自学教程：C++ GF_ASSERT函数代码示例

static intglusterd_mgmt_v3_unlock_send_resp (rpcsvc_request_t *req, int32_t status){        gd1_mgmt_v3_unlock_rsp          rsp   = {{0},};        int                             ret   = -1;        xlator_t                       *this  = NULL;        this = THIS;        GF_ASSERT (this);        GF_ASSERT (req);        rsp.op_ret = status;        if (rsp.op_ret)                rsp.op_errno = errno;        glusterd_get_uuid (&rsp.uuid);        ret = glusterd_submit_reply (req, &rsp, NULL, 0, NULL,                                     (xdrproc_t)xdr_gd1_mgmt_v3_unlock_rsp);        gf_log (this->name, GF_LOG_DEBUG,                "Responded to mgmt_v3 unlock, ret: %d", ret);        return ret;}

intget_checksum_for_path (char *path, uint32_t *checksum){        int     ret = -1;        int     fd = -1;        GF_ASSERT (path);        GF_ASSERT (checksum);        fd = open (path, O_RDWR);        if (fd == -1) {                gf_log (THIS->name, GF_LOG_ERROR, "Unable to open %s, errno: %d",                        path, errno);                goto out;        }        ret = get_checksum_for_file (fd, checksum);out:        if (fd != -1)                close (fd);        return ret;}

static intglusterd_syctasked_mgmt_v3_unlock (rpcsvc_request_t *req,                                  gd1_mgmt_v3_unlock_req *unlock_req,                                  glusterd_op_lock_ctx_t *ctx){        int32_t                         ret         = -1;        xlator_t                       *this        = NULL;        this = THIS;        GF_ASSERT (this);        GF_ASSERT (req);        GF_ASSERT (ctx);        /* Trying to release multiple mgmt_v3 locks */        ret = glusterd_multiple_mgmt_v3_unlock (ctx->dict, ctx->uuid);        if (ret) {                gf_log (this->name, GF_LOG_ERROR,                        "Failed to release mgmt_v3 locks for %s",                        uuid_utoa(ctx->uuid));        }        ret = glusterd_mgmt_v3_unlock_send_resp (req, ret);        gf_log (this->name, GF_LOG_TRACE, "Returning %d", ret);        return ret;}

int32_tgf_store_validate_key_value (char *storepath, char *key, char *val,                             gf_store_op_errno_t *op_errno){        int ret = 0;        GF_ASSERT (op_errno);        GF_ASSERT (storepath);        if ((key == NULL) && (val == NULL)) {                ret = -1;                gf_log ("", GF_LOG_ERROR, "Glusterd store may be corrupted, "                        "Invalid key and value (null) in %s", storepath);                *op_errno = GD_STORE_KEY_VALUE_NULL;        } else if (key == NULL) {                ret = -1;                gf_log ("", GF_LOG_ERROR, "Glusterd store may be corrupted, "                        "Invalid key (null) in %s", storepath);                *op_errno = GD_STORE_KEY_NULL;        } else if (val == NULL) {                ret = -1;                gf_log ("", GF_LOG_ERROR, "Glusterd store may be corrupted, "                        "Invalid value (null) for key %s in %s", key,                        storepath);                *op_errno = GD_STORE_VALUE_NULL;        } else {                ret = 0;                *op_errno = GD_STORE_SUCCESS;        }        return ret;}

static voidrunner_insert_arg (runner_t *runner, char *arg){        int i = 0;        GF_ASSERT (arg);        if (runner->runerr)                return;        for (i = 0; i < runner->argvlen; i++) {                if (runner->argv[i] == NULL)                        break;        }        GF_ASSERT (i < runner->argvlen);        if (i == runner->argvlen - 1) {                runner->argv = GF_REALLOC (runner->argv,                                           runner->argvlen * 2 * sizeof (*runner->argv));                if (!runner->argv) {                        runner->runerr = errno;                        return;                }                memset (/* "+" is aware of the type of its left side,                         * no need to multiply with type-size */                        runner->argv + runner->argvlen,                        0, runner->argvlen * sizeof (*runner->argv));                runner->argvlen *= 2;        }        runner->argv[i] = arg;}

