory */ 154738625Srvb cfsnc_zapfile(VTOC(ovp),"..", 2); 154838625Srvb } 154938625Srvb } 155038625Srvb 155138625Srvb /* Remove the entries for both source and target files */ 155238625Srvb cfsnc_zapfile(VTOC(odvp), fnm, flen); 155338625Srvb cfsnc_zapfile(VTOC(ndvp), tnm, tlen); 155438625Srvb 155538625Srvb /* Invalidate the parent's attr cache, the modification time has changed */ 155638625Srvb VTOC(odvp)->c_flags &= ~C_VATTR; 155738625Srvb VTOC(ndvp)->c_flags &= ~C_VATTR; 155838625Srvb 155938625Srvb if (flen+1 > CFS_MAXNAMLEN) { 156038625Srvb MARK_INT_FAIL(CFS_RENAME_STATS); 156138625Srvb error = EINVAL; 156238625Srvb goto exit; 156338625Srvb } 156438625Srvb 156538625Srvb if (tlen+1 > CFS_MAXNAMLEN) { 156638625Srvb MARK_INT_FAIL(CFS_RENAME_STATS); 156738625Srvb error = EINVAL; 156838625Srvb goto exit; 156938625Srvb } 157038625Srvb 157138625Srvb error = venus_rename(vtomi(odvp), &odcp->c_fid, &ndcp->c_fid, fnm, flen, tnm, tlen, cred, p); 157238625Srvb 157338625Srvb exit: 157438625Srvb CFSDEBUG(CFS_RENAME, myprintf(("in rename result %d\n",error));) 157538625Srvb /* XXX - do we need to call cache pureg on the moved vnode? */ 157638625Srvb cache_purge(ap->a_fvp); 157738625Srvb 157838625Srvb /* It seems to be incumbent on us to drop locks on all four vnodes */ 157938625Srvb /* From-vnodes are not locked, only ref'd. To-vnodes are locked. */ 158038625Srvb 158138625Srvb vrele(ap->a_fvp); 158238625Srvb vrele(odvp); 158338625Srvb 158438625Srvb if (ap->a_tvp) { 158538625Srvb if (ap->a_tvp == ndvp) { 158638625Srvb vrele(ap->a_tvp); 158738625Srvb } else { 158838625Srvb vput(ap->a_tvp); 158938625Srvb } 159038625Srvb } 159138625Srvb 159238625Srvb vput(ndvp); 159338625Srvb return(error); 159438625Srvb} 159538625Srvb 159638625Srvbint 159738625Srvbcfs_mkdir(v) 159838625Srvb void *v; 159938625Srvb{ 160038625Srvb/* true args */ 160138625Srvb struct vop_mkdir_args *ap = v; 160238625Srvb struct vnode *dvp = ap->a_dvp; 160338625Srvb struct cnode *dcp = VTOC(dvp); 160438625Srvb struct componentname *cnp = ap->a_cnp; 160538625Srvb register struct vattr *va = ap->a_vap; 160638625Srvb struct vnode **vpp = ap->a_vpp; 160738625Srvb struct ucred *cred = cnp->cn_cred; 160838625Srvb struct proc *p = cnp->cn_proc; 160938625Srvb/* locals */ 161038625Srvb int error; 161138625Srvb const char *nm = cnp->cn_nameptr; 161238625Srvb int len = cnp->cn_namelen; 161338625Srvb struct cnode *cp; 161438625Srvb ViceFid VFid; 161538625Srvb struct vattr ova; 161638625Srvb 161738625Srvb MARK_ENTRY(CFS_MKDIR_STATS); 161838625Srvb 161938625Srvb /* Check for mkdir of target object. */ 162038625Srvb if (IS_CTL_NAME(dvp, nm, len)) { 162138625Srvb *vpp = (struct vnode *)0; 162238625Srvb MARK_INT_FAIL(CFS_MKDIR_STATS); 162338625Srvb return(EACCES); 162438625Srvb } 162538625Srvb 162638625Srvb if (len+1 > CFS_MAXNAMLEN) { 162738625Srvb *vpp = (struct vnode *)0; 162838625Srvb MARK_INT_FAIL(CFS_MKDIR_STATS); 162938625Srvb return(EACCES); 163038625Srvb } 163138625Srvb 163238625Srvb error = venus_mkdir(vtomi(dvp), &dcp->c_fid, nm, len, va, cred, p, &VFid, &ova); 163338625Srvb 163438625Srvb if (!error) { 163538625Srvb if (cfs_find(&VFid) != NULL) 