coda_vnops.c revision 43382
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 $ 3043382Sbde * $Id: coda_vnops.c,v 1.14 1999/01/27 20:09:17 dillon Exp $ 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 5039126Srvb * $Log: coda_vnops.c,v $ 5143382Sbde * Revision 1.14 1999/01/27 20:09:17 dillon 5243382Sbde * Fix warnings preparing for -Wall -Wcast-qual 5343382Sbde * 5443382Sbde * Also disable one usb module in LINT due to fatal compilation errors, 5543382Sbde * temporary. 5643382Sbde * 5743295Sdillon * Revision 1.13 1999/01/20 14:49:05 eivind 5843295Sdillon * Add 'options DEBUG_LOCKS', which stores extra information in struct 5943295Sdillon * lock, and add some macros and function parameters to make sure that 6043295Sdillon * the information get to the point where it can be put in the lock 6143295Sdillon * structure. 6243295Sdillon * 6343295Sdillon * While I'm here, add DEBUG_VFS_LOCKS to LINT. 6443295Sdillon * 6542900Seivind * Revision 1.12 1999/01/07 16:14:12 bde 6642900Seivind * Don't pass unused unused timestamp args to UFS_UPDATE() or waste 6742900Seivind * time initializing them. This almost finishes centralizing (in-core) 6842900Seivind * timestamp updates in ufs_itimes(). 6942900Seivind * 7042374Sbde * Revision 1.11 1999/01/05 18:49:51 eivind 7142374Sbde * Remove the 'waslocked' parameter to vfs_object_create(). 7242374Sbde * 7342315Seivind * Revision 1.10 1998/12/04 18:44:21 rvb 7442315Seivind * Don't print diagnostic anymore 7542315Seivind * 7641504Srvb * Revision 1.9 1998/11/16 19:48:26 rvb 7741504Srvb * A few bug fixes for Robert Watson 7841504Srvb * 7941202Srvb * Revision 1.8 1998/10/28 20:31:13 rvb 8041202Srvb * Change the way unmounting happens to guarantee that the 8141202Srvb * client programs are allowed to finish up (coda_call is 8241202Srvb * forced to complete) and release their locks. Thus there 8341202Srvb * is a reasonable chance that the vflush implicit in the 8441202Srvb * unmount will not get hung on held locks. 8541202Srvb * 8640708Srvb * Revision 1.7 1998/10/25 17:44:41 phk 8740708Srvb * Nitpicking and dusting performed on a train. Removes trivial warnings 8840708Srvb * about unused variables, labels and other lint. 8940708Srvb * 9040648Sphk * Revision 1.6 1998/09/28 20:52:58 rvb 9140648Sphk * Cleanup and fix THE bug 9240648Sphk * 9339728Srvb * Revision 1.5 1998/09/25 17:38:32 rvb 9439728Srvb * Put "stray" printouts under DIAGNOSTIC. Make everything build 9539728Srvb * with DEBUG on. Add support for lkm. (The macro's don't work 9639728Srvb * for me; for a good chuckle look at the end of coda_fbsd.c.) 9739728Srvb * 9839650Srvb * Revision 1.4 1998/09/13 13:57:59 rvb 9939650Srvb * Finish conversion of cfs -> coda 10039650Srvb * 10139126Srvb * Revision 1.3 1998/09/11 18:50:17 rvb 10239126Srvb * All the references to cfs, in symbols, structs, and strings 10339126Srvb * have been changed to coda. (Same for CFS.) 10439126Srvb * 10539085Srvb * Revision 1.2 1998/09/02 19:09:53 rvb 10639085Srvb * Pass2 complete 10739085Srvb * 10838759Srvb * Revision 1.1.1.1 1998/08/29 21:14:52 rvb 10938759Srvb * Very Preliminary Coda 11038759Srvb * 11138625Srvb * Revision 1.12 1998/08/28 18:28:00 rvb 11238625Srvb * NetBSD -current is stricter! 11338625Srvb * 11438625Srvb * Revision 1.11 1998/08/28 18:12:23 rvb 11538625Srvb * Now it also works on FreeBSD -current. This code will be 11638625Srvb * committed to the FreeBSD -current and NetBSD -current 11738625Srvb * trees. It will then be tailored to the particular platform 11838625Srvb * by flushing conditional code. 11938625Srvb * 12038625Srvb * Revision 1.10 1998/08/18 17:05:21 rvb 12138625Srvb * Don't use __RCSID now 12238625Srvb * 12338625Srvb * Revision 1.9 1998/08/18 16:31:46 rvb 12438625Srvb * Sync the code for NetBSD -current; test on 1.3 later 12538625Srvb * 12638625Srvb * Revision 1.8 98/02/24 22:22:50 rvb 12738625Srvb * Fixes up mainly to flush iopen and friends 12838625Srvb * 12938625Srvb * Revision 1.7 98/01/31 20:53:15 rvb 13038625Srvb * First version that works on FreeBSD 2.2.5 13138625Srvb * 13238625Srvb * Revision 1.6 98/01/23 11:53:47 rvb 13339085Srvb * Bring RVB_CODA1_1 to HEAD 13438625Srvb * 13538625Srvb * Revision 1.5.2.8 98/01/23 11:21:11 rvb 13638625Srvb * Sync with 2.2.5 13738625Srvb * 13838625Srvb * Revision 1.5.2.7 97/12/19 14:26:08 rvb 13938625Srvb * session id 14038625Srvb * 14138625Srvb * Revision 1.5.2.6 97/12/16 22:01:34 rvb 14238625Srvb * Oops add cfs_subr.h cfs_venus.h; sync with peter 14338625Srvb * 14438625Srvb * Revision 1.5.2.5 97/12/16 12:40:14 rvb 14538625Srvb * Sync with 1.3 14638625Srvb * 14738625Srvb * Revision 1.5.2.4 97/12/10 14:08:31 rvb 14839085Srvb * Fix O_ flags; check result in coda_call 14938625Srvb * 15038625Srvb * Revision 1.5.2.3 97/12/10 11:40:27 rvb 15138625Srvb * No more ody 15238625Srvb * 15338625Srvb * Revision 1.5.2.2 97/12/09 16:07:15 rvb 15438625Srvb * Sync with vfs/include/coda.h 15538625Srvb * 15638625Srvb * Revision 1.5.2.1 97/12/06 17:41:25 rvb 15738625Srvb * Sync with peters coda.h 15838625Srvb * 15938625Srvb * Revision 1.5 97/12/05 10:39:23 rvb 16038625Srvb * Read CHANGES 16138625Srvb * 16238625Srvb * Revision 1.4.14.10 97/11/25 08:08:48 rvb 16338625Srvb * cfs_venus ... done; until cred/vattr change 16438625Srvb * 16538625Srvb * Revision 1.4.14.9 97/11/24 15:44:48 rvb 16638625Srvb * Final cfs_venus.c w/o macros, but one locking bug 16738625Srvb * 16838625Srvb * Revision 1.4.14.8 97/11/21 11:28:04 rvb 16938625Srvb * cfs_venus.c is done: first pass 17038625Srvb * 17138625Srvb * Revision 1.4.14.7 97/11/20 11:46:51 rvb 17238625Srvb * Capture current cfs_venus 17338625Srvb * 17438625Srvb * Revision 1.4.14.6 97/11/18 10:27:19 rvb 17538625Srvb * cfs_nbsd.c is DEAD!!!; integrated into cfs_vf/vnops.c 17638625Srvb * cfs_nb_foo and cfs_foo are joined 17738625Srvb * 17838625Srvb * Revision 1.4.14.5 97/11/13 22:03:03 rvb 17938625Srvb * pass2 cfs_NetBSD.h mt 18038625Srvb * 18138625Srvb * Revision 1.4.14.4 97/11/12 12:09:42 rvb 18238625Srvb * reorg pass1 18338625Srvb * 18438625Srvb * Revision 1.4.14.3 97/11/06 21:03:28 rvb 18538625Srvb * don't include headers in headers 18638625Srvb * 18738625Srvb * Revision 1.4.14.2 97/10/29 16:06:30 rvb 18838625Srvb * Kill DYING 18938625Srvb * 19038625Srvb * Revision 1.4.14.1 1997/10/28 23:10:18 rvb 19138625Srvb * >64Meg; venus can be killed! 19238625Srvb * 19338625Srvb * Revision 1.4 1997/02/20 13:54:50 lily 19439085Srvb * check for NULL return from coda_nc_lookup before CTOV 19538625Srvb * 19638625Srvb * Revision 1.3 1996/12/12 22:11:02 bnoble 19738625Srvb * Fixed the "downcall invokes venus operation" deadlock in all known cases. 19838625Srvb * There may be more 19938625Srvb * 20038625Srvb * Revision 1.2 1996/01/02 16:57:07 bnoble 20138625Srvb * Added support for Coda MiniCache and raw inode calls (final commit) 20238625Srvb * 20338625Srvb * Revision 1.1.2.1 1995/12/20 01:57:34 bnoble 20439085Srvb * Added CODA-specific files 20538625Srvb * 20638625Srvb * Revision 3.1.1.1 1995/03/04 19:08:06 bnoble 20738625Srvb * Branch for NetBSD port revisions 20838625Srvb * 20938625Srvb * Revision 3.1 1995/03/04 19:08:04 bnoble 21038625Srvb * Bump to major revision 3 to prepare for NetBSD port 21138625Srvb * 21238625Srvb * Revision 2.6 1995/02/17 16:25:26 dcs 21338625Srvb * These versions represent several changes: 21438625Srvb * 1. Allow venus to restart even if outstanding references exist. 21538625Srvb * 2. Have only one ctlvp per client, as opposed to one per mounted cfs device.d 21638625Srvb * 3. Allow ody_expand to return many members, not just one. 21738625Srvb * 21838625Srvb * Revision 2.5 94/11/09 20:29:27 dcs 21938625Srvb * Small bug in remove dealing with hard links and link counts was fixed. 22038625Srvb * 22138625Srvb * Revision 2.4 94/10/14 09:58:42 dcs 22238625Srvb * Made changes 'cause sun4s have braindead compilers 22338625Srvb * 22438625Srvb * Revision 2.3 94/10/12 16:46:37 dcs 22538625Srvb * Cleaned kernel/venus interface by removing XDR junk, plus 22638625Srvb * so cleanup to allow this code to be more easily ported. 22738625Srvb * 22838625Srvb * Revision 2.2 94/09/20 14:12:41 dcs 22938625Srvb * Fixed bug in rename when moving a directory. 23038625Srvb * 23138625Srvb * Revision 2.1 94/07/21 16:25:22 satya 23238625Srvb * Conversion to C++ 3.0; start of Coda Release 2.0 23338625Srvb * 23438625Srvb * Revision 1.4 93/12/17 01:38:01 luqi 23538625Srvb * Changes made for kernel to pass process info to Venus: 23638625Srvb * 23738625Srvb * (1) in file cfs.h 23838625Srvb * add process id and process group id in most of the cfs argument types. 23938625Srvb * 24038625Srvb * (2) in file cfs_vnodeops.c 24138625Srvb * add process info passing in most of the cfs vnode operations. 24238625Srvb * 24338625Srvb * (3) in file cfs_xdr.c 24438625Srvb * expand xdr routines according changes in (1). 24538625Srvb * add variable pass_process_info to allow venus for kernel version checking. 24638625Srvb * 24738625Srvb * Revision 1.3 93/05/28 16:24:33 bnoble 24838625Srvb * *** empty log message *** 24938625Srvb * 25038625Srvb * Revision 1.2 92/10/27 17:58:25 lily 25138625Srvb * merge kernel/latest and alpha/src/cfs 25238625Srvb * 25338625Srvb * Revision 2.4 92/09/30 14:16:37 mja 25438625Srvb * Redid buffer allocation so that it does kmem_{alloc,free} for all 25538625Srvb * architectures. Zone allocation, previously used on the 386, caused 25638625Srvb * panics if it was invoked repeatedly. Stack allocation, previously 25738625Srvb * used on all other architectures, tickled some Mach bug that appeared 25838625Srvb * with large stack frames. 25938625Srvb * [91/02/09 jjk] 26038625Srvb * 26138625Srvb * Added contributors blurb. 26238625Srvb * [90/12/13 jjk] 26338625Srvb * 26438625Srvb * Revision 2.3 90/07/26 15:50:09 mrt 26538625Srvb * Fixed fix to rename to remove .. from moved directories. 26638625Srvb * [90/06/28 dcs] 26738625Srvb * 26838625Srvb * Revision 1.7 90/06/28 16:24:25 dcs 26938625Srvb * Fixed bug with moving directories, we weren't flushing .. for the moved directory. 27038625Srvb * 27138625Srvb * Revision 1.6 90/05/31 17:01:47 dcs 27238625Srvb * Prepare for merge with facilities kernel. 