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 | 99ddf0e | 2001-11-25 17:19:59 +0000 | [diff] [blame] | 22 | static inline void inc_avail(struct fuse *f) |
| 23 | { |
| 24 | pthread_mutex_lock(&f->lock); |
| 25 | f->numavail ++; |
| 26 | pthread_mutex_unlock(&f->lock); |
| 27 | } |
| 28 | |
| 29 | static inline void dec_avail(struct fuse *f) |
| 30 | { |
| 31 | pthread_mutex_lock(&f->lock); |
| 32 | f->numavail --; |
| 33 | pthread_mutex_unlock(&f->lock); |
| 34 | } |
| 35 | |
Miklos Szeredi | 97c61e9 | 2001-11-07 12:09:43 +0000 | [diff] [blame] | 36 | static struct node *__get_node(struct fuse *f, fino_t ino) |
Miklos Szeredi | a181e61 | 2001-11-06 12:03:23 +0000 | [diff] [blame] | 37 | { |
Miklos Szeredi | 97c61e9 | 2001-11-07 12:09:43 +0000 | [diff] [blame] | 38 | size_t hash = ino % f->ino_table_size; |
| 39 | struct node *node; |
| 40 | |
| 41 | for(node = f->ino_table[hash]; node != NULL; node = node->ino_next) |
| 42 | if(node->ino == ino) |
| 43 | return node; |
| 44 | |
| 45 | return NULL; |
Miklos Szeredi | a181e61 | 2001-11-06 12:03:23 +0000 | [diff] [blame] | 46 | } |
| 47 | |
Miklos Szeredi | 97c61e9 | 2001-11-07 12:09:43 +0000 | [diff] [blame] | 48 | static struct node *get_node(struct fuse *f, fino_t ino) |
Miklos Szeredi | a181e61 | 2001-11-06 12:03:23 +0000 | [diff] [blame] | 49 | { |
Miklos Szeredi | 97c61e9 | 2001-11-07 12:09:43 +0000 | [diff] [blame] | 50 | struct node *node = __get_node(f, ino); |
| 51 | if(node != NULL) |
| 52 | return node; |
| 53 | |
| 54 | fprintf(stderr, "fuse internal error: inode %lu not found\n", ino); |
| 55 | abort(); |
Miklos Szeredi | a181e61 | 2001-11-06 12:03:23 +0000 | [diff] [blame] | 56 | } |
| 57 | |
Miklos Szeredi | 97c61e9 | 2001-11-07 12:09:43 +0000 | [diff] [blame] | 58 | static void hash_ino(struct fuse *f, struct node *node, fino_t ino) |
Miklos Szeredi | 85c74fc | 2001-10-28 19:44:14 +0000 | [diff] [blame] | 59 | { |
Miklos Szeredi | 97c61e9 | 2001-11-07 12:09:43 +0000 | [diff] [blame] | 60 | size_t hash = ino % f->ino_table_size; |
| 61 | node->ino = ino; |
| 62 | |
| 63 | node->ino_next = f->ino_table[hash]; |
| 64 | f->ino_table[hash] = node; |
Miklos Szeredi | 85c74fc | 2001-10-28 19:44:14 +0000 | [diff] [blame] | 65 | } |
| 66 | |
Miklos Szeredi | 97c61e9 | 2001-11-07 12:09:43 +0000 | [diff] [blame] | 67 | static void unhash_ino(struct fuse *f, struct node *node) |
Miklos Szeredi | 85c74fc | 2001-10-28 19:44:14 +0000 | [diff] [blame] | 68 | { |
Miklos Szeredi | 97c61e9 | 2001-11-07 12:09:43 +0000 | [diff] [blame] | 69 | size_t hash = node->ino % f->ino_table_size; |
| 70 | struct node **nodep = &f->ino_table[hash]; |
| 71 | |
| 72 | for(; *nodep != NULL; nodep = &(*nodep)->ino_next) |
| 73 | if(*nodep == node) { |
| 74 | *nodep = node->ino_next; |
| 75 | return; |
| 76 | } |
Miklos Szeredi | 85c74fc | 2001-10-28 19:44:14 +0000 | [diff] [blame] | 77 | } |
| 78 | |
Miklos Szeredi | 97c61e9 | 2001-11-07 12:09:43 +0000 | [diff] [blame] | 79 | static fino_t get_ino(struct node *node) |
Miklos Szeredi | 85c74fc | 2001-10-28 19:44:14 +0000 | [diff] [blame] | 80 | { |
Miklos Szeredi | 97c61e9 | 2001-11-07 12:09:43 +0000 | [diff] [blame] | 81 | return node->ino; |
| 82 | } |
| 83 | |
| 84 | static fino_t next_ino(struct fuse *f) |
| 85 | { |
| 86 | while(f->ctr == 0 || __get_node(f, f->ctr) != NULL) |
| 87 | f->ctr++; |
| 88 | |
| 89 | return f->ctr; |
| 90 | } |
| 91 | |
| 92 | static void free_node(struct node *node) |
| 93 | { |
| 94 | free(node->name); |
| 95 | free(node); |
| 96 | } |
| 97 | |
| 98 | static unsigned int name_hash(struct fuse *f, fino_t parent, const char *name) |
| 99 | { |
| 100 | unsigned int hash = *name; |
| 101 | |
| 102 | if(hash) |
| 103 | for(name += 1; *name != '\0'; name++) |
| 104 | hash = (hash << 5) - hash + *name; |
| 105 | |
| 106 | return (hash + parent) % f->name_table_size; |
Miklos Szeredi | 85c74fc | 2001-10-28 19:44:14 +0000 | [diff] [blame] | 107 | } |
| 108 | |
Miklos Szeredi | 19dff1b | 2001-10-30 15:06:52 +0000 | [diff] [blame] | 109 | static struct node *lookup_node(struct fuse *f, fino_t parent, |
| 110 | const char *name) |
| 111 | { |
Miklos Szeredi | 97c61e9 | 2001-11-07 12:09:43 +0000 | [diff] [blame] | 112 | size_t hash = name_hash(f, parent, name); |
| 113 | struct node *node; |
Miklos Szeredi | 19dff1b | 2001-10-30 15:06:52 +0000 | [diff] [blame] | 114 | |
Miklos Szeredi | 97c61e9 | 2001-11-07 12:09:43 +0000 | [diff] [blame] | 115 | for(node = f->name_table[hash]; node != NULL; node = node->name_next) |
| 116 | if(node->parent == parent && strcmp(node->name, name) == 0) |
| 117 | return node; |
Miklos Szeredi | 19dff1b | 2001-10-30 15:06:52 +0000 | [diff] [blame] | 118 | |
Miklos Szeredi | 97c61e9 | 2001-11-07 12:09:43 +0000 | [diff] [blame] | 119 | return NULL; |
Miklos Szeredi | 19dff1b | 2001-10-30 15:06:52 +0000 | [diff] [blame] | 120 | } |
| 121 | |
Miklos Szeredi | 97c61e9 | 2001-11-07 12:09:43 +0000 | [diff] [blame] | 122 | 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] | 123 | const char *name) |
Miklos Szeredi | 5e18348 | 2001-10-31 14:52:35 +0000 | [diff] [blame] | 124 | { |
Miklos Szeredi | 97c61e9 | 2001-11-07 12:09:43 +0000 | [diff] [blame] | 125 | size_t hash = name_hash(f, parent, name); |
Miklos Szeredi | a181e61 | 2001-11-06 12:03:23 +0000 | [diff] [blame] | 126 | node->parent = parent; |
Miklos Szeredi | 97c61e9 | 2001-11-07 12:09:43 +0000 | [diff] [blame] | 127 | node->name = strdup(name); |
| 128 | node->name_next = f->name_table[hash]; |
| 129 | f->name_table[hash] = node; |
Miklos Szeredi | 5e18348 | 2001-10-31 14:52:35 +0000 | [diff] [blame] | 130 | } |
| 131 | |
Miklos Szeredi | 97c61e9 | 2001-11-07 12:09:43 +0000 | [diff] [blame] | 132 | static void unhash_name(struct fuse *f, struct node *node) |
Miklos Szeredi | a181e61 | 2001-11-06 12:03:23 +0000 | [diff] [blame] | 133 | { |
| 134 | if(node->name != NULL) { |
Miklos Szeredi | 97c61e9 | 2001-11-07 12:09:43 +0000 | [diff] [blame] | 135 | size_t hash = name_hash(f, node->parent, node->name); |
| 136 | struct node **nodep = &f->name_table[hash]; |
| 137 | |
| 138 | for(; *nodep != NULL; nodep = &(*nodep)->name_next) |
| 139 | if(*nodep == node) { |
| 140 | *nodep = node->name_next; |
| 141 | node->name_next = NULL; |
| 142 | free(node->name); |
| 143 | node->name = NULL; |
| 144 | node->parent = 0; |
| 145 | return; |
| 146 | } |
| 147 | fprintf(stderr, "fuse internal error: unable to unhash node: %lu\n", |
| 148 | node->ino); |
| 149 | abort(); |
Miklos Szeredi | a181e61 | 2001-11-06 12:03:23 +0000 | [diff] [blame] | 150 | } |
| 151 | } |
| 152 | |
| 153 | static fino_t find_node(struct fuse *f, fino_t parent, char *name, |
| 154 | struct fuse_attr *attr, int version) |
Miklos Szeredi | 5e18348 | 2001-10-31 14:52:35 +0000 | [diff] [blame] | 155 | { |
| 156 | struct node *node; |
Miklos Szeredi | a181e61 | 2001-11-06 12:03:23 +0000 | [diff] [blame] | 157 | int mode = attr->mode & S_IFMT; |
| 158 | int rdev = 0; |
| 159 | |
| 160 | if(S_ISCHR(mode) || S_ISBLK(mode)) |
| 161 | rdev = attr->rdev; |
Miklos Szeredi | 5e18348 | 2001-10-31 14:52:35 +0000 | [diff] [blame] | 162 | |
