sdcard.c revision 575a2bbee30d70a1940077a5b699aaf93cb4e2cd
103ee9479a4ed67689b9bbccda20c60800a38b178Brian Swetland/* 203ee9479a4ed67689b9bbccda20c60800a38b178Brian Swetland * Copyright (C) 2010 The Android Open Source Project 303ee9479a4ed67689b9bbccda20c60800a38b178Brian Swetland * 403ee9479a4ed67689b9bbccda20c60800a38b178Brian Swetland * Licensed under the Apache License, Version 2.0 (the "License"); 503ee9479a4ed67689b9bbccda20c60800a38b178Brian Swetland * you may not use this file except in compliance with the License. 603ee9479a4ed67689b9bbccda20c60800a38b178Brian Swetland * You may obtain a copy of the License at 703ee9479a4ed67689b9bbccda20c60800a38b178Brian Swetland * 803ee9479a4ed67689b9bbccda20c60800a38b178Brian Swetland * http://www.apache.org/licenses/LICENSE-2.0 903ee9479a4ed67689b9bbccda20c60800a38b178Brian Swetland * 1003ee9479a4ed67689b9bbccda20c60800a38b178Brian Swetland * Unless required by applicable law or agreed to in writing, software 1103ee9479a4ed67689b9bbccda20c60800a38b178Brian Swetland * distributed under the License is distributed on an "AS IS" BASIS, 1203ee9479a4ed67689b9bbccda20c60800a38b178Brian Swetland * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 1303ee9479a4ed67689b9bbccda20c60800a38b178Brian Swetland * See the License for the specific language governing permissions and 1403ee9479a4ed67689b9bbccda20c60800a38b178Brian Swetland * limitations under the License. 1503ee9479a4ed67689b9bbccda20c60800a38b178Brian Swetland */ 1603ee9479a4ed67689b9bbccda20c60800a38b178Brian Swetland 1703ee9479a4ed67689b9bbccda20c60800a38b178Brian Swetland#include <stdio.h> 1803ee9479a4ed67689b9bbccda20c60800a38b178Brian Swetland#include <stdlib.h> 1903ee9479a4ed67689b9bbccda20c60800a38b178Brian Swetland#include <string.h> 2003ee9479a4ed67689b9bbccda20c60800a38b178Brian Swetland#include <unistd.h> 2103ee9479a4ed67689b9bbccda20c60800a38b178Brian Swetland#include <errno.h> 2203ee9479a4ed67689b9bbccda20c60800a38b178Brian Swetland#include <fcntl.h> 2303ee9479a4ed67689b9bbccda20c60800a38b178Brian Swetland#include <sys/mount.h> 2403ee9479a4ed67689b9bbccda20c60800a38b178Brian Swetland#include <sys/stat.h> 254553b08d7555a103fdbe8623a9cbd826a7e413ffMike Lockwood#include <sys/statfs.h> 2603ee9479a4ed67689b9bbccda20c60800a38b178Brian Swetland#include <sys/uio.h> 2703ee9479a4ed67689b9bbccda20c60800a38b178Brian Swetland#include <dirent.h> 281bedb73f9fc239b69d958cbabc50c7ba382bacbcMike Lockwood#include <ctype.h> 2903ee9479a4ed67689b9bbccda20c60800a38b178Brian Swetland 30b14a2c6e34b197870433386fb809d34b58b30fc0Brian Swetland#include <private/android_filesystem_config.h> 31b14a2c6e34b197870433386fb809d34b58b30fc0Brian Swetland 3203ee9479a4ed67689b9bbccda20c60800a38b178Brian Swetland#include "fuse.h" 3303ee9479a4ed67689b9bbccda20c60800a38b178Brian Swetland 3403ee9479a4ed67689b9bbccda20c60800a38b178Brian Swetland/* README 3503ee9479a4ed67689b9bbccda20c60800a38b178Brian Swetland * 3603ee9479a4ed67689b9bbccda20c60800a38b178Brian Swetland * What is this? 3703ee9479a4ed67689b9bbccda20c60800a38b178Brian Swetland * 3803ee9479a4ed67689b9bbccda20c60800a38b178Brian Swetland * sdcard is a program that uses FUSE to emulate FAT-on-sdcard style 3903ee9479a4ed67689b9bbccda20c60800a38b178Brian Swetland * directory permissions (all files are given fixed owner, group, and 4003ee9479a4ed67689b9bbccda20c60800a38b178Brian Swetland * permissions at creation, owner, group, and permissions are not 4103ee9479a4ed67689b9bbccda20c60800a38b178Brian Swetland * changeable, symlinks and hardlinks are not createable, etc. 4203ee9479a4ed67689b9bbccda20c60800a38b178Brian Swetland * 4303ee9479a4ed67689b9bbccda20c60800a38b178Brian Swetland * usage: sdcard <path> <uid> <gid> 4403ee9479a4ed67689b9bbccda20c60800a38b178Brian Swetland * 4503ee9479a4ed67689b9bbccda20c60800a38b178Brian Swetland * It must be run as root, but will change to uid/gid as soon as it 464553b08d7555a103fdbe8623a9cbd826a7e413ffMike Lockwood * mounts a filesystem on /mnt/sdcard. It will refuse to run if uid or 4703ee9479a4ed67689b9bbccda20c60800a38b178Brian Swetland * gid are zero. 4803ee9479a4ed67689b9bbccda20c60800a38b178Brian Swetland * 4903ee9479a4ed67689b9bbccda20c60800a38b178Brian Swetland * 5003ee9479a4ed67689b9bbccda20c60800a38b178Brian Swetland * Things I believe to be true: 5103ee9479a4ed67689b9bbccda20c60800a38b178Brian Swetland * 5203ee9479a4ed67689b9bbccda20c60800a38b178Brian Swetland * - ops that return a fuse_entry (LOOKUP, MKNOD, MKDIR, LINK, SYMLINK, 5303ee9479a4ed67689b9bbccda20c60800a38b178Brian Swetland * CREAT) must bump that node's refcount 5403ee9479a4ed67689b9bbccda20c60800a38b178Brian Swetland * - don't forget that FORGET can forget multiple references (req->nlookup) 5503ee9479a4ed67689b9bbccda20c60800a38b178Brian Swetland * - if an op that returns a fuse_entry fails writing the reply to the 5603ee9479a4ed67689b9bbccda20c60800a38b178Brian Swetland * kernel, you must rollback the refcount to reflect the reference the 5703ee9479a4ed67689b9bbccda20c60800a38b178Brian Swetland * kernel did not actually acquire 5803ee9479a4ed67689b9bbccda20c60800a38b178Brian Swetland * 5903ee9479a4ed67689b9bbccda20c60800a38b178Brian Swetland */ 6003ee9479a4ed67689b9bbccda20c60800a38b178Brian Swetland 6103ee9479a4ed67689b9bbccda20c60800a38b178Brian Swetland#define FUSE_TRACE 0 6203ee9479a4ed67689b9bbccda20c60800a38b178Brian Swetland 6303ee9479a4ed67689b9bbccda20c60800a38b178Brian Swetland#if FUSE_TRACE 6403ee9479a4ed67689b9bbccda20c60800a38b178Brian Swetland#define TRACE(x...) fprintf(stderr,x) 6503ee9479a4ed67689b9bbccda20c60800a38b178Brian Swetland#else 6603ee9479a4ed67689b9bbccda20c60800a38b178Brian Swetland#define TRACE(x...) do {} while (0) 6703ee9479a4ed67689b9bbccda20c60800a38b178Brian Swetland#endif 6803ee9479a4ed67689b9bbccda20c60800a38b178Brian Swetland 6903ee9479a4ed67689b9bbccda20c60800a38b178Brian Swetland#define ERROR(x...) fprintf(stderr,x) 7003ee9479a4ed67689b9bbccda20c60800a38b178Brian Swetland 7103ee9479a4ed67689b9bbccda20c60800a38b178Brian Swetland#define FUSE_UNKNOWN_INO 0xffffffff 7203ee9479a4ed67689b9bbccda20c60800a38b178Brian Swetland 734553b08d7555a103fdbe8623a9cbd826a7e413ffMike Lockwood#define MOUNT_POINT "/mnt/sdcard" 744553b08d7555a103fdbe8623a9cbd826a7e413ffMike Lockwood 7503ee9479a4ed67689b9bbccda20c60800a38b178Brian Swetlandstruct handle { 7603ee9479a4ed67689b9bbccda20c60800a38b178Brian Swetland struct node *node; 7703ee9479a4ed67689b9bbccda20c60800a38b178Brian Swetland int fd; 7803ee9479a4ed67689b9bbccda20c60800a38b178Brian Swetland}; 7903ee9479a4ed67689b9bbccda20c60800a38b178Brian Swetland 8003ee9479a4ed67689b9bbccda20c60800a38b178Brian Swetlandstruct dirhandle { 8103ee9479a4ed67689b9bbccda20c60800a38b178Brian Swetland struct node *node; 8203ee9479a4ed67689b9bbccda20c60800a38b178Brian Swetland DIR *d; 8303ee9479a4ed67689b9bbccda20c60800a38b178Brian Swetland}; 8403ee9479a4ed67689b9bbccda20c60800a38b178Brian Swetland 8503ee9479a4ed67689b9bbccda20c60800a38b178Brian Swetlandstruct node { 8603ee9479a4ed67689b9bbccda20c60800a38b178Brian Swetland __u64 nid; 8703ee9479a4ed67689b9bbccda20c60800a38b178Brian Swetland __u64 gen; 8803ee9479a4ed67689b9bbccda20c60800a38b178Brian Swetland 8911ccdb3be67b22f677065715ace68aabf371acc7Paul Eastham struct node *next; /* per-dir sibling list */ 9011ccdb3be67b22f677065715ace68aabf371acc7Paul Eastham struct node *child; /* first contained file by this dir */ 9111ccdb3be67b22f677065715ace68aabf371acc7Paul Eastham struct node *all; /* global node list */ 9211ccdb3be67b22f677065715ace68aabf371acc7Paul Eastham struct node *parent; /* containing directory */ 9303ee9479a4ed67689b9bbccda20c60800a38b178Brian Swetland 9403ee9479a4ed67689b9bbccda20c60800a38b178Brian Swetland __u32 refcount; 9503ee9479a4ed67689b9bbccda20c60800a38b178Brian Swetland __u32 namelen; 9603ee9479a4ed67689b9bbccda20c60800a38b178Brian Swetland 9711ccdb3be67b22f677065715ace68aabf371acc7Paul Eastham char *name; 98575a2bbee30d70a1940077a5b699aaf93cb4e2cdMike Lockwood /* If non-null, this is the real name of the file in the underlying storage. 99575a2bbee30d70a1940077a5b699aaf93cb4e2cdMike Lockwood * This may differ from the field "name" only by case. 100575a2bbee30d70a1940077a5b699aaf93cb4e2cdMike Lockwood * strlen(actual_name) will always equal strlen(name), so it is safe to use 101575a2bbee30d70a1940077a5b699aaf93cb4e2cdMike Lockwood * namelen for both fields. 102575a2bbee30d70a1940077a5b699aaf93cb4e2cdMike Lockwood */ 103575a2bbee30d70a1940077a5b699aaf93cb4e2cdMike Lockwood char *actual_name; 10403ee9479a4ed67689b9bbccda20c60800a38b178Brian Swetland}; 10503ee9479a4ed67689b9bbccda20c60800a38b178Brian Swetland 10603ee9479a4ed67689b9bbccda20c60800a38b178Brian Swetlandstruct fuse { 10703ee9479a4ed67689b9bbccda20c60800a38b178Brian Swetland __u64 next_generation; 10803ee9479a4ed67689b9bbccda20c60800a38b178Brian Swetland __u64 next_node_id; 10903ee9479a4ed67689b9bbccda20c60800a38b178Brian Swetland 11003ee9479a4ed67689b9bbccda20c60800a38b178Brian Swetland int fd; 11103ee9479a4ed67689b9bbccda20c60800a38b178Brian Swetland 11203ee9479a4ed67689b9bbccda20c60800a38b178Brian Swetland struct node *all; 11303ee9479a4ed67689b9bbccda20c60800a38b178Brian Swetland 11403ee9479a4ed67689b9bbccda20c60800a38b178Brian Swetland struct node root; 11503ee9479a4ed67689b9bbccda20c60800a38b178Brian Swetland char rootpath[1024]; 11603ee9479a4ed67689b9bbccda20c60800a38b178Brian Swetland}; 11703ee9479a4ed67689b9bbccda20c60800a38b178Brian Swetland 1181bedb73f9fc239b69d958cbabc50c7ba382bacbcMike Lockwoodstatic unsigned uid = -1; 1191bedb73f9fc239b69d958cbabc50c7ba382bacbcMike Lockwoodstatic unsigned gid = -1; 1204f35e623a2359789406772009078d1a6ca7af6b3Mike Lockwood 12103ee9479a4ed67689b9bbccda20c60800a38b178Brian Swetland#define PATH_BUFFER_SIZE 1024 12203ee9479a4ed67689b9bbccda20c60800a38b178Brian Swetland 123575a2bbee30d70a1940077a5b699aaf93cb4e2cdMike Lockwood#define NO_CASE_SENSITIVE_MATCH 0 