27338625Srvb * 27438625Srvb * 27538625Srvb */ 27638625Srvb 27738625Srvb#include <sys/param.h> 27838625Srvb#include <sys/systm.h> 27938759Srvb#include <sys/kernel.h> 28038759Srvb#include <sys/proc.h> 28138625Srvb#include <sys/malloc.h> 28238759Srvb#include <sys/mount.h> 28338625Srvb#include <sys/errno.h> 28438625Srvb#include <sys/acct.h> 28538625Srvb#include <sys/file.h> 28638759Srvb#include <sys/fcntl.h> 28738625Srvb#include <sys/uio.h> 28838625Srvb#include <sys/namei.h> 28938625Srvb#include <sys/ioccom.h> 29038625Srvb#include <sys/select.h> 29138759Srvb 29238625Srvb#include <vm/vm.h> 29338625Srvb#include <vm/vm_object.h> 29438625Srvb#include <vm/vm_extern.h> 29538759Srvb#include <vm/vm_zone.h> 29638625Srvb 29739126Srvb#include <coda/coda.h> 29839126Srvb#include <coda/cnode.h> 29939126Srvb#include <coda/coda_vnops.h> 30039126Srvb#include <coda/coda_venus.h> 30139126Srvb#include <coda/coda_opstats.h> 30239126Srvb#include <coda/coda_subr.h> 30339126Srvb#include <coda/coda_namecache.h> 30439126Srvb#include <coda/coda_pioctl.h> 30538625Srvb 30638625Srvb/* 30738625Srvb * These flags select various performance enhancements. 30838625Srvb */ 30939085Srvbint coda_attr_cache = 1; /* Set to cache attributes in the kernel */ 31039085Srvbint coda_symlink_cache = 1; /* Set to cache symbolic link information */ 31139085Srvbint coda_access_cache = 1; /* Set to handle some access checks directly */ 31238625Srvb 31338625Srvb/* structure to keep track of vfs calls */ 31438625Srvb 31539085Srvbstruct coda_op_stats coda_vnodeopstats[CODA_VNODEOPS_SIZE]; 31638625Srvb 31739085Srvb#define MARK_ENTRY(op) (coda_vnodeopstats[op].entries++) 31839085Srvb#define MARK_INT_SAT(op) (coda_vnodeopstats[op].sat_intrn++) 31939085Srvb#define MARK_INT_FAIL(op) (coda_vnodeopstats[op].unsat_intrn++) 32039085Srvb#define MARK_INT_GEN(op) (coda_vnodeopstats[op].gen_intrn++) 32138625Srvb 32238625Srvb/* What we are delaying for in printf */ 32339085Srvbint coda_printf_delay = 0; /* in microseconds */ 32439085Srvbint coda_vnop_print_entry = 0; 32539085Srvbstatic int coda_lockdebug = 0; 32638625Srvb 32738625Srvb/* Definition of the vfs operation vector */ 32838625Srvb 32938625Srvb/* 33038625Srvb * Some NetBSD details: 33138625Srvb * 33239085Srvb * coda_start is called at the end of the mount syscall. 33339085Srvb * coda_init is called at boot time. 33438625Srvb */ 33538625Srvb 33639085Srvb#define ENTRY if(coda_vnop_print_entry) myprintf(("Entered %s\n",__FUNCTION__)) 33738625Srvb 33838625Srvb/* Definition of the vnode operation vector */ 33938625Srvb 34039085Srvbstruct vnodeopv_entry_desc coda_vnodeop_entries[] = { 34139085Srvb { &vop_default_desc, coda_vop_error }, 34239085Srvb { &vop_lookup_desc, coda_lookup }, /* lookup */ 34339085Srvb { &vop_create_desc, coda_create }, /* create */ 34439650Srvb { &vop_mknod_desc, coda_vop_error }, /* mknod */ 34539085Srvb { &vop_open_desc, coda_open }, /* open */ 34639085Srvb { &vop_close_desc, coda_close }, /* close */ 34739085Srvb { &vop_access_desc, coda_access }, /* access */ 34839650Srvb { &vop_getattr_desc, coda_getattr }, /* getattr */ 34939650Srvb { &vop_setattr_desc, coda_setattr }, /* setattr */ 35039085Srvb { &vop_read_desc, coda_read }, /* read */ 35139085Srvb { &vop_write_desc, coda_write }, /* write */ 35239085Srvb { &vop_ioctl_desc, coda_ioctl }, /* ioctl */ 35339650Srvb { &vop_mmap_desc, coda_vop_error }, /* mmap */ 35439085Srvb { &vop_fsync_desc, coda_fsync }, /* fsync */ 35539085Srvb { &vop_remove_desc, coda_remove }, /* remove */ 35639085Srvb { &vop_link_desc, coda_link }, /* link */ 35739085Srvb { &vop_rename_desc, coda_rename }, /* rename */ 35839085Srvb { &vop_mkdir_desc, coda_mkdir }, /* mkdir */ 35939085Srvb { &vop_rmdir_desc, coda_rmdir }, /* rmdir */ 36039650Srvb { &vop_symlink_desc, coda_symlink }, /* symlink */ 36139650Srvb { &vop_readdir_desc, coda_readdir }, /* readdir */ 36239085Srvb { &vop_readlink_desc, coda_readlink }, /* readlink */ 36339650Srvb { &vop_abortop_desc, coda_abortop }, /* abortop */ 36439085Srvb { &vop_inactive_desc, coda_inactive }, /* inactive */ 36539650Srvb { &vop_reclaim_desc, coda_reclaim }, /* reclaim */ 36639085Srvb { &vop_lock_desc, coda_lock }, /* lock */ 36739085Srvb { &vop_unlock_desc, coda_unlock }, /* unlock */ 36839085Srvb { &vop_bmap_desc, coda_bmap }, /* bmap */ 36939085Srvb { &vop_strategy_desc, coda_strategy }, /* strategy */ 37039650Srvb { &vop_print_desc, coda_vop_error }, /* print */ 37139085Srvb { &vop_islocked_desc, coda_islocked }, /* islocked */ 37239650Srvb { &vop_pathconf_desc, coda_vop_error }, /* pathconf */ 37339650Srvb { &vop_advlock_desc, coda_vop_nop }, /* advlock */ 37439650Srvb { &vop_bwrite_desc, coda_vop_error }, /* bwrite */ 37539650Srvb { &vop_lease_desc, coda_vop_nop }, /* lease */ 37638759Srvb { &vop_poll_desc, (vop_t *) vop_stdpoll }, 37739085Srvb { &vop_getpages_desc, coda_fbsd_getpages }, /* pager intf.*/ 37839085Srvb { &vop_putpages_desc, coda_fbsd_putpages }, /* pager intf.*/ 37938625Srvb 38038759Srvb#if 0 38138625Srvb 38238759Srvb we need to define these someday 38338625Srvb#define UFS_BLKATOFF(aa, bb, cc, dd) VFSTOUFS((aa)->v_mount)->um_blkatoff(aa, bb, cc, dd) 38438625Srvb#define UFS_VALLOC(aa, bb, cc, dd) VFSTOUFS((aa)->v_mount)->um_valloc(aa, bb, cc, dd) 38538625Srvb#define UFS_VFREE(aa, bb, cc) VFSTOUFS((aa)->v_mount)->um_vfree(aa, bb, cc) 38638625Srvb#define UFS_TRUNCATE(aa, bb, cc, dd, ee) VFSTOUFS((aa)->v_mount)->um_truncate(aa, bb, cc, dd, ee) 38742374Sbde#define UFS_UPDATE(aa, bb) VFSTOUFS((aa)->v_mount)->um_update(aa, bb) 38838625Srvb 38938625Srvb missing 39038625Srvb { &vop_reallocblks_desc, (vop_t *) ufs_missingop }, 39138625Srvb { &vop_cachedlookup_desc, (vop_t *) ufs_lookup }, 39238625Srvb { &vop_whiteout_desc, (vop_t *) ufs_whiteout }, 39338625Srvb#endif 39438625Srvb { (struct vnodeop_desc*)NULL, (int(*)(void *))NULL } 39538625Srvb}; 39638625Srvb 39739085Srvbstatic struct vnodeopv_desc coda_vnodeop_opv_desc = 39839085Srvb { &coda_vnodeop_p, coda_vnodeop_entries }; 39938625Srvb 40039085SrvbVNODEOP_SET(coda_vnodeop_opv_desc); 40138625Srvb 40238625Srvb/* A generic panic: we were called with something we didn't define yet */ 40338625Srvbint 40439085Srvbcoda_vop_error(void *anon) { 40538625Srvb struct vnodeop_desc **desc = (struct vnodeop_desc **)anon; 40638625Srvb 40741202Srvb myprintf(("coda_vop_error: Vnode operation %s called, but not defined.\n", 40838625Srvb (*desc)->vdesc_name)); 40941202Srvb /* 41039085Srvb panic("coda_vop_error"); 41141202Srvb */ 41241202Srvb return EIO; 41338625Srvb} 41438625Srvb 41538625Srvb/* A generic do-nothing. For lease_check, advlock */ 41638625Srvbint 41739085Srvbcoda_vop_nop(void *anon) { 41838625Srvb struct vnodeop_desc **desc = (struct vnodeop_desc **)anon; 41938625Srvb 42039085Srvb if (codadebug) { 42138625Srvb myprintf(("Vnode operation %s called, but unsupported\n", 42238625Srvb (*desc)->vdesc_name)); 42338625Srvb } 42438625Srvb return (0); 42538625Srvb} 42638625Srvb 42738625Srvbint 42839085Srvbcoda_vnodeopstats_init(void) 42938625Srvb{ 43038625Srvb register int i; 43138625Srvb 43239085Srvb for(i=0;i<CODA_VNODEOPS_SIZE;i++) { 43339085Srvb coda_vnodeopstats[i].opcode = i; 43439085Srvb coda_vnodeopstats[i].entries = 0; 43539085Srvb coda_vnodeopstats[i].sat_intrn = 0; 43639085Srvb coda_vnodeopstats[i].unsat_intrn = 0; 43739085Srvb coda_vnodeopstats[i].gen_intrn = 0; 43838625Srvb } 43938625Srvb return 0; 44038625Srvb} 44138625Srvb 44238625Srvb/* 44339085Srvb * coda_open calls Venus to return the device, inode pair of the cache 44439085Srvb * file holding the data. Using iget, coda_open finds the vnode of the 44538625Srvb * cache file, and then opens it. 44638625Srvb */ 44738625Srvbint 44839085Srvbcoda_open(v) 44938625Srvb void *v; 45038625Srvb{ 45138625Srvb /* 45238625Srvb * NetBSD can pass the O_EXCL flag in mode, even though the check 45338625Srvb * has already happened. Venus defensively assumes that if open 45438625Srvb * is passed the EXCL, it must be a bug. We strip the flag here. 45538625Srvb */ 45638625Srvb/* true args */ 45738625Srvb struct vop_open_args *ap = v; 45838625Srvb register struct vnode **vpp = &(ap->a_vp); 45938625Srvb struct cnode *cp = VTOC(*vpp); 46038625Srvb int flag = ap->a_mode & (~O_EXCL); 46138625Srvb struct ucred *cred = ap->a_cred; 46238625Srvb struct proc *p = ap->a_p; 46338625Srvb/* locals */ 46438625Srvb int error; 46538625Srvb struct vnode *vp; 46638625Srvb dev_t dev; 46738625Srvb ino_t inode; 46838625Srvb 46939085Srvb MARK_ENTRY(CODA_OPEN_STATS); 47038625Srvb 47138625Srvb /* Check for open of control file. */ 47238625Srvb if (IS_CTL_VP(*vpp)) { 47338625Srvb /* XXX */ 47438625Srvb /* if (WRITEABLE(flag)) */ 47538625Srvb if (flag & (FWRITE | O_TRUNC | O_CREAT | O_EXCL)) { 47639085Srvb MARK_INT_FAIL(CODA_OPEN_STATS); 47738625Srvb return(EACCES); 47838625Srvb } 47939085Srvb MARK_INT_SAT(CODA_OPEN_STATS); 48038625Srvb return(0); 48138625Srvb } 48238625Srvb 48338625Srvb error = venus_open(vtomi((*vpp)), &cp->c_fid, flag, cred, p, &dev, &inode); 48438625Srvb if (error) 48538625Srvb return (error); 48638625Srvb if (!error) { 48739085Srvb CODADEBUG( CODA_OPEN,myprintf(("open: dev %d inode %d result %d\n", 48838625Srvb dev, inode, error)); ) 48938625Srvb } 49038625Srvb 49138625Srvb /* Translate the <device, inode> pair for the cache file into 49238625Srvb an inode pointer. */ 49339085Srvb error = coda_grab_vnode(dev, inode, &vp); 49438625Srvb if (error) 49538625Srvb return (error); 49638625Srvb 49738759Srvb /* We get the vnode back locked. Needs unlocked */ 49838759Srvb VOP_UNLOCK(vp, 0, p); 49938625Srvb /* Keep a reference until the close comes in. */ 50038625Srvb vref(*vpp); 50138625Srvb 50238625Srvb /* Save the vnode pointer for the cache file. */ 50338625Srvb if (cp->c_ovp == NULL) { 50438625Srvb cp->c_ovp = vp; 50538625Srvb } else { 50638625Srvb if (cp->c_ovp != vp) 50739085Srvb panic("coda_open: cp->c_ovp != ITOV(ip)"); 50838625Srvb } 50938625Srvb cp->c_ocount++; 51038625Srvb 51138625Srvb /* Flush the attribute cached if writing the file. */ 51238625Srvb if (flag & FWRITE) { 51338625Srvb cp->c_owrite++; 51438625Srvb cp->c_flags &= ~C_VATTR; 51538625Srvb } 51638625Srvb 51738625Srvb /* Save the <device, inode> pair for the cache file to speed 51838625Srvb up subsequent page_read's. */ 51938625Srvb cp->c_device = dev; 52038625Srvb cp->c_inode = inode; 52138625Srvb 52238625Srvb /* Open the cache file. */ 52338625Srvb error = VOP_OPEN(vp, flag, cred, p); 52438625Srvb if (error) { 52539085Srvb printf("coda_open: VOP_OPEN on container failed %d\n", error); 52638625Srvb return (error); 52738625Srvb } 52839650Srvb/* grab (above) does this when it calls newvnode unless it's in the cache*/ 52938625Srvb if (vp->v_type == VREG) { 53042315Seivind error = vfs_object_create(vp, p, cred); 53138625Srvb if (error != 0) { 53239085Srvb printf("coda_open: vfs_object_create() returns %d\n", error); 53338625Srvb vput(vp); 53438625Srvb } 53538625Srvb } 53639650Srvb 53738625Srvb return(error); 53838625Srvb} 53938625Srvb 54038625Srvb/* 54138625Srvb * Close the cache file used for I/O and notify Venus. 