Miklos Szeredi | 85c74fc | 2001-10-28 19:44:14 +0000 | [diff] [blame] | 1 | /* |
| 2 | FUSE: Filesystem in Userspace |
| 3 | Copyright (C) 2001 Miklos Szeredi (mszeredi@inf.bme.hu) |
| 4 | |
Miklos Szeredi | 8b39a9f | 2002-10-25 12:41:16 +0000 | [diff] [blame] | 5 | This program can be distributed under the terms of the GNU LGPL. |
| 6 | See the file COPYING.LIB |
Miklos Szeredi | 85c74fc | 2001-10-28 19:44:14 +0000 | [diff] [blame] | 7 | */ |
| 8 | |
| 9 | #include "fuse_i.h" |
| 10 | #include <linux/fuse.h> |
| 11 | |
| 12 | #include <string.h> |
Miklos Szeredi | 97c61e9 | 2001-11-07 12:09:43 +0000 | [diff] [blame] | 13 | #include <stdlib.h> |
Miklos Szeredi | 85c74fc | 2001-10-28 19:44:14 +0000 | [diff] [blame] | 14 | #include <unistd.h> |
Miklos Szeredi | 97c61e9 | 2001-11-07 12:09:43 +0000 | [diff] [blame] | 15 | #include <limits.h> |
Miklos Szeredi | 85c74fc | 2001-10-28 19:44:14 +0000 | [diff] [blame] | 16 | #include <errno.h> |
Miklos Szeredi | 019b4e9 | 2001-12-26 18:08:09 +0000 | [diff] [blame] | 17 | #include <sys/param.h> |
Miklos Szeredi | 85c74fc | 2001-10-28 19:44:14 +0000 | [diff] [blame] | 18 | |
Miklos Szeredi | 97c61e9 | 2001-11-07 12:09:43 +0000 | [diff] [blame] | 19 | #define FUSE_MAX_PATH 4096 |
Miklos Szeredi | 6bf8b68 | 2002-10-28 08:49:39 +0000 | [diff] [blame] | 20 | #define PARAM(inarg) (((char *)(inarg)) + sizeof(*inarg)) |
Miklos Szeredi | 85c74fc | 2001-10-28 19:44:14 +0000 | [diff] [blame] | 21 | |
Miklos Szeredi | 254d5ed | 2004-03-02 11:11:24 +0000 | [diff] [blame^] | 22 | #define ENTRY_REVALIDATE_TIME 1 /* sec */ |
| 23 | #define ATTR_REVALIDATE_TIME 1 /* sec */ |
| 24 | |
Miklos Szeredi | c8ba237 | 2002-12-10 12:26:00 +0000 | [diff] [blame] | 25 | static const char *opname(enum fuse_opcode opcode) |
| 26 | { |
| 27 | switch(opcode) { |
| 28 | case FUSE_LOOKUP: return "LOOKUP"; |
| 29 | case FUSE_FORGET: return "FORGET"; |
| 30 | case FUSE_GETATTR: return "GETATTR"; |
| 31 | case FUSE_SETATTR: return "SETATTR"; |
| 32 | case FUSE_READLINK: return "READLINK"; |
| 33 | case FUSE_SYMLINK: return "SYMLINK"; |
| 34 | case FUSE_GETDIR: return "GETDIR"; |
| 35 | case FUSE_MKNOD: return "MKNOD"; |
| 36 | case FUSE_MKDIR: return "MKDIR"; |
| 37 | case FUSE_UNLINK: return "UNLINK"; |
| 38 | case FUSE_RMDIR: return "RMDIR"; |
| 39 | case FUSE_RENAME: return "RENAME"; |
| 40 | case FUSE_LINK: return "LINK"; |
| 41 | case FUSE_OPEN: return "OPEN"; |
| 42 | case FUSE_READ: return "READ"; |
| 43 | case FUSE_WRITE: return "WRITE"; |
| 44 | case FUSE_STATFS: return "STATFS"; |
| 45 | case FUSE_RELEASE: return "RELEASE"; |
Miklos Szeredi | 5e43f2c | 2003-12-12 14:06:41 +0000 | [diff] [blame] | 46 | case FUSE_FSYNC: return "FSYNC"; |
Miklos Szeredi | c8ba237 | 2002-12-10 12:26:00 +0000 | [diff] [blame] | 47 | default: return "???"; |
| 48 | } |
| 49 | } |
| 50 | |
Miklos Szeredi | 99ddf0e | 2001-11-25 17:19:59 +0000 | [diff] [blame] | 51 | static inline void inc_avail(struct fuse *f) |
| 52 | { |
| 53 | pthread_mutex_lock(&f->lock); |
| 54 | f->numavail ++; |
| 55 | pthread_mutex_unlock(&f->lock); |
| 56 | } |
| 57 | |
| 58 | static inline void dec_avail(struct fuse *f) |
| 59 | { |
| 60 | pthread_mutex_lock(&f->lock); |
| 61 | f->numavail --; |
| 62 | pthread_mutex_unlock(&f->lock); |
| 63 | } |
| 64 | |
Miklos Szeredi | 97c61e9 | 2001-11-07 12:09:43 +0000 | [diff] [blame] | 65 | static struct node *__get_node(struct fuse *f, fino_t ino) |
Miklos Szeredi | a181e61 | 2001-11-06 12:03:23 +0000 | [diff] [blame] | 66 | { |
Miklos Szeredi | 97c61e9 | 2001-11-07 12:09:43 +0000 | [diff] [blame] | 67 | size_t hash = ino % f->ino_table_size; |
| 68 | struct node *node; |
| 69 | |
| 70 | for(node = f->ino_table[hash]; node != NULL; node = node->ino_next) |
| 71 | if(node->ino == ino) |
| 72 | return node; |
| 73 | |
| 74 | return NULL; |
Miklos Szeredi | a181e61 | 2001-11-06 12:03:23 +0000 | [diff] [blame] | 75 | } |
| 76 | |
Miklos Szeredi | 97c61e9 | 2001-11-07 12:09:43 +0000 | [diff] [blame] | 77 | static struct node *get_node(struct fuse *f, fino_t ino) |
Miklos Szeredi | a181e61 | 2001-11-06 12:03:23 +0000 | [diff] [blame] | 78 | { |
Miklos Szeredi | 97c61e9 | 2001-11-07 12:09:43 +0000 | [diff] [blame] | 79 | struct node *node = __get_node(f, ino); |
| 80 | if(node != NULL) |
| 81 | return node; |
| 82 | |
| 83 | fprintf(stderr, "fuse internal error: inode %lu not found\n", ino); |
| 84 | abort(); |
Miklos Szeredi | a181e61 | 2001-11-06 12:03:23 +0000 | [diff] [blame] | 85 | } |
| 86 | |
Miklos Szeredi | 76f6578 | 2004-02-19 16:55:40 +0000 | [diff] [blame] | 87 | static void hash_ino(struct fuse *f, struct node *node) |
Miklos Szeredi | 85c74fc | 2001-10-28 19:44:14 +0000 | [diff] [blame] | 88 | { |
Miklos Szeredi | 76f6578 | 2004-02-19 16:55:40 +0000 | [diff] [blame] | 89 | size_t hash = node->ino % f->ino_table_size; |
Miklos Szeredi | 97c61e9 | 2001-11-07 12:09:43 +0000 | [diff] [blame] | 90 | node->ino_next = f->ino_table[hash]; |
| 91 | f->ino_table[hash] = node; |
Miklos Szeredi | 85c74fc | 2001-10-28 19:44:14 +0000 | [diff] [blame] | 92 | } |
| 93 | |
Miklos Szeredi | 97c61e9 | 2001-11-07 12:09:43 +0000 | [diff] [blame] | 94 | static void unhash_ino(struct fuse *f, struct node *node) |
Miklos Szeredi | 85c74fc | 2001-10-28 19:44:14 +0000 | [diff] [blame] | 95 | { |
Miklos Szeredi | 97c61e9 | 2001-11-07 12:09:43 +0000 | [diff] [blame] | 96 | size_t hash = node->ino % f->ino_table_size; |
| 97 | struct node **nodep = &f->ino_table[hash]; |
| 98 | |
| 99 | for(; *nodep != NULL; nodep = &(*nodep)->ino_next) |
| 100 | if(*nodep == node) { |
| 101 | *nodep = node->ino_next; |
| 102 | return; |
| 103 | } |
Miklos Szeredi | 85c74fc | 2001-10-28 19:44:14 +0000 | [diff] [blame] | 104 | } |
| 105 | |
Miklos Szeredi | 97c61e9 | 2001-11-07 12:09:43 +0000 | [diff] [blame] | 106 | static fino_t next_ino(struct fuse *f) |
| 107 | { |
Miklos Szeredi | 76f6578 | 2004-02-19 16:55:40 +0000 | [diff] [blame] | 108 | do { |
| 109 | f->ctr++; |
| 110 | if(!f->ctr) |
| 111 | f->generation ++; |
| 112 | } while(f->ctr == 0 || __get_node(f, f->ctr) != NULL); |
Miklos Szeredi | 97c61e9 | 2001-11-07 12:09:43 +0000 | [diff] [blame] | 113 | return f->ctr; |
| 114 | } |
| 115 | |
| 116 | static void free_node(struct node *node) |
| 117 | { |
| 118 | free(node->name); |
| 119 | free(node); |
| 120 | } |
| 121 | |
| 122 | static unsigned int name_hash(struct fuse *f, fino_t parent, const char *name) |
| 123 | { |
| 124 | unsigned int hash = *name; |
| 125 | |
| 126 | if(hash) |
| 127 | for(name += 1; *name != '\0'; name++) |
| 128 | hash = (hash << 5) - hash + *name; |
| 129 | |
| 130 | return (hash + parent) % f->name_table_size; |
Miklos Szeredi | 85c74fc | 2001-10-28 19:44:14 +0000 | [diff] [blame] | 131 | } |
| 132 | |
Miklos Szeredi | 19dff1b | 2001-10-30 15:06:52 +0000 | [diff] [blame] | 133 | static struct node *lookup_node(struct fuse *f, fino_t parent, |
| 134 | const char *name) |
| 135 | { |
Miklos Szeredi | 97c61e9 | 2001-11-07 12:09:43 +0000 | [diff] [blame] | 136 | size_t hash = name_hash(f, parent, name); |
| 137 | struct node *node; |
Miklos Szeredi | 19dff1b | 2001-10-30 15:06:52 +0000 | [diff] [blame] | 138 | |
Miklos Szeredi | 97c61e9 | 2001-11-07 12:09:43 +0000 | [diff] [blame] | 139 | for(node = f->name_table[hash]; node != NULL; node = node->name_next) |
| 140 | if(node->parent == parent && strcmp(node->name, name) == 0) |
| 141 | return node; |
Miklos Szeredi | 19dff1b | 2001-10-30 15:06:52 +0000 | [diff] [blame] | 142 | |
Miklos Szeredi | 97c61e9 | 2001-11-07 12:09:43 +0000 | [diff] [blame] | 143 | return NULL; |
Miklos Szeredi | 19dff1b | 2001-10-30 15:06:52 +0000 | [diff] [blame] | 144 | } |
| 145 | |
Miklos Szeredi | 97c61e9 | 2001-11-07 12:09:43 +0000 | [diff] [blame] | 146 | static void hash_name(struct fuse *f, struct node *node, fino_t parent, |
Miklos Szeredi | a181e61 | 2001-11-06 12:03:23 +0000 | [diff] [blame] | 147 | const char *name) |
Miklos Szeredi | 5e18348 | 2001-10-31 14:52:35 +0000 | [diff] [blame] | 148 | { |
Miklos Szeredi | 97c61e9 | 2001-11-07 12:09:43 +0000 | [diff] [blame] | 149 | size_t hash = name_hash(f, parent, name); |
Miklos Szeredi | a181e61 | 2001-11-06 12:03:23 +0000 | [diff] [blame] | 150 | node->parent = parent; |
Miklos Szeredi | 97c61e9 | 2001-11-07 12:09:43 +0000 | [diff] [blame] | 151 | node->name = strdup(name); |
| 152 | node->name_next = f->name_table[hash]; |
| 153 | f->name_table[hash] = node; |
Miklos Szeredi | 5e18348 | 2001-10-31 14:52:35 +0000 | [diff] [blame] | 154 | } |
| 155 | |
Miklos Szeredi | 97c61e9 | 2001-11-07 12:09:43 +0000 | [diff] [blame] | 156 | static void unhash_name(struct fuse *f, struct node *node) |
Miklos Szeredi | a181e61 | 2001-11-06 12:03:23 +0000 | [diff] [blame] | 157 | { |
| 158 | if(node->name != NULL) { |
Miklos Szeredi | 97c61e9 | 2001-11-07 12:09:43 +0000 | [diff] [blame] | 159 | size_t hash = name_hash(f, node->parent, node->name); |
| 160 | struct node **nodep = &f->name_table[hash]; |
| 161 | |
| 162 | for(; *nodep != NULL; nodep = &(*nodep)->name_next) |
| 163 | if(*nodep == node) { |
| 164 | *nodep = node->name_next; |
| 165 | node->name_next = NULL; |
| 166 | free(node->name); |
| 167 | node->name = NULL; |
| 168 | node->parent = 0; |
| 169 | return; |
| 170 | } |
