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) { |
Miklos Szeredi | 3ed8423 | 2004-03-30 15:17:26 +0000 | [diff] [blame^] | 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"; |
| 46 | case FUSE_FSYNC: return "FSYNC"; |
| 47 | case FUSE_SETXATTR: return "SETXATTR"; |
| 48 | case FUSE_GETXATTR: return "GETXATTR"; |
| 49 | case FUSE_LISTXATTR: return "LISTXATTR"; |
| 50 | case FUSE_REMOVEXATTR: return "REMOVEXATTR"; |
Miklos Szeredi | c8ba237 | 2002-12-10 12:26:00 +0000 | [diff] [blame] | 51 | default: return "???"; |
| 52 | } |
| 53 | } |
| 54 | |
Miklos Szeredi | 99ddf0e | 2001-11-25 17:19:59 +0000 | [diff] [blame] | 55 | static inline void inc_avail(struct fuse *f) |
| 56 | { |
| 57 | pthread_mutex_lock(&f->lock); |
| 58 | f->numavail ++; |
| 59 | pthread_mutex_unlock(&f->lock); |
| 60 | } |
| 61 | |
| 62 | static inline void dec_avail(struct fuse *f) |
| 63 | { |
| 64 | pthread_mutex_lock(&f->lock); |
| 65 | f->numavail --; |
| 66 | pthread_mutex_unlock(&f->lock); |
| 67 | } |
| 68 | |
Miklos Szeredi | 97c61e9 | 2001-11-07 12:09:43 +0000 | [diff] [blame] | 69 | static struct node *__get_node(struct fuse *f, fino_t ino) |
Miklos Szeredi | a181e61 | 2001-11-06 12:03:23 +0000 | [diff] [blame] | 70 | { |
Miklos Szeredi | 97c61e9 | 2001-11-07 12:09:43 +0000 | [diff] [blame] | 71 | size_t hash = ino % f->ino_table_size; |
| 72 | struct node *node; |
| 73 | |
| 74 | for(node = f->ino_table[hash]; node != NULL; node = node->ino_next) |
| 75 | if(node->ino == ino) |
| 76 | return node; |
| 77 | |
| 78 | return NULL; |
Miklos Szeredi | a181e61 | 2001-11-06 12:03:23 +0000 | [diff] [blame] | 79 | } |
| 80 | |
Miklos Szeredi | 97c61e9 | 2001-11-07 12:09:43 +0000 | [diff] [blame] | 81 | static struct node *get_node(struct fuse *f, fino_t ino) |
Miklos Szeredi | a181e61 | 2001-11-06 12:03:23 +0000 | [diff] [blame] | 82 | { |
Miklos Szeredi | 97c61e9 | 2001-11-07 12:09:43 +0000 | [diff] [blame] | 83 | struct node *node = __get_node(f, ino); |
| 84 | if(node != NULL) |
| 85 | return node; |
| 86 | |
| 87 | fprintf(stderr, "fuse internal error: inode %lu not found\n", ino); |
| 88 | abort(); |
Miklos Szeredi | a181e61 | 2001-11-06 12:03:23 +0000 | [diff] [blame] | 89 | } |
| 90 | |
Miklos Szeredi | 76f6578 | 2004-02-19 16:55:40 +0000 | [diff] [blame] | 91 | static void hash_ino(struct fuse *f, struct node *node) |
Miklos Szeredi | 85c74fc | 2001-10-28 19:44:14 +0000 | [diff] [blame] | 92 | { |
Miklos Szeredi | 76f6578 | 2004-02-19 16:55:40 +0000 | [diff] [blame] | 93 | size_t hash = node->ino % f->ino_table_size; |
Miklos Szeredi | 97c61e9 | 2001-11-07 12:09:43 +0000 | [diff] [blame] | 94 | node->ino_next = f->ino_table[hash]; |
| 95 | f->ino_table[hash] = node; |
Miklos Szeredi | 85c74fc | 2001-10-28 19:44:14 +0000 | [diff] [blame] | 96 | } |
| 97 | |
Miklos Szeredi | 97c61e9 | 2001-11-07 12:09:43 +0000 | [diff] [blame] | 98 | static void unhash_ino(struct fuse *f, struct node *node) |
Miklos Szeredi | 85c74fc | 2001-10-28 19:44:14 +0000 | [diff] [blame] | 99 | { |
Miklos Szeredi | 97c61e9 | 2001-11-07 12:09:43 +0000 | [diff] [blame] | 100 | size_t hash = node->ino % f->ino_table_size; |
| 101 | struct node **nodep = &f->ino_table[hash]; |
| 102 | |
| 103 | for(; *nodep != NULL; nodep = &(*nodep)->ino_next) |
| 104 | if(*nodep == node) { |
| 105 | *nodep = node->ino_next; |
| 106 | return; |
| 107 | } |
Miklos Szeredi | 85c74fc | 2001-10-28 19:44:14 +0000 | [diff] [blame] | 108 | } |
| 109 | |
Miklos Szeredi | 97c61e9 | 2001-11-07 12:09:43 +0000 | [diff] [blame] | 110 | static fino_t next_ino(struct fuse *f) |
| 111 | { |
Miklos Szeredi | 76f6578 | 2004-02-19 16:55:40 +0000 | [diff] [blame] | 112 | do { |
| 113 | f->ctr++; |
| 114 | if(!f->ctr) |
| 115 | f->generation ++; |
| 116 | } while(f->ctr == 0 || __get_node(f, f->ctr) != NULL); |
Miklos Szeredi | 97c61e9 | 2001-11-07 12:09:43 +0000 | [diff] [blame] | 117 | return f->ctr; |
| 118 | } |
| 119 | |
| 120 | static void free_node(struct node *node) |
| 121 | { |
| 122 | free(node->name); |
| 123 | free(node); |
| 124 | } |
| 125 | |
| 126 | static unsigned int name_hash(struct fuse *f, fino_t parent, const char *name) |
| 127 | { |
| 128 | unsigned int hash = *name; |
| 129 | |
| 130 | if(hash) |
| 131 | for(name += 1; *name != '\0'; name++) |
| 132 | hash = (hash << 5) - hash + *name; |
| 133 | |
| 134 | return (hash + parent) % f->name_table_size; |
Miklos Szeredi | 85c74fc | 2001-10-28 19:44:14 +0000 | [diff] [blame] | 135 | } |
| 136 | |
Miklos Szeredi | 19dff1b | 2001-10-30 15:06:52 +0000 | [diff] [blame] | 137 | static struct node *lookup_node(struct fuse *f, fino_t parent, |
| 138 | const char *name) |
| 139 | { |
Miklos Szeredi | 97c61e9 | 2001-11-07 12:09:43 +0000 | [diff] [blame] | 140 | size_t hash = name_hash(f, parent, name); |
| 141 | struct node *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 | for(node = f->name_table[hash]; node != NULL; node = node->name_next) |
| 144 | if(node->parent == parent && strcmp(node->name, name) == 0) |
| 145 | return node; |
Miklos Szeredi | 19dff1b | 2001-10-30 15:06:52 +0000 | [diff] [blame] | 146 | |
Miklos Szeredi | 97c61e9 | 2001-11-07 12:09:43 +0000 | [diff] [blame] | 147 | return NULL; |
Miklos Szeredi | 19dff1b | 2001-10-30 15:06:52 +0000 | [diff] [blame] | 148 | } |
| 149 | |
Miklos Szeredi | 97c61e9 | 2001-11-07 12:09:43 +0000 | [diff] [blame] | 150 | 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] | 151 | const char *name) |
Miklos Szeredi | 5e18348 | 2001-10-31 14:52:35 +0000 | [diff] [blame] | 152 | { |
Miklos Szeredi | 97c61e9 | 2001-11-07 12:09:43 +0000 | [diff] [blame] | 153 | size_t hash = name_hash(f, parent, name); |
Miklos Szeredi | a181e61 | 2001-11-06 12:03:23 +0000 | [diff] [blame] | 154 | node->parent = parent; |
Miklos Szeredi | 97c61e9 | 2001-11-07 12:09:43 +0000 | [diff] [blame] | 155 | node->name = strdup(name); |
| 156 | node->name_next = f->name_table[hash]; |
| 157 | f->name_table[hash] = node; |
Miklos Szeredi | 5e18348 | 2001-10-31 14:52:35 +0000 | [diff] [blame] | 158 | } |
| 159 | |
Miklos Szeredi | 97c61e9 | 2001-11-07 12:09:43 +0000 | [diff] [blame] | 160 | static void unhash_name(struct fuse *f, struct node *node) |
Miklos Szeredi | a181e61 | 2001-11-06 12:03:23 +0000 | [diff] [blame] | 161 | { |
| 162 | if(node->name != NULL) { |
Miklos Szeredi | 97c61e9 | 2001-11-07 12:09:43 +0000 | [diff] [blame] | 163 | size_t hash = name_hash(f, node->parent, node->name); |
| 164 | struct node **nodep = &f->name_table[hash]; |
| 165 | |
| 166 | for(; *nodep != NULL; nodep = &(*nodep)->name_next) |
| 167 | if(*nodep == node) { |
| 168 | *nodep = node->name_next; |
| 169 | node->name_next = NULL; |
| 170 | free(node->name); |
| 171 | node->name = NULL; |
| 172 | node->parent = 0; |
| 173 | return; |
| 174 | } |
| 175 | fprintf(stderr, "fuse internal error: unable to unhash node: %lu\n", |
| 176 | node->ino); |
| 177 | abort(); |
Miklos Szeredi | a181e61 | 2001-11-06 12:03:23 +0000 | [diff] [blame] | 178 | } |
| 179 | } |
| 180 | |
Miklos Szeredi | 76f6578 | 2004-02-19 16:55:40 +0000 | [diff] [blame] | 181 | static struct node *find_node(struct fuse *f, fino_t parent, char *name, |
| 182 | struct fuse_attr *attr, int version) |
Miklos Szeredi | 5e18348 | 2001-10-31 14:52:35 +0000 | [diff] [blame] | 183 | { |
| 184 | struct node *node; |
Miklos Szeredi | a181e61 | 2001-11-06 12:03:23 +0000 | [diff] [blame] | 185 | int mode = attr->mode & S_IFMT; |
| 186 | int rdev = 0; |
| 187 | |
| 188 | if(S_ISCHR(mode) || S_ISBLK(mode)) |
| 189 | rdev = attr->rdev; |
Miklos Szeredi | 5e18348 | 2001-10-31 14:52:35 +0000 | [diff] [blame] | 190 | |
Miklos Szeredi | a181e61 | 2001-11-06 12:03:23 +0000 | [diff] [blame] | 191 | pthread_mutex_lock(&f->lock); |
Miklos Szeredi | 5e18348 | 2001-10-31 14:52:35 +0000 | [diff] [blame] | 192 | node = lookup_node(f, parent, name); |
| 193 | if(node != NULL) { |
Miklos Szeredi | a181e61 | 2001-11-06 12:03:23 +0000 | [diff] [blame] | 194 | if(node->mode == mode && node->rdev == rdev) |
| 195 | goto out; |
| 196 | |
Miklos Szeredi | 97c61e9 | 2001-11-07 12:09:43 +0000 | [diff] [blame] | 197 | unhash_name(f, node); |
Miklos Szeredi | 5e18348 | 2001-10-31 14:52:35 +0000 | [diff] [blame] | 198 | } |
| 199 | |
Miklos Szeredi | 97c61e9 | 2001-11-07 12:09:43 +0000 | [diff] [blame] | 200 | node = (struct node *) calloc(1, sizeof(struct node)); |
Miklos Szeredi | a181e61 | 2001-11-06 12:03:23 +0000 | [diff] [blame] | 201 | node->mode = mode; |
Miklos Szeredi | 97c61e9 | 2001-11-07 12:09:43 +0000 | [diff] [blame] | 202 | node->rdev = rdev; |
Miklos Szeredi | 76f6578 | 2004-02-19 16:55:40 +0000 | [diff] [blame] | 203 | node->ino = next_ino(f); |
| 204 | node->generation = f->generation; |
| 205 | hash_ino(f, node); |
Miklos Szeredi | 97c61e9 | 2001-11-07 12:09:43 +0000 | [diff] [blame] | 206 | hash_name(f, node, parent, name); |
Miklos Szeredi | a181e61 | 2001-11-06 12:03:23 +0000 | [diff] [blame] | 207 | |
| 208 | out: |
| 209 | node->version = version; |
| 210 | pthread_mutex_unlock(&f->lock); |
Miklos Szeredi | 76f6578 | 2004-02-19 16:55:40 +0000 | [diff] [blame] | 211 | return node; |
Miklos Szeredi | 5e18348 | 2001-10-31 14:52:35 +0000 | [diff] [blame] | 212 | } |
| 213 | |
Miklos Szeredi | 97c61e9 | 2001-11-07 12:09:43 +0000 | [diff] [blame] | 214 | static char *add_name(char *buf, char *s, const char *name) |
