--- /dev/null
+/*
+ * GPL HEADER START
+ *
+ * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License version 2 only,
+ * as published by the Free Software Foundation.
+ *
+ * This program is distributed in the hope that it will be useful, but
+ * WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
+ * General Public License version 2 for more details (a copy is included
+ * in the LICENSE file that accompanied this code).
+ *
+ * You should have received a copy of the GNU General Public License
+ * version 2 along with this program; If not, see
+ * http://www.sun.com/software/products/lustre/docs/GPLv2.pdf
+ *
+ * Please contact Sun Microsystems, Inc., 4150 Network Circle, Santa Clara,
+ * CA 95054 USA or visit www.sun.com if you need additional information or
+ * have any questions.
+ *
+ * GPL HEADER END
+ */
+/*
+ * Copyright (c) 2003, 2010, Oracle and/or its affiliates. All rights reserved.
+ * Use is subject to license terms.
+ *
+ * Copyright (c) 2012, Intel Corporation.
+ */
+/*
+ * This file is part of Lustre, http://www.lustre.org/
+ * Lustre is a trademark of Sun Microsystems, Inc.
+ */
+
+#ifndef _LUSTRE_CFG_H
+#define _LUSTRE_CFG_H
+
+/** \defgroup cfg cfg
+ *
+ * @{
+ */
+
+/*
+ * 1cf6
+ * lcfG
+ */
+#define LUSTRE_CFG_VERSION 0x1cf60001
+#define LUSTRE_CFG_MAX_BUFCOUNT 8
+
+#define LCFG_HDR_SIZE(count) \
+ cfs_size_round(offsetof (struct lustre_cfg, lcfg_buflens[(count)]))
+
+/** If the LCFG_REQUIRED bit is set in a configuration command,
+ * then the client is required to understand this parameter
+ * in order to mount the filesystem. If it does not understand
+ * a REQUIRED command the client mount will fail. */
+#define LCFG_REQUIRED 0x0001000
+
+enum lcfg_command_type {
+ LCFG_ATTACH = 0x00cf001, /**< create a new obd instance */
+ LCFG_DETACH = 0x00cf002, /**< destroy obd instance */
+ LCFG_SETUP = 0x00cf003, /**< call type-specific setup */
+ LCFG_CLEANUP = 0x00cf004, /**< call type-specific cleanup */
+ LCFG_ADD_UUID = 0x00cf005, /**< add a nid to a niduuid */
+ LCFG_DEL_UUID = 0x00cf006, /**< remove a nid from a niduuid */
+ LCFG_MOUNTOPT = 0x00cf007, /**< create a profile (mdc, osc) */
+ LCFG_DEL_MOUNTOPT = 0x00cf008, /**< destroy a profile */
+ LCFG_SET_TIMEOUT = 0x00cf009, /**< set obd_timeout */
+ LCFG_SET_UPCALL = 0x00cf00a, /**< deprecated */
+ LCFG_ADD_CONN = 0x00cf00b, /**< add a failover niduuid to an obd */
+ LCFG_DEL_CONN = 0x00cf00c, /**< remove a failover niduuid */
+ LCFG_LOV_ADD_OBD = 0x00cf00d, /**< add an osc to a lov */
+ LCFG_LOV_DEL_OBD = 0x00cf00e, /**< remove an osc from a lov */
+ LCFG_PARAM = 0x00cf00f, /**< set a proc parameter */
+ LCFG_MARKER = 0x00cf010, /**< metadata about next cfg rec */
+ LCFG_LOG_START = 0x00ce011, /**< mgc only, process a cfg log */
+ LCFG_LOG_END = 0x00ce012, /**< stop processing updates */
+ LCFG_LOV_ADD_INA = 0x00ce013, /**< like LOV_ADD_OBD, inactive */
+ LCFG_ADD_MDC = 0x00cf014, /**< add an mdc to a lmv */
