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 | |
Miklos Szeredi | cb26451 | 2004-06-23 18:52:50 +0000 | [diff] [blame^] | 9 | #include <config.h> |
Miklos Szeredi | 85c74fc | 2001-10-28 19:44:14 +0000 | [diff] [blame] | 10 | #include "fuse_i.h" |
| 11 | #include <linux/fuse.h> |
| 12 | |
| 13 | #include <string.h> |
Miklos Szeredi | 97c61e9 | 2001-11-07 12:09:43 +0000 | [diff] [blame] | 14 | #include <stdlib.h> |
Miklos Szeredi | 85c74fc | 2001-10-28 19:44:14 +0000 | [diff] [blame] | 15 | #include <unistd.h> |
Miklos Szeredi | 97c61e9 | 2001-11-07 12:09:43 +0000 | [diff] [blame] | 16 | #include <limits.h> |
Miklos Szeredi | 85c74fc | 2001-10-28 19:44:14 +0000 | [diff] [blame] | 17 | #include <errno.h> |
Miklos Szeredi | 019b4e9 | 2001-12-26 18:08:09 +0000 | [diff] [blame] | 18 | #include <sys/param.h> |
Miklos Szeredi | 85c74fc | 2001-10-28 19:44:14 +0000 | [diff] [blame] | 19 | |
Miklos Szeredi | 97c61e9 | 2001-11-07 12:09:43 +0000 | [diff] [blame] | 20 | #define FUSE_MAX_PATH 4096 |
Miklos Szeredi | 6bf8b68 | 2002-10-28 08:49:39 +0000 | [diff] [blame] | 21 | #define PARAM(inarg) (((char *)(inarg)) + sizeof(*inarg)) |
Miklos Szeredi | 85c74fc | 2001-10-28 19:44:14 +0000 | [diff] [blame] | 22 | |
Miklos Szeredi | 254d5ed | 2004-03-02 11:11:24 +0000 | [diff] [blame] | 23 | #define ENTRY_REVALIDATE_TIME 1 /* sec */ |
| 24 | #define ATTR_REVALIDATE_TIME 1 /* sec */ |
| 25 | |
Miklos Szeredi | c8ba237 | 2002-12-10 12:26:00 +0000 | [diff] [blame] | 26 | static const char *opname(enum fuse_opcode opcode) |
| 27 | { |
Miklos Szeredi | 7eafcce | 2004-06-19 22:42:38 +0000 | [diff] [blame] | 28 | switch (opcode) { |
Miklos Szeredi | 3ed8423 | 2004-03-30 15:17:26 +0000 | [diff] [blame] | 29 | case FUSE_LOOKUP: return "LOOKUP"; |
| 30 | case FUSE_FORGET: return "FORGET"; |
| 31 | case FUSE_GETATTR: return "GETATTR"; |
| 32 | case FUSE_SETATTR: return "SETATTR"; |
| 33 | case FUSE_READLINK: return "READLINK"; |
| 34 | case FUSE_SYMLINK: return "SYMLINK"; |
| 35 | case FUSE_GETDIR: return "GETDIR"; |
| 36 | case FUSE_MKNOD: return "MKNOD"; |
| 37 | case FUSE_MKDIR: return "MKDIR"; |
| 38 | case FUSE_UNLINK: return "UNLINK"; |
| 39 | case FUSE_RMDIR: return "RMDIR"; |
| 40 | case FUSE_RENAME: return "RENAME"; |
| 41 | case FUSE_LINK: return "LINK"; |
| 42 | case FUSE_OPEN: return "OPEN"; |
| 43 | case FUSE_READ: return "READ"; |
| 44 | case FUSE_WRITE: return "WRITE"; |
| 45 | case FUSE_STATFS: return "STATFS"; |
Miklos Szeredi | 99f2074 | 2004-05-19 08:01:10 +0000 | [diff] [blame] | 46 | case FUSE_FLUSH: return "FLUSH"; |
Miklos Szeredi | 3ed8423 | 2004-03-30 15:17:26 +0000 | [diff] [blame] | 47 | case FUSE_RELEASE: return "RELEASE"; |
| 48 | case FUSE_FSYNC: return "FSYNC"; |
| 49 | case FUSE_SETXATTR: return "SETXATTR"; |
| 50 | case FUSE_GETXATTR: return "GETXATTR"; |
| 51 | case FUSE_LISTXATTR: return "LISTXATTR"; |
| 52 | case FUSE_REMOVEXATTR: return "REMOVEXATTR"; |
Miklos Szeredi | 99f2074 | 2004-05-19 08:01:10 +0000 | [diff] [blame] | 53 | default: return "???"; |
Miklos Szeredi | c8ba237 | 2002-12-10 12:26:00 +0000 | [diff] [blame] | 54 | } |
| 55 | } |
| 56 | |
Miklos Szeredi | 99ddf0e | 2001-11-25 17:19:59 +0000 | [diff] [blame] | 57 | static inline void inc_avail(struct fuse *f) |
| 58 | { |
| 59 | pthread_mutex_lock(&f->lock); |
| 60 | f->numavail ++; |
| 61 | pthread_mutex_unlock(&f->lock); |
| 62 | } |
| 63 | |
| 64 | static inline void dec_avail(struct fuse *f) |
| 65 | { |
| 66 | pthread_mutex_lock(&f->lock); |
| 67 | f->numavail --; |
| 68 | pthread_mutex_unlock(&f->lock); |
| 69 | } |
| 70 | |
Miklos Szeredi | 97c61e9 | 2001-11-07 12:09:43 +0000 | [diff] [blame] | 71 | static struct node *__get_node(struct fuse *f, fino_t ino) |
Miklos Szeredi | a181e61 | 2001-11-06 12:03:23 +0000 | [diff] [blame] | 72 | { |
Miklos Szeredi | 97c61e9 | 2001-11-07 12:09:43 +0000 | [diff] [blame] | 73 | size_t hash = ino % f->ino_table_size; |
| 74 | struct node *node; |
| 75 | |
Miklos Szeredi | 7eafcce | 2004-06-19 22:42:38 +0000 | [diff] [blame] | 76 | for (node = f->ino_table[hash]; node != NULL; node = node->ino_next) |
| 77 | if (node->ino == ino) |
Miklos Szeredi | 97c61e9 | 2001-11-07 12:09:43 +0000 | [diff] [blame] | 78 | return node; |
| 79 | |
| 80 | return NULL; |
Miklos Szeredi | a181e61 | 2001-11-06 12:03:23 +0000 | [diff] [blame] | 81 | } |
| 82 | |
Miklos Szeredi | 97c61e9 | 2001-11-07 12:09:43 +0000 | [diff] [blame] | 83 | static struct node *get_node(struct fuse *f, fino_t ino) |
Miklos Szeredi | a181e61 | 2001-11-06 12:03:23 +0000 | [diff] [blame] | 84 | { |
Miklos Szeredi | 97c61e9 | 2001-11-07 12:09:43 +0000 | [diff] [blame] | 85 | struct node *node = __get_node(f, ino); |
Miklos Szeredi | 7eafcce | 2004-06-19 22:42:38 +0000 | [diff] [blame] | 86 | if (node != NULL) |
Miklos Szeredi | 97c61e9 | 2001-11-07 12:09:43 +0000 | [diff] [blame] | 87 | return node; |
| 88 | |
| 89 | fprintf(stderr, "fuse internal error: inode %lu not found\n", ino); |
| 90 | abort(); |
Miklos Szeredi | a181e61 | 2001-11-06 12:03:23 +0000 | [diff] [blame] | 91 | } |
| 92 | |
Miklos Szeredi | 76f6578 | 2004-02-19 16:55:40 +0000 | [diff] [blame] | 93 | static void hash_ino(struct fuse *f, struct node *node) |
Miklos Szeredi | 85c74fc | 2001-10-28 19:44:14 +0000 | [diff] [blame] | 94 | { |
Miklos Szeredi | 76f6578 | 2004-02-19 16:55:40 +0000 | [diff] [blame] | 95 | size_t hash = node->ino % f->ino_table_size; |
Miklos Szeredi | 97c61e9 | 2001-11-07 12:09:43 +0000 | [diff] [blame] | 96 | node->ino_next = f->ino_table[hash]; |
| 97 | f->ino_table[hash] = node; |
Miklos Szeredi | 85c74fc | 2001-10-28 19:44:14 +0000 | [diff] [blame] | 98 | } |
| 99 | |
Miklos Szeredi | 97c61e9 | 2001-11-07 12:09:43 +0000 | [diff] [blame] | 100 | static void unhash_ino(struct fuse *f, struct node *node) |
Miklos Szeredi | 85c74fc | 2001-10-28 19:44:14 +0000 | [diff] [blame] | 101 | { |
Miklos Szeredi | 97c61e9 | 2001-11-07 12:09:43 +0000 | [diff] [blame] | 102 | size_t hash = node->ino % f->ino_table_size; |
| 103 | struct node **nodep = &f->ino_table[hash]; |
| 104 | |
Miklos Szeredi | 7eafcce | 2004-06-19 22:42:38 +0000 | [diff] [blame] | 105 | for (; *nodep != NULL; nodep = &(*nodep)->ino_next) |
| 106 | if (*nodep == node) { |
Miklos Szeredi | 97c61e9 | 2001-11-07 12:09:43 +0000 | [diff] [blame] | 107 | *nodep = node->ino_next; |
| 108 | return; |
| 109 | } |
Miklos Szeredi | 85c74fc | 2001-10-28 19:44:14 +0000 | [diff] [blame] | 110 | } |
| 111 | |
Miklos Szeredi | 97c61e9 | 2001-11-07 12:09:43 +0000 | [diff] [blame] | 112 | static fino_t next_ino(struct fuse *f) |
| 113 | { |
Miklos Szeredi | 76f6578 | 2004-02-19 16:55:40 +0000 | [diff] [blame] | 114 | do { |
| 115 | f->ctr++; |
Miklos Szeredi | 7eafcce | 2004-06-19 22:42:38 +0000 | [diff] [blame] | 116 | if (!f->ctr) |
Miklos Szeredi | 76f6578 | 2004-02-19 16:55:40 +0000 | [diff] [blame] | 117 | f->generation ++; |
Miklos Szeredi | 7eafcce | 2004-06-19 22:42:38 +0000 | [diff] [blame] | 118 | } while (f->ctr == 0 || __get_node(f, f->ctr) != NULL); |
Miklos Szeredi | 97c61e9 | 2001-11-07 12:09:43 +0000 | [diff] [blame] | 119 | return f->ctr; |
| 120 | } |
| 121 | |
| 122 | static void free_node(struct node *node) |
| 123 | { |
| 124 | free(node->name); |
| 125 | free(node); |
| 126 | } |
| 127 | |
| 128 | static unsigned int name_hash(struct fuse *f, fino_t parent, const char *name) |
| 129 | { |
| 130 | unsigned int hash = *name; |
| 131 | |
Miklos Szeredi | 7eafcce | 2004-06-19 22:42:38 +0000 | [diff] [blame] | 132 | if (hash) |
| 133 | for (name += 1; *name != '\0'; name++) |
Miklos Szeredi | 97c61e9 | 2001-11-07 12:09:43 +0000 | [diff] [blame] | 134 | hash = (hash << 5) - hash + *name; |
| 135 | |
| 136 | return (hash + parent) % f->name_table_size; |
Miklos Szeredi | 85c74fc | 2001-10-28 19:44:14 +0000 | [diff] [blame] | 137 | } |
| 138 | |
Miklos Szeredi | 19dff1b | 2001-10-30 15:06:52 +0000 | [diff] [blame] | 139 | static struct node *lookup_node(struct fuse *f, fino_t parent, |
| 140 | const char *name) |
| 141 | { |
Miklos Szeredi | 97c61e9 | 2001-11-07 12:09:43 +0000 | [diff] [blame] | 142 | size_t hash = name_hash(f, parent, name); |
| 143 | struct node *node; |
Miklos Szeredi | 19dff1b | 2001-10-30 15:06:52 +0000 | [diff] [blame] | 144 | |
Miklos Szeredi | 7eafcce | 2004-06-19 22:42:38 +0000 | [diff] [blame] | 145 | for (node = f->name_table[hash]; node != NULL; node = node->name_next) |
| 146 | if (node->parent == parent && strcmp(node->name, name) == 0) |
Miklos Szeredi | 97c61e9 | 2001-11-07 12:09:43 +0000 | [diff] [blame] | 147 | return node; |
Miklos Szeredi | 19dff1b | 2001-10-30 15:06:52 +0000 | [diff] [blame] | 148 | |
Miklos Szeredi | 97c61e9 | 2001-11-07 12:09:43 +0000 | [diff] [blame] | 149 | return NULL; |
Miklos Szeredi | 19dff1b | 2001-10-30 15:06:52 +0000 | [diff] [blame] | 150 | } |
| 151 | |
Miklos Szeredi | 97c61e9 | 2001-11-07 12:09:43 +0000 | [diff] [blame] | 152 | 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] | 153 | const char *name) |
Miklos Szeredi | 5e18348 | 2001-10-31 14:52:35 +0000 | [diff] [blame] | 154 | { |
Miklos Szeredi | 97c61e9 | 2001-11-07 12:09:43 +0000 | [diff] [blame] | 155 | size_t hash = name_hash(f, parent, name); |
Miklos Szeredi | a181e61 | 2001-11-06 12:03:23 +0000 | [diff] [blame] | 156 | node->parent = parent; |
Miklos Szeredi | 97c61e9 | 2001-11-07 12:09:43 +0000 | [diff] [blame] | 157 | node->name = strdup(name); |
| 158 | node->name_next = f->name_table[hash]; |
| 159 | f->name_table[hash] = node; |
Miklos Szeredi | 5e18348 | 2001-10-31 14:52:35 +0000 | [diff] [blame] | 160 | } |
| 161 | |
Miklos Szeredi | 97c61e9 | 2001-11-07 12:09:43 +0000 | [diff] [blame] | 162 | static void unhash_name(struct fuse *f, struct node *node) |
Miklos Szeredi | a181e61 | 2001-11-06 12:03:23 +0000 | [diff] [blame] | 163 | { |
Miklos Szeredi | 7eafcce | 2004-06-19 22:42:38 +0000 | [diff] [blame] | 164 | if (node->name != NULL) { |
Miklos Szeredi | 97c61e9 | 2001-11-07 12:09:43 +0000 | [diff] [blame] | 165 | size_t hash = name_hash(f, node->parent, node->name); |
| 166 | struct node **nodep = &f->name_table[hash]; |
| 167 | |
Miklos Szeredi | 7eafcce | 2004-06-19 22:42:38 +0000 | [diff] [blame] | 168 | for (; *nodep != NULL; nodep = &(*nodep)->name_next) |
| 169 | if (*nodep == node) { |
Miklos Szeredi | 97c61e9 | 2001-11-07 12:09:43 +0000 | [diff] [blame] | 170 | *nodep = node->name_next; |
| 171 | node->name_next = NULL; |
| 172 | free(node->name); |
| 173 | node->name = NULL; |
| 174 | node->parent = 0; |
| 175 | return; |
| 176 | } |
| 177 | fprintf(stderr, "fuse internal error: unable to unhash node: %lu\n", |
| 178 | node->ino); |
| 179 | abort(); |
Miklos Szeredi | a181e61 | 2001-11-06 12:03:23 +0000 | [diff] [blame] | 180 | } |
| 181 | } |
| 182 | |
Miklos Szeredi | 76f6578 | 2004-02-19 16:55:40 +0000 | [diff] [blame] | 183 | static struct node *find_node(struct fuse *f, fino_t parent, char *name, |
| 184 | struct fuse_attr *attr, int version) |
Miklos Szeredi | 5e18348 | 2001-10-31 14:52:35 +0000 | [diff] [blame] | 185 | { |
| 186 | struct node *node; |
Miklos Szeredi | a181e61 | 2001-11-06 12:03:23 +0000 | [diff] [blame] | 187 | int mode = attr->mode & S_IFMT; |
| 188 | int rdev = 0; |
| 189 | |
Miklos Szeredi | 7eafcce | 2004-06-19 22:42:38 +0000 | [diff] [blame] | 190 | if (S_ISCHR(mode) || S_ISBLK(mode)) |
Miklos Szeredi | a181e61 | 2001-11-06 12:03:23 +0000 | [diff] [blame] | 191 | rdev = attr->rdev; |
Miklos Szeredi | 5e18348 | 2001-10-31 14:52:35 +0000 | [diff] [blame] | 192 | |
Miklos Szeredi | a181e61 | 2001-11-06 12:03:23 +0000 | [diff] [blame] | 193 | pthread_mutex_lock(&f->lock); |
Miklos Szeredi | 5e18348 | 2001-10-31 14:52:35 +0000 | [diff] [blame] | 194 | node = lookup_node(f, parent, name); |
