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josh committed 2017-07-25 22:23:50 -04:00
1 parent b0132c866e
commit 692cf2fc08
22 files changed
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kernel/fs/ext2.h
+135 -1
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@@ -2,17 +2,151 @@
// ext2 filesystem driver for HOS
// Author: Josh Holtrop
// Date: 05/10/05
// Modified: 05/10/05
// Modified: 05/23/05
#ifndef __HOS_EXT2_H__
#define __HOS_EXT2_H__ __HOS_EXT2_H__
#define EXT2_MAGIC 0xEF53
#define EXT2_NAME_LEN 255
#define EXT2_I_MODE_ATTR_MASK 0x0FFF
#define EXT2_I_MODE_OX 0x0001
#define EXT2_I_MODE_OW 0x0002
#define EXT2_I_MODE_OR 0x0004
#define EXT2_I_MODE_GX 0x0008
#define EXT2_I_MODE_GW 0x0010
#define EXT2_I_MODE_GR 0x0020
#define EXT2_I_MODE_UX 0x0040
#define EXT2_I_MODE_UW 0x0080
#define EXT2_I_MODE_UR 0x0100
#define EXT2_I_MODE_STICKY 0x0200
#define EXT2_I_MODE_SGID 0x0400
#define EXT2_I_MODE_SUID 0x0800
#define EXT2_I_MODE_TYPE_MASK 0xF000
#define EXT2_I_MODE_FIFO 0x1000
#define EXT2_I_MODE_CHAR 0x2000
#define EXT2_I_MODE_DIR 0x4000
#define EXT2_I_MODE_BLOCK 0x6000
#define EXT2_I_MODE_FILE 0x8000
#define EXT2_I_MODE_SYM 0xA000
#define EXT2_I_MODE_SOCK 0xC000
#define EXT2_I_FLAGS_SEC_DEL 0x01
#define EXT2_I_FLAGS_UNDELETE 0x02
#define EXT2_I_FLAGS_COMPRESS 0x04
#define EXT2_I_FLAGS_SYNC 0x08
#define EXT2_I_FLAGS_IMMUTABLE 0x10
#define EXT2_I_FLAGS_APPEND 0x20
#define EXT2_I_FLAGS_NODUMP 0x40
#define EXT2_INODE_BAD_BLOCKS 1
#define EXT2_INODE_ROOT 2
#define EXT2_INODE_ACL_INDEX 3
#define EXT2_INODE_ACL_DATA 4
#define EXT2_INODE_BOOT_LOADER 5
#define EXT2_INODE_UNDELETE_DIR 6
#define EXT2_INODE_AVAIL 11
#define EXT2_FT_UNKNOWN 0
#define EXT2_FT_FILE 1
#define EXT2_FT_DIR 2
#define EXT2_FT_CHAR 3
#define EXT2_FT_BLOCK 4
#define EXT2_FT_FIFO 5
#define EXT2_FT_SOCK 6
#define EXT2_FT_SYMLINK 7
#define EXT2_FT_MAX 8
#include "vfs.h"
typedef struct
{
u32_t s_inodes_count; /* Inodes count */
u32_t s_blocks_count; /* Blocks count */
u32_t s_r_blocks_count; /* Reserved blocks count */
u32_t s_free_blocks_count; /* Free blocks count */
u32_t s_free_inodes_count; /* Free inodes count */
u32_t s_first_data_block; /* First Data Block */
u32_t s_log_block_size; /* Block size: 0->1024, 1->2048, 2->4096 */
int s_log_frag_size; /* Fragment size */
u32_t s_blocks_per_group; /* # Blocks per group */
u32_t s_frags_per_group; /* # Fragments per group */
u32_t s_inodes_per_group; /* # Inodes per group */
u32_t s_mtime; /* Mount time */
u32_t s_wtime; /* Write time */
u16_t s_mnt_count; /* Mount count */
short s_max_mnt_count; /* Maximal mount count */
u16_t s_magic; /* Magic signature */
u16_t s_state; /* File system state */
u16_t s_errors; /* Behaviour when detecting errors */
u16_t s_minor_rev_level; /* minor revision level */
u32_t s_lastcheck; /* time of last check */
u32_t s_checkinterval; /* max. time between checks */
u32_t s_creator_os; /* OS */
u32_t s_rev_level; /* Revision level */
u16_t s_def_resuid; /* Default uid for reserved blocks */
u16_t s_def_resgid; /* Default gid for reserved blocks */
u32_t s_reserved[235];
} ext2_super_block_t;
typedef struct
{
u32_t bg_block_bitmap; // Blocks bitmap block
u32_t bg_inode_bitmap; // Inode bitmap block
u32_t bg_inode_table; // Inode table block
u16_t bg_free_blocks_count; // Free blocks count
u16_t bg_free_inodes_count; // Free Inodes count
u16_t bg_used_dirs_count; // Directories count
u16_t bg_pad1;
u32_t bg_reserved[3];
} ext2_group_desc_t;
typedef struct
{
u16_t i_mode; // File mode
u16_t i_uid; // Owner UID
u32_t i_size; // Size in bytes
u32_t i_atime; // Access time
u32_t i_ctime; // Creation time
u32_t i_mtime; // Modification time
u32_t i_dtime; // Deletion time
u16_t i_gid; // Group ID
u16_t i_links_count; // Links count
u32_t i_blocks; // Blocks count
u32_t i_flags; // File flags
u32_t i_reserved1;
u32_t i_block[15]; // Pointers to blocks (12 direct, single, double, triple indirect)
u32_t i_version; // File version (for NFS)
u32_t i_file_acl; // File ACL
u32_t i_dir_acl; // Directory ACL
u32_t i_faddr; // Fragment address
u8_t i_frag; // Fragment number
u8_t i_fsize; // Fragment size
u16_t i_pad1;
u32_t i_reserved2[2];
} ext2_inode_t;
typedef struct
{
u32_t inode; // inode number
