mirror of
https://github.com/feather-wallet/feather.git
synced 2024-10-31 17:37:43 +00:00
262 lines
9.5 KiB
C
262 lines
9.5 KiB
C
#ifndef SQFS_DLOPEN_H
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#define SQFS_DLOPEN_H
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//#define ENABLE_DLOPEN
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#ifdef ENABLE_DLOPEN
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#include <dlfcn.h>
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#include <time.h>
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#include <utime.h>
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#include <fcntl.h>
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#include <inttypes.h>
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#include <stdlib.h>
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#include <stdio.h>
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#include <sys/types.h>
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#include <sys/stat.h>
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#include <sys/statvfs.h>
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#include <sys/uio.h>
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/*** dlopen() stuff ***/
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#define LIBNAME "libfuse.so.2"
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void *libhandle;
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int have_libloaded;
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const char *load_library_errmsg;
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#define LOAD_LIBRARY \
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if (have_libloaded != 1) { \
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if (!(libhandle = dlopen(LIBNAME, RTLD_LAZY))) { \
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fprintf(stderr, "dlopen(): error loading " LIBNAME "\n\n%s", load_library_errmsg ); \
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exit(1); \
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} else { \
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have_libloaded = 1; \
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} \
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}
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#define STRINGIFY(x) #x
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#define LOAD_SYMBOL(type,x,param) \
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type (*dl_##x) param; \
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*(void **) (&dl_##x) = dlsym(libhandle, STRINGIFY(x)); \
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if (dlerror()) { \
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fprintf(stderr, "dlsym(): error loading symbol from " LIBNAME "\n\n%s", load_library_errmsg ); \
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CLOSE_LIBRARY; \
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exit(1); \
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}
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#define DL(x) dl_##x
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#define CLOSE_LIBRARY dlclose(libhandle);
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/*** libfuse stuff ***/
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#define FUSE_ROOT_ID 1
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#define FUSE_ARGS_INIT(argc, argv) { argc, argv, 0 }
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#define FUSE_OPT_KEY(templ, key) { templ, -1U, key }
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#define FUSE_OPT_KEY_OPT -1
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#define FUSE_OPT_KEY_NONOPT -2
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#define FUSE_OPT_END { NULL, 0, 0 }
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enum fuse_buf_flags {
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FUSE_BUF_IS_FD = (1 << 1),
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FUSE_BUF_FD_SEEK = (1 << 2),
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FUSE_BUF_FD_RETRY = (1 << 3),
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};
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typedef unsigned long fuse_ino_t;
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typedef struct fuse_req *fuse_req_t;
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struct fuse_chan;
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struct fuse_pollhandle;
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struct fuse_args {
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int argc;
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char **argv;
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int allocated;
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};
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typedef int (*fuse_fill_dir_t) (void *buf, const char *name, const struct stat *stbuf, off_t off);
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typedef int (*fuse_opt_proc_t)(void *data, const char *arg, int key, struct fuse_args *outargs);
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typedef struct fuse_dirhandle *fuse_dirh_t;
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typedef int (*fuse_dirfil_t) (fuse_dirh_t h, const char *name, int type, ino_t ino);
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struct fuse_file_info {
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int flags;
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unsigned long fh_old;
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int writepage;
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unsigned int direct_io : 1;
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unsigned int keep_cache : 1;
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unsigned int flush : 1;
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unsigned int nonseekable : 1;
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unsigned int flock_release : 1;
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unsigned int padding : 27;
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uint64_t fh;
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uint64_t lock_owner;
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};
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struct fuse_entry_param {
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fuse_ino_t ino;
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unsigned long generation;
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struct stat attr;
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double attr_timeout;
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double entry_timeout;
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};
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struct fuse_opt {
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const char *templ;
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unsigned long offset;
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int value;
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};