Miklos Szeredi | 7eafcce | 2004-06-19 22:42:38 +0000 | [diff] [blame] | 195 | if (node != NULL) { |
| 196 | if (node->mode == mode && node->rdev == rdev) |
Miklos Szeredi | a181e61 | 2001-11-06 12:03:23 +0000 | [diff] [blame] | 197 | goto out; |
| 198 | |
Miklos Szeredi | 97c61e9 | 2001-11-07 12:09:43 +0000 | [diff] [blame] | 199 | unhash_name(f, node); |
Miklos Szeredi | 5e18348 | 2001-10-31 14:52:35 +0000 | [diff] [blame] | 200 | } |
| 201 | |
Miklos Szeredi | 97c61e9 | 2001-11-07 12:09:43 +0000 | [diff] [blame] | 202 | node = (struct node *) calloc(1, sizeof(struct node)); |
Miklos Szeredi | a181e61 | 2001-11-06 12:03:23 +0000 | [diff] [blame] | 203 | node->mode = mode; |
Miklos Szeredi | 97c61e9 | 2001-11-07 12:09:43 +0000 | [diff] [blame] | 204 | node->rdev = rdev; |
Miklos Szeredi | 76f6578 | 2004-02-19 16:55:40 +0000 | [diff] [blame] | 205 | node->ino = next_ino(f); |
| 206 | node->generation = f->generation; |
| 207 | hash_ino(f, node); |
Miklos Szeredi | 97c61e9 | 2001-11-07 12:09:43 +0000 | [diff] [blame] | 208 | hash_name(f, node, parent, name); |
Miklos Szeredi | a181e61 | 2001-11-06 12:03:23 +0000 | [diff] [blame] | 209 | |
| 210 | out: |
| 211 | node->version = version; |
| 212 | pthread_mutex_unlock(&f->lock); |
Miklos Szeredi | 76f6578 | 2004-02-19 16:55:40 +0000 | [diff] [blame] | 213 | return node; |
Miklos Szeredi | 5e18348 | 2001-10-31 14:52:35 +0000 | [diff] [blame] | 214 | } |
| 215 | |
Miklos Szeredi | 97c61e9 | 2001-11-07 12:09:43 +0000 | [diff] [blame] | 216 | static char *add_name(char *buf, char *s, const char *name) |
Miklos Szeredi | 85c74fc | 2001-10-28 19:44:14 +0000 | [diff] [blame] | 217 | { |
Miklos Szeredi | 97c61e9 | 2001-11-07 12:09:43 +0000 | [diff] [blame] | 218 | size_t len = strlen(name); |
| 219 | s -= len; |
Miklos Szeredi | 7eafcce | 2004-06-19 22:42:38 +0000 | [diff] [blame] | 220 | if (s <= buf) { |
Miklos Szeredi | 97c61e9 | 2001-11-07 12:09:43 +0000 | [diff] [blame] | 221 | fprintf(stderr, "fuse: path too long: ...%s\n", s + len); |
| 222 | return NULL; |
Miklos Szeredi | 85c74fc | 2001-10-28 19:44:14 +0000 | [diff] [blame] | 223 | } |
Miklos Szeredi | 97c61e9 | 2001-11-07 12:09:43 +0000 | [diff] [blame] | 224 | strncpy(s, name, len); |
| 225 | s--; |
| 226 | *s = '/'; |
Miklos Szeredi | 85c74fc | 2001-10-28 19:44:14 +0000 | [diff] [blame] | 227 | |
Miklos Szeredi | 97c61e9 | 2001-11-07 12:09:43 +0000 | [diff] [blame] | 228 | return s; |
Miklos Szeredi | 85c74fc | 2001-10-28 19:44:14 +0000 | [diff] [blame] | 229 | } |
| 230 | |
Miklos Szeredi | a181e61 | 2001-11-06 12:03:23 +0000 | [diff] [blame] | 231 | 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] | 232 | { |
Miklos Szeredi | 97c61e9 | 2001-11-07 12:09:43 +0000 | [diff] [blame] | 233 | char buf[FUSE_MAX_PATH]; |
| 234 | char *s = buf + FUSE_MAX_PATH - 1; |
| 235 | struct node *node; |
Miklos Szeredi | 5e18348 | 2001-10-31 14:52:35 +0000 | [diff] [blame] | 236 | |
Miklos Szeredi | 97c61e9 | 2001-11-07 12:09:43 +0000 | [diff] [blame] | 237 | *s = '\0'; |
Miklos Szeredi | a181e61 | 2001-11-06 12:03:23 +0000 | [diff] [blame] | 238 | |
Miklos Szeredi | 7eafcce | 2004-06-19 22:42:38 +0000 | [diff] [blame] | 239 | if (name != NULL) { |
Miklos Szeredi | 97c61e9 | 2001-11-07 12:09:43 +0000 | [diff] [blame] | 240 | s = add_name(buf, s, name); |
Miklos Szeredi | 7eafcce | 2004-06-19 22:42:38 +0000 | [diff] [blame] | 241 | if (s == NULL) |
Miklos Szeredi | 97c61e9 | 2001-11-07 12:09:43 +0000 | [diff] [blame] | 242 | return NULL; |
| 243 | } |
| 244 | |
| 245 | pthread_mutex_lock(&f->lock); |
Miklos Szeredi | 7eafcce | 2004-06-19 22:42:38 +0000 | [diff] [blame] | 246 | for (node = get_node(f, ino); node->ino != FUSE_ROOT_INO; |
Miklos Szeredi | 97c61e9 | 2001-11-07 12:09:43 +0000 | [diff] [blame] | 247 | node = get_node(f, node->parent)) { |
Miklos Szeredi | 7eafcce | 2004-06-19 22:42:38 +0000 | [diff] [blame] | 248 | if (node->name == NULL) { |
Miklos Szeredi | 97c61e9 | 2001-11-07 12:09:43 +0000 | [diff] [blame] | 249 | s = NULL; |
| 250 | break; |
| 251 | } |
| 252 | |
| 253 | s = add_name(buf, s, node->name); |
Miklos Szeredi | 7eafcce | 2004-06-19 22:42:38 +0000 | [diff] [blame] | 254 | if (s == NULL) |
Miklos Szeredi | 97c61e9 | 2001-11-07 12:09:43 +0000 | [diff] [blame] | 255 | break; |
| 256 | } |
| 257 | pthread_mutex_unlock(&f->lock); |
| 258 | |
Miklos Szeredi | 7eafcce | 2004-06-19 22:42:38 +0000 | [diff] [blame] | 259 | if (s == NULL) |
Miklos Szeredi | 5e18348 | 2001-10-31 14:52:35 +0000 | [diff] [blame] | 260 | return NULL; |
Miklos Szeredi | 7eafcce | 2004-06-19 22:42:38 +0000 | [diff] [blame] | 261 | else if (*s == '\0') |
Miklos Szeredi | 97c61e9 | 2001-11-07 12:09:43 +0000 | [diff] [blame] | 262 | return strdup("/"); |
| 263 | else |
| 264 | return strdup(s); |
| 265 | } |
Miklos Szeredi | a181e61 | 2001-11-06 12:03:23 +0000 | [diff] [blame] | 266 | |
Miklos Szeredi | 97c61e9 | 2001-11-07 12:09:43 +0000 | [diff] [blame] | 267 | static char *get_path(struct fuse *f, fino_t ino) |
| 268 | { |
| 269 | return get_path_name(f, ino, NULL); |
Miklos Szeredi | b483c93 | 2001-10-29 14:57:57 +0000 | [diff] [blame] | 270 | } |
| 271 | |
Miklos Szeredi | a181e61 | 2001-11-06 12:03:23 +0000 | [diff] [blame] | 272 | static void destroy_node(struct fuse *f, fino_t ino, int version) |
Miklos Szeredi | 85c74fc | 2001-10-28 19:44:14 +0000 | [diff] [blame] | 273 | { |
Miklos Szeredi | a181e61 | 2001-11-06 12:03:23 +0000 | [diff] [blame] | 274 | struct node *node; |
| 275 | |
| 276 | pthread_mutex_lock(&f->lock); |
Miklos Szeredi | 97c61e9 | 2001-11-07 12:09:43 +0000 | [diff] [blame] | 277 | node = get_node(f, ino); |
Miklos Szeredi | 7eafcce | 2004-06-19 22:42:38 +0000 | [diff] [blame] | 278 | if (node->version == version && ino != FUSE_ROOT_INO) { |
Miklos Szeredi | 97c61e9 | 2001-11-07 12:09:43 +0000 | [diff] [blame] | 279 | unhash_name(f, node); |
| 280 | unhash_ino(f, node); |
Miklos Szeredi | a181e61 | 2001-11-06 12:03:23 +0000 | [diff] [blame] | 281 | free_node(node); |
| 282 | } |
| 283 | pthread_mutex_unlock(&f->lock); |
| 284 | |
Miklos Szeredi | 85c74fc | 2001-10-28 19:44:14 +0000 | [diff] [blame] | 285 | } |
| 286 | |
Miklos Szeredi | 5e18348 | 2001-10-31 14:52:35 +0000 | [diff] [blame] | 287 | static void remove_node(struct fuse *f, fino_t dir, const char *name) |
| 288 | { |
Miklos Szeredi | a181e61 | 2001-11-06 12:03:23 +0000 | [diff] [blame] | 289 | struct node *node; |
| 290 | |
| 291 | pthread_mutex_lock(&f->lock); |
| 292 | node = lookup_node(f, dir, name); |
Miklos Szeredi | 7eafcce | 2004-06-19 22:42:38 +0000 | [diff] [blame] | 293 | if (node == NULL) { |
Miklos Szeredi | 97c61e9 | 2001-11-07 12:09:43 +0000 | [diff] [blame] | 294 | fprintf(stderr, "fuse internal error: unable to remove node %lu/%s\n", |
| 295 | dir, name); |
| 296 | abort(); |
| 297 | } |
| 298 | unhash_name(f, node); |
Miklos Szeredi | a181e61 | 2001-11-06 12:03:23 +0000 | [diff] [blame] | 299 | pthread_mutex_unlock(&f->lock); |
Miklos Szeredi | 5e18348 | 2001-10-31 14:52:35 +0000 | [diff] [blame] | 300 | } |
| 301 | |
Miklos Szeredi | 19dff1b | 2001-10-30 15:06:52 +0000 | [diff] [blame] | 302 | static void rename_node(struct fuse *f, fino_t olddir, const char *oldname, |
| 303 | fino_t newdir, const char *newname) |
| 304 | { |
Miklos Szeredi | a181e61 | 2001-11-06 12:03:23 +0000 | [diff] [blame] | 305 | struct node *node; |
| 306 | struct node *newnode; |
| 307 | |
| 308 | pthread_mutex_lock(&f->lock); |
| 309 | node = lookup_node(f, olddir, oldname); |
| 310 | newnode = lookup_node(f, newdir, newname); |
Miklos Szeredi | 7eafcce | 2004-06-19 22:42:38 +0000 | [diff] [blame] | 311 | if (node == NULL) { |
Miklos Szeredi | 97c61e9 | 2001-11-07 12:09:43 +0000 | [diff] [blame] | 312 | fprintf(stderr, "fuse internal error: unable to rename node %lu/%s\n", |
| 313 | olddir, oldname); |
| 314 | abort(); |
| 315 | } |
Miklos Szeredi | 19dff1b | 2001-10-30 15:06:52 +0000 | [diff] [blame] | 316 | |
Miklos Szeredi | 7eafcce | 2004-06-19 22:42:38 +0000 | [diff] [blame] | 317 | if (newnode != NULL) |
Miklos Szeredi | 97c61e9 | 2001-11-07 12:09:43 +0000 | [diff] [blame] | 318 | unhash_name(f, newnode); |
Miklos Szeredi | 19dff1b | 2001-10-30 15:06:52 +0000 | [diff] [blame] | 319 | |
Miklos Szeredi | 97c61e9 | 2001-11-07 12:09:43 +0000 | [diff] [blame] | 320 | unhash_name(f, node); |
| 321 | hash_name(f, node, newdir, newname); |
Miklos Szeredi | a181e61 | 2001-11-06 12:03:23 +0000 | [diff] [blame] | 322 | pthread_mutex_unlock(&f->lock); |
Miklos Szeredi | 19dff1b | 2001-10-30 15:06:52 +0000 | [diff] [blame] | 323 | } |
| 324 | |
Miklos Szeredi | 85c74fc | 2001-10-28 19:44:14 +0000 | [diff] [blame] | 325 | static void convert_stat(struct stat *stbuf, struct fuse_attr *attr) |
| 326 | { |
Miklos Szeredi | b595861 | 2004-02-20 14:10:49 +0000 | [diff] [blame] | 327 | attr->mode = stbuf->st_mode; |
| 328 | attr->nlink = stbuf->st_nlink; |
| 329 | attr->uid = stbuf->st_uid; |
| 330 | attr->gid = stbuf->st_gid; |
| 331 | attr->rdev = stbuf->st_rdev; |
| 332 | attr->size = stbuf->st_size; |
| 333 | attr->blocks = stbuf->st_blocks; |
| 334 | attr->atime = stbuf->st_atime; |
Miklos Szeredi | b595861 | 2004-02-20 14:10:49 +0000 | [diff] [blame] | 335 | attr->mtime = stbuf->st_mtime; |
Miklos Szeredi | b595861 | 2004-02-20 14:10:49 +0000 | [diff] [blame] | 336 | attr->ctime = stbuf->st_ctime; |
Miklos Szeredi | cb26451 | 2004-06-23 18:52:50 +0000 | [diff] [blame^] | 337 | #ifdef HAVE_STRUCT_STAT_ST_ATIM |
| 338 | attr->atimensec = stbuf->st_atim.tv_nsec; |
| 339 | attr->mtimensec = stbuf->st_mtim.tv_nsec; |
Miklos Szeredi | b595861 | 2004-02-20 14:10:49 +0000 | [diff] [blame] | 340 | attr->ctimensec = stbuf->st_ctim.tv_nsec; |
Miklos Szeredi | cb26451 | 2004-06-23 18:52:50 +0000 | [diff] [blame^] | 341 | #endif |
Miklos Szeredi | 85c74fc | 2001-10-28 19:44:14 +0000 | [diff] [blame] | 342 | } |
| 343 | |
Miklos Szeredi | a181e61 | 2001-11-06 12:03:23 +0000 | [diff] [blame] | 344 | static int fill_dir(struct fuse_dirhandle *dh, char *name, int type) |
Miklos Szeredi | 85c74fc | 2001-10-28 19:44:14 +0000 | [diff] [blame] | 345 | { |
| 346 | struct fuse_dirent dirent; |
| 347 | size_t reclen; |
| 348 | size_t res; |
| 349 | |
Miklos Szeredi | 4369643 | 2001-11-18 19:15:05 +0000 | [diff] [blame] | 350 | dirent.ino = (unsigned long) -1; |
Miklos Szeredi | 85c74fc | 2001-10-28 19:44:14 +0000 | [diff] [blame] | 351 | dirent.namelen = strlen(name); |
| 352 | strncpy(dirent.name, name, sizeof(dirent.name)); |
| 353 | dirent.type = type; |
| 354 | reclen = FUSE_DIRENT_SIZE(&dirent); |
| 355 | res = fwrite(&dirent, reclen, 1, dh->fp); |
Miklos Szeredi | 7eafcce | 2004-06-19 22:42:38 +0000 | [diff] [blame] | 356 | if (res == 0) { |
Miklos Szeredi | 9624998 | 2001-11-21 12:21:19 +0000 | [diff] [blame] | 357 | perror("fuse: writing directory file"); |
Miklos Szeredi | 85c74fc | 2001-10-28 19:44:14 +0000 | [diff] [blame] | 358 | return -EIO; |
| 359 | } |
| 360 | return 0; |
| 361 | } |
| 362 | |
Miklos Szeredi | 40b9a5a | 2002-12-10 16:09:02 +0000 | [diff] [blame] | 363 | 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] | 364 | { |
| 365 | int res; |
| 366 | |
Miklos Szeredi | 7eafcce | 2004-06-19 22:42:38 +0000 | [diff] [blame] | 367 | if ((f->flags & FUSE_DEBUG)) { |
Miklos Szeredi | 4369643 | 2001-11-18 19:15:05 +0000 | [diff] [blame] | 368 | struct fuse_out_header *out = (struct fuse_out_header *) outbuf; |
| 369 | printf(" unique: %i, error: %i (%s), outsize: %i\n", out->unique, |
| 370 | out->error, strerror(-out->error), outsize); |
| 371 | fflush(stdout); |
| 372 | } |
Miklos Szeredi | 99ddf0e | 2001-11-25 17:19:59 +0000 | [diff] [blame] | 373 | |
Miklos Szeredi | 4e71c9f | 2004-02-09 12:05:14 +0000 | [diff] [blame] | 374 | /* This needs to be done before the reply, otherwise the scheduler |
