fuse_dfs.c
上传用户:quxuerui
上传日期:2018-01-08
资源大小:41811k
文件大小:4k
- /**
- * Licensed to the Apache Software Foundation (ASF) under one
- * or more contributor license agreements. See the NOTICE file
- * distributed with this work for additional information
- * regarding copyright ownership. The ASF licenses this file
- * to you under the Apache License, Version 2.0 (the
- * "License"); you may not use this file except in compliance
- * with the License. You may obtain a copy of the License at
- *
- * http://www.apache.org/licenses/LICENSE-2.0
- *
- * Unless required by applicable law or agreed to in writing, software
- * distributed under the License is distributed on an "AS IS" BASIS,
- * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
- * See the License for the specific language governing permissions and
- * limitations under the License.
- */
- #include "fuse_dfs.h"
- #include "fuse_options.h"
- #include "fuse_impls.h"
- #include "fuse_init.h"
- int is_protected(const char *path) {
- dfs_context *dfs = (dfs_context*)fuse_get_context()->private_data;
- assert(dfs != NULL);
- assert(dfs->protectedpaths);
- int i ;
- for (i = 0; dfs->protectedpaths[i]; i++) {
- if (strcmp(path, dfs->protectedpaths[i]) == 0) {
- return 1;
- }
- }
- return 0;
- }
- static struct fuse_operations dfs_oper = {
- .getattr = dfs_getattr,
- .access = dfs_access,
- .readdir = dfs_readdir,
- .destroy = dfs_destroy,
- .init = dfs_init,
- .open = dfs_open,
- .read = dfs_read,
- .symlink = dfs_symlink,
- .statfs = dfs_statfs,
- .mkdir = dfs_mkdir,
- .rmdir = dfs_rmdir,
- .rename = dfs_rename,
- .unlink = dfs_unlink,
- .release = dfs_release,
- .create = dfs_create,
- .write = dfs_write,
- .flush = dfs_flush,
- .mknod = dfs_mknod,
- .utimens = dfs_utimens,
- .chmod = dfs_chmod,
- .chown = dfs_chown,
- .truncate = dfs_truncate,
- };
- int main(int argc, char *argv[])
- {
- umask(0);
- extern const char *program;
- program = argv[0];
- struct fuse_args args = FUSE_ARGS_INIT(argc, argv);
- /* clear structure that holds our options */
- memset(&options, 0, sizeof(struct options));
- // some defaults
- options.rdbuffer_size = 10*1024*1024;
- options.attribute_timeout = 60;
- options.entry_timeout = 60;
- if (fuse_opt_parse(&args, &options, dfs_opts, dfs_options) == -1)
- /** error parsing options */
- return -1;
- // Some fuse options we set
- if (! options.private) {
- fuse_opt_add_arg(&args, "-oallow_other");
- }
- if (!options.no_permissions) {
- fuse_opt_add_arg(&args, "-odefault_permissions");
- }
- {
- char buf[1024];
- snprintf(buf, sizeof buf, "-oattr_timeout=%d",options.attribute_timeout);
- fuse_opt_add_arg(&args, buf);
- snprintf(buf, sizeof buf, "-oentry_timeout=%d",options.entry_timeout);
- fuse_opt_add_arg(&args, buf);
- }
- if (options.server == NULL || options.port == 0) {
- print_usage(argv[0]);
- exit(0);
- }
- //
- // Check we can connect to hdfs
- //
- if (options.initchecks == 1) {
- hdfsFS temp;
- if ((temp = hdfsConnect(options.server, options.port)) == NULL) {
- const char *cp = getenv("CLASSPATH");
- const char *ld = getenv("LD_LIBRARY_PATH");
- fprintf(stderr, "FATAL: misconfiguration problem, cannot connect to hdfs - here's your environmentn");
- fprintf(stderr, "LD_LIBRARY_PATH=%sn",ld == NULL ? "NULL" : ld);
- fprintf(stderr, "CLASSPATH=%sn",cp == NULL ? "NULL" : cp);
- syslog(LOG_ERR, "FATAL: misconfiguration problem, cannot connect to hdfs - here's your environmentn");
- syslog(LOG_ERR, "LD_LIBRARY_PATH=%sn",ld == NULL ? "NULL" : ld);
- syslog(LOG_ERR, "CLASSPATH=%sn",cp == NULL ? "NULL" : cp);
- exit(0);
- }
- temp = NULL;
- }
- int ret = fuse_main(args.argc, args.argv, &dfs_oper, NULL);
- if (ret) printf("n");
- /** free arguments */
- fuse_opt_free_args(&args);
- return ret;
- }