+ LCFG_DEL_MDC = 0x00cf015, /**< remove an mdc from a lmv */
+ LCFG_SPTLRPC_CONF = 0x00ce016, /**< security */
+ LCFG_POOL_NEW = 0x00ce020, /**< create an ost pool name */
+ LCFG_POOL_ADD = 0x00ce021, /**< add an ost to a pool */
+ LCFG_POOL_REM = 0x00ce022, /**< remove an ost from a pool */
+ LCFG_POOL_DEL = 0x00ce023, /**< destroy an ost pool name */
+ LCFG_SET_LDLM_TIMEOUT = 0x00ce030, /**< set ldlm_timeout */
+ LCFG_PRE_CLEANUP = 0x00cf031, /**< call type-specific pre
+ * cleanup cleanup */
+ LCFG_SET_PARAM = 0x00ce032, /**< use set_param syntax to set
+ *a proc parameters */
+};
+
+struct lustre_cfg_bufs {
+ void *lcfg_buf[LUSTRE_CFG_MAX_BUFCOUNT];
+ __u32 lcfg_buflen[LUSTRE_CFG_MAX_BUFCOUNT];
+ __u32 lcfg_bufcount;
+};
+
+struct lustre_cfg {
+ __u32 lcfg_version;
+ __u32 lcfg_command;
+
+ __u32 lcfg_num;
+ __u32 lcfg_flags;
+ __u64 lcfg_nid;
+ __u32 lcfg_nal; /* not used any more */
+
+ __u32 lcfg_bufcount;
+ __u32 lcfg_buflens[0];
+};
+
+enum cfg_record_type {
+ PORTALS_CFG_TYPE = 1,
+ LUSTRE_CFG_TYPE = 123,
+};
+
+#define LUSTRE_CFG_BUFLEN(lcfg, idx) \
+ ((lcfg)->lcfg_bufcount <= (idx) \
+ ? 0 \
+ : (lcfg)->lcfg_buflens[(idx)])
+
+static inline void lustre_cfg_bufs_set(struct lustre_cfg_bufs *bufs,
+ __u32 index,
+ void *buf,
+ __u32 buflen)
+{
+ if (index >= LUSTRE_CFG_MAX_BUFCOUNT)
+ return;
+ if (bufs == NULL)
+ return;
+
+ if (bufs->lcfg_bufcount <= index)
+ bufs->lcfg_bufcount = index + 1;
+
+ bufs->lcfg_buf[index] = buf;
+ bufs->lcfg_buflen[index] = buflen;
+}
+
+static inline void lustre_cfg_bufs_set_string(struct lustre_cfg_bufs *bufs,
+ __u32 index,
+ char *str)
+{
+ lustre_cfg_bufs_set(bufs, index, str, str ? strlen(str) + 1 : 0);
+}
+
+static inline void lustre_cfg_bufs_reset(struct lustre_cfg_bufs *bufs, char *name)
+{
+ memset((bufs), 0, sizeof(*bufs));
+ if (name)
+ lustre_cfg_bufs_set_string(bufs, 0, name);
+}
+
+static inline void *lustre_cfg_buf(struct lustre_cfg *lcfg, int index)
+{
+ int i;
+ int offset;
+ int bufcount;
+ LASSERT (lcfg != NULL);
+ LASSERT (index >= 0);
+
+ bufcount = lcfg->lcfg_bufcount;
+ if (index >= bufcount)
+ return NULL;
+
+ offset = LCFG_HDR_SIZE(lcfg->lcfg_bufcount);
+ for (i = 0; i < index; i++)
+ offset += cfs_size_round(lcfg->lcfg_buflens[i]);
+ return (char *)lcfg + offset;
+}
+
+static inline void lustre_cfg_bufs_init(struct lustre_cfg_bufs *bufs,
+ struct lustre_cfg *lcfg)
+{
+ int i;
+ bufs->lcfg_bufcount = lcfg->lcfg_bufcount;
+ for (i = 0; i < bufs->lcfg_bufcount; i++) {
+ bufs->lcfg_buflen[i] = lcfg->lcfg_buflens[i];
+ bufs->lcfg_buf[i] = lustre_cfg_buf(lcfg, i);
+ }
+}
+
+static inline char *lustre_cfg_string(struct lustre_cfg *lcfg, int index)
+{
+ char *s;
+
+ if (lcfg->lcfg_buflens[index] == 0)
+ return NULL;
+
+ s = lustre_cfg_buf(lcfg, index);
+ if (s == NULL)
+ return NULL;
+
+ /*
+ * make sure it's NULL terminated, even if this kills a char
+ * of data. Try to use the padding first though.
