Refactor request opcode handlers.
This is mostly a structural change. The handlers have been moved
into individual functions, which will help with upcoming changes.
Change-Id: I774739d859e177d6b5d4186d2771444166b734fa
diff --git a/sdcard/sdcard.c b/sdcard/sdcard.c
index 4d72789..7177395 100644
--- a/sdcard/sdcard.c
+++ b/sdcard/sdcard.c
@@ -363,7 +363,9 @@
struct node *lookup_by_inode(struct fuse *fuse, __u64 nid)
{
- if (nid == FUSE_ROOT_ID) {
+ if (!nid) {
+ return NULL;
+ } else if (nid == FUSE_ROOT_ID) {
return &fuse->root;
} else {
return id_to_ptr(nid);
@@ -517,133 +519,537 @@
}
}
-void lookup_entry(struct fuse *fuse, struct node *node,
- const char *name, __u64 unique)
+static void lookup_entry(struct fuse* fuse, struct fuse_handler* handler,
+ __u64 unique, struct node* parent_node, const char* name)
{
struct fuse_entry_out out;
-
- memset(&out, 0, sizeof(out));
+ struct node* node;
- node = node_lookup(fuse, node, name, &out.attr);
+ memset(&out, 0, sizeof(out));
+ node = node_lookup(fuse, parent_node, name, &out.attr);
if (!node) {
fuse_status(fuse, unique, -ENOENT);
return;
}
-
+
node->refcount++;
-// fprintf(stderr,"ACQUIRE %p (%s) rc=%d\n", node, node->name, node->refcount);
+ TRACE("ACQUIRE %p (%s) rc=%d\n", node, node->name, node->refcount);
out.nodeid = node->nid;
out.generation = node->gen;
out.entry_valid = 10;
out.attr_valid = 10;
-
+
fuse_reply(fuse, unique, &out, sizeof(out));
}
-void handle_fuse_request(struct fuse *fuse, struct fuse_handler* handler,
- const struct fuse_in_header *hdr, const void *data, size_t data_len)
+static void handle_lookup(struct fuse* fuse, struct fuse_handler* handler,
+ const struct fuse_in_header *hdr, const char* name)
{
- struct node *node;
+ struct node* node = lookup_by_inode(fuse, hdr->nodeid);
- if (hdr->nodeid) {
- node = lookup_by_inode(fuse, hdr->nodeid);
- if (!node) {
- fuse_status(fuse, hdr->unique, -ENOENT);
- return;
- }
- } else {
- node = 0;
+ TRACE("LOOKUP %s @ %llx (%s)\n", name, hdr->nodeid, node ? node->name : "?");
+ if (!node) {
+ fuse_status(fuse, hdr->unique, -ENOENT);
+ return;
}
+ lookup_entry(fuse, handler, hdr->unique, node, name);
+}
+
+static void handle_forget(struct fuse* fuse, struct fuse_handler* handler,
+ const struct fuse_in_header *hdr, const struct fuse_forget_in *req)
+{
+ struct node* node = lookup_by_inode(fuse, hdr->nodeid);
+ __u64 n = req->nlookup;
+
+ TRACE("FORGET #%lld @ %llx (%s)\n", n, hdr->nodeid, node ? node->name : "?");
+ if (!node) {
+ fuse_status(fuse, hdr->unique, -ENOENT);
+ return;
+ }
+
+ while (n--) {
+ node_release(node);
+ }
+ /* no reply */
+}
+
+static void handle_getaddr(struct fuse* fuse, struct fuse_handler* handler,
+ const struct fuse_in_header *hdr, const struct fuse_getattr_in *req)
+{
+ struct fuse_attr_out out;
+ struct node* node = lookup_by_inode(fuse, hdr->nodeid);
+
+ TRACE("GETATTR flags=%x fh=%llx @ %llx (%s)\n", req->getattr_flags, req->fh,
+ hdr->nodeid, node ? node->name : "?");
+ if (!node) {
+ fuse_status(fuse, hdr->unique, -ENOENT);
+ return;
+ }
+
+ memset(&out, 0, sizeof(out));
+ node_get_attr(node, &out.attr);
+ out.attr_valid = 10;
+
+ fuse_reply(fuse, hdr->unique, &out, sizeof(out));
+}
+
+static void handle_setattr(struct fuse* fuse, struct fuse_handler* handler,
+ const struct fuse_in_header *hdr, const struct fuse_setattr_in *req)
+{
+ struct fuse_attr_out out;
+ char *path, buffer[PATH_MAX];
+ int res = 0;
+ struct timespec times[2];
+ struct node* node = lookup_by_inode(fuse, hdr->nodeid);
+
+ TRACE("SETATTR fh=%llx valid=%x @ %llx (%s)\n", req->fh, req->valid,
+ hdr->nodeid, node ? node->name : "?");
+ if (!node) {
+ fuse_status(fuse, hdr->unique, -ENOENT);
+ return;
+ }
+
+ /* XXX: incomplete implementation on purpose. chmod/chown
+ * should NEVER be implemented.*/
+
+ path = node_get_path(node, buffer, 0);
+ if (req->valid & FATTR_SIZE)
+ res = truncate(path, req->size);
+ if (res < 0) {
+ fuse_status(fuse, hdr->unique, -errno);
+ return;
+ }
+
+ /* Handle changing atime and mtime. If FATTR_ATIME_and FATTR_ATIME_NOW
+ * are both set, then set it to the current time. Else, set it to the
+ * time specified in the request. Same goes for mtime. Use utimensat(2)
+ * as it allows ATIME and MTIME to be changed independently, and has
+ * nanosecond resolution which fuse also has.
