diff options
Diffstat (limited to 'qemu/roms/openbios/fs/grubfs/grubfs_fs.c')
| -rw-r--r-- | qemu/roms/openbios/fs/grubfs/grubfs_fs.c | 398 |
1 files changed, 0 insertions, 398 deletions
diff --git a/qemu/roms/openbios/fs/grubfs/grubfs_fs.c b/qemu/roms/openbios/fs/grubfs/grubfs_fs.c deleted file mode 100644 index acd2a6441..000000000 --- a/qemu/roms/openbios/fs/grubfs/grubfs_fs.c +++ /dev/null @@ -1,398 +0,0 @@ -/* - * /packages/grubfs-files - * - * grub vfs - * - * Copyright (C) 2004 Stefan Reinauer - * Copyright (C) 2004 Samuel Rydh - * Copyright (C) 2010 Mark Cave-Ayland - * - * inspired by HFS code from Samuel Rydh - * - * This program 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 - * - */ - -#include "config.h" -#include "libopenbios/bindings.h" -#include "fs/fs.h" -#include "filesys.h" -#include "glue.h" -#include "libc/diskio.h" -#include "libc/vsprintf.h" - -extern void grubfs_init( void ); - -/************************************************************************/ -/* grub GLOBALS (horrible... but difficult to fix) */ -/************************************************************************/ - -/* the grub drivers want these: */ -int filepos; -int filemax; -grub_error_t errnum; -char FSYS_BUF[FSYS_BUFLEN]; - -/* these are not even used by us, instead - * the grub fs drivers want them: - */ -int fsmax; -void (*disk_read_hook) (int, int, int); -void (*disk_read_func) (int, int, int); - - -/************************************************************************/ -/* filsystem table */ -/************************************************************************/ - -typedef struct fsys_entry { - const char *name; - int (*mount_func) (void); - int (*read_func) (char *buf, int len); - int (*dir_func) (char *dirname); - void (*close_func) (void); - int (*embed_func) (int *start_sector, int needed_sectors); -} fsys_entry_t; - -static const struct fsys_entry fsys_table[] = { -# ifdef CONFIG_FSYS_FAT - {"fat", fat_mount, fat_read, fat_dir, NULL, NULL}, -# endif -# ifdef CONFIG_FSYS_EXT2FS - {"ext2fs", ext2fs_mount, ext2fs_read, ext2fs_dir, NULL, NULL}, -# endif -# ifdef CONFIG_FSYS_MINIX - {"minix", minix_mount, minix_read, minix_dir, NULL, NULL}, -# endif -# ifdef CONFIG_FSYS_REISERFS - {"reiserfs", reiserfs_mount, reiserfs_read, reiserfs_dir, NULL, reiserfs_embed}, -# endif -# ifdef CONFIG_FSYS_JFS - {"jfs", jfs_mount, jfs_read, jfs_dir, NULL, jfs_embed}, -# endif -# ifdef CONFIG_FSYS_XFS - {"xfs", xfs_mount, xfs_read, xfs_dir, NULL, NULL}, -# endif -# ifdef CONFIG_FSYS_UFS - {"ufs", ufs_mount, ufs_read, ufs_dir, NULL, ufs_embed}, -# endif -# ifdef CONFIG_FSYS_ISO9660 - {"iso9660", iso9660_mount, iso9660_read, iso9660_dir, NULL, NULL}, -# endif -# ifdef CONFIG_FSYS_NTFS - {"ntfs", ntfs_mount, ntfs_read, ntfs_dir, NULL, NULL}, -# endif -# ifdef CONFIG_FSYS_AFFS - {"affs", affs_mount, affs_read, affs_dir, NULL, NULL}, -# endif -}; - -/* We don't provide a file search mechanism (yet) */ -typedef struct { - unsigned long pos; - unsigned long len; - const char *path; -} grubfile_t; - -typedef struct { - const struct fsys_entry *fsys; - grubfile_t *fd; - int dev_fd; - long long offset; /* Offset added onto each device read; should only ever be non-zero - when probing a partition for a filesystem */ -} grubfs_t; - -typedef struct { - grubfs_t *gfs; -} grubfs_info_t; - -/* Static block and global pointer required for I/O glue */ -static grubfs_t dummy_fs; -static grubfs_t *curfs = &dummy_fs; - -DECLARE_NODE( grubfs, 0, sizeof(grubfs_info_t), "+/packages/grubfs-files" ); - - -/************************************************************************/ -/* I/O glue (called by grub source) */ -/************************************************************************/ - -int -devread( unsigned long sector, unsigned long byte_offset, - unsigned long byte_len, void *buf ) -{ - long long offs = (long long)sector * 512 + byte_offset; - -#ifdef CONFIG_DEBUG_FS - //printk("devread s=%x buf=%x, fd=%x\n",sector, buf, curfs->dev_fd); -#endif - - if( !curfs ) { -#ifdef CONFIG_DEBUG_FS - printk("devread: fsys == NULL!\n"); -#endif - return -1; - } - - if( seek_io(curfs->dev_fd, offs + curfs->offset) ) { -#ifdef CONFIG_DEBUG_FS - printk("seek failure\n"); -#endif - return -1; - } - return (read_io(curfs->dev_fd, buf, byte_len) == byte_len) ? 