Miklos Szeredi | 85c74fc | 2001-10-28 19:44:14 +0000 | [diff] [blame] | 215 | { |
Miklos Szeredi | 97c61e9 | 2001-11-07 12:09:43 +0000 | [diff] [blame] | 216 | size_t len = strlen(name); |
| 217 | s -= len; |
| 218 | if(s <= buf) { |
| 219 | fprintf(stderr, "fuse: path too long: ...%s\n", s + len); |
| 220 | return NULL; |
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 | strncpy(s, name, len); |
| 223 | s--; |
| 224 | *s = '/'; |
Miklos Szeredi | 85c74fc | 2001-10-28 19:44:14 +0000 | [diff] [blame] | 225 | |
Miklos Szeredi | 97c61e9 | 2001-11-07 12:09:43 +0000 | [diff] [blame] | 226 | return s; |
Miklos Szeredi | 85c74fc | 2001-10-28 19:44:14 +0000 | [diff] [blame] | 227 | } |
| 228 | |
Miklos Szeredi | a181e61 | 2001-11-06 12:03:23 +0000 | [diff] [blame] | 229 | 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] | 230 | { |
Miklos Szeredi | 97c61e9 | 2001-11-07 12:09:43 +0000 | [diff] [blame] | 231 | char buf[FUSE_MAX_PATH]; |
| 232 | char *s = buf + FUSE_MAX_PATH - 1; |
| 233 | struct node *node; |
Miklos Szeredi | 5e18348 | 2001-10-31 14:52:35 +0000 | [diff] [blame] | 234 | |
Miklos Szeredi | 97c61e9 | 2001-11-07 12:09:43 +0000 | [diff] [blame] | 235 | *s = '\0'; |
Miklos Szeredi | a181e61 | 2001-11-06 12:03:23 +0000 | [diff] [blame] | 236 | |
Miklos Szeredi | 97c61e9 | 2001-11-07 12:09:43 +0000 | [diff] [blame] | 237 | if(name != NULL) { |
| 238 | s = add_name(buf, s, name); |
| 239 | if(s == NULL) |
| 240 | return NULL; |
| 241 | } |
| 242 | |
| 243 | pthread_mutex_lock(&f->lock); |
| 244 | for(node = get_node(f, ino); node->ino != FUSE_ROOT_INO; |
| 245 | node = get_node(f, node->parent)) { |
| 246 | if(node->name == NULL) { |
| 247 | s = NULL; |
| 248 | break; |
| 249 | } |
| 250 | |
| 251 | s = add_name(buf, s, node->name); |
| 252 | if(s == NULL) |
| 253 | break; |
| 254 | } |
| 255 | pthread_mutex_unlock(&f->lock); |
| 256 | |
| 257 | if(s == NULL) |
Miklos Szeredi | 5e18348 | 2001-10-31 14:52:35 +0000 | [diff] [blame] | 258 | return NULL; |
Miklos Szeredi | 97c61e9 | 2001-11-07 12:09:43 +0000 | [diff] [blame] | 259 | else if(*s == '\0') |
| 260 | return strdup("/"); |
| 261 | else |
| 262 | return strdup(s); |
| 263 | } |
Miklos Szeredi | a181e61 | 2001-11-06 12:03:23 +0000 | [diff] [blame] | 264 | |
Miklos Szeredi | 97c61e9 | 2001-11-07 12:09:43 +0000 | [diff] [blame] | 265 | static char *get_path(struct fuse *f, fino_t ino) |
| 266 | { |
| 267 | return get_path_name(f, ino, NULL); |
Miklos Szeredi | b483c93 | 2001-10-29 14:57:57 +0000 | [diff] [blame] | 268 | } |
| 269 | |
Miklos Szeredi | a181e61 | 2001-11-06 12:03:23 +0000 | [diff] [blame] | 270 | static void destroy_node(struct fuse *f, fino_t ino, int version) |
Miklos Szeredi | 85c74fc | 2001-10-28 19:44:14 +0000 | [diff] [blame] | 271 | { |
Miklos Szeredi | a181e61 | 2001-11-06 12:03:23 +0000 | [diff] [blame] | 272 | struct node *node; |
| 273 | |
| 274 | pthread_mutex_lock(&f->lock); |
Miklos Szeredi | 97c61e9 | 2001-11-07 12:09:43 +0000 | [diff] [blame] | 275 | node = get_node(f, ino); |
Miklos Szeredi | 39f2867 | 2001-11-14 14:52:54 +0000 | [diff] [blame] | 276 | if(node->version == version && ino != FUSE_ROOT_INO) { |
Miklos Szeredi | 97c61e9 | 2001-11-07 12:09:43 +0000 | [diff] [blame] | 277 | unhash_name(f, node); |
| 278 | unhash_ino(f, node); |
Miklos Szeredi | a181e61 | 2001-11-06 12:03:23 +0000 | [diff] [blame] | 279 | free_node(node); |
| 280 | } |
| 281 | pthread_mutex_unlock(&f->lock); |
| 282 | |
Miklos Szeredi | 85c74fc | 2001-10-28 19:44:14 +0000 | [diff] [blame] | 283 | } |
| 284 | |
Miklos Szeredi | 5e18348 | 2001-10-31 14:52:35 +0000 | [diff] [blame] | 285 | static void remove_node(struct fuse *f, fino_t dir, const char *name) |
| 286 | { |
Miklos Szeredi | a181e61 | 2001-11-06 12:03:23 +0000 | [diff] [blame] | 287 | struct node *node; |
| 288 | |
| 289 | pthread_mutex_lock(&f->lock); |
| 290 | node = lookup_node(f, dir, name); |
Miklos Szeredi | 97c61e9 | 2001-11-07 12:09:43 +0000 | [diff] [blame] | 291 | if(node == NULL) { |
| 292 | fprintf(stderr, "fuse internal error: unable to remove node %lu/%s\n", |
| 293 | dir, name); |
| 294 | abort(); |
| 295 | } |
| 296 | unhash_name(f, node); |
Miklos Szeredi | a181e61 | 2001-11-06 12:03:23 +0000 | [diff] [blame] | 297 | pthread_mutex_unlock(&f->lock); |
Miklos Szeredi | 5e18348 | 2001-10-31 14:52:35 +0000 | [diff] [blame] | 298 | } |
| 299 | |
Miklos Szeredi | 19dff1b | 2001-10-30 15:06:52 +0000 | [diff] [blame] | 300 | static void rename_node(struct fuse *f, fino_t olddir, const char *oldname, |
| 301 | fino_t newdir, const char *newname) |
| 302 | { |
Miklos Szeredi | a181e61 | 2001-11-06 12:03:23 +0000 | [diff] [blame] | 303 | struct node *node; |
| 304 | struct node *newnode; |
| 305 | |
| 306 | pthread_mutex_lock(&f->lock); |
| 307 | node = lookup_node(f, olddir, oldname); |
| 308 | newnode = lookup_node(f, newdir, newname); |
Miklos Szeredi | 97c61e9 | 2001-11-07 12:09:43 +0000 | [diff] [blame] | 309 | if(node == NULL) { |
| 310 | fprintf(stderr, "fuse internal error: unable to rename node %lu/%s\n", |
| 311 | olddir, oldname); |
| 312 | abort(); |
| 313 | } |
Miklos Szeredi | 19dff1b | 2001-10-30 15:06:52 +0000 | [diff] [blame] | 314 | |
Miklos Szeredi | 19dff1b | 2001-10-30 15:06:52 +0000 | [diff] [blame] | 315 | if(newnode != NULL) |
Miklos Szeredi | 97c61e9 | 2001-11-07 12:09:43 +0000 | [diff] [blame] | 316 | unhash_name(f, newnode); |
Miklos Szeredi | 19dff1b | 2001-10-30 15:06:52 +0000 | [diff] [blame] | 317 | |
Miklos Szeredi | 97c61e9 | 2001-11-07 12:09:43 +0000 | [diff] [blame] | 318 | unhash_name(f, node); |
| 319 | hash_name(f, node, newdir, newname); |
Miklos Szeredi | a181e61 | 2001-11-06 12:03:23 +0000 | [diff] [blame] | 320 | pthread_mutex_unlock(&f->lock); |
Miklos Szeredi | 19dff1b | 2001-10-30 15:06:52 +0000 | [diff] [blame] | 321 | } |
| 322 | |
Miklos Szeredi | 85c74fc | 2001-10-28 19:44:14 +0000 | [diff] [blame] | 323 | static void convert_stat(struct stat *stbuf, struct fuse_attr *attr) |
| 324 | { |
Miklos Szeredi | b595861 | 2004-02-20 14:10:49 +0000 | [diff] [blame] | 325 | attr->mode = stbuf->st_mode; |
| 326 | attr->nlink = stbuf->st_nlink; |
| 327 | attr->uid = stbuf->st_uid; |
| 328 | attr->gid = stbuf->st_gid; |
| 329 | attr->rdev = stbuf->st_rdev; |
| 330 | attr->size = stbuf->st_size; |
| 331 | attr->blocks = stbuf->st_blocks; |
| 332 | attr->atime = stbuf->st_atime; |
| 333 | attr->atimensec = stbuf->st_atim.tv_nsec; |
| 334 | attr->mtime = stbuf->st_mtime; |
| 335 | attr->mtimensec = stbuf->st_mtim.tv_nsec; |
| 336 | attr->ctime = stbuf->st_ctime; |
| 337 | attr->ctimensec = stbuf->st_ctim.tv_nsec; |
Miklos Szeredi | 85c74fc | 2001-10-28 19:44:14 +0000 | [diff] [blame] | 338 | } |
| 339 | |
Miklos Szeredi | a181e61 | 2001-11-06 12:03:23 +0000 | [diff] [blame] | 340 | static int fill_dir(struct fuse_dirhandle *dh, char *name, int type) |
Miklos Szeredi | 85c74fc | 2001-10-28 19:44:14 +0000 | [diff] [blame] | 341 | { |
| 342 | struct fuse_dirent dirent; |
| 343 | size_t reclen; |
| 344 | size_t res; |
| 345 | |
Miklos Szeredi | 4369643 | 2001-11-18 19:15:05 +0000 | [diff] [blame] | 346 | dirent.ino = (unsigned long) -1; |
Miklos Szeredi | 85c74fc | 2001-10-28 19:44:14 +0000 | [diff] [blame] | 347 | dirent.namelen = strlen(name); |
| 348 | strncpy(dirent.name, name, sizeof(dirent.name)); |
| 349 | dirent.type = type; |
| 350 | reclen = FUSE_DIRENT_SIZE(&dirent); |
| 351 | res = fwrite(&dirent, reclen, 1, dh->fp); |
| 352 | if(res == 0) { |
Miklos Szeredi | 9624998 | 2001-11-21 12:21:19 +0000 | [diff] [blame] | 353 | perror("fuse: writing directory file"); |
Miklos Szeredi | 85c74fc | 2001-10-28 19:44:14 +0000 | [diff] [blame] | 354 | return -EIO; |
| 355 | } |
| 356 | return 0; |
| 357 | } |
| 358 | |
Miklos Szeredi | 40b9a5a | 2002-12-10 16:09:02 +0000 | [diff] [blame] | 359 | 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] | 360 | { |
| 361 | int res; |
| 362 | |
| 363 | if((f->flags & FUSE_DEBUG)) { |
| 364 | struct fuse_out_header *out = (struct fuse_out_header *) outbuf; |
| 365 | printf(" unique: %i, error: %i (%s), outsize: %i\n", out->unique, |
| 366 | out->error, strerror(-out->error), outsize); |
| 367 | fflush(stdout); |
| 368 | } |
Miklos Szeredi | 99ddf0e | 2001-11-25 17:19:59 +0000 | [diff] [blame] | 369 | |
Miklos Szeredi | 4e71c9f | 2004-02-09 12:05:14 +0000 | [diff] [blame] | 370 | /* This needs to be done before the reply, otherwise the scheduler |
| 371 | could play tricks with us, and only let the counter be increased |
Miklos Szeredi | 99ddf0e | 2001-11-25 17:19:59 +0000 | [diff] [blame] | 372 | long after the operation is done */ |
| 373 | inc_avail(f); |
| 374 | |
Miklos Szeredi | 4369643 | 2001-11-18 19:15:05 +0000 | [diff] [blame] | 375 | res = write(f->fd, outbuf, outsize); |
| 376 | if(res == -1) { |
| 377 | /* ENOENT means the operation was interrupted */ |
Miklos Szeredi | 4e71c9f | 2004-02-09 12:05:14 +0000 | [diff] [blame] | 378 | if(!f->exited && errno != ENOENT) |
Miklos Szeredi | 9624998 | 2001-11-21 12:21:19 +0000 | [diff] [blame] | 379 | perror("fuse: writing device"); |
Miklos Szeredi | 40b9a5a | 2002-12-10 16:09:02 +0000 | [diff] [blame] | 380 | return -errno; |
Miklos Szeredi | 4369643 | 2001-11-18 19:15:05 +0000 | [diff] [blame] | 381 | } |
Miklos Szeredi | 40b9a5a | 2002-12-10 16:09:02 +0000 | [diff] [blame] | 382 | return 0; |
Miklos Szeredi | 4369643 | 2001-11-18 19:15:05 +0000 | [diff] [blame] | 383 | } |
