diff options
Diffstat (limited to 'lib/fuse.c')
| -rw-r--r-- | lib/fuse.c | 4987 |
1 files changed, 2513 insertions, 2474 deletions
@@ -1,9 +1,9 @@ /* - FUSE: Filesystem in Userspace - Copyright (C) 2001-2007 Miklos Szeredi <miklos@szeredi.hu> + FUSE: Filesystem in Userspace + Copyright (C) 2001-2007 Miklos Szeredi <miklos@szeredi.hu> - This program can be distributed under the terms of the GNU LGPLv2. - See the file COPYING.LIB + This program can be distributed under the terms of the GNU LGPLv2. + See the file COPYING.LIB */ @@ -40,109 +40,109 @@ #define OFFSET_MAX 0x7fffffffffffffffLL struct fuse_config { - unsigned int uid; - unsigned int gid; - unsigned int umask; - double entry_timeout; - double negative_timeout; - double attr_timeout; - double ac_attr_timeout; - int ac_attr_timeout_set; - int debug; - int hard_remove; - int use_ino; - int readdir_ino; - int set_mode; - int set_uid; - int set_gid; - int direct_io; - int kernel_cache; - int auto_cache; - int intr; - int intr_signal; - int help; - char *modules; + unsigned int uid; + unsigned int gid; + unsigned int umask; + double entry_timeout; + double negative_timeout; + double attr_timeout; + double ac_attr_timeout; + int ac_attr_timeout_set; + int debug; + int hard_remove; + int use_ino; + int readdir_ino; + int set_mode; + int set_uid; + int set_gid; + int direct_io; + int kernel_cache; + int auto_cache; + int intr; + int intr_signal; + int help; + char *modules; }; struct fuse_fs { - struct fuse_operations op; - struct fuse_module *m; - void *user_data; - int compat; + struct fuse_operations op; + struct fuse_module *m; + void *user_data; + int compat; }; struct fusemod_so { - void *handle; - int ctr; + void *handle; + int ctr; }; struct fuse { - struct fuse_session *se; - struct node **name_table; - size_t name_table_size; - struct node **id_table; - size_t id_table_size; - fuse_ino_t ctr; - unsigned int generation; - unsigned int hidectr; - pthread_mutex_t lock; - pthread_rwlock_t tree_lock; - struct fuse_config conf; - int intr_installed; - struct fuse_fs *fs; + struct fuse_session *se; + struct node **name_table; + size_t name_table_size; + struct node **id_table; + size_t id_table_size; + fuse_ino_t ctr; + unsigned int generation; + unsigned int hidectr; + pthread_mutex_t lock; + pthread_rwlock_t tree_lock; + struct fuse_config conf; + int intr_installed; + struct fuse_fs *fs; }; struct lock { - int type; - off_t start; - off_t end; - pid_t pid; - uint64_t owner; - struct lock *next; + int type; + off_t start; + off_t end; + pid_t pid; + uint64_t owner; + struct lock *next; }; struct node { - struct node *name_next; - struct node *id_next; - fuse_ino_t nodeid; - unsigned int generation; - int refctr; - struct node *parent; - char *name; - uint64_t nlookup; - int open_count; - int is_hidden; - struct timespec stat_updated; - struct timespec mtime; - off_t size; - int cache_valid; - struct lock *locks; + struct node *name_next; + struct node *id_next; + fuse_ino_t nodeid; + unsigned int generation; + int refctr; + struct node *parent; + char *name; + uint64_t nlookup; + int open_count; + int is_hidden; + struct timespec stat_updated; + struct timespec mtime; + off_t size; + int cache_valid; + struct lock *locks; }; struct fuse_dh { - pthread_mutex_t lock; - struct fuse *fuse; - fuse_req_t req; - char *contents; - int allocated; - unsigned len; - unsigned size; - unsigned needlen; - int filled; - uint64_t fh; - int error; - fuse_ino_t nodeid; + pthread_mutex_t lock; + struct fuse *fuse; + fuse_req_t req; + char *contents; + int allocated; + unsigned len; + unsigned size; + unsigned needlen; + int filled; + uint64_t fh; + int error; + fuse_ino_t nodeid; }; /* old dir handle */ struct fuse_dirhandle { - fuse_fill_dir_t filler; - void *buf; + fuse_fill_dir_t filler; + void *buf; }; struct fuse_context_i { - struct fuse_context ctx; - fuse_req_t req; + struct fuse_context ctx; + fuse_req_t req; }; static pthread_key_t fuse_context_key; @@ -153,1017 +153,1025 @@ static struct fuse_module *fuse_modules; static int fuse_load_so_name(const char *soname) { - struct fusemod_so *so; - - so = calloc(1, sizeof(struct fusemod_so)); - if (!so) { - fprintf(stderr, "fuse: memory allocation failed\n"); - return -1; - } - - fuse_current_so = so; - so->handle = dlopen(soname, RTLD_NOW); - fuse_current_so = NULL; - if (!so->handle) { - fprintf(stderr, "fuse: %s\n", dlerror()); - goto err; - } - if (!so->ctr) { - fprintf(stderr, "fuse: %s did not register any modules", soname); - goto err; - } - return 0; - - err: - if (so->handle) - dlclose(so->handle); - free(so); - return -1; + struct fusemod_so *so; + + so = calloc(1, sizeof(struct fusemod_so)); + if (!so) { + fprintf(stderr, "fuse: memory allocation failed\n"); + return -1; + } + + fuse_current_so = so; + so->handle = dlopen(soname, RTLD_NOW); + fuse_current_so = NULL; + if (!so->handle) { + fprintf(stderr, "fuse: %s\n", dlerror()); + goto err; + } + if (!so->ctr) { + fprintf(stderr, "fuse: %s did not register any modules", + soname); + goto err; + } + return 0; + +err: + if (so->handle) + dlclose(so->handle); + free(so); + return -1; } static int fuse_load_so_module(const char *module) { - int res; - char *soname = malloc(strlen(module) + 64); - if (!soname) { - fprintf(stderr, "fuse: memory allocation failed\n"); - return -1; - } - sprintf(soname, "libfusemod_%s.so", module); - res = fuse_load_so_name(soname); - free(soname); - return res; + int res; + char *soname = malloc(strlen(module) + 64); + if (!soname) { + fprintf(stderr, "fuse: memory allocation failed\n"); + return -1; + } + sprintf(soname, "libfusemod_%s.so", module); + res = fuse_load_so_name(soname); + free(soname); + return res; } static struct fuse_module *fuse_find_module(const char *module) { - struct fuse_module *m; - for (m = fuse_modules; m; m = m->next) { - if (strcmp(module, m->name) == 0) { - m->ctr++; - break; - } - } - return m; + struct fuse_module *m; + for (m = fuse_modules; m; m = m->next) { + if (strcmp(module, m->name) == 0) { + m->ctr++; + break; + } + } + return m; } static struct fuse_module *fuse_get_module(const char *module) { - struct fuse_module *m; + struct fuse_module *m; - pthread_mutex_lock(&fuse_context_lock); - m = fuse_find_module(module); - if (!m) { - int err = fuse_load_so_module(module); - if (!err) - m = fuse_find_module(module); - } - pthread_mutex_unlock(&fuse_context_lock); - return m; + pthread_mutex_lock(&fuse_context_lock); + m = fuse_find_module(module); + if (!m) { + int err = fuse_load_so_module(module); + if (!err) + m = fuse_find_module(module); + } + pthread_mutex_unlock(&fuse_context_lock); + return m; } static void fuse_put_module(struct fuse_module *m) { - pthread_mutex_lock(&fuse_context_lock); - assert(m->ctr > 0); - m->ctr--; - if (!m->ctr && m->so) { - struct fusemod_so *so = m->so; - assert(so->ctr > 0); - so->ctr--; - if (!so->ctr) { - struct fuse_module **mp; - for (mp = &fuse_modules; *mp;) { - if ((*mp)->so == so) - *mp = (*mp)->next; - else - mp = &(*mp)->next; - } - dlclose(so->handle); - free(so); - } - } - pthread_mutex_unlock(&fuse_context_lock); + pthread_mutex_lock(&fuse_context_lock); + assert(m->ctr > 0); + m->ctr--; + if (!m->ctr && m->so) { + struct fusemod_so *so = m->so; + assert(so->ctr > 0); + so->ctr--; + if (!so->ctr) { + struct fuse_module **mp; + for (mp = &fuse_modules; *mp;) { + if ((*mp)->so == so) + *mp = (*mp)->next; + else + mp = &(*mp)->next; + } + dlclose(so->handle); + free(so); + } + } + pthread_mutex_unlock(&fuse_context_lock); } static struct node *get_node_nocheck(struct fuse *f, fuse_ino_t nodeid) { - size_t hash = nodeid % f->id_table_size; - struct node *node; + size_t hash = nodeid % f->id_table_size; + struct node *node; - for (node = f->id_table[hash]; node != NULL; node = node->id_next) - if (node->nodeid == nodeid) - return node; + for (node = f->id_table[hash]; node != NULL; node = node->id_next) + if (node->nodeid == nodeid) + return node; - return NULL; + return NULL; } static struct node *get_node(struct fuse *f, fuse_ino_t nodeid) { - struct node *node = get_node_nocheck(f, nodeid); - if (!node) { - fprintf(stderr, "fuse internal error: node %llu not found\n", - (unsigned long long) nodeid); - abort(); - } - return node; + struct node *node = get_node_nocheck(f, nodeid); + if (!node) { + fprintf(stderr, "fuse internal error: node %llu not found\n", + (unsigned long long) nodeid); + abort(); + } + return node; } static void free_node(struct node *node) { - free(node->name); - free(node); + free(node->name); + free(node); } static void unhash_id(struct fuse *f, struct node *node) { - size_t hash = node->nodeid % f->id_table_size; - struct node **nodep = &f->id_table[hash]; + size_t hash = node->nodeid % f->id_table_size; + struct node **nodep = &f->id_table[hash]; - for (; *nodep != NULL; nodep = &(*nodep)->id_next) - if (*nodep == node) { - *nodep = node->id_next; - return; - } + for (; *nodep != NULL; nodep = &(*nodep)->id_next) + if (*nodep == node) { + *nodep = node->id_next; + return; + } } static void hash_id(struct fuse *f, struct node *node) { - size_t hash = node->nodeid % f->id_table_size; - node->id_next = f->id_table[hash]; - f->id_table[hash] = node; + size_t hash = node->nodeid % f->id_table_size; + node->id_next = f->id_table[hash]; + f->id_table[hash] = node; } static unsigned int name_hash(struct fuse *f, fuse_ino_t parent, - const char *name) + const char *name) { - unsigned int hash = *name; + unsigned int hash = *name; - if (hash) - for (name += 1; *name != '\0'; name++) - hash = (hash << 5) - hash + *name; + if (hash) + for (name += 1; *name != '\0'; name++) + hash = (hash << 5) - hash + *name; - return (hash + parent) % f->name_table_size; + return (hash + parent) % f->name_table_size; } static void unref_node(struct fuse *f, struct node *node); static void unhash_name(struct fuse *f, struct node *node) { - if (node->name) { - size_t hash = name_hash(f, node->parent->nodeid, node->name); - struct node **nodep = &f->name_table[hash]; - - for (; *nodep != NULL; nodep = &(*nodep)->name_next) - if (*nodep == node) { - *nodep = node->name_next; - node->name_next = NULL; - unref_node(f, node->parent); - free(node->name); - node->name = NULL; - node->parent = NULL; - return; - } - fprintf(stderr, "fuse internal error: unable to unhash node: %llu\n", - (unsigned long long) node->nodeid); - abort(); - } + if (node->name) { + size_t hash = name_hash(f, node->parent->nodeid, node->name); + struct node **nodep = &f->name_table[hash]; + + for (; *nodep != NULL; nodep = &(*nodep)->name_next) + if (*nodep == node) { + *nodep = node->name_next; + node->name_next = NULL; + unref_node(f, node->parent); + free(node->name); + node->name = NULL; + node->parent = NULL; + return; + } + fprintf(stderr, + "fuse internal error: unable to unhash node: %llu\n", + (unsigned long long) node->nodeid); + abort(); + } } static int hash_name(struct fuse *f, struct node *node, fuse_ino_t parentid, - const char *name) + const char *name) { - size_t hash = name_hash(f, parentid, name); - struct node *parent = get_node(f, parentid); - node->name = strdup(name); - if (node->name == NULL) - return -1; + size_t hash = name_hash(f, parentid, name); + struct node *parent = get_node(f, parentid); + node->name = strdup(name); + if (node->name == NULL) + return -1; - parent->refctr ++; - node->parent = parent; - node->name_next = f->name_table[hash]; - f->name_table[hash] = node; - return 0; + parent->refctr ++; + node->parent = parent; + node->name_next = f->name_table[hash]; + f->name_table[hash] = node; + return 0; } static void delete_node(struct fuse *f, struct node *node) { - if (f->conf.debug) - fprintf(stderr, "delete: %llu\n", (unsigned long long) node->nodeid); + if (f->conf.debug) + fprintf(stderr, "delete: %llu\n", + (unsigned long long) node->nodeid); - assert(!node->name); - unhash_id(f, node); - free_node(node); + assert(!node->name); + unhash_id(f, node); + free_node(node); } static void unref_node(struct fuse *f, struct node *node) { - assert(node->refctr > 0); - node->refctr --; - if (!node->refctr) - delete_node(f, node); + assert(node->refctr > 0); + node->refctr --; + if (!node->refctr) + delete_node(f, node); } static fuse_ino_t next_id(struct fuse *f) { - do { - f->ctr = (f->ctr + 1) & 0xffffffff; - if (!f->ctr) - f->generation ++; - } while (f->ctr == 0 || f->ctr == FUSE_UNKNOWN_INO || - get_node_nocheck(f, f->ctr) != NULL); - return f->ctr; + do { + f->ctr = (f->ctr + 1) & 0xffffffff; + if (!f->ctr) + f->generation ++; + } while (f->ctr == 0 || f->ctr == FUSE_UNKNOWN_INO || + get_node_nocheck(f, f->ctr) != NULL); + return f->ctr; } static struct node *lookup_node(struct fuse *f, fuse_ino_t parent, - const char *name) + const char *name) { - size_t hash = name_hash(f, parent, name); - struct node *node; + size_t hash = name_hash(f, parent, name); + struct node *node; - for (node = f->name_table[hash]; node != NULL; node = node->name_next) - if (node->parent->nodeid == parent && strcmp(node->name, name) == 0) - return node; + for (node = f->name_table[hash]; node != NULL; node = node->name_next) + if (node->parent->nodeid == parent && + strcmp(node->name, name) == 0) + return node; - return NULL; + return NULL; } static struct node *find_node(struct fuse *f, fuse_ino_t parent, - const char *name) -{ - struct node *node; - - pthread_mutex_lock(&f->lock); - node = lookup_node(f, parent, name); - if (node == NULL) { - node = (struct node *) calloc(1, sizeof(struct node)); - if (node == NULL) - goto out_err; - - node->refctr = 1; - node->nodeid = next_id(f); - node->open_count = 0; - node->is_hidden = 0; - node->generation = f->generation; - if (hash_name(f, node, parent, name) == -1) { - free(node); - node = NULL; - goto out_err; - } - hash_id(f, node); - } - node->nlookup ++; - out_err: - pthread_mutex_unlock(&f->lock); - return node; + const char *name) +{ + struct node *node; + + pthread_mutex_lock(&f->lock); + node = lookup_node(f, parent, name); + if (node == NULL) { + node = (struct node *) calloc(1, sizeof(struct node)); + if (node == NULL) + goto out_err; + + node->refctr = 1; + node->nodeid = next_id(f); + node->open_count = 0; + node->is_hidden = 0; + node->generation = f->generation; + if (hash_name(f, node, parent, name) == -1) { + free(node); + node = NULL; + goto out_err; + } + hash_id(f, node); + } + node->nlookup ++; +out_err: + pthread_mutex_unlock(&f->lock); + return node; } static char *add_name(char *buf, char *s, const char *name) { - size_t len = strlen(name); - s -= len; - if (s <= buf) { - fprintf(stderr, "fuse: path too long: ...%s\n", s + len); - return NULL; - } - strncpy(s, name, len); - s--; - *s = '/'; + size_t len = strlen(name); + s -= len; + if (s <= buf) { + fprintf(stderr, "fuse: path too long: ...%s\n", s + len); + return NULL; + } + strncpy(s, name, len); + s--; + *s = '/'; - return s; + return s; } static char *get_path_name(struct fuse *f, fuse_ino_t nodeid, const char *name) { - char buf[FUSE_MAX_PATH]; - char *s = buf + FUSE_MAX_PATH - 1; - struct node *node; + char buf[FUSE_MAX_PATH]; + char *s = buf + FUSE_MAX_PATH - 1; + struct node *node; - *s = '\0'; + *s = '\0'; - if (name != NULL) { - s = add_name(buf, s, name); - if (s == NULL) - return NULL; - } + if (name != NULL) { + s = add_name(buf, s, name); + if (s == NULL) + return NULL; + } - pthread_mutex_lock(&f->lock); - for (node = get_node(f, nodeid); node && node->nodeid != FUSE_ROOT_ID; - node = node->parent) { - if (node->name == NULL) { - s = NULL; - break; - } + pthread_mutex_lock(&f->lock); + for (node = get_node(f, nodeid); node && node->nodeid != FUSE_ROOT_ID; + node = node->parent) { + if (node->name == NULL) { + s = NULL; + break; + } - s = add_name(buf, s, node->name); - if (s == NULL) - break; - } - pthread_mutex_unlock(&f->lock); + s = add_name(buf, s, node->name); + if (s == NULL) + break; + } + pthread_mutex_unlock(&f->lock); - if (node == NULL || s == NULL) - return NULL; - else if (*s == '\0') - return strdup("/"); - else - return strdup(s); + if (node == NULL || s == NULL) + return NULL; + else if (*s == '\0') + return strdup("/"); + else + return strdup(s); } static char *get_path(struct fuse *f, fuse_ino_t nodeid) { - return get_path_name(f, nodeid, NULL); + return get_path_name(f, nodeid, NULL); } static void forget_node(struct fuse *f, fuse_ino_t nodeid, uint64_t nlookup) { - struct node *node; - if (nodeid == FUSE_ROOT_ID) - return; - pthread_mutex_lock(&f->lock); - node = get_node(f, nodeid); - assert(node->nlookup >= nlookup); - node->nlookup -= nlookup; - if (!node->nlookup) { - unhash_name(f, node); - unref_node(f, node); - } - pthread_mutex_unlock(&f->lock); + struct node *node; + if (nodeid == FUSE_ROOT_ID) + return; + pthread_mutex_lock(&f->lock); + node = get_node(f, nodeid); + assert(node->nlookup >= nlookup); + node->nlookup -= nlookup; + if (!node->nlookup) { + unhash_name(f, node); + unref_node(f, node); + } + pthread_mutex_unlock(&f->lock); } static void remove_node(struct fuse *f, fuse_ino_t dir, const char *name) { - struct node *node; + struct node *node; - pthread_mutex_lock(&f->lock); - node = lookup_node(f, dir, name); - if (node != NULL) - unhash_name(f, node); - pthread_mutex_unlock(&f->lock); + pthread_mutex_lock(&f->lock); + node = lookup_node(f, dir, name); + if (node != NULL) + unhash_name(f, node); + pthread_mutex_unlock(&f->lock); } static int rename_node(struct fuse *f, fuse_ino_t olddir, const char *oldname, - fuse_ino_t newdir, const char *newname, int hide) -{ - struct node *node; - struct node *newnode; - int err = 0; - - pthread_mutex_lock(&f->lock); - node = lookup_node(f, olddir, oldname); - newnode = lookup_node(f, newdir, newname); - if (node == NULL) - goto out; - - if (newnode != NULL) { - if (hide) { - fprintf(stderr, "fuse: hidden file got created during hiding\n"); - err = -EBUSY; - goto