static intglusterd_op_state_machine_mgmt_v3_unlock (rpcsvc_request_t *req,                                         gd1_mgmt_v3_unlock_req *lock_req,                                         glusterd_op_lock_ctx_t *ctx){        int32_t                           ret      = -1;        xlator_t                         *this     = NULL;        this = THIS;        GF_ASSERT (this);        GF_ASSERT (req);        ret = glusterd_op_sm_inject_event (GD_OP_EVENT_UNLOCK,                                           &lock_req->txn_id, ctx);        if (ret)                gf_msg (this->name, GF_LOG_ERROR, 0,                        GD_MSG_OP_EVENT_UNLOCK_FAIL,                        "Failed to inject event GD_OP_EVENT_UNLOCK");        glusterd_friend_sm ();        glusterd_op_sm ();        gf_msg_trace (this->name, 0, "Returning %d", ret);        return ret;}

intgf_store_lock (gf_store_handle_t *sh){        int                     ret;        GF_ASSERT (sh);        GF_ASSERT (sh->path);        GF_ASSERT (sh->locked == F_ULOCK);        sh->fd = open (sh->path, O_RDWR);        if (sh->fd == -1) {                gf_log ("", GF_LOG_ERROR, "Failed to open '%s': %s", sh->path,                        strerror (errno));                return -1;        }        ret = lockf (sh->fd, F_LOCK, 0);        if (ret)                gf_log ("", GF_LOG_ERROR, "Failed to gain lock on '%s': %s",                        sh->path, strerror (errno));        else                /* sh->locked is protected by the lockf(sh->fd) above */                sh->locked = F_LOCK;        return ret;}

static intglusterd_synctasked_mgmt_v3_lock (rpcsvc_request_t *req,                                gd1_mgmt_v3_lock_req *lock_req,                                glusterd_op_lock_ctx_t *ctx){        int32_t                         ret         = -1;        xlator_t                       *this        = NULL;        uint32_t                        op_errno    = 0;        this = THIS;        GF_ASSERT (this);        GF_ASSERT (req);        GF_ASSERT (ctx);        GF_ASSERT (ctx->dict);        /* Trying to acquire multiple mgmt_v3 locks */        ret = glusterd_multiple_mgmt_v3_lock (ctx->dict, ctx->uuid, &op_errno);        if (ret)                gf_msg (this->name, GF_LOG_ERROR, 0,                        GD_MSG_MGMTV3_LOCK_GET_FAIL,                        "Failed to acquire mgmt_v3 locks for %s",                         uuid_utoa (ctx->uuid));        ret = glusterd_mgmt_v3_lock_send_resp (req, ret, op_errno);        gf_msg_trace (this->name, 0, "Returning %d", ret);        return ret;}

void__gf_free (void *free_ptr){        size_t          req_size = 0;        char            *ptr = NULL;        uint32_t        type = 0;        xlator_t        *xl = NULL;        if (!gf_mem_acct_enable) {                FREE (free_ptr);                return;        }        if (!free_ptr)                return;        ptr = (char *)free_ptr - 8 - 4;        if (GF_MEM_HEADER_MAGIC != *(uint32_t *)ptr) {                //Possible corruption, assert here                GF_ASSERT (0);        }        *(uint32_t *)ptr = 0;        ptr = ptr - sizeof(xlator_t *);        memcpy (&xl, ptr, sizeof(xlator_t *));        if (!xl) {                //gf_free expects xl to be available                GF_ASSERT (0);        }        if (!xl->mem_acct.rec) {                ptr = (char *)free_ptr - GF_MEM_HEADER_SIZE;                goto free;        }        ptr = ptr - sizeof(size_t);        memcpy (&req_size, ptr, sizeof (size_t));        ptr = ptr - 4;        type = *(uint32_t *)ptr;        if (GF_MEM_TRAILER_MAGIC != *(uint32_t *)            ((char *)free_ptr + req_size)) {                // This points to a memory overrun                GF_ASSERT (0);        }        *(uint32_t *) ((char *)free_ptr + req_size) = 0;        LOCK (&xl->mem_acct.rec[type].lock);        {                xl->mem_acct.rec[type].size -= req_size;                xl->mem_acct.rec[type].num_allocs--;        }        UNLOCK (&xl->mem_acct.rec[type].lock);free:        FREE (ptr);}