54238625Srvb */ 54338625Srvbint 54439085Srvbcoda_close(v) 54538625Srvb void *v; 54638625Srvb{ 54738625Srvb/* true args */ 54838625Srvb struct vop_close_args *ap = v; 54938625Srvb struct vnode *vp = ap->a_vp; 55038625Srvb struct cnode *cp = VTOC(vp); 55138625Srvb int flag = ap->a_fflag; 55238625Srvb struct ucred *cred = ap->a_cred; 55338625Srvb struct proc *p = ap->a_p; 55438625Srvb/* locals */ 55538625Srvb int error; 55638625Srvb 55739085Srvb MARK_ENTRY(CODA_CLOSE_STATS); 55838625Srvb 55938625Srvb /* Check for close of control file. */ 56038625Srvb if (IS_CTL_VP(vp)) { 56139085Srvb MARK_INT_SAT(CODA_CLOSE_STATS); 56238625Srvb return(0); 56338625Srvb } 56438625Srvb 56538625Srvb if (IS_UNMOUNTING(cp)) { 56638625Srvb if (cp->c_ovp) { 56739728Srvb#ifdef CODA_VERBOSE 56839085Srvb printf("coda_close: destroying container ref %d, ufs vp %p of vp %p/cp %p\n", 56938625Srvb vp->v_usecount, cp->c_ovp, vp, cp); 57039650Srvb#endif 57140708Srvb#ifdef hmm 57238625Srvb vgone(cp->c_ovp); 57340708Srvb#else 57440708Srvb VOP_CLOSE(cp->c_ovp, flag, cred, p); /* Do errors matter here? */ 57540708Srvb vrele(cp->c_ovp); 57640708Srvb#endif 57738625Srvb } else { 57839728Srvb#ifdef CODA_VERBOSE 57939085Srvb printf("coda_close: NO container vp %p/cp %p\n", vp, cp); 58039650Srvb#endif 58138625Srvb } 58238625Srvb return ENODEV; 58338625Srvb } else { 58438625Srvb VOP_CLOSE(cp->c_ovp, flag, cred, p); /* Do errors matter here? */ 58538625Srvb vrele(cp->c_ovp); 58638625Srvb } 58738625Srvb 58838625Srvb if (--cp->c_ocount == 0) 58938625Srvb cp->c_ovp = NULL; 59038625Srvb 59138625Srvb if (flag & FWRITE) /* file was opened for write */ 59238625Srvb --cp->c_owrite; 59338625Srvb 59438625Srvb error = venus_close(vtomi(vp), &cp->c_fid, flag, cred, p); 59538625Srvb vrele(CTOV(cp)); 59638625Srvb 59739085Srvb CODADEBUG(CODA_CLOSE, myprintf(("close: result %d\n",error)); ) 59838625Srvb return(error); 59938625Srvb} 60038625Srvb 60138625Srvbint 60239085Srvbcoda_read(v) 60338625Srvb void *v; 60438625Srvb{ 60538625Srvb struct vop_read_args *ap = v; 60638625Srvb 60738625Srvb ENTRY; 60839085Srvb return(coda_rdwr(ap->a_vp, ap->a_uio, UIO_READ, 60938625Srvb ap->a_ioflag, ap->a_cred, ap->a_uio->uio_procp)); 61038625Srvb} 61138625Srvb 61238625Srvbint 61339085Srvbcoda_write(v) 61438625Srvb void *v; 61538625Srvb{ 61638625Srvb struct vop_write_args *ap = v; 61738625Srvb 61838625Srvb ENTRY; 61939085Srvb return(coda_rdwr(ap->a_vp, ap->a_uio, UIO_WRITE, 62038625Srvb ap->a_ioflag, ap->a_cred, ap->a_uio->uio_procp)); 62138625Srvb} 62238625Srvb 62338625Srvbint 62439085Srvbcoda_rdwr(vp, uiop, rw, ioflag, cred, p) 62538625Srvb struct vnode *vp; 62638625Srvb struct uio *uiop; 62738625Srvb enum uio_rw rw; 62838625Srvb int ioflag; 62938625Srvb struct ucred *cred; 63038625Srvb struct proc *p; 63138625Srvb{ 63238625Srvb/* upcall decl */ 63338625Srvb /* NOTE: container file operation!!! */ 63438625Srvb/* locals */ 63538625Srvb struct cnode *cp = VTOC(vp); 63638625Srvb struct vnode *cfvp = cp->c_ovp; 63738625Srvb int igot_internally = 0; 63838625Srvb int opened_internally = 0; 63938625Srvb int error = 0; 64038625Srvb 64139085Srvb MARK_ENTRY(CODA_RDWR_STATS); 64238625Srvb 64339085Srvb CODADEBUG(CODA_RDWR, myprintf(("coda_rdwr(%d, %p, %d, %qd, %d)\n", rw, 64438625Srvb uiop->uio_iov->iov_base, uiop->uio_resid, 64538625Srvb uiop->uio_offset, uiop->uio_segflg)); ) 64638625Srvb 64738625Srvb /* Check for rdwr of control object. */ 64838625Srvb if (IS_CTL_VP(vp)) { 64939085Srvb MARK_INT_FAIL(CODA_RDWR_STATS); 65038625Srvb return(EINVAL); 65138625Srvb } 65238625Srvb 65338625Srvb /* 65438625Srvb * If file is not already open this must be a page 65538625Srvb * {read,write} request. Iget the cache file's inode 65638625Srvb * pointer if we still have its <device, inode> pair. 65738625Srvb * Otherwise, we must do an internal open to derive the 65838625Srvb * pair. 65938625Srvb */ 66038625Srvb if (cfvp == NULL) { 66138625Srvb /* 66238625Srvb * If we're dumping core, do the internal open. Otherwise 66338625Srvb * venus won't have the correct size of the core when 66438625Srvb * it's completely written. 66538625Srvb */ 66638625Srvb if (cp->c_inode != 0 && !(p && (p->p_acflag & ACORE))) { 66738625Srvb igot_internally = 1; 66839085Srvb error = coda_grab_vnode(cp->c_device, cp->c_inode, &cfvp); 66938625Srvb if (error) { 67039085Srvb MARK_INT_FAIL(CODA_RDWR_STATS); 67138625Srvb return(error); 67238625Srvb } 67338625Srvb /* 67438625Srvb * We get the vnode back locked in both Mach and 67538625Srvb * NetBSD. Needs unlocked 67638625Srvb */ 67738759Srvb VOP_UNLOCK(cfvp, 0, p); 67838625Srvb } 67938625Srvb else { 68038625Srvb opened_internally = 1; 68139085Srvb MARK_INT_GEN(CODA_OPEN_STATS); 68238625Srvb error = VOP_OPEN(vp, (rw == UIO_READ ? FREAD : FWRITE), 68338625Srvb cred, p); 68439085Srvbprintf("coda_rdwr: Internally Opening %p\n", vp); 68538625Srvb if (error) { 68639085Srvb printf("coda_rdwr: VOP_OPEN on container failed %d\n", error); 68738625Srvb return (error); 68838625Srvb } 68938625Srvb if (vp->v_type == VREG) { 69042315Seivind error = vfs_object_create(vp, p, cred); 69138625Srvb if (error != 0) { 69239085Srvb printf("coda_rdwr: vfs_object_create() returns %d\n", error); 69338625Srvb vput(vp); 69438625Srvb } 69538625Srvb } 69638625Srvb if (error) { 69739085Srvb MARK_INT_FAIL(CODA_RDWR_STATS); 69838625Srvb return(error); 69938625Srvb } 70038625Srvb cfvp = cp->c_ovp; 70138625Srvb } 70238625Srvb } 70338625Srvb 70438625Srvb /* Have UFS handle the call. */ 70539085Srvb CODADEBUG(CODA_RDWR, myprintf(("indirect rdwr: fid = (%lx.%lx.%lx), refcnt = %d\n", 70638625Srvb cp->c_fid.Volume, cp->c_fid.Vnode, 70738625Srvb cp->c_fid.Unique, CTOV(cp)->v_usecount)); ) 70838625Srvb 70939650Srvb 71038625Srvb if (rw == UIO_READ) { 71138625Srvb error = VOP_READ(cfvp, uiop, ioflag, cred); 71238625Srvb } else { 71338625Srvb error = VOP_WRITE(cfvp, uiop, ioflag, cred); 71438625Srvb /* ufs_write updates the vnode_pager_setsize for the vnode/object */ 71539650Srvb 71638625Srvb { struct vattr attr; 71738625Srvb 71838625Srvb if (VOP_GETATTR(cfvp, &attr, cred, p) == 0) { 71938625Srvb vnode_pager_setsize(vp, attr.va_size); 72038625Srvb } 72138625Srvb } 72238625Srvb } 72338625Srvb 72438625Srvb if (error) 72539085Srvb MARK_INT_FAIL(CODA_RDWR_STATS); 72638625Srvb else 72739085Srvb MARK_INT_SAT(CODA_RDWR_STATS); 72838625Srvb 72938625Srvb /* Do an internal close if necessary. */ 73038625Srvb if (opened_internally) { 73139085Srvb MARK_INT_GEN(CODA_CLOSE_STATS); 73238625Srvb (void)VOP_CLOSE(vp, (rw == UIO_READ ? FREAD : FWRITE), cred, p); 73338625Srvb } 73438625Srvb 73538625Srvb /* Invalidate cached attributes if writing. */ 73638625Srvb if (rw == UIO_WRITE) 73738625Srvb cp->c_flags &= ~C_VATTR; 73838625Srvb return(error); 73938625Srvb} 74038625Srvb 74138625Srvbint 74239085Srvbcoda_ioctl(v) 74338625Srvb void *v; 74438625Srvb{ 74538625Srvb/* true args */ 74638625Srvb struct vop_ioctl_args *ap = v; 74738625Srvb struct vnode *vp = ap->a_vp; 74838625Srvb int com = ap->a_command; 74938625Srvb caddr_t data = ap->a_data; 75038625Srvb int flag = ap->a_fflag; 75138625Srvb struct ucred *cred = ap->a_cred; 75238625Srvb struct proc *p = ap->a_p; 75338625Srvb/* locals */ 75438625Srvb int error; 75538625Srvb struct vnode *tvp; 75638625Srvb struct nameidata ndp; 75738625Srvb struct PioctlData *iap = (struct PioctlData *)data; 75838625Srvb 75939085Srvb MARK_ENTRY(CODA_IOCTL_STATS); 76038625Srvb 76139085Srvb CODADEBUG(CODA_IOCTL, myprintf(("in coda_ioctl on %s\n", iap->path));) 76238625Srvb 76338625Srvb /* Don't check for operation on a dying object, for ctlvp it 76438625Srvb shouldn't matter */ 76538625Srvb 76638625Srvb /* Must be control object to succeed. */ 76738625Srvb if (!IS_CTL_VP(vp)) { 76839085Srvb MARK_INT_FAIL(CODA_IOCTL_STATS); 76939085Srvb CODADEBUG(CODA_IOCTL, myprintf(("coda_ioctl error: vp != ctlvp"));) 77038625Srvb return (EOPNOTSUPP); 77138625Srvb } 77238625Srvb /* Look up the pathname. */ 77338625Srvb 77438625Srvb /* Should we use the name cache here? It would get it from 77538625Srvb lookupname sooner or later anyway, right? */ 77638625Srvb 77743382Sbde NDINIT(&ndp, LOOKUP, (iap->follow ? FOLLOW : NOFOLLOW), UIO_USERSPACE, iap->path, p); 77838625Srvb error = namei(&ndp); 77938625Srvb tvp = ndp.ni_vp; 78038625Srvb 78138625Srvb if (error) { 78239085Srvb MARK_INT_FAIL(CODA_IOCTL_STATS); 78339085Srvb CODADEBUG(CODA_IOCTL, myprintf(("coda_ioctl error: lookup returns %d\n", 78438625Srvb error));) 78538625Srvb return(error); 78638625Srvb } 78738625Srvb 78838625Srvb /* 78938625Srvb * Make sure this is a coda style cnode, but it may be a 79038625Srvb * different vfsp 79138625Srvb */ 79238625Srvb /* XXX: this totally violates the comment about vtagtype in vnode.h */ 79339085Srvb if (tvp->v_tag != VT_CODA) { 79438625Srvb vrele(tvp); 79539085Srvb MARK_INT_FAIL(CODA_IOCTL_STATS); 79639085Srvb CODADEBUG(CODA_IOCTL, 79739085Srvb myprintf(("coda_ioctl error: %s not a coda object\n", 79838625Srvb iap->path));) 79938625Srvb return(EINVAL); 80038625Srvb } 80138625Srvb 80238625Srvb if (iap->vi.in_size > VC_MAXDATASIZE) { 80338625Srvb vrele(tvp); 80438625Srvb return(EINVAL); 80538625Srvb } 80638625Srvb error = venus_ioctl(vtomi(tvp), &((VTOC(tvp))->c_fid), com, flag, data, cred, p); 80738625Srvb 80838625Srvb if (error) 80939085Srvb MARK_INT_FAIL(CODA_IOCTL_STATS); 81038625Srvb else 81139085Srvb CODADEBUG(CODA_IOCTL, myprintf(("Ioctl returns %d \n", error)); ) 81238625Srvb 81338625Srvb vrele(tvp); 81438625Srvb return(error); 81538625Srvb} 81638625Srvb 81738625Srvb/* 81838625Srvb * To reduce the cost of a user-level venus;we cache attributes in 81938625Srvb * the kernel. Each cnode has storage allocated for an attribute. If 82038625Srvb * c_vattr is valid, return a reference to it. Otherwise, get the 82138625Srvb * attributes from venus and store them in the cnode. There is some 82238625Srvb * question if this method is a security leak. But I think that in 82338625Srvb * order to make this call, the user must have done a lookup and 82438625Srvb * opened the file, and therefore should already have access. 