From 6e7a315eb67cb6c113cf37e1d66c4f11a51a2b3e Mon Sep 17 00:00:00 2001 From: Daniel Baumann Date: Sun, 7 Apr 2024 18:29:51 +0200 Subject: Adding upstream version 2.06. Signed-off-by: Daniel Baumann --- include/grub/fs.h | 131 ++++++++++++++++++++++++++++++++++++++++++++++++++++++ 1 file changed, 131 insertions(+) create mode 100644 include/grub/fs.h (limited to 'include/grub/fs.h') diff --git a/include/grub/fs.h b/include/grub/fs.h new file mode 100644 index 0000000..026bc3b --- /dev/null +++ b/include/grub/fs.h @@ -0,0 +1,131 @@ +/* fs.h - filesystem manager */ +/* + * GRUB -- GRand Unified Bootloader + * Copyright (C) 2002,2003,2004,2007,2008,2009 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 . + */ + +#ifndef GRUB_FS_HEADER +#define GRUB_FS_HEADER 1 + +#include +#include +#include + +#include +/* For embedding types. */ +#ifdef GRUB_UTIL +#include +#endif + +/* Forward declaration is required, because of mutual reference. */ +struct grub_file; + +struct grub_dirhook_info +{ + unsigned dir:1; + unsigned mtimeset:1; + unsigned case_insensitive:1; + unsigned inodeset:1; + grub_int64_t mtime; + grub_uint64_t inode; +}; + +typedef int (*grub_fs_dir_hook_t) (const char *filename, + const struct grub_dirhook_info *info, + void *data); + +/* Filesystem descriptor. */ +struct grub_fs +{ + /* The next filesystem. */ + struct grub_fs *next; + struct grub_fs **prev; + + /* My name. */ + const char *name; + + /* Call HOOK with each file under DIR. */ + grub_err_t (*fs_dir) (grub_device_t device, const char *path, + grub_fs_dir_hook_t hook, void *hook_data); + + /* Open a file named NAME and initialize FILE. */ + grub_err_t (*fs_open) (struct grub_file *file, const char *name); + + /* Read LEN bytes data from FILE into BUF. */ + grub_ssize_t (*fs_read) (struct grub_file *file, char *buf, grub_size_t len); + + /* Close the file FILE. */ + grub_err_t (*fs_close) (struct grub_file *file); + + /* Return the label of the device DEVICE in LABEL. The label is + returned in a grub_malloc'ed buffer and should be freed by the + caller. */ + grub_err_t (*fs_label) (grub_device_t device, char **label); + + /* Return the uuid of the device DEVICE in UUID. The uuid is + returned in a grub_malloc'ed buffer and should be freed by the + caller. */ + grub_err_t (*fs_uuid) (grub_device_t device, char **uuid); + + /* Get writing time of filesystem. */ + grub_err_t (*fs_mtime) (grub_device_t device, grub_int64_t *timebuf); + +#ifdef GRUB_UTIL + /* Determine sectors available for embedding. */ + grub_err_t (*fs_embed) (grub_device_t device, unsigned int *nsectors, + unsigned int max_nsectors, + grub_embed_type_t embed_type, + grub_disk_addr_t **sectors); + + /* Whether this filesystem reserves first sector for DOS-style boot. */ + int reserved_first_sector; + + /* Whether blocklist installs have a chance to work. */ + int blocklist_install; +#endif +}; +typedef struct grub_fs *grub_fs_t; + +/* This is special, because block lists are not files in usual sense. */ +extern struct grub_fs grub_fs_blocklist; + +/* This hook is used to automatically load filesystem modules. + If this hook loads a module, return non-zero. Otherwise return zero. + The newly loaded filesystem is assumed to be inserted into the head of + the linked list GRUB_FS_LIST through the function grub_fs_register. */ +typedef int (*grub_fs_autoload_hook_t) (void); +extern grub_fs_autoload_hook_t EXPORT_VAR(grub_fs_autoload_hook); +extern grub_fs_t EXPORT_VAR (grub_fs_list); + +#ifndef GRUB_LST_GENERATOR +static inline void +grub_fs_register (grub_fs_t fs) +{ + grub_list_push (GRUB_AS_LIST_P (&grub_fs_list), GRUB_AS_LIST (fs)); +} +#endif + +static inline void +grub_fs_unregister (grub_fs_t fs) +{ + grub_list_remove (GRUB_AS_LIST (fs)); +} + +#define FOR_FILESYSTEMS(var) FOR_LIST_ELEMENTS((var), (grub_fs_list)) + +grub_fs_t EXPORT_FUNC(grub_fs_probe) (grub_device_t device); + +#endif /* ! GRUB_FS_HEADER */ -- cgit v1.2.3