| 171 | fprintf(stderr, "fuse internal error: unable to unhash node: %lu\n", |
| 172 | node->ino); |
| 173 | abort(); |
Miklos Szeredi | a181e61 | 2001-11-06 12:03:23 +0000 | [diff] [blame] | 174 | } |
| 175 | } |
| 176 | |
Miklos Szeredi | 76f6578 | 2004-02-19 16:55:40 +0000 | [diff] [blame] | 177 | static struct node *find_node(struct fuse *f, fino_t parent, char *name, |
| 178 | struct fuse_attr *attr, int version) |
Miklos Szeredi | 5e18348 | 2001-10-31 14:52:35 +0000 | [diff] [blame] | 179 | { |
| 180 | struct node *node; |
Miklos Szeredi | a181e61 | 2001-11-06 12:03:23 +0000 | [diff] [blame] | 181 | int mode = attr->mode & S_IFMT; |
| 182 | int rdev = 0; |
| 183 | |
| 184 | if(S_ISCHR(mode) || S_ISBLK(mode)) |
| 185 | rdev = attr->rdev; |
Miklos Szeredi | 5e18348 | 2001-10-31 14:52:35 +0000 | [diff] [blame] | 186 | |
Miklos Szeredi | a181e61 | 2001-11-06 12:03:23 +0000 | [diff] [blame] | 187 | pthread_mutex_lock(&f->lock); |
Miklos Szeredi | 5e18348 | 2001-10-31 14:52:35 +0000 | [diff] [blame] | 188 | node = lookup_node(f, parent, name); |
| 189 | if(node != NULL) { |
Miklos Szeredi | a181e61 | 2001-11-06 12:03:23 +0000 | [diff] [blame] | 190 | if(node->mode == mode && node->rdev == rdev) |
| 191 | goto out; |
| 192 | |
Miklos Szeredi | 97c61e9 | 2001-11-07 12:09:43 +0000 | [diff] [blame] | 193 | unhash_name(f, node); |
Miklos Szeredi | 5e18348 | 2001-10-31 14:52:35 +0000 | [diff] [blame] | 194 | } |
| 195 | |
Miklos Szeredi | 97c61e9 | 2001-11-07 12:09:43 +0000 | [diff] [blame] | 196 | node = (struct node *) calloc(1, sizeof(struct node)); |
Miklos Szeredi | a181e61 | 2001-11-06 12:03:23 +0000 | [diff] [blame] | 197 | node->mode = mode; |
Miklos Szeredi | 97c61e9 | 2001-11-07 12:09:43 +0000 | [diff] [blame] | 198 | node->rdev = rdev; |
Miklos Szeredi | 76f6578 | 2004-02-19 16:55:40 +0000 | [diff] [blame] | 199 | node->ino = next_ino(f); |
| 200 | node->generation = f->generation; |
| 201 | hash_ino(f, node); |
Miklos Szeredi | 97c61e9 | 2001-11-07 12:09:43 +0000 | [diff] [blame] | 202 | hash_name(f, node, parent, name); |
Miklos Szeredi | a181e61 | 2001-11-06 12:03:23 +0000 | [diff] [blame] | 203 | |
| 204 | out: |
| 205 | node->version = version; |
| 206 | pthread_mutex_unlock(&f->lock); |
Miklos Szeredi | 76f6578 | 2004-02-19 16:55:40 +0000 | [diff] [blame] | 207 | return node; |
Miklos Szeredi | 5e18348 | 2001-10-31 14:52:35 +0000 | [diff] [blame] | 208 | } |
| 209 | |
Miklos Szeredi | 97c61e9 | 2001-11-07 12:09:43 +0000 | [diff] [blame] | 210 | static char *add_name(char *buf, char *s, const char *name) |
Miklos Szeredi | 85c74fc | 2001-10-28 19:44:14 +0000 | [diff] [blame] | 211 | { |
Miklos Szeredi | 97c61e9 | 2001-11-07 12:09:43 +0000 | [diff] [blame] | 212 | size_t len = strlen(name); |
| 213 | s -= len; |
| 214 | if(s <= buf) { |
| 215 | fprintf(stderr, "fuse: path too long: ...%s\n", s + len); |
| 216 | return NULL; |
Miklos Szeredi | 85c74fc | 2001-10-28 19:44:14 +0000 | [diff] [blame] | 217 | } |
Miklos Szeredi | 97c61e9 | 2001-11-07 12:09:43 +0000 | [diff] [blame] | 218 | strncpy(s, name, len); |
| 219 | s--; |
| 220 | *s = '/'; |
Miklos Szeredi | 85c74fc | 2001-10-28 19:44:14 +0000 | [diff] [blame] | 221 | |
Miklos Szeredi | 97c61e9 | 2001-11-07 12:09:43 +0000 | [diff] [blame] | 222 | return s; |
Miklos Szeredi | 85c74fc | 2001-10-28 19:44:14 +0000 | [diff] [blame] | 223 | } |
| 224 | |
Miklos Szeredi | a181e61 | 2001-11-06 12:03:23 +0000 | [diff] [blame] | 225 | static char *get_path_name(struct fuse *f, fino_t ino, const char *name) |
Miklos Szeredi | b483c93 | 2001-10-29 14:57:57 +0000 | [diff] [blame] | 226 | { |
Miklos Szeredi | 97c61e9 | 2001-11-07 12:09:43 +0000 | [diff] [blame] | 227 | char buf[FUSE_MAX_PATH]; |
| 228 | char *s = buf + FUSE_MAX_PATH - 1; |
| 229 | struct node *node; |
Miklos Szeredi | 5e18348 | 2001-10-31 14:52:35 +0000 | [diff] [blame] | 230 | |
Miklos Szeredi | 97c61e9 | 2001-11-07 12:09:43 +0000 | [diff] [blame] | 231 | *s = '\0'; |
Miklos Szeredi | a181e61 | 2001-11-06 12:03:23 +0000 | [diff] [blame] | 232 | |
Miklos Szeredi | 97c61e9 | 2001-11-07 12:09:43 +0000 | [diff] [blame] | 233 | if(name != NULL) { |
| 234 | s = add_name(buf, s, name); |
| 235 | if(s == NULL) |
| 236 | return NULL; |
| 237 | } |
| 238 | |
| 239 | pthread_mutex_lock(&f->lock); |
| 240 | for(node = get_node(f, ino); node->ino != FUSE_ROOT_INO; |
| 241 | node = get_node(f, node->parent)) { |
| 242 | if(node->name == NULL) { |
| 243 | s = NULL; |
| 244 | break; |
| 245 | } |
| 246 | |
| 247 | s = add_name(buf, s, node->name); |
| 248 | if(s == NULL) |
| 249 | break; |
| 250 | } |
| 251 | pthread_mutex_unlock(&f->lock); |
| 252 | |
| 253 | if(s == NULL) |
Miklos Szeredi | 5e18348 | 2001-10-31 14:52:35 +0000 | [diff] [blame] | 254 | return NULL; |
Miklos Szeredi | 97c61e9 | 2001-11-07 12:09:43 +0000 | [diff] [blame] | 255 | else if(*s == '\0') |
| 256 | return strdup("/"); |
| 257 | else |
| 258 | return strdup(s); |
| 259 | } |
Miklos Szeredi | a181e61 | 2001-11-06 12:03:23 +0000 | [diff] [blame] | 260 | |
Miklos Szeredi | 97c61e9 | 2001-11-07 12:09:43 +0000 | [diff] [blame] | 261 | static char *get_path(struct fuse *f, fino_t ino) |
| 262 | { |
| 263 | return get_path_name(f, ino, NULL); |
Miklos Szeredi | b483c93 | 2001-10-29 14:57:57 +0000 | [diff] [blame] | 264 | } |
| 265 | |
Miklos Szeredi | a181e61 | 2001-11-06 12:03:23 +0000 | [diff] [blame] | 266 | static void destroy_node(struct fuse *f, fino_t ino, int version) |
Miklos Szeredi | 85c74fc | 2001-10-28 19:44:14 +0000 | [diff] [blame] | 267 | { |
Miklos Szeredi | a181e61 | 2001-11-06 12:03:23 +0000 | [diff] [blame] | 268 | struct node *node; |
| 269 | |
| 270 | pthread_mutex_lock(&f->lock); |
Miklos Szeredi | 97c61e9 | 2001-11-07 12:09:43 +0000 | [diff] [blame] | 271 | node = get_node(f, ino); |
Miklos Szeredi | 39f2867 | 2001-11-14 14:52:54 +0000 | [diff] [blame] | 272 | if(node->version == version && ino != FUSE_ROOT_INO) { |
Miklos Szeredi | 97c61e9 | 2001-11-07 12:09:43 +0000 | [diff] [blame] | 273 | unhash_name(f, node); |
| 274 | unhash_ino(f, node); |
Miklos Szeredi | a181e61 | 2001-11-06 12:03:23 +0000 | [diff] [blame] | 275 | free_node(node); |
| 276 | } |
| 277 | pthread_mutex_unlock(&f->lock); |
| 278 | |
Miklos Szeredi | 85c74fc | 2001-10-28 19:44:14 +0000 | [diff] [blame] | 279 | } |
| 280 | |
Miklos Szeredi | 5e18348 | 2001-10-31 14:52:35 +0000 | [diff] [blame] | 281 | static void remove_node(struct fuse *f, fino_t dir, const char *name) |
| 282 | { |
Miklos Szeredi | a181e61 | 2001-11-06 12:03:23 +0000 | [diff] [blame] | 283 | struct node *node; |
| 284 | |
| 285 | pthread_mutex_lock(&f->lock); |
| 286 | node = lookup_node(f, dir, name); |
Miklos Szeredi | 97c61e9 | 2001-11-07 12:09:43 +0000 | [diff] [blame] | 287 | if(node == NULL) { |
| 288 | fprintf(stderr, "fuse internal error: unable to remove node %lu/%s\n", |
| 289 | dir, name); |
| 290 | abort(); |
| 291 | } |
| 292 | unhash_name(f, node); |
Miklos Szeredi | a181e61 | 2001-11-06 12:03:23 +0000 | [diff] [blame] | 293 | pthread_mutex_unlock(&f->lock); |
Miklos Szeredi | 5e18348 | 2001-10-31 14:52:35 +0000 | [diff] [blame] | 294 | } |
| 295 | |
Miklos Szeredi | 19dff1b | 2001-10-30 15:06:52 +0000 | [diff] [blame] | 296 | static void rename_node(struct fuse *f, fino_t olddir, const char *oldname, |
| 297 | fino_t newdir, const char *newname) |
| 298 | { |
Miklos Szeredi | a181e61 | 2001-11-06 12:03:23 +0000 | [diff] [blame] | 299 | struct node *node; |
| 300 | struct node *newnode; |
| 301 | |
| 302 | pthread_mutex_lock(&f->lock); |
| 303 | node = lookup_node(f, olddir, oldname); |
| 304 | newnode = lookup_node(f, newdir, newname); |
Miklos Szeredi | 97c61e9 | 2001-11-07 12:09:43 +0000 | [diff] [blame] | 305 | if(node == NULL) { |
| 306 | fprintf(stderr, "fuse internal error: unable to rename node %lu/%s\n", |
| 307 | olddir, oldname); |
| 308 | abort(); |
| 309 | } |
Miklos Szeredi | 19dff1b | 2001-10-30 15:06:52 +0000 | [diff] [blame] | 310 | |
Miklos Szeredi | 19dff1b | 2001-10-30 15:06:52 +0000 | [diff] [blame] | 311 | if(newnode != NULL) |
Miklos Szeredi | 97c61e9 | 2001-11-07 12:09:43 +0000 | [diff] [blame] | 312 | unhash_name(f, newnode); |
Miklos Szeredi | 19dff1b | 2001-10-30 15:06:52 +0000 | [diff] [blame] | 313 | |
Miklos Szeredi | 97c61e9 | 2001-11-07 12:09:43 +0000 | [diff] [blame] | 314 | unhash_name(f, node); |
| 315 | hash_name(f, node, newdir, newname); |
Miklos Szeredi | a181e61 | 2001-11-06 12:03:23 +0000 | [diff] [blame] | 316 | pthread_mutex_unlock(&f->lock); |
Miklos Szeredi | 19dff1b | 2001-10-30 15:06:52 +0000 | [diff] [blame] | 317 | } |
| 318 | |
Miklos Szeredi | 85c74fc | 2001-10-28 19:44:14 +0000 | [diff] [blame] | 319 | static void convert_stat(struct stat *stbuf, struct fuse_attr *attr) |
| 320 | { |
Miklos Szeredi | b595861 | 2004-02-20 14:10:49 +0000 | [diff] [blame] | 321 | attr->mode = stbuf->st_mode; |
| 322 | attr->nlink = stbuf->st_nlink; |
| 323 | attr->uid = stbuf->st_uid; |
| 324 | attr->gid = stbuf->st_gid; |
| 325 | attr->rdev = stbuf->st_rdev; |
| 326 | attr->size = stbuf->st_size; |
| 327 | attr->blocks = stbuf->st_blocks; |
| 328 | attr->atime = stbuf->st_atime; |
| 329 | attr->atimensec = stbuf->st_atim.tv_nsec; |
| 330 | attr->mtime = stbuf->st_mtime; |
| 331 | attr->mtimensec = stbuf->st_mtim.tv_nsec; |
