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synced 2024-02-13 08:34:06 +08:00
Move the ext2 filesystem handler into its own new package /packages/ext2-files.
Signed-off-by: Mark Cave-Ayland <mark.cave-ayland@siriusit.co.uk> git-svn-id: svn://coreboot.org/openbios/trunk/openbios-devel@813 f158a5a8-5612-0410-a976-696ce0be7e32
This commit is contained in:
Mark Cave-Ayland
committed by
Mark Cave-Ayland
Mark Cave-Ayland
parent
8a5ccc08b3
commit
40ed0faad9
@@ -1,15 +1,22 @@
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/*
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* /packages/ext2-files
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*
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* (c) 2008-2009 Laurent Vivier <Laurent@lvivier.info>
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* (c) 2010 Mark Cave-Ayland <mark.cave-ayland@siriusit.co.uk>
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*
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* This file has been copied from EMILE, http://emile.sf.net
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*
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*/
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#include "config.h"
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#include "libopenbios/bindings.h"
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#include "libext2.h"
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#include "ext2_utils.h"
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#include "fs/fs.h"
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#include "libc/vsprintf.h"
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#include "libc/diskio.h"
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extern void ext2_init( void );
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typedef struct {
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enum { FILE, DIR } type;
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@@ -19,14 +26,14 @@ typedef struct {
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};
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} ext2_COMMON;
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static void
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umount( fs_ops_t *fs )
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{
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ext2_VOLUME *volume = (ext2_VOLUME *)fs->fs_data;
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typedef struct {
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ext2_VOLUME *volume;
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ext2_COMMON *common;
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} ext2_info_t;
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ext2_umount( volume );
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}
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DECLARE_NODE( ext2, 0, sizeof(ext2_info_t), "+/packages/ext2-files" );
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/*
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static const int days_month[12] =
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{ 31, 28, 31, 30, 31, 30, 31, 31, 30, 31, 30, 31 };
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static const int days_month_leap[12] =
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@@ -97,115 +104,177 @@ dir_fs ( file_desc_t *fd)
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forth_printf("%s\n", entry->name);
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}
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}
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*/
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static file_desc_t *
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open_path( fs_ops_t *fs, const char *path )
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{
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ext2_VOLUME *volume = (ext2_VOLUME *)fs->fs_data;
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ext2_COMMON *common;
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common = (ext2_COMMON*)malloc(sizeof(*common));
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if (common == NULL)
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return NULL;
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common->dir = ext2_opendir(volume, path);
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if (common->dir == NULL) {
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common->file = ext2_open(volume, path);
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if (common->file == NULL) {
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free(common);
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return NULL;
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}
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common->type = FILE;
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return (file_desc_t *)common;
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}
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common->type = DIR;
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return (file_desc_t *)common;
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}
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static char *
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get_path( file_desc_t *fd, char *buf, int size )
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{
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ext2_COMMON *common =(ext2_COMMON *)fd;
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if (common->type != FILE)
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return NULL;
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strncpy(buf, common->file->path, size);
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return buf;
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}
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static int
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file_lseek( file_desc_t *fd, off_t offs, int whence )
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{
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ext2_COMMON *common =(ext2_COMMON *)fd;
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if (common->type != FILE)
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return -1;
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return ext2_lseek(common->file, offs, whence);
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}
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/************************************************************************/
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/* Standard package methods */
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/************************************************************************/
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/* ( -- success? ) */
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static void
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file_close( file_desc_t *fd )
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ext2_files_open( ext2_info_t *mi )
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{
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ext2_COMMON *common =(ext2_COMMON *)fd;
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int fd;
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char *path = my_args_copy();
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fd = open_ih( my_parent() );
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if ( fd == -1 ) {
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free( path );
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RET( 0 );
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}
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mi->volume = ext2_mount(fd);
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if (!mi->volume) {
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RET( 0 );
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}
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mi->common = (ext2_COMMON*)malloc(sizeof(ext2_COMMON));
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if (mi->common == NULL)
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RET( 0 );
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mi->common->dir = ext2_opendir(mi->volume, path);
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if (mi->common->dir == NULL) {
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mi->common->file = ext2_open(mi->volume, path);
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if (mi->common->file == NULL) {
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free(mi->common);
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RET( 0 );
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}
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mi->common->type = FILE;
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RET( -1 );
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}
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mi->common->type = DIR;
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RET( -1 );
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}
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/* ( -- ) */
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static void
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ext2_files_close( ext2_info_t *mi )
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{
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ext2_COMMON *common = mi->common;
