4 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
6 * This program is free software; you can redistribute it and/or modify
7 * it under the terms of the GNU General Public License version 2 only,
8 * as published by the Free Software Foundation.
10 * This program is distributed in the hope that it will be useful, but
11 * WITHOUT ANY WARRANTY; without even the implied warranty of
12 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
13 * General Public License version 2 for more details (a copy is included
14 * in the LICENSE file that accompanied this code).
16 * You should have received a copy of the GNU General Public License
17 * version 2 along with this program; If not, see
18 * http://www.sun.com/software/products/lustre/docs/GPLv2.pdf
20 * Please contact Sun Microsystems, Inc., 4150 Network Circle, Santa Clara,
21 * CA 95054 USA or visit www.sun.com if you need additional information or
27 * Copyright (c) 2003, 2010, Oracle and/or its affiliates. All rights reserved.
28 * Use is subject to license terms.
30 * Copyright (c) 2013, Intel Corporation.
33 * This file is part of Lustre, http://www.lustre.org/
34 * Lustre is a trademark of Sun Microsystems, Inc.
36 * lustre/utils/obdiolib.c
38 * Author: Eric Barton <eeb@clusterfs.com>
46 #include <sys/ioctl.h>
47 #include <sys/types.h>
50 #include <liblustre.h>
54 obdio_iocinit (struct obdio_conn *conn)
56 memset (&conn->oc_data, 0, sizeof (conn->oc_data));
57 conn->oc_data.ioc_version = OBD_IOCTL_VERSION;
58 conn->oc_data.ioc_dev = conn->oc_device;
59 conn->oc_data.ioc_len = sizeof (conn->oc_data);
63 obdio_ioctl (struct obdio_conn *conn, int cmd)
65 char *buf = conn->oc_buffer;
69 rc = obd_ioctl_pack (&conn->oc_data, &buf, sizeof (conn->oc_buffer));
71 fprintf(stderr, "%s: obd_ioctl_pack: %d (%s)\n",
72 __FUNCTION__, rc, strerror(errno));
76 rc = ioctl (conn->oc_fd, cmd, buf);
80 rc2 = obd_ioctl_unpack (&conn->oc_data, buf, sizeof (conn->oc_buffer));
82 fprintf(stderr, "%s: obd_ioctl_unpack: %d (%s)\n",
83 __FUNCTION__, rc2, strerror(errno));
91 obdio_connect (int device)
93 struct obdio_conn *conn;
95 conn = malloc (sizeof (*conn));
97 fprintf (stderr, "%s: no memory\n", __FUNCTION__);
100 memset (conn, 0, sizeof (*conn));
102 conn->oc_fd = open ("/dev/obd", O_RDWR);
103 if (conn->oc_fd < 0) {
104 fprintf(stderr, "%s: Can't open /dev/obd: %s\n",
105 __FUNCTION__, strerror(errno));
109 conn->oc_device = device;
118 obdio_disconnect (struct obdio_conn *conn, int flags)
121 /* obdclass will automatically close on last ref */
126 obdio_pread (struct obdio_conn *conn, __u64 oid,
127 void *buffer, __u32 count, __u64 offset)
129 obdio_iocinit (conn);
131 ostid_set_id(&conn->oc_data.ioc_obdo1.o_oi, oid);
132 conn->oc_data.ioc_obdo1.o_mode = S_IFREG;
133 conn->oc_data.ioc_obdo1.o_valid =
134 OBD_MD_FLID | OBD_MD_FLTYPE | OBD_MD_FLMODE;
136 conn->oc_data.ioc_pbuf2 = buffer;
137 conn->oc_data.ioc_plen2 = count;
138 conn->oc_data.ioc_count = count;