| 384 | |
Miklos Szeredi | 40b9a5a | 2002-12-10 16:09:02 +0000 | [diff] [blame] | 385 | static int send_reply(struct fuse *f, struct fuse_in_header *in, int error, |
| 386 | void *arg, size_t argsize) |
Miklos Szeredi | 85c74fc | 2001-10-28 19:44:14 +0000 | [diff] [blame] | 387 | { |
Miklos Szeredi | 40b9a5a | 2002-12-10 16:09:02 +0000 | [diff] [blame] | 388 | int res; |
Miklos Szeredi | 85c74fc | 2001-10-28 19:44:14 +0000 | [diff] [blame] | 389 | char *outbuf; |
| 390 | size_t outsize; |
| 391 | struct fuse_out_header *out; |
| 392 | |
Miklos Szeredi | 0f48a26 | 2002-12-05 14:23:01 +0000 | [diff] [blame] | 393 | if(error <= -512 || error > 0) { |
| 394 | fprintf(stderr, "fuse: bad error value: %i\n", error); |
Miklos Szeredi | 19dff1b | 2001-10-30 15:06:52 +0000 | [diff] [blame] | 395 | error = -ERANGE; |
Miklos Szeredi | 85c74fc | 2001-10-28 19:44:14 +0000 | [diff] [blame] | 396 | } |
| 397 | |
Miklos Szeredi | 19dff1b | 2001-10-30 15:06:52 +0000 | [diff] [blame] | 398 | if(error) |
Miklos Szeredi | 85c74fc | 2001-10-28 19:44:14 +0000 | [diff] [blame] | 399 | argsize = 0; |
| 400 | |
| 401 | outsize = sizeof(struct fuse_out_header) + argsize; |
Miklos Szeredi | 97c61e9 | 2001-11-07 12:09:43 +0000 | [diff] [blame] | 402 | outbuf = (char *) malloc(outsize); |
Miklos Szeredi | 85c74fc | 2001-10-28 19:44:14 +0000 | [diff] [blame] | 403 | out = (struct fuse_out_header *) outbuf; |
Miklos Szeredi | 0f48a26 | 2002-12-05 14:23:01 +0000 | [diff] [blame] | 404 | memset(out, 0, sizeof(struct fuse_out_header)); |
Miklos Szeredi | 85c74fc | 2001-10-28 19:44:14 +0000 | [diff] [blame] | 405 | out->unique = in->unique; |
Miklos Szeredi | 19dff1b | 2001-10-30 15:06:52 +0000 | [diff] [blame] | 406 | out->error = error; |
Miklos Szeredi | 85c74fc | 2001-10-28 19:44:14 +0000 | [diff] [blame] | 407 | if(argsize != 0) |
| 408 | memcpy(outbuf + sizeof(struct fuse_out_header), arg, argsize); |
| 409 | |
Miklos Szeredi | 40b9a5a | 2002-12-10 16:09:02 +0000 | [diff] [blame] | 410 | res = send_reply_raw(f, outbuf, outsize); |
Miklos Szeredi | 97c61e9 | 2001-11-07 12:09:43 +0000 | [diff] [blame] | 411 | free(outbuf); |
Miklos Szeredi | 40b9a5a | 2002-12-10 16:09:02 +0000 | [diff] [blame] | 412 | |
| 413 | return res; |
Miklos Szeredi | 85c74fc | 2001-10-28 19:44:14 +0000 | [diff] [blame] | 414 | } |
| 415 | |
Miklos Szeredi | 76f6578 | 2004-02-19 16:55:40 +0000 | [diff] [blame] | 416 | 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] | 417 | const char *path, struct fuse_entry_out *arg) |
Miklos Szeredi | 76f6578 | 2004-02-19 16:55:40 +0000 | [diff] [blame] | 418 | { |
| 419 | int res; |
| 420 | struct stat buf; |
| 421 | |
| 422 | res = f->op.getattr(path, &buf); |
| 423 | if(res == 0) { |
| 424 | struct node *node; |
| 425 | |
Miklos Szeredi | 254d5ed | 2004-03-02 11:11:24 +0000 | [diff] [blame] | 426 | memset(arg, 0, sizeof(struct fuse_entry_out)); |
Miklos Szeredi | 76f6578 | 2004-02-19 16:55:40 +0000 | [diff] [blame] | 427 | convert_stat(&buf, &arg->attr); |
| 428 | node = find_node(f, ino, name, &arg->attr, version); |
| 429 | arg->ino = node->ino; |
| 430 | arg->generation = node->generation; |
Miklos Szeredi | 254d5ed | 2004-03-02 11:11:24 +0000 | [diff] [blame] | 431 | arg->entry_valid = ENTRY_REVALIDATE_TIME; |
| 432 | arg->entry_valid_nsec = 0; |
| 433 | arg->attr_valid = ATTR_REVALIDATE_TIME; |
| 434 | arg->attr_valid_nsec = 0; |
Miklos Szeredi | 76f6578 | 2004-02-19 16:55:40 +0000 | [diff] [blame] | 435 | if(f->flags & FUSE_DEBUG) { |
| 436 | printf(" INO: %li\n", arg->ino); |
| 437 | fflush(stdout); |
| 438 | } |
| 439 | } |
| 440 | return res; |
| 441 | } |
| 442 | |
Miklos Szeredi | 85c74fc | 2001-10-28 19:44:14 +0000 | [diff] [blame] | 443 | static void do_lookup(struct fuse *f, struct fuse_in_header *in, char *name) |
| 444 | { |
| 445 | int res; |
Miklos Szeredi | 19dff1b | 2001-10-30 15:06:52 +0000 | [diff] [blame] | 446 | char *path; |
Miklos Szeredi | 254d5ed | 2004-03-02 11:11:24 +0000 | [diff] [blame] | 447 | struct fuse_entry_out arg; |
Miklos Szeredi | 85c74fc | 2001-10-28 19:44:14 +0000 | [diff] [blame] | 448 | |
Miklos Szeredi | 5e18348 | 2001-10-31 14:52:35 +0000 | [diff] [blame] | 449 | res = -ENOENT; |
Miklos Szeredi | a181e61 | 2001-11-06 12:03:23 +0000 | [diff] [blame] | 450 | path = get_path_name(f, in->ino, name); |
Miklos Szeredi | 5e18348 | 2001-10-31 14:52:35 +0000 | [diff] [blame] | 451 | if(path != NULL) { |
Miklos Szeredi | 6ebe234 | 2002-01-06 21:44:16 +0000 | [diff] [blame] | 452 | if(f->flags & FUSE_DEBUG) { |
| 453 | printf("LOOKUP %s\n", path); |
| 454 | fflush(stdout); |
| 455 | } |
Miklos Szeredi | 5e18348 | 2001-10-31 14:52:35 +0000 | [diff] [blame] | 456 | res = -ENOSYS; |
| 457 | if(f->op.getattr) |
Miklos Szeredi | 76f6578 | 2004-02-19 16:55:40 +0000 | [diff] [blame] | 458 | res = lookup_path(f, in->ino, in->unique, name, path, &arg); |
Miklos Szeredi | 97c61e9 | 2001-11-07 12:09:43 +0000 | [diff] [blame] | 459 | free(path); |
Miklos Szeredi | 5e18348 | 2001-10-31 14:52:35 +0000 | [diff] [blame] | 460 | } |
Miklos Szeredi | 85c74fc | 2001-10-28 19:44:14 +0000 | [diff] [blame] | 461 | send_reply(f, in, res, &arg, sizeof(arg)); |
| 462 | } |
| 463 | |
Miklos Szeredi | a181e61 | 2001-11-06 12:03:23 +0000 | [diff] [blame] | 464 | static void do_forget(struct fuse *f, struct fuse_in_header *in, |
| 465 | struct fuse_forget_in *arg) |
Miklos Szeredi | 85c74fc | 2001-10-28 19:44:14 +0000 | [diff] [blame] | 466 | { |
Miklos Szeredi | 4369643 | 2001-11-18 19:15:05 +0000 | [diff] [blame] | 467 | if(f->flags & FUSE_DEBUG) { |
| 468 | printf("FORGET %li/%i\n", in->ino, arg->version); |
| 469 | fflush(stdout); |
| 470 | } |
Miklos Szeredi | a181e61 | 2001-11-06 12:03:23 +0000 | [diff] [blame] | 471 | destroy_node(f, in->ino, arg->version); |
Miklos Szeredi | 85c74fc | 2001-10-28 19:44:14 +0000 | [diff] [blame] | 472 | } |
| 473 | |
| 474 | static void do_getattr(struct fuse *f, struct fuse_in_header *in) |
| 475 | { |
| 476 | int res; |
Miklos Szeredi | 19dff1b | 2001-10-30 15:06:52 +0000 | [diff] [blame] | 477 | char *path; |
| 478 | struct stat buf; |
Miklos Szeredi | 254d5ed | 2004-03-02 11:11:24 +0000 | [diff] [blame] | 479 | struct fuse_attr_out arg; |
Miklos Szeredi | 85c74fc | 2001-10-28 19:44:14 +0000 | [diff] [blame] | 480 | |
Miklos Szeredi | 5e18348 | 2001-10-31 14:52:35 +0000 | [diff] [blame] | 481 | res = -ENOENT; |
Miklos Szeredi | a181e61 | 2001-11-06 12:03:23 +0000 | [diff] [blame] | 482 | path = get_path(f, in->ino); |
Miklos Szeredi | 5e18348 | 2001-10-31 14:52:35 +0000 | [diff] [blame] | 483 | if(path != NULL) { |
| 484 | res = -ENOSYS; |
| 485 | if(f->op.getattr) |
Miklos Szeredi | 0a7077f | 2001-11-11 18:20:17 +0000 | [diff] [blame] | 486 | res = f->op.getattr(path, &buf); |
Miklos Szeredi | 97c61e9 | 2001-11-07 12:09:43 +0000 | [diff] [blame] | 487 | free(path); |
Miklos Szeredi | 5e18348 | 2001-10-31 14:52:35 +0000 | [diff] [blame] | 488 | } |
Miklos Szeredi | 0f48a26 | 2002-12-05 14:23:01 +0000 | [diff] [blame] | 489 | |
| 490 | if(res == 0) { |
Miklos Szeredi | 254d5ed | 2004-03-02 11:11:24 +0000 | [diff] [blame] | 491 | memset(&arg, 0, sizeof(struct fuse_attr_out)); |
| 492 | arg.attr_valid = ATTR_REVALIDATE_TIME; |
| 493 | arg.attr_valid_nsec = 0; |
Miklos Szeredi | 19dff1b | 2001-10-30 15:06:52 +0000 | [diff] [blame] | 494 | convert_stat(&buf, &arg.attr); |
Miklos Szeredi | 0f48a26 | 2002-12-05 14:23:01 +0000 | [diff] [blame] | 495 | } |
Miklos Szeredi | 19dff1b | 2001-10-30 15:06:52 +0000 | [diff] [blame] | 496 | |
Miklos Szeredi | 85c74fc | 2001-10-28 19:44:14 +0000 | [diff] [blame] | 497 | send_reply(f, in, res, &arg, sizeof(arg)); |
| 498 | } |
| 499 | |
Miklos Szeredi | 680a69a | 2001-11-16 13:31:14 +0000 | [diff] [blame] | 500 | 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] | 501 | { |
| 502 | int res; |
| 503 | |
| 504 | res = -ENOSYS; |
| 505 | if(f->op.chmod) |
Miklos Szeredi | 0a7077f | 2001-11-11 18:20:17 +0000 | [diff] [blame] | 506 | res = f->op.chmod(path, attr->mode); |
Miklos Szeredi | f3ea83b | 2001-11-07 14:55:16 +0000 | [diff] [blame] | 507 | |
| 508 | return res; |
| 509 | } |
| 510 | |
Miklos Szeredi | 680a69a | 2001-11-16 13:31:14 +0000 | [diff] [blame] | 511 | 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] | 512 | int valid) |
Miklos Szeredi | f3ea83b | 2001-11-07 14:55:16 +0000 | [diff] [blame] | 513 | { |
| 514 | int res; |
| 515 | uid_t uid = (valid & FATTR_UID) ? attr->uid : (uid_t) -1; |
| 516 | gid_t gid = (valid & FATTR_GID) ? attr->gid : (gid_t) -1; |
| 517 | |
| 518 | res = -ENOSYS; |
| 519 | if(f->op.chown) |
Miklos Szeredi | 0a7077f | 2001-11-11 18:20:17 +0000 | [diff] [blame] | 520 | res = f->op.chown(path, uid, gid); |
Miklos Szeredi | f3ea83b | 2001-11-07 14:55:16 +0000 | [diff] [blame] | 521 | |
| 522 | return res; |
| 523 | } |
| 524 | |
Miklos Szeredi | 680a69a | 2001-11-16 13:31:14 +0000 | [diff] [blame] | 525 | static int do_truncate(struct fuse *f, const char *path, |
| 526 | struct fuse_attr *attr) |
Miklos Szeredi | f3ea83b | 2001-11-07 14:55:16 +0000 | [diff] [blame] | 527 | { |
| 528 | int res; |
| 529 | |
| 530 | res = -ENOSYS; |
| 531 | if(f->op.truncate) |
Miklos Szeredi | 0a7077f | 2001-11-11 18:20:17 +0000 | [diff] [blame] | 532 | res = f->op.truncate(path, attr->size); |
Miklos Szeredi | f3ea83b | 2001-11-07 14:55:16 +0000 | [diff] [blame] | 533 | |
| 534 | return res; |