+ */
+ if (req->valid & (FATTR_ATIME | FATTR_MTIME)) {
+ times[0].tv_nsec = UTIME_OMIT;
+ times[1].tv_nsec = UTIME_OMIT;
+ if (req->valid & FATTR_ATIME) {
+ if (req->valid & FATTR_ATIME_NOW) {
+ times[0].tv_nsec = UTIME_NOW;
+ } else {
+ times[0].tv_sec = req->atime;
+ times[0].tv_nsec = req->atimensec;
+ }
+ }
+ if (req->valid & FATTR_MTIME) {
+ if (req->valid & FATTR_MTIME_NOW) {
+ times[1].tv_nsec = UTIME_NOW;
+ } else {
+ times[1].tv_sec = req->mtime;
+ times[1].tv_nsec = req->mtimensec;
+ }
+ }
+ TRACE("Calling utimensat on %s with atime %ld, mtime=%ld\n", path, times[0].tv_sec, times[1].tv_sec);
+ res = utimensat(-1, path, times, 0);
+ if (res < 0) {
+ fuse_status(fuse, hdr->unique, -errno);
+ return;
+ }
+ }
+
+ memset(&out, 0, sizeof(out));
+ node_get_attr(node, &out.attr);
+ out.attr_valid = 10;
+ fuse_reply(fuse, hdr->unique, &out, sizeof(out));
+}
+
+static void handle_mknod(struct fuse* fuse, struct fuse_handler* handler,
+ const struct fuse_in_header* hdr, const struct fuse_mknod_in* req, const char* name)
+{
+ char *path, buffer[PATH_MAX];
+ int res;
+ struct node* node = lookup_by_inode(fuse, hdr->nodeid);
+
+ TRACE("MKNOD %s @ %llx (%s)\n", name, hdr->nodeid, node ? node->name : "?");
+ if (!node) {
+ fuse_status(fuse, hdr->unique, -ENOENT);
+ return;
+ }
+
+ path = node_get_path(node, buffer, name);
+
+ __u32 mode = (req->mode & (~0777)) | 0664;
+ res = mknod(path, mode, req->rdev); /* XXX perm?*/
+ if (res < 0) {
+ fuse_status(fuse, hdr->unique, -errno);
+ return;
+ }
+
+ lookup_entry(fuse, handler, hdr->unique, node, name);
+}
+
+static void handle_mkdir(struct fuse* fuse, struct fuse_handler* handler,
+ const struct fuse_in_header* hdr, const struct fuse_mkdir_in* req, const char* name)
+{
+ struct fuse_entry_out out;
+ char *path, buffer[PATH_MAX];
+ int res;
+ struct node* node = lookup_by_inode(fuse, hdr->nodeid);
+
+ TRACE("MKDIR %s 0%o @ %llx (%s)\n", name, req->mode, hdr->nodeid, node ? node->name : "?");
+ if (!node) {
+ fuse_status(fuse, hdr->unique, -ENOENT);
+ return;
+ }
+
+ path = node_get_path(node, buffer, name);
+
+ __u32 mode = (req->mode & (~0777)) | 0775;
+ res = mkdir(path, mode);
+ if (res < 0) {
+ fuse_status(fuse, hdr->unique, -errno);
+ return;
+ }
+
+ lookup_entry(fuse, handler, hdr->unique, node, name);
+}
+
+static void handle_unlink(struct fuse* fuse, struct fuse_handler* handler,
+ const struct fuse_in_header* hdr, const char* name)
+{
+ char *path, buffer[PATH_MAX];
+ int res;
+ struct node* node = lookup_by_inode(fuse, hdr->nodeid);
+
+ TRACE("UNLINK %s @ %llx (%s)\n", name, hdr->nodeid, node ? node->name : "?");
+ if (!node) {
+ fuse_status(fuse, hdr->unique, -ENOENT);
+ return;
+ }
+
+ path = node_get_path(node, buffer, name);
+ res = unlink(path);
+ fuse_status(fuse, hdr->unique, res ? -errno : 0);
+}
+
+static void handle_rmdir(struct fuse* fuse, struct fuse_handler* handler,
+ const struct fuse_in_header* hdr, const char* name)
+{
+ char *path, buffer[PATH_MAX];
+ int res;
+ struct node* node = lookup_by_inode(fuse, hdr->nodeid);
+
+ TRACE("RMDIR %s @ %llx (%s)\n", name, hdr->nodeid, node ? node->name : "?");
+ if (!node) {
+ fuse_status(fuse, hdr->unique, -ENOENT);
+ return;
+ }
+
+ path = node_get_path(node, buffer, name);
+ res = rmdir(path);
+ fuse_status(fuse, hdr->unique, res ? -errno : 0);
+}
+