void__gf_free (void *free_ptr){        size_t          req_size = 0;        char            *ptr = NULL;        uint32_t        type = 0;        xlator_t        *xl = NULL;        if (!THIS->ctx->mem_acct_enable) {                FREE (free_ptr);                return;        }        if (!free_ptr)                return;        ptr = (char *)free_ptr - 8 - 4;        //Possible corruption, assert here        GF_ASSERT (GF_MEM_HEADER_MAGIC == *(uint32_t *)ptr);        *(uint32_t *)ptr = 0;        ptr = ptr - sizeof(xlator_t *);        memcpy (&xl, ptr, sizeof(xlator_t *));        //gf_free expects xl to be available        GF_ASSERT (xl != NULL);        if (!xl->mem_acct.rec) {                ptr = (char *)free_ptr - GF_MEM_HEADER_SIZE;                goto free;        }        ptr = ptr - sizeof(size_t);        memcpy (&req_size, ptr, sizeof (size_t));        ptr = ptr - 4;        type = *(uint32_t *)ptr;        // This points to a memory overrun        GF_ASSERT (GF_MEM_TRAILER_MAGIC ==                *(uint32_t *)((char *)free_ptr + req_size));        *(uint32_t *) ((char *)free_ptr + req_size) = 0;        LOCK (&xl->mem_acct.rec[type].lock);        {                xl->mem_acct.rec[type].size -= req_size;                xl->mem_acct.rec[type].num_allocs--;                /* If all the instaces are freed up then ensure typestr is                 * set to NULL */                if (!xl->mem_acct.rec[type].num_allocs)                        xl->mem_acct.rec[type].typestr = NULL;        }        UNLOCK (&xl->mem_acct.rec[type].lock);free:        FREE (ptr);}

voidgf_store_unlock (gf_store_handle_t *sh){        GF_ASSERT (sh);        GF_ASSERT (sh->locked == F_LOCK);        sh->locked = F_ULOCK;        lockf (sh->fd, F_ULOCK, 0);        close (sh->fd);}

voidgf_mem_set_acct_info (xlator_t *xl, char **alloc_ptr,                      size_t size, uint32_t type){        char    *ptr = NULL;        if (!alloc_ptr)                return;        ptr = (char *) (*alloc_ptr);        if (!xl) {                GF_ASSERT (0);        }        if (!(xl->mem_acct.rec)) {                GF_ASSERT (0);        }        if (type > xl->mem_acct.num_types) {                GF_ASSERT (0);        }        LOCK(&xl->mem_acct.rec[type].lock);        {                xl->mem_acct.rec[type].size += size;                xl->mem_acct.rec[type].num_allocs++;                xl->mem_acct.rec[type].total_allocs++;                xl->mem_acct.rec[type].max_size =                        max (xl->mem_acct.rec[type].max_size,                             xl->mem_acct.rec[type].size);                xl->mem_acct.rec[type].max_num_allocs =                        max (xl->mem_acct.rec[type].max_num_allocs,                             xl->mem_acct.rec[type].num_allocs);        }        UNLOCK(&xl->mem_acct.rec[type].lock);        *(uint32_t *)(ptr) = type;        ptr = ptr + 4;        memcpy (ptr, &size, sizeof(size_t));        ptr += sizeof (size_t);        memcpy (ptr, &xl, sizeof(xlator_t *));        ptr += sizeof (xlator_t *);        *(uint32_t *)(ptr) = GF_MEM_HEADER_MAGIC;        ptr = ptr + 4;        ptr = ptr + 8; //padding        *(uint32_t *) (ptr + size) = GF_MEM_TRAILER_MAGIC;        *alloc_ptr = (void *)ptr;        return;}