Miklos Szeredi | a181e61 | 2001-11-06 12:03:23 +0000 | [diff] [blame] | 163 | pthread_mutex_lock(&f->lock); |
Miklos Szeredi | 5e18348 | 2001-10-31 14:52:35 +0000 | [diff] [blame] | 164 | node = lookup_node(f, parent, name); |
| 165 | if(node != NULL) { |
Miklos Szeredi | a181e61 | 2001-11-06 12:03:23 +0000 | [diff] [blame] | 166 | if(node->mode == mode && node->rdev == rdev) |
| 167 | goto out; |
| 168 | |
Miklos Szeredi | 97c61e9 | 2001-11-07 12:09:43 +0000 | [diff] [blame] | 169 | unhash_name(f, node); |
Miklos Szeredi | 5e18348 | 2001-10-31 14:52:35 +0000 | [diff] [blame] | 170 | } |
| 171 | |
Miklos Szeredi | 97c61e9 | 2001-11-07 12:09:43 +0000 | [diff] [blame] | 172 | node = (struct node *) calloc(1, sizeof(struct node)); |
Miklos Szeredi | a181e61 | 2001-11-06 12:03:23 +0000 | [diff] [blame] | 173 | node->mode = mode; |
Miklos Szeredi | 97c61e9 | 2001-11-07 12:09:43 +0000 | [diff] [blame] | 174 | node->rdev = rdev; |
| 175 | hash_ino(f, node, next_ino(f)); |
| 176 | hash_name(f, node, parent, name); |
Miklos Szeredi | a181e61 | 2001-11-06 12:03:23 +0000 | [diff] [blame] | 177 | |
| 178 | out: |
| 179 | node->version = version; |
| 180 | pthread_mutex_unlock(&f->lock); |
Miklos Szeredi | 5e18348 | 2001-10-31 14:52:35 +0000 | [diff] [blame] | 181 | return get_ino(node); |
| 182 | } |
| 183 | |
Miklos Szeredi | 97c61e9 | 2001-11-07 12:09:43 +0000 | [diff] [blame] | 184 | static char *add_name(char *buf, char *s, const char *name) |
Miklos Szeredi | 85c74fc | 2001-10-28 19:44:14 +0000 | [diff] [blame] | 185 | { |
Miklos Szeredi | 97c61e9 | 2001-11-07 12:09:43 +0000 | [diff] [blame] | 186 | size_t len = strlen(name); |
| 187 | s -= len; |
| 188 | if(s <= buf) { |
| 189 | fprintf(stderr, "fuse: path too long: ...%s\n", s + len); |
| 190 | return NULL; |
Miklos Szeredi | 85c74fc | 2001-10-28 19:44:14 +0000 | [diff] [blame] | 191 | } |
Miklos Szeredi | 97c61e9 | 2001-11-07 12:09:43 +0000 | [diff] [blame] | 192 | strncpy(s, name, len); |
| 193 | s--; |
| 194 | *s = '/'; |
Miklos Szeredi | 85c74fc | 2001-10-28 19:44:14 +0000 | [diff] [blame] | 195 | |
Miklos Szeredi | 97c61e9 | 2001-11-07 12:09:43 +0000 | [diff] [blame] | 196 | return s; |
Miklos Szeredi | 85c74fc | 2001-10-28 19:44:14 +0000 | [diff] [blame] | 197 | } |
| 198 | |
Miklos Szeredi | a181e61 | 2001-11-06 12:03:23 +0000 | [diff] [blame] | 199 | 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] | 200 | { |
Miklos Szeredi | 97c61e9 | 2001-11-07 12:09:43 +0000 | [diff] [blame] | 201 | char buf[FUSE_MAX_PATH]; |
| 202 | char *s = buf + FUSE_MAX_PATH - 1; |
| 203 | struct node *node; |
Miklos Szeredi | 5e18348 | 2001-10-31 14:52:35 +0000 | [diff] [blame] | 204 | |
Miklos Szeredi | 97c61e9 | 2001-11-07 12:09:43 +0000 | [diff] [blame] | 205 | *s = '\0'; |
Miklos Szeredi | a181e61 | 2001-11-06 12:03:23 +0000 | [diff] [blame] | 206 | |
Miklos Szeredi | 97c61e9 | 2001-11-07 12:09:43 +0000 | [diff] [blame] | 207 | if(name != NULL) { |
| 208 | s = add_name(buf, s, name); |
| 209 | if(s == NULL) |
| 210 | return NULL; |
| 211 | } |
| 212 | |
| 213 | pthread_mutex_lock(&f->lock); |
| 214 | for(node = get_node(f, ino); node->ino != FUSE_ROOT_INO; |
| 215 | node = get_node(f, node->parent)) { |
| 216 | if(node->name == NULL) { |
| 217 | s = NULL; |
| 218 | break; |
| 219 | } |
| 220 | |
| 221 | s = add_name(buf, s, node->name); |
| 222 | if(s == NULL) |
| 223 | break; |
| 224 | } |
| 225 | pthread_mutex_unlock(&f->lock); |
| 226 | |
| 227 | if(s == NULL) |
Miklos Szeredi | 5e18348 | 2001-10-31 14:52:35 +0000 | [diff] [blame] | 228 | return NULL; |
Miklos Szeredi | 97c61e9 | 2001-11-07 12:09:43 +0000 | [diff] [blame] | 229 | else if(*s == '\0') |
| 230 | return strdup("/"); |
| 231 | else |
| 232 | return strdup(s); |
| 233 | } |
Miklos Szeredi | a181e61 | 2001-11-06 12:03:23 +0000 | [diff] [blame] | 234 | |
Miklos Szeredi | 97c61e9 | 2001-11-07 12:09:43 +0000 | [diff] [blame] | 235 | static char *get_path(struct fuse *f, fino_t ino) |
| 236 | { |
| 237 | return get_path_name(f, ino, NULL); |
Miklos Szeredi | b483c93 | 2001-10-29 14:57:57 +0000 | [diff] [blame] | 238 | } |
| 239 | |
Miklos Szeredi | a181e61 | 2001-11-06 12:03:23 +0000 | [diff] [blame] | 240 | static void destroy_node(struct fuse *f, fino_t ino, int version) |
Miklos Szeredi | 85c74fc | 2001-10-28 19:44:14 +0000 | [diff] [blame] | 241 | { |
Miklos Szeredi | a181e61 | 2001-11-06 12:03:23 +0000 | [diff] [blame] | 242 | struct node *node; |
| 243 | |
| 244 | pthread_mutex_lock(&f->lock); |
Miklos Szeredi | 97c61e9 | 2001-11-07 12:09:43 +0000 | [diff] [blame] | 245 | node = get_node(f, ino); |
Miklos Szeredi | 39f2867 | 2001-11-14 14:52:54 +0000 | [diff] [blame] | 246 | if(node->version == version && ino != FUSE_ROOT_INO) { |
Miklos Szeredi | 97c61e9 | 2001-11-07 12:09:43 +0000 | [diff] [blame] | 247 | unhash_name(f, node); |
| 248 | unhash_ino(f, node); |
Miklos Szeredi | a181e61 | 2001-11-06 12:03:23 +0000 | [diff] [blame] | 249 | free_node(node); |
| 250 | } |
| 251 | pthread_mutex_unlock(&f->lock); |
| 252 | |
Miklos Szeredi | 85c74fc | 2001-10-28 19:44:14 +0000 | [diff] [blame] | 253 | } |
| 254 | |
Miklos Szeredi | 5e18348 | 2001-10-31 14:52:35 +0000 | [diff] [blame] | 255 | static void remove_node(struct fuse *f, fino_t dir, const char *name) |
| 256 | { |
Miklos Szeredi | a181e61 | 2001-11-06 12:03:23 +0000 | [diff] [blame] | 257 | struct node *node; |
| 258 | |
| 259 | pthread_mutex_lock(&f->lock); |
| 260 | node = lookup_node(f, dir, name); |
Miklos Szeredi | 97c61e9 | 2001-11-07 12:09:43 +0000 | [diff] [blame] | 261 | if(node == NULL) { |
| 262 | fprintf(stderr, "fuse internal error: unable to remove node %lu/%s\n", |
| 263 | dir, name); |
| 264 | abort(); |
| 265 | } |
| 266 | unhash_name(f, node); |
Miklos Szeredi | a181e61 | 2001-11-06 12:03:23 +0000 | [diff] [blame] | 267 | pthread_mutex_unlock(&f->lock); |
Miklos Szeredi | 5e18348 | 2001-10-31 14:52:35 +0000 | [diff] [blame] | 268 | } |
| 269 | |
Miklos Szeredi | 19dff1b | 2001-10-30 15:06:52 +0000 | [diff] [blame] | 270 | static void rename_node(struct fuse *f, fino_t olddir, const char *oldname, |
| 271 | fino_t newdir, const char *newname) |
| 272 | { |
Miklos Szeredi | a181e61 | 2001-11-06 12:03:23 +0000 | [diff] [blame] | 273 | struct node *node; |
| 274 | struct node *newnode; |
| 275 | |
| 276 | pthread_mutex_lock(&f->lock); |
| 277 | node = lookup_node(f, olddir, oldname); |
| 278 | newnode = lookup_node(f, newdir, newname); |
Miklos Szeredi | 97c61e9 | 2001-11-07 12:09:43 +0000 | [diff] [blame] | 279 | if(node == NULL) { |
| 280 | fprintf(stderr, "fuse internal error: unable to rename node %lu/%s\n", |
| 281 | olddir, oldname); |
| 282 | abort(); |
| 283 | } |
Miklos Szeredi | 19dff1b | 2001-10-30 15:06:52 +0000 | [diff] [blame] | 284 | |
Miklos Szeredi | 19dff1b | 2001-10-30 15:06:52 +0000 | [diff] [blame] | 285 | if(newnode != NULL) |
Miklos Szeredi | 97c61e9 | 2001-11-07 12:09:43 +0000 | [diff] [blame] | 286 | unhash_name(f, newnode); |
Miklos Szeredi | 19dff1b | 2001-10-30 15:06:52 +0000 | [diff] [blame] | 287 | |
Miklos Szeredi | 97c61e9 | 2001-11-07 12:09:43 +0000 | [diff] [blame] | 288 | unhash_name(f, node); |
