1/*
2 * Copyright (c) 2000-2003 Silicon Graphics, Inc.  All Rights Reserved.
3 *
4 * This program is free software; you can redistribute it and/or modify it
5 * under the terms of version 2 of the GNU General Public License as
6 * published by the Free Software Foundation.
7 *
8 * This program is distributed in the hope that it would be useful, but
9 * WITHOUT ANY WARRANTY; without even the implied warranty of
10 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
11 *
12 * Further, this software is distributed without any warranty that it is
13 * free of the rightful claim of any third person regarding infringement
14 * or the like.  Any license provided herein, whether implied or
15 * otherwise, applies only to this software file.  Patent licenses, if
16 * any, provided herein do not apply to combinations of this program with
17 * other software, or any other product whatsoever.
18 *
19 * You should have received a copy of the GNU General Public License along
20 * with this program; if not, write the Free Software Foundation, Inc., 59
21 * Temple Place - Suite 330, Boston MA 02111-1307, USA.
22 *
23 * Contact information: Silicon Graphics, Inc., 1600 Amphitheatre Pkwy,
24 * Mountain View, CA  94043, or:
25 *
26 * http://www.sgi.com
27 *
28 * For further information regarding this notice, see:
29 *
30 * http://oss.sgi.com/projects/GenInfo/SGIGPLNoticeExplan/
31 */
32
33#include "xfs.h"
34#include "xfs_types.h"
35#include "xfs_bit.h"
36#include "xfs_inum.h"
37#include "xfs_log.h"
38#include "xfs_trans.h"
39#include "xfs_trans_priv.h"
40#include "xfs_sb.h"
41#include "xfs_ag.h"
42#include "xfs_dir.h"
43#include "xfs_dir2.h"
44#include "xfs_dmapi.h"
45#include "xfs_mount.h"
46#include "xfs_alloc_btree.h"
47#include "xfs_bmap_btree.h"
48#include "xfs_ialloc_btree.h"
49#include "xfs_btree.h"
50#include "xfs_imap.h"
51#include "xfs_alloc.h"
52#include "xfs_attr_sf.h"
53#include "xfs_dir_sf.h"
54#include "xfs_dir2_sf.h"
55#include "xfs_dinode.h"
56#include "xfs_ialloc.h"
57#include "xfs_inode.h"
58#include "xfs_inode_item.h"
59
60void
61vn_init(void)
62{
63}
64
65void
66vn_iowait(
67	  struct xfs_vnode *vp)
68{
69	printf("vn_iowait doing nothing on FreeBSD?\n");
70}
71
72struct xfs_vnode *
73vn_initialize(
74	xfs_vnode_t	*vp)
75{
76	XFS_STATS_INC(vn_active);
77	XFS_STATS_INC(vn_alloc);
78
79	/* Initialize the first behavior and the behavior chain head. */
80	vn_bhv_head_init(VN_BHV_HEAD(vp), "vnode");
81
82#ifdef	CONFIG_XFS_VNODE_TRACING
83	vp->v_trace = ktrace_alloc(VNODE_TRACE_SIZE, KM_SLEEP);
84#endif	/* CONFIG_XFS_VNODE_TRACING */
85
86	vn_trace_exit(vp, "vn_initialize", (inst_t *)__return_address);
87	return vp;
88}
89
90/*
91 * Get a reference on a vnode. Need to drop vnode reference
92 * to accomodate for vhold by VMAP regardless of whether or
93 * not we were able to successfully grab the vnode.
94 */
95xfs_vnode_t *
96vn_get(
97	struct xfs_vnode	*xfs_vp,
98	vmap_t			*vmap)
99{
100	struct vnode *vp;
101	int error;
102
103	XFS_STATS_INC(vn_get);
104
105	vp = vmap->v_vp;
106
107	error = vget(vp, LK_EXCLUSIVE, curthread);
108	vdrop(vp);
109	if (error)
110		return (NULL);
111
112	/*
113	 * Drop the vnode returned by vget here.
114	 * VOP_RECLAIM(9) should block on internal XFS locks so that
115	 * the reclaiming scheme still remains consistent even if the
116	 * vp is not locked.
117	 */
118	VOP_UNLOCK(vp, 0);
119	if (vp->v_data != xfs_vp) {
120		vput(vp);
121		return (NULL);
122	}
123
124	vn_trace_exit(vp, "vn_get", (inst_t *)__return_address);
125	return xfs_vp;
126}
127
128/*
129 * purge a vnode from the cache
130 * At this point the vnode is guaranteed to have no references (vn_count == 0)
131 * The caller has to make sure that there are no ways someone could
132 * get a handle (via vn_get) on the vnode (usually done via a mount/vfs lock).