| 535 | } |
| 536 | |
Miklos Szeredi | 680a69a | 2001-11-16 13:31:14 +0000 | [diff] [blame] | 537 | 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] | 538 | { |
| 539 | int res; |
| 540 | struct utimbuf buf; |
| 541 | buf.actime = attr->atime; |
| 542 | buf.modtime = attr->mtime; |
| 543 | res = -ENOSYS; |
| 544 | if(f->op.utime) |
Miklos Szeredi | 0a7077f | 2001-11-11 18:20:17 +0000 | [diff] [blame] | 545 | res = f->op.utime(path, &buf); |
Miklos Szeredi | f3ea83b | 2001-11-07 14:55:16 +0000 | [diff] [blame] | 546 | |
| 547 | return res; |
| 548 | } |
| 549 | |
Miklos Szeredi | 5e18348 | 2001-10-31 14:52:35 +0000 | [diff] [blame] | 550 | static void do_setattr(struct fuse *f, struct fuse_in_header *in, |
| 551 | struct fuse_setattr_in *arg) |
| 552 | { |
| 553 | int res; |
| 554 | char *path; |
| 555 | int valid = arg->valid; |
| 556 | struct fuse_attr *attr = &arg->attr; |
Miklos Szeredi | 254d5ed | 2004-03-02 11:11:24 +0000 | [diff] [blame] | 557 | struct fuse_attr_out outarg; |
Miklos Szeredi | 5e18348 | 2001-10-31 14:52:35 +0000 | [diff] [blame] | 558 | |
| 559 | res = -ENOENT; |
Miklos Szeredi | a181e61 | 2001-11-06 12:03:23 +0000 | [diff] [blame] | 560 | path = get_path(f, in->ino); |
Miklos Szeredi | 5e18348 | 2001-10-31 14:52:35 +0000 | [diff] [blame] | 561 | if(path != NULL) { |
Miklos Szeredi | f3ea83b | 2001-11-07 14:55:16 +0000 | [diff] [blame] | 562 | res = -ENOSYS; |
| 563 | if(f->op.getattr) { |
| 564 | res = 0; |
| 565 | if(!res && (valid & FATTR_MODE)) |
Miklos Szeredi | 0a7077f | 2001-11-11 18:20:17 +0000 | [diff] [blame] | 566 | res = do_chmod(f, path, attr); |
Miklos Szeredi | f3ea83b | 2001-11-07 14:55:16 +0000 | [diff] [blame] | 567 | if(!res && (valid & (FATTR_UID | FATTR_GID))) |
Miklos Szeredi | 0a7077f | 2001-11-11 18:20:17 +0000 | [diff] [blame] | 568 | res = do_chown(f, path, attr, valid); |
Miklos Szeredi | f3ea83b | 2001-11-07 14:55:16 +0000 | [diff] [blame] | 569 | if(!res && (valid & FATTR_SIZE)) |
Miklos Szeredi | 0a7077f | 2001-11-11 18:20:17 +0000 | [diff] [blame] | 570 | res = do_truncate(f, path, attr); |
Miklos Szeredi | b595861 | 2004-02-20 14:10:49 +0000 | [diff] [blame] | 571 | if(!res && (valid & (FATTR_ATIME | FATTR_MTIME)) == |
| 572 | (FATTR_ATIME | FATTR_MTIME)) |
Miklos Szeredi | 0a7077f | 2001-11-11 18:20:17 +0000 | [diff] [blame] | 573 | res = do_utime(f, path, attr); |
Miklos Szeredi | f3ea83b | 2001-11-07 14:55:16 +0000 | [diff] [blame] | 574 | if(!res) { |
| 575 | struct stat buf; |
Miklos Szeredi | 0a7077f | 2001-11-11 18:20:17 +0000 | [diff] [blame] | 576 | res = f->op.getattr(path, &buf); |
Miklos Szeredi | 0f48a26 | 2002-12-05 14:23:01 +0000 | [diff] [blame] | 577 | if(!res) { |
Miklos Szeredi | 254d5ed | 2004-03-02 11:11:24 +0000 | [diff] [blame] | 578 | memset(&outarg, 0, sizeof(struct fuse_attr_out)); |
| 579 | outarg.attr_valid = ATTR_REVALIDATE_TIME; |
| 580 | outarg.attr_valid_nsec = 0; |
Miklos Szeredi | f3ea83b | 2001-11-07 14:55:16 +0000 | [diff] [blame] | 581 | convert_stat(&buf, &outarg.attr); |
Miklos Szeredi | 0f48a26 | 2002-12-05 14:23:01 +0000 | [diff] [blame] | 582 | } |
Miklos Szeredi | a181e61 | 2001-11-06 12:03:23 +0000 | [diff] [blame] | 583 | } |
Miklos Szeredi | 5e18348 | 2001-10-31 14:52:35 +0000 | [diff] [blame] | 584 | } |
Miklos Szeredi | 97c61e9 | 2001-11-07 12:09:43 +0000 | [diff] [blame] | 585 | free(path); |
Miklos Szeredi | 5e18348 | 2001-10-31 14:52:35 +0000 | [diff] [blame] | 586 | } |
Miklos Szeredi | a181e61 | 2001-11-06 12:03:23 +0000 | [diff] [blame] | 587 | send_reply(f, in, res, &outarg, sizeof(outarg)); |
Miklos Szeredi | 5e18348 | 2001-10-31 14:52:35 +0000 | [diff] [blame] | 588 | } |
| 589 | |
Miklos Szeredi | 85c74fc | 2001-10-28 19:44:14 +0000 | [diff] [blame] | 590 | static void do_readlink(struct fuse *f, struct fuse_in_header *in) |
| 591 | { |
| 592 | int res; |
| 593 | char link[PATH_MAX + 1]; |
Miklos Szeredi | b483c93 | 2001-10-29 14:57:57 +0000 | [diff] [blame] | 594 | char *path; |
Miklos Szeredi | 85c74fc | 2001-10-28 19:44:14 +0000 | [diff] [blame] | 595 | |
Miklos Szeredi | 5e18348 | 2001-10-31 14:52:35 +0000 | [diff] [blame] | 596 | res = -ENOENT; |
Miklos Szeredi | a181e61 | 2001-11-06 12:03:23 +0000 | [diff] [blame] | 597 | path = get_path(f, in->ino); |
Miklos Szeredi | 5e18348 | 2001-10-31 14:52:35 +0000 | [diff] [blame] | 598 | if(path != NULL) { |
| 599 | res = -ENOSYS; |
| 600 | if(f->op.readlink) |
Miklos Szeredi | 0a7077f | 2001-11-11 18:20:17 +0000 | [diff] [blame] | 601 | res = f->op.readlink(path, link, sizeof(link)); |
Miklos Szeredi | 97c61e9 | 2001-11-07 12:09:43 +0000 | [diff] [blame] | 602 | free(path); |
Miklos Szeredi | 5e18348 | 2001-10-31 14:52:35 +0000 | [diff] [blame] | 603 | } |
Miklos Szeredi | 2df1c04 | 2001-11-06 15:07:17 +0000 | [diff] [blame] | 604 | link[PATH_MAX] = '\0'; |
Miklos Szeredi | 4b2bef4 | 2002-01-09 12:23:27 +0000 | [diff] [blame] | 605 | send_reply(f, in, res, link, res == 0 ? strlen(link) : 0); |
Miklos Szeredi | 85c74fc | 2001-10-28 19:44:14 +0000 | [diff] [blame] | 606 | } |
| 607 | |
| 608 | static void do_getdir(struct fuse *f, struct fuse_in_header *in) |
| 609 | { |
| 610 | int res; |
| 611 | struct fuse_getdir_out arg; |
Miklos Szeredi | a181e61 | 2001-11-06 12:03:23 +0000 | [diff] [blame] | 612 | struct fuse_dirhandle dh; |
Miklos Szeredi | b483c93 | 2001-10-29 14:57:57 +0000 | [diff] [blame] | 613 | char *path; |
Miklos Szeredi | 85c74fc | 2001-10-28 19:44:14 +0000 | [diff] [blame] | 614 | |
Miklos Szeredi | b483c93 | 2001-10-29 14:57:57 +0000 | [diff] [blame] | 615 | dh.fuse = f; |
| 616 | dh.fp = tmpfile(); |
| 617 | dh.dir = in->ino; |
Miklos Szeredi | 5e18348 | 2001-10-31 14:52:35 +0000 | [diff] [blame] | 618 | res = -ENOENT; |
Miklos Szeredi | a181e61 | 2001-11-06 12:03:23 +0000 | [diff] [blame] | 619 | path = get_path(f, in->ino); |
Miklos Szeredi | 5e18348 | 2001-10-31 14:52:35 +0000 | [diff] [blame] | 620 | if(path != NULL) { |
| 621 | res = -ENOSYS; |
| 622 | if(f->op.getdir) |
Miklos Szeredi | 0a7077f | 2001-11-11 18:20:17 +0000 | [diff] [blame] | 623 | res = f->op.getdir(path, &dh, (fuse_dirfil_t) fill_dir); |
Miklos Szeredi | 97c61e9 | 2001-11-07 12:09:43 +0000 | [diff] [blame] | 624 | free(path); |
Miklos Szeredi | 5e18348 | 2001-10-31 14:52:35 +0000 | [diff] [blame] | 625 | } |
Miklos Szeredi | b483c93 | 2001-10-29 14:57:57 +0000 | [diff] [blame] | 626 | fflush(dh.fp); |
Miklos Szeredi | 0f48a26 | 2002-12-05 14:23:01 +0000 | [diff] [blame] | 627 | |
| 628 | memset(&arg, 0, sizeof(struct fuse_getdir_out)); |
Miklos Szeredi | b483c93 | 2001-10-29 14:57:57 +0000 | [diff] [blame] | 629 | arg.fd = fileno(dh.fp); |
Miklos Szeredi | 85c74fc | 2001-10-28 19:44:14 +0000 | [diff] [blame] | 630 | send_reply(f, in, res, &arg, sizeof(arg)); |
Miklos Szeredi | b483c93 | 2001-10-29 14:57:57 +0000 | [diff] [blame] | 631 | fclose(dh.fp); |
Miklos Szeredi | 85c74fc | 2001-10-28 19:44:14 +0000 | [diff] [blame] | 632 | } |
| 633 | |
Miklos Szeredi | b483c93 | 2001-10-29 14:57:57 +0000 | [diff] [blame] | 634 | static void do_mknod(struct fuse *f, struct fuse_in_header *in, |
| 635 | struct fuse_mknod_in *inarg) |
| 636 | { |
| 637 | int res; |
| 638 | char *path; |
Miklos Szeredi | 76f6578 | 2004-02-19 16:55:40 +0000 | [diff] [blame] | 639 | char *name = PARAM(inarg); |
Miklos Szeredi | 254d5ed | 2004-03-02 11:11:24 +0000 | [diff] [blame] | 640 | struct fuse_entry_out outarg; |
Miklos Szeredi | b483c93 | 2001-10-29 14:57:57 +0000 | [diff] [blame] | 641 | |
Miklos Szeredi | 5e18348 | 2001-10-31 14:52:35 +0000 | [diff] [blame] | 642 | res = -ENOENT; |
Miklos Szeredi | 76f6578 | 2004-02-19 16:55:40 +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) { |
Miklos Szeredi | 76f6578 | 2004-02-19 16:55:40 +0000 | [diff] [blame] | 645 | if(f->flags & FUSE_DEBUG) { |
| 646 | printf("MKNOD %s\n", path); |
| 647 | fflush(stdout); |
| 648 | } |
Miklos Szeredi | 5e18348 | 2001-10-31 14:52:35 +0000 | [diff] [blame] | 649 | res = -ENOSYS; |
| 650 | if(f->op.mknod && f->op.getattr) { |
Miklos Szeredi | 0a7077f | 2001-11-11 18:20:17 +0000 | [diff] [blame] | 651 | res = f->op.mknod(path, inarg->mode, inarg->rdev); |
Miklos Szeredi | 5e18348 | 2001-10-31 14:52:35 +0000 | [diff] [blame] | 652 | if(res == 0) |
Miklos Szeredi | 76f6578 | 2004-02-19 16:55:40 +0000 | [diff] [blame] | 653 | res = lookup_path(f, in->ino, in->unique, name, path, &outarg); |
Miklos Szeredi | 5e18348 | 2001-10-31 14:52:35 +0000 | [diff] [blame] | 654 | } |
Miklos Szeredi | 97c61e9 | 2001-11-07 12:09:43 +0000 | [diff] [blame] | 655 | free(path); |
Miklos Szeredi | b483c93 | 2001-10-29 14:57:57 +0000 | [diff] [blame] | 656 | } |
Miklos Szeredi | b483c93 | 2001-10-29 14:57:57 +0000 | [diff] [blame] | 657 | send_reply(f, in, res, &outarg, sizeof(outarg)); |
| 658 | } |
| 659 | |
| 660 | static void do_mkdir(struct fuse *f, struct fuse_in_header *in, |
| 661 | struct fuse_mkdir_in *inarg) |
| 662 | { |
| 663 | int res; |
| 664 | char *path; |
Miklos Szeredi | 76f6578 | 2004-02-19 16:55:40 +0000 | [diff] [blame] | 665 | char *name = PARAM(inarg); |
Miklos Szeredi | 254d5ed | 2004-03-02 11:11:24 +0000 | [diff] [blame] | 666 | struct fuse_entry_out outarg; |
Miklos Szeredi | b483c93 | 2001-10-29 14:57:57 +0000 | [diff] [blame] | 667 | |
Miklos Szeredi | 5e18348 | 2001-10-31 14:52:35 +0000 | [diff] [blame] | 668 | res = -ENOENT; |