+static void handle_rename(struct fuse* fuse, struct fuse_handler* handler,
+ const struct fuse_in_header* hdr, const struct fuse_rename_in* req,
+ const char* oldname, const char* newname)
+{
+ char *oldpath, oldbuffer[PATH_MAX];
+ char *newpath, newbuffer[PATH_MAX];
+ struct node *target;
+ struct node *newparent;
+ int res;
+ struct node* node = lookup_by_inode(fuse, hdr->nodeid);
+
+ TRACE("RENAME %s->%s @ %llx (%s)\n", oldname, newname, hdr->nodeid, node ? node->name : "?");
+ if (!node) {
+ fuse_status(fuse, hdr->unique, -ENOENT);
+ return;
+ }
+
+ target = lookup_child_by_name(node, oldname);
+ if (!target) {
+ fuse_status(fuse, hdr->unique, -ENOENT);
+ return;
+ }
+ oldpath = node_get_path(node, oldbuffer, oldname);
+
+ newparent = lookup_by_inode(fuse, req->newdir);
+ if (!newparent) {
+ fuse_status(fuse, hdr->unique, -ENOENT);
+ return;
+ }
+ if (newparent == node) {
+ /* Special case for renaming a file where destination
+ * is same path differing only by case.
+ * In this case we don't want to look for a case insensitive match.
+ * This allows commands like "mv foo FOO" to work as expected.
+ */
+ newpath = do_node_get_path(newparent, newbuffer, newname, NO_CASE_SENSITIVE_MATCH);
+ } else {
+ newpath = node_get_path(newparent, newbuffer, newname);
+ }
+
+ if (!remove_child(node, target->nid)) {
+ ERROR("RENAME remove_child not found");
+ fuse_status(fuse, hdr->unique, -ENOENT);
+ return;
+ }
+ if (!rename_node(target, newname)) {
+ fuse_status(fuse, hdr->unique, -ENOMEM);
+ return;
+ }
+ add_node_to_parent(target, newparent);
+
+ res = rename(oldpath, newpath);
+ TRACE("RENAME result %d\n", res);
+
+ fuse_status(fuse, hdr->unique, res ? -errno : 0);
+}
+
+static void handle_open(struct fuse* fuse, struct fuse_handler* handler,
+ const struct fuse_in_header* hdr, const struct fuse_open_in* req)
+{
+ struct fuse_open_out out;
+ char *path, buffer[PATH_MAX];
+ struct handle *h;
+ struct node* node = lookup_by_inode(fuse, hdr->nodeid);
+
+ h = malloc(sizeof(*h));
+ if (!h) {
+ fuse_status(fuse, hdr->unique, -ENOMEM);
+ return;
+ }
+
+ TRACE("OPEN 0%o fh=%p @ %llx (%s)\n", req->flags, h, hdr->nodeid, node ? node->name : "?");
+ if (!node) {
+ fuse_status(fuse, hdr->unique, -ENOENT);
+ return;
+ }
+
+ path = node_get_path(node, buffer, 0);
+ h->fd = open(path, req->flags);
+ if (h->fd < 0) {
+ ERROR("ERROR\n");
+ fuse_status(fuse, hdr->unique, -errno);
+ free(h);
+ return;
+ }
+ out.fh = ptr_to_id(h);
+ out.open_flags = 0;
+ out.padding = 0;
+ fuse_reply(fuse, hdr->unique, &out, sizeof(out));
+}
+
+static void handle_read(struct fuse* fuse, struct fuse_handler* handler,
+ const struct fuse_in_header* hdr, const struct fuse_read_in* req)
+{
+ struct handle *h = id_to_ptr(req->fh);
+ __u64 unique = hdr->unique;
+ __u32 size = req->size;
+ __u64 offset = req->offset;
+ /* Don't access any other fields of hdr or req beyond this point, the read buffer
+ * overlaps the request buffer and will clobber data in the request. This
+ * saves us 128KB per request handler thread at the cost of this scary comment. */
+ int res;
+ TRACE("READ %p(%d) %u@%llu\n", h, h->fd, size, offset);
+ if (size > sizeof(handler->read_buffer)) {
+ fuse_status(fuse, unique, -EINVAL);
+ return;
+ }
+ res = pread64(h->fd, handler->read_buffer, size, offset);
+ if (res < 0) {
+ fuse_status(fuse, unique, -errno);
+ return;
+ }
