#include <sys/param.h>
#include <sys/uio.h>
-/* FUSE flags: */
-
-/** Enable debuging output */
-#define FUSE_DEBUG (1 << 1)
-
-/** If a file is removed but it's still open, don't hide the file but
- remove it immediately */
-#define FUSE_HARD_REMOVE (1 << 2)
-
-/** Use st_ino field in getattr instead of generating inode numbers */
-#define FUSE_USE_INO (1 << 3)
-
-/** Only allow root or the owner to access the filesystem */
-#define FUSE_ALLOW_ROOT (1 << 4)
-
-/** Make a best effort to fill in inode number in a readdir **/
-#define FUSE_READDIR_INO (1 << 5)
-
-/** Ignore file mode supplied by the filesystem, and create one based
- on the 'umask' option */
-#define FUSE_SET_MODE (1 << 6)
-
-/** Ignore st_uid supplied by the filesystem and set it based on the
- 'uid' option*/
-#define FUSE_SET_UID (1 << 7)
-
-/** Ignore st_gid supplied by the filesystem and set it based on the
- 'gid' option*/
-#define FUSE_SET_GID (1 << 8)
-
+#define PARAM(inarg) (((char *)(inarg)) + sizeof(*(inarg)))
struct fuse_ll {
- int flags;
+ unsigned int debug : 1;
+ unsigned int allow_root : 1;
int fd;
struct fuse_lowlevel_operations op;
volatile int exited;
int major;
int minor;
uid_t owner;
- uid_t uid;
- gid_t gid;
- mode_t umask;
};
struct fuse_cmd {
}
}
-
-static void convert_stat(struct fuse_ll *f, nodeid_t nodeid, struct stat *stbuf,
- struct fuse_attr *attr)
+static void convert_stat(struct stat *stbuf, struct fuse_attr *attr)
{
- attr->ino = (f->flags & FUSE_USE_INO) ? stbuf->st_ino : nodeid;
+ attr->ino = stbuf->st_ino;
attr->mode = stbuf->st_mode;
- if (f->flags & FUSE_SET_MODE)
- attr->mode = (attr->mode & S_IFMT) | (0777 & ~f->umask);
attr->nlink = stbuf->st_nlink;
- attr->uid = (f->flags & FUSE_SET_UID) ? f->uid : stbuf->st_uid;
- attr->gid = (f->flags & FUSE_SET_GID) ? f->gid : stbuf->st_gid;
+ attr->uid = stbuf->st_uid;
+ attr->gid = stbuf->st_gid;
attr->rdev = stbuf->st_rdev;
attr->size = stbuf->st_size;
attr->blocks = stbuf->st_blocks;
return send_reply_raw(f, iov, count);
}
-static void do_lookup(struct fuse_ll *f, struct fuse_in_header *in, char *name)
-{
- int res;
- int res2;
- char *path;
- struct fuse_entry_out arg;
-
- res = -ENOENT;
- pthread_rwlock_rdlock(&f->tree_lock);
- path = get_path_name(f, in->nodeid, name);
- if (path != NULL) {
- if (f->flags & FUSE_DEBUG) {
- printf("LOOKUP %s\n", path);
- fflush(stdout);
- }
- res = -ENOSYS;
- if (f->op.getattr)
- res = lookup_path(f, in->nodeid, in->unique, name, path, &arg);
- free(path);
- }
- pthread_rwlock_unlock(&f->tree_lock);
- res2 = send_reply(f, in, res, &arg, sizeof(arg));
- if (res == 0 && res2 == -ENOENT)
- cancel_lookup(f, arg.nodeid, in->unique);
-}
-
-static void do_forget(struct fuse_ll *f, struct fuse_in_header *in,
- struct fuse_forget_in *arg)
+size_t fuse_dirent_size(size_t namelen)
{
- if (f->flags & FUSE_DEBUG) {
- printf("FORGET %lu/%llu\n", (unsigned long) in->nodeid,
- arg->nlookup);
- fflush(stdout);
- }
- if (f->major <= 6)
- forget_node_old(f, in->nodeid, arg->nlookup);
- else
- forget_node(f, in->nodeid, arg->nlookup);
+ return FUSE_DIRENT_ALIGN(FUSE_NAME_OFFSET + namelen);
}
-static void do_getattr(struct fuse_ll *f, struct fuse_in_header *in)
+void fuse_add_dirent(char *buf, const char *name, const struct stat *stat,
+ off_t off)
{
- int res;
- char *path;
- struct stat buf;
- struct fuse_attr_out arg;
-
- res = -ENOENT;
- pthread_rwlock_rdlock(&f->tree_lock);
- path = get_path(f, in->nodeid);
- if (path != NULL) {
- res = -ENOSYS;
- if (f->op.getattr)
- res = f->op.getattr(path, &buf);
- free(path);
- }
- pthread_rwlock_unlock(&f->tree_lock);
-
- if (res == 0) {
- memset(&arg, 0, sizeof(struct fuse_attr_out));
- arg.attr_valid = ATTR_REVALIDATE_TIME;
- arg.attr_valid_nsec = 0;
- convert_stat(f, in->nodeid, &buf, &arg.attr);
- }
+ unsigned namelen = strlen(name);