| 289 | hash_name(f, node, newdir, newname); |
Miklos Szeredi | a181e61 | 2001-11-06 12:03:23 +0000 | [diff] [blame] | 290 | pthread_mutex_unlock(&f->lock); |
Miklos Szeredi | 19dff1b | 2001-10-30 15:06:52 +0000 | [diff] [blame] | 291 | } |
| 292 | |
Miklos Szeredi | 85c74fc | 2001-10-28 19:44:14 +0000 | [diff] [blame] | 293 | static void convert_stat(struct stat *stbuf, struct fuse_attr *attr) |
| 294 | { |
| 295 | attr->mode = stbuf->st_mode; |
| 296 | attr->nlink = stbuf->st_nlink; |
| 297 | attr->uid = stbuf->st_uid; |
| 298 | attr->gid = stbuf->st_gid; |
| 299 | attr->rdev = stbuf->st_rdev; |
| 300 | attr->size = stbuf->st_size; |
Miklos Szeredi | 85c74fc | 2001-10-28 19:44:14 +0000 | [diff] [blame] | 301 | attr->blocks = stbuf->st_blocks; |
| 302 | attr->atime = stbuf->st_atime; |
| 303 | attr->mtime = stbuf->st_mtime; |
| 304 | attr->ctime = stbuf->st_ctime; |
Miklos Szeredi | fff56ab | 2001-11-16 10:12:59 +0000 | [diff] [blame] | 305 | attr->_dummy = 4096; |
Miklos Szeredi | 85c74fc | 2001-10-28 19:44:14 +0000 | [diff] [blame] | 306 | } |
| 307 | |
Miklos Szeredi | a181e61 | 2001-11-06 12:03:23 +0000 | [diff] [blame] | 308 | static int fill_dir(struct fuse_dirhandle *dh, char *name, int type) |
Miklos Szeredi | 85c74fc | 2001-10-28 19:44:14 +0000 | [diff] [blame] | 309 | { |
| 310 | struct fuse_dirent dirent; |
| 311 | size_t reclen; |
| 312 | size_t res; |
| 313 | |
Miklos Szeredi | 4369643 | 2001-11-18 19:15:05 +0000 | [diff] [blame] | 314 | dirent.ino = (unsigned long) -1; |
Miklos Szeredi | 85c74fc | 2001-10-28 19:44:14 +0000 | [diff] [blame] | 315 | dirent.namelen = strlen(name); |
| 316 | strncpy(dirent.name, name, sizeof(dirent.name)); |
| 317 | dirent.type = type; |
| 318 | reclen = FUSE_DIRENT_SIZE(&dirent); |
| 319 | res = fwrite(&dirent, reclen, 1, dh->fp); |
| 320 | if(res == 0) { |
Miklos Szeredi | 9624998 | 2001-11-21 12:21:19 +0000 | [diff] [blame] | 321 | perror("fuse: writing directory file"); |
Miklos Szeredi | 85c74fc | 2001-10-28 19:44:14 +0000 | [diff] [blame] | 322 | return -EIO; |
| 323 | } |
| 324 | return 0; |
| 325 | } |
| 326 | |
Miklos Szeredi | 4369643 | 2001-11-18 19:15:05 +0000 | [diff] [blame] | 327 | static void send_reply_raw(struct fuse *f, char *outbuf, size_t outsize) |
| 328 | { |
| 329 | int res; |
| 330 | |
| 331 | if((f->flags & FUSE_DEBUG)) { |
| 332 | struct fuse_out_header *out = (struct fuse_out_header *) outbuf; |
| 333 | printf(" unique: %i, error: %i (%s), outsize: %i\n", out->unique, |
| 334 | out->error, strerror(-out->error), outsize); |
| 335 | fflush(stdout); |
| 336 | } |
Miklos Szeredi | 99ddf0e | 2001-11-25 17:19:59 +0000 | [diff] [blame] | 337 | |
| 338 | /* This needs to be done before the reply because otherwise the |
| 339 | scheduler can tricks with us, and only let the counter be increased |
| 340 | long after the operation is done */ |
| 341 | inc_avail(f); |
| 342 | |
Miklos Szeredi | 4369643 | 2001-11-18 19:15:05 +0000 | [diff] [blame] | 343 | res = write(f->fd, outbuf, outsize); |
| 344 | if(res == -1) { |
| 345 | /* ENOENT means the operation was interrupted */ |
| 346 | if(errno != ENOENT) |
Miklos Szeredi | 9624998 | 2001-11-21 12:21:19 +0000 | [diff] [blame] | 347 | perror("fuse: writing device"); |
Miklos Szeredi | 4369643 | 2001-11-18 19:15:05 +0000 | [diff] [blame] | 348 | } |
| 349 | } |
| 350 | |
Miklos Szeredi | 19dff1b | 2001-10-30 15:06:52 +0000 | [diff] [blame] | 351 | static void send_reply(struct fuse *f, struct fuse_in_header *in, int error, |
Miklos Szeredi | 85c74fc | 2001-10-28 19:44:14 +0000 | [diff] [blame] | 352 | void *arg, size_t argsize) |
| 353 | { |
Miklos Szeredi | 85c74fc | 2001-10-28 19:44:14 +0000 | [diff] [blame] | 354 | char *outbuf; |
| 355 | size_t outsize; |
| 356 | struct fuse_out_header *out; |
| 357 | |
Miklos Szeredi | 19dff1b | 2001-10-30 15:06:52 +0000 | [diff] [blame] | 358 | if(error > 0) { |
Miklos Szeredi | 9624998 | 2001-11-21 12:21:19 +0000 | [diff] [blame] | 359 | fprintf(stderr, "fuse: positive error code: %i\n", error); |
Miklos Szeredi | 19dff1b | 2001-10-30 15:06:52 +0000 | [diff] [blame] | 360 | error = -ERANGE; |
Miklos Szeredi | 85c74fc | 2001-10-28 19:44:14 +0000 | [diff] [blame] | 361 | } |
| 362 | |
Miklos Szeredi | 19dff1b | 2001-10-30 15:06:52 +0000 | [diff] [blame] | 363 | if(error) |
Miklos Szeredi | 85c74fc | 2001-10-28 19:44:14 +0000 | [diff] [blame] | 364 | argsize = 0; |
| 365 | |
| 366 | outsize = sizeof(struct fuse_out_header) + argsize; |
Miklos Szeredi | 97c61e9 | 2001-11-07 12:09:43 +0000 | [diff] [blame] | 367 | outbuf = (char *) malloc(outsize); |
Miklos Szeredi | 85c74fc | 2001-10-28 19:44:14 +0000 | [diff] [blame] | 368 | out = (struct fuse_out_header *) outbuf; |
| 369 | out->unique = in->unique; |
Miklos Szeredi | 19dff1b | 2001-10-30 15:06:52 +0000 | [diff] [blame] | 370 | out->error = error; |
Miklos Szeredi | 85c74fc | 2001-10-28 19:44:14 +0000 | [diff] [blame] | 371 | if(argsize != 0) |
| 372 | memcpy(outbuf + sizeof(struct fuse_out_header), arg, argsize); |
| 373 | |
Miklos Szeredi | 4369643 | 2001-11-18 19:15:05 +0000 | [diff] [blame] | 374 | send_reply_raw(f, outbuf, outsize); |
Miklos Szeredi | 85c74fc | 2001-10-28 19:44:14 +0000 | [diff] [blame] | 375 | |
Miklos Szeredi | 97c61e9 | 2001-11-07 12:09:43 +0000 | [diff] [blame] | 376 | free(outbuf); |
Miklos Szeredi | 85c74fc | 2001-10-28 19:44:14 +0000 | [diff] [blame] | 377 | } |
| 378 | |
| 379 | static void do_lookup(struct fuse *f, struct fuse_in_header *in, char *name) |
| 380 | { |
| 381 | int res; |
Miklos Szeredi | 19dff1b | 2001-10-30 15:06:52 +0000 | [diff] [blame] | 382 | char *path; |
| 383 | struct stat buf; |
Miklos Szeredi | 85c74fc | 2001-10-28 19:44:14 +0000 | [diff] [blame] | 384 | struct fuse_lookup_out arg; |
| 385 | |
Miklos Szeredi | 5e18348 | 2001-10-31 14:52:35 +0000 | [diff] [blame] | 386 | res = -ENOENT; |
Miklos Szeredi | a181e61 | 2001-11-06 12:03:23 +0000 | [diff] [blame] | 387 | path = get_path_name(f, in->ino, name); |
Miklos Szeredi | 5e18348 | 2001-10-31 14:52:35 +0000 | [diff] [blame] | 388 | if(path != NULL) { |
Miklos Szeredi | 6ebe234 | 2002-01-06 21:44:16 +0000 | [diff] [blame] | 389 | if(f->flags & FUSE_DEBUG) { |
| 390 | printf("LOOKUP %s\n", path); |
| 391 | fflush(stdout); |
| 392 | } |
Miklos Szeredi | 5e18348 | 2001-10-31 14:52:35 +0000 | [diff] [blame] | 393 | res = -ENOSYS; |
| 394 | if(f->op.getattr) |
Miklos Szeredi | 0a7077f | 2001-11-11 18:20:17 +0000 | [diff] [blame] | 395 | res = f->op.getattr(path, &buf); |
Miklos Szeredi | 97c61e9 | 2001-11-07 12:09:43 +0000 | [diff] [blame] | 396 | free(path); |
Miklos Szeredi | 5e18348 | 2001-10-31 14:52:35 +0000 | [diff] [blame] | 397 | } |
Miklos Szeredi | 19dff1b | 2001-10-30 15:06:52 +0000 | [diff] [blame] | 398 | if(res == 0) { |
| 399 | convert_stat(&buf, &arg.attr); |
Miklos Szeredi | a181e61 | 2001-11-06 12:03:23 +0000 | [diff] [blame] | 400 | arg.ino = find_node(f, in->ino, name, &arg.attr, in->unique); |
Miklos Szeredi | 6ebe234 | 2002-01-06 21:44:16 +0000 | [diff] [blame] | 401 | if(f->flags & FUSE_DEBUG) { |
| 402 | printf(" LOOKUP: %li\n", arg.ino); |