82538625Srvb */ 82638625Srvbint 82739085Srvbcoda_getattr(v) 82838625Srvb void *v; 82938625Srvb{ 83038625Srvb/* true args */ 83138625Srvb struct vop_getattr_args *ap = v; 83238625Srvb struct vnode *vp = ap->a_vp; 83338625Srvb struct cnode *cp = VTOC(vp); 83438625Srvb struct vattr *vap = ap->a_vap; 83538625Srvb struct ucred *cred = ap->a_cred; 83638625Srvb struct proc *p = ap->a_p; 83738625Srvb/* locals */ 83838625Srvb int error; 83938625Srvb 84039085Srvb MARK_ENTRY(CODA_GETATTR_STATS); 84138625Srvb 84238625Srvb if (IS_UNMOUNTING(cp)) 84338625Srvb return ENODEV; 84438759Srvb 84538625Srvb /* Check for getattr of control object. */ 84638625Srvb if (IS_CTL_VP(vp)) { 84739085Srvb MARK_INT_FAIL(CODA_GETATTR_STATS); 84838625Srvb return(ENOENT); 84938625Srvb } 85038625Srvb 85138625Srvb /* Check to see if the attributes have already been cached */ 85238625Srvb if (VALID_VATTR(cp)) { 85339085Srvb CODADEBUG(CODA_GETATTR, { myprintf(("attr cache hit: (%lx.%lx.%lx)\n", 85438625Srvb cp->c_fid.Volume, 85538625Srvb cp->c_fid.Vnode, 85638625Srvb cp->c_fid.Unique));}); 85739085Srvb CODADEBUG(CODA_GETATTR, if (!(codadebug & ~CODA_GETATTR)) 85838625Srvb print_vattr(&cp->c_vattr); ); 85938625Srvb 86038625Srvb *vap = cp->c_vattr; 86139085Srvb MARK_INT_SAT(CODA_GETATTR_STATS); 86238625Srvb return(0); 86338625Srvb } 86438625Srvb 86538625Srvb error = venus_getattr(vtomi(vp), &cp->c_fid, cred, p, vap); 86638625Srvb 86738625Srvb if (!error) { 86839085Srvb CODADEBUG(CODA_GETATTR, myprintf(("getattr miss (%lx.%lx.%lx): result %d\n", 86938625Srvb cp->c_fid.Volume, 87038625Srvb cp->c_fid.Vnode, 87138625Srvb cp->c_fid.Unique, 87238625Srvb error)); ) 87338625Srvb 87439085Srvb CODADEBUG(CODA_GETATTR, if (!(codadebug & ~CODA_GETATTR)) 87538625Srvb print_vattr(vap); ); 87638625Srvb 87738625Srvb { int size = vap->va_size; 87838625Srvb struct vnode *convp = cp->c_ovp; 87938625Srvb if (convp != (struct vnode *)0) { 88038625Srvb vnode_pager_setsize(convp, size); 88138625Srvb } 88238625Srvb } 88338625Srvb /* If not open for write, store attributes in cnode */ 88439085Srvb if ((cp->c_owrite == 0) && (coda_attr_cache)) { 88538625Srvb cp->c_vattr = *vap; 88638625Srvb cp->c_flags |= C_VATTR; 88738625Srvb } 88838625Srvb 88938625Srvb } 89038625Srvb return(error); 89138625Srvb} 89238625Srvb 89338625Srvbint 89439085Srvbcoda_setattr(v) 89538625Srvb void *v; 89638625Srvb{ 89738625Srvb/* true args */ 89838625Srvb struct vop_setattr_args *ap = v; 89938625Srvb register struct vnode *vp = ap->a_vp; 90038625Srvb struct cnode *cp = VTOC(vp); 90138625Srvb register struct vattr *vap = ap->a_vap; 90238625Srvb struct ucred *cred = ap->a_cred; 90338625Srvb struct proc *p = ap->a_p; 90438625Srvb/* locals */ 90538625Srvb int error; 90638625Srvb 90739085Srvb MARK_ENTRY(CODA_SETATTR_STATS); 90838625Srvb 90938625Srvb /* Check for setattr of control object. */ 91038625Srvb if (IS_CTL_VP(vp)) { 91139085Srvb MARK_INT_FAIL(CODA_SETATTR_STATS); 91238625Srvb return(ENOENT); 91338625Srvb } 91438625Srvb 91539085Srvb if (codadebug & CODADBGMSK(CODA_SETATTR)) { 91638625Srvb print_vattr(vap); 91738625Srvb } 91838625Srvb error = venus_setattr(vtomi(vp), &cp->c_fid, vap, cred, p); 91938625Srvb 92038625Srvb if (!error) 92138625Srvb cp->c_flags &= ~C_VATTR; 92238625Srvb 92338625Srvb { int size = vap->va_size; 92438625Srvb struct vnode *convp = cp->c_ovp; 92538625Srvb if (size != VNOVAL && convp != (struct vnode *)0) { 92638625Srvb vnode_pager_setsize(convp, size); 92738625Srvb } 92838625Srvb } 92939085Srvb CODADEBUG(CODA_SETATTR, myprintf(("setattr %d\n", error)); ) 93038625Srvb return(error); 93138625Srvb} 93238625Srvb 93338625Srvbint 93439085Srvbcoda_access(v) 93538625Srvb void *v; 93638625Srvb{ 93738625Srvb/* true args */ 93838625Srvb struct vop_access_args *ap = v; 93938625Srvb struct vnode *vp = ap->a_vp; 94038625Srvb struct cnode *cp = VTOC(vp); 94138625Srvb int mode = ap->a_mode; 94238625Srvb struct ucred *cred = ap->a_cred; 94338625Srvb struct proc *p = ap->a_p; 94438625Srvb/* locals */ 94538625Srvb int error; 94638625Srvb 94739085Srvb MARK_ENTRY(CODA_ACCESS_STATS); 94838625Srvb 94938625Srvb /* Check for access of control object. Only read access is 95038625Srvb allowed on it. */ 95138625Srvb if (IS_CTL_VP(vp)) { 95238625Srvb /* bogus hack - all will be marked as successes */ 95339085Srvb MARK_INT_SAT(CODA_ACCESS_STATS); 95438625Srvb return(((mode & VREAD) && !(mode & (VWRITE | VEXEC))) 95538625Srvb ? 0 : EACCES); 95638625Srvb } 95738625Srvb 95838625Srvb /* 95938625Srvb * if the file is a directory, and we are checking exec (eg lookup) 96038625Srvb * access, and the file is in the namecache, then the user must have 96138625Srvb * lookup access to it. 96238625Srvb */ 96339085Srvb if (coda_access_cache) { 96438625Srvb if ((vp->v_type == VDIR) && (mode & VEXEC)) { 96539085Srvb if (coda_nc_lookup(cp, ".", 1, cred)) { 96639085Srvb MARK_INT_SAT(CODA_ACCESS_STATS); 96738625Srvb return(0); /* it was in the cache */ 96838625Srvb } 96938625Srvb } 97038625Srvb } 97138625Srvb 97238625Srvb error = venus_access(vtomi(vp), &cp->c_fid, mode, cred, p); 97338625Srvb 97438625Srvb return(error); 97538625Srvb} 97638625Srvb 97738625Srvb/* 97839085Srvb * CODA abort op, called after namei() when a CREATE/DELETE isn't actually 97939085Srvb * done. If a buffer has been saved in anticipation of a coda_create or 98039085Srvb * a coda_remove, delete it. 98138625Srvb */ 98238625Srvb/* ARGSUSED */ 98338625Srvbint 98439085Srvbcoda_abortop(v) 98538625Srvb void *v; 98638625Srvb{ 98738625Srvb/* true args */ 98838625Srvb struct vop_abortop_args /* { 98938625Srvb struct vnode *a_dvp; 99038625Srvb struct componentname *a_cnp; 99138625Srvb } */ *ap = v; 99238625Srvb/* upcall decl */ 99338625Srvb/* locals */ 99438625Srvb 99538625Srvb if ((ap->a_cnp->cn_flags & (HASBUF | SAVESTART)) == HASBUF) 99638759Srvb zfree(namei_zone, ap->a_cnp->cn_pnbuf); 99738625Srvb return (0); 99838625Srvb} 99938625Srvb 100038625Srvbint 100139085Srvbcoda_readlink(v) 100238625Srvb void *v; 100338625Srvb{ 100438625Srvb/* true args */ 100538625Srvb struct vop_readlink_args *ap = v; 100638625Srvb struct vnode *vp = ap->a_vp; 100738625Srvb struct cnode *cp = VTOC(vp); 100838625Srvb struct uio *uiop = ap->a_uio; 100938625Srvb struct ucred *cred = ap->a_cred; 101038625Srvb struct proc *p = ap->a_uio->uio_procp; 101138625Srvb/* locals */ 101238625Srvb int error; 101338625Srvb char *str; 101438625Srvb int len; 101538625Srvb 101639085Srvb MARK_ENTRY(CODA_READLINK_STATS); 101738625Srvb 101838625Srvb /* Check for readlink of control object. */ 101938625Srvb if (IS_CTL_VP(vp)) { 102039085Srvb MARK_INT_FAIL(CODA_READLINK_STATS); 102138625Srvb return(ENOENT); 102238625Srvb } 102338625Srvb 102439085Srvb if ((coda_symlink_cache) && (VALID_SYMLINK(cp))) { /* symlink was cached */ 102538625Srvb uiop->uio_rw = UIO_READ; 102638625Srvb error = uiomove(cp->c_symlink, (int)cp->c_symlen, uiop); 102738625Srvb if (error) 102839085Srvb MARK_INT_FAIL(CODA_READLINK_STATS); 102938625Srvb else 103039085Srvb MARK_INT_SAT(CODA_READLINK_STATS); 103138625Srvb return(error); 103238625Srvb } 103338625Srvb 103438625Srvb error = venus_readlink(vtomi(vp), &cp->c_fid, cred, p, &str, &len); 103538625Srvb 103638625Srvb if (!error) { 103738625Srvb uiop->uio_rw = UIO_READ; 103838625Srvb error = uiomove(str, len, uiop); 103938625Srvb 104039085Srvb if (coda_symlink_cache) { 104138625Srvb cp->c_symlink = str; 104238625Srvb cp->c_symlen = len; 104338625Srvb cp->c_flags |= C_SYMLINK; 104438625Srvb } else 104539085Srvb CODA_FREE(str, len); 104638625Srvb } 104738625Srvb 104839085Srvb CODADEBUG(CODA_READLINK, myprintf(("in readlink result %d\n",error));) 104938625Srvb return(error); 105038625Srvb} 105138625Srvb 105238625Srvbint 105339085Srvbcoda_fsync(v) 105438625Srvb void *v; 105538625Srvb{ 105638625Srvb/* true args */ 105738625Srvb struct vop_fsync_args *ap = v; 105838625Srvb struct vnode *vp = ap->a_vp; 105938625Srvb struct cnode *cp = VTOC(vp); 106038625Srvb struct ucred *cred = ap->a_cred; 106138625Srvb struct proc *p = ap->a_p; 106238625Srvb/* locals */ 106338625Srvb struct vnode *convp = cp->c_ovp; 106438625Srvb int error; 106538625Srvb 106639085Srvb MARK_ENTRY(CODA_FSYNC_STATS); 106738625Srvb 106838625Srvb /* Check for fsync on an unmounting object */ 106938625Srvb /* The NetBSD kernel, in it's infinite wisdom, can try to fsync 107038625Srvb * after an unmount has been initiated. This is a Bad Thing, 107138625Srvb * which we have to avoid. Not a legitimate failure for stats. 107238625Srvb */ 107338625Srvb if (IS_UNMOUNTING(cp)) { 107438625Srvb return(ENODEV); 107538625Srvb } 107638625Srvb 107738625Srvb /* Check for fsync of control object. */ 107838625Srvb if (IS_CTL_VP(vp)) { 107939085Srvb MARK_INT_SAT(CODA_FSYNC_STATS); 108038625Srvb return(0); 108138625Srvb } 108238625Srvb 108338625Srvb if (convp) 108438625Srvb VOP_FSYNC(convp, cred, MNT_WAIT, p); 108538625Srvb 108638625Srvb /* 108738625Srvb * We see fsyncs with usecount == 1 then usecount == 0. 108838625Srvb * For now we ignore them. 108938625Srvb */ 109038625Srvb /* 109138625Srvb if (!vp->v_usecount) { 109239085Srvb printf("coda_fsync on vnode %p with %d usecount. c_flags = %x (%x)\n", 109338625Srvb vp, vp->v_usecount, cp->c_flags, cp->c_flags&C_PURGING); 109438625Srvb } 109538625Srvb */ 109638625Srvb 109738625Srvb /* 109838625Srvb * We can expect fsync on any vnode at all if venus is pruging it. 109938625Srvb * Venus can't very well answer the fsync request, now can it? 110038625Srvb * Hopefully, it won't have to, because hopefully, venus preserves 110138625Srvb * the (possibly untrue) invariant that it never purges an open 110238625Srvb * vnode. Hopefully. 110338625Srvb */ 110438625Srvb if (cp->c_flags & C_PURGING) { 110538625Srvb return(0); 110638625Srvb } 110738625Srvb 110838625Srvb /* needs research */ 110938625Srvb return 0; 111038625Srvb error = venus_fsync(vtomi(vp), &cp->c_fid, cred, p); 111138625Srvb 111239085Srvb CODADEBUG(CODA_FSYNC, myprintf(("in fsync result %d\n",error)); ); 111338625Srvb return(error); 111438625Srvb} 111538625Srvb 111638625Srvbint 111739085Srvbcoda_inactive(v) 111838625Srvb void *v; 111938625Srvb{ 112038625Srvb /* XXX - at the moment, inactive doesn't look at cred, and doesn't 112138625Srvb have a proc pointer. Oops. */ 112238625Srvb/* true args */ 112338625Srvb struct vop_inactive_args *ap = v; 112438625Srvb struct vnode *vp = ap->a_vp; 112538625Srvb struct cnode *cp = VTOC(vp); 112638625Srvb struct ucred *cred __attribute__((unused)) = NULL; 112738625Srvb struct proc *p __attribute__((unused)) = curproc; 112838625Srvb/* upcall decl */ 112938625Srvb/* locals */ 113038625Srvb 113138625Srvb /* We don't need to send inactive to venus - DCS */ 113239085Srvb MARK_ENTRY(CODA_INACTIVE_STATS); 113338625Srvb 113438625Srvb if (IS_CTL_VP(vp)) { 113539085Srvb MARK_INT_SAT(CODA_INACTIVE_STATS); 113638625Srvb return 0; 113738625Srvb } 113838625Srvb 113939085Srvb CODADEBUG(CODA_INACTIVE, myprintf(("in inactive, %lx.