+ unsigned entlen = FUSE_NAME_OFFSET + namelen;
+ unsigned entsize = fuse_dirent_size(namelen);
+ unsigned padlen = entsize - entlen;
+ struct fuse_dirent *dirent = (struct fuse_dirent *) buf;
+
+ dirent->ino = stat->st_ino;
+ dirent->off = off;
+ dirent->namelen = namelen;
+ dirent->type = (stat->st_mode & 0170000) >> 12;
+ strncpy(dirent->name, name, namelen);
+ if (padlen)
+ memset(buf + entlen, 0, padlen);
- send_reply(f, in, res, &arg, sizeof(arg));
+ return 0;
}
-static int do_chmod(struct fuse_ll *f, const char *path, struct fuse_attr *attr)
+static void convert_statfs(struct statfs *statfs, struct fuse_kstatfs *kstatfs)
{
- int res;
-
- res = -ENOSYS;
- if (f->op.chmod)
- res = f->op.chmod(path, attr->mode);
-
- return res;
+ kstatfs->bsize = statfs->f_bsize;
+ kstatfs->blocks = statfs->f_blocks;
+ kstatfs->bfree = statfs->f_bfree;
+ kstatfs->bavail = statfs->f_bavail;
+ kstatfs->files = statfs->f_files;
+ kstatfs->ffree = statfs->f_ffree;
+ kstatfs->namelen = statfs->f_namelen;
}
-static int do_chown(struct fuse_ll *f, const char *path, struct fuse_attr *attr,
- int valid)
+static void do_lookup(fuse_req_t req, fuse_ino_t nodeid, char *name)
{
- int res;
- uid_t uid = (valid & FATTR_UID) ? attr->uid : (uid_t) -1;
- gid_t gid = (valid & FATTR_GID) ? attr->gid : (gid_t) -1;
-
- res = -ENOSYS;
- if (f->op.chown)
- res = f->op.chown(path, uid, gid);
-
- return res;
+ if (req->f->op.lookup)
+ req->f->op.lookup(req, nodeid, name);
+ else
+ fuse_reply_err(req, ENOSYS);
}
-static int do_truncate(struct fuse_ll *f, const char *path,
- struct fuse_attr *attr)
+static void do_forget(fuse_req_t req, fuse_ino_t nodeid)
{
- int res;
-
- res = -ENOSYS;
- if (f->op.truncate)
- res = f->op.truncate(path, attr->size);
-
- return res;
+ if (req->f->op.forget)
+ req->f->op.forget(req, nodeid);
}
-static int do_utime(struct fuse_ll *f, const char *path, struct fuse_attr *attr)
+static void do_getattr(fuse_req_t req, fuse_ino_t nodeid)
{
- int res;
- struct utimbuf buf;
- buf.actime = attr->atime;
- buf.modtime = attr->mtime;
- res = -ENOSYS;
- if (f->op.utime)
- res = f->op.utime(path, &buf);
-
- return res;
+ if (req->f->op.getattr)
+ req->f->op.getattr(req, nodeid);
+ else
+ fuse_reply_err(req, ENOSYS);
}
-static void do_setattr(struct fuse_ll *f, struct fuse_in_header *in,
+static void do_setattr(fuse_req_t req, fuse_ino_t nodeid,
struct fuse_setattr_in *arg)
{
- int res;
- char *path;
- int valid = arg->valid;
- struct fuse_attr *attr = MEMBER_COMPAT(f, arg, attr, fuse_setattr_in);
- struct fuse_attr_out outarg;
-
- res = -ENOENT;
- pthread_rwlock_rdlock(&f->tree_lock);
- path = get_path(f, in->nodeid);
- if (path != NULL) {
- res = -ENOSYS;
- if (f->op.getattr) {
- res = 0;
- if (!res && (valid & FATTR_MODE))
- res = do_chmod(f, path, attr);
- if (!res && (valid & (FATTR_UID | FATTR_GID)))
- res = do_chown(f, path, attr, valid);
- if (!res && (valid & FATTR_SIZE))
- res = do_truncate(f, path, attr);
- if (!res && (valid & (FATTR_ATIME | FATTR_MTIME)) ==
- (FATTR_ATIME | FATTR_MTIME))
- res = do_utime(f, path, attr);
- if (!res) {
- struct stat buf;
- res = f->op.getattr(path, &buf);
- if (!res) {
- memset(&outarg, 0, sizeof(struct fuse_attr_out));
- outarg.attr_valid = ATTR_REVALIDATE_TIME;
- outarg.attr_valid_nsec = 0;
- convert_stat(f, in->nodeid, &buf, &outarg.attr);
- }
- }
- }
- free(path);
- }
- pthread_rwlock_unlock(&f->tree_lock);
- send_reply(f, in, res, &outarg, sizeof(outarg));
+ if (req->f->op.setattr)
+ req->f->op.setattr(req, nodeid, &arg->attr, arg->valid);
+ else
+ fuse_reply_err(req, ENOSYS);
}
-static void do_readlink(struct fuse_ll *f, struct fuse_in_header *in)
+static void do_readlink(fuse_req_t req, fuse_ino_t nodeid)
{
- int res;
- char link[PATH_MAX + 1];
- char *path;
-
- res = -ENOENT;