| 403 | fflush(stdout); |
| 404 | } |
Miklos Szeredi | 19dff1b | 2001-10-30 15:06:52 +0000 | [diff] [blame] | 405 | } |
Miklos Szeredi | 85c74fc | 2001-10-28 19:44:14 +0000 | [diff] [blame] | 406 | send_reply(f, in, res, &arg, sizeof(arg)); |
| 407 | } |
| 408 | |
Miklos Szeredi | a181e61 | 2001-11-06 12:03:23 +0000 | [diff] [blame] | 409 | static void do_forget(struct fuse *f, struct fuse_in_header *in, |
| 410 | struct fuse_forget_in *arg) |
Miklos Szeredi | 85c74fc | 2001-10-28 19:44:14 +0000 | [diff] [blame] | 411 | { |
Miklos Szeredi | 4369643 | 2001-11-18 19:15:05 +0000 | [diff] [blame] | 412 | if(f->flags & FUSE_DEBUG) { |
| 413 | printf("FORGET %li/%i\n", in->ino, arg->version); |
| 414 | fflush(stdout); |
| 415 | } |
Miklos Szeredi | a181e61 | 2001-11-06 12:03:23 +0000 | [diff] [blame] | 416 | destroy_node(f, in->ino, arg->version); |
Miklos Szeredi | 85c74fc | 2001-10-28 19:44:14 +0000 | [diff] [blame] | 417 | } |
| 418 | |
| 419 | static void do_getattr(struct fuse *f, struct fuse_in_header *in) |
| 420 | { |
| 421 | int res; |
Miklos Szeredi | 19dff1b | 2001-10-30 15:06:52 +0000 | [diff] [blame] | 422 | char *path; |
| 423 | struct stat buf; |
Miklos Szeredi | 85c74fc | 2001-10-28 19:44:14 +0000 | [diff] [blame] | 424 | struct fuse_getattr_out arg; |
| 425 | |
Miklos Szeredi | 5e18348 | 2001-10-31 14:52:35 +0000 | [diff] [blame] | 426 | res = -ENOENT; |
Miklos Szeredi | a181e61 | 2001-11-06 12:03:23 +0000 | [diff] [blame] | 427 | path = get_path(f, in->ino); |
Miklos Szeredi | 5e18348 | 2001-10-31 14:52:35 +0000 | [diff] [blame] | 428 | if(path != NULL) { |
| 429 | res = -ENOSYS; |
| 430 | if(f->op.getattr) |
Miklos Szeredi | 0a7077f | 2001-11-11 18:20:17 +0000 | [diff] [blame] | 431 | res = f->op.getattr(path, &buf); |
Miklos Szeredi | 97c61e9 | 2001-11-07 12:09:43 +0000 | [diff] [blame] | 432 | free(path); |
Miklos Szeredi | 5e18348 | 2001-10-31 14:52:35 +0000 | [diff] [blame] | 433 | } |
Miklos Szeredi | 19dff1b | 2001-10-30 15:06:52 +0000 | [diff] [blame] | 434 | if(res == 0) |
| 435 | convert_stat(&buf, &arg.attr); |
| 436 | |
Miklos Szeredi | 85c74fc | 2001-10-28 19:44:14 +0000 | [diff] [blame] | 437 | send_reply(f, in, res, &arg, sizeof(arg)); |
| 438 | } |
| 439 | |
Miklos Szeredi | 680a69a | 2001-11-16 13:31:14 +0000 | [diff] [blame] | 440 | 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] | 441 | { |
| 442 | int res; |
| 443 | |
| 444 | res = -ENOSYS; |
| 445 | if(f->op.chmod) |
Miklos Szeredi | 0a7077f | 2001-11-11 18:20:17 +0000 | [diff] [blame] | 446 | res = f->op.chmod(path, attr->mode); |
Miklos Szeredi | f3ea83b | 2001-11-07 14:55:16 +0000 | [diff] [blame] | 447 | |
| 448 | return res; |
| 449 | } |
| 450 | |
Miklos Szeredi | 680a69a | 2001-11-16 13:31:14 +0000 | [diff] [blame] | 451 | 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] | 452 | int valid) |
Miklos Szeredi | f3ea83b | 2001-11-07 14:55:16 +0000 | [diff] [blame] | 453 | { |
| 454 | int res; |
| 455 | uid_t uid = (valid & FATTR_UID) ? attr->uid : (uid_t) -1; |
| 456 | gid_t gid = (valid & FATTR_GID) ? attr->gid : (gid_t) -1; |
| 457 | |
| 458 | res = -ENOSYS; |
| 459 | if(f->op.chown) |
Miklos Szeredi | 0a7077f | 2001-11-11 18:20:17 +0000 | [diff] [blame] | 460 | res = f->op.chown(path, uid, gid); |
Miklos Szeredi | f3ea83b | 2001-11-07 14:55:16 +0000 | [diff] [blame] | 461 | |
| 462 | return res; |
| 463 | } |
| 464 | |
Miklos Szeredi | 680a69a | 2001-11-16 13:31:14 +0000 | [diff] [blame] | 465 | static int do_truncate(struct fuse *f, const char *path, |
| 466 | struct fuse_attr *attr) |
Miklos Szeredi | f3ea83b | 2001-11-07 14:55:16 +0000 | [diff] [blame] | 467 | { |
| 468 | int res; |
| 469 | |
| 470 | res = -ENOSYS; |
| 471 | if(f->op.truncate) |
Miklos Szeredi | 0a7077f | 2001-11-11 18:20:17 +0000 | [diff] [blame] | 472 | res = f->op.truncate(path, attr->size); |
Miklos Szeredi | f3ea83b | 2001-11-07 14:55:16 +0000 | [diff] [blame] | 473 | |
| 474 | return res; |
| 475 | } |
| 476 | |
Miklos Szeredi | 680a69a | 2001-11-16 13:31:14 +0000 | [diff] [blame] | 477 | 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] | 478 | { |
| 479 | int res; |
| 480 | struct utimbuf buf; |
| 481 | buf.actime = attr->atime; |
| 482 | buf.modtime = attr->mtime; |
| 483 | res = -ENOSYS; |
| 484 | if(f->op.utime) |
Miklos Szeredi | 0a7077f | 2001-11-11 18:20:17 +0000 | [diff] [blame] | 485 | res = f->op.utime(path, &buf); |
Miklos Szeredi | f3ea83b | 2001-11-07 14:55:16 +0000 | [diff] [blame] | 486 | |
| 487 | return res; |
| 488 | } |
| 489 | |
Miklos Szeredi | 5e18348 | 2001-10-31 14:52:35 +0000 | [diff] [blame] | 490 | static void do_setattr(struct fuse *f, struct fuse_in_header *in, |
| 491 | struct fuse_setattr_in *arg) |
| 492 | { |
| 493 | int res; |
| 494 | char *path; |
| 495 | int valid = arg->valid; |
| 496 | struct fuse_attr *attr = &arg->attr; |
Miklos Szeredi | a181e61 | 2001-11-06 12:03:23 +0000 | [diff] [blame] | 497 | struct fuse_setattr_out outarg; |
Miklos Szeredi | 5e18348 | 2001-10-31 14:52:35 +0000 | [diff] [blame] | 498 | |
| 499 | res = -ENOENT; |
Miklos Szeredi | a181e61 | 2001-11-06 12:03:23 +0000 | [diff] [blame] | 500 | path = get_path(f, in->ino); |
Miklos Szeredi | 5e18348 | 2001-10-31 14:52:35 +0000 | [diff] [blame] | 501 | if(path != NULL) { |
Miklos Szeredi | f3ea83b | 2001-11-07 14:55:16 +0000 | [diff] [blame] | 502 | res = -ENOSYS; |
| 503 | if(f->op.getattr) { |
| 504 | res = 0; |
| 505 | if(!res && (valid & FATTR_MODE)) |
Miklos Szeredi | 0a7077f | 2001-11-11 18:20:17 +0000 | [diff] [blame] | 506 | res = do_chmod(f, path, attr); |
Miklos Szeredi | f3ea83b | 2001-11-07 14:55:16 +0000 | [diff] [blame] | 507 | if(!res && (valid & (FATTR_UID | FATTR_GID))) |
Miklos Szeredi | 0a7077f | 2001-11-11 18:20:17 +0000 | [diff] [blame] | 508 | res = do_chown(f, path, attr, valid); |
Miklos Szeredi | f3ea83b | 2001-11-07 14:55:16 +0000 | [diff] [blame] | 509 | if(!res && (valid & FATTR_SIZE)) |
Miklos Szeredi | 0a7077f | 2001-11-11 18:20:17 +0000 | [diff] [blame] | 510 | res = do_truncate(f, path, attr); |
Miklos Szeredi | f3ea83b | 2001-11-07 14:55:16 +0000 | [diff] [blame] | 511 | if(!res && (valid & FATTR_UTIME)) |
Miklos Szeredi | 0a7077f | 2001-11-11 18:20:17 +0000 | [diff] [blame] | 512 | res = do_utime(f, path, attr); |
Miklos Szeredi | f3ea83b | 2001-11-07 14:55:16 +0000 | [diff] [blame] | 513 | if(!res) { |
| 514 | struct stat buf; |
Miklos Szeredi | 0a7077f | 2001-11-11 18:20:17 +0000 | [diff] [blame] | 515 | res = f->op.getattr(path, &buf); |
Miklos Szeredi | f3ea83b | 2001-11-07 14:55:16 +0000 | [diff] [blame] | 516 | if(!res) |
| 517 | convert_stat(&buf, &outarg.attr); |
Miklos Szeredi | a181e61 | 2001-11-06 12:03:23 +0000 | [diff] [blame] | 518 | } |
Miklos Szeredi | 5e18348 | 2001-10-31 14:52:35 +0000 | [diff] [blame] | 519 | } |
Miklos Szeredi | 97c61e9 | 2001-11-07 12:09:43 +0000 | [diff] [blame] | 520 | free(path); |
Miklos Szeredi | 5e18348 | 2001-10-31 14:52:35 +0000 | [diff] [blame] | 521 | } |
Miklos Szeredi | a181e61 | 2001-11-06 12:03:23 +0000 | [diff] [blame] | 522 | send_reply(f, in, res, &outarg, sizeof(outarg)); |