139 conn->oc_data.ioc_offset = offset;
141 return (obdio_ioctl (conn, OBD_IOC_BRW_READ));
145 obdio_pwrite (struct obdio_conn *conn, __u64 oid,
146 void *buffer, __u32 count, __u64 offset)
148 obdio_iocinit (conn);
150 ostid_set_id(&conn->oc_data.ioc_obdo1.o_oi, oid);
151 conn->oc_data.ioc_obdo1.o_mode = S_IFREG;
152 conn->oc_data.ioc_obdo1.o_valid =
153 OBD_MD_FLID | OBD_MD_FLTYPE | OBD_MD_FLMODE;
155 conn->oc_data.ioc_pbuf1 = (void*)1;
156 conn->oc_data.ioc_plen1 = 1;
157 conn->oc_data.ioc_pbuf2 = buffer;
158 conn->oc_data.ioc_plen2 = count;
159 conn->oc_data.ioc_count = count;
160 conn->oc_data.ioc_offset = offset;
162 return (obdio_ioctl (conn, OBD_IOC_BRW_WRITE));
166 obdio_enqueue (struct obdio_conn *conn, __u64 oid,
167 int mode, __u64 offset, __u32 count,
168 struct lustre_handle *lh)
172 obdio_iocinit (conn);
174 ostid_set_id(&conn->oc_data.ioc_obdo1.o_oi, oid);
175 conn->oc_data.ioc_obdo1.o_mode = S_IFREG;
176 conn->oc_data.ioc_obdo1.o_valid =
177 OBD_MD_FLID | OBD_MD_FLTYPE | OBD_MD_FLMODE;
179 conn->oc_data.ioc_conn1 = mode;
180 conn->oc_data.ioc_count = count;
181 conn->oc_data.ioc_offset = offset;
183 rc = obdio_ioctl (conn, ECHO_IOC_ENQUEUE);
186 *lh = conn->oc_data.ioc_obdo1.o_handle;
192 obdio_cancel (struct obdio_conn *conn, struct lustre_handle *lh)
194 obdio_iocinit (conn);
196 conn->oc_data.ioc_obdo1.o_handle = *lh;
197 conn->oc_data.ioc_obdo1.o_valid = OBD_MD_FLHANDLE;
199 return (obdio_ioctl (conn, ECHO_IOC_CANCEL));
203 obdio_alloc_aligned_buffer (void **spacep, int size)
205 int pagemask = getpagesize() - 1;
206 void *space = malloc(size + pagemask);
211 *spacep = (void *)(((unsigned long)space + pagemask) & ~pagemask);
215 struct obdio_barrier *
216 obdio_new_barrier (__u64 oid, __u64 id, int npeers)
218 struct obdio_barrier *b;
220 b = malloc(sizeof(*b));
222 fprintf(stderr, "%s "LPX64": Can't allocate\n",
229 b->ob_npeers = npeers;
236 obdio_setup_barrier (struct obdio_conn *conn, struct obdio_barrier *b)
238 struct lustre_handle lh;
241 void *space, *fileptr;
242 struct obdio_barrier *fileb;
244 if (b->ob_ordinal != 0 ||
246 fprintf(stderr, "%s: invalid parameter\n", __FUNCTION__);
250 space = obdio_alloc_aligned_buffer(&fileptr, getpagesize());
252 fprintf(stderr, "%s "LPX64": Can't allocate page buffer\n",
253 __FUNCTION__, b->ob_oid);
258 memset(fileb, 0, getpagesize());
261 rc = obdio_enqueue(conn, b->ob_oid, LCK_PW, 0, getpagesize(), &lh);
263 fprintf(stderr, "%s "LPX64": Error on enqueue: %s\n",
264 __FUNCTION__, b->ob_oid, strerror(errno));
268 rc = obdio_pwrite(conn, b->ob_oid, fileb, getpagesize(), 0);
270 fprintf(stderr, "%s "LPX64": Error on write: %s\n",
271 __FUNCTION__, b->ob_oid, strerror(errno));
273 rc2 = obdio_cancel (conn, &lh);
274 if (rc == 0 && rc2 != 0) {
275 fprintf(stderr, "%s "LPX64": Error on cancel: %s\n",
276 __FUNCTION__, b->ob_oid, strerror(errno));
285 obdio_barrier (struct obdio_conn *conn, struct obdio_barrier *b)
287 struct lustre_handle lh;