- pthread_rwlock_rdlock(&f->tree_lock);
- path = get_path(f, in->nodeid);
- if (path != NULL) {
- res = -ENOSYS;
- if (f->op.readlink)
- res = f->op.readlink(path, link, sizeof(link));
- free(path);
- }
- pthread_rwlock_unlock(&f->tree_lock);
- link[PATH_MAX] = '\0';
- send_reply(f, in, res, link, res == 0 ? strlen(link) : 0);
+ if (req->f->op.readlink)
+ req->f->op.readlink(req, nodeid);
+ else
+ fuse_reply_err(req, ENOSYS);
}
-static void do_mknod(struct fuse_ll *f, struct fuse_in_header *in,
- struct fuse_mknod_in *inarg)
+static void do_mknod(fuse_req_t req, fuse_ino_t nodeid,
+ struct fuse_mknod_in *arg)
{
- int res;
- int res2;
- char *path;
- char *name = PARAM(inarg);
- struct fuse_entry_out outarg;
-
- res = -ENOENT;
- pthread_rwlock_rdlock(&f->tree_lock);
- path = get_path_name(f, in->nodeid, name);
- if (path != NULL) {
- if (f->flags & FUSE_DEBUG) {
- printf("MKNOD %s\n", path);
- fflush(stdout);
- }
- res = -ENOSYS;
- if (f->op.mknod && f->op.getattr) {
- res = f->op.mknod(path, inarg->mode, inarg->rdev);
- if (res == 0)
- res = lookup_path(f, in->nodeid, in->unique, name, path, &outarg);
- }
- free(path);
- }
- pthread_rwlock_unlock(&f->tree_lock);
- res2 = send_reply(f, in, res, &outarg, sizeof(outarg));
- if (res == 0 && res2 == -ENOENT)
- cancel_lookup(f, outarg.nodeid, in->unique);
+ if (req->f->op.mknod)
+ req->f->op.mknod(req, nodeid, PARAM(arg), arg->mode, arg->rdev);
+ else
+ fuse_reply_err(req, ENOSYS);
}
-static void do_mkdir(struct fuse_ll *f, struct fuse_in_header *in,
- struct fuse_mkdir_in *inarg)
+static void do_mkdir(fuse_req_t req, fuse_ino_t nodeid,
+ struct fuse_mkdir_in *arg)
{
- int res;
- int res2;
- char *path;
- char *name = PARAM_COMPAT(f, inarg, fuse_mkdir_in);
- struct fuse_entry_out outarg;
-
- res = -ENOENT;
- pthread_rwlock_rdlock(&f->tree_lock);
- path = get_path_name(f, in->nodeid, name);
- if (path != NULL) {
- if (f->flags & FUSE_DEBUG) {
- printf("MKDIR %s\n", path);
- fflush(stdout);
- }
- res = -ENOSYS;
- if (f->op.mkdir && f->op.getattr) {
- res = f->op.mkdir(path, inarg->mode);
- if (res == 0)
- res = lookup_path(f, in->nodeid, in->unique, name, path, &outarg);
- }
- free(path);
- }
- pthread_rwlock_unlock(&f->tree_lock);
- res2 = send_reply(f, in, res, &outarg, sizeof(outarg));
- if (res == 0 && res2 == -ENOENT)
- cancel_lookup(f, outarg.nodeid, in->unique);
+ if (req->f->op.mkdir)
+ req->f->op.mkdir(req, nodeid, PARAM(arg), arg->mode);
+ else
+ fuse_reply_err(req, ENOSYS);
}
-static void do_unlink(struct fuse_ll *f, struct fuse_in_header *in, char *name)
+static void do_unlink(fuse_req_t req, fuse_ino_t nodeid, char *name)
{
- int res;
- char *path;
-
- res = -ENOENT;
- pthread_rwlock_wrlock(&f->tree_lock);
- path = get_path_name(f, in->nodeid, name);
- if (path != NULL) {
- if (f->flags & FUSE_DEBUG) {
- printf("UNLINK %s\n", path);
- fflush(stdout);
- }
- res = -ENOSYS;
- if (f->op.unlink) {
- if (!(f->flags & FUSE_HARD_REMOVE) && is_open(f, in->nodeid, name))
- res = hide_node(f, path, in->nodeid, name);
- else {
- res = f->op.unlink(path);
- if (res == 0)
- remove_node(f, in->nodeid, name);
-
- }
- }
- free(path);
- }
- pthread_rwlock_unlock(&f->tree_lock);
- send_reply(f, in, res, NULL, 0);
+ if (req->f->op.unlink)
+ req->f->op.unlink(req, nodeid, name);
+ else
+ fuse_reply_err(req, ENOSYS);
}
-static void do_rmdir(struct fuse_ll *f, struct fuse_in_header *in, char *name)
+static void do_rmdir(fuse_req_t req, fuse_ino_t nodeid, char *name)
{
- int res;
- char *path;
-
- res = -ENOENT;
- pthread_rwlock_wrlock(&f->tree_lock);
- path = get_path_name(f, in->nodeid, name);
- if (path != NULL) {
- if (f->flags & FUSE_DEBUG) {
- printf("RMDIR %s\n", path);
- fflush(stdout);
- }
- res = -ENOSYS;
- if (f->op.rmdir) {
- res = f->op.rmdir(path);
- if (res == 0)
- remove_node(f, in->nodeid, name);