124575a2bbee30d70a1940077a5b699aaf93cb4e2cdMike Lockwood#define CASE_SENSITIVE_MATCH 1 125b94d320b1e7e2a3493147f6763cd2825b111a4d8Mike Lockwood 126f43219e0b1022b257499289ceb951f6a1a44bf9cPaul Eastham/* 127f43219e0b1022b257499289ceb951f6a1a44bf9cPaul Eastham * Get the real-life absolute path to a node. 128f43219e0b1022b257499289ceb951f6a1a44bf9cPaul Eastham * node: start at this node 129f43219e0b1022b257499289ceb951f6a1a44bf9cPaul Eastham * buf: storage for returned string 130f43219e0b1022b257499289ceb951f6a1a44bf9cPaul Eastham * name: append this string to path if set 131f43219e0b1022b257499289ceb951f6a1a44bf9cPaul Eastham */ 132575a2bbee30d70a1940077a5b699aaf93cb4e2cdMike Lockwoodchar *do_node_get_path(struct node *node, char *buf, const char *name, int match_case_insensitive) 13303ee9479a4ed67689b9bbccda20c60800a38b178Brian Swetland{ 134575a2bbee30d70a1940077a5b699aaf93cb4e2cdMike Lockwood struct node *in_node = node; 135575a2bbee30d70a1940077a5b699aaf93cb4e2cdMike Lockwood const char *in_name = name; 13603ee9479a4ed67689b9bbccda20c60800a38b178Brian Swetland char *out = buf + PATH_BUFFER_SIZE - 1; 13703ee9479a4ed67689b9bbccda20c60800a38b178Brian Swetland int len; 13803ee9479a4ed67689b9bbccda20c60800a38b178Brian Swetland out[0] = 0; 13903ee9479a4ed67689b9bbccda20c60800a38b178Brian Swetland 14003ee9479a4ed67689b9bbccda20c60800a38b178Brian Swetland if (name) { 14103ee9479a4ed67689b9bbccda20c60800a38b178Brian Swetland len = strlen(name); 14203ee9479a4ed67689b9bbccda20c60800a38b178Brian Swetland goto start; 14303ee9479a4ed67689b9bbccda20c60800a38b178Brian Swetland } 14403ee9479a4ed67689b9bbccda20c60800a38b178Brian Swetland 14503ee9479a4ed67689b9bbccda20c60800a38b178Brian Swetland while (node) { 146575a2bbee30d70a1940077a5b699aaf93cb4e2cdMike Lockwood name = (node->actual_name ? node->actual_name : node->name); 14703ee9479a4ed67689b9bbccda20c60800a38b178Brian Swetland len = node->namelen; 14803ee9479a4ed67689b9bbccda20c60800a38b178Brian Swetland node = node->parent; 14903ee9479a4ed67689b9bbccda20c60800a38b178Brian Swetland start: 15003ee9479a4ed67689b9bbccda20c60800a38b178Brian Swetland if ((len + 1) > (out - buf)) 15103ee9479a4ed67689b9bbccda20c60800a38b178Brian Swetland return 0; 15203ee9479a4ed67689b9bbccda20c60800a38b178Brian Swetland out -= len; 15303ee9479a4ed67689b9bbccda20c60800a38b178Brian Swetland memcpy(out, name, len); 154575a2bbee30d70a1940077a5b699aaf93cb4e2cdMike Lockwood /* avoid double slash at beginning of path */ 155575a2bbee30d70a1940077a5b699aaf93cb4e2cdMike Lockwood if (out[0] != '/') { 156575a2bbee30d70a1940077a5b699aaf93cb4e2cdMike Lockwood out --; 157575a2bbee30d70a1940077a5b699aaf93cb4e2cdMike Lockwood out[0] = '/'; 158575a2bbee30d70a1940077a5b699aaf93cb4e2cdMike Lockwood } 15903ee9479a4ed67689b9bbccda20c60800a38b178Brian Swetland } 16003ee9479a4ed67689b9bbccda20c60800a38b178Brian Swetland 161575a2bbee30d70a1940077a5b699aaf93cb4e2cdMike Lockwood /* If we are searching for a file within node (rather than computing node's path) 162575a2bbee30d70a1940077a5b699aaf93cb4e2cdMike Lockwood * and fail, then we need to look for a case insensitive match. 163575a2bbee30d70a1940077a5b699aaf93cb4e2cdMike Lockwood */ 164575a2bbee30d70a1940077a5b699aaf93cb4e2cdMike Lockwood if (in_name && match_case_insensitive && access(out, F_OK) != 0) { 165575a2bbee30d70a1940077a5b699aaf93cb4e2cdMike Lockwood char *path, buffer[PATH_BUFFER_SIZE]; 166575a2bbee30d70a1940077a5b699aaf93cb4e2cdMike Lockwood DIR* dir; 167575a2bbee30d70a1940077a5b699aaf93cb4e2cdMike Lockwood struct dirent* entry; 168575a2bbee30d70a1940077a5b699aaf93cb4e2cdMike Lockwood path = do_node_get_path(in_node, buffer, NULL, NO_CASE_SENSITIVE_MATCH); 169575a2bbee30d70a1940077a5b699aaf93cb4e2cdMike Lockwood dir = opendir(path); 170575a2bbee30d70a1940077a5b699aaf93cb4e2cdMike Lockwood if (!dir) { 171575a2bbee30d70a1940077a5b699aaf93cb4e2cdMike Lockwood ERROR("opendir %s failed: %s", path, strerror(errno)); 172575a2bbee30d70a1940077a5b699aaf93cb4e2cdMike Lockwood return out; 173575a2bbee30d70a1940077a5b699aaf93cb4e2cdMike Lockwood } 174575a2bbee30d70a1940077a5b699aaf93cb4e2cdMike Lockwood 175575a2bbee30d70a1940077a5b699aaf93cb4e2cdMike Lockwood while ((entry = readdir(dir))) { 176575a2bbee30d70a1940077a5b699aaf93cb4e2cdMike Lockwood if (!strcasecmp(entry->d_name, in_name)) { 177575a2bbee30d70a1940077a5b699aaf93cb4e2cdMike Lockwood /* we have a match - replace the name */ 178575a2bbee30d70a1940077a5b699aaf93cb4e2cdMike Lockwood len = strlen(in_name); 179575a2bbee30d70a1940077a5b699aaf93cb4e2cdMike Lockwood memcpy(buf + PATH_BUFFER_SIZE - len - 1, entry->d_name, len); 180575a2bbee30d70a1940077a5b699aaf93cb4e2cdMike Lockwood break; 181575a2bbee30d70a1940077a5b699aaf93cb4e2cdMike Lockwood } 182575a2bbee30d70a1940077a5b699aaf93cb4e2cdMike Lockwood } 183575a2bbee30d70a1940077a5b699aaf93cb4e2cdMike Lockwood closedir(dir); 184575a2bbee30d70a1940077a5b699aaf93cb4e2cdMike Lockwood } 185575a2bbee30d70a1940077a5b699aaf93cb4e2cdMike Lockwood 186575a2bbee30d70a1940077a5b699aaf93cb4e2cdMike Lockwood return out; 187575a2bbee30d70a1940077a5b699aaf93cb4e2cdMike Lockwood} 188575a2bbee30d70a1940077a5b699aaf93cb4e2cdMike Lockwood 189575a2bbee30d70a1940077a5b699aaf93cb4e2cdMike Lockwoodchar *node_get_path(struct node *node, char *buf, const char *name) 190575a2bbee30d70a1940077a5b699aaf93cb4e2cdMike Lockwood{ 191575a2bbee30d70a1940077a5b699aaf93cb4e2cdMike Lockwood /* We look for case insensitive matches by default */ 192575a2bbee30d70a1940077a5b699aaf93cb4e2cdMike Lockwood return do_node_get_path(node, buf, name, CASE_SENSITIVE_MATCH); 19303ee9479a4ed67689b9bbccda20c60800a38b178Brian Swetland} 19403ee9479a4ed67689b9bbccda20c60800a38b178Brian Swetland 19503ee9479a4ed67689b9bbccda20c60800a38b178Brian Swetlandvoid attr_from_stat(struct fuse_attr *attr, struct stat *s) 19603ee9479a4ed67689b9bbccda20c60800a38b178Brian Swetland{ 19703ee9479a4ed67689b9bbccda20c60800a38b178Brian Swetland attr->ino = s->st_ino; 19803ee9479a4ed67689b9bbccda20c60800a38b178Brian Swetland attr->size = s->st_size; 19903ee9479a4ed67689b9bbccda20c60800a38b178Brian Swetland attr->blocks = s->st_blocks; 2004553b08d7555a103fdbe8623a9cbd826a7e413ffMike Lockwood attr->atime = s->st_atime; 2014553b08d7555a103fdbe8623a9cbd826a7e413ffMike Lockwood attr->mtime = s->st_mtime; 2024553b08d7555a103fdbe8623a9cbd826a7e413ffMike Lockwood attr->ctime = s->st_ctime; 2034553b08d7555a103fdbe8623a9cbd826a7e413ffMike Lockwood attr->atimensec = s->st_atime_nsec; 2044553b08d7555a103fdbe8623a9cbd826a7e413ffMike Lockwood attr->mtimensec = s->st_mtime_nsec; 2054553b08d7555a103fdbe8623a9cbd826a7e413ffMike Lockwood attr->ctimensec = s->st_ctime_nsec; 20603ee9479a4ed67689b9bbccda20c60800a38b178Brian Swetland attr->mode = s->st_mode; 20703ee9479a4ed67689b9bbccda20c60800a38b178Brian Swetland attr->nlink = s->st_nlink; 20803ee9479a4ed67689b9bbccda20c60800a38b178Brian Swetland 209b14a2c6e34b197870433386fb809d34b58b30fc0Brian Swetland /* force permissions to something reasonable: 210b14a2c6e34b197870433386fb809d34b58b30fc0Brian Swetland * world readable 211b14a2c6e34b197870433386fb809d34b58b30fc0Brian Swetland * writable by the sdcard group 212b14a2c6e34b197870433386fb809d34b58b30fc0Brian Swetland */ 213b14a2c6e34b197870433386fb809d34b58b30fc0Brian Swetland if (attr->mode & 0100) { 214b14a2c6e34b197870433386fb809d34b58b30fc0Brian Swetland attr->mode = (attr->mode & (~0777)) | 0775; 215b14a2c6e34b197870433386fb809d34b58b30fc0Brian Swetland } else { 216b14a2c6e34b197870433386fb809d34b58b30fc0Brian Swetland attr->mode = (attr->mode & (~0777)) | 0664; 217b14a2c6e34b197870433386fb809d34b58b30fc0Brian Swetland } 218b14a2c6e34b197870433386fb809d34b58b30fc0Brian Swetland 219b14a2c6e34b197870433386fb809d34b58b30fc0Brian Swetland /* all files owned by root.sdcard */ 220b14a2c6e34b197870433386fb809d34b58b30fc0Brian Swetland attr->uid = 0; 221b14a2c6e34b197870433386fb809d34b58b30fc0Brian Swetland attr->gid = AID_SDCARD_RW; 22203ee9479a4ed67689b9bbccda20c60800a38b178Brian Swetland} 22303ee9479a4ed67689b9bbccda20c60800a38b178Brian Swetland 22403ee9479a4ed67689b9bbccda20c60800a38b178Brian Swetlandint node_get_attr(struct node *node, struct fuse_attr *attr) 22503ee9479a4ed67689b9bbccda20c60800a38b178Brian Swetland{ 22603ee9479a4ed67689b9bbccda20c60800a38b178Brian Swetland int res; 22703ee9479a4ed67689b9bbccda20c60800a38b178Brian Swetland struct stat s; 22803ee9479a4ed67689b9bbccda20c60800a38b178Brian Swetland char *path, buffer[PATH_BUFFER_SIZE]; 22903ee9479a4ed67689b9bbccda20c60800a38b178Brian Swetland 23003ee9479a4ed67689b9bbccda20c60800a38b178Brian Swetland path = node_get_path(node, buffer, 0); 23103ee9479a4ed67689b9bbccda20c60800a38b178Brian Swetland res = lstat(path, &s); 23203ee9479a4ed67689b9bbccda20c60800a38b178Brian Swetland if (res < 0) { 23303ee9479a4ed67689b9bbccda20c60800a38b178Brian Swetland ERROR("lstat('%s') errno %d\n", path, errno); 23403ee9479a4ed67689b9bbccda20c60800a38b178Brian Swetland return -1; 23503ee9479a4ed67689b9bbccda20c60800a38b178Brian Swetland } 23603ee9479a4ed67689b9bbccda20c60800a38b178Brian Swetland 23703ee9479a4ed67689b9bbccda20c60800a38b178Brian Swetland attr_from_stat(attr, &s); 23803ee9479a4ed67689b9bbccda20c60800a38b178Brian Swetland attr->ino = node->nid; 23903ee9479a4ed67689b9bbccda20c60800a38b178Brian Swetland 24003ee9479a4ed67689b9bbccda20c60800a38b178Brian Swetland return 0; 24103ee9479a4ed67689b9bbccda20c60800a38b178Brian Swetland} 24203ee9479a4ed67689b9bbccda20c60800a38b178Brian Swetland 24311ccdb3be67b22f677065715ace68aabf371acc7Paul Easthamstatic void add_node_to_parent(struct node *node, struct node *parent) { 24411ccdb3be67b22f677065715ace68aabf371acc7Paul Eastham node->parent = parent; 24511ccdb3be67b22f677065715ace68aabf371acc7Paul Eastham node->next = parent->child; 24611ccdb3be67b22f677065715ace68aabf371acc7Paul Eastham parent->child = node; 24777085c570e7db2ea4a52e3a0fec5100687c31b46Paul Eastham parent->refcount++; 24811ccdb3be67b22f677065715ace68aabf371acc7Paul Eastham} 24911ccdb3be67b22f677065715ace68aabf371acc7Paul Eastham 250575a2bbee30d70a1940077a5b699aaf93cb4e2cdMike Lockwood/* Check to see if our parent directory already has a file with a name 251575a2bbee30d70a1940077a5b699aaf93cb4e2cdMike Lockwood * that differs only by case. If we find one, store it in the actual_name 252575a2bbee30d70a1940077a5b699aaf93cb4e2cdMike Lockwood * field so node_get_path will map it to this file in the underlying storage. 