+ fuse_reply(fuse, unique, handler->read_buffer, res);
+}
+
+static void handle_write(struct fuse* fuse, struct fuse_handler* handler,
+ const struct fuse_in_header* hdr, const struct fuse_write_in* req,
+ const void* buffer)
+{
+ struct fuse_write_out out;
+ struct handle *h = id_to_ptr(req->fh);
+ int res;
+ TRACE("WRITE %p(%d) %u@%llu\n", h, h->fd, req->size, req->offset);
+ res = pwrite64(h->fd, buffer, req->size, req->offset);
+ if (res < 0) {
+ fuse_status(fuse, hdr->unique, -errno);
+ return;
+ }
+ out.size = res;
+ fuse_reply(fuse, hdr->unique, &out, sizeof(out));
+}
+
+static void handle_statfs(struct fuse* fuse, struct fuse_handler* handler,
+ const struct fuse_in_header* hdr)
+{
+ struct statfs stat;
+ struct fuse_statfs_out out;
+ int res;
+
+ TRACE("STATFS\n");
+
+ if (statfs(fuse->root.name, &stat)) {
+ fuse_status(fuse, hdr->unique, -errno);
+ return;
+ }
+
+ memset(&out, 0, sizeof(out));
+ out.st.blocks = stat.f_blocks;
+ out.st.bfree = stat.f_bfree;
+ out.st.bavail = stat.f_bavail;
+ out.st.files = stat.f_files;
+ out.st.ffree = stat.f_ffree;
+ out.st.bsize = stat.f_bsize;
+ out.st.namelen = stat.f_namelen;
+ out.st.frsize = stat.f_frsize;
+ fuse_reply(fuse, hdr->unique, &out, sizeof(out));
+}
+
+static void handle_release(struct fuse* fuse, struct fuse_handler* handler,
+ const struct fuse_in_header* hdr, const struct fuse_release_in* req)
+{
+ struct handle *h = id_to_ptr(req->fh);
+ TRACE("RELEASE %p(%d)\n", h, h->fd);
+ close(h->fd);
+ free(h);
+ fuse_status(fuse, hdr->unique, 0);
+}
+
+static void handle_fsync(struct fuse* fuse, struct fuse_handler* handler,
+ const struct fuse_in_header* hdr, const struct fuse_fsync_in* req)
+{
+ int is_data_sync = req->fsync_flags & 1;
+ struct handle *h = id_to_ptr(req->fh);
+ int res;
+ TRACE("FSYNC %p(%d) is_data_sync=%d\n", h, h->fd, is_data_sync);
+ res = is_data_sync ? fdatasync(h->fd) : fsync(h->fd);
+ if (res < 0) {
+ fuse_status(fuse, hdr->unique, -errno);
+ return;
+ }
+ fuse_status(fuse, hdr->unique, 0);
+}
+
+static void handle_flush(struct fuse* fuse, struct fuse_handler* handler,
+ const struct fuse_in_header* hdr)
+{
+ fuse_status(fuse, hdr->unique, 0);
+}
+
+static void handle_opendir(struct fuse* fuse, struct fuse_handler* handler,
+ const struct fuse_in_header* hdr, const struct fuse_open_in* req)
+{
+ struct fuse_open_out out;
+ char *path, buffer[PATH_MAX];
+ struct dirhandle *h;
+ struct node* node = lookup_by_inode(fuse, hdr->nodeid);
+
+ TRACE("OPENDIR @ %llx (%s)\n", hdr->nodeid, node ? node->name : "?");
+ if (!node) {
+ fuse_status(fuse, hdr->unique, -ENOENT);
+ return;
+ }
+
+ h = malloc(sizeof(*h));
+ if (!h) {
+ fuse_status(fuse, hdr->unique, -ENOMEM);
+ return;
+ }
+
+ path = node_get_path(node, buffer, 0);
+ h->d = opendir(path);
+ if (h->d == 0) {
+ ERROR("ERROR\n");
+ fuse_status(fuse, hdr->unique, -errno);
+ free(h);
+ return;
+ }
+ out.fh = ptr_to_id(h);
+ fuse_reply(fuse, hdr->unique, &out, sizeof(out));
+}
+
+static void handle_readdir(struct fuse* fuse, struct fuse_handler* handler,
+ const struct fuse_in_header* hdr, const struct fuse_read_in* req)
+{
+ char buffer[8192];
+ struct fuse_dirent *fde = (struct fuse_dirent*) buffer;
+ struct dirent *de;
+ struct dirhandle *h = id_to_ptr(req->fh);
+ TRACE("READDIR %p\n", h);
+ if (req->offset == 0) {
+ /* rewinddir() might have been called above us, so rewind here too */
