4 * The contents of this file are subject to the terms of the
5 * Common Development and Distribution License (the "License").
6 * You may not use this file except in compliance with the License.
7 *
8 * You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE
9 * or http://www.opensolaris.org/os/licensing.
10 * See the License for the specific language governing permissions
11 * and limitations under the License.
12 *
13 * When distributing Covered Code, include this CDDL HEADER in each
14 * file and include the License file at usr/src/OPENSOLARIS.LICENSE.
15 * If applicable, add the following below this CDDL HEADER, with the
16 * fields enclosed by brackets "[]" replaced with your own identifying
17 * information: Portions Copyright [yyyy] [name of copyright owner]
18 *
19 * CDDL HEADER END
20 */
21 /*
22 * Copyright (c) 2005, 2010, Oracle and/or its affiliates. All rights reserved.
23 * Copyright (c) 2011, 2015 by Delphix. All rights reserved.
24 */
25
26 #include <sys/zfs_context.h>
27 #include <sys/spa.h>
28 #include <sys/spa_impl.h>
29 #include <sys/vdev_file.h>
30 #include <sys/vdev_impl.h>
31 #include <sys/zio.h>
32 #include <sys/fs/zfs.h>
33 #include <sys/fm/fs/zfs.h>
34 #include <sys/abd.h>
35
36 /*
37 * Virtual device vector for files.
38 */
39
40 static void
41 vdev_file_hold(vdev_t *vd)
42 {
43 ASSERT(vd->vdev_path != NULL);
44 }
45
46 static void
47 vdev_file_rele(vdev_t *vd)
48 {
49 ASSERT(vd->vdev_path != NULL);
50 }
51
52 static int
53 vdev_file_open(vdev_t *vd, uint64_t *psize, uint64_t *max_psize,
109 /*
110 * Determine the physical size of the file.
111 */
112 vattr.va_mask = AT_SIZE;
113 error = VOP_GETATTR(vf->vf_vnode, &vattr, 0, kcred, NULL);
114 if (error) {
115 vd->vdev_stat.vs_aux = VDEV_AUX_OPEN_FAILED;
116 return (error);
117 }
118
119 *max_psize = *psize = vattr.va_size;
120 *ashift = SPA_MINBLOCKSHIFT;
121
122 return (0);
123 }
124
125 static void
126 vdev_file_close(vdev_t *vd)
127 {
128 vdev_file_t *vf = vd->vdev_tsd;
129
130 if (vd->vdev_reopening || vf == NULL)
131 return;
132
133 if (vf->vf_vnode != NULL) {
134 (void) VOP_PUTPAGE(vf->vf_vnode, 0, 0, B_INVAL, kcred, NULL);
135 (void) VOP_CLOSE(vf->vf_vnode, spa_mode(vd->vdev_spa), 1, 0,
136 kcred, NULL);
137 VN_RELE(vf->vf_vnode);
138 }
139
140 vd->vdev_delayed_close = B_FALSE;
141 kmem_free(vf, sizeof (vdev_file_t));
142 vd->vdev_tsd = NULL;
143 }
144
145 /*
146 * Implements the interrupt side for file vdev types. This routine will be
147 * called when the I/O completes allowing us to transfer the I/O to the
148 * interrupt taskqs. For consistency, the code structure mimics disk vdev
149 * types.
150 */
151 static void
152 vdev_file_io_intr(buf_t *bp)
153 {
154 vdev_buf_t *vb = (vdev_buf_t *)bp;
155 zio_t *zio = vb->vb_io;
156
193 vdev_file_io_start(zio_t *zio)
194 {
195 vdev_t *vd = zio->io_vd;
196 vdev_file_t *vf = vd->vdev_tsd;
197 vdev_buf_t *vb;
198 buf_t *bp;
199
200 if (zio->io_type == ZIO_TYPE_IOCTL) {
201 /* XXPOLICY */
202 if (!vdev_readable(vd)) {
203 zio->io_error = SET_ERROR(ENXIO);
204 zio_interrupt(zio);
205 return;
206 }
207
208 switch (zio->io_cmd) {
209 case DKIOCFLUSHWRITECACHE:
210 zio->io_error = VOP_FSYNC(vf->vf_vnode, FSYNC | FDSYNC,
211 kcred, NULL);
212 break;
213 default:
214 zio->io_error = SET_ERROR(ENOTSUP);
215 }
216
217 zio_execute(zio);
218 return;
219 }
220
221 ASSERT(zio->io_type == ZIO_TYPE_READ || zio->io_type == ZIO_TYPE_WRITE);
222 zio->io_target_timestamp = zio_handle_io_delay(zio);
223
224 vb = kmem_alloc(sizeof (vdev_buf_t), KM_SLEEP);
225
226 vb->vb_io = zio;
227 bp = &vb->vb_buf;
228
229 bioinit(bp);
230 bp->b_flags = (zio->io_type == ZIO_TYPE_READ ? B_READ : B_WRITE);
231 bp->b_bcount = zio->io_size;
232
|
4 * The contents of this file are subject to the terms of the
5 * Common Development and Distribution License (the "License").
6 * You may not use this file except in compliance with the License.
7 *
8 * You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE
9 * or http://www.opensolaris.org/os/licensing.
10 * See the License for the specific language governing permissions
11 * and limitations under the License.
12 *
13 * When distributing Covered Code, include this CDDL HEADER in each
14 * file and include the License file at usr/src/OPENSOLARIS.LICENSE.
15 * If applicable, add the following below this CDDL HEADER, with the
16 * fields enclosed by brackets "[]" replaced with your own identifying
17 * information: Portions Copyright [yyyy] [name of copyright owner]
18 *
19 * CDDL HEADER END
20 */
21 /*
22 * Copyright (c) 2005, 2010, Oracle and/or its affiliates. All rights reserved.