253575a2bbee30d70a1940077a5b699aaf93cb4e2cdMike Lockwood */ 254575a2bbee30d70a1940077a5b699aaf93cb4e2cdMike Lockwoodstatic void node_find_actual_name(struct node *node) 255575a2bbee30d70a1940077a5b699aaf93cb4e2cdMike Lockwood{ 256575a2bbee30d70a1940077a5b699aaf93cb4e2cdMike Lockwood char *path, buffer[PATH_BUFFER_SIZE]; 257575a2bbee30d70a1940077a5b699aaf93cb4e2cdMike Lockwood const char *node_name = node->name; 258575a2bbee30d70a1940077a5b699aaf93cb4e2cdMike Lockwood DIR* dir; 259575a2bbee30d70a1940077a5b699aaf93cb4e2cdMike Lockwood struct dirent* entry; 260575a2bbee30d70a1940077a5b699aaf93cb4e2cdMike Lockwood 261575a2bbee30d70a1940077a5b699aaf93cb4e2cdMike Lockwood if (!node->parent) return; 262575a2bbee30d70a1940077a5b699aaf93cb4e2cdMike Lockwood 263575a2bbee30d70a1940077a5b699aaf93cb4e2cdMike Lockwood path = node_get_path(node->parent, buffer, 0); 264575a2bbee30d70a1940077a5b699aaf93cb4e2cdMike Lockwood dir = opendir(path); 265575a2bbee30d70a1940077a5b699aaf93cb4e2cdMike Lockwood if (!dir) { 266575a2bbee30d70a1940077a5b699aaf93cb4e2cdMike Lockwood ERROR("opendir %s failed: %s", path, strerror(errno)); 267575a2bbee30d70a1940077a5b699aaf93cb4e2cdMike Lockwood return; 268575a2bbee30d70a1940077a5b699aaf93cb4e2cdMike Lockwood } 269575a2bbee30d70a1940077a5b699aaf93cb4e2cdMike Lockwood 270575a2bbee30d70a1940077a5b699aaf93cb4e2cdMike Lockwood while ((entry = readdir(dir))) { 271575a2bbee30d70a1940077a5b699aaf93cb4e2cdMike Lockwood const char *test_name = entry->d_name; 272575a2bbee30d70a1940077a5b699aaf93cb4e2cdMike Lockwood if (strcmp(test_name, node_name) && !strcasecmp(test_name, node_name)) { 273575a2bbee30d70a1940077a5b699aaf93cb4e2cdMike Lockwood /* we have a match - differs but only by case */ 274575a2bbee30d70a1940077a5b699aaf93cb4e2cdMike Lockwood node->actual_name = strdup(test_name); 275575a2bbee30d70a1940077a5b699aaf93cb4e2cdMike Lockwood if (!node->actual_name) { 276575a2bbee30d70a1940077a5b699aaf93cb4e2cdMike Lockwood ERROR("strdup failed - out of memory\n"); 277575a2bbee30d70a1940077a5b699aaf93cb4e2cdMike Lockwood exit(1); 278575a2bbee30d70a1940077a5b699aaf93cb4e2cdMike Lockwood } 279575a2bbee30d70a1940077a5b699aaf93cb4e2cdMike Lockwood break; 280575a2bbee30d70a1940077a5b699aaf93cb4e2cdMike Lockwood } 281575a2bbee30d70a1940077a5b699aaf93cb4e2cdMike Lockwood } 282575a2bbee30d70a1940077a5b699aaf93cb4e2cdMike Lockwood closedir(dir); 283575a2bbee30d70a1940077a5b699aaf93cb4e2cdMike Lockwood} 284575a2bbee30d70a1940077a5b699aaf93cb4e2cdMike Lockwood 28503ee9479a4ed67689b9bbccda20c60800a38b178Brian Swetlandstruct node *node_create(struct node *parent, const char *name, __u64 nid, __u64 gen) 28603ee9479a4ed67689b9bbccda20c60800a38b178Brian Swetland{ 28703ee9479a4ed67689b9bbccda20c60800a38b178Brian Swetland struct node *node; 28803ee9479a4ed67689b9bbccda20c60800a38b178Brian Swetland int namelen = strlen(name); 28903ee9479a4ed67689b9bbccda20c60800a38b178Brian Swetland 29011ccdb3be67b22f677065715ace68aabf371acc7Paul Eastham node = calloc(1, sizeof(struct node)); 29103ee9479a4ed67689b9bbccda20c60800a38b178Brian Swetland if (node == 0) { 29203ee9479a4ed67689b9bbccda20c60800a38b178Brian Swetland return 0; 29303ee9479a4ed67689b9bbccda20c60800a38b178Brian Swetland } 29411ccdb3be67b22f677065715ace68aabf371acc7Paul Eastham node->name = malloc(namelen + 1); 29511ccdb3be67b22f677065715ace68aabf371acc7Paul Eastham if (node->name == 0) { 29611ccdb3be67b22f677065715ace68aabf371acc7Paul Eastham free(node); 29711ccdb3be67b22f677065715ace68aabf371acc7Paul Eastham return 0; 29811ccdb3be67b22f677065715ace68aabf371acc7Paul Eastham } 29903ee9479a4ed67689b9bbccda20c60800a38b178Brian Swetland 30003ee9479a4ed67689b9bbccda20c60800a38b178Brian Swetland node->nid = nid; 30103ee9479a4ed67689b9bbccda20c60800a38b178Brian Swetland node->gen = gen; 30211ccdb3be67b22f677065715ace68aabf371acc7Paul Eastham add_node_to_parent(node, parent); 30303ee9479a4ed67689b9bbccda20c60800a38b178Brian Swetland memcpy(node->name, name, namelen + 1); 30403ee9479a4ed67689b9bbccda20c60800a38b178Brian Swetland node->namelen = namelen; 305575a2bbee30d70a1940077a5b699aaf93cb4e2cdMike Lockwood node_find_actual_name(node); 30603ee9479a4ed67689b9bbccda20c60800a38b178Brian Swetland return node; 30703ee9479a4ed67689b9bbccda20c60800a38b178Brian Swetland} 30803ee9479a4ed67689b9bbccda20c60800a38b178Brian Swetland 30911ccdb3be67b22f677065715ace68aabf371acc7Paul Easthamstatic char *rename_node(struct node *node, const char *name) 31011ccdb3be67b22f677065715ace68aabf371acc7Paul Eastham{ 31111ccdb3be67b22f677065715ace68aabf371acc7Paul Eastham node->namelen = strlen(name); 31211ccdb3be67b22f677065715ace68aabf371acc7Paul Eastham char *newname = realloc(node->name, node->namelen + 1); 31311ccdb3be67b22f677065715ace68aabf371acc7Paul Eastham if (newname == 0) 31411ccdb3be67b22f677065715ace68aabf371acc7Paul Eastham return 0; 31511ccdb3be67b22f677065715ace68aabf371acc7Paul Eastham node->name = newname; 31611ccdb3be67b22f677065715ace68aabf371acc7Paul Eastham memcpy(node->name, name, node->namelen + 1); 317575a2bbee30d70a1940077a5b699aaf93cb4e2cdMike Lockwood node_find_actual_name(node); 31811ccdb3be67b22f677065715ace68aabf371acc7Paul Eastham return node->name; 31911ccdb3be67b22f677065715ace68aabf371acc7Paul Eastham} 32011ccdb3be67b22f677065715ace68aabf371acc7Paul Eastham 32103ee9479a4ed67689b9bbccda20c60800a38b178Brian Swetlandvoid fuse_init(struct fuse *fuse, int fd, const char *path) 32203ee9479a4ed67689b9bbccda20c60800a38b178Brian Swetland{ 32303ee9479a4ed67689b9bbccda20c60800a38b178Brian Swetland fuse->fd = fd; 32403ee9479a4ed67689b9bbccda20c60800a38b178Brian Swetland fuse->next_node_id = 2; 32503ee9479a4ed67689b9bbccda20c60800a38b178Brian Swetland fuse->next_generation = 0; 32603ee9479a4ed67689b9bbccda20c60800a38b178Brian Swetland 32703ee9479a4ed67689b9bbccda20c60800a38b178Brian Swetland fuse->all = &fuse->root; 32803ee9479a4ed67689b9bbccda20c60800a38b178Brian Swetland 32903ee9479a4ed67689b9bbccda20c60800a38b178Brian Swetland fuse->root.nid = FUSE_ROOT_ID; /* 1 */ 33003ee9479a4ed67689b9bbccda20c60800a38b178Brian Swetland fuse->root.next = 0; 33103ee9479a4ed67689b9bbccda20c60800a38b178Brian Swetland fuse->root.child = 0; 33203ee9479a4ed67689b9bbccda20c60800a38b178Brian Swetland fuse->root.parent = 0; 33303ee9479a4ed67689b9bbccda20c60800a38b178Brian Swetland 33403ee9479a4ed67689b9bbccda20c60800a38b178Brian Swetland fuse->root.all = 0; 33503ee9479a4ed67689b9bbccda20c60800a38b178Brian Swetland fuse->root.refcount = 2; 33603ee9479a4ed67689b9bbccda20c60800a38b178Brian Swetland 33711ccdb3be67b22f677065715ace68aabf371acc7Paul Eastham fuse->root.name = 0; 33811ccdb3be67b22f677065715ace68aabf371acc7Paul Eastham rename_node(&fuse->root, path); 33903ee9479a4ed67689b9bbccda20c60800a38b178Brian Swetland} 34003ee9479a4ed67689b9bbccda20c60800a38b178Brian Swetland 34103ee9479a4ed67689b9bbccda20c60800a38b178Brian Swetlandstatic inline void *id_to_ptr(__u64 nid) 34203ee9479a4ed67689b9bbccda20c60800a38b178Brian Swetland{ 34303ee9479a4ed67689b9bbccda20c60800a38b178Brian Swetland return (void *) nid; 34403ee9479a4ed67689b9bbccda20c60800a38b178Brian Swetland} 34503ee9479a4ed67689b9bbccda20c60800a38b178Brian Swetland 34603ee9479a4ed67689b9bbccda20c60800a38b178Brian Swetlandstatic inline __u64 ptr_to_id(void *ptr) 34703ee9479a4ed67689b9bbccda20c60800a38b178Brian Swetland{ 34803ee9479a4ed67689b9bbccda20c60800a38b178Brian Swetland return (__u64) ptr; 34903ee9479a4ed67689b9bbccda20c60800a38b178Brian Swetland} 35003ee9479a4ed67689b9bbccda20c60800a38b178Brian Swetland 35103ee9479a4ed67689b9bbccda20c60800a38b178Brian Swetland 35203ee9479a4ed67689b9bbccda20c60800a38b178Brian Swetlandstruct node *lookup_by_inode(struct fuse *fuse, __u64 nid) 35303ee9479a4ed67689b9bbccda20c60800a38b178Brian Swetland{ 35403ee9479a4ed67689b9bbccda20c60800a38b178Brian Swetland if (nid == FUSE_ROOT_ID) { 35503ee9479a4ed67689b9bbccda20c60800a38b178Brian Swetland return &fuse->root; 35603ee9479a4ed67689b9bbccda20c60800a38b178Brian Swetland } else { 35703ee9479a4ed67689b9bbccda20c60800a38b178Brian Swetland return id_to_ptr(nid); 35803ee9479a4ed67689b9bbccda20c60800a38b178Brian Swetland } 35903ee9479a4ed67689b9bbccda20c60800a38b178Brian Swetland} 36003ee9479a4ed67689b9bbccda20c60800a38b178Brian Swetland 36103ee9479a4ed67689b9bbccda20c60800a38b178Brian Swetlandstruct node *lookup_child_by_name(struct node *node, const char *name) 36203ee9479a4ed67689b9bbccda20c60800a38b178Brian Swetland{ 36303ee9479a4ed67689b9bbccda20c60800a38b178Brian Swetland for (node = node->child; node; node = node->next) { 36403ee9479a4ed67689b9bbccda20c60800a38b178Brian Swetland if (!strcmp(name, node->name)) { 36503ee9479a4ed67689b9bbccda20c60800a38b178Brian Swetland return node; 36603ee9479a4ed67689b9bbccda20c60800a38b178Brian Swetland } 36703ee9479a4ed67689b9bbccda20c60800a38b178Brian Swetland } 36803ee9479a4ed67689b9bbccda20c60800a38b178Brian Swetland return 0; 36903ee9479a4ed67689b9bbccda20c60800a38b178Brian Swetland} 37003ee9479a4ed67689b9bbccda20c60800a38b178Brian Swetland 37103ee9479a4ed67689b9bbccda20c60800a38b178Brian Swetlandstruct node *lookup_child_by_inode(struct node *node, __u64 nid) 37203ee9479a4ed67689b9bbccda20c60800a38b178Brian Swetland{ 37303ee9479a4ed67689b9bbccda20c60800a38b178Brian Swetland for (node = node->child; node; node = node->next) { 37403ee9479a4ed67689b9bbccda20c60800a38b178Brian Swetland if (node->nid == nid) { 37503ee9479a4ed67689b9bbccda20c60800a38b178Brian Swetland