133 */
134void
135vn_purge(struct xfs_vnode        *xfs_vp)
136{
137        struct vnode *vp;
138
139        vn_trace_entry(vp, "vn_purge", (inst_t *)__return_address);
140
141        vp = xfs_vp->v_vnode;
142
143        vn_lock(vp, LK_EXCLUSIVE);
144	if (vp->v_holdcnt == 0)
145		vhold(vp);
146	vgone(vp);
147        VOP_UNLOCK(vp, 0);
148}
149
150void xfs_ichgtime(
151	xfs_inode_t	*ip,
152	int		flags)
153{
154	timespec_t  tv;
155
156	vfs_timestamp(&tv);
157	if (flags & XFS_ICHGTIME_MOD) {
158		ip->i_d.di_mtime.t_sec = (__int32_t)tv.tv_sec;
159		ip->i_d.di_mtime.t_nsec = (__int32_t)tv.tv_nsec;
160	}
161	if (flags & XFS_ICHGTIME_ACC) {
162		ip->i_d.di_atime.t_sec = (__int32_t)tv.tv_sec;
163		ip->i_d.di_atime.t_nsec = (__int32_t)tv.tv_nsec;
164	}
165	if (flags & XFS_ICHGTIME_CHG) {
166		ip->i_d.di_ctime.t_sec = (__int32_t)tv.tv_sec;
167		ip->i_d.di_ctime.t_nsec = (__int32_t)tv.tv_nsec;
168	}
169
170//printf ("xfs_ichgtime NI\n");
171
172}
173
174
175/*
176 * Bring the atime in the XFS inode uptodate.
177 * Used before logging the inode to disk or when the Linux inode goes away.
178 */
179
180/*
181 * It's unclear if we need this since this is for syncing the linux inode's atime
182 * to the xfs inode's atime.
183 * Since FreeBSD doesn't have atime in the vnode is there anything to really
184 * sync over?
185 * For now just make this a update atime call
186 */
187
188void
189xfs_synchronize_atime(
190	xfs_inode_t	*ip)
191{
192#if 0
193	xfs_vnode_t	*vp;
194#endif
195
196	timespec_t  tv;
197
198/* vfs_timestamp looks at the system time accuracy variable */
199	vfs_timestamp(&tv);
200#if 0
201	printf("xfs_synchronize_atime old (%d,%d) new (%d,%ld)\n",
202	       ip->i_d.di_atime.t_sec,
203	       ip->i_d.di_atime.t_nsec,
204	       tv.tv_sec,
205	       tv.tv_nsec);
206#endif
207
208	ip->i_d.di_atime.t_sec = (__int32_t)tv.tv_sec;
209	ip->i_d.di_atime.t_nsec = (__int32_t)tv.tv_nsec;
210}
211
212#ifdef RMC
213/*
214 * Extracting atime values in various formats
215 */
216void vn_atime_to_bstime(struct xfs_vnode *vp, xfs_bstime_t *bs_atime)
217{
218	bs_atime->tv_sec = vp->v_inode.i_atime.tv_sec;
219	bs_atime->tv_nsec = vp->v_inode.i_atime.tv_nsec;
220	printf("vn_atime_to_bstime NI\n");
221}
222#endif
223
224
225#ifdef	CONFIG_XFS_VNODE_TRACING
226
227#define KTRACE_ENTER(vp, vk, s, line, ra)			\
228	ktrace_enter(	(vp)->v_trace,				\
229/*  0 */		(void *)(__psint_t)(vk),		\
230/*  1 */		(void *)(s),				\
231/*  2 */		(void *)(__psint_t) line,		\
232/*  3 */		(void *)(vn_count(vp)), \
233/*  4 */		(void *)(ra),				\
234/*  5 */		(void *)(__psunsigned_t)(vp)->v_flag,	\
235/*  6 */		(void *)(__psint_t)smp_processor_id(),	\
236/*  7 */		(void *)(__psint_t)(current->pid),	\
237/*  8 */		(void *)__return_address,		\
238/*  9 */		0, 0, 0, 0, 0, 0, 0)
239
240/*
241 * Vnode tracing code.
242 */
243void
244vn_trace_entry(xfs_vnode_t *vp, char *func, inst_t *ra)
245{
246	KTRACE_ENTER(vp, VNODE_KTRACE_ENTRY, func, 0, ra);
247}
248
249void
250vn_trace_exit(xfs_vnode_t *vp, char *func, inst_t *ra)
251{
252	KTRACE_ENTER(vp, VNODE_KTRACE_EXIT, func, 0, ra);
253}
254
255void
256vn_trace_hold(xfs_vnode_t *vp, char *file, int line, inst_t *ra)
257{
258	KTRACE_ENTER(vp, VNODE_KTRACE_HOLD, file, line, ra);
259}
260
261void
262vn_trace_ref(xfs_vnode_t *vp, char *file, int line, inst_t *ra)
263{
264	KTRACE_ENTER(vp, VNODE_KTRACE_REF, file, line, ra);
265}
266
267void
268vn_trace_rele(xfs_vnode_t *vp, char *file, int line, inst_t *ra)
269{
270	KTRACE_ENTER(vp, VNODE_KTRACE_RELE, file, line, ra);
271}
272#endif	/* CONFIG_XFS_VNODE_TRACING */
273