out; - } - unhash_name(f, newnode); - } - - unhash_name(f, node); - if (hash_name(f, node, newdir, newname) == -1) { - err = -ENOMEM; - goto out; - } - - if (hide) - node->is_hidden = 1; + fuse_ino_t newdir, const char *newname, int hide) +{ + struct node *node; + struct node *newnode; + int err = 0; + + pthread_mutex_lock(&f->lock); + node = lookup_node(f, olddir, oldname); + newnode = lookup_node(f, newdir, newname); + if (node == NULL) + goto out; + + if (newnode != NULL) { + if (hide) { + fprintf(stderr, "fuse: hidden file got created during hiding\n"); + err = -EBUSY; + goto out; + } + unhash_name(f, newnode); + } + + unhash_name(f, node); + if (hash_name(f, node, newdir, newname) == -1) { + err = -ENOMEM; + goto out; + } + + if (hide) + node->is_hidden = 1; - out: - pthread_mutex_unlock(&f->lock); - return err; +out: + pthread_mutex_unlock(&f->lock); + return err; } static void set_stat(struct fuse *f, fuse_ino_t nodeid, struct stat *stbuf) { - if (!f->conf.use_ino) - stbuf->st_ino = nodeid; - if (f->conf.set_mode) - stbuf->st_mode = (stbuf->st_mode & S_IFMT) | (0777 & ~f->conf.umask); - if (f->conf.set_uid) - stbuf->st_uid = f->conf.uid; - if (f->conf.set_gid) - stbuf->st_gid = f->conf.gid; + if (!f->conf.use_ino) + stbuf->st_ino = nodeid; + if (f->conf.set_mode) + stbuf->st_mode = (stbuf->st_mode & S_IFMT) | + (0777 & ~f->conf.umask); + if (f->conf.set_uid) + stbuf->st_uid = f->conf.uid; + if (f->conf.set_gid) + stbuf->st_gid = f->conf.gid; } static struct fuse *req_fuse(fuse_req_t req) { - return (struct fuse *) fuse_req_userdata(req); + return (struct fuse *) fuse_req_userdata(req); } static void fuse_intr_sighandler(int sig) { - (void) sig; - /* Nothing to do */ + (void) sig; + /* Nothing to do */ } struct fuse_intr_data { - pthread_t id; - pthread_cond_t cond; - int finished; + pthread_t id; + pthread_cond_t cond; + int finished; }; static void fuse_interrupt(fuse_req_t req, void *d_) { - struct fuse_intr_data *d = d_; - struct fuse *f = req_fuse(req); + struct fuse_intr_data *d = d_; + struct fuse *f = req_fuse(req); - if (d->id == pthread_self()) - return; + if (d->id == pthread_self()) + return; - pthread_mutex_lock(&f->lock); - while (!d->finished) { - struct timeval now; - struct timespec timeout; + pthread_mutex_lock(&f->lock); + while (!d->finished) { + struct timeval now; + struct timespec timeout; - pthread_kill(d->id, f->conf.intr_signal); - gettimeofday(&now, NULL); - timeout.tv_sec = now.tv_sec + 1; - timeout.tv_nsec = now.tv_usec * 1000; - pthread_cond_timedwait(&d->cond, &f->lock, &timeout); - } - pthread_mutex_unlock(&f->lock); + pthread_kill(d->id, f->conf.intr_signal); + gettimeofday(&now, NULL); + timeout.tv_sec = now.tv_sec + 1; + timeout.tv_nsec = now.tv_usec * 1000; + pthread_cond_timedwait(&d->cond, &f->lock, &timeout); + } + pthread_mutex_unlock(&f->lock); } static void fuse_do_finish_interrupt(struct fuse *f, fuse_req_t req, - struct fuse_intr_data *d) + struct fuse_intr_data *d) { - pthread_mutex_lock(&f->lock); - d->finished = 1; - pthread_cond_broadcast(&d->cond); - pthread_mutex_unlock(&f->lock); - fuse_req_interrupt_func(req, NULL, NULL); - pthread_cond_destroy(&d->cond); + pthread_mutex_lock(&f->lock); + d->finished = 1; + pthread_cond_broadcast(&d->cond); + pthread_mutex_unlock(&f->lock); + fuse_req_interrupt_func(req, NULL, NULL); + pthread_cond_destroy(&d->cond); } static void fuse_do_prepare_interrupt(fuse_req_t req, struct fuse_intr_data *d) { - d->id = pthread_self(); - pthread_cond_init(&d->cond, NULL); - d->finished = 0; - fuse_req_interrupt_func(req, fuse_interrupt, d); + d->id = pthread_self(); + pthread_cond_init(&d->cond, NULL); + d->finished = 0; + fuse_req_interrupt_func(req, fuse_interrupt, d); } static inline void fuse_finish_interrupt(struct fuse *f, fuse_req_t req, - struct fuse_intr_data *d) + struct fuse_intr_data *d) { - if (f->conf.intr) - fuse_do_finish_interrupt(f, req, d); + if (f->conf.intr) + fuse_do_finish_interrupt(f, req, d); } static inline void fuse_prepare_interrupt(struct fuse *f, fuse_req_t req, - struct fuse_intr_data *d) + struct fuse_intr_data *d) { - if (f->conf.intr) - fuse_do_prepare_interrupt(req, d); + if (f->conf.intr) + fuse_do_prepare_interrupt(req, d); } #ifndef __FreeBSD__ static int fuse_compat_open(struct fuse_fs *fs, const char *path, - struct fuse_file_info *fi) -{ - int err; - if (!fs->compat || fs->compat >= 25) - err = fs->op.open(path, fi); - else if (fs->compat == 22) { - struct fuse_file_info_compat tmp; - memcpy(&tmp, fi, sizeof(tmp)); - err = ((struct fuse_operations_compat22 *) &fs->op)->open(path, &tmp); - memcpy(fi, &tmp, sizeof(tmp)); - fi->fh = tmp.fh; - } else - err = ((struct fuse_operations_compat2 *) &fs->op) - ->open(path, fi->flags); - return err; + struct fuse_file_info *fi) +{ + int err; + if (!fs->compat || fs->compat >= 25) + err = fs->op.open(path, fi); + else if (fs->compat == 22) { + struct fuse_file_info_compat tmp; + memcpy(&tmp, fi, sizeof(tmp)); + err = ((struct fuse_operations_compat22 *) &fs->op)->open(path, + &tmp); + memcpy(fi, &tmp, sizeof(tmp)); + fi->fh = tmp.fh; + } else + err = ((struct fuse_operations_compat2 *) &fs->op) + ->open(path, fi->flags); + return err; } static int fuse_compat_release(struct fuse_fs *fs, const char *path, - struct fuse_file_info *fi) + struct fuse_file_info *fi) { - if (!fs->compat || fs->compat >= 22) - return fs->op.release(path, fi); - else - return ((struct fuse_operations_compat2 *) &fs->op) - ->release(path, fi->flags); + if (!fs->compat || fs->compat >= 22) + return fs->op.release(path, fi); + else + return ((struct fuse_operations_compat2 *) &fs->op) + ->release(path, fi->flags); } static int fuse_compat_opendir(struct fuse_fs *fs, const char *path, - struct fuse_file_info *fi) -{ - if (!fs->compat || fs->compat >= 25) - return fs->op.opendir(path, fi); - else { - int err; - struct fuse_file_info_compat tmp; - memcpy(&tmp, fi, sizeof(tmp)); - err = ((struct fuse_operations_compat22 *) &fs->op) - ->opendir(path, &tmp); - memcpy(fi, &tmp, sizeof(tmp)); - fi->fh = tmp.fh; - return err; - } + struct fuse_file_info *fi) +{ + if (!fs->compat || fs->compat >= 25) + return fs->op.opendir(path, fi); + else { + int err; + struct fuse_file_info_compat tmp; + memcpy(&tmp, fi, sizeof(tmp)); + err = ((struct fuse_operations_compat22 *) &fs->op) + ->opendir(path, &tmp); + memcpy(fi, &tmp, sizeof(tmp)); + fi->fh = tmp.fh; + return err; + } } static void convert_statfs_compat(struct fuse_statfs_compat1 *compatbuf, - struct statvfs *stbuf) + struct statvfs *stbuf) { - stbuf->f_bsize = compatbuf->block_size; - stbuf->f_blocks = compatbuf->blocks; - stbuf->f_bfree = compatbuf->blocks_free; - stbuf->f_bavail = compatbuf->blocks_free; - stbuf->f_files = compatbuf->files; - stbuf->f_ffree = compatbuf->files_free; - stbuf->f_namemax = compatbuf->namelen; + stbuf->f_bsize = compatbuf->block_size; + stbuf->f_blocks = compatbuf->blocks; + stbuf->f_bfree = compatbuf->blocks_free; + stbuf->f_bavail = compatbuf->blocks_free; + stbuf->f_files = compatbuf->files; + stbuf->f_ffree = compatbuf->files_free; + stbuf->f_namemax = compatbuf->namelen; } static void convert_statfs_old(struct statfs *oldbuf, struct statvfs *stbuf) { - stbuf->f_bsize = oldbuf->f_bsize; - stbuf->f_blocks = oldbuf->f_blocks; - stbuf->f_bfree = oldbuf->f_bfree; - stbuf->f_bavail = oldbuf->f_bavail; - stbuf->f_files = oldbuf->f_files; - stbuf->f_ffree = oldbuf->f_ffree; - stbuf->f_namemax = oldbuf->f_namelen; + stbuf->f_bsize = oldbuf->f_bsize; + stbuf->f_blocks = oldbuf->f_blocks; + stbuf->f_bfree = oldbuf->f_bfree; + stbuf->f_bavail = oldbuf->f_bavail; + stbuf->f_files = oldbuf->f_files; + stbuf->f_ffree = oldbuf->f_ffree; + stbuf->f_namemax = oldbuf->f_namelen; } static int fuse_compat_statfs(struct fuse_fs *fs, const char *path, - struct statvfs *buf) -{ - int err; - - if (!fs->compat || fs->compat >= 25) { - err = fs->op.statfs(fs->compat == 25 ? "/" : path, buf); - } else if (fs->compat > 11) { - struct statfs oldbuf; - err = ((struct fuse_operations_compat22 *) &fs->op) - ->statfs("/", &oldbuf); - if (!err) - convert_statfs_old(&oldbuf, buf); - } else { - struct fuse_statfs_compat1 compatbuf; - memset(&compatbuf, 0, sizeof(struct fuse_statfs_compat1)); - err = ((struct fuse_operations_compat1 *) &fs->op)->statfs(&compatbuf); - if (!err) - convert_statfs_compat(&compatbuf, buf); - } - return err; + struct statvfs *buf) +{ + int err; + + if (!fs->compat || fs->compat >= 25) { + err = fs->op.statfs(fs->compat == 25 ? "/" : path, buf); + } else if (fs->compat > 11) { + struct statfs oldbuf; + err = ((struct fuse_operations_compat22 *) &fs->op) + ->statfs("/", &oldbuf); + if (!err) + convert_statfs_old(&oldbuf, buf); + } else { + struct fuse_statfs_compat1 compatbuf; + memset(&compatbuf, 0, sizeof(struct fuse_statfs_compat1)); + err = ((struct fuse_operations_compat1 *) &fs->op) + ->statfs(&compatbuf); + if (!err) + convert_statfs_compat(&compatbuf, buf); + } + return err; } #else /* __FreeBSD__ */ static inline int fuse_compat_open(struct fuse_fs *fs, char *path, - struct fuse_file_info *fi) + struct fuse_file_info *fi) { - return fs->op.open(path, fi); + return fs->op.open(path, fi); } static inline int fuse_compat_release(struct fuse_fs *fs, const char *path, - struct fuse_file_info *fi) + struct fuse_file_info *fi) { - return fs->op.release(path, fi); + return fs->op.release(path, fi); } static inline int fuse_compat_opendir(struct fuse_fs *fs, const char *path, - struct fuse_file_info *fi) + struct fuse_file_info *fi) { - return fs->op.opendir(path, fi); + return fs->op.opendir(path, fi); } static inline int fuse_compat_statfs(struct fuse_fs *fs, const char *path, - struct statvfs *buf) + struct statvfs *buf) { - return fs->op.statfs(fs->compat == 25 ? "/" : path, buf); + return fs->op.statfs(fs->compat == 25 ? "/" : path, buf); } #endif /* __FreeBSD__ */ int fuse_fs_getattr(struct fuse_fs *fs, const char *path, struct stat *buf) { - fuse_get_context()->private_data = fs->user_data; - if (fs->op.getattr) - return fs->op.getattr(path, buf); - else - return -ENOSYS; + fuse_get_context()->private_data = fs->user_data; + if (fs->op.getattr) + return fs->op.getattr(path, buf); + else + return -ENOSYS; } int fuse_fs_fgetattr(struct fuse_fs *fs, const char *path, struct stat *buf, - struct fuse_file_info *fi) + struct fuse_file_info *fi) { - fuse_get_context()->private_data = fs->user_data; - if (fs->op.fgetattr) - return fs->op.fgetattr(path, buf, fi); - else if (fs->op.getattr) - return fs->op.getattr(path, buf); - else - return -ENOSYS; + fuse_get_context()->private_data = fs->user_data; + if (fs->op.fgetattr) + return fs->op.fgetattr(path, buf, fi); + else if (fs->op.getattr) + return fs->op.getattr(path, buf); + else + return -ENOSYS; } int fuse_fs_rename(struct fuse_fs *fs, const char *oldpath, - const char *newpath) + const char *newpath) { - fuse_get_context()->private_data = fs->user_data; - if (fs->op.rename) - return fs->op.rename(oldpath, newpath); - else - return -ENOSYS; + fuse_get_context()->private_data = fs->user_data; + if (fs->op.rename) + return fs->op.rename(oldpath, newpath); + else + return -ENOSYS; } int fuse_fs_unlink(struct fuse_fs *fs, const char *path) { - fuse_get_context()->private_data = fs->user_data; - if (fs->op.unlink) - return fs->op.unlink(path); - else - return -ENOSYS; + fuse_get_context()->private_data = fs->user_data; + if (fs->op.unlink) + return fs->op.unlink(path); + else + return -ENOSYS; } int fuse_fs_rmdir(struct fuse_fs *fs, const char *path) { - fuse_get_context()->private_data = fs->user_data; - if (fs->op.rmdir) - return fs->op.rmdir(path); - else - return -ENOSYS; + fuse_get_context()->private_data = fs->user_data; + if (fs->op.rmdir) + return fs->op.rmdir(path); + else + return -ENOSYS; } int fuse_fs_symlink(struct fuse_fs *fs, const char *linkname, const char *path) { - fuse_get_context()->private_data = fs->user_data; - if (fs->op.symlink) - return fs->op.symlink(linkname, path); - else - return -ENOSYS; + fuse_get_context()->private_data = fs->user_data; + if (fs->op.symlink) + return fs->op.symlink(linkname, path); + else + return -ENOSYS; } int fuse_fs_link(struct fuse_fs *fs, const char *oldpath, const char *newpath) { - fuse_get_context()->private_data = fs->user_data; - if (fs->op.link) - return fs->op.link(oldpath, newpath); - else - return -ENOSYS; + fuse_get_context()->private_data = fs->user_data; + if (fs->op.link) + return fs->op.link(oldpath, newpath); + else + return -ENOSYS; } -int fuse_fs_release(struct fuse_fs *fs, const char *path, - struct fuse_file_info *fi) +int fuse_fs_release(struct fuse_fs *fs, const char *path, + struct fuse_file_info *fi) { - fuse_get_context()->private_data = fs->user_data; - if (fs->op.release) - return fuse_compat_release(fs, path, fi); - else - return 0; + fuse_get_context()->private_data = fs->user_data; + if (fs->op.release) + return fuse_compat_release(fs, path, fi); + else + return 0; } int fuse_fs_opendir(struct fuse_fs *fs, const char *path, - struct fuse_file_info *fi) + struct fuse_file_info *fi) { - fuse_get_context()->private_data = fs->user_data; - if (fs->op.opendir) - return fuse_compat_opendir(fs, path, fi); - else - return 0; + fuse_get_context()->private_data = fs->user_data; + if (fs->op.opendir) + return fuse_compat_opendir(fs, path, fi); + else + return 0; } int fuse_fs_open(struct fuse_fs *fs, const char *path, - struct fuse_file_info *fi) + struct fuse_file_info *fi) { - fuse_get_context()->private_data = fs->user_data; - if (fs->op.open) - return fuse_compat_open(fs, path, fi); - else - return 0; + fuse_get_context()->private_data = fs->user_data; + if (fs->op.open) + return fuse_compat_open(fs, path, fi); + else + return 0; } int fuse_fs_read(struct fuse_fs *fs, const char *path, char *buf, size_t size, - off_t off, struct fuse_file_info *fi) + off_t off, struct fuse_file_info *fi) { - fuse_get_context()->private_data = fs->user_data; - if (fs->op.read) - return fs->op.read(path, buf, size, off, fi); - else - return -ENOSYS; + fuse_get_context()->private_data = fs->user_data; + if (fs->op.read) + return fs->op.read(path, buf, size, off, fi); + else + return -ENOSYS; } int fuse_fs_write(struct fuse_fs *fs, const char *path, const char *buf, - size_t size, off_t off, struct fuse_file_info *fi) + size_t size, off_t off, struct fuse_file_info *fi) { - fuse_get_context()->private_data = fs->user_data; - if (fs->op.write) - return fs->op.write(path, buf, size, off, fi); - else - return -ENOSYS; + fuse_get_context()->private_data = fs->user_data; + if (fs->op.write) + return fs->op.write(path, buf, size, off, fi); + else + return -ENOSYS; } int fuse_fs_fsync(struct fuse_fs *fs, const char *path, int datasync, - struct fuse_file_info *fi) + struct fuse_file_info *fi) { - fuse_get_context()->private_data = fs->user_data; - if (fs->op.fsync) - return fs->op.fsync(path, datasync, fi); - else - return -ENOSYS; + fuse_get_context()->private_data = fs->user_data; + if (fs->op.fsync) + return fs->op.fsync(path, datasync, fi); + else + return -ENOSYS; } int fuse_fs_fsyncdir(struct fuse_fs *fs, const char *path, int datasync, - struct fuse_file_info *fi) + struct fuse_file_info *fi) { - fuse_get_context()->private_data = fs->user_data; - if (fs->op.fsyncdir) - return fs->op.fsyncdir(path, datasync, fi); - else - return -ENOSYS; + fuse_get_context()->private_data = fs->user_data; + if (fs->op.fsyncdir) + return fs->op.fsyncdir(path, datasync, fi); + else + return -ENOSYS; } int fuse_fs_flush(struct fuse_fs *fs, const char *path, - struct fuse_file_info *fi) + struct fuse_file_info *fi) { - fuse_get_context()->private_data = fs->user_data; - if (fs->op.flush) - return fs->op.flush(path, fi); - else - return -ENOSYS; + fuse_get_context()->private_data = fs->user_data; + if (fs->op.flush) + return fs->op.flush(path, fi); + else + return -ENOSYS; } int fuse_fs_statfs(struct fuse_fs *fs, const char *path, struct statvfs *buf) { - fuse_get_context()->private_data = fs->user_data; - if (fs->op.statfs) - return fuse_compat_statfs(fs, path, buf); - else { - buf->f_namemax = 255; - buf->f_bsize = 512; - return 0; - } + fuse_get_context()->private_data = fs->user_data; + if (fs->op.statfs) + return fuse_compat_statfs(fs, path, buf); + else { + buf->f_namemax = 255; + buf->f_bsize = 512; + return 0; + } } int fuse_fs_releasedir(struct fuse_fs *fs, const char *path, - struct fuse_file_info *fi) + struct fuse_file_info *fi) { - fuse_get_context()->private_data = fs->user_data; - if (fs->op.releasedir) - return fs->op.releasedir(path, fi); - else - return 0; + fuse_get_context()->private_data = fs->user_data; + if (fs->op.releasedir) + return fs->op.releasedir(path, fi); + else + return 0; } static int fill_dir_old(struct fuse_dirhandle *dh, const char *name, int type, - ino_t ino) + ino_t ino) { - int res; - struct stat stbuf; + int res; + struct stat stbuf; - memset(&stbuf, 0, sizeof(stbuf)); - stbuf.st_mode = type << 12; - stbuf.st_ino = ino; + memset(&stbuf, 0, sizeof(stbuf)); + stbuf.st_mode = type << 12; + stbuf.st_ino = ino; - res = dh->filler(dh->buf, name, &stbuf, 0); - return res ? -ENOMEM : 0; + res = dh->filler(dh->buf, name, &stbuf, 0); + return res ? -ENOMEM : 0; } int fuse_fs_readdir(struct fuse_fs *fs, const char *path, void *buf, - fuse_fill_dir_t filler, off_t off, - struct fuse_file_info *fi) + fuse_fill_dir_t filler, off_t off, + struct fuse_file_info *fi) { - fuse_get_context()->private_data = fs->user_data; - if (fs->op.readdir) - return fs->op.readdir(path, buf, filler, off, fi); - else if (fs->op.getdir) { - struct fuse_dirhandle dh; - dh.filler = filler; - dh.buf = buf; - return fs->op.getdir(path, &dh, fill_dir_old); - } else - return -ENOSYS; + fuse_get_context()->private_data = fs->user_data; + if (fs->op.readdir) + return fs->op.readdir(path, buf, filler, off, fi); + else if (fs->op.getdir) { + struct fuse_dirhandle dh; + dh.filler = filler; + dh.buf = buf; + return fs->op.getdir(path, &dh, fill_dir_old); + } else + return -ENOSYS; } int fuse_fs_create(struct fuse_fs *fs, const char *path, mode_t mode, - struct fuse_file_info *fi) + struct fuse_file_info *fi) { - fuse_get_context()->private_data = fs->user_data; - if (fs->op.create) - return fs->op.create(path, mode, fi); - else - return -ENOSYS; + fuse_get_context()->private_data = fs->user_data; + if (fs->op.create) + return fs->op.create(path, mode, fi); + else + return -ENOSYS; } int fuse_fs_lock(struct fuse_fs *fs, const char *path, - struct fuse_file_info *fi, int cmd, struct flock *lock) + struct fuse_file_info *fi, int cmd, struct flock *lock) { - fuse_get_context()->private_data = fs->user_data; - if (fs->op.lock) - return fs->op.lock(path, fi, cmd, lock); - else - return -ENOSYS; + fuse_get_context()->private_data = fs->user_data; + if (fs->op.lock) + return fs->op.lock(path, fi, cmd, lock); + else + return -ENOSYS; } int fuse_fs_chown(struct fuse_fs *fs, const char *path, uid_t uid, gid_t gid) { - fuse_get_context()->private_data = fs->user_data; - if (fs->op.chown) - return fs->op.chown(path, uid, gid); - else - return -ENOSYS; + fuse_get_context()->private_data = fs->user_data; + if (fs->op.chown) + return fs->op.chown(path, uid, gid); + else + return -ENOSYS; } int fuse_fs_truncate(struct fuse_fs *fs, const char *path, off_t size) { - fuse_get_context()->private_data = fs->user_data; - if (fs->op.truncate) - return fs->op.truncate(path, size); - else - return -ENOSYS; + fuse_get_context()->private_data = fs->user_data; + if (fs->op.truncate) + return fs->op.truncate(path, size); + else + return -ENOSYS; } int fuse_fs_ftruncate(struct fuse_fs *fs, const char *path, off_t size, - struct fuse_file_info *fi) + struct fuse_file_info *fi) { - fuse_get_context()->private_data = fs->user_data; - if (fs->op.ftruncate) - return fs->op.ftruncate(path, size, fi); - else if (fs->op.truncate) - return fs->op.truncate(path, size); - else - return -ENOSYS; + fuse_get_context()->private_data = fs->user_data; + if (fs->op.ftruncate) + return fs->op.ftruncate(path, size, fi); + else if (fs->op.truncate) + return fs->op.truncate(path, size); + else + return -ENOSYS; } int fuse_fs_utimens(struct fuse_fs *fs, const char *path, - const struct timespec tv[2]) + const struct timespec tv[2]) { - fuse_get_context()->private_data = fs->user_data; - if (fs->op.utimens) - return fs->op.utimens(path, tv); - else if(fs->op.utime) { - struct utimbuf buf; - buf.actime = tv[0].tv_sec; - buf.modtime = tv[1].tv_sec; - return fs->op.utime(path, &buf); - } else - return -ENOSYS; + fuse_get_context()->private_data = fs->user_data; + if (fs->op.utimens) + return fs->op.utimens(path, tv); + else if(fs->op.utime) { + struct utimbuf buf; + buf.actime = tv[0].tv_sec; + buf.modtime = tv[1].tv_sec; + return fs->op.utime(path, &buf); + } else + return -ENOSYS; } int fuse_fs_access(struct fuse_fs *fs, const char *path, int mask) { - fuse_get_context()->private_data = fs->user_data; - if (fs->op.access) - return fs->op.access(path, mask); - else - return -ENOSYS; + fuse_get_context()->private_data = fs->user_data; + if (fs->op.access) + return fs->op.access(path, mask); + else + return -ENOSYS; } int fuse_fs_readlink(struct fuse_fs *fs, const char *path, char *buf, - size_t len) + size_t len) { - fuse_get_context()->private_data = fs->user_data; - if (fs->op.readlink) - return fs->op.readlink(path, buf, len); - else - return -ENOSYS; + fuse_get_context()->private_data = fs->user_data; + if (fs->op.readlink) + return fs->op.readlink(path, buf, len); + else + return -ENOSYS; } int fuse_fs_mknod(struct fuse_fs *fs, const char *path, mode_t mode, - dev_t rdev) + dev_t rdev) { - fuse_get_context()->private_data = fs->user_data; - if (fs->op.mknod) - return fs->op.mknod(path, mode, rdev); - else - return -ENOSYS; + fuse_get_context()->private_data = fs->user_data; + if (fs->op.mknod) + return fs->op.mknod(path, mode, rdev); + else + return -ENOSYS; } int fuse_fs_mkdir(struct fuse_fs *fs, const char *path, mode_t mode) { - fuse_get_context()->private_data = fs->user_data; - if (fs->op.mkdir) - return fs->op.mkdir(path, mode); - else - return -ENOSYS; + fuse_get_context()->private_data = fs->user_data; + if (fs->op.mkdir) + return fs->op.mkdir(path, mode); + else + return -ENOSYS; } int fuse_fs_setxattr(struct fuse_fs *fs, const char *path, const char *name, - const char *value, size_t size, int flags) + const char *value, size_t size, int flags) { - fuse_get_context()->private_data = fs->user_data; - if (fs->op.setxattr) - return fs->op.setxattr(path, name, value, size, flags); - else - return -ENOSYS; + fuse_get_context()->private_data = fs->user_data; + if (fs->op.setxattr) + return fs->op.setxattr(path, name, value, size, flags); + else + return -ENOSYS; } int fuse_fs_getxattr(struct fuse_fs *fs, const char *path, const char *name, - char *value, size_t size) + char *value, size_t size) { - fuse_get_context()->private_data = fs->user_data; - if (fs->op.getxattr) - return fs->op.getxattr(path, name, value, size); - else - return -ENOSYS; + fuse_get_context()->private_data = fs->user_data; + if (fs->op.getxattr) + return fs->op.getxattr(path, name, value, size); + else + return -ENOSYS; } int fuse_fs_listxattr(struct fuse_fs *fs, const char *path, char *list, - size_t size) + size_t size) { - fuse_get_context()->private_data = fs->user_data; - if (fs->op.listxattr) - return fs->op.listxattr(path, list, size); - else - return -ENOSYS; + fuse_get_context()->private_data = fs->user_data; + if (fs->op.listxattr) + return fs->op.listxattr(path, list, size); + else + return -ENOSYS; } int fuse_fs_bmap(struct fuse_fs *fs, const char *path, size_t blocksize, - uint64_t *idx) + uint64_t *idx) { - fuse_get_context()->private_data = fs->user_data; - if (fs->op.bmap) - return fs->op.bmap(path, blocksize, idx); - else - return -ENOSYS; + fuse_get_context()->private_data = fs->user_data; + if (fs->op.bmap) + return fs->op.bmap(path, blocksize, idx); + else + return -ENOSYS; } int fuse_fs_removexattr(struct fuse_fs *fs, const char *path, const char *name) { - fuse_get_context()->private_data = fs->user_data; - if (fs->op.removexattr) - return fs->op.removexattr(path, name); - else - return -ENOSYS; + fuse_get_context()->private_data = fs->user_data; + if (fs->op.removexattr) + return fs->op.removexattr(path, name); + else + return -ENOSYS; } static int is_open(struct fuse *f, fuse_ino_t dir, const char *name) { - struct node *node; - int isopen = 0; - pthread_mutex_lock(&f->lock); - node = lookup_node(f, dir, name); - if (node && node->open_count > 0) - isopen = 1; - pthread_mutex_unlock(&f->lock); - return isopen; + struct node *node; + int isopen = 0; + pthread_mutex_lock(&f->lock); + node = lookup_node(f, dir, name); + if (node && node->open_count > 0) + isopen = 1; + pthread_mutex_unlock(&f->lock); + return isopen; } static char *hidden_name(struct fuse *f, fuse_ino_t dir, const char *oldname, - char *newname, size_t bufsize) -{ - struct stat buf; - struct node *node; - struct node *newnode; - char *newpath; - int res; - int failctr = 10; - - do { - pthread_mutex_lock(&f->lock); - node = lookup_node(f, dir, oldname); - if (node == NULL) { - pthread_mutex_unlock(&f->lock); - return NULL; - } - do { - f->hidectr ++; - snprintf(newname, bufsize, ".fuse_hidden%08x%08x", - (unsigned int) node->nodeid, f->hidectr); - newnode = lookup_node(f, dir, newname); - } while(newnode); - pthread_mutex_unlock(&f->lock); - - newpath = get_path_name(f, dir, newname); - if (!newpath) - break; - - res = fuse_fs_getattr(f->fs, newpath, &buf); - if (res == -ENOENT) - break; - free(newpath); - newpath = NULL; - } while(res == 0 && --failctr); - - return newpath; + char *newname, size_t bufsize) +{ + struct stat buf; + struct node *node; + struct node *newnode; + char *newpath; + int res; + int failctr = 10; + + do { + pthread_mutex_lock(&f->lock); + node = lookup_node(f, dir, oldname); + if (node == NULL) { + pthread_mutex_unlock(&f->lock); + return NULL; + } + do { + f->hidectr ++; + snprintf(newname, bufsize, ".fuse_hidden%08x%08x", + (unsigned int) node->nodeid, f->hidectr); + newnode = lookup_node(f, dir, newname); + } while(newnode); + pthread_mutex_unlock(&f->lock); + + newpath = get_path_name(f, dir, newname); + if (!newpath) + break; + + res = fuse_fs_getattr(f->fs, newpath, &buf); + if (res == -ENOENT) + break; + free(newpath); + newpath = NULL; + } while(res == 0 && --failctr); + + return newpath; } static int hide_node(struct fuse *f, const char *oldpath, - fuse_ino_t dir, const char *oldname) + fuse_ino_t dir, const char *oldname) { - char newname[64]; - char *newpath; - int err = -EBUSY; + char newname[64]; + char *newpath; + int err = -EBUSY; - newpath = hidden_name(f, dir, oldname, newname, sizeof(newname)); - if (newpath) { - err = fuse_fs_rename(f->fs, oldpath, newpath); - if (!err) - err = rename_node(f, dir, oldname, dir, newname, 1); - free(newpath); - } - return err; + newpath = hidden_name(f, dir, oldname, newname, sizeof(newname)); + if (newpath) { + err = fuse_fs_rename(f->fs, oldpath, newpath); + if (!err) + err = rename_node(f, dir, oldname, dir, newname, 1); + free(newpath); + } + return err; } static int mtime_eq(const struct stat *stbuf, const struct timespec *ts) { - return stbuf->st_mtime == ts->tv_sec && ST_MTIM_NSEC(stbuf) == ts->tv_nsec; + return stbuf->st_mtime == ts->tv_sec && + ST_MTIM_NSEC(stbuf) == ts->tv_nsec; } #ifndef CLOCK_MONOTONIC @@ -1172,2122 +1180,2153 @@ static int mtime_eq(const struct stat *stbuf, const struct timespec *ts) static void curr_time(struct timespec *now) { - static clockid_t clockid = CLOCK_MONOTONIC; - int res = clock_gettime(clockid, now); - if (res == -1 && errno == EINVAL) { - clockid = CLOCK_REALTIME; - res = clock_gettime(clockid, now); - } - if (res == -1) { - perror("fuse: clock_gettime"); - abort(); - } + static clockid_t clockid = CLOCK_MONOTONIC; + int res = clock_gettime(clockid, now); + if (res == -1 && errno == EINVAL) { + clockid = CLOCK_REALTIME; + res = clock_gettime(clockid, now); + } + if (res == -1) { + perror("fuse: clock_gettime"); + abort(); + } } static void update_stat(struct node *node, const struct stat *stbuf) { - if (node->cache_valid && (!mtime_eq(stbuf, &node->mtime) || - stbuf->st_size != node->size)) - node->cache_valid = 0; - node->mtime.tv_sec = stbuf->st_mtime; - node->mtime.tv_nsec = ST_MTIM_NSEC(stbuf); - node->size = stbuf->st_size; - curr_time(&node->stat_updated); + if (node->cache_valid && (!mtime_eq(stbuf, &node->mtime) || + stbuf->st_size != node->size)) + node->cache_valid = 0; + node->mtime.tv_sec = stbuf->st_mtime; + node->mtime.tv_nsec = ST_MTIM_NSEC(stbuf); + node->size = stbuf->st_size; + curr_time(&node->stat_updated); } static int lookup_path(struct fuse *f, fuse_ino_t nodeid, - const char *name, const char *path, - struct fuse_entry_param *e, struct fuse_file_info *fi) -{ - int res; - - memset(e, 0, sizeof(struct fuse_entry_param)); - if (fi) - res = fuse_fs_fgetattr(f->fs, path, &e->attr, fi); - else - res = fuse_fs_getattr(f->fs, path, &e->attr); - if (res == 0) { - struct node *node; - - node = find_node(f, nodeid, name); - if (node == NULL) - res = -ENOMEM; - else { - e->ino = node->nodeid; - e->generation = node->generation; - e->entry_timeout = f->conf.entry_timeout; - e->attr_timeout = f->conf.attr_timeout; - if (f->conf.auto_cache) { - pthread_mutex_lock(&f->lock); - update_stat(node, &e->attr); - pthread_mutex_unlock(&f->lock); - } - set_stat(f, e->ino, &e->attr); - if (f->conf.debug) - fprintf(stderr, " NODEID: %lu\n", (unsigned long) e->ino); - } - } - return res; + const char *name, const char *path, + struct fuse_entry_param *e, struct fuse_file_info *fi) +{ + int res; + + memset(e, 0, sizeof(struct fuse_entry_param)); + if (fi) + res = fuse_fs_fgetattr(f->fs, path, &e->attr, fi); + else + res = fuse_fs_getattr(f->fs, path, &e->attr); + if (res == 0) { + struct node *node; + + node = find_node(f, nodeid, name); + if (node == NULL) + res = -ENOMEM; + else { + e->ino = node->nodeid; + e->generation = node->generation; + e->entry_timeout = f->conf.entry_timeout; + e->attr_timeout = f->conf.attr_timeout; + if (f->conf.auto_cache) { + pthread_mutex_lock(&f->lock); + update_stat(node, &e->attr); + pthread_mutex_unlock(&f->lock); + } + set_stat(f, e->ino, &e->attr); + if (f->conf.debug) + fprintf(stderr, " NODEID: %lu\n", + (unsigned long) e->ino); + } + } + return res; } static struct fuse_context_i *fuse_get_context_internal(void) { - struct fuse_context_i *c; - - c = (struct fuse_context_i *) pthread_getspecific(fuse_context_key); - if (c == NULL) { - c = (struct fuse_context_i *) malloc(sizeof(struct fuse_context_i)); - if (c == NULL) { - /* This is hard to deal with properly, so just abort. If - memory is so low that the context cannot be allocated, - there's not much hope for the filesystem anyway */ - fprintf(stderr, "fuse: failed to allocate thread specific data\n"); - abort(); - } - pthread_setspecific(fuse_context_key, c); - } - return c; + struct fuse_context_i *c; + + c = (struct fuse_context_i *) pthread_getspecific(fuse_context_key); + if (c == NULL) { + c = (struct fuse_context_i *) + malloc(sizeof(struct fuse_context_i)); + if (c == NULL) { + /* This is hard to deal with properly, so just + abort. If memory is so low that the + context cannot be allocated, there's not + much hope for the filesystem anyway */ + fprintf(stderr, "fuse: failed to allocate thread specific data\n"); + abort(); + } + pthread_setspecific(fuse_context_key, c); + } + return c; } static void fuse_freecontext(void *data) { - free(data); + free(data); } static int fuse_create_context_key(void) { - int err = 0; - pthread_mutex_lock(&fuse_context_lock); - if (!fuse_context_ref) { - err = pthread_key_create(&fuse_context_key, fuse_freecontext); - if (err) { - fprintf(stderr, "fuse: failed to create thread specific key: %s\n", - strerror(err)); - pthread_mutex_unlock(&fuse_context_lock); - return -1; - } - } - fuse_context_ref++; - pthread_mutex_unlock(&fuse_context_lock); - return 0; + int err = 0; + pthread_mutex_lock(&fuse_context_lock); + if (!fuse_context_ref) { + err = pthread_key_create(&fuse_context_key, fuse_freecontext); + if (err) { + fprintf(stderr, "fuse: failed to create thread specific key: %s\n", + strerror(err)); + pthread_mutex_unlock(&fuse_context_lock); + return -1; + } + } + fuse_context_ref++; + pthread_mutex_unlock(&fuse_context_lock); + return 0; } static void fuse_delete_context_key(void) { - pthread_mutex_lock(&fuse_context_lock); - fuse_context_ref--; - if (!fuse_context_ref) { - free(pthread_getspecific(fuse_context_key)); - pthread_key_delete(fuse_context_key); - } - pthread_mutex_unlock(&fuse_context_lock); + pthread_mutex_lock(&fuse_context_lock); + fuse_context_ref--; + if (!fuse_context_ref) { + free(pthread_getspecific(fuse_context_key)); + pthread_key_delete(fuse_context_key); + } + pthread_mutex_unlock(&fuse_context_lock); } static struct fuse *req_fuse_prepare(fuse_req_t req) { - struct fuse_context_i *c = fuse_get_context_internal(); - const struct fuse_ctx *ctx = fuse_req_ctx(req); - c->req = req; - c->ctx.fuse = req_fuse(req); - c->ctx.uid = ctx->uid; - c->ctx.gid = ctx->gid; - c->ctx.pid = ctx->pid; - return c->ctx.fuse; + struct fuse_context_i *c = fuse_get_context_internal(); + const struct fuse_ctx *ctx = fuse_req_ctx(req); + c->req = req; + c->ctx.fuse = req_fuse(req); + c->ctx.uid = ctx->uid; + c->ctx.gid = ctx->gid; + c->ctx.pid = ctx->pid; + return c->ctx.fuse; } static inline void reply_err(fuse_req_t req, int err) { - /* fuse_reply_err() uses non-negated errno values */ - fuse_reply_err(req, -err); + /* fuse_reply_err() uses non-negated errno values */ + fuse_reply_err(req, -err); } static void reply_entry(fuse_req_t req, const struct fuse_entry_param *e, - int err) + int err) { - if (!err) { - struct fuse *f = req_fuse(req); - if (fuse_reply_entry(req, e) == -ENOENT) - forget_node(f, e->ino, 1); - } else - reply_err(req, err); + if (!err) { + struct fuse *f = req_fuse(req); + if (fuse_reply_entry(req, e) == -ENOENT) + forget_node(f, e->ino, 1); + } else + reply_err(req, err); } void fuse_fs_init(struct fuse_fs *fs, struct fuse_conn_info *conn) { - fuse_get_context()->private_data = fs->user_data; - if (fs->op.init) - fs->user_data = fs->op.init(conn); + fuse_get_context()->private_data = fs->user_data; + if (fs->op.init) + fs->user_data = fs->op.init(conn); } static void fuse_lib_init(void *data, struct fuse_conn_info *conn) { - struct fuse *f = (struct fuse *) data; - struct fuse_context_i *c = fuse_get_context_internal(); + struct fuse *f = (struct fuse *) data; + struct fuse_context_i *c = fuse_get_context_internal(); - memset(c, 0, sizeof(*c)); - c->ctx.fuse = f; - fuse_fs_init(f->fs, conn); + memset(c, 0, sizeof(*c)); + c->ctx.fuse = f; + fuse_fs_init(f->fs, conn); } void fuse_fs_destroy(struct fuse_fs *fs) { - fuse_get_context()->private_data = fs->user_data; - if (fs->op.destroy) - fs->op.destroy(fs->user_data); - if (fs->m) - fuse_put_module(fs->m); - free(fs); + fuse_get_context()->private_data = fs->user_data; + if (fs->op.destroy) + fs->op.destroy(fs->user_data); + if (fs->m) + fuse_put_module(fs->m); + free(fs); } static void fuse_lib_destroy(void *data) { - struct fuse *f = (struct fuse *) data; - struct fuse_context_i *c = fuse_get_context_internal(); + struct fuse *f = (struct fuse *) data; + struct fuse_context_i *c = fuse_get_context_internal(); - memset(c, 0, sizeof(*c)); - c->ctx.fuse = f; - fuse_fs_destroy(f->fs); - f->fs = NULL; + memset(c, 0, sizeof(*c)); + c->ctx.fuse = f; + fuse_fs_destroy(f->fs); + f->fs = NULL; } static void fuse_lib_lookup(fuse_req_t req, fuse_ino_t parent, - const char *name) -{ - struct fuse *f = req_fuse_prepare(req); - struct fuse_entry_param e; - char *path; - int err; - - err = -ENOENT; - pthread_rwlock_rdlock(&f->tree_lock); - path = get_path_name(f, parent, name); - if (path != NULL) { - struct fuse_intr_data d; - if (f->conf.debug) - fprintf(stderr, "LOOKUP %s\n", path); - fuse_prepare_interrupt(f, req, &d); - err = lookup_path(f, parent, name, path, &e, NULL); - if (err == -ENOENT && f->conf.negative_timeout != 0.0) { - e.ino = 0; - e.entry_timeout = f->conf.negative_timeout; - err = 0; - } - fuse_finish_interrupt(f, req, &d); - free(path); - } - pthread_rwlock_unlock(&f->tree_lock); - reply_entry(req, &e, err); + const char *name) +{ + struct fuse *f = req_fuse_prepare(req); + struct fuse_entry_param e; + char *path; + int err; + + err = -ENOENT; + pthread_rwlock_rdlock(&f->tree_lock); + path = get_path_name(f, parent, name); + if (path != NULL) { + struct fuse_intr_data d; + if (f->conf.debug) + fprintf(stderr, "LOOKUP %s\n", path); + fuse_prepare_interrupt(f, req, &d); + err = lookup_path(f, parent, name, path, &e, NULL); + if (err == -ENOENT && f->conf.negative_timeout != 0.0) { + e.ino = 0; + e.entry_timeout = f->conf.negative_timeout; + err = 0; + } + fuse_finish_interrupt(f, req, &d); + free(path); + } + pthread_rwlock_unlock(&f->tree_lock); + reply_entry(req, &e, err); } static void fuse_lib_forget(fuse_req_t req, fuse_ino_t ino, - unsigned long nlookup) + unsigned long nlookup) { - struct fuse *f = req_fuse(req); - if (f->conf.debug) - fprintf(stderr, "FORGET %llu/%lu\n", (unsigned long long)ino, nlookup); - forget_node(f, ino, nlookup); - fuse_reply_none(req); + struct fuse *f = req_fuse(req); + if (f->conf.debug) + fprintf(stderr, "FORGET %llu/%lu\n", (unsigned long long)ino, + nlookup); + forget_node(f, ino, nlookup); + fuse_reply_none(req); } static void fuse_lib_getattr(fuse_req_t req, fuse_ino_t ino, - struct fuse_file_info *fi) -{ - struct fuse *f = req_fuse_prepare(req); - struct stat buf; - char *path; - int err; - - (void) fi; - memset(&buf, 0, sizeof(buf)); - - err = -ENOENT; - pthread_rwlock_rdlock(&f->tree_lock); - path = get_path(f, ino); - if (path != NULL) { - struct fuse_intr_data d; - fuse_prepare_interrupt(f, req, &d); - err = fuse_fs_getattr(f->fs, path, &buf); - fuse_finish_interrupt(f, req, &d); - free(path); - } - pthread_rwlock_unlock(&f->tree_lock); - if (!err) { - if (f->conf.auto_cache) { - pthread_mutex_lock(&f->lock); - update_stat(get_node(f, ino), &buf); - pthread_mutex_unlock(&f->lock); - } - set_stat(f, ino, &buf); - fuse_reply_attr(req, &buf, f->conf.attr_timeout); - } else - reply_err(req, err); + struct fuse_file_info *fi) +{ + struct fuse *f = req_fuse_prepare(req); + struct stat buf; + char *path; + int err; + + (void) fi; + memset(&buf, 0, sizeof(buf)); + + err = -ENOENT; + pthread_rwlock_rdlock(&f->tree_lock); + path = get_path(f, ino); + if (path != NULL) { + struct fuse_intr_data d; + fuse_prepare_interrupt(f, req, &d); + err = fuse_fs_getattr(f->fs, path, &buf); + fuse_finish_interrupt(f, req, &d); + free(path); + } + pthread_rwlock_unlock(&f->tree_lock); + if (!err) { + if (f->conf.auto_cache) { + pthread_mutex_lock(&f->lock); + update_stat(get_node(f, ino), &buf); + pthread_mutex_unlock(&f->lock); + } + set_stat(f, ino, &buf); + fuse_reply_attr(req, &buf, f->conf.attr_timeout); + } else + reply_err(req, err); } int fuse_fs_chmod(struct fuse_fs *fs, const char *path, mode_t mode) { - fuse_get_context()->private_data = fs->user_data; - if (fs->op.chmod) - return fs->op.chmod(path, mode); - else - return -ENOSYS; + fuse_get_context()->private_data = fs->user_data; + if (fs->op.chmod) + return fs->op.chmod(path, mode); + else + return -ENOSYS; } static void fuse_lib_setattr(fuse_req_t req, fuse_ino_t ino, struct stat *attr, - int valid, struct fuse_file_info *fi) -{ - struct fuse *f = req_fuse_prepare(req); - struct stat buf; - char *path; - int err; - - err = -ENOENT; - pthread_rwlock_rdlock(&f->tree_lock); - path = get_path(f, ino); - if (path != NULL) { - struct fuse_intr_data d; - fuse_prepare_interrupt(f, req, &d); - err = 0; - if (!err && (valid & FUSE_SET_ATTR_MODE)) - err = fuse_fs_chmod(f->fs, path, attr->st_mode); - if (!err && (valid & (FUSE_SET_ATTR_UID | FUSE_SET_ATTR_GID))) { - uid_t uid = - (valid & FUSE_SET_ATTR_UID) ? attr->st_uid : (uid_t) -1; - gid_t gid = - (valid & FUSE_SET_ATTR_GID) ? attr->st_gid : (gid_t) -1; - err = fuse_fs_chown(f->fs, path, uid, gid); - } - if (!err && (valid & FUSE_SET_ATTR_SIZE)) { - if (fi) - err = fuse_fs_ftruncate(f->fs, path, attr->st_size, fi); - else - err = fuse_fs_truncate(f->fs, path, attr->st_size); - } - if (!err && (valid & (FUSE_SET_ATTR_ATIME | FUSE_SET_ATTR_MTIME)) == - (FUSE_SET_ATTR_ATIME | FUSE_SET_ATTR_MTIME)) { - struct timespec tv[2]; - tv[0].tv_sec = attr->st_atime; - tv[0].tv_nsec = ST_ATIM_NSEC(attr); - tv[1].tv_sec = attr->st_mtime; - tv[1].tv_nsec = ST_MTIM_NSEC(attr); - err = fuse_fs_utimens(f->fs, path, tv); - } - if (!err) - err = fuse_fs_getattr(f->fs, path, &buf); - fuse_finish_interrupt(f, req, &d); - free(path); - } - pthread_rwlock_unlock(&f->tree_lock); - if (!err) { - if (f->conf.auto_cache) { - pthread_mutex_lock(&f->lock); - update_stat(get_node(f, ino), &buf); - pthread_mutex_unlock(&f->lock); - } - set_stat(f, ino, &buf); - fuse_reply_attr(req, &buf, f->conf.attr_timeout); - } else - reply_err(req, err); + int valid, struct fuse_file_info *fi) +{ + struct fuse *f = req_fuse_prepare(req); + struct stat buf; + char *path; + int err; + + err = -ENOENT; + pthread_rwlock_rdlock(&f->tree_lock); + path = get_path(f, ino); + if (path != NULL) { + struct fuse_intr_data d; + fuse_prepare_interrupt(f, req, &d); + err = 0; + if (!err && (valid & FUSE_SET_ATTR_MODE)) + err = fuse_fs_chmod(f->fs, path, attr->st_mode); + if (!err && (valid & (FUSE_SET_ATTR_UID | FUSE_SET_ATTR_GID))) { + uid_t uid = (valid & FUSE_SET_ATTR_UID) ? + attr->st_uid : (uid_t) -1; + gid_t gid = (valid & FUSE_SET_ATTR_GID) ? + attr->st_gid : (gid_t) -1; + err = fuse_fs_chown(f->fs, path, uid, gid); + } + if (!err && (valid & FUSE_SET_ATTR_SIZE)) { + if (fi) + err = fuse_fs_ftruncate(f->fs, path, + attr->st_size, fi); + else + err = fuse_fs_truncate(f->fs, path, + attr->st_size); + } + if (!err && + (valid & (FUSE_SET_ATTR_ATIME | FUSE_SET_ATTR_MTIME)) == + (FUSE_SET_ATTR_ATIME | FUSE_SET_ATTR_MTIME)) { + struct timespec tv[2]; + tv[0].tv_sec = attr->st_atime; + tv[0].tv_nsec = ST_ATIM_NSEC(attr); + tv[1].tv_sec = attr->st_mtime; + tv[1].tv_nsec = ST_MTIM_NSEC(attr); + err = fuse_fs_utimens(f->fs, path, tv); + } + if (!err) + err = fuse_fs_getattr(f->fs, path, &buf); + fuse_finish_interrupt(f, req, &d); + free(path); + } + pthread_rwlock_unlock(&f->tree_lock); + if (!err) { + if (f->conf.auto_cache) { + pthread_mutex_lock(&f->lock); + update_stat(get_node(f, ino), &buf); + pthread_mutex_unlock(&f->lock); + } + set_stat(f, ino, &buf); + fuse_reply_attr(req, &buf, f->conf.attr_timeout); + } else + reply_err(req, err); } static void fuse_lib_access(fuse_req_t req, fuse_ino_t ino, int mask) { - struct fuse *f = req_fuse_prepare(req); - char *path; - int err; - - err = -ENOENT; - pthread_rwlock_rdlock(&f->tree_lock); - path = get_path(f, ino); - if (path != NULL) { - struct fuse_intr_data d; - if (f->conf.debug) - fprintf(stderr, "ACCESS %s 0%o\n", path, mask); - fuse_prepare_interrupt(f, req, &d); - err = fuse_fs_access(f->fs, path, mask); - fuse_finish_interrupt(f, req, &d); - free(path); - } - pthread_rwlock_unlock(&f->tree_lock); - reply_err(req, err); + struct fuse *f = req_fuse_prepare(req); + char *path; + int err; + + err = -ENOENT; + pthread_rwlock_rdlock(&f->tree_lock); + path = get_path(f, ino); + if (path != NULL) { + struct fuse_intr_data d; + if (f->conf.debug) + fprintf(stderr, "ACCESS %s 0%o\n", path, mask); + fuse_prepare_interrupt(f, req, &d); + err = fuse_fs_access(f->fs, path, mask); + fuse_finish_interrupt(f, req, &d); + free(path); + } + pthread_rwlock_unlock(&f->tree_lock); + reply_err(req, err); } static void fuse_lib_readlink(fuse_req_t req, fuse_ino_t ino) { - struct fuse *f = req_fuse_prepare(req); - char linkname[PATH_MAX + 1]; - char *path; - int err; - - err = -ENOENT; - pthread_rwlock_rdlock(&f->tree_lock); - path = get_path(f, ino); - if (path != NULL) { - struct fuse_intr_data d; - fuse_prepare_interrupt(f, req, &d); - err = fuse_fs_readlink(f->fs, path, linkname, sizeof(linkname)); - fuse_finish_interrupt(f, req, &d); - free(path); - } - pthread_rwlock_unlock(&f->tree_lock); - if (!err) { - linkname[PATH_MAX] = '\0'; - fuse_reply_readlink(req, linkname); - } else - reply_err(req, err); + struct fuse *f = req_fuse_prepare(req); + char linkname[PATH_MAX + 1]; + char *path; + int err; + + err = -ENOENT; + pthread_rwlock_rdlock(&f->tree_lock); + path = get_path(f, ino); + if (path != NULL) { + struct fuse_intr_data d; + fuse_prepare_interrupt(f, req, &d); + err = fuse_fs_readlink(f->fs, path, linkname, sizeof(linkname)); + fuse_finish_interrupt(f, req, &d); + free(path); + } + pthread_rwlock_unlock(&f->tree_lock); + if (!err) { + linkname[PATH_MAX] = '\0'; + fuse_reply_readlink(req, linkname); + } else + reply_err(req, err); } static void fuse_lib_mknod(fuse_req_t req, fuse_ino_t parent, const char *name, - mode_t mode, dev_t rdev) -{ - struct fuse *f = req_fuse_prepare(req); - struct fuse_entry_param e; - char *path; - int err; - - err = -ENOENT; - pthread_rwlock_rdlock(&f->tree_lock); - path = get_path_name(f, parent, name); - if (path) { - struct fuse_intr_data d; - if (f->conf.debug) - fprintf(stderr, "MKNOD %s\n", path); - fuse_prepare_interrupt(f, req, &d); - err = -ENOSYS; - if (S_ISREG(mode)) { - struct fuse_file_info fi; - - memset(&fi, 0, sizeof(fi)); - fi.flags = O_CREAT | O_EXCL | O_WRONLY; - err = fuse_fs_create(f->fs, path, mode, &fi); - if (!err) { - err = lookup_path(f, parent, name, path, &e, &fi); - fuse_fs_release(f->fs, path, &fi); - } - } - if (err == -ENOSYS) { - err = fuse_fs_mknod(f->fs, path, mode, rdev); - if (!err) - err = lookup_path(f, parent, name, path, &e, NULL); - } - fuse_finish_interrupt(f, req, &d); - free(path); - } - pthread_rwlock_unlock(&f->tree_lock); - reply_entry(req, &e, err); + mode_t mode, dev_t rdev) +{ + struct fuse *f = req_fuse_prepare(req); + struct fuse_entry_param e; + char *path; + int err; + + err = -ENOENT; + pthread_rwlock_rdlock(&f->tree_lock); + path = get_path_name(f, parent, name); + if (path) { + struct fuse_intr_data d; + if (f->conf.debug) + fprintf(stderr, "MKNOD %s\n", path); + fuse_prepare_interrupt(f, req, &d); + err = -ENOSYS; + if (S_ISREG(mode)) { + struct fuse_file_info fi; + + memset(&fi, 0, sizeof(fi)); + fi.flags = O_CREAT | O_EXCL | O_WRONLY; + err = fuse_fs_create(f->fs, path, mode, &fi); + if (!err) { + err = lookup_path(f, parent, name, path, &e, + &fi); + fuse_fs_release(f->fs, path, &fi); + } + } + if (err == -ENOSYS) { + err = fuse_fs_mknod(f->fs, path, mode, rdev); + if (!err) + err = lookup_path(f, parent, name, path, &e, + NULL); + } + fuse_finish_interrupt(f, req, &d); + free(path); + } + pthread_rwlock_unlock(&f->tree_lock); + reply_entry(req, &e, err); } static void fuse_lib_mkdir(fuse_req_t req, fuse_ino_t parent, const char *name, - mode_t mode) -{ - struct fuse *f = req_fuse_prepare(req); - struct fuse_entry_param e; - char *path; - int err; - - err = -ENOENT; - pthread_rwlock_rdlock(&f->tree_lock); - path = get_path_name(f, parent, name); - if (path != NULL) { - struct fuse_intr_data d; - if (f->conf.debug) - fprintf(stderr, "MKDIR %s\n", path); - fuse_prepare_interrupt(f, req, &d); - err = fuse_fs_mkdir(f->fs, path, mode); - if (!err) - err = lookup_path(f, parent, name, path, &e, NULL); - fuse_finish_interrupt(f, req, &d); - free(path); - } - pthread_rwlock_unlock(&f->tree_lock); - reply_entry(req, &e, err); + mode_t mode) +{ + struct fuse *f = req_fuse_prepare(req); + struct fuse_entry_param e; + char *path; + int err; + + err = -ENOENT; + pthread_rwlock_rdlock(&f->tree_lock); + path = get_path_name(f, parent, name); + if (path != NULL) { + struct fuse_intr_data d; + if (f->conf.debug) + fprintf(stderr, "MKDIR %s\n", path); + fuse_prepare_interrupt(f, req, &d); + err = fuse_fs_mkdir(f->fs, path, mode); + if (!err) + err = lookup_path(f, parent, name, path, &e, NULL); + fuse_finish_interrupt(f, req, &d); + free(path); + } + pthread_rwlock_unlock(&f->tree_lock); + reply_entry(req, &e, err); } static void fuse_lib_unlink(fuse_req_t req, fuse_ino_t parent, - const char *name) -{ - struct fuse *f = req_fuse_prepare(req); - char *path; - int err; - - err = -ENOENT; - pthread_rwlock_wrlock(&f->tree_lock); - path = get_path_name(f, parent, name); - if (path != NULL) { - struct fuse_intr_data d; - if (f->conf.debug) - fprintf(stderr, "UNLINK %s\n", path); - fuse_prepare_interrupt(f, req, &d); - if (!f->conf.hard_remove && is_open(f, parent, name)) - err = hide_node(f, path, parent, name); - else { - err = fuse_fs_unlink(f->fs, path); - if (!err) - remove_node(f, parent, name); - } - fuse_finish_interrupt(f, req, &d); - free(path); - } - pthread_rwlock_unlock(&f->tree_lock); - reply_err(req, err); + const char *name) +{ + struct fuse *f = req_fuse_prepare(req); + char *path; + int err; + + err = -ENOENT; + pthread_rwlock_wrlock(&f->tree_lock); + path = get_path_name(f, parent, name); + if (path != NULL) { + struct fuse_intr_data d; + if (f->conf.debug) + fprintf(stderr, "UNLINK %s\n", path); + fuse_prepare_interrupt(f, req, &d); + if (!f->conf.hard_remove && is_open(f, parent, name)) + err = hide_node(f, path, parent, name); + else { + err = fuse_fs_unlink(f->fs, path); + if (!err) + remove_node(f, parent, name); + } + fuse_finish_interrupt(f, req, &d); + free(path); + } + pthread_rwlock_unlock(&f->tree_lock); + reply_err(req, err); } static void fuse_lib_rmdir(fuse_req_t req, fuse_ino_t parent, const char *name) { - struct fuse *f = req_fuse_prepare(req); - char *path; - int err; - - err = -ENOENT; - pthread_rwlock_wrlock(&f->tree_lock); - path = get_path_name(f, parent, name); - if (path != NULL) { - struct fuse_intr_data d; - if (f->conf.debug) - fprintf(stderr, "RMDIR %s\n", path); - fuse_prepare_interrupt(f, req, &d); - err = fuse_fs_rmdir(f->fs, path); - fuse_finish_interrupt(f, req, &d); - if (!err) - remove_node(f, parent, name); - free(path); - } - pthread_rwlock_unlock(&f->tree_lock); - reply_err(req, err); + struct fuse *f = req_fuse_prepare(req); + char *path; + int err; + + err = -ENOENT; + pthread_rwlock_wrlock(&f->tree_lock); + path = get_path_name(f, parent, name); + if (path != NULL) { + struct fuse_intr_data d; + if (f->conf.debug) + fprintf(stderr, "RMDIR %s\n", path); + fuse_prepare_interrupt(f, req, &d); + err = fuse_fs_rmdir(f->fs, path); + fuse_finish_interrupt(f, req, &d); + if (!err) + remove_node(f, parent, name); + free(path); + } + pthread_rwlock_unlock(&f->tree_lock); + reply_err(req, err); } static void fuse_lib_symlink(fuse_req_t req, const char *linkname, - fuse_ino_t parent, const char *name) -{ - struct fuse *f = req_fuse_prepare(req); - struct fuse_entry_param e; - char *path; - int err; - - err = -ENOENT; - pthread_rwlock_rdlock(&f->tree_lock); - path = get_path_name(f, parent, name); - if (path != NULL) { - struct fuse_intr_data d; - if (f->conf.debug) - fprintf(stderr, "SYMLINK %s\n", path); - fuse_prepare_interrupt(f, req, &d); - err = fuse_fs_symlink(f->fs, linkname, path); - if (!err) - err = lookup_path(f, parent, name, path, &e, NULL); - fuse_finish_interrupt(f, req, &d); - free(path); - } - pthread_rwlock_unlock(&f->tree_lock); - reply_entry(req, &e, err); + fuse_ino_t parent, const char *name) +{ + struct fuse *f = req_fuse_prepare(req); + struct fuse_entry_param e; + char *path; + int err; + + err = -ENOENT; + pthread_rwlock_rdlock(&f->tree_lock); + path = get_path_name(f, parent, name); + if (path != NULL) { + struct fuse_intr_data d; + if (f->conf.debug) + fprintf(stderr, "SYMLINK %s\n", path); + fuse_prepare_interrupt(f, req, &d); + err = fuse_fs_symlink(f->fs, linkname, path); + if (!err) + err = lookup_path(f, parent, name, path, &e, NULL); + fuse_finish_interrupt(f, req, &d); + free(path); + } + pthread_rwlock_unlock(&f->tree_lock); + reply_entry(req, &e, err); } static void fuse_lib_rename(fuse_req_t req, fuse_ino_t olddir, - const char *oldname, fuse_ino_t newdir, - const char *newname) -{ - struct fuse *f = req_fuse_prepare(req); - char *oldpath; - char *newpath; - int err; - - err = -ENOENT; - pthread_rwlock_wrlock(&f->tree_lock); - oldpath = get_path_name(f, olddir, oldname); - if (oldpath != NULL) { - newpath = get_path_name(f, newdir, newname); - if (newpath != NULL) { - struct fuse_intr_data d; - if (f->conf.debug) - fprintf(stderr, "RENAME %s -> %s\n", oldpath, newpath); - err = 0; - fuse_prepare_interrupt(f, req, &d); - if (!f->conf.hard_remove && is_open(f, newdir, newname)) - err = hide_node(f, newpath, newdir, newname); - if (!err) { - err = fuse_fs_rename(f->fs, oldpath, newpath); - if (!err) - err = rename_node(f, olddir, oldname, newdir, newname, 0); - } - fuse_finish_interrupt(f, req, &d); - free(newpath); - } - free(oldpath); - } - pthread_rwlock_unlock(&f->tree_lock); - reply_err(req, err); + const char *oldname, fuse_ino_t newdir, + const char *newname) +{ + struct fuse *f = req_fuse_prepare(req); + char *oldpath; + char *newpath; + int err; + + err = -ENOENT; + pthread_rwlock_wrlock(&f->tree_lock); + oldpath = get_path_name(f, olddir, oldname); + if (oldpath != NULL) { + newpath = get_path_name(f, newdir, newname); + if (newpath != NULL) { + struct fuse_intr_data d; + if (f->conf.debug) + fprintf(stderr, "RENAME %s -> %s\n", oldpath, + newpath); + err = 0; + fuse_prepare_interrupt(f, req, &d); + if (!f->conf.hard_remove && is_open(f, newdir, newname)) + err = hide_node(f, newpath, newdir, newname); + if (!err) { + err = fuse_fs_rename(f->fs, oldpath, newpath); + if (!err) + err = rename_node(f, olddir, oldname, + newdir, newname, 