163638625Srvb panic("cnode existed for newly created directory!"); 163738625Srvb 163838625Srvb 163938625Srvb cp = makecfsnode(&VFid, dvp->v_mount, va->va_type); 164038625Srvb *vpp = CTOV(cp); 164138625Srvb 164238625Srvb /* enter the new vnode in the Name Cache */ 164338625Srvb cfsnc_enter(VTOC(dvp), nm, len, cred, VTOC(*vpp)); 164438625Srvb 164538625Srvb /* as a side effect, enter "." and ".." for the directory */ 164638625Srvb cfsnc_enter(VTOC(*vpp), ".", 1, cred, VTOC(*vpp)); 164738625Srvb cfsnc_enter(VTOC(*vpp), "..", 2, cred, VTOC(dvp)); 164838625Srvb 164938625Srvb if (cfs_attr_cache) { 165038625Srvb VTOC(*vpp)->c_vattr = ova; /* update the attr cache */ 165138625Srvb VTOC(*vpp)->c_flags |= C_VATTR; /* Valid attributes in cnode */ 165238625Srvb } 165338625Srvb 165438625Srvb /* Invalidate the parent's attr cache, the modification time has changed */ 165538625Srvb VTOC(dvp)->c_flags &= ~C_VATTR; 165638625Srvb 165738625Srvb CFSDEBUG( CFS_MKDIR, myprintf(("mkdir: (%lx.%lx.%lx) result %d\n", 165838625Srvb VFid.Volume, VFid.Vnode, VFid.Unique, error)); ) 165938625Srvb } else { 166038625Srvb *vpp = (struct vnode *)0; 166138625Srvb CFSDEBUG(CFS_MKDIR, myprintf(("mkdir error %d\n",error));) 166238625Srvb } 166338625Srvb 166438625Srvb /* Have to free the previously saved name */ 166538625Srvb /* 166638625Srvb * ufs_mkdir doesn't check for SAVESTART before freeing the 166738625Srvb * pathname buffer, but ufs_create does. For the moment, I'll 166838625Srvb * follow their lead, but this seems like it is probably 166938625Srvb * incorrect. 167038625Srvb */ 167138759Srvb zfree(namei_zone, cnp->cn_pnbuf); 167238625Srvb return(error); 167338625Srvb} 167438625Srvb 167538625Srvbint 167638625Srvbcfs_rmdir(v) 167738625Srvb void *v; 167838625Srvb{ 167938625Srvb/* true args */ 168038625Srvb struct vop_rmdir_args *ap = v; 168138625Srvb struct vnode *dvp = ap->a_dvp; 168238625Srvb struct cnode *dcp = VTOC(dvp); 168338625Srvb struct componentname *cnp = ap->a_cnp; 168438625Srvb struct ucred *cred = cnp->cn_cred; 168538625Srvb struct proc *p = cnp->cn_proc; 168638625Srvb/* true args */ 168738625Srvb int error; 168838625Srvb const char *nm = cnp->cn_nameptr; 168938625Srvb int len = cnp->cn_namelen; 169038625Srvb struct cnode *cp; 169138625Srvb 169238625Srvb MARK_ENTRY(CFS_RMDIR_STATS); 169338625Srvb 169438625Srvb /* Check for rmdir of control object. */ 169538625Srvb if (IS_CTL_NAME(dvp, nm, len)) { 169638625Srvb MARK_INT_FAIL(CFS_RMDIR_STATS); 169738625Srvb return(ENOENT); 169838625Srvb } 169938625Srvb 170038625Srvb /* We're being conservative here, it might be that this person 170138625Srvb * doesn't really have sufficient access to delete the file 170238625Srvb * but we feel zapping the entry won't really hurt anyone -- dcs 170338625Srvb */ 170438625Srvb /* 170538625Srvb * As a side effect of the rmdir, remove any entries for children of 170638625Srvb * the directory, especially "." and "..". 