%lx.%lx. vfsp %p\n", 114038625Srvb cp->c_fid.Volume, cp->c_fid.Vnode, 114138625Srvb cp->c_fid.Unique, vp->v_mount));) 114238625Srvb 114338625Srvb /* If an array has been allocated to hold the symlink, deallocate it */ 114439085Srvb if ((coda_symlink_cache) && (VALID_SYMLINK(cp))) { 114538625Srvb if (cp->c_symlink == NULL) 114639085Srvb panic("coda_inactive: null symlink pointer in cnode"); 114738625Srvb 114839085Srvb CODA_FREE(cp->c_symlink, cp->c_symlen); 114938625Srvb cp->c_flags &= ~C_SYMLINK; 115038625Srvb cp->c_symlen = 0; 115138625Srvb } 115238625Srvb 115338625Srvb /* Remove it from the table so it can't be found. */ 115439085Srvb coda_unsave(cp); 115539085Srvb if ((struct coda_mntinfo *)(vp->v_mount->mnt_data) == NULL) { 115638625Srvb myprintf(("Help! vfsp->vfs_data was NULL, but vnode %p wasn't dying\n", vp)); 115739085Srvb panic("badness in coda_inactive\n"); 115838625Srvb } 115938625Srvb 116038625Srvb if (IS_UNMOUNTING(cp)) { 116138625Srvb#ifdef DEBUG 116239085Srvb printf("coda_inactive: IS_UNMOUNTING use %d: vp %p, cp %p\n", vp->v_usecount, vp, cp); 116338625Srvb if (cp->c_ovp != NULL) 116439085Srvb printf("coda_inactive: cp->ovp != NULL use %d: vp %p, cp %p\n", 116538625Srvb vp->v_usecount, vp, cp); 116638625Srvb#endif 116738759Srvb lockmgr(&cp->c_lock, LK_RELEASE, &vp->v_interlock, p); 116838625Srvb } else { 116939650Srvb#ifdef OLD_DIAGNOSTIC 117038625Srvb if (CTOV(cp)->v_usecount) { 117139085Srvb panic("coda_inactive: nonzero reference count"); 117238625Srvb } 117338625Srvb if (cp->c_ovp != NULL) { 117439085Srvb panic("coda_inactive: cp->ovp != NULL"); 117538625Srvb } 117638625Srvb#endif 117738759Srvb VOP_UNLOCK(vp, 0, p); 117838625Srvb vgone(vp); 117938625Srvb } 118038625Srvb 118139085Srvb MARK_INT_SAT(CODA_INACTIVE_STATS); 118238625Srvb return(0); 118338625Srvb} 118438625Srvb 118538625Srvb/* 118638625Srvb * Remote file system operations having to do with directory manipulation. 118738625Srvb */ 118838625Srvb 118938625Srvb/* 119038625Srvb * It appears that in NetBSD, lookup is supposed to return the vnode locked 119138625Srvb */ 119238625Srvbint 119339085Srvbcoda_lookup(v) 119438625Srvb void *v; 119538625Srvb{ 119638625Srvb/* true args */ 119738625Srvb struct vop_lookup_args *ap = v; 119838625Srvb struct vnode *dvp = ap->a_dvp; 119938625Srvb struct cnode *dcp = VTOC(dvp); 120038625Srvb struct vnode **vpp = ap->a_vpp; 120138625Srvb /* 120238625Srvb * It looks as though ap->a_cnp->ni_cnd->cn_nameptr holds the rest 120338625Srvb * of the string to xlate, and that we must try to get at least 120438625Srvb * ap->a_cnp->ni_cnd->cn_namelen of those characters to macth. I 120538625Srvb * could be wrong. 120638625Srvb */ 120738625Srvb struct componentname *cnp = ap->a_cnp; 120838625Srvb struct ucred *cred = cnp->cn_cred; 120938625Srvb struct proc *p = cnp->cn_proc; 121038625Srvb/* locals */ 121138625Srvb struct cnode *cp; 121238625Srvb const char *nm = cnp->cn_nameptr; 121338625Srvb int len = cnp->cn_namelen; 121438625Srvb ViceFid VFid; 121538625Srvb int vtype; 121638625Srvb int error = 0; 121738625Srvb 121839085Srvb MARK_ENTRY(CODA_LOOKUP_STATS); 121938625Srvb 122039085Srvb CODADEBUG(CODA_LOOKUP, myprintf(("lookup: %s in %lx.%lx.%lx\n", 122138625Srvb nm, dcp->c_fid.Volume, 122238625Srvb dcp->c_fid.Vnode, dcp->c_fid.Unique));); 122338625Srvb 122438625Srvb /* Check for lookup of control object. */ 122538625Srvb if (IS_CTL_NAME(dvp, nm, len)) { 122639085Srvb *vpp = coda_ctlvp; 122738625Srvb vref(*vpp); 122839085Srvb MARK_INT_SAT(CODA_LOOKUP_STATS); 122938625Srvb goto exit; 123038625Srvb } 123138625Srvb 123239085Srvb if (len+1 > CODA_MAXNAMLEN) { 123339085Srvb MARK_INT_FAIL(CODA_LOOKUP_STATS); 123439085Srvb CODADEBUG(CODA_LOOKUP, myprintf(("name too long: lookup, %lx.%lx.%lx(%s)\n", 123538625Srvb dcp->c_fid.Volume, dcp->c_fid.Vnode, 123638625Srvb dcp->c_fid.Unique, nm));); 123738625Srvb *vpp = (struct vnode *)0; 123838625Srvb error = EINVAL; 123938625Srvb goto exit; 124038625Srvb } 124138625Srvb /* First try to look the file up in the cfs name cache */ 124238625Srvb /* lock the parent vnode? */ 124339085Srvb cp = coda_nc_lookup(dcp, nm, len, cred); 124438625Srvb if (cp) { 124538625Srvb *vpp = CTOV(cp); 124638625Srvb vref(*vpp); 124739085Srvb CODADEBUG(CODA_LOOKUP, 124838625Srvb myprintf(("lookup result %d vpp %p\n",error,*vpp));) 124938625Srvb } else { 125038625Srvb 125138625Srvb /* The name wasn't cached, so we need to contact Venus */ 125238625Srvb error = venus_lookup(vtomi(dvp), &dcp->c_fid, nm, len, cred, p, &VFid, &vtype); 125338625Srvb 125438625Srvb if (error) { 125539085Srvb MARK_INT_FAIL(CODA_LOOKUP_STATS); 125639085Srvb CODADEBUG(CODA_LOOKUP, myprintf(("lookup error on %lx.%lx.%lx(%s)%d\n", 125738625Srvb dcp->c_fid.Volume, dcp->c_fid.Vnode, dcp->c_fid.Unique, nm, error));) 125838625Srvb *vpp = (struct vnode *)0; 125938625Srvb } else { 126039085Srvb MARK_INT_SAT(CODA_LOOKUP_STATS); 126139085Srvb CODADEBUG(CODA_LOOKUP, 126238625Srvb myprintf(("lookup: vol %lx vno %lx uni %lx type %o result %d\n", 126338625Srvb VFid.Volume, VFid.Vnode, VFid.Unique, vtype, 126438625Srvb error)); ) 126538625Srvb 126639085Srvb cp = make_coda_node(&VFid, dvp->v_mount, vtype); 126738625Srvb *vpp = CTOV(cp); 126838625Srvb 126938625Srvb /* enter the new vnode in the Name Cache only if the top bit isn't set */ 127038625Srvb /* And don't enter a new vnode for an invalid one! */ 127139085Srvb if (!(vtype & CODA_NOCACHE)) 127239085Srvb coda_nc_enter(VTOC(dvp), nm, len, cred, VTOC(*vpp)); 127338625Srvb } 127438625Srvb } 127538625Srvb 127638625Srvb exit: 127738625Srvb /* 127838625Srvb * If we are creating, and this was the last name to be looked up, 127938625Srvb * and the error was ENOENT, then there really shouldn't be an 128038625Srvb * error and we can make the leaf NULL and return success. Since 128138625Srvb * this is supposed to work under Mach as well as NetBSD, we're 128238625Srvb * leaving this fn wrapped. We also must tell lookup/namei that 128338625Srvb * we need to save the last component of the name. (Create will 128438625Srvb * have to free the name buffer later...lucky us...) 128538625Srvb */ 128638625Srvb if (((cnp->cn_nameiop == CREATE) || (cnp->cn_nameiop == RENAME)) 128738625Srvb && (cnp->cn_flags & ISLASTCN) 128838625Srvb && (error == ENOENT)) 128938625Srvb { 129038625Srvb error = EJUSTRETURN; 129138625Srvb cnp->cn_flags |= SAVENAME; 129238625Srvb *ap->a_vpp = NULL; 129338625Srvb } 129438625Srvb 129538625Srvb /* 129638625Srvb * If we are removing, and we are at the last element, and we 129738625Srvb * found it, then we need to keep the name around so that the 129838625Srvb * removal will go ahead as planned. Unfortunately, this will 129938625Srvb * probably also lock the to-be-removed vnode, which may or may 130038625Srvb * not be a good idea. I'll have to look at the bits of 130139085Srvb * coda_remove to make sure. We'll only save the name if we did in 130239085Srvb * fact find the name, otherwise coda_remove won't have a chance 130338625Srvb * to free the pathname. 130438625Srvb */ 130538625Srvb if ((cnp->cn_nameiop == DELETE) 130638625Srvb && (cnp->cn_flags & ISLASTCN) 130738625Srvb && !error) 130838625Srvb { 130938625Srvb cnp->cn_flags |= SAVENAME; 131038625Srvb } 131138625Srvb 131238625Srvb /* 131338625Srvb * If the lookup went well, we need to (potentially?) unlock the 131438625Srvb * parent, and lock the child. We are only responsible for 131538625Srvb * checking to see if the parent is supposed to be unlocked before 131638625Srvb * we return. We must always lock the child (provided there is 131738625Srvb * one, and (the parent isn't locked or it isn't the same as the 131838625Srvb * parent.) Simple, huh? We can never leave the parent locked unless 131938625Srvb * we are ISLASTCN 132038625Srvb */ 132138625Srvb if (!error || (error == EJUSTRETURN)) { 132238625Srvb if (!(cnp->cn_flags & LOCKPARENT) || !(cnp->cn_flags & ISLASTCN)) { 132338759Srvb if ((error = VOP_UNLOCK(dvp, 0, p))) { 132438625Srvb return error; 132538625Srvb } 132638625Srvb /* 132738625Srvb * The parent is unlocked. As long as there is a child, 132838625Srvb * lock it without bothering to check anything else. 132938625Srvb */ 133038625Srvb if (*ap->a_vpp) { 133138759Srvb if ((error = VOP_LOCK(*ap->a_vpp, LK_EXCLUSIVE, p))) { 133239085Srvb printf("coda_lookup: "); 133338625Srvb panic("unlocked parent but couldn't lock child"); 133438625Srvb } 133538625Srvb } 133638625Srvb } else { 133738625Srvb /* The parent is locked, and may be the same as the child */ 133838625Srvb if (*ap->a_vpp && (*ap->a_vpp != dvp)) { 133938625Srvb /* Different, go ahead and lock it. */ 134038759Srvb if ((error = VOP_LOCK(*ap->a_vpp, LK_EXCLUSIVE, p))) { 134139085Srvb printf("coda_lookup: "); 134238625Srvb panic("unlocked parent but couldn't lock child"); 134338625Srvb } 134438625Srvb } 134538625Srvb } 134638625Srvb } else { 134738625Srvb /* If the lookup failed, we need to ensure that the leaf is NULL */ 134838625Srvb /* Don't change any locking? */ 134938625Srvb *ap->a_vpp = NULL; 135038625Srvb } 135138625Srvb return(error); 135238625Srvb} 135338625Srvb 135438625Srvb/*ARGSUSED*/ 135538625Srvbint 135639085Srvbcoda_create(v) 135738625Srvb void *v; 135838625Srvb{ 135938625Srvb/* true args */ 136038625Srvb struct vop_create_args *ap = v; 136138625Srvb struct vnode *dvp = ap->a_dvp; 136238625Srvb struct cnode *dcp = VTOC(dvp); 136338625Srvb struct vattr *va = ap->a_vap; 136438625Srvb int exclusive = 1; 136538625Srvb int mode = ap->a_vap->va_mode; 136638625Srvb struct vnode **vpp = ap->a_vpp; 136738625Srvb struct componentname *cnp = ap->a_cnp; 136838625Srvb struct ucred *cred = cnp->cn_cred; 136938625Srvb struct proc *p = cnp->cn_proc; 137038625Srvb/* locals */ 137138625Srvb int error; 137238625Srvb struct cnode *cp; 137338625Srvb const char *nm = cnp->cn_nameptr; 137438625Srvb int len = cnp->cn_namelen; 137538625Srvb ViceFid VFid; 137638625Srvb struct vattr attr; 137738625Srvb 137839085Srvb MARK_ENTRY(CODA_CREATE_STATS); 137938625Srvb 138038625Srvb /* All creates are exclusive XXX */ 138138625Srvb /* I'm assuming the 'mode' argument is the file mode bits XXX */ 138238625Srvb 138338625Srvb /* Check for create of control object. */ 138438625Srvb if (IS_CTL_NAME(dvp, nm, len)) { 138538625Srvb *vpp = (struct vnode *)0; 138639085Srvb MARK_INT_FAIL(CODA_CREATE_STATS); 138738625Srvb return(EACCES); 138838625Srvb } 138938625Srvb 139038625Srvb error = venus_create(vtomi(dvp), &dcp->c_fid, nm, len, exclusive, mode, va, cred, p, &VFid, &attr); 139138625Srvb 139238625Srvb if (!error) { 139338625Srvb 139438625Srvb /* If this is an exclusive create, panic if the file already exists. */ 139538625Srvb /* Venus should have detected the file and reported EEXIST. */ 139638625Srvb 139738625Srvb if ((exclusive == 1) && 139839085Srvb (coda_find(&VFid) != NULL)) 139938625Srvb panic("cnode existed for newly created file!"); 140038625Srvb 140139085Srvb cp = make_coda_node(&VFid, dvp->v_mount, attr.va_type); 140238625Srvb *vpp = CTOV(cp); 140338625Srvb 140438625Srvb /* Update va to reflect the new attributes. */ 140538625Srvb (*va) = attr; 140638625Srvb 140738625Srvb /* Update the attribute cache and mark it as valid */ 140839085Srvb if (coda_attr_cache) { 140938625Srvb VTOC(*vpp)->c_vattr = attr; 141038625Srvb VTOC(*vpp)->c_flags |= C_VATTR; 141138625Srvb } 141238625Srvb 141338625Srvb /* Invalidate the parent's attr cache, the modification time has changed */ 141438625Srvb VTOC(dvp)->c_flags &= ~C_VATTR; 141538625Srvb 141638625Srvb /* enter the new vnode in the Name Cache */ 141739085Srvb coda_nc_enter(VTOC(dvp), nm, len, cred, VTOC(*vpp)); 141838625Srvb 141939085Srvb CODADEBUG(CODA_CREATE, 142038625Srvb myprintf(("create: (%lx.