| 332 | attr->ctime = stbuf->st_ctime; |
| 333 | attr->ctimensec = stbuf->st_ctim.tv_nsec; |
Miklos Szeredi | 85c74fc | 2001-10-28 19:44:14 +0000 | [diff] [blame] | 334 | } |
| 335 | |
Miklos Szeredi | a181e61 | 2001-11-06 12:03:23 +0000 | [diff] [blame] | 336 | static int fill_dir(struct fuse_dirhandle *dh, char *name, int type) |
Miklos Szeredi | 85c74fc | 2001-10-28 19:44:14 +0000 | [diff] [blame] | 337 | { |
| 338 | struct fuse_dirent dirent; |
| 339 | size_t reclen; |
| 340 | size_t res; |
| 341 | |
Miklos Szeredi | 4369643 | 2001-11-18 19:15:05 +0000 | [diff] [blame] | 342 | dirent.ino = (unsigned long) -1; |
Miklos Szeredi | 85c74fc | 2001-10-28 19:44:14 +0000 | [diff] [blame] | 343 | dirent.namelen = strlen(name); |
| 344 | strncpy(dirent.name, name, sizeof(dirent.name)); |
| 345 | dirent.type = type; |
| 346 | reclen = FUSE_DIRENT_SIZE(&dirent); |
| 347 | res = fwrite(&dirent, reclen, 1, dh->fp); |
| 348 | if(res == 0) { |
Miklos Szeredi | 9624998 | 2001-11-21 12:21:19 +0000 | [diff] [blame] | 349 | perror("fuse: writing directory file"); |
Miklos Szeredi | 85c74fc | 2001-10-28 19:44:14 +0000 | [diff] [blame] | 350 | return -EIO; |
| 351 | } |
| 352 | return 0; |
| 353 | } |
| 354 | |
Miklos Szeredi | 40b9a5a | 2002-12-10 16:09:02 +0000 | [diff] [blame] | 355 | static int send_reply_raw(struct fuse *f, char *outbuf, size_t outsize) |
Miklos Szeredi | 4369643 | 2001-11-18 19:15:05 +0000 | [diff] [blame] | 356 | { |
| 357 | int res; |
| 358 | |
| 359 | if((f->flags & FUSE_DEBUG)) { |
| 360 | struct fuse_out_header *out = (struct fuse_out_header *) outbuf; |
| 361 | printf(" unique: %i, error: %i (%s), outsize: %i\n", out->unique, |
| 362 | out->error, strerror(-out->error), outsize); |
| 363 | fflush(stdout); |
| 364 | } |
Miklos Szeredi | 99ddf0e | 2001-11-25 17:19:59 +0000 | [diff] [blame] | 365 | |
Miklos Szeredi | 4e71c9f | 2004-02-09 12:05:14 +0000 | [diff] [blame] | 366 | /* This needs to be done before the reply, otherwise the scheduler |
| 367 | could play tricks with us, and only let the counter be increased |
Miklos Szeredi | 99ddf0e | 2001-11-25 17:19:59 +0000 | [diff] [blame] | 368 | long after the operation is done */ |
| 369 | inc_avail(f); |
| 370 | |
Miklos Szeredi | 4369643 | 2001-11-18 19:15:05 +0000 | [diff] [blame] | 371 | res = write(f->fd, outbuf, outsize); |
| 372 | if(res == -1) { |
| 373 | /* ENOENT means the operation was interrupted */ |
Miklos Szeredi | 4e71c9f | 2004-02-09 12:05:14 +0000 | [diff] [blame] | 374 | if(!f->exited && errno != ENOENT) |
Miklos Szeredi | 9624998 | 2001-11-21 12:21:19 +0000 | [diff] [blame] | 375 | perror("fuse: writing device"); |
Miklos Szeredi | 40b9a5a | 2002-12-10 16:09:02 +0000 | [diff] [blame] | 376 | return -errno; |
Miklos Szeredi | 4369643 | 2001-11-18 19:15:05 +0000 | [diff] [blame] | 377 | } |
Miklos Szeredi | 40b9a5a | 2002-12-10 16:09:02 +0000 | [diff] [blame] | 378 | return 0; |
Miklos Szeredi | 4369643 | 2001-11-18 19:15:05 +0000 | [diff] [blame] | 379 | } |
| 380 | |
Miklos Szeredi | 40b9a5a | 2002-12-10 16:09:02 +0000 | [diff] [blame] | 381 | static int send_reply(struct fuse *f, struct fuse_in_header *in, int error, |
| 382 | void *arg, size_t argsize) |
Miklos Szeredi | 85c74fc | 2001-10-28 19:44:14 +0000 | [diff] [blame] | 383 | { |
Miklos Szeredi | 40b9a5a | 2002-12-10 16:09:02 +0000 | [diff] [blame] | 384 | int res; |
Miklos Szeredi | 85c74fc | 2001-10-28 19:44:14 +0000 | [diff] [blame] | 385 | char *outbuf; |
| 386 | size_t outsize; |
| 387 | struct fuse_out_header *out; |
| 388 | |
Miklos Szeredi | 0f48a26 | 2002-12-05 14:23:01 +0000 | [diff] [blame] | 389 | if(error <= -512 || error > 0) { |
| 390 | fprintf(stderr, "fuse: bad error value: %i\n", error); |
Miklos Szeredi | 19dff1b | 2001-10-30 15:06:52 +0000 | [diff] [blame] | 391 | error = -ERANGE; |
Miklos Szeredi | 85c74fc | 2001-10-28 19:44:14 +0000 | [diff] [blame] | 392 | } |
| 393 | |
Miklos Szeredi | 19dff1b | 2001-10-30 15:06:52 +0000 | [diff] [blame] | 394 | if(error) |
Miklos Szeredi | 85c74fc | 2001-10-28 19:44:14 +0000 | [diff] [blame] | 395 | argsize = 0; |
| 396 | |
| 397 | outsize = sizeof(struct fuse_out_header) + argsize; |
Miklos Szeredi | 97c61e9 | 2001-11-07 12:09:43 +0000 | [diff] [blame] | 398 | outbuf = (char *) malloc(outsize); |
Miklos Szeredi | 85c74fc | 2001-10-28 19:44:14 +0000 | [diff] [blame] | 399 | out = (struct fuse_out_header *) outbuf; |
Miklos Szeredi | 0f48a26 | 2002-12-05 14:23:01 +0000 | [diff] [blame] | 400 | memset(out, 0, sizeof(struct fuse_out_header)); |
Miklos Szeredi | 85c74fc | 2001-10-28 19:44:14 +0000 | [diff] [blame] | 401 | out->unique = in->unique; |
Miklos Szeredi | 19dff1b | 2001-10-30 15:06:52 +0000 | [diff] [blame] | 402 | out->error = error; |
Miklos Szeredi | 85c74fc | 2001-10-28 19:44:14 +0000 | [diff] [blame] | 403 | if(argsize != 0) |
| 404 | memcpy(outbuf + sizeof(struct fuse_out_header), arg, argsize); |
| 405 | |
Miklos Szeredi | 40b9a5a | 2002-12-10 16:09:02 +0000 | [diff] [blame] | 406 | res = send_reply_raw(f, outbuf, outsize); |
Miklos Szeredi | 97c61e9 | 2001-11-07 12:09:43 +0000 | [diff] [blame] | 407 | free(outbuf); |
Miklos Szeredi | 40b9a5a | 2002-12-10 16:09:02 +0000 | [diff] [blame] | 408 | |
| 409 | return res; |
Miklos Szeredi | 85c74fc | 2001-10-28 19:44:14 +0000 | [diff] [blame] | 410 | } |
| 411 | |
Miklos Szeredi | 76f6578 | 2004-02-19 16:55:40 +0000 | [diff] [blame] | 412 | static int lookup_path(struct fuse *f, fino_t ino, int version, char *name, |
Miklos Szeredi | 254d5ed | 2004-03-02 11:11:24 +0000 | [diff] [blame^] | 413 | const char *path, struct fuse_entry_out *arg) |
Miklos Szeredi | 76f6578 | 2004-02-19 16:55:40 +0000 | [diff] [blame] | 414 | { |
| 415 | int res; |
| 416 | struct stat buf; |
| 417 | |
| 418 | res = f->op.getattr(path, &buf); |
| 419 | if(res == 0) { |
| 420 | struct node *node; |
| 421 | |
Miklos Szeredi | 254d5ed | 2004-03-02 11:11:24 +0000 | [diff] [blame^] | 422 | memset(arg, 0, sizeof(struct fuse_entry_out)); |
Miklos Szeredi | 76f6578 | 2004-02-19 16:55:40 +0000 | [diff] [blame] | 423 | convert_stat(&buf, &arg->attr); |
| 424 | node = find_node(f, ino, name, &arg->attr, version); |
| 425 | arg->ino = node->ino; |
| 426 | arg->generation = node->generation; |
Miklos Szeredi | 254d5ed | 2004-03-02 11:11:24 +0000 | [diff] [blame^] | 427 | arg->entry_valid = ENTRY_REVALIDATE_TIME; |
| 428 | arg->entry_valid_nsec = 0; |
| 429 | arg->attr_valid = ATTR_REVALIDATE_TIME; |
| 430 | arg->attr_valid_nsec = 0; |
Miklos Szeredi | 76f6578 | 2004-02-19 16:55:40 +0000 | [diff] [blame] | 431 | if(f->flags & FUSE_DEBUG) { |
| 432 | printf(" INO: %li\n", arg->ino); |
| 433 | fflush(stdout); |
| 434 | } |
| 435 | } |
| 436 | return res; |
| 437 | } |
| 438 | |
Miklos Szeredi | 85c74fc | 2001-10-28 19:44:14 +0000 | [diff] [blame] | 439 | static void do_lookup(struct fuse *f, struct fuse_in_header *in, char *name) |
| 440 | { |
| 441 | int res; |
Miklos Szeredi | 19dff1b | 2001-10-30 15:06:52 +0000 | [diff] [blame] | 442 | char *path; |
Miklos Szeredi | 254d5ed | 2004-03-02 11:11:24 +0000 | [diff] [blame^] | 443 | struct fuse_entry_out arg; |
Miklos Szeredi | 85c74fc | 2001-10-28 19:44:14 +0000 | [diff] [blame] | 444 | |
Miklos Szeredi | 5e18348 | 2001-10-31 14:52:35 +0000 | [diff] [blame] | 445 | res = -ENOENT; |
Miklos Szeredi | a181e61 | 2001-11-06 12:03:23 +0000 | [diff] [blame] | 446 | path = get_path_name(f, in->ino, name); |
Miklos Szeredi | 5e18348 | 2001-10-31 14:52:35 +0000 | [diff] [blame] | 447 | if(path != NULL) { |
Miklos Szeredi | 6ebe234 | 2002-01-06 21:44:16 +0000 | [diff] [blame] | 448 | if(f->flags & FUSE_DEBUG) { |
| 449 | printf("LOOKUP %s\n", path); |
| 450 | fflush(stdout); |
| 451 | } |
Miklos Szeredi | 5e18348 | 2001-10-31 14:52:35 +0000 | [diff] [blame] | 452 | res = -ENOSYS; |
| 453 | if(f->op.getattr) |
Miklos Szeredi | 76f6578 | 2004-02-19 16:55:40 +0000 | [diff] [blame] | 454 | res = lookup_path(f, in->ino, in->unique, name, path, &arg); |
Miklos Szeredi | 97c61e9 | 2001-11-07 12:09:43 +0000 | [diff] [blame] | 455 | free(path); |
Miklos Szeredi | 5e18348 | 2001-10-31 14:52:35 +0000 | [diff] [blame] | 456 | } |
Miklos Szeredi | 85c74fc | 2001-10-28 19:44:14 +0000 | [diff] [blame] | 457 | send_reply(f, in, res, &arg, sizeof(arg)); |
| 458 | } |
| 459 | |
Miklos Szeredi | a181e61 | 2001-11-06 12:03:23 +0000 | [diff] [blame] | 460 | static void do_forget(struct fuse *f, struct fuse_in_header *in, |
| 461 | struct fuse_forget_in *arg) |
Miklos Szeredi | 85c74fc | 2001-10-28 19:44:14 +0000 | [diff] [blame] | 462 | { |
Miklos Szeredi | 4369643 | 2001-11-18 19:15:05 +0000 | [diff] [blame] | 463 | if(f->flags & FUSE_DEBUG) { |
| 464 | printf("FORGET %li/%i\n", in->ino, arg->version); |
| 465 | fflush(stdout); |
| 466 | } |
Miklos Szeredi | a181e61 | 2001-11-06 12:03:23 +0000 | [diff] [blame] | 467 | destroy_node(f, in->ino, arg->version); |
Miklos Szeredi | 85c74fc | 2001-10-28 19:44:14 +0000 | [diff] [blame] | 468 | } |
| 469 | |
| 470 | static void do_getattr(struct fuse *f, struct fuse_in_header *in) |
| 471 | { |
| 472 | int res; |
Miklos Szeredi | 19dff1b | 2001-10-30 15:06:52 +0000 | [diff] [blame] | 473 | char *path; |
| 474 | struct stat buf; |
Miklos Szeredi | 254d5ed | 2004-03-02 11:11:24 +0000 | [diff] [blame^] | 475 | struct fuse_attr_out arg; |