intgf_mem_set_acct_info (xlator_t *xl, char **alloc_ptr, size_t size,		      uint32_t type, const char *typestr){        void              *ptr    = NULL;        struct mem_header *header = NULL;        if (!alloc_ptr)                return -1;        ptr = *alloc_ptr;        GF_ASSERT (xl != NULL);        GF_ASSERT (xl->mem_acct != NULL);        GF_ASSERT (type <= xl->mem_acct->num_types);        LOCK(&xl->mem_acct->rec[type].lock);        {		if (!xl->mem_acct->rec[type].typestr)			xl->mem_acct->rec[type].typestr = typestr;                xl->mem_acct->rec[type].size += size;                xl->mem_acct->rec[type].num_allocs++;                xl->mem_acct->rec[type].total_allocs++;                xl->mem_acct->rec[type].max_size =                        max (xl->mem_acct->rec[type].max_size,                             xl->mem_acct->rec[type].size);                xl->mem_acct->rec[type].max_num_allocs =                        max (xl->mem_acct->rec[type].max_num_allocs,                             xl->mem_acct->rec[type].num_allocs);        }        UNLOCK(&xl->mem_acct->rec[type].lock);        INCREMENT_ATOMIC (xl->mem_acct->lock, xl->mem_acct->refcnt);        header = (struct mem_header *) ptr;        header->type = type;        header->size = size;        header->mem_acct = xl->mem_acct;        header->magic = GF_MEM_HEADER_MAGIC;        ptr += sizeof (struct mem_header);        /* data follows in this gap of 'size' bytes */        *(uint32_t *) (ptr + size) = GF_MEM_TRAILER_MAGIC;        *alloc_ptr = ptr;        return 0;}

//设置内存统计信息intgf_mem_set_acct_info (xlator_t *xl, char **alloc_ptr, size_t size,		      uint32_t type, const char *typestr){        char    *ptr = NULL;        if (!alloc_ptr)                return -1;        ptr = (char *) (*alloc_ptr);        GF_ASSERT (xl != NULL);        GF_ASSERT (xl->mem_acct.rec != NULL);        GF_ASSERT (type <= xl->mem_acct.num_types);        LOCK(&xl->mem_acct.rec[type].lock);        {		if (!xl->mem_acct.rec[type].typestr)			xl->mem_acct.rec[type].typestr = typestr;                xl->mem_acct.rec[type].size += size;                xl->mem_acct.rec[type].num_allocs++;                xl->mem_acct.rec[type].total_allocs++;                xl->mem_acct.rec[type].max_size =                        max (xl->mem_acct.rec[type].max_size,                             xl->mem_acct.rec[type].size);                xl->mem_acct.rec[type].max_num_allocs =                        max (xl->mem_acct.rec[type].max_num_allocs,                             xl->mem_acct.rec[type].num_allocs);        }        UNLOCK(&xl->mem_acct.rec[type].lock);        // http://blog.csdn.net/wangyuling1234567890/article/details/24564891 普通内存分配结构有错误        //头大小: GF_MEM_HEADER_SIZE   (4 + sizeof (size_t) + sizeof (xlator_t *) + 4 + 8)        *(uint32_t *)(ptr) = type;        ptr = ptr + 4;        memcpy (ptr, &size, sizeof(size_t));        ptr += sizeof (size_t);        memcpy (ptr, &xl, sizeof(xlator_t *));        ptr += sizeof (xlator_t *);        *(uint32_t *)(ptr) = GF_MEM_HEADER_MAGIC; //魔数        ptr = ptr + 4;        ptr = ptr + 8; //padding 填充        //尾大小: GF_MEM_TRAILER_SIZE 8        *(uint32_t *) (ptr + size) = GF_MEM_TRAILER_MAGIC; //魔数        *alloc_ptr = (void *)ptr;        return 0;}