return node; 37603ee9479a4ed67689b9bbccda20c60800a38b178Brian Swetland } 37703ee9479a4ed67689b9bbccda20c60800a38b178Brian Swetland } 37803ee9479a4ed67689b9bbccda20c60800a38b178Brian Swetland return 0; 37903ee9479a4ed67689b9bbccda20c60800a38b178Brian Swetland} 38003ee9479a4ed67689b9bbccda20c60800a38b178Brian Swetland 38177085c570e7db2ea4a52e3a0fec5100687c31b46Paul Easthamstatic void dec_refcount(struct node *node) { 38277085c570e7db2ea4a52e3a0fec5100687c31b46Paul Eastham if (node->refcount > 0) { 38377085c570e7db2ea4a52e3a0fec5100687c31b46Paul Eastham node->refcount--; 38477085c570e7db2ea4a52e3a0fec5100687c31b46Paul Eastham TRACE("dec_refcount %p(%s) -> %d\n", node, node->name, node->refcount); 38577085c570e7db2ea4a52e3a0fec5100687c31b46Paul Eastham } else { 38677085c570e7db2ea4a52e3a0fec5100687c31b46Paul Eastham ERROR("Zero refcnt %p\n", node); 38777085c570e7db2ea4a52e3a0fec5100687c31b46Paul Eastham } 38877085c570e7db2ea4a52e3a0fec5100687c31b46Paul Eastham } 38977085c570e7db2ea4a52e3a0fec5100687c31b46Paul Eastham 39011ccdb3be67b22f677065715ace68aabf371acc7Paul Easthamstatic struct node *remove_child(struct node *parent, __u64 nid) 39111ccdb3be67b22f677065715ace68aabf371acc7Paul Eastham{ 39211ccdb3be67b22f677065715ace68aabf371acc7Paul Eastham struct node *prev = 0; 39311ccdb3be67b22f677065715ace68aabf371acc7Paul Eastham struct node *node; 39411ccdb3be67b22f677065715ace68aabf371acc7Paul Eastham 39511ccdb3be67b22f677065715ace68aabf371acc7Paul Eastham for (node = parent->child; node; node = node->next) { 39611ccdb3be67b22f677065715ace68aabf371acc7Paul Eastham if (node->nid == nid) { 39711ccdb3be67b22f677065715ace68aabf371acc7Paul Eastham if (prev) { 39811ccdb3be67b22f677065715ace68aabf371acc7Paul Eastham prev->next = node->next; 39911ccdb3be67b22f677065715ace68aabf371acc7Paul Eastham } else { 40011ccdb3be67b22f677065715ace68aabf371acc7Paul Eastham parent->child = node->next; 40111ccdb3be67b22f677065715ace68aabf371acc7Paul Eastham } 40211ccdb3be67b22f677065715ace68aabf371acc7Paul Eastham node->next = 0; 40311ccdb3be67b22f677065715ace68aabf371acc7Paul Eastham node->parent = 0; 40477085c570e7db2ea4a52e3a0fec5100687c31b46Paul Eastham dec_refcount(parent); 40511ccdb3be67b22f677065715ace68aabf371acc7Paul Eastham return node; 40611ccdb3be67b22f677065715ace68aabf371acc7Paul Eastham } 40711ccdb3be67b22f677065715ace68aabf371acc7Paul Eastham prev = node; 40811ccdb3be67b22f677065715ace68aabf371acc7Paul Eastham } 40911ccdb3be67b22f677065715ace68aabf371acc7Paul Eastham return 0; 41011ccdb3be67b22f677065715ace68aabf371acc7Paul Eastham} 41111ccdb3be67b22f677065715ace68aabf371acc7Paul Eastham 41203ee9479a4ed67689b9bbccda20c60800a38b178Brian Swetlandstruct node *node_lookup(struct fuse *fuse, struct node *parent, const char *name, 41303ee9479a4ed67689b9bbccda20c60800a38b178Brian Swetland struct fuse_attr *attr) 41403ee9479a4ed67689b9bbccda20c60800a38b178Brian Swetland{ 41503ee9479a4ed67689b9bbccda20c60800a38b178Brian Swetland int res; 41603ee9479a4ed67689b9bbccda20c60800a38b178Brian Swetland struct stat s; 41703ee9479a4ed67689b9bbccda20c60800a38b178Brian Swetland char *path, buffer[PATH_BUFFER_SIZE]; 41803ee9479a4ed67689b9bbccda20c60800a38b178Brian Swetland struct node *node; 41903ee9479a4ed67689b9bbccda20c60800a38b178Brian Swetland 42003ee9479a4ed67689b9bbccda20c60800a38b178Brian Swetland path = node_get_path(parent, buffer, name); 42103ee9479a4ed67689b9bbccda20c60800a38b178Brian Swetland /* XXX error? */ 42203ee9479a4ed67689b9bbccda20c60800a38b178Brian Swetland 42303ee9479a4ed67689b9bbccda20c60800a38b178Brian Swetland res = lstat(path, &s); 42403ee9479a4ed67689b9bbccda20c60800a38b178Brian Swetland if (res < 0) 42503ee9479a4ed67689b9bbccda20c60800a38b178Brian Swetland return 0; 42603ee9479a4ed67689b9bbccda20c60800a38b178Brian Swetland 42703ee9479a4ed67689b9bbccda20c60800a38b178Brian Swetland node = lookup_child_by_name(parent, name); 42803ee9479a4ed67689b9bbccda20c60800a38b178Brian Swetland if (!node) { 42903ee9479a4ed67689b9bbccda20c60800a38b178Brian Swetland node = node_create(parent, name, fuse->next_node_id++, fuse->next_generation++); 43003ee9479a4ed67689b9bbccda20c60800a38b178Brian Swetland if (!node) 43103ee9479a4ed67689b9bbccda20c60800a38b178Brian Swetland return 0; 43203ee9479a4ed67689b9bbccda20c60800a38b178Brian Swetland node->nid = ptr_to_id(node); 43303ee9479a4ed67689b9bbccda20c60800a38b178Brian Swetland node->all = fuse->all; 43403ee9479a4ed67689b9bbccda20c60800a38b178Brian Swetland fuse->all = node; 43503ee9479a4ed67689b9bbccda20c60800a38b178Brian Swetland } 43603ee9479a4ed67689b9bbccda20c60800a38b178Brian Swetland 43703ee9479a4ed67689b9bbccda20c60800a38b178Brian Swetland attr_from_stat(attr, &s); 43803ee9479a4ed67689b9bbccda20c60800a38b178Brian Swetland attr->ino = node->nid; 43903ee9479a4ed67689b9bbccda20c60800a38b178Brian Swetland 44003ee9479a4ed67689b9bbccda20c60800a38b178Brian Swetland return node; 44103ee9479a4ed67689b9bbccda20c60800a38b178Brian Swetland} 44203ee9479a4ed67689b9bbccda20c60800a38b178Brian Swetland 44303ee9479a4ed67689b9bbccda20c60800a38b178Brian Swetlandvoid node_release(struct node *node) 44403ee9479a4ed67689b9bbccda20c60800a38b178Brian Swetland{ 44503ee9479a4ed67689b9bbccda20c60800a38b178Brian Swetland TRACE("RELEASE %p (%s) rc=%d\n", node, node->name, node->refcount); 44677085c570e7db2ea4a52e3a0fec5100687c31b46Paul Eastham dec_refcount(node); 44703ee9479a4ed67689b9bbccda20c60800a38b178Brian Swetland if (node->refcount == 0) { 44803ee9479a4ed67689b9bbccda20c60800a38b178Brian Swetland if (node->parent->child == node) { 44903ee9479a4ed67689b9bbccda20c60800a38b178Brian Swetland node->parent->child = node->parent->child->next; 45003ee9479a4ed67689b9bbccda20c60800a38b178Brian Swetland } else { 45103ee9479a4ed67689b9bbccda20c60800a38b178Brian Swetland struct node *node2; 45203ee9479a4ed67689b9bbccda20c60800a38b178Brian Swetland 45303ee9479a4ed67689b9bbccda20c60800a38b178Brian Swetland node2 = node->parent->child; 45403ee9479a4ed67689b9bbccda20c60800a38b178Brian Swetland while (node2->next != node) 45503ee9479a4ed67689b9bbccda20c60800a38b178Brian Swetland node2 = node2->next; 45603ee9479a4ed67689b9bbccda20c60800a38b178Brian Swetland node2->next = node->next; 45703ee9479a4ed67689b9bbccda20c60800a38b178Brian Swetland } 45803ee9479a4ed67689b9bbccda20c60800a38b178Brian Swetland 45903ee9479a4ed67689b9bbccda20c60800a38b178Brian Swetland TRACE("DESTROY %p (%s)\n", node, node->name); 46003ee9479a4ed67689b9bbccda20c60800a38b178Brian Swetland 46103ee9479a4ed67689b9bbccda20c60800a38b178Brian Swetland node_release(node->parent); 46203ee9479a4ed67689b9bbccda20c60800a38b178Brian Swetland 46303ee9479a4ed67689b9bbccda20c60800a38b178Brian Swetland node->parent = 0; 46403ee9479a4ed67689b9bbccda20c60800a38b178Brian Swetland node->next = 0; 46503ee9479a4ed67689b9bbccda20c60800a38b178Brian Swetland 46603ee9479a4ed67689b9bbccda20c60800a38b178Brian Swetland /* TODO: remove debugging - poison memory */ 46711ccdb3be67b22f677065715ace68aabf371acc7Paul Eastham memset(node->name, 0xef, node->namelen); 46811ccdb3be67b22f677065715ace68aabf371acc7Paul Eastham free(node->name); 469575a2bbee30d70a1940077a5b699aaf93cb4e2cdMike Lockwood free(node->actual_name); 47077085c570e7db2ea4a52e3a0fec5100687c31b46Paul Eastham memset(node, 0xfc, sizeof(*node)); 47103ee9479a4ed67689b9bbccda20c60800a38b178Brian Swetland free(node); 47203ee9479a4ed67689b9bbccda20c60800a38b178Brian Swetland } 47303ee9479a4ed67689b9bbccda20c60800a38b178Brian Swetland} 47403ee9479a4ed67689b9bbccda20c60800a38b178Brian Swetland 47503ee9479a4ed67689b9bbccda20c60800a38b178Brian Swetlandvoid fuse_status(struct fuse *fuse, __u64 unique, int err) 47603ee9479a4ed67689b9bbccda20c60800a38b178Brian Swetland{ 47703ee9479a4ed67689b9bbccda20c60800a38b178Brian Swetland struct fuse_out_header hdr; 47803ee9479a4ed67689b9bbccda20c60800a38b178Brian Swetland hdr.len = sizeof(hdr); 47903ee9479a4ed67689b9bbccda20c60800a38b178Brian Swetland hdr.error = err; 48003ee9479a4ed67689b9bbccda20c60800a38b178Brian Swetland hdr.unique = unique; 48103ee9479a4ed67689b9bbccda20c60800a38b178Brian Swetland if (err) { 48203ee9479a4ed67689b9bbccda20c60800a38b178Brian Swetland// ERROR("*** %d ***\n", err); 48303ee9479a4ed67689b9bbccda20c60800a38b178Brian Swetland } 48403ee9479a4ed67689b9bbccda20c60800a38b178Brian Swetland write(fuse->fd, &hdr, sizeof(hdr)); 48503ee9479a4ed67689b9bbccda20c60800a38b178Brian Swetland} 48603ee9479a4ed67689b9bbccda20c60800a38b178Brian Swetland 48703ee9479a4ed67689b9bbccda20c60800a38b178Brian Swetlandvoid fuse_reply(struct fuse *fuse, __u64 unique, void *data, int len) 48803ee9479a4ed67689b9bbccda20c60800a38b178Brian Swetland{ 48903ee9479a4ed67689b9bbccda20c60800a38b178Brian Swetland struct fuse_out_header hdr; 49003ee9479a4ed67689b9bbccda20c60800a38b178Brian Swetland struct iovec vec[2]; 49103ee9479a4ed67689b9bbccda20c60800a38b178Brian Swetland int res; 49203ee9479a4ed67689b9bbccda20c60800a38b178Brian Swetland 49303ee9479a4ed67689b9bbccda20c60800a38b178Brian Swetland hdr.len = len + sizeof(hdr); 49403ee9479a4ed67689b9bbccda20c60800a38b178Brian Swetland hdr.error = 0; 49503ee9479a4ed67689b9bbccda20c60800a38b178Brian Swetland hdr.unique = unique; 49603ee9479a4ed67689b9bbccda20c60800a38b178Brian Swetland 49703ee9479a4ed67689b9bbccda20c60800a38b178Brian Swetland vec[0].iov_base = &hdr; 49803ee9479a4ed67689b9bbccda20c60800a38b178Brian Swetland vec[0].iov_len = sizeof(hdr); 49903ee9479a4ed67689b9bbccda20c60800a38b178Brian Swetland vec[1].iov_base = data; 50003ee9479a4ed67689b9bbccda20c60800a38b178Brian Swetland vec[1].iov_len = len; 50103ee9479a4ed67689b9bbccda20c60800a38b178Brian Swetland 50203ee9479a4ed67689b9bbccda20c60800a38b178Brian Swetland res = writev(fuse->fd, vec, 2); 50303ee9479a4ed67689b9bbccda20c60800a38b178Brian Swetland if (res < 0) { 50403ee9479a4ed67689b9bbccda20c60800a38b178Brian Swetland ERROR("*** REPLY FAILED *** %d\n", errno); 50503ee9479a4ed67689b9bbccda20c60800a38b178Brian