%lx.%lx), result %d\n", 142138625Srvb VFid.Volume, VFid.Vnode, VFid.Unique, error)); ) 142238625Srvb } else { 142338625Srvb *vpp = (struct vnode *)0; 142439085Srvb CODADEBUG(CODA_CREATE, myprintf(("create error %d\n", error));) 142538625Srvb } 142638625Srvb 142738625Srvb if (!error) { 142838625Srvb if (cnp->cn_flags & LOCKLEAF) { 142938759Srvb if ((error = VOP_LOCK(*ap->a_vpp, LK_EXCLUSIVE, p))) { 143039085Srvb printf("coda_create: "); 143138625Srvb panic("unlocked parent but couldn't lock child"); 143238625Srvb } 143338625Srvb } 143439650Srvb#ifdef OLD_DIAGNOSTIC 143538625Srvb else { 143639085Srvb printf("coda_create: LOCKLEAF not set!\n"); 143738625Srvb } 143839650Srvb#endif 143938625Srvb } 144038625Srvb /* Have to free the previously saved name */ 144138625Srvb /* 144238625Srvb * This condition is stolen from ufs_makeinode. I have no idea 144338625Srvb * why it's here, but what the hey... 144438625Srvb */ 144538625Srvb if ((cnp->cn_flags & SAVESTART) == 0) { 144638759Srvb zfree(namei_zone, cnp->cn_pnbuf); 144738625Srvb } 144838625Srvb return(error); 144938625Srvb} 145038625Srvb 145138625Srvbint 145239085Srvbcoda_remove(v) 145338625Srvb void *v; 145438625Srvb{ 145538625Srvb/* true args */ 145638625Srvb struct vop_remove_args *ap = v; 145738625Srvb struct vnode *dvp = ap->a_dvp; 145838625Srvb struct cnode *cp = VTOC(dvp); 145938625Srvb struct componentname *cnp = ap->a_cnp; 146038625Srvb struct ucred *cred = cnp->cn_cred; 146138625Srvb struct proc *p = cnp->cn_proc; 146238625Srvb/* locals */ 146338625Srvb int error; 146438625Srvb const char *nm = cnp->cn_nameptr; 146538625Srvb int len = cnp->cn_namelen; 146638625Srvb struct cnode *tp; 146738625Srvb 146839085Srvb MARK_ENTRY(CODA_REMOVE_STATS); 146938625Srvb 147039085Srvb CODADEBUG(CODA_REMOVE, myprintf(("remove: %s in %lx.%lx.%lx\n", 147138625Srvb nm, cp->c_fid.Volume, cp->c_fid.Vnode, 147238625Srvb cp->c_fid.Unique));); 147338625Srvb 147439085Srvb /* Remove the file's entry from the CODA Name Cache */ 147538625Srvb /* We're being conservative here, it might be that this person 147638625Srvb * doesn't really have sufficient access to delete the file 147738625Srvb * but we feel zapping the entry won't really hurt anyone -- dcs 147838625Srvb */ 147938625Srvb /* I'm gonna go out on a limb here. If a file and a hardlink to it 148038625Srvb * exist, and one is removed, the link count on the other will be 148138625Srvb * off by 1. We could either invalidate the attrs if cached, or 148238625Srvb * fix them. I'll try to fix them. DCS 11/8/94 148338625Srvb */ 148439085Srvb tp = coda_nc_lookup(VTOC(dvp), nm, len, cred); 148538625Srvb if (tp) { 148638625Srvb if (VALID_VATTR(tp)) { /* If attrs are cached */ 148738625Srvb if (tp->c_vattr.va_nlink > 1) { /* If it's a hard link */ 148838625Srvb tp->c_vattr.va_nlink--; 148938625Srvb } 149038625Srvb } 149138625Srvb 149239085Srvb coda_nc_zapfile(VTOC(dvp), nm, len); 149338625Srvb /* No need to flush it if it doesn't exist! */ 149438625Srvb } 149538625Srvb /* Invalidate the parent's attr cache, the modification time has changed */ 149638625Srvb VTOC(dvp)->c_flags &= ~C_VATTR; 149738625Srvb 149838625Srvb /* Check for remove of control object. */ 149938625Srvb if (IS_CTL_NAME(dvp, nm, len)) { 150039085Srvb MARK_INT_FAIL(CODA_REMOVE_STATS); 150138625Srvb return(ENOENT); 150238625Srvb } 150338625Srvb 150438625Srvb error = venus_remove(vtomi(dvp), &cp->c_fid, nm, len, cred, p); 150538625Srvb 150639085Srvb CODADEBUG(CODA_REMOVE, myprintf(("in remove result %d\n",error)); ) 150738625Srvb 150838625Srvb if ((cnp->cn_flags & SAVESTART) == 0) { 150938759Srvb zfree(namei_zone, cnp->cn_pnbuf); 151038625Srvb } 151138625Srvb return(error); 151238625Srvb} 151338625Srvb 151438625Srvbint 151539085Srvbcoda_link(v) 151638625Srvb void *v; 151738625Srvb{ 151838625Srvb/* true args */ 151938625Srvb struct vop_link_args *ap = v; 152038625Srvb struct vnode *vp = ap->a_vp; 152138625Srvb struct cnode *cp = VTOC(vp); 152238625Srvb struct vnode *tdvp = ap->a_tdvp; 152338625Srvb struct cnode *tdcp = VTOC(tdvp); 152438625Srvb struct componentname *cnp = ap->a_cnp; 152538625Srvb struct ucred *cred = cnp->cn_cred; 152638625Srvb struct proc *p = cnp->cn_proc; 152738625Srvb/* locals */ 152838625Srvb int error; 152938625Srvb const char *nm = cnp->cn_nameptr; 153038625Srvb int len = cnp->cn_namelen; 153138625Srvb 153239085Srvb MARK_ENTRY(CODA_LINK_STATS); 153338625Srvb 153439085Srvb if (codadebug & CODADBGMSK(CODA_LINK)) { 153538625Srvb 153638625Srvb myprintf(("nb_link: vp fid: (%lx.%lx.%lx)\n", 153738625Srvb cp->c_fid.Volume, cp->c_fid.Vnode, cp->c_fid.Unique)); 153838625Srvb myprintf(("nb_link: tdvp fid: (%lx.%lx.%lx)\n", 153938625Srvb tdcp->c_fid.Volume, tdcp->c_fid.Vnode, tdcp->c_fid.Unique)); 154038625Srvb 154138625Srvb } 154239085Srvb if (codadebug & CODADBGMSK(CODA_LINK)) { 154338625Srvb myprintf(("link: vp fid: (%lx.%lx.%lx)\n", 154438625Srvb cp->c_fid.Volume, cp->c_fid.Vnode, cp->c_fid.Unique)); 154538625Srvb myprintf(("link: tdvp fid: (%lx.%lx.%lx)\n", 154638625Srvb tdcp->c_fid.Volume, tdcp->c_fid.Vnode, tdcp->c_fid.Unique)); 154738625Srvb 154838625Srvb } 154938625Srvb 155038625Srvb /* Check for link to/from control object. */ 155138625Srvb if (IS_CTL_NAME(tdvp, nm, len) || IS_CTL_VP(vp)) { 155239085Srvb MARK_INT_FAIL(CODA_LINK_STATS); 155338625Srvb return(EACCES); 155438625Srvb } 155538625Srvb 155638625Srvb error = venus_link(vtomi(vp), &cp->c_fid, &tdcp->c_fid, nm, len, cred, p); 155738625Srvb 155838625Srvb /* Invalidate the parent's attr cache, the modification time has changed */ 155938625Srvb VTOC(tdvp)->c_flags &= ~C_VATTR; 156038625Srvb VTOC(vp)->c_flags &= ~C_VATTR; 156138625Srvb 156239085Srvb CODADEBUG(CODA_LINK, myprintf(("in link result %d\n",error)); ) 156338625Srvb 156438625Srvb /* Drop the name buffer if we don't need to SAVESTART */ 156538625Srvb if ((cnp->cn_flags & SAVESTART) == 0) { 156638759Srvb zfree(namei_zone, cnp->cn_pnbuf); 156738625Srvb } 156838625Srvb return(error); 156938625Srvb} 157038625Srvb 157138625Srvbint 157239085Srvbcoda_rename(v) 157338625Srvb void *v; 157438625Srvb{ 157538625Srvb/* true args */ 157638625Srvb struct vop_rename_args *ap = v; 157738625Srvb struct vnode *odvp = ap->a_fdvp; 157838625Srvb struct cnode *odcp = VTOC(odvp); 157938625Srvb struct componentname *fcnp = ap->a_fcnp; 158038625Srvb struct vnode *ndvp = ap->a_tdvp; 158138625Srvb struct cnode *ndcp = VTOC(ndvp); 158238625Srvb struct componentname *tcnp = ap->a_tcnp; 158338625Srvb struct ucred *cred = fcnp->cn_cred; 158438625Srvb struct proc *p = fcnp->cn_proc; 158538625Srvb/* true args */ 158638625Srvb int error; 158738625Srvb const char *fnm = fcnp->cn_nameptr; 158838625Srvb int flen = fcnp->cn_namelen; 158938625Srvb const char *tnm = tcnp->cn_nameptr; 159038625Srvb int tlen = tcnp->cn_namelen; 159138625Srvb 159239085Srvb MARK_ENTRY(CODA_RENAME_STATS); 159338625Srvb 159438625Srvb /* Hmmm. The vnodes are already looked up. Perhaps they are locked? 159538625Srvb This could be Bad. XXX */ 159639650Srvb#ifdef OLD_DIAGNOSTIC 159738625Srvb if ((fcnp->cn_cred != tcnp->cn_cred) 159838625Srvb || (fcnp->cn_proc != tcnp->cn_proc)) 159938625Srvb { 160039085Srvb panic("coda_rename: component names don't agree"); 160138625Srvb } 160239650Srvb#endif 160338625Srvb 160438625Srvb /* Check for rename involving control object. */ 160538625Srvb if (IS_CTL_NAME(odvp, fnm, flen) || IS_CTL_NAME(ndvp, tnm, tlen)) { 160639085Srvb MARK_INT_FAIL(CODA_RENAME_STATS); 160738625Srvb return(EACCES); 160838625Srvb } 160938625Srvb 161038625Srvb /* Problem with moving directories -- need to flush entry for .. */ 161138625Srvb if (odvp != ndvp) { 161239085Srvb struct cnode *ovcp = coda_nc_lookup(VTOC(odvp), fnm, flen, cred); 161338625Srvb if (ovcp) { 161438625Srvb struct vnode *ovp = CTOV(ovcp); 161538625Srvb if ((ovp) && 161638625Srvb (ovp->v_type == VDIR)) /* If it's a directory */ 161739085Srvb coda_nc_zapfile(VTOC(ovp),"..", 2); 161838625Srvb } 161938625Srvb } 162038625Srvb 162138625Srvb /* Remove the entries for both source and target files */ 162239085Srvb coda_nc_zapfile(VTOC(odvp), fnm, flen); 162339085Srvb coda_nc_zapfile(VTOC(ndvp), tnm, tlen); 162438625Srvb 162538625Srvb /* Invalidate the parent's attr cache, the modification time has changed */ 162638625Srvb VTOC(odvp)->c_flags &= ~C_VATTR; 162738625Srvb VTOC(ndvp)->c_flags &= ~C_VATTR; 162838625Srvb 162939085Srvb if (flen+1 > CODA_MAXNAMLEN) { 163039085Srvb MARK_INT_FAIL(CODA_RENAME_STATS); 163138625Srvb error = EINVAL; 163238625Srvb goto exit; 163338625Srvb } 163438625Srvb 163539085Srvb if (tlen+1 > CODA_MAXNAMLEN) { 163639085Srvb MARK_INT_FAIL(CODA_RENAME_STATS); 163738625Srvb error = EINVAL; 163838625Srvb goto exit; 163938625Srvb } 164038625Srvb 164138625Srvb error = venus_rename(vtomi(odvp), &odcp->c_fid, &ndcp->c_fid, fnm, flen, tnm, tlen, cred, p); 164238625Srvb 164338625Srvb exit: 164439085Srvb CODADEBUG(CODA_RENAME, myprintf(("in rename result %d\n",error));) 164538625Srvb /* XXX - do we need to call cache pureg on the moved vnode? */ 164638625Srvb cache_purge(ap->a_fvp); 164738625Srvb 164838625Srvb /* It seems to be incumbent on us to drop locks on all four vnodes */ 164938625Srvb /* From-vnodes are