intgf_store_read_and_tokenize (FILE *file, char *str, char **iter_key,                            char **iter_val, gf_store_op_errno_t *store_errno){        int32_t     ret         =   -1;        char        *savetok    = NULL;        char        *key        = NULL;        char        *value      = NULL;        char        *temp       = NULL;        size_t       str_len    =    0;        GF_ASSERT (file);        GF_ASSERT (str);        GF_ASSERT (iter_key);        GF_ASSERT (iter_val);        GF_ASSERT (store_errno);        temp = fgets (str, PATH_MAX, file);        if (temp == NULL || feof (file)) {                ret = -1;                *store_errno = GD_STORE_EOF;                goto out;        }        str_len = strlen(str);        str[str_len - 1] = '/0';        /* Truncate the "/n", as fgets stores "/n" in str */        key = strtok_r (str, "=", &savetok);        if (!key) {                ret = -1;                *store_errno = GD_STORE_KEY_NULL;                goto out;        }        value = strtok_r (NULL, "", &savetok);        if (!value) {                ret = -1;                *store_errno = GD_STORE_VALUE_NULL;                goto out;        }        *iter_key = key;        *iter_val = value;        *store_errno = GD_STORE_SUCCESS;        ret = 0;out:        return ret;}

intgf_mem_set_acct_info (xlator_t *xl, char **alloc_ptr, size_t size,		      uint32_t type, const char *typestr){        char    *ptr = NULL;        if (!alloc_ptr)                return -1;        ptr = (char *) (*alloc_ptr);        GF_ASSERT (xl != NULL);        GF_ASSERT (xl->mem_acct.rec != NULL);        GF_ASSERT (type <= xl->mem_acct.num_types);        LOCK(&xl->mem_acct.rec[type].lock);        {		if (!xl->mem_acct.rec[type].typestr)			xl->mem_acct.rec[type].typestr = typestr;                xl->mem_acct.rec[type].size += size;                xl->mem_acct.rec[type].num_allocs++;                xl->mem_acct.rec[type].total_allocs++;                xl->mem_acct.rec[type].max_size =                        max (xl->mem_acct.rec[type].max_size,                             xl->mem_acct.rec[type].size);                xl->mem_acct.rec[type].max_num_allocs =                        max (xl->mem_acct.rec[type].max_num_allocs,                             xl->mem_acct.rec[type].num_allocs);        }        UNLOCK(&xl->mem_acct.rec[type].lock);        *(uint32_t *)(ptr) = type;        ptr = ptr + 4;        memcpy (ptr, &size, sizeof(size_t));        ptr += sizeof (size_t);        memcpy (ptr, &xl, sizeof(xlator_t *));        ptr += sizeof (xlator_t *);        *(uint32_t *)(ptr) = GF_MEM_HEADER_MAGIC;        ptr = ptr + 4;        ptr = ptr + 8; //padding        *(uint32_t *) (ptr + size) = GF_MEM_TRAILER_MAGIC;        *alloc_ptr = (void *)ptr;        return 0;}