+ TRACE("calling rewinddir()\n");
+ rewinddir(h->d);
+ }
+ de = readdir(h->d);
+ if (!de) {
+ fuse_status(fuse, hdr->unique, 0);
+ return;
+ }
+ fde->ino = FUSE_UNKNOWN_INO;
+ /* increment the offset so we can detect when rewinddir() seeks back to the beginning */
+ fde->off = req->offset + 1;
+ fde->type = de->d_type;
+ fde->namelen = strlen(de->d_name);
+ memcpy(fde->name, de->d_name, fde->namelen + 1);
+ fuse_reply(fuse, hdr->unique, fde,
+ FUSE_DIRENT_ALIGN(sizeof(struct fuse_dirent) + fde->namelen));
+}
+
+static void handle_releasedir(struct fuse* fuse, struct fuse_handler* handler,
+ const struct fuse_in_header* hdr, const struct fuse_release_in* req)
+{
+ struct dirhandle *h = id_to_ptr(req->fh);
+ TRACE("RELEASEDIR %p\n",h);
+ closedir(h->d);
+ free(h);
+ fuse_status(fuse, hdr->unique, 0);
+}
+
+static void handle_init(struct fuse* fuse, struct fuse_handler* handler,
+ const struct fuse_in_header* hdr, const struct fuse_init_in* req)
+{
+ struct fuse_init_out out;
+
+ TRACE("INIT ver=%d.%d maxread=%d flags=%x\n",
+ req->major, req->minor, req->max_readahead, req->flags);
+
+ out.major = FUSE_KERNEL_VERSION;
+ out.minor = FUSE_KERNEL_MINOR_VERSION;
+ out.max_readahead = req->max_readahead;
+ out.flags = FUSE_ATOMIC_O_TRUNC | FUSE_BIG_WRITES;
+ out.max_background = 32;
+ out.congestion_threshold = 32;
+ out.max_write = MAX_WRITE;
+
+ fuse_reply(fuse, hdr->unique, &out, sizeof(out));
+}
+
+static void handle_fuse_request(struct fuse *fuse, struct fuse_handler* handler,
+ const struct fuse_in_header *hdr, const void *data, size_t data_len)
+{
switch (hdr->opcode) {
case FUSE_LOOKUP: { /* bytez[] -> entry_out */
const char* name = data;
- TRACE("LOOKUP %llx %s\n", hdr->nodeid, name);
- lookup_entry(fuse, node, name, hdr->unique);
+ handle_lookup(fuse, handler, hdr, name);
return;
}
case FUSE_FORGET: {
const struct fuse_forget_in *req = data;
- __u64 n = req->nlookup;
- TRACE("FORGET %llx (%s) #%lld\n", hdr->nodeid, node->name, n);
- /* no reply */
- while (n--)
- node_release(node);
+ handle_forget(fuse, handler, hdr, req);
return;
}
case FUSE_GETATTR: { /* getattr_in -> attr_out */
const struct fuse_getattr_in *req = data;
- struct fuse_attr_out out;
-
- TRACE("GETATTR flags=%x fh=%llx\n", req->getattr_flags, req->fh);
-
- memset(&out, 0, sizeof(out));
- node_get_attr(node, &out.attr);
- out.attr_valid = 10;
-
- fuse_reply(fuse, hdr->unique, &out, sizeof(out));
+ handle_getaddr(fuse, handler, hdr, req);
return;
}
case FUSE_SETATTR: { /* setattr_in -> attr_out */
const struct fuse_setattr_in *req = data;
- struct fuse_attr_out out;
- char *path, buffer[PATH_MAX];
- int res = 0;
- struct timespec times[2];
-
- TRACE("SETATTR fh=%llx id=%llx valid=%x\n",
- req->fh, hdr->nodeid, req->valid);
-
- /* XXX: incomplete implementation on purpose. chmod/chown
- * should NEVER be implemented.*/
-
- path = node_get_path(node, buffer, 0);
- if (req->valid & FATTR_SIZE)
- res = truncate(path, req->size);
- if (res)
- goto getout;
-
- /* Handle changing atime and mtime. If FATTR_ATIME_and FATTR_ATIME_NOW
- * are both set, then set it to the current time. Else, set it to the
- * time specified in the request. Same goes for mtime. Use utimensat(2)
- * as it allows ATIME and MTIME to be changed independently, and has
- * nanosecond resolution which fuse also has.