- }
- free(path);
- }
- pthread_rwlock_unlock(&f->tree_lock);
- send_reply(f, in, res, NULL, 0);
+ if (req->f->op.rmdir)
+ req->f->op.rmdir(req, nodeid, name);
+ else
+ fuse_reply_err(req, ENOSYS);
}
-static void do_symlink(struct fuse_ll *f, struct fuse_in_header *in, char *name,
+static void do_symlink(fuse_req_t req, fuse_ino_t nodeid, char *name,
char *link)
{
- int res;
- int res2;
- char *path;
- struct fuse_entry_out outarg;
-
- res = -ENOENT;
- pthread_rwlock_rdlock(&f->tree_lock);
- path = get_path_name(f, in->nodeid, name);
- if (path != NULL) {
- if (f->flags & FUSE_DEBUG) {
- printf("SYMLINK %s\n", path);
- fflush(stdout);
- }
- res = -ENOSYS;
- if (f->op.symlink && f->op.getattr) {
- res = f->op.symlink(link, path);
- if (res == 0)
- res = lookup_path(f, in->nodeid, in->unique, name, path, &outarg);
- }
- free(path);
- }
- pthread_rwlock_unlock(&f->tree_lock);
- res2 = send_reply(f, in, res, &outarg, sizeof(outarg));
- if (res == 0 && res2 == -ENOENT)
- cancel_lookup(f, outarg.nodeid, in->unique);
-
+ if (req->f->op.symlink)
+ req->f->op.symlink(req, link, nodeid, name);
+ else
+ fuse_reply_err(req, ENOSYS);
}
-static void do_rename(struct fuse_ll *f, struct fuse_in_header *in,
- struct fuse_rename_in *inarg)
+static void do_rename(fuse_req_t req, fuse_ino_t nodeid,
+ struct fuse_rename_in *arg)
{
- int res;
- nodeid_t olddir = in->nodeid;
- nodeid_t newdir = inarg->newdir;
- char *oldname = PARAM(inarg);
+ char *oldname = PARAM(arg);
char *newname = oldname + strlen(oldname) + 1;
- char *oldpath;
- char *newpath;
- res = -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) {
- if (f->flags & FUSE_DEBUG) {
- printf("RENAME %s -> %s\n", oldpath, newpath);
- fflush(stdout);
- }
- res = -ENOSYS;
- if (f->op.rename) {
- res = 0;
- if (!(f->flags & FUSE_HARD_REMOVE) &&
- is_open(f, newdir, newname))
- res = hide_node(f, newpath, newdir, newname);
- if (res == 0) {
- res = f->op.rename(oldpath, newpath);
- if (res == 0)
- res = rename_node(f, olddir, oldname, newdir, newname, 0);
- }
- }
- free(newpath);
- }
- free(oldpath);
- }
- pthread_rwlock_unlock(&f->tree_lock);
- send_reply(f, in, res, NULL, 0);
+ if (req->f->op.rename)
+ req->f->op.rename(req, nodeid, oldname, arg->newdir, newname);
+ else
+ fuse_reply_err(req, ENOSYS);
}
-static void do_link(struct fuse_ll *f, struct fuse_in_header *in,
+static void do_link(fuse_req_t req, fuse_ino_t nodeid,
struct fuse_link_in *arg)
{
- int res;
- int res2;
- char *oldpath;
- char *newpath;
- char *name = PARAM(arg);
- struct fuse_entry_out outarg;
-
- res = -ENOENT;
- pthread_rwlock_rdlock(&f->tree_lock);
- oldpath = get_path(f, arg->oldnodeid);
- if (oldpath != NULL) {
- newpath = get_path_name(f, in->nodeid, name);
- if (newpath != NULL) {
- if (f->flags & FUSE_DEBUG) {
- printf("LINK %s\n", newpath);
- fflush(stdout);
- }
- res = -ENOSYS;
- if (f->op.link && f->op.getattr) {
- res = f->op.link(oldpath, newpath);
- if (res == 0)
- res = lookup_path(f, in->nodeid, in->unique, name,
- newpath, &outarg);
- }
- free(newpath);
- }
- free(oldpath);
- }
- pthread_rwlock_unlock(&f->tree_lock);
- res2 = send_reply(f, in, res, &outarg, sizeof(outarg));
- if (res == 0 && res2 == -ENOENT)
- cancel_lookup(f, outarg.nodeid, in->unique);
+ if (req->f->op.link)
+ req->f->op.link(req, arg->oldnodeid, nodeid, PARAM(arg));
+ else
+ fuse_reply_err(req, ENOSYS);
}
-static void do_open(struct fuse_ll *f, struct fuse_in_header *in,
+static void do_open(fuse_req_t req, fuse_ino_t nodeid,
struct fuse_open_in *arg)
{
- int res;
- char *path;
- struct fuse_open_out outarg;
struct fuse_file_info fi;
- memset(&outarg, 0, sizeof(outarg));
memset(&fi, 0, sizeof(fi));
fi.flags = arg->flags;
- res = -ENOENT;
- pthread_rwlock_rdlock(&f->tree_lock);
- path = get_path(f, in->nodeid);