int32_tgf_store_save_value (int fd, char *key, char *value){        int32_t         ret = -1;        int             dup_fd = -1;        FILE           *fp  = NULL;        GF_ASSERT (fd > 0);        GF_ASSERT (key);        GF_ASSERT (value);        dup_fd = dup (fd);        if (dup_fd == -1)                goto out;        fp = fdopen (dup_fd, "a+");        if (fp == NULL) {                gf_log ("", GF_LOG_WARNING, "fdopen failed.");                ret = -1;                goto out;        }        ret = fprintf (fp, "%s=%s/n", key, value);        if (ret < 0) {                gf_log ("", GF_LOG_WARNING, "Unable to store key: %s,"                        "value: %s, error: %s", key, value,                        strerror (errno));                ret = -1;                goto out;        }        ret = fflush (fp);        if (feof (fp)) {                gf_log ("", GF_LOG_WARNING,                        "fflush failed, error: %s",                        strerror (errno));                ret = -1;                goto out;        }        ret = 0;out:        if (fp)                fclose (fp);        gf_log ("", GF_LOG_DEBUG, "returning: %d", ret);        return ret;}

intxlator_volopt_dynload (char *xlator_type, void **dl_handle,                       volume_opt_list_t *opt_list){        int                     ret = -1;        char                    *name = NULL;        void                    *handle = NULL;        volume_opt_list_t       *vol_opt = NULL;        GF_VALIDATE_OR_GOTO ("xlator", xlator_type, out);        GF_ASSERT (dl_handle);        if (*dl_handle)                if (dlclose (*dl_handle))                        gf_log ("xlator", GF_LOG_WARNING, "Unable to close "                                  "previously opened handle( may be stale)."                                  "Ignoring the invalid handle");        ret = gf_asprintf (&name, "%s/%s.so", XLATORDIR, xlator_type);        if (-1 == ret) {                gf_log ("xlator", GF_LOG_ERROR, "asprintf failed");                goto out;        }        ret = -1;        gf_log ("xlator", GF_LOG_TRACE, "attempt to load file %s", name);        handle = dlopen (name, RTLD_NOW|RTLD_GLOBAL);        if (!handle) {                gf_log ("xlator", GF_LOG_WARNING, "%s", dlerror ());                goto out;        }        *dl_handle = handle;        vol_opt = GF_CALLOC (1, sizeof (volume_opt_list_t),                         gf_common_mt_volume_opt_list_t);        if (!vol_opt) {                goto out;        }        if (!(vol_opt->given_opt = dlsym (handle, "options"))) {                dlerror ();                gf_log ("xlator", GF_LOG_DEBUG,                         "Strict option validation not enforced -- neglecting");        }        opt_list->given_opt = vol_opt->given_opt;        INIT_LIST_HEAD (&vol_opt->list);        list_add_tail (&vol_opt->list, &opt_list->list);        ret = 0; out:        gf_log ("xlator", GF_LOG_DEBUG, "Returning %d", ret);        return ret;}

/*Libgfdb API Function: Used to terminate/de-initialize db connection *                      (Destructor function for db connection object) * Arguments: *      _conn_node  :  GFDB Connection node * Returns : if successful return 0 or *          -ve value in case of failure*/intfini_db (gfdb_conn_node_t *_conn_node){        int ret                                 = -1;        gfdb_db_operations_t *db_operations_t   = NULL;        CHECK_CONN_NODE_GOTO (_conn_node, empty);        db_operations_t = &_conn_node->gfdb_connection.gfdb_db_operations;        GF_ASSERT (db_operations_t->fini_db_op);        ret = db_operations_t->fini_db_op(&_conn_node->gfdb_connection.                                          gf_db_connection);        if (ret) {                gf_msg (GFDB_DATA_STORE, GF_LOG_ERROR, 0,                        LG_MSG_CLOSE_CONNECTION_FAILED, "Failed close the db "                        "connection");                goto out;        }        ret = delete_conn_node (_conn_node);        if (ret) {                gf_msg (GFDB_DATA_STORE, GF_LOG_ERROR, 0,                        LG_MSG_DELETE_FROM_LIST_FAILED, "Failed deleting "                        "connection node from list");        }empty:        ret = 0;out:        return ret;}