- */
- if (req->valid & (FATTR_ATIME | FATTR_MTIME)) {
- times[0].tv_nsec = UTIME_OMIT;
- times[1].tv_nsec = UTIME_OMIT;
- if (req->valid & FATTR_ATIME) {
- if (req->valid & FATTR_ATIME_NOW) {
- times[0].tv_nsec = UTIME_NOW;
- } else {
- times[0].tv_sec = req->atime;
- times[0].tv_nsec = req->atimensec;
- }
- }
- if (req->valid & FATTR_MTIME) {
- if (req->valid & FATTR_MTIME_NOW) {
- times[1].tv_nsec = UTIME_NOW;
- } else {
- times[1].tv_sec = req->mtime;
- times[1].tv_nsec = req->mtimensec;
- }
- }
- TRACE("Calling utimensat on %s with atime %ld, mtime=%ld\n", path, times[0].tv_sec, times[1].tv_sec);
- res = utimensat(-1, path, times, 0);
- }
-
- getout:
- memset(&out, 0, sizeof(out));
- node_get_attr(node, &out.attr);
- out.attr_valid = 10;
-
- if (res)
- fuse_status(fuse, hdr->unique, -errno);
- else
- fuse_reply(fuse, hdr->unique, &out, sizeof(out));
+ handle_setattr(fuse, handler, hdr, req);
return;
}
@@ -652,61 +1058,26 @@
case FUSE_MKNOD: { /* mknod_in, bytez[] -> entry_out */
const struct fuse_mknod_in *req = data;
const char *name = ((const char*) data) + sizeof(*req);
- char *path, buffer[PATH_MAX];
- int res;
-
- TRACE("MKNOD %s @ %llx\n", name, hdr->nodeid);
- path = node_get_path(node, buffer, name);
-
- __u32 mode = (req->mode & (~0777)) | 0664;
- res = mknod(path, mode, req->rdev); /* XXX perm?*/
- if (res < 0) {
- fuse_status(fuse, hdr->unique, -errno);
- } else {
- lookup_entry(fuse, node, name, hdr->unique);
- }
+ handle_mknod(fuse, handler, hdr, req, name);
return;
}
case FUSE_MKDIR: { /* mkdir_in, bytez[] -> entry_out */
const struct fuse_mkdir_in *req = data;
const char *name = ((const char*) data) + sizeof(*req);
- struct fuse_entry_out out;
- char *path, buffer[PATH_MAX];
- int res;
-
- TRACE("MKDIR %s @ %llx 0%o\n", name, hdr->nodeid, req->mode);
- path = node_get_path(node, buffer, name);
-
- __u32 mode = (req->mode & (~0777)) | 0775;
- res = mkdir(path, mode);
- if (res < 0) {
- fuse_status(fuse, hdr->unique, -errno);
- } else {
- lookup_entry(fuse, node, name, hdr->unique);
- }
+ handle_mkdir(fuse, handler, hdr, req, name);
return;
}
case FUSE_UNLINK: { /* bytez[] -> */
const char* name = data;
- char *path, buffer[PATH_MAX];
- int res;
- TRACE("UNLINK %s @ %llx\n", name, hdr->nodeid);
- path = node_get_path(node, buffer, name);
- res = unlink(path);
- fuse_status(fuse, hdr->unique, res ? -errno : 0);
+ handle_unlink(fuse, handler, hdr, name);
return;
}
case FUSE_RMDIR: { /* bytez[] -> */
const char* name = data;
- char *path, buffer[PATH_MAX];
- int res;
- TRACE("RMDIR %s @ %llx\n", name, hdr->nodeid);
- path = node_get_path(node, buffer, name);
- res = rmdir(path);
- fuse_status(fuse, hdr->unique, res ? -errno : 0);
+ handle_rmdir(fuse, handler, hdr, name);
return;
}
@@ -714,172 +1085,44 @@
const struct fuse_rename_in *req = data;
const char *oldname = ((const char*) data) + sizeof(*req);
const char *newname = oldname + strlen(oldname) + 1;
- char *oldpath, oldbuffer[PATH_MAX];
- char *newpath, newbuffer[PATH_MAX];
- struct node *target;
- struct node *newparent;
- int res;
-
- TRACE("RENAME %s->%s @ %llx\n", oldname, newname, hdr->nodeid);
-
- target = lookup_child_by_name(node, oldname);
- if (!target) {
- fuse_status(fuse, hdr->unique, -ENOENT);
- return;
- }
- oldpath = node_get_path(node, oldbuffer, oldname);
-
- newparent = lookup_by_inode(fuse, req->newdir);
- if (!newparent) {
- fuse_status(fuse, hdr->unique, -ENOENT);
- return;
- }
- if (newparent == node) {
- /* Special case for renaming a file where destination
- * is same path differing only by case.
- * In this case we don't want to look for a case insensitive match.
- * This allows commands like "mv foo FOO" to work as expected.