| 375 | could play tricks with us, and only let the counter be increased |
Miklos Szeredi | 99ddf0e | 2001-11-25 17:19:59 +0000 | [diff] [blame] | 376 | long after the operation is done */ |
| 377 | inc_avail(f); |
| 378 | |
Miklos Szeredi | 4369643 | 2001-11-18 19:15:05 +0000 | [diff] [blame] | 379 | res = write(f->fd, outbuf, outsize); |
Miklos Szeredi | 7eafcce | 2004-06-19 22:42:38 +0000 | [diff] [blame] | 380 | if (res == -1) { |
Miklos Szeredi | 4369643 | 2001-11-18 19:15:05 +0000 | [diff] [blame] | 381 | /* ENOENT means the operation was interrupted */ |
Miklos Szeredi | 7eafcce | 2004-06-19 22:42:38 +0000 | [diff] [blame] | 382 | if (!f->exited && errno != ENOENT) |
Miklos Szeredi | 9624998 | 2001-11-21 12:21:19 +0000 | [diff] [blame] | 383 | perror("fuse: writing device"); |
Miklos Szeredi | 40b9a5a | 2002-12-10 16:09:02 +0000 | [diff] [blame] | 384 | return -errno; |
Miklos Szeredi | 4369643 | 2001-11-18 19:15:05 +0000 | [diff] [blame] | 385 | } |
Miklos Szeredi | 40b9a5a | 2002-12-10 16:09:02 +0000 | [diff] [blame] | 386 | return 0; |
Miklos Szeredi | 4369643 | 2001-11-18 19:15:05 +0000 | [diff] [blame] | 387 | } |
| 388 | |
Miklos Szeredi | 40b9a5a | 2002-12-10 16:09:02 +0000 | [diff] [blame] | 389 | static int send_reply(struct fuse *f, struct fuse_in_header *in, int error, |
| 390 | void *arg, size_t argsize) |
Miklos Szeredi | 85c74fc | 2001-10-28 19:44:14 +0000 | [diff] [blame] | 391 | { |
Miklos Szeredi | 40b9a5a | 2002-12-10 16:09:02 +0000 | [diff] [blame] | 392 | int res; |
Miklos Szeredi | 85c74fc | 2001-10-28 19:44:14 +0000 | [diff] [blame] | 393 | char *outbuf; |
| 394 | size_t outsize; |
| 395 | struct fuse_out_header *out; |
| 396 | |
Miklos Szeredi | 7eafcce | 2004-06-19 22:42:38 +0000 | [diff] [blame] | 397 | if (error <= -1000 || error > 0) { |
Miklos Szeredi | 0f48a26 | 2002-12-05 14:23:01 +0000 | [diff] [blame] | 398 | fprintf(stderr, "fuse: bad error value: %i\n", error); |
Miklos Szeredi | 19dff1b | 2001-10-30 15:06:52 +0000 | [diff] [blame] | 399 | error = -ERANGE; |
Miklos Szeredi | 85c74fc | 2001-10-28 19:44:14 +0000 | [diff] [blame] | 400 | } |
| 401 | |
Miklos Szeredi | 7eafcce | 2004-06-19 22:42:38 +0000 | [diff] [blame] | 402 | if (error) |
Miklos Szeredi | 85c74fc | 2001-10-28 19:44:14 +0000 | [diff] [blame] | 403 | argsize = 0; |
| 404 | |
| 405 | outsize = sizeof(struct fuse_out_header) + argsize; |
Miklos Szeredi | 97c61e9 | 2001-11-07 12:09:43 +0000 | [diff] [blame] | 406 | outbuf = (char *) malloc(outsize); |
Miklos Szeredi | 85c74fc | 2001-10-28 19:44:14 +0000 | [diff] [blame] | 407 | out = (struct fuse_out_header *) outbuf; |
Miklos Szeredi | 0f48a26 | 2002-12-05 14:23:01 +0000 | [diff] [blame] | 408 | memset(out, 0, sizeof(struct fuse_out_header)); |
Miklos Szeredi | 85c74fc | 2001-10-28 19:44:14 +0000 | [diff] [blame] | 409 | out->unique = in->unique; |
Miklos Szeredi | 19dff1b | 2001-10-30 15:06:52 +0000 | [diff] [blame] | 410 | out->error = error; |
Miklos Szeredi | 7eafcce | 2004-06-19 22:42:38 +0000 | [diff] [blame] | 411 | if (argsize != 0) |
Miklos Szeredi | 85c74fc | 2001-10-28 19:44:14 +0000 | [diff] [blame] | 412 | memcpy(outbuf + sizeof(struct fuse_out_header), arg, argsize); |
| 413 | |
Miklos Szeredi | 40b9a5a | 2002-12-10 16:09:02 +0000 | [diff] [blame] | 414 | res = send_reply_raw(f, outbuf, outsize); |
Miklos Szeredi | 97c61e9 | 2001-11-07 12:09:43 +0000 | [diff] [blame] | 415 | free(outbuf); |
Miklos Szeredi | 40b9a5a | 2002-12-10 16:09:02 +0000 | [diff] [blame] | 416 | |
| 417 | return res; |
Miklos Szeredi | 85c74fc | 2001-10-28 19:44:14 +0000 | [diff] [blame] | 418 | } |
| 419 | |
Miklos Szeredi | 76f6578 | 2004-02-19 16:55:40 +0000 | [diff] [blame] | 420 | 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] | 421 | const char *path, struct fuse_entry_out *arg) |
Miklos Szeredi | 76f6578 | 2004-02-19 16:55:40 +0000 | [diff] [blame] | 422 | { |
| 423 | int res; |
| 424 | struct stat buf; |
| 425 | |
| 426 | res = f->op.getattr(path, &buf); |
Miklos Szeredi | 7eafcce | 2004-06-19 22:42:38 +0000 | [diff] [blame] | 427 | if (res == 0) { |
Miklos Szeredi | 76f6578 | 2004-02-19 16:55:40 +0000 | [diff] [blame] | 428 | struct node *node; |
| 429 | |
Miklos Szeredi | 254d5ed | 2004-03-02 11:11:24 +0000 | [diff] [blame] | 430 | memset(arg, 0, sizeof(struct fuse_entry_out)); |
Miklos Szeredi | 76f6578 | 2004-02-19 16:55:40 +0000 | [diff] [blame] | 431 | convert_stat(&buf, &arg->attr); |
| 432 | node = find_node(f, ino, name, &arg->attr, version); |
| 433 | arg->ino = node->ino; |
| 434 | arg->generation = node->generation; |
Miklos Szeredi | 254d5ed | 2004-03-02 11:11:24 +0000 | [diff] [blame] | 435 | arg->entry_valid = ENTRY_REVALIDATE_TIME; |
| 436 | arg->entry_valid_nsec = 0; |
| 437 | arg->attr_valid = ATTR_REVALIDATE_TIME; |
| 438 | arg->attr_valid_nsec = 0; |
Miklos Szeredi | 7eafcce | 2004-06-19 22:42:38 +0000 | [diff] [blame] | 439 | if (f->flags & FUSE_DEBUG) { |
Miklos Szeredi | 76f6578 | 2004-02-19 16:55:40 +0000 | [diff] [blame] | 440 | printf(" INO: %li\n", arg->ino); |
| 441 | fflush(stdout); |
| 442 | } |
| 443 | } |
| 444 | return res; |
| 445 | } |
| 446 | |
Miklos Szeredi | 85c74fc | 2001-10-28 19:44:14 +0000 | [diff] [blame] | 447 | static void do_lookup(struct fuse *f, struct fuse_in_header *in, char *name) |
| 448 | { |
| 449 | int res; |
Miklos Szeredi | 2778f6c | 2004-06-21 09:45:30 +0000 | [diff] [blame] | 450 | int res2; |
Miklos Szeredi | 19dff1b | 2001-10-30 15:06:52 +0000 | [diff] [blame] | 451 | char *path; |
Miklos Szeredi | 254d5ed | 2004-03-02 11:11:24 +0000 | [diff] [blame] | 452 | struct fuse_entry_out arg; |
Miklos Szeredi | 85c74fc | 2001-10-28 19:44:14 +0000 | [diff] [blame] | 453 | |
Miklos Szeredi | 5e18348 | 2001-10-31 14:52:35 +0000 | [diff] [blame] | 454 | res = -ENOENT; |
Miklos Szeredi | a181e61 | 2001-11-06 12:03:23 +0000 | [diff] [blame] | 455 | path = get_path_name(f, in->ino, name); |
Miklos Szeredi | 7eafcce | 2004-06-19 22:42:38 +0000 | [diff] [blame] | 456 | if (path != NULL) { |
| 457 | if (f->flags & FUSE_DEBUG) { |
Miklos Szeredi | 6ebe234 | 2002-01-06 21:44:16 +0000 | [diff] [blame] | 458 | printf("LOOKUP %s\n", path); |
| 459 | fflush(stdout); |
| 460 | } |
Miklos Szeredi | 5e18348 | 2001-10-31 14:52:35 +0000 | [diff] [blame] | 461 | res = -ENOSYS; |
Miklos Szeredi | 7eafcce | 2004-06-19 22:42:38 +0000 | [diff] [blame] | 462 | if (f->op.getattr) |
Miklos Szeredi | 76f6578 | 2004-02-19 16:55:40 +0000 | [diff] [blame] | 463 | res = lookup_path(f, in->ino, in->unique, name, path, &arg); |
Miklos Szeredi | 97c61e9 | 2001-11-07 12:09:43 +0000 | [diff] [blame] | 464 | free(path); |
Miklos Szeredi | 5e18348 | 2001-10-31 14:52:35 +0000 | [diff] [blame] | 465 | } |
Miklos Szeredi | 2778f6c | 2004-06-21 09:45:30 +0000 | [diff] [blame] | 466 | res2 = send_reply(f, in, res, &arg, sizeof(arg)); |
| 467 | if (res == 0 && res2 == -ENOENT) |
| 468 | destroy_node(f, arg.ino, in->unique); |
Miklos Szeredi | 85c74fc | 2001-10-28 19:44:14 +0000 | [diff] [blame] | 469 | } |
| 470 | |
Miklos Szeredi | a181e61 | 2001-11-06 12:03:23 +0000 | [diff] [blame] | 471 | static void do_forget(struct fuse *f, struct fuse_in_header *in, |
| 472 | struct fuse_forget_in *arg) |
Miklos Szeredi | 85c74fc | 2001-10-28 19:44:14 +0000 | [diff] [blame] | 473 | { |
Miklos Szeredi | 7eafcce | 2004-06-19 22:42:38 +0000 | [diff] [blame] | 474 | if (f->flags & FUSE_DEBUG) { |
Miklos Szeredi | 4369643 | 2001-11-18 19:15:05 +0000 | [diff] [blame] | 475 | printf("FORGET %li/%i\n", in->ino, arg->version); |
| 476 | fflush(stdout); |
| 477 | } |
Miklos Szeredi | a181e61 | 2001-11-06 12:03:23 +0000 | [diff] [blame] | 478 | destroy_node(f, in->ino, arg->version); |
Miklos Szeredi | 85c74fc | 2001-10-28 19:44:14 +0000 | [diff] [blame] | 479 | } |
| 480 | |
| 481 | static void do_getattr(struct fuse *f, struct fuse_in_header *in) |
| 482 | { |
| 483 | int res; |
Miklos Szeredi | 19dff1b | 2001-10-30 15:06:52 +0000 | [diff] [blame] | 484 | char *path; |
| 485 | struct stat buf; |
Miklos Szeredi | 254d5ed | 2004-03-02 11:11:24 +0000 | [diff] [blame] | 486 | struct fuse_attr_out arg; |
Miklos Szeredi | 85c74fc | 2001-10-28 19:44:14 +0000 | [diff] [blame] | 487 | |
Miklos Szeredi | 5e18348 | 2001-10-31 14:52:35 +0000 | [diff] [blame] | 488 | res = -ENOENT; |
Miklos Szeredi | a181e61 | 2001-11-06 12:03:23 +0000 | [diff] [blame] | 489 | path = get_path(f, in->ino); |
Miklos Szeredi | 7eafcce | 2004-06-19 22:42:38 +0000 | [diff] [blame] | 490 | if (path != NULL) { |
Miklos Szeredi | 5e18348 | 2001-10-31 14:52:35 +0000 | [diff] [blame] | 491 | res = -ENOSYS; |
Miklos Szeredi | 7eafcce | 2004-06-19 22:42:38 +0000 | [diff] [blame] | 492 | if (f->op.getattr) |
Miklos Szeredi | 0a7077f | 2001-11-11 18:20:17 +0000 | [diff] [blame] | 493 | res = f->op.getattr(path, &buf); |
Miklos Szeredi | 97c61e9 | 2001-11-07 12:09:43 +0000 | [diff] [blame] | 494 | free(path); |
Miklos Szeredi | 5e18348 | 2001-10-31 14:52:35 +0000 | [diff] [blame] | 495 | } |
Miklos Szeredi | 0f48a26 | 2002-12-05 14:23:01 +0000 | [diff] [blame] | 496 | |
Miklos Szeredi | 7eafcce | 2004-06-19 22:42:38 +0000 | [diff] [blame] | 497 | if (res == 0) { |
Miklos Szeredi | 254d5ed | 2004-03-02 11:11:24 +0000 | [diff] [blame] | 498 | memset(&arg, 0, sizeof(struct fuse_attr_out)); |
| 499 | arg.attr_valid = ATTR_REVALIDATE_TIME; |
| 500 | arg.attr_valid_nsec = 0; |
Miklos Szeredi | 19dff1b | 2001-10-30 15:06:52 +0000 | [diff] [blame] | 501 | convert_stat(&buf, &arg.attr); |
Miklos Szeredi | 0f48a26 | 2002-12-05 14:23:01 +0000 | [diff] [blame] | 502 | } |
Miklos Szeredi | 19dff1b | 2001-10-30 15:06:52 +0000 | [diff] [blame] | 503 | |
Miklos Szeredi | 85c74fc | 2001-10-28 19:44:14 +0000 | [diff] [blame] | 504 | send_reply(f, in, res, &arg, sizeof(arg)); |
| 505 | } |
| 506 | |
Miklos Szeredi | 680a69a | 2001-11-16 13:31:14 +0000 | [diff] [blame] | 507 | 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] | 508 | { |
| 509 | int res; |
| 510 | |
| 511 | res = -ENOSYS; |
Miklos Szeredi | 7eafcce | 2004-06-19 22:42:38 +0000 | [diff] [blame] | 512 | if (f->op.chmod) |
Miklos Szeredi | 0a7077f | 2001-11-11 18:20:17 +0000 | [diff] [blame] | 513 | res = f->op.chmod(path, attr->mode); |
Miklos Szeredi | f3ea83b | 2001-11-07 14:55:16 +0000 | [diff] [blame] | 514 | |
| 515 | return res; |
| 516 | } |
| 517 | |
Miklos Szeredi | 680a69a | 2001-11-16 13:31:14 +0000 | [diff] [blame] | 518 | 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] | 519 | int valid) |
Miklos Szeredi | f3ea83b | 2001-11-07 14:55:16 +0000 | [diff] [blame] | 520 | { |
| 521 | int res; |
| 522 | uid_t uid = (valid & FATTR_UID) ? attr->uid : (uid_t) -1; |
| 523 | gid_t gid = (valid & FATTR_GID) ? attr->gid : (gid_t) -1; |
| 524 | |
| 525 | res = -ENOSYS; |
Miklos Szeredi | 7eafcce | 2004-06-19 22:42:38 +0000 | [diff] [blame] | 526 | if (f->op.chown) |
Miklos Szeredi | 0a7077f | 2001-11-11 18:20:17 +0000 | [diff] [blame] | 527 | res = f->op.chown(path, uid, gid); |
Miklos Szeredi | f3ea83b | 2001-11-07 14:55:16 +0000 | [diff] [blame] | 528 | |
| 529 | return res; |
| 530 | } |
| 531 | |
Miklos Szeredi | 680a69a | 2001-11-16 13:31:14 +0000 | [diff] [blame] | 532 | static int do_truncate(struct fuse *f, const char *path, |
| 533 | struct fuse_attr *attr) |
Miklos Szeredi | f3ea83b | 2001-11-07 14:55:16 +0000 | [diff] [blame] | 534 | { |
| 535 | int res; |
| 536 | |
| 537 | res = -ENOSYS; |
Miklos Szeredi | 7eafcce | 2004-06-19 22:42:38 +0000 | [diff] [blame] | 538 | if (f->op.truncate) |
Miklos Szeredi | 0a7077f | 2001-11-11 18:20:17 +0000 | [diff] [blame] | 539 | res = f->op.truncate(path, attr->size); |
Miklos Szeredi | f3ea83b | 2001-11-07 14:55:16 +0000 | [diff] [blame] | 540 | |