/*Internal function: Used initialize/map db operation of * specified type of db plugin*/static intinit_db_operations (gfdb_db_type_t       gfdb_db_type,                    gfdb_db_operations_t *gfdb_db_operations){        int ret = -1;        GF_ASSERT (gfdb_db_operations);        /*Clear the gfdb_db_operations*/        gfdb_db_operations = memset(gfdb_db_operations, 0,                                        sizeof(*gfdb_db_operations));        switch (gfdb_db_type) {        case GFDB_SQLITE3:                gf_sqlite3_fill_db_operations (gfdb_db_operations);                ret = 0;                break;        case GFDB_HYPERDEX:        case GFDB_HASH_FILE_STORE:        case GFDB_ROCKS_DB:                gf_msg (GFDB_DATA_STORE, GF_LOG_ERROR, 0,                        LG_MSG_UNSUPPORTED_PLUGIN, "Plugin not supported");                break;        case GFDB_INVALID_DB:        case GFDB_DB_END:                gf_msg (GFDB_DATA_STORE, GF_LOG_ERROR, 0,                        LG_MSG_INVALID_DB_TYPE, "Invalid DB Type");                break;        }        return ret;}

intgf_store_locked_local (gf_store_handle_t *sh){        GF_ASSERT (sh);        return (sh->locked == F_LOCK);}

voidrunner_redir (runner_t *runner, int fd, int tgt_fd){        GF_ASSERT (fd > 0 && fd < 3);        runner->chfd[fd] = (tgt_fd >= 0) ? tgt_fd : -2;}

FILE *runner_chio (runner_t *runner, int fd){        GF_ASSERT (fd > 0 && fd < 3);        return runner->chio[fd];}

static intxlator_option_validate_size_list (xlator_t *xl, const char *key,                                  const char *value, volume_option_t *opt,                                  char **op_errstr){        int                    ret = 0;        char                   errstr[1024] = {0, };        GF_ASSERT (value);        ret = gf_validate_size (value, opt);        if (ret)                ret = validate_list_elements (value, opt, NULL, &gf_validate_size);        if (ret) {                snprintf (errstr, 1024,                          "option %s %s: '%s' is not a valid "                          "size-list", key, value, value);                *op_errstr = gf_strdup (errstr);        }        return ret;}

void *mount3udp_thread (void *argv){        xlator_t         *nfsx   = argv;        register SVCXPRT *transp = NULL;        GF_ASSERT (nfsx);        if (glusterfs_this_set(nfsx)) {                gf_log (GF_MNT, GF_LOG_ERROR, "failed to set xlator, "                        "nfs.mount-udp will not work");                return NULL;        }        transp = svcudp_create(RPC_ANYSOCK);        if (transp == NULL) {                gf_log (GF_MNT, GF_LOG_ERROR, "svcudp_create error");                return NULL;        }        if (!svc_register(transp, MOUNT_PROGRAM, MOUNT_V3,                          mountudp_program_3, IPPROTO_UDP)) {                gf_log (GF_MNT, GF_LOG_ERROR, "svc_register error");                return NULL;        }        svc_run ();        gf_log (GF_MNT, GF_LOG_ERROR, "svc_run returned");        return NULL;}

/* Strips all whitespace characters in a string and returns length of new string * on success */intgf_strip_whitespace (char *str, int len){        int     i = 0;        int     new_len = 0;        char    *new_str = NULL;        GF_ASSERT (str);        new_str = GF_CALLOC (1, len + 1, gf_common_mt_char);        if (new_str == NULL)                return -1;        for (i = 0; i < len; i++) {                if (!isspace (str[i]))                        new_str[new_len++] = str[i];        }        new_str[new_len] = '/0';        if (new_len != len) {                memset (str, 0, len);                strncpy (str, new_str, new_len);        }        GF_FREE (new_str);        return new_len;}