Swetland } 50603ee9479a4ed67689b9bbccda20c60800a38b178Brian Swetland} 50703ee9479a4ed67689b9bbccda20c60800a38b178Brian Swetland 50803ee9479a4ed67689b9bbccda20c60800a38b178Brian Swetlandvoid lookup_entry(struct fuse *fuse, struct node *node, 50903ee9479a4ed67689b9bbccda20c60800a38b178Brian Swetland const char *name, __u64 unique) 51003ee9479a4ed67689b9bbccda20c60800a38b178Brian Swetland{ 51103ee9479a4ed67689b9bbccda20c60800a38b178Brian Swetland struct fuse_entry_out out; 51203ee9479a4ed67689b9bbccda20c60800a38b178Brian Swetland 51303ee9479a4ed67689b9bbccda20c60800a38b178Brian Swetland memset(&out, 0, sizeof(out)); 51403ee9479a4ed67689b9bbccda20c60800a38b178Brian Swetland 51503ee9479a4ed67689b9bbccda20c60800a38b178Brian Swetland node = node_lookup(fuse, node, name, &out.attr); 51603ee9479a4ed67689b9bbccda20c60800a38b178Brian Swetland if (!node) { 51703ee9479a4ed67689b9bbccda20c60800a38b178Brian Swetland fuse_status(fuse, unique, -ENOENT); 51803ee9479a4ed67689b9bbccda20c60800a38b178Brian Swetland return; 51903ee9479a4ed67689b9bbccda20c60800a38b178Brian Swetland } 52003ee9479a4ed67689b9bbccda20c60800a38b178Brian Swetland 52103ee9479a4ed67689b9bbccda20c60800a38b178Brian Swetland node->refcount++; 52203ee9479a4ed67689b9bbccda20c60800a38b178Brian Swetland// fprintf(stderr,"ACQUIRE %p (%s) rc=%d\n", node, node->name, node->refcount); 52303ee9479a4ed67689b9bbccda20c60800a38b178Brian Swetland out.nodeid = node->nid; 52403ee9479a4ed67689b9bbccda20c60800a38b178Brian Swetland out.generation = node->gen; 52503ee9479a4ed67689b9bbccda20c60800a38b178Brian Swetland out.entry_valid = 10; 52603ee9479a4ed67689b9bbccda20c60800a38b178Brian Swetland out.attr_valid = 10; 52703ee9479a4ed67689b9bbccda20c60800a38b178Brian Swetland 52803ee9479a4ed67689b9bbccda20c60800a38b178Brian Swetland fuse_reply(fuse, unique, &out, sizeof(out)); 52903ee9479a4ed67689b9bbccda20c60800a38b178Brian Swetland} 53003ee9479a4ed67689b9bbccda20c60800a38b178Brian Swetland 53103ee9479a4ed67689b9bbccda20c60800a38b178Brian Swetlandvoid handle_fuse_request(struct fuse *fuse, struct fuse_in_header *hdr, void *data, unsigned len) 53203ee9479a4ed67689b9bbccda20c60800a38b178Brian Swetland{ 53303ee9479a4ed67689b9bbccda20c60800a38b178Brian Swetland struct node *node; 53403ee9479a4ed67689b9bbccda20c60800a38b178Brian Swetland 53503ee9479a4ed67689b9bbccda20c60800a38b178Brian Swetland if ((len < sizeof(*hdr)) || (hdr->len != len)) { 53603ee9479a4ed67689b9bbccda20c60800a38b178Brian Swetland ERROR("malformed header\n"); 53703ee9479a4ed67689b9bbccda20c60800a38b178Brian Swetland return; 53803ee9479a4ed67689b9bbccda20c60800a38b178Brian Swetland } 53903ee9479a4ed67689b9bbccda20c60800a38b178Brian Swetland 54003ee9479a4ed67689b9bbccda20c60800a38b178Brian Swetland len -= hdr->len; 54103ee9479a4ed67689b9bbccda20c60800a38b178Brian Swetland 54203ee9479a4ed67689b9bbccda20c60800a38b178Brian Swetland if (hdr->nodeid) { 54303ee9479a4ed67689b9bbccda20c60800a38b178Brian Swetland node = lookup_by_inode(fuse, hdr->nodeid); 54403ee9479a4ed67689b9bbccda20c60800a38b178Brian Swetland if (!node) { 54503ee9479a4ed67689b9bbccda20c60800a38b178Brian Swetland fuse_status(fuse, hdr->unique, -ENOENT); 54603ee9479a4ed67689b9bbccda20c60800a38b178Brian Swetland return; 54703ee9479a4ed67689b9bbccda20c60800a38b178Brian Swetland } 54803ee9479a4ed67689b9bbccda20c60800a38b178Brian Swetland } else { 54903ee9479a4ed67689b9bbccda20c60800a38b178Brian Swetland node = 0; 55003ee9479a4ed67689b9bbccda20c60800a38b178Brian Swetland } 55103ee9479a4ed67689b9bbccda20c60800a38b178Brian Swetland 55203ee9479a4ed67689b9bbccda20c60800a38b178Brian Swetland switch (hdr->opcode) { 55303ee9479a4ed67689b9bbccda20c60800a38b178Brian Swetland case FUSE_LOOKUP: { /* bytez[] -> entry_out */ 55403ee9479a4ed67689b9bbccda20c60800a38b178Brian Swetland TRACE("LOOKUP %llx %s\n", hdr->nodeid, (char*) data); 55503ee9479a4ed67689b9bbccda20c60800a38b178Brian Swetland lookup_entry(fuse, node, (char*) data, hdr->unique); 55603ee9479a4ed67689b9bbccda20c60800a38b178Brian Swetland return; 55703ee9479a4ed67689b9bbccda20c60800a38b178Brian Swetland } 55803ee9479a4ed67689b9bbccda20c60800a38b178Brian Swetland case FUSE_FORGET: { 55903ee9479a4ed67689b9bbccda20c60800a38b178Brian Swetland struct fuse_forget_in *req = data; 56003ee9479a4ed67689b9bbccda20c60800a38b178Brian Swetland TRACE("FORGET %llx (%s) #%lld\n", hdr->nodeid, node->name, req->nlookup); 56103ee9479a4ed67689b9bbccda20c60800a38b178Brian Swetland /* no reply */ 56203ee9479a4ed67689b9bbccda20c60800a38b178Brian Swetland while (req->nlookup--) 56303ee9479a4ed67689b9bbccda20c60800a38b178Brian Swetland node_release(node); 56403ee9479a4ed67689b9bbccda20c60800a38b178Brian Swetland return; 56503ee9479a4ed67689b9bbccda20c60800a38b178Brian Swetland } 56603ee9479a4ed67689b9bbccda20c60800a38b178Brian Swetland case FUSE_GETATTR: { /* getattr_in -> attr_out */ 56703ee9479a4ed67689b9bbccda20c60800a38b178Brian Swetland struct fuse_getattr_in *req = data; 56803ee9479a4ed67689b9bbccda20c60800a38b178Brian Swetland struct fuse_attr_out out; 56903ee9479a4ed67689b9bbccda20c60800a38b178Brian Swetland 57011ccdb3be67b22f677065715ace68aabf371acc7Paul Eastham TRACE("GETATTR flags=%x fh=%llx\n", req->getattr_flags, req->fh); 57103ee9479a4ed67689b9bbccda20c60800a38b178Brian Swetland 57203ee9479a4ed67689b9bbccda20c60800a38b178Brian Swetland memset(&out, 0, sizeof(out)); 57303ee9479a4ed67689b9bbccda20c60800a38b178Brian Swetland node_get_attr(node, &out.attr); 57403ee9479a4ed67689b9bbccda20c60800a38b178Brian Swetland out.attr_valid = 10; 57503ee9479a4ed67689b9bbccda20c60800a38b178Brian Swetland 57603ee9479a4ed67689b9bbccda20c60800a38b178Brian Swetland fuse_reply(fuse, hdr->unique, &out, sizeof(out)); 57703ee9479a4ed67689b9bbccda20c60800a38b178Brian Swetland return; 57803ee9479a4ed67689b9bbccda20c60800a38b178Brian Swetland } 57903ee9479a4ed67689b9bbccda20c60800a38b178Brian Swetland case FUSE_SETATTR: { /* setattr_in -> attr_out */ 58003ee9479a4ed67689b9bbccda20c60800a38b178Brian Swetland struct fuse_setattr_in *req = data; 58103ee9479a4ed67689b9bbccda20c60800a38b178Brian Swetland struct fuse_attr_out out; 582f43219e0b1022b257499289ceb951f6a1a44bf9cPaul Eastham char *path, buffer[PATH_BUFFER_SIZE]; 583f43219e0b1022b257499289ceb951f6a1a44bf9cPaul Eastham int res = 0; 584f43219e0b1022b257499289ceb951f6a1a44bf9cPaul Eastham 58503ee9479a4ed67689b9bbccda20c60800a38b178Brian Swetland TRACE("SETATTR fh=%llx id=%llx valid=%x\n", 58603ee9479a4ed67689b9bbccda20c60800a38b178Brian Swetland req->fh, hdr->nodeid, req->valid); 58703ee9479a4ed67689b9bbccda20c60800a38b178Brian Swetland 588f43219e0b1022b257499289ceb951f6a1a44bf9cPaul Eastham /* XXX: incomplete implementation -- truncate only. chmod/chown 589f43219e0b1022b257499289ceb951f6a1a44bf9cPaul Eastham * should NEVER be implemented. */ 590f43219e0b1022b257499289ceb951f6a1a44bf9cPaul Eastham 591f43219e0b1022b257499289ceb951f6a1a44bf9cPaul Eastham path = node_get_path(node, buffer, 0); 592f43219e0b1022b257499289ceb951f6a1a44bf9cPaul Eastham if (req->valid & FATTR_SIZE) 593f43219e0b1022b257499289ceb951f6a1a44bf9cPaul Eastham res = truncate(path, req->size); 59403ee9479a4ed67689b9bbccda20c60800a38b178Brian Swetland 59503ee9479a4ed67689b9bbccda20c60800a38b178Brian Swetland memset(&out, 0, sizeof(out)); 59603ee9479a4ed67689b9bbccda20c60800a38b178Brian Swetland node_get_attr(node, &out.attr); 59703ee9479a4ed67689b9bbccda20c60800a38b178Brian Swetland out.attr_valid = 10; 598f43219e0b1022b257499289ceb951f6a1a44bf9cPaul Eastham 599f43219e0b1022b257499289ceb951f6a1a44bf9cPaul Eastham if (res) 600f43219e0b1022b257499289ceb951f6a1a44bf9cPaul Eastham fuse_status(fuse, hdr->unique, -errno); 601f43219e0b1022b257499289ceb951f6a1a44bf9cPaul Eastham else 602f43219e0b1022b257499289ceb951f6a1a44bf9cPaul Eastham fuse_reply(fuse, hdr->unique, &out, sizeof(out)); 60303ee9479a4ed67689b9bbccda20c60800a38b178Brian Swetland return; 60403ee9479a4ed67689b9bbccda20c60800a38b178Brian Swetland } 60503ee9479a4ed67689b9bbccda20c60800a38b178Brian Swetland// case FUSE_READLINK: 60603ee9479a4ed67689b9bbccda20c60800a38b178Brian Swetland// case FUSE_SYMLINK: 60703ee9479a4ed67689b9bbccda20c60800a38b178Brian Swetland case FUSE_MKNOD: { /* mknod_in, bytez[] -> entry_out */ 60803ee9479a4ed67689b9bbccda20c60800a38b178Brian Swetland struct fuse_mknod_in *req = data; 60903ee9479a4ed67689b9bbccda20c60800a38b178Brian Swetland char *path, buffer[PATH_BUFFER_SIZE]; 61003ee9479a4ed67689b9bbccda20c60800a38b178Brian Swetland char *name = ((char*) data) + sizeof(*req); 61103ee9479a4ed67689b9bbccda20c60800a38b178Brian Swetland int res; 61251b3a2d77a3361f6088172a4a68a0111058d3aabMike Lockwood 61303ee9479a4ed67689b9bbccda20c60800a38b178Brian Swetland TRACE("MKNOD %s @ %llx\n", name, hdr->nodeid); 61403ee9479a4ed67689b9bbccda20c60800a38b178Brian Swetland path = node_get_path(node, buffer, name); 61503ee9479a4ed67689b9bbccda20c60800a38b178Brian Swetland 61603ee9479a4ed67689b9bbccda20c60800a38b178Brian Swetland req->mode = (req->mode & (~0777)) | 0664; 61703ee9479a4ed67689b9bbccda20c60800a38b178Brian Swetland res = mknod(path, req->mode, req->rdev); /* XXX perm?