| 541 | return res; |
| 542 | } |
| 543 | |
Miklos Szeredi | 680a69a | 2001-11-16 13:31:14 +0000 | [diff] [blame] | 544 | 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] | 545 | { |
| 546 | int res; |
| 547 | struct utimbuf buf; |
| 548 | buf.actime = attr->atime; |
| 549 | buf.modtime = attr->mtime; |
| 550 | res = -ENOSYS; |
Miklos Szeredi | 7eafcce | 2004-06-19 22:42:38 +0000 | [diff] [blame] | 551 | if (f->op.utime) |
Miklos Szeredi | 0a7077f | 2001-11-11 18:20:17 +0000 | [diff] [blame] | 552 | res = f->op.utime(path, &buf); |
Miklos Szeredi | f3ea83b | 2001-11-07 14:55:16 +0000 | [diff] [blame] | 553 | |
| 554 | return res; |
| 555 | } |
| 556 | |
Miklos Szeredi | 5e18348 | 2001-10-31 14:52:35 +0000 | [diff] [blame] | 557 | static void do_setattr(struct fuse *f, struct fuse_in_header *in, |
| 558 | struct fuse_setattr_in *arg) |
| 559 | { |
| 560 | int res; |
| 561 | char *path; |
| 562 | int valid = arg->valid; |
| 563 | struct fuse_attr *attr = &arg->attr; |
Miklos Szeredi | 254d5ed | 2004-03-02 11:11:24 +0000 | [diff] [blame] | 564 | struct fuse_attr_out outarg; |
Miklos Szeredi | 5e18348 | 2001-10-31 14:52:35 +0000 | [diff] [blame] | 565 | |
| 566 | res = -ENOENT; |
Miklos Szeredi | a181e61 | 2001-11-06 12:03:23 +0000 | [diff] [blame] | 567 | path = get_path(f, in->ino); |
Miklos Szeredi | 7eafcce | 2004-06-19 22:42:38 +0000 | [diff] [blame] | 568 | if (path != NULL) { |
Miklos Szeredi | f3ea83b | 2001-11-07 14:55:16 +0000 | [diff] [blame] | 569 | res = -ENOSYS; |
Miklos Szeredi | 7eafcce | 2004-06-19 22:42:38 +0000 | [diff] [blame] | 570 | if (f->op.getattr) { |
Miklos Szeredi | f3ea83b | 2001-11-07 14:55:16 +0000 | [diff] [blame] | 571 | res = 0; |
Miklos Szeredi | 7eafcce | 2004-06-19 22:42:38 +0000 | [diff] [blame] | 572 | if (!res && (valid & FATTR_MODE)) |
Miklos Szeredi | 0a7077f | 2001-11-11 18:20:17 +0000 | [diff] [blame] | 573 | res = do_chmod(f, path, attr); |
Miklos Szeredi | 7eafcce | 2004-06-19 22:42:38 +0000 | [diff] [blame] | 574 | if (!res && (valid & (FATTR_UID | FATTR_GID))) |
Miklos Szeredi | 0a7077f | 2001-11-11 18:20:17 +0000 | [diff] [blame] | 575 | res = do_chown(f, path, attr, valid); |
Miklos Szeredi | 7eafcce | 2004-06-19 22:42:38 +0000 | [diff] [blame] | 576 | if (!res && (valid & FATTR_SIZE)) |
Miklos Szeredi | 0a7077f | 2001-11-11 18:20:17 +0000 | [diff] [blame] | 577 | res = do_truncate(f, path, attr); |
Miklos Szeredi | 7eafcce | 2004-06-19 22:42:38 +0000 | [diff] [blame] | 578 | if (!res && (valid & (FATTR_ATIME | FATTR_MTIME)) == |
Miklos Szeredi | b595861 | 2004-02-20 14:10:49 +0000 | [diff] [blame] | 579 | (FATTR_ATIME | FATTR_MTIME)) |
Miklos Szeredi | 0a7077f | 2001-11-11 18:20:17 +0000 | [diff] [blame] | 580 | res = do_utime(f, path, attr); |
Miklos Szeredi | 7eafcce | 2004-06-19 22:42:38 +0000 | [diff] [blame] | 581 | if (!res) { |
Miklos Szeredi | f3ea83b | 2001-11-07 14:55:16 +0000 | [diff] [blame] | 582 | struct stat buf; |
Miklos Szeredi | 0a7077f | 2001-11-11 18:20:17 +0000 | [diff] [blame] | 583 | res = f->op.getattr(path, &buf); |
Miklos Szeredi | 7eafcce | 2004-06-19 22:42:38 +0000 | [diff] [blame] | 584 | if (!res) { |
Miklos Szeredi | 254d5ed | 2004-03-02 11:11:24 +0000 | [diff] [blame] | 585 | memset(&outarg, 0, sizeof(struct fuse_attr_out)); |
| 586 | outarg.attr_valid = ATTR_REVALIDATE_TIME; |
| 587 | outarg.attr_valid_nsec = 0; |
Miklos Szeredi | f3ea83b | 2001-11-07 14:55:16 +0000 | [diff] [blame] | 588 | convert_stat(&buf, &outarg.attr); |
Miklos Szeredi | 0f48a26 | 2002-12-05 14:23:01 +0000 | [diff] [blame] | 589 | } |
Miklos Szeredi | a181e61 | 2001-11-06 12:03:23 +0000 | [diff] [blame] | 590 | } |
Miklos Szeredi | 5e18348 | 2001-10-31 14:52:35 +0000 | [diff] [blame] | 591 | } |
Miklos Szeredi | 97c61e9 | 2001-11-07 12:09:43 +0000 | [diff] [blame] | 592 | free(path); |
Miklos Szeredi | 5e18348 | 2001-10-31 14:52:35 +0000 | [diff] [blame] | 593 | } |
Miklos Szeredi | a181e61 | 2001-11-06 12:03:23 +0000 | [diff] [blame] | 594 | send_reply(f, in, res, &outarg, sizeof(outarg)); |
Miklos Szeredi | 5e18348 | 2001-10-31 14:52:35 +0000 | [diff] [blame] | 595 | } |
| 596 | |
Miklos Szeredi | 85c74fc | 2001-10-28 19:44:14 +0000 | [diff] [blame] | 597 | static void do_readlink(struct fuse *f, struct fuse_in_header *in) |
| 598 | { |
| 599 | int res; |
| 600 | char link[PATH_MAX + 1]; |
Miklos Szeredi | b483c93 | 2001-10-29 14:57:57 +0000 | [diff] [blame] | 601 | char *path; |
Miklos Szeredi | 85c74fc | 2001-10-28 19:44:14 +0000 | [diff] [blame] | 602 | |
Miklos Szeredi | 5e18348 | 2001-10-31 14:52:35 +0000 | [diff] [blame] | 603 | res = -ENOENT; |
Miklos Szeredi | a181e61 | 2001-11-06 12:03:23 +0000 | [diff] [blame] | 604 | path = get_path(f, in->ino); |
Miklos Szeredi | 7eafcce | 2004-06-19 22:42:38 +0000 | [diff] [blame] | 605 | if (path != NULL) { |
Miklos Szeredi | 5e18348 | 2001-10-31 14:52:35 +0000 | [diff] [blame] | 606 | res = -ENOSYS; |
Miklos Szeredi | 7eafcce | 2004-06-19 22:42:38 +0000 | [diff] [blame] | 607 | if (f->op.readlink) |
Miklos Szeredi | 0a7077f | 2001-11-11 18:20:17 +0000 | [diff] [blame] | 608 | res = f->op.readlink(path, link, sizeof(link)); |
Miklos Szeredi | 97c61e9 | 2001-11-07 12:09:43 +0000 | [diff] [blame] | 609 | free(path); |
Miklos Szeredi | 5e18348 | 2001-10-31 14:52:35 +0000 | [diff] [blame] | 610 | } |
Miklos Szeredi | 2df1c04 | 2001-11-06 15:07:17 +0000 | [diff] [blame] | 611 | link[PATH_MAX] = '\0'; |
Miklos Szeredi | 4b2bef4 | 2002-01-09 12:23:27 +0000 | [diff] [blame] | 612 | send_reply(f, in, res, link, res == 0 ? strlen(link) : 0); |
Miklos Szeredi | 85c74fc | 2001-10-28 19:44:14 +0000 | [diff] [blame] | 613 | } |
| 614 | |
| 615 | static void do_getdir(struct fuse *f, struct fuse_in_header *in) |
| 616 | { |
| 617 | int res; |
| 618 | struct fuse_getdir_out arg; |
Miklos Szeredi | a181e61 | 2001-11-06 12:03:23 +0000 | [diff] [blame] | 619 | struct fuse_dirhandle dh; |
Miklos Szeredi | b483c93 | 2001-10-29 14:57:57 +0000 | [diff] [blame] | 620 | char *path; |
Miklos Szeredi | 85c74fc | 2001-10-28 19:44:14 +0000 | [diff] [blame] | 621 | |
Miklos Szeredi | b483c93 | 2001-10-29 14:57:57 +0000 | [diff] [blame] | 622 | dh.fuse = f; |
| 623 | dh.fp = tmpfile(); |
| 624 | dh.dir = in->ino; |
Miklos Szeredi | 5e18348 | 2001-10-31 14:52:35 +0000 | [diff] [blame] | 625 | res = -ENOENT; |
Miklos Szeredi | a181e61 | 2001-11-06 12:03:23 +0000 | [diff] [blame] | 626 | path = get_path(f, in->ino); |
Miklos Szeredi | 7eafcce | 2004-06-19 22:42:38 +0000 | [diff] [blame] | 627 | if (path != NULL) { |
Miklos Szeredi | 5e18348 | 2001-10-31 14:52:35 +0000 | [diff] [blame] | 628 | res = -ENOSYS; |
Miklos Szeredi | 7eafcce | 2004-06-19 22:42:38 +0000 | [diff] [blame] | 629 | if (f->op.getdir) |
Miklos Szeredi | 0a7077f | 2001-11-11 18:20:17 +0000 | [diff] [blame] | 630 | res = f->op.getdir(path, &dh, (fuse_dirfil_t) fill_dir); |
Miklos Szeredi | 97c61e9 | 2001-11-07 12:09:43 +0000 | [diff] [blame] | 631 | free(path); |
Miklos Szeredi | 5e18348 | 2001-10-31 14:52:35 +0000 | [diff] [blame] | 632 | } |
Miklos Szeredi | b483c93 | 2001-10-29 14:57:57 +0000 | [diff] [blame] | 633 | fflush(dh.fp); |
Miklos Szeredi | 0f48a26 | 2002-12-05 14:23:01 +0000 | [diff] [blame] | 634 | |
| 635 | memset(&arg, 0, sizeof(struct fuse_getdir_out)); |
Miklos Szeredi | b483c93 | 2001-10-29 14:57:57 +0000 | [diff] [blame] | 636 | arg.fd = fileno(dh.fp); |
Miklos Szeredi | 85c74fc | 2001-10-28 19:44:14 +0000 | [diff] [blame] | 637 | send_reply(f, in, res, &arg, sizeof(arg)); |
Miklos Szeredi | b483c93 | 2001-10-29 14:57:57 +0000 | [diff] [blame] | 638 | fclose(dh.fp); |
Miklos Szeredi | 85c74fc | 2001-10-28 19:44:14 +0000 | [diff] [blame] | 639 | } |
| 640 | |
Miklos Szeredi | b483c93 | 2001-10-29 14:57:57 +0000 | [diff] [blame] | 641 | static void do_mknod(struct fuse *f, struct fuse_in_header *in, |
| 642 | struct fuse_mknod_in *inarg) |
| 643 | { |
| 644 | int res; |
Miklos Szeredi | 2778f6c | 2004-06-21 09:45:30 +0000 | [diff] [blame] | 645 | int res2; |
Miklos Szeredi | b483c93 | 2001-10-29 14:57:57 +0000 | [diff] [blame] | 646 | char *path; |
Miklos Szeredi | 76f6578 | 2004-02-19 16:55:40 +0000 | [diff] [blame] | 647 | char *name = PARAM(inarg); |
Miklos Szeredi | 254d5ed | 2004-03-02 11:11:24 +0000 | [diff] [blame] | 648 | struct fuse_entry_out outarg; |
Miklos Szeredi | b483c93 | 2001-10-29 14:57:57 +0000 | [diff] [blame] | 649 | |
Miklos Szeredi | 5e18348 | 2001-10-31 14:52:35 +0000 | [diff] [blame] | 650 | res = -ENOENT; |
Miklos Szeredi | 76f6578 | 2004-02-19 16:55:40 +0000 | [diff] [blame] | 651 | path = get_path_name(f, in->ino, name); |
Miklos Szeredi | 7eafcce | 2004-06-19 22:42:38 +0000 | [diff] [blame] | 652 | if (path != NULL) { |
| 653 | if (f->flags & FUSE_DEBUG) { |
Miklos Szeredi | 76f6578 | 2004-02-19 16:55:40 +0000 | [diff] [blame] | 654 | printf("MKNOD %s\n", path); |
| 655 | fflush(stdout); |
| 656 | } |
Miklos Szeredi | 5e18348 | 2001-10-31 14:52:35 +0000 | [diff] [blame] | 657 | res = -ENOSYS; |
Miklos Szeredi | 7eafcce | 2004-06-19 22:42:38 +0000 | [diff] [blame] | 658 | if (f->op.mknod && f->op.getattr) { |
Miklos Szeredi | 0a7077f | 2001-11-11 18:20:17 +0000 | [diff] [blame] | 659 | res = f->op.mknod(path, inarg->mode, inarg->rdev); |
Miklos Szeredi | 7eafcce | 2004-06-19 22:42:38 +0000 | [diff] [blame] | 660 | if (res == 0) |
Miklos Szeredi | 76f6578 | 2004-02-19 16:55:40 +0000 | [diff] [blame] | 661 | res = lookup_path(f, in->ino, in->unique, name, path, &outarg); |
Miklos Szeredi | 5e18348 | 2001-10-31 14:52:35 +0000 | [diff] [blame] | 662 | } |
Miklos Szeredi | 97c61e9 | 2001-11-07 12:09:43 +0000 | [diff] [blame] | 663 | free(path); |
Miklos Szeredi | b483c93 | 2001-10-29 14:57:57 +0000 | [diff] [blame] | 664 | } |
Miklos Szeredi | 2778f6c | 2004-06-21 09:45:30 +0000 | [diff] [blame] | 665 | res2 = send_reply(f, in, res, &outarg, sizeof(outarg)); |
| 666 | if (res == 0 && res2 == -ENOENT) |
| 667 | destroy_node(f, outarg.ino, in->unique); |
Miklos Szeredi | b483c93 | 2001-10-29 14:57:57 +0000 | [diff] [blame] | 668 | } |
| 669 | |
| 670 | static void do_mkdir(struct fuse *f, struct fuse_in_header *in, |
| 671 | struct fuse_mkdir_in *inarg) |
| 672 | { |
| 673 | int res; |
Miklos Szeredi | 2778f6c | 2004-06-21 09:45:30 +0000 | [diff] [blame] | 674 | int res2; |
Miklos Szeredi | b483c93 | 2001-10-29 14:57:57 +0000 | [diff] [blame] | 675 | char *path; |
Miklos Szeredi | 76f6578 | 2004-02-19 16:55:40 +0000 | [diff] [blame] | 676 | char *name = PARAM(inarg); |
Miklos Szeredi | 254d5ed | 2004-03-02 11:11:24 +0000 | [diff] [blame] | 677 | struct fuse_entry_out outarg; |
Miklos Szeredi | b483c93 | 2001-10-29 14:57:57 +0000 | [diff] [blame] | 678 | |
Miklos Szeredi | 5e18348 | 2001-10-31 14:52:35 +0000 | [diff] [blame] | 679 | res = -ENOENT; |
Miklos Szeredi | 76f6578 | 2004-02-19 16:55:40 +0000 | [diff] [blame] | 680 | path = get_path_name(f, in->ino, name); |
Miklos Szeredi | 7eafcce | 2004-06-19 22:42:38 +0000 | [diff] [blame] | 681 | if (path != NULL) { |
| 682 | if (f->flags & FUSE_DEBUG) { |
Miklos Szeredi | 76f6578 | 2004-02-19 16:55:40 +0000 | [diff] [blame] | 683 | printf("MKDIR %s\n", path); |
| 684 | fflush(stdout); |
| 685 | } |
Miklos Szeredi | 5e18348 | 2001-10-31 14:52:35 +0000 | [diff] [blame] | 686 | res = -ENOSYS; |
Miklos Szeredi | 7eafcce | 2004-06-19 22:42:38 +0000 | [diff] [blame] | 687 | if (f->op.mkdir && f->op.getattr) { |
Miklos Szeredi | 0a7077f | 2001-11-11 18:20:17 +0000 | [diff] [blame] | 688 | res = f->op.mkdir(path, inarg->mode); |
Miklos Szeredi | 7eafcce | 2004-06-19 22:42:38 +0000 | [diff] [blame] | 689 | if (res == 0) |
Miklos Szeredi | 76f6578 | 2004-02-19 16:55:40 +0000 | [diff] [blame] | 690 | res = lookup_path(f, in->ino, in->unique, name, path, &outarg); |
| 691 | } |