170738625Srvb */ 170838625Srvb cp = cfsnc_lookup(dcp, nm, len, cred); 170938625Srvb if (cp) cfsnc_zapParentfid(&(cp->c_fid), NOT_DOWNCALL); 171038625Srvb 171138625Srvb /* Remove the file's entry from the CFS Name Cache */ 171238625Srvb cfsnc_zapfile(dcp, nm, len); 171338625Srvb 171438625Srvb /* Invalidate the parent's attr cache, the modification time has changed */ 171538625Srvb dcp->c_flags &= ~C_VATTR; 171638625Srvb 171738625Srvb error = venus_rmdir(vtomi(dvp), &dcp->c_fid, nm, len, cred, p); 171838625Srvb 171938625Srvb CFSDEBUG(CFS_RMDIR, myprintf(("in rmdir result %d\n", error)); ) 172038625Srvb 172138625Srvb if ((cnp->cn_flags & SAVESTART) == 0) { 172238759Srvb zfree(namei_zone, cnp->cn_pnbuf); 172338625Srvb } 172438625Srvb return(error); 172538625Srvb} 172638625Srvb 172738625Srvbint 172838625Srvbcfs_symlink(v) 172938625Srvb void *v; 173038625Srvb{ 173138625Srvb/* true args */ 173238625Srvb struct vop_symlink_args *ap = v; 173338625Srvb struct vnode *tdvp = ap->a_dvp; 173438625Srvb struct cnode *tdcp = VTOC(tdvp); 173538625Srvb struct componentname *cnp = ap->a_cnp; 173638625Srvb struct vattr *tva = ap->a_vap; 173738625Srvb char *path = ap->a_target; 173838625Srvb struct ucred *cred = cnp->cn_cred; 173938625Srvb struct proc *p = cnp->cn_proc; 174038625Srvb/* locals */ 174138625Srvb int error; 174238625Srvb /* 174338625Srvb * XXX I'm assuming the following things about cfs_symlink's 174438625Srvb * arguments: 174538625Srvb * t(foo) is the new name/parent/etc being created. 174638625Srvb * lname is the contents of the new symlink. 174738625Srvb */ 174838759Srvb char *nm = cnp->cn_nameptr; 174938625Srvb int len = cnp->cn_namelen; 175038625Srvb int plen = strlen(path); 175138625Srvb 175238625Srvb /* XXX What about the vpp argument? Do we need it? */ 175338625Srvb /* 175438625Srvb * Here's the strategy for the moment: perform the symlink, then 175538625Srvb * do a lookup to grab the resulting vnode. I know this requires 175638625Srvb * two communications with Venus for a new sybolic link, but 175738625Srvb * that's the way the ball bounces. I don't yet want to change 175838625Srvb * the way the Mach symlink works. When Mach support is 175938625Srvb * deprecated, we should change symlink so that the common case 176038625Srvb * returns the resultant vnode in a vpp argument. 176138625Srvb */ 176238625Srvb 176338625Srvb MARK_ENTRY(CFS_SYMLINK_STATS); 176438625Srvb 176538625Srvb /* Check for symlink of control object. */ 176638625Srvb if (IS_CTL_NAME(tdvp, nm, len)) { 176738625Srvb MARK_INT_FAIL(CFS_SYMLINK_STATS); 176838625Srvb return(EACCES); 176938625Srvb } 177038625Srvb 177138625Srvb if (plen+1 > CFS_MAXPATHLEN) { 177238625Srvb MARK_INT_FAIL(CFS_SYMLINK_STATS); 177338625Srvb return(EINVAL); 177438625Srvb } 177538625Srvb 177638625Srvb if (len+1 > CFS_MAXNAMLEN) { 177738625Srvb MARK_INT_FAIL(CFS_SYMLINK_STATS); 177838625Srvb error = EINVAL; 177938625Srvb goto exit; 178038625Srvb } 178138625Srvb 178238625Srvb error = venus_symlink(vtomi(tdvp), &tdcp->c_fid, path, plen, nm, len, tva, cred, p); 178338625Srvb 178438625Srvb /* Invalidate the parent's attr cache, the modification time has changed */ 178538625Srvb tdcp->c_flags &= ~C_VATTR; 178638625Srvb 178738625Srvb /* 178838625Srvb * Free the name buffer 178938625Srvb */ 179038625Srvb if ((cnp->cn_flags & SAVESTART) == 0) { 179138759Srvb zfree(namei_zone, cnp->cn_pnbuf); 179238625Srvb } 179338625Srvb 179438625Srvb exit: 179538625Srvb CFSDEBUG(CFS_SYMLINK, myprintf(("in symlink result %d\n",error)); ) 179638625Srvb return(error); 179738625Srvb} 179838625Srvb 179938625Srvb/* 180038625Srvb * Read directory entries. 