Miklos Szeredi | 5e18348 | 2001-10-31 14:52:35 +0000 | [diff] [blame] | 523 | } |
| 524 | |
Miklos Szeredi | 85c74fc | 2001-10-28 19:44:14 +0000 | [diff] [blame] | 525 | static void do_readlink(struct fuse *f, struct fuse_in_header *in) |
| 526 | { |
| 527 | int res; |
| 528 | char link[PATH_MAX + 1]; |
Miklos Szeredi | b483c93 | 2001-10-29 14:57:57 +0000 | [diff] [blame] | 529 | char *path; |
Miklos Szeredi | 85c74fc | 2001-10-28 19:44:14 +0000 | [diff] [blame] | 530 | |
Miklos Szeredi | 5e18348 | 2001-10-31 14:52:35 +0000 | [diff] [blame] | 531 | res = -ENOENT; |
Miklos Szeredi | a181e61 | 2001-11-06 12:03:23 +0000 | [diff] [blame] | 532 | path = get_path(f, in->ino); |
Miklos Szeredi | 5e18348 | 2001-10-31 14:52:35 +0000 | [diff] [blame] | 533 | if(path != NULL) { |
| 534 | res = -ENOSYS; |
| 535 | if(f->op.readlink) |
Miklos Szeredi | 0a7077f | 2001-11-11 18:20:17 +0000 | [diff] [blame] | 536 | res = f->op.readlink(path, link, sizeof(link)); |
Miklos Szeredi | 97c61e9 | 2001-11-07 12:09:43 +0000 | [diff] [blame] | 537 | free(path); |
Miklos Szeredi | 5e18348 | 2001-10-31 14:52:35 +0000 | [diff] [blame] | 538 | } |
Miklos Szeredi | 2df1c04 | 2001-11-06 15:07:17 +0000 | [diff] [blame] | 539 | link[PATH_MAX] = '\0'; |
Miklos Szeredi | 4b2bef4 | 2002-01-09 12:23:27 +0000 | [diff] [blame] | 540 | send_reply(f, in, res, link, res == 0 ? strlen(link) : 0); |
Miklos Szeredi | 85c74fc | 2001-10-28 19:44:14 +0000 | [diff] [blame] | 541 | } |
| 542 | |
| 543 | static void do_getdir(struct fuse *f, struct fuse_in_header *in) |
| 544 | { |
| 545 | int res; |
| 546 | struct fuse_getdir_out arg; |
Miklos Szeredi | a181e61 | 2001-11-06 12:03:23 +0000 | [diff] [blame] | 547 | struct fuse_dirhandle dh; |
Miklos Szeredi | b483c93 | 2001-10-29 14:57:57 +0000 | [diff] [blame] | 548 | char *path; |
Miklos Szeredi | 85c74fc | 2001-10-28 19:44:14 +0000 | [diff] [blame] | 549 | |
Miklos Szeredi | b483c93 | 2001-10-29 14:57:57 +0000 | [diff] [blame] | 550 | dh.fuse = f; |
| 551 | dh.fp = tmpfile(); |
| 552 | dh.dir = in->ino; |
Miklos Szeredi | 5e18348 | 2001-10-31 14:52:35 +0000 | [diff] [blame] | 553 | res = -ENOENT; |
Miklos Szeredi | a181e61 | 2001-11-06 12:03:23 +0000 | [diff] [blame] | 554 | path = get_path(f, in->ino); |
Miklos Szeredi | 5e18348 | 2001-10-31 14:52:35 +0000 | [diff] [blame] | 555 | if(path != NULL) { |
| 556 | res = -ENOSYS; |
| 557 | if(f->op.getdir) |
Miklos Szeredi | 0a7077f | 2001-11-11 18:20:17 +0000 | [diff] [blame] | 558 | res = f->op.getdir(path, &dh, (fuse_dirfil_t) fill_dir); |
Miklos Szeredi | 97c61e9 | 2001-11-07 12:09:43 +0000 | [diff] [blame] | 559 | free(path); |
Miklos Szeredi | 5e18348 | 2001-10-31 14:52:35 +0000 | [diff] [blame] | 560 | } |
Miklos Szeredi | b483c93 | 2001-10-29 14:57:57 +0000 | [diff] [blame] | 561 | fflush(dh.fp); |
| 562 | arg.fd = fileno(dh.fp); |
Miklos Szeredi | 85c74fc | 2001-10-28 19:44:14 +0000 | [diff] [blame] | 563 | send_reply(f, in, res, &arg, sizeof(arg)); |
Miklos Szeredi | b483c93 | 2001-10-29 14:57:57 +0000 | [diff] [blame] | 564 | fclose(dh.fp); |
Miklos Szeredi | 85c74fc | 2001-10-28 19:44:14 +0000 | [diff] [blame] | 565 | } |
| 566 | |
Miklos Szeredi | b483c93 | 2001-10-29 14:57:57 +0000 | [diff] [blame] | 567 | static void do_mknod(struct fuse *f, struct fuse_in_header *in, |
| 568 | struct fuse_mknod_in *inarg) |
| 569 | { |
| 570 | int res; |
| 571 | char *path; |
| 572 | struct fuse_mknod_out outarg; |
| 573 | struct stat buf; |
| 574 | |
Miklos Szeredi | 5e18348 | 2001-10-31 14:52:35 +0000 | [diff] [blame] | 575 | res = -ENOENT; |
Miklos Szeredi | 6bf8b68 | 2002-10-28 08:49:39 +0000 | [diff] [blame] | 576 | path = get_path_name(f, in->ino, PARAM(inarg)); |
Miklos Szeredi | 5e18348 | 2001-10-31 14:52:35 +0000 | [diff] [blame] | 577 | if(path != NULL) { |
| 578 | res = -ENOSYS; |
| 579 | if(f->op.mknod && f->op.getattr) { |
Miklos Szeredi | 0a7077f | 2001-11-11 18:20:17 +0000 | [diff] [blame] | 580 | res = f->op.mknod(path, inarg->mode, inarg->rdev); |
Miklos Szeredi | 5e18348 | 2001-10-31 14:52:35 +0000 | [diff] [blame] | 581 | if(res == 0) |
Miklos Szeredi | 0a7077f | 2001-11-11 18:20:17 +0000 | [diff] [blame] | 582 | res = f->op.getattr(path, &buf); |
Miklos Szeredi | 5e18348 | 2001-10-31 14:52:35 +0000 | [diff] [blame] | 583 | } |
Miklos Szeredi | 97c61e9 | 2001-11-07 12:09:43 +0000 | [diff] [blame] | 584 | free(path); |
Miklos Szeredi | b483c93 | 2001-10-29 14:57:57 +0000 | [diff] [blame] | 585 | } |
Miklos Szeredi | 19dff1b | 2001-10-30 15:06:52 +0000 | [diff] [blame] | 586 | if(res == 0) { |
Miklos Szeredi | b483c93 | 2001-10-29 14:57:57 +0000 | [diff] [blame] | 587 | convert_stat(&buf, &outarg.attr); |
Miklos Szeredi | 6bf8b68 | 2002-10-28 08:49:39 +0000 | [diff] [blame] | 588 | outarg.ino = find_node(f, in->ino, PARAM(inarg), &outarg.attr, |
Miklos Szeredi | a181e61 | 2001-11-06 12:03:23 +0000 | [diff] [blame] | 589 | in->unique); |
Miklos Szeredi | 19dff1b | 2001-10-30 15:06:52 +0000 | [diff] [blame] | 590 | } |
Miklos Szeredi | b483c93 | 2001-10-29 14:57:57 +0000 | [diff] [blame] | 591 | |
| 592 | send_reply(f, in, res, &outarg, sizeof(outarg)); |
| 593 | } |
| 594 | |
| 595 | static void do_mkdir(struct fuse *f, struct fuse_in_header *in, |
| 596 | struct fuse_mkdir_in *inarg) |
| 597 | { |
| 598 | int res; |
| 599 | char *path; |
| 600 | |
Miklos Szeredi | 5e18348 | 2001-10-31 14:52:35 +0000 | [diff] [blame] | 601 | res = -ENOENT; |
Miklos Szeredi | 6bf8b68 | 2002-10-28 08:49:39 +0000 | [diff] [blame] | 602 | path = get_path_name(f, in->ino, PARAM(inarg)); |
Miklos Szeredi | 5e18348 | 2001-10-31 14:52:35 +0000 | [diff] [blame] | 603 | if(path != NULL) { |
| 604 | res = -ENOSYS; |
| 605 | if(f->op.mkdir) |
Miklos Szeredi | 0a7077f | 2001-11-11 18:20:17 +0000 | [diff] [blame] | 606 | res = f->op.mkdir(path, inarg->mode); |
Miklos Szeredi | 97c61e9 | 2001-11-07 12:09:43 +0000 | [diff] [blame] | 607 | free(path); |
Miklos Szeredi | 5e18348 | 2001-10-31 14:52:35 +0000 | [diff] [blame] | 608 | } |
Miklos Szeredi | b483c93 | 2001-10-29 14:57:57 +0000 | [diff] [blame] | 609 | send_reply(f, in, res, NULL, 0); |
| 610 | } |
| 611 | |
| 612 | static void do_remove(struct fuse *f, struct fuse_in_header *in, char *name) |
| 613 | { |
| 614 | int res; |
| 615 | char *path; |
| 616 | |
Miklos Szeredi | 5e18348 | 2001-10-31 14:52:35 +0000 | [diff] [blame] | 617 | res = -ENOENT; |
Miklos Szeredi | a181e61 | 2001-11-06 12:03:23 +0000 | [diff] [blame] | 618 | path = get_path_name(f, in->ino, name); |
Miklos Szeredi | 5e18348 | 2001-10-31 14:52:35 +0000 | [diff] [blame] | 619 | if(path != NULL) { |
| 620 | res = -ENOSYS; |
| 621 | if(in->opcode == FUSE_UNLINK) { |
| 622 | if(f->op.unlink) |
Miklos Szeredi | 0a7077f | 2001-11-11 18:20:17 +0000 | [diff] [blame] | 623 | res = f->op.unlink(path); |
Miklos Szeredi | 5e18348 | 2001-10-31 14:52:35 +0000 | [diff] [blame] | 624 | } |
| 625 | else { |
| 626 | if(f->op.rmdir) |
Miklos Szeredi | 0a7077f | 2001-11-11 18:20:17 +0000 | [diff] [blame] | 627 | res = f->op.rmdir(path); |
Miklos Szeredi | 5e18348 | 2001-10-31 14:52:35 +0000 | [diff] [blame] | 628 | } |
