/* -*- mode: c; c-basic-offset: 8; indent-tabs-mode: nil; -*- * vim:expandtab:shiftwidth=8:tabstop=8: * * Copyright (C) 2001 Cluster File Systems, Inc. * * This file is part of Lustre, http://www.lustre.org. * * Lustre is free software; you can redistribute it and/or * modify it under the terms of version 2 of the GNU General Public * License as published by the Free Software Foundation. * * Lustre 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 for more details. * * You should have received a copy of the GNU General Public License * along with Lustre; if not, write to the Free Software * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA. * */ #ifndef _LUSTRE_CFG_H #define _LUSTRE_CFG_H /* * 1cf6 * lcfG */ #define LUSTRE_CFG_VERSION 0x1cf60001 #define LUSTRE_CFG_MAX_BUFCOUNT 8 #define LCFG_HDR_SIZE(count) \ size_round(offsetof (struct lustre_cfg, lcfg_buflens[(count)])) /* If not LCFG_REQUIRED, we can ignore this cmd and go on. */ #define LCFG_REQUIRED 0x0001000 enum lcfg_command_type { LCFG_ATTACH = 0x00cf001, LCFG_DETACH = 0x00cf002, LCFG_SETUP = 0x00cf003, LCFG_CLEANUP = 0x00cf004, LCFG_ADD_UUID = 0x00cf005, LCFG_DEL_UUID = 0x00cf006, LCFG_MOUNTOPT = 0x00cf007, LCFG_DEL_MOUNTOPT = 0x00cf008, LCFG_SET_TIMEOUT = 0x00cf009, LCFG_SET_UPCALL = 0x00cf00a, LCFG_ADD_CONN = 0x00cf00b, LCFG_DEL_CONN = 0x00cf00c, LCFG_LOV_ADD_OBD = 0x00cf00d, LCFG_LOV_DEL_OBD = 0x00cf00e, LCFG_PARAM = 0x00cf00f, LCFG_MARKER = 0x00cf010, LCFG_LOG_START = 0x00ce011, LCFG_LOG_END = 0x00ce012, LCFG_LOV_ADD_INA = 0x00ce013, LCFG_ADD_MDC = 0x00cf014, LCFG_DEL_MDC = 0x00cf015, LCFG_SPTLRPC_CONF = 0x00ce016, }; struct lustre_cfg_bufs { void *lcfg_buf[LUSTRE_CFG_MAX_BUFCOUNT]; __u32 lcfg_buflen[LUSTRE_CFG_MAX_BUFCOUNT]; __u32 lcfg_bufcount; }; /* Mountconf transitional hack, should go away after 1.6 */ #define LCFG_FLG_MOUNTCONF 0x400 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]; }; #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 += 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]) return NULL; s = lustre_cfg_buf(lcfg, index); if (!s) 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], 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; ENTRY; len = LCFG_HDR_SIZE(bufcount); for (i = 0; i < bufcount; i++) len += size_round(buflens[i]); RETURN(size_round(len)); } #include static inline struct lustre_cfg *lustre_cfg_new(int cmd, struct lustre_cfg_bufs *bufs) { struct lustre_cfg *lcfg; char *ptr; int i; ENTRY; OBD_ALLOC(lcfg, lustre_cfg_len(bufs->lcfg_bufcount, bufs->lcfg_buflen)); if (!lcfg) RETURN(lcfg); 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); EXIT; return; } static inline int lustre_cfg_sanity_check(void *buf, int len) { struct lustre_cfg *lcfg = (struct lustre_cfg *)buf; ENTRY; 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 #define INVALID_UID (-1) #endif // _LUSTRE_CFG_H