*/ 61803ee9479a4ed67689b9bbccda20c60800a38b178Brian Swetland if (res < 0) { 61903ee9479a4ed67689b9bbccda20c60800a38b178Brian Swetland fuse_status(fuse, hdr->unique, -errno); 62003ee9479a4ed67689b9bbccda20c60800a38b178Brian Swetland } else { 62103ee9479a4ed67689b9bbccda20c60800a38b178Brian Swetland lookup_entry(fuse, node, name, hdr->unique); 62203ee9479a4ed67689b9bbccda20c60800a38b178Brian Swetland } 62303ee9479a4ed67689b9bbccda20c60800a38b178Brian Swetland return; 62403ee9479a4ed67689b9bbccda20c60800a38b178Brian Swetland } 62503ee9479a4ed67689b9bbccda20c60800a38b178Brian Swetland case FUSE_MKDIR: { /* mkdir_in, bytez[] -> entry_out */ 62603ee9479a4ed67689b9bbccda20c60800a38b178Brian Swetland struct fuse_mkdir_in *req = data; 62703ee9479a4ed67689b9bbccda20c60800a38b178Brian Swetland struct fuse_entry_out out; 62803ee9479a4ed67689b9bbccda20c60800a38b178Brian Swetland char *path, buffer[PATH_BUFFER_SIZE]; 62903ee9479a4ed67689b9bbccda20c60800a38b178Brian Swetland char *name = ((char*) data) + sizeof(*req); 63003ee9479a4ed67689b9bbccda20c60800a38b178Brian Swetland int res; 63151b3a2d77a3361f6088172a4a68a0111058d3aabMike Lockwood 63203ee9479a4ed67689b9bbccda20c60800a38b178Brian Swetland TRACE("MKDIR %s @ %llx 0%o\n", name, hdr->nodeid, req->mode); 63303ee9479a4ed67689b9bbccda20c60800a38b178Brian Swetland path = node_get_path(node, buffer, name); 63403ee9479a4ed67689b9bbccda20c60800a38b178Brian Swetland 63503ee9479a4ed67689b9bbccda20c60800a38b178Brian Swetland req->mode = (req->mode & (~0777)) | 0775; 63603ee9479a4ed67689b9bbccda20c60800a38b178Brian Swetland res = mkdir(path, req->mode); 63703ee9479a4ed67689b9bbccda20c60800a38b178Brian Swetland if (res < 0) { 63803ee9479a4ed67689b9bbccda20c60800a38b178Brian Swetland fuse_status(fuse, hdr->unique, -errno); 63903ee9479a4ed67689b9bbccda20c60800a38b178Brian Swetland } else { 64003ee9479a4ed67689b9bbccda20c60800a38b178Brian Swetland lookup_entry(fuse, node, name, hdr->unique); 64103ee9479a4ed67689b9bbccda20c60800a38b178Brian Swetland } 64203ee9479a4ed67689b9bbccda20c60800a38b178Brian Swetland return; 64303ee9479a4ed67689b9bbccda20c60800a38b178Brian Swetland } 64403ee9479a4ed67689b9bbccda20c60800a38b178Brian Swetland case FUSE_UNLINK: { /* bytez[] -> */ 64503ee9479a4ed67689b9bbccda20c60800a38b178Brian Swetland char *path, buffer[PATH_BUFFER_SIZE]; 64603ee9479a4ed67689b9bbccda20c60800a38b178Brian Swetland int res; 64703ee9479a4ed67689b9bbccda20c60800a38b178Brian Swetland TRACE("UNLINK %s @ %llx\n", (char*) data, hdr->nodeid); 64803ee9479a4ed67689b9bbccda20c60800a38b178Brian Swetland path = node_get_path(node, buffer, (char*) data); 64903ee9479a4ed67689b9bbccda20c60800a38b178Brian Swetland res = unlink(path); 65003ee9479a4ed67689b9bbccda20c60800a38b178Brian Swetland fuse_status(fuse, hdr->unique, res ? -errno : 0); 65103ee9479a4ed67689b9bbccda20c60800a38b178Brian Swetland return; 65203ee9479a4ed67689b9bbccda20c60800a38b178Brian Swetland } 65303ee9479a4ed67689b9bbccda20c60800a38b178Brian Swetland case FUSE_RMDIR: { /* bytez[] -> */ 65403ee9479a4ed67689b9bbccda20c60800a38b178Brian Swetland char *path, buffer[PATH_BUFFER_SIZE]; 65503ee9479a4ed67689b9bbccda20c60800a38b178Brian Swetland int res; 65603ee9479a4ed67689b9bbccda20c60800a38b178Brian Swetland TRACE("RMDIR %s @ %llx\n", (char*) data, hdr->nodeid); 65703ee9479a4ed67689b9bbccda20c60800a38b178Brian Swetland path = node_get_path(node, buffer, (char*) data); 65803ee9479a4ed67689b9bbccda20c60800a38b178Brian Swetland res = rmdir(path); 65903ee9479a4ed67689b9bbccda20c60800a38b178Brian Swetland fuse_status(fuse, hdr->unique, res ? -errno : 0); 66003ee9479a4ed67689b9bbccda20c60800a38b178Brian Swetland return; 66103ee9479a4ed67689b9bbccda20c60800a38b178Brian Swetland } 66203ee9479a4ed67689b9bbccda20c60800a38b178Brian Swetland case FUSE_RENAME: { /* rename_in, oldname, newname -> */ 66303ee9479a4ed67689b9bbccda20c60800a38b178Brian Swetland struct fuse_rename_in *req = data; 66403ee9479a4ed67689b9bbccda20c60800a38b178Brian Swetland char *oldname = ((char*) data) + sizeof(*req); 66503ee9479a4ed67689b9bbccda20c60800a38b178Brian Swetland char *newname = oldname + strlen(oldname) + 1; 66603ee9479a4ed67689b9bbccda20c60800a38b178Brian Swetland char *oldpath, oldbuffer[PATH_BUFFER_SIZE]; 66703ee9479a4ed67689b9bbccda20c60800a38b178Brian Swetland char *newpath, newbuffer[PATH_BUFFER_SIZE]; 66811ccdb3be67b22f677065715ace68aabf371acc7Paul Eastham struct node *target; 66911ccdb3be67b22f677065715ace68aabf371acc7Paul Eastham struct node *newparent; 67003ee9479a4ed67689b9bbccda20c60800a38b178Brian Swetland int res; 67103ee9479a4ed67689b9bbccda20c60800a38b178Brian Swetland 67211ccdb3be67b22f677065715ace68aabf371acc7Paul Eastham TRACE("RENAME %s->%s @ %llx\n", oldname, newname, hdr->nodeid); 67311ccdb3be67b22f677065715ace68aabf371acc7Paul Eastham 67411ccdb3be67b22f677065715ace68aabf371acc7Paul Eastham target = lookup_child_by_name(node, oldname); 67511ccdb3be67b22f677065715ace68aabf371acc7Paul Eastham if (!target) { 67603ee9479a4ed67689b9bbccda20c60800a38b178Brian Swetland fuse_status(fuse, hdr->unique, -ENOENT); 67703ee9479a4ed67689b9bbccda20c60800a38b178Brian Swetland return; 67803ee9479a4ed67689b9bbccda20c60800a38b178Brian Swetland } 67903ee9479a4ed67689b9bbccda20c60800a38b178Brian Swetland oldpath = node_get_path(node, oldbuffer, oldname); 68011ccdb3be67b22f677065715ace68aabf371acc7Paul Eastham 68111ccdb3be67b22f677065715ace68aabf371acc7Paul Eastham newparent = lookup_by_inode(fuse, req->newdir); 68211ccdb3be67b22f677065715ace68aabf371acc7Paul Eastham if (!newparent) { 68311ccdb3be67b22f677065715ace68aabf371acc7Paul Eastham fuse_status(fuse, hdr->unique, -ENOENT); 68411ccdb3be67b22f677065715ace68aabf371acc7Paul Eastham return; 68511ccdb3be67b22f677065715ace68aabf371acc7Paul Eastham } 686575a2bbee30d70a1940077a5b699aaf93cb4e2cdMike Lockwood if (newparent == node) { 687575a2bbee30d70a1940077a5b699aaf93cb4e2cdMike Lockwood /* Special case for renaming a file where destination 688575a2bbee30d70a1940077a5b699aaf93cb4e2cdMike Lockwood * is same path differing only by case. 689575a2bbee30d70a1940077a5b699aaf93cb4e2cdMike Lockwood * In this case we don't want to look for a case insensitive match. 690575a2bbee30d70a1940077a5b699aaf93cb4e2cdMike Lockwood * This allows commands like "mv foo FOO" to work as expected. 691575a2bbee30d70a1940077a5b699aaf93cb4e2cdMike Lockwood */ 692575a2bbee30d70a1940077a5b699aaf93cb4e2cdMike Lockwood newpath = do_node_get_path(newparent, newbuffer, newname, NO_CASE_SENSITIVE_MATCH); 693575a2bbee30d70a1940077a5b699aaf93cb4e2cdMike Lockwood } else { 694575a2bbee30d70a1940077a5b699aaf93cb4e2cdMike Lockwood newpath = node_get_path(newparent, newbuffer, newname); 695575a2bbee30d70a1940077a5b699aaf93cb4e2cdMike Lockwood } 69611ccdb3be67b22f677065715ace68aabf371acc7Paul Eastham 69711ccdb3be67b22f677065715ace68aabf371acc7Paul Eastham if (!remove_child(node, target->nid)) { 69811ccdb3be67b22f677065715ace68aabf371acc7Paul Eastham ERROR("RENAME remove_child not found"); 69911ccdb3be67b22f677065715ace68aabf371acc7Paul Eastham fuse_status(fuse, hdr->unique, -ENOENT); 70011ccdb3be67b22f677065715ace68aabf371acc7Paul Eastham return; 70111ccdb3be67b22f677065715ace68aabf371acc7Paul Eastham } 70211ccdb3be67b22f677065715ace68aabf371acc7Paul Eastham if (!rename_node(target, newname)) { 70311ccdb3be67b22f677065715ace68aabf371acc7Paul Eastham fuse_status(fuse, hdr->unique, -ENOMEM); 70411ccdb3be67b22f677065715ace68aabf371acc7Paul Eastham return; 70511ccdb3be67b22f677065715ace68aabf371acc7Paul Eastham } 70611ccdb3be67b22f677065715ace68aabf371acc7Paul Eastham add_node_to_parent(target, newparent); 70703ee9479a4ed67689b9bbccda20c60800a38b178Brian Swetland 70803ee9479a4ed67689b9bbccda20c60800a38b178Brian Swetland res = rename(oldpath, newpath); 70911ccdb3be67b22f677065715ace68aabf371acc7Paul Eastham TRACE("RENAME result %d\n", res); 71011ccdb3be67b22f677065715ace68aabf371acc7Paul Eastham 71103ee9479a4ed67689b9bbccda20c60800a38b178Brian Swetland fuse_status(fuse, hdr->unique, res ? -errno : 0); 71203ee9479a4ed67689b9bbccda20c60800a38b178Brian Swetland return; 71303ee9479a4ed67689b9bbccda20c60800a38b178Brian Swetland } 71403ee9479a4ed67689b9bbccda20c60800a38b178Brian Swetland// case FUSE_LINK: 71503ee9479a4ed67689b9bbccda20c60800a38b178Brian Swetland case FUSE_OPEN: { /* open_in -> open_out */ 71603ee9479a4ed67689b9bbccda20c60800a38b178Brian Swetland struct fuse_open_in *req = data; 71703ee9479a4ed67689b9bbccda20c60800a38b178Brian Swetland struct fuse_open_out out; 71803ee9479a4ed67689b9bbccda20c60800a38b178Brian Swetland char *path, buffer[PATH_BUFFER_SIZE]; 71903ee9479a4ed67689b9bbccda20c60800a38b178Brian Swetland struct handle *h; 72003ee9479a4ed67689b9bbccda20c60800a38b178Brian Swetland 72103ee9479a4ed67689b9bbccda20c60800a38b178Brian Swetland h = malloc(sizeof(*h)); 72203ee9479a4ed67689b9bbccda20c60800a38b178Brian Swetland if (!h) { 72303ee9479a4ed67689b9bbccda20c60800a38b178Brian Swetland fuse_status(fuse, hdr->unique, -ENOMEM); 72403ee9479a4ed67689b9bbccda20c60800a38b178Brian Swetland return; 72503ee9479a4ed67689b9bbccda20c60800a38b178Brian Swetland } 72603ee9479a4ed67689b9bbccda20c60800a38b178Brian Swetland 72703ee9479a4ed67689b9bbccda20c60800a38b178Brian Swetland path = node_get_path(node, buffer, 0); 72803ee9479a4ed67689b9bbccda20c60800a38b178Brian Swetland TRACE("OPEN %llx '%s' 0%o fh=%p\n", hdr->nodeid, path, req->flags, h); 72903ee9479a4ed67689b9bbccda20c60800a38b178Brian Swetland h->fd = open(path, req->flags); 73003ee9479a4ed67689b9bbccda20c60800a38b178Brian Swetland if (h->fd < 0) { 73103ee9479a4ed67689b9bbccda20c60800a38b178Brian Swetland ERROR("ERROR\n"); 73203ee9479a4ed67689b9bbccda20c60800a38b178Brian Swetland fuse_status(fuse, hdr->unique, errno); 73303ee9479a4ed67689b9bbccda20c60800a38b178Brian Swetland free(h); 73403ee9479a4ed67689b9bbccda20c60800a38b178Brian Swetland return; 73503ee9479a4ed67689b9bbccda20c60800a38b178Brian Swetland } 73603ee9479a4ed67689b9bbccda20c60800a38b178Brian Swetland out.fh = ptr_to_id(h); 73703ee9479a4ed67689b9bbccda20c60800a38b178Brian Swetland out.open_flags = 0; 73803ee9479a4ed67689b9bbccda20c60800a38b178Brian Swetland out.padding = 0; 73903ee9479a4ed67689b9bbccda20c60800a38b178Brian Swetland fuse_reply(fuse, hdr->unique, &out, sizeof(out)); 74003ee9479a4ed67689b9bbccda20c60800a38b178Brian Swetland return; 74103ee9479a4ed67689b9bbccda20c60800a38b178Brian Swetland } 74203ee9479a4ed67689b9bbccda20c60800a38b178Brian Swetland case FUSE_READ: { /* read_in -> byte[] */ 74303ee9479a4ed67689b9bbccda20c60800a38b178Brian Swetland char buffer[128 * 1024]; 74403ee9479a4ed67689b9bbccda20c60800a38b178Brian Swetland struct fuse_read_in *req = data; 74503ee9479a4ed67689b9bbccda20c60800a38b178Brian Swetland struct handle *h = id_to_ptr(req->fh); 