Miklos Szeredi | 97c61e9 | 2001-11-07 12:09:43 +0000 | [diff] [blame] | 629 | free(path); |
Miklos Szeredi | b483c93 | 2001-10-29 14:57:57 +0000 | [diff] [blame] | 630 | } |
Miklos Szeredi | 5e18348 | 2001-10-31 14:52:35 +0000 | [diff] [blame] | 631 | if(res == 0) |
| 632 | remove_node(f, in->ino, name); |
Miklos Szeredi | b483c93 | 2001-10-29 14:57:57 +0000 | [diff] [blame] | 633 | send_reply(f, in, res, NULL, 0); |
| 634 | } |
| 635 | |
| 636 | static void do_symlink(struct fuse *f, struct fuse_in_header *in, char *name, |
| 637 | char *link) |
| 638 | { |
| 639 | int res; |
| 640 | char *path; |
| 641 | |
Miklos Szeredi | 5e18348 | 2001-10-31 14:52:35 +0000 | [diff] [blame] | 642 | res = -ENOENT; |
Miklos Szeredi | a181e61 | 2001-11-06 12:03:23 +0000 | [diff] [blame] | 643 | path = get_path_name(f, in->ino, name); |
Miklos Szeredi | 5e18348 | 2001-10-31 14:52:35 +0000 | [diff] [blame] | 644 | if(path != NULL) { |
| 645 | res = -ENOSYS; |
| 646 | if(f->op.symlink) |
Miklos Szeredi | 0a7077f | 2001-11-11 18:20:17 +0000 | [diff] [blame] | 647 | res = f->op.symlink(link, path); |
Miklos Szeredi | 97c61e9 | 2001-11-07 12:09:43 +0000 | [diff] [blame] | 648 | free(path); |
Miklos Szeredi | 5e18348 | 2001-10-31 14:52:35 +0000 | [diff] [blame] | 649 | } |
Miklos Szeredi | b483c93 | 2001-10-29 14:57:57 +0000 | [diff] [blame] | 650 | send_reply(f, in, res, NULL, 0); |
| 651 | } |
| 652 | |
Miklos Szeredi | 19dff1b | 2001-10-30 15:06:52 +0000 | [diff] [blame] | 653 | static void do_rename(struct fuse *f, struct fuse_in_header *in, |
| 654 | struct fuse_rename_in *inarg) |
| 655 | { |
| 656 | int res; |
| 657 | fino_t olddir = in->ino; |
| 658 | fino_t newdir = inarg->newdir; |
Miklos Szeredi | 6bf8b68 | 2002-10-28 08:49:39 +0000 | [diff] [blame] | 659 | char *oldname = PARAM(inarg); |
| 660 | char *newname = oldname + strlen(oldname) + 1; |
Miklos Szeredi | 5e18348 | 2001-10-31 14:52:35 +0000 | [diff] [blame] | 661 | char *oldpath; |
| 662 | char *newpath; |
Miklos Szeredi | 19dff1b | 2001-10-30 15:06:52 +0000 | [diff] [blame] | 663 | |
Miklos Szeredi | 5e18348 | 2001-10-31 14:52:35 +0000 | [diff] [blame] | 664 | res = -ENOENT; |
Miklos Szeredi | a181e61 | 2001-11-06 12:03:23 +0000 | [diff] [blame] | 665 | oldpath = get_path_name(f, olddir, oldname); |
Miklos Szeredi | 5e18348 | 2001-10-31 14:52:35 +0000 | [diff] [blame] | 666 | if(oldpath != NULL) { |
Miklos Szeredi | a181e61 | 2001-11-06 12:03:23 +0000 | [diff] [blame] | 667 | newpath = get_path_name(f, newdir, newname); |
Miklos Szeredi | 5e18348 | 2001-10-31 14:52:35 +0000 | [diff] [blame] | 668 | if(newpath != NULL) { |
| 669 | res = -ENOSYS; |
| 670 | if(f->op.rename) |
Miklos Szeredi | 0a7077f | 2001-11-11 18:20:17 +0000 | [diff] [blame] | 671 | res = f->op.rename(oldpath, newpath); |
Miklos Szeredi | 5e18348 | 2001-10-31 14:52:35 +0000 | [diff] [blame] | 672 | if(res == 0) |
| 673 | rename_node(f, olddir, oldname, newdir, newname); |
Miklos Szeredi | 97c61e9 | 2001-11-07 12:09:43 +0000 | [diff] [blame] | 674 | free(newpath); |
Miklos Szeredi | 5e18348 | 2001-10-31 14:52:35 +0000 | [diff] [blame] | 675 | } |
Miklos Szeredi | 97c61e9 | 2001-11-07 12:09:43 +0000 | [diff] [blame] | 676 | free(oldpath); |
Miklos Szeredi | 5e18348 | 2001-10-31 14:52:35 +0000 | [diff] [blame] | 677 | } |
Miklos Szeredi | 19dff1b | 2001-10-30 15:06:52 +0000 | [diff] [blame] | 678 | send_reply(f, in, res, NULL, 0); |
| 679 | } |
| 680 | |
| 681 | static void do_link(struct fuse *f, struct fuse_in_header *in, |
Miklos Szeredi | 5e18348 | 2001-10-31 14:52:35 +0000 | [diff] [blame] | 682 | struct fuse_link_in *arg) |
Miklos Szeredi | 19dff1b | 2001-10-30 15:06:52 +0000 | [diff] [blame] | 683 | { |
| 684 | int res; |
Miklos Szeredi | 5e18348 | 2001-10-31 14:52:35 +0000 | [diff] [blame] | 685 | char *oldpath; |
| 686 | char *newpath; |
Miklos Szeredi | 19dff1b | 2001-10-30 15:06:52 +0000 | [diff] [blame] | 687 | |
Miklos Szeredi | 5e18348 | 2001-10-31 14:52:35 +0000 | [diff] [blame] | 688 | res = -ENOENT; |
Miklos Szeredi | a181e61 | 2001-11-06 12:03:23 +0000 | [diff] [blame] | 689 | oldpath = get_path(f, in->ino); |
Miklos Szeredi | 5e18348 | 2001-10-31 14:52:35 +0000 | [diff] [blame] | 690 | if(oldpath != NULL) { |
Miklos Szeredi | 6bf8b68 | 2002-10-28 08:49:39 +0000 | [diff] [blame] | 691 | newpath = get_path_name(f, arg->newdir, PARAM(arg)); |
Miklos Szeredi | 5e18348 | 2001-10-31 14:52:35 +0000 | [diff] [blame] | 692 | if(newpath != NULL) { |
| 693 | res = -ENOSYS; |
| 694 | if(f->op.link) |
Miklos Szeredi | 0a7077f | 2001-11-11 18:20:17 +0000 | [diff] [blame] | 695 | res = f->op.link(oldpath, newpath); |
Miklos Szeredi | 97c61e9 | 2001-11-07 12:09:43 +0000 | [diff] [blame] | 696 | free(newpath); |
Miklos Szeredi | 5e18348 | 2001-10-31 14:52:35 +0000 | [diff] [blame] | 697 | } |
Miklos Szeredi | 97c61e9 | 2001-11-07 12:09:43 +0000 | [diff] [blame] | 698 | free(oldpath); |
Miklos Szeredi | 5e18348 | 2001-10-31 14:52:35 +0000 | [diff] [blame] | 699 | } |
Miklos Szeredi | 19dff1b | 2001-10-30 15:06:52 +0000 | [diff] [blame] | 700 | send_reply(f, in, res, NULL, 0); |
| 701 | } |
| 702 | |
Miklos Szeredi | 5e18348 | 2001-10-31 14:52:35 +0000 | [diff] [blame] | 703 | static void do_open(struct fuse *f, struct fuse_in_header *in, |
| 704 | struct fuse_open_in *arg) |
| 705 | { |
| 706 | int res; |
| 707 | char *path; |
| 708 | |
| 709 | res = -ENOENT; |
Miklos Szeredi | a181e61 | 2001-11-06 12:03:23 +0000 | [diff] [blame] | 710 | path = get_path(f, in->ino); |
Miklos Szeredi | 5e18348 | 2001-10-31 14:52:35 +0000 | [diff] [blame] | 711 | if(path != NULL) { |
| 712 | res = -ENOSYS; |
| 713 | if(f->op.open) |
Miklos Szeredi | 0a7077f | 2001-11-11 18:20:17 +0000 | [diff] [blame] | 714 | res = f->op.open(path, arg->flags); |
Miklos Szeredi | 97c61e9 | 2001-11-07 12:09:43 +0000 | [diff] [blame] | 715 | free(path); |
Miklos Szeredi | 5e18348 | 2001-10-31 14:52:35 +0000 | [diff] [blame] | 716 | } |
| 717 | send_reply(f, in, res, NULL, 0); |
| 718 | } |
| 719 | |
| 720 | static void do_read(struct fuse *f, struct fuse_in_header *in, |
| 721 | struct fuse_read_in *arg) |
| 722 | { |
| 723 | int res; |
| 724 | char *path; |
Miklos Szeredi | 4369643 | 2001-11-18 19:15:05 +0000 | [diff] [blame] | 725 | char *outbuf = (char *) malloc(sizeof(struct fuse_out_header) + arg->size); |
| 726 | struct fuse_out_header *out = (struct fuse_out_header *) outbuf; |
| 727 | char *buf = outbuf + sizeof(struct fuse_out_header); |
Miklos Szeredi | 5e18348 | 2001-10-31 14:52:35 +0000 | [diff] [blame] | 728 | size_t size; |
Miklos Szeredi | 4369643 | 2001-11-18 19:15:05 +0000 | [diff] [blame] | 729 | size_t outsize; |
Miklos Szeredi | 5e18348 | 2001-10-31 14:52:35 +0000 | [diff] [blame] | 730 | |
Miklos Szeredi | 97c61e9 | 2001-11-07 12:09:43 +0000 | [diff] [blame] | 731 | res = -ENOENT; |
Miklos Szeredi | a181e61 | 2001-11-06 12:03:23 +0000 | [diff] [blame] | 732 | path = get_path(f, in->ino); |
Miklos Szeredi | 5e18348 | 2001-10-31 14:52:35 +0000 | [diff] [blame] | 733 | if(path != NULL) { |
Miklos Szeredi | 6ebe234 | 2002-01-06 21:44:16 +0000 | [diff] [blame] | 734 | if(f->flags & FUSE_DEBUG) { |