- if (path != NULL) {
- res = -ENOSYS;
- if (f->op.open) {
- if (!f->compat)
- res = f->op.open(path, &fi);
- else
- res = ((struct fuse_operations_compat2 *) &f->op)->open(path, fi.flags);
- }
- }
- if (res == 0) {
- int res2;
- outarg.fh = fi.fh;
- if (f->flags & FUSE_DEBUG) {
- printf("OPEN[%lu] flags: 0x%x\n", fi.fh, arg->flags);
- fflush(stdout);
- }
-
- pthread_mutex_lock(&f->lock);
- res2 = send_reply(f, in, res, &outarg, SIZEOF_COMPAT(f, fuse_open_out));
- if(res2 == -ENOENT) {
- /* The open syscall was interrupted, so it must be cancelled */
- if(f->op.release) {
- if (!f->compat)
- f->op.release(path, &fi);
- else
- ((struct fuse_operations_compat2 *) &f->op)->release(path, fi.flags);
- }
- } else {
- struct node *node = get_node(f, in->nodeid);
- node->open_count ++;
- }
- pthread_mutex_unlock(&f->lock);
- } else
- send_reply(f, in, res, NULL, 0);
- if (path)
- free(path);
- pthread_rwlock_unlock(&f->tree_lock);
+ if (req->f->op.open)
+ req->f->op.open(req, nodeid, &fi);
+ else
+ fuse_reply_err(req, ENOSYS);
}
-static void do_flush(struct fuse_ll *f, struct fuse_in_header *in,
- struct fuse_flush_in *arg)
+static void do_read(fuse_req_t req, fuse_ino_t nodeid,
+ struct fuse_read_in *arg)
{
- char *path;
- int res;
struct fuse_file_info fi;
memset(&fi, 0, sizeof(fi));
fi.fh = arg->fh;
- res = -ENOENT;
- pthread_rwlock_rdlock(&f->tree_lock);
- path = get_path(f, in->nodeid);
- if (path != NULL) {
- if (f->flags & FUSE_DEBUG) {
- printf("FLUSH[%lu]\n", (unsigned long) arg->fh);
- fflush(stdout);
- }
- res = -ENOSYS;
- if (f->op.flush)
- res = f->op.flush(path, &fi);
- free(path);
- }
- pthread_rwlock_unlock(&f->tree_lock);
- send_reply(f, in, res, NULL, 0);
+
+ if (req->f->op.read)
+ req->f->op.read(req, nodeid, arg->size, arg->offset, &fi);
+ else
+ fuse_reply_err(req, ENOSYS);
}
-static void do_release(struct fuse_ll *f, struct fuse_in_header *in,
- struct fuse_release_in *arg)
+static void do_write(fuse_req_t req, fuse_ino_t nodeid,
+ struct fuse_write_in *arg)
{
- struct node *node;
- char *path;
struct fuse_file_info fi;
- int unlink_hidden;
memset(&fi, 0, sizeof(fi));
- fi.flags = arg->flags;
fi.fh = arg->fh;
+ fi.writepage = arg->write_flags & 1;
- pthread_mutex_lock(&f->lock);
- node = get_node(f, in->nodeid);
- assert(node->open_count > 0);
- --node->open_count;
- unlink_hidden = (node->is_hidden && !node->open_count);
- pthread_mutex_unlock(&f->lock);
-
- pthread_rwlock_rdlock(&f->tree_lock);
- path = get_path(f, in->nodeid);
- if (f->flags & FUSE_DEBUG) {
- printf("RELEASE[%lu] flags: 0x%x\n", fi.fh, fi.flags);
- fflush(stdout);
- }
- if (f->op.release) {
- if (!f->compat)
- f->op.release(path ? path : "-", &fi);
- else if (path)
- ((struct fuse_operations_compat2 *) &f->op)->release(path, fi.flags);
- }
-
- if(unlink_hidden && path)
- f->op.unlink(path);
-
- if (path)
- free(path);
- pthread_rwlock_unlock(&f->tree_lock);
-
- send_reply(f, in, 0, NULL, 0);
+ if (req->f->op.write)
+ req->f->op.write(req, nodeid, PARAM(arg), arg->size, arg->offset, &fi);
+ else
+ fuse_reply_err(req, ENOSYS);
}
-static void do_read(struct fuse_ll *f, struct fuse_in_header *in,
- struct fuse_read_in *arg)
+static void do_flush(fuse_req_t req, fuse_ino_t nodeid,
+ struct fuse_flush_in *arg)
{
- int res;
- char *path;
- size_t size;
- char *buf;
struct fuse_file_info fi;
- buf = (char *) malloc(arg->size);
- if (buf == NULL) {
- send_reply(f, in, -ENOMEM, NULL, 0);
- return;
- }
-
memset(&fi, 0, sizeof(fi));
fi.fh = arg->fh;
- res = -ENOENT;
- pthread_rwlock_rdlock(&f->tree_lock);
- path = get_path(f, in->nodeid);
- if (path != NULL) {
- if (f->flags & FUSE_DEBUG) {
- printf("READ[%lu] %u bytes from %llu\n",
- (unsigned long) arg->fh, arg->size, arg->offset);
- fflush(stdout);
- }
-
- res = -ENOSYS;
- if (f->op.read)
