diff options
Diffstat (limited to 'include/grub/fshelp.h')
| -rw-r--r-- | include/grub/fshelp.h | 91 |
1 files changed, 91 insertions, 0 deletions
diff --git a/include/grub/fshelp.h b/include/grub/fshelp.h new file mode 100644 index 0000000..eb1ba4f --- /dev/null +++ b/include/grub/fshelp.h @@ -0,0 +1,91 @@ +/* fshelp.h -- Filesystem helper functions */ +/* + * GRUB -- GRand Unified Bootloader + * Copyright (C) 2004,2005,2006,2007,2008 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> +#include <grub/disk.h> + +typedef struct grub_fshelp_node *grub_fshelp_node_t; + +#define GRUB_FSHELP_CASE_INSENSITIVE 0x100 +#define GRUB_FSHELP_TYPE_MASK 0xff +#define GRUB_FSHELP_FLAGS_MASK 0x100 + +enum grub_fshelp_filetype + { + GRUB_FSHELP_UNKNOWN, + GRUB_FSHELP_REG, + GRUB_FSHELP_DIR, + GRUB_FSHELP_SYMLINK + }; + +typedef int (*grub_fshelp_iterate_dir_hook_t) (const char *filename, + enum grub_fshelp_filetype filetype, + grub_fshelp_node_t node, + void *data); + +/* 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. */ +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, + grub_fshelp_iterate_dir_hook_t hook, + void *hook_data), + char *(*read_symlink) (grub_fshelp_node_t node), + enum grub_fshelp_filetype expect); + + +grub_err_t +EXPORT_FUNC(grub_fshelp_find_file_lookup) (const char *path, + grub_fshelp_node_t rootnode, + grub_fshelp_node_t *foundnode, + grub_err_t (*lookup_file) (grub_fshelp_node_t dir, + const char *name, + grub_fshelp_node_t *foundnode, + enum grub_fshelp_filetype *foundtype), + 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, + grub_disk_read_hook_t read_hook, + void *read_hook_data, + grub_off_t pos, grub_size_t len, char *buf, + grub_disk_addr_t (*get_block) (grub_fshelp_node_t node, + grub_disk_addr_t block), + grub_off_t filesize, int log2blocksize, + grub_disk_addr_t blocks_start); + +#endif /* ! GRUB_FSHELP_HEADER */ |