Miklos Szeredi | 97c61e9 | 2001-11-07 12:09:43 +0000 | [diff] [blame] | 692 | free(path); |
Miklos Szeredi | 5e18348 | 2001-10-31 14:52:35 +0000 | [diff] [blame] | 693 | } |
Miklos Szeredi | 2778f6c | 2004-06-21 09:45:30 +0000 | [diff] [blame] | 694 | res2 = send_reply(f, in, res, &outarg, sizeof(outarg)); |
| 695 | if (res == 0 && res2 == -ENOENT) |
| 696 | destroy_node(f, outarg.ino, in->unique); |
Miklos Szeredi | b483c93 | 2001-10-29 14:57:57 +0000 | [diff] [blame] | 697 | } |
| 698 | |
Miklos Szeredi | b595861 | 2004-02-20 14:10:49 +0000 | [diff] [blame] | 699 | 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] | 700 | { |
| 701 | int res; |
| 702 | char *path; |
| 703 | |
Miklos Szeredi | 5e18348 | 2001-10-31 14:52:35 +0000 | [diff] [blame] | 704 | res = -ENOENT; |
Miklos Szeredi | a181e61 | 2001-11-06 12:03:23 +0000 | [diff] [blame] | 705 | path = get_path_name(f, in->ino, name); |
Miklos Szeredi | 7eafcce | 2004-06-19 22:42:38 +0000 | [diff] [blame] | 706 | if (path != NULL) { |
Miklos Szeredi | 5e18348 | 2001-10-31 14:52:35 +0000 | [diff] [blame] | 707 | res = -ENOSYS; |
Miklos Szeredi | 7eafcce | 2004-06-19 22:42:38 +0000 | [diff] [blame] | 708 | if (f->op.unlink) { |
Miklos Szeredi | b595861 | 2004-02-20 14:10:49 +0000 | [diff] [blame] | 709 | res = f->op.unlink(path); |
Miklos Szeredi | 7eafcce | 2004-06-19 22:42:38 +0000 | [diff] [blame] | 710 | if (res == 0) |
Miklos Szeredi | b595861 | 2004-02-20 14:10:49 +0000 | [diff] [blame] | 711 | remove_node(f, in->ino, name); |
Miklos Szeredi | 5e18348 | 2001-10-31 14:52:35 +0000 | [diff] [blame] | 712 | } |
Miklos Szeredi | 97c61e9 | 2001-11-07 12:09:43 +0000 | [diff] [blame] | 713 | free(path); |
Miklos Szeredi | b483c93 | 2001-10-29 14:57:57 +0000 | [diff] [blame] | 714 | } |
Miklos Szeredi | b595861 | 2004-02-20 14:10:49 +0000 | [diff] [blame] | 715 | send_reply(f, in, res, NULL, 0); |
| 716 | } |
| 717 | |
| 718 | static void do_rmdir(struct fuse *f, struct fuse_in_header *in, char *name) |
| 719 | { |
| 720 | int res; |
| 721 | char *path; |
| 722 | |
| 723 | res = -ENOENT; |
| 724 | path = get_path_name(f, in->ino, name); |
Miklos Szeredi | 7eafcce | 2004-06-19 22:42:38 +0000 | [diff] [blame] | 725 | if (path != NULL) { |
Miklos Szeredi | b595861 | 2004-02-20 14:10:49 +0000 | [diff] [blame] | 726 | res = -ENOSYS; |
Miklos Szeredi | 7eafcce | 2004-06-19 22:42:38 +0000 | [diff] [blame] | 727 | if (f->op.rmdir) { |
Miklos Szeredi | b595861 | 2004-02-20 14:10:49 +0000 | [diff] [blame] | 728 | res = f->op.rmdir(path); |
Miklos Szeredi | 7eafcce | 2004-06-19 22:42:38 +0000 | [diff] [blame] | 729 | if (res == 0) |
Miklos Szeredi | b595861 | 2004-02-20 14:10:49 +0000 | [diff] [blame] | 730 | remove_node(f, in->ino, name); |
| 731 | } |
| 732 | free(path); |
| 733 | } |
Miklos Szeredi | b483c93 | 2001-10-29 14:57:57 +0000 | [diff] [blame] | 734 | send_reply(f, in, res, NULL, 0); |
| 735 | } |
| 736 | |
| 737 | static void do_symlink(struct fuse *f, struct fuse_in_header *in, char *name, |
| 738 | char *link) |
| 739 | { |
| 740 | int res; |
Miklos Szeredi | 2778f6c | 2004-06-21 09:45:30 +0000 | [diff] [blame] | 741 | int res2; |
Miklos Szeredi | b483c93 | 2001-10-29 14:57:57 +0000 | [diff] [blame] | 742 | char *path; |
Miklos Szeredi | 254d5ed | 2004-03-02 11:11:24 +0000 | [diff] [blame] | 743 | struct fuse_entry_out outarg; |
Miklos Szeredi | b483c93 | 2001-10-29 14:57:57 +0000 | [diff] [blame] | 744 | |
Miklos Szeredi | 5e18348 | 2001-10-31 14:52:35 +0000 | [diff] [blame] | 745 | res = -ENOENT; |
Miklos Szeredi | a181e61 | 2001-11-06 12:03:23 +0000 | [diff] [blame] | 746 | path = get_path_name(f, in->ino, name); |
Miklos Szeredi | 7eafcce | 2004-06-19 22:42:38 +0000 | [diff] [blame] | 747 | if (path != NULL) { |
| 748 | if (f->flags & FUSE_DEBUG) { |
Miklos Szeredi | 76f6578 | 2004-02-19 16:55:40 +0000 | [diff] [blame] | 749 | printf("SYMLINK %s\n", path); |
| 750 | fflush(stdout); |
| 751 | } |
Miklos Szeredi | 5e18348 | 2001-10-31 14:52:35 +0000 | [diff] [blame] | 752 | res = -ENOSYS; |
Miklos Szeredi | 7eafcce | 2004-06-19 22:42:38 +0000 | [diff] [blame] | 753 | if (f->op.symlink && f->op.getattr) { |
Miklos Szeredi | 0a7077f | 2001-11-11 18:20:17 +0000 | [diff] [blame] | 754 | res = f->op.symlink(link, path); |
Miklos Szeredi | 7eafcce | 2004-06-19 22:42:38 +0000 | [diff] [blame] | 755 | if (res == 0) |
Miklos Szeredi | 76f6578 | 2004-02-19 16:55:40 +0000 | [diff] [blame] | 756 | res = lookup_path(f, in->ino, in->unique, name, path, &outarg); |
| 757 | } |
Miklos Szeredi | 97c61e9 | 2001-11-07 12:09:43 +0000 | [diff] [blame] | 758 | free(path); |
Miklos Szeredi | 5e18348 | 2001-10-31 14:52:35 +0000 | [diff] [blame] | 759 | } |
Miklos Szeredi | 2778f6c | 2004-06-21 09:45:30 +0000 | [diff] [blame] | 760 | res2 = send_reply(f, in, res, &outarg, sizeof(outarg)); |
| 761 | if (res == 0 && res2 == -ENOENT) |
| 762 | destroy_node(f, outarg.ino, in->unique); |
| 763 | |
Miklos Szeredi | b483c93 | 2001-10-29 14:57:57 +0000 | [diff] [blame] | 764 | } |
| 765 | |
Miklos Szeredi | 19dff1b | 2001-10-30 15:06:52 +0000 | [diff] [blame] | 766 | static void do_rename(struct fuse *f, struct fuse_in_header *in, |
| 767 | struct fuse_rename_in *inarg) |
| 768 | { |
| 769 | int res; |
| 770 | fino_t olddir = in->ino; |
| 771 | fino_t newdir = inarg->newdir; |
Miklos Szeredi | 6bf8b68 | 2002-10-28 08:49:39 +0000 | [diff] [blame] | 772 | char *oldname = PARAM(inarg); |
| 773 | char *newname = oldname + strlen(oldname) + 1; |
Miklos Szeredi | 5e18348 | 2001-10-31 14:52:35 +0000 | [diff] [blame] | 774 | char *oldpath; |
| 775 | char *newpath; |
Miklos Szeredi | 19dff1b | 2001-10-30 15:06:52 +0000 | [diff] [blame] | 776 | |
Miklos Szeredi | 5e18348 | 2001-10-31 14:52:35 +0000 | [diff] [blame] | 777 | res = -ENOENT; |
Miklos Szeredi | a181e61 | 2001-11-06 12:03:23 +0000 | [diff] [blame] | 778 | oldpath = get_path_name(f, olddir, oldname); |
Miklos Szeredi | 7eafcce | 2004-06-19 22:42:38 +0000 | [diff] [blame] | 779 | if (oldpath != NULL) { |
Miklos Szeredi | a181e61 | 2001-11-06 12:03:23 +0000 | [diff] [blame] | 780 | newpath = get_path_name(f, newdir, newname); |
Miklos Szeredi | 7eafcce | 2004-06-19 22:42:38 +0000 | [diff] [blame] | 781 | if (newpath != NULL) { |
Miklos Szeredi | 5e18348 | 2001-10-31 14:52:35 +0000 | [diff] [blame] | 782 | res = -ENOSYS; |
Miklos Szeredi | 7eafcce | 2004-06-19 22:42:38 +0000 | [diff] [blame] | 783 | if (f->op.rename) |
Miklos Szeredi | 0a7077f | 2001-11-11 18:20:17 +0000 | [diff] [blame] | 784 | res = f->op.rename(oldpath, newpath); |
Miklos Szeredi | 7eafcce | 2004-06-19 22:42:38 +0000 | [diff] [blame] | 785 | if (res == 0) |
Miklos Szeredi | 5e18348 | 2001-10-31 14:52:35 +0000 | [diff] [blame] | 786 | rename_node(f, olddir, oldname, newdir, newname); |
Miklos Szeredi | 97c61e9 | 2001-11-07 12:09:43 +0000 | [diff] [blame] | 787 | free(newpath); |
Miklos Szeredi | 5e18348 | 2001-10-31 14:52:35 +0000 | [diff] [blame] | 788 | } |
Miklos Szeredi | 97c61e9 | 2001-11-07 12:09:43 +0000 | [diff] [blame] | 789 | free(oldpath); |
Miklos Szeredi | 5e18348 | 2001-10-31 14:52:35 +0000 | [diff] [blame] | 790 | } |
Miklos Szeredi | 19dff1b | 2001-10-30 15:06:52 +0000 | [diff] [blame] | 791 | send_reply(f, in, res, NULL, 0); |
| 792 | } |
| 793 | |
| 794 | static void do_link(struct fuse *f, struct fuse_in_header *in, |
Miklos Szeredi | 5e18348 | 2001-10-31 14:52:35 +0000 | [diff] [blame] | 795 | struct fuse_link_in *arg) |
Miklos Szeredi | 19dff1b | 2001-10-30 15:06:52 +0000 | [diff] [blame] | 796 | { |
| 797 | int res; |
Miklos Szeredi | 2778f6c | 2004-06-21 09:45:30 +0000 | [diff] [blame] | 798 | int res2; |
Miklos Szeredi | 5e18348 | 2001-10-31 14:52:35 +0000 | [diff] [blame] | 799 | char *oldpath; |
| 800 | char *newpath; |
Miklos Szeredi | 76f6578 | 2004-02-19 16:55:40 +0000 | [diff] [blame] | 801 | char *name = PARAM(arg); |
Miklos Szeredi | 254d5ed | 2004-03-02 11:11:24 +0000 | [diff] [blame] | 802 | struct fuse_entry_out outarg; |
Miklos Szeredi | 19dff1b | 2001-10-30 15:06:52 +0000 | [diff] [blame] | 803 | |
Miklos Szeredi | 5e18348 | 2001-10-31 14:52:35 +0000 | [diff] [blame] | 804 | res = -ENOENT; |
Miklos Szeredi | a181e61 | 2001-11-06 12:03:23 +0000 | [diff] [blame] | 805 | oldpath = get_path(f, in->ino); |
Miklos Szeredi | 7eafcce | 2004-06-19 22:42:38 +0000 | [diff] [blame] | 806 | if (oldpath != NULL) { |
Miklos Szeredi | 76f6578 | 2004-02-19 16:55:40 +0000 | [diff] [blame] | 807 | newpath = get_path_name(f, arg->newdir, name); |
Miklos Szeredi | 7eafcce | 2004-06-19 22:42:38 +0000 | [diff] [blame] | 808 | if (newpath != NULL) { |
| 809 | if (f->flags & FUSE_DEBUG) { |
Miklos Szeredi | 76f6578 | 2004-02-19 16:55:40 +0000 | [diff] [blame] | 810 | printf("LINK %s\n", newpath); |
| 811 | fflush(stdout); |
| 812 | } |
Miklos Szeredi | 5e18348 | 2001-10-31 14:52:35 +0000 | [diff] [blame] | 813 | res = -ENOSYS; |
Miklos Szeredi | 7eafcce | 2004-06-19 22:42:38 +0000 | [diff] [blame] | 814 | if (f->op.link && f->op.getattr) { |
Miklos Szeredi | 0a7077f | 2001-11-11 18:20:17 +0000 | [diff] [blame] | 815 | res = f->op.link(oldpath, newpath); |
Miklos Szeredi | 7eafcce | 2004-06-19 22:42:38 +0000 | [diff] [blame] | 816 | if (res == 0) |
Miklos Szeredi | 76f6578 | 2004-02-19 16:55:40 +0000 | [diff] [blame] | 817 | res = lookup_path(f, arg->newdir, in->unique, name, |
| 818 | newpath, &outarg); |
| 819 | } |
Miklos Szeredi | 97c61e9 | 2001-11-07 12:09:43 +0000 | [diff] [blame] | 820 | free(newpath); |
Miklos Szeredi | 5e18348 | 2001-10-31 14:52:35 +0000 | [diff] [blame] | 821 | } |
Miklos Szeredi | 97c61e9 | 2001-11-07 12:09:43 +0000 | [diff] [blame] | 822 | free(oldpath); |
Miklos Szeredi | 5e18348 | 2001-10-31 14:52:35 +0000 | [diff] [blame] | 823 | } |
Miklos Szeredi | 2778f6c | 2004-06-21 09:45:30 +0000 | [diff] [blame] | 824 | res2 = send_reply(f, in, res, &outarg, sizeof(outarg)); |
| 825 | if (res == 0 && res2 == -ENOENT) |
| 826 | destroy_node(f, outarg.ino, in->unique); |
Miklos Szeredi | 19dff1b | 2001-10-30 15:06:52 +0000 | [diff] [blame] | 827 | } |
| 828 | |
Miklos Szeredi | 5e18348 | 2001-10-31 14:52:35 +0000 | [diff] [blame] | 829 | static void do_open(struct fuse *f, struct fuse_in_header *in, |
| 830 | struct fuse_open_in *arg) |
| 831 | { |
| 832 | int res; |
Miklos Szeredi | 40b9a5a | 2002-12-10 16:09:02 +0000 | [diff] [blame] | 833 | int res2; |
Miklos Szeredi | 5e18348 | 2001-10-31 14:52:35 +0000 | [diff] [blame] | 834 | char *path; |
| 835 | |
| 836 | res = -ENOENT; |
Miklos Szeredi | a181e61 | 2001-11-06 12:03:23 +0000 | [diff] [blame] | 837 | path = get_path(f, in->ino); |
Miklos Szeredi | 7eafcce | 2004-06-19 22:42:38 +0000 | [diff] [blame] | 838 | if (path != NULL) { |
Miklos Szeredi | 5e18348 | 2001-10-31 14:52:35 +0000 | [diff] [blame] | 839 | res = -ENOSYS; |
Miklos Szeredi | 7eafcce | 2004-06-19 22:42:38 +0000 | [diff] [blame] | 840 | if (f->op.open) |
Miklos Szeredi | 0a7077f | 2001-11-11 18:20:17 +0000 | [diff] [blame] | 841 | res = f->op.open(path, arg->flags); |
Miklos Szeredi | 40b9a5a | 2002-12-10 16:09:02 +0000 | [diff] [blame] | 842 | } |
| 843 | res2 = send_reply(f, in, res, NULL, 0); |
Miklos Szeredi | 7eafcce | 2004-06-19 22:42:38 +0000 | [diff] [blame] | 844 | if (path != NULL) { |
Miklos Szeredi | 40b9a5a | 2002-12-10 16:09:02 +0000 | [diff] [blame] | 845 | /* The open syscall was interrupted, so it must be cancelled */ |
Miklos Szeredi | 7eafcce | 2004-06-19 22:42:38 +0000 | [diff] [blame] | 846 | if (res == 0 && res2 == -ENOENT && f->op.release) |
Miklos Szeredi | 9478e86 | 2002-12-11 09:50:26 +0000 | [diff] [blame] | 847 | f->op.release(path, arg->flags); |
Miklos Szeredi | 97c61e9 | 2001-11-07 12:09:43 +0000 | [diff] [blame] | 848 | free(path); |
Miklos Szeredi | 5e18348 | 2001-10-31 14:52:35 +0000 | [diff] [blame] | 849 | } |