u16_t length; // directory entry length
u8_t name_length; // name length
u8_t file_type; // File type
char name[EXT2_NAME_LEN];
} ext2_dir_entry_t;
#ifdef _HOS_CPP_
class Ext2 : public FileSystem
{
protected:
public:
};
#endif
kernel/fs/ext2_old.h
+4 -4
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@@ -75,11 +75,11 @@ typedef struct
u32_t s_blocks_per_group; /* # Blocks per group */
u32_t s_frags_per_group; /* # Fragments per group */
u32_t s_inodes_per_group; /* # Inodes per group */
u32_t s_mtime; /* Mount time */
u32_t s_wtime; /* Write time */
u32_t s_mtime; /* Mount time */
u32_t s_wtime; /* Write time */
u16_t s_mnt_count; /* Mount count */
short s_max_mnt_count; /* Maximal mount count */
u16_t s_magic; /* Magic signature */
short s_max_mnt_count; /* Maximal mount count */
u16_t s_magic; /* Magic signature */
u16_t s_state; /* File system state */
u16_t s_errors; /* Behaviour when detecting errors */
u16_t s_minor_rev_level; /* minor revision level */
kernel/fs/vfs.cpp
+37
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@@ -6,11 +6,48 @@
#define _HOS_CPP_ _HOS_CPP_
extern "C" {
#include "hos_defines.h"
#include "display/kout.h"
}
#include "vfs.h"
#include "lang/vector.h"
#include "lang/string.h"
#include "devices.h"
inode_num_t rootInode;
vector<VFSMount> *mountPoints;
int vfs_init()
{
mountPoints = new vector<VFSMount>;
return 0;
}
int vfs_mount(device_t device, int fsType, char *mountPoint)
{
string mountPt(mountPoint);
if (mountPt == "/")
{
}
return 0;
}
VFSMount::VFSMount(device_t dev, FileSystem *fs, string mountPoint, inode_num_t mountInode)
{
myDev = dev;
myFS = fs;
myRefs = 0;
myMountPoint = mountPoint;
myMountInode = mountInode;
}
VFSMount::~VFSMount()
{
if (myFS)
delete myFS;
if (myRefs)
kprintf("Filesystem uncleanly mounted from %s\n", myMountPoint.data());
}
kernel/fs/vfs.h
+60 -2
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@@ -7,20 +7,78 @@
#ifndef __HOS_VFS_H__
#define __HOS_VFS_H__ __HOS_VFS_H__
#define FS_EXT2 1
#define VFS_FT_UNKNOWN 0
#define VFS_FT_FILE 1
#define VFS_FT_DIR 2
#define VFS_FT_CHAR 3
#define VFS_FT_BLOCK 4
#define VFS_FT_FIFO 5
#define VFS_FT_SOCK 6
#define VFS_FT_SYMLINK 7
#define VFS_PERMS_OX 0x0001
#define VFS_PERMS_OW 0x0002
#define VFS_PERMS_OR 0x0004
#define VFS_PERMS_GX 0x0008
#define VFS_PERMS_GW 0x0010
#define VFS_PERMS_GR 0x0020
#define VFS_PERMS_UX 0x0040
#define VFS_PERMS_UW 0x0080
#define VFS_PERMS_UR 0x0100
#define VFS_PERMS_STICKY 0x0200
#define VFS_PERMS_SGID 0x0400
#define VFS_PERMS_SUID 0x0800
#define EOF 1000000
#include "hos_defines.h"
#include "devices.h"
#ifdef _HOS_CPP_
extern "C" {
#endif
typedef u64_t inode_num_t;
int vfs_init();
int vfs_mount(device_t device, int fsType, char *mountPoint);
#ifdef _HOS_CPP_
}
#include "lang/string.h"
class FileSystem
{
public:
FileSystem();
~FileSystem();
FileSystem(device_t dev);
virtual ~FileSystem();
virtual u32_t totalBlocks(); /* 512 byte blocks */
virtual u32_t usedBlocks();
virtual u32_t freeBlocks();
virtual u32_t totalInodes();
virtual u32_t usedInodes();
virtual u32_t freeInodes();
virtual u32_t getRootInodeNumber();
};
class VFSMount
{
protected:
device_t myDev;
FileSystem *myFS;
int myRefs;
string myMountPoint;
inode_num_t myMountInode;
VFSMount
public:
VFSMount(device_t dev, FileSystem *fs, string mountPoint, inode_num_t mountInode);
~VFSMount();
};
#endif
kernel/fs/vfs_old.h
-52
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@@ -162,57 +162,5 @@ int vfs_read_block_file(vfs_open_file_t *open_file, void *buffer);
int vfs_block_file_seek(vfs_open_file_t *open_file, u32_t block_number);
int vfs_close_block_file(vfs_open_file_t *open_file);
#ifdef _HOS_CPP_
class FileSystem
{
public:
FileSystem();
virtual void out();
};
FileSystem::FileSystem()
{
kprintf("FileSystem()\n");
}
void FileSystem::out()
{
kprintf("I am a FileSystem object.\n");
}
class Ext2 : public FileSystem
{
public:
Ext2();
void out();
};
Ext2::Ext2()
{
kprintf("Ext2()\n");
}
void Ext2::out()
{
kprintf("I am an Ext2 object.\n");
}
class JoshsFS : public FileSystem
{
public:
JoshsFS();
void out();
};
JoshsFS::JoshsFS()
{
kprintf("JoshsFS()\n");
}
void JoshsFS::out()
{
kprintf("I am an JoshsFS object.\n");
}
#endif
#endif