0); + } + fuse_finish_interrupt(f, req, &d); + free(newpath); + } + free(oldpath); + } + pthread_rwlock_unlock(&f->tree_lock); + reply_err(req, err); } static void fuse_lib_link(fuse_req_t req, fuse_ino_t ino, fuse_ino_t newparent, - const char *newname) -{ - struct fuse *f = req_fuse_prepare(req); - struct fuse_entry_param e; - char *oldpath; - char *newpath; - int err; - - err = -ENOENT; - pthread_rwlock_rdlock(&f->tree_lock); - oldpath = get_path(f, ino); - if (oldpath != NULL) { - newpath = get_path_name(f, newparent, newname); - if (newpath != NULL) { - struct fuse_intr_data d; - if (f->conf.debug) - fprintf(stderr, "LINK %s\n", newpath); - fuse_prepare_interrupt(f, req, &d); - err = fuse_fs_link(f->fs, oldpath, newpath); - if (!err) - err = lookup_path(f, newparent, newname, newpath, &e, NULL); - fuse_finish_interrupt(f, req, &d); - free(newpath); - } - free(oldpath); - } - pthread_rwlock_unlock(&f->tree_lock); - reply_entry(req, &e, err); + const char *newname) +{ + struct fuse *f = req_fuse_prepare(req); + struct fuse_entry_param e; + char *oldpath; + char *newpath; + int err; + + err = -ENOENT; + pthread_rwlock_rdlock(&f->tree_lock); + oldpath = get_path(f, ino); + if (oldpath != NULL) { + newpath = get_path_name(f, newparent, newname); + if (newpath != NULL) { + struct fuse_intr_data d; + if (f->conf.debug) + fprintf(stderr, "LINK %s\n", newpath); + fuse_prepare_interrupt(f, req, &d); + err = fuse_fs_link(f->fs, oldpath, newpath); + if (!err) + err = lookup_path(f, newparent, newname, + newpath, &e, NULL); + fuse_finish_interrupt(f, req, &d); + free(newpath); + } + free(oldpath); + } + pthread_rwlock_unlock(&f->tree_lock); + reply_entry(req, &e, err); } static void fuse_do_release(struct fuse *f, fuse_ino_t ino, const char *path, - struct fuse_file_info *fi) + struct fuse_file_info *fi) { - struct node *node; - int unlink_hidden = 0; + struct node *node; + int unlink_hidden = 0; - fuse_fs_release(f->fs, path ? path : "-", fi); + fuse_fs_release(f->fs, path ? path : "-", fi); - pthread_mutex_lock(&f->lock); - node = get_node(f, ino); - assert(node->open_count > 0); - --node->open_count; - if (node->is_hidden && !node->open_count) { - unlink_hidden = 1; - node->is_hidden = 0; - } - pthread_mutex_unlock(&f->lock); + pthread_mutex_lock(&f->lock); + node = get_node(f, ino); + assert(node->open_count > 0); + --node->open_count; + if (node->is_hidden && !node->open_count) { + unlink_hidden = 1; + node->is_hidden = 0; + } + pthread_mutex_unlock(&f->lock); - if(unlink_hidden && path) - fuse_fs_unlink(f->fs, path); + if(unlink_hidden && path) + fuse_fs_unlink(f->fs, path); } static void fuse_lib_create(fuse_req_t req, fuse_ino_t parent, - const char *name, mode_t mode, - struct fuse_file_info *fi) -{ - struct fuse *f = req_fuse_prepare(req); - struct fuse_intr_data d; - struct fuse_entry_param e; - char *path; - int err; - - err = -ENOENT; - pthread_rwlock_rdlock(&f->tree_lock); - path = get_path_name(f, parent, name); - if (path) { - fuse_prepare_interrupt(f, req, &d); - err = fuse_fs_create(f->fs, path, mode, fi); - if (!err) { - err = lookup_path(f, parent, name, path, &e, fi); - if (err) - fuse_fs_release(f->fs, path, fi); - else if (!S_ISREG(e.attr.st_mode)) { - err = -EIO; - fuse_fs_release(f->fs, path, fi); - forget_node(f, e.ino, 1); - } else { - if (f->conf.direct_io) - fi->direct_io = 1; - if (f->conf.kernel_cache) - fi->keep_cache = 1; - - } - } - fuse_finish_interrupt(f, req, &d); - } - if (!err) { - pthread_mutex_lock(&f->lock); - get_node(f, e.ino)->open_count++; - pthread_mutex_unlock(&f->lock); - if (fuse_reply_create(req, &e, fi) == -ENOENT) { - /* The open syscall was interrupted, so it must be cancelled */ - fuse_prepare_interrupt(f, req, &d); - fuse_do_release(f, e.ino, path, fi); - fuse_finish_interrupt(f, req, &d); - forget_node(f, e.ino, 1); - } else if (f->conf.debug) { - fprintf(stderr, " CREATE[%llu] flags: 0x%x %s\n", - (unsigned long long) fi->fh, fi->flags, path); - } - } else - reply_err(req, err); - - if (path) - free(path); - - pthread_rwlock_unlock(&f->tree_lock); + const char *name, mode_t mode, + struct fuse_file_info *fi) +{ + struct fuse *f = req_fuse_prepare(req); + struct fuse_intr_data d; + struct fuse_entry_param e; + char *path; + int err; + + err = -ENOENT; + pthread_rwlock_rdlock(&f->tree_lock); + path = get_path_name(f, parent, name); + if (path) { + fuse_prepare_interrupt(f, req, &d); + err = fuse_fs_create(f->fs, path, mode, fi); + if (!err) { + err = lookup_path(f, parent, name, path, &e, fi); + if (err) + fuse_fs_release(f->fs, path, fi); + else if (!S_ISREG(e.attr.st_mode)) { + err = -EIO; + fuse_fs_release(f->fs, path, fi); + forget_node(f, e.ino, 1); + } else { + if (f->conf.direct_io) + fi->direct_io = 1; + if (f->conf.kernel_cache) + fi->keep_cache = 1; + + } + } + fuse_finish_interrupt(f, req, &d); + } + if (!err) { + pthread_mutex_lock(&f->lock); + get_node(f, e.ino)->open_count++; + pthread_mutex_unlock(&f->lock); + if (fuse_reply_create(req, &e, fi) == -ENOENT) { + /* The open syscall was interrupted, so it + must be cancelled */ + fuse_prepare_interrupt(f, req, &d); + fuse_do_release(f, e.ino, path, fi); + fuse_finish_interrupt(f, req, &d); + forget_node(f, e.ino, 1); + } else if (f->conf.debug) { + fprintf(stderr, " CREATE[%llu] flags: 0x%x %s\n", + (unsigned long long) fi->fh, fi->flags, path); + } + } else + reply_err(req, err); + + if (path) + free(path); + + pthread_rwlock_unlock(&f->tree_lock); } static double diff_timespec(const struct timespec *t1, - const struct timespec *t2) + const struct timespec *t2) { - return (t1->tv_sec - t2->tv_sec) + - ((double) t1->tv_nsec - (double) t2->tv_nsec) / 1000000000.0; + return (t1->tv_sec - t2->tv_sec) + + ((double) t1->tv_nsec - (double) t2->tv_nsec) / 1000000000.0; } static void open_auto_cache(struct fuse *f, fuse_ino_t ino, const char *path, - struct fuse_file_info *fi) -{ - struct node *node; - - pthread_mutex_lock(&f->lock); - node = get_node(f, ino); - if (node->cache_valid) { - struct timespec now; - - curr_time(&now); - if (diff_timespec(&now, &node->stat_updated) > f->conf.ac_attr_timeout) { - struct stat stbuf; - int err; - pthread_mutex_unlock(&f->lock); - err = fuse_fs_fgetattr(f->fs, path, &stbuf, fi); - pthread_mutex_lock(&f->lock); - if (!err) - update_stat(node, &stbuf); - else - node->cache_valid = 0; - } - } - if (node->cache_valid) - fi->keep_cache = 1; - - node->cache_valid = 1; - pthread_mutex_unlock(&f->lock); + struct fuse_file_info *fi) +{ + struct node *node; + + pthread_mutex_lock(&f->lock); + node = get_node(f, ino); + if (node->cache_valid) { + struct timespec now; + + curr_time(&now); + if (diff_timespec(&now, &node->stat_updated) > + f->conf.ac_attr_timeout) { + struct stat stbuf; + int err; + pthread_mutex_unlock(&f->lock); + err = fuse_fs_fgetattr(f->fs, path, &stbuf, fi); + pthread_mutex_lock(&f->lock); + if (!err) + update_stat(node, &stbuf); + else + node->cache_valid = 0; + } + } + if (node->cache_valid) + fi->keep_cache = 1; + + node->cache_valid = 1; + pthread_mutex_unlock(&f->lock); } static void fuse_lib_open(fuse_req_t req, fuse_ino_t ino, - struct fuse_file_info *fi) -{ - struct fuse *f = req_fuse_prepare(req); - struct fuse_intr_data d; - char *path = NULL; - int err = 0; - - err = -ENOENT; - pthread_rwlock_rdlock(&f->tree_lock); - path = get_path(f, ino); - if (path) { - fuse_prepare_interrupt(f, req, &d); - err = fuse_fs_open(f->fs, path, fi); - if (!err) { - if (f->conf.direct_io) - fi->direct_io = 1; - if (f->conf.kernel_cache) - fi->keep_cache = 1; - - if (f->conf.auto_cache) - open_auto_cache(f, ino, path, fi); - } - fuse_finish_interrupt(f, req, &d); - } - if (!err) { - pthread_mutex_lock(&f->lock); - get_node(f, ino)->open_count++; - pthread_mutex_unlock(&f->lock); - if (fuse_reply_open(req, fi) == -ENOENT) { - /* The open syscall was interrupted, so it must be cancelled */ - fuse_prepare_interrupt(f, req, &d); - fuse_do_release(f, ino, path, fi); - fuse_finish_interrupt(f, req, &d); - } else if (f->conf.debug) { - fprintf(stderr, "OPEN[%llu] flags: 0x%x %s\n", - (unsigned long long) fi->fh, fi->flags, path); - } - } else - reply_err(req, err); - - if (path) - free(path); - pthread_rwlock_unlock(&f->tree_lock); + struct fuse_file_info *fi) +{ + struct fuse *f = req_fuse_prepare(req); + struct fuse_intr_data d; + char *path = NULL; + int err = 0; + + err = -ENOENT; + pthread_rwlock_rdlock(&f->tree_lock); + path = get_path(f, ino); + if (path) { + fuse_prepare_interrupt(f, req, &d); + err = fuse_fs_open(f->fs, path, fi); + if (!err) { + if (f->conf.direct_io) + fi->direct_io = 1; + if (f->conf.kernel_cache) + fi->keep_cache = 1; + + if (f->conf.auto_cache) + open_auto_cache(f, ino, path, fi); + } + fuse_finish_interrupt(f, req, &d); + } + if (!err) { + pthread_mutex_lock(&f->lock); + get_node(f, ino)->open_count++; + pthread_mutex_unlock(&f->lock); + if (fuse_reply_open(req, fi) == -ENOENT) { + /* The open syscall was interrupted, so it + must be cancelled */ + fuse_prepare_interrupt(f, req, &d); + fuse_do_release(f, ino, path, fi); + fuse_finish_interrupt(f, req, &d); + } else if (f->conf.debug) { + fprintf(stderr, "OPEN[%llu] flags: 0x%x %s\n", + (unsigned long long) fi->fh, fi->flags, path); + } + } else + reply_err(req, err); + + if (path) + free(path); + pthread_rwlock_unlock(&f->tree_lock); } static void fuse_lib_read(fuse_req_t req, fuse_ino_t ino, size_t size, - off_t off, struct fuse_file_info *fi) -{ - struct fuse *f = req_fuse_prepare(req); - char *path; - char *buf; - int res; - - buf = (char *) malloc(size); - if (buf == NULL) { - reply_err(req, -ENOMEM); - return; - } - - res = -ENOENT; - pthread_rwlock_rdlock(&f->tree_lock); - path = get_path(f, ino); - if (path != NULL) { - struct fuse_intr_data d; - if (f->conf.debug) - fprintf(stderr, "READ[%llu] %lu bytes from %llu\n", - (unsigned long long) fi->fh, (unsigned long) size, - (unsigned long long) off); - - fuse_prepare_interrupt(f, req, &d); - res = fuse_fs_read(f->fs, path, buf, size, off, fi); - fuse_finish_interrupt(f, req, &d); - free(path); - } - pthread_rwlock_unlock(&f->tree_lock); - - if (res >= 0) { - if (f->conf.debug) - fprintf(stderr, " READ[%llu] %u bytes\n", - (unsigned long long)fi->fh, res); - if ((size_t) res > size) - fprintf(stderr, "fuse: read too many bytes"); - fuse_reply_buf(req, buf, res); - } else - reply_err(req, res); - - free(buf); + off_t off, struct fuse_file_info *fi) +{ + struct fuse *f = req_fuse_prepare(req); + char *path; + char *buf; + int res; + + buf = (char *) malloc(size); + if (buf == NULL) { + reply_err(req, -ENOMEM); + return; + } + + res = -ENOENT; + pthread_rwlock_rdlock(&f->tree_lock); + path = get_path(f, ino); + if (path != NULL) { + struct fuse_intr_data d; + if (f->conf.debug) + fprintf(stderr, "READ[%llu] %lu bytes from %llu\n", + (unsigned long long) fi->fh, + (unsigned long) size, (unsigned long long) off); + + fuse_prepare_interrupt(f, req, &d); + res = fuse_fs_read(f->fs, path, buf, size, off, fi); + fuse_finish_interrupt(f, req, &d); + free(path); + } + pthread_rwlock_unlock(&f->tree_lock); + + if (res >= 0) { + if (f->conf.debug) + fprintf(stderr, " READ[%llu] %u bytes\n", + (unsigned long long)fi->fh, res); + if ((size_t) res > size) + fprintf(stderr, "fuse: read too many bytes"); + fuse_reply_buf(req, buf, res); + } else + reply_err(req, res); + + free(buf); } static void fuse_lib_write(fuse_req_t req, fuse_ino_t ino, const char *buf, - size_t size, off_t off, struct fuse_file_info *fi) -{ - struct fuse *f = req_fuse_prepare(req); - char *path; - int res; - - res = -ENOENT; - pthread_rwlock_rdlock(&f->tree_lock); - path = get_path(f, ino); - if (path != NULL) { - struct fuse_intr_data d; - if (f->conf.debug) - fprintf(stderr, "WRITE%s[%llu] %lu bytes to %llu\n", - fi->writepage ? "PAGE" : "", (unsigned long long) fi->fh, - (unsigned long) size, (unsigned long long) off); - - fuse_prepare_interrupt(f, req, &d); - res = fuse_fs_write(f->fs, path, buf, size, off, fi); - fuse_finish_interrupt(f, req, &d); - free(path); - } - pthread_rwlock_unlock(&f->tree_lock); - - if (res >= 0) { - if (f->conf.debug) - fprintf(stderr, " WRITE%s[%llu] %u bytes\n", - fi->writepage ? "PAGE" : "", (unsigned long long) fi->fh, - res); - if ((size_t) res > size) - fprintf(stderr, "fuse: wrote too many bytes"); - fuse_reply_write(req, res); - } else - reply_err(req, res); + size_t size, off_t off, struct fuse_file_info *fi) +{ + struct fuse *f = req_fuse_prepare(req); + char *path; + int res; + + res = -ENOENT; + pthread_rwlock_rdlock(&f->tree_lock); + path = get_path(f, ino); + if (path != NULL) { + struct fuse_intr_data d; + if (f->conf.debug) + fprintf(stderr, "WRITE%s[%llu] %lu bytes to %llu\n", + fi->writepage ? "PAGE" : "", + (unsigned long long) fi->fh, + (unsigned long) size, (unsigned long long) off); + + fuse_prepare_interrupt(f, req, &d); + res = fuse_fs_write(f->fs, path, buf, size, off, fi); + fuse_finish_interrupt(f, req, &d); + free(path); + } + pthread_rwlock_unlock(&f->tree_lock); + + if (res >= 0) { + if (f->conf.debug) + fprintf(stderr, " WRITE%s[%llu] %u bytes\n", + fi->writepage ? "PAGE" : "", + (unsigned long long) fi->fh, res); + if ((size_t) res > size) + fprintf(stderr, "fuse: wrote too many bytes"); + fuse_reply_write(req, res); + } else + reply_err(req, res); } static void fuse_lib_fsync(fuse_req_t req, fuse_ino_t ino, int datasync, - struct fuse_file_info *fi) -{ - struct fuse *f = req_fuse_prepare(req); - char *path; - int err; - - err = -ENOENT; - pthread_rwlock_rdlock(&f->tree_lock); - path = get_path(f, ino); - if (path != NULL) { - struct fuse_intr_data d; - if (f->conf.debug) - fprintf(stderr, "FSYNC[%llu]\n", (unsigned long long) fi->fh); - fuse_prepare_interrupt(f, req, &d); - err = fuse_fs_fsync(f->fs, path, datasync, fi); - fuse_finish_interrupt(f, req, &d); - free(path); - } - pthread_rwlock_unlock(&f->tree_lock); - reply_err(req, err); + struct fuse_file_info *fi) +{ + struct fuse *f = req_fuse_prepare(req); + char *path; + int err; + + err = -ENOENT; + pthread_rwlock_rdlock(&f->tree_lock); + path = get_path(f, ino); + if (path != NULL) { + struct fuse_intr_data d; + if (f->conf.debug) + fprintf(stderr, "FSYNC[%llu]\n", + (unsigned long long) fi->fh); + fuse_prepare_interrupt(f, req, &d); + err = fuse_fs_fsync(f->fs, path, datasync, fi); + fuse_finish_interrupt(f, req, &d); + free(path); + } + pthread_rwlock_unlock(&f->tree_lock); + reply_err(req, err); } static struct fuse_dh *get_dirhandle(const struct fuse_file_info *llfi, - struct fuse_file_info *fi) + struct fuse_file_info *fi) { - struct fuse_dh *dh = (struct fuse_dh *) (uintptr_t) llfi->fh; - memset(fi, 0, sizeof(struct fuse_file_info)); - fi->fh = dh->fh; - fi->fh_old = dh->fh; - return dh; + struct fuse_dh *dh = (struct fuse_dh *) (uintptr_t) llfi->fh; + memset(fi, 0, sizeof(struct fuse_file_info)); + fi->fh = dh->fh; + fi->fh_old = dh->fh; + return dh; } static void fuse_lib_opendir(fuse_req_t req, fuse_ino_t ino, - struct fuse_file_info *llfi) -{ - struct fuse *f = req_fuse_prepare(req); - struct fuse_intr_data d; - struct fuse_dh *dh; - struct fuse_file_info fi; - char *path; - int err; - - dh = (struct fuse_dh *) malloc(sizeof(struct fuse_dh)); - if (dh == NULL) { - reply_err(req, -ENOMEM); - return; - } - memset(dh, 0, sizeof(struct fuse_dh)); - dh->fuse = f; - dh->contents = NULL; - dh->len = 0; - dh->filled = 0; - dh->nodeid = ino; - fuse_mutex_init(&dh->lock); - - llfi->fh = (uintptr_t) dh; - - memset(&fi, 0, sizeof(fi)); - fi.flags = llfi->flags; - - err = -ENOENT; - pthread_rwlock_rdlock(&f->tree_lock); - path = get_path(f, ino); - if (path != NULL) { - fuse_prepare_interrupt(f, req, &d); - err = fuse_fs_opendir(f->fs, path, &fi); - fuse_finish_interrupt(f, req, &d); - dh->fh = fi.fh; - } - if (!err) { - if (fuse_reply_open(req, llfi) == -ENOENT) { - /* The opendir syscall was interrupted, so it must be cancelled */ - fuse_prepare_interrupt(f, req, &d); - fuse_fs_releasedir(f->fs, path, &fi); - fuse_finish_interrupt(f, req, &d); - pthread_mutex_destroy(&dh->lock); - free(dh); - } - } else { - reply_err(req, err); - free(dh); - } - free(path); - pthread_rwlock_unlock(&f->tree_lock); + struct fuse_file_info *llfi) +{ + struct fuse *f = req_fuse_prepare(req); + struct fuse_intr_data d; + struct fuse_dh *dh; + struct fuse_file_info fi; + char *path; + int err; + + dh = (struct fuse_dh *) malloc(sizeof(struct fuse_dh)); + if (dh == NULL) { + reply_err(req, -ENOMEM); + return; + } + memset(dh, 0, sizeof(struct fuse_dh)); + dh->fuse = f; + dh->contents = NULL; + dh->len = 0; + dh->filled = 0; + dh->nodeid = ino; + fuse_mutex_init(&dh->lock); + + llfi->fh = (uintptr_t) dh; + + memset(&fi, 0, sizeof(fi)); + fi.flags = llfi->flags; + + err = -ENOENT; + pthread_rwlock_rdlock(&f->tree_lock); + path = get_path(f, ino); + if (path != NULL) { + fuse_prepare_interrupt(f, req, &d); + err = fuse_fs_opendir(f->fs, path, &fi); + fuse_finish_interrupt(f, req, &d); + dh->fh = fi.fh; + } + if (!err) { + if (fuse_reply_open(req, llfi) == -ENOENT) { + /* The opendir syscall was interrupted, so it + must be cancelled */ + fuse_prepare_interrupt(f, req, &d); + fuse_fs_releasedir(f->fs, path, &fi); + fuse_finish_interrupt(f, req, &d); + pthread_mutex_destroy(&dh->lock); + free(dh); + } + } else { + reply_err(req, err); + free(dh); + } + free(path); + pthread_rwlock_unlock(&f->tree_lock); } static int extend_contents(struct fuse_dh *dh, unsigned minsize) { - if (minsize > dh->size) { - char *newptr; - unsigned newsize = dh->size; - if (!newsize) - newsize = 1024; - while (newsize < minsize) - newsize *= 2; - - newptr = (char *) realloc(dh->contents, newsize); - if (!newptr) { - dh->error = -ENOMEM; - return -1; - } - dh->contents = newptr; - dh->size = newsize; - } - return 0; + if (minsize > dh->size) { + char *newptr; + unsigned newsize = dh->size; + if (!newsize) + newsize = 1024; + while (newsize < minsize) + newsize *= 2; + + newptr = (char *) realloc(dh->contents, newsize); + if (!newptr) { + dh->error = -ENOMEM; + return -1; + } + dh->contents = newptr; + dh->size = newsize; + } + return 0; } static int fill_dir(void *dh_, const char *name, const struct stat *statp, - off_t off) -{ - struct fuse_dh *dh = (struct fuse_dh *) dh_; - struct stat stbuf; - size_t newlen; - - if (statp) - stbuf = *statp; - else { - memset(&stbuf, 0, sizeof(stbuf)); - stbuf.st_ino = FUSE_UNKNOWN_INO; - } - - if (!dh->fuse->conf.use_ino) { - stbuf.st_ino = FUSE_UNKNOWN_INO; - if (dh->fuse->conf.readdir_ino) { - struct node *node; - pthread_mutex_lock(&dh->fuse->lock); - node = lookup_node(dh->fuse, dh->nodeid, name); - if (node) - stbuf.st_ino = (ino_t) node->nodeid; - pthread_mutex_unlock(&dh->fuse->lock); - } - } - - if (off) { - if (extend_contents(dh, dh->needlen) == -1) - return 1; - - dh->filled = 0; - newlen = dh->len + fuse_add_direntry(dh->req, dh->contents + dh->len, - dh->needlen - dh->len, name, - &stbuf, off); - if (newlen > dh->needlen) - return 1; - } else { - newlen = dh->len + fuse_add_direntry(dh->req, NULL, 0, name, NULL, 0); - if (extend_contents(dh, newlen) == -1) - return 1; - - fuse_add_direntry(dh->req, dh->contents + dh->len, dh->size - dh->len, - name, &stbuf, newlen); - } - dh->len = newlen; - return 0; + off_t off) +{ + struct fuse_dh *dh = (struct fuse_dh *) dh_; + struct stat stbuf; + size_t newlen; + + if (statp) + stbuf = *statp; + else { + memset(&stbuf, 0, sizeof(stbuf)); + stbuf.st_ino = FUSE_UNKNOWN_INO; + } + + if (!dh->fuse->conf.use_ino) { + stbuf.st_ino = FUSE_UNKNOWN_INO; + if (dh->fuse->conf.readdir_ino) { + struct node *node; + pthread_mutex_lock(&dh->fuse->lock); + node = lookup_node(dh->fuse, dh->nodeid, name); + if (node) + stbuf.st_ino = (ino_t) node->nodeid; + pthread_mutex_unlock(&dh->fuse->lock); + } + } + + if (off) { + if (extend_contents(dh, dh->needlen) == -1) + return 1; + + dh->filled = 0; + newlen = dh->len + + fuse_add_direntry(dh->req, dh->contents + dh->len, + dh->needlen - dh->len, name, + &stbuf, off); + if (newlen > dh->needlen) + return 1; + } else { + newlen = dh->len + + fuse_add_direntry(dh->req, NULL, 0, name, NULL, 0); + if (extend_contents(dh, newlen) == -1) + return 1; + + fuse_add_direntry(dh->req, dh->contents + dh->len, + dh->size - dh->len, name, &stbuf, newlen); + } + dh->len = newlen; + return 0; } static int readdir_fill(struct fuse *f, fuse_req_t req, fuse_ino_t ino, - size_t size, off_t off, struct fuse_dh *dh, - struct fuse_file_info *fi) -{ - int err = -ENOENT; - char *path; - pthread_rwlock_rdlock(&f->tree_lock); - path = get_path(f, ino); - if (path != NULL) { - struct fuse_intr_data d; - - dh->len = 0; - dh->error = 0; - dh->needlen = size; - dh->filled = 1; - dh->req = req; - fuse_prepare_interrupt(f, req, &d); - err = fuse_fs_readdir(f->fs, path, dh, fill_dir, off, fi); - fuse_finish_interrupt(f, req, &d); - dh->req = NULL; - if (!err) - err = dh->error; - if (err) - dh->filled = 0; - free(path); - } - pthread_rwlock_unlock(&f->tree_lock); - return err; + size_t size, off_t off, struct fuse_dh *dh, + struct fuse_file_info *fi) +{ + int err = -ENOENT; + char *path; + pthread_rwlock_rdlock(&f->tree_lock); + path = get_path(f, ino); + if (path != NULL) { + struct fuse_intr_data d; + + dh->len = 0; + dh->error = 0; + dh->needlen = size; + dh->filled = 1; + dh->req = req; + fuse_prepare_interrupt(f, req, &d); + err = fuse_fs_readdir(f->fs, path, dh, fill_dir, off, fi); + fuse_finish_interrupt(f, req, &d); + dh->req = NULL; + if (!err) + err = dh->error; + if (err) + dh->filled = 0; + free(path); + } + pthread_rwlock_unlock(&f->tree_lock); + return err; } static void fuse_lib_readdir(fuse_req_t req, fuse_ino_t ino, size_t size, - off_t off, struct fuse_file_info *llfi) -{ - struct fuse *f = req_fuse_prepare(req); - struct fuse_file_info fi; - struct fuse_dh *dh = get_dirhandle(llfi, &fi); - - pthread_mutex_lock(&dh->lock); - /* According to SUS, directory contents need to be refreshed on - rewinddir() */ - if (!off) - dh->filled = 0; - - if (!dh->filled) { - int err = readdir_fill(f, req, ino, size, off, dh, &fi); - if (err) { - reply_err(req, err); - goto out; - } - } - if (dh->filled) { - if (off < dh->len) { - if (off + size > dh->len) - size = dh->len - off; - } else - size = 0; - } else { - size = dh->len; - off = 0; - } - fuse_reply_buf(req, dh->contents + off, size); - out: - pthread_mutex_unlock(&dh->lock); + off_t off, struct fuse_file_info *llfi) +{ + struct fuse *f = req_fuse_prepare(req); + struct fuse_file_info fi; + struct fuse_dh *dh = get_dirhandle(llfi, &fi); + + pthread_mutex_lock(&dh->lock); + /* According to SUS, directory contents need to be refreshed on + rewinddir() */ + if (!off) + dh->filled = 0; + + if (!dh->filled) { + int err = readdir_fill(f, req, ino, size, off, dh, &fi); + if (err) { + reply_err(req, err); + goto out; + } + } + if (dh->filled) { + if (off < dh->len) { + if (off + size > dh->len) + size = dh->len - off; + } else + size = 0; + } else { + size = dh->len; + off = 0; + } + fuse_reply_buf(req, dh->contents + off, size); +out: + pthread_mutex_unlock(&dh->lock); } static void fuse_lib_releasedir(fuse_req_t req, fuse_ino_t ino, - struct fuse_file_info *llfi) -{ - struct fuse *f = req_fuse_prepare(req); - struct fuse_intr_data d; - struct fuse_file_info fi; - struct fuse_dh *dh = get_dirhandle(llfi, &fi); - char *path; - - pthread_rwlock_rdlock(&f->tree_lock); - path = get_path(f, ino); - fuse_prepare_interrupt(f, req, &d); - fuse_fs_releasedir(f->fs, path ? path : "-", &fi); - fuse_finish_interrupt(f, req, &d); - if (path) - free(path); - pthread_rwlock_unlock(&f->tree_lock); - pthread_mutex_lock(&dh->lock); - pthread_mutex_unlock(&dh->lock); - pthread_mutex_destroy(&dh->lock); - free(dh->contents); - free(dh); - reply_err(req, 0); + struct fuse_file_info *llfi) +{ + struct fuse *f = req_fuse_prepare(req); + struct fuse_intr_data d; + struct fuse_file_info fi; + struct fuse_dh *dh = get_dirhandle(llfi, &fi); + char *path; + + pthread_rwlock_rdlock(&f->tree_lock); + path = get_path(f, ino); + fuse_prepare_interrupt(f, req, &d); + fuse_fs_releasedir(f->fs, path ? path : "-", &fi); + fuse_finish_interrupt(f, req, &d); + if (path) + free(path); + pthread_rwlock_unlock(&f->tree_lock); + pthread_mutex_lock(&dh->lock); + pthread_mutex_unlock(&dh->lock); + pthread_mutex_destroy(&dh->lock); + free(dh->contents); + free(dh); + reply_err(req, 0); } static void fuse_lib_fsyncdir(fuse_req_t req, fuse_ino_t ino, int datasync, - struct fuse_file_info *llfi) + struct fuse_file_info *llfi) { - struct fuse *f = req_fuse_prepare(req); - struct fuse_file_info fi; - char *path; - int err; + struct fuse *f = req_fuse_prepare(req); + struct fuse_file_info fi; + char *path; + int err; - get_dirhandle(llfi, &fi); + get_dirhandle(llfi, &fi); - err = -ENOENT; - pthread_rwlock_rdlock(&f->tree_lock); - path = get_path(f, ino); - if (path != NULL) { - struct fuse_intr_data d; - fuse_prepare_interrupt(f, req, &d); - err = fuse_fs_fsyncdir(f->fs, path, datasync, &fi); - fuse_finish_interrupt(f, req, &d); - free(path); - } - pthread_rwlock_unlock(&f->tree_lock); - reply_err(req, err); + err = -ENOENT; + pthread_rwlock_rdlock(&f->tree_lock); + path = get_path(f, ino); + if (path != NULL) { + struct fuse_intr_data d; + fuse_prepare_interrupt(f, req, &d); + err = fuse_fs_fsyncdir(f->fs, path, datasync, &fi); + fuse_finish_interrupt(f, req, &d); + free(path); + } + pthread_rwlock_unlock(&f->tree_lock); + reply_err(req, err); } static void fuse_lib_statfs(fuse_req_t req, fuse_ino_t ino) { - struct fuse *f = req_fuse_prepare(req); - struct statvfs buf; - char *path; - int err; - - memset(&buf, 0, sizeof(buf)); - pthread_rwlock_rdlock(&f->tree_lock); - if (!ino) { - err = -ENOMEM; - path = strdup("/"); - } else { - err = -ENOENT; - path = get_path(f, ino); - } - if (path) { - struct fuse_intr_data d; - fuse_prepare_interrupt(f, req, &d); - err = fuse_fs_statfs(f->fs, path, &buf); - fuse_finish_interrupt(f, req, &d); - free(path); - } - pthread_rwlock_unlock(&f->tree_lock); - - if (!err) - fuse_reply_statfs(req, &buf); - else - reply_err(req, err); + struct fuse *f = req_fuse_prepare(req); + struct statvfs buf; + char *path; + int err; + + memset(&buf, 0, sizeof(buf)); + pthread_rwlock_rdlock(&f->tree_lock); + if (!ino) { + err = -ENOMEM; + path = strdup("/"); + } else { + err = -ENOENT; + path = get_path(f, ino); + } + if (path) { + struct fuse_intr_data d; + fuse_prepare_interrupt(f, req, &d); + err = fuse_fs_statfs(f->fs, path, &buf); + fuse_finish_interrupt(f, req, &d); + free(path); + } + pthread_rwlock_unlock(&f->tree_lock); + + if (!err) + fuse_reply_statfs(req, &buf); + else + reply_err(req, err); } static void fuse_lib_setxattr(fuse_req_t req, fuse_ino_t ino, const char *name, - const char *value, size_t size, int flags) -{ - struct fuse *f = req_fuse_prepare(req); - char *path; - int err; - - err = -ENOENT; - pthread_rwlock_rdlock(&f->tree_lock); - path = get_path(f, ino); - if (path != NULL) { - struct fuse_intr_data d; - fuse_prepare_interrupt(f, req, &d); - err = fuse_fs_setxattr(f->fs, path, name, value, size, flags); - fuse_finish_interrupt(f, req, &d); - free(path); - } - pthread_rwlock_unlock(&f->tree_lock); - reply_err(req, err); + const char *value, size_t size, int flags) +{ + struct fuse *f = req_fuse_prepare(req); + char *path; + int err; + + err = -ENOENT; + pthread_rwlock_rdlock(&f->tree_lock); + path = get_path(f, ino); + if (path != NULL) { + struct fuse_intr_data d; + fuse_prepare_interrupt(f, req, &d); + err = fuse_fs_setxattr(f->fs, path, name, value, size, flags); + fuse_finish_interrupt(f, req, &d); + free(path); + } + pthread_rwlock_unlock(&f->tree_lock); + reply_err(req, err); } static int common_getxattr(struct fuse *f, fuse_req_t req, fuse_ino_t ino, - const char *name, char *value, size_t size) + const char *name, char *value, size_t size) { - int err; - char *path; + int err; + char *path; - err = -ENOENT; - pthread_rwlock_rdlock(&f->tree_lock); - path = get_path(f, ino); - if (path != NULL) { - struct fuse_intr_data d; - fuse_prepare_interrupt(f, req, &d); - err = fuse_fs_getxattr(f->fs, path, name, value, size); - fuse_finish_interrupt(f, req, &d); - free(path); - } - pthread_rwlock_unlock(&f->tree_lock); - return err; + err = -ENOENT; + pthread_rwlock_rdlock(&f->tree_lock); + path = get_path(f, ino); + if (path != NULL) { + struct fuse_intr_data d; + fuse_prepare_interrupt(f, req, &d); + err = fuse_fs_getxattr(f->fs, path, name, value, size); + fuse_finish_interrupt(f, req, &d); + free(path); + } + pthread_rwlock_unlock(&f->tree_lock); + return err; } static void fuse_lib_getxattr(fuse_req_t req, fuse_ino_t ino, const char *name, - size_t size) -{ - struct fuse *f = req_fuse_prepare(req); - int res; - - if (size) { - char *value = (char *) malloc(size); - if (value == NULL) { - reply_err(req, -ENOMEM); - return; - } - res = common_getxattr(f, req, ino, name, value, size); - if (res > 0) - fuse_reply_buf(req, value, res); - else - reply_err(req, res); - free(value); - } else { - res = common_getxattr(f, req, ino, name, NULL, 0); - if (res >= 0) - fuse_reply_xattr(req, res); - else - reply_err(req, res); - } + size_t size) +{ + struct fuse *f = req_fuse_prepare(req); + int res; + + if (size) { + char *value = (char *) malloc(size); + if (value == NULL) { + reply_err(req, -ENOMEM); + return; + } + res = common_getxattr(f, req, ino, name, value, size); + if (res > 0) + fuse_reply_buf(req, value, res); + else + reply_err(req, res); + free(value); + } else { + res = common_getxattr(f, req, ino, name, NULL, 0); + if (res >= 0) + fuse_reply_xattr(req, res); + else + reply_err(req, res); + } } static int common_listxattr(struct fuse *f, fuse_req_t req, fuse_ino_t ino, - char *list, size_t size) + char *list, size_t size) { - char *path; - int err; + char *path; + int err; - err = -ENOENT; - pthread_rwlock_rdlock(&f->tree_lock); - path = get_path(f, ino); - if (path != NULL) { - struct fuse_intr_data d; - fuse_prepare_interrupt(f, req, &d); - err = fuse_fs_listxattr(f->fs, path, list, size); - fuse_finish_interrupt(f, req, &d); - free(path); - } - pthread_rwlock_unlock(&f->tree_lock); - return err; + err = -ENOENT; + pthread_rwlock_rdlock(&f->tree_lock); + path = get_path(f, ino); + if (path != NULL) { + struct fuse_intr_data d; + fuse_prepare_interrupt(f, req, &d); + err = fuse_fs_listxattr(f->fs, path, list, size); + fuse_finish_interrupt(f, req, &d); + free(path); + } + pthread_rwlock_unlock(&f->tree_lock); + return err; } static void fuse_lib_listxattr(fuse_req_t req, fuse_ino_t ino, size_t size) { - struct fuse *f = req_fuse_prepare(req); - int res; - - if (size) { - char *list = (char *) malloc(size); - if (list == NULL) { - reply_err(req, -ENOMEM); - return; - } - res = common_listxattr(f, req, ino, list, size); - if (res > 0) - fuse_reply_buf(req, list, res); - else - reply_err(req, res); - free(list); - } else { - res = common_listxattr(f, req, ino, NULL, 0); - if (res >= 0) - fuse_reply_xattr(req, res); - else - reply_err(req, res); - } + struct fuse *f = req_fuse_prepare(req); + int res; + + if (size) { + char *list = (char *) malloc(size); + if (list == NULL) { + reply_err(req, -ENOMEM); + return; + } + res = common_listxattr(f, req, ino, list, size); + if (res > 0) + fuse_reply_buf(req, list, res); + else + reply_err(req, res); + free(list); + } else { + res = common_listxattr(f, req, ino, NULL, 0); + if (res >= 0) + fuse_reply_xattr(req, res); + else + reply_err(req, res); + } } static void fuse_lib_removexattr(fuse_req_t req, fuse_ino_t ino, - const char *name) -{ - struct fuse *f = req_fuse_prepare(req); - char *path; - int err; - - err = -ENOENT; - pthread_rwlock_rdlock(&f->tree_lock); - path = get_path(f, ino); - if (path != NULL) { - struct fuse_intr_data d; - fuse_prepare_interrupt(f, req, &d); - err = fuse_fs_removexattr(f->fs, path, name); - fuse_finish_interrupt(f, req, &d); - free(path); - } - pthread_rwlock_unlock(&f->tree_lock); - reply_err(req, err); + const char *name) +{ + struct fuse *f = req_fuse_prepare(req); + char *path; + int err; + + err = -ENOENT; + pthread_rwlock_rdlock(&f->tree_lock); + path = get_path(f, ino); + if (path != NULL) { + struct fuse_intr_data d; + fuse_prepare_interrupt(f, req, &d); + err = fuse_fs_removexattr(f->fs, path, name); + fuse_finish_interrupt(f, req, &d); + free(path); + } + pthread_rwlock_unlock(&f->tree_lock); + reply_err(req, err); } static struct lock *locks_conflict(struct node *node, const struct lock *lock) { - struct lock *l; + struct lock *l; - for (l = node->locks; l; l = l->next) - if (l->owner != lock->owner && - lock->start <= l->end && l->start <= lock->end && - (l->type == F_WRLCK || lock->type == F_WRLCK)) - break; + for (l = node->locks; l; l = l->next) + if (l->owner != lock->owner && + lock->start <= l->end && l->start <= lock->end && + (l->type == F_WRLCK || lock->type == F_WRLCK)) + break; - return l; + return l; } static void delete_lock(struct lock **lockp) { - struct lock *l = *lockp; - *lockp = l->next; - free(l); + struct lock *l = *lockp; + *lockp = l->next; + free(l); } static void insert_lock(struct lock **pos, struct lock *lock) { - lock->next = *pos; - *pos = lock; + lock->next = *pos; + *pos = lock; } static int locks_insert(struct node *node, struct lock *lock) { - struct lock **lp; - struct lock *newl1 = NULL; - struct lock *newl2 = NULL; - - if (lock->type != F_UNLCK || lock->start != 0 || lock->end != OFFSET_MAX) { - newl1 = malloc(sizeof(struct lock)); - newl2 = malloc(sizeof(struct lock)); - - if (!newl1 || !newl2) { - free(newl1); - free(newl2); - return -ENOLCK; - } - } - - for (lp = &node->locks; *lp;) { - struct lock *l = *lp; - if (l->owner != lock->owner) - goto skip; - - if (lock->type == l->type) { - if (l->end < lock->start - 1) - goto skip; - if (lock->end < l->start - 1) - break; - if (l->start <= lock->start && lock->end <= l->end) - goto out; - if (l->start < lock->start) - lock->start = l->start; - if (lock->end < l->end) - lock->end = l->end; - goto delete; - } else { - if (l->end < lock->start) - goto skip; - if (lock->end < l->start) - break; - if (lock->start <= l->start && l->end <= lock->end) - goto delete; - if (l->end <= lock->end) { - l->end = lock->start - 1; - goto skip; - } - if (lock->start <= l->start) { - l->start = lock->end + 1; - break; - } - *newl2 = *l; - newl2->start = lock->end + 1; - l->end = lock->start - 1; - insert_lock(&l->next, newl2); - newl2 = NULL; - } - skip: - lp = &l->next; - continue; - - delete: - delete_lock(lp); - } - if (lock->type != F_UNLCK) { - *newl1 = *lock; - insert_lock(lp, newl1); - newl1 = NULL; - } + struct lock **lp; + struct lock *newl1 = NULL; + struct lock *newl2 = NULL; + + if (lock->type != F_UNLCK || lock->start != 0 || + lock->end != OFFSET_MAX) { + newl1 = malloc(sizeof(struct lock)); + newl2 = malloc(sizeof(struct lock)); + + if (!newl1 || !newl2) { + free(newl1); + free(newl2); + return -ENOLCK; + } + } + + for (lp = &node->locks; *lp;) { + struct lock *l = *lp; + if (l->owner != lock->owner) + goto skip; + + if (lock->type == l->type) { + if (l->end < lock->start - 1) + goto skip; + if (lock->end < l->start - 1) + break; + if (l->start <= lock->start && lock->end <= l->end) + goto out; + if (l->start < lock->start) + lock->start = l->start; + if (lock->end < l->end) + lock->end = l->end; + goto delete; + } else { + if (l->end < lock->start) + goto skip; + if (lock->end < l->start) + break; + if (lock->start <= l->start && l->end <= lock->end) + goto delete; + if (l->end <= lock->end) { + l->end = lock->start - 1; + goto skip; + } + if (lock->start <= l->start) { + l->start = lock->end + 1; + break; + } + *newl2 = *l; + newl2->start = lock->end + 1; + l->end = lock->start - 1; + insert_lock(&l->next, newl2); + newl2 = NULL; + } + skip: + lp = &l->next; + continue; + + delete: + delete_lock(lp); + } + if (lock->type != F_UNLCK) { + *newl1 = *lock; + insert_lock(lp, newl1); + newl1 = NULL; + } out: - free(newl1); - free(newl2); - return 0; + free(newl1); + free(newl2); + return 0; } static void flock_to_lock(struct flock *flock, struct lock *lock) { - memset(lock, 0, sizeof(struct lock)); - lock->type = flock->l_type; - lock->start = flock->l_start; - lock->end = flock->l_len ? flock->l_start + flock->l_len - 1 : OFFSET_MAX; - lock->pid = flock->l_pid; + memset(lock, 0, sizeof(struct lock)); + lock->type = flock->l_type; + lock->start = flock->l_start; + lock->end = + flock->l_len ? flock->l_start + flock->l_len - 1 : OFFSET_MAX; + lock->pid = flock->l_pid; } static void lock_to_flock(struct lock *lock, struct flock *flock) { - flock->l_type = lock->type; - flock->l_start = lock->start; - flock->l_len = (lock->end == OFFSET_MAX) ? 