/*Function to fill db operations*/voidgf_sqlite3_fill_db_operations(gfdb_db_operations_t  *gfdb_db_ops){        GF_ASSERT (gfdb_db_ops);        gfdb_db_ops->init_db_op = gf_sqlite3_init;        gfdb_db_ops->fini_db_op = gf_sqlite3_fini;        gfdb_db_ops->insert_record_op = gf_sqlite3_insert;        gfdb_db_ops->delete_record_op = gf_sqlite3_delete;        gfdb_db_ops->find_all_op = gf_sqlite3_find_all;        gfdb_db_ops->find_unchanged_for_time_op =                        gf_sqlite3_find_unchanged_for_time;        gfdb_db_ops->find_recently_changed_files_op =                        gf_sqlite3_find_recently_changed_files;        gfdb_db_ops->find_unchanged_for_time_freq_op =                        gf_sqlite3_find_unchanged_for_time_freq;        gfdb_db_ops->find_recently_changed_files_freq_op =                        gf_sqlite3_find_recently_changed_files_freq;        gfdb_db_ops->clear_files_heat_op = gf_sqlite3_clear_files_heat;        gfdb_db_ops->get_db_version = gf_sqlite3_version;        gfdb_db_ops->get_db_params = gf_sqlite3_pragma;        gfdb_db_ops->set_db_params = gf_sqlite3_set_pragma;}

static intcreate_filetable (sqlite3 *sqlite3_db_conn){        int ret                         =       -1;        char *sql_stmt                  =       NULL;        char *sql_strerror              =       NULL;        GF_ASSERT(sqlite3_db_conn);        sql_stmt = sql_stmt_init();        if (!sql_stmt) {                ret = ENOMEM;                goto out;        }        GF_CREATE_STMT(sql_stmt);        ret = sqlite3_exec (sqlite3_db_conn, sql_stmt, NULL, NULL,                                &sql_strerror);        if (ret != SQLITE_OK) {                gf_log (GFDB_STR_SQLITE3, GF_LOG_ERROR,                        "Failed executing: %s : %s",                        sql_stmt, sql_strerror);                sqlite3_free (sql_strerror);                        ret = -1;                        goto out;        }        ret = 0;out:        sql_stmt_fini (&sql_stmt);        return ret;}

intgf_sqlite3_fini (void **db_conn){        int ret = -1;        gf_sql_connection_t *sql_conn = NULL;        GF_ASSERT (db_conn);        sql_conn = *db_conn;        if (sql_conn) {                if (sql_conn->sqlite3_db_conn) {                        ret = gf_close_sqlite3_conn(sql_conn->sqlite3_db_conn);                        if (ret) {                                /*Logging of error done in                                 * gf_close_sqlite3_conn()*/                                goto out;                        }                        sql_conn->sqlite3_db_conn = NULL;                }                gf_sql_connection_fini (&sql_conn);        }        *db_conn = sql_conn;        ret = 0;out:        return ret;}

void *__gf_realloc (void *ptr, size_t size){        size_t          tot_size = 0;        char            *orig_ptr = NULL;        xlator_t        *xl = NULL;        uint32_t        type = 0;        if (!gf_mem_acct_enable)                return REALLOC (ptr, size);        tot_size = size + GF_MEM_HEADER_SIZE + GF_MEM_TRAILER_SIZE;        orig_ptr = (char *)ptr - 8 - 4;        GF_ASSERT (*(uint32_t *)orig_ptr == GF_MEM_HEADER_MAGIC);        orig_ptr = orig_ptr - sizeof(xlator_t *);        xl = *((xlator_t **)orig_ptr);        orig_ptr = (char *)ptr - GF_MEM_HEADER_SIZE;        type = *(uint32_t *)orig_ptr;        ptr = realloc (orig_ptr, tot_size);        if (!ptr) {                gf_log_nomem ("", GF_LOG_ALERT, tot_size);                return NULL;        }        gf_mem_set_acct_info (xl, (char **)&ptr, size, type);        return (void *)ptr;}