Miklos Szeredi | 76f6578 | 2004-02-19 16:55:40 +0000 | [diff] [blame] | 669 | path = get_path_name(f, in->ino, name); |
Miklos Szeredi | 5e18348 | 2001-10-31 14:52:35 +0000 | [diff] [blame] | 670 | if(path != NULL) { |
Miklos Szeredi | 76f6578 | 2004-02-19 16:55:40 +0000 | [diff] [blame] | 671 | if(f->flags & FUSE_DEBUG) { |
| 672 | printf("MKDIR %s\n", path); |
| 673 | fflush(stdout); |
| 674 | } |
Miklos Szeredi | 5e18348 | 2001-10-31 14:52:35 +0000 | [diff] [blame] | 675 | res = -ENOSYS; |
Miklos Szeredi | 76f6578 | 2004-02-19 16:55:40 +0000 | [diff] [blame] | 676 | if(f->op.mkdir && f->op.getattr) { |
Miklos Szeredi | 0a7077f | 2001-11-11 18:20:17 +0000 | [diff] [blame] | 677 | res = f->op.mkdir(path, inarg->mode); |
Miklos Szeredi | 76f6578 | 2004-02-19 16:55:40 +0000 | [diff] [blame] | 678 | if(res == 0) |
| 679 | res = lookup_path(f, in->ino, in->unique, name, path, &outarg); |
| 680 | } |
Miklos Szeredi | 97c61e9 | 2001-11-07 12:09:43 +0000 | [diff] [blame] | 681 | free(path); |
Miklos Szeredi | 5e18348 | 2001-10-31 14:52:35 +0000 | [diff] [blame] | 682 | } |
Miklos Szeredi | 76f6578 | 2004-02-19 16:55:40 +0000 | [diff] [blame] | 683 | send_reply(f, in, res, &outarg, sizeof(outarg)); |
Miklos Szeredi | b483c93 | 2001-10-29 14:57:57 +0000 | [diff] [blame] | 684 | } |
| 685 | |
Miklos Szeredi | b595861 | 2004-02-20 14:10:49 +0000 | [diff] [blame] | 686 | 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] | 687 | { |
| 688 | int res; |
| 689 | char *path; |
| 690 | |
Miklos Szeredi | 5e18348 | 2001-10-31 14:52:35 +0000 | [diff] [blame] | 691 | res = -ENOENT; |
Miklos Szeredi | a181e61 | 2001-11-06 12:03:23 +0000 | [diff] [blame] | 692 | path = get_path_name(f, in->ino, name); |
Miklos Szeredi | 5e18348 | 2001-10-31 14:52:35 +0000 | [diff] [blame] | 693 | if(path != NULL) { |
| 694 | res = -ENOSYS; |
Miklos Szeredi | b595861 | 2004-02-20 14:10:49 +0000 | [diff] [blame] | 695 | if(f->op.unlink) { |
| 696 | res = f->op.unlink(path); |
| 697 | if(res == 0) |
| 698 | remove_node(f, in->ino, name); |
Miklos Szeredi | 5e18348 | 2001-10-31 14:52:35 +0000 | [diff] [blame] | 699 | } |
Miklos Szeredi | 97c61e9 | 2001-11-07 12:09:43 +0000 | [diff] [blame] | 700 | free(path); |
Miklos Szeredi | b483c93 | 2001-10-29 14:57:57 +0000 | [diff] [blame] | 701 | } |
Miklos Szeredi | b595861 | 2004-02-20 14:10:49 +0000 | [diff] [blame] | 702 | send_reply(f, in, res, NULL, 0); |
| 703 | } |
| 704 | |
| 705 | static void do_rmdir(struct fuse *f, struct fuse_in_header *in, char *name) |
| 706 | { |
| 707 | int res; |
| 708 | char *path; |
| 709 | |
| 710 | res = -ENOENT; |
| 711 | path = get_path_name(f, in->ino, name); |
| 712 | if(path != NULL) { |
| 713 | res = -ENOSYS; |
| 714 | if(f->op.rmdir) { |
| 715 | res = f->op.rmdir(path); |
| 716 | if(res == 0) |
| 717 | remove_node(f, in->ino, name); |
| 718 | } |
| 719 | free(path); |
| 720 | } |
Miklos Szeredi | b483c93 | 2001-10-29 14:57:57 +0000 | [diff] [blame] | 721 | send_reply(f, in, res, NULL, 0); |
| 722 | } |
| 723 | |
| 724 | static void do_symlink(struct fuse *f, struct fuse_in_header *in, char *name, |
| 725 | char *link) |
| 726 | { |
| 727 | int res; |
| 728 | char *path; |
Miklos Szeredi | 254d5ed | 2004-03-02 11:11:24 +0000 | [diff] [blame] | 729 | struct fuse_entry_out outarg; |
Miklos Szeredi | b483c93 | 2001-10-29 14:57:57 +0000 | [diff] [blame] | 730 | |
Miklos Szeredi | 5e18348 | 2001-10-31 14:52:35 +0000 | [diff] [blame] | 731 | res = -ENOENT; |
Miklos Szeredi | a181e61 | 2001-11-06 12:03:23 +0000 | [diff] [blame] | 732 | path = get_path_name(f, in->ino, name); |
Miklos Szeredi | 5e18348 | 2001-10-31 14:52:35 +0000 | [diff] [blame] | 733 | if(path != NULL) { |
Miklos Szeredi | 76f6578 | 2004-02-19 16:55:40 +0000 | [diff] [blame] | 734 | if(f->flags & FUSE_DEBUG) { |
| 735 | printf("SYMLINK %s\n", path); |
| 736 | fflush(stdout); |
| 737 | } |
Miklos Szeredi | 5e18348 | 2001-10-31 14:52:35 +0000 | [diff] [blame] | 738 | res = -ENOSYS; |
Miklos Szeredi | 76f6578 | 2004-02-19 16:55:40 +0000 | [diff] [blame] | 739 | if(f->op.symlink && f->op.getattr) { |
Miklos Szeredi | 0a7077f | 2001-11-11 18:20:17 +0000 | [diff] [blame] | 740 | res = f->op.symlink(link, path); |
Miklos Szeredi | 76f6578 | 2004-02-19 16:55:40 +0000 | [diff] [blame] | 741 | if(res == 0) |
| 742 | res = lookup_path(f, in->ino, in->unique, name, path, &outarg); |
| 743 | } |
Miklos Szeredi | 97c61e9 | 2001-11-07 12:09:43 +0000 | [diff] [blame] | 744 | free(path); |
Miklos Szeredi | 5e18348 | 2001-10-31 14:52:35 +0000 | [diff] [blame] | 745 | } |
Miklos Szeredi | 76f6578 | 2004-02-19 16:55:40 +0000 | [diff] [blame] | 746 | send_reply(f, in, res, &outarg, sizeof(outarg)); |
Miklos Szeredi | b483c93 | 2001-10-29 14:57:57 +0000 | [diff] [blame] | 747 | } |
| 748 | |
Miklos Szeredi | 19dff1b | 2001-10-30 15:06:52 +0000 | [diff] [blame] | 749 | static void do_rename(struct fuse *f, struct fuse_in_header *in, |
| 750 | struct fuse_rename_in *inarg) |
| 751 | { |
| 752 | int res; |
| 753 | fino_t olddir = in->ino; |
| 754 | fino_t newdir = inarg->newdir; |
Miklos Szeredi | 6bf8b68 | 2002-10-28 08:49:39 +0000 | [diff] [blame] | 755 | char *oldname = PARAM(inarg); |
| 756 | char *newname = oldname + strlen(oldname) + 1; |
Miklos Szeredi | 5e18348 | 2001-10-31 14:52:35 +0000 | [diff] [blame] | 757 | char *oldpath; |
| 758 | char *newpath; |
Miklos Szeredi | 19dff1b | 2001-10-30 15:06:52 +0000 | [diff] [blame] | 759 | |
Miklos Szeredi | 5e18348 | 2001-10-31 14:52:35 +0000 | [diff] [blame] | 760 | res = -ENOENT; |
Miklos Szeredi | a181e61 | 2001-11-06 12:03:23 +0000 | [diff] [blame] | 761 | oldpath = get_path_name(f, olddir, oldname); |
Miklos Szeredi | 5e18348 | 2001-10-31 14:52:35 +0000 | [diff] [blame] | 762 | if(oldpath != NULL) { |
Miklos Szeredi | a181e61 | 2001-11-06 12:03:23 +0000 | [diff] [blame] | 763 | newpath = get_path_name(f, newdir, newname); |
Miklos Szeredi | 5e18348 | 2001-10-31 14:52:35 +0000 | [diff] [blame] | 764 | if(newpath != NULL) { |
| 765 | res = -ENOSYS; |
| 766 | if(f->op.rename) |
Miklos Szeredi | 0a7077f | 2001-11-11 18:20:17 +0000 | [diff] [blame] | 767 | res = f->op.rename(oldpath, newpath); |
Miklos Szeredi | 5e18348 | 2001-10-31 14:52:35 +0000 | [diff] [blame] | 768 | if(res == 0) |
| 769 | rename_node(f, olddir, oldname, newdir, newname); |
Miklos Szeredi | 97c61e9 | 2001-11-07 12:09:43 +0000 | [diff] [blame] | 770 | free(newpath); |
Miklos Szeredi | 5e18348 | 2001-10-31 14:52:35 +0000 | [diff] [blame] | 771 | } |
Miklos Szeredi | 97c61e9 | 2001-11-07 12:09:43 +0000 | [diff] [blame] | 772 | free(oldpath); |
Miklos Szeredi | 5e18348 | 2001-10-31 14:52:35 +0000 | [diff] [blame] | 773 | } |
Miklos Szeredi | 19dff1b | 2001-10-30 15:06:52 +0000 | [diff] [blame] | 774 | send_reply(f, in, res, NULL, 0); |
| 775 | } |
| 776 | |
| 777 | static void do_link(struct fuse *f, struct fuse_in_header *in, |
Miklos Szeredi | 5e18348 | 2001-10-31 14:52:35 +0000 | [diff] [blame] | 778 | struct fuse_link_in *arg) |
Miklos Szeredi | 19dff1b | 2001-10-30 15:06:52 +0000 | [diff] [blame] | 779 | { |
| 780 | int res; |
Miklos Szeredi | 5e18348 | 2001-10-31 14:52:35 +0000 | [diff] [blame] | 781 | char *oldpath; |
| 782 | char *newpath; |
Miklos Szeredi | 76f6578 | 2004-02-19 16:55:40 +0000 | [diff] [blame] | 783 | char *name = PARAM(arg); |
Miklos Szeredi | 254d5ed | 2004-03-02 11:11:24 +0000 | [diff] [blame] | 784 | struct fuse_entry_out outarg; |
Miklos Szeredi | 19dff1b | 2001-10-30 15:06:52 +0000 | [diff] [blame] | 785 | |
Miklos Szeredi | 5e18348 | 2001-10-31 14:52:35 +0000 | [diff] [blame] | 786 | res = -ENOENT; |
Miklos Szeredi | a181e61 | 2001-11-06 12:03:23 +0000 | [diff] [blame] | 787 | oldpath = get_path(f, in->ino); |
Miklos Szeredi | 5e18348 | 2001-10-31 14:52:35 +0000 | [diff] [blame] | 788 | if(oldpath != NULL) { |
Miklos Szeredi | 76f6578 | 2004-02-19 16:55:40 +0000 | [diff] [blame] | 789 | newpath = get_path_name(f, arg->newdir, name); |
Miklos Szeredi | 5e18348 | 2001-10-31 14:52:35 +0000 | [diff] [blame] | 790 | if(newpath != NULL) { |
Miklos Szeredi | 76f6578 | 2004-02-19 16:55:40 +0000 | [diff] [blame] | 791 | if(f->flags & FUSE_DEBUG) { |
| 792 | printf("LINK %s\n", newpath); |
| 793 | fflush(stdout); |
| 794 | } |
Miklos Szeredi | 5e18348 | 2001-10-31 14:52:35 +0000 | [diff] [blame] | 795 | res = -ENOSYS; |
Miklos Szeredi | 76f6578 | 2004-02-19 16:55:40 +0000 | [diff] [blame] | 796 | if(f->op.link && f->op.getattr) { |
Miklos Szeredi | 0a7077f | 2001-11-11 18:20:17 +0000 | [diff] [blame] | 797 | res = f->op.link(oldpath, newpath); |
Miklos Szeredi | 76f6578 | 2004-02-19 16:55:40 +0000 | [diff] [blame] | 798 | if(res == 0) |
| 799 | res = lookup_path(f, arg->newdir, in->unique, name, |
| 800 | newpath, &outarg); |
| 801 | } |
Miklos Szeredi | 97c61e9 | 2001-11-07 12:09:43 +0000 | [diff] [blame] | 802 | free(newpath); |
Miklos Szeredi | 5e18348 | 2001-10-31 14:52:35 +0000 | [diff] [blame] | 803 | } |
Miklos Szeredi | 97c61e9 | 2001-11-07 12:09:43 +0000 | [diff] [blame] | 804 | free(oldpath); |
Miklos Szeredi | 5e18348 | 2001-10-31 14:52:35 +0000 | [diff] [blame] | 805 | } |
Miklos Szeredi | 76f6578 | 2004-02-19 16:55:40 +0000 | [diff] [blame] | 806 | send_reply(f, in, res, &outarg, sizeof(outarg)); |
Miklos Szeredi | 19dff1b | 2001-10-30 15:06:52 +0000 | [diff] [blame] | 807 | } |
| 808 | |
Miklos Szeredi | 5e18348 | 2001-10-31 14:52:35 +0000 | [diff] [blame] | 809 | static void do_open(struct fuse *f, struct fuse_in_header *in, |