- */
- newpath = do_node_get_path(newparent, newbuffer, newname, NO_CASE_SENSITIVE_MATCH);
- } else {
- newpath = node_get_path(newparent, newbuffer, newname);
- }
-
- if (!remove_child(node, target->nid)) {
- ERROR("RENAME remove_child not found");
- fuse_status(fuse, hdr->unique, -ENOENT);
- return;
- }
- if (!rename_node(target, newname)) {
- fuse_status(fuse, hdr->unique, -ENOMEM);
- return;
- }
- add_node_to_parent(target, newparent);
-
- res = rename(oldpath, newpath);
- TRACE("RENAME result %d\n", res);
-
- fuse_status(fuse, hdr->unique, res ? -errno : 0);
+ handle_rename(fuse, handler, hdr, req, oldname, newname);
return;
}
-// case FUSE_LINK:
+// case FUSE_LINK:
case FUSE_OPEN: { /* open_in -> open_out */
const struct fuse_open_in *req = data;
- struct fuse_open_out out;
- char *path, buffer[PATH_MAX];
- struct handle *h;
-
- h = malloc(sizeof(*h));
- if (!h) {
- fuse_status(fuse, hdr->unique, -ENOMEM);
- return;
- }
-
- path = node_get_path(node, buffer, 0);
- TRACE("OPEN %llx '%s' 0%o fh=%p\n", hdr->nodeid, path, req->flags, h);
- h->fd = open(path, req->flags);
- if (h->fd < 0) {
- ERROR("ERROR\n");
- fuse_status(fuse, hdr->unique, -errno);
- free(h);
- return;
- }
- out.fh = ptr_to_id(h);
- out.open_flags = 0;
- out.padding = 0;
- fuse_reply(fuse, hdr->unique, &out, sizeof(out));
+ handle_open(fuse, handler, hdr, req);
return;
}
case FUSE_READ: { /* read_in -> byte[] */
const struct fuse_read_in *req = data;
- struct handle *h = id_to_ptr(req->fh);
- __u64 unique = hdr->unique;
- __u32 size = req->size;
- __u64 offset = req->offset;
- /* Don't access any other fields of hdr or req beyond this point, the read buffer
- * overlaps the request buffer and will clobber data in the request. This
- * saves us 128KB per request handler thread at the cost of this scary comment. */
- int res;
- TRACE("READ %p(%d) %u@%llu\n", h, h->fd, size, offset);
- if (size > sizeof(handler->read_buffer)) {
- fuse_status(fuse, unique, -EINVAL);
- return;
- }
- res = pread64(h->fd, handler->read_buffer, size, offset);
- if (res < 0) {
- fuse_status(fuse, unique, -errno);
- return;
- }
- fuse_reply(fuse, unique, handler->read_buffer, res);
+ handle_read(fuse, handler, hdr, req);
return;
}
case FUSE_WRITE: { /* write_in, byte[write_in.size] -> write_out */
const struct fuse_write_in *req = data;
const void* buffer = (const __u8*)data + sizeof(*req);
- struct fuse_write_out out;
- struct handle *h = id_to_ptr(req->fh);
- int res;
- TRACE("WRITE %p(%d) %u@%llu\n", h, h->fd, req->size, req->offset);
- res = pwrite64(h->fd, buffer, req->size, req->offset);
- if (res < 0) {
- fuse_status(fuse, hdr->unique, -errno);
- return;
- }
- out.size = res;
- fuse_reply(fuse, hdr->unique, &out, sizeof(out));
+ handle_write(fuse, handler, hdr, req, buffer);
return;
}
case FUSE_STATFS: { /* getattr_in -> attr_out */
- struct statfs stat;
- struct fuse_statfs_out out;
- int res;
-
- TRACE("STATFS\n");
-
- if (statfs(fuse->root.name, &stat)) {
- fuse_status(fuse, hdr->unique, -errno);
- return;
- }
-
- memset(&out, 0, sizeof(out));
- out.st.blocks = stat.f_blocks;
- out.st.bfree = stat.f_bfree;
- out.st.bavail = stat.f_bavail;
- out.st.files = stat.f_files;
- out.st.ffree = stat.f_ffree;
- out.st.bsize = stat.f_bsize;
- out.st.namelen = stat.f_namelen;
- out.st.frsize = stat.f_frsize;
- fuse_reply(fuse, hdr->unique, &out, sizeof(out));
+ handle_statfs(fuse, handler, hdr);
return;
}
case FUSE_RELEASE: { /* release_in -> */
const struct fuse_release_in *req = data;
- struct handle *h = id_to_ptr(req->fh);
- TRACE("RELEASE %p(%d)\n", h, h->fd);
- close(h->fd);