Miklos Szeredi | 85c74fc | 2001-10-28 19:44:14 +0000 | [diff] [blame] | 476 | |
Miklos Szeredi | 5e18348 | 2001-10-31 14:52:35 +0000 | [diff] [blame] | 477 | res = -ENOENT; |
Miklos Szeredi | a181e61 | 2001-11-06 12:03:23 +0000 | [diff] [blame] | 478 | path = get_path(f, in->ino); |
Miklos Szeredi | 5e18348 | 2001-10-31 14:52:35 +0000 | [diff] [blame] | 479 | if(path != NULL) { |
| 480 | res = -ENOSYS; |
| 481 | if(f->op.getattr) |
Miklos Szeredi | 0a7077f | 2001-11-11 18:20:17 +0000 | [diff] [blame] | 482 | res = f->op.getattr(path, &buf); |
Miklos Szeredi | 97c61e9 | 2001-11-07 12:09:43 +0000 | [diff] [blame] | 483 | free(path); |
Miklos Szeredi | 5e18348 | 2001-10-31 14:52:35 +0000 | [diff] [blame] | 484 | } |
Miklos Szeredi | 0f48a26 | 2002-12-05 14:23:01 +0000 | [diff] [blame] | 485 | |
| 486 | if(res == 0) { |
Miklos Szeredi | 254d5ed | 2004-03-02 11:11:24 +0000 | [diff] [blame^] | 487 | memset(&arg, 0, sizeof(struct fuse_attr_out)); |
| 488 | arg.attr_valid = ATTR_REVALIDATE_TIME; |
| 489 | arg.attr_valid_nsec = 0; |
Miklos Szeredi | 19dff1b | 2001-10-30 15:06:52 +0000 | [diff] [blame] | 490 | convert_stat(&buf, &arg.attr); |
Miklos Szeredi | 0f48a26 | 2002-12-05 14:23:01 +0000 | [diff] [blame] | 491 | } |
Miklos Szeredi | 19dff1b | 2001-10-30 15:06:52 +0000 | [diff] [blame] | 492 | |
Miklos Szeredi | 85c74fc | 2001-10-28 19:44:14 +0000 | [diff] [blame] | 493 | send_reply(f, in, res, &arg, sizeof(arg)); |
| 494 | } |
| 495 | |
Miklos Szeredi | 680a69a | 2001-11-16 13:31:14 +0000 | [diff] [blame] | 496 | static int do_chmod(struct fuse *f, const char *path, struct fuse_attr *attr) |
Miklos Szeredi | f3ea83b | 2001-11-07 14:55:16 +0000 | [diff] [blame] | 497 | { |
| 498 | int res; |
| 499 | |
| 500 | res = -ENOSYS; |
| 501 | if(f->op.chmod) |
Miklos Szeredi | 0a7077f | 2001-11-11 18:20:17 +0000 | [diff] [blame] | 502 | res = f->op.chmod(path, attr->mode); |
Miklos Szeredi | f3ea83b | 2001-11-07 14:55:16 +0000 | [diff] [blame] | 503 | |
| 504 | return res; |
| 505 | } |
| 506 | |
Miklos Szeredi | 680a69a | 2001-11-16 13:31:14 +0000 | [diff] [blame] | 507 | static int do_chown(struct fuse *f, const char *path, struct fuse_attr *attr, |
Miklos Szeredi | 2e50d43 | 2001-12-20 12:17:25 +0000 | [diff] [blame] | 508 | int valid) |
Miklos Szeredi | f3ea83b | 2001-11-07 14:55:16 +0000 | [diff] [blame] | 509 | { |
| 510 | int res; |
| 511 | uid_t uid = (valid & FATTR_UID) ? attr->uid : (uid_t) -1; |
| 512 | gid_t gid = (valid & FATTR_GID) ? attr->gid : (gid_t) -1; |
| 513 | |
| 514 | res = -ENOSYS; |
| 515 | if(f->op.chown) |
Miklos Szeredi | 0a7077f | 2001-11-11 18:20:17 +0000 | [diff] [blame] | 516 | res = f->op.chown(path, uid, gid); |
Miklos Szeredi | f3ea83b | 2001-11-07 14:55:16 +0000 | [diff] [blame] | 517 | |
| 518 | return res; |
| 519 | } |
| 520 | |
Miklos Szeredi | 680a69a | 2001-11-16 13:31:14 +0000 | [diff] [blame] | 521 | static int do_truncate(struct fuse *f, const char *path, |
| 522 | struct fuse_attr *attr) |
Miklos Szeredi | f3ea83b | 2001-11-07 14:55:16 +0000 | [diff] [blame] | 523 | { |
| 524 | int res; |
| 525 | |
| 526 | res = -ENOSYS; |
| 527 | if(f->op.truncate) |
Miklos Szeredi | 0a7077f | 2001-11-11 18:20:17 +0000 | [diff] [blame] | 528 | res = f->op.truncate(path, attr->size); |
Miklos Szeredi | f3ea83b | 2001-11-07 14:55:16 +0000 | [diff] [blame] | 529 | |
| 530 | return res; |
| 531 | } |
| 532 | |
Miklos Szeredi | 680a69a | 2001-11-16 13:31:14 +0000 | [diff] [blame] | 533 | static int do_utime(struct fuse *f, const char *path, struct fuse_attr *attr) |
Miklos Szeredi | f3ea83b | 2001-11-07 14:55:16 +0000 | [diff] [blame] | 534 | { |
| 535 | int res; |
| 536 | struct utimbuf buf; |
| 537 | buf.actime = attr->atime; |
| 538 | buf.modtime = attr->mtime; |
| 539 | res = -ENOSYS; |
| 540 | if(f->op.utime) |
Miklos Szeredi | 0a7077f | 2001-11-11 18:20:17 +0000 | [diff] [blame] | 541 | res = f->op.utime(path, &buf); |
Miklos Szeredi | f3ea83b | 2001-11-07 14:55:16 +0000 | [diff] [blame] | 542 | |
| 543 | return res; |
| 544 | } |
| 545 | |
Miklos Szeredi | 5e18348 | 2001-10-31 14:52:35 +0000 | [diff] [blame] | 546 | static void do_setattr(struct fuse *f, struct fuse_in_header *in, |
| 547 | struct fuse_setattr_in *arg) |
| 548 | { |
| 549 | int res; |
| 550 | char *path; |
| 551 | int valid = arg->valid; |
| 552 | struct fuse_attr *attr = &arg->attr; |
Miklos Szeredi | 254d5ed | 2004-03-02 11:11:24 +0000 | [diff] [blame^] | 553 | struct fuse_attr_out outarg; |
Miklos Szeredi | 5e18348 | 2001-10-31 14:52:35 +0000 | [diff] [blame] | 554 | |
| 555 | res = -ENOENT; |
Miklos Szeredi | a181e61 | 2001-11-06 12:03:23 +0000 | [diff] [blame] | 556 | path = get_path(f, in->ino); |
Miklos Szeredi | 5e18348 | 2001-10-31 14:52:35 +0000 | [diff] [blame] | 557 | if(path != NULL) { |
Miklos Szeredi | f3ea83b | 2001-11-07 14:55:16 +0000 | [diff] [blame] | 558 | res = -ENOSYS; |
| 559 | if(f->op.getattr) { |
| 560 | res = 0; |
| 561 | if(!res && (valid & FATTR_MODE)) |
Miklos Szeredi | 0a7077f | 2001-11-11 18:20:17 +0000 | [diff] [blame] | 562 | res = do_chmod(f, path, attr); |
Miklos Szeredi | f3ea83b | 2001-11-07 14:55:16 +0000 | [diff] [blame] | 563 | if(!res && (valid & (FATTR_UID | FATTR_GID))) |
Miklos Szeredi | 0a7077f | 2001-11-11 18:20:17 +0000 | [diff] [blame] | 564 | res = do_chown(f, path, attr, valid); |
Miklos Szeredi | f3ea83b | 2001-11-07 14:55:16 +0000 | [diff] [blame] | 565 | if(!res && (valid & FATTR_SIZE)) |
Miklos Szeredi | 0a7077f | 2001-11-11 18:20:17 +0000 | [diff] [blame] | 566 | res = do_truncate(f, path, attr); |
Miklos Szeredi | b595861 | 2004-02-20 14:10:49 +0000 | [diff] [blame] | 567 | if(!res && (valid & (FATTR_ATIME | FATTR_MTIME)) == |
| 568 | (FATTR_ATIME | FATTR_MTIME)) |
Miklos Szeredi | 0a7077f | 2001-11-11 18:20:17 +0000 | [diff] [blame] | 569 | res = do_utime(f, path, attr); |
Miklos Szeredi | f3ea83b | 2001-11-07 14:55:16 +0000 | [diff] [blame] | 570 | if(!res) { |
| 571 | struct stat buf; |
Miklos Szeredi | 0a7077f | 2001-11-11 18:20:17 +0000 | [diff] [blame] | 572 | res = f->op.getattr(path, &buf); |
Miklos Szeredi | 0f48a26 | 2002-12-05 14:23:01 +0000 | [diff] [blame] | 573 | if(!res) { |
Miklos Szeredi | 254d5ed | 2004-03-02 11:11:24 +0000 | [diff] [blame^] | 574 | memset(&outarg, 0, sizeof(struct fuse_attr_out)); |
| 575 | outarg.attr_valid = ATTR_REVALIDATE_TIME; |
| 576 | outarg.attr_valid_nsec = 0; |
Miklos Szeredi | f3ea83b | 2001-11-07 14:55:16 +0000 | [diff] [blame] | 577 | convert_stat(&buf, &outarg.attr); |
Miklos Szeredi | 0f48a26 | 2002-12-05 14:23:01 +0000 | [diff] [blame] | 578 | } |
Miklos Szeredi | a181e61 | 2001-11-06 12:03:23 +0000 | [diff] [blame] | 579 | } |
Miklos Szeredi | 5e18348 | 2001-10-31 14:52:35 +0000 | [diff] [blame] | 580 | } |
Miklos Szeredi | 97c61e9 | 2001-11-07 12:09:43 +0000 | [diff] [blame] | 581 | free(path); |
Miklos Szeredi | 5e18348 | 2001-10-31 14:52:35 +0000 | [diff] [blame] | 582 | } |
Miklos Szeredi | a181e61 | 2001-11-06 12:03:23 +0000 | [diff] [blame] | 583 | send_reply(f, in, res, &outarg, sizeof(outarg)); |
Miklos Szeredi | 5e18348 | 2001-10-31 14:52:35 +0000 | [diff] [blame] | 584 | } |
| 585 | |
Miklos Szeredi | 85c74fc | 2001-10-28 19:44:14 +0000 | [diff] [blame] | 586 | static void do_readlink(struct fuse *f, struct fuse_in_header *in) |
| 587 | { |
| 588 | int res; |
| 589 | char link[PATH_MAX + 1]; |
Miklos Szeredi | b483c93 | 2001-10-29 14:57:57 +0000 | [diff] [blame] | 590 | char *path; |
Miklos Szeredi | 85c74fc | 2001-10-28 19:44:14 +0000 | [diff] [blame] | 591 | |
Miklos Szeredi | 5e18348 | 2001-10-31 14:52:35 +0000 | [diff] [blame] | 592 | res = -ENOENT; |
Miklos Szeredi | a181e61 | 2001-11-06 12:03:23 +0000 | [diff] [blame] | 593 | path = get_path(f, in->ino); |
Miklos Szeredi | 5e18348 | 2001-10-31 14:52:35 +0000 | [diff] [blame] | 594 | if(path != NULL) { |
| 595 | res = -ENOSYS; |
| 596 | if(f->op.readlink) |
Miklos Szeredi | 0a7077f | 2001-11-11 18:20:17 +0000 | [diff] [blame] | 597 | res = f->op.readlink(path, link, sizeof(link)); |
Miklos Szeredi | 97c61e9 | 2001-11-07 12:09:43 +0000 | [diff] [blame] | 598 | free(path); |
Miklos Szeredi | 5e18348 | 2001-10-31 14:52:35 +0000 | [diff] [blame] | 599 | } |
Miklos Szeredi | 2df1c04 | 2001-11-06 15:07:17 +0000 | [diff] [blame] | 600 | link[PATH_MAX] = '\0'; |
Miklos Szeredi | 4b2bef4 | 2002-01-09 12:23:27 +0000 | [diff] [blame] | 601 | send_reply(f, in, res, link, res == 0 ? strlen(link) : 0); |
Miklos Szeredi | 85c74fc | 2001-10-28 19:44:14 +0000 | [diff] [blame] | 602 | } |
| 603 | |
| 604 | static void do_getdir(struct fuse *f, struct fuse_in_header *in) |
| 605 | { |
| 606 | int res; |
| 607 | struct fuse_getdir_out arg; |
Miklos Szeredi | a181e61 | 2001-11-06 12:03:23 +0000 | [diff] [blame] | 608 | struct fuse_dirhandle dh; |
Miklos Szeredi | b483c93 | 2001-10-29 14:57:57 +0000 | [diff] [blame] | 609 | char *path; |
Miklos Szeredi | 85c74fc | 2001-10-28 19:44:14 +0000 | [diff] [blame] | 610 | |
Miklos Szeredi | b483c93 | 2001-10-29 14:57:57 +0000 | [diff] [blame] | 611 | dh.fuse = f; |
| 612 | dh.fp = tmpfile(); |
| 613 | dh.dir = in->ino; |
Miklos Szeredi | 5e18348 | 2001-10-31 14:52:35 +0000 | [diff] [blame] | 614 | res = -ENOENT; |
