79 lines
2.9 KiB
C
79 lines
2.9 KiB
C
/* fshelp.h -- Filesystem helper functions */
|
|
/*
|
|
* GRUB -- GRand Unified Bootloader
|
|
* Copyright (C) 2004,2005,2006,2007 Free Software Foundation, Inc.
|
|
*
|
|
* GRUB 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 3 of the License, or
|
|
* (at your option) any later version.
|
|
*
|
|
* GRUB 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 General Public License for more details.
|
|
*
|
|
* You should have received a copy of the GNU General Public License
|
|
* along with GRUB. If not, see <http://www.gnu.org/licenses/>.
|
|
*/
|
|
|
|
#ifndef GRUB_FSHELP_HEADER
|
|
#define GRUB_FSHELP_HEADER 1
|
|
|
|
#include <grub/types.h>
|
|
#include <grub/symbol.h>
|
|
#include <grub/err.h>
|
|
|
|
typedef struct grub_fshelp_node *grub_fshelp_node_t;
|
|
|
|
enum grub_fshelp_filetype
|
|
{
|
|
GRUB_FSHELP_UNKNOWN,
|
|
GRUB_FSHELP_REG,
|
|
GRUB_FSHELP_DIR,
|
|
GRUB_FSHELP_SYMLINK
|
|
};
|
|
|
|
/* Lookup the node PATH. The node ROOTNODE describes the root of the
|
|
directory tree. The node found is returned in FOUNDNODE, which is
|
|
either a ROOTNODE or a new malloc'ed node. ITERATE_DIR is used to
|
|
iterate over all directory entries in the current node.
|
|
READ_SYMLINK is used to read the symlink if a node is a symlink.
|
|
EXPECTTYPE is the type node that is expected by the called, an
|
|
error is generated if the node is not of the expected type. Make
|
|
sure you use the NESTED_FUNC_ATTR macro for HOOK, this is required
|
|
because GCC has a nasty bug when using regparm=3. */
|
|
grub_err_t
|
|
EXPORT_FUNC(grub_fshelp_find_file) (const char *path,
|
|
grub_fshelp_node_t rootnode,
|
|
grub_fshelp_node_t *foundnode,
|
|
int (*iterate_dir) (grub_fshelp_node_t dir,
|
|
int NESTED_FUNC_ATTR
|
|
(*hook) (const char *filename,
|
|
enum grub_fshelp_filetype filetype,
|
|
grub_fshelp_node_t node)),
|
|
char *(*read_symlink) (grub_fshelp_node_t node),
|
|
enum grub_fshelp_filetype expect);
|
|
|
|
|
|
/* Read LEN bytes from the file NODE on disk DISK into the buffer BUF,
|
|
beginning with the block POS. READ_HOOK should be set before
|
|
reading a block from the file. GET_BLOCK is used to translate file
|
|
blocks to disk blocks. The file is FILESIZE bytes big and the
|
|
blocks have a size of LOG2BLOCKSIZE (in log2). */
|
|
grub_ssize_t
|
|
EXPORT_FUNC(grub_fshelp_read_file) (grub_disk_t disk, grub_fshelp_node_t node,
|
|
void (*read_hook) (grub_disk_addr_t sector,
|
|
unsigned offset,
|
|
unsigned length),
|
|
int pos, grub_size_t len, char *buf,
|
|
int (*get_block) (grub_fshelp_node_t node,
|
|
int block),
|
|
grub_off_t filesize, int log2blocksize);
|
|
|
|
unsigned int
|
|
EXPORT_FUNC(grub_fshelp_log2blksize) (unsigned int blksize,
|
|
unsigned int *pow);
|
|
|
|
#endif /* ! GRUB_FSHELP_HEADER */
|