not locked, only ref'd. To-vnodes are locked. */ 165038625Srvb 165138625Srvb vrele(ap->a_fvp); 165238625Srvb vrele(odvp); 165338625Srvb 165438625Srvb if (ap->a_tvp) { 165538625Srvb if (ap->a_tvp == ndvp) { 165638625Srvb vrele(ap->a_tvp); 165738625Srvb } else { 165838625Srvb vput(ap->a_tvp); 165938625Srvb } 166038625Srvb } 166138625Srvb 166238625Srvb vput(ndvp); 166338625Srvb return(error); 166438625Srvb} 166538625Srvb 166638625Srvbint 166739085Srvbcoda_mkdir(v) 166838625Srvb void *v; 166938625Srvb{ 167038625Srvb/* true args */ 167138625Srvb struct vop_mkdir_args *ap = v; 167238625Srvb struct vnode *dvp = ap->a_dvp; 167338625Srvb struct cnode *dcp = VTOC(dvp); 167438625Srvb struct componentname *cnp = ap->a_cnp; 167538625Srvb register struct vattr *va = ap->a_vap; 167638625Srvb struct vnode **vpp = ap->a_vpp; 167738625Srvb struct ucred *cred = cnp->cn_cred; 167838625Srvb struct proc *p = cnp->cn_proc; 167938625Srvb/* locals */ 168038625Srvb int error; 168138625Srvb const char *nm = cnp->cn_nameptr; 168238625Srvb int len = cnp->cn_namelen; 168338625Srvb struct cnode *cp; 168438625Srvb ViceFid VFid; 168538625Srvb struct vattr ova; 168638625Srvb 168739085Srvb MARK_ENTRY(CODA_MKDIR_STATS); 168838625Srvb 168938625Srvb /* Check for mkdir of target object. */ 169038625Srvb if (IS_CTL_NAME(dvp, nm, len)) { 169138625Srvb *vpp = (struct vnode *)0; 169239085Srvb MARK_INT_FAIL(CODA_MKDIR_STATS); 169338625Srvb return(EACCES); 169438625Srvb } 169538625Srvb 169639085Srvb if (len+1 > CODA_MAXNAMLEN) { 169738625Srvb *vpp = (struct vnode *)0; 169839085Srvb MARK_INT_FAIL(CODA_MKDIR_STATS); 169938625Srvb return(EACCES); 170038625Srvb } 170138625Srvb 170238625Srvb error = venus_mkdir(vtomi(dvp), &dcp->c_fid, nm, len, va, cred, p, &VFid, &ova); 170338625Srvb 170438625Srvb if (!error) { 170539085Srvb if (coda_find(&VFid) != NULL) 170638625Srvb panic("cnode existed for newly created directory!"); 170738625Srvb 170838625Srvb 170939085Srvb cp = make_coda_node(&VFid, dvp->v_mount, va->va_type); 171038625Srvb *vpp = CTOV(cp); 171138625Srvb 171238625Srvb /* enter the new vnode in the Name Cache */ 171339085Srvb coda_nc_enter(VTOC(dvp), nm, len, cred, VTOC(*vpp)); 171438625Srvb 171538625Srvb /* as a side effect, enter "." and ".." for the directory */ 171639085Srvb coda_nc_enter(VTOC(*vpp), ".", 1, cred, VTOC(*vpp)); 171739085Srvb coda_nc_enter(VTOC(*vpp), "..", 2, cred, VTOC(dvp)); 171838625Srvb 171939085Srvb if (coda_attr_cache) { 172038625Srvb VTOC(*vpp)->c_vattr = ova; /* update the attr cache */ 172138625Srvb VTOC(*vpp)->c_flags |= C_VATTR; /* Valid attributes in cnode */ 172238625Srvb } 172338625Srvb 172438625Srvb /* Invalidate the parent's attr cache, the modification time has changed */ 172538625Srvb VTOC(dvp)->c_flags &= ~C_VATTR; 172638625Srvb 172739085Srvb CODADEBUG( CODA_MKDIR, myprintf(("mkdir: (%lx.%lx.%lx) result %d\n", 172838625Srvb VFid.Volume, VFid.Vnode, VFid.Unique, error)); ) 172938625Srvb } else { 173038625Srvb *vpp = (struct vnode *)0; 173139085Srvb CODADEBUG(CODA_MKDIR, myprintf(("mkdir error %d\n",error));) 173238625Srvb } 173338625Srvb 173438625Srvb /* Have to free the previously saved name */ 173538625Srvb /* 173638625Srvb * ufs_mkdir doesn't check for SAVESTART before freeing the 173738625Srvb * pathname buffer, but ufs_create does. For the moment, I'll 173838625Srvb * follow their lead, but this seems like it is probably 173938625Srvb * incorrect. 174038625Srvb */ 174138759Srvb zfree(namei_zone, cnp->cn_pnbuf); 174238625Srvb return(error); 174338625Srvb} 174438625Srvb 174538625Srvbint 174639085Srvbcoda_rmdir(v) 174738625Srvb void *v; 174838625Srvb{ 174938625Srvb/* true args */ 175038625Srvb struct vop_rmdir_args *ap = v; 175138625Srvb struct vnode *dvp = ap->a_dvp; 175238625Srvb struct cnode *dcp = VTOC(dvp); 175338625Srvb struct componentname *cnp = ap->a_cnp; 175438625Srvb struct ucred *cred = cnp->cn_cred; 175538625Srvb struct proc *p = cnp->cn_proc; 175638625Srvb/* true args */ 175738625Srvb int error; 175838625Srvb const char *nm = cnp->cn_nameptr; 175938625Srvb int len = cnp->cn_namelen; 176038625Srvb struct cnode *cp; 176138625Srvb 176239085Srvb MARK_ENTRY(CODA_RMDIR_STATS); 176338625Srvb 176438625Srvb /* Check for rmdir of control object. */ 176538625Srvb if (IS_CTL_NAME(dvp, nm, len)) { 176639085Srvb MARK_INT_FAIL(CODA_RMDIR_STATS); 176738625Srvb return(ENOENT); 176838625Srvb } 176938625Srvb 177038625Srvb /* We're being conservative here, it might be that this person 177138625Srvb * doesn't really have sufficient access to delete the file 177238625Srvb * but we feel zapping the entry won't really hurt anyone -- dcs 177338625Srvb */ 177438625Srvb /* 177538625Srvb * As a side effect of the rmdir, remove any entries for children of 177638625Srvb * the directory, especially "." and "..". 177738625Srvb */ 177839085Srvb cp = coda_nc_lookup(dcp, nm, len, cred); 177939085Srvb if (cp) coda_nc_zapParentfid(&(cp->c_fid), NOT_DOWNCALL); 178038625Srvb 178139085Srvb /* Remove the file's entry from the CODA Name Cache */ 178239085Srvb coda_nc_zapfile(dcp, nm, len); 178338625Srvb 178438625Srvb /* Invalidate the parent's attr cache, the modification time has changed */ 178538625Srvb dcp->c_flags &= ~C_VATTR; 178638625Srvb 178738625Srvb error = venus_rmdir(vtomi(dvp), &dcp->c_fid, nm, len, cred, p); 178838625Srvb 178939085Srvb CODADEBUG(CODA_RMDIR, myprintf(("in rmdir result %d\n", error)); ) 179038625Srvb 179138625Srvb if ((cnp->cn_flags & SAVESTART) == 0) { 179238759Srvb zfree(namei_zone, cnp->cn_pnbuf); 179338625Srvb } 179438625Srvb return(error); 179538625Srvb} 179638625Srvb 179738625Srvbint 179839085Srvbcoda_symlink(v) 179938625Srvb void *v; 180038625Srvb{ 180138625Srvb/* true args */ 180238625Srvb struct vop_symlink_args *ap = v; 180338625Srvb struct vnode *tdvp = ap->a_dvp; 180438625Srvb struct cnode *tdcp = VTOC(tdvp); 180538625Srvb struct componentname *cnp = ap->a_cnp; 180638625Srvb struct vattr *tva = ap->a_vap; 180738625Srvb char *path = ap->a_target; 180838625Srvb struct ucred *cred = cnp->cn_cred; 180938625Srvb struct proc *p = cnp->cn_proc; 181038625Srvb/* locals */ 181138625Srvb int error; 181238625Srvb /* 181339085Srvb * XXX I'm assuming the following things about coda_symlink's 181438625Srvb * arguments: 181538625Srvb * t(foo) is the new name/parent/etc being created. 181638625Srvb * lname is the contents of the new symlink. 181738625Srvb */ 181838759Srvb char *nm = cnp->cn_nameptr; 181938625Srvb int len = cnp->cn_namelen; 182038625Srvb int plen = strlen(path); 182138625Srvb 182238625Srvb /* XXX What about the vpp argument? Do we need it? */ 182338625Srvb /* 182438625Srvb * Here's the strategy for the moment: perform the symlink, then 182538625Srvb * do a lookup to grab the resulting vnode. I know this requires 182638625Srvb * two communications with Venus for a new sybolic link, but 182738625Srvb * that's the way the ball bounces. I don't yet want to change 182838625Srvb * the way the Mach symlink works. When Mach support is 182938625Srvb * deprecated, we should change symlink so that the common case 183038625Srvb * returns the resultant vnode in a vpp argument. 183138625Srvb */ 183238625Srvb 183339085Srvb MARK_ENTRY(CODA_SYMLINK_STATS); 183438625Srvb 183538625Srvb /* Check for symlink of control object. */ 183638625Srvb if (IS_CTL_NAME(tdvp, nm, len)) { 183739085Srvb MARK_INT_FAIL(CODA_SYMLINK_STATS); 183838625Srvb return(EACCES); 183938625Srvb } 184038625Srvb 184139085Srvb if (plen+1 > CODA_MAXPATHLEN) { 184239085Srvb MARK_INT_FAIL(CODA_SYMLINK_STATS); 184338625Srvb return(EINVAL); 184438625Srvb } 184538625Srvb 184639085Srvb if (len+1 > CODA_MAXNAMLEN) { 184739085Srvb MARK_INT_FAIL(CODA_SYMLINK_STATS); 184838625Srvb error = EINVAL; 184938625Srvb goto exit; 185038625Srvb } 185138625Srvb 185238625Srvb error = venus_symlink(vtomi(tdvp), &tdcp->c_fid, path, plen, nm, len, tva, cred, p); 185338625Srvb 185438625Srvb /* Invalidate the parent's attr cache, the modification time has changed */ 185538625Srvb tdcp->c_flags &= ~C_VATTR; 185638625Srvb 185738625Srvb /* 185838625Srvb * Free the name buffer 185938625Srvb */ 186038625Srvb if ((cnp->cn_flags & SAVESTART) == 0) { 186138759Srvb zfree(namei_zone, cnp->cn_pnbuf); 186238625Srvb } 186338625Srvb 186438625Srvb exit: 186539085Srvb CODADEBUG(CODA_SYMLINK, myprintf(("in symlink result %d\n",error)); ) 186638625Srvb return(error); 186738625Srvb} 186838625Srvb 186938625Srvb/* 187038625Srvb * Read directory entries. 187138625Srvb */ 187238625Srvbint 187339085Srvbcoda_readdir(v) 187438625Srvb void *v; 187538625Srvb{ 187638625Srvb/* true args */ 187738625Srvb struct vop_readdir_args *ap = v; 187838625Srvb struct vnode *vp = ap->a_vp; 187938625Srvb struct cnode *cp = VTOC(vp); 188038625Srvb register struct uio *uiop = ap->a_uio; 188138625Srvb struct ucred *cred = ap->a_cred; 188238625Srvb int *eofflag = ap->a_eofflag; 188338625Srvb u_long **cookies = ap->a_cookies; 188438625Srvb int *ncookies = ap->a_ncookies; 188538625Srvb struct proc *p = ap->a_uio->uio_procp; 188638625Srvb/* upcall decl */ 188738625Srvb/* locals */ 188838625Srvb int error = 0; 188938625Srvb 189039085Srvb MARK_ENTRY(CODA_READDIR_STATS); 189138625Srvb 189239085Srvb CODADEBUG(CODA_READDIR, myprintf(("coda_readdir(%p, %d, %qd, %d)\n", uiop->uio_iov->iov_base, uiop->uio_resid, uiop->uio_offset, uiop->uio_segflg)); ) 189338625Srvb 189438625Srvb /* Check for readdir of control object. */ 189538625Srvb if (IS_CTL_VP(vp)) { 189639085Srvb MARK_INT_FAIL(CODA_READDIR_STATS); 189738625Srvb return(ENOENT); 189838625Srvb } 189938625Srvb 190038759Srvb { 190138625Srvb /* If directory is not already open do an "internal open" on it. */ 190238625Srvb int opened_internally = 0; 190338625Srvb if (cp->c_ovp == NULL) { 190438625Srvb opened_internally = 1; 190539085Srvb MARK_INT_GEN(CODA_OPEN_STATS); 190638625Srvb error = VOP_OPEN(vp, FREAD, cred, p); 190739085Srvbprintf("coda_readdir: Internally Opening %p\n", vp); 190838625Srvb if (error) { 190939085Srvb printf("coda_readdir: VOP_OPEN on container failed %d\n", error); 191038625Srvb return (error); 191138625Srvb } 191238625Srvb if (vp->v_type == VREG) { 191342315Seivind error = vfs_object_create(vp, p, cred); 191438625Srvb if (error != 0) { 191539085Srvb printf("coda_readdir: vfs_object_create() returns %d\n", error); 191638625Srvb vput(vp); 191738625Srvb } 191838625Srvb } 191938625Srvb if (error) return(error); 192038625Srvb } 192138625Srvb 192238625Srvb /* Have UFS handle the call. */ 192339085Srvb 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)); ) 