| 810 | struct fuse_open_in *arg) |
| 811 | { |
| 812 | int res; |
Miklos Szeredi | 40b9a5a | 2002-12-10 16:09:02 +0000 | [diff] [blame] | 813 | int res2; |
Miklos Szeredi | 5e18348 | 2001-10-31 14:52:35 +0000 | [diff] [blame] | 814 | char *path; |
| 815 | |
| 816 | res = -ENOENT; |
Miklos Szeredi | a181e61 | 2001-11-06 12:03:23 +0000 | [diff] [blame] | 817 | path = get_path(f, in->ino); |
Miklos Szeredi | 5e18348 | 2001-10-31 14:52:35 +0000 | [diff] [blame] | 818 | if(path != NULL) { |
| 819 | res = -ENOSYS; |
| 820 | if(f->op.open) |
Miklos Szeredi | 0a7077f | 2001-11-11 18:20:17 +0000 | [diff] [blame] | 821 | res = f->op.open(path, arg->flags); |
Miklos Szeredi | 40b9a5a | 2002-12-10 16:09:02 +0000 | [diff] [blame] | 822 | } |
| 823 | res2 = send_reply(f, in, res, NULL, 0); |
| 824 | if(path != NULL) { |
| 825 | /* The open syscall was interrupted, so it must be cancelled */ |
| 826 | if(res == 0 && res2 == -ENOENT && f->op.release) |
Miklos Szeredi | 9478e86 | 2002-12-11 09:50:26 +0000 | [diff] [blame] | 827 | f->op.release(path, arg->flags); |
Miklos Szeredi | 97c61e9 | 2001-11-07 12:09:43 +0000 | [diff] [blame] | 828 | free(path); |
Miklos Szeredi | 5e18348 | 2001-10-31 14:52:35 +0000 | [diff] [blame] | 829 | } |
Miklos Szeredi | 5e18348 | 2001-10-31 14:52:35 +0000 | [diff] [blame] | 830 | } |
| 831 | |
Miklos Szeredi | 9478e86 | 2002-12-11 09:50:26 +0000 | [diff] [blame] | 832 | static void do_release(struct fuse *f, struct fuse_in_header *in, |
| 833 | struct fuse_open_in *arg) |
Miklos Szeredi | c8ba237 | 2002-12-10 12:26:00 +0000 | [diff] [blame] | 834 | { |
Miklos Szeredi | c8ba237 | 2002-12-10 12:26:00 +0000 | [diff] [blame] | 835 | char *path; |
| 836 | |
Miklos Szeredi | c8ba237 | 2002-12-10 12:26:00 +0000 | [diff] [blame] | 837 | path = get_path(f, in->ino); |
| 838 | if(path != NULL) { |
Miklos Szeredi | c8ba237 | 2002-12-10 12:26:00 +0000 | [diff] [blame] | 839 | if(f->op.release) |
Miklos Szeredi | 9478e86 | 2002-12-11 09:50:26 +0000 | [diff] [blame] | 840 | f->op.release(path, arg->flags); |
Miklos Szeredi | c8ba237 | 2002-12-10 12:26:00 +0000 | [diff] [blame] | 841 | free(path); |
| 842 | } |
Miklos Szeredi | c8ba237 | 2002-12-10 12:26:00 +0000 | [diff] [blame] | 843 | } |
| 844 | |
Miklos Szeredi | 5e18348 | 2001-10-31 14:52:35 +0000 | [diff] [blame] | 845 | static void do_read(struct fuse *f, struct fuse_in_header *in, |
| 846 | struct fuse_read_in *arg) |
| 847 | { |
| 848 | int res; |
| 849 | char *path; |
Miklos Szeredi | 4369643 | 2001-11-18 19:15:05 +0000 | [diff] [blame] | 850 | char *outbuf = (char *) malloc(sizeof(struct fuse_out_header) + arg->size); |
| 851 | struct fuse_out_header *out = (struct fuse_out_header *) outbuf; |
| 852 | char *buf = outbuf + sizeof(struct fuse_out_header); |
Miklos Szeredi | 5e18348 | 2001-10-31 14:52:35 +0000 | [diff] [blame] | 853 | size_t size; |
Miklos Szeredi | 4369643 | 2001-11-18 19:15:05 +0000 | [diff] [blame] | 854 | size_t outsize; |
Miklos Szeredi | 5e18348 | 2001-10-31 14:52:35 +0000 | [diff] [blame] | 855 | |
Miklos Szeredi | 97c61e9 | 2001-11-07 12:09:43 +0000 | [diff] [blame] | 856 | res = -ENOENT; |
Miklos Szeredi | a181e61 | 2001-11-06 12:03:23 +0000 | [diff] [blame] | 857 | path = get_path(f, in->ino); |
Miklos Szeredi | 5e18348 | 2001-10-31 14:52:35 +0000 | [diff] [blame] | 858 | if(path != NULL) { |
Miklos Szeredi | 6ebe234 | 2002-01-06 21:44:16 +0000 | [diff] [blame] | 859 | if(f->flags & FUSE_DEBUG) { |
| 860 | printf("READ %u bytes from %llu\n", arg->size, arg->offset); |
| 861 | fflush(stdout); |
| 862 | } |
| 863 | |
Miklos Szeredi | 5e18348 | 2001-10-31 14:52:35 +0000 | [diff] [blame] | 864 | res = -ENOSYS; |
Miklos Szeredi | a181e61 | 2001-11-06 12:03:23 +0000 | [diff] [blame] | 865 | if(f->op.read) |
Miklos Szeredi | 0a7077f | 2001-11-11 18:20:17 +0000 | [diff] [blame] | 866 | res = f->op.read(path, buf, arg->size, arg->offset); |
Miklos Szeredi | 97c61e9 | 2001-11-07 12:09:43 +0000 | [diff] [blame] | 867 | free(path); |
Miklos Szeredi | 5e18348 | 2001-10-31 14:52:35 +0000 | [diff] [blame] | 868 | } |
| 869 | |
| 870 | size = 0; |
| 871 | if(res > 0) { |
| 872 | size = res; |
| 873 | res = 0; |
Miklos Szeredi | 6ebe234 | 2002-01-06 21:44:16 +0000 | [diff] [blame] | 874 | if(f->flags & FUSE_DEBUG) { |
| 875 | printf(" READ %u bytes\n", size); |
| 876 | fflush(stdout); |
| 877 | } |
Miklos Szeredi | 5e18348 | 2001-10-31 14:52:35 +0000 | [diff] [blame] | 878 | } |
Miklos Szeredi | 0f48a26 | 2002-12-05 14:23:01 +0000 | [diff] [blame] | 879 | memset(out, 0, sizeof(struct fuse_out_header)); |
Miklos Szeredi | 4369643 | 2001-11-18 19:15:05 +0000 | [diff] [blame] | 880 | out->unique = in->unique; |
| 881 | out->error = res; |
| 882 | outsize = sizeof(struct fuse_out_header) + size; |
| 883 | |
| 884 | send_reply_raw(f, outbuf, outsize); |
| 885 | free(outbuf); |
Miklos Szeredi | 5e18348 | 2001-10-31 14:52:35 +0000 | [diff] [blame] | 886 | } |
Miklos Szeredi | b483c93 | 2001-10-29 14:57:57 +0000 | [diff] [blame] | 887 | |
Miklos Szeredi | a181e61 | 2001-11-06 12:03:23 +0000 | [diff] [blame] | 888 | static void do_write(struct fuse *f, struct fuse_in_header *in, |
| 889 | struct fuse_write_in *arg) |
| 890 | { |
| 891 | int res; |
| 892 | char *path; |
Miklos Szeredi | a181e61 | 2001-11-06 12:03:23 +0000 | [diff] [blame] | 893 | |
Miklos Szeredi | 97c61e9 | 2001-11-07 12:09:43 +0000 | [diff] [blame] | 894 | res = -ENOENT; |
Miklos Szeredi | a181e61 | 2001-11-06 12:03:23 +0000 | [diff] [blame] | 895 | path = get_path(f, in->ino); |
| 896 | if(path != NULL) { |
Miklos Szeredi | 6ebe234 | 2002-01-06 21:44:16 +0000 | [diff] [blame] | 897 | if(f->flags & FUSE_DEBUG) { |
| 898 | printf("WRITE %u bytes to %llu\n", arg->size, arg->offset); |
| 899 | fflush(stdout); |
| 900 | } |
| 901 | |
Miklos Szeredi | a181e61 | 2001-11-06 12:03:23 +0000 | [diff] [blame] | 902 | res = -ENOSYS; |
| 903 | if(f->op.write) |
Miklos Szeredi | 6bf8b68 | 2002-10-28 08:49:39 +0000 | [diff] [blame] | 904 | res = f->op.write(path, PARAM(arg), arg->size, arg->offset); |
Miklos Szeredi | 97c61e9 | 2001-11-07 12:09:43 +0000 | [diff] [blame] | 905 | free(path); |
Miklos Szeredi | a181e61 | 2001-11-06 12:03:23 +0000 | [diff] [blame] | 906 | } |
| 907 | |
| 908 | if(res > 0) { |
| 909 | if((size_t) res != arg->size) { |
| 910 | fprintf(stderr, "short write: %u (should be %u)\n", res, |
| 911 | arg->size); |
Miklos Szeredi | 0e53508 | 2003-10-13 10:08:06 +0000 | [diff] [blame] | 912 | res = -EINVAL; |
Miklos Szeredi | a181e61 | 2001-11-06 12:03:23 +0000 | [diff] [blame] | 913 | } |
| 914 | else |
| 915 | res = 0; |
| 916 | } |
| 917 | |
| 918 | send_reply(f, in, res, NULL, 0); |
| 919 | } |
| 920 | |
Miklos Szeredi | 77f3994 | 2004-03-25 11:17:52 +0000 | [diff] [blame] | 921 | static int default_statfs(struct statfs *buf) |
| 922 | { |
| 923 | buf->f_namelen = 255; |
| 924 | buf->f_bsize = 512; |
| 925 | return 0; |
| 926 | } |
| 927 | |
Miklos Szeredi | 18e75e4 | 2004-02-19 14:23:27 +0000 | [diff] [blame] | 928 | static void convert_statfs(struct statfs *statfs, struct fuse_kstatfs *kstatfs) |
| 929 | { |
| 930 | kstatfs->bsize = statfs->f_bsize; |
| 931 | kstatfs->blocks = statfs->f_blocks; |
| 932 | kstatfs->bfree = statfs->f_bfree; |
| 933 | kstatfs->bavail = statfs->f_bavail; |
| 934 | kstatfs->files = statfs->f_files; |
| 935 | kstatfs->ffree = statfs->f_ffree; |
| 936 | kstatfs->namelen = statfs->f_namelen; |
| 937 | } |
| 938 | |
Mark Glines | d84b39a | 2002-01-07 16:32:02 +0000 | [diff] [blame] | 939 | static void do_statfs(struct fuse *f, struct fuse_in_header *in) |
| 940 | { |
| 941 | int res; |
Mark Glines | d84b39a | 2002-01-07 16:32:02 +0000 | [diff] [blame] | 942 | struct fuse_statfs_out arg; |
Miklos Szeredi | 18e75e4 | 2004-02-19 14:23:27 +0000 | [diff] [blame] | 943 | struct statfs buf; |
Mark Glines | d84b39a | 2002-01-07 16:32:02 +0000 | [diff] [blame] | 944 | |
Miklos Szeredi | 77f3994 | 2004-03-25 11:17:52 +0000 | [diff] [blame] | 945 | memset(&buf, 0, sizeof(struct statfs)); |
| 946 | if(f->op.statfs) |
Miklos Szeredi | 18e75e4 | 2004-02-19 14:23:27 +0000 | [diff] [blame] | 947 | res = f->op.statfs("/", &buf); |
Miklos Szeredi | 77f3994 | 2004-03-25 11:17:52 +0000 | [diff] [blame] | 948 | else |
| 949 | res = default_statfs(&buf); |
| 950 | |
| 951 | if(res == 0) |
| 952 | convert_statfs(&buf, &arg.st); |
Miklos Szeredi | 4b2bef4 | 2002-01-09 12:23:27 +0000 | [diff] [blame] | 953 | |
Mark Glines | d84b39a | 2002-01-07 16:32:02 +0000 | [diff] [blame] | 954 | send_reply(f, in, res, &arg, sizeof(arg)); |
| 955 | } |
| 956 | |
Miklos Szeredi | 5e43f2c | 2003-12-12 14:06:41 +0000 | [diff] [blame] | 957 | static void do_fsync(struct fuse *f, struct fuse_in_header *in, |
| 958 | struct fuse_fsync_in *inarg) |
| 959 | { |
| 960 | int res; |
| 961 | char *path; |
| 962 | |
| 963 | res = -ENOENT; |
| 964 | path = get_path(f, in->ino); |
| 965 | if(path != NULL) { |
| 966 | /* fsync is not mandatory, so don't return ENOSYS */ |
| 967 | res = 0; |
| 968 | if(f->op.fsync) |
| 969 | res = f->op.fsync(path, inarg->datasync); |
| 970 | free(path); |
| 971 | } |
| 972 | send_reply(f, in, res, NULL, 0); |
| 973 | } |
| 974 | |
Miklos Szeredi | 3ed8423 | 2004-03-30 15:17:26 +0000 | [diff] [blame^] | 975 | static void do_setxattr(struct fuse *f, struct fuse_in_header *in, |
| 976 | struct fuse_setxattr_in *arg) |
