/* fshelp.h -- Filesystem helper functions */ /* * GRUB -- GRand Unified Bootloader * Copyright (C) 2004 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 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. 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, write to the Free Software * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA. */ #ifndef GRUB_FSHELP_HEADER #define GRUB_FSHELP_HEADER 1 #include #include #include 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) (unsigned long sector, unsigned offset, unsigned length), int pos, unsigned int len, char *buf, int (*get_block) (grub_fshelp_node_t node, int block), unsigned int filesize, int log2blocksize); #endif /* ! GRUB_FSHELP_HEADER */