180138625Srvb */ 180238625Srvbint 180338625Srvbcfs_readdir(v) 180438625Srvb void *v; 180538625Srvb{ 180638625Srvb/* true args */ 180738625Srvb struct vop_readdir_args *ap = v; 180838625Srvb struct vnode *vp = ap->a_vp; 180938625Srvb struct cnode *cp = VTOC(vp); 181038625Srvb register struct uio *uiop = ap->a_uio; 181138625Srvb struct ucred *cred = ap->a_cred; 181238625Srvb int *eofflag = ap->a_eofflag; 181338625Srvb u_long **cookies = ap->a_cookies; 181438625Srvb int *ncookies = ap->a_ncookies; 181538625Srvb struct proc *p = ap->a_uio->uio_procp; 181638625Srvb/* upcall decl */ 181738625Srvb/* locals */ 181838625Srvb int error = 0; 181938625Srvb 182038625Srvb MARK_ENTRY(CFS_READDIR_STATS); 182138625Srvb 182238625Srvb CFSDEBUG(CFS_READDIR, myprintf(("cfs_readdir(%p, %d, %qd, %d)\n", uiop->uio_iov->iov_base, uiop->uio_resid, uiop->uio_offset, uiop->uio_segflg)); ) 182338625Srvb 182438625Srvb /* Check for readdir of control object. */ 182538625Srvb if (IS_CTL_VP(vp)) { 182638625Srvb MARK_INT_FAIL(CFS_READDIR_STATS); 182738625Srvb return(ENOENT); 182838625Srvb } 182938625Srvb 183038759Srvb { 183138625Srvb /* If directory is not already open do an "internal open" on it. */ 183238625Srvb int opened_internally = 0; 183338625Srvb if (cp->c_ovp == NULL) { 183438625Srvb opened_internally = 1; 183538625Srvb MARK_INT_GEN(CFS_OPEN_STATS); 183638625Srvb error = VOP_OPEN(vp, FREAD, cred, p); 183738625Srvbprintf("cfs_readdir: Internally Opening %p\n", vp); 183838625Srvb if (error) { 183938625Srvb printf("cfs_readdir: VOP_OPEN on container failed %d\n", error); 184038625Srvb return (error); 184138625Srvb } 184238625Srvb if (vp->v_type == VREG) { 184338625Srvb error = vfs_object_create(vp, p, cred, 1); 184438625Srvb if (error != 0) { 184538625Srvb printf("cfs_readdir: vfs_object_create() returns %d\n", error); 184638625Srvb vput(vp); 184738625Srvb } 184838625Srvb } 184938625Srvb if (error) return(error); 185038625Srvb } 185138625Srvb 185238625Srvb /* Have UFS handle the call. */ 185338625Srvb CFSDEBUG(CFS_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)); ) 185438625Srvb error = VOP_READDIR(cp->c_ovp, uiop, cred, eofflag, ncookies, 185538625Srvb cookies); 185638625Srvb 185738625Srvb if (error) 185838625Srvb MARK_INT_FAIL(CFS_READDIR_STATS); 185938625Srvb else 186038625Srvb MARK_INT_SAT(CFS_READDIR_STATS); 186138625Srvb 186238625Srvb /* Do an "internal close" if necessary. */ 186338625Srvb if (opened_internally) { 186438625Srvb MARK_INT_GEN(CFS_CLOSE_STATS); 186538625Srvb (void)VOP_CLOSE(vp, FREAD, cred, p); 186638625Srvb } 186738625Srvb } 186838625Srvb 186938625Srvb return(error); 187038625Srvb} 187138625Srvb 187238625Srvb/* 187338625Srvb * Convert from file system blocks to device blocks 187438625Srvb */ 187538625Srvbint 187638625Srvbcfs_bmap(v) 187738625Srvb void *v; 187838625Srvb{ 187938625Srvb /* XXX on the global