- res = f->op.read(path, buf, arg->size, arg->offset, &fi);
- free(path);
- }
- pthread_rwlock_unlock(&f->tree_lock);
-
- size = 0;
- if (res >= 0) {
- size = res;
- res = 0;
- if (f->flags & FUSE_DEBUG) {
- printf(" READ[%lu] %u bytes\n", (unsigned long) arg->fh,
- size);
- fflush(stdout);
- }
- }
-
- send_reply(f, in, res, buf, size);
- free(buf);
+ if (req->f->op.flush)
+ req->f->op.flush(req, nodeid, &fi);
+ else
+ fuse_reply_err(req, ENOSYS);
}
-static void do_write(struct fuse_ll *f, struct fuse_in_header *in,
- struct fuse_write_in *arg)
+static void do_release(fuse_req_t req, fuse_ino_t nodeid,
+ struct fuse_release_in *arg)
{
- int res;
- char *path;
- struct fuse_write_out outarg;
struct fuse_file_info fi;
memset(&fi, 0, sizeof(fi));
+ fi.flags = arg->flags;
fi.fh = arg->fh;
- fi.writepage = arg->write_flags & 1;
- res = -ENOENT;
- pthread_rwlock_rdlock(&f->tree_lock);
- path = get_path(f, in->nodeid);
- if (path != NULL) {
- if (f->flags & FUSE_DEBUG) {
- printf("WRITE%s[%lu] %u bytes to %llu\n",
- (arg->write_flags & 1) ? "PAGE" : "",
- (unsigned long) arg->fh, arg->size, arg->offset);
- fflush(stdout);
- }
+ if (req->f->op.release)
+ req->f->op.release(req, nodeid, &fi);
+ else
+ fuse_reply_err(req, ENOSYS);
+}
- res = -ENOSYS;
- if (f->op.write)
- res = f->op.write(path, PARAM(arg), arg->size, arg->offset, &fi);
- free(path);
- }
- pthread_rwlock_unlock(&f->tree_lock);
+static void do_fsync(fuse_req_t req, fuse_ino_t nodeid,
+ struct fuse_fsync_in *inarg)
+{
+ struct fuse_file_info fi;
- memset(&outarg, 0, sizeof(outarg));
- if (res >= 0) {
- outarg.size = res;
- res = 0;
- }
+ memset(&fi, 0, sizeof(fi));
+ fi.fh = inarg->fh;
- send_reply(f, in, res, &outarg, SIZEOF_COMPAT(f, fuse_write_out));
+ if (req->f->op.fsync)
+ req->f->op.fsync(req, nodeid, inarg->fsync_flags & 1, &fi);
+ else
+ fuse_reply_err(req, ENOSYS);
}
-static int default_statfs(struct statfs *buf)
+static void do_opendir(fuse_req_t req, fuse_ino_t nodeid,
+ struct fuse_open_in *arg)
{
- buf->f_namelen = 255;
- buf->f_bsize = 512;
- return 0;
-}
+ struct fuse_file_info fi;
-static void convert_statfs_compat(struct fuse_statfs_compat1 *compatbuf,
- struct statfs *statfs)
-{
- statfs->f_bsize = compatbuf->block_size;
- statfs->f_blocks = compatbuf->blocks;
- statfs->f_bfree = compatbuf->blocks_free;
- statfs->f_bavail = compatbuf->blocks_free;
- statfs->f_files = compatbuf->files;
- statfs->f_ffree = compatbuf->files_free;
- statfs->f_namelen = compatbuf->namelen;
+ memset(&fi, 0, sizeof(fi));
+ fi.flags = arg->flags;
+
+ if (req->f->op.opendir)
+ req->f->op.opendir(req, nodeid, &fi);
+ else
+ fuse_reply_err(req, ENOSYS);
}
-static void convert_statfs(struct statfs *statfs, struct fuse_kstatfs *kstatfs)
+static void do_readdir(fuse_req_t req, fuse_ino_t nodeid,
+ struct fuse_read_in *arg)
{
- kstatfs->bsize = statfs->f_bsize;
- kstatfs->blocks = statfs->f_blocks;
- kstatfs->bfree = statfs->f_bfree;
- kstatfs->bavail = statfs->f_bavail;
- kstatfs->files = statfs->f_files;
- kstatfs->ffree = statfs->f_ffree;
- kstatfs->namelen = statfs->f_namelen;
+ struct fuse_file_info fi;
+
+ memset(&fi, 0, sizeof(fi));
+ fi.fh = arg->fh;
+
+ if (req->f->op.readdir)
+ req->f->op.readdir(req, nodeid, arg->size, arg->offset, &fi);
+ else
+ fuse_reply_err(req, ENOSYS);
}
-static void do_statfs(struct fuse_ll *f, struct fuse_in_header *in)
+static void do_releasedir(fuse_req_t req, fuse_ino_t nodeid,
+ struct fuse_release_in *arg)
{
- int res;
- struct fuse_statfs_out arg;
- struct statfs buf;
-
- memset(&buf, 0, sizeof(struct statfs));
- if (f->op.statfs) {
- if (!f->compat || f->compat > 11)
- res = f->op.statfs("/", &buf);
- else {
- struct fuse_statfs_compat1 compatbuf;
- memset(&compatbuf, 0, sizeof(struct fuse_statfs_compat1));
- res = ((struct fuse_operations_compat1 *) &f->op)->statfs(&compatbuf);