23 * Copyright (c) 2011, 2015 by Delphix. All rights reserved.
24 * Copyright 2015 Nexenta Systems, Inc. All rights reserved.
25 */
26
27 #include <sys/zfs_context.h>
28 #include <sys/spa.h>
29 #include <sys/spa_impl.h>
30 #include <sys/vdev_file.h>
31 #include <sys/vdev_impl.h>
32 #include <sys/zio.h>
33 #include <sys/fs/zfs.h>
34 #include <sys/fm/fs/zfs.h>
35 #include <sys/fcntl.h>
36 #include <sys/vnode.h>
37 #include <sys/dkioc_free_util.h>
38 #include <sys/abd.h>
39
40 /*
41 * Virtual device vector for files.
42 */
43
44 static void
45 vdev_file_hold(vdev_t *vd)
46 {
47 ASSERT(vd->vdev_path != NULL);
48 }
49
50 static void
51 vdev_file_rele(vdev_t *vd)
52 {
53 ASSERT(vd->vdev_path != NULL);
54 }
55
56 static int
57 vdev_file_open(vdev_t *vd, uint64_t *psize, uint64_t *max_psize,
113 /*
114 * Determine the physical size of the file.
115 */
116 vattr.va_mask = AT_SIZE;
117 error = VOP_GETATTR(vf->vf_vnode, &vattr, 0, kcred, NULL);
118 if (error) {
119 vd->vdev_stat.vs_aux = VDEV_AUX_OPEN_FAILED;
120 return (error);
121 }
122
123 *max_psize = *psize = vattr.va_size;
124 *ashift = SPA_MINBLOCKSHIFT;
125
126 return (0);
127 }
128
129 static void
130 vdev_file_close(vdev_t *vd)
131 {
132 vdev_file_t *vf = vd->vdev_tsd;
133 caller_context_t ct = {0};
134
135 if (vd->vdev_reopening || vf == NULL)
136 return;
137
138 if (vf->vf_vnode != NULL) {
139 (void) VOP_PUTPAGE(vf->vf_vnode, 0, 0, B_INVAL, kcred, NULL);
140 /*
141 * We need to supply caller context with PID zero to fop_close
142 * in order to clean properly a share reservation which might
143 * have been created by vdev_file_open if nbmand was "on" for
144 * underlaying filesystem. Mismatched PIDs in create and delete
145 * reservation calls would lead to orphaned reservation.
146 */
147 (void) VOP_CLOSE(vf->vf_vnode, spa_mode(vd->vdev_spa), 1, 0,
148 kcred, &ct);
149 VN_RELE(vf->vf_vnode);
150 }
151
152 vd->vdev_delayed_close = B_FALSE;
153 kmem_free(vf, sizeof (vdev_file_t));
154 vd->vdev_tsd = NULL;
155 }
156
157 /*
158 * Implements the interrupt side for file vdev types. This routine will be
159 * called when the I/O completes allowing us to transfer the I/O to the
160 * interrupt taskqs. For consistency, the code structure mimics disk vdev
161 * types.
162 */
163 static void
164 vdev_file_io_intr(buf_t *bp)
165 {
166 vdev_buf_t *vb = (vdev_buf_t *)bp;
167 zio_t *zio = vb->vb_io;
168
205 vdev_file_io_start(zio_t *zio)
206 {
207 vdev_t *vd = zio->io_vd;
208 vdev_file_t *vf = vd->vdev_tsd;
209 vdev_buf_t *vb;
210 buf_t *bp;
211
212 if (zio->io_type == ZIO_TYPE_IOCTL) {
213 /* XXPOLICY */
214 if (!vdev_readable(vd)) {
215 zio->io_error = SET_ERROR(ENXIO);
216 zio_interrupt(zio);
217 return;
218 }
219
220 switch (zio->io_cmd) {
221 case DKIOCFLUSHWRITECACHE:
222 zio->io_error = VOP_FSYNC(vf->vf_vnode, FSYNC | FDSYNC,
223 kcred, NULL);
224 break;
225 case DKIOCFREE:
226 {
227 dkioc_free_list_t *dfl = zio->io_private;
228
229 ASSERT(dfl != NULL);
230 for (int i = 0; i < dfl->dfl_num_exts; i++) {
231 struct flock64 flck;
232 int error;
233
234 if (dfl->dfl_exts[i].dfle_length == 0)
235 continue;
236
237 bzero(&flck, sizeof (flck));
238 flck.l_type = F_FREESP;
239 flck.l_start = dfl->dfl_exts[i].dfle_start +
240 dfl->dfl_offset;
241 flck.l_len = dfl->dfl_exts[i].dfle_length;
242
243 error = VOP_SPACE(vf->vf_vnode,
244 F_FREESP, &flck, 0, 0, kcred, NULL);
245 if (error != 0) {
246 zio->io_error = SET_ERROR(error);
247 break;
248 }
249 }
250 break;
251 }
252 default:
253 zio->io_error = SET_ERROR(ENOTSUP);
254 }
255
256 zio_execute(zio);
257 return;
258 }
259
260 ASSERT(zio->io_type == ZIO_TYPE_READ || zio->io_type == ZIO_TYPE_WRITE);
261 zio->io_target_timestamp = zio_handle_io_delay(zio);
262
263 vb = kmem_alloc(sizeof (vdev_buf_t), KM_SLEEP);
264
265 vb->vb_io = zio;
266 bp = &vb->vb_buf;
267
268 bioinit(bp);
269 bp->b_flags = (zio->io_type == ZIO_TYPE_READ ? B_READ : B_WRITE);
270 bp->b_bcount = zio->io_size;
271
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