290 void *space, *fileptr;
291 struct obdio_barrier *fileb;
294 space = obdio_alloc_aligned_buffer(&fileptr, getpagesize());
296 fprintf(stderr, "%s "LPX64": Can't allocate page buffer\n",
297 __FUNCTION__, b->ob_oid);
301 rc = obdio_enqueue(conn, b->ob_oid, LCK_PW, 0, getpagesize(), &lh);
303 fprintf(stderr, "%s "LPX64": Error on PW enqueue: %s\n",
304 __FUNCTION__, b->ob_oid, strerror(errno));
309 memset(fileb, 0xeb, getpagesize());
310 rc = obdio_pread(conn, b->ob_oid, fileb, getpagesize(), 0);
312 fprintf(stderr, "%s "LPX64": Error on initial read: %s\n",
313 __FUNCTION__, b->ob_oid, strerror(errno));
317 if (fileb->ob_id != b->ob_id ||
318 fileb->ob_oid != b->ob_oid ||
319 fileb->ob_npeers != b->ob_npeers ||
320 fileb->ob_count >= b->ob_npeers ||
321 fileb->ob_ordinal != b->ob_ordinal) {
322 fprintf(stderr, "%s "LPX64": corrupt on initial read\n",
323 __FUNCTION__, b->ob_id);
325 " got ["LPX64","LPX64","LPX64","LPX64","LPX64"]\n",
326 fileb->ob_id, fileb->ob_oid, fileb->ob_npeers,
327 fileb->ob_ordinal, fileb->ob_count);
329 " expected ["LPX64","LPX64","LPX64","LPX64","LPX64"]\n",
330 b->ob_id, b->ob_oid, b->ob_npeers,
331 b->ob_ordinal, b->ob_count);
337 if (fileb->ob_count == fileb->ob_npeers) { /* I'm the last joiner */
338 fileb->ob_count = 0; /* join count for next barrier */
339 fileb->ob_ordinal++; /* signal all joined */
342 rc = obdio_pwrite(conn, b->ob_oid, fileb, getpagesize(), 0);
344 fprintf (stderr, "%s "LPX64": Error on initial write: %s\n",
345 __FUNCTION__, b->ob_oid, strerror(errno));
350 b->ob_ordinal++; /* now I wait... */
351 while (fileb->ob_ordinal != b->ob_ordinal) {
352 rc = obdio_cancel (conn, &lh);
354 fprintf(stderr, "%s "LPX64": Error on %s cancel: %s\n",
355 __FUNCTION__, b->ob_oid, mode, strerror(errno));
360 rc = obdio_enqueue(conn, b->ob_oid, LCK_PR,0,getpagesize(),&lh);
362 fprintf(stderr, "%s "LPX64": Error on PR enqueue: %s\n",
363 __FUNCTION__, b->ob_oid, strerror(errno));
367 memset (fileb, 0xeb, getpagesize());
368 rc = obdio_pread(conn, b->ob_oid, fileb, getpagesize(), 0);
370 fprintf(stderr, "%s "LPX64": Error on read: %s\n",
371 __FUNCTION__, b->ob_oid, strerror(errno));
375 if (fileb->ob_id != b->ob_id ||
376 fileb->ob_oid != b->ob_oid ||
377 fileb->ob_npeers != b->ob_npeers ||
378 fileb->ob_count >= b->ob_npeers ||
379 (fileb->ob_ordinal != b->ob_ordinal - 1 &&
380 fileb->ob_ordinal != b->ob_ordinal)) {
381 fprintf(stderr, "%s "LPX64": corrupt\n",
382 __FUNCTION__, b->ob_id);
383 fprintf(stderr, " got ["LPX64","LPX64","LPX64","
385 fileb->ob_id, fileb->ob_oid, fileb->ob_npeers,
386 fileb->ob_ordinal, fileb->ob_count);
387 fprintf(stderr, " expected ["LPX64","LPX64","LPX64
388 ","LPX64","LPX64"]\n",
389 b->ob_id, b->ob_oid, b->ob_npeers,
390 b->ob_ordinal, b->ob_count);
397 rc2 = obdio_cancel (conn, &lh);
398 if (rc == 0 && rc2 != 0) {
399 fprintf(stderr, "%s "LPX64": Error on cancel: %s\n",
400 __FUNCTION__, b->ob_oid, strerror(errno));