74603ee9479a4ed67689b9bbccda20c60800a38b178Brian Swetland int res; 74703ee9479a4ed67689b9bbccda20c60800a38b178Brian Swetland TRACE("READ %p(%d) %u@%llu\n", h, h->fd, req->size, req->offset); 74803ee9479a4ed67689b9bbccda20c60800a38b178Brian Swetland if (req->size > sizeof(buffer)) { 74903ee9479a4ed67689b9bbccda20c60800a38b178Brian Swetland fuse_status(fuse, hdr->unique, -EINVAL); 75003ee9479a4ed67689b9bbccda20c60800a38b178Brian Swetland return; 75103ee9479a4ed67689b9bbccda20c60800a38b178Brian Swetland } 75290749774edd0c0cab327b62ce43cb4dfd33e897dKenny Root res = pread64(h->fd, buffer, req->size, req->offset); 75303ee9479a4ed67689b9bbccda20c60800a38b178Brian Swetland if (res < 0) { 75403ee9479a4ed67689b9bbccda20c60800a38b178Brian Swetland fuse_status(fuse, hdr->unique, errno); 75503ee9479a4ed67689b9bbccda20c60800a38b178Brian Swetland return; 75603ee9479a4ed67689b9bbccda20c60800a38b178Brian Swetland } 75703ee9479a4ed67689b9bbccda20c60800a38b178Brian Swetland fuse_reply(fuse, hdr->unique, buffer, res); 75803ee9479a4ed67689b9bbccda20c60800a38b178Brian Swetland return; 75903ee9479a4ed67689b9bbccda20c60800a38b178Brian Swetland } 76003ee9479a4ed67689b9bbccda20c60800a38b178Brian Swetland case FUSE_WRITE: { /* write_in, byte[write_in.size] -> write_out */ 76103ee9479a4ed67689b9bbccda20c60800a38b178Brian Swetland struct fuse_write_in *req = data; 76203ee9479a4ed67689b9bbccda20c60800a38b178Brian Swetland struct fuse_write_out out; 76303ee9479a4ed67689b9bbccda20c60800a38b178Brian Swetland struct handle *h = id_to_ptr(req->fh); 76403ee9479a4ed67689b9bbccda20c60800a38b178Brian Swetland int res; 76503ee9479a4ed67689b9bbccda20c60800a38b178Brian Swetland TRACE("WRITE %p(%d) %u@%llu\n", h, h->fd, req->size, req->offset); 76690749774edd0c0cab327b62ce43cb4dfd33e897dKenny Root res = pwrite64(h->fd, ((char*) data) + sizeof(*req), req->size, req->offset); 76703ee9479a4ed67689b9bbccda20c60800a38b178Brian Swetland if (res < 0) { 76803ee9479a4ed67689b9bbccda20c60800a38b178Brian Swetland fuse_status(fuse, hdr->unique, errno); 76903ee9479a4ed67689b9bbccda20c60800a38b178Brian Swetland return; 77003ee9479a4ed67689b9bbccda20c60800a38b178Brian Swetland } 77103ee9479a4ed67689b9bbccda20c60800a38b178Brian Swetland out.size = res; 77203ee9479a4ed67689b9bbccda20c60800a38b178Brian Swetland fuse_reply(fuse, hdr->unique, &out, sizeof(out)); 77303ee9479a4ed67689b9bbccda20c60800a38b178Brian Swetland goto oops; 77403ee9479a4ed67689b9bbccda20c60800a38b178Brian Swetland } 7754553b08d7555a103fdbe8623a9cbd826a7e413ffMike Lockwood case FUSE_STATFS: { /* getattr_in -> attr_out */ 7764553b08d7555a103fdbe8623a9cbd826a7e413ffMike Lockwood struct statfs stat; 7774553b08d7555a103fdbe8623a9cbd826a7e413ffMike Lockwood struct fuse_statfs_out out; 7784553b08d7555a103fdbe8623a9cbd826a7e413ffMike Lockwood int res; 7794553b08d7555a103fdbe8623a9cbd826a7e413ffMike Lockwood 7804553b08d7555a103fdbe8623a9cbd826a7e413ffMike Lockwood TRACE("STATFS\n"); 7814553b08d7555a103fdbe8623a9cbd826a7e413ffMike Lockwood 7824553b08d7555a103fdbe8623a9cbd826a7e413ffMike Lockwood if (statfs(fuse->root.name, &stat)) { 7834553b08d7555a103fdbe8623a9cbd826a7e413ffMike Lockwood fuse_status(fuse, hdr->unique, -errno); 7844553b08d7555a103fdbe8623a9cbd826a7e413ffMike Lockwood return; 7854553b08d7555a103fdbe8623a9cbd826a7e413ffMike Lockwood } 7864553b08d7555a103fdbe8623a9cbd826a7e413ffMike Lockwood 7874553b08d7555a103fdbe8623a9cbd826a7e413ffMike Lockwood memset(&out, 0, sizeof(out)); 7884553b08d7555a103fdbe8623a9cbd826a7e413ffMike Lockwood out.st.blocks = stat.f_blocks; 7894553b08d7555a103fdbe8623a9cbd826a7e413ffMike Lockwood out.st.bfree = stat.f_bfree; 7904553b08d7555a103fdbe8623a9cbd826a7e413ffMike Lockwood out.st.bavail = stat.f_bavail; 7914553b08d7555a103fdbe8623a9cbd826a7e413ffMike Lockwood out.st.files = stat.f_files; 7924553b08d7555a103fdbe8623a9cbd826a7e413ffMike Lockwood out.st.ffree = stat.f_ffree; 7934553b08d7555a103fdbe8623a9cbd826a7e413ffMike Lockwood out.st.bsize = stat.f_bsize; 7944553b08d7555a103fdbe8623a9cbd826a7e413ffMike Lockwood out.st.namelen = stat.f_namelen; 7954553b08d7555a103fdbe8623a9cbd826a7e413ffMike Lockwood out.st.frsize = stat.f_frsize; 7964553b08d7555a103fdbe8623a9cbd826a7e413ffMike Lockwood fuse_reply(fuse, hdr->unique, &out, sizeof(out)); 7974553b08d7555a103fdbe8623a9cbd826a7e413ffMike Lockwood return; 7984553b08d7555a103fdbe8623a9cbd826a7e413ffMike Lockwood } 79903ee9479a4ed67689b9bbccda20c60800a38b178Brian Swetland case FUSE_RELEASE: { /* release_in -> */ 80003ee9479a4ed67689b9bbccda20c60800a38b178Brian Swetland struct fuse_release_in *req = data; 80103ee9479a4ed67689b9bbccda20c60800a38b178Brian Swetland struct handle *h = id_to_ptr(req->fh); 80203ee9479a4ed67689b9bbccda20c60800a38b178Brian Swetland TRACE("RELEASE %p(%d)\n", h, h->fd); 80303ee9479a4ed67689b9bbccda20c60800a38b178Brian Swetland close(h->fd); 80403ee9479a4ed67689b9bbccda20c60800a38b178Brian Swetland free(h); 80503ee9479a4ed67689b9bbccda20c60800a38b178Brian Swetland fuse_status(fuse, hdr->unique, 0); 80603ee9479a4ed67689b9bbccda20c60800a38b178Brian Swetland return; 80703ee9479a4ed67689b9bbccda20c60800a38b178Brian Swetland } 80803ee9479a4ed67689b9bbccda20c60800a38b178Brian Swetland// case FUSE_FSYNC: 80903ee9479a4ed67689b9bbccda20c60800a38b178Brian Swetland// case FUSE_SETXATTR: 81003ee9479a4ed67689b9bbccda20c60800a38b178Brian Swetland// case FUSE_GETXATTR: 81103ee9479a4ed67689b9bbccda20c60800a38b178Brian Swetland// case FUSE_LISTXATTR: 81203ee9479a4ed67689b9bbccda20c60800a38b178Brian Swetland// case FUSE_REMOVEXATTR: 81303ee9479a4ed67689b9bbccda20c60800a38b178Brian Swetland case FUSE_FLUSH: 81403ee9479a4ed67689b9bbccda20c60800a38b178Brian Swetland fuse_status(fuse, hdr->unique, 0); 81503ee9479a4ed67689b9bbccda20c60800a38b178Brian Swetland return; 81603ee9479a4ed67689b9bbccda20c60800a38b178Brian Swetland case FUSE_OPENDIR: { /* open_in -> open_out */ 81703ee9479a4ed67689b9bbccda20c60800a38b178Brian Swetland struct fuse_open_in *req = data; 81803ee9479a4ed67689b9bbccda20c60800a38b178Brian Swetland struct fuse_open_out out; 81903ee9479a4ed67689b9bbccda20c60800a38b178Brian Swetland char *path, buffer[PATH_BUFFER_SIZE]; 82003ee9479a4ed67689b9bbccda20c60800a38b178Brian Swetland struct dirhandle *h; 82103ee9479a4ed67689b9bbccda20c60800a38b178Brian Swetland 82203ee9479a4ed67689b9bbccda20c60800a38b178Brian Swetland h = malloc(sizeof(*h)); 82303ee9479a4ed67689b9bbccda20c60800a38b178Brian Swetland if (!h) { 82403ee9479a4ed67689b9bbccda20c60800a38b178Brian Swetland fuse_status(fuse, hdr->unique, -ENOMEM); 82503ee9479a4ed67689b9bbccda20c60800a38b178Brian Swetland return; 82603ee9479a4ed67689b9bbccda20c60800a38b178Brian Swetland } 82703ee9479a4ed67689b9bbccda20c60800a38b178Brian Swetland 82803ee9479a4ed67689b9bbccda20c60800a38b178Brian Swetland path = node_get_path(node, buffer, 0); 82903ee9479a4ed67689b9bbccda20c60800a38b178Brian Swetland TRACE("OPENDIR %llx '%s'\n", hdr->nodeid, path); 83003ee9479a4ed67689b9bbccda20c60800a38b178Brian Swetland h->d = opendir(path); 83103ee9479a4ed67689b9bbccda20c60800a38b178Brian Swetland if (h->d == 0) { 83203ee9479a4ed67689b9bbccda20c60800a38b178Brian Swetland ERROR("ERROR\n"); 83303ee9479a4ed67689b9bbccda20c60800a38b178Brian Swetland fuse_status(fuse, hdr->unique, -errno); 83403ee9479a4ed67689b9bbccda20c60800a38b178Brian Swetland free(h); 83503ee9479a4ed67689b9bbccda20c60800a38b178Brian Swetland return; 83603ee9479a4ed67689b9bbccda20c60800a38b178Brian Swetland } 83703ee9479a4ed67689b9bbccda20c60800a38b178Brian Swetland out.fh = ptr_to_id(h); 83803ee9479a4ed67689b9bbccda20c60800a38b178Brian Swetland fuse_reply(fuse, hdr->unique, &out, sizeof(out)); 83903ee9479a4ed67689b9bbccda20c60800a38b178Brian Swetland return; 84003ee9479a4ed67689b9bbccda20c60800a38b178Brian Swetland } 84103ee9479a4ed67689b9bbccda20c60800a38b178Brian Swetland case FUSE_READDIR: { 84203ee9479a4ed67689b9bbccda20c60800a38b178Brian Swetland struct fuse_read_in *req = data; 84303ee9479a4ed67689b9bbccda20c60800a38b178Brian Swetland char buffer[8192]; 84403ee9479a4ed67689b9bbccda20c60800a38b178Brian Swetland struct fuse_dirent *fde = (struct fuse_dirent*) buffer; 84503ee9479a4ed67689b9bbccda20c60800a38b178Brian Swetland struct dirent *de; 84603ee9479a4ed67689b9bbccda20c60800a38b178Brian Swetland struct dirhandle *h = id_to_ptr(req->fh); 84703ee9479a4ed67689b9bbccda20c60800a38b178Brian Swetland TRACE("READDIR %p\n", h); 84803ee9479a4ed67689b9bbccda20c60800a38b178Brian Swetland de = readdir(h->d); 84903ee9479a4ed67689b9bbccda20c60800a38b178Brian Swetland if (!de) { 85003ee9479a4ed67689b9bbccda20c60800a38b178Brian Swetland fuse_status(fuse, hdr->unique, 0); 85103ee9479a4ed67689b9bbccda20c60800a38b178Brian Swetland return; 85203ee9479a4ed67689b9bbccda20c60800a38b178Brian Swetland } 85303ee9479a4ed67689b9bbccda20c60800a38b178Brian Swetland fde->ino = FUSE_UNKNOWN_INO; 85403ee9479a4ed67689b9bbccda20c60800a38b178Brian Swetland fde->off = 0; 85503ee9479a4ed67689b9bbccda20c60800a38b178Brian Swetland fde->type = de->d_type; 85603ee9479a4ed67689b9bbccda20c60800a38b178Brian Swetland fde->namelen = strlen(de->d_name); 85703ee9479a4ed67689b9bbccda20c60800a38b178Brian Swetland memcpy(fde->name, de->d_name, fde->namelen + 1); 85803ee9479a4ed67689b9bbccda20c60800a38b178Brian Swetland fuse_reply(fuse, hdr->unique, fde, 85903ee9479a4ed67689b9bbccda20c60800a38b178Brian Swetland FUSE_DIRENT_ALIGN(sizeof(struct fuse_dirent) + fde->namelen)); 86003ee9479a4ed67689b9bbccda20c60800a38b178Brian Swetland return; 86103ee9479a4ed67689b9bbccda20c60800a38b178Brian Swetland } 86203ee9479a4ed67689b9bbccda20c60800a38b178Brian Swetland case FUSE_RELEASEDIR: { /* release_in -> */ 86303ee9479a4ed67689b9bbccda20c60800a38b178Brian Swetland struct fuse_release_in *req = data; 86403ee9479a4ed67689b9bbccda20c60800a38b178Brian Swetland struct dirhandle *h = id_to_ptr(req->fh); 86503ee9479a4ed67689b9bbccda20c60800a38b178Brian Swetland TRACE("RELEASEDIR %p\n",h); 86603ee9479a4ed67689b9bbccda20c60800a38b178Brian Swetland closedir(h->d); 86703ee9479a4ed67689b9bbccda20c60800a38b178Brian Swetland free(h); 86803ee9479a4ed67689b9bbccda20c60800a38b178Brian Swetland fuse_status(fuse, hdr->unique, 0); 86903ee9479a4ed67689b9bbccda20c60800a38b178Brian Swetland return; 87003ee9479a4ed67689b9bbccda20c60800a38b178Brian Swetland } 87103ee9479a4ed67689b9bbccda20c60800a38b178Brian Swetland// case FUSE_FSYNCDIR: 87203ee9479a4ed67689b9bbccda20c60800a38b178Brian Swetland case FUSE_INIT: { /* init_in -> init_out */ 87303ee9479a4ed67689b9bbccda20c60800a38b178Brian Swetland struct fuse_init_in *req = data; 87403ee9479a4ed67689b9bbccda20c60800a38b178Brian Swetland struct fuse_init_out out; 87503ee9479a4ed67689b9bbccda20c60800a38b178Brian Swetland 87603ee9479a4ed67689b9bbccda20c60800a38b178Brian Swetland TRACE("INIT ver=%d.