- if (res == 0)
- convert_statfs_compat(&compatbuf, &buf);
- }
- }
- else
- res = default_statfs(&buf);
+ struct fuse_file_info fi;
- if (res == 0)
- convert_statfs(&buf, &arg.st);
+ memset(&fi, 0, sizeof(fi));
+ fi.flags = arg->flags;
+ fi.fh = arg->fh;
- send_reply(f, in, res, &arg, sizeof(arg));
+ if (req->f->op.releasedir)
+ req->f->op.releasedir(req, nodeid, &fi);
+ else
+ fuse_reply_err(req, ENOSYS);
}
-static void do_fsync(struct fuse_ll *f, struct fuse_in_header *in,
- struct fuse_fsync_in *inarg)
+static void do_fsyncdir(fuse_req_t req, fuse_ino_t nodeid,
+ struct fuse_fsync_in *inarg)
{
- int res;
- char *path;
struct fuse_file_info fi;
memset(&fi, 0, sizeof(fi));
fi.fh = inarg->fh;
- res = -ENOENT;
- pthread_rwlock_rdlock(&f->tree_lock);
- path = get_path(f, in->nodeid);
- if (path != NULL) {
- if (f->flags & FUSE_DEBUG) {
- printf("FSYNC[%lu]\n", (unsigned long) inarg->fh);
- fflush(stdout);
- }
- res = -ENOSYS;
- if (f->op.fsync)
- res = f->op.fsync(path, inarg->fsync_flags & 1, &fi);
- free(path);
- }
- pthread_rwlock_unlock(&f->tree_lock);
- send_reply(f, in, res, NULL, 0);
+ if (req->f->op.fsyncdir)
+ req->f->op.fsyncdir(req, nodeid, inarg->fsync_flags & 1, &fi);
+ else
+ fuse_reply_err(req, ENOSYS);
+}
+
+static void do_statfs(fuse_req_t req, fuse_ino_t nodeid)
+{
+ if (req->f->op.statfs)
+ res = req->f->op.statfs(req, nodeid);
+ else
+ fuse_reply_err(req, ENOSYS);
}
static void do_setxattr(struct fuse_ll *f, struct fuse_in_header *in,
send_reply(f, in, 0, &outarg, sizeof(outarg));
}
-static struct fuse_dirhandle *get_dirhandle(unsigned long fh)
-{
- return (struct fuse_dirhandle *) fh;
-}
-
-static void do_opendir(struct fuse_ll *f, struct fuse_in_header *in,
- struct fuse_open_in *arg)
-{
- int res;
- struct fuse_open_out outarg;
- struct fuse_dirhandle *dh;
-
- dh = (struct fuse_dirhandle *) malloc(sizeof(struct fuse_dirhandle));
- if (dh == NULL) {
- send_reply(f, in, -ENOMEM, NULL, 0);
- return;
- }
- memset(dh, 0, sizeof(struct fuse_dirhandle));
- dh->fuse = f;
- dh->contents = NULL;
- dh->len = 0;
- dh->filled = 0;
- dh->nodeid = in->nodeid;
- mutex_init(&dh->lock);
-
- memset(&outarg, 0, sizeof(outarg));
- outarg.fh = (unsigned long) dh;
-
- if (f->op.opendir) {
- struct fuse_file_info fi;
- char *path;
-
- memset(&fi, 0, sizeof(fi));
- fi.flags = arg->flags;
-
- res = -ENOENT;
- pthread_rwlock_rdlock(&f->tree_lock);
- path = get_path(f, in->nodeid);
- if (path != NULL) {
- res = f->op.opendir(path, &fi);
- dh->fh = fi.fh;
- }
- if (res == 0) {
- int res2;
- pthread_mutex_lock(&f->lock);
- res2 = send_reply(f, in, res, &outarg, SIZEOF_COMPAT(f, fuse_open_out));
- if(res2 == -ENOENT) {
- /* The opendir syscall was interrupted, so it must be
- cancelled */
- if(f->op.releasedir)
- f->op.releasedir(path, &fi);
- pthread_mutex_destroy(&dh->lock);
- free(dh);
- }
- pthread_mutex_unlock(&f->lock);
- } else {
- send_reply(f, in, res, NULL, 0);
- free(dh);
- }
- free(path);
- pthread_rwlock_unlock(&f->tree_lock);
- } else
- send_reply(f, in, 0, &outarg, SIZEOF_COMPAT(f, fuse_open_out));
-}
-
-static int fill_dir_common(struct fuse_dirhandle *dh, const char *name,
- int type, ino_t ino, off_t off)
-{
- unsigned namelen = strlen(name);
- unsigned entlen;
- unsigned entsize;
- unsigned padlen;
- unsigned newlen;
- unsigned char *newptr;
-
- if (!(dh->fuse->flags & FUSE_USE_INO)) {
- ino = (ino_t) -1;
- if (dh->fuse->flags & FUSE_READDIR_INO) {
- struct node *node;
- pthread_mutex_lock(&dh->fuse->lock);
- node = lookup_node(dh->fuse, dh->nodeid, name);
- if (node)
- ino = (ino_t) node->nodeid;
- pthread_mutex_unlock(&dh->fuse->lock);
- }
- }
-
- if (namelen > FUSE_NAME_MAX)
- namelen = FUSE_NAME_MAX;
- else if (!namelen) {
- dh->error = -EIO;
- return 1;
- }
-
- entlen = (dh->fuse->major == 5 ?