| 735 | printf("READ %u bytes from %llu\n", arg->size, arg->offset); |
| 736 | fflush(stdout); |
| 737 | } |
| 738 | |
Miklos Szeredi | 5e18348 | 2001-10-31 14:52:35 +0000 | [diff] [blame] | 739 | res = -ENOSYS; |
Miklos Szeredi | a181e61 | 2001-11-06 12:03:23 +0000 | [diff] [blame] | 740 | if(f->op.read) |
Miklos Szeredi | 0a7077f | 2001-11-11 18:20:17 +0000 | [diff] [blame] | 741 | res = f->op.read(path, buf, arg->size, arg->offset); |
Miklos Szeredi | 97c61e9 | 2001-11-07 12:09:43 +0000 | [diff] [blame] | 742 | free(path); |
Miklos Szeredi | 5e18348 | 2001-10-31 14:52:35 +0000 | [diff] [blame] | 743 | } |
| 744 | |
| 745 | size = 0; |
| 746 | if(res > 0) { |
| 747 | size = res; |
| 748 | res = 0; |
Miklos Szeredi | 6ebe234 | 2002-01-06 21:44:16 +0000 | [diff] [blame] | 749 | if(f->flags & FUSE_DEBUG) { |
| 750 | printf(" READ %u bytes\n", size); |
| 751 | fflush(stdout); |
| 752 | } |
Miklos Szeredi | 5e18348 | 2001-10-31 14:52:35 +0000 | [diff] [blame] | 753 | } |
Miklos Szeredi | 4369643 | 2001-11-18 19:15:05 +0000 | [diff] [blame] | 754 | out->unique = in->unique; |
| 755 | out->error = res; |
| 756 | outsize = sizeof(struct fuse_out_header) + size; |
| 757 | |
| 758 | send_reply_raw(f, outbuf, outsize); |
| 759 | free(outbuf); |
Miklos Szeredi | 5e18348 | 2001-10-31 14:52:35 +0000 | [diff] [blame] | 760 | } |
Miklos Szeredi | b483c93 | 2001-10-29 14:57:57 +0000 | [diff] [blame] | 761 | |
Miklos Szeredi | a181e61 | 2001-11-06 12:03:23 +0000 | [diff] [blame] | 762 | static void do_write(struct fuse *f, struct fuse_in_header *in, |
| 763 | struct fuse_write_in *arg) |
| 764 | { |
| 765 | int res; |
| 766 | char *path; |
Miklos Szeredi | a181e61 | 2001-11-06 12:03:23 +0000 | [diff] [blame] | 767 | |
Miklos Szeredi | 97c61e9 | 2001-11-07 12:09:43 +0000 | [diff] [blame] | 768 | res = -ENOENT; |
Miklos Szeredi | a181e61 | 2001-11-06 12:03:23 +0000 | [diff] [blame] | 769 | path = get_path(f, in->ino); |
| 770 | if(path != NULL) { |
Miklos Szeredi | 6ebe234 | 2002-01-06 21:44:16 +0000 | [diff] [blame] | 771 | if(f->flags & FUSE_DEBUG) { |
| 772 | printf("WRITE %u bytes to %llu\n", arg->size, arg->offset); |
| 773 | fflush(stdout); |
| 774 | } |
| 775 | |
Miklos Szeredi | a181e61 | 2001-11-06 12:03:23 +0000 | [diff] [blame] | 776 | res = -ENOSYS; |
| 777 | if(f->op.write) |
Miklos Szeredi | 6bf8b68 | 2002-10-28 08:49:39 +0000 | [diff] [blame] | 778 | res = f->op.write(path, PARAM(arg), arg->size, arg->offset); |
Miklos Szeredi | 97c61e9 | 2001-11-07 12:09:43 +0000 | [diff] [blame] | 779 | free(path); |
Miklos Szeredi | a181e61 | 2001-11-06 12:03:23 +0000 | [diff] [blame] | 780 | } |
| 781 | |
| 782 | if(res > 0) { |
| 783 | if((size_t) res != arg->size) { |
| 784 | fprintf(stderr, "short write: %u (should be %u)\n", res, |
| 785 | arg->size); |
| 786 | res = -EIO; |
| 787 | } |
| 788 | else |
| 789 | res = 0; |
| 790 | } |
| 791 | |
| 792 | send_reply(f, in, res, NULL, 0); |
| 793 | } |
| 794 | |
Mark Glines | d84b39a | 2002-01-07 16:32:02 +0000 | [diff] [blame] | 795 | static void do_statfs(struct fuse *f, struct fuse_in_header *in) |
| 796 | { |
| 797 | int res; |
Mark Glines | d84b39a | 2002-01-07 16:32:02 +0000 | [diff] [blame] | 798 | struct fuse_statfs_out arg; |
| 799 | |
| 800 | res = -ENOSYS; |
| 801 | if(f->op.statfs) |
Miklos Szeredi | 24ed945 | 2002-10-07 10:24:26 +0000 | [diff] [blame] | 802 | res = f->op.statfs((struct fuse_statfs *) &arg.st); |
Miklos Szeredi | 4b2bef4 | 2002-01-09 12:23:27 +0000 | [diff] [blame] | 803 | |
Mark Glines | d84b39a | 2002-01-07 16:32:02 +0000 | [diff] [blame] | 804 | send_reply(f, in, res, &arg, sizeof(arg)); |
| 805 | } |
| 806 | |
Miklos Szeredi | 4369643 | 2001-11-18 19:15:05 +0000 | [diff] [blame] | 807 | static void free_cmd(struct fuse_cmd *cmd) |
| 808 | { |
| 809 | free(cmd->buf); |
| 810 | free(cmd); |
| 811 | } |
| 812 | |
Miklos Szeredi | fff56ab | 2001-11-16 10:12:59 +0000 | [diff] [blame] | 813 | void __fuse_process_cmd(struct fuse *f, struct fuse_cmd *cmd) |
Miklos Szeredi | a181e61 | 2001-11-06 12:03:23 +0000 | [diff] [blame] | 814 | { |
Miklos Szeredi | a181e61 | 2001-11-06 12:03:23 +0000 | [diff] [blame] | 815 | struct fuse_in_header *in = (struct fuse_in_header *) cmd->buf; |
| 816 | void *inarg = cmd->buf + sizeof(struct fuse_in_header); |
| 817 | size_t argsize; |
Miklos Szeredi | fe25def | 2001-12-20 15:38:05 +0000 | [diff] [blame] | 818 | struct fuse_context *ctx = fuse_get_context(f); |
Miklos Szeredi | a181e61 | 2001-11-06 12:03:23 +0000 | [diff] [blame] | 819 | |
Miklos Szeredi | 99ddf0e | 2001-11-25 17:19:59 +0000 | [diff] [blame] | 820 | dec_avail(f); |
Miklos Szeredi | 3323203 | 2001-11-19 17:55:51 +0000 | [diff] [blame] | 821 | |
Miklos Szeredi | c0938ea | 2001-11-07 12:35:06 +0000 | [diff] [blame] | 822 | if((f->flags & FUSE_DEBUG)) { |
| 823 | printf("unique: %i, opcode: %i, ino: %li, insize: %i\n", in->unique, |
| 824 | in->opcode, in->ino, cmd->buflen); |
| 825 | fflush(stdout); |
| 826 | } |
Miklos Szeredi | fe25def | 2001-12-20 15:38:05 +0000 | [diff] [blame] | 827 | |
| 828 | ctx->uid = in->uid; |
| 829 | ctx->gid = in->gid; |
Miklos Szeredi | a181e61 | 2001-11-06 12:03:23 +0000 | [diff] [blame] | 830 | |
| 831 | argsize = cmd->buflen - sizeof(struct fuse_in_header); |
| 832 | |
| 833 | switch(in->opcode) { |
| 834 | case FUSE_LOOKUP: |
| 835 | do_lookup(f, in, (char *) inarg); |
| 836 | break; |
| 837 | |
Miklos Szeredi | a181e61 | 2001-11-06 12:03:23 +0000 | [diff] [blame] | 838 | case FUSE_GETATTR: |
| 839 | do_getattr(f, in); |
| 840 | break; |
| 841 | |
| 842 | case FUSE_SETATTR: |
| 843 | do_setattr(f, in, (struct fuse_setattr_in *) inarg); |
| 844 | break; |
| 845 | |
| 846 | case FUSE_READLINK: |
| 847 | do_readlink(f, in); |
| 848 | break; |
| 849 | |
| 850 | case FUSE_GETDIR: |
| 851 | do_getdir(f, in); |
| 852 | break; |
| 853 | |
| 854 | case FUSE_MKNOD: |
| 855 | do_mknod(f, in, (struct fuse_mknod_in *) inarg); |
| 856 | break; |
| 857 | |
| 858 | case FUSE_MKDIR: |
| 859 | do_mkdir(f, in, (struct fuse_mkdir_in *) inarg); |
| 860 | break; |
| 861 | |
| 862 | case FUSE_UNLINK: |
| 863 | case FUSE_RMDIR: |
| 864 | do_remove(f, in, (char *) inarg); |
| 865 | break; |
| 866 | |
| 867 | case FUSE_SYMLINK: |
| 868 | do_symlink(f, in, (char *) inarg, |
| 869 | ((char *) inarg) + strlen((char *) inarg) + 1); |
| 870 | break; |
| 871 | |
| 872 | case FUSE_RENAME: |
| 873 | do_rename(f, in, (struct fuse_rename_in *) inarg); |
| 874 | break; |
| 875 | |
| 876 | case FUSE_LINK: |
| 877 | do_link(f, in, (struct fuse_link_in *) inarg); |
| 878 | break; |
| 879 | |
| 880 | case FUSE_OPEN: |
| 881 | do_open(f, in, (struct fuse_open_in *) inarg); |
| 882 | break; |
| 883 | |
| 884 | case FUSE_READ: |
| 885 | do_read(f, in, (struct fuse_read_in *) inarg); |
| 886 | break; |
| 887 | |
| 888 | case FUSE_WRITE: |
| 889 | do_write(f, in, (struct fuse_write_in *) inarg); |
| 890 | break; |
| 891 | |
Mark Glines | d84b39a | 2002-01-07 16:32:02 +0000 | [diff] [blame] | 892 | case FUSE_STATFS: |
| 893 | do_statfs(f, in); |
| 894 | break; |
| 895 | |
Miklos Szeredi | a181e61 | 2001-11-06 12:03:23 +0000 | [diff] [blame] | 896 | default: |