proc */ 188038625Srvb/* true args */ 188138625Srvb struct vop_bmap_args *ap = v; 188238625Srvb struct vnode *vp __attribute__((unused)) = ap->a_vp; /* file's vnode */ 188338625Srvb daddr_t bn __attribute__((unused)) = ap->a_bn; /* fs block number */ 188438625Srvb struct vnode **vpp = ap->a_vpp; /* RETURN vp of device */ 188538625Srvb daddr_t *bnp __attribute__((unused)) = ap->a_bnp; /* RETURN device block number */ 188638625Srvb struct proc *p __attribute__((unused)) = curproc; 188738625Srvb/* upcall decl */ 188838625Srvb/* locals */ 188938625Srvb 189038625Srvb int ret = 0; 189138625Srvb struct cnode *cp; 189238625Srvb 189338625Srvb cp = VTOC(vp); 189438625Srvb if (cp->c_ovp) { 189538625Srvb printf("cfs_bmap: container .. "); 189638625Srvb ret = VOP_BMAP(cp->c_ovp, bn, vpp, bnp, ap->a_runp, ap->a_runb); 189738625Srvb printf("VOP_BMAP(cp->c_ovp %p, bn %p, vpp %p, bnp %p, ap->a_runp %p, ap->a_runb %p) = %d\n", 189838625Srvb cp->c_ovp, bn, vpp, bnp, ap->a_runp, ap->a_runb, ret); 189938625Srvb return ret; 190038625Srvb } else { 190138625Srvb printf("cfs_bmap: no container\n"); 190238625Srvb return(EOPNOTSUPP); 190338625Srvb } 190438625Srvb} 190538625Srvb 190638625Srvb/* 190738625Srvb * I don't think the following two things are used anywhere, so I've 190838625Srvb * commented them out 190938625Srvb * 191038625Srvb * struct buf *async_bufhead; 191138625Srvb * int async_daemon_count; 191238625Srvb */ 191338625Srvbint 191438625Srvbcfs_strategy(v) 191538625Srvb void *v; 191638625Srvb{ 191738625Srvb/* true args */ 191838625Srvb struct vop_strategy_args *ap = v; 191938625Srvb register struct buf *bp __attribute__((unused)) = ap->a_bp; 192038625Srvb struct proc *p __attribute__((unused)) = curproc; 192138625Srvb/* upcall decl */ 192238625Srvb/* locals */ 192338625Srvb 192438625Srvb printf("cfs_strategy: called ???\n"); 192538625Srvb return(EOPNOTSUPP); 192638625Srvb} 192738625Srvb 192838625Srvbint 192938625Srvbcfs_reclaim(v) 193038625Srvb void *v; 193138625Srvb{ 193238625Srvb/* true args */ 193338625Srvb struct vop_reclaim_args *ap = v; 193438625Srvb struct vnode *vp = ap->a_vp; 193538625Srvb struct cnode *cp = VTOC(vp); 193638625Srvb/* upcall decl */ 193738625Srvb/* locals */ 193838625Srvb 193938625Srvb/* 194038625Srvb * Forced unmount/flush will let vnodes with non zero use be destroyed! 194138625Srvb */ 194238625Srvb ENTRY; 194338625Srvb 194438625Srvb if (IS_UNMOUNTING(cp)) { 194538625Srvb#ifdef DEBUG 194638625Srvb if (VTOC(vp)->c_ovp) { 194738625Srvb if (IS_UNMOUNTING(cp)) 194838625Srvb printf("cfs_reclaim: c_ovp not void: vp %p, cp %p\n", vp, cp); 194938625Srvb } 195038625Srvb#endif 195138625Srvb } else { 195238625Srvb#ifdef DIAGNOSTIC 195338625Srvb if (vp->v_usecount != 0) 195438625Srvb vprint("cfs_reclaim: pushing active", vp); 195538625Srvb if (VTOC(vp)->c_ovp) { 195638625Srvb panic("cfs_reclaim: c_ovp not void"); 195738625Srvb } 195838625Srvb#endif DIAGNOSTIC 195938625Srvb } 196038625Srvb cache_purge(vp); 196138625Srvb cfs_free(VTOC(vp)); 196238625Srvb VTOC(vp) = NULL; 196338625Srvb return (0); 196438625Srvb} 196538625Srvb 196638625Srvbint 196738625Srvbcfs_lock(v) 196838625Srvb void *v; 196938625Srvb{ 197038625Srvb/* true args */ 197138625Srvb struct vop_lock_args *ap = v; 197238625Srvb struct vnode *vp = ap->a_vp; 197338625Srvb struct cnode *cp = VTOC(vp); 197438625Srvb struct proc *p = ap->a_p; 197538625Srvb/* upcall decl */ 197638625Srvb/* locals */ 197738625Srvb 197838625Srvb ENTRY; 197938625Srvb 198038625Srvb if (cfs_lockdebug) { 198138625Srvb myprintf(("Attempting lock on %lx.