+ */
+ if (s[lcfg->lcfg_buflens[index] - 1] != '\0') {
+ int last = min((int)lcfg->lcfg_buflens[index],
+ cfs_size_round(lcfg->lcfg_buflens[index]) - 1);
+ char lost = s[last];
+ s[last] = '\0';
+ if (lost != '\0') {
+ CWARN("Truncated buf %d to '%s' (lost '%c'...)\n",
+ index, s, lost);
+ }
+ }
+ return s;
+}
+
+static inline int lustre_cfg_len(__u32 bufcount, __u32 *buflens)
+{
+ int i;
+ int len;
+
+ len = LCFG_HDR_SIZE(bufcount);
+ for (i = 0; i < bufcount; i++)
+ len += cfs_size_round(buflens[i]);
+
+ return cfs_size_round(len);
+}
+
+
+#include "obd_support.h"
+
+static inline struct lustre_cfg *lustre_cfg_new(int cmd,
+ struct lustre_cfg_bufs *bufs)
+{
+ struct lustre_cfg *lcfg;
+ char *ptr;
+ int i;
+
+ OBD_ALLOC(lcfg, lustre_cfg_len(bufs->lcfg_bufcount,
+ bufs->lcfg_buflen));
+ if (!lcfg)
+ return ERR_PTR(-ENOMEM);
+
+ lcfg->lcfg_version = LUSTRE_CFG_VERSION;
+ lcfg->lcfg_command = cmd;
+ lcfg->lcfg_bufcount = bufs->lcfg_bufcount;
+
+ ptr = (char *)lcfg + LCFG_HDR_SIZE(lcfg->lcfg_bufcount);
+ for (i = 0; i < lcfg->lcfg_bufcount; i++) {
+ lcfg->lcfg_buflens[i] = bufs->lcfg_buflen[i];
+ LOGL((char *)bufs->lcfg_buf[i], bufs->lcfg_buflen[i], ptr);
+ }
+ return lcfg;
+}
+
+static inline void lustre_cfg_free(struct lustre_cfg *lcfg)
+{
+ int len;
+
+ len = lustre_cfg_len(lcfg->lcfg_bufcount, lcfg->lcfg_buflens);
+
+ OBD_FREE(lcfg, len);
+ return;
+}
+
+static inline int lustre_cfg_sanity_check(void *buf, int len)
+{
+ struct lustre_cfg *lcfg = (struct lustre_cfg *)buf;
+
+ if (!lcfg)
+ return -EINVAL;
+
+ /* check that the first bits of the struct are valid */
+ if (len < LCFG_HDR_SIZE(0))
+ return -EINVAL;
+
+ if (lcfg->lcfg_version != LUSTRE_CFG_VERSION)
+ return -EINVAL;
+
+ if (lcfg->lcfg_bufcount >= LUSTRE_CFG_MAX_BUFCOUNT)
+ return -EINVAL;
+
+ /* check that the buflens are valid */
+ if (len < LCFG_HDR_SIZE(lcfg->lcfg_bufcount))
+ return -EINVAL;
+
+ /* make sure all the pointers point inside the data */
+ if (len < lustre_cfg_len(lcfg->lcfg_bufcount, lcfg->lcfg_buflens))
+ return -EINVAL;
+
+ return 0;
+}
+
+#include "lustre/lustre_user.h"
+
+/** @} cfg */
+
+#endif /* _LUSTRE_CFG_H */
Code Review / kvmfornfv.git / blobdiff