1:0; -} - -int -file_read( void *buf, unsigned long len ) -{ - if (filepos < 0 || filepos > filemax) - filepos = filemax; - if (len > filemax-filepos) - len = filemax - filepos; - errnum = 0; - return curfs->fsys->read_func( buf, len ); -} - - -/************************************************************************/ -/* Standard package methods */ -/************************************************************************/ - -/* ( -- success? ) */ -static void -grubfs_files_open( grubfs_info_t *mi ) -{ - int fd, i; - char *path = my_args_copy(); - char *s; - - fd = open_ih( my_parent() ); - if ( fd == -1 ) { - free( path ); - RET( 0 ); - } - - mi->gfs = &dummy_fs; - - for (i = 0; i < sizeof(fsys_table)/sizeof(fsys_table[0]); i++) { -#ifdef CONFIG_DEBUG_FS - printk("Trying %s\n", fsys_table[i].name); -#endif - if (fsys_table[i].mount_func()) { - const fsys_entry_t *fsys = &fsys_table[i]; -#ifdef CONFIG_DEBUG_FS - printk("Mounted %s\n", fsys->name); -#endif - mi->gfs = malloc(sizeof(grubfs_t)); - mi->gfs->fsys = fsys; - mi->gfs->dev_fd = fd; - mi->gfs->offset = 0; - - s = path; - while (*s) { - if(*s=='\\') *s='/'; - s++; - } -#ifdef CONFIG_DEBUG_FS - printk("Path=%s\n",path); -#endif - if (!mi->gfs->fsys->dir_func((char *) path)) { - forth_printf("File not found\n"); - RET( 0 ); - } - - mi->gfs->fd = malloc(sizeof(grubfile_t)); - mi->gfs->fd->pos = filepos; - mi->gfs->fd->len = filemax; - mi->gfs->fd->path = strdup(path); - - RET( -1 ); - } - } -#ifdef CONFIG_DEBUG_FS - printk("Unknown filesystem type\n"); -#endif - - RET( 0 ); -} - -/* ( -- ) */ -static void -grubfs_files_close( grubfs_info_t *mi ) -{ - grubfile_t *gf = mi->gfs->fd; - - if (gf->path) - free((void *)(gf->path)); - free(gf); - - filepos = 0; - filemax = 0; -} - -/* ( buf len -- actlen ) */ -static void -grubfs_files_read( grubfs_info_t *mi ) -{ - int count = POP(); - char *buf = (char *)cell2pointer(POP()); - - grubfile_t *file = mi->gfs->fd; - int ret; - - filepos = file->pos; - filemax = file->len; - - if (count > filemax - filepos) - count = filemax - filepos; - - ret = mi->gfs->fsys->read_func(buf, count); - - file->pos = filepos; - - RET( ret ); -} - -/* ( pos.d -- status ) */ -static void -grubfs_files_seek( grubfs_info_t *mi ) -{ - long long pos = DPOP(); - int offs = (int)pos; - int whence = SEEK_SET; - - grubfile_t *file = mi->gfs->fd; - unsigned long newpos; - - switch( whence ) { - case SEEK_END: - if (offs < 0 && (unsigned long) -offs > file->len) - newpos = 0; - else - newpos = file->len + offs; - break; - default: - case SEEK_SET: - newpos = (offs < 0) ? 0 : offs; - break; - } - - if (newpos > file->len) - newpos = file->len; - - file->pos = newpos; - - if (newpos) - RET( -1 ); - else - RET( 0 ); -} - -/* ( addr -- size ) */ -static void -grubfs_files_load( grubfs_info_t *mi ) -{ - char *buf = (char *)cell2pointer(POP()); - int count, ret; - - grubfile_t *file = mi->gfs->fd; - count = file->len; - - ret = mi->gfs->fsys->read_func(buf, count); - file->pos = filepos; - - RET( ret ); -} - -/* ( -- cstr ) */ -static void -grubfs_files_get_path( grubfs_info_t *mi ) -{ - grubfile_t *file = mi->gfs->fd; - const char *path = file->path; - - RET( pointer2cell(strdup(path)) ); -} - -/* ( -- cstr ) */ -static void -grubfs_files_get_fstype( grubfs_info_t *mi ) -{ - grubfs_t *gfs = mi->gfs; - - PUSH( pointer2cell(strdup(gfs->fsys->name)) ); -} - - -/* static method, ( pos.d ih -- flag? ) */ -static void -grubfs_files_probe( grubfs_info_t *dummy ) -{ - ihandle_t ih = POP_ih(); - long long offs = DPOP(); - int i; - - curfs->dev_fd = open_ih(ih); - if (curfs->dev_fd == -1) { - RET( -1 ); - } - curfs->offset = offs; - - for (i = 0; i < sizeof(fsys_table)/sizeof(fsys_table[0]); i++) { -#ifdef CONFIG_DEBUG_FS - printk("Probing for %s\n", fsys_table[i].name); -#endif - if (fsys_table[i].mount_func()) { - RET( -1 ); - } - } - -#ifdef CONFIG_DEBUG_FS - printk("Unknown filesystem type\n"); -#endif - - close_io(curfs->dev_fd); - - RET ( 0 ); -} - -/* static method, ( pathstr len ihandle -- ) */ -static void -grubfs_files_dir( grubfs_info_t *dummy ) -{ - forth_printf("dir method not implemented for grubfs filesystem\n"); - POP(); - POP(); - POP(); -} - -static void -grubfs_initializer( grubfs_info_t *dummy ) -{ - fword("register-fs-package"); -} - -NODE_METHODS( grubfs ) = { - { "probe", grubfs_files_probe }, - { "open", grubfs_files_open }, - { "close", grubfs_files_close }, - { "read", grubfs_files_read }, - { "seek", grubfs_files_seek }, - { "load", grubfs_files_load }, - { "dir", grubfs_files_dir }, - - /* special */ - { "get-path", grubfs_files_get_path }, - { "get-fstype", grubfs_files_get_fstype }, - - { NULL, grubfs_initializer }, -}; - -void -grubfs_init( void ) -{ - REGISTER_NODE( grubfs ); -} |