encfs/fs/encfs.h

/*****************************************************************************
 * Author:   Valient Gough <vgough@pobox.com>
 *
 *****************************************************************************
 * Copyright (c) 2003, Valient Gough
 *
 * This program is free software: you can redistribute it and/or modify it
 * under the terms of the GNU Lesser General Public License as published by the
 * Free Software Foundation, either version 3 of the License, or (at your
 * option) any later version.  
 *
 * This program is distributed in the hope that it will be useful, but WITHOUT
 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
 * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU Lesser General Public License
 * for more details.
 *
 * You should have received a copy of the GNU Lesser General Public License
 * along with this program.  If not, see <http://www.gnu.org/licenses/>.
 */

#ifndef _encfs_incl_
#define _encfs_incl_

#include "base/config.h"
#include <fuse.h>
#include <unistd.h>

#if defined(HAVE_SYS_XATTR_H) | defined(HAVE_ATTR_XATTR_H)
#define HAVE_XATTR
#endif

#ifndef linux
#include <cerrno>

static __inline int setfsuid(uid_t uid)
{
    uid_t olduid = geteuid();

    seteuid(uid);

    if (errno != EINVAL)
        errno = 0;

    return olduid;
}

static __inline int setfsgid(gid_t gid)
{
    gid_t oldgid = getegid();

    setegid(gid);

    if (errno != EINVAL)
        errno = 0;

    return oldgid;
}
#endif

namespace encfs {

int encfs_getattr(const char *path, struct stat *stbuf);
int encfs_fgetattr(const char *path, struct stat *stbuf, 
	struct fuse_file_info *fi);
int encfs_readlink(const char *path, char *buf, size_t size);
int encfs_getdir(const char *path, fuse_dirh_t h, fuse_dirfil_t filler);
int encfs_mknod(const char *path, mode_t mode, dev_t rdev);
int encfs_mkdir(const char *path, mode_t mode);
int encfs_unlink(const char *path);
int encfs_rmdir(const char *path);
int encfs_symlink(const char *from, const char *to);
int encfs_rename(const char *from, const char *to);
int encfs_link(const char *from, const char *to);
int encfs_chmod(const char *path, mode_t mode);
int encfs_chown(const char *path, uid_t uid, gid_t gid);
int encfs_truncate(const char *path, off_t size);
int encfs_ftruncate(const char *path, off_t size,
	struct fuse_file_info *fi);
int encfs_utime(const char *path, struct utimbuf *buf);
int encfs_open(const char *path, struct fuse_file_info *info);
int encfs_release(const char *path, struct fuse_file_info *info);
int encfs_read(const char *path, char *buf, size_t size, off_t offset,
	struct fuse_file_info *info);
int encfs_write(const char *path, const char *buf, size_t size, off_t offset,
	struct fuse_file_info *info);
int encfs_statfs(const char *, struct statvfs *fst);
int encfs_flush(const char *, struct fuse_file_info *info);
int encfs_fsync(const char *path, int flags, struct fuse_file_info *info);

#ifdef HAVE_XATTR

#  ifdef XATTR_ADD_OPT
int encfs_setxattr( const char *path, const char *name, const char *value, 
	            size_t size, int flags, uint32_t position);
int encfs_getxattr( const char *path, const char *name, char *value, 
	            size_t size, uint32_t position );
#  else
int encfs_setxattr( const char *path, const char *name, const char *value, 
	            size_t size, int flags);
int encfs_getxattr( const char *path, const char *name, char *value, 
	            size_t size );
#  endif

int encfs_listxattr( const char *path, char *list, size_t size );
int encfs_removexattr( const char *path, const char *name );
#endif

int encfs_utimens( const char *path, const struct timespec ts[2] );

}  // namespace encfs

#endif