Miklos Szeredi | a181e61 | 2001-11-06 12:03:23 +0000 | [diff] [blame] | 615 | path = get_path(f, in->ino); |
Miklos Szeredi | 5e18348 | 2001-10-31 14:52:35 +0000 | [diff] [blame] | 616 | if(path != NULL) { |
| 617 | res = -ENOSYS; |
| 618 | if(f->op.getdir) |
Miklos Szeredi | 0a7077f | 2001-11-11 18:20:17 +0000 | [diff] [blame] | 619 | res = f->op.getdir(path, &dh, (fuse_dirfil_t) fill_dir); |
Miklos Szeredi | 97c61e9 | 2001-11-07 12:09:43 +0000 | [diff] [blame] | 620 | free(path); |
Miklos Szeredi | 5e18348 | 2001-10-31 14:52:35 +0000 | [diff] [blame] | 621 | } |
Miklos Szeredi | b483c93 | 2001-10-29 14:57:57 +0000 | [diff] [blame] | 622 | fflush(dh.fp); |
Miklos Szeredi | 0f48a26 | 2002-12-05 14:23:01 +0000 | [diff] [blame] | 623 | |
| 624 | memset(&arg, 0, sizeof(struct fuse_getdir_out)); |
Miklos Szeredi | b483c93 | 2001-10-29 14:57:57 +0000 | [diff] [blame] | 625 | arg.fd = fileno(dh.fp); |
Miklos Szeredi | 85c74fc | 2001-10-28 19:44:14 +0000 | [diff] [blame] | 626 | send_reply(f, in, res, &arg, sizeof(arg)); |
Miklos Szeredi | b483c93 | 2001-10-29 14:57:57 +0000 | [diff] [blame] | 627 | fclose(dh.fp); |
Miklos Szeredi | 85c74fc | 2001-10-28 19:44:14 +0000 | [diff] [blame] | 628 | } |
| 629 | |
Miklos Szeredi | b483c93 | 2001-10-29 14:57:57 +0000 | [diff] [blame] | 630 | static void do_mknod(struct fuse *f, struct fuse_in_header *in, |
| 631 | struct fuse_mknod_in *inarg) |
| 632 | { |
| 633 | int res; |
| 634 | char *path; |
Miklos Szeredi | 76f6578 | 2004-02-19 16:55:40 +0000 | [diff] [blame] | 635 | char *name = PARAM(inarg); |
Miklos Szeredi | 254d5ed | 2004-03-02 11:11:24 +0000 | [diff] [blame^] | 636 | struct fuse_entry_out outarg; |
Miklos Szeredi | b483c93 | 2001-10-29 14:57:57 +0000 | [diff] [blame] | 637 | |
Miklos Szeredi | 5e18348 | 2001-10-31 14:52:35 +0000 | [diff] [blame] | 638 | res = -ENOENT; |
Miklos Szeredi | 76f6578 | 2004-02-19 16:55:40 +0000 | [diff] [blame] | 639 | path = get_path_name(f, in->ino, name); |
Miklos Szeredi | 5e18348 | 2001-10-31 14:52:35 +0000 | [diff] [blame] | 640 | if(path != NULL) { |
Miklos Szeredi | 76f6578 | 2004-02-19 16:55:40 +0000 | [diff] [blame] | 641 | if(f->flags & FUSE_DEBUG) { |
| 642 | printf("MKNOD %s\n", path); |
| 643 | fflush(stdout); |
| 644 | } |
Miklos Szeredi | 5e18348 | 2001-10-31 14:52:35 +0000 | [diff] [blame] | 645 | res = -ENOSYS; |
| 646 | if(f->op.mknod && f->op.getattr) { |
Miklos Szeredi | 0a7077f | 2001-11-11 18:20:17 +0000 | [diff] [blame] | 647 | res = f->op.mknod(path, inarg->mode, inarg->rdev); |
Miklos Szeredi | 5e18348 | 2001-10-31 14:52:35 +0000 | [diff] [blame] | 648 | if(res == 0) |
Miklos Szeredi | 76f6578 | 2004-02-19 16:55:40 +0000 | [diff] [blame] | 649 | res = lookup_path(f, in->ino, in->unique, name, path, &outarg); |
Miklos Szeredi | 5e18348 | 2001-10-31 14:52:35 +0000 | [diff] [blame] | 650 | } |
Miklos Szeredi | 97c61e9 | 2001-11-07 12:09:43 +0000 | [diff] [blame] | 651 | free(path); |
Miklos Szeredi | b483c93 | 2001-10-29 14:57:57 +0000 | [diff] [blame] | 652 | } |
Miklos Szeredi | b483c93 | 2001-10-29 14:57:57 +0000 | [diff] [blame] | 653 | send_reply(f, in, res, &outarg, sizeof(outarg)); |
| 654 | } |
| 655 | |
| 656 | static void do_mkdir(struct fuse *f, struct fuse_in_header *in, |
| 657 | struct fuse_mkdir_in *inarg) |
| 658 | { |
| 659 | int res; |
| 660 | char *path; |
Miklos Szeredi | 76f6578 | 2004-02-19 16:55:40 +0000 | [diff] [blame] | 661 | char *name = PARAM(inarg); |
Miklos Szeredi | 254d5ed | 2004-03-02 11:11:24 +0000 | [diff] [blame^] | 662 | struct fuse_entry_out outarg; |
Miklos Szeredi | b483c93 | 2001-10-29 14:57:57 +0000 | [diff] [blame] | 663 | |
Miklos Szeredi | 5e18348 | 2001-10-31 14:52:35 +0000 | [diff] [blame] | 664 | res = -ENOENT; |
Miklos Szeredi | 76f6578 | 2004-02-19 16:55:40 +0000 | [diff] [blame] | 665 | path = get_path_name(f, in->ino, name); |
Miklos Szeredi | 5e18348 | 2001-10-31 14:52:35 +0000 | [diff] [blame] | 666 | if(path != NULL) { |
Miklos Szeredi | 76f6578 | 2004-02-19 16:55:40 +0000 | [diff] [blame] | 667 | if(f->flags & FUSE_DEBUG) { |
| 668 | printf("MKDIR %s\n", path); |
| 669 | fflush(stdout); |
| 670 | } |
Miklos Szeredi | 5e18348 | 2001-10-31 14:52:35 +0000 | [diff] [blame] | 671 | res = -ENOSYS; |
Miklos Szeredi | 76f6578 | 2004-02-19 16:55:40 +0000 | [diff] [blame] | 672 | if(f->op.mkdir && f->op.getattr) { |
Miklos Szeredi | 0a7077f | 2001-11-11 18:20:17 +0000 | [diff] [blame] | 673 | res = f->op.mkdir(path, inarg->mode); |
Miklos Szeredi | 76f6578 | 2004-02-19 16:55:40 +0000 | [diff] [blame] | 674 | if(res == 0) |
| 675 | res = lookup_path(f, in->ino, in->unique, name, path, &outarg); |
| 676 | } |
Miklos Szeredi | 97c61e9 | 2001-11-07 12:09:43 +0000 | [diff] [blame] | 677 | free(path); |
Miklos Szeredi | 5e18348 | 2001-10-31 14:52:35 +0000 | [diff] [blame] | 678 | } |
Miklos Szeredi | 76f6578 | 2004-02-19 16:55:40 +0000 | [diff] [blame] | 679 | send_reply(f, in, res, &outarg, sizeof(outarg)); |
Miklos Szeredi | b483c93 | 2001-10-29 14:57:57 +0000 | [diff] [blame] | 680 | } |
| 681 | |
Miklos Szeredi | b595861 | 2004-02-20 14:10:49 +0000 | [diff] [blame] | 682 | static void do_unlink(struct fuse *f, struct fuse_in_header *in, char *name) |
Miklos Szeredi | b483c93 | 2001-10-29 14:57:57 +0000 | [diff] [blame] | 683 | { |
| 684 | int res; |
| 685 | char *path; |
| 686 | |
Miklos Szeredi | 5e18348 | 2001-10-31 14:52:35 +0000 | [diff] [blame] | 687 | res = -ENOENT; |
Miklos Szeredi | a181e61 | 2001-11-06 12:03:23 +0000 | [diff] [blame] | 688 | path = get_path_name(f, in->ino, name); |
Miklos Szeredi | 5e18348 | 2001-10-31 14:52:35 +0000 | [diff] [blame] | 689 | if(path != NULL) { |
| 690 | res = -ENOSYS; |
Miklos Szeredi | b595861 | 2004-02-20 14:10:49 +0000 | [diff] [blame] | 691 | if(f->op.unlink) { |
| 692 | res = f->op.unlink(path); |
| 693 | if(res == 0) |
| 694 | remove_node(f, in->ino, name); |
Miklos Szeredi | 5e18348 | 2001-10-31 14:52:35 +0000 | [diff] [blame] | 695 | } |
Miklos Szeredi | 97c61e9 | 2001-11-07 12:09:43 +0000 | [diff] [blame] | 696 | free(path); |
Miklos Szeredi | b483c93 | 2001-10-29 14:57:57 +0000 | [diff] [blame] | 697 | } |
Miklos Szeredi | b595861 | 2004-02-20 14:10:49 +0000 | [diff] [blame] | 698 | send_reply(f, in, res, NULL, 0); |
| 699 | } |
| 700 | |
| 701 | static void do_rmdir(struct fuse *f, struct fuse_in_header *in, char *name) |
| 702 | { |
| 703 | int res; |
| 704 | char *path; |
| 705 | |
| 706 | res = -ENOENT; |
| 707 | path = get_path_name(f, in->ino, name); |
| 708 | if(path != NULL) { |
| 709 | res = -ENOSYS; |
| 710 | if(f->op.rmdir) { |
| 711 | res = f->op.rmdir(path); |
| 712 | if(res == 0) |
| 713 | remove_node(f, in->ino, name); |
| 714 | } |
| 715 | free(path); |
| 716 | } |
Miklos Szeredi | b483c93 | 2001-10-29 14:57:57 +0000 | [diff] [blame] | 717 | send_reply(f, in, res, NULL, 0); |
| 718 | } |
| 719 | |
| 720 | static void do_symlink(struct fuse *f, struct fuse_in_header *in, char *name, |
| 721 | char *link) |
| 722 | { |
| 723 | int res; |
| 724 | char *path; |
Miklos Szeredi | 254d5ed | 2004-03-02 11:11:24 +0000 | [diff] [blame^] | 725 | struct fuse_entry_out outarg; |
Miklos Szeredi | b483c93 | 2001-10-29 14:57:57 +0000 | [diff] [blame] | 726 | |
Miklos Szeredi | 5e18348 | 2001-10-31 14:52:35 +0000 | [diff] [blame] | 727 | res = -ENOENT; |
Miklos Szeredi | a181e61 | 2001-11-06 12:03:23 +0000 | [diff] [blame] | 728 | path = get_path_name(f, in->ino, name); |
Miklos Szeredi | 5e18348 | 2001-10-31 14:52:35 +0000 | [diff] [blame] | 729 | if(path != NULL) { |
Miklos Szeredi | 76f6578 | 2004-02-19 16:55:40 +0000 | [diff] [blame] | 730 | if(f->flags & FUSE_DEBUG) { |
| 731 | printf("SYMLINK %s\n", path); |
| 732 | fflush(stdout); |
| 733 | } |
Miklos Szeredi | 5e18348 | 2001-10-31 14:52:35 +0000 | [diff] [blame] | 734 | res = -ENOSYS; |
Miklos Szeredi | 76f6578 | 2004-02-19 16:55:40 +0000 | [diff] [blame] | 735 | if(f->op.symlink && f->op.getattr) { |
Miklos Szeredi | 0a7077f | 2001-11-11 18:20:17 +0000 | [diff] [blame] | 736 | res = f->op.symlink(link, path); |
Miklos Szeredi | 76f6578 | 2004-02-19 16:55:40 +0000 | [diff] [blame] | 737 | if(res == 0) |
| 738 | res = lookup_path(f, in->ino, in->unique, name, path, &outarg); |
| 739 | } |
Miklos Szeredi | 97c61e9 | 2001-11-07 12:09:43 +0000 | [diff] [blame] | 740 | free(path); |
Miklos Szeredi | 5e18348 | 2001-10-31 14:52:35 +0000 | [diff] [blame] | 741 | } |
Miklos Szeredi | 76f6578 | 2004-02-19 16:55:40 +0000 | [diff] [blame] | 742 | send_reply(f, in, res, &outarg, sizeof(outarg)); |
Miklos Szeredi | b483c93 | 2001-10-29 14:57:57 +0000 | [diff] [blame] | 743 | } |
| 744 | |
Miklos Szeredi | 19dff1b | 2001-10-30 15:06:52 +0000 | [diff] [blame] | 745 | static void do_rename(struct fuse *f, struct fuse_in_header *in, |
| 746 | struct fuse_rename_in *inarg) |
| 747 | { |
| 748 | int res; |
| 749 | fino_t olddir = in->ino; |
| 750 | fino_t newdir = inarg->newdir; |
Miklos Szeredi | 6bf8b68 | 2002-10-28 08:49:39 +0000 | [diff] [blame] | 751 | char *oldname = PARAM(inarg); |
| 752 | char *newname = oldname + strlen(oldname) + 1; |
Miklos Szeredi | 5e18348 | 2001-10-31 14:52:35 +0000 | [diff] [blame] | 753 | char *oldpath; |
| 754 | char *newpath; |
Miklos Szeredi | 19dff1b | 2001-10-30 15:06:52 +0000 | [diff] [blame] | 755 | |
