129 lines
4.3 KiB
C
129 lines
4.3 KiB
C
/* biosdisk.h - emulate biosdisk */
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/*
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* GRUB -- GRand Unified Bootloader
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* Copyright (C) 2002,2007 Free Software Foundation, Inc.
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*
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* GRUB is free software: you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation, either version 3 of the License, or
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* (at your option) any later version.
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*
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* GRUB is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with GRUB. If not, see <http://www.gnu.org/licenses/>.
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*/
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#ifndef GRUB_BIOSDISK_MACHINE_UTIL_HEADER
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#define GRUB_BIOSDISK_MACHINE_UTIL_HEADER 1
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#include <grub/disk.h>
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#include <grub/partition.h>
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#include <sys/types.h>
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#if defined (__CYGWIN__) || defined (__MINGW32__)
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#include <windows.h>
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typedef HANDLE grub_util_fd_t;
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#define GRUB_UTIL_FD_INVALID INVALID_HANDLE_VALUE
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#define GRUB_UTIL_FD_IS_VALID(x) ((x) != GRUB_UTIL_FD_INVALID)
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#define grub_util_fd_close(x) CloseHandle(x)
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#define grub_util_fd_sync(x) FlushFileBuffers(x)
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grub_util_fd_t
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grub_util_fd_open (const char *os_dev, int flags);
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#else
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typedef int grub_util_fd_t;
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#define GRUB_UTIL_FD_INVALID -1
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#define GRUB_UTIL_FD_IS_VALID(x) ((x) >= 0)
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#define grub_util_fd_close(x) close(x)
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#define grub_util_fd_sync(x) fsync(x)
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#define grub_util_fd_open(x,y) open(x,y)
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#endif
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grub_util_fd_t
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grub_util_fd_open_device (const grub_disk_t disk, grub_disk_addr_t sector, int flags,
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grub_disk_addr_t *max);
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void grub_util_biosdisk_init (const char *dev_map);
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void grub_util_biosdisk_fini (void);
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char *grub_util_biosdisk_get_grub_dev (const char *os_dev);
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const char *grub_util_biosdisk_get_osdev (grub_disk_t disk);
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int grub_util_biosdisk_is_present (const char *name);
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int grub_util_biosdisk_is_floppy (grub_disk_t disk);
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const char *
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grub_util_biosdisk_get_compatibility_hint (grub_disk_t disk);
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grub_err_t grub_util_biosdisk_flush (struct grub_disk *disk);
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grub_err_t
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grub_util_fd_seek (grub_util_fd_t fd, const char *name, grub_uint64_t sector);
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ssize_t grub_util_fd_read (grub_util_fd_t fd, char *buf, size_t len);
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ssize_t grub_util_fd_write (grub_util_fd_t fd, const char *buf, size_t len);
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grub_err_t
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grub_cryptodisk_cheat_mount (const char *sourcedev, const char *cheat);
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void grub_util_cryptodisk_print_uuid (grub_disk_t disk);
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char *
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grub_util_get_ldm (grub_disk_t disk, grub_disk_addr_t start);
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int
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grub_util_is_ldm (grub_disk_t disk);
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#ifdef GRUB_UTIL
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grub_err_t
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grub_util_ldm_embed (struct grub_disk *disk, unsigned int *nsectors,
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unsigned int max_nsectors,
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grub_embed_type_t embed_type,
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grub_disk_addr_t **sectors);
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#endif
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const char *
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grub_hostdisk_os_dev_to_grub_drive (const char *os_dev, int add);
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grub_uint64_t
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grub_util_get_fd_size (grub_util_fd_t fd, const char *name, unsigned *log_secsize);
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char *
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grub_util_get_os_disk (const char *os_dev);
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#ifdef __linux__
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int
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grub_hostdisk_linux_find_partition (char *dev, grub_disk_addr_t sector);
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#endif
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int
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grub_util_get_dm_node_linear_info (const char *dev,
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int *maj, int *min,
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grub_disk_addr_t *st);
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/* Supplied by hostdisk_*.c. */
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grub_int64_t
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grub_util_get_fd_size_os (grub_util_fd_t fd, const char *name, unsigned *log_secsize);
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/* REturns partition offset in 512B blocks. */
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grub_disk_addr_t
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grub_hostdisk_find_partition_start_os (const char *dev);
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/* Adjust device driver parameters. This function should be called just
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after successfully opening the device. For now, it simply prevents the
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floppy driver from retrying operations on failure, as otherwise the
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driver takes a while to abort when there is no floppy in the drive.
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For now it's non-nop only on NetBSD.
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*/
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void
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grub_hostdisk_configure_device_driver (grub_util_fd_t fd);
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void
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grub_hostdisk_flush_initial_buffer (const char *os_dev);
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#if defined(__FreeBSD__) || defined(__FreeBSD_kernel__) || defined(__APPLE__) || defined(__NetBSD__) || defined (__sun__) || defined(__OpenBSD__)
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#define GRUB_DISK_DEVS_ARE_CHAR 1
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#else
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#define GRUB_DISK_DEVS_ARE_CHAR 0
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#endif
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struct grub_util_hostdisk_data
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{
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char *dev;
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int access_mode;
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grub_util_fd_t fd;
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int is_disk;
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int device_map;
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};
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#endif /* ! GRUB_BIOSDISK_MACHINE_UTIL_HEADER */
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