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/*
* vmfs-tools - Tools to access VMFS filesystems
* Copyright (C) 2009 Christophe Fillot <cf@utc.fr>
* Copyright (C) 2009 Mike Hommey <mh@glandium.org>
*
* This program is free software: you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation, either version 2 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.
*
* You should have received a copy of the GNU General Public License
* along with this program. If not, see <http://www.gnu.org/licenses/>.
*/
#ifndef VMFS_FILE_H
#define VMFS_FILE_H
#include <sys/stat.h>
/* File types (in inode and directory entries) */
#define VMFS_FILE_TYPE_DIR 0x02
#define VMFS_FILE_TYPE_FILE 0x03
#define VMFS_FILE_TYPE_SYMLINK 0x04
#define VMFS_FILE_TYPE_META 0x05
#define VMFS_FILE_TYPE_RDM 0x06
/* File flags */
#define VMFS_FILE_FLAG_RW 0x01
/* === VMFS file abstraction === */
struct vmfs_file {
vmfs_inode_t *inode;
u_int flags;
};
static inline const vmfs_fs_t *vmfs_file_get_fs(vmfs_file_t *f)
{
if (f && f->inode)
return(f->inode->fs);
return NULL;
}
static inline mode_t vmfs_file_type2mode(uint32_t type) {
switch (type) {
case VMFS_FILE_TYPE_DIR:
return S_IFDIR;
case VMFS_FILE_TYPE_SYMLINK:
return S_IFLNK;
default:
return S_IFREG;
}
}
/* Get file size */
static inline uint64_t vmfs_file_get_size(const vmfs_file_t *f)
{
return(f->inode->size);
}
/* Open a file based on an inode buffer */
vmfs_file_t *vmfs_file_open_from_inode(const vmfs_inode_t *inode);
/* Open a file based on a block id */
vmfs_file_t *vmfs_file_open_from_blkid(const vmfs_fs_t *fs,uint32_t blk_id);
/* Open a file */
vmfs_file_t *vmfs_file_open_at(vmfs_dir_t *dir,const char *path);
/* Create a new file entry */
int vmfs_file_create(vmfs_dir_t *d,const char *name,mode_t mode,
vmfs_inode_t **inode);
/* Create a file */
vmfs_file_t *vmfs_file_create_at(vmfs_dir_t *dir,const char *path,mode_t mode);
/* Close a file */
int vmfs_file_close(vmfs_file_t *f);
/* Read data from a file at the specified position */
ssize_t vmfs_file_pread(vmfs_file_t *f,u_char *buf,size_t len,off_t pos);
/* Write data to a file at the specified position */
ssize_t vmfs_file_pwrite(vmfs_file_t *f,u_char *buf,size_t len,off_t pos);
/* Dump a file */
int vmfs_file_dump(vmfs_file_t *f,off_t pos,uint64_t len,FILE *fd_out);
/* Get file status */
int vmfs_file_fstat(const vmfs_file_t *f,struct stat *buf);
/* Get file file status (follow symlink) */
int vmfs_file_stat_at(vmfs_dir_t *dir,const char *path,struct stat *buf);
/* Get file file status (do not follow symlink) */
int vmfs_file_lstat_at(vmfs_dir_t *dir,const char *path,struct stat *buf);
/* Truncate a file (using a file descriptor) */
int vmfs_file_truncate(vmfs_file_t *f,off_t length);
/* Truncate a file (using a path) */
int vmfs_file_truncate_at(vmfs_dir_t *dir,const char *path,off_t length);
/* Change permissions of a file */
int vmfs_file_chmod(vmfs_file_t *f,mode_t mode);
/* Change permissions of a file (using a path) */
int vmfs_file_chmod_at(vmfs_dir_t *dir,const char *path,mode_t mode);
/* Delete a file */
int vmfs_file_delete(vmfs_dir_t *dir,const char *name);
#endif
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