Miklos Szeredi | 5e18348 | 2001-10-31 14:52:35 +0000 | [diff] [blame] | 756 | res = -ENOENT; |
Miklos Szeredi | a181e61 | 2001-11-06 12:03:23 +0000 | [diff] [blame] | 757 | oldpath = get_path_name(f, olddir, oldname); |
Miklos Szeredi | 5e18348 | 2001-10-31 14:52:35 +0000 | [diff] [blame] | 758 | if(oldpath != NULL) { |
Miklos Szeredi | a181e61 | 2001-11-06 12:03:23 +0000 | [diff] [blame] | 759 | newpath = get_path_name(f, newdir, newname); |
Miklos Szeredi | 5e18348 | 2001-10-31 14:52:35 +0000 | [diff] [blame] | 760 | if(newpath != NULL) { |
| 761 | res = -ENOSYS; |
| 762 | if(f->op.rename) |
Miklos Szeredi | 0a7077f | 2001-11-11 18:20:17 +0000 | [diff] [blame] | 763 | res = f->op.rename(oldpath, newpath); |
Miklos Szeredi | 5e18348 | 2001-10-31 14:52:35 +0000 | [diff] [blame] | 764 | if(res == 0) |
| 765 | rename_node(f, olddir, oldname, newdir, newname); |
Miklos Szeredi | 97c61e9 | 2001-11-07 12:09:43 +0000 | [diff] [blame] | 766 | free(newpath); |
Miklos Szeredi | 5e18348 | 2001-10-31 14:52:35 +0000 | [diff] [blame] | 767 | } |
Miklos Szeredi | 97c61e9 | 2001-11-07 12:09:43 +0000 | [diff] [blame] | 768 | free(oldpath); |
Miklos Szeredi | 5e18348 | 2001-10-31 14:52:35 +0000 | [diff] [blame] | 769 | } |
Miklos Szeredi | 19dff1b | 2001-10-30 15:06:52 +0000 | [diff] [blame] | 770 | send_reply(f, in, res, NULL, 0); |
| 771 | } |
| 772 | |
| 773 | static void do_link(struct fuse *f, struct fuse_in_header *in, |
Miklos Szeredi | 5e18348 | 2001-10-31 14:52:35 +0000 | [diff] [blame] | 774 | struct fuse_link_in *arg) |
Miklos Szeredi | 19dff1b | 2001-10-30 15:06:52 +0000 | [diff] [blame] | 775 | { |
| 776 | int res; |
Miklos Szeredi | 5e18348 | 2001-10-31 14:52:35 +0000 | [diff] [blame] | 777 | char *oldpath; |
| 778 | char *newpath; |
Miklos Szeredi | 76f6578 | 2004-02-19 16:55:40 +0000 | [diff] [blame] | 779 | char *name = PARAM(arg); |
Miklos Szeredi | 254d5ed | 2004-03-02 11:11:24 +0000 | [diff] [blame^] | 780 | struct fuse_entry_out outarg; |
Miklos Szeredi | 19dff1b | 2001-10-30 15:06:52 +0000 | [diff] [blame] | 781 | |
Miklos Szeredi | 5e18348 | 2001-10-31 14:52:35 +0000 | [diff] [blame] | 782 | res = -ENOENT; |
Miklos Szeredi | a181e61 | 2001-11-06 12:03:23 +0000 | [diff] [blame] | 783 | oldpath = get_path(f, in->ino); |
Miklos Szeredi | 5e18348 | 2001-10-31 14:52:35 +0000 | [diff] [blame] | 784 | if(oldpath != NULL) { |
Miklos Szeredi | 76f6578 | 2004-02-19 16:55:40 +0000 | [diff] [blame] | 785 | newpath = get_path_name(f, arg->newdir, name); |
Miklos Szeredi | 5e18348 | 2001-10-31 14:52:35 +0000 | [diff] [blame] | 786 | if(newpath != NULL) { |
Miklos Szeredi | 76f6578 | 2004-02-19 16:55:40 +0000 | [diff] [blame] | 787 | if(f->flags & FUSE_DEBUG) { |
| 788 | printf("LINK %s\n", newpath); |
| 789 | fflush(stdout); |
| 790 | } |
Miklos Szeredi | 5e18348 | 2001-10-31 14:52:35 +0000 | [diff] [blame] | 791 | res = -ENOSYS; |
Miklos Szeredi | 76f6578 | 2004-02-19 16:55:40 +0000 | [diff] [blame] | 792 | if(f->op.link && f->op.getattr) { |
Miklos Szeredi | 0a7077f | 2001-11-11 18:20:17 +0000 | [diff] [blame] | 793 | res = f->op.link(oldpath, newpath); |
Miklos Szeredi | 76f6578 | 2004-02-19 16:55:40 +0000 | [diff] [blame] | 794 | if(res == 0) |
| 795 | res = lookup_path(f, arg->newdir, in->unique, name, |
| 796 | newpath, &outarg); |
| 797 | } |
Miklos Szeredi | 97c61e9 | 2001-11-07 12:09:43 +0000 | [diff] [blame] | 798 | free(newpath); |
Miklos Szeredi | 5e18348 | 2001-10-31 14:52:35 +0000 | [diff] [blame] | 799 | } |
Miklos Szeredi | 97c61e9 | 2001-11-07 12:09:43 +0000 | [diff] [blame] | 800 | free(oldpath); |
Miklos Szeredi | 5e18348 | 2001-10-31 14:52:35 +0000 | [diff] [blame] | 801 | } |
Miklos Szeredi | 76f6578 | 2004-02-19 16:55:40 +0000 | [diff] [blame] | 802 | send_reply(f, in, res, &outarg, sizeof(outarg)); |
Miklos Szeredi | 19dff1b | 2001-10-30 15:06:52 +0000 | [diff] [blame] | 803 | } |
| 804 | |
Miklos Szeredi | 5e18348 | 2001-10-31 14:52:35 +0000 | [diff] [blame] | 805 | static void do_open(struct fuse *f, struct fuse_in_header *in, |
| 806 | struct fuse_open_in *arg) |
| 807 | { |
| 808 | int res; |
Miklos Szeredi | 40b9a5a | 2002-12-10 16:09:02 +0000 | [diff] [blame] | 809 | int res2; |
Miklos Szeredi | 5e18348 | 2001-10-31 14:52:35 +0000 | [diff] [blame] | 810 | char *path; |
| 811 | |
| 812 | res = -ENOENT; |
Miklos Szeredi | a181e61 | 2001-11-06 12:03:23 +0000 | [diff] [blame] | 813 | path = get_path(f, in->ino); |
Miklos Szeredi | 5e18348 | 2001-10-31 14:52:35 +0000 | [diff] [blame] | 814 | if(path != NULL) { |
| 815 | res = -ENOSYS; |
| 816 | if(f->op.open) |
Miklos Szeredi | 0a7077f | 2001-11-11 18:20:17 +0000 | [diff] [blame] | 817 | res = f->op.open(path, arg->flags); |
Miklos Szeredi | 40b9a5a | 2002-12-10 16:09:02 +0000 | [diff] [blame] | 818 | } |
| 819 | res2 = send_reply(f, in, res, NULL, 0); |
| 820 | if(path != NULL) { |
| 821 | /* The open syscall was interrupted, so it must be cancelled */ |
| 822 | if(res == 0 && res2 == -ENOENT && f->op.release) |
Miklos Szeredi | 9478e86 | 2002-12-11 09:50:26 +0000 | [diff] [blame] | 823 | f->op.release(path, arg->flags); |
Miklos Szeredi | 97c61e9 | 2001-11-07 12:09:43 +0000 | [diff] [blame] | 824 | free(path); |
Miklos Szeredi | 5e18348 | 2001-10-31 14:52:35 +0000 | [diff] [blame] | 825 | } |
Miklos Szeredi | 5e18348 | 2001-10-31 14:52:35 +0000 | [diff] [blame] | 826 | } |
| 827 | |
Miklos Szeredi | 9478e86 | 2002-12-11 09:50:26 +0000 | [diff] [blame] | 828 | static void do_release(struct fuse *f, struct fuse_in_header *in, |
| 829 | struct fuse_open_in *arg) |
Miklos Szeredi | c8ba237 | 2002-12-10 12:26:00 +0000 | [diff] [blame] | 830 | { |
Miklos Szeredi | c8ba237 | 2002-12-10 12:26:00 +0000 | [diff] [blame] | 831 | char *path; |
| 832 | |
Miklos Szeredi | c8ba237 | 2002-12-10 12:26:00 +0000 | [diff] [blame] | 833 | path = get_path(f, in->ino); |
| 834 | if(path != NULL) { |
Miklos Szeredi | c8ba237 | 2002-12-10 12:26:00 +0000 | [diff] [blame] | 835 | if(f->op.release) |
Miklos Szeredi | 9478e86 | 2002-12-11 09:50:26 +0000 | [diff] [blame] | 836 | f->op.release(path, arg->flags); |
Miklos Szeredi | c8ba237 | 2002-12-10 12:26:00 +0000 | [diff] [blame] | 837 | free(path); |
| 838 | } |
Miklos Szeredi | c8ba237 | 2002-12-10 12:26:00 +0000 | [diff] [blame] | 839 | } |
| 840 | |
Miklos Szeredi | 5e18348 | 2001-10-31 14:52:35 +0000 | [diff] [blame] | 841 | static void do_read(struct fuse *f, struct fuse_in_header *in, |
| 842 | struct fuse_read_in *arg) |
| 843 | { |
| 844 | int res; |
| 845 | char *path; |
Miklos Szeredi | 4369643 | 2001-11-18 19:15:05 +0000 | [diff] [blame] | 846 | char *outbuf = (char *) malloc(sizeof(struct fuse_out_header) + arg->size); |
| 847 | struct fuse_out_header *out = (struct fuse_out_header *) outbuf; |
| 848 | char *buf = outbuf + sizeof(struct fuse_out_header); |
Miklos Szeredi | 5e18348 | 2001-10-31 14:52:35 +0000 | [diff] [blame] | 849 | size_t size; |
Miklos Szeredi | 4369643 | 2001-11-18 19:15:05 +0000 | [diff] [blame] | 850 | size_t outsize; |
Miklos Szeredi | 5e18348 | 2001-10-31 14:52:35 +0000 | [diff] [blame] | 851 | |
Miklos Szeredi | 97c61e9 | 2001-11-07 12:09:43 +0000 | [diff] [blame] | 852 | res = -ENOENT; |
Miklos Szeredi | a181e61 | 2001-11-06 12:03:23 +0000 | [diff] [blame] | 853 | path = get_path(f, in->ino); |
Miklos Szeredi | 5e18348 | 2001-10-31 14:52:35 +0000 | [diff] [blame] | 854 | if(path != NULL) { |
Miklos Szeredi | 6ebe234 | 2002-01-06 21:44:16 +0000 | [diff] [blame] | 855 | if(f->flags & FUSE_DEBUG) { |
| 856 | printf("READ %u bytes from %llu\n", arg->size, arg->offset); |
| 857 | fflush(stdout); |
| 858 | } |
| 859 | |
Miklos Szeredi | 5e18348 | 2001-10-31 14:52:35 +0000 | [diff] [blame] | 860 | res = -ENOSYS; |
Miklos Szeredi | a181e61 | 2001-11-06 12:03:23 +0000 | [diff] [blame] | 861 | if(f->op.read) |
Miklos Szeredi | 0a7077f | 2001-11-11 18:20:17 +0000 | [diff] [blame] | 862 | res = f->op.read(path, buf, arg->size, arg->offset); |
Miklos Szeredi | 97c61e9 | 2001-11-07 12:09:43 +0000 | [diff] [blame] | 863 | free(path); |
Miklos Szeredi | 5e18348 | 2001-10-31 14:52:35 +0000 | [diff] [blame] | 864 | } |
| 865 | |
| 866 | size = 0; |
| 867 | if(res > 0) { |
| 868 | size = res; |
| 869 | res = 0; |
Miklos Szeredi | 6ebe234 | 2002-01-06 21:44:16 +0000 | [diff] [blame] | 870 | if(f->flags & FUSE_DEBUG) { |
| 871 | printf(" READ %u bytes\n", size); |
| 872 | fflush(stdout); |
| 873 | } |
Miklos Szeredi | 5e18348 | 2001-10-31 14:52:35 +0000 | [diff] [blame] | 874 | } |
Miklos Szeredi | 0f48a26 | 2002-12-05 14:23:01 +0000 | [diff] [blame] | 875 | memset(out, 0, sizeof(struct fuse_out_header)); |
Miklos Szeredi | 4369643 | 2001-11-18 19:15:05 +0000 | [diff] [blame] | 876 | out->unique = in->unique; |
| 877 | out->error = res; |
| 878 | outsize = sizeof(struct fuse_out_header) + size; |
| 879 | |
| 880 | send_reply_raw(f, outbuf, outsize); |
| 881 | free(outbuf); |
Miklos Szeredi | 5e18348 | 2001-10-31 14:52:35 +0000 | [diff] [blame] | 882 | } |
Miklos Szeredi | b483c93 | 2001-10-29 14:57:57 +0000 | [diff] [blame] | 883 | |
Miklos Szeredi | a181e61 | 2001-11-06 12:03:23 +0000 | [diff] [blame] | 884 | static void do_write(struct fuse *f, struct fuse_in_header *in, |
| 885 | struct fuse_write_in *arg) |
| 886 | { |
| 887 | int res; |
| 888 | char *path; |