| 977 | { |
| 978 | int res; |
| 979 | char *path; |
| 980 | char *name = PARAM(arg); |
| 981 | unsigned char *value = name + strlen(name) + 1; |
| 982 | |
| 983 | res = -ENOENT; |
| 984 | path = get_path(f, in->ino); |
| 985 | if (path != NULL) { |
| 986 | res = -EOPNOTSUPP; /* or is it ENOTSUPP ??? */ |
| 987 | if (f->op.setxattr) |
| 988 | res = f->op.setxattr(path, name, value, arg->size, arg->flags); |
| 989 | free(path); |
| 990 | } |
| 991 | send_reply(f, in, res, NULL, 0); |
| 992 | } |
| 993 | |
| 994 | static void do_getxattr(struct fuse *f, struct fuse_in_header *in, |
| 995 | struct fuse_getlistxattr_in *arg) |
| 996 | { |
| 997 | int res; |
| 998 | char *path; |
| 999 | char *name = PARAM(arg); |
| 1000 | char *outbuf = (char *) malloc(sizeof(struct fuse_out_header) + arg->size); |
| 1001 | struct fuse_out_header *out = (struct fuse_out_header *) outbuf; |
| 1002 | char *value = outbuf + sizeof(struct fuse_out_header); |
| 1003 | size_t size; |
| 1004 | size_t outsize; |
| 1005 | |
| 1006 | res = -ENOENT; |
| 1007 | path = get_path(f, in->ino); |
| 1008 | if (path != NULL) { |
| 1009 | res = -EOPNOTSUPP; /* or is it ENOTSUPP ??? */ |
| 1010 | if (f->op.getxattr) |
| 1011 | res = f->op.getxattr(path, name, value, arg->size); |
| 1012 | free(path); |
| 1013 | } |
| 1014 | size = 0; |
| 1015 | if(res > 0) { |
| 1016 | size = res; |
| 1017 | res = 0; |
| 1018 | } |
| 1019 | memset(out, 0, sizeof(struct fuse_out_header)); |
| 1020 | out->unique = in->unique; |
| 1021 | out->error = res; |
| 1022 | outsize = sizeof(struct fuse_out_header) + size; |
| 1023 | |
| 1024 | send_reply_raw(f, outbuf, outsize); |
| 1025 | free(outbuf); |
| 1026 | } |
| 1027 | |
| 1028 | static void do_listxattr(struct fuse *f, struct fuse_in_header *in, |
| 1029 | struct fuse_getlistxattr_in *arg) |
| 1030 | { |
| 1031 | int res; |
| 1032 | char *path; |
| 1033 | char *outbuf = (char *) malloc(sizeof(struct fuse_out_header) + arg->size); |
| 1034 | struct fuse_out_header *out = (struct fuse_out_header *) outbuf; |
| 1035 | char *value = outbuf + sizeof(struct fuse_out_header); |
| 1036 | size_t size; |
| 1037 | size_t outsize; |
| 1038 | |
| 1039 | res = -ENOENT; |
| 1040 | path = get_path(f, in->ino); |
| 1041 | if (path != NULL) { |
| 1042 | res = -EOPNOTSUPP; /* or is it ENOTSUPP ??? */ |
| 1043 | if (f->op.listxattr) |
| 1044 | res = f->op.listxattr(path, value, arg->size); |
| 1045 | free(path); |
| 1046 | } |
| 1047 | size = 0; |
| 1048 | if(res > 0) { |
| 1049 | size = res; |
| 1050 | res = 0; |
| 1051 | } |
| 1052 | memset(out, 0, sizeof(struct fuse_out_header)); |
| 1053 | out->unique = in->unique; |
| 1054 | out->error = res; |
| 1055 | outsize = sizeof(struct fuse_out_header) + size; |
| 1056 | |
| 1057 | send_reply_raw(f, outbuf, outsize); |
| 1058 | free(outbuf); |
| 1059 | } |
| 1060 | |
| 1061 | static void do_removexattr(struct fuse *f, struct fuse_in_header *in, |
| 1062 | char *name) |
| 1063 | { |
| 1064 | int res; |
| 1065 | char *path; |
| 1066 | |
| 1067 | res = -ENOENT; |
| 1068 | path = get_path(f, in->ino); |
| 1069 | if (path != NULL) { |
| 1070 | res = -EOPNOTSUPP; /* or is it ENOTSUPP ??? */ |
| 1071 | if (f->op.removexattr) |
| 1072 | res = f->op.removexattr(path, name); |
| 1073 | free(path); |
| 1074 | } |
| 1075 | send_reply(f, in, res, NULL, 0); |
| 1076 | } |
| 1077 | |
| 1078 | |
Miklos Szeredi | 4369643 | 2001-11-18 19:15:05 +0000 | [diff] [blame] | 1079 | static void free_cmd(struct fuse_cmd *cmd) |
| 1080 | { |
| 1081 | free(cmd->buf); |
| 1082 | free(cmd); |
| 1083 | } |
| 1084 | |
Miklos Szeredi | fff56ab | 2001-11-16 10:12:59 +0000 | [diff] [blame] | 1085 | void __fuse_process_cmd(struct fuse *f, struct fuse_cmd *cmd) |
Miklos Szeredi | a181e61 | 2001-11-06 12:03:23 +0000 | [diff] [blame] | 1086 | { |
Miklos Szeredi | a181e61 | 2001-11-06 12:03:23 +0000 | [diff] [blame] | 1087 | struct fuse_in_header *in = (struct fuse_in_header *) cmd->buf; |
| 1088 | void *inarg = cmd->buf + sizeof(struct fuse_in_header); |
| 1089 | size_t argsize; |
Miklos Szeredi | fe25def | 2001-12-20 15:38:05 +0000 | [diff] [blame] | 1090 | struct fuse_context *ctx = fuse_get_context(f); |
Miklos Szeredi | a181e61 | 2001-11-06 12:03:23 +0000 | [diff] [blame] | 1091 | |
Miklos Szeredi | 99ddf0e | 2001-11-25 17:19:59 +0000 | [diff] [blame] | 1092 | dec_avail(f); |
Miklos Szeredi | 3323203 | 2001-11-19 17:55:51 +0000 | [diff] [blame] | 1093 | |
Miklos Szeredi | c0938ea | 2001-11-07 12:35:06 +0000 | [diff] [blame] | 1094 | if((f->flags & FUSE_DEBUG)) { |
Miklos Szeredi | c8ba237 | 2002-12-10 12:26:00 +0000 | [diff] [blame] | 1095 | printf("unique: %i, opcode: %s (%i), ino: %li, insize: %i\n", |
| 1096 | in->unique, opname(in->opcode), in->opcode, in->ino, |
| 1097 | cmd->buflen); |
Miklos Szeredi | c0938ea | 2001-11-07 12:35:06 +0000 | [diff] [blame] | 1098 | fflush(stdout); |
| 1099 | } |
Miklos Szeredi | fe25def | 2001-12-20 15:38:05 +0000 | [diff] [blame] | 1100 | |
| 1101 | ctx->uid = in->uid; |
| 1102 | ctx->gid = in->gid; |
Miklos Szeredi | a181e61 | 2001-11-06 12:03:23 +0000 | [diff] [blame] | 1103 | |
| 1104 | argsize = cmd->buflen - sizeof(struct fuse_in_header); |
| 1105 | |
| 1106 | switch(in->opcode) { |
| 1107 | case FUSE_LOOKUP: |
| 1108 | do_lookup(f, in, (char *) inarg); |
| 1109 | break; |
| 1110 | |
Miklos Szeredi | a181e61 | 2001-11-06 12:03:23 +0000 | [diff] [blame] | 1111 | case FUSE_GETATTR: |
| 1112 | do_getattr(f, in); |
| 1113 | break; |
| 1114 | |
| 1115 | case FUSE_SETATTR: |
| 1116 | do_setattr(f, in, (struct fuse_setattr_in *) inarg); |
| 1117 | break; |
| 1118 | |
| 1119 | case FUSE_READLINK: |
| 1120 | do_readlink(f, in); |
| 1121 | break; |
| 1122 | |
| 1123 | case FUSE_GETDIR: |
| 1124 | do_getdir(f, in); |
| 1125 | break; |
| 1126 | |
| 1127 | case FUSE_MKNOD: |
| 1128 | do_mknod(f, in, (struct fuse_mknod_in *) inarg); |
| 1129 | break; |
| 1130 | |
| 1131 | case FUSE_MKDIR: |
| 1132 | do_mkdir(f, in, (struct fuse_mkdir_in *) inarg); |
| 1133 | break; |
| 1134 | |
| 1135 | case FUSE_UNLINK: |
Miklos Szeredi | b595861 | 2004-02-20 14:10:49 +0000 | [diff] [blame] | 1136 | do_unlink(f, in, (char *) inarg); |
| 1137 | break; |
| 1138 | |
Miklos Szeredi | a181e61 | 2001-11-06 12:03:23 +0000 | [diff] [blame] | 1139 | case FUSE_RMDIR: |
Miklos Szeredi | b595861 | 2004-02-20 14:10:49 +0000 | [diff] [blame] | 1140 | do_rmdir(f, in, (char *) inarg); |
Miklos Szeredi | a181e61 | 2001-11-06 12:03:23 +0000 | [diff] [blame] | 1141 | break; |
| 1142 | |
| 1143 | case FUSE_SYMLINK: |
| 1144 | do_symlink(f, in, (char *) inarg, |
| 1145 | ((char *) inarg) + strlen((char *) inarg) + 1); |
| 1146 | break; |
| 1147 | |
| 1148 | case FUSE_RENAME: |
| 1149 | do_rename(f, in, (struct fuse_rename_in *) inarg); |
| 1150 | break; |
| 1151 | |
| 1152 | case FUSE_LINK: |
| 1153 | do_link(f, in, (struct fuse_link_in *) inarg); |
| 1154 | break; |
| 1155 | |
| 1156 | case FUSE_OPEN: |
| 1157 | do_open(f, in, (struct fuse_open_in *) inarg); |
| 1158 | break; |
| 1159 | |
Miklos Szeredi | 9478e86 | 2002-12-11 09:50:26 +0000 | [diff] [blame] | 1160 | case FUSE_RELEASE: |
| 1161 | do_release(f, in, (struct fuse_open_in *) inarg); |
| 1162 | break; |
| 1163 | |
Miklos Szeredi | a181e61 | 2001-11-06 12:03:23 +0000 | [diff] [blame] | 1164 | case FUSE_READ: |
| 1165 | do_read(f, in, (struct fuse_read_in *) inarg); |
| 1166 | break; |
| 1167 | |
| 1168 | case FUSE_WRITE: |
| 1169 | do_write(f, in, (struct fuse_write_in *) inarg); |
| 1170 | break; |
| 1171 | |
Mark Glines | d84b39a | 2002-01-07 16:32:02 +0000 | [diff] [blame] | 1172 | case FUSE_STATFS: |
| 1173 | do_statfs(f, in); |
| 1174 | break; |
| 1175 | |
Miklos Szeredi | 5e43f2c | 2003-12-12 14:06:41 +0000 | [diff] [blame] | 1176 | case FUSE_FSYNC: |
| 1177 | do_fsync(f, in, (struct fuse_fsync_in *) inarg); |
| 1178 | break; |
| 1179 | |
Miklos Szeredi | 3ed8423 | 2004-03-30 15:17:26 +0000 | [diff] [blame^] | 1180 | case FUSE_SETXATTR: |
| 1181 | do_setxattr(f, in, (struct fuse_setxattr_in *) inarg); |
| 1182 | break; |
| 1183 | |
| 1184 | case FUSE_GETXATTR: |
| 1185 | do_getxattr(f, in, (struct fuse_getlistxattr_in *) inarg); |
| 1186 | break; |
| 1187 | |
| 1188 | case FUSE_LISTXATTR: |
| 1189 | do_listxattr(f, in, (struct fuse_getlistxattr_in *) inarg); |
| 1190 | break; |
| 1191 | |
| 1192 | case FUSE_REMOVEXATTR: |
| 1193 | do_removexattr(f, in, (char *) inarg); |
| 1194 | break; |
| 1195 | |
Miklos Szeredi | a181e61 | 2001-11-06 12:03:23 +0000 | [diff] [blame] | 1196 | default: |
Miklos Szeredi | 4369643 | 2001-11-18 19:15:05 +0000 | [diff] [blame] | 1197 | send_reply(f, in, -ENOSYS, NULL, 0); |
Miklos Szeredi | a181e61 | 2001-11-06 12:03:23 +0000 | [diff] [blame] | 1198 | } |
Miklos Szeredi | 4369643 | 2001-11-18 19:15:05 +0000 | [diff] [blame] | 1199 | |
| 1200 | free_cmd(cmd); |
Miklos Szeredi | a181e61 | 2001-11-06 12:03:23 +0000 | [diff] [blame] | 1201 | } |
| 1202 | |
Miklos Szeredi | fff56ab | 2001-11-16 10:12:59 +0000 | [diff] [blame] | 1203 | struct fuse_cmd *__fuse_read_cmd(struct fuse *f) |
Miklos Szeredi | 2df1c04 | 2001-11-06 15:07:17 +0000 | [diff] [blame] | 1204 | { |
Miklos Szeredi | fff56ab | 2001-11-16 10:12:59 +0000 | [diff] [blame] | 1205 | ssize_t res; |
Miklos Szeredi | fff56ab | 2001-11-16 10:12:59 +0000 | [diff] [blame] | 1206 | struct fuse_cmd *cmd; |
Miklos Szeredi | 99ddf0e | 2001-11-25 17:19:59 +0000 | [diff] [blame] | 1207 | struct fuse_in_header *in; |