0 : lock->end - lock->start + 1; - flock->l_pid = lock->pid; + flock->l_type = lock->type; + flock->l_start = lock->start; + flock->l_len = + (lock->end == OFFSET_MAX) ? 0 : lock->end - lock->start + 1; + flock->l_pid = lock->pid; } static int fuse_flush_common(struct fuse *f, fuse_req_t req, fuse_ino_t ino, - const char *path, struct fuse_file_info *fi) -{ - struct fuse_intr_data d; - struct flock lock; - struct lock l; - int err; - int errlock; - - fuse_prepare_interrupt(f, req, &d); - memset(&lock, 0, sizeof(lock)); - lock.l_type = F_UNLCK; - lock.l_whence = SEEK_SET; - err = fuse_fs_flush(f->fs, path, fi); - errlock = fuse_fs_lock(f->fs, path, fi, F_SETLK, &lock); - fuse_finish_interrupt(f, req, &d); - - if (errlock != -ENOSYS) { - flock_to_lock(&lock, &l); - l.owner = fi->lock_owner; - pthread_mutex_lock(&f->lock); - locks_insert(get_node(f, ino), &l); - pthread_mutex_unlock(&f->lock); - - /* if op.lock() is defined FLUSH is needed regardless of op.flush() */ - if (err == -ENOSYS) - err = 0; - } - return err; + const char *path, struct fuse_file_info *fi) +{ + struct fuse_intr_data d; + struct flock lock; + struct lock l; + int err; + int errlock; + + fuse_prepare_interrupt(f, req, &d); + memset(&lock, 0, sizeof(lock)); + lock.l_type = F_UNLCK; + lock.l_whence = SEEK_SET; + err = fuse_fs_flush(f->fs, path, fi); + errlock = fuse_fs_lock(f->fs, path, fi, F_SETLK, &lock); + fuse_finish_interrupt(f, req, &d); + + if (errlock != -ENOSYS) { + flock_to_lock(&lock, &l); + l.owner = fi->lock_owner; + pthread_mutex_lock(&f->lock); + locks_insert(get_node(f, ino), &l); + pthread_mutex_unlock(&f->lock); + + /* if op.lock() is defined FLUSH is needed regardless + of op.flush() */ + if (err == -ENOSYS) + err = 0; + } + return err; } static void fuse_lib_release(fuse_req_t req, fuse_ino_t ino, - struct fuse_file_info *fi) + struct fuse_file_info *fi) { - struct fuse *f = req_fuse_prepare(req); - struct fuse_intr_data d; - char *path; - int err = 0; + struct fuse *f = req_fuse_prepare(req); + struct fuse_intr_data d; + char *path; + int err = 0; - pthread_rwlock_rdlock(&f->tree_lock); - path = get_path(f, ino); - if (f->conf.debug) - fprintf(stderr, "RELEASE%s[%llu] flags: 0x%x\n", - fi->flush ? "+FLUSH" : "", - (unsigned long long) fi->fh, fi->flags); + pthread_rwlock_rdlock(&f->tree_lock); + path = get_path(f, ino); + if (f->conf.debug) + fprintf(stderr, "RELEASE%s[%llu] flags: 0x%x\n", + fi->flush ? "+FLUSH" : "", + (unsigned long long) fi->fh, fi->flags); - if (fi->flush) { - err = fuse_flush_common(f, req, ino, path, fi); - if (err == -ENOSYS) - err = 0; - } + if (fi->flush) { + err = fuse_flush_common(f, req, ino, path, fi); + if (err == -ENOSYS) + err = 0; + } - fuse_prepare_interrupt(f, req, &d); - fuse_do_release(f, ino, path, fi); - fuse_finish_interrupt(f, req, &d); - free(path); - pthread_rwlock_unlock(&f->tree_lock); + fuse_prepare_interrupt(f, req, &d); + fuse_do_release(f, ino, path, fi); + fuse_finish_interrupt(f, req, &d); + free(path); + pthread_rwlock_unlock(&f->tree_lock); - reply_err(req, err); + reply_err(req, err); } static void fuse_lib_flush(fuse_req_t req, fuse_ino_t ino, - struct fuse_file_info *fi) + struct fuse_file_info *fi) { - struct fuse *f = req_fuse_prepare(req); - char *path; - int err; + struct fuse *f = req_fuse_prepare(req); + char *path; + int err; - pthread_rwlock_rdlock(&f->tree_lock); - path = get_path(f, ino); - if (path && f->conf.debug) - fprintf(stderr, "FLUSH[%llu]\n", (unsigned long long) fi->fh); - err = fuse_flush_common(f, req, ino, path, fi); - free(path); - pthread_rwlock_unlock(&f->tree_lock); - reply_err(req, err); + pthread_rwlock_rdlock(&f->tree_lock); + path = get_path(f, ino); + if (path && f->conf.debug) + fprintf(stderr, "FLUSH[%llu]\n", (unsigned long long) fi->fh); + err = fuse_flush_common(f, req, ino, path, fi); + free(path); + pthread_rwlock_unlock(&f->tree_lock); + reply_err(req, err); } static int fuse_lock_common(fuse_req_t req, fuse_ino_t ino, - struct fuse_file_info *fi, struct flock *lock, - int cmd) -{ - struct fuse *f = req_fuse_prepare(req); - char *path; - int err; - - err = -ENOENT; - pthread_rwlock_rdlock(&f->tree_lock); - path = get_path(f, ino); - if (path != NULL) { - struct fuse_intr_data d; - fuse_prepare_interrupt(f, req, &d); - err = fuse_fs_lock(f->fs, path, fi, cmd, lock); - fuse_finish_interrupt(f, req, &d); - free(path); - } - pthread_rwlock_unlock(&f->tree_lock); - return err; + struct fuse_file_info *fi, struct flock *lock, + int cmd) +{ + struct fuse *f = req_fuse_prepare(req); + char *path; + int err; + + err = -ENOENT; + pthread_rwlock_rdlock(&f->tree_lock); + path = get_path(f, ino); + if (path != NULL) { + struct fuse_intr_data d; + fuse_prepare_interrupt(f, req, &d); + err = fuse_fs_lock(f->fs, path, fi, cmd, lock); + fuse_finish_interrupt(f, req, &d); + free(path); + } + pthread_rwlock_unlock(&f->tree_lock); + return err; } static void fuse_lib_getlk(fuse_req_t req, fuse_ino_t ino, - struct fuse_file_info *fi, struct flock *lock) -{ - int err; - struct lock l; - struct lock *conflict; - struct fuse *f = req_fuse(req); - - flock_to_lock(lock, &l); - l.owner = fi->lock_owner; - pthread_mutex_lock(&f->lock); - conflict = locks_conflict(get_node(f, ino), &l); - if (conflict) - lock_to_flock(conflict, lock); - pthread_mutex_unlock(&f->lock); - if (!conflict) - err = fuse_lock_common(req, ino, fi, lock, F_GETLK); - else - err = 0; - - if (!err) - fuse_reply_lock(req, lock); - else - reply_err(req, err); + struct fuse_file_info *fi, struct flock *lock) +{ + int err; + struct lock l; + struct lock *conflict; + struct fuse *f = req_fuse(req); + + flock_to_lock(lock, &l); + l.owner = fi->lock_owner; + pthread_mutex_lock(&f->lock); + conflict = locks_conflict(get_node(f, ino), &l); + if (conflict) + lock_to_flock(conflict, lock); + pthread_mutex_unlock(&f->lock); + if (!conflict) + err = fuse_lock_common(req, ino, fi, lock, F_GETLK); + else + err = 0; + + if (!err) + fuse_reply_lock(req, lock); + else + reply_err(req, err); } static void fuse_lib_setlk(fuse_req_t req, fuse_ino_t ino, - struct fuse_file_info *fi, struct flock *lock, - int sleep) -{ - int err = fuse_lock_common(req, ino, fi, lock, sleep ? F_SETLKW : F_SETLK); - if (!err) { - struct fuse *f = req_fuse(req); - struct lock l; - flock_to_lock(lock, &l); - l.owner = fi->lock_owner; - pthread_mutex_lock(&f->lock); - locks_insert(get_node(f, ino), &l); - pthread_mutex_unlock(&f->lock); - } - reply_err(req, err); + struct fuse_file_info *fi, struct flock *lock, + int sleep) +{ + int err = fuse_lock_common(req, ino, fi, lock, + sleep ? F_SETLKW : F_SETLK); + if (!err) { + struct fuse *f = req_fuse(req); + struct lock l; + flock_to_lock(lock, &l); + l.owner = fi->lock_owner; + pthread_mutex_lock(&f->lock); + locks_insert(get_node(f, ino), &l); + pthread_mutex_unlock(&f->lock); + } + reply_err(req, err); } static void fuse_lib_bmap(fuse_req_t req, fuse_ino_t ino, size_t blocksize, - uint64_t idx) -{ - struct fuse *f = req_fuse_prepare(req); - struct fuse_intr_data d; - char *path; - int err; - - err = -ENOENT; - pthread_rwlock_rdlock(&f->tree_lock); - path = get_path(f, ino); - if (path != NULL) { - fuse_prepare_interrupt(f, req, &d); - err = fuse_fs_bmap(f->fs, path, blocksize, &idx); - fuse_finish_interrupt(f, req, &d); - free(path); - } - pthread_rwlock_unlock(&f->tree_lock); - if (!err) - fuse_reply_bmap(req, idx); - else - reply_err(req, err); + uint64_t idx) +{ + struct fuse *f = req_fuse_prepare(req); + struct fuse_intr_data d; + char *path; + int err; + + err = -ENOENT; + pthread_rwlock_rdlock(&f->tree_lock); + path = get_path(f, ino); + if (path != NULL) { + fuse_prepare_interrupt(f, req, &d); + err = fuse_fs_bmap(f->fs, path, blocksize, &idx); + fuse_finish_interrupt(f, req, &d); + free(path); + } + pthread_rwlock_unlock(&f->tree_lock); + if (!err) + fuse_reply_bmap(req, idx); + else + reply_err(req, err); } static struct fuse_lowlevel_ops fuse_path_ops = { - .init = fuse_lib_init, - .destroy = fuse_lib_destroy, - .lookup = fuse_lib_lookup, - .forget = fuse_lib_forget, - .getattr = fuse_lib_getattr, - .setattr = fuse_lib_setattr, - .access = fuse_lib_access, - .readlink = fuse_lib_readlink, - .mknod = fuse_lib_mknod, - .mkdir = fuse_lib_mkdir, - .unlink = fuse_lib_unlink, - .rmdir = fuse_lib_rmdir, - .symlink = fuse_lib_symlink, - .rename = fuse_lib_rename, - .link = fuse_lib_link, - .create = fuse_lib_create, - .open = fuse_lib_open, - .read = fuse_lib_read, - .write = fuse_lib_write, - .flush = fuse_lib_flush, - .release = fuse_lib_release, - .fsync = fuse_lib_fsync, - .opendir = fuse_lib_opendir, - .readdir = fuse_lib_readdir, - .releasedir = fuse_lib_releasedir, - .fsyncdir = fuse_lib_fsyncdir, - .statfs = fuse_lib_statfs, - .setxattr = fuse_lib_setxattr, - .getxattr = fuse_lib_getxattr, - .listxattr = fuse_lib_listxattr, - .removexattr = fuse_lib_removexattr, - .getlk = fuse_lib_getlk, - .setlk = fuse_lib_setlk, - .bmap = fuse_lib_bmap, + .init = fuse_lib_init, + .destroy = fuse_lib_destroy, + .lookup = fuse_lib_lookup, + .forget = fuse_lib_forget, + .getattr = fuse_lib_getattr, + .setattr = fuse_lib_setattr, + .access = fuse_lib_access, + .readlink = fuse_lib_readlink, + .mknod = fuse_lib_mknod, + .mkdir = fuse_lib_mkdir, + .unlink = fuse_lib_unlink, + .rmdir = fuse_lib_rmdir, + .symlink = fuse_lib_symlink, + .rename = fuse_lib_rename, + .link = fuse_lib_link, + .create = fuse_lib_create, + .open = fuse_lib_open, + .read = fuse_lib_read, + .write = fuse_lib_write, + .flush = fuse_lib_flush, + .release = fuse_lib_release, + .fsync = fuse_lib_fsync, + .opendir = fuse_lib_opendir, + .readdir = fuse_lib_readdir, + .releasedir = fuse_lib_releasedir, + .fsyncdir = fuse_lib_fsyncdir, + .statfs = fuse_lib_statfs, + .setxattr = fuse_lib_setxattr, + .getxattr = fuse_lib_getxattr, + .listxattr = fuse_lib_listxattr, + .removexattr = fuse_lib_removexattr, + .getlk = fuse_lib_getlk, + .setlk = fuse_lib_setlk, + .bmap = fuse_lib_bmap, }; static void free_cmd(struct fuse_cmd *cmd) { - free(cmd->buf); - free(cmd); + free(cmd->buf); + free(cmd); } void fuse_process_cmd(struct fuse *f, struct fuse_cmd *cmd) { - fuse_session_process(f->se, cmd->buf, cmd->buflen, cmd->ch); - free_cmd(cmd); + fuse_session_process(f->se, cmd->buf, cmd->buflen, cmd->ch); + free_cmd(cmd); } int fuse_exited(struct fuse *f) { - return fuse_session_exited(f->se); + return fuse_session_exited(f->se); } struct fuse_session *fuse_get_session(struct fuse *f) { - return f->se; + return f->se; } static struct fuse_cmd *fuse_alloc_cmd(size_t bufsize) { - struct fuse_cmd *cmd = (struct fuse_cmd *) malloc(sizeof(*cmd)); - if (cmd == NULL) { - fprintf(stderr, "fuse: failed to allocate cmd\n"); - return NULL; - } - cmd->buf = (char *) malloc(bufsize); - if (cmd->buf == NULL) { - fprintf(stderr, "fuse: failed to allocate read buffer\n"); - free(cmd); - return NULL; - } - return cmd; + struct fuse_cmd *cmd = (struct fuse_cmd *) malloc(sizeof(*cmd)); + if (cmd == NULL) { + fprintf(stderr, "fuse: failed to allocate cmd\n"); + return NULL; + } + cmd->buf = (char *) malloc(bufsize); + if (cmd->buf == NULL) { + fprintf(stderr, "fuse: failed to allocate read buffer\n"); + free(cmd); + return NULL; + } + return cmd; } struct fuse_cmd *fuse_read_cmd(struct fuse *f) { - struct fuse_chan *ch = fuse_session_next_chan(f->se, NULL); - size_t bufsize = fuse_chan_bufsize(ch); - struct fuse_cmd *cmd = fuse_alloc_cmd(bufsize); - if (cmd != NULL) { - int res = fuse_chan_recv(&ch, cmd->buf, bufsize); - if (res <= 0) { - free_cmd(cmd); - if (res < 0 && res != -EINTR && res != -EAGAIN) - fuse_exit(f); - return NULL; - } - cmd->buflen = res; - cmd->ch = ch; - } - return cmd; + struct fuse_chan *ch = fuse_session_next_chan(f->se, NULL); + size_t bufsize = fuse_chan_bufsize(ch); + struct fuse_cmd *cmd = fuse_alloc_cmd(bufsize); + if (cmd != NULL) { + int res = fuse_chan_recv(&ch, cmd->buf, bufsize); + if (res <= 0) { + free_cmd(cmd); + if (res < 0 && res != -EINTR && res != -EAGAIN) + fuse_exit(f); + return NULL; + } + cmd->buflen = res; + cmd->ch = ch; + } + return cmd; } int fuse_loop(struct fuse *f) { - if (f) - return fuse_session_loop(f->se); - else - return -1; + if (f) + return fuse_session_loop(f->se); + else + return -1; } int fuse_invalidate(struct fuse *f, const char *path) { - (void) f; - (void) path; - return -EINVAL; + (void) f; + (void) path; + return -EINVAL; } void fuse_exit(struct fuse *f) { - fuse_session_exit(f->se); + fuse_session_exit(f->se); } struct fuse_context *fuse_get_context(void) { - return &fuse_get_context_internal()->ctx; + return &fuse_get_context_internal()->ctx; } int fuse_interrupted(void) { - return fuse_req_interrupted(fuse_get_context_internal()->req); + return fuse_req_interrupted(fuse_get_context_internal()->req); } void fuse_set_getcontext_func(struct fuse_context *(*func)(void)) { - (void) func; - /* no-op */ + (void) func; + /* no-op */ } enum { - KEY_HELP, + KEY_HELP, }; #define FUSE_LIB_OPT(t, p, v) { t, offsetof(struct fuse_config, p), v } static const struct fuse_opt fuse_lib_opts[] = { - FUSE_OPT_KEY("-h", KEY_HELP), - FUSE_OPT_KEY("--help", KEY_HELP), - FUSE_OPT_KEY("debug", FUSE_OPT_KEY_KEEP), - FUSE_OPT_KEY("-d", FUSE_OPT_KEY_KEEP), - FUSE_LIB_OPT("debug", debug, 1), - FUSE_LIB_OPT("-d", debug, 1), - FUSE_LIB_OPT("hard_remove", hard_remove, 1), - FUSE_LIB_OPT("use_ino", use_ino, 1), - FUSE_LIB_OPT("readdir_ino", readdir_ino, 1), - FUSE_LIB_OPT("direct_io", direct_io, 1), - FUSE_LIB_OPT("kernel_cache", kernel_cache, 1), - FUSE_LIB_OPT("auto_cache", auto_cache, 1), - FUSE_LIB_OPT("noauto_cache", auto_cache, 0), - FUSE_LIB_OPT("umask=", set_mode, 1), - FUSE_LIB_OPT("umask=%o", umask, 0), - FUSE_LIB_OPT("uid=", set_uid, 1), - FUSE_LIB_OPT("uid=%d", uid, 0), - FUSE_LIB_OPT("gid=", set_gid, 1), - FUSE_LIB_OPT("gid=%d", gid, 0), - FUSE_LIB_OPT("entry_timeout=%lf", entry_timeout, 0), - FUSE_LIB_OPT("attr_timeout=%lf", attr_timeout, 0), - FUSE_LIB_OPT("ac_attr_timeout=%lf", ac_attr_timeout, 0), - FUSE_LIB_OPT("ac_attr_timeout=", ac_attr_timeout_set, 1), - FUSE_LIB_OPT("negative_timeout=%lf", negative_timeout, 0), - FUSE_LIB_OPT("intr", intr, 1), - FUSE_LIB_OPT("intr_signal=%d", intr_signal, 0), - FUSE_LIB_OPT("modules=%s", modules, 0), - FUSE_OPT_END + FUSE_OPT_KEY("-h", KEY_HELP), + FUSE_OPT_KEY("--help", KEY_HELP), + FUSE_OPT_KEY("debug", FUSE_OPT_KEY_KEEP), + FUSE_OPT_KEY("-d", FUSE_OPT_KEY_KEEP), + FUSE_LIB_OPT("debug", debug, 1), + FUSE_LIB_OPT("-d", debug, 1), + FUSE_LIB_OPT("hard_remove", hard_remove, 1), + FUSE_LIB_OPT("use_ino", use_ino, 1), + FUSE_LIB_OPT("readdir_ino", readdir_ino, 1), + FUSE_LIB_OPT("direct_io", direct_io, 1), + FUSE_LIB_OPT("kernel_cache", kernel_cache, 1), + FUSE_LIB_OPT("auto_cache", auto_cache, 1), + FUSE_LIB_OPT("noauto_cache", auto_cache, 0), + FUSE_LIB_OPT("umask=", set_mode, 1), + FUSE_LIB_OPT("umask=%o", umask, 0), + FUSE_LIB_OPT("uid=", set_uid, 1), + FUSE_LIB_OPT("uid=%d", uid, 0), + FUSE_LIB_OPT("gid=", set_gid, 1), + FUSE_LIB_OPT("gid=%d", gid, 0), + FUSE_LIB_OPT("entry_timeout=%lf", entry_timeout, 0), + FUSE_LIB_OPT("attr_timeout=%lf", attr_timeout, 0), + FUSE_LIB_OPT("ac_attr_timeout=%lf", ac_attr_timeout, 0), + FUSE_LIB_OPT("ac_attr_timeout=", ac_attr_timeout_set, 1), + FUSE_LIB_OPT("negative_timeout=%lf", negative_timeout, 0), + FUSE_LIB_OPT("intr", intr, 1), + FUSE_LIB_OPT("intr_signal=%d", intr_signal, 0), + FUSE_LIB_OPT("modules=%s", modules, 0), + FUSE_OPT_END }; static void fuse_lib_help(void) { - fprintf(stderr, -" -o hard_remove immediate removal (don't hide files)\n" -" -o use_ino let filesystem set inode numbers\n" -" -o readdir_ino try to fill in d_ino in readdir\n" -" -o direct_io use direct I/O\n" -" -o kernel_cache cache files in kernel\n" -" -o [no]auto_cache enable caching based on modification times\n" -" -o umask=M set file permissions (octal)\n" -" -o uid=N set file owner\n" -" -o gid=N set file group\n" -" -o entry_timeout=T cache timeout for names (1.0s)\n" + fprintf(stderr, +" -o hard_remove immediate removal (don't hide files)\n" +" -o use_ino let filesystem set inode numbers\n" +" -o readdir_ino try to fill in d_ino in readdir\n" +" -o direct_io use direct I/O\n" +" -o kernel_cache cache files in kernel\n" +" -o [no]auto_cache enable caching based on modification times\n" +" -o umask=M set file permissions (octal)\n" +" -o uid=N set file owner\n" +" -o gid=N set file group\n" +" -o entry_timeout=T cache timeout for names (1.0s)\n" " -o negative_timeout=T cache timeout for deleted names (0.0s)\n" -" -o attr_timeout=T cache timeout for attributes (1.0s)\n" +" -o attr_timeout=T cache timeout for attributes (1.0s)\n" " -o ac_attr_timeout=T auto cache timeout for attributes (attr_timeout)\n" -" -o intr allow requests to be interrupted\n" -" -o intr_signal=NUM signal to send on interrupt (%i)\n" +" -o intr allow requests to be interrupted\n" +" -o intr_signal=NUM signal to send on interrupt (%i)\n" " -o