Miklos Szeredi | a181e61 | 2001-11-06 12:03:23 +0000 | [diff] [blame] | 889 | |
Miklos Szeredi | 97c61e9 | 2001-11-07 12:09:43 +0000 | [diff] [blame] | 890 | res = -ENOENT; |
Miklos Szeredi | a181e61 | 2001-11-06 12:03:23 +0000 | [diff] [blame] | 891 | path = get_path(f, in->ino); |
| 892 | if(path != NULL) { |
Miklos Szeredi | 6ebe234 | 2002-01-06 21:44:16 +0000 | [diff] [blame] | 893 | if(f->flags & FUSE_DEBUG) { |
| 894 | printf("WRITE %u bytes to %llu\n", arg->size, arg->offset); |
| 895 | fflush(stdout); |
| 896 | } |
| 897 | |
Miklos Szeredi | a181e61 | 2001-11-06 12:03:23 +0000 | [diff] [blame] | 898 | res = -ENOSYS; |
| 899 | if(f->op.write) |
Miklos Szeredi | 6bf8b68 | 2002-10-28 08:49:39 +0000 | [diff] [blame] | 900 | res = f->op.write(path, PARAM(arg), arg->size, arg->offset); |
Miklos Szeredi | 97c61e9 | 2001-11-07 12:09:43 +0000 | [diff] [blame] | 901 | free(path); |
Miklos Szeredi | a181e61 | 2001-11-06 12:03:23 +0000 | [diff] [blame] | 902 | } |
| 903 | |
| 904 | if(res > 0) { |
| 905 | if((size_t) res != arg->size) { |
| 906 | fprintf(stderr, "short write: %u (should be %u)\n", res, |
| 907 | arg->size); |
Miklos Szeredi | 0e53508 | 2003-10-13 10:08:06 +0000 | [diff] [blame] | 908 | res = -EINVAL; |
Miklos Szeredi | a181e61 | 2001-11-06 12:03:23 +0000 | [diff] [blame] | 909 | } |
| 910 | else |
| 911 | res = 0; |
| 912 | } |
| 913 | |
| 914 | send_reply(f, in, res, NULL, 0); |
| 915 | } |
| 916 | |
Miklos Szeredi | 18e75e4 | 2004-02-19 14:23:27 +0000 | [diff] [blame] | 917 | static void convert_statfs(struct statfs *statfs, struct fuse_kstatfs *kstatfs) |
| 918 | { |
| 919 | kstatfs->bsize = statfs->f_bsize; |
| 920 | kstatfs->blocks = statfs->f_blocks; |
| 921 | kstatfs->bfree = statfs->f_bfree; |
| 922 | kstatfs->bavail = statfs->f_bavail; |
| 923 | kstatfs->files = statfs->f_files; |
| 924 | kstatfs->ffree = statfs->f_ffree; |
| 925 | kstatfs->namelen = statfs->f_namelen; |
| 926 | } |
| 927 | |
Mark Glines | d84b39a | 2002-01-07 16:32:02 +0000 | [diff] [blame] | 928 | static void do_statfs(struct fuse *f, struct fuse_in_header *in) |
| 929 | { |
| 930 | int res; |
Mark Glines | d84b39a | 2002-01-07 16:32:02 +0000 | [diff] [blame] | 931 | struct fuse_statfs_out arg; |
Miklos Szeredi | 18e75e4 | 2004-02-19 14:23:27 +0000 | [diff] [blame] | 932 | struct statfs buf; |
Mark Glines | d84b39a | 2002-01-07 16:32:02 +0000 | [diff] [blame] | 933 | |
| 934 | res = -ENOSYS; |
Miklos Szeredi | 0f48a26 | 2002-12-05 14:23:01 +0000 | [diff] [blame] | 935 | if(f->op.statfs) { |
Miklos Szeredi | 18e75e4 | 2004-02-19 14:23:27 +0000 | [diff] [blame] | 936 | res = f->op.statfs("/", &buf); |
| 937 | if(res == 0) { |
| 938 | memset(&arg, 0, sizeof(struct fuse_statfs_out)); |
| 939 | convert_statfs(&buf, &arg.st); |
| 940 | } |
Miklos Szeredi | 0f48a26 | 2002-12-05 14:23:01 +0000 | [diff] [blame] | 941 | } |
Miklos Szeredi | 4b2bef4 | 2002-01-09 12:23:27 +0000 | [diff] [blame] | 942 | |
Mark Glines | d84b39a | 2002-01-07 16:32:02 +0000 | [diff] [blame] | 943 | send_reply(f, in, res, &arg, sizeof(arg)); |
| 944 | } |
| 945 | |
Miklos Szeredi | 5e43f2c | 2003-12-12 14:06:41 +0000 | [diff] [blame] | 946 | static void do_fsync(struct fuse *f, struct fuse_in_header *in, |
| 947 | struct fuse_fsync_in *inarg) |
| 948 | { |
| 949 | int res; |
| 950 | char *path; |
| 951 | |
| 952 | res = -ENOENT; |
| 953 | path = get_path(f, in->ino); |
| 954 | if(path != NULL) { |
| 955 | /* fsync is not mandatory, so don't return ENOSYS */ |
| 956 | res = 0; |
| 957 | if(f->op.fsync) |
| 958 | res = f->op.fsync(path, inarg->datasync); |
| 959 | free(path); |
| 960 | } |
| 961 | send_reply(f, in, res, NULL, 0); |
| 962 | } |
| 963 | |
Miklos Szeredi | 4369643 | 2001-11-18 19:15:05 +0000 | [diff] [blame] | 964 | static void free_cmd(struct fuse_cmd *cmd) |
| 965 | { |
| 966 | free(cmd->buf); |
| 967 | free(cmd); |
| 968 | } |
| 969 | |
Miklos Szeredi | fff56ab | 2001-11-16 10:12:59 +0000 | [diff] [blame] | 970 | void __fuse_process_cmd(struct fuse *f, struct fuse_cmd *cmd) |
Miklos Szeredi | a181e61 | 2001-11-06 12:03:23 +0000 | [diff] [blame] | 971 | { |
Miklos Szeredi | a181e61 | 2001-11-06 12:03:23 +0000 | [diff] [blame] | 972 | struct fuse_in_header *in = (struct fuse_in_header *) cmd->buf; |
| 973 | void *inarg = cmd->buf + sizeof(struct fuse_in_header); |
| 974 | size_t argsize; |
Miklos Szeredi | fe25def | 2001-12-20 15:38:05 +0000 | [diff] [blame] | 975 | struct fuse_context *ctx = fuse_get_context(f); |
Miklos Szeredi | a181e61 | 2001-11-06 12:03:23 +0000 | [diff] [blame] | 976 | |
Miklos Szeredi | 99ddf0e | 2001-11-25 17:19:59 +0000 | [diff] [blame] | 977 | dec_avail(f); |
Miklos Szeredi | 3323203 | 2001-11-19 17:55:51 +0000 | [diff] [blame] | 978 | |
Miklos Szeredi | c0938ea | 2001-11-07 12:35:06 +0000 | [diff] [blame] | 979 | if((f->flags & FUSE_DEBUG)) { |
Miklos Szeredi | c8ba237 | 2002-12-10 12:26:00 +0000 | [diff] [blame] | 980 | printf("unique: %i, opcode: %s (%i), ino: %li, insize: %i\n", |
| 981 | in->unique, opname(in->opcode), in->opcode, in->ino, |
| 982 | cmd->buflen); |
Miklos Szeredi | c0938ea | 2001-11-07 12:35:06 +0000 | [diff] [blame] | 983 | fflush(stdout); |
| 984 | } |
Miklos Szeredi | fe25def | 2001-12-20 15:38:05 +0000 | [diff] [blame] | 985 | |
| 986 | ctx->uid = in->uid; |
| 987 | ctx->gid = in->gid; |
Miklos Szeredi | a181e61 | 2001-11-06 12:03:23 +0000 | [diff] [blame] | 988 | |
| 989 | argsize = cmd->buflen - sizeof(struct fuse_in_header); |
| 990 | |
| 991 | switch(in->opcode) { |
| 992 | case FUSE_LOOKUP: |
| 993 | do_lookup(f, in, (char *) inarg); |
| 994 | break; |
| 995 | |
Miklos Szeredi | a181e61 | 2001-11-06 12:03:23 +0000 | [diff] [blame] | 996 | case FUSE_GETATTR: |
| 997 | do_getattr(f, in); |
| 998 | break; |
| 999 | |
| 1000 | case FUSE_SETATTR: |
| 1001 | do_setattr(f, in, (struct fuse_setattr_in *) inarg); |
| 1002 | break; |
| 1003 | |
| 1004 | case FUSE_READLINK: |
| 1005 | do_readlink(f, in); |
| 1006 | break; |
| 1007 | |
| 1008 | case FUSE_GETDIR: |
| 1009 | do_getdir(f, in); |
| 1010 | break; |
| 1011 | |
| 1012 | case FUSE_MKNOD: |
| 1013 | do_mknod(f, in, (struct fuse_mknod_in *) inarg); |
| 1014 | break; |
| 1015 | |
| 1016 | case FUSE_MKDIR: |
| 1017 | do_mkdir(f, in, (struct fuse_mkdir_in *) inarg); |
| 1018 | break; |
| 1019 | |
| 1020 | case FUSE_UNLINK: |
Miklos Szeredi | b595861 | 2004-02-20 14:10:49 +0000 | [diff] [blame] | 1021 | do_unlink(f, in, (char *) inarg); |
| 1022 | break; |
| 1023 | |
Miklos Szeredi | a181e61 | 2001-11-06 12:03:23 +0000 | [diff] [blame] | 1024 | case FUSE_RMDIR: |
Miklos Szeredi | b595861 | 2004-02-20 14:10:49 +0000 | [diff] [blame] | 1025 | do_rmdir(f, in, (char *) inarg); |
Miklos Szeredi | a181e61 | 2001-11-06 12:03:23 +0000 | [diff] [blame] | 1026 | break; |
| 1027 | |
| 1028 | case FUSE_SYMLINK: |
| 1029 | do_symlink(f, in, (char *) inarg, |
| 1030 | ((char *) inarg) + strlen((char *) inarg) + 1); |
| 1031 | break; |
| 1032 | |
| 1033 | case FUSE_RENAME: |
| 1034 | do_rename(f, in, (struct fuse_rename_in *) inarg); |
| 1035 | break; |
| 1036 | |
| 1037 | case FUSE_LINK: |
| 1038 | do_link(f, in, (struct fuse_link_in *) inarg); |
| 1039 | break; |
| 1040 | |
| 1041 | case FUSE_OPEN: |
| 1042 | do_open(f, in, (struct fuse_open_in *) inarg); |
| 1043 | break; |
| 1044 | |
Miklos Szeredi | 9478e86 | 2002-12-11 09:50:26 +0000 | [diff] [blame] | 1045 | case FUSE_RELEASE: |
| 1046 | do_release(f, in, (struct fuse_open_in *) inarg); |
| 1047 | break; |
| 1048 | |
Miklos Szeredi | a181e61 | 2001-11-06 12:03:23 +0000 | [diff] [blame] | 1049 | case FUSE_READ: |
| 1050 | do_read(f, in, (struct fuse_read_in *) inarg); |
| 1051 | break; |
| 1052 | |
| 1053 | case FUSE_WRITE: |
| 1054 | do_write(f, in, (struct fuse_write_in *) inarg); |
| 1055 | break; |
| 1056 | |
Mark Glines | d84b39a | 2002-01-07 16:32:02 +0000 | [diff] [blame] | 1057 | case FUSE_STATFS: |
| 1058 | do_statfs(f, in); |
| 1059 | break; |
| 1060 | |
Miklos Szeredi | 5e43f2c | 2003-12-12 14:06:41 +0000 | [diff] [blame] | 1061 | case FUSE_FSYNC: |
| 1062 | do_fsync(f, in, (struct fuse_fsync_in *) inarg); |
| 1063 | break; |
| 1064 | |
Miklos Szeredi | a181e61 | 2001-11-06 12:03:23 +0000 | [diff] [blame] | 1065 | default: |
Miklos Szeredi | 4369643 | 2001-11-18 19:15:05 +0000 | [diff] [blame] | 1066 | send_reply(f, in, -ENOSYS, NULL, 0); |
Miklos Szeredi | a181e61 | 2001-11-06 12:03:23 +0000 | [diff] [blame] | 1067 | } |
Miklos Szeredi | 4369643 | 2001-11-18 19:15:05 +0000 | [diff] [blame] | 1068 | |
| 1069 | free_cmd(cmd); |
Miklos Szeredi | a181e61 | 2001-11-06 12:03:23 +0000 | [diff] [blame] | 1070 | } |
| 1071 | |
Miklos Szeredi | fff56ab | 2001-11-16 10:12:59 +0000 | [diff] [blame] | 1072 | struct fuse_cmd *__fuse_read_cmd(struct fuse *f) |
Miklos Szeredi | 2df1c04 | 2001-11-06 15:07:17 +0000 | [diff] [blame] | 1073 | { |
Miklos Szeredi | fff56ab | 2001-11-16 10:12:59 +0000 | [diff] [blame] | 1074 | ssize_t res; |
Miklos Szeredi | fff56ab | 2001-11-16 10:12:59 +0000 | [diff] [blame] | 1075 | struct fuse_cmd *cmd; |
Miklos Szeredi | 99ddf0e | 2001-11-25 17:19:59 +0000 | [diff] [blame] | 1076 | struct fuse_in_header *in; |
| 1077 | void *inarg; |
Miklos Szeredi | fff56ab | 2001-11-16 10:12:59 +0000 | [diff] [blame] | 1078 | |