%lx.%lx\n", 198238625Srvb cp->c_fid.Volume, cp->c_fid.Vnode, cp->c_fid.Unique)); 198338625Srvb } 198438625Srvb 198538759Srvb return (lockmgr(&cp->c_lock, ap->a_flags, &vp->v_interlock, p)); 198638625Srvb} 198738625Srvb 198838625Srvbint 198938625Srvbcfs_unlock(v) 199038625Srvb void *v; 199138625Srvb{ 199238625Srvb/* true args */ 199338625Srvb struct vop_unlock_args *ap = v; 199438625Srvb struct vnode *vp = ap->a_vp; 199538625Srvb struct cnode *cp = VTOC(vp); 199638625Srvb struct proc *p = ap->a_p; 199738625Srvb/* upcall decl */ 199838625Srvb/* locals */ 199938625Srvb 200038625Srvb ENTRY; 200138625Srvb if (cfs_lockdebug) { 200238625Srvb myprintf(("Attempting unlock on %lx.%lx.%lx\n", 200338625Srvb cp->c_fid.Volume, cp->c_fid.Vnode, cp->c_fid.Unique)); 200438625Srvb } 200538625Srvb 200638759Srvb return (lockmgr(&cp->c_lock, ap->a_flags | LK_RELEASE, &vp->v_interlock, p)); 200738625Srvb} 200838625Srvb 200938625Srvbint 201038625Srvbcfs_islocked(v) 201138625Srvb void *v; 201238625Srvb{ 201338625Srvb/* true args */ 201438625Srvb struct vop_islocked_args *ap = v; 201538625Srvb struct cnode *cp = VTOC(ap->a_vp); 201638625Srvb ENTRY; 201738625Srvb 201838625Srvb return (lockstatus(&cp->c_lock)); 201938625Srvb} 202038625Srvb 202138625Srvb/* How one looks up a vnode given a device/inode pair: */ 202238625Srvbint 202338625Srvbcfs_grab_vnode(dev_t dev, ino_t ino, struct vnode **vpp) 202438625Srvb{ 202538625Srvb /* This is like VFS_VGET() or igetinode()! */ 202638625Srvb int error; 202738625Srvb struct mount *mp; 202838625Srvb 202938625Srvb if (!(mp = devtomp(dev))) { 203038625Srvb myprintf(("cfs_grab_vnode: devtomp(%d) returns NULL\n", dev)); 203138625Srvb return(ENXIO); 203238625Srvb } 203338625Srvb 203438625Srvb /* XXX - ensure that nonzero-return means failure */ 203538625Srvb error = VFS_VGET(mp,ino,vpp); 203638625Srvb if (error) { 203738625Srvb myprintf(("cfs_grab_vnode: iget/vget(%d, %d) returns %p, err %d\n", 203838625Srvb dev, ino, *vpp, error)); 203938625Srvb return(ENOENT); 204038625Srvb } 204138625Srvb return(0); 204238625Srvb} 204338625Srvb 204438625Srvbvoid 204538625Srvbprint_vattr( attr ) 204638625Srvb struct vattr *attr; 204738625Srvb{ 204838625Srvb char *typestr; 204938625Srvb 205038625Srvb switch (attr->va_type) { 205138625Srvb case VNON: 205238625Srvb typestr = "VNON"; 205338625Srvb break; 205438625Srvb case VREG: 205538625Srvb typestr = "VREG"; 205638625Srvb break; 205738625Srvb case VDIR: 205838625Srvb typestr = "VDIR"; 205938625Srvb break; 206038625Srvb case VBLK: 206138625Srvb typestr = "VBLK"; 206238625Srvb break; 206338625Srvb case VCHR: 206438625Srvb typestr = "VCHR"; 206538625Srvb break; 206638625Srvb case VLNK: 206738625Srvb typestr = "VLNK"; 206838625Srvb break; 