modules=M1[:M2...] names of modules to push onto filesystem stack\n" "\n", FUSE_DEFAULT_INTR_SIGNAL); } static void fuse_lib_help_modules(void) { - struct fuse_module *m; - fprintf(stderr, "\nModule options:\n"); - pthread_mutex_lock(&fuse_context_lock); - for (m = fuse_modules; m; m = m->next) { - struct fuse_fs *fs = NULL; - struct fuse_fs *newfs; - struct fuse_args args = FUSE_ARGS_INIT(0, NULL); - if (fuse_opt_add_arg(&args, "") != -1 && - fuse_opt_add_arg(&args, "-h") != -1) { - fprintf(stderr, "\n[%s]\n", m->name); - newfs = m->factory(&args, &fs); - assert(newfs == NULL); - } - fuse_opt_free_args(&args); - } - pthread_mutex_unlock(&fuse_context_lock); + struct fuse_module *m; + fprintf(stderr, "\nModule options:\n"); + pthread_mutex_lock(&fuse_context_lock); + for (m = fuse_modules; m; m = m->next) { + struct fuse_fs *fs = NULL; + struct fuse_fs *newfs; + struct fuse_args args = FUSE_ARGS_INIT(0, NULL); + if (fuse_opt_add_arg(&args, "") != -1 && + fuse_opt_add_arg(&args, "-h") != -1) { + fprintf(stderr, "\n[%s]\n", m->name); + newfs = m->factory(&args, &fs); + assert(newfs == NULL); + } + fuse_opt_free_args(&args); + } + pthread_mutex_unlock(&fuse_context_lock); } static int fuse_lib_opt_proc(void *data, const char *arg, int key, - struct fuse_args *outargs) + struct fuse_args *outargs) { - (void) arg; (void) outargs; + (void) arg; (void) outargs; - if (key == KEY_HELP) { - struct fuse_config *conf = (struct fuse_config *) data; - fuse_lib_help(); - conf->help = 1; - } + if (key == KEY_HELP) { + struct fuse_config *conf = (struct fuse_config *) data; + fuse_lib_help(); + conf->help = 1; + } - return 1; + return 1; } int fuse_is_lib_option(const char *opt) { - return fuse_lowlevel_is_lib_option(opt) || - fuse_opt_match(fuse_lib_opts, opt); + return fuse_lowlevel_is_lib_option(opt) || + fuse_opt_match(fuse_lib_opts, opt); } static int fuse_init_intr_signal(int signum, int *installed) { - struct sigaction old_sa; + struct sigaction old_sa; - if (sigaction(signum, NULL, &old_sa) == -1) { - perror("fuse: cannot get old signal handler"); - return -1; - } + if (sigaction(signum, NULL, &old_sa) == -1) { + perror("fuse: cannot get old signal handler"); + return -1; + } - if (old_sa.sa_handler == SIG_DFL) { - struct sigaction sa; + if (old_sa.sa_handler == SIG_DFL) { + struct sigaction sa; - memset(&sa, 0, sizeof(struct sigaction)); - sa.sa_handler = fuse_intr_sighandler; - sigemptyset(&sa.sa_mask); + memset(&sa, 0, sizeof(struct sigaction)); + sa.sa_handler = fuse_intr_sighandler; + sigemptyset(&sa.sa_mask); - if (sigaction(signum, &sa, NULL) == -1) { - perror("fuse: cannot set interrupt signal handler"); - return -1; - } - *installed = 1; - } - return 0; + if (sigaction(signum, &sa, NULL) == -1) { + perror("fuse: cannot set interrupt signal handler"); + return -1; + } + *installed = 1; + } + return 0; } static void fuse_restore_intr_signal(int signum) { - struct sigaction sa; + struct sigaction sa; - memset(&sa, 0, sizeof(struct sigaction)); - sa.sa_handler = SIG_DFL; - sigaction(signum, &sa, NULL); + memset(&sa, 0, sizeof(struct sigaction)); + sa.sa_handler = SIG_DFL; + sigaction(signum, &sa, NULL); } static int fuse_push_module(struct fuse *f, const char *module, - struct fuse_args *args) + struct fuse_args *args) { - struct fuse_fs *fs[2] = { f->fs, NULL }; - struct fuse_fs *newfs; - struct fuse_module *m = fuse_get_module(module); + struct fuse_fs *fs[2] = { f->fs, NULL }; + struct fuse_fs *newfs; + struct fuse_module *m = fuse_get_module(module); - if (!m) - return -1; + if (!m) + return -1; - newfs = m->factory(args, fs); - if (!newfs) { - fuse_put_module(m); - return -1; - } - newfs->m = m; - f->fs = newfs; - return 0; + newfs = m->factory(args, fs); + if (!newfs) { + fuse_put_module(m); + return -1; + } + newfs->m = m; + f->fs = newfs; + return 0; } struct fuse_fs *fuse_fs_new(const struct fuse_operations *op, size_t op_size, - void *user_data) + void *user_data) { - struct fuse_fs *fs; + struct fuse_fs *fs; - if (sizeof(struct fuse_operations) < op_size) { - fprintf(stderr, "fuse: warning: library too old, some operations may not not work\n"); - op_size = sizeof(struct fuse_operations); - } + if (sizeof(struct fuse_operations) < op_size) { + fprintf(stderr, "fuse: warning: library too old, some operations may not not work\n"); + op_size = sizeof(struct fuse_operations); + } - fs = (struct fuse_fs *) calloc(1, sizeof(struct fuse_fs)); - if (!fs) { - fprintf(stderr, "fuse: failed to allocate fuse_fs object\n"); - return NULL; - } + fs = (struct fuse_fs *) calloc(1, sizeof(struct fuse_fs)); + if (!fs) { + fprintf(stderr, "fuse: failed to allocate fuse_fs object\n"); + return NULL; + } - fs->user_data = user_data; - if (op) - memcpy(&fs->op, op, op_size); - return fs; + fs->user_data = user_data; + if (op) + memcpy(&fs->op, op, op_size); + return fs; } struct fuse *fuse_new_common(struct fuse_chan *ch, struct fuse_args *args, - const struct fuse_operations *op, - size_t op_size, void *user_data, int compat) -{ - struct fuse *f; - struct node *root; - struct fuse_fs *fs; - struct fuse_lowlevel_ops llop = fuse_path_ops; - - if (fuse_create_context_key() == -1) - goto out; - - f = (struct fuse *) calloc(1, sizeof(struct fuse)); - if (f == NULL) { - fprintf(stderr, "fuse: failed to allocate fuse object\n"); - goto out_delete_context_key; - } - - fs = fuse_fs_new(op, op_size, user_data); - if (!fs) - goto out_free; - - fs->compat = compat; - f->fs = fs; - - /* Oh f**k, this is ugly! */ - if (!fs->op.lock) { - llop.getlk = NULL; - llop.setlk = NULL; - } - - f->conf.entry_timeout = 1.0; - f->conf.attr_timeout = 1.0; - f->conf.negative_timeout = 0.0; - f->conf.intr_signal = FUSE_DEFAULT_INTR_SIGNAL; - - if (fuse_opt_parse(args, &f->conf, fuse_lib_opts, fuse_lib_opt_proc) == -1) - goto out_free_fs; - - if (f->conf.modules) { - char *module; - char *next; - - for (module = f->conf.modules; module; module = next) { - char *p; - for (p = module; *p && *p != ':'; p++); - next = *p ? p + 1 : NULL; - *p = '\0'; - if (module[0] && fuse_push_module(f, module, args) == -1) - goto out_free_fs; - } - } - - if (!f->conf.ac_attr_timeout_set) - f->conf.ac_attr_timeout = f->conf.attr_timeout; + const struct fuse_operations *op, + size_t op_size, void *user_data, int compat) +{ + struct fuse *f; + struct node *root; + struct fuse_fs *fs; + struct fuse_lowlevel_ops llop = fuse_path_ops; + + if (fuse_create_context_key() == -1) + goto out; + + f = (struct fuse *) calloc(1, sizeof(struct fuse)); + if (f == NULL) { + fprintf(stderr, "fuse: failed to allocate fuse object\n"); + goto out_delete_context_key; + } + + fs = fuse_fs_new(op, op_size, user_data); + if (!fs) + goto out_free; + + fs->compat = compat; + f->fs = fs; + + /* Oh f**k, this is ugly! */ + if (!fs->op.lock) { + llop.getlk = NULL; + llop.setlk = NULL; + } + + f->conf.entry_timeout = 1.0; + f->conf.attr_timeout = 1.0; + f->conf.negative_timeout = 0.0; + f->conf.intr_signal = FUSE_DEFAULT_INTR_SIGNAL; + + if (fuse_opt_parse(args, &f->conf, fuse_lib_opts, + fuse_lib_opt_proc) == -1) + goto out_free_fs; + + if (f->conf.modules) { + char *module; + char *next; + + for (module = f->conf.modules; module; module = next) { + char *p; + for (p = module; *p && *p != ':'; p++); + next = *p ? p + 1 : NULL; + *p = '\0'; + if (module[0] && + fuse_push_module(f, module, args) == -1) + goto out_free_fs; + } + } + + if (!f->conf.ac_attr_timeout_set) + f->conf.ac_attr_timeout = f->conf.attr_timeout; #ifdef __FreeBSD__ - /* - * In FreeBSD, we always use these settings as inode numbers are needed to - * make getcwd(3) work. - */ - f->conf.readdir_ino = 1; + /* + * In FreeBSD, we always use these settings as inode numbers + * are needed to make getcwd(3) work. + */ + f->conf.readdir_ino = 1; #endif - if (compat && compat <= 25) { - if (fuse_sync_compat_args(args) == -1) - goto out_free_fs; - } - - f->se = fuse_lowlevel_new_common(args, &llop, sizeof(llop), f); - if (f->se == NULL) { - if (f->conf.help) - fuse_lib_help_modules(); - goto out_free_fs; - } - - fuse_session_add_chan(f->se, ch); - - f->ctr = 0; - f->generation = 0; - /* FIXME: Dynamic hash table */ - f->name_table_size = 14057; - f->name_table = (struct node **) - calloc(1, sizeof(struct node *) * f->name_table_size); - if (f->name_table == NULL) { - fprintf(stderr, "fuse: memory allocation failed\n"); - goto out_free_session; - } - - f->id_table_size = 14057; - f->id_table = (struct node **) - calloc(1, sizeof(struct node *) * f->id_table_size); - if (f->id_table == NULL) { - fprintf(stderr, "fuse: memory allocation failed\n"); - goto out_free_name_table; - } - - fuse_mutex_init(&f->lock); - pthread_rwlock_init(&f->tree_lock, NULL); - - root = (struct node *) calloc(1, sizeof(struct node)); - if (root == NULL) { - fprintf(stderr, "fuse: memory allocation failed\n"); - goto out_free_id_table; - } - - root->name = strdup("/"); - if (root->name == NULL) { - fprintf(stderr, "fuse: memory allocation failed\n"); - goto out_free_root; - } - - if (f->conf.intr && - fuse_init_intr_signal(f->conf.intr_signal, &f->intr_installed) == -1) - goto out_free_root_name; - - root->parent = NULL; - root->nodeid = FUSE_ROOT_ID; - root->generation = 0; - root->refctr = 1; - root->nlookup = 1; - hash_id(f, root); - - return f; - - out_free_root_name: - free(root->name); - out_free_root: - free(root); - out_free_id_table: - free(f->id_table); - out_free_name_table: - free(f->name_table); - out_free_session: - fuse_session_destroy(f->se); - out_free_fs: - /* Horrible compatibility hack to stop the destructor from being - called on the filesystem without init being called first */ - fs->op.destroy = NULL; - fuse_fs_destroy(f->fs); - free(f->conf.modules); - out_free: - free(f); - out_delete_context_key: - fuse_delete_context_key(); - out: - return NULL; + if (compat && compat <= 25) { + if (fuse_sync_compat_args(args) == -1) + goto out_free_fs; + } + + f->se = fuse_lowlevel_new_common(args, &llop, sizeof(llop), f); + if (f->se == NULL) { + if (f->conf.help) + fuse_lib_help_modules(); + goto out_free_fs; + } + + fuse_session_add_chan(f->se, ch); + + f->ctr = 0; + f->generation = 0; + /* FIXME: Dynamic hash table */ + f->name_table_size = 14057; + f->name_table = (struct node **) + calloc(1, sizeof(struct node *) * f->name_table_size); + if (f->name_table == NULL) { + fprintf(stderr, "fuse: memory allocation failed\n"); + goto out_free_session; + } + + f->id_table_size = 14057; + f->id_table = (struct node **) + calloc(1, sizeof(struct node *) * f->id_table_size); + if (f->id_table == NULL) { + fprintf(stderr, "fuse: memory allocation failed\n"); + goto out_free_name_table; + } + + fuse_mutex_init(&f->lock); + pthread_rwlock_init(&f->tree_lock, NULL); + + root = (struct node *) calloc(1, sizeof(struct node)); + if (root == NULL) { + fprintf(stderr, "fuse: memory allocation failed\n"); + goto out_free_id_table; + } + + root->name = strdup("/"); + if (root->name == NULL) { + fprintf(stderr, "fuse: memory allocation failed\n"); + goto out_free_root; + } + + if (f->conf.intr && + fuse_init_intr_signal(f->conf.intr_signal, + &f->intr_installed) == -1) + goto out_free_root_name; + + root->parent = NULL; + root->nodeid = FUSE_ROOT_ID; + root->generation = 0; + root->refctr = 1; + root->nlookup = 1; + hash_id(f, root); + + return f; + +out_free_root_name: + free(root->name); +out_free_root: + free(root); +out_free_id_table: + free(f->id_table); +out_free_name_table: + free(f->name_table); +out_free_session: + fuse_session_destroy(f->se); +out_free_fs: + /* Horrible compatibility hack to stop the destructor from being + called on the filesystem without init being called first */ + fs->op.destroy = NULL; + fuse_fs_destroy(f->fs); + free(f->conf.modules); +out_free: + free(f); +out_delete_context_key: + fuse_delete_context_key(); +out: + return NULL; } struct fuse *fuse_new(struct fuse_chan *ch, struct fuse_args *args, - const struct fuse_operations *op, size_t op_size, - void *user_data) + const struct fuse_operations *op, size_t op_size, + void *user_data) { - return fuse_new_common(ch, args, op, op_size, user_data, 0); + return fuse_new_common(ch, args, op, op_size, user_data, 0); } void fuse_destroy(struct fuse *f) { - size_t i; - - if (f->conf.intr && f->intr_installed) - fuse_restore_intr_signal(f->conf.intr_signal); - - if (f->fs) { - struct fuse_context_i *c = fuse_get_context_internal(); - - memset(c, 0, sizeof(*c)); - c->ctx.fuse = f; - - for (i = 0; i < f->id_table_size; i++) { - struct node *node; - - for (node = f->id_table[i]; node != NULL; node = node->id_next) { - if (node->is_hidden) { - char *path = get_path(f, node->nodeid); - if (path) { - fuse_fs_unlink(f->fs, path); - free(path); - } - } - } - } - } - for (i = 0; i < f->id_table_size; i++) { - struct node *node; - struct node *next; - - for (node = f->id_table[i]; node != NULL; node = next) { - next = node->id_next; - free_node(node); - } - } - free(f->id_table); - free(f->name_table); - pthread_mutex_destroy(&f->lock); - pthread_rwlock_destroy(&f->tree_lock); - fuse_session_destroy(f->se); - free(f->conf.modules); - free(f); - fuse_delete_context_key(); + size_t i; + + if (f->conf.intr && f->intr_installed) + fuse_restore_intr_signal(f->conf.intr_signal); + + if (f->fs) { + struct fuse_context_i *c = fuse_get_context_internal(); + + memset(c, 0, sizeof(*c)); + c->ctx.fuse = f; + + for (i = 0; i < f->id_table_size; i++) { + struct node *node; + + for (node = f->id_table[i]; node != NULL; + node = node->id_next) { + if (node->is_hidden) { + char *path = get_path(f, node->nodeid); + if (path) { + fuse_fs_unlink(f->fs, path); + free(path); + } + } + } + } + } + for (i = 0; i < f->id_table_size; i++) { + struct node *node; + struct node *next; + + for (node = f->id_table[i]; node != NULL; node = next) { + next = node->id_next; + free_node(node); + } + } + free(f->id_table); + free(f->name_table); + pthread_mutex_destroy(&f->lock); + pthread_rwlock_destroy(&f->tree_lock); + fuse_session_destroy(f->se); + free(f->conf.modules); + free(f); + fuse_delete_context_key(); } static struct fuse *fuse_new_common_compat25(int fd, struct fuse_args *args, - const struct fuse_operations *op, - size_t op_size, int compat) + const struct fuse_operations *op, + size_t op_size, int compat) { - struct fuse *f = NULL; - struct fuse_chan *ch = fuse_kern_chan_new(fd); + struct fuse *f = NULL; + struct fuse_chan *ch = fuse_kern_chan_new(fd); - if (ch) - f = fuse_new_common(ch, args, op, op_size, NULL, compat); + if (ch) + f = fuse_new_common(ch, args, op, op_size, NULL, compat); - return f; + return f; } /* called with fuse_context_lock held or during initialization (before main() has been called) */ void fuse_register_module(struct fuse_module *mod) { - mod->ctr = 0; - mod->so = fuse_current_so; - if (mod->so) - mod->so->ctr++; - mod->next = fuse_modules; - fuse_modules = mod; + mod->ctr = 0; + mod->so = fuse_current_so; + if (mod->so) + mod->so->ctr++; + mod->next = fuse_modules; + fuse_modules = mod; } #ifndef __FreeBSD__ static struct fuse *fuse_new_common_compat(int fd, const char *opts, - const struct fuse_operations *op, - size_t op_size, int compat) + const struct fuse_operations *op, + size_t op_size, int compat) { - struct fuse *f; - struct fuse_args args = FUSE_ARGS_INIT(0, NULL); + struct fuse *f; + struct fuse_args args = FUSE_ARGS_INIT(0, NULL); - if (fuse_opt_add_arg(&args, "") == -1) - return NULL; - if (opts && - (fuse_opt_add_arg(&args, "-o") == -1 || - fuse_opt_add_arg(&args, opts) == -1)) { - fuse_opt_free_args(&args); - return NULL; - } - f = fuse_new_common_compat25(fd, &args, op, op_size, compat); - fuse_opt_free_args(&args); + if (fuse_opt_add_arg(&args, "") == -1) + return NULL; + if (opts && + (fuse_opt_add_arg(&args, "-o") == -1 || + fuse_opt_add_arg(&args, opts) == -1)) { + fuse_opt_free_args(&args); + return NULL; + } + f = fuse_new_common_compat25(fd, &args, op, op_size, compat); + fuse_opt_free_args(&args); - return f; + return f; } struct fuse *fuse_new_compat22(int fd, const char *opts, - const struct fuse_operations_compat22 *op, - size_t op_size) + const struct fuse_operations_compat22 *op, + size_t op_size) { - return fuse_new_common_compat(fd, opts, (struct fuse_operations *) op, - op_size, 22); + return fuse_new_common_compat(fd, opts, (struct fuse_operations *) op, + op_size, 22); } struct fuse *fuse_new_compat2(int fd, const char *opts, - const struct fuse_operations_compat2 *op) + const struct fuse_operations_compat2 *op) { - return fuse_new_common_compat(fd, opts, (struct fuse_operations *) op, - sizeof(struct fuse_operations_compat2), 21); + return fuse_new_common_compat(fd, opts, (struct fuse_operations *) op, + sizeof(struct fuse_operations_compat2), + 21); } struct fuse *fuse_new_compat1(int fd, int flags, - const struct fuse_operations_compat1 *op) + const struct fuse_operations_compat1 *op) { - const char *opts = NULL; - if (flags & FUSE_DEBUG_COMPAT1) - opts = "debug"; - return fuse_new_common_compat(fd, opts, (struct fuse_operations *) op, - sizeof(struct fuse_operations_compat1), 11); + const char *opts = NULL; + if (flags & FUSE_DEBUG_COMPAT1) + opts = "debug"; + return fuse_new_common_compat(fd, opts, (struct fuse_operations *) op, + sizeof(struct fuse_operations_compat1), + 11); } FUSE_SYMVER(".symver fuse_exited,__fuse_exited@"); @@ -3300,11 +3339,11 @@ FUSE_SYMVER(".symver fuse_new_compat22,fuse_new@FUSE_2.2"); #endif /* __FreeBSD__ */ struct fuse *fuse_new_compat25(int fd, struct fuse_args *args, - const struct fuse_operations_compat25 *op, - size_t op_size) + const struct fuse_operations_compat25 *op, + size_t op_size) { - return fuse_new_common_compat25(fd, args, (struct fuse_operations *) op, - op_size, 25); + return fuse_new_common_compat25(fd, args, (struct fuse_operations *) op, + op_size, 25); } FUSE_SYMVER(".symver fuse_new_compat25,fuse_new@FUSE_2.5"); |