Miklos Szeredi | 4369643 | 2001-11-18 19:15:05 +0000 | [diff] [blame] | 1079 | cmd = (struct fuse_cmd *) malloc(sizeof(struct fuse_cmd)); |
| 1080 | cmd->buf = (char *) malloc(FUSE_MAX_IN); |
Miklos Szeredi | 99ddf0e | 2001-11-25 17:19:59 +0000 | [diff] [blame] | 1081 | in = (struct fuse_in_header *) cmd->buf; |
| 1082 | inarg = cmd->buf + sizeof(struct fuse_in_header); |
Miklos Szeredi | 4369643 | 2001-11-18 19:15:05 +0000 | [diff] [blame] | 1083 | |
Miklos Szeredi | 99ddf0e | 2001-11-25 17:19:59 +0000 | [diff] [blame] | 1084 | do { |
| 1085 | res = read(f->fd, cmd->buf, FUSE_MAX_IN); |
| 1086 | if(res == -1) { |
Miklos Szeredi | 0f48a26 | 2002-12-05 14:23:01 +0000 | [diff] [blame] | 1087 | free_cmd(cmd); |
Miklos Szeredi | 307242f | 2004-01-26 11:28:44 +0000 | [diff] [blame] | 1088 | if(f->exited || errno == EINTR) |
Miklos Szeredi | 0f48a26 | 2002-12-05 14:23:01 +0000 | [diff] [blame] | 1089 | return NULL; |
| 1090 | |
Miklos Szeredi | 99ddf0e | 2001-11-25 17:19:59 +0000 | [diff] [blame] | 1091 | /* ENODEV means we got unmounted, so we silenty return failure */ |
| 1092 | if(errno != ENODEV) { |
Miklos Szeredi | 99ddf0e | 2001-11-25 17:19:59 +0000 | [diff] [blame] | 1093 | /* BAD... This will happen again */ |
Miklos Szeredi | 0f48a26 | 2002-12-05 14:23:01 +0000 | [diff] [blame] | 1094 | perror("fuse: reading device"); |
Miklos Szeredi | 99ddf0e | 2001-11-25 17:19:59 +0000 | [diff] [blame] | 1095 | } |
Miklos Szeredi | 0f48a26 | 2002-12-05 14:23:01 +0000 | [diff] [blame] | 1096 | |
| 1097 | fuse_exit(f); |
Miklos Szeredi | 99ddf0e | 2001-11-25 17:19:59 +0000 | [diff] [blame] | 1098 | return NULL; |
Miklos Szeredi | 9624998 | 2001-11-21 12:21:19 +0000 | [diff] [blame] | 1099 | } |
Miklos Szeredi | 99ddf0e | 2001-11-25 17:19:59 +0000 | [diff] [blame] | 1100 | if((size_t) res < sizeof(struct fuse_in_header)) { |
Miklos Szeredi | 99ddf0e | 2001-11-25 17:19:59 +0000 | [diff] [blame] | 1101 | free_cmd(cmd); |
Miklos Szeredi | 0f48a26 | 2002-12-05 14:23:01 +0000 | [diff] [blame] | 1102 | /* Cannot happen */ |
| 1103 | fprintf(stderr, "short read on fuse device\n"); |
| 1104 | fuse_exit(f); |
Miklos Szeredi | 99ddf0e | 2001-11-25 17:19:59 +0000 | [diff] [blame] | 1105 | return NULL; |
| 1106 | } |
| 1107 | cmd->buflen = res; |
| 1108 | |
| 1109 | /* Forget is special, it can be done without messing with threads. */ |
| 1110 | if(in->opcode == FUSE_FORGET) |
| 1111 | do_forget(f, in, (struct fuse_forget_in *) inarg); |
| 1112 | |
| 1113 | } while(in->opcode == FUSE_FORGET); |
| 1114 | |
Miklos Szeredi | fff56ab | 2001-11-16 10:12:59 +0000 | [diff] [blame] | 1115 | return cmd; |
Miklos Szeredi | 2df1c04 | 2001-11-06 15:07:17 +0000 | [diff] [blame] | 1116 | } |
| 1117 | |
Miklos Szeredi | 85c74fc | 2001-10-28 19:44:14 +0000 | [diff] [blame] | 1118 | void fuse_loop(struct fuse *f) |
| 1119 | { |
Miklos Szeredi | c40748a | 2004-02-20 16:38:45 +0000 | [diff] [blame] | 1120 | if(f == NULL) |
| 1121 | return; |
| 1122 | |
Miklos Szeredi | 85c74fc | 2001-10-28 19:44:14 +0000 | [diff] [blame] | 1123 | while(1) { |
Miklos Szeredi | 0f48a26 | 2002-12-05 14:23:01 +0000 | [diff] [blame] | 1124 | struct fuse_cmd *cmd; |
| 1125 | |
| 1126 | if(f->exited) |
| 1127 | return; |
| 1128 | |
| 1129 | cmd = __fuse_read_cmd(f); |
Miklos Szeredi | fff56ab | 2001-11-16 10:12:59 +0000 | [diff] [blame] | 1130 | if(cmd == NULL) |
Miklos Szeredi | 0f48a26 | 2002-12-05 14:23:01 +0000 | [diff] [blame] | 1131 | continue; |
Miklos Szeredi | 85c74fc | 2001-10-28 19:44:14 +0000 | [diff] [blame] | 1132 | |
Miklos Szeredi | fff56ab | 2001-11-16 10:12:59 +0000 | [diff] [blame] | 1133 | __fuse_process_cmd(f, cmd); |
Miklos Szeredi | 85c74fc | 2001-10-28 19:44:14 +0000 | [diff] [blame] | 1134 | } |
| 1135 | } |
| 1136 | |
Miklos Szeredi | 0f48a26 | 2002-12-05 14:23:01 +0000 | [diff] [blame] | 1137 | void fuse_exit(struct fuse *f) |
| 1138 | { |
| 1139 | f->exited = 1; |
| 1140 | } |
| 1141 | |
Miklos Szeredi | 2e50d43 | 2001-12-20 12:17:25 +0000 | [diff] [blame] | 1142 | struct fuse_context *fuse_get_context(struct fuse *f) |
| 1143 | { |
| 1144 | if(f->getcontext) |
| 1145 | return f->getcontext(f); |
| 1146 | else |
| 1147 | return &f->context; |
| 1148 | } |
| 1149 | |
Miklos Szeredi | c40748a | 2004-02-20 16:38:45 +0000 | [diff] [blame] | 1150 | static int check_version(struct fuse *f) |
| 1151 | { |
| 1152 | int res; |
| 1153 | FILE *vf = fopen(FUSE_VERSION_FILE, "r"); |
| 1154 | if(vf == NULL) { |
| 1155 | fprintf(stderr, "fuse: kernel interface too old, need >= %i.%i\n", |
| 1156 | FUSE_KERNEL_VERSION, FUSE_KERNEL_MINOR_VERSION); |
| 1157 | return -1; |
| 1158 | } |
| 1159 | res = fscanf(vf, "%i.%i", &f->majorver, &f->minorver); |
| 1160 | fclose(vf); |
| 1161 | if(res != 2) { |
| 1162 | fprintf(stderr, "fuse: error reading %s\n", FUSE_VERSION_FILE); |
| 1163 | return -1; |
| 1164 | } |
| 1165 | if(f->majorver != FUSE_KERNEL_VERSION) { |
| 1166 | fprintf(stderr, "fuse: bad kernel interface major version: needs %i\n", |
| 1167 | FUSE_KERNEL_VERSION); |
| 1168 | return -1; |
| 1169 | } |
| 1170 | if(f->minorver < FUSE_KERNEL_MINOR_VERSION) { |
| 1171 | fprintf(stderr, "fuse: kernel interface too old: need >= %i.%i", |
| 1172 | FUSE_KERNEL_VERSION, FUSE_KERNEL_MINOR_VERSION); |
| 1173 | return -1; |
| 1174 | } |
| 1175 | |
| 1176 | return 0; |
| 1177 | } |
| 1178 | |
Miklos Szeredi | 2e50d43 | 2001-12-20 12:17:25 +0000 | [diff] [blame] | 1179 | struct fuse *fuse_new(int fd, int flags, const struct fuse_operations *op) |
Miklos Szeredi | 85c74fc | 2001-10-28 19:44:14 +0000 | [diff] [blame] | 1180 | { |
Miklos Szeredi | 97c61e9 | 2001-11-07 12:09:43 +0000 | [diff] [blame] | 1181 | struct fuse *f; |
| 1182 | struct node *root; |
Miklos Szeredi | 85c74fc | 2001-10-28 19:44:14 +0000 | [diff] [blame] | 1183 | |
Miklos Szeredi | 97c61e9 | 2001-11-07 12:09:43 +0000 | [diff] [blame] | 1184 | f = (struct fuse *) calloc(1, sizeof(struct fuse)); |
Miklos Szeredi | 2df1c04 | 2001-11-06 15:07:17 +0000 | [diff] [blame] | 1185 | |
Miklos Szeredi | c40748a | 2004-02-20 16:38:45 +0000 | [diff] [blame] | 1186 | if(check_version(f) == -1) { |
| 1187 | free(f); |
| 1188 | return NULL; |
| 1189 | } |
| 1190 | |
Miklos Szeredi | a181e61 | 2001-11-06 12:03:23 +0000 | [diff] [blame] | 1191 | f->flags = flags; |
Miklos Szeredi | 8cffdb9 | 2001-11-09 14:49:18 +0000 | [diff] [blame] | 1192 | f->fd = fd; |
Miklos Szeredi | 97c61e9 | 2001-11-07 12:09:43 +0000 | [diff] [blame] | 1193 | f->ctr = 0; |
Miklos Szeredi | 76f6578 | 2004-02-19 16:55:40 +0000 | [diff] [blame] | 1194 | f->generation = 0; |
Miklos Szeredi | fff56ab | 2001-11-16 10:12:59 +0000 | [diff] [blame] | 1195 | /* FIXME: Dynamic hash table */ |
Miklos Szeredi | 97c61e9 | 2001-11-07 12:09:43 +0000 | [diff] [blame] | 1196 | f->name_table_size = 14057; |
| 1197 | f->name_table = (struct node **) |
| 1198 | calloc(1, sizeof(struct node *) * f->name_table_size); |
| 1199 | f->ino_table_size = 14057; |
| 1200 | f->ino_table = (struct node **) |
| 1201 | calloc(1, sizeof(struct node *) * f->ino_table_size); |
Miklos Szeredi | a181e61 | 2001-11-06 12:03:23 +0000 | [diff] [blame] | 1202 | pthread_mutex_init(&f->lock, NULL); |
Miklos Szeredi | 3323203 | 2001-11-19 17:55:51 +0000 | [diff] [blame] | 1203 | f->numworker = 0; |
| 1204 | f->numavail = 0; |
Miklos Szeredi | 2e50d43 | 2001-12-20 12:17:25 +0000 | [diff] [blame] | 1205 | f->op = *op; |
| 1206 | f->getcontext = NULL; |
| 1207 | f->context.uid = 0; |
| 1208 | f->context.gid = 0; |
Miklos Szeredi | 0f48a26 | 2002-12-05 14:23:01 +0000 | [diff] [blame] | 1209 | f->exited = 0; |
Miklos Szeredi | 85c74fc | 2001-10-28 19:44:14 +0000 | [diff] [blame] | 1210 | |
Miklos Szeredi | 97c61e9 | 2001-11-07 12:09:43 +0000 | [diff] [blame] | 1211 | root = (struct node *) calloc(1, sizeof(struct node)); |
Miklos Szeredi | 8cffdb9 | 2001-11-09 14:49:18 +0000 | [diff] [blame] | 1212 | root->mode = 0; |
Miklos Szeredi | 97c61e9 | 2001-11-07 12:09:43 +0000 | [diff] [blame] | 1213 | root->rdev = 0; |
| 1214 | root->name = strdup("/"); |
| 1215 | root->parent = 0; |
Miklos Szeredi | 76f6578 | 2004-02-19 16:55:40 +0000 | [diff] [blame] | 1216 | root->ino = FUSE_ROOT_INO; |
| 1217 | root->generation = 0; |
| 1218 | hash_ino(f, root); |
Miklos Szeredi | 97c61e9 | 2001-11-07 12:09:43 +0000 | [diff] [blame] | 1219 | |
Miklos Szeredi | 85c74fc | 2001-10-28 19:44:14 +0000 | [diff] [blame] | 1220 | return f; |
| 1221 | } |
| 1222 | |
Miklos Szeredi | 85c74fc | 2001-10-28 19:44:14 +0000 | [diff] [blame] | 1223 | void fuse_destroy(struct fuse *f) |
| 1224 | { |
Miklos Szeredi | 97c61e9 | 2001-11-07 12:09:43 +0000 | [diff] [blame] | 1225 | size_t i; |
Miklos Szeredi | 97c61e9 | 2001-11-07 12:09:43 +0000 | [diff] [blame] | 1226 | for(i = 0; i < f->ino_table_size; i++) { |
| 1227 | struct node *node; |
| 1228 | struct node *next; |
| 1229 | for(node = f->ino_table[i]; node != NULL; node = next) { |
| 1230 | next = node->ino_next; |
| 1231 | free_node(node); |
| 1232 | } |
| 1233 | } |
| 1234 | free(f->ino_table); |
| 1235 | free(f->name_table); |
Miklos Szeredi | a181e61 | 2001-11-06 12:03:23 +0000 | [diff] [blame] | 1236 | pthread_mutex_destroy(&f->lock); |
Miklos Szeredi | 97c61e9 | 2001-11-07 12:09:43 +0000 | [diff] [blame] | 1237 | free(f); |
Miklos Szeredi | 85c74fc | 2001-10-28 19:44:14 +0000 | [diff] [blame] | 1238 | } |