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if (common->type == FILE)
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ext2_close(common->file);
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else if (common->type == DIR)
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ext2_closedir(common->dir);
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free(common);
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ext2_umount(mi->volume);
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}
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static int
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file_read( file_desc_t *fd, void *buf, size_t count )
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/* ( buf len -- actlen ) */
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static void
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ext2_files_read( ext2_info_t *mi )
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{
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ext2_COMMON *common =(ext2_COMMON *)fd;
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int count = POP();
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char *buf = (char *)POP();
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ext2_COMMON *common = mi->common;
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if (common->type != FILE)
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RET( -1 );
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RET ( ext2_read( common->file, buf, count ) );
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}
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/* ( pos.d -- status ) */
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static void
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ext2_files_seek( ext2_info_t *mi )
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{
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llong pos = DPOP();
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int offs = (int)pos;
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int whence = SEEK_SET;
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int ret;
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ext2_COMMON *common = mi->common;
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if (common->type != FILE)
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return -1;
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RET( -1 );
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return ext2_read(common->file, buf, count);
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ret = ext2_lseek(common->file, offs, whence);
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if (ret)
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RET( -1 );
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else
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RET( 0 );
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}
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static const char *
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get_fstype( fs_ops_t *fs)
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/* ( addr -- size ) */
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static void
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ext2_files_load( ext2_info_t *mi )
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{
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return "EXT2";
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char *buf = (char *)POP();
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int count;
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ext2_COMMON *common = mi->common;
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if (common->type != FILE)
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RET( -1 );
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/* Seek to the end in order to get the file size */
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ext2_lseek(common->file, 0, SEEK_END);
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count = common->file->offset;
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ext2_lseek(common->file, 0, SEEK_SET);
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RET ( ext2_read( common->file, buf, count ) );
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}
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static const fs_ops_t ext2_ops = {
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.dir = dir_fs,
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.close_fs = umount,
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/* ( -- cstr ) */
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static void
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ext2_files_get_path( ext2_info_t *mi )
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{
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ext2_COMMON *common = mi->common;
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.open_path = open_path,
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.get_path = get_path,
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.close = file_close,
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.read = file_read,
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.lseek = file_lseek,
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if (common->type != FILE)
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RET( 0 );
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.get_fstype = get_fstype,
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RET( (ucell) strdup(common->file->path) );
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}
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/* ( -- cstr ) */
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static void
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ext2_files_get_fstype( ext2_info_t *mi )
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{
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PUSH( (ucell)strdup("ext2") );
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}
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/* static method, ( pos.d ih -- flag? ) */
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static void
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ext2_files_probe( ext2_info_t *dummy )
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{
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ihandle_t ih = POP_ih();
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llong offs = DPOP();
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int fd, ret = 0;
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fd = open_ih(ih);
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if (ext2_probe(fd, offs))
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ret = -1;
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close_io(fd);
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RET (ret);
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}
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static void
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ext2_initializer( ext2_info_t *dummy )
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{
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fword("register-fs-package");
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}
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NODE_METHODS( ext2 ) = {
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{ "probe", ext2_files_probe },
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{ "open", ext2_files_open },
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{ "close", ext2_files_close },
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{ "read", ext2_files_read },
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{ "seek", ext2_files_seek },
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{ "load", ext2_files_load },
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/* special */
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{ "get-path", ext2_files_get_path },
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{ "get-fstype", ext2_files_get_fstype },
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{ NULL, ext2_initializer },
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};
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int fs_ext2_open(int fd, fs_ops_t *fs)
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void
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ext2_init( void )
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{
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ext2_VOLUME *volume;
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volume = ext2_mount(fd);
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if (volume == NULL)
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return -1;
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*fs = ext2_ops;
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fs->fs_data = volume;
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return 0;
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}
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int fs_ext2_probe(int fd, llong offs)
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{
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if (ext2_probe(fd, offs))
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return 0;
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return -1;
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REGISTER_NODE( ext2 );
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}
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