| 1208 | void *inarg; |
Miklos Szeredi | fff56ab | 2001-11-16 10:12:59 +0000 | [diff] [blame] | 1209 | |
Miklos Szeredi | 4369643 | 2001-11-18 19:15:05 +0000 | [diff] [blame] | 1210 | cmd = (struct fuse_cmd *) malloc(sizeof(struct fuse_cmd)); |
| 1211 | cmd->buf = (char *) malloc(FUSE_MAX_IN); |
Miklos Szeredi | 99ddf0e | 2001-11-25 17:19:59 +0000 | [diff] [blame] | 1212 | in = (struct fuse_in_header *) cmd->buf; |
| 1213 | inarg = cmd->buf + sizeof(struct fuse_in_header); |
Miklos Szeredi | 4369643 | 2001-11-18 19:15:05 +0000 | [diff] [blame] | 1214 | |
Miklos Szeredi | 99ddf0e | 2001-11-25 17:19:59 +0000 | [diff] [blame] | 1215 | do { |
| 1216 | res = read(f->fd, cmd->buf, FUSE_MAX_IN); |
| 1217 | if(res == -1) { |
Miklos Szeredi | 0f48a26 | 2002-12-05 14:23:01 +0000 | [diff] [blame] | 1218 | free_cmd(cmd); |
Miklos Szeredi | 307242f | 2004-01-26 11:28:44 +0000 | [diff] [blame] | 1219 | if(f->exited || errno == EINTR) |
Miklos Szeredi | 0f48a26 | 2002-12-05 14:23:01 +0000 | [diff] [blame] | 1220 | return NULL; |
| 1221 | |
Miklos Szeredi | 99ddf0e | 2001-11-25 17:19:59 +0000 | [diff] [blame] | 1222 | /* ENODEV means we got unmounted, so we silenty return failure */ |
| 1223 | if(errno != ENODEV) { |
Miklos Szeredi | 99ddf0e | 2001-11-25 17:19:59 +0000 | [diff] [blame] | 1224 | /* BAD... This will happen again */ |
Miklos Szeredi | 0f48a26 | 2002-12-05 14:23:01 +0000 | [diff] [blame] | 1225 | perror("fuse: reading device"); |
Miklos Szeredi | 99ddf0e | 2001-11-25 17:19:59 +0000 | [diff] [blame] | 1226 | } |
Miklos Szeredi | 0f48a26 | 2002-12-05 14:23:01 +0000 | [diff] [blame] | 1227 | |
| 1228 | fuse_exit(f); |
Miklos Szeredi | 99ddf0e | 2001-11-25 17:19:59 +0000 | [diff] [blame] | 1229 | return NULL; |
Miklos Szeredi | 9624998 | 2001-11-21 12:21:19 +0000 | [diff] [blame] | 1230 | } |
Miklos Szeredi | 99ddf0e | 2001-11-25 17:19:59 +0000 | [diff] [blame] | 1231 | if((size_t) res < sizeof(struct fuse_in_header)) { |
Miklos Szeredi | 99ddf0e | 2001-11-25 17:19:59 +0000 | [diff] [blame] | 1232 | free_cmd(cmd); |
Miklos Szeredi | 0f48a26 | 2002-12-05 14:23:01 +0000 | [diff] [blame] | 1233 | /* Cannot happen */ |
| 1234 | fprintf(stderr, "short read on fuse device\n"); |
| 1235 | fuse_exit(f); |
Miklos Szeredi | 99ddf0e | 2001-11-25 17:19:59 +0000 | [diff] [blame] | 1236 | return NULL; |
| 1237 | } |
| 1238 | cmd->buflen = res; |
| 1239 | |
| 1240 | /* Forget is special, it can be done without messing with threads. */ |
| 1241 | if(in->opcode == FUSE_FORGET) |
| 1242 | do_forget(f, in, (struct fuse_forget_in *) inarg); |
| 1243 | |
| 1244 | } while(in->opcode == FUSE_FORGET); |
| 1245 | |
Miklos Szeredi | fff56ab | 2001-11-16 10:12:59 +0000 | [diff] [blame] | 1246 | return cmd; |
Miklos Szeredi | 2df1c04 | 2001-11-06 15:07:17 +0000 | [diff] [blame] | 1247 | } |
| 1248 | |
Miklos Szeredi | 85c74fc | 2001-10-28 19:44:14 +0000 | [diff] [blame] | 1249 | void fuse_loop(struct fuse *f) |
| 1250 | { |
Miklos Szeredi | c40748a | 2004-02-20 16:38:45 +0000 | [diff] [blame] | 1251 | if(f == NULL) |
| 1252 | return; |
| 1253 | |
Miklos Szeredi | 85c74fc | 2001-10-28 19:44:14 +0000 | [diff] [blame] | 1254 | while(1) { |
Miklos Szeredi | 0f48a26 | 2002-12-05 14:23:01 +0000 | [diff] [blame] | 1255 | struct fuse_cmd *cmd; |
| 1256 | |
| 1257 | if(f->exited) |
| 1258 | return; |
| 1259 | |
| 1260 | cmd = __fuse_read_cmd(f); |
Miklos Szeredi | fff56ab | 2001-11-16 10:12:59 +0000 | [diff] [blame] | 1261 | if(cmd == NULL) |
Miklos Szeredi | 0f48a26 | 2002-12-05 14:23:01 +0000 | [diff] [blame] | 1262 | continue; |
Miklos Szeredi | 85c74fc | 2001-10-28 19:44:14 +0000 | [diff] [blame] | 1263 | |
Miklos Szeredi | fff56ab | 2001-11-16 10:12:59 +0000 | [diff] [blame] | 1264 | __fuse_process_cmd(f, cmd); |
Miklos Szeredi | 85c74fc | 2001-10-28 19:44:14 +0000 | [diff] [blame] | 1265 | } |
| 1266 | } |
| 1267 | |
Miklos Szeredi | 0f48a26 | 2002-12-05 14:23:01 +0000 | [diff] [blame] | 1268 | void fuse_exit(struct fuse *f) |
| 1269 | { |
| 1270 | f->exited = 1; |
| 1271 | } |
| 1272 | |
Miklos Szeredi | 2e50d43 | 2001-12-20 12:17:25 +0000 | [diff] [blame] | 1273 | struct fuse_context *fuse_get_context(struct fuse *f) |
| 1274 | { |
| 1275 | if(f->getcontext) |
| 1276 | return f->getcontext(f); |
| 1277 | else |
| 1278 | return &f->context; |
| 1279 | } |
| 1280 | |
Miklos Szeredi | c40748a | 2004-02-20 16:38:45 +0000 | [diff] [blame] | 1281 | static int check_version(struct fuse *f) |
| 1282 | { |
| 1283 | int res; |
| 1284 | FILE *vf = fopen(FUSE_VERSION_FILE, "r"); |
| 1285 | if(vf == NULL) { |
| 1286 | fprintf(stderr, "fuse: kernel interface too old, need >= %i.%i\n", |
| 1287 | FUSE_KERNEL_VERSION, FUSE_KERNEL_MINOR_VERSION); |
| 1288 | return -1; |
| 1289 | } |
| 1290 | res = fscanf(vf, "%i.%i", &f->majorver, &f->minorver); |
| 1291 | fclose(vf); |
| 1292 | if(res != 2) { |
| 1293 | fprintf(stderr, "fuse: error reading %s\n", FUSE_VERSION_FILE); |
| 1294 | return -1; |
| 1295 | } |
| 1296 | if(f->majorver != FUSE_KERNEL_VERSION) { |
| 1297 | fprintf(stderr, "fuse: bad kernel interface major version: needs %i\n", |
| 1298 | FUSE_KERNEL_VERSION); |
| 1299 | return -1; |
| 1300 | } |
| 1301 | if(f->minorver < FUSE_KERNEL_MINOR_VERSION) { |
| 1302 | fprintf(stderr, "fuse: kernel interface too old: need >= %i.%i", |
| 1303 | FUSE_KERNEL_VERSION, FUSE_KERNEL_MINOR_VERSION); |
| 1304 | return -1; |
| 1305 | } |
| 1306 | |
| 1307 | return 0; |
| 1308 | } |
| 1309 | |
Miklos Szeredi | 2e50d43 | 2001-12-20 12:17:25 +0000 | [diff] [blame] | 1310 | 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] | 1311 | { |
Miklos Szeredi | 97c61e9 | 2001-11-07 12:09:43 +0000 | [diff] [blame] | 1312 | struct fuse *f; |
| 1313 | struct node *root; |
Miklos Szeredi | 85c74fc | 2001-10-28 19:44:14 +0000 | [diff] [blame] | 1314 | |
Miklos Szeredi | 97c61e9 | 2001-11-07 12:09:43 +0000 | [diff] [blame] | 1315 | f = (struct fuse *) calloc(1, sizeof(struct fuse)); |
Miklos Szeredi | 2df1c04 | 2001-11-06 15:07:17 +0000 | [diff] [blame] | 1316 | |
Miklos Szeredi | c40748a | 2004-02-20 16:38:45 +0000 | [diff] [blame] | 1317 | if(check_version(f) == -1) { |
| 1318 | free(f); |
| 1319 | return NULL; |
| 1320 | } |
| 1321 | |
Miklos Szeredi | a181e61 | 2001-11-06 12:03:23 +0000 | [diff] [blame] | 1322 | f->flags = flags; |
Miklos Szeredi | 8cffdb9 | 2001-11-09 14:49:18 +0000 | [diff] [blame] | 1323 | f->fd = fd; |
Miklos Szeredi | 97c61e9 | 2001-11-07 12:09:43 +0000 | [diff] [blame] | 1324 | f->ctr = 0; |
Miklos Szeredi | 76f6578 | 2004-02-19 16:55:40 +0000 | [diff] [blame] | 1325 | f->generation = 0; |
Miklos Szeredi | fff56ab | 2001-11-16 10:12:59 +0000 | [diff] [blame] | 1326 | /* FIXME: Dynamic hash table */ |
Miklos Szeredi | 97c61e9 | 2001-11-07 12:09:43 +0000 | [diff] [blame] | 1327 | f->name_table_size = 14057; |
| 1328 | f->name_table = (struct node **) |
| 1329 | calloc(1, sizeof(struct node *) * f->name_table_size); |
| 1330 | f->ino_table_size = 14057; |
| 1331 | f->ino_table = (struct node **) |
| 1332 | calloc(1, sizeof(struct node *) * f->ino_table_size); |
Miklos Szeredi | a181e61 | 2001-11-06 12:03:23 +0000 | [diff] [blame] | 1333 | pthread_mutex_init(&f->lock, NULL); |
Miklos Szeredi | 3323203 | 2001-11-19 17:55:51 +0000 | [diff] [blame] | 1334 | f->numworker = 0; |
| 1335 | f->numavail = 0; |
Miklos Szeredi | 2e50d43 | 2001-12-20 12:17:25 +0000 | [diff] [blame] | 1336 | f->op = *op; |
| 1337 | f->getcontext = NULL; |
| 1338 | f->context.uid = 0; |
| 1339 | f->context.gid = 0; |
Miklos Szeredi | 0f48a26 | 2002-12-05 14:23:01 +0000 | [diff] [blame] | 1340 | f->exited = 0; |
Miklos Szeredi | 85c74fc | 2001-10-28 19:44:14 +0000 | [diff] [blame] | 1341 | |
Miklos Szeredi | 97c61e9 | 2001-11-07 12:09:43 +0000 | [diff] [blame] | 1342 | root = (struct node *) calloc(1, sizeof(struct node)); |
Miklos Szeredi | 8cffdb9 | 2001-11-09 14:49:18 +0000 | [diff] [blame] | 1343 | root->mode = 0; |
Miklos Szeredi | 97c61e9 | 2001-11-07 12:09:43 +0000 | [diff] [blame] | 1344 | root->rdev = 0; |
| 1345 | root->name = strdup("/"); |
| 1346 | root->parent = 0; |
Miklos Szeredi | 76f6578 | 2004-02-19 16:55:40 +0000 | [diff] [blame] | 1347 | root->ino = FUSE_ROOT_INO; |
| 1348 | root->generation = 0; |
| 1349 | hash_ino(f, root); |
Miklos Szeredi | 97c61e9 | 2001-11-07 12:09:43 +0000 | [diff] [blame] | 1350 | |
Miklos Szeredi | 85c74fc | 2001-10-28 19:44:14 +0000 | [diff] [blame] | 1351 | return f; |
| 1352 | } |
| 1353 | |
Miklos Szeredi | 85c74fc | 2001-10-28 19:44:14 +0000 | [diff] [blame] | 1354 | void fuse_destroy(struct fuse *f) |
| 1355 | { |
Miklos Szeredi | 97c61e9 | 2001-11-07 12:09:43 +0000 | [diff] [blame] | 1356 | size_t i; |
Miklos Szeredi | 97c61e9 | 2001-11-07 12:09:43 +0000 | [diff] [blame] | 1357 | for(i = 0; i < f->ino_table_size; i++) { |
| 1358 | struct node *node; |
| 1359 | struct node *next; |
| 1360 | for(node = f->ino_table[i]; node != NULL; node = next) { |
| 1361 | next = node->ino_next; |
| 1362 | free_node(node); |
| 1363 | } |
| 1364 | } |
| 1365 | free(f->ino_table); |
| 1366 | free(f->name_table); |
Miklos Szeredi | a181e61 | 2001-11-06 12:03:23 +0000 | [diff] [blame] | 1367 | pthread_mutex_destroy(&f->lock); |
Miklos Szeredi | 97c61e9 | 2001-11-07 12:09:43 +0000 | [diff] [blame] | 1368 | free(f); |
Miklos Szeredi | 85c74fc | 2001-10-28 19:44:14 +0000 | [diff] [blame] | 1369 | } |