192438625Srvb error = VOP_READDIR(cp->c_ovp, uiop, cred, eofflag, ncookies, 192538625Srvb cookies); 192638625Srvb 192738625Srvb if (error) 192839085Srvb MARK_INT_FAIL(CODA_READDIR_STATS); 192938625Srvb else 193039085Srvb MARK_INT_SAT(CODA_READDIR_STATS); 193138625Srvb 193238625Srvb /* Do an "internal close" if necessary. */ 193338625Srvb if (opened_internally) { 193439085Srvb MARK_INT_GEN(CODA_CLOSE_STATS); 193538625Srvb (void)VOP_CLOSE(vp, FREAD, cred, p); 193638625Srvb } 193738625Srvb } 193838625Srvb 193938625Srvb return(error); 194038625Srvb} 194138625Srvb 194238625Srvb/* 194338625Srvb * Convert from file system blocks to device blocks 194438625Srvb */ 194538625Srvbint 194639085Srvbcoda_bmap(v) 194738625Srvb void *v; 194838625Srvb{ 194938625Srvb /* XXX on the global proc */ 195038625Srvb/* true args */ 195138625Srvb struct vop_bmap_args *ap = v; 195238625Srvb struct vnode *vp __attribute__((unused)) = ap->a_vp; /* file's vnode */ 195338625Srvb daddr_t bn __attribute__((unused)) = ap->a_bn; /* fs block number */ 195438625Srvb struct vnode **vpp = ap->a_vpp; /* RETURN vp of device */ 195538625Srvb daddr_t *bnp __attribute__((unused)) = ap->a_bnp; /* RETURN device block number */ 195638625Srvb struct proc *p __attribute__((unused)) = curproc; 195738625Srvb/* upcall decl */ 195838625Srvb/* locals */ 195938625Srvb 196038625Srvb int ret = 0; 196138625Srvb struct cnode *cp; 196238625Srvb 196338625Srvb cp = VTOC(vp); 196438625Srvb if (cp->c_ovp) { 196539728Srvb return EINVAL; 196638625Srvb ret = VOP_BMAP(cp->c_ovp, bn, vpp, bnp, ap->a_runp, ap->a_runb); 196739650Srvb#if 0 196838625Srvb printf("VOP_BMAP(cp->c_ovp %p, bn %p, vpp %p, bnp %p, ap->a_runp %p, ap->a_runb %p) = %d\n", 196938625Srvb cp->c_ovp, bn, vpp, bnp, ap->a_runp, ap->a_runb, ret); 197039650Srvb#endif 197138625Srvb return ret; 197238625Srvb } else { 197341504Srvb#if 0 197439085Srvb printf("coda_bmap: no container\n"); 197541504Srvb#endif 197638625Srvb return(EOPNOTSUPP); 197738625Srvb } 197838625Srvb} 197938625Srvb 198038625Srvb/* 198138625Srvb * I don't think the following two things are used anywhere, so I've 198238625Srvb * commented them out 198338625Srvb * 198438625Srvb * struct buf *async_bufhead; 198538625Srvb * int async_daemon_count; 198638625Srvb */ 198738625Srvbint 198839085Srvbcoda_strategy(v) 198938625Srvb void *v; 199038625Srvb{ 199138625Srvb/* true args */ 199238625Srvb struct vop_strategy_args *ap = v; 199338625Srvb register struct buf *bp __attribute__((unused)) = ap->a_bp; 199438625Srvb struct proc *p __attribute__((unused)) = curproc; 199538625Srvb/* upcall decl */ 199638625Srvb/* locals */ 199738625Srvb 199839085Srvb printf("coda_strategy: called ???\n"); 199938625Srvb return(EOPNOTSUPP); 200038625Srvb} 200138625Srvb 200238625Srvbint 200339085Srvbcoda_reclaim(v) 200438625Srvb void *v; 200538625Srvb{ 200638625Srvb/* true args */ 200738625Srvb struct vop_reclaim_args *ap = v; 200838625Srvb struct vnode *vp = ap->a_vp; 200938625Srvb struct cnode *cp = VTOC(vp); 201038625Srvb/* upcall decl */ 201138625Srvb/* locals */ 201238625Srvb 201338625Srvb/* 201438625Srvb * Forced unmount/flush will let vnodes with non zero use be destroyed! 201538625Srvb */ 201638625Srvb ENTRY; 201738625Srvb 201838625Srvb if (IS_UNMOUNTING(cp)) { 201938625Srvb#ifdef DEBUG 202038625Srvb if (VTOC(vp)->c_ovp) { 202138625Srvb if (IS_UNMOUNTING(cp)) 202239085Srvb printf("coda_reclaim: c_ovp not void: vp %p, cp %p\n", vp, cp); 202338625Srvb } 202438625Srvb#endif 202538625Srvb } else { 202639650Srvb#ifdef OLD_DIAGNOSTIC 202738625Srvb if (vp->v_usecount != 0) 202839650Srvb print("coda_reclaim: pushing active %p\n", vp); 202938625Srvb if (VTOC(vp)->c_ovp) { 203039085Srvb panic("coda_reclaim: c_ovp not void"); 203138625Srvb } 203239650Srvb#endif 203338625Srvb } 203438625Srvb cache_purge(vp); 203539085Srvb coda_free(VTOC(vp)); 203638625Srvb VTOC(vp) = NULL; 203738625Srvb return (0); 203838625Srvb} 203938625Srvb 204038625Srvbint 204139085Srvbcoda_lock(v) 204238625Srvb void *v; 204338625Srvb{ 204438625Srvb/* true args */ 204538625Srvb struct vop_lock_args *ap = v; 204638625Srvb struct vnode *vp = ap->a_vp; 204738625Srvb struct cnode *cp = VTOC(vp); 204838625Srvb struct proc *p = ap->a_p; 204938625Srvb/* upcall decl */ 205038625Srvb/* locals */ 205138625Srvb 205238625Srvb ENTRY; 205338625Srvb 205439085Srvb if (coda_lockdebug) { 205538625Srvb myprintf(("Attempting lock on %lx.%lx.%lx\n", 205638625Srvb cp->c_fid.Volume, cp->c_fid.Vnode, cp->c_fid.Unique)); 205738625Srvb } 205838625Srvb 205942900Seivind#ifndef DEBUG_LOCKS 206038759Srvb return (lockmgr(&cp->c_lock, ap->a_flags, &vp->v_interlock, p)); 206142900Seivind#else 206242900Seivind return (debuglockmgr(&cp->c_lock, ap->a_flags, &vp->v_interlock, p, 206342900Seivind "coda_lock", vp->filename, vp->line)); 206442900Seivind#endif 206538625Srvb} 206638625Srvb 206738625Srvbint 206839085Srvbcoda_unlock(v) 206938625Srvb void *v; 207038625Srvb{ 207138625Srvb/* true args */ 207238625Srvb struct vop_unlock_args *ap = v; 207338625Srvb struct vnode *vp = ap->a_vp; 207438625Srvb struct cnode *cp = VTOC(vp); 207538625Srvb struct proc *p = ap->a_p; 207638625Srvb/* upcall decl */ 207738625Srvb/* locals */ 207838625Srvb 207938625Srvb ENTRY; 208039085Srvb if (coda_lockdebug) { 208138625Srvb myprintf(("Attempting unlock on %lx.%lx.%lx\n", 208238625Srvb cp->c_fid.Volume, cp->c_fid.Vnode, cp->c_fid.Unique)); 208338625Srvb } 208438625Srvb 208538759Srvb return (lockmgr(&cp->c_lock, ap->a_flags | LK_RELEASE, &vp->v_interlock, p)); 208638625Srvb} 208738625Srvb 208838625Srvbint 208939085Srvbcoda_islocked(v) 209038625Srvb void *v; 209138625Srvb{ 209238625Srvb/* true args */ 209338625Srvb struct vop_islocked_args *ap = v; 209438625Srvb struct cnode *cp = VTOC(ap->a_vp); 209538625Srvb ENTRY; 209638625Srvb 209738625Srvb return (lockstatus(&cp->c_lock)); 209838625Srvb} 209938625Srvb 210038625Srvb/* How one looks up a vnode given a device/inode pair: */ 210138625Srvbint 210239085Srvbcoda_grab_vnode(dev_t dev, ino_t ino, struct vnode **vpp) 210338625Srvb{ 210438625Srvb /* This is like VFS_VGET() or igetinode()! */ 210538625Srvb int error; 210638625Srvb struct mount *mp; 210738625Srvb 210838625Srvb if (!(mp = devtomp(dev))) { 210939085Srvb myprintf(("coda_grab_vnode: devtomp(%d) returns NULL\n", dev)); 211038625Srvb return(ENXIO); 211138625Srvb } 211238625Srvb 211338625Srvb /* XXX - ensure that nonzero-return means failure */ 211438625Srvb error = VFS_VGET(mp,ino,vpp); 211538625Srvb if (error) { 211639085Srvb myprintf(("coda_grab_vnode: iget/vget(%d, %d) returns %p, err %d\n", 211738625Srvb dev, ino, *vpp, error)); 211838625Srvb return(ENOENT); 211938625Srvb } 212038625Srvb return(0); 212138625Srvb} 212238625Srvb 212338625Srvbvoid 212438625Srvbprint_vattr( attr ) 212538625Srvb struct vattr *attr; 212638625Srvb{ 212738625Srvb char *typestr; 212838625Srvb 212938625Srvb switch (attr->va_type) { 213038625Srvb case VNON: 213138625Srvb typestr = "VNON"; 213238625Srvb break; 213338625Srvb case VREG: 213438625Srvb typestr = "VREG"; 213538625Srvb break; 213638625Srvb case VDIR: 213738625Srvb typestr = "VDIR"; 213838625Srvb break; 213938625Srvb case VBLK: 214038625Srvb typestr = "VBLK"; 214138625Srvb break; 214238625Srvb case VCHR: 214338625Srvb typestr = "VCHR"; 214438625Srvb break; 214538625Srvb case VLNK: 214638625Srvb typestr = "VLNK"; 214738625Srvb break; 214838625Srvb case VSOCK: 214938625Srvb typestr = "VSCK"; 215038625Srvb break; 215138625Srvb case VFIFO: 215238625Srvb typestr = "VFFO"; 215338625Srvb break; 215438625Srvb case VBAD: 215538625Srvb typestr = "VBAD"; 215638625Srvb break; 215738625Srvb default: 215838625Srvb typestr = "????"; 215938625Srvb break; 216038625Srvb } 216138625Srvb 216238625Srvb 216338625Srvb myprintf(("attr: type %s mode %d uid %d gid %d fsid %d rdev %d\n", 216438625Srvb typestr, (int)attr->va_mode, (int)attr->va_uid, 216538625Srvb (int)attr->va_gid, (int)attr->va_fsid, (int)attr->va_rdev)); 216638625Srvb 216738625Srvb myprintf((" fileid %d nlink %d size %d blocksize %d bytes %d\n", 216838625Srvb (int)attr->va_fileid, (int)attr->va_nlink, 216938625Srvb (int)attr->va_size, 217038625Srvb (int)attr->va_blocksize,(int)attr->va_bytes)); 217138625Srvb myprintf((" gen %ld flags %ld vaflags %d\n", 217238625Srvb attr->va_gen, attr->va_flags, attr->va_vaflags)); 217338625Srvb myprintf((" atime sec %d nsec %d\n", 217438625Srvb (int)attr->va_atime.tv_sec, (int)attr->va_atime.tv_nsec)); 217538625Srvb myprintf((" mtime sec %d nsec %d\n", 217638625Srvb (int)attr->va_mtime.tv_sec, (int)attr->va_mtime.tv_nsec)); 217738625Srvb myprintf((" ctime sec %d nsec %d\n", 217838625Srvb (int)attr->va_ctime.tv_sec, (int)attr->va_ctime.tv_nsec)); 217938625Srvb} 218038625Srvb 218138625Srvb/* How to print a ucred */ 218238625Srvbvoid 218338625Srvbprint_cred(cred) 218438625Srvb struct ucred *cred; 218538625Srvb{ 218638625Srvb 218738625Srvb int i; 218838625Srvb 218938625Srvb myprintf(("ref %d\tuid %d\n",cred->cr_ref,cred->cr_uid)); 219038625Srvb 219138625Srvb for (i=0; i < cred->cr_ngroups; i++) 219238625Srvb myprintf(("\tgroup %d: (%d)\n",i,cred->cr_groups[i])); 219338625Srvb myprintf(("\n")); 219438625Srvb 219538625Srvb} 219638625Srvb 219738625Srvb/* 219838625Srvb * Return a vnode for the given fid. 219938625Srvb * If no cnode exists for this fid create one and put it 220038625Srvb * in a table hashed by fid.Volume and fid.Vnode. If the cnode for 220138625Srvb * this fid is already in the table return it (ref count is 220239085Srvb * incremented by coda_find. The cnode will be flushed from the 220339085Srvb * table when coda_inactive calls coda_unsave. 220438625Srvb */ 220538625Srvbstruct cnode * 220639085Srvbmake_coda_node(fid, vfsp, type) 220738625Srvb ViceFid *fid; struct mount *vfsp; short type; 220838625Srvb{ 220938625Srvb struct cnode *cp; 221038625Srvb int err; 221138625Srvb 221239085Srvb if ((cp = coda_find(fid)) == NULL) { 221338625Srvb struct vnode *vp; 221438625Srvb 221539085Srvb cp = coda_alloc(); 221638625Srvb lockinit(&cp->c_lock, PINOD, "cnode", 0, 0); 221738625Srvb cp->c_fid = *fid; 221838625Srvb 221939085Srvb err = getnewvnode(VT_CODA, vfsp, coda_vnodeop_p, &vp); 222038625Srvb if (err) { 222139085Srvb panic("coda: getnewvnode returned error %d\n", err); 222238625Srvb } 222338625Srvb vp->v_data = cp; 222438625Srvb vp->v_type = type; 222538625Srvb cp->c_vnode = vp; 222639085Srvb coda_save(cp); 222738625Srvb 222838625Srvb } else { 222938625Srvb vref(CTOV(cp)); 223038625Srvb } 223138625Srvb 223238625Srvb return cp; 223338625Srvb} 2234