| 897 | fprintf(stderr, "Operation %i not implemented\n", in->opcode); |
Miklos Szeredi | 4369643 | 2001-11-18 19:15:05 +0000 | [diff] [blame] | 898 | send_reply(f, in, -ENOSYS, NULL, 0); |
Miklos Szeredi | a181e61 | 2001-11-06 12:03:23 +0000 | [diff] [blame] | 899 | } |
Miklos Szeredi | 4369643 | 2001-11-18 19:15:05 +0000 | [diff] [blame] | 900 | |
| 901 | free_cmd(cmd); |
Miklos Szeredi | a181e61 | 2001-11-06 12:03:23 +0000 | [diff] [blame] | 902 | } |
| 903 | |
Miklos Szeredi | fff56ab | 2001-11-16 10:12:59 +0000 | [diff] [blame] | 904 | struct fuse_cmd *__fuse_read_cmd(struct fuse *f) |
Miklos Szeredi | 2df1c04 | 2001-11-06 15:07:17 +0000 | [diff] [blame] | 905 | { |
Miklos Szeredi | fff56ab | 2001-11-16 10:12:59 +0000 | [diff] [blame] | 906 | ssize_t res; |
Miklos Szeredi | fff56ab | 2001-11-16 10:12:59 +0000 | [diff] [blame] | 907 | struct fuse_cmd *cmd; |
Miklos Szeredi | 99ddf0e | 2001-11-25 17:19:59 +0000 | [diff] [blame] | 908 | struct fuse_in_header *in; |
| 909 | void *inarg; |
Miklos Szeredi | fff56ab | 2001-11-16 10:12:59 +0000 | [diff] [blame] | 910 | |
Miklos Szeredi | 4369643 | 2001-11-18 19:15:05 +0000 | [diff] [blame] | 911 | cmd = (struct fuse_cmd *) malloc(sizeof(struct fuse_cmd)); |
| 912 | cmd->buf = (char *) malloc(FUSE_MAX_IN); |
Miklos Szeredi | 99ddf0e | 2001-11-25 17:19:59 +0000 | [diff] [blame] | 913 | in = (struct fuse_in_header *) cmd->buf; |
| 914 | inarg = cmd->buf + sizeof(struct fuse_in_header); |
Miklos Szeredi | 4369643 | 2001-11-18 19:15:05 +0000 | [diff] [blame] | 915 | |
Miklos Szeredi | 99ddf0e | 2001-11-25 17:19:59 +0000 | [diff] [blame] | 916 | do { |
| 917 | res = read(f->fd, cmd->buf, FUSE_MAX_IN); |
| 918 | if(res == -1) { |
| 919 | /* ENODEV means we got unmounted, so we silenty return failure */ |
| 920 | if(errno != ENODEV) { |
| 921 | perror("fuse: reading device"); |
| 922 | /* BAD... This will happen again */ |
| 923 | } |
| 924 | free_cmd(cmd); |
| 925 | return NULL; |
Miklos Szeredi | 9624998 | 2001-11-21 12:21:19 +0000 | [diff] [blame] | 926 | } |
Miklos Szeredi | 99ddf0e | 2001-11-25 17:19:59 +0000 | [diff] [blame] | 927 | if((size_t) res < sizeof(struct fuse_in_header)) { |
| 928 | fprintf(stderr, "short read on fuse device\n"); |
| 929 | /* Cannot happen */ |
| 930 | free_cmd(cmd); |
| 931 | return NULL; |
| 932 | } |
| 933 | cmd->buflen = res; |
| 934 | |
| 935 | /* Forget is special, it can be done without messing with threads. */ |
| 936 | if(in->opcode == FUSE_FORGET) |
| 937 | do_forget(f, in, (struct fuse_forget_in *) inarg); |
| 938 | |
| 939 | } while(in->opcode == FUSE_FORGET); |
| 940 | |
Miklos Szeredi | fff56ab | 2001-11-16 10:12:59 +0000 | [diff] [blame] | 941 | return cmd; |
Miklos Szeredi | 2df1c04 | 2001-11-06 15:07:17 +0000 | [diff] [blame] | 942 | } |
| 943 | |
Miklos Szeredi | fff56ab | 2001-11-16 10:12:59 +0000 | [diff] [blame] | 944 | |
Miklos Szeredi | 85c74fc | 2001-10-28 19:44:14 +0000 | [diff] [blame] | 945 | void fuse_loop(struct fuse *f) |
| 946 | { |
Miklos Szeredi | 85c74fc | 2001-10-28 19:44:14 +0000 | [diff] [blame] | 947 | while(1) { |
Miklos Szeredi | fff56ab | 2001-11-16 10:12:59 +0000 | [diff] [blame] | 948 | struct fuse_cmd *cmd = __fuse_read_cmd(f); |
| 949 | if(cmd == NULL) |
Miklos Szeredi | 0a7077f | 2001-11-11 18:20:17 +0000 | [diff] [blame] | 950 | exit(1); |
Miklos Szeredi | 85c74fc | 2001-10-28 19:44:14 +0000 | [diff] [blame] | 951 | |
Miklos Szeredi | fff56ab | 2001-11-16 10:12:59 +0000 | [diff] [blame] | 952 | __fuse_process_cmd(f, cmd); |
Miklos Szeredi | 85c74fc | 2001-10-28 19:44:14 +0000 | [diff] [blame] | 953 | } |
| 954 | } |
| 955 | |
Miklos Szeredi | 2e50d43 | 2001-12-20 12:17:25 +0000 | [diff] [blame] | 956 | struct fuse_context *fuse_get_context(struct fuse *f) |
| 957 | { |
| 958 | if(f->getcontext) |
| 959 | return f->getcontext(f); |
| 960 | else |
| 961 | return &f->context; |
| 962 | } |
| 963 | |
| 964 | 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] | 965 | { |
Miklos Szeredi | 97c61e9 | 2001-11-07 12:09:43 +0000 | [diff] [blame] | 966 | struct fuse *f; |
| 967 | struct node *root; |
Miklos Szeredi | 85c74fc | 2001-10-28 19:44:14 +0000 | [diff] [blame] | 968 | |
Miklos Szeredi | 97c61e9 | 2001-11-07 12:09:43 +0000 | [diff] [blame] | 969 | f = (struct fuse *) calloc(1, sizeof(struct fuse)); |
Miklos Szeredi | 2df1c04 | 2001-11-06 15:07:17 +0000 | [diff] [blame] | 970 | |
Miklos Szeredi | a181e61 | 2001-11-06 12:03:23 +0000 | [diff] [blame] | 971 | f->flags = flags; |
Miklos Szeredi | 8cffdb9 | 2001-11-09 14:49:18 +0000 | [diff] [blame] | 972 | f->fd = fd; |
Miklos Szeredi | 97c61e9 | 2001-11-07 12:09:43 +0000 | [diff] [blame] | 973 | f->ctr = 0; |
Miklos Szeredi | fff56ab | 2001-11-16 10:12:59 +0000 | [diff] [blame] | 974 | /* FIXME: Dynamic hash table */ |
Miklos Szeredi | 97c61e9 | 2001-11-07 12:09:43 +0000 | [diff] [blame] | 975 | f->name_table_size = 14057; |
| 976 | f->name_table = (struct node **) |
| 977 | calloc(1, sizeof(struct node *) * f->name_table_size); |
| 978 | f->ino_table_size = 14057; |
| 979 | f->ino_table = (struct node **) |
| 980 | calloc(1, sizeof(struct node *) * f->ino_table_size); |
Miklos Szeredi | a181e61 | 2001-11-06 12:03:23 +0000 | [diff] [blame] | 981 | pthread_mutex_init(&f->lock, NULL); |
Miklos Szeredi | 3323203 | 2001-11-19 17:55:51 +0000 | [diff] [blame] | 982 | f->numworker = 0; |
| 983 | f->numavail = 0; |
Miklos Szeredi | 2e50d43 | 2001-12-20 12:17:25 +0000 | [diff] [blame] | 984 | f->op = *op; |
| 985 | f->getcontext = NULL; |
| 986 | f->context.uid = 0; |
| 987 | f->context.gid = 0; |
Miklos Szeredi | 85c74fc | 2001-10-28 19:44:14 +0000 | [diff] [blame] | 988 | |
Miklos Szeredi | 97c61e9 | 2001-11-07 12:09:43 +0000 | [diff] [blame] | 989 | root = (struct node *) calloc(1, sizeof(struct node)); |
Miklos Szeredi | 8cffdb9 | 2001-11-09 14:49:18 +0000 | [diff] [blame] | 990 | root->mode = 0; |
Miklos Szeredi | 97c61e9 | 2001-11-07 12:09:43 +0000 | [diff] [blame] | 991 | root->rdev = 0; |
| 992 | root->name = strdup("/"); |
| 993 | root->parent = 0; |
| 994 | hash_ino(f, root, FUSE_ROOT_INO); |
| 995 | |
Miklos Szeredi | 85c74fc | 2001-10-28 19:44:14 +0000 | [diff] [blame] | 996 | return f; |
| 997 | } |
| 998 | |
Miklos Szeredi | 85c74fc | 2001-10-28 19:44:14 +0000 | [diff] [blame] | 999 | void fuse_destroy(struct fuse *f) |
| 1000 | { |
Miklos Szeredi | 97c61e9 | 2001-11-07 12:09:43 +0000 | [diff] [blame] | 1001 | size_t i; |
Miklos Szeredi | 97c61e9 | 2001-11-07 12:09:43 +0000 | [diff] [blame] | 1002 | for(i = 0; i < f->ino_table_size; i++) { |
| 1003 | struct node *node; |
| 1004 | struct node *next; |
| 1005 | for(node = f->ino_table[i]; node != NULL; node = next) { |
| 1006 | next = node->ino_next; |
| 1007 | free_node(node); |
| 1008 | } |
| 1009 | } |
| 1010 | free(f->ino_table); |
| 1011 | free(f->name_table); |
Miklos Szeredi | a181e61 | 2001-11-06 12:03:23 +0000 | [diff] [blame] | 1012 | pthread_mutex_destroy(&f->lock); |
Miklos Szeredi | 97c61e9 | 2001-11-07 12:09:43 +0000 | [diff] [blame] | 1013 | free(f); |
Miklos Szeredi | 85c74fc | 2001-10-28 19:44:14 +0000 | [diff] [blame] | 1014 | } |