206938625Srvb case VSOCK: 207038625Srvb typestr = "VSCK"; 207138625Srvb break; 207238625Srvb case VFIFO: 207338625Srvb typestr = "VFFO"; 207438625Srvb break; 207538625Srvb case VBAD: 207638625Srvb typestr = "VBAD"; 207738625Srvb break; 207838625Srvb default: 207938625Srvb typestr = "????"; 208038625Srvb break; 208138625Srvb } 208238625Srvb 208338625Srvb 208438625Srvb myprintf(("attr: type %s mode %d uid %d gid %d fsid %d rdev %d\n", 208538625Srvb typestr, (int)attr->va_mode, (int)attr->va_uid, 208638625Srvb (int)attr->va_gid, (int)attr->va_fsid, (int)attr->va_rdev)); 208738625Srvb 208838625Srvb myprintf((" fileid %d nlink %d size %d blocksize %d bytes %d\n", 208938625Srvb (int)attr->va_fileid, (int)attr->va_nlink, 209038625Srvb (int)attr->va_size, 209138625Srvb (int)attr->va_blocksize,(int)attr->va_bytes)); 209238625Srvb myprintf((" gen %ld flags %ld vaflags %d\n", 209338625Srvb attr->va_gen, attr->va_flags, attr->va_vaflags)); 209438625Srvb myprintf((" atime sec %d nsec %d\n", 209538625Srvb (int)attr->va_atime.tv_sec, (int)attr->va_atime.tv_nsec)); 209638625Srvb myprintf((" mtime sec %d nsec %d\n", 209738625Srvb (int)attr->va_mtime.tv_sec, (int)attr->va_mtime.tv_nsec)); 209838625Srvb myprintf((" ctime sec %d nsec %d\n", 209938625Srvb (int)attr->va_ctime.tv_sec, (int)attr->va_ctime.tv_nsec)); 210038625Srvb} 210138625Srvb 210238625Srvb/* How to print a ucred */ 210338625Srvbvoid 210438625Srvbprint_cred(cred) 210538625Srvb struct ucred *cred; 210638625Srvb{ 210738625Srvb 210838625Srvb int i; 210938625Srvb 211038625Srvb myprintf(("ref %d\tuid %d\n",cred->cr_ref,cred->cr_uid)); 211138625Srvb 211238625Srvb for (i=0; i < cred->cr_ngroups; i++) 211338625Srvb myprintf(("\tgroup %d: (%d)\n",i,cred->cr_groups[i])); 211438625Srvb myprintf(("\n")); 211538625Srvb 211638625Srvb} 211738625Srvb 211838625Srvb/* 211938625Srvb * Return a vnode for the given fid. 212038625Srvb * If no cnode exists for this fid create one and put it 212138625Srvb * in a table hashed by fid.Volume and fid.Vnode. If the cnode for 212238625Srvb * this fid is already in the table return it (ref count is 212338625Srvb * incremented by cfs_find. The cnode will be flushed from the 212438625Srvb * table when cfs_inactive calls cfs_unsave. 212538625Srvb */ 212638625Srvbstruct cnode * 212738625Srvbmakecfsnode(fid, vfsp, type) 212838625Srvb ViceFid *fid; struct mount *vfsp; short type; 212938625Srvb{ 213038625Srvb struct cnode *cp; 213138625Srvb int err; 213238625Srvb 213338625Srvb if ((cp = cfs_find(fid)) == NULL) { 213438625Srvb struct vnode *vp; 213538625Srvb 213638625Srvb cp = cfs_alloc(); 213738625Srvb lockinit(&cp->c_lock, PINOD, "cnode", 0, 0); 213838625Srvb cp->c_fid = *fid; 213938625Srvb 214038625Srvb err = getnewvnode(VT_CFS, vfsp, cfs_vnodeop_p, &vp); 214138625Srvb if (err) { 214238625Srvb panic("cfs: getnewvnode returned error %d\n", err); 214338625Srvb } 214438625Srvb vp->v_data = cp; 214538625Srvb vp->v_type = type; 214638625Srvb cp->c_vnode = vp; 214738625Srvb cfs_save(cp); 214838625Srvb 214938625Srvb } else { 215038625Srvb vref(CTOV(cp)); 215138625Srvb } 215238625Srvb 215338625Srvb return cp; 215438625Srvb} 2155