%d maxread=%d flags=%x\n", 87703ee9479a4ed67689b9bbccda20c60800a38b178Brian Swetland req->major, req->minor, req->max_readahead, req->flags); 87803ee9479a4ed67689b9bbccda20c60800a38b178Brian Swetland 87903ee9479a4ed67689b9bbccda20c60800a38b178Brian Swetland out.major = FUSE_KERNEL_VERSION; 88003ee9479a4ed67689b9bbccda20c60800a38b178Brian Swetland out.minor = FUSE_KERNEL_MINOR_VERSION; 88103ee9479a4ed67689b9bbccda20c60800a38b178Brian Swetland out.max_readahead = req->max_readahead; 882fc1a13bfdd9f7acd36bd4ae8f87cd57aa298f5acMike Lockwood out.flags = FUSE_ATOMIC_O_TRUNC; 88303ee9479a4ed67689b9bbccda20c60800a38b178Brian Swetland out.max_background = 32; 88403ee9479a4ed67689b9bbccda20c60800a38b178Brian Swetland out.congestion_threshold = 32; 88503ee9479a4ed67689b9bbccda20c60800a38b178Brian Swetland out.max_write = 256 * 1024; 88603ee9479a4ed67689b9bbccda20c60800a38b178Brian Swetland 88703ee9479a4ed67689b9bbccda20c60800a38b178Brian Swetland fuse_reply(fuse, hdr->unique, &out, sizeof(out)); 88803ee9479a4ed67689b9bbccda20c60800a38b178Brian Swetland return; 88903ee9479a4ed67689b9bbccda20c60800a38b178Brian Swetland } 89003ee9479a4ed67689b9bbccda20c60800a38b178Brian Swetland default: { 89103ee9479a4ed67689b9bbccda20c60800a38b178Brian Swetland struct fuse_out_header h; 89203ee9479a4ed67689b9bbccda20c60800a38b178Brian Swetland ERROR("NOTIMPL op=%d uniq=%llx nid=%llx\n", 89303ee9479a4ed67689b9bbccda20c60800a38b178Brian Swetland hdr->opcode, hdr->unique, hdr->nodeid); 89403ee9479a4ed67689b9bbccda20c60800a38b178Brian Swetland 89503ee9479a4ed67689b9bbccda20c60800a38b178Brian Swetland oops: 89603ee9479a4ed67689b9bbccda20c60800a38b178Brian Swetland h.len = sizeof(h); 89703ee9479a4ed67689b9bbccda20c60800a38b178Brian Swetland h.error = -ENOSYS; 89803ee9479a4ed67689b9bbccda20c60800a38b178Brian Swetland h.unique = hdr->unique; 89903ee9479a4ed67689b9bbccda20c60800a38b178Brian Swetland write(fuse->fd, &h, sizeof(h)); 90003ee9479a4ed67689b9bbccda20c60800a38b178Brian Swetland break; 90103ee9479a4ed67689b9bbccda20c60800a38b178Brian Swetland } 90203ee9479a4ed67689b9bbccda20c60800a38b178Brian Swetland } 90303ee9479a4ed67689b9bbccda20c60800a38b178Brian Swetland} 90403ee9479a4ed67689b9bbccda20c60800a38b178Brian Swetland 90503ee9479a4ed67689b9bbccda20c60800a38b178Brian Swetlandvoid handle_fuse_requests(struct fuse *fuse) 90603ee9479a4ed67689b9bbccda20c60800a38b178Brian Swetland{ 90703ee9479a4ed67689b9bbccda20c60800a38b178Brian Swetland unsigned char req[256 * 1024 + 128]; 90803ee9479a4ed67689b9bbccda20c60800a38b178Brian Swetland int len; 90903ee9479a4ed67689b9bbccda20c60800a38b178Brian Swetland 91003ee9479a4ed67689b9bbccda20c60800a38b178Brian Swetland for (;;) { 91103ee9479a4ed67689b9bbccda20c60800a38b178Brian Swetland len = read(fuse->fd, req, 8192); 91203ee9479a4ed67689b9bbccda20c60800a38b178Brian Swetland if (len < 0) { 91303ee9479a4ed67689b9bbccda20c60800a38b178Brian Swetland if (errno == EINTR) 91403ee9479a4ed67689b9bbccda20c60800a38b178Brian Swetland continue; 91503ee9479a4ed67689b9bbccda20c60800a38b178Brian Swetland ERROR("handle_fuse_requests: errno=%d\n", errno); 91603ee9479a4ed67689b9bbccda20c60800a38b178Brian Swetland return; 91703ee9479a4ed67689b9bbccda20c60800a38b178Brian Swetland } 91803ee9479a4ed67689b9bbccda20c60800a38b178Brian Swetland handle_fuse_request(fuse, (void*) req, (void*) (req + sizeof(struct fuse_in_header)), len); 91903ee9479a4ed67689b9bbccda20c60800a38b178Brian Swetland } 92003ee9479a4ed67689b9bbccda20c60800a38b178Brian Swetland} 92103ee9479a4ed67689b9bbccda20c60800a38b178Brian Swetland 9224f35e623a2359789406772009078d1a6ca7af6b3Mike Lockwoodstatic int usage() 9234f35e623a2359789406772009078d1a6ca7af6b3Mike Lockwood{ 9241bedb73f9fc239b69d958cbabc50c7ba382bacbcMike Lockwood ERROR("usage: sdcard [-l -f] <path> <uid> <gid>\n\n\t-l force file names to lower case when creating new files\n\t-f fix up file system before starting (repairs bad file name case and group ownership)\n"); 9254f35e623a2359789406772009078d1a6ca7af6b3Mike Lockwood return -1; 9264f35e623a2359789406772009078d1a6ca7af6b3Mike Lockwood} 9274f35e623a2359789406772009078d1a6ca7af6b3Mike Lockwood 92803ee9479a4ed67689b9bbccda20c60800a38b178Brian Swetlandint main(int argc, char **argv) 92903ee9479a4ed67689b9bbccda20c60800a38b178Brian Swetland{ 93003ee9479a4ed67689b9bbccda20c60800a38b178Brian Swetland struct fuse fuse; 93103ee9479a4ed67689b9bbccda20c60800a38b178Brian Swetland char opts[256]; 93203ee9479a4ed67689b9bbccda20c60800a38b178Brian Swetland int fd; 93303ee9479a4ed67689b9bbccda20c60800a38b178Brian Swetland int res; 9344f35e623a2359789406772009078d1a6ca7af6b3Mike Lockwood const char *path = NULL; 9354f35e623a2359789406772009078d1a6ca7af6b3Mike Lockwood int i; 9364f35e623a2359789406772009078d1a6ca7af6b3Mike Lockwood 9374f35e623a2359789406772009078d1a6ca7af6b3Mike Lockwood for (i = 1; i < argc; i++) { 9384f35e623a2359789406772009078d1a6ca7af6b3Mike Lockwood char* arg = argv[i]; 939575a2bbee30d70a1940077a5b699aaf93cb4e2cdMike Lockwood if (!path) 940575a2bbee30d70a1940077a5b699aaf93cb4e2cdMike Lockwood path = arg; 941575a2bbee30d70a1940077a5b699aaf93cb4e2cdMike Lockwood else if (uid == -1) 942575a2bbee30d70a1940077a5b699aaf93cb4e2cdMike Lockwood uid = strtoul(arg, 0, 10); 943575a2bbee30d70a1940077a5b699aaf93cb4e2cdMike Lockwood else if (gid == -1) 944575a2bbee30d70a1940077a5b699aaf93cb4e2cdMike Lockwood gid = strtoul(arg, 0, 10); 945575a2bbee30d70a1940077a5b699aaf93cb4e2cdMike Lockwood else { 946575a2bbee30d70a1940077a5b699aaf93cb4e2cdMike Lockwood ERROR("too many arguments\n"); 947575a2bbee30d70a1940077a5b699aaf93cb4e2cdMike Lockwood return usage(); 9484f35e623a2359789406772009078d1a6ca7af6b3Mike Lockwood } 94903ee9479a4ed67689b9bbccda20c60800a38b178Brian Swetland } 95003ee9479a4ed67689b9bbccda20c60800a38b178Brian Swetland 9514f35e623a2359789406772009078d1a6ca7af6b3Mike Lockwood if (!path) { 9524f35e623a2359789406772009078d1a6ca7af6b3Mike Lockwood ERROR("no path specified\n"); 9534f35e623a2359789406772009078d1a6ca7af6b3Mike Lockwood return usage(); 9544f35e623a2359789406772009078d1a6ca7af6b3Mike Lockwood } 9554f35e623a2359789406772009078d1a6ca7af6b3Mike Lockwood if (uid <= 0 || gid <= 0) { 95603ee9479a4ed67689b9bbccda20c60800a38b178Brian Swetland ERROR("uid and gid must be nonzero\n"); 9574f35e623a2359789406772009078d1a6ca7af6b3Mike Lockwood return usage(); 95803ee9479a4ed67689b9bbccda20c60800a38b178Brian Swetland } 95903ee9479a4ed67689b9bbccda20c60800a38b178Brian Swetland 96003ee9479a4ed67689b9bbccda20c60800a38b178Brian Swetland /* cleanup from previous instance, if necessary */ 9614553b08d7555a103fdbe8623a9cbd826a7e413ffMike Lockwood umount2(MOUNT_POINT, 2); 96203ee9479a4ed67689b9bbccda20c60800a38b178Brian Swetland 96303ee9479a4ed67689b9bbccda20c60800a38b178Brian Swetland fd = open("/dev/fuse", O_RDWR); 96403ee9479a4ed67689b9bbccda20c60800a38b178Brian Swetland if (fd < 0){ 96503ee9479a4ed67689b9bbccda20c60800a38b178Brian Swetland ERROR("cannot open fuse device (%d)\n", errno); 96603ee9479a4ed67689b9bbccda20c60800a38b178Brian Swetland return -1; 96703ee9479a4ed67689b9bbccda20c60800a38b178Brian Swetland } 96803ee9479a4ed67689b9bbccda20c60800a38b178Brian Swetland 96903ee9479a4ed67689b9bbccda20c60800a38b178Brian Swetland sprintf(opts, "fd=%i,rootmode=40000,default_permissions,allow_other," 97003ee9479a4ed67689b9bbccda20c60800a38b178Brian Swetland "user_id=%d,group_id=%d", fd, uid, gid); 97103ee9479a4ed67689b9bbccda20c60800a38b178Brian Swetland 9724553b08d7555a103fdbe8623a9cbd826a7e413ffMike Lockwood res = mount("/dev/fuse", MOUNT_POINT, "fuse", MS_NOSUID | MS_NODEV, opts); 97303ee9479a4ed67689b9bbccda20c60800a38b178Brian Swetland if (res < 0) { 97403ee9479a4ed67689b9bbccda20c60800a38b178Brian Swetland ERROR("cannot mount fuse filesystem (%d)\n", errno); 97503ee9479a4ed67689b9bbccda20c60800a38b178Brian Swetland return -1; 97603ee9479a4ed67689b9bbccda20c60800a38b178Brian Swetland } 97703ee9479a4ed67689b9bbccda20c60800a38b178Brian Swetland 97803ee9479a4ed67689b9bbccda20c60800a38b178Brian Swetland if (setgid(gid) < 0) { 97903ee9479a4ed67689b9bbccda20c60800a38b178Brian Swetland ERROR("cannot setgid!\n"); 98003ee9479a4ed67689b9bbccda20c60800a38b178Brian Swetland return -1; 98103ee9479a4ed67689b9bbccda20c60800a38b178Brian Swetland } 98203ee9479a4ed67689b9bbccda20c60800a38b178Brian Swetland if (setuid(uid) < 0) { 98303ee9479a4ed67689b9bbccda20c60800a38b178Brian Swetland ERROR("cannot setuid!\n"); 98403ee9479a4ed67689b9bbccda20c60800a38b178Brian Swetland return -1; 98503ee9479a4ed67689b9bbccda20c60800a38b178Brian Swetland } 98603ee9479a4ed67689b9bbccda20c60800a38b178Brian Swetland 98703ee9479a4ed67689b9bbccda20c60800a38b178Brian Swetland fuse_init(&fuse, fd, path); 98803ee9479a4ed67689b9bbccda20c60800a38b178Brian Swetland 98903ee9479a4ed67689b9bbccda20c60800a38b178Brian Swetland umask(0); 99003ee9479a4ed67689b9bbccda20c60800a38b178Brian Swetland handle_fuse_requests(&fuse); 99103ee9479a4ed67689b9bbccda20c60800a38b178Brian Swetland 99203ee9479a4ed67689b9bbccda20c60800a38b178Brian Swetland return 0; 99303ee9479a4ed67689b9bbccda20c60800a38b178Brian Swetland} 994