diff options
Diffstat (limited to 'libfusepp/fuseAppBase.h')
| -rw-r--r-- | libfusepp/fuseAppBase.h | 162 |
1 files changed, 162 insertions, 0 deletions
diff --git a/libfusepp/fuseAppBase.h b/libfusepp/fuseAppBase.h new file mode 100644 index 0000000..a320d36 --- /dev/null +++ b/libfusepp/fuseAppBase.h @@ -0,0 +1,162 @@ +#ifndef FUSEAPP_H +#define FUSEAPP_H + +#define FUSE_USE_VERSION 26 +#include <fuse.h> +#include <typeinfo> +#include <exception> +#include <stdio.h> +#include <errno.h> + +class FuseAppBase { + public: + FuseAppBase(); + virtual ~FuseAppBase() = 0; + virtual void * init (struct fuse_conn_info * info); + virtual int opt_parse(void *, const char * arg, int key, struct fuse_args *); + virtual int access(const char *, int); + virtual int chmod(const char *, mode_t); + virtual int chown(const char *, uid_t, gid_t); + virtual int create(const char *, mode_t, struct fuse_file_info *); + virtual int fgetattr(const char *, struct stat *, struct fuse_file_info *); + virtual int flush(const char *, struct fuse_file_info *); + virtual int fsync(const char *, int, struct fuse_file_info *); + virtual int fsyncdir(const char *, int, struct fuse_file_info *); + virtual int ftruncate(const char *, off_t, struct fuse_file_info *); + virtual int getattr(const char *, struct stat *); + virtual int getxattr(const char *, const char *, char *, size_t); + virtual int link(const char *, const char *); + virtual int listxattr(const char *, char *, size_t); + virtual int mkdir(const char *, mode_t); + virtual int mknod(const char *, mode_t, dev_t); + virtual int open(const char *, struct fuse_file_info *); + virtual int opendir(const char *, struct fuse_file_info *); + virtual int read(const char *, char *, size_t, off_t, struct fuse_file_info *); + virtual int readdir(const char *, void *, fuse_fill_dir_t, off_t, struct fuse_file_info *); + virtual int readlink(const char *, char *, size_t); + virtual int release(const char *, struct fuse_file_info *); + virtual int releasedir(const char *, struct fuse_file_info *); + virtual int removexattr(const char *, const char *); + virtual int rename(const char *, const char *); + virtual int rmdir(const char *); + virtual int setxattr(const char *, const char *, const char *, size_t, int); + virtual int statfs(const char *, struct statvfs *); + virtual int symlink(const char *, const char *); + virtual int truncate(const char *, off_t); + virtual int unlink(const char *); + virtual int write(const char *, const char *, size_t, off_t, struct fuse_file_info *); + virtual int lock(const char *, struct fuse_file_info *, int cmd, struct flock *); + virtual int utimens(const char *, const struct timespec tv[2]); + virtual int bmap(const char *, size_t blocksize, uint64_t *idx); + virtual int ioctl(const char *, int cmd, void *arg, struct fuse_file_info *, unsigned int flags, void * data); + virtual int poll(const char *, struct fuse_file_info *, struct fuse_pollhandle *, unsigned *); + virtual int write_buf(const char *, struct fuse_bufvec *buf, off_t off, struct fuse_file_info *); + virtual int read_buf(const char *, struct fuse_bufvec **bufp, size_t size, off_t off, struct fuse_file_info *); + virtual int flock(const char *, struct fuse_file_info *, int op); + virtual int fallocate(const char *, int, off_t, off_t, struct fuse_file_info *); + virtual int onError(const std::exception & err) throw(); + +#define GetHelper(func) getHelper<&FuseAppBase::func>(typeid(&FuseAppBase::func) != typeid(&FuseApp::func)) + template <typename FuseApp> + static int run(int & argc, char** & argv, FuseApp * fa) + { + auto args = runint(argc, argv, fa); + struct fuse_operations operations = { + fuseCall<const char *, struct stat *>::GetHelper(getattr), + fuseCall<const char *, char *, size_t>::GetHelper(readlink), + NULL, // getdir deprecated + fuseCall<const char *, mode_t, dev_t>::GetHelper(mknod), + fuseCall<const char *, mode_t>::GetHelper(mkdir), + fuseCall<const char *>::GetHelper(unlink), + fuseCall<const char *>::GetHelper(rmdir), + fuseCall<const char *, const char *>::GetHelper(symlink), + fuseCall<const char *, const char *>::GetHelper(rename), + fuseCall<const char *, const char *>::GetHelper(link), + fuseCall<const char *, mode_t>::GetHelper(chmod), + fuseCall<const char *, uid_t, gid_t>::GetHelper(chown), + fuseCall<const char *, off_t>::GetHelper(truncate), + NULL, // utime deprecated + fuseCall<const char *, struct fuse_file_info *>::GetHelper(open), + fuseCall<const char *, char *, size_t, off_t, struct fuse_file_info *>::GetHelper(read), + fuseCall<const char *, const char *, size_t, off_t, struct fuse_file_info *>::GetHelper(write), + fuseCall<const char *, struct statvfs *>::GetHelper(statfs), + fuseCall<const char *, struct fuse_file_info *>::GetHelper(flush), + fuseCall<const char *, struct fuse_file_info *>::GetHelper(release), + fuseCall<const char *, int, struct fuse_file_info *>::GetHelper(fsync), + fuseCall<const char *, const char *, const char *, size_t, int>::GetHelper(setxattr), + fuseCall<const char *, const char *, char *, size_t>::GetHelper(getxattr), + fuseCall<const char *, char *, size_t>::GetHelper(listxattr), + fuseCall<const char *, const char *>::GetHelper(removexattr), + fuseCall<const char *, struct fuse_file_info *>::GetHelper(opendir), + fuseCall<const char *, void *, fuse_fill_dir_t, off_t, struct fuse_file_info *>::GetHelper(readdir), + fuseCall<const char *, struct fuse_file_info *>::GetHelper(releasedir), + fuseCall<const char *, int, struct fuse_file_info *>::GetHelper(fsyncdir), + fuseInit, + fuseDestroy, + fuseCall<const char *, int>::GetHelper(access), + fuseCall<const char *, mode_t, struct fuse_file_info *>::GetHelper(create), + fuseCall<const char *, off_t, struct fuse_file_info *>::GetHelper(ftruncate), + fuseCall<const char *, struct stat *, struct fuse_file_info *>::GetHelper(fgetattr), +#if (FUSE_MINOR_VERSION >= 6) + fuseCall<const char *, struct fuse_file_info *, int, struct flock *>::GetHelper(lock), + fuseCall<const char *, const struct timespec [2]>::GetHelper(utimens), + fuseCall<const char *, size_t, uint64_t *>::GetHelper(bmap), +#if (FUSE_MINOR_VERSION >= 8) + 0, // flag_nullpath_ok +#if (FUSE_MINOR_VERSION >= 9) + 0, // flag_nopath + 0, // flag_utime_omit_ok +#endif + 0, // flag_reserved + fuseCall<const char *, int, void *, struct fuse_file_info *, unsigned int, void *>::GetHelper(ioctl), + fuseCall<const char *, struct fuse_file_info *, struct fuse_pollhandle *, unsigned *>::GetHelper(poll), +#if (FUSE_MINOR_VERSION >= 9) + fuseCall<const char *, struct fuse_bufvec *, off_t, struct fuse_file_info *>::GetHelper(write_buf), + fuseCall<const char *, struct fuse_bufvec **, size_t, off_t, struct fuse_file_info *>::GetHelper(read_buf), + fuseCall<const char *, struct fuse_file_info *, int>::GetHelper(flock), + fuseCall<const char *, int, off_t, off_t, struct fuse_file_info *>::GetHelper(fallocate), +#endif +#endif +#endif + }; + return fuse_main(args.argc, args.argv, &operations, fa); + } + private: + static struct fuse_args runint(int &, char ** &, FuseAppBase *); + static void * fuseInit(struct fuse_conn_info *conn); + static void fuseDestroy(void *); + + template <typename... Args> + class fuseCall { + public: + typedef int (*WrapperFunc)(Args...); + template <int (FuseAppBase::*b)(Args...)> + static WrapperFunc getHelper(bool implemented) + { + auto func = &helper<b>; + return implemented ? func : NULL; + } + template <int (FuseAppBase::*f)(Args...)> + static int helper(Args ... a) + { + try { + return (fuseApp->*f)(a...); + } + catch (const std::exception & ex) { + if (int rtn = fuseApp->onError(ex)) { + return rtn; + } + return helper<f>(a...); + } + catch (...) { + fprintf(stderr, "Unknown exception calling %s\n", typeid(f).name()); + return -ENOSYS; + } + } + }; + + static FuseAppBase * fuseApp; +}; + +#endif + |