- FUSE_NAME_OFFSET_COMPAT5 : FUSE_NAME_OFFSET) + namelen;
- entsize = FUSE_DIRENT_ALIGN(entlen);
- padlen = entsize - entlen;
- newlen = dh->len + entsize;
- if (off && dh->fuse->major != 5) {
- dh->filled = 0;
- if (newlen > dh->needlen)
- return 1;
- }
-
- newptr = realloc(dh->contents, newlen);
- if (!newptr) {
- dh->error = -ENOMEM;
- return 1;
- }
- dh->contents = newptr;
- if (dh->fuse->major == 5) {
- struct fuse_dirent_compat5 *dirent;
- dirent = (struct fuse_dirent_compat5 *) (dh->contents + dh->len);
- dirent->ino = ino;
- dirent->namelen = namelen;
- dirent->type = type;
- strncpy(dirent->name, name, namelen);
- } else {
- struct fuse_dirent *dirent;
- dirent = (struct fuse_dirent *) (dh->contents + dh->len);
- dirent->ino = ino;
- dirent->off = off ? off : newlen;
- dirent->namelen = namelen;
- dirent->type = type;
- strncpy(dirent->name, name, namelen);
- }
- if (padlen)
- memset(dh->contents + dh->len + entlen, 0, padlen);
- dh->len = newlen;
- return 0;
-}
-
-static int fill_dir(void *buf, const char *name, const struct stat *stat,
- off_t off)
-{
- int type = stat ? (stat->st_mode & 0170000) >> 12 : 0;
- ino_t ino = stat ? stat->st_ino : (ino_t) -1;
- return fill_dir_common(buf, name, type, ino, off);
-}
-
-static int fill_dir_old(struct fuse_dirhandle *dh, const char *name, int type,
- ino_t ino)
-{
- fill_dir_common(dh, name, type, ino, 0);
- return dh->error;
-}
-
-static int readdir_fill(struct fuse_ll *f, struct fuse_in_header *in,
- struct fuse_read_in *arg, struct fuse_dirhandle *dh)
-{
- int err = -ENOENT;
- char *path;
- pthread_rwlock_rdlock(&f->tree_lock);
- path = get_path(f, in->nodeid);
- if (path != NULL) {
- struct fuse_file_info fi;
-
- memset(&fi, 0, sizeof(fi));
- fi.fh = dh->fh;
-
- dh->len = 0;
- dh->error = 0;
- dh->needlen = arg->size;
- dh->filled = 1;
- err = -ENOSYS;
- if (f->op.readdir) {
- off_t offset = f->major == 5 ? 0 : arg->offset;
- err = f->op.readdir(path, dh, fill_dir, offset, &fi);
- } else if (f->op.getdir)
- err = f->op.getdir(path, dh, fill_dir_old);
- if (!err)
- err = dh->error;
- if (err)
- dh->filled = 0;
- free(path);
- }
- pthread_rwlock_unlock(&f->tree_lock);
- return err;
-}
-
-static void do_readdir(struct fuse_ll *f, struct fuse_in_header *in,
- struct fuse_read_in *arg)
-{
- int err = 0;
- struct fuse_dirhandle *dh = get_dirhandle(arg->fh);
- size_t size = 0;
- unsigned char *buf = NULL;
-
- pthread_mutex_lock(&dh->lock);
- if (!dh->filled) {
- err = readdir_fill(f, in, arg, dh);
- if (err)
- goto out;
- }
- if (dh->filled) {
- if (arg->offset < dh->len) {
- size = arg->size;
- if (arg->offset + size > dh->len)
- size = dh->len - arg->offset;
- buf = dh->contents + arg->offset;
- }
- } else {
- size = dh->len;
- buf = dh->contents;
- }
-
- out:
- send_reply(f, in, err, buf, size);
- pthread_mutex_unlock(&dh->lock);
-}
-
-static void do_releasedir(struct fuse_ll *f, struct fuse_in_header *in,
- struct fuse_release_in *arg)
-{
- struct fuse_dirhandle *dh = get_dirhandle(arg->fh);
- if (f->op.releasedir) {
- char *path;
- struct fuse_file_info fi;
-
- memset(&fi, 0, sizeof(fi));
- fi.fh = dh->fh;
-
- pthread_rwlock_rdlock(&f->tree_lock);
- path = get_path(f, in->nodeid);
- f->op.releasedir(path ? path : "-", &fi);
- 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);
- send_reply(f, in, 0, NULL, 0);
-}
-
-static void do_fsyncdir(struct fuse_ll *f, struct fuse_in_header *in,
- struct fuse_fsync_in *inarg)
-{
- int res;
- char *path;
- struct fuse_dirhandle *dh = get_dirhandle(inarg->fh);
- struct fuse_file_info fi;
-
- memset(&fi, 0, sizeof(fi));
- fi.fh = dh->fh;
-
- res = -ENOENT;
- pthread_rwlock_rdlock(&f->tree_lock);
- path = get_path(f, in->nodeid);
- if (path != NULL) {
- res = -ENOSYS;
- if (f->op.fsyncdir)
- res = f->op.fsyncdir(path, inarg->fsync_flags & 1, &fi);
- free(path);
- }
- pthread_rwlock_unlock(&f->tree_lock);
- send_reply(f, in, res, NULL, 0);
-}
-
static void free_cmd(struct fuse_cmd *cmd)
{
free(cmd->buf);
switch (in->opcode) {
case FUSE_LOOKUP:
- do_lookup(f, in, (char *) inarg);
+ do_lookup(f, req, nodeid, (char *) inarg);
break;
+ do_forget(f, in, (struct fuse_forget_in *) inarg);
+ break;
+ }
case FUSE_GETATTR:
do_getattr(f, in);
break;
}
cmd->buflen = res;
- /* Forget is special, it can be done without messing with threads. */
- if (in->opcode == FUSE_FORGET) {
- do_forget(f, in, (struct fuse_forget_in *) inarg);
- free_cmd(cmd);
- return NULL;
- }
return cmd;
}
projects / qemu-gpiodev / libfuse.git / commitdiff