Miklos Szeredi | 5e18348 | 2001-10-31 14:52:35 +0000 | [diff] [blame] | 850 | } |
| 851 | |
Miklos Szeredi | e2e4ac2 | 2004-05-18 08:45:28 +0000 | [diff] [blame] | 852 | static void do_flush(struct fuse *f, struct fuse_in_header *in) |
| 853 | { |
| 854 | char *path; |
| 855 | int res; |
| 856 | |
| 857 | res = -ENOENT; |
| 858 | path = get_path(f, in->ino); |
Miklos Szeredi | 7eafcce | 2004-06-19 22:42:38 +0000 | [diff] [blame] | 859 | if (path != NULL) { |
Miklos Szeredi | e2e4ac2 | 2004-05-18 08:45:28 +0000 | [diff] [blame] | 860 | res = -ENOSYS; |
Miklos Szeredi | 7eafcce | 2004-06-19 22:42:38 +0000 | [diff] [blame] | 861 | if (f->op.flush) |
Miklos Szeredi | e2e4ac2 | 2004-05-18 08:45:28 +0000 | [diff] [blame] | 862 | res = f->op.flush(path); |
| 863 | free(path); |
| 864 | } |
| 865 | send_reply(f, in, res, NULL, 0); |
| 866 | } |
| 867 | |
Miklos Szeredi | 9478e86 | 2002-12-11 09:50:26 +0000 | [diff] [blame] | 868 | static void do_release(struct fuse *f, struct fuse_in_header *in, |
| 869 | struct fuse_open_in *arg) |
Miklos Szeredi | c8ba237 | 2002-12-10 12:26:00 +0000 | [diff] [blame] | 870 | { |
Miklos Szeredi | b321058 | 2004-06-23 13:54:33 +0000 | [diff] [blame] | 871 | if (f->op.release) { |
| 872 | char *path; |
Miklos Szeredi | c8ba237 | 2002-12-10 12:26:00 +0000 | [diff] [blame] | 873 | |
Miklos Szeredi | b321058 | 2004-06-23 13:54:33 +0000 | [diff] [blame] | 874 | path = get_path(f, in->ino); |
| 875 | if (path != NULL) { |
| 876 | f->op.release(path, arg->flags); |
| 877 | free(path); |
| 878 | } |
Miklos Szeredi | c8ba237 | 2002-12-10 12:26:00 +0000 | [diff] [blame] | 879 | } |
Miklos Szeredi | c8ba237 | 2002-12-10 12:26:00 +0000 | [diff] [blame] | 880 | } |
| 881 | |
Miklos Szeredi | 5e18348 | 2001-10-31 14:52:35 +0000 | [diff] [blame] | 882 | static void do_read(struct fuse *f, struct fuse_in_header *in, |
| 883 | struct fuse_read_in *arg) |
| 884 | { |
| 885 | int res; |
| 886 | char *path; |
Miklos Szeredi | 4369643 | 2001-11-18 19:15:05 +0000 | [diff] [blame] | 887 | char *outbuf = (char *) malloc(sizeof(struct fuse_out_header) + arg->size); |
| 888 | struct fuse_out_header *out = (struct fuse_out_header *) outbuf; |
| 889 | char *buf = outbuf + sizeof(struct fuse_out_header); |
Miklos Szeredi | 5e18348 | 2001-10-31 14:52:35 +0000 | [diff] [blame] | 890 | size_t size; |
Miklos Szeredi | 4369643 | 2001-11-18 19:15:05 +0000 | [diff] [blame] | 891 | size_t outsize; |
Miklos Szeredi | 5e18348 | 2001-10-31 14:52:35 +0000 | [diff] [blame] | 892 | |
Miklos Szeredi | 97c61e9 | 2001-11-07 12:09:43 +0000 | [diff] [blame] | 893 | res = -ENOENT; |
Miklos Szeredi | a181e61 | 2001-11-06 12:03:23 +0000 | [diff] [blame] | 894 | path = get_path(f, in->ino); |
Miklos Szeredi | 7eafcce | 2004-06-19 22:42:38 +0000 | [diff] [blame] | 895 | if (path != NULL) { |
| 896 | if (f->flags & FUSE_DEBUG) { |
Miklos Szeredi | 6ebe234 | 2002-01-06 21:44:16 +0000 | [diff] [blame] | 897 | printf("READ %u bytes from %llu\n", arg->size, arg->offset); |
| 898 | fflush(stdout); |
| 899 | } |
| 900 | |
Miklos Szeredi | 5e18348 | 2001-10-31 14:52:35 +0000 | [diff] [blame] | 901 | res = -ENOSYS; |
Miklos Szeredi | 7eafcce | 2004-06-19 22:42:38 +0000 | [diff] [blame] | 902 | if (f->op.read) |
Miklos Szeredi | 0a7077f | 2001-11-11 18:20:17 +0000 | [diff] [blame] | 903 | res = f->op.read(path, buf, arg->size, arg->offset); |
Miklos Szeredi | 97c61e9 | 2001-11-07 12:09:43 +0000 | [diff] [blame] | 904 | free(path); |
Miklos Szeredi | 5e18348 | 2001-10-31 14:52:35 +0000 | [diff] [blame] | 905 | } |
| 906 | |
| 907 | size = 0; |
Miklos Szeredi | 7eafcce | 2004-06-19 22:42:38 +0000 | [diff] [blame] | 908 | if (res > 0) { |
Miklos Szeredi | 5e18348 | 2001-10-31 14:52:35 +0000 | [diff] [blame] | 909 | size = res; |
| 910 | res = 0; |
Miklos Szeredi | 7eafcce | 2004-06-19 22:42:38 +0000 | [diff] [blame] | 911 | if (f->flags & FUSE_DEBUG) { |
Miklos Szeredi | 6ebe234 | 2002-01-06 21:44:16 +0000 | [diff] [blame] | 912 | printf(" READ %u bytes\n", size); |
| 913 | fflush(stdout); |
| 914 | } |
Miklos Szeredi | 5e18348 | 2001-10-31 14:52:35 +0000 | [diff] [blame] | 915 | } |
Miklos Szeredi | 0f48a26 | 2002-12-05 14:23:01 +0000 | [diff] [blame] | 916 | memset(out, 0, sizeof(struct fuse_out_header)); |
Miklos Szeredi | 4369643 | 2001-11-18 19:15:05 +0000 | [diff] [blame] | 917 | out->unique = in->unique; |
| 918 | out->error = res; |
| 919 | outsize = sizeof(struct fuse_out_header) + size; |
| 920 | |
| 921 | send_reply_raw(f, outbuf, outsize); |
| 922 | free(outbuf); |
Miklos Szeredi | 5e18348 | 2001-10-31 14:52:35 +0000 | [diff] [blame] | 923 | } |
Miklos Szeredi | b483c93 | 2001-10-29 14:57:57 +0000 | [diff] [blame] | 924 | |
Miklos Szeredi | a181e61 | 2001-11-06 12:03:23 +0000 | [diff] [blame] | 925 | static void do_write(struct fuse *f, struct fuse_in_header *in, |
| 926 | struct fuse_write_in *arg) |
| 927 | { |
| 928 | int res; |
| 929 | char *path; |
Miklos Szeredi | a181e61 | 2001-11-06 12:03:23 +0000 | [diff] [blame] | 930 | |
Miklos Szeredi | 97c61e9 | 2001-11-07 12:09:43 +0000 | [diff] [blame] | 931 | res = -ENOENT; |
Miklos Szeredi | a181e61 | 2001-11-06 12:03:23 +0000 | [diff] [blame] | 932 | path = get_path(f, in->ino); |
Miklos Szeredi | 7eafcce | 2004-06-19 22:42:38 +0000 | [diff] [blame] | 933 | if (path != NULL) { |
| 934 | if (f->flags & FUSE_DEBUG) { |
Miklos Szeredi | 6ebe234 | 2002-01-06 21:44:16 +0000 | [diff] [blame] | 935 | printf("WRITE %u bytes to %llu\n", arg->size, arg->offset); |
| 936 | fflush(stdout); |
| 937 | } |
| 938 | |
Miklos Szeredi | a181e61 | 2001-11-06 12:03:23 +0000 | [diff] [blame] | 939 | res = -ENOSYS; |
Miklos Szeredi | 7eafcce | 2004-06-19 22:42:38 +0000 | [diff] [blame] | 940 | if (f->op.write) |
Miklos Szeredi | 6bf8b68 | 2002-10-28 08:49:39 +0000 | [diff] [blame] | 941 | res = f->op.write(path, PARAM(arg), arg->size, arg->offset); |
Miklos Szeredi | 97c61e9 | 2001-11-07 12:09:43 +0000 | [diff] [blame] | 942 | free(path); |
Miklos Szeredi | a181e61 | 2001-11-06 12:03:23 +0000 | [diff] [blame] | 943 | } |
| 944 | |
Miklos Szeredi | 7eafcce | 2004-06-19 22:42:38 +0000 | [diff] [blame] | 945 | if (res > 0) { |
| 946 | if ((size_t) res != arg->size) { |
Miklos Szeredi | a181e61 | 2001-11-06 12:03:23 +0000 | [diff] [blame] | 947 | fprintf(stderr, "short write: %u (should be %u)\n", res, |
| 948 | arg->size); |
Miklos Szeredi | 0e53508 | 2003-10-13 10:08:06 +0000 | [diff] [blame] | 949 | res = -EINVAL; |
Miklos Szeredi | a181e61 | 2001-11-06 12:03:23 +0000 | [diff] [blame] | 950 | } |
| 951 | else |
| 952 | res = 0; |
| 953 | } |
| 954 | |
| 955 | send_reply(f, in, res, NULL, 0); |
| 956 | } |
| 957 | |
Miklos Szeredi | 77f3994 | 2004-03-25 11:17:52 +0000 | [diff] [blame] | 958 | static int default_statfs(struct statfs *buf) |
| 959 | { |
| 960 | buf->f_namelen = 255; |
| 961 | buf->f_bsize = 512; |
| 962 | return 0; |
| 963 | } |
| 964 | |
Miklos Szeredi | 18e75e4 | 2004-02-19 14:23:27 +0000 | [diff] [blame] | 965 | static void convert_statfs(struct statfs *statfs, struct fuse_kstatfs *kstatfs) |
| 966 | { |
| 967 | kstatfs->bsize = statfs->f_bsize; |
| 968 | kstatfs->blocks = statfs->f_blocks; |
| 969 | kstatfs->bfree = statfs->f_bfree; |
| 970 | kstatfs->bavail = statfs->f_bavail; |
| 971 | kstatfs->files = statfs->f_files; |
| 972 | kstatfs->ffree = statfs->f_ffree; |
| 973 | kstatfs->namelen = statfs->f_namelen; |
| 974 | } |
| 975 | |
Mark Glines | d84b39a | 2002-01-07 16:32:02 +0000 | [diff] [blame] | 976 | static void do_statfs(struct fuse *f, struct fuse_in_header *in) |
| 977 | { |
| 978 | int res; |
Mark Glines | d84b39a | 2002-01-07 16:32:02 +0000 | [diff] [blame] | 979 | struct fuse_statfs_out arg; |
Miklos Szeredi | 18e75e4 | 2004-02-19 14:23:27 +0000 | [diff] [blame] | 980 | struct statfs buf; |
Mark Glines | d84b39a | 2002-01-07 16:32:02 +0000 | [diff] [blame] | 981 | |
Miklos Szeredi | 77f3994 | 2004-03-25 11:17:52 +0000 | [diff] [blame] | 982 | memset(&buf, 0, sizeof(struct statfs)); |
Miklos Szeredi | 7eafcce | 2004-06-19 22:42:38 +0000 | [diff] [blame] | 983 | if (f->op.statfs) |
Miklos Szeredi | 18e75e4 | 2004-02-19 14:23:27 +0000 | [diff] [blame] | 984 | res = f->op.statfs("/", &buf); |
Miklos Szeredi | 77f3994 | 2004-03-25 11:17:52 +0000 | [diff] [blame] | 985 | else |
| 986 | res = default_statfs(&buf); |
| 987 | |
Miklos Szeredi | 7eafcce | 2004-06-19 22:42:38 +0000 | [diff] [blame] | 988 | if (res == 0) |
Miklos Szeredi | 77f3994 | 2004-03-25 11:17:52 +0000 | [diff] [blame] | 989 | convert_statfs(&buf, &arg.st); |
Miklos Szeredi | 4b2bef4 | 2002-01-09 12:23:27 +0000 | [diff] [blame] | 990 | |
Mark Glines | d84b39a | 2002-01-07 16:32:02 +0000 | [diff] [blame] | 991 | send_reply(f, in, res, &arg, sizeof(arg)); |
| 992 | } |
| 993 | |
Miklos Szeredi | 5e43f2c | 2003-12-12 14:06:41 +0000 | [diff] [blame] | 994 | static void do_fsync(struct fuse *f, struct fuse_in_header *in, |
| 995 | struct fuse_fsync_in *inarg) |
| 996 | { |
| 997 | int res; |
| 998 | char *path; |
| 999 | |
| 1000 | res = -ENOENT; |
| 1001 | path = get_path(f, in->ino); |
Miklos Szeredi | 7eafcce | 2004-06-19 22:42:38 +0000 | [diff] [blame] | 1002 | if (path != NULL) { |
Miklos Szeredi | 63b8c1c | 2004-06-03 14:45:04 +0000 | [diff] [blame] | 1003 | res = -ENOSYS; |
Miklos Szeredi | 7eafcce | 2004-06-19 22:42:38 +0000 | [diff] [blame] | 1004 | if (f->op.fsync) |
Miklos Szeredi | 5e43f2c | 2003-12-12 14:06:41 +0000 | [diff] [blame] | 1005 | res = f->op.fsync(path, inarg->datasync); |
| 1006 | free(path); |
| 1007 | } |
| 1008 | send_reply(f, in, res, NULL, 0); |
| 1009 | } |
| 1010 | |
Miklos Szeredi | 3ed8423 | 2004-03-30 15:17:26 +0000 | [diff] [blame] | 1011 | static void do_setxattr(struct fuse *f, struct fuse_in_header *in, |
| 1012 | struct fuse_setxattr_in *arg) |
| 1013 | { |
| 1014 | int res; |
| 1015 | char *path; |
| 1016 | char *name = PARAM(arg); |
| 1017 | unsigned char *value = name + strlen(name) + 1; |
| 1018 | |
| 1019 | res = -ENOENT; |
| 1020 | path = get_path(f, in->ino); |
| 1021 | if (path != NULL) { |
Miklos Szeredi | 63b8c1c | 2004-06-03 14:45:04 +0000 | [diff] [blame] | 1022 | res = -ENOSYS; |
Miklos Szeredi | 3ed8423 | 2004-03-30 15:17:26 +0000 | [diff] [blame] | 1023 | if (f->op.setxattr) |
| 1024 | res = f->op.setxattr(path, name, value, arg->size, arg->flags); |
| 1025 | free(path); |
| 1026 | } |
| 1027 | send_reply(f, in, res, NULL, 0); |
| 1028 | } |
| 1029 | |
Miklos Szeredi | 03cebae | 2004-03-31 10:19:18 +0000 | [diff] [blame] | 1030 | static int common_getxattr(struct fuse *f, struct fuse_in_header *in, |
| 1031 | const char *name, char *value, size_t size) |
Miklos Szeredi | 3ed8423 | 2004-03-30 15:17:26 +0000 | [diff] [blame] | 1032 | { |
| 1033 | int res; |
| 1034 | char *path; |
Miklos Szeredi | 3ed8423 | 2004-03-30 15:17:26 +0000 | [diff] [blame] | 1035 | |
| 1036 | res = -ENOENT; |
| 1037 | path = get_path(f, in->ino); |
| 1038 | if (path != NULL) { |
Miklos Szeredi | 63b8c1c | 2004-06-03 14:45:04 +0000 | [diff] [blame] | 1039 | res = -ENOSYS; |
Miklos Szeredi | 3ed8423 | 2004-03-30 15:17:26 +0000 | [diff] [blame] | 1040 | if (f->op.getxattr) |
Miklos Szeredi | 03cebae | 2004-03-31 10:19:18 +0000 | [diff] [blame] | 1041 | res = f->op.getxattr(path, name, value, size); |
Miklos Szeredi | 3ed8423 | 2004-03-30 15:17:26 +0000 | [diff] [blame] | 1042 | free(path); |
| 1043 | } |
Miklos Szeredi | 03cebae | 2004-03-31 10:19:18 +0000 | [diff] [blame] | 1044 | return res; |
| 1045 | } |
| 1046 | |
| 1047 | static void do_getxattr_read(struct fuse *f, struct fuse_in_header *in, |
| 1048 | const char *name, size_t size) |
| 1049 | { |
| 1050 | int res; |
| 1051 | char *outbuf = (char *) malloc(sizeof(struct fuse_out_header) + size); |