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struct fuse_forget_data {
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uint64_t ino;
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uint64_t nlookup;
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};
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struct fuse_conn_info {
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unsigned proto_major;
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unsigned proto_minor;
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unsigned async_read;
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unsigned max_write;
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unsigned max_readahead;
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unsigned capable;
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unsigned want;
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unsigned max_background;
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unsigned congestion_threshold;
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unsigned reserved[23];
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};
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struct fuse_buf {
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size_t size;
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enum fuse_buf_flags flags;
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void *mem;
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int fd;
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off_t pos;
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};
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struct fuse_bufvec {
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size_t count;
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size_t idx;
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size_t off;
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struct fuse_buf buf[1];
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};
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struct fuse_context {
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struct fuse *fuse;
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uid_t uid;
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gid_t gid;
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pid_t pid;
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void *private_data;
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mode_t umask;
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};
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struct fuse_operations {
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int (*getattr) (const char *, struct stat *);
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int (*readlink) (const char *, char *, size_t);
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int (*getdir) (const char *, fuse_dirh_t, fuse_dirfil_t);
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int (*mknod) (const char *, mode_t, dev_t);
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int (*mkdir) (const char *, mode_t);
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int (*unlink) (const char *);
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int (*rmdir) (const char *);
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int (*symlink) (const char *, const char *);
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int (*rename) (const char *, const char *);
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int (*link) (const char *, const char *);
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int (*chmod) (const char *, mode_t);
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int (*chown) (const char *, uid_t, gid_t);
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int (*truncate) (const char *, off_t);
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int (*utime) (const char *, struct utimbuf *);
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int (*open) (const char *, struct fuse_file_info *);
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int (*read) (const char *, char *, size_t, off_t, struct fuse_file_info *);
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int (*write) (const char *, const char *, size_t, off_t, struct fuse_file_info *);
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int (*statfs) (const char *, struct statvfs *);
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int (*flush) (const char *, struct fuse_file_info *);
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int (*release) (const char *, struct fuse_file_info *);
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int (*fsync) (const char *, int, struct fuse_file_info *);
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int (*setxattr) (const char *, const char *, const char *, size_t, int);
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int (*getxattr) (const char *, const char *, char *, size_t);
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int (*listxattr) (const char *, char *, size_t);
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int (*removexattr) (const char *, const char *);
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int (*opendir) (const char *, struct fuse_file_info *);
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int (*readdir) (const char *, void *, fuse_fill_dir_t, off_t, struct fuse_file_info *);
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int (*releasedir) (const char *, struct fuse_file_info *);
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int (*fsyncdir) (const char *, int, struct fuse_file_info *);
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void *(*init) (struct fuse_conn_info *conn);
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void (*destroy) (void *);
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int (*access) (const char *, int);
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int (*create) (const char *, mode_t, struct fuse_file_info *);
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int (*ftruncate) (const char *, off_t, struct fuse_file_info *);
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int (*fgetattr) (const char *, struct stat *, struct fuse_file_info *);
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int (*lock) (const char *, struct fuse_file_info *, int cmd, struct flock *);
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int (*utimens) (const char *, const struct timespec tv[2]);
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int (*bmap) (const char *, size_t blocksize, uint64_t *idx);
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unsigned int flag_nullpath_ok:1;
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unsigned int flag_nopath:1;
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unsigned int flag_utime_omit_ok:1;
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unsigned int flag_reserved:29;
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int (*ioctl) (const char *, int cmd, void *arg, struct fuse_file_info *, unsigned int flags, void *data);