- free(h);
- fuse_status(fuse, hdr->unique, 0);
+ handle_release(fuse, handler, hdr, req);
return;
}
case FUSE_FSYNC: {
const struct fuse_fsync_in *req = data;
- int is_data_sync = req->fsync_flags & 1;
- struct handle *h = id_to_ptr(req->fh);
- int res;
- TRACE("FSYNC %p(%d) is_data_sync=%d\n", h, h->fd, is_data_sync);
- res = is_data_sync ? fdatasync(h->fd) : fsync(h->fd);
- if (res < 0) {
- fuse_status(fuse, hdr->unique, -errno);
- return;
- }
- fuse_status(fuse, hdr->unique, 0);
+ handle_fsync(fuse, handler, hdr, req);
return;
}
@@ -888,91 +1131,32 @@
// case FUSE_LISTXATTR:
// case FUSE_REMOVEXATTR:
case FUSE_FLUSH: {
- fuse_status(fuse, hdr->unique, 0);
+ handle_flush(fuse, handler, hdr);
return;
}
case FUSE_OPENDIR: { /* open_in -> open_out */
const struct fuse_open_in *req = data;
- struct fuse_open_out out;
- char *path, buffer[PATH_MAX];
- struct dirhandle *h;
-
- h = malloc(sizeof(*h));
- if (!h) {
- fuse_status(fuse, hdr->unique, -ENOMEM);
- return;
- }
-
- path = node_get_path(node, buffer, 0);
- TRACE("OPENDIR %llx '%s'\n", hdr->nodeid, path);
- h->d = opendir(path);
- if (h->d == 0) {
- ERROR("ERROR\n");
- fuse_status(fuse, hdr->unique, -errno);
- free(h);
- return;
- }
- out.fh = ptr_to_id(h);
- fuse_reply(fuse, hdr->unique, &out, sizeof(out));
+ handle_opendir(fuse, handler, hdr, req);
return;
}
case FUSE_READDIR: {
const struct fuse_read_in *req = data;
- char buffer[8192];
- struct fuse_dirent *fde = (struct fuse_dirent*) buffer;
- struct dirent *de;
- struct dirhandle *h = id_to_ptr(req->fh);
- TRACE("READDIR %p\n", h);
- if (req->offset == 0) {
- /* rewinddir() might have been called above us, so rewind here too */
- TRACE("calling rewinddir()\n");
- rewinddir(h->d);
- }
- de = readdir(h->d);
- if (!de) {
- fuse_status(fuse, hdr->unique, 0);
- return;
- }
- fde->ino = FUSE_UNKNOWN_INO;
- /* increment the offset so we can detect when rewinddir() seeks back to the beginning */
- fde->off = req->offset + 1;
- fde->type = de->d_type;
- fde->namelen = strlen(de->d_name);
- memcpy(fde->name, de->d_name, fde->namelen + 1);
- fuse_reply(fuse, hdr->unique, fde,
- FUSE_DIRENT_ALIGN(sizeof(struct fuse_dirent) + fde->namelen));
+ handle_readdir(fuse, handler, hdr, req);
return;
}
case FUSE_RELEASEDIR: { /* release_in -> */
const struct fuse_release_in *req = data;
- struct dirhandle *h = id_to_ptr(req->fh);
- TRACE("RELEASEDIR %p\n",h);
- closedir(h->d);
- free(h);
- fuse_status(fuse, hdr->unique, 0);
+ handle_releasedir(fuse, handler, hdr, req);
return;
}
// case FUSE_FSYNCDIR:
case FUSE_INIT: { /* init_in -> init_out */
const struct fuse_init_in *req = data;
- struct fuse_init_out out;
-
- TRACE("INIT ver=%d.%d maxread=%d flags=%x\n",
- req->major, req->minor, req->max_readahead, req->flags);
-
- out.major = FUSE_KERNEL_VERSION;
- out.minor = FUSE_KERNEL_MINOR_VERSION;
- out.max_readahead = req->max_readahead;
- out.flags = FUSE_ATOMIC_O_TRUNC | FUSE_BIG_WRITES;
- out.max_background = 32;
- out.congestion_threshold = 32;
- out.max_write = MAX_WRITE;
-
- fuse_reply(fuse, hdr->unique, &out, sizeof(out));
+ handle_init(fuse, handler, hdr, req);
return;
}
@@ -985,7 +1169,7 @@
}
}
-void handle_fuse_requests(struct fuse *fuse, struct fuse_handler* handler)
+static void handle_fuse_requests(struct fuse *fuse, struct fuse_handler* handler)
{
for (;;) {
ssize_t len = read(fuse->fd, handler->request_buffer, sizeof(handler->request_buffer));
@@ -1016,7 +1200,7 @@
}
}
-int ignite_fuse(struct fuse* fuse)
+static int ignite_fuse(struct fuse* fuse)
{
/* use only one handler thread for now */
struct fuse_handler handler;