| 1052 | struct fuse_out_header *out = (struct fuse_out_header *) outbuf; |
| 1053 | char *value = outbuf + sizeof(struct fuse_out_header); |
| 1054 | |
| 1055 | res = common_getxattr(f, in, name, value, size); |
Miklos Szeredi | 3ed8423 | 2004-03-30 15:17:26 +0000 | [diff] [blame] | 1056 | size = 0; |
Miklos Szeredi | 7eafcce | 2004-06-19 22:42:38 +0000 | [diff] [blame] | 1057 | if (res > 0) { |
Miklos Szeredi | 3ed8423 | 2004-03-30 15:17:26 +0000 | [diff] [blame] | 1058 | size = res; |
| 1059 | res = 0; |
| 1060 | } |
| 1061 | memset(out, 0, sizeof(struct fuse_out_header)); |
| 1062 | out->unique = in->unique; |
| 1063 | out->error = res; |
Miklos Szeredi | 3ed8423 | 2004-03-30 15:17:26 +0000 | [diff] [blame] | 1064 | |
Miklos Szeredi | 03cebae | 2004-03-31 10:19:18 +0000 | [diff] [blame] | 1065 | send_reply_raw(f, outbuf, sizeof(struct fuse_out_header) + size); |
Miklos Szeredi | 3ed8423 | 2004-03-30 15:17:26 +0000 | [diff] [blame] | 1066 | free(outbuf); |
| 1067 | } |
| 1068 | |
Miklos Szeredi | 03cebae | 2004-03-31 10:19:18 +0000 | [diff] [blame] | 1069 | static void do_getxattr_size(struct fuse *f, struct fuse_in_header *in, |
| 1070 | const char *name) |
| 1071 | { |
| 1072 | int res; |
| 1073 | struct fuse_getxattr_out arg; |
| 1074 | |
| 1075 | res = common_getxattr(f, in, name, NULL, 0); |
Miklos Szeredi | 7eafcce | 2004-06-19 22:42:38 +0000 | [diff] [blame] | 1076 | if (res >= 0) { |
Miklos Szeredi | 03cebae | 2004-03-31 10:19:18 +0000 | [diff] [blame] | 1077 | arg.size = res; |
| 1078 | res = 0; |
| 1079 | } |
| 1080 | send_reply(f, in, res, &arg, sizeof(arg)); |
| 1081 | } |
| 1082 | |
| 1083 | static void do_getxattr(struct fuse *f, struct fuse_in_header *in, |
| 1084 | struct fuse_getxattr_in *arg) |
| 1085 | { |
| 1086 | char *name = PARAM(arg); |
| 1087 | |
Miklos Szeredi | 7eafcce | 2004-06-19 22:42:38 +0000 | [diff] [blame] | 1088 | if (arg->size) |
Miklos Szeredi | 03cebae | 2004-03-31 10:19:18 +0000 | [diff] [blame] | 1089 | do_getxattr_read(f, in, name, arg->size); |
| 1090 | else |
| 1091 | do_getxattr_size(f, in, name); |
| 1092 | } |
| 1093 | |
| 1094 | static int common_listxattr(struct fuse *f, struct fuse_in_header *in, |
| 1095 | char *list, size_t size) |
Miklos Szeredi | 3ed8423 | 2004-03-30 15:17:26 +0000 | [diff] [blame] | 1096 | { |
| 1097 | int res; |
| 1098 | char *path; |
Miklos Szeredi | 3ed8423 | 2004-03-30 15:17:26 +0000 | [diff] [blame] | 1099 | |
| 1100 | res = -ENOENT; |
| 1101 | path = get_path(f, in->ino); |
| 1102 | if (path != NULL) { |
Miklos Szeredi | 63b8c1c | 2004-06-03 14:45:04 +0000 | [diff] [blame] | 1103 | res = -ENOSYS; |
Miklos Szeredi | 3ed8423 | 2004-03-30 15:17:26 +0000 | [diff] [blame] | 1104 | if (f->op.listxattr) |
Miklos Szeredi | 03cebae | 2004-03-31 10:19:18 +0000 | [diff] [blame] | 1105 | res = f->op.listxattr(path, list, size); |
Miklos Szeredi | 3ed8423 | 2004-03-30 15:17:26 +0000 | [diff] [blame] | 1106 | free(path); |
| 1107 | } |
Miklos Szeredi | 03cebae | 2004-03-31 10:19:18 +0000 | [diff] [blame] | 1108 | return res; |
| 1109 | } |
| 1110 | |
| 1111 | static void do_listxattr_read(struct fuse *f, struct fuse_in_header *in, |
| 1112 | size_t size) |
| 1113 | { |
| 1114 | int res; |
| 1115 | char *outbuf = (char *) malloc(sizeof(struct fuse_out_header) + size); |
| 1116 | struct fuse_out_header *out = (struct fuse_out_header *) outbuf; |
| 1117 | char *list = outbuf + sizeof(struct fuse_out_header); |
| 1118 | |
| 1119 | res = common_listxattr(f, in, list, size); |
Miklos Szeredi | 3ed8423 | 2004-03-30 15:17:26 +0000 | [diff] [blame] | 1120 | size = 0; |
Miklos Szeredi | 7eafcce | 2004-06-19 22:42:38 +0000 | [diff] [blame] | 1121 | if (res > 0) { |
Miklos Szeredi | 3ed8423 | 2004-03-30 15:17:26 +0000 | [diff] [blame] | 1122 | size = res; |
| 1123 | res = 0; |
| 1124 | } |
| 1125 | memset(out, 0, sizeof(struct fuse_out_header)); |
| 1126 | out->unique = in->unique; |
| 1127 | out->error = res; |
Miklos Szeredi | 3ed8423 | 2004-03-30 15:17:26 +0000 | [diff] [blame] | 1128 | |
Miklos Szeredi | 03cebae | 2004-03-31 10:19:18 +0000 | [diff] [blame] | 1129 | send_reply_raw(f, outbuf, sizeof(struct fuse_out_header) + size); |
Miklos Szeredi | 3ed8423 | 2004-03-30 15:17:26 +0000 | [diff] [blame] | 1130 | free(outbuf); |
| 1131 | } |
| 1132 | |
Miklos Szeredi | 03cebae | 2004-03-31 10:19:18 +0000 | [diff] [blame] | 1133 | static void do_listxattr_size(struct fuse *f, struct fuse_in_header *in) |
| 1134 | { |
| 1135 | int res; |
| 1136 | struct fuse_getxattr_out arg; |
| 1137 | |
| 1138 | res = common_listxattr(f, in, NULL, 0); |
| 1139 | if (res >= 0) { |
| 1140 | arg.size = res; |
| 1141 | res = 0; |
| 1142 | } |
| 1143 | send_reply(f, in, res, &arg, sizeof(arg)); |
| 1144 | } |
| 1145 | |
| 1146 | static void do_listxattr(struct fuse *f, struct fuse_in_header *in, |
| 1147 | struct fuse_getxattr_in *arg) |
| 1148 | { |
Miklos Szeredi | 7eafcce | 2004-06-19 22:42:38 +0000 | [diff] [blame] | 1149 | if (arg->size) |
Miklos Szeredi | 03cebae | 2004-03-31 10:19:18 +0000 | [diff] [blame] | 1150 | do_listxattr_read(f, in, arg->size); |
| 1151 | else |
| 1152 | do_listxattr_size(f, in); |
| 1153 | } |
| 1154 | |
Miklos Szeredi | 3ed8423 | 2004-03-30 15:17:26 +0000 | [diff] [blame] | 1155 | static void do_removexattr(struct fuse *f, struct fuse_in_header *in, |
| 1156 | char *name) |
| 1157 | { |
| 1158 | int res; |
| 1159 | char *path; |
| 1160 | |
| 1161 | res = -ENOENT; |
| 1162 | path = get_path(f, in->ino); |
| 1163 | if (path != NULL) { |
Miklos Szeredi | 63b8c1c | 2004-06-03 14:45:04 +0000 | [diff] [blame] | 1164 | res = -ENOSYS; |
Miklos Szeredi | 3ed8423 | 2004-03-30 15:17:26 +0000 | [diff] [blame] | 1165 | if (f->op.removexattr) |
| 1166 | res = f->op.removexattr(path, name); |
| 1167 | free(path); |
| 1168 | } |
| 1169 | send_reply(f, in, res, NULL, 0); |
| 1170 | } |
| 1171 | |
| 1172 | |
Miklos Szeredi | 4369643 | 2001-11-18 19:15:05 +0000 | [diff] [blame] | 1173 | static void free_cmd(struct fuse_cmd *cmd) |
| 1174 | { |
| 1175 | free(cmd->buf); |
| 1176 | free(cmd); |
| 1177 | } |
| 1178 | |
Miklos Szeredi | fff56ab | 2001-11-16 10:12:59 +0000 | [diff] [blame] | 1179 | void __fuse_process_cmd(struct fuse *f, struct fuse_cmd *cmd) |
Miklos Szeredi | a181e61 | 2001-11-06 12:03:23 +0000 | [diff] [blame] | 1180 | { |
Miklos Szeredi | a181e61 | 2001-11-06 12:03:23 +0000 | [diff] [blame] | 1181 | struct fuse_in_header *in = (struct fuse_in_header *) cmd->buf; |
| 1182 | void *inarg = cmd->buf + sizeof(struct fuse_in_header); |
| 1183 | size_t argsize; |
Miklos Szeredi | fe25def | 2001-12-20 15:38:05 +0000 | [diff] [blame] | 1184 | struct fuse_context *ctx = fuse_get_context(f); |
Miklos Szeredi | a181e61 | 2001-11-06 12:03:23 +0000 | [diff] [blame] | 1185 | |
Miklos Szeredi | 99ddf0e | 2001-11-25 17:19:59 +0000 | [diff] [blame] | 1186 | dec_avail(f); |
Miklos Szeredi | 3323203 | 2001-11-19 17:55:51 +0000 | [diff] [blame] | 1187 | |
Miklos Szeredi | 7eafcce | 2004-06-19 22:42:38 +0000 | [diff] [blame] | 1188 | if ((f->flags & FUSE_DEBUG)) { |
Miklos Szeredi | c8ba237 | 2002-12-10 12:26:00 +0000 | [diff] [blame] | 1189 | printf("unique: %i, opcode: %s (%i), ino: %li, insize: %i\n", |
| 1190 | in->unique, opname(in->opcode), in->opcode, in->ino, |
| 1191 | cmd->buflen); |
Miklos Szeredi | c0938ea | 2001-11-07 12:35:06 +0000 | [diff] [blame] | 1192 | fflush(stdout); |
| 1193 | } |
Miklos Szeredi | fe25def | 2001-12-20 15:38:05 +0000 | [diff] [blame] | 1194 | |
| 1195 | ctx->uid = in->uid; |
| 1196 | ctx->gid = in->gid; |
Miklos Szeredi | a181e61 | 2001-11-06 12:03:23 +0000 | [diff] [blame] | 1197 | |
| 1198 | argsize = cmd->buflen - sizeof(struct fuse_in_header); |
| 1199 | |
Miklos Szeredi | 7eafcce | 2004-06-19 22:42:38 +0000 | [diff] [blame] | 1200 | switch (in->opcode) { |
Miklos Szeredi | a181e61 | 2001-11-06 12:03:23 +0000 | [diff] [blame] | 1201 | case FUSE_LOOKUP: |
| 1202 | do_lookup(f, in, (char *) inarg); |
| 1203 | break; |
| 1204 | |
Miklos Szeredi | a181e61 | 2001-11-06 12:03:23 +0000 | [diff] [blame] | 1205 | case FUSE_GETATTR: |
| 1206 | do_getattr(f, in); |
| 1207 | break; |
| 1208 | |
| 1209 | case FUSE_SETATTR: |
| 1210 | do_setattr(f, in, (struct fuse_setattr_in *) inarg); |
| 1211 | break; |
| 1212 | |
| 1213 | case FUSE_READLINK: |
| 1214 | do_readlink(f, in); |
| 1215 | break; |
| 1216 | |
| 1217 | case FUSE_GETDIR: |
| 1218 | do_getdir(f, in); |
| 1219 | break; |
| 1220 | |
| 1221 | case FUSE_MKNOD: |
| 1222 | do_mknod(f, in, (struct fuse_mknod_in *) inarg); |
| 1223 | break; |
| 1224 | |
| 1225 | case FUSE_MKDIR: |
| 1226 | do_mkdir(f, in, (struct fuse_mkdir_in *) inarg); |
| 1227 | break; |
| 1228 | |
| 1229 | case FUSE_UNLINK: |
Miklos Szeredi | b595861 | 2004-02-20 14:10:49 +0000 | [diff] [blame] | 1230 | do_unlink(f, in, (char *) inarg); |
| 1231 | break; |
| 1232 | |
Miklos Szeredi | a181e61 | 2001-11-06 12:03:23 +0000 | [diff] [blame] | 1233 | case FUSE_RMDIR: |
Miklos Szeredi | b595861 | 2004-02-20 14:10:49 +0000 | [diff] [blame] | 1234 | do_rmdir(f, in, (char *) inarg); |
Miklos Szeredi | a181e61 | 2001-11-06 12:03:23 +0000 | [diff] [blame] | 1235 | break; |
| 1236 | |
| 1237 | case FUSE_SYMLINK: |
| 1238 | do_symlink(f, in, (char *) inarg, |
| 1239 | ((char *) inarg) + strlen((char *) inarg) + 1); |
| 1240 | break; |
| 1241 | |
| 1242 | case FUSE_RENAME: |
| 1243 | do_rename(f, in, (struct fuse_rename_in *) inarg); |
| 1244 | break; |
| 1245 | |
| 1246 | case FUSE_LINK: |
| 1247 | do_link(f, in, (struct fuse_link_in *) inarg); |
| 1248 | break; |
| 1249 | |
| 1250 | case FUSE_OPEN: |
| 1251 | do_open(f, in, (struct fuse_open_in *) inarg); |
| 1252 | break; |
| 1253 | |
Miklos Szeredi | e2e4ac2 | 2004-05-18 08:45:28 +0000 | [diff] [blame] | 1254 | case FUSE_FLUSH: |
| 1255 | do_flush(f, in); |
| 1256 | break; |
| 1257 | |
Miklos Szeredi | 9478e86 | 2002-12-11 09:50:26 +0000 | [diff] [blame] | 1258 | case FUSE_RELEASE: |
| 1259 | do_release(f, in, (struct fuse_open_in *) inarg); |
| 1260 | break; |
| 1261 | |
Miklos Szeredi | a181e61 | 2001-11-06 12:03:23 +0000 | [diff] [blame] | 1262 | case FUSE_READ: |
| 1263 | do_read(f, in, (struct fuse_read_in *) inarg); |
| 1264 | break; |
| 1265 | |
| 1266 | case FUSE_WRITE: |
| 1267 | do_write(f, in, (struct fuse_write_in *) inarg); |
| 1268 | break; |
| 1269 | |
Mark Glines | d84b39a | 2002-01-07 16:32:02 +0000 | [diff] [blame] | 1270 | case FUSE_STATFS: |
| 1271 | do_statfs(f, in); |
| 1272 | break; |
| 1273 | |
Miklos Szeredi | 5e43f2c | 2003-12-12 14:06:41 +0000 | [diff] [blame] | 1274 | case FUSE_FSYNC: |
| 1275 | do_fsync(f, in, (struct fuse_fsync_in *) inarg); |
| 1276 | break; |
| 1277 | |
Miklos Szeredi | 3ed8423 | 2004-03-30 15:17:26 +0000 | [diff] [blame] | 1278 | case FUSE_SETXATTR: |
| 1279 | do_setxattr(f, in, (struct fuse_setxattr_in *) inarg); |
| 1280 | break; |
| 1281 | |
| 1282 | case FUSE_GETXATTR: |
Miklos Szeredi | 03cebae | 2004-03-31 10:19:18 +0000 | [diff] [blame] | 1283 | do_getxattr(f, in, (struct fuse_getxattr_in *) inarg); |
Miklos Szeredi | 3ed8423 | 2004-03-30 15:17:26 +0000 | [diff] [blame] | 1284 | break; |
| 1285 | |
| 1286 | case FUSE_LISTXATTR: |
Miklos Szeredi | 03cebae | 2004-03-31 10:19:18 +0000 | [diff] [blame] | 1287 | do_listxattr(f, in, (struct fuse_getxattr_in *) inarg); |
Miklos Szeredi | 3ed8423 | 2004-03-30 15:17:26 +0000 | [diff] [blame] | 1288 | break; |
| 1289 | |
| 1290 | case FUSE_REMOVEXATTR: |
| 1291 | do_removexattr(f, in, (char *) inarg); |
| 1292 | break; |
| 1293 | |
Miklos Szeredi | a181e61 | 2001-11-06 12:03:23 +0000 | [diff] [blame] | 1294 | default: |
Miklos Szeredi | 4369643 | 2001-11-18 19:15:05 +0000 | [diff] [blame] | 1295 | send_reply(f, in, -ENOSYS, NULL, 0); |