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int (*poll) (const char *, struct fuse_file_info *, struct fuse_pollhandle *ph, unsigned *reventsp);
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int (*write_buf) (const char *, struct fuse_bufvec *buf, off_t off, struct fuse_file_info *);
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int (*read_buf) (const char *, struct fuse_bufvec **bufp, size_t size, off_t off, struct fuse_file_info *);
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int (*flock) (const char *, struct fuse_file_info *, int op);
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int (*fallocate) (const char *, int, off_t, off_t, struct fuse_file_info *);
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};
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struct fuse_lowlevel_ops {
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void (*init) (void *userdata, struct fuse_conn_info *conn);
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void (*destroy) (void *userdata);
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void (*lookup) (fuse_req_t req, fuse_ino_t parent, const char *name);
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void (*forget) (fuse_req_t req, fuse_ino_t ino, unsigned long nlookup);
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void (*getattr) (fuse_req_t req, fuse_ino_t ino, struct fuse_file_info *fi);
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void (*setattr) (fuse_req_t req, fuse_ino_t ino, struct stat *attr, int to_set, struct fuse_file_info *fi);
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void (*readlink) (fuse_req_t req, fuse_ino_t ino);
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void (*mknod) (fuse_req_t req, fuse_ino_t parent, const char *name, mode_t mode, dev_t rdev);
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void (*mkdir) (fuse_req_t req, fuse_ino_t parent, const char *name, mode_t mode);
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void (*unlink) (fuse_req_t req, fuse_ino_t parent, const char *name);
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void (*rmdir) (fuse_req_t req, fuse_ino_t parent, const char *name);
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void (*symlink) (fuse_req_t req, const char *link, fuse_ino_t parent, const char *name);
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void (*rename) (fuse_req_t req, fuse_ino_t parent, const char *name, fuse_ino_t newparent, const char *newname);
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void (*link) (fuse_req_t req, fuse_ino_t ino, fuse_ino_t newparent, const char *newname);
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void (*open) (fuse_req_t req, fuse_ino_t ino, struct fuse_file_info *fi);
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void (*read) (fuse_req_t req, fuse_ino_t ino, size_t size, off_t off, struct fuse_file_info *fi);
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void (*write) (fuse_req_t req, fuse_ino_t ino, const char *buf, size_t size, off_t off, struct fuse_file_info *fi);
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void (*flush) (fuse_req_t req, fuse_ino_t ino, struct fuse_file_info *fi);
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void (*release) (fuse_req_t req, fuse_ino_t ino, struct fuse_file_info *fi);
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void (*fsync) (fuse_req_t req, fuse_ino_t ino, int datasync, struct fuse_file_info *fi);
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void (*opendir) (fuse_req_t req, fuse_ino_t ino, struct fuse_file_info *fi);
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void (*readdir) (fuse_req_t req, fuse_ino_t ino, size_t size, off_t off, struct fuse_file_info *fi);
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void (*releasedir) (fuse_req_t req, fuse_ino_t ino, struct fuse_file_info *fi);
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void (*fsyncdir) (fuse_req_t req, fuse_ino_t ino, int datasync, struct fuse_file_info *fi);
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void (*statfs) (fuse_req_t req, fuse_ino_t ino);
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void (*setxattr) (fuse_req_t req, fuse_ino_t ino, const char *name, const char *value, size_t size, int flags);
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void (*getxattr) (fuse_req_t req, fuse_ino_t ino, const char *name, size_t size);
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void (*listxattr) (fuse_req_t req, fuse_ino_t ino, size_t size);
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void (*removexattr) (fuse_req_t req, fuse_ino_t ino, const char *name);
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void (*access) (fuse_req_t req, fuse_ino_t ino, int mask);
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void (*create) (fuse_req_t req, fuse_ino_t parent, const char *name, mode_t mode, struct fuse_file_info *fi);
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void (*getlk) (fuse_req_t req, fuse_ino_t ino, struct fuse_file_info *fi, struct flock *lock);
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void (*setlk) (fuse_req_t req, fuse_ino_t ino, struct fuse_file_info *fi, struct flock *lock, int sleep);
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void (*bmap) (fuse_req_t req, fuse_ino_t ino, size_t blocksize, uint64_t idx);
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void (*ioctl) (fuse_req_t req, fuse_ino_t ino, int cmd, void *arg, struct fuse_file_info *fi, unsigned flags, const void *in_buf, size_t in_bufsz, size_t out_bufsz);
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void (*poll) (fuse_req_t req, fuse_ino_t ino, struct fuse_file_info *fi, struct fuse_pollhandle *ph);
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void (*write_buf) (fuse_req_t req, fuse_ino_t ino, struct fuse_bufvec *bufv, off_t off, struct fuse_file_info *fi);
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void (*retrieve_reply) (fuse_req_t req, void *cookie, fuse_ino_t ino, off_t offset, struct fuse_bufvec *bufv);
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void (*forget_multi) (fuse_req_t req, size_t count, struct fuse_forget_data *forgets);
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void (*flock) (fuse_req_t req, fuse_ino_t ino, struct fuse_file_info *fi, int op);
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void (*fallocate) (fuse_req_t req, fuse_ino_t ino, int mode, off_t offset, off_t length, struct fuse_file_info *fi);
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};
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#else /* !ENABLE_DLOPEN */
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#define LOAD_LIBRARY
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#define LOAD_SYMBOL(x)
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#define DL(x)
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#define CLOSE_LIBRARY
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#endif /* !ENABLE_DLOPEN */
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#endif /* SQFS_DLOPEN_H */
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