Miklos Szeredi | a181e61 | 2001-11-06 12:03:23 +0000 | [diff] [blame] | 1296 | } |
Miklos Szeredi | 4369643 | 2001-11-18 19:15:05 +0000 | [diff] [blame] | 1297 | |
| 1298 | free_cmd(cmd); |
Miklos Szeredi | a181e61 | 2001-11-06 12:03:23 +0000 | [diff] [blame] | 1299 | } |
| 1300 | |
Miklos Szeredi | fff56ab | 2001-11-16 10:12:59 +0000 | [diff] [blame] | 1301 | struct fuse_cmd *__fuse_read_cmd(struct fuse *f) |
Miklos Szeredi | 2df1c04 | 2001-11-06 15:07:17 +0000 | [diff] [blame] | 1302 | { |
Miklos Szeredi | fff56ab | 2001-11-16 10:12:59 +0000 | [diff] [blame] | 1303 | ssize_t res; |
Miklos Szeredi | fff56ab | 2001-11-16 10:12:59 +0000 | [diff] [blame] | 1304 | struct fuse_cmd *cmd; |
Miklos Szeredi | 99ddf0e | 2001-11-25 17:19:59 +0000 | [diff] [blame] | 1305 | struct fuse_in_header *in; |
| 1306 | void *inarg; |
Miklos Szeredi | fff56ab | 2001-11-16 10:12:59 +0000 | [diff] [blame] | 1307 | |
Miklos Szeredi | 4369643 | 2001-11-18 19:15:05 +0000 | [diff] [blame] | 1308 | cmd = (struct fuse_cmd *) malloc(sizeof(struct fuse_cmd)); |
| 1309 | cmd->buf = (char *) malloc(FUSE_MAX_IN); |
Miklos Szeredi | 99ddf0e | 2001-11-25 17:19:59 +0000 | [diff] [blame] | 1310 | in = (struct fuse_in_header *) cmd->buf; |
| 1311 | inarg = cmd->buf + sizeof(struct fuse_in_header); |
Miklos Szeredi | 4369643 | 2001-11-18 19:15:05 +0000 | [diff] [blame] | 1312 | |
Miklos Szeredi | 99ddf0e | 2001-11-25 17:19:59 +0000 | [diff] [blame] | 1313 | do { |
| 1314 | res = read(f->fd, cmd->buf, FUSE_MAX_IN); |
Miklos Szeredi | 7eafcce | 2004-06-19 22:42:38 +0000 | [diff] [blame] | 1315 | if (res == -1) { |
Miklos Szeredi | 0f48a26 | 2002-12-05 14:23:01 +0000 | [diff] [blame] | 1316 | free_cmd(cmd); |
Miklos Szeredi | 7eafcce | 2004-06-19 22:42:38 +0000 | [diff] [blame] | 1317 | if (f->exited || errno == EINTR) |
Miklos Szeredi | 0f48a26 | 2002-12-05 14:23:01 +0000 | [diff] [blame] | 1318 | return NULL; |
| 1319 | |
Miklos Szeredi | 99ddf0e | 2001-11-25 17:19:59 +0000 | [diff] [blame] | 1320 | /* ENODEV means we got unmounted, so we silenty return failure */ |
Miklos Szeredi | 7eafcce | 2004-06-19 22:42:38 +0000 | [diff] [blame] | 1321 | if (errno != ENODEV) { |
Miklos Szeredi | 99ddf0e | 2001-11-25 17:19:59 +0000 | [diff] [blame] | 1322 | /* BAD... This will happen again */ |
Miklos Szeredi | 0f48a26 | 2002-12-05 14:23:01 +0000 | [diff] [blame] | 1323 | perror("fuse: reading device"); |
Miklos Szeredi | 99ddf0e | 2001-11-25 17:19:59 +0000 | [diff] [blame] | 1324 | } |
Miklos Szeredi | 0f48a26 | 2002-12-05 14:23:01 +0000 | [diff] [blame] | 1325 | |
| 1326 | fuse_exit(f); |
Miklos Szeredi | 99ddf0e | 2001-11-25 17:19:59 +0000 | [diff] [blame] | 1327 | return NULL; |
Miklos Szeredi | 9624998 | 2001-11-21 12:21:19 +0000 | [diff] [blame] | 1328 | } |
Miklos Szeredi | 7eafcce | 2004-06-19 22:42:38 +0000 | [diff] [blame] | 1329 | if ((size_t) res < sizeof(struct fuse_in_header)) { |
Miklos Szeredi | 99ddf0e | 2001-11-25 17:19:59 +0000 | [diff] [blame] | 1330 | free_cmd(cmd); |
Miklos Szeredi | 0f48a26 | 2002-12-05 14:23:01 +0000 | [diff] [blame] | 1331 | /* Cannot happen */ |
| 1332 | fprintf(stderr, "short read on fuse device\n"); |
| 1333 | fuse_exit(f); |
Miklos Szeredi | 99ddf0e | 2001-11-25 17:19:59 +0000 | [diff] [blame] | 1334 | return NULL; |
| 1335 | } |
| 1336 | cmd->buflen = res; |
| 1337 | |
| 1338 | /* Forget is special, it can be done without messing with threads. */ |
Miklos Szeredi | 7eafcce | 2004-06-19 22:42:38 +0000 | [diff] [blame] | 1339 | if (in->opcode == FUSE_FORGET) |
Miklos Szeredi | 99ddf0e | 2001-11-25 17:19:59 +0000 | [diff] [blame] | 1340 | do_forget(f, in, (struct fuse_forget_in *) inarg); |
| 1341 | |
Miklos Szeredi | 7eafcce | 2004-06-19 22:42:38 +0000 | [diff] [blame] | 1342 | } while (in->opcode == FUSE_FORGET); |
Miklos Szeredi | 99ddf0e | 2001-11-25 17:19:59 +0000 | [diff] [blame] | 1343 | |
Miklos Szeredi | fff56ab | 2001-11-16 10:12:59 +0000 | [diff] [blame] | 1344 | return cmd; |
Miklos Szeredi | 2df1c04 | 2001-11-06 15:07:17 +0000 | [diff] [blame] | 1345 | } |
| 1346 | |
Miklos Szeredi | 85c74fc | 2001-10-28 19:44:14 +0000 | [diff] [blame] | 1347 | void fuse_loop(struct fuse *f) |
| 1348 | { |
Miklos Szeredi | 7eafcce | 2004-06-19 22:42:38 +0000 | [diff] [blame] | 1349 | if (f == NULL) |
Miklos Szeredi | c40748a | 2004-02-20 16:38:45 +0000 | [diff] [blame] | 1350 | return; |
| 1351 | |
Miklos Szeredi | 7eafcce | 2004-06-19 22:42:38 +0000 | [diff] [blame] | 1352 | while (1) { |
Miklos Szeredi | 0f48a26 | 2002-12-05 14:23:01 +0000 | [diff] [blame] | 1353 | struct fuse_cmd *cmd; |
| 1354 | |
Miklos Szeredi | 7eafcce | 2004-06-19 22:42:38 +0000 | [diff] [blame] | 1355 | if (f->exited) |
Miklos Szeredi | 0f48a26 | 2002-12-05 14:23:01 +0000 | [diff] [blame] | 1356 | return; |
| 1357 | |
| 1358 | cmd = __fuse_read_cmd(f); |
Miklos Szeredi | 7eafcce | 2004-06-19 22:42:38 +0000 | [diff] [blame] | 1359 | if (cmd == NULL) |
Miklos Szeredi | 0f48a26 | 2002-12-05 14:23:01 +0000 | [diff] [blame] | 1360 | continue; |
Miklos Szeredi | 85c74fc | 2001-10-28 19:44:14 +0000 | [diff] [blame] | 1361 | |
Miklos Szeredi | fff56ab | 2001-11-16 10:12:59 +0000 | [diff] [blame] | 1362 | __fuse_process_cmd(f, cmd); |
Miklos Szeredi | 85c74fc | 2001-10-28 19:44:14 +0000 | [diff] [blame] | 1363 | } |
| 1364 | } |
| 1365 | |
Miklos Szeredi | 0f48a26 | 2002-12-05 14:23:01 +0000 | [diff] [blame] | 1366 | void fuse_exit(struct fuse *f) |
| 1367 | { |
| 1368 | f->exited = 1; |
| 1369 | } |
| 1370 | |
Miklos Szeredi | 2e50d43 | 2001-12-20 12:17:25 +0000 | [diff] [blame] | 1371 | struct fuse_context *fuse_get_context(struct fuse *f) |
| 1372 | { |
Miklos Szeredi | 7eafcce | 2004-06-19 22:42:38 +0000 | [diff] [blame] | 1373 | if (f->getcontext) |
Miklos Szeredi | 2e50d43 | 2001-12-20 12:17:25 +0000 | [diff] [blame] | 1374 | return f->getcontext(f); |
| 1375 | else |
| 1376 | return &f->context; |
| 1377 | } |
| 1378 | |
Miklos Szeredi | c40748a | 2004-02-20 16:38:45 +0000 | [diff] [blame] | 1379 | static int check_version(struct fuse *f) |
| 1380 | { |
| 1381 | int res; |
| 1382 | FILE *vf = fopen(FUSE_VERSION_FILE, "r"); |
Miklos Szeredi | 7eafcce | 2004-06-19 22:42:38 +0000 | [diff] [blame] | 1383 | if (vf == NULL) { |
Miklos Szeredi | c40748a | 2004-02-20 16:38:45 +0000 | [diff] [blame] | 1384 | fprintf(stderr, "fuse: kernel interface too old, need >= %i.%i\n", |
| 1385 | FUSE_KERNEL_VERSION, FUSE_KERNEL_MINOR_VERSION); |
| 1386 | return -1; |
| 1387 | } |
| 1388 | res = fscanf(vf, "%i.%i", &f->majorver, &f->minorver); |
| 1389 | fclose(vf); |
Miklos Szeredi | 7eafcce | 2004-06-19 22:42:38 +0000 | [diff] [blame] | 1390 | if (res != 2) { |
Miklos Szeredi | c40748a | 2004-02-20 16:38:45 +0000 | [diff] [blame] | 1391 | fprintf(stderr, "fuse: error reading %s\n", FUSE_VERSION_FILE); |
| 1392 | return -1; |
| 1393 | } |
Miklos Szeredi | 7eafcce | 2004-06-19 22:42:38 +0000 | [diff] [blame] | 1394 | if (f->majorver != FUSE_KERNEL_VERSION) { |
Miklos Szeredi | c40748a | 2004-02-20 16:38:45 +0000 | [diff] [blame] | 1395 | fprintf(stderr, "fuse: bad kernel interface major version: needs %i\n", |
| 1396 | FUSE_KERNEL_VERSION); |
| 1397 | return -1; |
| 1398 | } |
Miklos Szeredi | 7eafcce | 2004-06-19 22:42:38 +0000 | [diff] [blame] | 1399 | if (f->minorver < FUSE_KERNEL_MINOR_VERSION) { |
Miklos Szeredi | c40748a | 2004-02-20 16:38:45 +0000 | [diff] [blame] | 1400 | fprintf(stderr, "fuse: kernel interface too old: need >= %i.%i", |
| 1401 | FUSE_KERNEL_VERSION, FUSE_KERNEL_MINOR_VERSION); |
| 1402 | return -1; |
| 1403 | } |
| 1404 | |
| 1405 | return 0; |
| 1406 | } |
| 1407 | |
Miklos Szeredi | 2e50d43 | 2001-12-20 12:17:25 +0000 | [diff] [blame] | 1408 | 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] | 1409 | { |
Miklos Szeredi | 97c61e9 | 2001-11-07 12:09:43 +0000 | [diff] [blame] | 1410 | struct fuse *f; |
| 1411 | struct node *root; |
Miklos Szeredi | 85c74fc | 2001-10-28 19:44:14 +0000 | [diff] [blame] | 1412 | |
Miklos Szeredi | 97c61e9 | 2001-11-07 12:09:43 +0000 | [diff] [blame] | 1413 | f = (struct fuse *) calloc(1, sizeof(struct fuse)); |
Miklos Szeredi | 2df1c04 | 2001-11-06 15:07:17 +0000 | [diff] [blame] | 1414 | |
Miklos Szeredi | 7eafcce | 2004-06-19 22:42:38 +0000 | [diff] [blame] | 1415 | if (check_version(f) == -1) { |
Miklos Szeredi | c40748a | 2004-02-20 16:38:45 +0000 | [diff] [blame] | 1416 | free(f); |
| 1417 | return NULL; |
| 1418 | } |
| 1419 | |
Miklos Szeredi | a181e61 | 2001-11-06 12:03:23 +0000 | [diff] [blame] | 1420 | f->flags = flags; |
Miklos Szeredi | 8cffdb9 | 2001-11-09 14:49:18 +0000 | [diff] [blame] | 1421 | f->fd = fd; |
Miklos Szeredi | 97c61e9 | 2001-11-07 12:09:43 +0000 | [diff] [blame] | 1422 | f->ctr = 0; |
Miklos Szeredi | 76f6578 | 2004-02-19 16:55:40 +0000 | [diff] [blame] | 1423 | f->generation = 0; |
Miklos Szeredi | fff56ab | 2001-11-16 10:12:59 +0000 | [diff] [blame] | 1424 | /* FIXME: Dynamic hash table */ |
Miklos Szeredi | 97c61e9 | 2001-11-07 12:09:43 +0000 | [diff] [blame] | 1425 | f->name_table_size = 14057; |
| 1426 | f->name_table = (struct node **) |
| 1427 | calloc(1, sizeof(struct node *) * f->name_table_size); |
| 1428 | f->ino_table_size = 14057; |
| 1429 | f->ino_table = (struct node **) |
| 1430 | calloc(1, sizeof(struct node *) * f->ino_table_size); |
Miklos Szeredi | a181e61 | 2001-11-06 12:03:23 +0000 | [diff] [blame] | 1431 | pthread_mutex_init(&f->lock, NULL); |
Miklos Szeredi | 3323203 | 2001-11-19 17:55:51 +0000 | [diff] [blame] | 1432 | f->numworker = 0; |
| 1433 | f->numavail = 0; |
Miklos Szeredi | 2e50d43 | 2001-12-20 12:17:25 +0000 | [diff] [blame] | 1434 | f->op = *op; |
| 1435 | f->getcontext = NULL; |
| 1436 | f->context.uid = 0; |
| 1437 | f->context.gid = 0; |
Miklos Szeredi | 0f48a26 | 2002-12-05 14:23:01 +0000 | [diff] [blame] | 1438 | f->exited = 0; |
Miklos Szeredi | 85c74fc | 2001-10-28 19:44:14 +0000 | [diff] [blame] | 1439 | |
Miklos Szeredi | 97c61e9 | 2001-11-07 12:09:43 +0000 | [diff] [blame] | 1440 | root = (struct node *) calloc(1, sizeof(struct node)); |
Miklos Szeredi | 8cffdb9 | 2001-11-09 14:49:18 +0000 | [diff] [blame] | 1441 | root->mode = 0; |
Miklos Szeredi | 97c61e9 | 2001-11-07 12:09:43 +0000 | [diff] [blame] | 1442 | root->rdev = 0; |
| 1443 | root->name = strdup("/"); |
| 1444 | root->parent = 0; |
Miklos Szeredi | 76f6578 | 2004-02-19 16:55:40 +0000 | [diff] [blame] | 1445 | root->ino = FUSE_ROOT_INO; |
| 1446 | root->generation = 0; |
| 1447 | hash_ino(f, root); |
Miklos Szeredi | 97c61e9 | 2001-11-07 12:09:43 +0000 | [diff] [blame] | 1448 | |
Miklos Szeredi | 85c74fc | 2001-10-28 19:44:14 +0000 | [diff] [blame] | 1449 | return f; |
| 1450 | } |
| 1451 | |
Miklos Szeredi | 85c74fc | 2001-10-28 19:44:14 +0000 | [diff] [blame] | 1452 | void fuse_destroy(struct fuse *f) |
| 1453 | { |
Miklos Szeredi | 97c61e9 | 2001-11-07 12:09:43 +0000 | [diff] [blame] | 1454 | size_t i; |
Miklos Szeredi | 7eafcce | 2004-06-19 22:42:38 +0000 | [diff] [blame] | 1455 | for (i = 0; i < f->ino_table_size; i++) { |
Miklos Szeredi | 97c61e9 | 2001-11-07 12:09:43 +0000 | [diff] [blame] | 1456 | struct node *node; |
| 1457 | struct node *next; |
Miklos Szeredi | 7eafcce | 2004-06-19 22:42:38 +0000 | [diff] [blame] | 1458 | for (node = f->ino_table[i]; node != NULL; node = next) { |
Miklos Szeredi | 97c61e9 | 2001-11-07 12:09:43 +0000 | [diff] [blame] | 1459 | next = node->ino_next; |
| 1460 | free_node(node); |
| 1461 | } |
| 1462 | } |
| 1463 | free(f->ino_table); |
| 1464 | free(f->name_table); |
Miklos Szeredi | a181e61 | 2001-11-06 12:03:23 +0000 | [diff] [blame] | 1465 | pthread_mutex_destroy(&f->lock); |
Miklos Szeredi | 97c61e9 | 2001-11-07 12:09:43 +0000 | [diff] [blame] | 1466 | free(f); |
Miklos Szeredi | 85c74fc | 2001-10-28 19:44:14 +0000 | [diff] [blame] | 1467 | } |